JP2860541B2 - Paper feeder for box making machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder for supplying box materials one by one in a box making machine mainly for producing paper boxes.

[0002]

FIG. 4 shows a conventional paper feeding apparatus of this type. That is, the paper feeder 1 is provided with a rear support 4 at the rear and a gate 5 at the front on a belt conveyor 3 using an elastic belt 2 made of rubber or the like. The rear support 4 supports the rear end of the stacked box materials 6 and holds the front end of the box material 6 obliquely by contacting the front end with the belt 2. The gate 5 extends substantially vertically, abuts the front end of the laminated box material 6, and has a gap 7 in the lower part.

[0003] The gap 7 is set to have a size that allows one box material 6 to pass through, and the belt conveyor 3 is used by continuously operating from the rear to the front. In this case, the lowermost box material 6 passes under the gate 5, and when this has passed, the front end of the next lowermost box material 6 falls and comes into contact with the belt 2 and starts to advance. Drops from the rear support 4 as it progresses, rests on the belt 2 and passes under the gate 5. Thus, the box material 6 is supplied one by one.

[0005] As shown in FIGS.
Is used for a box material 6 'having a long shape in the front-rear direction, accurate feeding cannot be performed. That is, box material 6 '
Since the front and rear ends can be supported, it is bent when it is long, and deforms such that the central portion is depressed. Due to this deformation, the rear part of the front end comes into contact with the belt 2, and the rear part is further pushed down by the weight of the other box material 6 'which is superimposed thereon. As a result, the front end of the lowermost box material 6' It floats from the surface of the belt 2. In this case, if the gap 7 of the gate 5 is set to a normal size as shown in FIG. If the gap 7 is larger than the box material 6 ', of course, depending on the situation,
The two box materials 6 ′ are supplied in an overlapping manner, the two are clogged in the gap 7, or even if one is successfully supplied, the front end is caught by the gate and damaged.

[0005] A similar disadvantage is that when the box material is made of flexible paper, when the paper fibers are horizontal, or when the box is provided with a window, it is easily deformed. And so on.

Conventionally, as a countermeasure against this, the position of the rear support 4 is increased, or the number of box materials to be laminated is reduced. However, no satisfactory results have yet been obtained.

Accordingly, the present invention has been made for the purpose of enabling accurate feeding when such a box material is bent and deformed due to a long shape or the like.

That is, according to the present invention, an auxiliary gate is provided at the rear of the gate so as to be inclined so that the lower part is located forward. This auxiliary gate is detachable and position-adjustable with respect to the gate.

When the box material stacked obliquely is pressed forward by its own weight, this auxiliary gate converts this force downward, and applies a downward force to the front end of the box material, whereby the front end of the box material is pressed. Prevent surfacing.

Further, according to the present invention, the front end of the auxiliary gate makes one box material immediately above the box material passing through the gate abut on the gate, and makes the box material above the box material abut on the auxiliary gate. In addition, the present invention includes a sheet feeding device whose position is adjusted such that the horizontal distance between the box material contacting the gate and the box material immediately above the gate material is greater than the horizontal distance between the box materials contacting the auxiliary gate.

When the auxiliary gate is set in this manner, the box material that comes into contact with the gate, that is, the box material that first moves from the stacked state, is displaced from the box material overlapping thereover. For this reason, the unevenness | corrugation, such as a fold line formed in the box raw material, will be in the state which does not mutually mesh. Therefore, when the box material starts to move, these irregularities are caught,
There is no malfunction such as stuck.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to FIGS.

In this paper feeder 10, a rear support 13 is provided at a rear portion on a belt conveyor 12 using a belt 11 made of an elastic material such as rubber, and a gate 14 is provided at a front portion.
The rear support 13 supports the rear end of the laminated box material 15,
The front end contacts the belt 11 and is held obliquely. The gate 14 extends substantially vertically, and has a gap 16 at the bottom.

An auxiliary gate 17 is provided behind the gate 14.
Are attached via a coupling member 18 so as to extend obliquely. That is, the long hole 19 formed in the gate 14
A bolt 20 is inserted and screwed into the front portion of the connecting member 18 and the front end of the connecting member 18.
2 is screwed through. For this reason, the auxiliary gate 17 can be attached to and detached from the gate 14, and the position can be adjusted.

The box material 15 is laminated, and the front end is
Alternatively, the lower end is brought into contact with the auxiliary gate 17, the lower part at the front end is brought into contact with the belt 11, and the rear end is supported by the rear support 13 and held at an angle.

The gate 14 is adjusted in height and its gap 16
Is set to a size that allows just one box material 15 to pass through.

The front end of the auxiliary gate 17 is set as shown in FIG. That is, of the box material 15, the gate 1
The box material 16b immediately above the box material 15a passing through 4 is brought into contact with the gate, and the box materials 16c, 16d,... Above the box material 16b are brought into contact with the auxiliary gate. Further, depending on the thickness of the front end of the auxiliary gate 17, the horizontal interval 1 between the box material 16b that comes into contact with the gate and the box material 16c immediately above the gate material becomes the box materials 16c, 16 that come into contact with the auxiliary gate.
The position is adjusted so as to be larger than the horizontal interval m of d,.

The paper feeder 10 has the above configuration.
It works as follows. As in the case of the conventional paper feeding device 1, the gap 16 is set to a size that allows one box material 15 to pass through,
The belt conveyor 12 is used by continuously operating it from the rear to the front. As a result, the lowermost box material 15a passes through the lower portion of the gate 14, and when this has been passed, the front end of the next lowermost box material 15b falls and comes into contact with the belt 11 and starts to advance. Drops from the rear support 13 as it progresses, rests on the belt 11, and passes under the gate 15. Thus, the box material 15 is supplied one by one.

In the paper feeder 10, the front end of the stacked box material 15 is inclined by the auxiliary gate 17 so that the lower end thereof is located forward. In addition, box material 1
Since the rear of the whole 5 has a high inclination, the box material 15 is pushed forward by its weight. Therefore,
This pushing force is converted downward by the auxiliary gate 17, and the front end of each box material 15 is pushed down. As a result, the front end of the box material 15 is reliably brought into contact with the belt 11 without floating, and is supplied through the gap 16 of the gate 14 one by one.

Further, when the position of the auxiliary gate 17 is adjusted as described above, the supply reliability is further improved.
The box material 15 is usually provided with unevenness such as a crease or a perforation for cutting out. When the layers are stacked, the irregularities mesh with each other, and it is difficult to slide only one sheet. When the position is adjusted, as shown in FIG. 3, the unevenness 23 such as a crease is in a state in which the position of the box material 15b that comes into contact with the gate, that is, the box material that first moves from the stacked state, is greatly shifted. For this reason, this box material 1
5b starts moving smoothly without being caught.

In this paper feeder 10, since the auxiliary gate 17 is detachable, the auxiliary gate 17 is removed when the box material does not bend and deform.
It can be used as a conventional configuration. When the box material is hard to bend, the conventional configuration is easier to handle.

[0022]

As described above, the paper feeding device of the box making machine according to the present invention has the auxiliary gate and can prevent the front end of the box material from floating, so that the box is deformed by a long shape or the like. The material can be fed accurately and reliably.

Further, by using the auxiliary gate, by adjusting the position of the auxiliary gate, the box material to be moved next is held at a position deviated from the others, thereby preventing malfunction due to engagement of unevenness such as a folding line. , And more reliable paper feeding becomes possible.

[Brief description of the drawings]

FIG. 1 is a side view of one embodiment of the present invention.

FIG. 2 is an enlarged side view of a front end of an auxiliary gate of the same example.

FIG. 3 is an enlarged side sectional view showing an uneven portion of the box material of the same example.

FIG. 4 is a side view of a conventional sheet feeding device.

FIG. 5 is a side view of a state in which a conventional paper feeding device is used for a long box material.

FIG. 6 is an enlarged side view of a gap portion of the gate in the same state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Paper feeder, 11 ... Belt, 12 ... Belt conveyor, 13 ... Rear support, 14 ... Gate, 15 ... Box material,
16: gap, 17: auxiliary gate, 18: coupling member, 19
... Long hole, 20 ... Bolt, 21 ... Long hole, 22 ... Bolt, 2
3: Unevenness.

Claims (2)

(57) [Claims] 1. A belt conveyor using an elastic belt made of rubber or the like, provided on a rear portion of the belt conveyor,
A rear support that supports the rear end of the stacked box material and holds the front end of the stacked box material obliquely by contacting the front end with the belt, and provided on the front portion of the belt conveyor so as to extend substantially vertically, and adjusts the front end of the stacked box material. A box feeder comprising: a gate that abuts and passes a box material one by one through a gap provided at a lower portion. The feeder is attached to the rear of the gate in a detachable and position-adjustable manner, and extends obliquely. A sheet feeding device for a box making machine, comprising: an auxiliary gate for inclining a front end of a stacked box material so as to be located forward toward a lower portion, and applying a downward force to the front end of the stacked box material. 2. The method according to claim 1, wherein the front end of the auxiliary gate is located immediately above a box material passing through the gate.
The box material above the box material is brought into contact with the gate, the box material above the box material is brought into contact with the auxiliary gate, and the horizontal distance between the box material that comes into contact with the gate and the box material immediately above the gate material is the auxiliary gate. Is adjusted so that it is larger than the horizontal distance between each box material that abuts on the box material. Characteristic paper feeder for box making machines.