JP2706878B2 - Paper ejection device of flat plate punching 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 sheet discharging device for a flat plate punching machine, and more particularly, to a sheet discharging device for cutting one or more cut lines having a predetermined shape so that the cut portion can be removed later. The present invention relates to an apparatus for orderly stacking a plurality of flat papers on a processed flat paper already loaded on a paper discharge section when a plurality of flat papers are simultaneously pulled and transferred to a paper discharge section.

[0002]

2. Description of the Related Art Conventionally, there has been a machine called a flat plate punching machine, which is formed on a relatively large sheet of paper (hereinafter referred to as flat paper) 1 as shown in FIG. The cut line 3 of the developed shape 2 is formed by punching leaving a partial connection point. The flat paper 1 shown in FIG.
The cut lines 3 of the two envelope development shapes 2 are formed at the same time.

As described above, a conventional flat board punching machine includes a punching process section for forming a cut line 3 having a predetermined developed shape 2 on flat paper, and a flat paper sheet having a cut line 3 formed thereon (hereinafter referred to as a processed flat board). And a paper discharge unit for stacking and storing a predetermined number of papers from the punching process unit, and transporting the processed flat paper during this period by driving a bar with a gripper. I was

That is, the conventional flat-sheet punching machine includes drive chains 4 arranged as shown in FIG. 5 on both sides of a transfer path of a processed flat-sheet paper from a punching process section to a discharge section, respectively. Bars 5 are fixed to both ends of the drive chain 4 at predetermined intervals (intervals equal to or longer than the length of the flat paper in the movement direction) so as to bridge the drive chains 4 on both sides thereof.

A plurality of gripping claws 6 are mounted on the surface of the bar 5 as shown in FIG. The gripping claw 6 is a trapezoidal plate member made of a spring material, and has a short side end 6a protruding from an edge of the bar 5 and is located on an integrally formed tongue-like portion 5a. The long side end 6b is
Are fixed by bolts 7 or the like.

As shown in FIG. 5, the flat paper 1 is gripped with its front end in the direction of movement sandwiched between the clamping tongue 5a of the bar 5 and the end 6a of the gripping claw 6. , And the bar 5 is pulled and transferred. In such a conventional flat-sheet punching machine, as shown in FIG.
And a stock table 9 which can be moved up and down in the area. The stock table 9 which can be moved in the vertical direction is arranged in this area. 9 is provided with a grip release device 10 that releases the grip by lifting the end 6a of the gripping claw 6 attached to the bar 5 with respect to the tongue 5a.

The grip release device 10 is provided in front of the paper discharge unit 8 and has a stationary cam lever 11 arranged at a position corresponding to the gripper 6 to be passed. On the other hand, a bar 6b serving as a follower is fixed to the end 6a of the gripping claw 6 attached to the bar 5, as shown in FIG. The hole extends downward through a hole 5b formed in the hole.

[0008] The front side of the paper discharge section 8 where the stationary cam lever 11 of the grip release device 10 is installed corresponds to the direction change position of the bar 5 moved by the chain 4, so that when the bar 5 is inclined, a bar member is provided. 6b is a stationary cam lever 11
, And is pushed up by this.
a is lifted up and opens between the bar 5 and the clamping tongue 5a. Therefore, the processed flat paper sandwiched between the end portion 6a and the tongue-shaped portion 5a is released from being gripped, and is separated from the bar 5 to form a stock table in the processed flat paper storage area, which is the discharge portion 8, which is a discharge portion. 9 will fall.

The stock table 9 is gradually lowered with an increase in the amount of the processed flat paper 1 which is sequentially stacked, so that the position of the uppermost processed flat paper in the height direction is always substantially constant. I have. When a predetermined number of processed flat papers are stacked on the stock table 9, the table 9 is taken out from the paper discharge unit 8 and sent to the next process.

[0010]

Since the conventional flat punching machine is constructed as described above, the bar 5 pulls out the processed flat paper 1 on which the cut line 3 of the predetermined shape 2 is formed. From the transfer to the paper section 8, until the transferred processed flat paper 1 is positioned immediately above the processed flat paper on the stock table 9, approximately half of the middle of the transferred processed flat paper to the rear end. Moves so as to rub on the processed flat paper on the stock table 9.

Normally, when a cut line 3 having a predetermined shape 2 is punched into flat paper as shown in FIG. 4, even if the cut line 3 is connected by partial continuous contacts, a predetermined shape is formed at the cut line forming portion. Since the portion 2 is cut off, the predetermined shape portion is partially disengaged from the flat paper and sags to the lower surface side, or a part of the processed flat paper on the stock table rises due to humidity and temperature. .

When the processed flat papers in such a state relatively move while overlapping with each other, the shape portions which have been sagged or lifted are caught and the predetermined shaped portions of the processed flat paper are damaged, or the stock table is damaged. There was a problem that it could not be loaded on top. For this reason, the conventional flat-sheet punching machine has an air blowing device at the paper discharge section to float the transferred processed flat paper with air to prevent scraping of the processed flat paper already on the stock table. Preventing.

However, the number of processed flat papers that can be lifted by air is one or at most a few, and several tens of flat papers are attached to the gripping claws of the bar in order to increase production efficiency. At the same time, and in the punching process section, simultaneously forming a cut line of a predetermined shape on this dozens of flat paper and trying to transfer it to the paper discharge section, the lifting due to the air is completely This does not occur, and there is a problem that the processed flat paper already rubbed on the stock table may be rubbed, resulting in a breakage or a stacking failure due to a predetermined shape portion being caught, thereby hindering an improvement in productivity.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional flat-sheet punching machine, in which a bar gripper grips several tens of sheets of flat-paper at a time and punches out. Prevents the scraping of processed flat paper that has already been stocked in the paper discharge section when the sheet is transferred to the paper discharge section after forming the cut line of the predetermined shape at the same time. It is an object of the present invention to provide a sheet discharge device for a flat plate punching machine which prevents the occurrence of a problem and improves productivity.

[0015]

According to the present invention, there is provided a sheet discharging apparatus for a flat board punching machine, comprising a means for gripping a plurality of flat paper ends, and a punching section for forming a cut line of a predetermined shape on the flat paper. Extending in the direction of movement of the bar for pulling and transporting the flat paper toward the paper discharge section for temporarily storing the flat paper with the perforated line, and arranged on both sides of the paper discharge section. A guide rail, a slider movably attached to the guide rail, and a retractable rear end (end of a flat paper entering side) of the paper discharge section. A flat paper support screen fixed to the
Means for constantly applying a return force to the flat paper support screen in the storage direction, and gripping of the bar by the flat paper gripping means when the flat paper comes to the discharge section by the bar. Gripping release means for releasing, wherein each of the sliders has a contact portion that comes into contact with the bar when the bar enters the paper discharge section, and the slider that contacts the bar is moved by the bar by a predetermined distance. The guide rail is arranged to be inclined so as to be moved to draw out the flat paper support screen from the storage part, to support the flat paper being transported from below, and to release the abutment thereof. And

[0016]

According to the sheet discharging device of the flat sheet punching machine of the present invention, when a plurality of flat sheets having a cut line formed in a predetermined shape by punching are pulled by a bar and transferred to the sheet discharging section,
When the bar enters the paper discharge section, the bar comes into contact with the slider and moves the slider. The flat paper support screen is pulled out of the storage unit by the movement of the slider, and supports the flat paper entering the discharge unit with the movement of the bar from below.

Immediately before the bar approaches the position where it exceeds the paper discharge portion, the grip release device operates to release the grip of the flat paper by the bar. The flat paper support screen pulled out of the storage unit by the slider is returned to the storage unit by the return force applying means. For this reason, the flat paper that has been moved to almost immediately above the paper discharge section on the flat paper support screen loses support and starts to fall down as it is, and at the same time the gripping by the bar is released. Are stacked on the flat paper already stocked in such a manner that the paper is dropped from directly above in a substantially horizontal state. Therefore, mutual rubbing does not occur, and a stacking defect does not occur.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a flat sheet punching machine according to the present invention. 1 and 2 show a sheet discharging device 20 of a flat plate punching machine according to one embodiment of the present invention. The paper discharge device 20 is a flat paper 1
The paper discharge unit 21 is provided at the final position of the transfer path, and basically refers to a processed flat paper storage area secured between the chains 4 that drive the bars 5.

A stock table 9 that can move in the vertical direction is arranged in the paper discharge unit 21, that is, in the processed flat paper storage area, similarly to the paper discharge device of the conventional flat punching machine. As shown in FIG. 2, the stock table 9 is connected and supported by a chain 23 hung on sprockets 22a and 22b disposed on both sides thereof, and one of these sprockets is a motor (not shown). Driven by This motor is controlled by a means for detecting the amount of processed flat paper loaded on the stock table 9 and a control device (neither is shown) for stopping the driving of the motor by a signal from the means. Is controlled so that the uppermost part of the processed flat paper loaded on the paper is always at a fixed position.

Guide rails 24 are provided on both sides of the paper discharge section 21 and slightly below the flat paper transport path.
Sliders 25 are attached to the guide rails 24, respectively, and are guided by the guide rails 24 to reciprocate freely. On the upper surface of the slider 25, a projection 25a is formed which comes into contact with the front end of the bar 5 which moves on the flat paper transport path. Further, both of the sliders 25 are provided with the paper discharge unit 2.
The front end of the support screen 26, which is retractably stored at the rear end (end of the side of the processed flat paper entering side) in FIG.

The storage section of the support screen 26 has a guide rod 27 attached to extend vertically as shown in FIG. 2 and a weight 28 slidably mounted on the rod. The rear end of 27 is connected to this weight 28. At the rear end of the guide rail 24 on which the slider 25 moves and the lower end of the guide rod 27 in the storage section, the slider 25 and the weight 28 collide with the rail and rod mounting brackets when the slider 25 returns and the weight descends, respectively. Coil springs 29 and 30 for buffering are provided so as not to be disturbed.

The guide rail 24 for guiding the movement of the slider 25 is inclined so as to gradually descend in the direction of movement of the flat paper. Therefore, the slider 25
Abuts against the bar 5 and is pushed by the bar 5 to lower its position as it advances on both sides of the processed flat paper storage area in the processing flat paper moving direction.
The contact between a and the bar 5 is released. The inclination angle of the guide rail 24 is set such that the guide rail 24 is separated from the bar 5 when the slider 25 approaches the center of the processed flat paper storage area.

At the front end of the paper discharge section 21, a grip release device 10 for releasing the grip of the flat paper 1 by the grip claws 6 attached to the bar 5 is provided. Is a device conventionally provided in a flat plate punching machine, and its configuration is as described above.

Next, the operation of the flat sheet punching machine according to this embodiment in the sheet discharging device will be described. A large number of flat papers gripped by the bar 5 at once by using the gripping claws 6 of the bar 5 are cut into the predetermined shape by the cutting line 3 in the punching process section.
Is pulled and transported to the paper discharge unit 21. When the bar 5 gripping a large number of processed flat papers 1 enters the paper discharge unit 21, the bar 5 contacts the protrusion 25a of the slider 25 and moves forward while pushing it.

By the movement of the slider 25, the support screen 26 is pulled out of the storage section, and supports the processed flat paper entering the paper discharge section 21 while being pulled by the bar 5 from below. As a result, the processed flat paper moves on the paper discharge unit 21 on the support screen 26, and the processed flat paper is prevented from rubbing with the processed flat paper on the stock table 9 due to the sagging of the transferred processed flat paper.

When the bar 5 passes through the substantially central portion of the paper discharge section 21, the contact between the projection 25a of the slider 25 and the bar 5 is released, whereby the support screen 26 is connected to the weight connected to its rear end. 28 allows for rapid retraction to storage. However, while the support screen 26 is being pulled back, the bar 5 is moving forward and the support screen 2
The gripper 6 of the bar 5 grips the processed flat paper 1 by the grip release device 10 while the front end of the flat paper 6, that is, the end on the side of connection with the slider 25, is returning near the rear end of the processed flat paper 1. In order to release, the processed flat paper 1 is dropped and loaded on the already processed flat paper on the stock table 9 in a substantially horizontal state.

In the above-described embodiment, the storage portion of the support screen 26 is formed in the height direction space so that the rear end is pulled vertically downward by the weight 28. However, the present invention is not limited to this. It is not limited, and may be, for example, a winding type in which a support screen is wound around a rotating shaft to which a rotational urging force is applied in a winding direction.

[0028]

As described above, according to the paper ejection device of the flat punching machine of the present invention, a large number of processed flat papers are grasped at once by the bar and pulled to the paper ejection portion of the paper ejection device. At the time of transport, the processed flat paper is sent from the storage section as it is supported from below by the support screen that comes out of the storage section along with the movement of the bar in the paper discharge section, and the support screen returns to the appropriate place and the processed flat paper is moved to the bar. The processed flat paper falls down and is loaded almost horizontally on the already loaded processed flat paper of the stock table in the discharge section, and the processed flat paper is transferred to the stock table. It is possible to process a large amount of flat paper at a time without rubbing the flat processing paper and damaging the punched shape portion or causing a stacking failure, thus improving productivity. .

[Brief description of the drawings]

FIG. 1 is a plan view showing a paper discharge unit of a flat paper punching machine according to one embodiment of the present invention.

FIG. 2 is a side view showing a sheet discharging device of the flat board punching machine shown in FIG.

FIG. 3 is an operation explanatory diagram showing a state at the moment when the contact between the slider and the bar that pulls out the support screen from the storage unit and the bar is released in the paper ejection device of the flat paper punching machine of the present invention shown in FIGS. 1 and 2; is there.

FIG. 4 is a plan view showing a processed flat paper in which a cut line is formed in a predetermined shape by a flat paper punching machine.

FIG. 5 is a plan view showing a paper ejection device of a conventional flat paper punching machine.

FIG. 6 is a plan view showing a bar for transferring flat paper provided in the flat paper cutting machine.

FIG. 7 is an explanatory diagram showing a configuration of a grip release device provided in a paper ejection device of the flat paper punching machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flat paper 2 Predetermined shape part 3 Cut line 4 Drive chain 5 Bar 6 Grasping claw 9 Stock table 10 Grasping release device 20 Flat paper punching machine discharge device 21 Paper discharge unit 24 Guide rail 25 Slider 25a Contact Projections for support screen

Claims (1)

(57) [Claims] The present invention further comprises means for gripping a plurality of ends of a flat paper, and temporarily stocks the flat paper with the cut lines from a punching section for cutting the flat paper into a predetermined cut line. A guide rail extending in the direction of movement of the bar for pulling and transporting the flat paper toward the discharge section to be stored, and a guide rail disposed on both sides of the discharge section; a slider movably attached to the guide rail; A flat plate support screen fixed to the slider at both sides of a front end portion, which is retractably stored at a front end (an end portion on the side of the flat paper to be transported) of the discharge portion, and which is always in contact with the flat plate support screen. Means for applying a return force in the storage direction, and grip release means for releasing the bar from gripping the flat paper gripping means when the flat paper comes to the paper discharge unit by the bar. , Wherein each of the sliders is adapted to discharge the bar. A contact portion that comes into contact with the bar when the portion enters, and the slider that has contacted the bar is moved by the bar by a predetermined distance to pull out the flat plate support screen from the storage portion, and the flat plate is being transferred. A sheet discharging device for a flat plate punching machine, wherein the guide rails are inclined so as to release the contact after supporting the board from below.