JPH07102907B2 - Vertically stacked sheet feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a feeder unit for feeding a sheet-shaped body to a predetermined processing device one by one, and a sheet feeding unit facing the feeder unit. While accumulating in the vertical direction,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet vertical stacking and feeding apparatus having an autoloader for supplementary feeding.

(Prior Art) When replenishing sheets while stacking them vertically in the sheet feeding section, as shown in FIG.
The sheet a such as a signature (the trailing edge of the preceding sheet is shifted and overlapped on the trailing edge of the succeeding sheet) is conveyed by the conveying belt 1 of FIG.
By introducing between the belt 1 which is in contact with the belt 1 and the belt 2 which is in contact with the belt 1, the direction is changed to the vertical direction,
The sheet a sandwiched by the belt 1 and the belt 2 is accumulated in the longitudinal direction in sequence at the rearmost portion of the sheet a while the front end of the sheet is abutted on the feeding chain (or belt) 3 in the lower supply section B. To do. 4 is a front contact plate that supports the front end of the vertically stacked sheets, 6 is a fixed guide plate that is provided in parallel to the belt 1, and 6a is a sheet quantitative stacking state detection lever that presses and contacts the rear sheet. The sheet a1 at the forefront of the formed sheet a is clamped one by one by a predetermined feeder 5 of the vacuum suction method or the jaw clamping method in the feeder section C, and is supplied and conveyed to the next step. .

In such a conventional vertical sheet stacking and feeding apparatus, when the trailing edge of the preceding sheet of the sheet a being fed by the loader section A is fed so as to be overlapped with the upper side of the leading edge of the trailing sheet, it is convenient. , The upper rear edge of the rearmost sheet a2 that is vertically stacked
a2-1 and the front end portion a3 of the next sheet a3 that is sequentially conveyed
-1 does not collide and seat a3 along the back of seat a2
Slips while being sandwiched between belt 1 and belt 2,
The sheets a2 and a3 are sequentially and smoothly stacked.

However, as shown in FIG. 5, when a gap is generated between the preceding sheet and the succeeding sheet on the belt 1 sequentially conveyed by the loader section A (or, in this way, the sheet a
When the sheets are conveyed at an appropriate distance from each other), the preceding sheet a, which is sandwiched between the belt 1 and the belt 2 and conveyed in the vertical direction, is the rearmost sheet a2 of the vertical stacking sheets of the feeding section B. For example, the front end a3-1 of the trailing sheet a3 to be accumulated behind the sheet a2 is the upper end of the preceding sheet a2.
a2-1 It is easy to collide with the upper side and cause breakage or misalignment of the stacking sheet, or failure of the machine body.

(Object of the Invention) It is an object of the present invention to eliminate the above-mentioned inconvenience and to enable a succeeding sheet to be smoothly stacked vertically on a back portion of a preceding sheet.

(Structure of the Invention) The present invention relates to a loader unit that sequentially replenishes sheets in parallel to the conveyance direction, and a plurality of sheets that face the feeder unit and that are conveyed from the loader unit sequentially in the vertical direction from the rear. A sheet supply unit for stacking sheets, and a spiral rotating body that engages with a rear sheet side edge portion of the sheets stacked in the supply unit and pushes the sheet toward the feeder unit side facing forward. The rotating body starts and stops in conjunction with the loader section, rotates at a peripheral speed corresponding to the sheet conveying speed in the loader section, and further rotates the rotating body and the rotating body. The drive unit for driving and rotating is connected via a torque releaser.

(Advantageous Effects of the Invention) According to the present invention, when the sheets are continuously stacked in the vertical direction in the sheet supply unit, the preceding sheets and the succeeding sheets can be stacked smoothly and in order without collision. It is a thing.

(Example) The present invention will be described in detail according to an example.

FIG. 1 is a side view of a main part of an embodiment of the device of the present invention, which shows an endless conveyor belt 1 for conveying a sheet a in a direction parallel to the conveying direction in the direction of the arrow, and a conveyor belt 1 for conveying the same. A loader unit A having guide rollers 1a, 1b, 1c for guiding and a driving roller (not shown) is provided. The guide roller 1a is a conversion roller for converting the traveling direction of the conveyor belt 1 from the horizontal direction to the vertical direction, and has a diameter larger than the roller diameter of the guide rollers 1b, 1c and the like. The direction changing mechanism is not limited to the guide roller 1a, and a changing mechanism can be appropriately used.

A part of the endless belt 2 is turned from the horizontal direction to the vertical direction with respect to the part of the belt 1 that is in contact with the direction changing roller 1a, and the end face of the belt 2 is guided by the guide rollers 2a, 2b, 2c, respectively. It is installed so that it can be sent endlessly in the direction of the arrow. Conversion guide roller 1a and guide roller 1b
The linear traveling surface of the belt 1 between the guide roller 1a and
It is extended from the linear feeding surface of the belt 2 between the guide roller 2c and the guide roller 2c, and the extended feeding surface serves to accumulate the sheet a on the sheet feeding section B side. Sheet supply unit B
Is provided with an endless feeding belt or chain 3 in a direction orthogonal to the downward belt 1 connecting the guide rollers 1a and 1b and below the guide roller 1b. The belt 3 is wound around the kite rollers 3a and 3b and can be driven to move. Guide rollers 1a to 1b
The front abutting section 4 is provided in parallel with the belt 1 which is fed downward toward the front side, at a predetermined distance (a distance set according to the number of sheets to be vertically stacked). The front part 4 is for preventing the stacked sheets from falling forward.

The transport belt 3 is for contacting the lower end of the vertically stacked sheets a and advancing the stacked sheets a in the front contact portion 4 direction. The lower part of the front part 4 and the transport belt 3
A space 4a is provided between the sheet a and the sheet a through the space 4a.
The lower end is clamped one by one by the feeder 5 (air suction method or jaw method) of the feeder unit C, and is supplied and conveyed to a sheet processing device (for example, a bookbinding machine, a sheet punching cutting machine, etc.) in the subsequent stage. It

The apparatus of the present invention includes a pair of left and right side edge edges of the sheet a which are engaged with the both side edge edges of the rear sheet of the sheet a vertically stacked in the feeding section B in FIG. The pair of spiral rotating bodies 7 is provided. The rotating body 7 has its rotation center axis direction aligned approximately in the feeding direction of the vertically-stacked sheet a, 8 is a rotating shaft for rotating the rotating body 7, and 9 is a main body for supporting the shaft 8 about its axis. A bracket fixed to the frame, 10 is a drive shaft on the drive side for rotating the shaft 8, and 11 is a bracket for supporting the drive shaft 10 about its axis. 6 is a vertical belt 1
A guide plate 6a for supporting the rear portion of the vertical stacking sheet provided in parallel with the reference numeral 6a is a detection lever for contacting the rear portion of the stacking sheet a to detect the accumulated fixed amount. When the amount of sheets exceeds a certain amount by the lever 6a, the rotation of the rotating body 7 and the traveling of the conveyor belt 1 are stopped. Further, as shown in FIG. 1, the device of the present invention includes a driven shaft 8 for rotating a spiral rotor 7, a drive shaft 10, a torque releaser 12 (Torque Limiter Coupling Co., Ltd., Tsubakimoto Morse, etc.). ) Via. The torque releaser 12
Includes slides 12a and 12b, and one slide plate 12a is
The other slide plate integrally joined to the driven shaft 8
12b is integrally joined to the drive shaft 10. The shafts 8 and 10 are connected by the slide plates 12a and 12b. Then, when the slide plates 12a and 12b are subjected to a stress requiring a torque of a predetermined value or more on the driven shaft 8 side, the slide plates 12a and 12b are relatively slid from each other and disengaged from each other. The motor stops and the drive shaft 10 stops. This keeps the pushing pressure of the sheet a constant. And
Simultaneously with the stop of the drive shaft 10, the traveling drive of the belt 1 of the loader section A is also stopped. Then, after the required torque of the driven shaft 8 for the vertically stacked sheets a in the feeding section B is reduced by the feeding operation of the sheet a by the feeder 5, the drive motor is started again by the manual switch operation to drive the driving side. By rotating the shaft 10, the slide plates 12a and 12b rotate without slipping, the driven side shaft 8 and the spiral rotating body rotate, and the sheet a sent from the loader section A side to the supply section is transferred to the front abutting section 4. It is to be pushed in the direction. In addition to the manual rotation of the drive motor as described above, a sheet a passage number detector for confirming the delivery operation of the sheet a from the supply section B to the feeder 5 is provided, and the fed sheet is fed. The switch of the drive motor may be turned ON after an sheet has been printed, and the drive shaft 10 may be automatically operated.

FIG. 2 is a plan view for explaining the engagement state between the spiral rotating body 7 shown in FIG. 1 and the left and right edges of the sheet a. The pair of rotating bodies 7 on both sides have a spiral formed in a spiral traveling direction opposite to each other at a pitch of 5 to 15 mm, for example. The sheet a is fed in the front contact portion 4 direction by rotating the rotating bodies 7 on both sides in the direction of the arrow shown in the drawing. L is a width required for a predetermined quantitative accumulation of the vertical direction accumulation sheet a. For example, as the number of sheets a accumulated in the fixed width increases, compressive stress of a predetermined amount or more is applied to the sheet a by the spiral portion on the tip side of the spiral rotor 7, and the driven member for rotating the rotor 7 is driven. The torque of the rotating shaft 8 on the side increases, and the slide plates 12a and 12b of the torque releaser 12 slide with each other to operate a switch provided in the releaser, and a signal from the switch operates to drive the drive source of the drive shaft 10 (servo). Motor, brake motor, etc.).

In the above apparatus, as shown in FIG. 1, the torque releaser 12 is also used as a sheet amount detection lever 6a for spring-pressing the lower side of the rearmost portion of the vertically stacked sheet a with a predetermined pressure.
The fulcrum 6c of the other end 6b is caused by the stress against the spring of the lever 6a.
May be rotated to bring the arm 6d into contact with the limit switch 6e to stop the rotation of the rotating body 7 and stop the transportation of the loader unit A.

As another embodiment of the device of the present invention, the rotating body 7
The driven shaft 8 is provided with a cam or notch 8a, and the notch 8a is provided with a microswitch 8b for contacting each rotation of the shaft to confirm that the shaft 8 is rotating. The torque releaser 12 is provided with a driven shaft. By providing slide plates 12a, 12b that slip when 8 becomes a predetermined torque or more, and by checking whether or not the driven shaft 8 is rotating,
The conveyance belt 1 is fed or stopped, and the supply of the sheet a to the supply unit B is stopped.

(Effects of the Invention) According to the present invention, when a sheet is conveyed from the loader unit and continuously accumulated in the predetermined supply unit in the vertical direction, the trailing sheet is placed behind the sheet after the preceding accumulation. The sheets can be smoothly stacked one after another, and the stacked sheets accumulated in the supply unit can be constantly held in the supply unit at a stable pressure, and the feeder unit can smoothly convey and supply the post-cutting processing device. It is a thing.

[Brief description of drawings]

FIG. 1 is a side view of a main part of the device of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a schematic side view of a signature feeding device of a bookbinding machine to which the device of the present invention is attached. 4 and 5 are side views of a conventional sheet vertical stacking device. 1 ... Conveyor belt, 2 ... Clamping belt, 3 ... Integrated feeding belt, 4 ... Front part, 5 ... Feeder, 6 ... Guide plate, 7 ... Spiral rotor, 8 ... Rotating shaft , 9 ...
… Bracket, 10 …… Drive shaft, 11 …… Bracket, 12 …… Torque releaser, 13 …… Stocker feeding belt, 14 …… Vacuum drum, 15 …… Belt, 16 ……
Pulley, 17 ... Rail A ... Loader, A1 ... Stocker part, A2 ... Vertical loading part, A3 ... Horizontal loading part, B ... Feeding part, C ... Feeder part, D ... Bookbinding collation transfer part

Claims (1)

[Claims] 1. A loader unit for sequentially replenishing sheets in parallel to the conveying direction and a plurality of sheets, which are opposed to a feeder unit of the sheets and are conveyed by the loader unit, sequentially from the rear in the longitudinal direction. A sheet feeding portion for, and a spiral rotating body that engages with a rear sheet side edge portion of the sheet accumulated in the feeding portion and pushes the sheet toward the feeder portion side facing the front, The rotating body starts and stops in conjunction with the loader section, rotates at a peripheral speed corresponding to the sheet conveying speed in the loader section, and further rotates the rotating body and the rotating body. A vertically-integrated sheet feeding device, characterized in that it is connected to a drive unit via a torque releaser.