JP2002154657A - Paperboard feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paperboard feeder having no possibility of causing a conveyance trouble without requiring manual labor at a start and preventing such damage that the front end edge of cardboard is collapsed or a cover sheet is turned up. SOLUTION: This paperboard feeder comprises a carrying-in conveyor 2 moving the paperboard 10 on conveyance belts 3a-3d in an overlapped state and a carrying-out conveyor 11 provided astride with a gate plate 15 to face the conveyor 2 on conveyance belts 13a-13d. The paperboard 10 dropped from the front edge section of the carrying-in conveyor by movement is received and flows out from a gap g between the gate plate and the conveyance belts, thereby the paperboard is further moved in an overlapped state. A flap 31 capable of temporarily supporting the front end edge of the paperboard dropped from the front edge section of the carrying-in conveyor in a forward inclined state during the drop is erectably provided at the lower edge section of the gate plate. A sub-roller 40 protruded on the conveyance belts is provided at the base end section of the carrying-out conveyor, the paperboard dropped from the front edge section of the carrying-in conveyor is received on the sub-roller, and the sub-roller is rotated at a peripheral speed lower than the speed of the conveyance belts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paperboard feeding apparatus for automatically feeding cardboard such as corrugated paper and cardboard to a box making machine, a printing machine and the like.

[0002]

2. Description of the Related Art An apparatus for stacking and feeding paperboard, such as corrugated paperboard or the like cut and cut into a predetermined size, onto a hopper for the purpose of printing or making a box is disclosed in
No. 0-48664, Japanese Patent Publication No. 52-27898, Japanese Patent Application Laid-Open No. 54-149176, and Japanese Utility Model Application Laid-Open No. 61-1.
It is known from Japanese Patent No. 5940 and the like. These devices sequentially feed paperboard in a state of being folded on a belt conveyor.

[0003] In a conventional storage conveyor in which the paperboard is dropped from the carry-in conveyor onto the carry-out conveyor in order to align the paperboard and change the folding direction, the paperboard is largely inclined forward (turning forward) on the carry-in conveyor. , The subsequent paperboard falls further forward and tilts, and the paperboard rises on the carry-out conveyor, causing trouble.
For this reason, in the past, unless a certain number of leading paperboards were manually aligned and stacked on a carry-out conveyor, the succeeding paperboards could not be successfully stacked, and this required a lot of trouble.

Therefore, the present inventor has already disclosed Japanese Patent Laid-Open No. 2000-2
As disclosed in Japanese Patent No. 47455, a flap capable of temporarily supporting the front edge of the paperboard which falls on the lower edge of the gate plate in a state of being inclined forward from the front edge of the carry-in conveyor while dropping is allowed to stand up and down. Has been proposed to improve the above drawbacks so that troubles can be avoided without human intervention.

[0005]

However, in the above-mentioned conventional paperboard feeding apparatus, the front edge of the paperboard that passes under the hanging flap hits the flap to crush the front edge of the paperboard, In some cases, the cover was turned over, and the value of the product could be impaired. Therefore, the present invention is to further improve the paperboard supply apparatus so as not to cause such crushing or turning over.

[0006]

For this purpose, a paperboard feeding apparatus according to the present invention comprises a carry-in conveyor for moving a paperboard in a state of being folded on a conveyor belt, and a gate board facing the conveyor belt. In a state in which the paperboard is folded by receiving the paperboard dropped from the front edge of the carry-in conveyor by movement and flowing out the paperboard from the gap between the gate plate and the conveyor belt. A paperboard supply device to be moved further,
At the lower edge of the gate plate, a flap capable of temporarily supporting the front edge of the paperboard that falls in a state inclined forward from the front edge of the carry-in conveyor in the middle of the fall is provided so as to be able to stand up and down freely, and the base end of the carry-out conveyor. Is provided with a sub-roller protruding above the conveyor belt, the paperboard dropped from the front edge of the carry-in conveyor is received on the sub-roller, and the peripheral speed of the sub-roller is lower than the speed of the conveyor belt of the carry-out conveyor. In the unloading direction.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. 1 and 2 show the entire paperboard supply apparatus according to the present invention. In the drawing, reference numeral 1 denotes a machine provided with a carry-in conveyor 2, and the carry-in conveyor 2 is a belt conveyor composed of four endless belt-shaped transfer belts 3a to 3d. The edge is pivotally supported by a bearing 4 with a bearing 4. Reference numeral 5 denotes a drive motor for driving the carry-in conveyor 2. Reference numeral 6 denotes a revolving frame pivotally supported by a bearing 7 provided on a rear upper edge of the machine base 1. The revolving frame 6 comprises a cylinder 8
1 is tilted with the bearing 7 as a fulcrum,
From the vertical upright state as shown by the broken line in FIG. Two tracks 9 are provided in the revolving frame 6, and the paperboard 10 is moved from the revolving frame 6 by the motor drive of the tracks.
It is configured so that it can be transported in a state of being folded up. Although there are various types of these components, the details are omitted because they are not directly related to the present invention.

Reference numeral 11 denotes an unloading conveyor fixed horizontally to the machine base 1 so that the base end 12 is located below the distal end of the infeed conveyor 2, and 13a to 13d denote four endless conveyors constituting the unloading conveyor. A belt-shaped transport belt, 14 is the unloading conveyor 1
1 is a driving motor. 15 is a gate-type support frame 16
Is a gate plate supported so as to straddle the conveyor belts 13a to 13d. The gate-type support frame 16 has rail bases 17 at both ends of which are provided on both sides of the unloading conveyor 11.
It is slidably supported on the upper side, and is provided so as to be movable along the longitudinal direction of the carry-out conveyor by pulling a motor by an endless chain 19. In this way, the gate plate 15 is provided so that the set position can be adjusted in the longitudinal direction of the carry-out conveyor 11. As shown in FIG. 4, the gate plate 15 has a distal end formed in an arc shape (arc shape having a large radius of curvature).

As shown in FIGS. 3 to 6, a pair of support plates 20 are fixed to the gate-shaped support frame 16, and guide shoes 21 provided on the support plates 20 are attached to both side edges of the gate plate 15. The gate plate 15 is supported so as to be vertically movable by matching the guide rail 22 provided. Reference numeral 23 denotes a motor provided for moving the gate plate 15 up and down. The rotation of the motor is transmitted to a transmission shaft 25 via a transmission chain 24, and a gear 26 fixed to the transmission shaft 25 is connected to the gate plate 1 by a gear.
5 is engaged with a rack 27 fixed to the rear surface. Thus, the gate plate 15 is provided so that the set height can be adjusted.

A bearing 30 is provided at the lower edge of the gate plate 15 to rotatably support the flap 31, and a lever 32 and a cylinder 3 projecting from the back of the flap 31.
3 via a pin 34, and the cylinder 3
The flap 31 is provided so as to be able to stand up and down by extending and retracting the flap 3.

Reference numeral 35 denotes a pusher provided below the front edge of the carry-in conveyor 2 to press and align the paperboard forward, and 36 denotes a cylinder for moving the pusher forward and backward.

According to the present invention, the sub-roller 40 is supported on the roller shaft 38 by the bearing 39 on the base end portion 12 of the carry-out conveyor 11, so that the peripheral surface of the sub-roller 40 is conveyed by the conveyor belts 13a to 13a.
3d, the endless chain 4 is attached to a sprocket 42 fixed to the base shaft 41 of the unloading conveyor 11 and a sprocket 43 fixed to the roller shaft 38.
When the conveyor 11 is driven, the sub-roller 40 is also driven to rotate at the same time. Note that the peripheral speed of the sub-roller 40 is
The outer diameters of the sprockets 42 and 43 and the sub-roller 40 are set so as to rotate in the unloading direction at a speed about 5 to 10% lower than the speed of about 13d. The sub-roller 4
As with the surfaces of the transport belts 13a to 13d, the surface 0 is rubberized in a raised manner so as to obtain a constant frictional resistance with the paperboard.

[0013] In the paperboard supply apparatus configured as described above,
Paperboard 1 folded and transported by carry-in conveyor 2
By holding the flap 31 in an upright state beforehand as shown in FIG. 6 before the leading part of the carry-in conveyor 2 falls from the front edge of the carry-in conveyor 2, The front edge of the paperboard 10 that falls in the forward inclined state is temporarily supported by the flap 31 during the fall. The trailing edge of the paperboard 10 is then received on the sub-roller 40. Then, when the paperboards 10 are appropriately stacked, the cylinder 33 is contracted to make the flaps 31 hang down. Then, the lowermost paperboard 10 has its trailing edge received on the sub-roller 40 and only the leading edge has the conveying belts 13a to 13a.
d, the paperboard gradually flows through the gap g between the lower edge of the flap 31 and the transport belt as shown in FIG. Then, the sheets are successively sent out to a printing machine or a box making machine in an aligned state in a direction opposite to that when the folding direction is on the carry-in conveyor 2.

Since the peripheral speed of the sub-roller 40 is lower than that of the conveyor belts 13a to 13d, the paperboard 10 whose rear edge is received on the sub-roller 40 has a leading paperboard at the speed of the conveyor belt. Is conveyed slowly, while the front edge of the paperboard 10 always passes through the gap g smoothly without strongly contacting the flap 31, and the front edge is crushed as in the related art,
There is no fear of turning over.

The pusher 35 is connected to the carry-out conveyor 11.
The gate plate 15 moves forward and backward in the direction of the flap 31 to press and align the plurality of paperboards dropped on the conveyor belt at the base end so as to be in a straight stacked state.

Since the gap g can be adjusted by providing the gate plate 15 so that the set height can be adjusted, the folded state of the paperboard fed onto the carry-out conveyor 11 can be freely adjusted. Also, the set height of the sub-roller 40 is adjusted at the same time. In addition, since the gate plate 15 is provided so as to be able to adjust the set position in the longitudinal direction of the carry-out conveyor 11, setting according to the size of the paperboard becomes possible. In addition, since the leading edge of the gate plate 15 is formed in an arc shape, the contact portion with the front edge of the paperboard 10 is smoothly displaced, which is also beneficial in eliminating damage to the front edge of the paperboard 10. Is acting on.

The embodiment of the present invention shown in FIG.
The transmission roller 50 is fixed to the base shaft 41, and the rollers 51 and 52 are provided. An endless belt 53 is stretched over each roller, and the endless belt is conveyed at the base end of the unloading conveyor 11 to the transport belts 13a to 13a. 13d so that the endless belt rotates in the unloading direction at a speed lower than the speed of the transport belts 13a to 13d so that the paperboard dropped from the loading conveyor 2 is received on the endless belt. However, it is a matter of course that the present invention may be constituted by an equivalent of the sub-roller 40 like the belt 53.

[0018]

As described above, in the paperboard feeding apparatus of the present invention, the front edge of the paperboard which falls on the lower edge of the gate plate in a state inclined forward from the front edge of the carry-in conveyor is temporarily supported in the middle of the fall. And a sub-roller protruding above the conveyor belt is provided at the base end of the carry-out conveyor, and the paperboard dropped from the front edge of the carry-in conveyor is received on the sub-roller. Is rotated in the unloading direction so that the peripheral speed is lower than the speed of the conveyor belt of the unloading conveyor. It has the beneficial effect of not damaging the front edge or damaging the cover.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a paperboard supply apparatus according to the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is an enlarged cross-sectional view taken along line AA of FIG. 1;

FIG. 4 is an enlarged view taken along line BB of FIG. 1;

FIG. 5 is an enlarged view taken along line CC of FIG. 1;

FIG. 6 is an enlarged sectional view taken along line DD of FIG. 1;

FIG. 7 is an operation state diagram of FIG. 6;

FIG. 8 is a cross-sectional view of a main part showing another embodiment of the paperboard supply apparatus according to the present invention. .

[Description of Signs] 2 Loading Conveyor 3a to 3d Conveying Belt 10 Paperboard 11 Conveying Conveyor 13a to 13d Conveying Belt 15 Gate Plate 16 Gate Support Frame 18 Rail 20 Support Plate 21 Guide Shoe 22 Guide Rail 27 Rack 30 Hinge 31 Flap 33 Cylinder 35 Pusher 38 Roller shaft 40 Sub-roller 41 Base shaft 42,43 Sprocket 44 Endless chain g Clearance

Claims (2)

[Claims] 1. A carry-in conveyor for moving a paperboard in a state of being folded on a conveyor belt, and a carry-out conveyor in which a gate plate is straddled so as to face the conveyor belt.
A paperboard supply device that receives the paperboard dropped from the front edge of the carry-in conveyor by movement and flows the paperboard out of the gap between the gate plate and the transport belt to further move the paperboard in a folded state. In addition, a flap capable of temporarily supporting the front edge of the paperboard that falls in a state inclined forward from the front edge of the carry-in conveyor at the lower edge of the gate plate in the middle of the fall is provided so as to be able to stand up and down freely. A sub-roller is provided at the base end to protrude above the conveyor belt, and the paperboard dropped from the front edge of the carry-in conveyor is received on the sub-roller, and the peripheral speed of the sub-roller is lower than the speed of the conveyor belt of the carry-out conveyor. A paperboard feeder characterized by being rotated in a carry-out direction so as to have a low speed. 2. The paperboard supply apparatus according to claim 1, wherein the leading edge of the gate plate is formed in an arc shape.