JPS63208450A - Method for separating packed paper sheet - Google Patents

Abstract

PURPOSE:To automatically separate and smoothly send packed sheets of paper stacked on a plurality of stages by one stage at a time by extruding said packed sheets of paper on the uppermost stage while jetting air between said sheets and ones on the next lower stage from an air nozzle. CONSTITUTION:When, after the stoppage of lifting a lift table, a screw 14 is rotated to propel forward a slide bed 6 and an extruder 18, a projection 18b on the extruder 18 abuts against the rear end of packed sheets of paper on the uppermost to extrude forward the packed sheets of paper. During the extrusion, air is jetted from an air nozzle 19 between the packed sheets of paper on the uppermost stage and next lower stage. Thus, the packed sheets of paper on the uppermost stage can slide smoothly on those on the next lower stage, so that the packed sheets of paper can be separated and sent automatically smoothly from the uppermost stage ones by one stage at a time.

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention provides a method for automatically separating packaging sheets stacked in multiple tiers one by one starting from the top tier, for example, in order to open the packaging sheets. Concerning paper separation methods.

``Prior art'' Conventionally, when printing a large number of large sheets wrapped in packaging sheets such as wamps, the wrapping sheets stacked in multiple tiers were manually stacked in bundles. At wholesalers, the packaging sheet is cut using a knife, etc., the package is opened, and the sheets are taken out.The sheets are separated by hand to avoid double-sheet feeding, then stacked again, and then sent to the printing machine. Ta.

"The problem that the invention attempts to solve" Therefore, it required a lot of labor and was inefficient.

An object of the present invention is to automatically separate packaging sheets stacked in multiple tiers one by one, starting from the top tier, and automatically and smoothly feed them, for example, to an opening position. .

"Means for Solving the Problem" In order to achieve this objective, the method of the present invention uses a pushing body to push the rear end of the packaging sheet in the uppermost layer among the packaging sheets stacked in multiple stages. While moving, air is injected from an air nozzle that follows the pushing body between the uppermost packaging sheet and the packaging sheet one stage below it.

``Function'' According to this method, the top packaging sheet and its first
The packaging sheets at the bottom are smoothly separated by air jetted between them.

"Example" An example of the present invention will be described below in detail with reference to the drawings.

The apparatus according to the present invention is roughly divided into a lifting/pushing section 1, an unsealing/conveying section 2, and a stacking/aligning section 3, as shown in Fig. 1.2.

A lift table 4 is suspended horizontally at its four corners by chains 5 on the lifting/pushing part 1.
is the sprocket wheel 6 that is meshing with the chain 5
When it is rotated by a motor, it is raised while remaining horizontal. Packaging sheets 8 wrapped in packaging sheets, for example, wamps 7 (FIG. 6), are loaded onto the lift table 4 by a forklift or the like while being stacked in multiple stages on a pallet.

1 The lifting/pushing part 1 also has a positioning mechanism on its upper part for positioning the uppermost packaging sheet 8 from side to side, and a positioning mechanism for positioning the packaging sheet 8 in the uppermost tier on the side of the unsealing/conveying part 2. The pushing mechanism 9 that pushes the wamp 7 and the wamp ejecting mechanism 10 that ejects the wamp 7 after opening are arranged as follows.

As shown in FIG. 3, the positioning mechanism includes a vertical ruler plate 11 on the right side, a ruler adjustment mechanism 11a that adjusts its position, a plurality of positioning pushing bodies 12 on the left side, and a positioning screw that propels it to the right. 13 and a positioning motor 13a that rotates the same, and a pushing body 12 pushes the left end of the uppermost packaging sheet 8 to bring its right end into contact with a ruler plate 11 for positioning.

The pushing mechanism 9 includes a pushing motor 9a as shown in FIG.
(FIGS. 1 and 2), a sliding table 16 that is screwed onto the pushing screw 14 and slides back and forth along the guide rod 15 due to its rotation, and the sliding table 1
6 and a plurality of pushing bodies 18 which are vertically slidably installed by rods 17.

A spring is attached to the rod 17 in order to urge the pushing body 18 downward. The front surface 18a of the pushing body 18 is inclined backward, and a protrusion 18h is formed at the lower end of the inclination. Further, an air nozzle 19 is attached to the pushing body 18 to spray air forward.

When the lift table 4 rises and the rear end of the uppermost packaging sheet 8 collides with the front surface 18a of the pushing body 18 and rises a little against the spring, this is detected by the sensor and the lift table The upward movement of step 4 is stopped. Thereafter, when the screw 14 rotates and the sliding table 16 and pushing body 18 are propelled forward as shown in FIG. The packaging sheet 8 is pushed forward while being in contact with the rear end. During this pushing, air is injected from the air nozzle 19 between the packaging sheet 8 on the top tier and the packaging sheet 8 one tier below it, so the packaging sheet 8 on the top tier is It slides smoothly on the packaging sheet 8 at the bottom of the tier. Further, since the front surface 18a of the pushing body 18 is inclined as described above and is biased downward by the spring, the position of the rear end of the top packaging sheet 8 may shift slightly when the pushing body 18 stops. Even if the pusher 18 moves forward, the protrusion 18b and the rear end of the packaging sheet 8 will be accurately engaged, and even if the pusher 18 has a different thickness, the engagement will be ensured by pushing. It will not come off during movement.

The positioning pusher 12 of the positioning mechanism is also mounted in the same manner as the pusher 18, and an air nozzle is also attached thereto, and the push operation for positioning is performed in the same manner as described above.

Since the wamp discharge mechanism 10 operates in the final process, its configuration will be described later.

Next, the unsealing/conveying section 2 will be explained.

The top packaging sheet 8 that has been pushed forward by the pushing body 18 as described above is supported by the support rollers 20 that are horizontally suspended, and then is placed under the horizontally long sheet that is in the horizontal state. The lower opening plate 21 is supported following the side opening plate 21.
The front end collides with a front opening position stopper 22 protruding from the front end of the bag and stops. While the wamp 7 is moving forward, the right and left side surfaces of the wamp 7 are automatically cut by the horizontally rotating disk-shaped left and right side cutters 23 as it moves forward.

These side cutters 23 are individually rotated by a cutter motor 24, and although their positions do not move back and forth, they can be adjusted to the left and right at the same time by a screw mechanism 24a. The packaging sheet 8, whose front end is positioned by the front opening position stopper 22, is moved along the entire front surface of the wamp 7 by a disc-shaped front cutter 26 that slides left or right along the cutter rail 25 while rotating horizontally. is cut off. A cutter motor 27 that rotates the front cutter 26 is attached to a cutter slide 28 mounted on the cutter rail 25, and the cutter slide 28 is slid by, for example, a chain drive.

When the front ends of the right and left sides of the wamp 7 and the entire length of the front 6 are cut off in this way, the lower suction cups 29 attached to the lower opening plate 21 and the upper opening plate 30 are used to remove the parts. Air suction by the plurality of suction cups 31 on the upper side starts, and the lower and upper surfaces of the wamp 7 are sucked by these suction cups 31.
31, it is attracted to the upper surface of the lower opening plate 21 and the upper suction cup 31. The lower suction cup 29 is attached to the lower side of the lower opening plate 21 and faces the suction hole 32 as shown in FIG. An upper suction cup 31 is provided protruding from the lower surface of the second opening plate 30.

The lower opening plate 21 has its left and right ends pivotally supported by a shaft 33, and is rotated downward by a motor or cylinder (not shown), and the upper opening plate 30 is rotated downward by a cylinder. Air injection needles 34 are fixedly disposed toward the front at a plurality of locations on the left and right sides slightly below the axis of the lower opening plate 21, and air is injected from these.

2, when the wamp 7 is attracted, the lower opening plate 21 rotates downward as shown by the chain line in FIG.
- The side sealing plate 30 is rotated in three directions, and the wamp 7, whose front end has already been cut, is divided into upper and lower cut parts 7a and 7b at the cutting line, and is turned over both upward and downward. When the package is opened, the front end becomes open, and the front end of the sheet 8a in the wamp 7 is exposed. At this time, the air injection needle 34 sticks into a plurality of left and right places of the lower cut portion 7b to be opened from the rear side, and injects air toward the front of the lower cut portion 7b. Further, as the lower opening plate 21 rotates downward, the exposed front end of the sheet 8a is curved and hangs downward from the support roller 20, and the front end and the lower side of the wamp 7 are Air is blown from the air injection needle 34 between the cut portion 7b and the cut portion 7b.

The sheet 8a with its front end hanging down in this manner is lifted to a horizontal state by the L-shaped lifting piece 36 of the lifting mechanism 35. At this time, since air is injected from the air injection needle 34 as described above, even if the front end of some of the lower sheets 8a is separated, it will not be caused by the air injection. It will be pushed up and all of it will be lifted up. The lifting pieces 36 are fixed to a plurality of positions on the left and right sides of a horizontal shaft 36a that is rotated by a motor or a cylinder. The single wafer IE 8a whose front end has been lifted is extracted forward from the wamp 7 by the extraction mechanism 37 as shown below, and transferred to a gondola-shaped conveyance table 38.
be mounted on top.

The extraction mechanism 37 transmits the rotation of the extraction and conveyance motor 39 to the extraction screw 40 via the transmission mechanism, and the rotation of the screw 40 moves the clamp slide table 41 to the clamp rail 42 (FIG. 8). Slide it back and forth along the A pair of upper and lower clamps 43 operated by cylinders are mounted on this clamp sliding table 41 as is conventionally known.

As shown in FIG. 8, the conveyance table 38 consists of an upper frame portion 38a, left and right frame portions 38b hanging down from both left and right ends of the upper frame portion 38a, and horizontal left and right placement portions 38c at the lower ends of the upper frame portion 38a. The clamp slider 41 of the mechanism 37 is configured so that the clamp 43 can pass through the cutout 38d between the left and right mounting portions 38c. The center portion of the upper frame portion 38a of this 1ull feeder 38 is connected to a sleeve 45 that is propelled by a single-pronged screw 44 parallel to the extraction screw 40, and the left and right frame portions 38h are connected to the left and right conveyor tables. Guided by rails 46. Its left and right placement parts 38
Air inlet nozzles 47 that inject air inwardly are attached to the front end of c so that their positions can be adjusted. The rotation of the unloading/conveying motor 39 is also transmitted to the unloading screw 44 via the transmission mechanism.

When the front end of the sheet 8a is lifted by the lifting piece 36 as described above, the clamp 43 is moved back by sliding of the clamp sliding base 41, and after the sheet 8a is clamped vertically by the operation of the cylinder, The clamp 43 immediately advances. During this time, the upper and lower cut parts 7a and 7b of the wamp 7
Since the sheet 8a is continuously sucked by the suction cups 31 and 29 with its mouth open, the sheet 8a is pulled out from the wamp 7. During this extraction, air is blown from the air injection needle 34 between the cut portion 7b on the lower side of the wamp 7 and the sheet 8a as described above. Extraction is carried out smoothly. The extracted sheet 8a is
The left and right loading sections 38 of the transport platform 38 are waiting at a predetermined position.
It is mounted on c. When the clamp 43 advances to a predetermined position in the middle, the rotation of the extraction/conveyance motor 39 is also transmitted to the conveyance screw 44, and the conveyance table 38 moves to the clamp 43.
The sheets 8a are generally fed from the unsealing/conveying section 2 to the stacking/aligning section 3.

Next, the stacking/aligning section 3 will be explained. There is a stacking table 48 for stacking sheets 8a.
It is suspended by a chain 49 in the same way as the lift table 4 of the lifting/pushing section 1, and is raised and lowered in the same manner. This stacking table 48 has a sensor that detects the stacking height of the sheets 8a stacked thereon, and changes the stacking height every time one layer of sheets 8a is stacked so that the height of the top surface of the stack is always constant. It will be lowered by the amount. This tall sheet of paper 8a
When no fM is loaded, the height of the loading table 48 itself is slightly lower than the height of the loading table 48 so as to create a step between it and the loading section 38c of the fM feeder 38.

In addition, at the boundary between the loading/aligning section 3 and the unpacking/conveying section 2,
A stopper 50 is rotatably mounted around a shaft 51. The pivot position of this stopper 50 corresponds to the missing portion 38d between the left and right placing portions 38c of the conveyor table 38. The stopper 50 is raised and lowered by a cylinder (not shown), and is normally laid down, but when raised, its free end becomes higher than the height of the mounting portion 38c.

The loading/preparing section 3 also includes a left-right aligning plate 52 for pushing and aligning both left and right ends of the sheets 8a newly stacked on the stacking table 48, and a front aligning plate 53 for pushing and aligning the front ends facing the stopper 5o. and are each mounted so as to be slid along the guide rod by a cylinder. Furthermore, left and right pushers 54 (FIG. 9) that push the left and right corners of the front end of the newly stacked top sheet 8a from above are vertically movably suspended above the stacking/aligning section 3. It is set up. These buttons 54 are moved up and down by cylinders.

As mentioned above, the conveyance platform 38 carries one stage of sheets 8a.
advances to a predetermined position above the loading table 48,
When the clamp 43 releases its grip, the stopper 50 stands up as shown in FIG.

After this, the TA feeder 38 immediately retreats, but the rear end of the sheet 8a mounted on it collides with the stopper 50 and the following retreat is restricted, so that the sheet 8a is already loaded on the loading table 48. It is unloaded onto the sheet 8a from the front end as it is. Almost at the same time as the conveyor table 38 begins to move backward, the pusher 54 descends, and when only the front end of the sheet 8a has been unloaded, the pusher 54 presses the right and left corners of the sheet 8a from above. Immediately after the pressing starts, air is injected from the air injection nozzles 47 on both the left and right sides of the IM feeding table 38, and the air is blown onto the left and right side surfaces of the sheet 8a being unloaded from the conveying table 38. At this time, the height of the loading section 38c of the conveyor table 38 is a little higher than the top surface of the loading table 48, and there is a step between them, so the sheet 8a to be unloaded is bent by this step, and the sheet 8a is bent from side to side. Since air is injected from the air inlet nozzle 47 to the bent portion of the side surface, air can be injected between the sheets IF and B a well. Since the bent portion moves rearward as the conveyor table 38 moves backward, the air is inflated over the entire length of both left and right sides of the sheet 8a.

When the conveyor table 38 retreats to the unsealing/conveying section 2, the pusher 54 rises, and the front alignment plate 53 is propelled to move the newly loaded sheet 8a along with the sheet slightly below it to the front and rear positions. The left and right alignment plates 52 are moved to align the left and right positions. After this, stopper 50
is laid down, and the clamp 43 also returns to the unsealing/conveying section 2 and retreats.

While the stacking operation of the sheets 8a as described above is being carried out,
In the unpacking/conveyance section 2, the air injection by the air injection needle 34 is stopped, and the wamp 7, which has been emptied after the sheet 8a has been pulled out as described above, is released from the suction by the suction cups 29 and 31, and the upper side The unsealing plate 30 is rotated downward and the lower unsealing plate 21 is rotated upward again, and the air injection needle 34 is extracted from the cut portion 7b on the lower side of the wamp 7.

After this, the empty wamp 7 is discharged by the wamp discharge mechanism 10 in the raising/pushing section 1 as follows.Finally, this wamp discharge mechanism 10 will be explained.

As shown in FIG. 4, a wamp return suction cup 55 is vertically provided on the sliding table 16 on which the pushing body 18 is mounted so that it can be moved up and down by a cylinder 55a. Further, as shown in FIG. 3, a rotating frame 56 is mounted on the upper right side of the lifting/pushing unit 1 so as to be movable up and down about a support shaft 57. A rubber discharge belt 58 is installed in parallel so that it can circulate. The rotation frame 56 is rotated up and down by a cylinder 59, and the discharge belt 58 is circulated by a motor (not shown) via a pulley attached to a support shaft 57. A discharge guide plate 60 is installed slightly below the rotating frame 56.

The pushing body 18 that pushed the packaging sheet 8 toward the unsealing/conveying section 2 as described above moves the empty wamp 7 to the suction i2 as shown in
9. ．． Until it is released from 31, it remains in the forward and stopped position, and therefore the wamp return suction cup 55 is also in this position. The wamp return suction cup 55 descends at this position and sucks the top surface of the empty wamp 7, and then rises to remove the wamp 7.
Hold it for a while. Thereafter, the pushing body 18 retreats, and the empty wamp 7 is returned while being sucked by the suction cup 55. When the pushing body 18 retreats to its original position and stops,
The suction of the suction cup 55 is released, the cylinder 59 is activated, the rotating frame 56 is rotated downward, and the discharge heald 58 is pressed against the upper surface of the wamp 7. At this time, since the discharge belt 58 is circulating, the empty wamp 7 is discharged to the left of the lifting/pushing section 1 while being guided on the discharge guide plate 60.

When the ejection is completed, the lift table 4 is raised by one stage of the packaging sheets 8 loaded thereon, and then the above-mentioned operations are repeated.

``Effects of the Invention'' As described above, according to the present invention, while pushing the rear end of the uppermost packaging sheet among the packaging sheets with the pusher, the uppermost two packaging sheets are pressed. Since air is injected from an air nozzle that follows the pushing body between the leaf and the packaging sheet one level below it, only the topmost packaging sheet can be smoothly sent to the opening position, etc. .

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, with FIG. 1 being a simplified side view;
Fig. 2 is a plan view, Fig. 3 is a rear view of the packaging sheet positioning mechanism and the wamp ejection mechanism, Fig. 4 is a perspective view of the pushing mechanism, Fig. 5 is a side view showing the wamp cutting operation, and Fig. 5 is a side view showing the wamp cutting operation. Figure 6 is a side view showing the unpacking operation, Figure 7 is a side view not showing the sheet removal operation, Figure 8 is a front view of the conveyance table and clamp, and Figure 9 is a side view showing the loading and air filling operations. It is a diagram. 1... Lifting/pushing section, 2... Unpacking/conveying section, 3... Loading/aligning section, 4... Lift table, 5... ...Chain, 6...
・Sprocket sotopoile, 7... Wamp (packaging sheet), 7a, 7b... Cutting part of the wamp,
8... Packaging sheet, 8a... Sheet,
9...Pushing mechanism, 9a...Pushing motor, 10...Wamp discharge mechanism, 11...
・Ruler plate, Ila... Ruler adjustment mechanism, 12...
...Pushing body for positioning, 13...Screw for positioning, 13a...Motor for positioning,
14...Pushing screw, 15...
Guide Rondo, 16...Sliding stand, 17...
...Rod, 18...Pushing body, 18a...
...Front surface of the pushing body, 18b...Protrusion of the pushing body,
19...Air nozzle, 20...Support roller, 21...Lower opening plate, 22...
・Stopper, 23...Side cutter, 24...
... Cutter motor, 24a ... Screw mechanism, 2
5...Cutter rail, 26...Front cutter, 27...Cutter motor, 28...
・Cutter sliding base, 29... Suction cup, 30...
・・Upper opening plate, 31・・Suction cup, 32・・・・
... Suction hole, 33 ... Shaft, 34 ... Air injection needle, 35 ... Lifting mechanism, 36 ...
...Lifting piece, 36a...Horizontal shaft, 37.
...Extraction mechanism, 38...Transportation platform, 38a
...... Upper frame part of the transport table, 38b... Left and right frame parts of the transport table, 38c... Placement part of the transport table, 3
8d... Missing part of the transport platform, 39... Motor for extracting and transporting, 40... Screw for extracting, 41... Clamp sliding table. , 42...
Clamp rail, 43... Clamp, 44...
...Export screw, 45...Sleeve, 46...Transportation platform rail, 47...Air injection nozzle, 48...Loading table, 49
...Chain, 50...Stopper, 5
1...Shaft, 52...Left and right alignment plate, 53
・・・・・・Maezorozaka, 54・・・Butsusha, 5
5...Wamp return suction cup, 55a...
Cylinder, 56...Rotating frame, 57 Old...
・Support shaft, 58...Discharge heald, 59...
...Cylinder, 60...Discharge guide plate.

Claims (1)

[Claims] 1. While pushing the rear end of the top packaging sheet among the stacked packaging sheets in multiple tiers with a pusher, the packaging sheet in the top tier and the packaging sheet one level below it are removed. A method for separating packaging sheets, characterized in that air is injected between the paper and the paper from an air nozzle that follows the pushing body.