JPS63208448A - Device for separating packed paper sheet - Google Patents

Abstract

PURPOSE:To separate securely automatically packed sheets of paper from the upper most stage ones by one stage at a time and send them to the next process by stacking a plurality of stages of packed sheets of paper, lifting them by one stage at a time, slanting backward the front surface of an extruding body suspended to a slide bed to extrude the uppermost stage sheets of paper and providing a projection on the lower end of said slant front surface. CONSTITUTION:When a lift table is stopped from ascending and a slide bed 16 and an extruding body 18 are propelled forward, packed sheets of paper 8 of the uppermost stage are extruded forward. During that extrusion air is jetted from an air nozzle 19 below said sheets of paper 8, so that said sheets 8 slide smoothly. Also, since the extruder 18 has the front surface 18a inclined and is urged downward by a spring, a projection 18b of the extruder 18 securely its said sheets without getting out of them during the extrusion when the extruder 18 advances even if the rear end of packed sheets are somewhat shorn off each other and the thicknesses of them are different. Thus, the packed sheets of paper 8 at the uppermost stage can be securely separated and extruded to be sent to the unpacking position and the like.

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. Related to paper separating device.

``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.

The present invention enables packaging sheets stacked in multiple stages to be automatically separated one stage at a time starting from the topmost one and automatically sent to, for example, an opening position, and also enables the separation to be performed accurately. The purpose is to

"Means for Solving the Problem" In order to achieve this objective, the separating device of the present invention stacks packaging sheets wrapped in a predetermined number of layers with packaging sheets in multiple stages, and A lift table that is raised to a predetermined height, a slide table that is slid back and forth along a guide rod by the rotation of the screen 1-, and a slide table that pushes the rear end of the tenth stacked sheet on the lift table. A pushing body is provided vertically on the sliding table for movement, and the front surface of the pushing body is inclined backwardly, and a protrusion is provided at the lower end of the slope.

"Function" According to the device of the present invention, the packaging sheets stacked in multiple tiers are lifted one by one by the lift table, and the rear end of the top tier comes into contact with the front surface of the pusher. When this pushing body moves forward together with the sliding table, the uppermost packaging sheet is pushed and moved forward. At this time, since the front surface of the pushing body is inclined, even if the rear edge of the wrapping sheet is misaligned or its thickness is different, the rear edge of the wrapping sheet will remain on the pushing body. is guided by the sloping front surface of the container and engages with its protrusion, and only the uppermost packaging sheet is pushed.

"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/+1 feeding section 2, and a loading/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 Subroge Sotoboile 6 which is meshing with 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 stacked in multiple stages on Paleso I-J: and are loaded onto this lift table 4 by a forklift or the like.

The lifting/pushing section 1 also has a positioning mechanism for positioning the uppermost packaging sheet 8 from side to side, and an unsealing/Ill feeding section 2 for the positioned packaging sheet 8. A pushing mechanism 9 that pushes the wamp 7 to the side and a 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. J-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 backwardly, and a protrusion 18b 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 comes into contact with the front surface 18a of the pusher 18 and pushes it slightly against the spring, this is detected by the sensor. , the lifting operation of the lift table 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, the pushing body 18 is
Since the front surface 18a is inclined as described above and is biased downward by the spring, even if the position of the rear end of the top packaging sheet 8 is slightly shifted when it stops, the thickness Even if the pushing body 18 moves forward, the engagement between the protrusion 18b and the rear end of the packaging sheet 8 will be achieved accurately, and the engagement will not come off during the pushing motion. There isn't.

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. Then, while the wamp 7 is moving forward to that point, the left and right 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 cutter motors 24, and their positions do not move back and forth, but there are screw mechanisms 24 on the left and right sides.
The position can be adjusted at the same time using a. The packaging sheet 8 whose front end is positioned by the front opening position stopper 22 is moved by a disc-shaped front cutter 2 that slides leftward or rightward along a cutter rail 25 while rotating horizontally.
6 cuts the entire front length of the wamp 7. A cutter motor 27 that rotates this front cutter 26 is attached to a cutter sliding base 28 mounted on the cutter rail 25.
The cutter slide table 28 is slid by, for example, a chain drive.

When the front ends of the right and left sides and the entire front length of the wamp 7 are cut in this way, the plurality of lower suction cups 29 attached to the lower opening plate 21 and the plurality of upper suction cups attached to the upper opening plate 30 are cut. Air suction by the suction cups 31 starts, and the lower and upper surfaces of the wamp 7 are connected to these suction cups 29. ．． 31, the upper surface of the lower opening plate 21 and the upper suction cup 31
is adsorbed to. 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. The upper suction cup 31 is provided to protrude from the lower surface of the upper opening plate 30.

The lower opening plate 21 has its left and right ends pivotally supported by a shaft 33, and is rotated up and down by a motor or cylinder (not shown), and the upper opening plate 30 is rotated up and down by the 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.

When the wamp 7 is attracted as described above, the lower opening plate 21 rotates downward as shown by the chain line in FIG. The cut part 7 of the cut wamp 7 is the cut part 7 above and below the cutting line.
It is divided into parts a and 7b and opened by turning them both upward and downward, and the front end is opened, 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. In addition, the exposed sheet 8
As the lower opening plate 21 rotates downward, the front end of a is curved and hangs downward from the support roller 20, and there is a gap between the front end and the lower cut portion 7b of the wamp 7. , air is blown from the air injection needle 34.

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 sheet 8a whose front end has been lifted is extracted forward from the wamp 7 by the extraction mechanism 37 as follows, and placed on a gondola-shaped conveyance table 38.

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 first general feeding 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 mounting portions 38c at the lower ends of the upper frame portion 38a. The clamp slider 41 of the extracting mechanism 37 is configured so that the clamp 43 can pass through the cutout 38d between the left and right placing parts 38c. The center portion of the upper frame portion 38a of this conveyance table 38 is connected to a sleeve 45 that is propelled by a single general extraction screw 44 parallel to the extraction screw 40, and the left and right frame portions 38b are connected to the left and right conveyance table rails. 46. Air injection nozzles 47 that inject air inwardly are attached to the front ends of the left and right mounting portions 38c so that their positions can be adjusted. The unloading screw 44 also receives the rotation of the unloading and one-step forwarding motor 39 via a 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 cup 31.29 with its mouth open, the sheet 8a is extracted 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 shown in ``2'', so that the separation between these parts, that is, the sheet 8a, is caused. 8a is smoothly extracted. The extracted sheet 8a is placed on the left and right loading sections 3 of the conveyance table 38, which is waiting at a predetermined position.
It will be mounted on board 8c. When the clamp 43 advances to a predetermined position midway, the rotation of the extraction/conveyance motor 39 is also transmitted to the first general feed screw 44, and the first general feed table 38 moves forward at the same speed as the clamp 43, and the sheets are removed. 8a is the unpacking/conveying section 2
1lli are sent to the loading/aligning section 3.

Next, to explain this stacking/aligning section 3, there is a stacking table 48 for stacking sheets 8a.
It is suspended by a chain 49 in the same manner 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 each time a stack of sheets 8a is stacked, the height of the top surface of the stacking table 48 is always constant. It will be lowered by that amount. This tall sheet of paper 8a
When no paper is loaded, the height of the stacking table 48 itself is slightly lower than the height of the stacking table 48 so as to create a step between it and the loading section 38c of the transport platform 38.

Also, loading/aligning section 3 and unpacking/IB! A stopper 50 is rotatably mounted around a shaft 51 at the boundary with the feeding section 2 . The pivot position of this stopper 50 is
The position corresponds to the missing part 38d between the left and right placing parts 38c. 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 sheets 8a newly loaded on the stacking table 48'-, and a front aligning plate 53 for pushing and aligning the front ends toward the stopper 50. are each mounted so as to be slid along the guide rod by a cylinder. Further, on the upper part of the stacking/aligning section 3, there are left and right pushers 54 (Fig. 9) that push the left and right corners of the front end of the newly stacked uppermost sheet 8a from above, and are movable up and down. It is installed vertically. 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 that, the conveyance table 38 immediately retreats, but the trailing end of the sheet 8a mounted on it collides with the stopper 50 and is restricted from following the retreat, so that the sheets 8a already loaded on the loading table 48 The paper is unloaded onto the paper 8a from the front end. 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 started, the conveyor table 38
Air is injected from the air injection nozzles 47 on both the left and right sides of the sheet 8a, and the air is blown onto the left and right sides of the sheet 8a being unloaded from the conveyor table 38. At this time, the height of the loading section 38c of the conveyance table 38 is slightly higher than the upper surface of the stacking table 48, and there is a step between them, so that the sheets to be unloaded are
A is bent by this step, and air is injected from the air inlet nozzle 47 to the bent portions on the left and right sides, so that air can be injected between the sheets 88 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 first general feeder 38 retreats to the unpacking/conveying section 2, the pusher 54 rises, and the front alignment plate 53 is propelled to move the newly loaded sheets 8a back and forth along with the sheets slightly below it. The positions are aligned, and the left and right alignment plates 52 are pushed to align the left and right positions. After this, stopper 5
0 is laid down, and the clamp 43 is also returned to the unsealing/conveying section 2 and retreated.

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.

Thereafter, the empty wamp 7 is discharged in the raising/pushing section 1 by the wamp discharging mechanism 10 as follows.Finally, this wamp discharging 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. Rubber discharge healds 58 are mounted in parallel for circulation. 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 J.56.

The pushing body 18 that pushed the packaged sheet 8 toward the unsealing/IM sending section 2 as described above moves the empty wamp 7 to the suction cup 2 as described above.
It moves forward and remains in the stopped position until it is released from 9.31, 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 upper surface of the empty wamp 7, and then rises to lift the wamp 7 a little. 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, and the cylinder 59 operates and rotates.
The frame 56 is rotated downward, and the discharge heald 58 is pressed against the two sides 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 discharge is completed, the lift table 4 is raised by one stage of the packaging sheets 8 loaded thereon, and then the above series of operations is repeated.

"Effects of the Invention" As described above, according to the present invention, packaging sheets are stacked in multiple stages on a lift table, and the front surface of the pushing body that pushes the rear end is inclined as if it were a blank. Since a protrusion is provided at the bottom edge of the packaging sheet, even if the rear edge of the packaging sheet is misaligned or the thickness is different, only the two-most packaging sheets can be separated accurately. It can be pushed and sent to an 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 opening operation, Figure 7 is a side view showing the sheet removal operation, Figure 8 is a front view of the conveyor table and clamp, and Figure 9 is a side view showing the loading and air filling operation. It is. 1... Lifting/pushing section, 2... Unpacking/conveying section, 3... Loading/aligning section, 4... Lift table, 5... ...Chain, 6...
・Sprocket wheel, 7... Wamp (wrapping 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, lla... Ruler adjustment mechanism, 12...
...Pushing body for positioning, 13...Screw for positioning, 13a...Motor for positioning,
14...Pushing screw, 15...
Guide rod, 16...Sliding table, 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...Holding mechanism, 36.
... Lifting piece, 36a ... Horizontal shaft, 37
...Extraction mechanism, 38...Transportation platform, 38
a...Second frame part of IB feeder, 38b...
・Left and right frame parts of the conveyor table, 38c... Placement part of the conveyor table, 38d... Missing part of the 1ull feeder table, 39.
...Moke for ejection and 1 forwarding, 40...Screw for ejection, 41...Clamp sliding base, 4
2...Clamp rail, 43...Clamp, 44...1 Screw for public use, 45...
... Sleeve, 46 ... Transport platform rail, 4
7... Air injection nozzle, 48... Loading table, 49... Chain, 50...
...Stopper, 51...Shaft, 52...
Left and right alignment slope, 53...Front alignment plate, 54...
...butsusha, 55...suction cup for returning wamp, 5
5a... Cylinder, 56... Rotating frame, 57... Support shaft, 58... Ejection heald, 59... Cylinder, 60・・・・・・
Emission information board.

Claims (1)

[Claims] 1. A lift table that stacks multiple stacks of packaging sheets wrapped in a predetermined number of packaging sheets and raises each stack to a predetermined height, and a lift table that slides back and forth along a guide rod by the rotation of a screw. and a pushing body vertically disposed on the sliding base to push the rear end of the uppermost packaging sheet on the lift table, and the front surface of the pushing body is A separating device for packaging sheets, characterized in that it is sloped downward and a protrusion is provided at the lower end of the slope.