JPS63203534A - Unsealing stacking method and device for packaging sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention "Industrial Application Field" The present invention automatically unwraps sheets that are wrapped in wrapping sheets in a predetermined number of layers before being applied to a printing machine, etc. This invention relates to a method and apparatus for unsealing and stacking packaging sheets, which are separated and then stacked.

``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 enable such work, which has conventionally been performed manually, to be performed automatically and efficiently.

"Means for Solving the Problems" Therefore, in the method of the present invention, packaging sheets wrapped in a predetermined number of layers with packaging sheets are stacked in multiple tiers, and each tier is raised to a predetermined height. The right and left sides of the packaging sheet are cut with a canter while moving forward one step. moreover,
Its forward movement is stopped and the front surface of the packaging sheet is cut with a cutter. After that, the top and bottom surfaces of the cut packaging sheet are sucked to open the packaging sheet vertically, and the unsealed one-layer sheet is held between the sheets and pulled out from the packaging sheet and placed on the conveyor. I will post it. Then, after moving this conveyance table forward and conveying one stage of sheets to a stacking position, the conveyance table is moved backward while blowing air to the sides of the sheets for one stage, and the sheets are stacked while being unloaded from there. .

Furthermore, the apparatus of the present invention for carrying out this method includes a lift table that stacks a predetermined number of stacked packaging sheets and lifts each stack to a predetermined height; There is a pushing mechanism that pushes the rear end of the top tier to move it forward, a left and right side cutter that cuts the left and right sides of the packaging sheet as it moves forward, and a side cutter that slides along the rail to cut the front side of the packaging sheet after it stops moving forward. A front cutter that cuts, an upper and lower opening mechanism that adsorbs the top and bottom surfaces of the cut packaging sheet and displaces it upward and downward, respectively, and a clamp that holds the unsealed one-stage sheet to separate the packaging sheet. an ejecting mechanism that extracts sheets from the stack, a loading table that can be raised and lowered, and the sheet is loaded onto the loading table by loading the extracted sheets, moving forward to the loading table, and then moving backwards. a conveyance table, an air injection mechanism attached to the conveyance table for blowing air into the sides of sheets loaded on the conveyance table, and a stopper for regulating the retreat of the sheets when the conveyance table retreats. That's what happens.

"Function" According to the method of the present invention, the packaging sheets stacked in multiple stages are raised one stage at a time and advanced so that only the topmost stage is unloaded. The surface will be cut automatically. Also, the front side is cut off after its forward movement has stopped.

Thereafter, the packaging sheet is opened vertically by suctioning its upper and lower surfaces, and in this state, the sheet is extracted from the packaging sheet and placed on a conveyance table. Then, after the conveyance table moves forward to the stacking position, it retreats and the articles are stacked while being unloaded from the conveyance table. At that time, air is blown into the sheet from the side to separate it.

Further, in the apparatus of the present invention, the packaging sheets are stacked in multiple stages on the lift table, and the rear end of the uppermost stage is pushed by the pushing mechanism to be unloaded. After the left and right sides of the packaging sheet are cut by a side cutter, the front face is cut by a front cutter that slides along a rail, and the packaging sheet is opened from the front end by upper and lower opening mechanisms. In this state, the sheet is held by clamps, drawn, and placed on a conveyance table. Then, the sheets are transported to the loading table by the forward movement of this transport table, and when the transport table retreats,
Following this is regulated by a stopper, so that it is unloaded and stacked on the loading table. At this time, air is introduced into the sheet from the side. The air inlet location moves along the side of the sheet as the conveyor moves backward.

"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.

The lifting/pushing mechanism @I also includes a positioning mechanism for positioning the uppermost packaging sheet 8 from side to side and pushing the positioned packaging sheet 8 toward the unsealing/conveying section 2. The pushing mechanism 9 that moves and the wamp ejection 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.
(FIG. 1.2), a sliding plate 16 that is screwed together with the pushing screw 14 and slides back and forth along the guide loft 15 by the rotation thereof, and the sliding plate 1
6 and a plurality of pushing bodies 18 vertically installed vertically slidably through a loft 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 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 plate 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 pushing body 18 moves forward, the protrusion 18b and the rear end of the packaging sheet 8 will be accurately engaged, and 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. 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 canter motor 24, and their positions do not move back and forth, but 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 canter motor 27 for rotating 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 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. The sucking f! Air suction by 1I31 is started, and the lower and upper surfaces of the wamp 7 are attracted to the upper surface of the lower opening plate 21 and the upper suction cup 31 by suction by these suction cups 29 and 31. The lower suction cup 29 is attached to the lower side of the lower opening plate 21, and its suction hole 3 is attached as shown in FIG.
2 is on the way. The upper suction plate 31 is the upper opening plate 30.
It is protruded from the bottom of the.

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. 6, and the upper opening plate 30 rotates upward, so that the front end has already been cut. The wamp 7 has cut parts 7a above and below the cut line.
, 7b and are opened by turning them both upward and downward, and 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. Also, the exposed sheet 8a
As the lower opening plate 21 rotates downward, the front end of the
It is curved and hangs downward from the support roller 20, and air is blown from the air injection needle 34 between the front end and the lower cut portion 7b of the wamp 7.

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 drawing mechanism 37 transmits the rotation of the extraction/conveyance motor 39 to the extraction screw 40 via the transmission mechanism, and the rotation of the screw 40 causes the clamp slide table 41 to be moved onto the clamp rail 42 (FIG. 8). Slide it back and forth. 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 upper frame portion 3 of this transport platform 38
The central part of 8a is a sleeve 45 that is propelled by an ejection screw 44 parallel to the ejection screw 40.
The left and right frame portions 38b are guided by the left and right conveyor 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 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. The other day, the upper and lower cut parts of Wamp 7? a, 7b
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. Make sure the extraction goes smoothly. The ejected sheets 8a are placed on the left and right loading sections 3 of the conveyor 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 extractor/transport motor 39 is also transmitted to the transport screw 44, and the transport table 38 moves the clamp 4
3, and the sheets 8a are conveyed from the unsealing/conveying section 2 to the stacking/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 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 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 mounting portion 38c of the feeding table 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 sheets 8a newly stacked 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. 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 that, the conveyance table 38 immediately retreats, but the rear end of the sheet 8a mounted thereon comes into contact with the stopper 50 ifi, and the following retreat is restricted, so that the sheets 8a already loaded on the loading table 48 The sheet 8a is unloaded from the front end, and almost at the same time as the conveyance table 38 begins to move backward, the pusher 54 descends, and when only the front end of the sheet 8a has been unloaded, the right and left corners of the sheet 8a are unloaded. The button 54 presses the button 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 conveyance table 38, and the air is blown onto the left and right side surfaces of the sheet 8a being unloaded from the conveyance 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 is injected between the sheets 88 well. Since the bent portion moves rearward as the conveyance table 38 retreats, air can be injected 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 lower cut portion 7b 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 utility 155 is vertically provided on the sliding plate 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 cup 29 as described above.
．． The wamp return service gi 55 remains in the forward and stopped position until it is released from the pump 31, and therefore the wamp return service gi 55 is also in this position. The wamp return service i55 descends at this position and adsorbs the upper surface of the empty wamp 7, and then rises to lift the wamp 7 a little. Thereafter, as the pushing body 18 retreats, the empty wamp 7 is returned while being attracted to the suction ff 155. 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 belt 58 is pressed against the upper surface of the wand 7. At this time, since the discharge belt 58 is circulating, the empty pump 7 is discharged to the left of the raising/pushing part 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 method of the present invention, the left and right sides of the packaging sheets are automatically moved forward one by one as if stacked in multiple stages, as if unloading. After stopping the advance and automatically cutting the front side, the packaging sheet is sucked and opened, and the sheet inside is extracted in that state, making the extraction efficient. can be done. At the same time as the sheet is extracted, the sheet is placed on a conveyor table, and after the conveyor table is advanced to the stacking position, it is moved backward and stacked while unloading the sheet, and at that time, air is blown into the sides of the sheet. Therefore, loading and paper handling by air pumping can be done efficiently.

Moreover, according to the apparatus of the present invention, the series of operations described above can be performed efficiently.

[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. ■... Lifting/pushing section, 2... Opening/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 plate, 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・Old・・Side cutter, 24・・・・
・Cutter motor, 24a... Screw mechanism, 25.
・・・・・・Cutter rail, 26・・Front cutter, 27・Old・・Cutter motor, 28・・Cutter sliding base, 29・・Old・・・Suction cup, 3o・・・... 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, 38d...
... Missing part of the conveyor table, 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.old...air inlet nozzle,
48... Loading table, 49 Old... Chain, 5o... Pa... Stopper, 51... Shaft, 5
2...Left and right alignment plate, 53...Front alignment plate, 54...button, 55...Wamp return suction cup, 55a... Cylinder, 56...
...Rotating frame, 57...Support shaft, 58.
...Discharge belt, 59...Cylinder, 6
0...Discharge guide board. Sai 4 figure

Claims (1)

[Claims] 1. A step of stacking packaging sheets wrapped in a predetermined number of layers with packaging sheets in multiple tiers and raising each tier to a predetermined height, and while advancing the stack by one tier. A process of cutting the left and right sides of the packaging sheet with a cutter, a process of stopping the advance and cutting the front side of the packaging sheet with a cutter, and a process of sucking the top and bottom surfaces of the cut packaging sheet and vertically cutting the packaging sheet. a step of opening the unsealed sheets, a step of pinching and extracting the unsealed sheets from the packaging sheet and placing them on a conveyance table, and a step of moving the conveyance table forward and stacking the sheets of one layer. A method for unsealing and stacking packaging sheets, comprising the steps of: after transporting the sheets to a position, blowing air to the sides of the sheets for one layer, a conveyance table is retreated, and the sheets are stacked while being unloaded from there. 2. A lift table that stacks a predetermined number of wrapped packaging sheets in multiple stages and raises each stage to a predetermined height, and a push mechanism that pushes the rear end of the top stage to advance it. , left and right side cutters that cut the left and right sides of the packaging sheet as it moves forward, a front cutter that slides along the rail to cut the front side of the packaging sheet after it stops advancing, and the top surface of the cut packaging sheet. and an upper and lower opening mechanism that adsorbs the lower surface and moves upward and downward, respectively;
An extraction mechanism that clamps one stack of unsealed sheets with clamps and extracts them from the packaging sheet, a loading table that can be raised and lowered, and a loading table on which the extracted sheets are placed onto the loading table. a conveyance table that loads sheets on the loading table by moving forward and then moving backward; an air inlet mechanism attached to the conveyance table for blowing air into the sides of the stacked sheets; An unsealing and stacking device for packaging sheets, characterized by comprising a stopper for regulating the retreat of the sheets when the conveyor table is retreating.