JPH0633148B2 - Lifting and transporting device for packaging sheet in opening device for packaging sheet - Google Patents

Description

Description: (Industrial field of application) The present invention relates to an unsealing device for automatically unsealing a sheet from a wrapping sheet, which is used in a printing machine or the like, and sends the wrapping sheet to an unsealing processing position. The present invention relates to a hoisting and conveying device for.

(Prior Art) Japanese Patent Laid-Open No. 63-20 as a conveying device for this type of packaging sheet.
In Japanese Patent No. 8450, while pushing the rear end of the uppermost packaging sheet of the packaging sheets stacked in multiple stages by the pusher, the uppermost packaging sheet and one step below the air nozzle that follows the pushing body. An apparatus is disclosed in which air is sprayed between a packaging sheet and the packaging sheet at the uppermost stage to separate it and send it to the opening processing position.

(Problems to be Solved by the Invention) However, in the prior art disclosed in the above publication, if the air jetting force from the air nozzle is not strong due to the size of the packaging sheet, the paper quality, etc. The separation from the sheet cannot be reliably performed, and the uppermost packaging sheet cannot be smoothly sent out by the pusher. In addition, the packaging sheets loaded on the packaging sheet loading unit may be loaded with glue applied to the central portion of each packaging sheet in order to prevent collapse of the packaging sheets. In such a case, even if air is sprayed between the packaging sheets, they cannot be separated and conveyed.

Therefore, the present invention has been made in view of the above-mentioned drawbacks of the prior art and solves this problem. The uppermost packaging sheet is reliably separated from the next packaging sheet, and the packaging sheet is smoothly sent to the unsealing processing position. An object of the present invention is to obtain a hoisting / conveying device capable of improving separation between sheets in a sheet.

(Means for Solving the Problem) As a means for solving this, the present invention provides a transfer path leading to the unsealing processing unit above the packaging sheet stacking unit, and movably mounts the carrier thereon. A bar support is attached to an upper frame provided on the carrier so as to be able to move up and down, and a bar for holding a paper is attached to the bar support, which is movable from the front and back sides of the carrier to the center of the packaging sheet. , A suction cup mounting body with a suction cup attached to the lower end of the uppermost packaging sheet of the packaging sheet stacking section to adsorb and hold the suction side edge portions on both sides of the front side of the packaging sheet is attached so that it can be raised and lowered. A holding bar is used to hold the packaging sheet from below and convey the packaging sheet.

(Embodiment) An embodiment showing the configuration of the present invention in the drawings will be described in detail below.

1 and 2 are provided with a packaging sheet hoisting and conveying apparatus A of the present invention and a packaging sheet stacking section B, a transfer section C, an opening processing section D, a discharging section E, and a sheet storage section F related thereto. 1 is a packaging sheet, and 2 is a sheet.

In this embodiment, the transport direction of the packaging sheet 1 is referred to as the front, the opposite direction is referred to as the rear, the front side in the width direction is referred to as the front side, and the opposite side is referred to as the back side.

As shown in FIG. 1, in the packaging sheet stacking section B, a lift table 5 is arranged in a machine frame 4, and the lift table 5 has four corners suspended by chains 6, and a packaging sheet of the sheet 2 that is wrapped. 1 is placed on a pallet in multiple stages and is placed on the lift table 5 by a fork lift or the like, and the packaging sheet 1 is moved up and down in a horizontal state.
At this time, the glue 3 is applied to the central portion of each of the stacked packaging sheets 1 as shown in FIGS. 8 to 11 to prevent the collapse of the packaging sheets 1.

As shown in FIGS. 3 to 7, the packaging sheet hoisting and conveying apparatus A according to the present invention has both machine frames 4a on the rear and front sides of the machine frame 4.
A carrier 7 is bridged in between, and the carrier 7 is formed in a three-layer structure including an upper frame 8, a bar support 11 and a suction cup mount 16.

The upper frame 8 is framed by a horizontal frame 8a on the back and front, a vertical frame 8b in the front and rear directions, and a central frame 8c, and a connecting plate 8d is stretched over the central frame 8c. Both horizontal frames 8a are rails 9 laid on the machine frame 4a.
Is slidably fitted to the machine, and a moving air cylinder 10 is connected between the machine frame 4a and the horizontal frame 8a on one side, and the carrier 7 reciprocates between the packaging sheet stacking section B and the transfer section C. It is mounted so that it can be moved.

The bar support 11 includes a horizontal frame 11a and a vertical frame 11b.
And a central frame 11c, and a connecting plate 11d is stretched on the central frame 11c.
A rodless cylinder 12 is attached between 1d and both lateral frames 11a, and each rodless cylinder 12 is formed into a rectangular frame having a paper holding bar 13a at its lower end as shown in FIG. While suspending the bar frame bodies 13, the bar frame bodies 13 are slidably fitted to the rails 14 on the lower surface of the vertical frame 11b, and the bar frame bodies 13 are moved from the end portions to the central portions by the respective rodless cylinders 12. The air cylinders 15 for raising and lowering mounted on the upper frame 8 are connected to the bar support 11 so as to be reciprocally movable so that they approach each other at the same time or separate from each end at the same time. The packaging sheet 1 to which the bar support 11 is attached so as to be able to move up and down is configured to be held and lifted by a paper holding bar 13a.

The suction cup mounting body 16 is erected on a base 17, is mounted below the bar support body 11 by a guide rod 18 penetrating the upper frame body 8 and the bar support body 11, and is a lifting air cylinder mounted on the bar support body 11. 19 is connected to the suction cup mounting body 16, and the suction cup mounting body 16 is mounted so as to be able to move up and down. Further, the suction cup mounting body 16 is, as shown in FIG.
A first guide rail 20a whose base end is pivotally attached to the base 17 is projectingly provided in a V shape so as to be openable and closable, and second guide rails 20b are projectingly provided on the left and right of the base 17. The first and second guide rails 20a and 20b are slidably supported by suction cup supports 22a and 22b each having a suction cup 21 for adsorbing the packaging sheet 1, and the tip of the first guide rail 20a. Chain wheels 23 and 24 are pivotally attached to the base ends, respectively, and a chain belt 25 is hung on the chain wheels 23 and 24, and a suction cup support 22a is connected to the chain belt 25. In addition, the chain wheels 2 each of which is pivotally attached to the base end of the guide rail 20a.
Gears 27 are attached to the three pivots 26 so as to mesh with each other, and a pinion 28 is attached to one of the pivots 26, and the pinion 28 is engaged with both racks 29 and 29 slidably attached to the base 17. The racks 29, 29 are connected to the suction cup support 22b. By moving the handle 30 in accordance with the size of the packaging sheet 1, the other suction cup support 22a is moved through the chain belt 25 and the gear 27 that are integral with the suction cup support 21a, and the pinion 28 is rotated. Both sliding racks 29
Since the suction cup supports 22b are moved by the suction cup supports 22a and 22b, the suction cup supports 22a and 22b are simultaneously moved so as to expand outward or contract inward, and the suction cups 21 adsorb the four corners of the packaging sheet 1 to wrap them. It is configured to lift the seat 1 upward.

The transfer section C includes a side guide operation mechanism 41 that arranges the packaging sheet 1 conveyed to the flat transfer table 40 from both sides according to its size, and a paper pressing body 42 that pushes the packaging sheet 1 to the opening processing section D. Have.

The opening processing unit D includes a side cutter mechanism 43 that cuts out both sides of the transferred packaging sheet 1, a front cutter mechanism 44 that cuts out the leading end, an upper opening mechanism 45 that vertically opens the opened packaging sheet, and a lower opening. Mechanism 46
Is equipped with.

The sheet storage unit F includes a sheet extracting mechanism 47 for extracting the sheet 2 from the opened packaging sheet 1, a bottom plate 49 on a lift table 48 for stacking the sheet, and the stacked sheet. Paper 2
A paper aligning mechanism 50 for adjusting the paper is provided.

The discharge part E lifts a discharge hole 51 formed on one side behind the opening processing part D and an empty packaging sheet opened in the opening processing part D, and conveys the empty packaging sheet 1 to the discharge hole 51. The packaging sheet lifting / moving mechanism 52 is provided.

In addition, G is a bulk sheet feeding mechanism unit, and the bulk sheets 2 stacked on the lift table 5 of the packaging sheet stacking unit B.
In order to deliver a desired amount of paper, a paper extruding body 53 having a paper peeling piece 54 is provided.

Further, 55 is an air ejection hole, which ejects powerful air and is blown between the drawn sheets 2 to promote the separation of each sheet 2.

With this configuration, when the packaging sheet 1 is hoisted and conveyed, the packaging sheet 1 is lifted in the packaging sheet stacking section B by a fork lift or the like while the packaging sheets 1 of the sheets 2 packaged on the pallet are stacked in multiple stages. It is placed on the table 5 and the chain 6 lifts the packaging sheet 1 on the lift table 5 to the lower surface of the carrier 7 as shown in FIG. Then, the air cylinder 15 for raising and lowering the carrier 7 is extended to lower the bar support 11 and the suction cup mount 16 as shown in FIG. By the way, the suction cups 21 attached to the suction cup attachment body 16 are set in advance so as to be adsorbed in the vicinity of the four corners of the packaging sheet 1 according to the size of the packaging sheet 1. To set this, after releasing the fixation of the pivot shaft 26 with the lock handle 31, when moving the handle 30 along the first guide rail 20a, the suction cup support 22a
The chain belt 25 that is integral with and rotates the gear 27, and the other gear 27 that meshes with this rotates so that the other suction cup support 22a moves along the first guide rail 20a via the chain belt 25. As you move, the pinion 28
Also rotates to slide both racks 29 and move the suction cup support 22b along the second guide rail 20b. As a result, these suction cup supports 22a and 22b can be simultaneously expanded outward or contracted inward so that the suction cups 21 can be aligned with the four corners of the packaging sheet 1. 26 is set by fixing the rotation of 26 to prevent movement of the suction cup supports 22a and 22b. Then, the elevating air cylinder 19 is extended to further lower the suction cup mounting body 16 as shown by the broken line in FIG. 9, and the suction cups 21 are located near the four corners of the packaging sheet 1, that is, near the front and rear edges of the packaging sheet 1. The packaging sheet 1 is adsorbed with air by pressing it against the portion. After that, the lifting air cylinder 19 is contracted to operate to sucker mount 1
When 6 is raised, the central portion of the packaging sheet 1 hangs down by its own weight, and both the front side and the back side are bent upward as shown in FIG. At that time, packaging sheet 1
The sheets 2 in the inside are in close contact with each other by the pressure contact of the packaging sheets 1 stacked up to that time, but the suction and suspension operation by the suction cups 21 causes the front and back sides of each sheet 2 in the packaging sheet 1 to move. The air flowing between the inside and outside of the packaging sheet 1 to bend upward flows between the sheets 2 and causes a deviation in the bending direction from each other, so that the sheets 2 in a close contact state are easily loosened. Therefore, the rodless cylinder 12 of the bar support 11 is operated to simultaneously move the bar frame 13 from both sides toward the central portion as shown by the broken line in FIG. 10, and the paper holding bar 13a at the lower end is moved. Since it is inserted near the center of the lower surface of the packaging sheet 1 that is curved and lifted upward, the glue 3 that is stuck between the packaging sheet 1 and the next packaging sheet 1 that is superposed and stacked surely It is peeled off (see FIG. 11). Then, the packaging sheet 1 is lifted by the suction cup 21 and the paper holding bar 13a as shown in FIG. 11, and the carrier 7 is smoothly transported to the transfer section C by the extension operation of the moving air cylinder 10. You can The paper holding bar 13a is taken out from the wrapping sheet 1 hung up here, and then the suction cup mounting body 16 is lowered and the wrapping sheet 1 is laid down and placed on the transfer table 40, and then the suction cup 21 is packaged. Separate from sheet 1. As a result, the sheets 2 in the packaging sheet 1 that are curved by the suction cups 21 are again displaced from each other in an attempt to return to a flat state, and the peeling action is further promoted. By such a series of operations, the sheets 2 in the packaging sheet 1 which are in close contact with each other due to stacking are loosened in a more easily peelable state. The packaging sheet 1 transported to the flat transporting table 40 of the transporting section C is arranged by the side guide operating mechanism 41 from both sides according to its size and is transported to the unsealing processing section D by the paper pressing body 42, and the unsealing is performed. The packaging sheet 1 transferred to the processing unit D has side cutter mechanisms 43 on both sides and a front cutter mechanism 4 on the front end.
4, the upper opening mechanism 45 and the lower opening mechanism 46 open and close the opened packaging sheet 1 up and down, and the sheet 2 in the packaging sheet 1 is removed by the sheet extraction mechanism 4
It is pulled out at 8, and sent to the sheet storage unit F to be stacked. On the other hand, the opened empty wrapping sheet 1 is lifted by the wrapping sheet lifting / moving mechanism 52 and discharged from the discharge hole 51 formed on one side behind the unsealing processing section D.

It should be noted that the apparatus of the present invention may be incorporated into a part of a conventional apparatus of this type instead of the apparatus for unwrapping the packaged sheet of the above embodiment.

(Effects of the Invention) As described above in detail with reference to the embodiments, according to the present invention, the packaging sheets stacked in multiple stages are suction-suspended by the upward movement of the paper-holding bar and the suction cup of the conveyor. Even if glue is applied between the stacked packaging sheets to prevent collapse of the load, the packaging sheets can be separated and transported without fail. In addition, the wrapping sheet to be conveyed has its front and back edges close to the edges sucked and sucked by the suction cups of the carrier, and then the lifting operation of the central part causes each sheet in the wrapping sheet to bend upward on both front and back sides. , By a series of actions that are returned to the flat state again,
It has an excellent effect that each sheet in the packaging sheets that were in close contact with each other due to stacking is loosened in a state where they are easily peeled off, and that after the packaging sheets are conveyed, the post-handling treatment can be made good at the same time. It is a thing.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of the entire apparatus embodying the present invention, FIG. 2 is a cross-sectional plan view of the same, FIG. 3 is a plan view in which a part of a carrier is cut away, and FIG. FIG. 5 is a front view in which a part of the carrier is partially cut away, FIG. 6 is a plan view of a suction cup mounting body of the transport body, and FIG. 7 is a side view of a main part of the suction cup mounting body. FIG. 8 to FIG. 11 are schematic explanatory views showing a state in which the carrier holds the packaging sheet by suction. A: Packaging sheet lifting / conveying device B: Packaging sheet stacking unit 1 ... Packaging sheet 2 ... Sheet 3 ... Adhesive 7 ... Conveyor 8 ... Upper frame 11 ... Bar support 13 ... Bar frame 13a …… Paper holding bar 16 …… Sucker mount 21 …… Sucker

Claims (1)

[Claims] 1. A transfer path leading to an opening processing section is provided above a packaging sheet stacking section, a carrier is movably mounted on the transfer path, and a bar support is lifted up and down on an upper frame provided on the carrier. A paper holding bar that can be attached to the bar support and is movable from the front and back sides of the carrier to the center of the packaging sheet, and both front and back sides of the packaging sheet at the top of the packaging sheet stacking section. A suction cup mounting body with a suction cup attached to the lower end to adsorb and hold the suctioned edge is attached so that it can be moved up and down, and the packaging sheet lifted by the suction cup is held from below by the paper holding bar and the packaging sheet is conveyed. A wrapping sheet lifting and conveying device in a wrapping sheet opening device, which is characterized in that: