JPH06199319A - Device for opening carton case - Google Patents

Abstract

PURPOSE: To enable corrugated board sheets separated and parted one after another by providing a mechanism to vertically push up only the foremost sheet with nails while retaining many corrugated board sheets in vertical atti tude, sucking it to fix with a pair of front and rear suction pads and rotating a suction pad of a single side by a right angle. CONSTITUTION: Many corrugated board sheets 10 are set in a vertical attitude as mutually stuck together on the transport surface of a conveyor 20. At the tip of the conveyor 20, corrugated board sheets 10 retain the vertical attitude with a pair of right and left stoppers 59 so as not to fall forth. And a pair of right and left chains 51 linked in one direction is provided at the front center of the corrugated board sheet, and by means of a nail 50 attached to this, only the foremost sheet 10 is vertically pushed up. Furthermore, by turning one suction pad 56 of a pair of front and rear pads 54 and 56 by a right angle as sucking a board sheet 10, the corrugated board sheets 10 become certainly separable one after another.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for picking up corrugated cardboard cases which are stuck on a cylinder and folded flat from a magazine one by one and open the box. Usually, this device has a bottom portion after the box is opened. Alternatively, it is used by incorporating it into an assembling machine of a stepped ball case including a process of folding an end face flap and fixing it. In essence, the present invention relates to an apparatus for opening a corrugated cardboard sheet, which is stuck on a cylinder and folded flat, at a right angle through a ruled line portion and opens the cardboard box having a rectangular cross section.

[0002]

2. Description of the Prior Art In automatically assembling a corrugated cardboard sheet (see FIG. 5) which is stuck on a body and folded flat,
Conventionally, the following methods have been adopted. That is, see
A plurality of the above-mentioned ball balls stacked in a magazine
Drive the conveyor one by one,
The sheet is pulled out from the magazine while adsorbing the sheet to the pad through a vacuum pad attached to the front side of the sheet, and is raised at a right angle along a predetermined guide to form a rectangular cross section. It is common to get a box of.

This point will be explained more specifically with reference to the drawings. The form of a step ball sheet or a step ball case (see reference numeral 10) stacked in a stack in the magazine is as shown in FIG. As shown in FIG. 5, it is folded in two in a state of being endlessly attached to the body by a glue or stitch metal fittings, and flaps 12 are attached to the upper and lower parts of the body part 11, respectively, and the body part and the body part are joined together. A ruled line 13 for folding is engraved on the boundary between the portion and the flap. The stepped ball sheet 10 thus folded flat is shown in FIGS.
It is stored in a predetermined magazine formed on the upper surface side of the conveyor 20 as shown in FIG.

That is, the corrugated cardboard sheet 10 in the magazine in which the bundled strings are unraveled is placed in the vertical position on the conveyor 20.
The sheets 10 are stored on the transport surface of the sheet 10, and one sheet of the sheet 10 is transported to the left in the figure every one pitch by driving the push claw 22 that engages with the lower surface of the sheet 10 by the chain 21. It Since the guide plate 24 is arranged at the leading end of the conveyor, the corrugated cardboard sheet 10 does not fall forward. Further, in the figure, when the suction pad 25 provided at the front end portion of the air cylinder indicated by the reference numeral 26 sucks the leading sheet 10 of the corrugated cardboard sheet, the sheet remains sucked. The rodless air cylinder 27 is moved downward in FIG.

At this time, the sucked corrugated cardboard sheet 10
7, the left end moves along the guide plate 24 as shown by the chain line in FIG. 7, so that the double-folded body-attached sheet is changed from the parallelogram like a dotted line to the one-dot chain line through the vertical ruled line 13. It is opened to a rectangular cross section. The opened cardboard box has a suction pad 30 attached to an air cylinder 31.
Is sucked in by the rodless air cylinder 32,
It moves leftward in the figure along the guide plate 33. During this period, a series of steps is performed in which the lower flap 12 is closed to form a bottom portion, a predetermined article is then packed in the inside, and the upper flap is closed.

By the way, the above-mentioned conventional box opening device has the following problems and is desired to be improved. First, since the filling position of the products stored in the box is relatively high due to the work process, the stacking position of the corrugated ball sheet also inevitably becomes high. For this reason, setting a bundle of stepped ball sheets tightly bound in a quantity of about 10 to 20 sheets in the sheet magazine at a high position is a heavy burden because it is heavy. In particular, when stacking a large number of corrugated ball sheets in an inclined type sheet magazine, the lift load is increased and much labor is required.

Secondly, according to the conventional type mechanism, the front portion of a multi-layered ball-ball sheet is attracted through the vacuum pad while being pulled toward the front, and at that time, the sheet is stacked. Since it is configured to open in a rectangular cross section along the guide frame, if the stacked stage ball sheet is warped, air leakage will occur in the pad and adsorption will not be possible. There was also a defect. The step ball makers are also
Special consideration is given to water content management of the base paper so that warpage does not occur, but warpage often occurs due to the influence of humidity after shipping.

Further, the corrugated cardboard sheets are often joined together by the protruding glue (glue), and in this case, the vacuum sheets are joined together.
Since two sheets are pulled at the same time even when sucked by the mupad, there is a problem that the first sheet cannot be opened correctly and the second sheet is damaged. There was a problem that the damaged corrugated cardboard sheet had to be removed from the inside of the device by stopping.

A third problem is that if a large number of relatively heavy corrugated ball sheets are stacked in a sheet magazine, the weight of the entire sheet loaded on the sheet magazine also becomes large, making it difficult to drive the belt. As a result, the corrugated ball sheet could not be accurately delivered one by one, and a problem often occurred. As a result, there was the inconvenience that a large amount of sheets could not be stacked in the magazine.

Further, as a fourth problem, as the corrugated ball sheets are stacked in a larger amount in the sheet magazine, one corrugated ball sheet is pushed and moved from the sheet magazine. In many cases, the delivery timing of the sheets does not coincide with the removal timing of the vacuum pad. On the other hand, when delivering the corrugated ball sheet from the magazine through the vacuum pad, two sheets are taken out at the same time. There were troubles.

[0011]

In order to solve the above-mentioned problems, in the present invention, a conveyor is provided for conveying a large number of corrugated cardboard sheets which are cylinder-bonded and flat-folded in a vertical posture. A mechanism is provided for vertically pushing only the topmost corrugated cardboard sheet vertically with a claw while keeping the vertical posture by a stopper at the tip of the conveyor. Further, while holding the vertically pushed corrugated cardboard sheet in the vertical posture, -A suction pad is fixed by a pair of front and back suction pads provided on opposite surfaces of the card, and the suction pad on one surface is 90 ° around the edge of the corrugated cardboard sheet.
It was developed to open a box-shaped box with a rectangular cross section by rotating it.

It is to be noted that a large number of corrugated cardboard sheets that have been stuck on the body and folded flat are pushed up one by one vertically by the claws while maintaining the vertical posture, whereby the sheets are removed from the sheet magazine. You can also operate
Further, each of the folded corrugated cardboard sheets pushed upward is grasped separately from both sides (opposite sides) by the suction pads, and while holding the suction state of the suction pads, swivel one suction pad and fold it flat. It is also possible to open the corrugated cardboard sheet into a box having a rectangular cross section.

Further, according to the present invention, the pawl for pushing up one corrugated cardboard sheet can be attached to the chain which moves in one direction, while the pawl is attached to the vertically moving reciprocating device. It can also be a ratchet claw.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. 1 is a side view of the apparatus, FIG. 2 is a plan view of a sheet magazine section of the apparatus, and FIG. 3 is a plan view of a box opening mechanism of the apparatus, which is an upper side of the sheet magazine section. The box opening mechanism is arranged at.

In FIGS. 1 and 2, a large number of corrugated ball sheets 10 in which the cords are unwound are set on the conveying surface of the conveyer 20 in a vertical posture while keeping them in close contact with each other, and The lower end of the lucite sheet 10 on the back side is pushed forward by the feeding claw (kicker) 22.
That is, the corrugated cardboard sheets 10 in the magazine are conveyed to the left in the figure one pitch by one pitch via the kicker 22 driven by the chain 21, which is the same as the conventional apparatus shown in FIGS. 6 and 7. However, at the front end of the conveyor, a vertical posture is maintained by a pair of left and right stoppers 59 so that the cardboard sheet 10 does not fall forward.

A pair of left and right chains 51 interlocking in one direction are provided in the center of the front of the corrugated board sheet 10, and only one of the top corrugated board sheet 10 is vertically pushed up by the claws 50 attached thereto. Constitute. Due to such a structure, even if the overlapping ball sheets overlap each other due to the glue sticking out when sticking on the body, the sheets can be peeled off in the shearing direction. Therefore, the sheets can be reliably separated one by one, and there is no fear that the sheet is warped or bent.

That is, as the claw 50 moves from the position A to the position B in FIG. 1, the corrugated board sheet 10 passes through the gap between the guide plate 53 and the support plate 52 and ascends. Stop at. In this state, the suction pad 54 is projected forward by the action of the air cylinder 55,
The pad is pressed against one surface of the step ball sheet through the through hole 44 formed in the support plate 52. Then the pad 5
4 sucks up the sheet 10 lifted up,
Hold it. At the same time, another suction pad 5 is arranged so as to face the other surface of the sheet 10.
6 is also projected forward by the air cylinder 57 to suck the opposite surface of the sheet 10. When these suction operations are completed, the chain 51 is driven and the pawl 50 moves from position B to position C along the outer circumference of the sprocket 45.

As shown in FIG. 3, the suction pad 56 turns 90 degrees while sucking the cardboard sheet 10.
That is, the suction pad 56 is swung as shown by an arrow in the figure by the action of the rotary actuator 58 having a center of rotation just above the edge portion of the sheet. At this time, the step-ball sheet folded flat is forcibly pulled in the opening direction while its both surfaces are sucked by the suction pads 54 and 56, respectively.
0 is caused at a right angle through ruled lines 13 to form a step ball case having a rectangular cross section. As shown in FIG. 3, the stepped ball box having a rectangular cross section has a separately provided air cylinder 61.
Is transferred to the suction pad 60 attached to the cylinder. That is, the stepped ball case having the rectangular cross section as described above holds the rectangular cross section in a state where one end surface of the case is pressed against the correction plate 70 as shown by a chain line in the figure. At the same time, the suction pads 60 are sucked in this state, and at the same time, the suction pads 54 and 56 are released. After being operated in this manner, the rodless air cylinder 62 is driven to open the step box on the transfer conveyor 63.
It is operated so as to guide the case to the process of transferring the case and storing the product in the box.

The apparatus shown in FIG. 4 is another embodiment which can replace the pushing-up mechanism of the corrugated board sheet shown in FIGS. 1-2, that is, the pushing-up mechanism composed of the chain 51, the sprocket 45, the claws 50 and the like. In the figure, since the ratchet pawl 40 that vertically reciprocates by the action of the rodless air cylinder 41 can escape upward with the pin 42 as the center, when it rises, the corrugated cardboard sheet 10 at the frontmost position
One is pushed up, and when descending, it escapes to the upper side and slides down along the surface of the leading corrugated cardboard sheet without damaging it.

[0020]

As described above, according to the present invention,
After securely separating the sheets one by one from a large number of corrugated cardboard sheets that have been stuck on the body and folded flat, the sheets are opened at right angles through ruled lines and opened as a corrugated cardboard case. In particular, the sheets can be opened even when the sheets are joined to each other by the protruding glue, and even when the sheets are warped, the sheets can be opened by suction. Demonstrate usefulness in terms.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same sheet magazine portion.

FIG. 3 is a plan view showing the same box opening mechanism.

FIG. 4 is a front view showing a corrugated cardboard sheet lifting mechanism which is another embodiment.

FIG. 5 is a schematic view of a corrugated board sheet.

FIG. 6 is a front view showing a conventional device.

FIG. 7 is a plan view of the same.

[Explanation of symbols]

 10 Corrugated Cardboard Sheet 20 Conveyor 21, 51 Chain 22 Pusher 24 Guide Plate 25, 30, 54, 56, 60 Adsorption Pad 26, 31, 55, 57, 61 Air Cylinder 40 Ratchet Claw 50 Claw 27, 32, 41, 62 Rod Less air cylinder 70, straightening plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 591210301 SSA Packaging Engineering and Consulting PTW Limited S. S. A. PACKAGING EN GINEERING & CONSULT ANT PTY. LIMITED Australia 2230 New South Wales Wool-wear Church Treat 3 (72) Inventor Seiichi Ako 2230 New South Wales Wool-wear Church Street 3 (72) Invention Kazuki Fujio 1812-2 Oshima-cho, Nishisonogi-gun, Nagasaki Prefecture

Claims (3)

[Claims] 1. A corrugated sheet is vertically attached to a front end portion of a conveyor for conveying a large number of corrugated cardboard sheets which are stuck on a body and folded flat by a claw while maintaining the vertical posture. It is equipped with a push-up mechanism that pushes it up to remove it from the sheet magazine.Furthermore, a single folded corrugated cardboard sheet that has been pushed up is gripped from both sides (opposite sides) by suction pads separately, and the suction state of the suction pad is maintained. An opening device for a corrugated cardboard case, wherein one of the suction pads is swung to open a corrugated cardboard sheet flatly folded into a box shape having a rectangular cross section. 2. A claw for pushing up one corrugated cardboard sheet,
The cardboard case opening device according to claim 1, which is attached to a chain that moves in one direction. 3. A claw for pushing up one corrugated cardboard sheet,
A corrugated box opening device according to claim 1, wherein the ratchet pawl is attached to a vertically moving reciprocating device.