JP4641256B2 - Sheet take-out device and packing device - Google Patents

Description

  The present invention relates to a sheet take-out device that takes out sheets such as corrugated cardboard and cardboard one by one and a packaging device using the same.

As a packaging device, for example, a corrugated cardboard case described in Patent Document 1 described below is known.
This corrugated cardboard caser is an automatic packing device that automatically packs an object to be packed using a corrugated cardboard sheet supplied from a corrugated cardboard take-out device.
The cardboard sheet take-out device includes a magazine in which cardboard sheets are stacked, an arm that is provided below the magazine and takes out the lowest sheet of the cardboard sheets in the magazine, and the arm takes out below the magazine. And a guide for guiding the corrugated cardboard sheet. The arm is provided with a suction cup for sucking the cardboard sheet.

In this cardboard sheet take-out device, the arm is moved upward to bring the suction cup into contact with the lowermost sheet, and after the lowermost sheet is sucked by the suction cup, the lowermost sheet is moved to the magazine. Pulled down. In this way, the lowermost sheet pulled out below the magazine is received by the guide in the process of being conveyed downward by the arm, and is formed into a predetermined shape in accordance with a fold line (ruled line) previously placed.
The cardboard formed in a predetermined shape in this way is sent to the rear stage of the apparatus by a delivery device provided below the magazine, and is used for packing the packaging object.
Japanese Patent No. 3468898 (paragraphs [0012] to [0016] and FIG. 1)

However, in this cardboard take-out device, the arm and its driving device are provided below the magazine. Therefore, in order to avoid interference with the arm and its driving device, a complicated and expensive device (for example, an adsorption device) is used as the feeding device. It is necessary to use a conveyor etc.), and the price of the apparatus becomes high.
Further, when handling the cardboard, paper dust is generated from the cardboard. For this reason, in an apparatus for handling corrugated cardboard such as the corrugated cardboard sheet take-out apparatus, a pan for collecting paper dust is provided below the area where the corrugated cardboard is handled so that the paper dust does not adversely affect the apparatus. Installed.
However, in the above-described corrugated cardboard sheet take-out device, the arm and its driving device are provided below the magazine, so it is difficult to secure a space for installing a paper dust collecting pan below the magazine.

Moreover, the shape (for example, external dimension) and the position to make a crease differ depending on the shape of the packaging object. For this reason, the part which should be made to adsorb | suck to an adsorption cup changes with kinds of corrugated board sheet. In addition, the cardboard sheet may be provided with perforations and cut tape to facilitate opening after packing. Therefore, the cardboard sheet may be adsorbed depending on the presence or absence of the perforation or cut tape and its position. The site to be adsorbed on the cup is different.
For this reason, in order to handle such various types of cardboard sheets with the same cardboard sheet take-out device, it is possible to adjust the suction position of the cardboard by the suction cup (that is, the position of the arm or suction cup). preferable.
However, in the above corrugated cardboard sheet take-out device, the arm and its driving device are provided below the magazine. Therefore, in order to avoid interference with other devices installed below the magazine, the position of the arm or suction cup The adjustment range is limited.

  The present invention has been made in view of such circumstances. A sheet take-out device and a packing device that can secure a sufficient space below the magazine, have a high degree of design freedom, and have a wide adjustment range. The purpose is to provide.

In order to solve the above problems, the present invention provides the following means.
That is, the present invention is a sheet take-out device that folds a sheet provided with a crease forming ruled line along the ruled line, forms it into a shape having a bottom part and an upright part, and stacks the sheets. A magazine that is held in an open state, an arm that picks up the sheets from the magazine one by one, a guide that receives the sheet on a conveyance path of the sheet by the arm, and a sheet that is received by the guide The magazine is configured to hold only the peripheral edge of the lowermost sheet of the stacked sheets, and the arm is held in the magazine with respect to the magazine An arm main body provided adjacent to the upright portion side of the sheet, an adsorption portion provided on the arm main body for adsorbing and holding the lowermost sheet, The serial arm body, a drive unit for swinging toward the magazine side from the lower side of the set in the erected side fulcrum of the sheet held in the magazine against the magazine, opposite to the guide Provided is a sheet take-out device that includes a holding device that is provided so as to be capable of appearing and retracting at a site and presses the sheet received by the guide toward the guide .

In the sheet take-out device configured in this way, the magazine holds the lowermost sheet only at the peripheral edge, and the lower surface side of the lowermost sheet is exposed to the outside.
When taking out a sheet from the magazine, the arm body is swung from the lower side of the fulcrum toward the magazine by the driving device, and is opposed to the lower surface side of the lowermost sheet held by the magazine. Thereby, the suction part provided in the arm main body sucks the lower surface of the lowermost sheet and holds the lowermost sheet.
In this state, the arm main body is returned to the lateral position of the magazine by the driving device, whereby the lowermost sheet is pulled out from the lower portion of the magazine. Since the lowermost sheet is held by the magazine at the peripheral edge, when the sheet is pulled out from the magazine in this way, it is bent along the ruled line by the reaction force received from the magazine.

In the process of returning the arm body to the side position of the magazine, the sheet adsorbed by the adsorption part is pressed against the guide, and the reaction force from this guide causes the sheet to be further bent along the ruled line, and the bottom and upright parts It is formed in the shape which has.
Here, since the sheet received by the guide is pressed against the guide by the holding device, the sheet can be surely creased. Furthermore, since the sheet is pressed against the guide by the holding device in this manner, the sheet is prevented from being lifted from the guide, and the sheet is positioned. Therefore, the sheet is fed by the feeding device, and the sheet is moved downstream of the device. Handling can be performed satisfactorily.
Here, when the holding device is configured to press the portion in the vicinity of the ruled line of the sheet received by the guide, the sheet can be reliably creased.
After that, the arm body is returned and the reaction force received by the sheet from the guide exceeds the suction force of the suction part, or the suction by the suction part is released when the arm body is returned to a predetermined position, The folded sheet is released from the arm and delivered to the guide.
The formed sheet delivered to the guide in this way is sent to the subsequent stage of the sheet take-out device by the sending device.
Thereafter, by repeating the above procedure, the sheets in the magazine are sequentially folded along the ruled lines, formed into a predetermined shape, and then sent to the subsequent stage of the apparatus.
Thus, in this sheet take-out device, the arm body is provided on the side of the magazine, and after the sheet is pulled out from the magazine, the arm is retracted to the side of the magazine. Space is reserved.

Here, the guide has an upright portion guide that receives a portion that becomes the upright portion of the lowermost sheet conveyed to the arm, and a bottom guide that receives a portion that becomes the bottom portion of the lowermost sheet. And the said adsorption | suction part may be set as the structure which adsorb | sucks the site | part used as the said upright part of the said lowermost sheet | seat.
In this case, the length from the fulcrum of the arm main body to the swing end may be long enough to allow the suction portion to reach the portion that becomes the upright portion of the lowermost sheet. That is, the length of the arm body can be minimized.
For this reason, the trajectory of the arm body is within the transport path of the part that becomes the upright part of the lowermost sheet, or the amount of protrusion of the arm body to the transport path of the part that becomes the bottom of the lowermost sheet is minimized. In the space below the magazine, a sufficient space is secured in the vicinity of the bottom guide.

Further, the present invention has a packing device main body that packs a packing object with a sheet-like packing material, and a packing material supply device that supplies the packing material to the packing device main body, and the packing material supply device includes: Provided is a packaging device configured to supply a molded sheet-shaped packaging material to the packaging device body using the sheet take-out device according to the present invention.
In the packaging device configured as described above, a sufficient space is secured below the magazine of the sheet take-out device.

According to the sheet take-out device and the packing device configured as described above, a sufficient space can be secured below the magazine, so that interference between the arm and other members can be easily avoided.
For this reason, in this sheet take-out device and packing device, there is no restriction on the type of delivery device that can be used and the location of the paper powder collection pan, the degree of freedom in design is high, and the position adjustment range of the suction part is wide. And can handle a variety of sheets.

Embodiments of the present invention will be described below with reference to the drawings.
In this embodiment, an example in which the present invention is applied to a corrugated cardboard caser that packs an object to be packed using a corrugated cardboard sheet is shown.
As shown in FIG. 1, a corrugated cardboard caser 1 according to this embodiment is a packaging device that packs a packaging object W (a beverage container in the present embodiment) with a corrugated cardboard sheet S (hereinafter simply referred to as “sheet S”). A main body 2, a packing object supply device 3 that supplies the packing device main body 2, and a packaging material supply device 4 that supplies the sheet S to the packing device main body 2 are provided.

The packaging material supply device 4 supplies the packaging device main body 2 with a sheet S formed into a shape having a bottom portion B arranged substantially horizontally and an upright portion R standing upright from the bottom portion B.
The packing object supply device 3 aligns a large number of packing objects W, divides them into one packing unit, and sequentially supplies them to the packing device body 2.
The packaging device main body 2 places the packing object W of one packing unit supplied from the packing object supply device 3 on the bottom B of the sheet S supplied from the packing material supply device 4, and is provided on the sheet S. The bottom portion B and the upright portion R are sequentially folded along the crease forming ruled line L, and the packing object W is packed.

In the present embodiment, the packaging material supply device 4 is arranged on the side of the conveyance path of the packaging object W in the cardboard caser 1, and on the conveyance path of the packaging object W of the packaging apparatus body 2, From the other side, the sheet S is supplied in such a direction that the upright portion R is positioned downstream of the bottom portion B in the transport direction of the packing object W. Thereby, on the bottom B of the sheet S, the packing object W of one packing unit supplied from the packing object supply device 3 to the packing device body 2 is brought to the upright portion R side in a predetermined arrangement. It is placed in the state.
The packaging device body 2 adheres the bottom B and the upright portion R of the sheet S on which the packaging object W is placed in this manner along the ruled line L formed on the sheet S, thereby bonding the packaging object. The periphery of W is packed with a sheet S.

The packaging material supply device 4 has a sheet take-out device 11 that folds a sheet S provided with a crease-forming ruled line L along the ruled line L into a shape having a bottom part B and an upright part R and sends the sheet S. is doing.
As shown in FIG. 2, the sheet take-out device 11 includes a frame F. On the frame F, a magazine 12 that holds the sheets S in a stacked state, and one sheet S from the magazine 12 is stored. An arm 13 for picking up each sheet, a guide 14 for receiving the sheet S on the conveyance path of the sheet S by the arm 13, and a sending device 15 for sending the sheet S received by the guide 14 are provided.

In the present embodiment, the magazine 12 is configured to hold the stacked sheets S in an inclined state. Specifically, the magazine 12 holds each sheet S in an inclined state so that the side that becomes the upright portion R is up and the side that becomes the bottom portion B is down.
A holding claw (not shown) that holds the lowermost sheet S among the stacked sheets S is provided at the bottom of the magazine 12. The holding claws hold only the peripheral edge of the lowermost sheet S, and when the lowermost sheet S is pulled out from the bottom of the magazine 12 by the arm 13, the force of the arm 13 is the lowest. The lowermost sheet S is bent and deformed from the ruled line L, acting on the ruled line L that separates the upright part R and the bottom part B of the sheet S, and is released from the holding claws.

  The arm 13 is attached to the magazine 12 adjacent to the upright portion R side of the sheet S held in the magazine 12, and the arm 13 is provided in the arm body 21 to suck and hold the lowermost sheet S. Drive device for swinging the suction portion 22 and the arm main body 21 from the lower side of the fulcrum P set on the upright portion R side of the sheet S held by the magazine 12 toward the magazine 12 side with respect to the magazine 12 23.

The arm body 21 has such a length that the swing end can reach a portion that becomes the upright portion R of the lowermost sheet S held by the magazine 12.
The suction part 22 is provided in the vicinity of the swing end of the arm body 21. That is, when the lowermost sheet S is sucked, the suction unit 22 is configured to suck a portion that becomes the upright portion R of the lowermost sheet S.
The suction part 22 is configured by a suction pad provided with an opening at a portion facing the lowermost sheet S. An exhaust pump (not shown) is connected to the suction pad, and the suction pad is operated to depressurize the inside of the suction pad, whereby the sheet S is sucked by the suction pad.

Here, the arm body 21 can be adjusted in position in the swing axis direction (a position in a direction substantially perpendicular to the paper surface in FIG. 2, a position in the left-right direction in FIG. 3). Moreover, the adsorption | suction part 22 can adjust the position in the longitudinal direction of the arm main body 21. As shown in FIG.
In the sheet take-out device 11, by adjusting the position of the arm body 21 and the position of the suction part 22 in the arm body 21, the suction position by the suction part 22 can be changed according to the size and shape of the sheet S. It is like that. As a result, the small sheet S as shown by the solid line in FIG. 3 and the large sheet S as shown by the two-dot chain line in FIG. Can be handled.

The drive device 23 includes a swing shaft 26 that is supported by a frame F so as to be rotatable around a fulcrum P, an electric motor 27, a speed reducer 28 that decelerates rotation of the drive shaft of the electric motor 27, and a speed reducer 28. And a crank mechanism 29 that converts the rotation of the output shaft into a swing motion and transmits the swing motion to the swing shaft 26.
The arm body 21 has an upper end fixed to the swinging shaft 26, and the swinging shaft 26 is swung around the fulcrum P, so that the lower end rotates around the fulcrum P from the lower side of the fulcrum P toward the magazine 12. Can be swung.

The guide 14 has an upright portion guide 14a that receives a portion that becomes the upright portion R of the lowermost sheet S that is conveyed to the arm 13, and a bottom guide 14b that receives a portion that becomes the bottom B of the lowermost sheet S. ing.
The upright portion guide 14a is configured by a plate material that is attached to the frame F in a substantially vertical manner, and the bottom guide 14b is configured by a plate material that is attached to the frame F in a substantially horizontal manner. The bottom guide 14b is extended in a substantially horizontal direction from the lower end of the upright guide 14a toward the magazine 12, and the intersection of the upright guide 14a and the bottom guide 14b is the lowermost part conveyed to the arm 13. Among the ruled lines L of the sheet S, the sheet S is positioned on the trajectory through which the ruled lines L that divide the upright part R and the bottom part B pass.

In the present embodiment, the sheet take-out device 11 can be moved in and out of the conveyance path of the sheet S by the arm 13 at a position facing the guide 14 of the conveyance path, and the lowermost part received by the guide 14. A holding device 31 that presses the vicinity of the ruled line L of the sheet S toward the guide 14 is provided.
In the present embodiment, the holding device 31 is provided on the side of the conveyance path of the sheet S by the arm 13, and the leading end is capable of appearing and retracting at a position upstream of the guide 14 on the conveyance path of the sheet S. The boundary between the cylinder 32 and the upright portion R and the bottom portion B of the sheet S received by the guide 14 by being provided at the tip of the pneumatic cylinder 32 and projecting the tip of the pneumatic cylinder 32 on the conveyance path. the, and a pressing member 3 3 pressed against the intersection of the erected portion guide 14a and the bottom guide 14b.

As shown in FIG. 1, the feeding device 15 includes pulleys 36 provided on the upstream side and the downstream side of the feeding path of the sheet S, and a sheet wound around the pulleys 36 and received by the guide 14 on the upper surface side. It has an endless belt 37 that receives the bottom B of S, and a drive device 38 (see FIG. 3) that drives the pulley 36 to reciprocate.
As shown in FIG. 1, the endless belt 37 is provided with a pusher 37 a that presses the sheet S received by the guide 14. When the endless belt 37 is reciprocated each time the sheet S is received, the sheet S received by the guide 14 is sent out toward the downstream side of the sending path by the pusher 37a.
In the present embodiment, the two pulleys 36 and the endless belt 37 are arranged in parallel, whereby the bottom B of the sheet S is supported at two locations and is stably fed out.

Hereinafter, the operation of the sheet take-out device 11 will be described.
In the sheet take-out device 11, when taking out the sheet S from the magazine 12, the arm body 21 is swung from the lower side of the fulcrum P toward the magazine 12 by the drive device 23, and the lowermost sheet held by the magazine 12. It is made to oppose the lower surface side of S (refer FIG. 2). As a result, the suction portion 22 provided on the arm body 21 sucks the lower surface of the lowermost sheet S and holds the lowermost sheet S.
In this state, as shown in FIGS. 4 to 6, the arm body 21 is returned to the lateral position of the magazine 12 by the driving device 23, whereby the lowermost sheet S is pulled out from the lower portion of the magazine 12.
Since the lowermost sheet S is held by the holding claws of the magazine 12, the bottom B and the upright portion R are caused by the reaction force received from the holding claws of the magazine 12 when being pulled out from the magazine 12 in this way. Are folded along a ruled line L that separates. Thus, by pulling out the lowermost sheet S while being bent, the peripheral edge of the lowermost sheet S is released from the restraint by the holding claws, and is pulled out below the magazine 12.

Here, since the sheets S are in close contact with each other in the magazine 12, when the lowermost sheet S is pulled out from the magazine 12, a negative pressure is generated between the lowermost sheet S and the sheet S thereabove. . When the negative pressure is large, when the lowermost sheet S is pulled out, there is a possibility that the upper sheet S may be pulled out from the magazine 12 together.
For this reason, in this embodiment, the drive device 23 is configured to return the arm body 21 to the lateral position of the magazine 12 in a two-stage operation.

Specifically, as shown in FIG. 4, the drive device 23 is temporarily stopped after the arm body 21 is returned by a certain amount immediately after the sheet S is adsorbed, as shown in FIG. It is set as the structure which returns the arm main body 21 to the side position.
Thus, by temporarily stopping the arm main body 21, the lowermost sheet S is slightly pulled out from the magazine 12, and a gap is formed between the lowermost sheet S and the sheet S thereon. Thus, when the lowermost sheet S is pulled out, air enters between the lowermost sheet S and the sheet S thereabove, so that when the lowermost sheet S is pulled out from the magazine 12, the lowermost sheet S The negative pressure generated between the sheet S and the sheet S on the sheet S is reduced, and only the lowermost sheet S can be reliably pulled out of the magazine 12.

After the sheet S is pulled out below the magazine 12 in this way, the sheet S adsorbed by the adsorbing portion 22 is pressed against the guide 14 in the process in which the arm body 21 is returned to the lateral position of the magazine 12. By the reaction force from the guide 14, the sheet S is further bent along the ruled line L to form a shape having a bottom part B and an upright part R.
Further, when the arm body 21 is returned and the reaction force received by the sheet S from the guide 14 exceeds the suction force of the suction portion 22, or when the arm body 21 is returned to a predetermined position, the suction by the suction portion 22 is released. As a result, the folded sheet S is released from the arm 13 and delivered to the guide 14.

After the sheet S is delivered to the guide 14 in this way, the vicinity of the ruled line L that separates the upright portion R and the bottom portion B of the sheet S received by the guide 14 is pressed against the guide 14 by the holding device 31. Therefore, the sheet S is surely creased.
Further, since the sheet S is pressed against the guide 14 by the holding device 31 in this way, the sheet S is prevented from being lifted from the guide 14 and the sheet S is positioned. And the sheet S can be satisfactorily handled in the latter stage of the apparatus.

The molded sheet S delivered to the guide 14 in this way is sent by the sending device 15 to the packing device body 2 at the subsequent stage of the sheet take-out device 11 and used for packing the packing object W.
Thereafter, by repeating the above-described procedure, the sheets S in the magazine 12 are sequentially folded along the ruled lines L, formed into a predetermined shape, and then sent to the packing apparatus body 2.

In the sheet take-out device 11, as described above, the arm main body 21 is provided on the side of the magazine 12, and after the sheet S is pulled out from the magazine 12, the arm main body 21 is retracted to the side of the magazine 12. It is done.
Further, in the present embodiment, the length of the arm body 21 is minimized, and the trajectory of the arm body 21 is set within the conveyance path of the portion that becomes the upright portion R of the lowermost sheet S. .
For this reason, in this sheet take-out device 11, a sufficient space is secured in the space below the magazine 12 including the vicinity of the bottom guide 14b, and interference between the arm 13 and other members can be easily avoided. be able to.
Thereby, in this sheet take-out device 11, there is no restriction on the type of usable delivery device 15 and the location for installing the paper dust collecting pan, the degree of freedom in design is high, and the position adjustment range of the suction portion 22 is wide. And various sheets S can be handled.

It is a perspective view which shows the packing apparatus which concerns on one Embodiment of this invention. It is a front view which shows the sheet taking-out apparatus which concerns on one Embodiment of this invention. It is a side view which shows the sheet | seat extraction apparatus which concerns on one Embodiment of this invention. It is a figure which shows operation | movement of the sheet | seat extraction apparatus which concerns on one Embodiment of this invention. It is a figure which shows operation | movement of the sheet | seat extraction apparatus which concerns on one Embodiment of this invention. It is a figure which shows operation | movement of the sheet | seat extraction apparatus which concerns on one Embodiment of this invention.

Explanation of symbols

1. Corrugated cardboard caser (packing device)
2 Packing device main body 4 Packing material supply device 11 Sheet take-out device 12 Magazine 13 Arm 14 Guide 15 Delivery device 21 Arm main body 22 Suction unit 23 Drive device 14a Standing guide 14b Bottom guide 31 Holding device B Bottom L Ruled line P Support point R Standing S Cardboard sheet

Claims (3)

A sheet take-out device that folds a sheet provided with a crease forming ruled line along the ruled line into a shape having a bottom part and an upright part, and sends it out.
A magazine for holding the sheets in a stacked state;
An arm for taking out the sheets one by one from the magazine;
A guide for receiving the sheet on the conveyance path of the sheet by the arm;
A delivery device for delivering the sheet received by the guide;
The magazine is configured to hold only the peripheral edge of the lowermost sheet of the stacked sheets,
The arm, with respect to the magazine, an arm body provided adjacent to the upright portion side of the sheet held by the magazine;
An adsorbing portion provided on the arm body for adsorbing and holding the lowermost sheet;
A drive device that swings the arm body from the lower side of a fulcrum set on the upright portion side of the sheet held by the magazine toward the magazine side with respect to the magazine, and the guide. A sheet take-out device, comprising: a holding device that is provided so as to be capable of appearing and retracting in a part and presses the sheet received by the guide toward the guide . The guide has an upright portion guide that receives a portion that becomes the upright portion of the lowermost sheet conveyed to the arm, and a bottom guide that receives a portion that becomes the bottom portion of the lowermost sheet. ,
The sheet take-out apparatus according to claim 1, wherein the suction portion is configured to suck a portion that becomes the upright portion of the lowermost sheet. A packing device main body for packing an object to be packed with a sheet-like packing material;
A packaging material supply device for supplying the packaging material to the packaging device body;
A packaging device in which the packaging material supply device is configured to supply a molded sheet-shaped packaging material to the packaging device main body using the sheet take-out device according to claim 1 or 2 .

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