JPH08318901A - Stacking and boxing equipment - Google Patents

Abstract

PURPOSE: To secure the volumetric ratio by turning transverse rod parts of a holding means to a wide part projected from the bottom surface of a lowest article and a narrow part off the bottom surface so as to make the external dimension of the article approximately equal to the inner dimension of a box. CONSTITUTION: A holding means 1 is elevated, transverse rod parts 1b, 1b are engaged with a bottom surface A2 of a lowest article A', and articles A are held in the stacked condition and lifted to the upper part of a carrying passage. The articles A transferred immediately above a box by a transferring means 3 are lowered into an empty box B to be boxed together with the holding means 1. After the holding means 1 is lowered, a driving means 2 is started to turn longitudinal rod parts 1a, 1a by the prescribed angle, and the transverse rod parts 1b, 1b are removed from the bottom surface A2 of the lowest article A' thereby, and the width of the transverse rod part 1b becomes approximately equal to that of the longitudinal rod part 1a. Only the longitudinal rod part 1a and the transverse rod part 1b are pulled out upward through the clearances S, S between each side of the boxed article A and the inner side of the box B to complete the boxing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for stacking and packing articles, such as box-shaped packages, and more specifically, holding articles stacked in a plurality of steps and packing them in a stacked state. The present invention relates to a stacking box packing device.

[0002]

2. Description of the Related Art Conventionally, as a stacking box packaging device of this kind, as disclosed in, for example, Japanese Utility Model Laid-Open No. 60-84501, it faces an outer peripheral side surface of an article aligned for one stack,
A pair of gripping members formed in a plane L shape are arranged so as to be reciprocally movable toward and away from each other, and the gripping members are gripped by pressing them so as to surround the outer peripheral side surface of the article arranged in one step. After that, move both gripping bodies and articles above the opened box, and then lower them into the box to pack the articles in the aligned state, and then grasp both gripped objects from the boxed aligned article. Separate the bodies and use the gap between the outer peripheral side of these boxed articles and the inner side of the box to pull out both gripping bodies from the inside of the box, and by repeating these operations, the aligned articles in the box There is something to be stacked.

Further, as disclosed in Japanese Utility Model Laid-Open No. 80505/1990, a corresponding number of vacuum suction plates are arranged above articles arranged in a single stage, and the vacuum suction plates are arranged in a single stage. After sucking and gripping the upper surface of the
After moving these vacuum suction cups and articles above the opened box, they are lowered into the box to pack the articles in the aligned state, and then the vacuum suction board is separated from the boxed aligned articles. In some cases, the articles in the aligned state are stacked in the box by pulling out from the inside of the box and repeating these operations.

[0004]

However, in such a conventional stacking box packing device, since the articles can be packed in only one step in one packing operation, it is necessary to set the number of steps in order to complete the packing of a predetermined number of steps. It is necessary to repeat the boxing operation the same number of times, which takes time, and there is a problem that high speed operation cannot be performed.

Further, when the gripping body is brought into contact with the outer peripheral side surface of the article for gripping, a pair of plane L-shaped gripping bodies can pass between the outer peripheral side surface of the boxed article and the inner side surface of the box. Since it is necessary to form a gap, it is necessary to make the inner dimension of the box larger than the outer dimension of the article to be packed in advance by the amount of these gaps, which causes a problem that the volume ratio of the boxed article decreases.

In view of the above conventional circumstances, the present invention aims at packaging in a stacked state with a simple structure, and the outer side of the article to be packaged while gripping by holding the gripping means against the outer peripheral side surface of the article. Another purpose is to bring the dimensions and the inner dimensions of the box as close as possible.

[0007]

The technical means taken by the present invention to solve the above-mentioned problems are vertical bar portions extending vertically along opposite side surfaces of stacked articles, and these vertical bars. A plurality of sets of gripping means, each of which is composed of a horizontal bar portion projecting from the lower end of the part in a substantially horizontal direction, are provided vertically, and at the upper end of these gripping means, a horizontal position where the horizontal bar part projects along the bottom surface of the lowermost article and , A driving means for rotating the vertical bar portion so as to move over a narrow position where the vertical bar portion is separated from the bottom surface and has substantially the same width dimension as the vertical bar portion, and the gripping means and the driving means are provided in a box. It is characterized in that a transfer means for reciprocating at least in the vertical direction is continuously provided inside and outside of the container.

Further, it is preferable that the gripping means is a substantially L-shaped bar member in which a lower end portion of each vertical bar portion is bent to integrally form a horizontal bar portion.

[0009]

According to the above technical means, the vertical bar portions of the gripping means are extended in the vertical direction along the opposite side surfaces of the stacked articles so as to engage with each other. The vertical bar is sandwiched and held immovably in the width direction, and the horizontal bar projects and engages along the bottom surface of the article at the bottom of the stack so that it can be lifted and lowered in a stacked state. By moving the gripping means 1 down to the inside of the box by the transfer means as it is, the articles stacked with the vertical bar portion and the horizontal bar portion of the gripping means are packed into a box, and then the vertical bar portion is rotated by the driving means to rotate the horizontal bar portion. By moving the part from the wide position to the narrow position, the horizontal bar part deviates from the bottom surface of the article at the bottom and becomes approximately the same as the width dimension of the vertical bar part. The vertical bar and Only rod portion is intended to be drawn upwardly through the gap between the side surfaces and the inner surface of the box facing the packing the article.

Further, the lower end portion of the vertical rod portion is bent to form the horizontal rod portion integrally with the rod member, which is substantially L-shaped.
The vertical rod portion and the horizontal rod portion can be pulled out with a gap of about the diameter of the rod between the outer peripheral side surface of the boxed article and the inner side surface of the box.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 2, for example, box-shaped articles A supplied from a previous process such as a packaging machine are sequentially carried into a stacking mechanism 12 by a horizontal carry-in conveyor 11 and piled up in a predetermined number of stacks, The stacked articles A ... Are pushed by the pusher 13 onto the conveying path 14 on which the gripping means 1 ... Stand by, and as shown in FIG. 1 (a), both side surfaces A1 of the articles A. , A1 are opposed to the waiting vertical bar portions 1a, and the bottom surface A2 of the article A'located at the bottom is opposed to the horizontal bar portions 1b, and further, as shown in FIGS. At the same height as the road 14,
An empty box B whose upper surface is held open is placed and a carry-out path 15 is provided horizontally in parallel with the carrying path 14 for sequentially supplying the box.

In the case of this embodiment, the stacking mechanism 12 is arranged in the middle of the carry-in conveyor 11 to convey the articles A to the downstream side.
Carry-in control section 12a for controlling the carry-in of the paper and the carry-in conveyor 1
1. The carry-in conveyor 1 is arranged so as to be continuous to the downstream side of 1.
It is composed of an elevator 12b that stacks the articles A supplied from No. 1 upward. The carry-in control unit 12a faces the one or both side surfaces A1 and A1 in the left-right width direction of the article A carried in by the carry-in conveyor 11 as shown by the dashed line in FIGS. A holding piece for sandwiching the article A in the left-right width direction is arranged so as to be retractable, and is electrically connected to an elevator 12b described later, and a carry-in stop signal is input from these, so that the article A being carried in in the left-right width direction. The sandwiching piece is projected onto the carry-in conveyor 11 so as to be sandwiched and held immovable regardless of the operating state of the carry-in conveyor 11, and the sandwiching of the article A is released by inputting a release signal in this state.

The elevator 12b includes the carry-in conveyor 11
A placement surface 12c on which the article A carried in from above is placed, and a fixed stopper 12d for positioning for stopping the front surface A3 of the article A carried in from the carry-in conveyor 11 at a predetermined position on the placement surface 12c. For example, a drive of an air cylinder or the like for raising and lowering the mounting surface 12c from an upper limit position which is substantially the same as the carry-in conveyor 11b or slightly lower than it to a lower limit position which is substantially the same height as the transport path 14 described later or slightly higher than it. Part 12e, which is in electrical communication with the carry-in control part 12a, a detection part 12f, which will be described later, a detection part 12g and a pusher 13, and the mounting surface 1 in the initial state.
2c is made to stand by at the upper limit position, the mounting surface 12c is sequentially lowered based on the detection unit 12f, the mounting surface 12c is lowered to the lower limit position based on the detection unit 12g, and the pushing surface 13a of the pusher 13 moves forward. At the same time as it is raised at the upper limit position after finishing or retreating, the carry-in control unit 1
A release signal is output to 2a. The detection unit 12f is composed of, for example, an optical sensor, and is fixedly arranged toward the uppermost article A positioned on the mounting surface 12c from the carry-in conveyor 11b and positioned by the fixed stopper 12d. After it is detected and the transfer is completed,
The drive part 12e is operated to lower the placement surface 12c, and the lowering makes the uppermost article A undetectable, and the upper surface A4 of the uppermost article A is substantially the same height as the carry-in conveyor 11b or slightly higher. When it comes to the lower position, the drive unit 1
The operation of 2e is stopped to stop the lowering of the mounting surface 12c. The detection unit 12g is fixedly arranged toward the placement surface 12c on which a predetermined number of articles A ... Are stacked, and the placement surface 12c
In the case of the illustrated example, when the six articles A are lowered to the position where they are stacked, by detecting this, a carry-in stop signal is output to the carry-in control unit 12a, and at the same time the drive unit 12e is operated. And lowers the mounting surface 12c to the lower limit position.

The pusher 13 is a pushing surface 13 facing the rear surface A5 of the stacked articles A ...
a and a reciprocating movement in the front-rear horizontal direction to a front position that does not interfere with the rising of the mounting surface 12c by passing over the mounting surface 12c that has descended from the rear position that does not interfere with the lowering of the mounting surface 12c to the lower limit position. Drive unit 13b such as an air cylinder
And is electrically connected to the elevator 12b and the transfer means 3 described later, and in the initial state, the pushing surface 13a is made to stand by at the rear position, and when the placing surface 12c has finished descending to the lower limit position, the driving portion 13b is formed. Actuates the pushing surface 13a
Is advanced to a forward position on the transport path 14 or near the upstream end of the transport path 14, and subsequently, before or after the mounting surface 12c is raised, the pushing surface 13a is retracted and returned to the rear position.

The conveying path 14 faces and abuts only the widthwise central portion of the bottom surface A2 of the article A'located at the bottom of the stacked articles A ... Pushed from the mounting surface 12c by the pusher 13. It is a horizontal passage, and at its upstream end in the pushing direction, the left and right side surfaces A1 of the stacked articles A ...
, A1 ... and a pair of side guides 14a, 14a that abut on and face each other in the left-right width direction are erected so as to be adjustable in the left-right width direction. At the downstream end of the conveying path 14, the abutting portion 1 for positioning in the feeding direction is opposed to the front surface A3 ... of the articles A ...
4b is erected so as to be adjustable and movable in the pushing direction, and outputs an article detection signal to the driving means 2 described later when the front surface A3 of the article A at the downstream end hits the abutting portion 14b, for example, an optical sensor or the like. The movement control detector 14c is provided. Between these side guides 14a, 14a and the abutting portion 14b and the movement control detecting portion 14c, the left and right side surfaces A of the article A that has abutted against the abutting portion 14b.
1 ..., A1 ... and the bottom surface A2 of the article A'located at the bottom
A plurality of sets of gripping means 1 are hung vertically in the pushing direction so as to face. In the case of the present embodiment, as shown in FIG. 2, the front-rear dimension from the upstream end of the transport path 14 to the abutting portion 14b is 3 when the stacked articles A are brought into contact with each other in the front-rear direction. When the pusher 13 finishes pushing the third row of articles A ..., the two rows of articles A .. However, when the pushing stroke of the pusher 13 is lengthened to finish pushing the second row of articles A ..., The downstream two rows of articles A. 1. Items A in a stacked state at the end of the boxing work so as to face No. 1 ...
May not be left on the transport path 14.

The gripping means 1 is provided on both left and right side surfaces A1 and A1 arranged side by side so as to be adjustable and movable in the left and right width direction at an interval substantially the same as the left and right width dimension of the articles A ... Vertical bar portions 1a, 1a extending vertically along
And horizontal bar portions 1b and 1b protruding from the lower ends of these vertical bar portions 1a and 1a in a substantially horizontal direction for a predetermined length. In the initial state, the inner ends of the vertical bar portions 1a and 1a are the side guides 14 described above.
The left and right inner surfaces of a and 14a and the pusher 13 are flush with each other in the same plane, and the upper ends of the horizontal rod portions 1b and 1b are made to stand by at a standby position P3 slightly lower than the transport path 14. In the case of the present embodiment, as shown in FIGS. 2 and 3, the vertical bar portion 1 is attached to the left and right side surfaces A1 and A1 of the article A in one row.
a, 1a ... Adjustable in the front-back direction, 2 sets each, 4 sets in total,
A total of eight pieces are arranged facing the two rows of articles A ..., A ... on the downstream side hitting the abutting portion 14b, and the lower end portion of each vertical rod portion 1a is bent substantially at a right angle. 1b
Are integrally formed by a substantially L-shaped bar.

At the upper ends of these gripping means 1 ...
The wide position P1 in which the b ..., 1b ... protrude toward the transport path 14 along the bottom surface A2 of the lowermost article A ′ and is wide in the left-right width direction.
, 1a ... so as to move away from the bottom surface A2 and to move across the narrow bar position P2 which has substantially the same width dimension in the left-right width direction as the vertical bar parts 1a. A drive means 2 for rotating the plane about 90 degrees in the horizontal direction is continuously provided, and in its initial state, the horizontal bar portion 1b is shown as shown by the solid line in FIG.
, 1b are made to stand by at the wide position P1 and immediately after the gripping means 1 has been lowered to the inside of the box B by the transfer means 3 which will be described later, as shown by the chain double-dashed line in FIG. 1 (b) and FIG. , 1a ... are respectively rotated about 90 degrees in the plane to move the horizontal bars 1b ..., 1b ... From the wide position P1 to the narrow position P2, and the transfer means 3 moves the horizontal bars 1b. , Are pulled out from the inside of the box B until the gripping means 1 is returned to the standby position P3 and the pushing of the pusher 13 is started. , 1b ... are returned to the wide position P1 from the narrow position P2 by rotating them in the opposite directions. More preferably,
The horizontal bar portions 1b ..., 1b ... are moved from the wide position P1 to the narrow position P2.
As shown in FIG. 3, the front and rear horizontal bars 1b and 1b facing the bottom surface A2 of the articles A ... The articles A ... Are prevented from being displaced in the front-rear direction due to the rotational movement of the horizontal bar portions 1b, 1b. In the case of the present embodiment, as shown in FIGS. 1 and 2, a total of eight vertical bar portions 1a ..., 1a ... Each have a drive unit 2a for rotation such as a rotary cylinder operated by air. All the horizontal rod portions 1b ..., 1b ... Are moved simultaneously by operating the rotating cylinders 2a .... collectively, and the gripping means 1 ... 1b ..., 1b ... between the narrow positions P2, until the next stacked articles A ... Are started to be pushed by the pusher 13.
To the wide position P1.

In the drive means 2 and the gripping means 1, ..., the gripping means 1 ...
A transfer means 3 for reciprocating at least in the vertical direction is continuously provided toward the inside of the box B whose upper surface is held open. The transfer means 3 includes a drive unit 13b of the pusher 13, a movement control detection unit 14c of the transport path 14, and a box detection unit 1 described later.
5a is electrically connected to the drive control unit 13 of the pusher 13 by inputting both the article detection signal from the movement control detection unit 14c and the box presence signal from the box detection unit 15a.
At the same time that the pushing stop signal is output to b, the gripping means 1 ...
Is lowered at least to move from the standby position P3 to the boxing position P6 in the box B, and the narrow position P by the driving means 2 described above.
Immediately after the movement to 2, the gripping means 1 is at least raised to pull out from the boxing position P6 in the box B and return to the standby position P3, and at a predetermined timing on the way from the boxing position P6 to the standby position P3, the pusher 13 is returned. By outputting a push-out cancellation signal to the drive unit 13b, the gripping means 1 ... Is returned to the standby position P3 before the pusher 13 starts pushing the next stacked articles A. Alternatively, when it returns to the standby position P3, a pushing release signal is output to the drive portion 13b of the pusher 13 almost at the same time. In the case of the present embodiment, as shown in FIGS. 1 and 2, the lifting drive unit 3a such as an air cylinder for vertically moving the gripping means 1, ...
And a lateral transfer drive unit 3b such as an air cylinder that reciprocates in the horizontal direction.
By inputting both the article detection signal from 4c and the empty box carry-in end signal from the empty box detection section 15a, the elevating drive section 3a is actuated to move from the standby position P3 to the horizontal bar sections 1b ..., 1b.
The lower end of ... is higher than the upper end of the box B, and is located above the transport path 14 at a position P.
4, and then the horizontal transfer drive unit 3b is operated to horizontally move from the upper position P4 of the transport path 14 to a position P5 directly above the empty box B on the carry-out path 15 and further move the vertical drive unit 3a. By operating again, the lower ends of the horizontal bar portions 1b ..., 1b ... are lowered from the position P5 directly above the box to the boxing position P6 which is at substantially the same height as the inner bottom surface B1 of the empty box B, and thereafter the above operation is reversed. From the boxing position P6 to the position P directly above the box
5, the standby position P3 via the position P4 above the transport path 14
I am returning to.

The carry-out path 15 is a horizontal passage which is opposed to and abuts the bottom surface of the box B formed by the width dimension of the vertical bar portions 1a, 1a, ...
A box detector 15a such as an optical sensor for outputting a box presence signal to the transfer means 3 when the box B is present at the boxing position P6 is disposed along the way, and the transfer means 15 is further provided in the carry-out path 15. After pulling out the gripping means 1 ... from the boxing position P6 by means of 3, the empty box B is carried in from the upstream side of the carry-out path 15 to the boxing position P6, and at the same time the box B that has completed the boxing is moved from the boxing position P6 to the downstream side. The box supply means 16 for carrying out is provided.

In the case of this embodiment, the box supplying means 16 is shown in FIG.
As shown in FIG. 4, a main body 16a supported so as to reciprocate in the front-rear direction along the carry-out path 15, and an empty box B supplied to the upstream side of the carry-out path 15 projecting from the rear end of the main body 16a. A first pushing portion 16b facing the first pushing portion 16b of the main body 16a, and a second pushing portion 16c facing the box B standing by at the boxing position P6 pivotally attached to the front of the first pushing portion 16b in the vertical direction. , A pair of left and right engaging portions 16d, 16d which are provided on the second pushing portion 16c and project downward in a side-face inverted triangular shape.
And a slider 16e supported so as to reciprocate forward and backward with respect to the bottom surface of the main body 16a so as to face the engaging portions 16d, 16d in the vertical direction, and the slider 16e.
And a first stopper 16 fixedly arranged at a predetermined interval in the front-rear direction in the discharge path 15 so as to face the front-rear direction.
The second stopper 16g has a lateral width smaller than the space between the f and the engaging portions 16d, 16d and projects rearward. Then, in the initial state, the main body 16a is retracted to the final position where the slider 16e abuts against the first stopper 16f as shown by the alternate long and short dash line in FIG. , The engaging portions 16d, 16d are mounted thereon, and the second pushing portion 16c is projected to the upstream side of the box B waiting at the boxing position P6. In this state, the empty box B is the first pushing portion. 16b is supplied to the front of the main body 16b, and after the gripping means 1 is pulled out from the packing position P6 by the transfer means 3, the main body 16a is moved forward manually or by a driving unit such as an air cylinder. Pushing unit 16
At the same time, the empty box B is pushed to the boxing position P6 at b, and at the same time, the box B waiting at the boxing position P6 is pushed to the downstream side by the projecting second pushing portion 16c, and the main body 16a advances as it is. By abutting the slider 16e against the second stopper 16g as shown by the solid line and the chain double-dashed line in FIG. 4 (a), the slider 16e retracts with respect to the main body 16a, and the engaging portions 16d and 16d are disengaged from above the second stopper 16g. Pushing unit 16
immerse c below the carry-out path 15 and leave the main body 16 as it is.
Even if a is retracted, as shown in FIG.
c returns to the initial state without interfering with the empty box B pushed to the boxing position P6 by the first pushing section 16b. Further, if necessary, when the main body 16a is moved forward, the engaging portions 16d, 16d are not easily disengaged from the slider 16e due to, for example, vibration so that the second pushing portion 16c is not retracted below the carry-out path 15 so that the temporary holding means 16i is provided. Is provided from the main body 16a to the slider 16e. In the case of the illustrated example, a hemispherical concave portion 16j is provided in one of the swinging piece 16h having the second pushing portion 16c and the engaging portions 16d, 16d, or the slider 16e, and from the other. It is composed of an elastic body 16l such as a compression spring that elastically presses the ball 16k that engages with the recess 16j.

Next, the operation of the stacking box packing device will be described. First, the carry-in conveyor 11 as shown in FIG.
The articles A are sequentially loaded onto the elevator 12b by the operation of, and the elevators 12b are lowered to pile up the articles A upwardly with this loading, and the stacked articles A ...
When the number of steps reaches a predetermined number, the elevator 12b further descends to the lower limit position.
The pushing surface 13a moves forward and pushes the stacked articles A on the elevator 12b onto the conveying path 14.

In the case of this embodiment, when the articles A ... Pushed onto the conveying path 14 in the stacked state are in three rows, the front faces A3 ... of the articles A ... At the downstream end in the pushing direction abut. While being abutted against the portion 14b and positioned in the pushing direction, the downstream two rows of the articles A ..., A ... face the holding means 1 on standby and stop. In this state, the left and right opposite side surfaces A1 ..., A1 ..., A of these two rows of articles A.
1, ..., A1 ... are vertical bar portions 1a ..., 1 of the gripping means 1 ...
are engaged with a ... And sandwiched in the left-right width direction, and thereby are held immovably at least in the width direction, and the horizontal bar portions 1b ..., 1b ... Standing at the wide position P1 are the lowermost articles A '. , A'opposite each other along the bottom surfaces A2, A2.

After that, the operation of the transfer means 3 is started, and first, as shown in FIG. 1 (a), the gripping means 1 ...
b ..., 1b ... are bottom surfaces A2, A of the lowermost articles A ', A'
, 2 so that the two rows of articles A ..., A ... are gripped in the stacked state and at the same time the upper position P4 of the transport path 14 is held.
Lift up to. Following this, the articles A, ..., A lifted in the stacked state are horizontally transferred by the horizontal transfer drive unit 3b to a position P5 just above the box B above the empty box B on the carry-out path 15.

Article A horizontally transferred to the position P5 directly above the box
, A ... Ascend / descend drive unit 3a as shown in FIG.
As a result, it is lowered to the packing position P6 in the empty box B together with the gripping means 1, and is packed while being gripped by the vertical bar portions 1a and the horizontal bar portions 1b. At the time of this box packing, the vertical bar portions 1a ... And the horizontal bar portions 1b ... Hold the articles A ..., A ... At the same time, serve as a guide so that the articles A ..., A ... can easily enter the empty box B. . Immediately after the lowering of the gripping means 1 ...
The drive means 2 starts to operate and the vertical rod portions 1a ..., 1a ... Are rotated by a predetermined angle, whereby the horizontal rod portions 1b ..., 1b ... Are respectively moved from the wide position P1 to the narrow position P2, and the lowermost step is performed. 1'is removed from the bottom surfaces A2, A2 of the articles A'and A'and the width dimensions of the horizontal rod portions 1b ..., 1b ... Are substantially the same as the width dimensions of the vertical rod portions 1a.

After that, the operation of the transfer means 3 is restarted, the lifting means 3a starts to raise the gripping means 1 ..., and the vertical rod portions 1a ..., 1a ... And the horizontal rod portions 1b.
Opposite sides A1 ..., A of the boxed article A ...
1 and the inner side surfaces B2, B2 of the box B through the gaps S, S to be pulled upward to the position P5 directly above the box.

Following this, the horizontal transfer drive unit 3b horizontally transfers the transfer path 14 to a position P4 above the transfer path 14, and thereafter,
The elevator drive unit 3a descends to return to the standby position P3,
Immediately after returning to the standby position P3, or the vertical bar 1a
, 1a and horizontal bar portions 1b, 1b ... are pulled from the box B and returned to the standby position by the drive means 2 by rotating the vertical bar portions 1a, 1a. Stick 1
, b move from the narrow position P2 to the wide position P1 and return to the initial state.

After that, as shown in FIGS. 3 and 4, the box B, which has been boxed by the box feeding means 16, is moved to the boxing position P.
At the same time as being carried out from 6 to the downstream side, the empty box B is carried in to the packing position P6, and the above-described operation is repeated.

On the other hand, the one shown in FIGS. 5 and 6 and the one shown in FIG. 7 are other embodiments of the present invention, respectively, and both of them are the same as those shown in FIGS. Unlike the embodiment shown in FIG. 4, the other structure is not shown but is the same as the embodiment shown in FIGS.

The drive means 2 shown in FIGS. 5 and 6 is replaced with the same number of rotation drive portions 2a as the vertical rod portions 1a ..., 1a of the embodiment shown in FIGS. A slide plate 2d, to which a reciprocating drive unit 2c such as an air cylinder is connected, is supported above the fixed plate 2b through which the 1a ... The long holes 2e ... and the vertical bar portions 1a ...
1a ... is connected to the upper end by a link mechanism 2f.
By reciprocating the slide plate 2d in the front-back direction by the operation of the reciprocating drive unit 2c, the link mechanisms 2f ..., 2f.
, 1a ... to the horizontal bar portions 1b ..., 1b ...
Are rotated by about 90 degrees in the plane so as to move to the wide position P1 and the narrow position P2.

The drive means 2 shown in FIG.
, 1a ... Reciprocating drive parts 2h, 2i such as air cylinders above the fixing plate 2g which penetrates in the vertical direction.
The slide plates 2j, 2k connected to each other are supported so as to be reciprocally movable in the front-rear direction, and these slide plates 2j, 2k are also supported.
Racks 2l and 2m formed on the left and right sides of k and the vertical bar 1
a ..., 1a ... Pinion gears 2n ...
, 2o ... and the reciprocating drive units 2h and 2i are simultaneously operated to reciprocate the slide plates 2j and 2k in the front-rear direction to thereby move the racks 2l and 2m and the pinion gear 2n.
, 2o ... through the vertical bar portions 1a ..., 1a.
, 1b are rotated by about 90 ° in the plane so as to move to the wide position P1 and the narrow position P2.

Therefore, the driving means 2 shown in FIGS.
, Requires the same number of rotation drive units 2a as the vertical rods 1a, 1a, ..., On the other hand, the drive means 2 shown in FIGS. 5 and 6 requires only one reciprocating drive unit 2c. Further, the driving means 2 shown in FIG. 7 only needs to have two reciprocating driving portions 2h and 2i, and there is an effect that the cost can be reduced by these amounts. However, it is difficult for the driving means 2 shown in FIGS. 5 and 6 and the driving means 2 shown in FIG. 7 to adjust and move the vertical bar portions 1a ..., 1a ... In response to the size change of the article A. Has an effect that the drive means 2 shown in FIGS. 1 to 4 can more easily adjust and move the vertical bar portions 1a ..., 1a.

In the embodiment shown above, the stacked articles A are
, Are pushed by the pusher 13 onto the conveyance path 14 on which the gripping means 1 stands by, and both side surfaces A1, ..., A1 facing each other are pushed.
, Are opposed to the waiting vertical bar portions 1a ,, 1a, ..., And the bottom surface A2 of the article A'in the lowermost stage is set to the horizontal bar portions 1b ,, 1b.
However, the present invention is not limited to this, and the gripping means 1 is moved closer to the stacked articles A on standby,
The vertical bar portions 1a ..., 1a ... Are opposed to both side surfaces A1 ..., A1 ..., and the horizontal bar portions 1b.
You may make it hold | grip facing the bottom face A2 of this.

Further, if necessary, a positioning guide may be provided continuously with the gripping means 1 so that the articles A gripped by the gripping means 1 ... Do not move in the horizontal direction orthogonal to the transfer direction during movement. Also, the carry-in conveyor 11 and the stacking mechanism 12 are not limited to the above-described structure, and may have another structure as long as they perform the same operations as those described above. For example, the carry-in conveyor 11 instead of the above-described carry-in control unit 12a. By controlling the operation of the drive unit, the operation of the carry-in conveyor 11 may be stopped based on the input of the carry-in stop signal, and the operation of the carry-in conveyor 11 may be started based on the input of the release signal.

Further, on the downstream side of the packing position P6 of the carry-out path 15, although not shown, the upper flap of the box B, which has been packed, is folded in the closing direction or in the closing direction, if necessary. It is also conceivable to provide a sealing mechanism for sealing the upper flap with tape or the like.

[0035]

Since the present invention has the above-mentioned structure, it has the following advantages. 1. By extending and engaging the vertical bar portion of the gripping means along the opposite side surfaces of the stacked articles in the vertical direction,
Stacked articles are held immovably in the width direction by being sandwiched by the vertical bars, and the horizontal bars project and engage along the bottom surface of the bottommost article to move up and down while stacked. It becomes possible, and by lowering the gripping means 1 into the box by the transfer means in this state, the articles stacked with the vertical bar portion and the horizontal bar portion of the gripping means are packed in a box, and thereafter,
By rotating the vertical bar section by the driving means to move the horizontal bar section from the wide position to the narrow position, the horizontal bar section is displaced from the bottom surface of the article at the bottom, and the width dimension of the vertical bar section becomes substantially the same. After that, by raising the gripping means from the inside of the box with the transfer means in this state, only the vertical bar and the horizontal bar pass through the gap between the opposite side surfaces of the packed article and the inner surface of the box. Since it is pulled out upwards, it can be boxed in a stacked structure with a simple structure. Therefore, compared to the conventional one that can only pack one item per box in one boxing operation, one boxing operation completes the packaging of the specified number of steps, which can significantly reduce the time required for boxing and enable high-speed handling. Becomes

2. By constructing a substantially L-shaped bar member in which the lower end portion of the vertical bar portion is bent and the horizontal bar portion is integrally formed, between the outer peripheral side surface of the boxed article and the inner side surface of the box, the diameter of the bar is about the same. Since the vertical bar portion and the horizontal bar portion can be pulled out in the gap of, the outer dimension of the article to be boxed while gripping the outer peripheral side surface of the article with the grasping means and the inner dimension of the box can be made as close as possible . Therefore, as compared with the conventional one in which a pair of plane L-shaped grippers need to be formed between the outer peripheral side surface of the boxed article and the inner side surface of the box, the outer peripheral side surface of the boxed article and the box The gap between the inner surface of the box and the inner surface of the box can be significantly reduced, and the volume ratio of the boxed article can be improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional front view of a stacking box packaging device according to an embodiment of the present invention, in which (a) shows a state where a gripped article is transferred,
(B) shows before and after packing in a box.

FIG. 2 is an enlarged vertical cross-sectional side view showing a time of pushing after stacking.

FIG. 3 is an enlarged transverse plan view of the same.

FIG. 4 is an enlarged vertical side view of the carry-out path, in which (a) shows a case when the box is supplied and (b) shows a case where the box is restored after the supply.

FIG. 5 is a partially enlarged cross-sectional plan view of a stacking box packing device showing another embodiment of the present invention.

FIG. 6 is a vertical sectional side view of the same.

FIG. 7 is a partially enlarged cross-sectional plan view of a stacking box packaging device according to another embodiment of the present invention.

[Explanation of symbols]

 A article A'bottom article A1 side surface A2 bottom surface B box P1 wide position P2 narrow position 1 gripping means 1a vertical bar portion 1b horizontal bar portion 2 driving means 3 transfer means

Claims (3)

[Claims] 1. A stacking box packing device for gripping a plurality of stacked articles (A) ... and packing them in a stacked state in a box packaging device, wherein both side surfaces of the stacked articles (A) ... A1) ... (A1) ... Vertical bar portions (1a) (1a) extending in the up-down direction, and these vertical bar portions (1a) (1
A horizontal bar portion (1b) protruding from the lower end of a) in a substantially horizontal direction
A plurality of sets of gripping means (1) composed of (1b) are hung vertically, and the horizontal bars (1b) ... are at the bottom of the bottom (A2) of the article (A ′) at the bottom of the gripping means (1). ) Along a wide position (P1) projecting along with a narrow position (P2) which is separated from the bottom surface (A2) and has substantially the same width dimension as the vertical bar (1a). A drive means (2) for rotating the rod portions (1a) is provided in series, and the gripping means (1).
A stacking box packing device, characterized in that a drive means (2) is provided inside and outside the box (B), and a transfer means (3) for reciprocating at least in the vertical direction is connected in series. 2. The holding means (1) is provided with a vertical bar (1).
The stacking box packaging device according to claim 1, wherein the stacking box packaging device is a substantially L-shaped bar material in which a lower end portion of a) is bent to integrally form a horizontal bar portion (1b). 3. Articles of which the horizontal bar portions (1b) ... are at the bottom of the gripping means (1) ... in the middle of a conveying path (14) in which the stacked articles (A) ... Are conveyed in the horizontal direction. The stacking box packaging device according to claim 1 or 2, which is made to stand by at a wide position (P1) protruding along a bottom surface (A2) of (A ').