JP6980281B2 - Box flap expansion device - Google Patents

Description

The present invention relates to a flap expanding device for a box before packing so that when an article is supplied to a box such as a cardboard box, the flap extending from the opening of the box is narrower than the opening and does not fall inward. ..

A flatly folded cardboard box is made into a square cylinder to seal the bottom, and a flap that connects to each side panel of the box and extends outward at the opening that opens on one side that is the supply side of the article. However, it may have a habit of falling inside the opening. In such a case, there arises a problem that the articles interfere with the flaps when the articles are collectively supplied into the box, and the boxing is not performed properly. Therefore, various devices (Patent Document 1) in which the flaps are expanded outward in advance prior to the supply of articles have been proposed. In the device disclosed in Patent Document 1, a engaging member is projected in the radial direction on each of the four rotating shafts arranged in a square shape according to the opening of the box, and the four rotating shafts are rotated all at once. By doing so, the four flaps bent inward of the opening are expanded outward so that the article does not interfere with the flap when the article is supplied.

Japanese Unexamined Patent Publication No. 61-287523

In the device disclosed in Patent Document 1, four flaps can be expanded outward at a time, but when the size of the box is changed, the positions of the four rotating shafts can be changed, the position of the drive system can be adjusted, and the parts can be expanded. It is extremely complicated and not easy to deal with, such as the need for replacement. In addition, it is pointed out that four types of expansion means for expanding each flap to the outside are required, which complicates the configuration.

Therefore, an object of the present invention is to provide a box flap expanding device capable of easily responding to a change in the size of a box with a simple configuration.

The box flap expanding device of the invention according to claim 1 of the present application is
A first flap (11a, 11a) extending from a pair of opposite first side panels (11, 11) of a box (10) molded into a square cylinder and one of which opens, and the first side panel (11). A second flap (12a, 12a) extending from a pair of second side panels (12,12) crossing and facing, 11) and a flap of a box with an expander (14) to expand. It ’s a high-lift device,
A pair of first flaps (11a, 11a) facing the inside of the first flap (11a, 11a) by the one end and the other end in the extending direction of the expanding body (14) at an inner position. ) is pressed is outward, the first flap (11a, 11a) so as to move to the first outer spread position Ru obtained with the habit folded to spread inclined outwardly (Lb1, Lb2), the A first moving means (17) capable of moving the expansion body (14) in the opposite direction of the first side panel (11, 11), and
The second flap (12a, 12a) is outward by the outer edge in the direction intersecting the extending direction of the expander (14) at the inner position facing the inside of the second flap (12a, 12a). is pressed, the second flaps (12a, 12a) so as to move to the second outer expanded position Ru obtained with the habit folded to spread inclined outwardly (Lb3), the押拡body (14) It is characterized by comprising a second moving means (18) that can move in the opposite direction of the second side panel (12, 12).
According to the first aspect of the present invention, the first flaps facing each other on the other side and the second flap facing each other on the other side can be expanded outward by a common expansion body to form a fold. Since it is configured, it can be configured to be simpler than a configuration in which expansion means are provided for each flap. Further, by changing the amount of movement of the expanded body by the first moving means and the second moving means, it is possible to easily cope with the change in the size of the box.

In the invention according to claim 2, the expanding body (14) is provided with a pair so as to be close to each other in the facing direction of the second side surface panel (12, 12).
The second moving means (18) is characterized in that the pair of expanding bodies (14, 14) are separated from each other and the second flaps (12a, 12a) facing each other are expanded outward. And.
According to the second aspect of the present invention, since the pair of expanders are configured to expand the two opposing second flaps at once, the processing time can be shortened.

In the invention according to claim 3, a holding means (20) for holding the box (10) in a predetermined position is provided.
The flaps (11a, 12a) of the box (10) held by the holding means (20) are configured to be expanded by the expanding body (14).
According to the third aspect of the present invention, since the box is held by the holding means and the flap is expanded to be expanded, the habit can be satisfactorily applied so that the flap is expanded outward.

In the invention according to claim 4, the expansion body (14) includes a rod-shaped member (14a) extending in a direction facing the first side surface panel (11, 11), and one end of the rod-shaped member (14a) and the like. characterized in that at the tip end is configured earthenware pots by Ru pushed open the first flap (11a).
According to the invention of claim 4, the flap can be satisfactorily bent even though it has a simple structure.

In the invention according to claim 5, the expander (14) pushes the first side panel (11) outward from the inside of the box (10) to pack the box (10) into a boxing portion (S2). wherein the movement is controlled by the by the Hare before Symbol first moving means moves towards (17).
According to the fifth aspect of the present invention, since the box can be transferred to the boxing portion by using the expansion body that expands the flap, another transport means such as a conveyor for carrying out the box to the boxing portion is provided. Not only can the device be made with a simpler configuration without the need, but the device cost can be kept low.

In the invention according to claim 6, the first moving means (17) can move the first slider (26) and the first slider (26) in a direction opposite to the first side panel (11, 11). Equipped with a first driving means (27)
The second moving means (18) is arranged so as to be movable in a direction from the opening of the box (10) toward the bottom of the box (10) with respect to the first slider (26). ), The second driving means (33) capable of moving the second slider (32), and the expansion body (14) rotatably supported with respect to the second slider (32) at the internal position. It is equipped with a third driving means (37) that can move between (La) and the second outward expansion position (Lb3).
The second driving means (33) is configured to be able to move the second slider (32) so that the expanding body (14) moves from the inner position (La) to the inside of the box (10). It is characterized by that.
According to the invention of claim 6, the driving means for moving the expansion body in the facing direction of the first side panel, the facing direction of the second side panel, and the direction from the opening of the box toward the bottom is separately provided. Therefore, by controlling each drive means individually, it is possible to easily and easily respond to the resizing of a plurality of boxes.

According to the present invention, it is possible to satisfactorily fold the flap while having a simple structure. In addition, the size of the box can be easily changed.

It is a schematic front view which shows the flap expanding apparatus. It is a schematic side view which shows the flap expanding device in the state which the expansion body is positioned at the habituation position. It is a schematic side view which shows the flap expanding device in the state which the expanding body is positioned at the pushing position. It is a schematic side view of the main part which shows the flap expansion apparatus of another embodiment.

Next, a preferred embodiment of the box flap expanding device according to the present invention will be described below with reference to the accompanying drawings.

In the box flap expanding device according to the embodiment, the box 10 formed into a square cylinder from the corrugated cardboard sheet folded in the previous step and conveyed is connected to the lower side of the side panels 11 and 12 on all sides. A pair of first flaps 11a, 11a and a pair of second flaps 12a, 12a extending upward from each of the side panels 11,12 at the bottom where the bottom flaps are folded and closed and at the opening as an article supply port. It is equipped with. (See FIGS. 1 to 3). Regarding the side panels 11 and 12, the side panels facing each other before and after the transport direction of the box 10 to the next process are referred to as the first side panel 11, and the side panels facing each other on the left and right sides intersecting the transport direction are referred to as the second side surfaces. Referred to as panel 12.

1 to 3 are schematic views showing a main part of the flap expanding device according to the embodiment, and the flap expanding device pushes and expands each of the flaps 11a, 11a, 12a, 12a of the box 10. The expanded body 14 and the expanded body 14 face the inside of the first flaps 11a, 11a extending from the first side surface panels 11, 11 at the opening 10a of the box 10 (enclosed by the four flaps 11a, 12a). From the inner position La to the front and rear outward expansion positions Lb1 and Lb2 (first outward expansion position) where the first flaps 11a and 11a outside the first side surface panels 11 and 11 are expanded outward by the expansion body 14. The moving first moving means 17 and the expanding body 14 extend from the second side surface panels 12, 12 at the opening 10a, and the second side surface panel 12 from the inner position La facing the inside of the second flaps 12a, 12a. A second moving means 18 for moving the second flaps 12a, 12a outside the 12 to the left and right outward expanding positions Lb3 (second outward expanding position) expanded outward by the expanding body 14 is provided. ..

As shown in FIGS. 1 and 2, the flaps 11a, 11a, 12a, 12a of the box 10 which has been sent from the previous process by the conveyor 19 and has an open upper portion are expanded outward by the expanding body 14. It is sent to the habituation part S1. A holding means 20 for holding the box 10 according to its outer dimensions is arranged in the habituation portion S1. The holding means 20 is a pair of air cylinders as a driving means for driving the holding bodies 23, 23 capable of holding the first side panel 11 on the bottom side before and after the transport direction of the box 10 so as to protrude from the transport path of the box 10. A holding cylinder 22 is provided as a driving means for moving the air cylinders 21 and 21 relatively close to each other and sandwiching the first side surface panel 11 by the holding bodies 23 and 23 when they are close to each other.

The holding means 20 includes a link mechanism 24 connected to both air cylinders 21 and 21, and by operating the link mechanism 24 with the holding cylinder 22, the holding bodies 23 and 23 convey the box 10. It is configured to move in close proximity between the holding position that is sandwiched and held from the front and back in the direction and the release position where the holding bodies 23, 23 are separated from each other and release the holding of the box 10. Then, the box 10 is held in a predetermined position by the pair of holding bodies 23, 23 according to the outer dimensions of the box 10.

As shown in FIG. 1, the first moving means 17 is arranged above the habituation portion S1 and the boxing portion S2 described later. The first moving means 17 slides the first slide guide 25 extending in the transport direction, the first slider 26 movably supported by the first slide guide 25, and the first slider 26. A first servomotor 27 as a first driving means that reciprocates back and forth in the transport direction along the guide 25 is provided. In the embodiment, a timing belt 28 wound around a toothed pulley supported apart from each other in the transport direction is connected to the first slider 26. Then, the first slider 26 reciprocates back and forth in the transport direction, so that the expansion bodies 14, 14 expand the pair of first flaps 11a, 11a outward, and the expansion positions Lb1, Lb2 before and after the expansion position Lb1, Lb2. It is driven and controlled to move between. Further, the first slider 26 is driven and controlled to move along the transport direction from the habituation portion S1 toward the boxing portion S2.

As shown in FIGS. 1 and 2, the second moving means 18 has a retracted position Ha that is separated outward from the extended end of the flap of the box at the opening, and a habit corresponding to the inner position La. Between the position Hb and the pushing position Hc (see FIGS. 1 and 3) facing the inside of the side panels 11,11,12,12 (inside the box 10) toward the bottom of the box from the habituation position Hb. The first actuating means 29 for moving the expander body 14 up and down, and the second actuating means for moving the expander body 14 in the left-right direction, which is orthogonal to the transport direction of the box 10 by the first slider 26. 30 and. The first actuating means 29 includes a support base 34 arranged on the first slider 26, a second slide guide 31 arranged on the support base 34 and extending in the vertical direction, and the second slide guide. A second slider 32 movably supported by 31 and a second servomotor 33 as a second driving means for moving the second slider 32 up and down along the second slide guide 31 are provided. In the embodiment, the first actuating means 29 is configured from a linear servo actuator that moves the second slider 32 by driving the ball screw arranged along the second slide guide 31 by the second servomotor 33.

As shown in FIGS. 1 and 2, the second actuating means 30 has a moving base 16 arranged on the second slider 32 and a third moving base 16 arranged on the moving base 16 and extending in the vertical direction. A slide guide 35, a third slider 36 movably supported by the third slide guide 35, and a third servo as a third driving means for moving the third slider 36 up and down along the third slide guide 35. A motor 37 is provided. In the embodiment, the support 15 provided with the expanding body 14 is rotatably supported by each of the support shafts 40 symmetrically arranged in the moving base 16, and is supported by the third slider 36. The support 15 is rotatably supported via the connecting member 38, and the expanding bodies 14, 14 provided on the supports 15, 15 move in close proximity to each other as the third slider 36 moves up and down. It is designed to move in the left-right direction.

As shown in FIG. 2, the support 15 includes an arm 15a, and an expansion body 14 is arranged at an extending end of each arm 15a. In this example, by rotating the pair of supports 15 and 15 in the forward and reverse directions, the pair of expanders 14 and 14 move in a direction in which they approach each other so that they can enter through the opening of the box 10. It is configured to move between the side position Lc (two-dot chain line position in FIG. 2) and the left and right outward expansion positions Lb3 (solid line position in FIG. 2) that push the pair of second flaps 12a and 12a outward. Will be done. In this example, the expanding body 14 is moved to the folding position Le between the leaning position Lc and the outward expanding position Lb3 when the first flap 11a is bent.

As shown in FIG. 1, the push-expanding body 14 includes a rod-shaped member 14a extending in the transport direction and pushing portions 14b provided at both ends of the rod-shaped member 14a in the extending direction, and is provided with a pair of pushing portions. The 14b, 14b abuts on the inner surface of the second flaps 12a, 12a and is expanded from the inside, and the front and rear pushing portions 14b, 14b abut on the inner surface of the corresponding first flaps 11a, 11a and expands from the inside. The operation of the expanding body 14 is controlled by the first moving means 17 and the second moving means 18 (second operating means 30). Then, the first and second flaps 11a and 12a are moved outward from the side panels 11 and 12 with the fold rule formed in advance at the connection portion between the flaps 11a and 12a and the side panels 11 and 12 as a base point. It is possible to incline in the expanded state to obtain a good opening state in which the flaps 11a and 12a do not fall inward. By forming the contact surfaces of the pushing portions 14b with the first and second flaps 11a and 12a in an arc shape, the sheet material is damaged when the first and second flaps 11a and 12a are pushed and expanded. Can be prevented. Further, the length of the push-and-expanded body 14 in the transport direction is set to be shorter than the facing distance in the transport direction of the side panels 11 and 12 in the minimum size box 10 to be processed.

The push-expanding body 14 functions as a pushing means for moving the box 10 in which the flaps 11a and 12a are habituated in the habituation portion S1 forward to the box packing portion S2. That is, as shown in FIG. 1, the movement amount of the first slider 26 is set so that the expansion body 14 that has descended to the push position Hc can be moved forward to the extrusion position Lx that has pushed the box 10 all the way to the box packing portion S2. Will be done. As a result, in the habituation portion S1, the push-expanding body 14 that has finished the habit-setting operation is lowered to the push-off position Hc located near the bottom of the box 10, and then the first moving means 17 moves the push-expanding body 17. By moving the 14 forward toward the boxing portion S2, the expansion body 14 comes into contact with the inner surface of the first side panel 11 on the front side from the inside of the box, and the box 10 is pushed to the boxing portion S2 in the next step. Will be done. By controlling the rotation amount of each of the servomotors 27, 33, 37 in the first actuating means 29 and the second actuating means 30 of the first moving means 17 and the second moving means 18, the extruded body 14 , 14 evacuation position Ha, habituation position Hb, push position Hc, inner position La, front and rear outer expansion positions Lb1, Lb2, left and right outer expansion positions Lb3, leaning position Lc, folding position Le and extrusion position Lx, etc. It is configured so that the position can be adjusted as appropriate.

As shown in FIG. 1, the carry-out conveyor 41 is arranged downstream from the boxing portion S2 in the transport direction, and a table 42 that supports the bottom surface of the box 10 is arranged between the habituation portion S1 and the carry-out conveyor 41. It is set up. Then, the box 10 in which the articles are packed in the boxing section S2 is configured to be pushed out to the carry-out conveyor 41 by the next empty box 10 that is pushed from the transport upstream to the boxing section S2 by the expanding body 14.

Next, the operation of the flap expanding device according to the embodiment will be described. As shown in FIG. 2, when the box 10 whose upper portion opens from the side is sent to the habituation portion S1 by the transfer conveyor 19, the pair of holding bodies 23, 23 use the first side panel 11, 11 of the box 10. Hold the box 10 by sandwiching the bottom side of the box from the front and back.

The expanders 14, 14 waiting at the upper retracted position Ha in the habituation portion S1 lower the second slider 32 by driving the second servomotor 33 of the first actuating means 29. The expansion bodies 14, 14 approaching the closer position Lc enter through the opening of the box 10 and descend to the habituation position Hb, and face the inside of the first and second flaps 11a, 11a, 12a, 12a. Positioned at position La. Then, as shown in FIG. 2, by lowering the third slider 36 by the second actuating means 30, the expanding bodies 14, 14 arranged on the pair of supports 15, 15 are separated from each other. It moves to the left and right outward expansion positions Lb3. As a result, the left and right second flaps 12a and 12a are expanded outward by the expanding bodies 14, 14, and each of the second flaps 12a is based on the fold rule of the connection portion with the second side surface panel 12. A crease is added so that it is tilted outward and spreads out. Since the contact portions of the pushing portions 14b and 14b that come into contact with the inner surface of the second flap 12a of the expanding body 14 are formed in an arc shape, the sheet is scratched when the second flap 12a is bent. Can be prevented.

Next, the third slider 36 is raised, and the pair of supports 15 and 15 are rotated in opposite directions to move the pair of expanders 14 and 14 to the folding position Le, and the expander 14 is moved. , 14 are positioned at positions facing between the pair of the first flaps 11a and 11a facing each other (inner position La). Then, by reciprocating the first slider 26 back and forth in the transport direction by the first moving means 17, the expanding bodies 14 and 14 move between the front and rear outward expanding positions Lb1 and Lb2 as shown in FIG. After moving, one of the first flaps 11a and 11a and the other are alternately expanded outward by the expanding bodies 14, 14, and each of the first flaps 11a is a folding rule of the connection portion with the first side surface panel 11. A crease is added so that it is tilted outward and spreads from the base point. Since the contact portions of the pushing portions 14b and 14b that come into contact with the inner surface of the first flap 11a of the expanding body 14 are formed in an arc shape, the sheet is scratched when the first flap 11a is bent. Can be prevented.

After the flaps 11a, 11a, 12a, 12a on the four sides of the box 10 are bent, the expansion bodies 14, 14 are positioned so as not to interfere with the front and rear first side panel 11, 11 by the first moving means 17. By moving the second slider 32 down by the first actuating means 29, as shown in FIG. 3, the pair of expansion bodies 14, 14 descend from the habituation position Hb and the first side panel. It is positioned at the height position of the pushing position Hc facing the inside of 11. Further, the holding of the bottom side of the box 10 by the pair of holding bodies 23, 23 of the holding means 20 is released. Then, due to the forward movement of the first slider 26, the front pushing portion 14b of the expanding bodies 14 and 14 abuts on the inner surface of the front first side surface panel 11 and pushes the box 10 to the boxing portion S2. Since the pair of pushing portions 14b and 14b are positioned near the bottoms at both ends of the first side surface panel 11 in the left-right direction and are configured to push the first side surface panel 11 from the inside, they are pushed to the boxing portion S2. It is possible to suppress the change in the posture of the box 10 and stably transfer the box 10.

After the box 10 is pushed to the box packing portion S2 by the expanding body 14, 14, the second slider 32 is raised by the first operating means 29, and the expanding body 14, 14 causes the flap 11a at the opening 10a of the box 10. , 11a, 12a, 12a are moved to a position separated upward from the extending end. Then, by moving the first slider 26 backward by the first moving means 17, the expanding bodies 14 and 14 are positioned at the retracted position Ha above the opening of the box 10 which is then sent to the habituation portion S1. Be done. Then, by controlling the operation of the expansion bodies 14, 14 in the same manner as described above, the flaps 11a, 11a, 12a, 12a on the four sides of the box 10 held by the habituation portion S1 are processed so as to be sequentially expanded. To.

A predetermined number of articles are packed in an empty box 10 that has been pushed to the boxing section S2. Since all the flaps 11a, 11a, 12a, 12a have a crease and extend outward from the side panels 11,11,12,12 on all sides, the article interferes with the flaps 11a, 11a, 12a, 12a. It is possible to supply the goods into the box well. Further, when the next empty box 10 is pushed by the expanders 14, 14, the rear end surface of the box 10 in which the articles are packed is extruded toward the carry-out conveyor 41 by the front end surface of the next empty box 10. Is done.

In the flap expanding device of the embodiment, the flaps 11a, 11a, 12a, 12a on all sides are expanded by the expanding bodies 14, 14 to give a folding habit. The configuration can be simpler than the configuration in which the habituation members are provided respectively. Further, the processing time can be shortened by configuring the left and right second flaps 12a, 12a to be expanded together by the pair of expansion bodies 14, 14. Further, when the flaps 11a, 11a, 12a, 12a are expanded by the pair of expansion bodies 14, 14, the bottom of the box 10 is sandwiched from the front and back by the holding means 20 to hold the box 10. The box 10 does not shift in position, and the folding habit can be satisfactorily added. Moreover, the pushing portions 14b and 14b of the expanding bodies 14 are pressed against two locations separated in the transport direction which is the longitudinal direction of the second flap 12a, and the pushing portions 14b and 14b of the pair of expanding bodies 14 and 14 are pressed against each other. Since 14b is pressed against two locations separated in the left-right direction, which is the longitudinal direction of the first flap 11a, to expand the flaps 11a, 12a, the flaps 11a, 12a are not distorted and are along the longitudinal direction. It is possible to add a crease that spreads evenly. Further, by making the expansion bodies 14, 14 that expand the flaps 11a, 11a, 12a, 12a function as a transfer means for transporting the box 10 to the next process, the installation of transport equipment such as a conveyor is omitted. can do. As a result, the flaps 11a, 11a, 12a, 12a can be squeezed and the box 10 can be transferred satisfactorily with an extremely simple configuration, and the equipment cost can be suppressed to a low level.

In the flap expanding device of the embodiment, the servomotors 27, 33, 37 are used as the driving means of the first operating means 29 and the second operating means 30 of the first moving means 17, the second moving means 18. By changing the numerical data individually input to each of the servomotors 27, 33, 37, it is possible to easily and flexibly change the size of the box 10. Further, the empty box 10 having a crease in the connection portion between the flaps 11a and 12a and the side panel 11,12 can be accurately transferred to the boxing portion S2.

(Another example)
FIG. 4 shows a main part of another embodiment of the flap expanding device, and in the other embodiment, only a part different from the above-described embodiment is described, and the same member is designated by the same reference numeral. And.
In the flap expanding device of another embodiment, only one expanding body 14 is provided on the moving base 16. That is, in another embodiment, the third slider 36 of the second actuating means 30 is moved up and down to rotate one support 15 in the left-right direction, whereby the expansion body 14 provided on the support 15 is used. The left and right second flaps 12a and 12a are configured to be alternately pushed outward. The pushing portion 14b in the push-expanded body 14 of another embodiment is formed to be long in the left-right direction to widen the contact area with the first flap 11a and the first side surface panel 11 to push the first flap 11a. When expanding or pushing the first side panel 11 from the inside to push the box 10, it is possible to perform stable folding and transfer equal to or higher than the case where the pair of expanding bodies 14 are adopted. ..

(Change example)
The present invention is not limited to the configuration of the embodiment, and can be modified as follows, for example. Further, not limited to the following modified examples, various embodiments may be adopted within the scope of the gist of the present invention for the configurations described in the examples.
(1) The first moving means 17 for moving the expanding body 14, 14 back and forth, the first operating means 29 for moving the expanding body 14, 14 up and down, and the second operating means 30 for opening and closing the expanding body 14, 14 For example, various known moving mechanisms can be adopted.
(2) In the embodiment, the pair of supports 15 and 15 supported on the moving base 16 are rotated in a direction in which they are separated from each other to expand the second flaps 12a and 12a. It is possible to adopt a configuration in which a pair of supports 15, 15 supported so as to move linearly with respect to each other are moved in close proximity to each other. Further, even when one support 15 is arranged on the moving base 16 as in another embodiment, the support 15 is supported so as to be linearly movable, and the support 15 (expanded body 14) is placed in a box. It is possible to adopt a configuration in which the second flaps 12a and 12a are alternately pushed and expanded by linearly moving in a direction intersecting the transport direction of 10 by various moving mechanisms such as a rack, a pinion and a linear slider.
(3) The holding means 20 of the box 10 holds the box 10 by sandwiching it between the pair of holding bodies 23, 23 from the front and back, but instead of such a holding body, one appropriate place of the box 10 is held. Alternatively, a holding means having various other configurations such as suction holding by a plurality of adsorbents can be adopted.
(4) The transfer function to the next process, in which the side panel 11 is pushed by the expanding body 14 from the inside of the box 10, may be adopted as necessary, and the flaps 11a, 11a, respectively. After moving the expanding body 14 with the 12a and 12a expanded from the habituation position Hb to the retracting position Ha, the bottom surface of the box 10 is placed on a conveyor transport surface such as a belt conveyor and the box 10 is transferred to the next process. Another form of transfer may be adopted.

(5) In the embodiment, the arrangement of each member in the case of bending the box 10 having an open upper portion is illustrated, but it can also be applied to a processing form in which the opening of the box 10 is bent sideways.
(6) The flaps 11a, 11a, 12a, 12a of the expanders 14, 14 are expanded in the order of the left and right second flaps 12a, 12a of the box 10 → the first flaps 11a, 11a before and after the box 10. However, the order may be reversed.
(7) In the embodiment, the push-expanding bodies 14 and 14 are moved up and down (moving forward and backward with respect to the inside of the box) and the left and right second flaps 12a and 12a are pushed and spread by separate operating means 29 and 30. However, it is possible to adopt an interlocking mechanism that moves both by one means of transportation. Thereby, the two driving means can be combined into one, and the configuration can be simplified.
(8) In the embodiment, the push-expanding body 14 has been described with the push-feeding portions 14b and 14b provided at both ends of the rod-shaped member 14a in the longitudinal direction, but the push-out portions 14b and 14b are omitted and extend in the transport direction. It is possible to adopt a configuration in which the tip end portion or the outer surface of the rod-shaped member 14a is directly applied to the flaps 11a, 11a, 12a, 12a and expanded. With this configuration, the configuration can be made simpler.
(9) In the embodiment, the expanding body 14 is configured to be moved in the front-rear direction by the first moving means 17 to alternately expand the first flaps 11a and 11a, but the expanding body 14 is moved back and forth by an air cylinder or the like. A configuration can be adopted in which the pair of first flaps 11a, 11a is expanded by extending in the direction.

10 Box, 11 1st Side Panel, 11a 1st Flap, 12 2nd Side Panel 12a 2nd Flap, 14 Expander, 17 1st Moving Means, 18 2nd Moving Means 20 Holding Means, 26 1st Slider, 27 1st servo motor (1st drive means)
32 2nd slider, 33 2nd servo motor (2nd drive means)
37 Third servomotor (third drive means), La inner position Lb1, Lb2 Front and rear outward expansion position (first external expansion position)
Lb3 Left and right outward expansion position (second external expansion position)

Claims (6)

A first flap that is formed into a square cylinder and extends from a pair of facing first side panels of a box that opens on one side, and a pair of second side panels that intersect and face the first side panel. It is a flap expansion device for a box equipped with a second flap and an expander for expanding the flap.
Wherein said押拡of inner position where the first face on the inside of the flap, the one end and the other end of the extending direction, the pair of first flaps facing is pressed outwardly, said first flap and but to move to the first outer spread position Ru obtained with the habit folded to spread inclined outwardly, first moving means capable of moving the押拡body opposing direction of the first side panel,
The押拡of inner position facing the inner side of the second flap, the outer edge portion in the direction crossing the extending direction, the second flap is pressed outward, said second flaps inclined outwardly to move to the second outer Ru folding give the habit to spread Te expanded position, a second moving means capable of moving the押拡body opposite direction of the second side panel,
A box flap expansion device characterized by being equipped with. A pair of the expanding bodies are provided so as to be close to each other in the facing direction of the second side surface panel.
The flap expanding device for a box according to claim 1, wherein the second moving means is configured to expand the pair of expanding bodies outward by pushing the pair of expanding bodies apart from each other and facing each other. .. A holding means for holding the box in a predetermined position is provided.
The box flap expanding device according to claim 1 or 2, wherein the flap of the box held by the holding means is configured to be expanded by the expanding body. The押拡body, wherein the first comprises a side bar-like member extending in the opposite direction of the panel, and configured earthenware pots by Ru pushed open the first flap at the tip of the one end and the other end of the rod-shaped member The box flap expanding device according to any one of claims 1 to 3. The押拡body, pressing from the inside of the box the first side panel on the outside, characterized in that movement is controlled by the by the Hare before Symbol first moving means to move toward the box to the box packing portion The box flap expanding device according to any one of claims 1 to 4. The first moving means includes a first slider and a first driving means capable of moving the first slider in a direction facing the first side panel.
The second moving means includes a second slider that is movably arranged with respect to the first slider in a direction from the opening of the box toward the bottom of the box, and a second driving means that can move the second slider. And a third driving means capable of moving the expanding body rotatably supported with respect to the second slider between the inner position and the second outward expanding position.
The flap expansion of the box according to claim 5, wherein the second driving means is configured to move the second slider so that the expander moves from the inner position to the inside of the box. Opening device.

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