KR20200140414A - Multi-Row Apparatus for Folding Box - Google Patents

Abstract

The present invention relates to a multi-row box making machine. The multi-row box making machine includes: a frame; a plurality of loading stands installed in the frame as a plurality of rows such that a plurality of boxes having different sizes can be separated and loaded by size in a state in which the boxes are folded into a flat shape; a box supply unit sequentially supplying the boxes loaded on the loading stands; a shuttle moving along the frame in front of the plurality of loading stands; a forming unit installed in the shuttle, and unfolding the boxes into a cubic shape by withdrawing the boxes supplied by the box supply unit one by one; a folding unit folding a lower flap of the boxes unfolded by the forming unit; a taping unit taping the lower flap of the folded boxes; and a pair of transfer conveyors placed on both sides of the frame to transfer the boxes with the completely taped lower flap by being folded to both sides of the boxes. Therefore, the multi-row box making machine can have an effect of easily packing various kinds of products by continuously providing suitable boxes depending on the kinds of products to be packed.

Description

Multi-Row Apparatus for Folding Box}

The present invention relates to a boxer, and more particularly to a multi-row boxer capable of rapidly supplying boxes of various sizes.

In general, various types of products produced in large quantities in each field are packaged in a paper-made packaging box for the purpose of preventing damage, inducing interest from purchasers, or packaging transportation.

The packaging box is made of a material such as thick corrugated cardboard, and is folded to form a plate-like shape before being used so that it can be easily stored. When the product needs to be packaged, it is unfolded to form a box. Used for packaging.

These packaging boxes require the work of attaching tape after folding the lower flap for product packaging.In the past, since the worker had done this through manual work, the efficiency was significantly reduced. I am using it.

However, there is a problem in that various products cannot be packaged with a single box because the box box presented so far is boxed by loading only one type of box. In order to solve this problem, when using a combination of several boxers, it takes a lot of cost and uses too much space for installation.

Korean Patent Registration 10-0689239

The present invention was devised to solve the problems of the prior art described above. After separating and loading boxes of various sizes for each size, the present invention provides an appropriate box according to the type of packaging product to facilitate packaging of multi-kind products. Its purpose is to provide a multi-row box that can be used.

A multi-row box box according to the present invention for solving the above-described problems includes a frame; A plurality of loading platforms installed in a plurality of rows on the frame so that a plurality of boxes of different sizes can be separately stacked for each size in a flat folded state; A box supply unit for sequentially supplying the boxes loaded on the mounting table; A shuttle moving in front of the plurality of loading platforms along the frame; A forming unit installed on the shuttle and configured to unfold the boxes supplied by the box supply unit one by one in a three-dimensional shape; A folding unit that folds a lower flap of the box unfolded by the forming unit; A taping unit for taping the lower flap of the folded box; And a pair of transfer conveyors disposed on both sides of the frame to transfer the box on which the taping of the lower flap is completed by contacting both sides of the box.

Here, the box supply unit includes a cylinder installed on the mounting table; A sprocket connected to the rod of the cylinder and rotated when the rod moves forward and backward; A transfer chain that is installed to surround the sprocket while supporting the box to transfer the box forward when the sprocket rotates; It is installed to be movable along the mounting table, a pusher that pushes the loaded box from the rear to the front; comprises a.

In addition, the forming unit includes a rotating shaft rotatably installed on the shuttle; A rotation cylinder connected to the rotation shaft to rotate the rotation shaft when the rod moves forward and backward; A bracket installed on the rotation shaft and rotating together with the rotation shaft; A forward and backward cylinder installed on the bracket; A plate installed on the rod of the forward and backward cylinder and moving forward and backward toward the box; An adsorption pad installed on the plate to adsorb a side edge portion of the box; It consists of; an inhaler connected to the adsorption pad to provide a suction force to the adsorption pad.

In addition, the folding unit includes a rear folding part that folds a rear lower flap of the lower flaps of the box; A front folding part that folds a front lower flap among the lower flaps of the box; Consists of; a pair of side folding portions that fold the lower flaps on both sides of the lower flaps of the box.

Here, the rear folding part comprises a cylinder installed on the plate; It is rotatably installed at the lower end of the plate, is connected to the rod of the cylinder and rotates forward when the rod advances to fold the rear lower flap of the box; consists of a folding plate.

In addition, the front folding part and a bracket installed on the frame; A rotation shaft installed on the upper end of the bracket; A cylinder installed on the bracket; A rotating body that penetrates the rotation shaft and is rotatably connected to the rod end of the cylinder, and rotates about the rotation axis when the rod of the cylinder moves forward and backward; Consists of; rollers that are installed on both sides of the rotating body and fold the front lower flaps among the lower flaps of the box entering.

And, the lateral folding part and a bracket installed on the frame; A cylinder installed on the bracket; A folding plate that is rotatably installed on the bracket and connected to the rod of the cylinder to rotate toward the box when the rod advances to fold the lower flap on the side.

In addition, a support bar is installed on the frame, a pressure block moving along the support bar is installed on the lower side of the transfer conveyor, and a support block for supporting the elastic spring is installed between the pressure block and the transfer conveyor. The distance between the transfer conveyors is adjusted according to the size of the box.

In addition, the frame is provided with a detection sensor that detects the presence or absence of boxes loaded on the plurality of loading tables.

The multi-row boxer of the present invention constructed as described above can be made into a box shape by loading boxes of various sizes on a plurality of racks and then pulling out the boxes of the required size, so it is not only easy to pack various types of products, but also packaging. When replacing the product, there is an advantage of minimizing the installation space of the equipment, as it is not necessary to replace the box at that time.

1 is a perspective view showing a multi-row box according to the present invention.
Figure 2 is a view from above the multi-row box according to the present invention.
3 and 4 are diagrams showing a box supply unit of a multi-row box according to the present invention.
5 and 6 are views showing a state in which a flat box is formed by a forming unit of a multi-row box according to the present invention.
7 is a view showing a forming unit and a rear folding portion of the folding unit of the multi-row box according to the present invention.
8 is a view showing the installation position of the detection sensor of the multi-row box according to the present invention.
9 is a view showing a side folding part of the conveying conveyor and the folding unit of the multi-row box according to the present invention.
10 is a view showing the folding unit of the multi-row box according to the present invention.
11 is a view showing a side folding part of the folding unit of the multi-row box according to the present invention.
12 is a view showing a configuration to enable the interval adjustment between a pair of conveying conveyor in the multi-row box according to the present invention.

Hereinafter, an embodiment of a multi-row box according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a multi-row boxer according to the present invention, FIG. 2 is a view from above of a multi-row boxer according to the present invention, and FIGS. 3 and 4 are views showing a box supply unit of a multi-row boxer according to the present invention. .

5 and 6 are diagrams showing a state in which a flat box is formed by the forming unit of the multi-row box box according to the present invention, and FIG. 7 is a rear folding of the forming unit and the folding unit of the multi-row box box according to the present invention. Fig. 8 is a diagram showing the installation position of the detection sensor of the multi-row box according to the present invention.

In addition, Figure 9 is a diagram showing a side folding unit of the transport conveyor and the folding unit of the multi-row box box according to the present invention, Figure 10 is a diagram showing the folding unit of the multi-row box box according to the present invention, Figure 11 is It is a diagram showing the side folding part of the folding unit of the multi-row boxer according to the present invention, and FIG. 12 is a diagram showing a configuration that enables the interval adjustment between a pair of transfer conveyors in the multi-row boxer according to the present invention.

The multi-row boxer according to the present invention includes a frame 100, a plurality of loading platforms 200 installed on the frame 100 to load a plurality of boxes B of different sizes, and the loading platform 200 By the box supply unit 300 sequentially supplying the box (B), the shuttle 400 moving in front of the plurality of loading platforms 200 along the frame 100, and the box supply unit 300 A forming unit 500 that unfolds in a three-dimensional form by drawing out the supplied boxes (B) one by one, a folding unit 600 that folds the lower flap of the box (B) spread by the forming unit 500, and a folded box ( A taping unit 700 for tapping the lower flap of B) and a transfer conveyor 800 for transferring the box B on which the lower flap taping of the box B is completed.

The frame 100 is a part constituting the framework of the present invention, and a transparent window 900 is installed therein so that the inside can be seen from the outside and foreign matters or the like cannot be introduced into the boxing process.

A plurality of the mounting tables 200 are provided, and the tip portions of the multiple mounting tables 200 are respectively connected to the frame 100 to be installed in a plurality of rows on the frame 100. In each of these loading tables 200, a plurality of boxes (B) of different sizes are separately stacked for each size in a flat folded state.

Therefore, a small sized box (B) is loaded on the first loading platform (200), a medium sized box (B) is loaded on the second loading platform (200), and a large size is placed on the third loading platform (200). Boxes of various sizes can be separately loaded by size on each loading table 200 in the same manner as the box (B) of.

The box supply unit 300 includes a cylinder 310, a sprocket 320 connected to the rod 311 of the cylinder 310, a transfer chain 330 installed to surround the sprocket 320, and It is configured to include a pusher 340 installed movably along the mounting table 200.

The cylinder 310 is installed on one side of the mounting table 200.

The sprocket 320 is dynamically connected to the rod 311 of the cylinder 310 and rotates when the rod 311 moves forward and backward. These sprockets 320 are installed one by one on the front side and the rear side of the mounting table 200, and there is no problem in power transmission even if the cylinder 310 is connected only to the sprocket 320 on the front side.

The transfer chain 330 is installed to surround a pair of sprockets 320 installed on the mounting table 200 and rotates together when the sprockets 320 rotate. This transfer chain 330 supports the box (B) loaded on the mounting table 200 and transfers the box (B) one by one forward when the sprocket 320 rotates.

The pusher 340 facilitates the supply of the box B by pushing the box B loaded on the mounting table 200 from the rear to the front.

This pusher 340 is composed of a slider 341, a pressing table 342 rotatably installed on the slider 341, and an arm 343 connecting the slider 341 and the pressing table 342 do.

The slider 341 moves along the mounting table 200. The slider 341 is connected to a separate power source such as a motor or a cylinder, and moves forward little by little each time the box B is pulled out from the mounting table 200 one by one.

The pressurizing table 342 is connected to the slider 341 so as to be rotatable in the vertical direction and is in contact with the rear surface of the box B.

The arm 343 prevents the pressing table 342 from rotating more than a certain angle.

The shuttle 400 moves from the front of the mounting table 200 along the rail 110 installed elongated on the side of the frame 100.

The forming unit 500 is installed on the shuttle 400 and moves from the front of the loading platform 200 along the shuttle 400. The forming unit 500 expands the box (B) vertically loaded on the mounting table 200 in a flat pressed state in a three-dimensional shape of a quadrangular column with open top and bottom surfaces.

In more detail, the forming unit 500 includes a rotation shaft 510, a rotation cylinder 520 to which a rod 521 is connected to the rotation shaft 510, and a bracket installed on the rotation shaft 510. 530, a forward and backward cylinder 540 installed on the bracket 530, a plate 550 connected to the forward and backward cylinder 540, and an adsorption pad 560 installed on the plate 550 And, it is configured to include an inhaler 570 connected to the adsorption pad 560.

The rotation shaft 510 is rotatably installed on the shuttle 400.

The rotation cylinder 520 is connected to the rotation shaft 510 to rotate the rotation shaft 510 when the rod 521 moves forward and backward. That is, when the rod 521 advances from the rotation cylinder 520, the rotation shaft 510 rotates in one direction, and when the rod 521 retreats into the rotation cylinder 520, the rotation shaft 510 rotates in the other direction. .

The bracket 530 has a shape similar to the Hangul'b' and rotates together when the rotation shaft 510 rotates. That is, according to the operation of the rotation cylinder 520, the bracket 530 is rotated at an angle of 90 degrees.

The forward and backward cylinder 540 moves the plate 550 forward and backward.

The plate 550 is installed on the rod 541 of the forward and backward cylinder 540 and moves forward and backward toward the box B. That is, when the rod 541 of the forward and backward cylinder 540 advances, the plate 550 approaches the box B, and when the rod 541 moves backward, the plate 550 moves away from the box B side.

The adsorption pad 560 is installed on the plate 550 to adsorb the side edge of the box B. In addition, the adsorption pad 560 adsorbs the surface of the box B vertically erected in a flat pressed state, and at this time adsorbs one part eccentric from the center of the box B toward the rear. When the plate 550 rotates and faces forward in the state of being adsorbed in this way, the box B takes a shape similar to the shape of a quadrilateral column with open top and bottom, and when the plate 550 continues to rotate and rotates at an angle of 90 degrees, As one side of the box (B) comes into contact with the support 120 installed on the frame 100, it takes the form of a complete quadrangular column with the upper and lower surfaces open.

The inhaler 570 provides suction power to the suction pad 560. Since the adsorption pad 560 alone may not be strongly attached to the outer surface of the box (B), the suction pressure is provided through the inhaler 570 so that the adsorption pad 560 can be well attached to the surface of the box (B).

On the other hand, when the box (B) in the pressed state loaded on the mounting table 200 is adsorbed by the adsorption pad 560, it comes out as if passing by the support member 191 installed on the frame 100. This support member 191 may be in the form of a rod or a brush, and it is located close to the incision line between the upper flaps of the box (B) and serves to slightly support the upper side of the loaded box (B), and at the same time, the box When (B) changes to a quadrangular column shape, it plays a role of helping the foaming become easier.

The folding unit 600 includes a rear folding part 610 that folds the rear lower flap B1 among the lower flaps of the box B, and the front folding the front lower flap B2 among the lower flaps of the box B. It is composed of a folding part 620 and a pair of lateral folding parts 630 that fold the lower flaps B3 on both sides of the lower flaps of the box B.

Box (B) generally has a total of four lower flaps, one at the front and rear and one at both sides. Among these lower flaps, the rear lower flap (B1) is the rear folding portion 610, the front lower flap (B2) is the front folding portion 620, and the lower flaps (B3) on both sides are the side folding portions 630. Is to be folded.

The rear folding part 610 includes a cylinder 611 and a folding plate 612 connected to the rod 611a of the cylinder 611.

The cylinder 611 is installed on the rear surface of the plate 550 in the vertical direction.

The folding plate 612 is rotatably installed at the lower end of the plate 550 through a hinge. This folding plate 612 is connected to the rod 611a of the cylinder 611 and rotates forward when the rod 611a advances to fold the rear lower flap B1 of the box B.

The front folding part 620 includes a bracket 621, a rotation shaft 622 installed on the bracket 621, a cylinder 623 installed on the bracket 621, and connected to the cylinder 623. It consists of a rotating body 624 and a roller 625 installed on the rotating body 624.

The bracket 621 is installed on the frame 100.

The rotation shaft 622 is rotatably installed on the upper end of the bracket 621, and bearings are installed at both ends to reduce friction during rotation.

The cylinder 623 is connected to the rotating body 624 through the rod 623a passing through the upper surface of the bracket 621.

The rotating body 624 is penetrated by the rotating shaft 622 and its end is rotatably connected to the end of the rod 623a of the cylinder 623. Therefore, the rod 623a of the cylinder 623 rotates about the rotation shaft 622 when moving forward and backward.

The rollers 625 are rotatably installed on both sides of the rotating body 624 to fold the front lower flaps B2 among the lower flaps of the entering box B. The rear lower flap B1 is folded by the rear folding part 610, and the front lower flap B2 is folded by the front folding part 620.

The lateral folding part 630 includes a bracket 631, a cylinder 632 installed on the bracket 631, and a folding plate 633 rotatably installed on the bracket 631.

The bracket 631 is installed on the frame 100. More precisely, a bracket 631 is installed on the lower side of the transfer conveyor 800 to be described later.

The folding plate 633 is rotatably installed at the side end of the bracket 631 through a hinge. This folding plate 633 is connected to the rod 632a of the cylinder 632 and rotates toward the box B when the rod 632a advances to fold the lower flap B3 on the side.

The taping unit 700 attaches the lower flaps B2 and B1 at the front and rear, and the bottom surfaces of the lower flaps B3 at both sides that are folded outside the front and rear lower flaps B2 and B1 with a tape. Since such taping unit 700 is known in various forms on the market, a description thereof will be omitted here.

On the other hand, the upper side of the frame 100 is provided with a pressure plate 140 that moves up and down by the cylinder 130, and when the bottoms of the lower flaps B3 on both sides are attached with tape, the upper side of the box B is pressed to Prevents the box (B) from being lifted upwards by taping the flaps.

The transfer conveyor 800 is arranged in a pair, one on each side of the frame 100, in contact with both sides of the box (B). Accordingly, while the transfer conveyor 800 rotates, the lower flap is rotated in contact with both sides of the box B where the taping is completed, and the box B is transferred by this rotational force.

Here, a guide plate 190 is provided immediately in front between the pair of transfer conveyors 800. The guide plate 190 serves to guide the box B in which the rear lower flap B1 and the front lower flap B2 are folded between the transfer conveyor 800 by being formed to be inclined. When the box (B) rises on the guide plate 190, folding of the lateral lower flap (B3) is completed by the lateral folding portion 630.

On the other hand, in the present invention, since the box (B) of various sizes is taped and transported, the spacing of a pair of transport conveyors in contact with both sides of the box (B) must be actively adjusted according to the size of the box (B).

To this end, in the present invention, a support rod 150 is installed on the frame 100, a pressure block 160 is installed on the support rod 150, and an elastic spring 170 and a support block 180 are installed.

The support rod 150 is installed long in the horizontal direction on the frame 100 below the transfer conveyor 800.

The pressing block 160 is disposed under the transfer conveyor 800 and is penetrated by the support rod 150 and moves along the support rod 150.

The elastic spring 170 is installed to surround the support bar 150.

The support block 180 supports the elastic spring 170 between the pressure block 160 and the pressure block 160. In addition, the support block 180 is installed to be fixed to a specific point of the support rod 150, and the pressure block 160 is installed to be fixed to a specific point on the lower side of the transfer conveyor 800, and the support block 180 and An elastic spring 170 is positioned between the pressing blocks 160. Accordingly, the elastic spring 170 is contracted or elongated according to the size of the transported box B, so that the distance between the transport conveyors 800 is adjusted. Thereby, the box (B) of various sizes can be transferred to the transfer conveyor (800).

In addition, a detection sensor S is installed on the frame 100.

The detection sensor (S) is for detecting the presence or absence of the box (B) loaded on the plurality of mounting platform 200, a plurality of the frame 100 is installed to correspond to each of the mounting platform 200.

When the barcode of the product to be packaged in the box (B) is input to the control unit (not shown), the control unit selects the appropriate box (B) for packaging the product and commands it to be folded and taped, at this time, the detection sensor (S) Detects the presence or absence of the corresponding box (B) and informs the control unit.

A brief look at the operation process of the multi-row boxer according to the present invention configured as described above is as follows.

First, in a state in which boxes (B) of different sizes are each loaded on a plurality of loading platforms (200), the shuttle (400) moves along the rails (110), and a loading platform ( 200) Stop ahead.

By the operation of the forming unit 500, the bracket 530 and the plate 550 rotate toward the box (B), and the suction pad 560 adsorbs one side of the box (B) and then rotates 90 degrees in the opposite direction. . In this case, the box (B), which was pressed flat, becomes a square column shape with open top and bottom.

In this state, the folding plate 612 of the rear folding part 610 rotates upward to fold the rear lower flap B1 among the lower flaps of the box B.

After that, the shuttle 400 advances and transfers the box B toward the front folding part 620. In the box B, the front lower flap B2 of the lower flaps of the box B is folded by the operation of the front folding part 620.

In that state, when the shuttle 400 advances a little more, the box (B) rises on the guide plate 190 and the lower flaps (B3) of both sides are folded by the lateral folding part (630).

After the entire lower flap of the box (B) is folded in this way, the box (B) is continuously transferred by the transfer conveyor (800), and the taping unit (700) under the transfer conveyor (800) during transfer A portion of the side surface of the box B and the bottom of the side lower flap B3 are taped with a tape.

100: frame 110: rail
120: support 130: cylinder
140: pressure plate 150: support rod
160: pressure block 170: elastic spring
180: support block 190: guide plate
191: support member 200: mounting table
300: box supply unit 310: cylinder
311: rod 320: sprocket
330: conveying chain 340: pusher
341: slider 342: pressure base
343: arm 400: shuttle
500: forming unit 510: rotating shaft
520: rotating cylinder 530: bracket
540: forward and backward cylinder 550: plate
560: suction pad 570: aspirator
600: folding unit 610: rear folding part
611: cylinder 611a: rod
612: folding plate 620: front folding part
621: bracket 622: rotating shaft
623: cylinder 623a: rod
624: rotating body 625: roller
630: side folding part 631: bracket
632: cylinder 632a: rod
633: folding plate 700: taping unit
800: transfer conveyor 900: transparent window
B: Box S: Detection sensor

Claims (11)

A frame 100;
A plurality of racks 200 installed in a plurality of rows on the frame 100 so that a plurality of boxes B of different sizes can be separately stacked for each size in a flat folded state;
A box supply unit 300 for sequentially supplying the boxes B loaded on the mounting table 200;
A shuttle 400 moving in front of the plurality of loading platforms 200 along the frame 100;
A forming unit 500 installed on the shuttle 400 and for drawing out the boxes B supplied by the box supply unit 300 one by one and developing them in a three-dimensional shape;
A folding unit 600 for folding the lower flap of the box B unfolded by the forming unit 500;
A taping unit 700 for taping the lower flap of the folded box (B).
The method according to claim 1,
The box supply unit 300 includes a cylinder 310 installed on the mounting table 200;
A sprocket 320 connected to the rod 311 of the cylinder 310 to rotate when the rod 311 moves forward and backward;
A transfer chain 330 that is installed to surround the sprocket 320 while supporting the box B, and transfers the box B forward when the sprocket 320 rotates; A multi-row boxer comprising: a pusher 340 installed to be movable along the mounting table 200 and pushing the loaded box B from the rear to the front.
The method according to claim 1,
The forming unit 500 includes a rotation shaft 510 rotatably installed on the shuttle 400;
A rotation cylinder 520 connected to the rotation shaft 510 to rotate the rotation shaft 510 when the rod 521 moves forward and backward;
A bracket 30 installed on the rotation shaft 510 and rotating together with the rotation shaft 510;
A forward and backward cylinder 540 installed on the bracket 530;
A plate 550 installed on the rod 541 of the forward and backward cylinder 540 to move forward and backward toward the box B;
An adsorption pad (560) installed on the plate (550) for adsorbing a side edge portion of the box (B).
The method of claim 3,
The forming unit 500 further comprises an inhaler 570 connected to the adsorption pad 560 to provide a suction force to the adsorption pad 560.
The method of claim 3,
The folding unit 600 includes a rear folding part 610 for folding a rear lower flap B1 among the lower flaps of the box B;
A front folding part 620 for folding the front lower flap B2 among the lower flaps of the box B;
A multi-row boxer comprising: a pair of lateral folding portions 630 for folding the lower flaps B3 on both sides of the lower flaps of the box B.
The method of claim 5,
The rear folding part 610 includes a cylinder 611 installed on the plate 550;
It is rotatably installed at the lower end of the plate 550, is connected to the rod 611a of the cylinder 611, and rotates forward when the rod 611a moves forward, and the lower flap B1 on the rear side of the box (B) ) Folding a folding plate 612; multi-row box box, characterized in that consisting of.
The method of claim 5,
The front folding part 620 includes a bracket 621 installed on the frame 100;
A rotation shaft 622 installed on the upper end of the bracket 621;
A cylinder 623 installed on the bracket 621;
It penetrates through the rotation shaft 622 and is rotatably connected to the end of the rod 623a of the cylinder 623, so that the rod 623a of the cylinder 623 rotates around the rotation shaft 622 when it moves forward and backward. A body 624;
And a roller 625 that folds the front lower flap (B2) among the lower flaps of the box (B) that is installed on both sides of the rotating body (624).
The method of claim 5,
The lateral folding part 630 includes a bracket 631 installed on the frame 100;
A cylinder 632 installed on the bracket 631;
It is rotatably installed on the bracket 632, is connected to the rod 632a of the cylinder 632, and rotates toward the box B when the rod 632a advances to fold the lower flap B3 on the side. Folding plate 633; Multi-row box box, characterized in that consisting of.
The method according to claim 1,
A multi-row material further comprising a pair of transfer conveyors 800 disposed on both sides of the frame 100 to transfer the box B where the taping of the lower flap is completed by contacting both sides of the box B. Hamgi.
The method of claim 9,
A support rod 150 is installed in the frame 100, a pressing block 160 moving along the support rod 150 is installed at a lower side of the transfer conveyor 800, and the pressing block 160 is installed on the support rod 150. 160) and the support block 180 for supporting the elastic spring 170 is installed, and the distance between the transfer conveyor 800 is adjusted according to the size of the transferred box (B). Boxing machine.
The method according to claim 1,
A multi-row box box, characterized in that a detection sensor (S) for detecting the presence or absence of a box (B) loaded on the plurality of loading tables (200) is installed in the frame (100).

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