JP2021075306A - Carton-making machine - Google Patents

Abstract

To improve efficiency of box-making work by increasing efficiency of box-opening operation that opens a flat box material into a square cylindrical shape.SOLUTION: To a subsequent stage of a magazine part 12, an opening preparation part 13a for preparing to open a box material, and an opening execution part 13b for executing operation of opening the box material are provided in this order.The opening preparation part 13a is provided with an alignment mechanism 42 for aligning the box material in a fixed position, an erection mechanism 44 for erecting the box material with the tip of the flap of the box material down, and a first suction mechanism 49 provided in the erection mechanism 4 to suck the lower surface of the box material. The opening execution part 13b includes a second suction mechanism 64 in an erection posture that sucks a surface of the box material opposite to a lower surface, and a rotation mechanism 75 that rotates in two directions the posture in which the second suction mechanism 64 waits for the box material to erect, and in which the box material is opened by rotating 90 degrees from the direction of waiting around a vertical direction and pulling the surface of the box material opposite to the lower surface.SELECTED DRAWING: Figure 5

Description

The present invention relates to a box making machine that opens a flat box material before assembly and folds a flap at the bottom.

As the box making machine as described above, there is one disclosed in Patent Document 1 below.

This box making machine has a structure that opens the box material as follows. First, the bottom of the box materials stacked flat in the magazine section is sent out onto the table, and the top surface suction pad attached to the arm vacuum sucks the top surface of the box material, and the bottom surface suction pad is moved from the lowered position. It is raised and the lower surface of the box material is vacuum-adsorbed. Subsequently, the arm having the upper surface suction pad is turned upright by about 90 degrees to raise the box material and open the box in a sideways state. That is, the box material is picked up by the arm and sucked by the upper surface suction pad to cause the box material to be opened.

Therefore, when opening the box, the arm must be tilted and then stood up, which causes a stagnation in the opening operation.

Japanese Unexamined Patent Publication No. 9-52295

Therefore, the main subject of the present invention is to enable efficient box-making work.

The means for that is a box making machine having a magazine section for flatly stacking flat box materials before assembly, opening the box materials supplied one by one from the magazine section into a tubular shape, and then folding the bottom flap. The opening preparation section for preparing to open the box material and the opening execution section for executing the operation of opening the box material are provided in this order in the rear stage of the magazine section, and the corners of the box material are provided in the opening preparation section. There are an alignment mechanism that aligns the box material with the fixed position, an upright mechanism that raises the box material with the tip of the flap of the box material down, and a first suction mechanism that is provided in the upright mechanism and sucks the lower surface of the box material. A second suction mechanism in an upright posture that sucks a surface of the box material that is upright by the upright mechanism and is opposite to the lower surface, and the second suction mechanism are upright by the upright mechanism. A rotation mechanism is provided that rotates 90 degrees from the waiting direction around the vertical direction and pulls the surface of the box material opposite to the lower surface to open the box material. It is a box making machine.

In this configuration, the box material supplied from the magazine section to the opening preparation section is aligned by the alignment mechanism and is erected by the standing mechanism. The upright box material is adsorbed and held by the first adsorption mechanism. At this time, in the opening execution unit, the second suction mechanism causes the box material to stand by in a posture of waiting by the rotation mechanism in advance, so that the box material standing up by the standing mechanism is immediately sucked. Subsequently, the rotating mechanism rotates the second suction mechanism in a posture in which the box material is opened while the first suction means is sucking. This rotation opens the box material.

According to the present invention, since the box opening operation is divided by providing the opening preparation unit and the opening execution unit, the operation can be efficiently opened without any stagnation.

Perspective view of the box making machine. The plan view which shows the schematic structure of the main part of a box making machine. A perspective view of a main part of the opening preparation part. Schematic diagram of the main part of the box making machine. Top view of the main part of the box making machine. The perspective view of the main part of the open execution part. The cross-sectional view of the second suction mechanism. The perspective view which shows a part of the box making process. The perspective view which shows a part of the box making process. The plan view which shows a part of the box making process. Schematic structure of the box making machine according to another example.

An embodiment for carrying out the present invention will be described below with reference to the drawings.

FIG. 1 shows a perspective view of the box making machine 11, and FIG. 2 shows a plan view of the schematic structure of the main part thereof.

The box-making machine 11 is a device for opening a box material into a square cylinder, folding a bottom flap, and then sealing the box with tape, and is suitably used for box-making of a so-called A-type corrugated cardboard box.

The box making machine 11 is a main body that opens a magazine portion 12 for flatly stacking flat box materials before assembly and a box material supplied one by one from the magazine portion 12 and folds a bottom flap to seal the box material. It has a part 13.

The magazine portion 12 is stacked flat with the sides of the box material having the upper and lower flaps (lid flap and bottom flap) facing both sides with respect to the supply direction (white arrow X1). A pair of belt conveyors 12a are provided at the lower part of the magazine portion 12, and a pair of guide plates 12b adjusted according to the size of the box material are provided on both sides of the belt conveyor 12a. At the lower part of the guide plate 12b, a separate dropping means (not shown) for dropping the lowest box material among the flatly stacked box materials is provided, and the dropped box is provided between the belt conveyors 12a. It has a feeding means 12c for feeding the material.

Two such magazine units 12 are provided so that two types of box materials can be automatically produced.

The main body 13 is provided after the magazine 12. The main body 13 has an opening preparation portion 13a that prepares for opening the box material, an opening execution portion 13b that executes an operation of opening the box material, a flap folding portion 13c that folds the bottom flap, and a tape on the bottom flap. The tape pasting portion 13d to be pasted is arranged in this order.

The opening preparation section 13a is a portion that receives the box material supplied from the magazine section 12, and the opening execution section 13b is provided in a horizontal direction adjacent to the opening preparation section 13a and in a direction perpendicular to the supply direction from the magazine section 12. Has been done. Each part after the opening execution part 13b is arranged in a direction orthogonal to the direction in which the opening preparation part 13a and the opening execution part 13b are lined up, that is, parallel to the supply direction of the box material from the magazine part 12. To add to the flow of the box material with reference to FIGS. 1 and 2, the box material first moves from the magazine portion 12 in the direction of the white arrow X1. Subsequently, the box material supplied to the opening preparation unit 13a changes the direction by 90 degrees in the direction of the white arrow X2 and moves in the direction of the opening execution unit 13b, and then moves by changing the direction by 90 degrees in the direction of the white arrow X3. Will be done.

The two magazine portions 12 described above are arranged at opposite positions sandwiching the opening preparation portion 13a in parallel with the direction in which the flap folding portion 13c and the tape attaching portion 13d are lined up. Therefore, the supply directions X1 of the box material from the two magazine portions 12 face each other.

FIG. 3 shows a perspective view of a main part of the opening preparation part 13a, and FIG. 4 shows a schematic configuration of a main part of the box making machine 11.

The opening preparation portion 13a has a substantially square frame-shaped stage frame 31 formed in a size sufficient to receive the box material.

A plurality of rotating rollers 32 are arranged in parallel in the stage frame 31. The roller 32 extends horizontally, and its longitudinal direction is orthogonal to the supply direction of the box material from the magazine portion 12.

The roller 32 is connected to the roller motor 33 and rotates in one direction. The rotation direction of the roller 32 is one of the two magazine portions 12, specifically, the direction opposite to the direction in which the flap folding portion 13c extends from the opening execution portion 13b (left side in FIGS. 2, 4, and 5). ..

Further, on the roller 32, a width adjusting bar 34 that moves in the direction of the opening execution portion 13b along the longitudinal direction of the roller 32 is provided. The width adjusting bar 34 is formed to have an appropriate length in the supply direction of the box material from the magazine portion 12, and is connected to the air cylinder 35. As a result, the width adjusting bar 34 reciprocates from a fixed position on the side opposite to the opening execution portion 13b side of the stage frame 31 toward the opening execution portion 13b side by a distance according to the size of the box material.

Stoppers 36, 37, and 38 that move up and down with respect to the stage frame 31 are provided at three positions on the stage frame 31, one on the side of the two magazines 12 and the other on the side of the opening execution unit 13b. The stopper 36 provided on the side corresponding to the rotation direction of the roller 32, that is, on the left side in FIGS. 2, 4, and 5, is the reference side stopper 36, and the stopper 37 provided on the opposite side of the reference side stopper 36 is opposite. The reference side stopper 37. The stopper 38 provided on the opening execution portion 13b side is the standing starting point side stopper 38.

The reference side stopper 36, the non-reference side stopper 37, and the standing starting point side stopper 38 are configured to have an angle member at the upper end, and are moved up and down by air cylinders 39, 40, and 41.

The roller 32 that rotates in the direction having the reference side stopper 36, the width adjusting bar 34 that reciprocates toward the standing start point side stopper 38, and the three stoppers 36, 37, 38 determine the corners of the supplied box material. The alignment mechanism 42 for aligning with the position is configured. The fixed position is the intersection of the lines connecting the regulated positions of the reference side stopper 36 and the standing starting point side stopper 38 (see the virtual line in FIG. 5. In FIG. 5, W1 indicates a large box material, and W2 is It shows a box material smaller than the W1 box material).

Further, the corners of the box materials W1 and W2 aligned at the fixed positions are the corners of the flaps, and the flaps may be either lid flaps or bottom flaps, but in this example, they are the corners of the bottom flaps.

A vertical movement motor 43 composed of a servomotor is connected to the stage frame 31 via a chain or a gear (not shown), and the stage frame 31 can move up and down by a predetermined height by driving the vertical movement motor 43.

The box material aligned by the alignment mechanism 42 on the inside of the stage frame 31 and below the roller 32 is placed in a posture in which the tip of the flap in contact with the standing start point side stopper 38 in the box body is down. An erecting mechanism 44 for erecting the box material is provided.

The standing mechanism 44 is provided at two positions inside the stage frame 31: a position closer to the reference side stopper 36 direction and a position closer to the non-reference side stopper 37 direction. These standing mechanisms 44 have standing tilt bars 45 extending along the longitudinal direction of the rollers 32 at two positions sandwiching the rollers 32.

Specifically, the upright tilt bar 45 is attached to a support shaft 46 provided at the end of the stage frame 31 in the direction of the upright start point side stopper 38, and is provided by an air cylinder 47 provided under the roller 32. It is a structure that rotates and tilts upright.

The standing tilt bar 45 is normally tilted with respect to the longitudinal direction of the roller 32. That is, since the support shaft 46 is located below the roller 32, the standing tilt bar 45 extends upward toward the tip end side. However, the tip of the upright tilt bar 45 is set below the upper surface position of the roller 32.

The length of the upright tilt bar 45 is the length required to carry out the standing of the box material, and has the base end member 45a and the tip end member 45b in the longitudinal direction. The tip member 45b is set to have a larger inclination angle toward the top than the base end member 45a, in other words, a larger elevation angle.

The base end member 45a has two suction pads 48 arranged on the upper surface along the longitudinal direction. These suction pads 48 are first suction mechanisms 49 provided in the standing mechanism 44 to suck the lower surface of the box material.

Here, the lower surface of the box material is the lower surface of the box material that is flat and spreads in the horizontal direction supplied to the opening preparation portion 13a, and is located on the opening preparation portion 13a side in the posture of standing up by the standing mechanism 44. It is a surface that stands up vertically.

In addition to the suction pad 48, a regulation protrusion 51 is formed on the upright tilt bar 45 at a position close to the reference side stopper 36 in the upright mechanism 44 at a position close to the reference side stopper 36. The forming position of the regulation protrusion 51 is a position on the tip end side of the base end member 45a with respect to the suction pad 48.

As shown in FIG. 4, a vacuum generator 52 is connected to each suction pad 48.

The opening execution unit 13b is provided with a moving mechanism 55. The moving mechanism 55 has a base 56 that reciprocates in one direction, and a support 57 that is supported by the base 56 and reciprocates in a direction orthogonal to the moving direction of the base 56.

The base 56 moves linearly in the direction connecting the opening execution portion 13bb and the flap folding portion 13c, and moves along the guide rod 59 by the moving motor 58 as shown in FIGS. 2 and 5. It is configured.

The support base 57 extends toward the opening preparation portion 13a and is formed on the base 56 at the tip of the advancing / retreating portion 62 that linearly moves in the direction connecting the opening preparation portion 13a and the opening execution portion 13b by the servomotor 61. There is.

That is, the support base 57 reciprocates linearly in the direction of approaching and separating from the opening preparation portion 13a, and the base 56 reciprocates linearly in the direction orthogonal to the direction of approaching and separating from the opening preparation portion 13a. To do.

Then, as shown in FIG. 6, the support base 57 is provided with a support column 63, and a surface opposite to the above-mentioned lower surface of the box material erected by the standing mechanism 44 is attracted to the upper portion of the support column 63. A second suction mechanism 64 in an upright posture is provided.

The second suction mechanism 64 is configured by arranging a plurality of suction pads 65, 66 in this example on the same plane. The suction pads 65 and 66 are located at positions slightly separated from the first suction pads in the horizontal direction with the four first suction pad groups 64a arranged at substantially equal intervals by two on the top, bottom, left and right at the front position of the support column 63. It is a group of two second suction pads 64b arranged one above the other. The second suction pad group 64b is formed in a direction away from the above-mentioned fixed position of the opening preparation portion 13a than the first suction pad group 64a.

The first suction pad group 64a and the second suction pad group 64b are connected to separate vacuum generators 67 and 68 as shown in FIG.

Further, the suction pads 65 and 66 are contracted and deformed in the thickness direction by performing suction, and the holding plate 71 is provided together with the suction pads 65 and 66.

As shown in FIG. 7, the holding plate 71 has a flat tip surface 71a at a position recessed from the tip positions of the suction pads 65 and 66 as suction cups for sucking the box material. Specifically, the holding plate 71 has a circular hole 72 larger than the suction pads 65 and 66 on the tip surface 71a, and the suction pads 65 and 66 are projected into the holes 72 so that the tip positions of the suction pads 65 and 66 project from the holes 72. It is positioned. The difference between the tip positions of the suction pads 65 and 66 and the tip surface 71a of the holding plate 71 is that the suction surface of the box material is stably supported by the tip surface 71a of the holding plate 71 when the box material W is sucked. Is set to.

The holding plate 71 is provided on each of the upper three suction pads 65 and 66 and the lower three suction pads 65 and 66 among the suction pads 65 and 66 arranged in two upper and lower stages. The two upper and lower holding plates 71 each have a bent portion 71b that bends vertically in an L shape, and the strength is improved in combination with the holding plates 71 being separately attached vertically.

At the lower part of the support column 63, a rotation mechanism 75 for changing the direction of the second suction mechanism 64 is provided as shown in FIG. That is, the second suction mechanism 64 is supported via the rotation mechanism 75, and the rotation mechanism 75 rotates in two postures different by 90 degrees about the vertical direction by the air cylinder 76. The two postures are a posture of waiting for the box material in which the suction pads 65 and 66 of the second suction mechanism 64 are erected by the standing mechanism 44, and a posture of rotating 90 degrees from the waiting posture and pulling the surface of the box material opposite to the lower surface. It is a posture to open the box material. The latter posture of opening the box material is, in other words, a posture facing the direction in which the flap folding portion 13c is held.

By the moving mechanism 55 and the rotating mechanism 75, the second suction mechanism 64 can move from the initial position P1 shown by the solid line in FIG. 5 to a plurality of positions as shown by the virtual line. One of them is the position P2 which is rotated 90 degrees from the initial position P1 and faces the opening preparation portion 13a. In addition, the waiting position P3 moved from this position P2 toward the opening preparation unit 13a, the opening position P4 rotated 90 degrees in the opposite direction to the previous position at the waiting position P3, and the opening preparation unit 13a in this state. There is a position P5 that moves away from the first suction pad group 64a and faces the flap folding portion 13c.

Further, as shown in FIG. 6, a folding mechanism 77 for folding the inner flap is provided at a position in the middle portion of the support column 63 in the longitudinal direction and below the second suction mechanism 64.

The folding mechanism 77 normally has a vertical posture as shown by a solid line in FIG. 6, and has a rectangular folding plate 78 as a whole. The upper end of the folding plate 78 in the normal state is pivotally attached to the support column 63, and is rotatably mounted by the air cylinder 79, so that the folding plate 78 can rotate to raise the tip located below in the normal state. It is configured. Due to the rotation, the folding plate 78 rises horizontally as shown by the virtual line and faces in the same direction as the tips of the suction pads 65 and 66.

The flap folding portion 13c located at the rear stage of the opening execution portion 13b folds the flap of the box material by relative movement. In the flap folding portion 13c of this example, three flaps are automatically folded by moving the opened box material.

As shown in FIGS. 1 and 2, the flap folding portion 13c includes an inner flap folding plate 81 extending horizontally like the raised folding plate 78, and a rod-shaped folding guide located on both the left and right sides of the inner flap folding plate 81. It has 82. The folding guide 82 is formed in a shape that folds the outer flap that has moved diagonally outward and downward.

In the subsequent stage from the flap folding portion 13c, a transport means 83 for exerting a transport force on both side surfaces of the box material for transporting the pushed box material is provided. The transport means 83 is composed of a belt conveyor, and the interval can be adjusted according to the size of the box material.

The tape pasting portion 13d located at the rear stage of the flap folding portion 13c is configured by arranging the existing tape pasting machine 84.

As shown in FIG. 4, the actuators and the like of the above-mentioned parts are controlled together with the magazine control drive unit 85 which sets the type of the box material in the magazine unit 12 and discharges the box material from the magazine unit 12, the transport means 83, and the like. It is driven and controlled by 86.

The box-making machine 11 configured as described above performs box-making by the control unit 86 as follows.

First, the box material is put into the magazine unit 12, and the type and size of the box material and the box-making order of which magazine unit 12 box material is processed first are set. The roller 32 in the opening preparation section 13a of the main body 13 is rotated by the drive of the box making machine 11, and the box material is sequentially supplied from the magazine section 12 toward the opening preparation section 13a.

As shown by the virtual line in FIG. 5, the corners of the supplied box material W1 and the small box material W2 are positioned at fixed positions by the rotation of the roller 32 and the movement of the width adjusting bar 34.

In order to perform such positioning, the stoppers 36, 37, and 38 that were lowered when the box material was supplied are raised. Further, the alignment is performed while lowering the stage frame 31.

Subsequently, the standing tilt bar 45 of the standing mechanism 44 rotates in the standing direction with respect to the box material W in the horizontal posture as shown by the solid line in FIG. 8 (a), and is shown in FIG. 8 (b). The box material is placed in a vertical position and detected by a sensor (not shown). At this time, the box material W is adsorbed by the first adsorption mechanism 49.

Prior to this standing up, the second suction mechanism 64 of the opening execution unit 13b stands by at the waiting position as shown in FIG. 8A.

When the box material stands up, the first suction pad group 64a of the second suction mechanism 64, or the first suction pad group 64a and the second suction pad group 64b, sucks the surface of the box material W opposite to the lower surface. In this state, the rotation mechanism 75 is immediately driven while adsorbing by the first adsorption mechanism 49 to rotate the second adsorption mechanism 64 by 90 degrees (see the arrow in FIG. 8B). Then, as shown in FIG. 9A, the box material W opens, and openings are obtained in the vertical direction.

After that, as shown by an arrow in FIG. 9A, the first suction mechanism 49 releases the box material W, the standing tilt bar 45 collapses, and the moving mechanism 55 prepares the second suction mechanism 64 to open. It moves in a direction away from the portion 13a. The movement is performed to a position where the first suction pad group 64a of the second suction mechanism 64 faces the flap folding portion 13c.

Synchronously with or after this movement, the folding mechanism 77 is driven to raise the folding plate 78 and bend the inner flap Wa located below at a right angle (see FIG. 9B, FIG. 10). ..

When the tip of the box material W is moved or the inner flap Wa is bent, the second suction mechanism 64 has the holding plate 71, so that the open box material can be supported without shaking. In particular, it is possible to prevent the front side of the box material W, that is, the side opposite to the direction in which the inner flap Wa bent by the folding mechanism 77 hangs down.

Subsequently, as shown by the arrows in FIGS. 9B and 10B, the moving mechanism 55 pushes the second suction mechanism 64 toward the flap folding portion 13c. Also at this time, since the box material W is strongly supported by the second suction mechanism 64 having the holding plate 71, the box material W is strongly held in the correct posture without slackening in the front in the transport direction.

In the box material W that moves relative to the flap folding portion 13c, the inner flap Wb is first bent by the inner flap folding plate 81, and then the left and right outer flaps Wc are sequentially folded by the folding guide 82. After that, the seams of the outer flaps Wc are attached by a tape (not shown) supplied from the tape affixing machine 84, and the sealing is completed.

When the box-making work from the box material put into one magazine unit 12 is completed, the box material is continuously and automatically supplied from another magazine unit 12, and the box-making is performed in the same manner as described above.

As described above, the box making machine 11 divides the process of opening the box material into two parts, an opening preparation part 13a and an opening execution part 13b, and divides the two shafts of the standing mechanism 44 and the rotating mechanism 75 into two parts. It is provided so that the opening preparation unit 13a and the opening execution unit 13b are independently driven and cooperate with each other at the moment of opening. As a result, it is possible to eliminate the delay in operation. Therefore, the efficiency of the box opening operation can be improved, and more box making work can be performed in a short time.

Moreover, since the box is opened with the flap down, and a folding mechanism 77 for folding the inner flap is provided in the vicinity of the second suction mechanism 64, subsequent flap folding and sealing can be performed in a natural posture without difficulty. , Can be done quickly. From this point as well, the efficiency of box making work can be improved.

Since the flap folding portion 13c has a configuration in which the flap of the box material is folded by relative movement, the box making machine 11 can be simplified.

Further, since the second suction mechanism 64 is provided with the holding plate 71, the opened box material can be held firmly and stably, so that the box opening operation can be performed smoothly and surely, and the flap can be folded accurately. , The occurrence of defects can be eliminated at all.

Further, since a plurality of magazine units 12 are provided so that a plurality of types of box materials can be automatically box-made, efficiency can be improved in this respect as well, and the number of personnel required for the box-making work can be reduced.

The above configuration is a form for carrying out the present invention, and the present invention is not limited to the above-mentioned configuration, and other configurations may be adopted.

Another example will be described below. In this description, the same parts as those described above are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 11 shows an example in which three or more magazine units 12 are provided. In this case, the plurality of magazine units 12 are arranged along the direction in which the opening preparation unit 13a and the opening execution unit 13b are lined up, and are arranged so as to extend from the opening preparation unit 13a toward the side opposite to the opening execution unit 13b. Good. In the case of FIG. 11, four magazine portions 12 are provided, and the magazine portions 12 are arranged in two rows so as to sandwich the opening preparation portion 13a. A belt conveyor 88 is provided between the two rows of magazine portions 12, and the box material is conveyed toward the opening preparation portion 13a.

In addition, the magazine portions 12 may be arranged in a row only on one side of the opening preparation portion 13a.

Also, although not shown, the flaps may be folded into the flaps located above rather than below.

Folding of the flap may be performed by relative movement of the box material or may be forced.

11 ... Box making machine 12 ... Magazine part 13a ... Opening preparation part 13b ... Opening execution part 13c ... Flap folding part 42 ... Alignment mechanism 44 ... Standing mechanism 49 ... First suction mechanism 55 ... Movement mechanism 64 ... Second suction mechanism 71 … Holding plate 75… Rotating mechanism 77… Folding mechanism

Claims (7)

It is a box making machine that has a magazine section for flatly stacking flat box materials before assembly, opens the box materials supplied one by one from the magazine section into a tubular shape, and then folds the bottom flap.
After the magazine section, an opening preparation section for preparing to open the box material and an opening execution section for executing the operation of opening the box material are provided in this order.
The opening preparation portion is provided with an alignment mechanism for aligning the corners of the box material in a fixed position, a standing mechanism for raising the box material with the tip of the flap of the box material facing down, and a box material provided in the standing mechanism. A first suction mechanism is provided to suck the lower surface of the box.
In the opening execution portion, a second suction mechanism in an upright posture that sucks the surface of the box material that is upright by the upright mechanism on the side opposite to the lower surface, and a box material that causes the second suction mechanism to stand up by the upright mechanism. A rotating mechanism is provided that rotates 90 degrees from the waiting direction around the vertical direction and pulls the surface of the box material opposite to the lower surface to open the box material. Box machine. The box-making machine according to claim 1, wherein the opening execution portion is provided with a folding mechanism for folding an inner flap located below or above the second suction mechanism. The box-making machine according to claim 1 or 2, wherein a holding plate having a flat tip surface is formed on the second suction mechanism at a position recessed from the tip position of a suction cup for suction. The box-making machine according to any one of claims 1 to 3, wherein a flap folding portion for folding a flap of a box material by relative movement is provided after the opening execution portion. The second suction mechanism and the rotation mechanism are attached to the opening execution portion in a direction orthogonal to a direction in which the second suction mechanism and the rotation mechanism are approached and separated from the opening preparation portion and a direction in which the second suction mechanism and the rotation mechanism are approached and separated from the opening preparation portion. The box-making machine according to any one of claims 1 to 4, each of which is provided with a moving mechanism that reciprocates linearly. The box-making machine according to any one of claims 1 to 5, wherein a plurality of magazines are provided. According to claim 6, a plurality of the magazine units are arranged along the direction in which the opening preparation unit and the opening execution unit are lined up, and are arranged so as to extend from the opening preparation unit toward the opposite side of the opening execution unit. The described box making machine.

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