JP6996909B2 - Carton assembly equipment - Google Patents

Description

The present invention relates to a carton assembling device.

Various carton assembly devices have been proposed for assembling flatly folded cartons into a square cylinder. Patent Document 1 discloses an example of a conventional carton assembling device. The carton assembling device disclosed in the same document brings the carton into contact with the locking member while holding the side surface portion of the carton by the holding portion as shown in FIG. 9 (a) of the same document. Then, as shown in FIG. 3B, the carton is assembled into a square cylinder by further moving the side surface portion.

Japanese Unexamined Patent Publication No. 09-24623

In the carton assembling device of the above document, the portion where the adjacent side surface portion is folded back is brought into contact with the locking member. Therefore, the folded portion of the carton may be dented or damaged. Further, from the start to the end of the process of assembling the carton, the holding portion only moves downward in the figure. Therefore, there is a concern that the force cannot be sufficiently efficiently transmitted to the carton whose shape gradually changes with assembly. Further, in assembling the carton, there is a problem that the carton is hindered from being sufficiently formed into a square cylinder because a force is generated to return the carton to the folded state.

The present invention has been conceived under the above circumstances, and an object of the present invention is to provide a carton assembling device capable of more efficiently assembling while suppressing damage to the carton.

The carton assembling device provided by the present invention has a pair of first side surface portions and a pair of second side surface portions connected to both ends of the pair of first side surface portions in the width direction, and the first side surface portions are diagonally positioned with each other. A carton that is folded flat by folding a pair of boundaries between one side surface portion and the second side surface portion is assembled so that the pair of first side surface portions and the pair of second side surface portions form a square cylinder. , A holding unit that has a holding portion for holding the first side surface portion and moves the carton to the side facing the first side surface portion, and the carton moved by the holding unit. While pushing the second side surface portion that is flatly connected to the first side surface portion to the side opposite to the side facing the second side surface portion, the first side surface portion is connected to the first side surface portion in the width direction of the first side surface portion. A pressing unit having a pressing portion that moves closer to the surface is provided , and the pressing portion pushes the second side surface portion while the contact point with the second side surface portion is the same in the width direction. It reaches a position where it overlaps the first side surface portion beyond the boundary between the first side surface portion and the second side surface portion, and the contact point between the pressing portion and the second side surface portion is the first side surface portion and the said. A pair of transport arms, which are located on the side where the first side surface portion faces the carton when the boundary with the second side surface portion is crossed, are further provided, and the pair of transport arms is the first side surface portion. It has a shape that is separated from each other in the width direction and extends in parallel with each other, and the angle formed by the pressing portion and the second side surface portion in contact with each other and the first side surface portion and the second side surface portion is an acute angle. It is characterized in that the carton enters between the pair of transport arms by the holding portion after the state of being sharpened by more than 90 ° .

According to such a configuration, the carton in which the first side surface portion is held by the holding portion of the holding unit moves to the side facing the first side surface portion. Then, the second side surface portion that is flatly connected to the first side surface portion is pushed up by the pressing portion. That is, the portion where the boundary between the first side surface portion and the second side surface portion is folded back is not pushed. Therefore, it is possible to prevent the folded portion from being dented or damaged. In addition, the pressing portion can make the second side surface portion stand upright with respect to the first side surface portion more efficiently. Therefore, according to the carton assembling device, it is possible to assemble the carton more efficiently while suppressing damage to the carton.
Further, the pressing portion pushes the second side surface portion, and the contact point with the second side surface portion exceeds the boundary between the first side surface portion and the second side surface portion in the width direction. Since the carton reaches a position overlapping the first side surface portion, when the carton is a one-touch bottom carton, the locking portions of the bottom surface portion of the carton can be more reliably locked to each other. Further, even when the carton is not a one-touch bottom carton, the angle formed by the first side surface portion and the second side surface portion is made an acute angle exceeding 90 ° from an obtuse angle, so that the carton can be formed. It is possible to weaken the force to return to the flatly folded shape, and to promote the pair of first side surface portions and the pair of second side surface portions to form a more complete square cylinder. can.

In a preferred embodiment of the present invention, the pressing portion includes a roller. According to such a configuration, when the pressing portion moves while being pressed against the second side surface portion, the roller constituting the pressing portion rotates. Therefore, it is possible to prevent the pressing portion from rubbing against the second side surface portion, and it is possible to prevent the carton from being damaged.

In a preferred embodiment of the present invention , a stopper perpendicular to the pair of transport arms is further provided, and when the carton enters between the pair of transport arms and then the carton is brought into contact with the stopper. In addition, the holding of the carton by the holding portion is released.

In a preferred embodiment of the present invention, a movable base that supports the pressing portion and is movable relative to the holding unit is provided. With such a configuration, it is possible to adjust the distance between the holding unit and the pressing unit, and it is possible to assemble the carton of various sizes and shapes.

According to the present invention, it is possible to assemble the carton more efficiently while suppressing damage to the carton.

Other features and advantages of the invention will be more apparent by the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows an example of the carton assembly apparatus which concerns on this invention. It is a top view which shows an example of the carton assembly apparatus which concerns on this invention. It is a front view which shows an example of the carton assembly apparatus which concerns on this invention. It is a development view which shows an example of a carton. It is sectional drawing which shows an example of a carton in a folded state. It is a main part perspective view which shows the state which an example of a carton is assembled. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is an enlarged plan view of the main part which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a main part plan view which shows the assembly by an example of the carton assembly apparatus which concerns on this invention. It is a development view which shows the other example of a carton. It is a development view which shows still another example of a carton.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

1 to 3 show an example of a carton assembling device according to the present invention. The carton assembly device A1 of the present embodiment includes a support base 1, a holding unit 2, a pressing unit 3, a motor 4, a chain gear mechanism 5, a stopper 6, and a plurality of transport arms 7. The carton assembly device A1 is a device for assembling the carton 9 shown in FIGS. 4 to 6 from a folded state to a square cylindrical state.

FIG. 1 is a perspective view showing a carton assembly device A1. FIG. 2 is a plan view showing the carton assembly device A1. FIG. 3 is a front view showing the carton assembly device A1. For convenience of understanding, the motor 4, the stopper 6 and the transfer arm 7 are omitted in FIG. 1, the transfer arm 7 is omitted in FIG. 2, and the stopper 6 and the transfer arm are omitted in FIG. 7 is omitted.

FIG. 4 is a developed view showing an example of a carton assembled by the carton assembling device A1. The carton 9 shown in the figure has a pair of first side surface portions 91, a pair of second side surface portions 92, a pair of first bottom surface portions 93, a pair of second bottom surface portions 94, and a lid portion 95.

The pair of first side surface portions 91 and the pair of second side surface portions 92 are connected to each other at both ends in the width direction. In the illustrated example, the margin 97 is joined to the second side surface portion 92 on the opposite side. In the carton 9 before assembly, as shown in FIG. 5, the first side surface portion 91 and the second side surface portion 92 located on one side in the width direction are connected flatly, and the first side surface portion 91 and the first side surface portions 91 located diagonally to each other are connected to each other. A pair of boundaries of the second side surface portion 92 is folded. As a result, the carton 9 before assembly is folded flat.

Further, the illustrated carton 9 has a structure called a so-called one-touch bottom carton, and each of the pair of first bottom surface portions 93 has a locking portion 931 and a sticking portion 932. As shown in FIG. 6, the locking portions 931 of the pair of first bottom surface portions 93 are portions that increase the rigidity of the bottom portion of the carton 9 by engaging with each other when the carton 9 is assembled. The sticking portion 932 is a portion to be previously joined to the second bottom surface portion 94 before being folded flat.

The lid portion 95 is for sealing the carton 9 after accommodating the contents such as a bottle in the carton 9 which has been assembled. The lid portion 95 is provided with a flap 951 for more reliable sealing. Further, a pair of side flaps 96 are provided on the portions corresponding to both sides of the lid portion 95.

The carton 9 is not limited to the one-touch bottom carton, and as shown in FIGS. 19 and 20, the bottom portion is formed by another operation after assembling by the carton assembling device A1 as in the example described later. May be. For example, in the example shown in FIG. 19, the carton 9 has a first bottom surface portion 93 and a pair of second bottom surface portions 94 as portions constituting the bottom portion. After the pair of first side surface portions 91 and the pair of second side surface portions 92 are formed in a square cylinder shape by assembly by the carton assembly device A1, the boundary between the pair of second bottom surface portions 94 and the pair of second side surface portions 92. Then, the boundary between the first bottom surface portion 93 and the first side surface portion 91 is folded, and the flap first bottom surface portion 933 is inserted to form the bottom portion. Further, in the example shown in FIG. 20, the carton 9 has a first bottom surface portion 93, a pair of second bottom surface portions 94, and a flap 98 as portions constituting the bottom portion. Further, in this example, the carton 9 has a flap 99 at a position facing the lid portion 95. After the pair of first side surface portions 91 and the pair of second side surface portions 92 are formed into a square cylinder by assembling by the carton assembly device A1, the pair of second bottom surface portions 94 and the flap 98 and the pair of second side surface portions 92 are formed. And the boundary with the first side surface portion 91 is folded, then the boundary between the first bottom surface portion 93 and the first side surface portion 91 is folded, and for example, an adhesive treatment for fixing the first side surface portion 91 is performed. As a result, the bottom portion in this example is formed.

The support base 1 supports the holding unit 2, the pressing unit 3, and the like. The specific configuration of the support base 1 is not particularly limited, and any configuration may be used as long as the holding unit 2, the pressing unit 3, and the like can appropriately exert their functions.

In the present embodiment, the support base 1 includes a fixed base 11 and a movable base 12. The fixed base 11 is a base that is fixed by being placed on the installation location of the carton assembly device A1 or the like. The movable base 12 is movable in the left-right direction in FIGS. 2 and 3 with respect to the fixed base 11. In this embodiment, the fixed base 11 supports the holding unit 2 and the movable base 12 supports the pressing unit 3.

A plurality of elongated holes 121 are formed in the movable base 12. The elongated hole 121 is a through hole having a shape in which the left-right direction in FIG. 2 is the longitudinal direction. The fixed base 11 is provided with a plurality of pins 111. The pin 111 projects upward and is housed in the elongated hole 121 of the movable base 12. When moving the movable base 12 with respect to the fixed base 11, the pin 111 and the elongated hole 121 engage with each other to guide the movement of the movable base 12. Further, in the present embodiment, the support base 1 is provided with the adjusting rod 13. The adjusting rod 13 extends in the left-right direction in the figure in FIG. 2, and is rotated around an axis extending in the left-right direction to move the movable base 12 in the left-right direction in the figure with respect to the fixed base 11. Is.

The holding unit 2 is a unit that holds the first side surface portion 91 of the carton 9 and moves the carton 9 to the side facing the held first side surface portion 91. In the present embodiment, the holding unit 2 is composed of a holding portion 21, a holding arm 22, a link arm 23, an intermediate support portion 24, an orbiting arm 25, a planetary gear 26, and an annular gear 27. Note that FIG. 7 is an enlarged plan view of a main part showing a portion including the holding unit 2 and the pressing unit 3. The configuration of the holding unit 2 is not particularly limited, and may be configured by using, for example, an industrial robot, in addition to the configuration using the link mechanism as in the present embodiment.

The holding portion 21 is a portion that holds the first side surface portion 91 of the carton 9. In the present embodiment, the holding portion 21 holds the first side surface portion 91 by suction. The holding arm 22 is a rod-shaped member that supports the holding portion 21. In the present embodiment, the holding arm 22 may be formed with a suction hole leading to the holding portion 21. In this case, a suction hose (not shown) (not shown) is connected to the holding arm 22. This hose is connected to a suction source such as a pump (not shown).

The link arm 23 supports the holding arm 22. In the present embodiment, the angle between the holding arm 22 and the link arm 23 is fixed, and is, for example, a substantially right angle. The intermediate support portion 24 supports the link arm 23 with respect to the fixed base 11. In this embodiment, the intermediate support portion 24 supports the link arm 23 so as to allow sliding of the link arm 23 in the longitudinal direction and rotation in a plan view.

The circumferential arm 25 is rotatably attached to the end of the link arm 23. Further, the orbiting arm 25 is fixed to the planetary gear 26, and rotation and movement with respect to the planetary gear 26 are prevented. The planetary gear 26 is a gear that revolves along the annular gear 27 while rotating on its axis screwed to the annular gear 27. Along with the rotation and revolution of the planetary gear 26, the orbiting arm 25 also rotates and revolves. The planetary gear 26 is rotated by the driving force of the motor 4. The annular gear 27 is a gear having a plurality of teeth formed on its inner surface, and is fixed to the fixed base 11. In the present embodiment, in the assembly process described later, the planetary gear 26 rotates clockwise in FIG. 7, thereby revolving counterclockwise.

The pressing unit 3 is a unit that promotes the carton 9 to become a square cylinder by pushing up the second side surface portion 92 that is flatly connected to the first side surface portion 91 held by the holding unit 2. In the present embodiment, the pressing unit 3 is composed of a pressing portion 31, a bending arm 32, a connecting arm 33, a swing arm 34, and a cam wheel 35. The configuration of the pressing unit 3 is not particularly limited, and may be configured by using, for example, an industrial robot, in addition to the configuration using the cam crank mechanism as in the present embodiment.

The pressing portion 31 is a portion that pushes up the second side surface portion 92 by being pressed against the second side surface portion 92 that is flatly connected to the first side surface portion 91 held by the holding portion 21 of the holding unit 2. .. The specific configuration of the pressing portion 31 is not particularly limited as long as the second side surface portion 92 can be appropriately pushed up. In the present embodiment, the pressing portion 31 is composed of rollers.

The bending arm 32 is an arm to which the pressing portion 31 is attached, and is rotatably supported by the movable base 12 by the shaft 323. In this embodiment, the bending arm 32 has a first part 321 and a second part 322. The first part 321 and the second part 322 are fixed to each other on the shaft 323. A pressing portion 31 is attached to the tip of the first portion 321. A long hole 322a is formed in the second part 322.

The connecting arm 33 is a portion that connects the bending arm 32 and the swing arm 34. The connecting arm 33 has a pin 331. The pin 331 is housed in the elongated hole 322a of the second portion 322 of the bending arm 32. Therefore, the second portion 322 of the bending arm 32 and the connecting arm 33 can rotate and move with each other within the range in which the pin 331 moves in the elongated hole 322a. Further, the connecting arm 33 is rotatably supported by the tip of the swing arm 34.

The swing arm 34 is rotatably supported by a movable base 12 by a shaft 342. Therefore, the swing arm 34 can swing around the shaft 342. The swing arm 34 is provided with a roller 341. The roller 341 is provided near the center of the swing arm 34.

The outer peripheral shape of the cam wheel 35 is such that the pressing portion 31 is operated in a predetermined trajectory, and is rotated by the driving force of the motor 4. The outer circumference of the cam wheel 35 is in contact with the roller 341 of the swing arm 34. The swing arm 34 is urged so that the roller 341 always abuts on the outer periphery of the cam wheel 35 by, for example, a spring (not shown).

The motor 4 is a drive source for operating the holding unit 2 and the pressing unit 3. In the present embodiment, the holding unit 2 and the pressing unit 3 are operated by one motor 4. In addition, unlike this embodiment, a dedicated motor 4 may be provided for each of the holding unit 2 and the pressing unit 3. Further, instead of the motor 4, a device such as an air cylinder may be adopted as a drive source.

The chain gear mechanism 5 is a mechanism for transmitting the driving force of the motor 4 to the planetary gear 26 of the holding unit 2 and the cam wheel 35 of the pressing unit 3, respectively. The chain gear mechanism 5 is a mechanism in which a plurality of shafts connected to the motor 4, gears for transmitting the rotation of the shafts, chains hung around the gears, and the like are used as needed.

The stopper 6 assists the carton 9 assembled in a rectangular shape to separate from the holding unit 2. In the present embodiment, the stopper 6 is provided at a height different from that of the holding portion 21 and the holding arm 22 of the holding unit 2 in the height direction, and interference with these is avoided.

The plurality of transport arms 7 are for transporting the carton 9 separated from the holding unit 2 at the stopper 6 to the right in the figure in FIG. 7. In the present embodiment, the carton 9 is transported with the carton 9 sandwiched between the adjacent transport arms 7. The mechanism for transporting the assembled carton 9 is not particularly limited, and any configuration may be used as long as the carton 9 can be transported while appropriately performing the assembly operation by the holding unit 2 and the pressing unit 3.

Next, the assembly process of the carton 9 by the carton assembling device A1 will be described below with reference to FIGS. 7 to 18. In these figures, for convenience of explanation, the direction toward the front side in the plan view is defined as the direction F, and the direction toward the back side is defined as the direction B. Further, in a plan view, the right side is defined as the direction R, and the left side is defined as the direction L.

FIG. 7 shows an initial state of an assembly process of a carton 9. In the state shown in the figure, the planetary gear 26 is located on the farthest direction F side in its orbit. The angle of the planetary gear 26 and the cam wheel 35 in this state is defined as 180 ° (clockwise is the positive direction). The supply position α is a position where the folded carton 9 is supplied. The method for supplying the carton 9 is not particularly limited, and a plurality of folded cartons 9 may be arranged side by side, or the folded carton 9 may be sequentially transported by a transport mechanism (not shown). In the figure, the folded carton 9 is shown by one straight line for convenience. The first side surface portion 91 facing the direction B is located on the direction L side of the carton 9, and the second side surface portion 92 facing the direction B is located on the direction R side. The first side surface portion 91 and the second side surface portion 92 are connected to each other flatly. In the figure, the holding portion 21 of the holding unit 2 holds the first side surface portion 91 of the carton 9 at the supply position α by suction. Further, in this state, the pressing portion 31 of the pressing unit 3 has not yet come into contact with the second side surface portion 92.

FIG. 8 shows a state in which the planetary gear 26 is rotated at 170 ° and the cam wheel 35 is rotated at 190 °. As the planetary gear 26 rotates, the orbiting arm 25 rotates by 10 °. As a result, the link arm 23 moves in the direction B while slightly tilting. Further, the holding arm 22 is moving in the direction B while slightly tilting. As a result, the carton 9 held by the holding portion 21 moves in a slightly tilted posture in the direction B on which the first side surface portion 91 held by the holding portion 21 faces. The portion of the outer circumference of the cam wheel 35 that the roller 341 is in contact with is a part of a circle having the same radius. Therefore, the swing arm 34, the connecting arm 33, the bending arm 32, and the pressing portion 31 are not operating.

FIG. 9 shows a state in which the planetary gear 26 is rotated at 140 ° and the cam wheel 35 is rotated at 220 °. As the planetary gear 26 rotates, the orbiting arm 25, the link arm 23, and the holding arm 22 move in the direction B while further tilting. As a result, the carton 9 is moving in the direction B. Further, the portion of the outer circumference of the cam wheel 35 that the roller 341 is in contact with is a portion that is recessed inward from the portion of the circle having the same radius. As a result, the swing arm 34 slightly swings in the direction F. Further, the connecting arm 33 slightly moves in the direction F, and the bending arm 32 rotates slightly clockwise. Then, the pressing portion 31 is in contact with the second side surface portion 92.

FIG. 10 shows a state in which the planetary gear 26 is rotated at 125 ° and the cam wheel 35 is rotated at 235 °. The carton 9 is further moving in direction B. Since the swing arm 34 further swings in the direction F, the bending arm 32 further rotates clockwise. As a result, the pressing portion 31 pushes the second side surface portion 92 in the direction F opposite to the side on which the second side surface portion 92 faces. Further, the pressing portion 31 is moving toward the side closer to the first side surface portion 91 in the width direction W of the first side surface portion 91. As a result, the second side surface portion 92 is pushed up by the pressing portion 31, and the second side surface portion 92 is being brought into an upright state with respect to the first side surface portion 91.

11 and 12 show a state in which the planetary gear 26 is rotated to a position of 110 ° and the cam wheel 35 is rotated to a position of 250 °. The carton 9 is further moving in direction B. Further, the portion of the outer circumference of the cam wheel 35 to which the roller 341 of the swing arm 34 abuts has a smaller distance from the center of rotation of the cam wheel 35. Therefore, since the swing arm 34 further swings in the direction F, the bending arm 32 further rotates clockwise. As a result, the pressing portion 31 further pushes the second side surface portion 92, and in the figure, the angle formed by the first side surface portion 91 and the second side surface portion 92 reaches 90 ° from the obtuse angle and is further acute. It has become. That is, as shown in FIG. 12, the contact point P between the pressing portion 31 and the second side surface portion 92 is the boundary between the first side surface portion 91 and the second side surface portion 92 in the width direction W of the first side surface portion 91. It reaches the position where it overlaps with the first side surface portion 91. In other words, a straight line L passing through the contact point P and perpendicular to the width direction W (first side surface portion 91) intersects the first side surface portion 91. When the carton 9 is a one-touch bottom carton, when the angle formed by the first side surface portion 91 and the second side surface portion 92 is 90 ° or less, the locking portion of the pair of first bottom surface portions 93 shown in FIGS. 4 and 6 931s are locked to each other. As a result, the bottom portion of the carton 9 is formed by the pair of first bottom surface portions 93 and the pair of second bottom surface portions 94.

FIG. 13 shows a state in which the planetary gear 26 is rotated at 80 ° and the cam wheel 35 is rotated at 280 °. The carton 9 is further moving in direction B and is entering between the pair of transport arms 7. Further, the portion of the outer circumference of the cam wheel 35 that the roller 341 of the swing arm 34 abuts has a large distance from the center of rotation. Therefore, the swing arm 34 swings in the direction B, and the bending arm 32 rotates counterclockwise. As a result, the pressing portion 31 is separated from the second side surface portion 92 of the carton 9.

FIG. 14 shows a state in which the planetary gear 26 is rotated at a position of 50 ° and the cam wheel 35 is rotated at a position of 310 °. The carton 9 moves further in direction B, most of which enters between the pair of transport arms 7. Further, the portion of the outer circumference of the cam wheel 35 to which the roller 341 of the swing arm 34 abuts has returned to a circular portion having the same radius. Therefore, the swing arm 34 further swings in the direction B, and the pressing portion 31 is completely separated from the second side surface portion 92.

FIG. 15 shows a state in which the planetary gear 26 is rotated at 20 ° and the cam wheel 35 is rotated at 340 °. In the process from FIG. 14 to FIG. 15, the carton 9 is in contact with the stopper 6. At this time, the suction from the holding portion 21 of the holding unit 2 is stopped, and the holding of the carton 9 by the holding portion 21 is released. The carton 9 in contact with the stopper 6 is located at the discharge position β in a state of being assembled in a square cylinder shape. In FIG. 15, the holding portion 21 further moves in the direction B and is completely separated from the first side surface portion 91 of the carton 9. On the other hand, since the swing arm 34 does not swing due to the rotation of the cam wheel 35, the pressing portion 31 is stopped.

FIG. 16 shows a state in which the planetary gear 26 is rotated to a position of 320 ° and the cam wheel 35 is rotated to a position of 40 °. The holding portion 21 is largely separated from the carton 9 in the direction B. The pressing portion 31 is kept in a stopped state. A pair of transport arms 7 sandwiching the carton 9 transports the carton 9 in the direction R from the discharge position β. The driving method of the pair of transport arms 7 is not particularly limited, and may be mounted on a belt driven by a motor or the like, or may be reciprocated by an air cylinder or the like. good. Further, the method and direction of carrying out the carton 9 are not particularly limited.

FIG. 17 shows a state in which the planetary gear 26 is rotated at a position of 260 ° and the cam wheel 35 is rotated at a position of 100 °. The link arm 23 has begun to return to the direction F, and the holding portion 21 has moved to the direction F. The carton 9 sandwiched between the pair of transport arms 7 is further transported in the direction R. FIG. 18 shows a state in which the planetary gear 26 is rotated at a position of 200 ° and the cam wheel 35 is rotated at a position of 160 °. The link arm 23, the holding arm 22, and the holding portion 21 are further moved in the direction F. When the planetary gear 26 and the cam wheel 35 further rotate by 20 ° from this state, the state returns to the state shown in FIG. 7. After that, a new carton 9 is held at the supply position α, and by repeating the above-mentioned assembly process, a plurality of cartons 9 are continuously assembled and sequentially conveyed.

Next, the operation of the carton assembly device A1 will be described.

According to the present embodiment, as shown in FIGS. 9 and 10, the carton 9 in which the first side surface portion 91 is held by the holding portion 21 of the holding unit 2 is in the direction in which the first side surface portion 91 faces. Move to B. Then, the second side surface portion 92 that is flatly connected to the first side surface portion 91 is pushed up by the pressing portion 31. More specifically, the second side surface portion 92 is pushed by the pressing portion 31 in the direction F opposite to the side on which the second side surface portion 92 faces. As a result, the second side surface portion 92 is raised in an upright state with respect to the first side surface portion 91. In the present embodiment, the portion where the boundary between the first side surface portion 91 and the second side surface portion 92 is folded back is not pressed. Therefore, it is possible to prevent the folded portion from being dented or damaged. Further, the pressing portion 31 moves in the direction L so as to approach the first side surface portion 91 in the width direction W of the first side surface portion 91 while pushing the second side surface portion 92 in the direction F. As a result, the second side surface portion 92 can be made to stand upright with respect to the first side surface portion 91 more efficiently as compared with the case where the second side surface portion 92 is pushed only in the direction F. Therefore, according to the carton assembling device A1, it is possible to assemble the carton 9 more efficiently while suppressing damage.

Further, in the present embodiment, the pressing portion 31 includes a roller. As a result, when the pressing portion 31 moves while being pressed against the second side surface portion 92, the rollers constituting the pressing portion 31 rotate. Therefore, it is possible to prevent the pressing portion 31 from rubbing against the second side surface portion 92, and it is possible to prevent the carton 9 from being damaged.

Further, in the present embodiment, as shown in FIG. 12, the contact point P between the pressing portion 31 and the second side surface portion 92 is the first side surface portion 91 and the second side surface portion 91 in the width direction W of the first side surface portion 91. It has reached a position where it exceeds the boundary with the side surface portion 92 and overlaps with the first side surface portion 91. Thereby, when the carton 9 is a one-touch bottom carton, the locking portions 931 of the pair of first bottom surface portions 93 shown in FIGS. 4 and 6 can be more reliably locked to each other. Further, even when the carton 9 is not a one-touch bottom carton, the angle formed by the first side surface portion 91 and the second side surface portion 92 is made an acute angle exceeding 90 ° from the obtuse angle, so that the first side surface portion 91 is formed. It is possible to weaken the force of the portions 91 to return to a flatly folded shape, facilitating the pair of first side surface portions 91 and the pair of second side surface portions 92 forming a more complete square cylinder. can do.

In the present embodiment, the movable base 12 can be moved and adjusted with respect to the fixed base 11. The holding unit 2 is fixed to the fixed base 11, and the pressing unit 3 is fixed to the movable base 12. This makes it possible to adjust the distance between the holding unit 2 and the pressing unit 3, and it is possible to assemble cartons 9 of various sizes and shapes. Further, in the present embodiment, the location where the holding arm 22 is fixed by the link arm 23, the angle formed by the first part 321 and the second part 322, and the like can be appropriately adjusted, and cartons of various sizes and shapes can be appropriately adjusted. It is possible to deal with 9 in more detail.

The carton assembly device according to the present invention is not limited to the above-described embodiment. The specific configuration of each part of the carton assembling device according to the present invention can be freely redesigned.

A1: Carton assembly device 1: Support stand 2: Holding unit 3: Pushing unit 4: Motor 5: Chain gear mechanism 6: Stopper 7: Conveyor arm 9: Carton 11: Fixed base 12: Movable base 13: Adjustment rod 21: Holding part 22: Holding arm 23: Link arm 24: Intermediate support part 25: Circulating arm 26: Planetary gear 27: Circular gear 31: Pushing part 32: Bending arm 33: Connecting arm 34: Swing arm 35: Cam wheel 91: 1st side surface part 92: 2nd side surface part 93: 1st bottom surface part 94: 2nd bottom surface part 95: lid part 96: side flap 111: pin 121: elongated hole 321: 1st part 322: 2nd part 322a: long Hole 323: Shaft 331: Pin 341: Roller 342: Shaft 931: Locking part 932: Attached part 951: Flap B: Width direction P: Contact point F, B, R, L: Direction α: Supply position β: Discharge position

Claims (4)

A pair of the first side surface portion and the second side surface portion having a pair of first side surface portions and a pair of second side surface portions connected to both ends in the width direction of the pair of first side surface portions and diagonally to each other. A carton assembling device that assembles a carton that is folded flat by folding the boundary of the above so that the pair of first side surface portions and the pair of second side surface portions form a square cylinder.
A holding unit having a holding portion for holding the first side surface portion and moving the carton to the side facing the first side surface portion.
A pressing unit having a pressing portion that pushes up the second side surface portion that is flatly connected to the first side surface portion of the carton that is moved by the holding unit.
The pressing portion pushes the second side surface portion, and the contact point with the second side surface portion exceeds the boundary between the first side surface portion and the second side surface portion in the width direction. Reach the position that overlaps the side part,
When the contact point between the pressing portion and the second side surface portion exceeds the boundary between the first side surface portion and the second side surface portion, the first side surface portion is located on the side facing the carton. , Further equipped with a pair of transport arms,
The pair of transport arms have a shape that is separated from each other in the width direction of the first side surface portion and extends in parallel with each other.
The holding portion is after the pressing portion and the second side surface portion are in contact with each other and the angle formed by the first side surface portion and the second side surface portion becomes an acute angle exceeding 90 ° from an obtuse angle. A carton assembling device, characterized in that the carton enters between the pair of transport arms. The carton assembling device according to claim 1, wherein the pressing portion includes a roller. The carton assembling device according to claim 1 or 2 , further comprising a movable base that supports the pressing portion and is movable relative to the holding unit. Further provided with a stopper at right angles to the pair of transport arms.
The carton is released from being held by the holding portion when the carton is brought into contact with the stopper after the carton has entered between the pair of transport arms, according to any one of claims 1 to 3. The carton assembly equipment described.

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