JPH0723151B2 - Carton carrier - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a carton carrier, and more specifically,
The present invention relates to a transport device for intermittently transporting a carton, which is expanded into a rectangular tube shape with a flap open, toward an article filling section.

2. Description of the Related Art A number of cartons stacked in a hopper in a flatly folded state are taken out from the hopper one by one and expanded into a rectangular tube shape, and the cartons are conveyed to an article filling section to obtain the required articles. A cartoner in which each flap formed in the carton is folded and glued and adhered after filling is widely used. For this cartoner, it is indispensable to install a carton carrying device for carrying the carton expanded in a rectangular tube shape toward the article filling section.

An example of this type of carton carrier is Japanese Patent Laid-Open No.
As disclosed in Japanese Patent No. 58633, a discharge conveyor is disposed below the transport surface of a box-shaped carton so as to be able to circulate endlessly, and a plurality of transport claws protruding above the transport surface of the carton are provided on the discharge conveyor. The mechanism installed upright is known. In this device, when the cartons taken out from the magazine one by one and expanded into a rectangular tube shape are transferred to the carton transfer surface, the carton is moved by the transfer claws protruding and moving from the transfer surface as the discharge conveyor travels. Are sequentially transported along the transport surface.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-described device for arranging the transfer claws on the endless conveyor, a large number of transfer claws must be arranged on the conveyor at predetermined intervals, which has a drawback of increasing the cost. Also, since this transport claw protrudes from the conveyor by a predetermined height,
It is necessary to secure a space under which the conveyor can circulate without touching its claws with a mechanical device below the carton conveying surface, which causes a problem that the height of the device is inevitably increased.

Further, in the above-described transporting device, when a box-shaped carton is filled with articles, for example, a pusher of a filling device provided in parallel with the transporting device is moved in parallel so as to follow the conveyor, and By moving the pusher back and forth toward the transport device, the cartons transported by the conveyor are continuously filled with the articles sequentially supplied from the supply source. In this case, the mechanism of the filling device becomes complicated, the equipment cost increases, and
It is pointed out that the device becomes larger.

SUMMARY OF THE INVENTION The present invention has been devised to solve the above-mentioned drawbacks inherent in the carton carrier according to the related art, and is mechanically simple and compact, and the manufacturing cost is low. It is an object of the present invention to provide a carton transfer device that can be used.

Means for Solving the Problems In order to overcome the above problems and achieve an intended object, the present invention is a device for carrying a box-shaped carton placed on a pair of carrying rails arranged in parallel at predetermined intervals. A first guide rail and a second guide rail, which are respectively arranged on opposite surfaces of the transport rail and extend parallel to each other at a predetermined distance above and below.
A guide rail, a movable body slidably disposed on the lower first guide rail, and capable of reciprocating along the rail, and a carton transport direction from the disposition position of the first arm on the movable body. A second arm that is rotatably supported at a position distant to the downstream side of the second arm; and a second arm that is disposed on one side of the second arm that opposes the transport rail. The second arm is engaged with the upper second guide rail to project the second arm from the upper surface of the transport rail, and when the moving body moves backward, the second arm is engaged with the lower first guide rail. The second arm comprises an engaging portion that sinks from the upper surface of the transport rail, and when the movable body moves forward, the first arm and the second arm respectively project from the transport rail to transport the carton, and When the moving body retreats The second arm is configured so as not to settle down from the transport rail and interfere with the carton transported by the first arm.

Embodiments Next, a carton carrier according to the present invention will be described in detail below with reference to the accompanying drawings with reference to preferred embodiments. FIG. 1 is a schematic side view of a cartoner adopting a carton carrying device according to an embodiment. In order to facilitate understanding of the carton carrying device according to the present invention, a schematic structure of the cartoner will first be briefly described, and then the present invention device will be described.

[Carton 10] First, prior to the description of the device according to the embodiment, a schematic configuration of a carton to be handled by the device will be briefly described.
As shown in FIGS. 17 (a) and 17 (b), the carton 10 used in this embodiment has a rectangular top plate 11, a side plate 12, a bottom plate 13 and a side plate 12 continuously in this order in the lateral direction. The flaps 14 are provided so as to be foldable at both ends of each plate member. And a flap formed on the top plate 11 of the carton 10.
As shown in FIG. 17 (a), 14 is set so as to extend slightly outwardly than the flap 14 formed on the bottom plate 13 when folded flat. As will be described later, the flap 14 on the top plate side allows lifting by the take-out means when the flatly folded carton 10 is taken out from the hopper, and moves between the top plate 11 and the bottom plate 13 of the carton 10. , Allowing the ejection means to be inserted.

In the embodiment, the flap 14 formed on the top plate 11 is referred to as an upper flap 14a, and the flap 1 formed on the bottom plate 13 is
4 is referred to as the lower flap 14b. Further, the flaps 14 formed on the side plate 12 will be referred to as horizontal flaps 14c to distinguish them from each other.

[Regarding Hopper 17] FIG. 1 is a vertical sectional side view showing a schematic configuration of the cartoner 15. The carton 10 is flatly folded above the apparatus frame 16 located upstream of the cartoner 15 in the carton conveying direction. A hopper 17 that stores a large number of stacked sheets is disposed. This hopper 17 is a carton shown in FIG.
When the conveyance direction of 10 is set to the front, it is basically composed of a plurality of support members 18 spaced apart in the front-rear direction and a pair of restriction members 19, 19 spaced apart in the left-right direction in FIG. That is, the overhanging member 20 that horizontally extends forward is provided on the lateral stay 16a located above the frame 16 in FIG.
And a pair of left and right support members 18 and 18 (in FIG. 3, one support member 1 is provided on the front surface of the overhanging member 20 at required intervals.
(Only 8 shown) are arranged vertically. Further, another pair of support members 18, 18 are vertically disposed facing the support members 18, 18 at a position spaced apart from the support members 18, 18 by a predetermined distance. The latter supporting members 18, 18 are fixed to the frame 16 by appropriate means.

A total of four support members 18 are located at the respective vertices of the virtual quadrangle in a planar state, and the roller is provided at the lower end of each support member 18.
21 is rotatably supported. These rollers 21
Both of them slightly project to the side of the roller 21 facing each other.
The carton 10 in the folded state has four rollers 21.
The edge of the bottom plate 13 or the side plate 12 (the end where the flap 14 is not formed) is placed and laminated on the oblique upper surface of the. The supporting members 18, 18 located on the front surface side (transporting direction of the carton 10) in FIG. 2 are configured to be movable toward and away from the other opposing supporting members 18, 18 by appropriate means. The distance can be adjusted according to the change in carton size due to the change in order.

Also, as shown in FIGS. 2 and 3, the hopper 17 is
A pair of regulating members 19, 19 are arranged in the
19 are also configured to be able to approach and separate from each other by appropriate means. These restricting members 19 and 19 are the four rollers 21.
The carton 10 placed on the base plate is brought into contact with the end portion of the carton 10 on the flap forming side to perform the function of restricting the position of the carton 10.

[Regarding Carton Extraction Forming Device 22] As shown in FIG. 1, below the hopper 17, the extraction forming device that expands the cartons 10 stacked in the hopper 17 one by one while expanding them into a rectangular tube shape. 22 are provided. The device 22 will be described below for each component.

(Regarding the support 25) The horizontal stays 16 that are vertically spaced apart from each other on the frame 16
Brackets 23, 23 are arranged so as to extend horizontally in a and 16a, respectively, and a pair of guide rods 24, 24 parallel to both brackets 23, 23 are provided vertically. As shown in FIG. 4, supports 25, 25 are slidably arranged in a vertical relationship on each guide rod 24, and both supports 25, 25 are fixed by side plates 26, 26.

Also, as shown in FIGS. 2 and 4, a gluing device to be described later
A disc 28 that is rotated in a predetermined direction by a motor 27 that is a common drive source for the 68 and the conveyance device 108 is vertically provided, and one end of the crank arm 30 is attached to a groove cam 29 formed on one side surface of the disc 28. Laura 31, which was pivotally supported, faces. The crank arm 30 is rotatably supported by a bracket 32 protruding from the frame 16 via a pin 33. One end of a rod 34 is pivotally attached to the other end of the arm 30, and the other end of the rod 34 is pivotally attached to the one side plate 26. Therefore, when the disk 28 rotates to move the roller 31 in the groove cam 29, the crank arm 30 makes a swinging motion around the pin 33, and the supporting body 25 is guided by the guide rods 24, 2.
Reciprocate along 4. In the groove cam 29, the horizontal portions 35a, 35a of the take-out means 35, 35 described later are attached to the hopper 17
The flaps 14, 14 formed on the top plate 11 of the lowermost carton 10 stacked on the support body 25,
It is formed in a shape that can raise 25.

(Regarding the holding member 38) The support body 25 is formed in a convex shape in a plane as shown in FIG. 4, and a guide rod 36 is horizontally inserted and fixed to a protruding portion 25a of the support body 25 for a predetermined length in the left-right direction. It is extended. Since the supports 25, 25 are arranged in the vertical relationship, the two guide rods 36 also extend in parallel in the vertical relationship. Both ends of both guide rods 36, 36 are commonly fixed by plate members 37, respectively. A holding member 38 and a take-out means 35, which will be described later, necessary for take-out molding of the carton 10 are provided on the left and right sides of the guide rods 36, 36, respectively, but since these members are symmetrical, Only the member on the left side of the drawing will be described.

As shown in FIG. 4, the two parallel guide rods 36, 36 have
A mounting plate 39 is inserted and fixed at an appropriate position on the side of the support 25. In addition, the mounting plate 39 on both guide rods 36, 36
Between the plate member 37 and the plate member 37, there is a holding member 38 via a slide bearing.
Is slidably inserted and supported. A pneumatic cylinder 40 is disposed on the mounting plate 39 in parallel with the guide rod 36, and the piston rod 40a of the cylinder 40 has the holding member 3
Connected to 8. Therefore, by biasing the cylinder 40 in the forward and reverse directions, the holding member 38 moves the guide rods 36, 36.
It can slide horizontally along. The mounting plate
The position of 39 is adjustable with respect to the guide rods 36, 36, and the moving region of the holding member 38 driven by the cylinder 40 can be adjusted.

(Regarding the take-out means 35) As is particularly clear from FIG. 4, the upper part of the holding member 38 is
A mounting member 41 that extends horizontally in the transport direction of the carton 10 is fixed, and the upper flap 14a of the carton 10 is lifted to the tip of the mounting member 41 as described later, and the carton 10 can be inserted into the carton 10. Means 35 are provided. That is, the take-out means 35 is composed of a plate-like member bent in the shape of a horizontal L, and the open end of the horizontal part 35a thereof has the open end of the horizontal part 35a of the other opposite take-out means 35 as shown in FIGS. Is oriented to. Therefore, both take-out means 35, 35
Is to be moved up and down by the ascending / descending movement of the supports 25, 25, and to be moved closer to each other and separated from each other by the synchronous biasing of the cylinders 40, 40. By this movement, the upper flap 14a of the carton 10 to be described later is Lifting, insertion into and removal from the carton.

(Regarding Restriction Plate 43) As shown in FIGS. 2 to 4, a bracket 42 extending in the transport direction of the carton 10 is disposed on the protruding portion 25 a of the support 25 on the upper side. Horizontal part 42a
The L-shaped regulation plate 43 is provided upright. This regulation plate
As shown in FIG. 2, 43 is set so as to be located substantially directly below the support member 18 provided on the rear side of the hopper 17 (the upstream side in the transport direction of the carton 10), and is taken out from the hopper 17 by the take-out means 35 as described later. The rear bottom portion of the taken out carton 10 is supported and its position is regulated. Also, the regulation plate 43
Is moved up and down with a required stroke below the hopper 17 as the support 25 is moved up and down.

(Regarding the guide member 45) As shown in FIG.
The transport rails 44, 44 of the carton 10 extend horizontally, substantially in line with the level at which 25 is most lowered. A pair of guide members having a curved shape above the transport rails 44, 44 and facing the ascending / descending trajectory of the regulation plate 43.
45, 45 are arranged at predetermined intervals in a direction intersecting the carton transport direction. The guide member 45 is made of a plate material curved in a direction of retracting from the support 25 as it goes upward, and in the process of taking out the carton 10 from the hopper 17, as shown in FIG. By contacting the front end bottom portion (that is, the side plate 12) and raising the side plate 12, the carton 10 functions to expand into a rectangular tube shape.

[Side plates 12, 12 in the article filling device 48 and the carton 10
Regarding the expanding means of the lateral flaps 14c, 14c formed in FIG. 7]
Is carried from the take-out position to the article filling position, where the cartons 10 are filled with the required articles 46. For example, at one side of the cartoner 15, as shown in FIG. 5, an article filling device 48 having a pusher 47 that can move forward and backward in a direction intersecting with the carton transportation direction is installed in parallel, and an article supply source (not shown) is provided. The empty cartons 10 are configured to be filled with the articles 46 supplied from the to the filling apparatus 48 via the pushers 47.

Here, in order to smoothly perform the article filling by the article filling device 48, the side plate 1 in the carton 10 is placed at the article filling position.
Means 49 for expanding the flaps 14, 14 formed on the 2, 2 are provided. That is, as shown in FIG. 6, a holding frame body 50 having a lateral shape is arranged on the frame 16 on the side where the filling devices 48 are arranged in parallel, and the horizontal portion of the holding frame body 50 is arranged.
A pair of rotary actuators 51, 51 are suspended in an inverted state at a predetermined distance from each other at 50a. A spreading plate 52 is disposed on the output shaft 51a of the rotary actuator 51, and both spreading plates 52, 52 are always closed with their open ends in contact with each other. Both of the expanding plates 52, 52 are opened in a double-door shape when rotated in a predetermined direction by the actuators 51, 51, and abut against the facing horizontal flaps 14c, 14c of the carton 10 that has reached the article filling position. The size is set so that it can be expanded.

The holding member 122 supporting the guide member 45 has a sixth
As shown in the figure, a guide rod 123 extending parallel to the carton transport direction is provided. This guide rod 123 functions so that the upper flap 14a formed on the top plate 11 of the carton 10 taken out to the carton take-out position is brought into contact with the upper surface and the upper flap 14a is conveyed in a state in which it is slightly expanded upward. To do. In addition, as shown in FIG.
A guide plate 124 having a required shape is arranged at a position where the open end of the lower flap 14b formed on the bottom plate 13 of the carton 10 transported on the transport rail 44 passes. This guide plate 124
The upper end of the carton in the carton transport direction is formed so as to incline upward toward the upstream side, and the lower flap 14b
To guide the lower surface of the guide plate 124 to convey the lower flap 14a in a state where the lower flap 14a is slightly opened downward.

That is, the flap 14a and the lower flap 14b on the carton 10 desired at the article filling position are supported by the guide rod 123 or the guide plate 124 and slightly expanded vertically from the opening in which the article 46 is filled. , So that it does not hinder the filling of articles. Further, by doing so, it is possible to smoothly fold the lateral flap 14c described later.
The guide rod 123 and the guide plate 124 are in a carton.
Needless to say, they are provided on both sides intersecting with each other with the ten transport paths sandwiched therebetween.

[Horizontal flap 1 formed on side plates 12 and 12 of carton 10
Regarding Folding Mechanisms of 4c and 14c] As shown in FIG. 7, a pair of guides 53 are provided on the frame 16 downstream of the article filling position in the carton transport direction, as shown in FIG. , 53 face above the transport rails 44, 44 in parallel. The distance between the two guides 53, 53 is the length of each plate 11, 12, 13 of the carton 10 (the length between the ends where the flaps 14, 14 are formed).
Is set to be slightly longer than the distance. Therefore,
Both lateral flaps 14c, 14c formed on the side plate 12 on the downstream side of the carton 10 conveyed through the conveying device 108 are folded inward when the carton 10 is introduced between the guides 53, 53.

Here, the lateral flaps 14c, 14c formed on the side plate 12 on the upstream side of the carton 10 are folded outward when the carton 10 is introduced between the guides 53, 53 in this state. Therefore, means 54 and 55 for folding the upstream side lateral flaps 14c and 14c inward are provided on both sides of the transportation rails 44 and 44, which intersect with the carton transportation direction.
First, the folding means 54 located on the side where the article filling device 48 is not disposed will be described.

As shown in FIG. 7, a holding frame body 56 is erected on the frame 16, and a rotary actuator 57 is suspended in an inverted state on a horizontal portion 56a of the holding frame body 56. On the output shaft 57a that hangs downward from the actuator 57, two folding claws 58, 58 projecting in the horizontal direction are vertically arranged at a predetermined interval. Therefore, by biasing the actuator 57 to rotate the output shaft 57a in a predetermined direction, the upstream side flap 14c of the carton 10 can be folded inward by the folding claws 58, 58. Incidentally, the folding claw 58, until the carton 10 is conveyed, the open end of the lateral flap 14c folded by the claw 58 is clamped between the guides 53, 53,
The lateral flap 14c is formed in such a size and shape that it can be held in a folded state.

Next, the folding means 55 on the side where the article filling device 48 is arranged has a different configuration from the folding means 54 on the opposite side because of the arrangement of the filling device 48. That is, as shown in FIG. 6, fixed plates 59, 59 are provided on the outer surface of the transfer rail 44 located on the side facing the filling device 48 at predetermined intervals in the carton transfer direction. A pair of guide rods 60, 60 are arranged in parallel with each other at 59, 59. A moving body 61 is slidably inserted into and supported by both guide rods 60, 60 via slide bearings, and a piston rod 62a of a first pneumatic cylinder 62 is provided on a fixed plate 59 on the downstream side of the moving body 61. Are connected. Therefore, cylinder 6
By urging 2 in the forward and reverse directions, the moving body 61 can slide horizontally along the guide rods 60, 60.

The movable body 61 is provided with a folding bar 64 movably up and down via a parallel link mechanism 63, and the link mechanism 63 is configured to be operated by a second pneumatic cylinder 65 provided in the movable body 61. Has been done. That is, as shown in FIG. 8A, in the state before the second pneumatic cylinder 65 is biased,
The folding bar 64 stands by below the transport rail 44, and when folding the flap 12 on the upstream side of the carton 10,
By urging the second pneumatic cylinder 65 to operate the parallel link mechanism 63, the folding bar 64 is projected above the transport rail 44, as shown in FIG. 8B. Then, in this state, the first pneumatic cylinder 62 is connected to the piston rod.
When the moving body 61 is biased in the direction of pulling it into the barrel, the moving body 61 moves in the carton carrying direction along the guide rods 60, 60.

In addition, the folding of the lateral flap 14c by the folding means 55,
This is performed at the timing when the carton 10 is conveyed from the article filling position to the flap attaching position by the conveying device 108. That is, the moving speed of the folding bar 64 is determined by the transfer device 108.
It is set to be faster than the transportation speed of the carton 10 according to the above, and by this, the lateral flap 14c of the carton 10 being transported can be folded.

On the output shaft 51a of the rotary actuator 51 arranged on the downstream side of the folding means 55, a movable guide 130 is arranged in parallel with the guide 53 at the same level, and the movable guide 30 is folded by a folding rod 64. Side flaps 14
It functions to guide c to the guide 53. Also folding bar 6
4, the stroke of the first pneumatic cylinder 62 is set so that the flap 14c can be held until the open end of the lateral flap 14c folded by the folding rod 64 is supported by the movable guide 130. . It is needless to say that the folding bar 64 does not interfere with the lower flap 14b when the horizontal flap 14c is folded.

[Outline of gluing device 68] As shown in FIG. 9, a gluing device 66 and a pair of gluing parts 6 are provided further downstream of the article filling position in the cartoner 15.
A gluing device 68 consisting of 7,67 (only one of which is shown) is provided, and the gluing parts 67, 67 are configured to feed glue to the lower flaps 14b, 14b formed on the bottom plate 13 of the carton 15. I am doing it.

(Regarding the glue supply device 66) As shown in FIG. 10, on the frame 69 of the speed reducer connected to the motor 27 arranged at an appropriate position of the device frame 16,
A fixed plate 70 is arranged and fixed. A single-acting pneumatic cylinder 71 is horizontally arranged on the back side of the fixing plate 70 (the side facing the speed reducer frame 69), and the piston rod 71
a is projected to the front side of the fixed plate 70. Also fixed plate 70
On the front side of the, a pair of guide rods protruding from the fixed plate 70
A movable member 73 is slidably disposed on the 72, 72, and the piston rod 71a is connected to the movable member 73. Therefore, by biasing the cylinder 71 so that the piston rod 71a extends, the movable member 73 moves in parallel along the guide rods 72,72. In addition, the movable member of the guide rod 72
In the part protruding from 73 to the front side (the side opposite to the fixing plate 70),
A compression spring 74 is inserted via a nut 75 so as to be detachable, and the movable member 73 is always elastically biased by the compression spring 74 in a direction in which it approaches the fixed plate 70. The pneumatic cylinder 71
If it is a return type, the compression longitudinal spring 74 can be omitted.

(About Flexible Hose 77) As shown in FIG. 11, an arc-shaped groove 76 is bored in the front surface of the movable member 73, and the flexible hose 77 is fitted in the groove 76. At one end of this flexible hose 77, a glue supply device
A supply pipe 78 led from a glue tank (not shown) installed above 66 is connected to the flexible hose 77 so that the glue is naturally supplied from the glue tank. The other end of the flexible hose 77 is commonly connected to the discharge pipes 79, 79 extending to the both glued parts 67, 67, and the glue in the flexible hose 77 is discharged to each discharge pipe 79. , 79 can be branched and supplied. The discharge pipe 79 is provided with a flow rate adjusting means (not shown), and the discharge pipe 7 from the glue supply device 66 to the gluing parts 67, 67.
It is configured to prevent the amount of glue supplied from the flexible hose 77 from becoming uneven due to the difference in length of 9,79.

(Regarding Restriction Plate 81) The discharge-side end of the flexible hose 77 faces a groove 125 that branches from the arc-shaped groove 76 and opens to the side of the movable member 73. As shown in FIG. 10, a notch 80 communicating with the back side (fixing plate 70 side) is formed, and
A regulation plate 81 is arranged on the front side thereof. Also, the fixed plate
A pressing member 82 is projected at a position corresponding to the notch 80 in the 70, and the flexible hose 77 is set so as to be sandwiched between the pressing member 82 and the restriction plate 81 at the discharge end. That is, in the state where the movable member 73 is close to the fixed plate 70 under the elastic action of the compression spring 74, the flexible hose 77 is crushed by the restriction plate 51 and the pressing member 82, The supply of glue to the discharge pipe 79 is blocked. Further, when the movable member 73 is moved to the front side by the cylinder 71,
As shown in FIG. 10, since the regulation plate 81 is separated from the pressing member 82, the flexible hose 77 is restored to a shape that allows passage of glue.

(Regarding Roller 62) Below the fixed plate 70 and the movable member 73, as shown in FIG. 10, a rotary shaft 83 protruding from the speed reducer frame 69 faces, and a support member is provided at the tip of the rotary shaft 83. 84 is arranged so as to be integrally rotatable. Further, the support member 84,
A roller 86 is attached to a vertical shaft 85 facing the front side of the movable member 73.
Is rotatably supported, and the roller 86 functions to push out the adhesive in the flexible hose 77 fitted in the arcuate groove 76 from the supply side to the discharge side. The rotating shaft 83 is always rotating, and the position of the roller 86 arranged on the supporting member 84 is always set by the encoder 126 arranged to detect the rotation of the rotating shaft 83, as shown in FIG. It is supposed to be detected.

That is, as shown in FIG. 11, the roller 86 rotates on the same track as the arcuate groove 76 on the front surface of the movable member 73 from the glue supply side to the discharge side of the flexible hose 77 (FIG. 11). Counterclockwise). The roller 86 is provided with a groove 76 as shown in FIG. 12 only when the movable member 73 is moved to the front side by the pneumatic cylinder 71.
The flexible hose 77 facing inside is positioned so that it can be crushed. Therefore, it is understood that when the roller 86 rotates counterclockwise in this state, the flexible hose 77 is squeezed and the internal glue is pushed out to the discharge side.

(Regarding the guide plate 87 of the gluing part 67) As shown in FIG. 9, a discharge pipe 79 derived from the gluing device 66.
The sizing part 67 extending from the bottom plate 13 in the carton 10
Basically, it is composed of a pair of guide plates 87, 87 which are vertically opposed to each other with the passage of the lower flap 14b formed in between. In this guide plate 87, as shown in FIG. 10, a slit 87a parallel to the carton conveying direction is formed at a center in the width direction by a predetermined length, and the discharge pipe 79 has slits 87a of both guide plates 87, 87. The discharge port is directed toward the downstream side of 87a. Therefore, the lower flap 14b is provided between the two guide plates 87, 87.
When the gas passes through and comes into contact with the discharge pipe 79, the discharge port of the discharge pipe 79 is pushed upward and faces the upper surface of the lower flap 14b.

In addition, a sensor is attached to the device frame 16 in the vicinity of the gluing portion 67
A sensor 127 is provided, and the sensor 127 is configured to detect that the lower flap 14b has entered between the guide plates 87, 87. Therefore, when the glue is supplied to the discharge pipe 79 by the glue supply device 66 at a required timing when the sensor 127 detects the entry of the lower flap 14b into the glued portion 67, the glue is discharged from the discharge port to the flap 14. To be done. The end of the guide plate 87 that is directed toward the upstream side in the carton transport direction is bent in a direction away from the passage of the lower flap 14b, and the lower flap 14b
It is configured so that b can be surely introduced between the two guide plates 87.

(Regarding Means for Preventing Adhesive Drying of Adhering Unit 67) Here, it is expected that the ejection port of the ejection pipe 79 will be exposed to the atmosphere and the adhesive inside will be dried. Therefore, below the gluing portion 67, a holder 89 that is opened upward and is filled with a sponge 88 is disposed, and as shown in FIG. 10, the discharge port of the discharge pipe 79 is always the sponge 88. It is configured to contact. Therefore, if the sponge 88 is made to contain water, it is possible to effectively prevent the glue in the discharge port of the discharge pipe 79 from being dried while waiting for gluing.

[Upper and lower flap folding device for carton 10] As shown in FIG. 1, the top plate 11 of the carton 10 is located on the most downstream side of the cartoner 15 (flap storage position).
Devices 90, 91 for folding the upper flap 14a formed on the bottom plate and the lower flap 14b formed on the bottom plate 13 are provided. In addition,
Since the top plate 11 and the bottom plate 13 of the carton 10 are formed with the flaps 14 and 14 on the left and right, respectively, the folding devices 90 and 91 sandwich the conveyance rails 44 and 44, respectively, on both sides intersecting the carton conveyance direction. Although these devices are respectively arranged, since all of these devices are symmetrical, only the device shown on the near side in FIG. 1 will be described.

(Regarding Folding Device 90 for Upper Flap 14a) As shown in FIG. 6, in the vertical portion 50b located on the downstream side of the holding frame body 50 in which the flap expanding means 49 arranged at the article filling position is arranged, A support plate 92 is arranged, and a drive rod 93 facing the above-mentioned transport rail 44 in parallel is pivotally supported on the support plate 92 so as to be rotatable. One end of a plurality of (three in the embodiment) presser plates 94 are fixed to the drive rod 93 at predetermined intervals in the axial direction, and the other end of the presser plates 94 is, as shown in FIG.
The size is set so as to face above the upper flap 14a of the carton 10 transported to the flap attaching position by the transport device 108.

A cylinder bottom of a pneumatic cylinder 95 is pin-pivotally attached to the support plate 92, and a piston rod 95a of the cylinder 95 is a protrusion provided in a direction opposite to the extending direction of the holding plate 94 of the drive rod 93. Pin 96 is pivotally attached to the pin. Therefore, by biasing the cylinder 95 in the forward and reverse directions, the pressing plate 94 rotates about the drive rod 93 by a required angle. That is, thirteenth
In the illustrated embodiment, the piston rod 95a of the cylinder 95 is
When pressing the plate in the direction to pull it into the casing, presser plate
The upper flap 14a can be folded downward by rotating 94 in the clockwise direction.

As shown in FIG. 13, the support plate 92 is provided with a bulging member 128 that faces above the transport rail 44, and the bulging member 128 has a guide that inclines downward toward the downstream side in the carton transport direction. A rod 129 is hung. The guide rod 129 is configured so as to come into contact with the upper surface of the upper flap 14a of the carton 10 conveyed on the conveyance rail 44 and to be able to slightly bend it downward. That is, by bending the upper flap 14a downward, when the lateral flaps 14c, 14c folded by the guides 53, 53 arranged on the downstream side of the article filling position are separated from the guides 53, 53. It is possible to prevent the spread. The guide rod 129 also has a function of guiding the upper flap 14a to the lower side of the pressing plate 94.

(Regarding the folding device 91 of the lower flap 14b) A support base 97 is horizontally projected on the outer surface of the transfer rail 44, and a drive shaft 98 parallel to the carton transfer direction is mounted on the support base 97.
Is rotatably supported, and a push-up plate 99 is integrally rotatably fixed to the drive shaft 98. As shown in FIG. 13, the push-up plate 99 is positioned so as to face below the lower flap 14b of the carton 10 which has reached the flap attaching position. The drive shaft 98 is provided with a pinion 100,
The pinion 100 meshes with a rack 102 connected to a piston rod 101a of a pneumatic cylinder 101 installed on a support base 97. Therefore, by pushing the cylinder 101 in the forward and reverse directions, the push-up plate 99 rotates within a required range.

That is, after the upper flap 14a formed on the top plate 11 is folded, the pneumatic cylinder 101 is urged to rotate the push-up plate 99, whereby the lower flap 14b formed on the bottom plate 13 is folded upward. With the gluing device 68, the surface to which the glue is attached can be attached to the upper flap 14a. The push-up plate 99 has a notch corresponding to the position where the presser plate 94 is arranged.
99a is formed (see FIG. 16 (f)) so that the pushing plate 99 does not interfere with the holding plate 94 in which the upper flap 14 is folded.

[Regarding the carton storage section 103] Next, the upper and lower flaps 14a,
A storage unit 103 for storing a required number of rectangular cartons 10 to which 14b is attached is arranged. The storage portion 103 is formed in a tower shape having a rectangular space that allows the carton 10 to be inserted therein, and at the lower end portion serving as a carton carry-in port, as shown in FIG. Latch 10 that rotates only in the direction that allows loading of carton 10 from
4 are arranged. Further, as shown in FIG. 5, a lifter 106, which is driven up and down by a pneumatic cylinder 105, is arranged below the flap attaching position, facing the conveying rails 44, 44, and the flap 14 is attached. The carton 10 is loaded into the storage section 103 from below by the lifter 106. And the carton 1 inserted in the storage section 103
0 is held by the latch 104 without dropping.

As shown in FIG. 1, a discharge pusher 107 extending in parallel with the transport rail 44 is disposed above the storage section 103, and the cartons are sequentially loaded into the storage section 103 from below and arrive at the top. 10 is configured to be discharged to the outside of the machine by a discharge pusher 107. In addition, the carton 10 loaded into the storage unit 103 has the upper and lower flaps 14 attached thereto.
It is designed to be stored with the a and 14b sides sandwiched from both sides. Therefore, while the carton 10 is carried in from below the storage portion 103 and discharged to the outside by the discharge pusher 107, the upper and lower flaps 14a and 14b are completely attached.

[Outline of Carton Conveying Device 108] Between a pair of conveying rails 44, 44 arranged at a predetermined interval in the conveying direction of the carton 10, a carton formed into a box shape by expanding into a rectangular tube shape. A device 108 for transporting 10 is provided. The carrying device 108 is provided with the carton 10 taken out from the hopper 17 by the carton take-out forming device 22.
Is conveyed from the take-out position to the article filling position, and the carton filled with the articles 46 at the article filling position.
10 is further conveyed to the flap attaching position.

(Regarding Mobile Unit 110) As shown in FIG. 14, first guide rails 109 each having a predetermined length are provided on the facing surfaces of the transport rails 44, 44, respectively.
A movable body 110 is slidably arranged along the first guide rail 109. The pair of movable bodies 110, 110 slidably arranged on the first guide rails 109, 109 are connected via a connecting rod 111 so as to be integrally movable. One end of a first rod 112 is pivotally attached to the connecting rod 111, and the first rod 112 extends toward the upstream side in the carton conveying direction, and this end portion pivots at the lower end portion of the apparatus frame 16. It is pivotally attached to the upper end of a link rod 113 which is freely pivoted.

One end of a second rod 114 is clevis-connected to a substantially middle portion of the link rod 113, and the other end of the second rod 114 has a first end.
As shown in FIG. 4, the disk 28 rotatably driven by the motor 27 is pivotally supported on the side opposite to the side on which the groove cam 29 is formed. Therefore, when the disk 28 rotates in a predetermined direction, the swing motion is imparted to the link rod 113 via the second rod 114, which causes the moving bodies 110, 110 to move to the first guide rails 109, 1.
It is understood that it will move back and forth along 09.

(Regarding the First Arm 116) As shown in FIG. 1, the moving body 110 is provided with a mounting member 115 that extends a predetermined length on the upstream side in the carton transport direction, and at the tip of the mounting member 115, A first arm 116 protruding upward from the transport rail 44 is provided. The first arm 116 is a carton taken out by the carton take-out molding device 22 when the moving body 110 is most retracted.
The length dimension of the mounting member 115 is set so as to face the upstream side of 10. Further, the moving stroke of the moving body 110 is such that the carton 10 facing the carton take-out position when the moving body 110 is most advanced is conveyed to the article filling position as shown in FIGS. 15 (a) and 15 (b). It is set to be able to do. That is, the first arm 116 contacts the rear portion of the carton 10 formed in the box shape by the carton take-out forming apparatus 22 and functions to convey the carton 10 to the article filling position.

(Regarding Second Arm 117) At the front end of the moving body 110, as shown in FIG. 14, an L-shaped second arm 117 is arranged so that it can be retracted from the upper surface of the transport rail 44 by a mechanism described later. It is set up. The second arm 117 projects to the upper surface of the transport rail 44 only when the moving body 110 moves forward, and transports the carton 10 transported to the article filling position by the first arm 116 to the flap attaching position. Function.

The second arm 117 is provided on the transport rail 44 of the moving body 110.
It is rotatably supported at one end opposite to the horizontal tip of the horizontal first piece 117a. Also, this second arm 11
The roller (engaging portion) 11 protruding toward the transport rail 44 is provided at the continuous portion of the horizontal first piece 117a and the vertical second piece 117b in FIG.
8 is rotatably supported. Further, on the side surface of the transport rail 44, as shown in FIG. 15A, a second guide rail 119, which is shorter than the first guide rail 109, is provided at a position spaced apart from the first guide rail 109 by a predetermined distance. The second arm 117 is configured to be movable along the first guide rail 109 or the second guide rail 119 via the roller 118.

It should be noted that the second piece 117b of the second arm 117 is configured so that when the roller 118 is mounted on the first guide rail 109, the transport rail 44
The roller 118 is dimensioned so that it will settle out of the transport rail 44 when the roller 118 rests on the second guide rail 119.

At a position near the rear end of the second guide rail 119 on the transport rail 44, as shown in FIG. 14, the magnet 120 is arranged above the upper surface of the second guide rail 119 (moving surface of the roller 118). It is set up. The magnet 120 is provided on the roller 118 of the second arm 117 that has moved along the first guide rail 109.
Is magnetically attracted in a state of being separated upward from the first guide rail 109, and when the moving body 110 is advanced again in this state,
It functions to transfer the roller 118 to the second guide rail 119. In addition, the second arm 117 magnetically attracted to the magnet 120.
Needless to say, as shown in FIG. 15 (c), it projects from the transport rail 44 on the upstream side of the carton 10 transported to the article filling position.

That is, when the moving body 110 is most advanced, the roller 118 of the second arm 117 moves to the first position as shown in FIG. 15 (b).
It is mounted on the guide rail 109. In this state, the moving body 110
When is retracted, the second piece 117b of the second arm 117 is retracted along the first guide rail 109 while being settled down from the transport rail 44. Then, when the moving body 110 is most retracted, the second
The roller 118 of the arm 117 is magnetically attracted upward by the magnet 120 and is ready to be transferred to the second guide rail 119. Therefore, if the moving body 110 starts to move forward as it is, the roller 118 attracted to the magnet 120 is moved to the position shown in FIG.
As shown in (d), it moves along the second guide rail 119, and at this time, the second piece 117b projects from the transport rail 44 to transport the carton 10.

It should be noted that the roller 118 of the second arm 117 has the first roller 118 on the transport rail 44 separated from the rear end of the second guide rail 119 by a predetermined distance.
A guide rail 121 having an arcuate guide surface that guides upward when the vehicle retreats along the guide rail 109 is provided. As a result, when the moving body 110 is retracted, the roller 118 that moves the guide rail 121 on the arcuate guide surface is moved to the magnet 12
It is set close to 0 so that the magnet 120 can easily attract it.

Operation of Embodiment Next, the operation of the carton carrier according to the embodiment having the above-described configuration will be described in relation to the operation of the entire cartoner.

(State before starting operation of Cartoner) As shown in FIG. 3 and FIG.
The flatly folded carton 10 is attached to each support member 18,18.
The roller 32 is mounted on the roller 32, and both ends of the flap side of the roller 32 are positioned by the restricting members 19, 19.
Further, the carton take-out molding apparatus 22 stands by at the lowest position and stops, and the pneumatic cylinders 40, 40 extend their piston rods 40a, 40a greatly to separate the holding members 38, 38 facing each other from each other. ing. In this state,
The tip of the horizontal portion 35a of the take-out means 35 is set so as to be positioned directly below the upper flap 14a formed on the top plate 11 of the carton 10.

Further, as shown in FIG. 15 (a), the transfer device 108 waits for the movable bodies 110, 110 to stop at the rearmost position and wait for the first arm 116 to move.
Is exposed to the upstream side of the carton take-out position, and the second arm 117 is projected from the transport rail 44 upstream of the article filling position in a state where the roller 118 is magnetically attracted to the magnet 120. Further, the movable member 73 of the gluing device 68 is located close to the fixed plate 70 under the elastic force of the compression springs 74, 74, and the roller 86 rotated by the motor 27 is a flexible hose 77 in the arcuate groove 76. It will not come into contact with. In addition, the folding means 54, 55, 90, 91 of each flap 14 of the carton 10,
They are evacuated from the carton transportation route respectively.

(Regarding Carton Removal by Carton Removal Molding Device 22) When the motor 27 is driven to rotate the disk 52 clockwise, the rotation of the disk 28 causes a cam motion of the roller 31 fitted to the groove cam 29. Is given. As a result, the crank arm 30 swings around the pin 33, and the support members 25, 25 are connected to the first member via the rod 34 connected to one end of the arm 30.
As shown in FIG. 6B, the guide rods 24, 24 are raised by a predetermined height.

When the supports 25, 25 are raised to the uppermost position, the horizontal parts 35a, 35a of the two take-out means 35, 35 facing each other are moved to the hopper.
The upper flaps 14a, 14a of the carton 10 placed on 17 are brought into contact with the ends of the upper flaps 14a, 14a from below, and the flaps 14a, 14a are slightly lifted. As a result, a required gap is formed between the top plate 11 and the bottom plate 13 of the folded flat carton 10 to allow the insertion of each horizontal portion 35a.

As the disk 28 rotates, the link rod 113 is oscillated by the second rod 114, which causes the moving body 110 of the transfer device 108 to move as shown in FIG. 15 (b). , And moves forward along the first guide rail 109. Further, in the second arm 117, the roller 118 has the second guide rail 11
Since it is mounted on 9, it moves while protruding from the transport rail 44.

As described above, both take-out means of the carton take-out molding device 22
35, 35 synchronously urge the cylinders 40, 40 at the timing when the flaps 14a, 14a on the carton 10 are slightly lifted, causing each piston rod 40a to retract into the cylinder tube. As a result, both holding members 39, 39 move closer to each other along the guide rods 36, 36, and the horizontal portions 35a, 35a of the take-out means 35, 35 are attached to the top plate 11 of the carton 10.
And the bottom plate 13 is inserted.

Next, after the horizontal portions 35a, 35a are inserted into the space of the carton 10, the disk 28 is further rotated, so that the supports 25, 25 at the highest point roll down. This support 25,25
Along with the descending, the take-out means 35, 35 also begin to descend integrally. For this reason, the horizontal portions 35a, 35a inserted in the gaps of the carton 10 push down the bottom plate 13 of the carton 10, whereby the carton 10 can be moved to the above-mentioned each as shown in FIG. 16 (c). It separates from the roller 21 and is taken out below the hopper 17. Further, in the process in which the carton 10 is taken out below the hopper 17, the front end bottom portion (side plate 12) of the carton 10 contacts the guide member 45, and the carton 10 is restricted from moving rearward by the restriction plate 43. Therefore, the carton 10 is finally placed on the transfer rails 44, 44 in a state of being expanded into a rectangular tube shape.

When the supports 25, 25 reach the bottom, the motor 27
Encoder 12 that detects the rotation of rotating shaft 83
By detecting this by 6 (detecting one rotation of the rotary shaft 83), the cylinders 40, 40 are reversely biased, and the take-out means 35,
The horizontal portions 35a, 35a of 35 are separated from each other. At this time, the transport device 108 is retracted most so that the first arm 116 faces the upstream side of the carton 10 (see FIG. 16 (c)).

(Operation of Conveying Device 108) When the moving body 110 moves forward again due to the rotation of the disk 28 in the above-described state, the carton facing the carton take-out position.
As shown in FIG. 16 (d), 10 is transported to the article filling position by the first arm 116. The second arm 117 that moves while protruding from the transport rail 44 when the moving body 110 advances.
When the mobile units 110, 110 arrive at the foremost end position, the
As shown in FIG. 6B, the roller 118 is disengaged from the end of the second guide rail 119 and settles on the first guide rail 109. As a result, the second arm 117 sinks from the transport rail 44.

When the movable body 110 is moved backward through the crank rod 113 due to the continuous rotation of the disk 28, the second arm 117 is settled down from the transport rail 44, so that the second arm is placed on the carton 10 facing the article filling position. 117 retreats without touching.
Then, when the moving body 110 retreats to the rearmost position in this state, the roller 1 that was moving along the first guide rail 109.
As shown in FIG. 15 (c), 18 moves to the arc-shaped guide surface of the guide rail 121 and rises, and reaches below the magnet 120. As a result, the roller 118 is attracted and held by the magnet 120, and the second piece 117b is projected from the transport rail 44.

At this time, the carton 10 is taken out by the carton take-out molding device 22 at the carton take-out position, and the carton 10 previously conveyed by the first arm 116 faces the article filling position. Therefore, when the moving body 110 moves forward again, as shown in FIGS. 15 (d) and 16 (e), the carton 10 facing the article filling position is moved to the second arm 11.
The carton 10 which is conveyed to the carton 7 and which faces the carton take-out position is conveyed by the first arm 116. As described above, since the second arm 117 is settled down from the transport rail 44 when the moving body 110 retracts, the cartons 10 transported to the article loading position during this time can be filled with the articles 46.

(Item Filling Operation) As shown in FIG. 8 (a), when the carton 10 is transported to the article loading position via the transport device 108, an appropriate sensor detects this and the lateral flaps 14c, 14c are expanded. The rotary actuators 51, 51 of the opening means 49 are urged to rotate in a double-opening manner that separates the expansion plates 52, 52 from each other to expand the lateral flaps 14c, 14c. Then, the pusher 47 of the article filling device is urged to fill the carton 10 with the article 46 previously supplied from a supply source (not shown).

The carton 10 filled with the articles 46 is transported further downstream by the second arm 117 of the transport device 108. At this time, the carton 10 is moved to the transport rail 4 as shown in FIG.
It is introduced between the guides 53, 53 facing the upper side of 4, 44, whereby the lateral flaps 14c, 14c on the downstream side are folded inward. Further, the upstream side lateral flaps 14c, 14c are folded inward via the folding means 54, 55, respectively, and in this state, they are introduced into the guides 53, 53 and conveyed to the flap attaching position.

(Operation of the gluing device) As described above, the carton 10 in which the horizontal flaps 14c, 14c are folded inward, is being conveyed to the flap attaching position,
The lower flap 14b passes through the gluing part 67. At this time, the sensor 127 arranged in proximity to the gluing section 67 detects this, and the pneumatic cylinder 71 of the gluing device 66 is urged. Then, the movable member 73 is pushed forward along the guy rods 72, 72 while resisting the elasticity of the compression springs 74, 74.

Since the support member 84 is rotated by the motor 27,
By moving the movable member 73 to the front side, the support member 84
The roller 86 disposed in the above enters the groove from one end of the arc-shaped groove 76 and moves in the groove while crushing the flexible hose 77 facing the groove 76, as shown in FIG. As a result, the glue that has been supplied to the flexible hose 77 via the supply pipe 78 is extruded to the discharge side inside the flexible hose 77 as the roller 86 moves. This glue is diverged and supplied to the discharge pipes 79, 79, and the carton 10 is discharged from the discharge port facing the gluing part 67.
Is discharged to the lower flap 14b.

When the carton 10 is further conveyed and the lower flap 14b is separated from the gluing portion 67, the urging of the cylinder 71 is released. As a result, the movable member 73 is moved toward the fixed plate 70 by the return elasticity of the compression springs 74, 74, and the supply of the glue is stopped by the roller 86.

(Folding operation of the upper and lower flaps in the carton) When the carton 10 to which the glue is applied as described above is conveyed to the flap attaching position as shown in FIG. 16 (f), an appropriate sensor detects this and first Flap 14a
Pneumatic cylinder 95 in the folding device 90 to fold the
And presser plate 92 is rotated via drive rod 93. As a result, as shown in FIG. 13, the upper flap 14a that faces the lower side of the pressing plate 92 is folded downward. Then folding device 9
The pneumatic cylinder 101 of 1 is biased to rotate the push-down plate 99 under the meshing action of the rack and pinion.
The lower flap 14b is folded upward, and the glue-attached surface of the lower flap 14b is attached to the outer surface of the upper flap 14a.

Then, the carton 10 to which the flap 14 is attached is carried into the storage section 103 arranged above the flap attaching position via the lifter 106. The carton 10 carried into the storage section 103 has the upper flap 14a and the lower flap 14b completely adhered by the time it is discharged from the storage section 103.
This can prevent the flap 14 of the carton 10 after being discharged from being easily peeled off.

As described above, according to the carton carrier of the present invention, the moving body including the first arm and the second arm is reciprocated, and the second arm is settled from the carrying surface of the carton when the moving body retreats. Since it is configured to do so, the carton transported by the second arm can be stopped while the moving body moves backward. That is, the carton can be conveyed intermittently and the articles can be filled while the carton is stopped at a predetermined position. Therefore, it is not necessary to dispose the filling device having a complicated structure in parallel with the transfer device, and the structure of the transfer device is simple, so that the cost can be extremely reduced. Further, since the transport device itself can be made compact, there is an advantage that the installation space can be made small.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a part of a cartoner adopting the carton conveying device according to the present invention in a longitudinal section, and FIG. 2 is a side view showing a main part of a carton take-out molding device constituting the cartoner shown in FIG. FIG. 3 is a front view of the carton take-out molding apparatus shown in FIG. 2, FIG. 4 is a schematic perspective view of the carton take-out molding apparatus, and FIG. 5 is an explanatory plan view showing the cartoner shown in FIG. FIG. 6 is a side view of a main part showing a lateral flap expanding means and a folding means of a carton and a folding device for the upper and lower flaps, and FIG. 7 is an explanatory view showing a cross section of the main part of the cartoner, and FIGS. FIG. 9C is an operation explanatory view showing the operation of the lateral flap expanding means and folding means of the carton over time, FIG. 9 is a side view of the main part of the gluing device constituting the cartoner, and FIG. FIG. 11 is a perspective view showing a schematic configuration of the gluing device shown in FIG. Fig. 12 is a front view of the glue supply device in the attachment device, Fig. 12 is a cross-sectional view of Fig. 11, Fig. 13 is a front view of the folding device for the upper and lower flaps shown in Fig. 6, and Fig. 14 is a carton according to the present invention. A perspective view showing a schematic configuration of a transfer device,
FIGS. 15 (a) to 15 (d) are operation explanatory diagrams showing the operation of the carton transport device with time, and FIGS. 16 (a) to 16 (f) are operation explanatory diagrams showing the operation of the cartoner with time, and FIG. (A),
(B) is a schematic explanatory drawing which shows a carton. 10 …… Carton, 44 …… Conveying rail 109 …… First guide rail 110 …… Mobile body, 116 …… First arm 117 …… Second arm 119 …… Second guide rail

Claims (2)

[Claims] 1. A device for transporting a box-shaped carton (10) placed on a pair of transport rails (44, 44) arranged in parallel at predetermined intervals, the transport rails (44, 44) facing each other. The first guide rail (109) and the second guide rail (119), which are respectively arranged on the surfaces and extend vertically at a predetermined interval and extend in parallel, and slide on the first guide rail (109, 109) located below the first guide rail (109). A movable body (110, 110) that is movably arranged and is capable of reciprocating along the rail (109, 109), and an upper surface of the transport rail (44, 44) that is arranged at an appropriate position of the movable body (110). A first arm (116) projecting a predetermined height from the first arm (116) and a pivotally rotatably supported position at which the first arm (116) of the movable body (110) is located downstream of the first arm (116) in the carton transport direction. And a second arm (117) that opposes the transfer rail (44) of the second arm (117). When the movable body (110) is moved forward, the second arm (117) is engaged with the upper second guide rail (119) to move the second arm (117) to the upper surface of the transport rail (44). When the movable body (110) is moved backward, the second arm (117) is engaged with the lower first guide rail (109) to move the second arm (117) from the upper surface of the transport rail (44). When the moving body (110) moves forward, the first arm (116) and the second arm (117) respectively project from the transport rail (44). When the carton (10) is transported and then the moving body (110) retracts, the second arm (117) sinks from the transport rail (44) and is transported by the first arm (116). ) Is configured so that it does not interfere with the carton carrier. 2. A magnet (120) is arranged at a position of the carrier rail (44) facing a rear end portion of a second guide rail (119), and the carrier rail (44) of the second arm (117).
When a roller (118) capable of magnetic attraction is arranged on one side facing with the second arm (117) retracted along with the moving body (110), it comes under the magnet (120). , The roller (118) mounted on the first guide rail (109) is attracted to and held by the magnet (120), so that the roller (11) is
8. The carton carrier according to claim 1, wherein the second guide rail ((119)) can be mounted on the second guide rail (8).