JPH07102632B2 - Arrangement and supply device for corrugated cardboard sheets for box making - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box making machine, a corrugated board caser or the like, and a feeding device for separating and feeding a plurality of corrugated board sheets, which are stacked in a forward tilted direction in the transfer direction, toward the box making apparatus one by one. It is about.

[0002]

2. Description of the Related Art A box-making machine, a cardboard caser, or the like for assembling a corrugated cardboard sheet that is folded in a plane into a box-like box is made up of a plurality of corrugated cardboard sheet groups that are stacked in a substantially upright state. It is equipped with a device for supplying the sheets one by one. As this supply device, for example, JP-A-55-
Those disclosed in JP-A-41299 and JP-A-55-64025 are preferably adopted. In any of these devices, a folding corrugated cardboard sheet is stacked in a substantially upright state on a supply unit having an inclined supply path, and a corrugated cardboard sheet facing the front end side in the supply direction of this corrugated cardboard sheet group is provided with an extraction device equipped with an adsorption member. It is configured to supply one by one to the box making device via the above. Further, the corrugated board sheet group is always urged from the rear side to the front side in the supply direction by a weight arranged in the supply section, so that the corrugated board sheet on the front end side faces a predetermined take-out position.

[0003]

In the above-mentioned conventional feeding device, when a new corrugated board sheet is replenished when the corrugated board sheet in the feeding section is consumed and reduced, the rear end of the remaining corrugated board sheet group is replenished. It is necessary to evacuate the weights located in the section, and there is a drawback that the replenishment work becomes complicated. Further, in the case of a folded corrugated cardboard sheet, since it is constructed by laminating from one sheet, the thickness dimensions of the left and right end portions with respect to the supply direction are different, and in the stacked state, the corrugated cardboard sheets are not adhered to each other. Will be transferred through the supply path while being inclined to the side. In this case,
Since the corrugated cardboard sheet is not parallel to the suction member of the take-out device, it is not possible to reliably hold the corrugated cardboard sheet by the suction member, resulting in a problem of sheet supply failure.

Further, since the corrugated paperboard sheets are replenished to the supply section by manual work, the corrugated paperboard sheets are often stacked in a state where they are not aligned with each other. In this case, as described above, the suction member is used. It is also pointed out that it is difficult to surely hold due to the above-mentioned problem, resulting in defective supply. Therefore, when replenishing the corrugated board sheets, it is necessary to place a plurality of corrugated board sheets on the supply unit in a state of being aligned with each other, which is an extremely complicated work.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned various kinds of drawbacks inherent in the corrugated board sheet feeding device, and it is proposed that the corrugated board sheet group is used as a sheet. It is an object of the present invention to provide a supply device that can reliably take out sheets one by one and that can perform a sheet replenishing work extremely easily.

[0006]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and achieve a desired object, the present invention relates to a box making device for assembling corrugated cardboard sheets in a box shape, and a corrugated cardboard sheet group accumulated in an accumulating section. In a supply device for picking up and supplying sheets one by one from a sheet, a pair of left and right transfer means which are arranged in parallel at a predetermined interval and driven individually by independent drive means, and downstream of the transfer means in the traveling direction. Located on the side,
A take-out device provided with a plurality of adsorbing means symmetrically arranged on both sides of the cardboard sheet transfer center, and capable of moving the adsorbing means to a take-out position and a discharge position of the cardboard sheet;
The pair of transfer means comprises a determination means for determining whether or not the corrugated cardboard sheet is suction-held by each of the left and right suction means, and individually controlling the operation of the corresponding left and right drive means based on the determination result. When the corrugated cardboard sheet that is placed in a forward leaning posture intersecting the traveling direction on the means is transferred toward the suction means facing the take-out position, the determination means confirms the suction of the corrugated board sheet by the suction means. During this period, the corrugated cardboard sheet is continuously transported by the corresponding transporting means.

[0007]

The corrugated cardboard sheet group placed on the pair of transfer means in a forwardly inclined posture so as to intersect the traveling direction thereof is transferred in parallel toward the sheet take-out position by the synchronous drive of both transfer means. Since the suction means of the take-out device faces the sheet take-out position, the corrugated board sheet on the front end side of the corrugated board sheet group comes close to the suction means. At this time, the suction state of each of the suction means arranged on the left and right with the transport center of the corrugated board sheet sandwiched therebetween and the suction state of the corrugated board sheet are respectively determined by the corresponding determination means. Then, the corrugated cardboard sheet is continuously transported by the corresponding transporting means until each determining means confirms the suction state, and the transporting means is stopped and controlled when each determining means confirms the suction between the suctioning means and the corrugated board sheet. It Next, the pick-up device is urged to retract the suction means to the sheet discharging position, and then the suction-holding of the corrugated board sheet by the suction means is released, whereby the corrugated board sheet is supplied to the box making device.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an apparatus for aligning and supplying corrugated board sheets for box making according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments. FIG. 1 is a schematic perspective view showing a box making machine that employs the alignment supply device according to the embodiment.
For convenience of description, "left and right" refers to a direction intersecting the corrugated board sheet transfer direction.

(Regarding Overall Structure of Box Making Machine) As shown in FIG. 1, a box making machine 10 is disposed on an upper portion of a machine frame 11 formed in a rectangular shape, and a plurality of corrugated cardboard sheets folded in a plane. 1
An aligning and feeding device 16 provided with transfer means 13 and 14 for transferring 2 and a take-out device 15 for taking out the sheets one by one from the front end side (downstream side in the transfer direction) of the corrugated board sheet group, and is arranged inside the machine frame 11. The box making device 1 for assembling the corrugated cardboard sheet 12 supplied from the aligning and supplying device 16 into a box shape
7, and the packaging box assembled by the box making device 17 is transported to the downstream side while holding its side portion, and is transported by the transfer conveyor 18 and the conveyor 18 for discharging from the machine. Box sealing device 6 for sealing the bottom of the packaging box in between
It is basically composed of 6 and 6.

(Regarding Transferring Means of Aligning and Supplying Device) As shown in FIG. 5, a pair of chain conveyors extending along the longitudinal direction (transporting direction of the corrugated cardboard sheet 12) are provided above the machine casing 11. The transfer means 13 and 14 are arranged in parallel in the lateral direction at a predetermined distance. Then, the plurality of corrugated cardboard sheets 12 folded in a plane are placed on the chain conveyors 13 and 14 in a state of intersecting the conveyor traveling direction and leaning forward in the traveling direction. Is driven to feed the corrugated board sheet group 12 and supply the corrugated board sheet 12 on the front end side to the sheet take-out position (described later). Since the structure of the chain conveyors 13 and 14 is the same, only the structure of one (upper side in FIG. 5) chain conveyor 14 will be described, and the same members of the other chain conveyor 13 are designated by the same reference numerals.

As shown in FIG. 2, a movable frame 20 constituting the chain conveyor 14 is installed between horizontal upper stays 19 and 19 arranged at both ends of the machine frame 11 in the longitudinal direction. Machine frame 11 by the mechanism described later
It is configured to be movable in the lateral direction. Sprockets 21 and 22 are rotatably supported at both ends of the moving frame 20 in the longitudinal direction, and both sprockets 21 and 2 are rotatably supported.
An endless chain 23 is wound between the two. The upper transport surface of the endless chain 23 projects from the upper surface of the moving frame 20, and is set so that the corrugated cardboard sheet 12 placed on the endless chain 23 can be transferred by traveling of the chain 23. The sprocket 22 on the downstream side in the sheet transfer direction
Is fixed to the machine frame 11 in parallel with the upper stay 19, and is pivotally supported by a fixed shaft 24 (described later) that is commonly inserted in the moving frames 20, 20.

As shown in FIG. 1, the sprocket 21 on the upstream side of the corrugated board sheet 12 in the transfer direction is rotatably driven by a drive motor 25 provided on the moving frame 20. That is, the left and right chain conveyors 1
The motors 3 and 14 are driven and driven by independent drive motors 25 and 25, respectively. As a result, by synchronously traveling the chain conveyors 13 and 14, the corrugated cardboard sheet group placed on the endless chains 23 and 23 in a posture inclined forward in the traveling direction is transferred in parallel without changing the posture. be able to. In addition, by running only one of the left and right chain conveyors 13 (14),
In the corrugated cardboard sheet group, only the end side placed on one endless chain 23 is transferred to the corrugated cardboard sheet 12
You can also change the posture of.

(Regarding Spacing Adjustment Mechanism of Moving Frame) Above each of the upper stays 19, as shown in FIG. 5, a reverse screw shaft 26 parallel to the stays 19 is rotatably supported by the machine frame 11. The reverse screw portion formed symmetrically on the reverse screw shaft 26 with the center in the axial direction sandwiches the corresponding moving frames 20, 2
It is screwed into nuts 27, 27 fixed to 0. Further, the reverse screw shafts 26, 26 are synchronously rotated in the forward and reverse directions on the machine frame 11 via a connecting means (neither is shown) composed of a sprocket-chain driven by a rotating handle or a motor. An adjusting means for obtaining is provided. Therefore, by rotating the counterscrew shafts 26, 26 by the adjusting means, the pair of moving frames 20, 20 are kept parallel to each other under the counterscrew action of the counterscrew shafts 26, 26.
1 move toward and away from each other in the lateral direction. As a result, when the dimension of the corrugated board sheet 12 in the width direction (direction intersecting with the transfer direction) is changed, both moving frames 20,
By moving 20 the cardboard sheet 12
The endless chains 23, 23 can be exposed near the left and right ends of the chain.

On the outside of the moving frame 20 (on the side away from the other moving frame 20), the moving frame 2
A guide bar 28 extending parallel to 0 is disposed so as to face above the transport surface of the endless chain 23. The guide bar 28 guides the left and right ends of the corrugated cardboard sheet group transferred by the chain conveyors 13 and 14, and also functions to regulate the misalignment of the corrugated cardboard sheet group in the horizontal direction.
Further, as shown in FIG. 2, a guide 29 is vertically provided at the downstream end of the guide bar 28, and the guide 29 guides the corrugated board sheet 12 taken out by the take-out device 15 vertically to the box making device 17. Function to do so.

(Regarding the take-out device of the aligning and feeding device) FIG.
As shown in FIG. 7, a pair of link mechanisms 30 and 31 disposed opposite to each other in the left and right sides in the machine frame on the downstream side in the sheet transport direction, and a plurality of units to which a required operation is given by the link mechanisms 30 and 31 (implementation) A take-out device 15 including two suction cups 32 and 33 is provided. The link mechanism 3
Since the structures of 0 and 31 are bilaterally symmetric, only the structure of the link mechanism 30 (on the left side in FIG. 3) will be described.
Regarding the other link mechanism 31, the same members are designated by the same reference numerals.

A fixed shaft 24 parallel to the upper stay 19 is disposed on the machine frame 11, and the fixed shaft 24 is provided on the downstream side of the movable frames 20, 20.
It also has the function of supporting 2. That is, the sprocket 22 is rotatably and axially movably arranged on the fixed shaft 24 facing each moving frame 20, and the sprocket 22 moves as the moving frame 20 moves.
Is also configured to follow.

At the end of the fixed shaft 24 facing the inside of the machine frame,
One arm portion 34a of the L-shaped lever 34 is rotatably supported, and the other arm portion 34b of the lever 34 is pivotally supported on one end of the swing plate 35 in the longitudinal direction. Fixed shaft 2
4, a projecting shaft 36 is projectingly provided on the inner surface of the machine frame, and one end of a connecting rod 37 is pivotally supported by the projecting shaft 36.
The other end of 7 is pivotally supported on the other end of the swing plate 35 in the longitudinal direction. Then, the swing plates 35, 35 of the link mechanisms 30, 31
A connecting bar 38 is installed between them, and at the tip of the arm portion 34b of the lever 34 of the left side link mechanism 30, the machine frame 1 is attached.
1, a piston rod 39a of an air cylinder 39 arranged upright is connected. That is, by urging the air cylinder 39 forward and backward, the lever 34 is moved to the fixed shaft 2.
4 as a fulcrum, and a pair of rocking plates 3
The connecting bar 38 installed between 5 and 35 is moved back and forth in the sheet transfer direction.

On the connecting bar 38, the cardboard sheet 1
Suction cups 32 and 3 symmetrically to the left and right with the transfer center of 2
3, the suction cups 32 and 33 are directed toward the corrugated cardboard sheet group transferred by the chain conveyors 13 and 14. The suction cups 32 and 33 are urged by the air cylinder 39 in the forward and reverse directions to cause the cardboard sheet 1 to move.
It is set so as to be positioned at the take-out position (FIG. 6 (a)) and the discharge position (FIG. 6 (b)). The suction cups 32,3
3 is arranged so as to be movable and adjustable in the longitudinal direction of the connecting bar 38, so that it can cope with the size change of the corrugated board sheet 12. Further, since the discharge position is set to a level lower than the take-out position, when the suction cups 32, 33 move from the take-out position to the discharge position, they are sucked and held by the suction cups 32, 33 as described later. The upper end of the corrugated board sheet 12 can be detached from the regulation bar 44 (described later).

(Vacuum Switch) The suction cup 3
As shown in FIG. 3, 2, 33 are connected to a vacuum suction source (not shown) via hoses 40, 40, and each suction cup 32, 33 is controlled by ON-OFF control of the suction source at an appropriate timing. The corrugated cardboard sheet 12 is set to be held by suction and released. Also hose 4
Vacuum switches 41, 42 are arranged correspondingly in the paths 0, 40, and the negative pressures generated in the suction cups 32, 33 when the cardboard sheet 12 is taken out are preset in the switches 41, 42. It is set so that it will be turned on when it reaches the specified value. Therefore, by setting the value of the negative pressure generated when the cardboard sheet 12 comes into close contact with the suction cups 32 and 33 facing the sheet take-out position to the set value, the corrugated cardboard is turned on by the vacuum switches 41 and 42 being turned on. The suction holding of the sheet 12 can be confirmed (determined).

When removing the corrugated board sheet 12,
When the vacuum switches 41 and 42 do not operate ON,
It is determined that the suction cups 32 and 33 and the corrugated cardboard sheet 12 are not in close contact with each other, and the chain conveyors 13 and 14 are
Transfer of the cardboard sheet 12 by the vacuum switch 4
It is set to continue until 1, 42 is turned on. As a result, the corrugated cardboard sheet 12 can be securely sucked and held by the suction cups 32 and 33.

The suction cup 32 and the vacuum switch 41 arranged on the left side of the corrugated cardboard sheet 12 at the center of transfer control the drive of the left chain conveyor 13 and the suction cup arranged on the right side. 33 and the vacuum switch 42 allow the right chain conveyor 14
The drive control of is controlled individually. That is, for example, when the vacuum switches 41 and 42 corresponding to the suction cups 32 and 33 on both the left and right sides are not turned ON, the chain conveyors 13 and 14 are driven to extract the corrugated cardboard sheet group from the sheet take-out position (suction cup 32 , 33)
Transfer to. Further, for example, when only the vacuum switch 41 of the left suction cup 32 does not turn on, only the left chain conveyor 13 is driven and the left end of the corrugated cardboard sheet 12 placed on the conveyor 13 is moved to the suction cup 32. It is designed to be transferred (see Fig. 7).

(Regulation Bar) As shown in FIG. 1, extending portions 43, 43 extending upward are formed opposite to each other on both left and right sides of a portion of the machine frame 11 where the take-out device 15 is arranged. The guide groove 43 is inclined so as to be separated from the chain conveyors 13 and 14 toward the extending portion 43 upward.
a is formed. Then, between the two extension parts 43, 43,
A regulation bar 44 is installed along the guide grooves 43a, 43a so as to be vertically adjustable. The regulation bar 44 regulates the movement of the upper end of the corrugated cardboard sheet 12 sucked and held by the suction cups 32 and 33 when the suction cups 32 and 33 of the pickup device 15 are moved from the sheet pickup position to the discharge position. This ensures that the lower end of the corrugated cardboard sheet 12 is separated from the corrugated cardboard sheet group. Further, by bringing the corrugated cardboard sheets 12 located on the front end side of the corrugated board sheet group accumulated on the chain conveyors 13 and 14 into contact with the regulation bar 44, the chain conveyors 13 and 14 are moved so that the upper end of the corrugated board sheet group is in the transfer direction. It is configured so that it can be placed in a state of being tilted forward (see FIG. 6).

(Regarding Box Making Device) Below the take-out device 15, as shown in FIG. 1, the folded corrugated cardboard sheet 12 dropped and fed through the take-out device 15 is opened and the bottom flap is opened. A box making device 17 that is folded and assembled into a box shape is provided. In the box making device 17, the bottom flap is folded while the box opened in a box shape is transferred in a predetermined direction. In this case, the box transfer direction is the chain conveyor 13, It is set so as to be opposite to the direction in which the corrugated board sheet 12 is transported by 14.

(Regarding the Corrugated Cardboard Sheet Opening Mechanism) Support frames 45, 45 are arranged in parallel on the left and right sides of the machine frame 11 facing below the take-out device 15, and a sprocket chain is attached to each support frame 45. And a transfer mechanism 46 composed of Both transfer mechanisms 46, 46 are
A movable table 47, which is set to run parallel to the running direction of the chain conveyors 13 and 14 and is movably installed between the support frames 45, 45, is configured to move back and forth between a standby position and a delivery position. I am doing it. As shown in FIG. 2, an air cylinder 48 is horizontally disposed at a position close to one of the support frames 45 of the moving table 47, and a plurality of pistons (communication connected to a vacuum suction source not shown) are connected to the tip of the piston rod of the air cylinder 48. Then two suction cups 49 are brackets 50
It is arranged through. The suction cup 49 is directed to the front side in the moving direction of the moving table 47, and in the state where the moving table 47 faces the standby position, the suction cup 49 is behind the discharging position of the cardboard sheet 12 by the take-out device 15 (moving on the moving table 47). It is positioned so that it is located on the rear side).

On the machine frame 11 facing below the movable table 47,
As shown in FIG. 1, support bars 51, 51 are horizontally arranged at a predetermined distance in the lateral direction of the machine frame 11, and the support bars 51, 51 extend forward of a movable table 47 facing a standby position. I have put it out. The support bars 51, 51 are dropped and supplied through the take-out device 15 to the corrugated board sheet 1.
It supports the lower end of 2 and functions so that the corrugated cardboard sheet 12 faces the front surface of the suction cups 49, 49 in an upright state. The support bars 51, 51 are configured to be adjustable up and down with respect to the machine frame 11, and by adjusting the height of the support bars 51, 51 according to the height dimension of the corrugated board sheet 12, the suction cups 49, 51 can be adjusted. The suction position of the cardboard sheet 12 by 49 can be adjusted.

The support frame 45 and the air cylinder 48
As shown in FIG. 8, a rotary actuator 52 is disposed on a moving table 47 facing between the holding body 53 and the rotary actuator 52.
In addition, a pair of turning bars 54, 54, which are always positioned so as to be orthogonal to the moving base 47 (a state shown by a chain double-dashed line in FIG. 8A), are arranged in parallel. This turning bar 5
Movable bodies 55 are slidably arranged on the reference numerals 4, 54, and the movable bodies 55 are compressed springs 56, 5 wound around the swivel bars 54, 54.
6 always biases the actuator 52 away from the actuator 52. Further, a suction cup 57, which is connected to a vacuum suction source (not shown) and is connected to the movable body 55, is disposed so as to be capable of turning toward the inside of the machine frame 11.

That is, when the corrugated cardboard sheet 12 is supplied to the front side surface of the air cylinder 48 via the take-out device 15, the rotary actuator 52 is urged to rotate the turning bars 54, 54 in the forward direction. Due to
The suction cup 57 of the movable body 55 can be brought into contact with the front side of the cardboard sheet 12 (the front side in the moving direction of the moving table 47). The rotary actuator 52 is reversely biased with the suction cup 49 provided on the air cylinder 48 and the suction cup 57 provided on the movable body 55 sucking the front and rear surfaces of the corrugated cardboard sheet 12, so that the swivel bar is rotated. The corrugated cardboard sheet 12 is opened in a box shape as 54, 54 rotate in the reverse direction (see FIG. 8B).

(Regarding Folding Member of Bottom Flap) As shown in FIG. 2, a rear folding member 58 which is rotated in a required range in the moving direction of the moving base 47 by an appropriate driving means is provided on the bottom surface of the moving base 47. The rear folding member 58 is provided.
Is set so as to always face rearward from the front end faces of the suction cups 49, 49. Then, it is configured to be operated when the corrugated cardboard sheet 12 is opened by the reciprocating revolving of the revolving bar 54, and to fold inward the flap that hangs down at the rear part of the packaging box. Further, a front folding member 59 is disposed and fixed to the machine frame 11 facing forward of the moving table 47 in the moving direction, and the front folding member 59 hangs down to the front part of the packaging box transferred by the moving table 47. It functions to fold the flap inward.

On the machine frame 11 in which the front folding member 59 is arranged, a pair of side folding members 60, 60 facing both sides sandwiching the folding member 59 are rotatably supported (FIG. 4).
reference). The side folding members 60, 60 are driven by the driving means 61.
It is set so that the open ends thereof can be moved toward and away from each other by being rotationally driven in the forward and reverse directions. Then, when the both side folding members 60, 60 are moved close to each other, the flaps hanging on both sides of the packaging box are folded inward. That is, the opened packaging box is moved by the moving table 47.
The four flaps that hang down from the bottom are folded while the is moved from the standby position to the delivery position. In addition,
The packaging box with the bottom flap folded is the suction cup 4 described above.
It is supplied to the transfer conveyor 18 by urging 9,49 air cylinders 48 in the extending direction of the piston rod.

(Regarding Transfer Conveyor) Box Making Device 17
As shown in FIG. 1, a pair of belt conveyors 62, 62, which are set so that their conveying surfaces are vertical, are disposed in front of each other in the moving direction of the moving table 47 so as to be spaced apart from each other by a predetermined distance. Then, the packaging box supplied from the box making device 17 is transferred while being sandwiched between the two belt conveyors 62, 62. The belt conveyor 62,62
Are configured so that they can be moved close to and away from each other by appropriate means, and the distance can be adjusted according to the outer dimensions of the packaging box.

Between the belt conveyors 62, 62,
A guide member 63 for preventing the folded bottom flap of the packaging box transferred by both conveyors 62, 62 from expanding.
Is provided. Further, as shown in FIG. 2, the tape 6 drawn from the supply source 64 is provided between the belt conveyors 62, 62.
5 is attached to the bottom flap, and a box-sealing device 66 for fixing the flap to the packaging box body is provided.

[0032]

Operation of the Embodiment Next, the operation of the box-making machine according to the embodiment thus constructed will be described.

In the stand-by state of the box making machine 10, the take-out device 15 in the aligning and supplying device 16 has its suction cup 3
2, 33 face the take-out position of the cardboard sheet 12. Further, in the box making device 17, the movable table 47 is positioned at the standby position, and the swivel bars 54, 54 stand by in a state orthogonal to the movable table 47. Then, the plurality of corrugated cardboard sheets 12 folded in a plane are placed in a state of being orthogonal to the pair of chain conveyors 13 and 14, and the corrugated cardboard sheet 12 at the front end thereof is restricted by the regulation bar 4.
Contact 4 As a result, the chain conveyor 13,1
4, a corrugated cardboard sheet group is placed with its upper end inclined forward in the transport direction.

(Regarding the corrugated cardboard sheet take-out step) When the box making machine 10 is operated in this state, the suction cup 3
The vacuum suction source connected to 2, 33 is turned on, and the suction action is given to the suction cups 32, 33. At this time, since the suction cups 32 and 33 are not in close contact with the corrugated cardboard sheet 12 as shown in FIG. 6A, the negative pressure formed in the suction cups 32 and 33 is set to a preset value ( The value of the negative pressure generated when the suction cups 32 and 33 and the corrugated board sheet 12 are in close contact with each other has not been reached, and the vacuum switches 41 and 42 are both in the OFF state. Further, the chain conveyors 13 and 14 are provided with respective drive motors 25,
The group of corrugated cardboard sheets placed on both conveyors 13 and 14 is driven by 25 to be transported toward the sheet take-out position.

(When the corrugated cardboard sheets are stacked in a proper state) The corrugated cardboard sheet group is being transferred, and as shown in FIG.
As shown in (b), when the corrugated cardboard sheet 12 at the front end abuts on the suction cups 32, 33 facing the sheet take-out position, the negative pressure generated in the suction cups 32, 33 sucks and holds the corrugated cardboard sheet 12. Then, when the negative pressure reaches the set value, the vacuum switches 41 and 42 are turned on, thereby urging the air cylinder 39,
As shown in (c), the suction cups 32, 33 are retracted to the discharge position while the cardboard sheet 12 is suction-held by the operation of the pair of link mechanisms 30, 31. At this time, since the movement of the corrugated cardboard sheet 12 near the upper end is regulated by the regulation bar 44, the portion of the corrugated cardboard sheet 12 sucked by the suction cups 32 and 33 is reliably separated from the succeeding corrugated cardboard sheet group. To be done. Further, since the discharge position is set so as to be at a level lower than the take-out position, the upper end of the separated corrugated cardboard sheet 12 is separated from the regulation bar 44. The vacuum switches 41, 42
Is turned on, the chain conveyors 13 and 14 are turned on.
Is stopped, and the transportation of the corrugated cardboard sheet group is stopped.

When the appropriate detection means detects that the suction cups 32, 33 have reached the discharge position, the vacuum suction source is turned off, and the suction of the corrugated cardboard sheet 12 by the suction cups 32, 33 is released. As a result, the corrugated cardboard sheet 12 is vertically dropped and supplied by its own weight to the front side of the movable table 47 in the standby state.

(When Cardboard Sheets are Accumulated in an Improper State) When the cardboard sheets 12 are accumulated in the chain conveyors 13 and 14 in an appropriate state, both vacuum switches 41 and 42 are set as described above. The corrugated cardboard sheets 1 by the suction cups 32 and 33 are turned on substantially at the same time.
2 is taken out. Corrugated cardboard sheet 1
2 is in an inappropriate state, for example, as shown in FIG. 7 (a), the left side (lower side in the drawing) end portion of the corrugated cardboard sheet 12 is positioned rearward in the transfer direction with respect to the right side (upper side in the drawing) end portion. When placed on the chain conveyors 13 and 14 in a tilted state, the cardboard sheet 12 is taken out by an operation different from the above-mentioned operation.

That is, when the corrugated cardboard sheet group is advanced and the corrugated cardboard sheet 12 at the front end thereof approaches the suction cups 32 and 33 facing the sheet taking-out position, the corrugated cardboard sheet 12 first comes into contact with only the suction cup 33 on the right side.
As a result, the corresponding vacuum switch 42 connected to the suction cup 33 is turned on, and the right chain conveyor 14
Stop running. However, at this time, since the corrugated cardboard sheet 12 is not yet in contact with the suction cup 32 on the left side, the corresponding vacuum switch 41 connected to the suction cup 32 is not turned on. In this case, only the left chain conveyor 13 is continuously driven and the left end of the corrugated cardboard sheet 12 placed on the conveyor 13 is transferred to the suction cup 32.

When the corrugated cardboard sheet 12 comes into contact with the suction cup 32 on the left side by the traveling of the chain conveyor 13,
As shown in FIG. 7B, the corrugated cardboard sheet 12 is sucked and held by the suction cup 32, and the corresponding vacuum switch 41 is turned on. And both vacuum switches 41,
On condition that all 42 are turned on, the air cylinder 39 of the take-out device 15 is energized to separate the cardboard sheet 12 sucked and held in the suction cups 32 and 33 from the succeeding cardboard sheet group and take it out.

As described above, in any case where the corrugated board sheets 12 are stacked on the chain conveyors 13 and 14 in an appropriate state or an improper state, the corrugated board sheets 1 are
2, the suction cup 32 waiting at the sheet take-out position,
33, the cups 32, 33
Reliable sheet removal by is achieved.

(Regarding the Box Making Process) The corrugated cardboard sheet 12 dropped and supplied by the take-out device 15 is placed on the support bars 51, 51, and in the suction cups 49, 49 arranged on the moving table 47. Facing the front side. When this state is detected by an appropriate detection means, the moving table 47 is started to move forward by the transfer mechanisms 46, 46, and the suction cup 4 is moved.
The vacuum suction source connected to 9, 49 is turned on, and the suction action is given to the suction cups 49, 49.

Further, as shown in FIG. 8 (a), the rotary actuator 52 is biased to rotate the swivel bars 54, 54.
By turning the card toward the corrugated cardboard sheet 12,
The suction cups 57 arranged on the bars 54, 54 come into contact with the front surface of the cardboard sheet 12. At this time, by pressing the corrugated cardboard sheet 12 against the suction cups 49, 49, the suction cups 49, 49 and the suction cup 57 are brought into close contact with the front and rear surfaces of the sheet 12, so that each of the suction cups 49, 49 is subjected to suction action of the vacuum suction source. The cups 49, 49, 57 suction-hold the corresponding surface of the sheet 12. Then, when the suction holding of the cardboard sheet 12 by the suction cup 57 is confirmed, the rotary actuator 52 is reversely biased and the turning bars 54, 54 return to their original positions, so that the cardboard sheet 12 is returned as shown in FIG. 8B. 12 is opened in a box shape.

Next, when it is confirmed that the corrugated board sheet 12 is opened, the rear folding member 58 is actuated, the rear flap of the packaging box is folded inside, and the forward movement of the moving table 47 causes the front flap to move. The flap is folded by coming into contact with the front folding member 59 arranged on the machine frame 11. Then, after confirming that the rear folding member 58 has returned to the standby position, the side folding member 6
The flaps on both sides of the packaging box are folded by 0,60.

The movable table 47 is further moved, and the movable table 4 is moved.
When an appropriate detection means detects that 7 has reached the delivery position, the suction of the packaging box by the suction cups 49, 49, 57 is released, and the air cylinder 48 is attached in the direction of extending the piston rod. Energized, suction cup 49,
The packaging box is extruded via 49 towards the transfer conveyor 18. This packaging box is supplied between a pair of belt conveyors 62, 62, and thereafter transported while being sandwiched between the conveyors 62, 62. The belt conveyors 62,62
During the transfer by means of the above, the tape 65 is attached to the bottom surface of the packaging box via the sealing device 66, whereby the bottom flap is fixed.

The moving table 47 that has pushed the packaging box toward the transfer conveyor 18 is returned to the standby position by the reverse drive of the transfer mechanisms 46, 46. Then, the moving table 47
When the return of the device to the standby position is confirmed, the take-out device 15
Then, the next corrugated board sheet 12 is taken out.

[0046]

As described above, according to the apparatus for aligning and feeding corrugated cardboard sheets for box making according to the present invention, the corrugated cardboard sheets are transferred by a pair of transfer means individually driven and controlled by independent drive means. Therefore, even when the corrugated cardboard sheet is placed on both transfer means in an improper state, the sheet can be surely sucked and held by the plurality of suction means facing the take-out position. Therefore, it is possible to reliably take out the sheets one by one from the corrugated cardboard sheet group, and it is possible to improve the operation efficiency without causing the sheet supply failure. Further, since the corrugated cardboard sheet is pressed against the suction means by the transfer force of the transfer means, it is possible to stably take out the sheet at the sheet take-out position without providing a weight as in the conventional case. Further, when replenishing a new corrugated cardboard sheet according to the consumption of the corrugated cardboard sheet, it is possible to save the labor of retracting the weight and checking the alignment state of the corrugated cardboard sheet, which is an advantage that workability is significantly improved. .

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a box making machine that employs an alignment supply device according to an embodiment.

FIG. 2 is a vertical side view of the box making machine.

FIG. 3 is a schematic perspective view of an essential part showing a take-out device of the alignment supply device.

FIG. 4 is a side view showing the box making machine partially broken away.

FIG. 5 is a plan view of the box making machine.

FIG. 6 is an explanatory diagram showing a corrugated board sheet taking-out step by the aligning and feeding device.

FIG. 7 is an explanatory view showing a process of taking out a corrugated cardboard sheet placed in an improper state on the chain conveyor.

FIG. 8 is an explanatory view showing a box opening process of the corrugated board sheet by the box manufacturing apparatus.

[Explanation of symbols]

 12 Corrugated Cardboard Sheets 13,14 Chain Conveyor 15 Take-out Device 16 Alignment Supply Device 17 Box Making Device 25 Drive Motor 32,33 Suction Cup 41,42 Vacuum Switch

Claims (1)

[Claims] 1. A supply device for picking up and feeding one by one a corrugated board sheet group from a group of corrugated board sheets to a box making apparatus for assembling corrugated board sheets in a box shape, and arranged in parallel at a predetermined interval. And a pair of left and right transfer means which are individually driven and driven by independent drive means, and a plurality of suction means which are located on the downstream side in the traveling direction of the transfer means and are symmetrically arranged on the left and right sides sandwiching the transfer center of the corrugated cardboard sheet. And a take-out device capable of moving the suction means to a take-out position and a discharge position of the corrugated board sheet, and it is determined whether or not the corrugated board sheet is sucked and held by each of the left and right suction means, and based on the determination result. The corrugated cardboard sheet is placed on the pair of transfer means in a forward leaning posture so as to intersect with the traveling direction on the pair of transfer means. It is configured to continue the transfer of the corrugated board sheet by each corresponding transfer means until the determination means confirms the suction of the corrugated board sheet by the suction means when the transfer is performed toward the suction means facing the recording position. An apparatus for aligning and feeding cardboard sheets for box making, which is characterized in that