JP2775139B2 - Opening device for folding case in case stuffing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for opening a folding case in a case stuffing machine, and more particularly, to a case (hereinafter also referred to as a folding case) which is folded in a sheet shape by suction-holding both opposing surfaces. And an opening device for opening the case.

[0002]

2. Description of the Related Art A case packing machine for opening a corrugated cardboard case folded in a sheet shape and supplying articles to be packaged into the opened corrugated cardboard case is disclosed, for example, in Japanese Patent Application Laid-Open No. 61-69441. As disclosed in Japanese Unexamined Patent Publication No. Hei 5-112329, a device is employed in which a folding case is opened by sucking and holding both opposing surfaces of a folding case.

[0003]

SUMMARY OF THE INVENTION The above-mentioned JP-A-61-69 is disclosed.
In the opening device disclosed in Japanese Patent No. 441, a take-out suction arm for taking out the folding cases that are accumulated in a magazine one by one, and an opening suction arm that cooperates with the suction arm to open the case are provided. They are arranged individually. Then, after the take-out suction arm sucks and holds one side of the folding case to take out the case from the magazine, the opening suction arm is turned around a vertical axis, so that the take-out suction arm in the folding case is used. It is made to face the other side opposite to the side that is being sucked and held. Next, the suction arm for taking out is brought close to the suction arm for opening, so that the other side surface of the case is sucked and held by the suction arm for opening, and then the suction arm for taking out is lowered so as to be separated from the suction arm for opening. The case is configured to be opened by swinging.

However, in this method, in the step of opening the folding case, it is necessary to move the suction arm for taking out close to the suction arm for opening, which takes a long time for the opening step and hinders speeding up of the machine. Cause. In addition, the packaged object is supplied to the opened cardboard case on the swing locus of the take-out suction arm,
While the case moves forward to the next station, it is impossible to swing the take-out suction arm upward, and there has been a problem that the cycle time of the machine becomes long.

In the opening device disclosed in Japanese Patent Laid-Open No. 5-112329, a take-out suction arm and a take-out suction arm are separately provided, and a folding case is taken out of a magazine. In a state where the suction arm is temporarily stopped at the position where the suction arm for opening is disposed, the suction arm for opening is operated to perform opening. Then, the take-out suction arm is swung further downward, and the opened cardboard case is guided by the forming guide means, so that the case is completely opened.

However, even in this method, there is a problem that a time for temporarily stopping the take-out suction arm in the case opening step is required, and it is not possible to cope with a high-speed machine. In addition, since the opening suction arm is fixedly disposed in the middle of the swing of the take-out suction arm, a drawback such as the necessity of separately providing a forming guide for completely opening the cardboard case is pointed out. .

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention has been proposed in order to solve the problem suitably, and it is an object of the present invention to provide a folding case in which the speed of the machine can be increased and the case can be reliably opened. It is an object to provide an opening device.

[0008]

SUMMARY OF THE INVENTION In order to solve the above problems and achieve the intended object, the present invention relates to a case packing machine having an opening device for opening a folded case. A storage portion for storing the case in a forward-tilted posture in which the upper end thereof is tilted forward, and a case extraction position which is disposed swingably below the storage portion and takes out a front case side folding case in the storage portion. , an arm which is swung between a retracted position and withdrawal after Ri by case opening position and opening position below the reservoir, the said arm, the when the arm took faces the case take-out position to face the front side of the folding case in the reservoir while sucking and holding the one side of that, the arm is the folding case spaced apart from the reservoir by swinging toward the case opening position savings <br / > take-out from the distillation unit Te, cases when moved to the case opening position
A first suction means which is positioned and set to hold the opening , and which moves relatively close to and away from the first suction means while the arm swings from the case take-out position to the case opening position; Sometimes the first suction means of the folding case
The surface facing the suction surface taken out of the storage section is suction-held and held, and when the space is separated, the folding case is opened and the arm is opened .
When the system moves to the case opening position,
Ri each are of arrangement of the second adsorption means for opening the case holding
When the case opened by the first suction means and the second suction means is held at the case opening position,
When the arm swings from the case opening position to the retracted position, the first suction means and the second suction means are separated from the case.
The first suction means is configured to be moved to a position where it does not interfere with the case at the opening position.

According to another aspect of the present invention, there is provided a case packing machine provided with an opening device for opening a folded case, wherein the plurality of folding cases are arranged such that upper ends thereof are forward. A storage section for storing in a tilted forward tilting posture, and a folding case disposed on the lower side of the storage section so as to be swingable and connected to a first cam rotated by a driving means, and a front end side of the storage section. A main arm that swings between a case take-out position for taking out the case, a case opening position below the storage portion, and a retreat position retracted from the opening position toward the storage portion, and is swingably disposed on the main arm. , is cooperative with the second cam which is rotated by the drive means, and the secondary arm is swung back and forth swinging direction of the arm relative to the main arm, it is respectively swingably disposed in the sub-arm, drive Means rotated by means It is cooperative with the cam, the first opening earth to be swung back and forth swinging direction of the arm on the secondary arm
And the second opening arm, and the first opening arm, and the main arm is moved to the case removal position when the main arm is moved to the case removal position.
One part facing the folding case on the front side in the storage
Side holding suction, when the main arm is swung toward the <br/> case opening position from the case take-out position, the main arm, Fukua
A first suction means for removing the folding case from the storage portion for swinging the arm and the first opening arm; and a main arm disposed at the second opening arm and at the case removal position.
When the sub-arm swings toward the case opening position,
And the folding case which is moved relatively close to and away from the first suction means under the swinging motion of the second opening arm, and is taken out of the storage part by the first suction means when approaching the first suction means . It becomes a suction surface which faces by said first suction means and a second suction means capable suction holding, in the course of the main arm is swung from the case take-out position in case the opening position, the said first suction means When the two suction means move relatively close to and away from each other, the folding case is opened, and the main arm swings from the case opening position to the retracted position, so that the first suction means is moved to the case at the opening position. It is configured to be moved to a position where no interference occurs.

[0010]

The folded case on the front end side of the storage section is sucked and held by the first suction means disposed on the arm facing the case take-out position, and the arm swings toward the case opening position. Then, one folding case is taken out from the storage unit. While the arm swings from the case take-out position to the case opening position, the second suction means disposed on the arm and the first suction means relatively move close to each other, so that the second suction means is folded. The folding case is opened by holding the surface of the case opposite to the surface held and held by the first suction means and then moving the both suction means relatively away from each other. When the folding case is opened by the first suction means and the second suction means and the case is held at the open position, the arm swings to the retracted position, and the first suction means interferes with the case at the open position. Move to a position that does not. Thus, the arm can be swung to the case take-out position while the case is held at the opening position. In addition, at the case opening position, the first
The open state of the case is maintained by the guide bed for supplying the articles to be packed entering into the opened case which is held by suction by the suction means and the second suction means.

[0011]

Next, a preferred embodiment of a folding case opening device in a case filling machine according to the present invention will be described.
This will be described below with reference to the accompanying drawings. For convenience of description, “upstream” and “downstream” refer to the direction of transfer of the cardboard case, and “left and right” refer to the direction intersecting the transfer direction of the cardboard case.

(Overall Structure of Case Packing Machine) FIG. 1 is a side view showing a schematic configuration of a case packing machine employing an opening device according to an embodiment.
Is a flat cardboard case (folding)
A case) a storage and transfer device 12 as a storage portion of 11 and an opening device 13 for taking out the cases 11 one by one from the front end side (downstream in the transfer direction) of the group of cardboard cases and opening the case 11;
It is basically composed of a supply device 15 for supplying a packaged object 14 to the cardboard case 11 opened by the opening device 13.

(Regarding the storage and transfer device) As shown in FIGS. 2 and 3, a pair of conveyor frames 16, 16 extending along the transfer direction of the corrugated cardboard case 11 are arranged in parallel in the left and right direction. And each conveyor frame 16
A chain conveyor 17 is provided so as to be able to run freely. A plurality of cardboard cases 11 folded flatly are placed and stored on both conveyors 17, 17 in a posture intersecting the traveling direction of the conveyor and tilting forward.
The corrugated cardboard case group is transferred by driving the units 7 and 17, and the corrugated cardboard case 11 on the front end side is supplied to a case removal position by the opening device 13. A guide bar 18 extending in parallel with each of the conveyor frames 16 is provided above each of the conveyor frames 16, and the guide bar 18 is provided at the left and right ends of the corrugated cardboard case group transferred by the chain conveyors 17, 17. It functions to guide and restrict misalignment of the cardboard case group in the left-right direction.

Downstream of the conveyor frames 16, 16, as shown in FIG. 1, the device frames 19, 19 located on both left and right sides of the both frames 16, 16 are separated from the storage and transfer device 12 upward. Elongated holders 20, 20 extending in an inclined manner are provided to face each other. A restricting bar 21 is installed between the holders 20 so as to be vertically movable. Conveyor frame 1
Support claws 22 are rotatably pivotally supported on opposing surfaces on the downstream side of 6, 16 respectively. As shown in FIG. 3, the support claws 22 are always raised above the conveying surface of the chain conveyor 17 by a tension spring 23. It is urged to extend. The lower end of the corrugated cardboard case 11 on the front end side of the corrugated cardboard case group placed and stored between the chain conveyors 17, 17 is supported by the left and right support claws 22, 22, and the upper end abuts on the regulating bar 21. Thus, the case 11 is supported with the upper end inclined forward in the transfer direction.

(Regarding the opening device) As shown in FIG. 2, a stay 24 is disposed below the storage and transfer device 12 by a required height between the device frames 19, 19, and the chain in the stay 24 is provided. A pair of brackets 25, 25 are provided upright at a position facing the space between the conveyors 17, 17 at predetermined intervals in the left-right direction. As shown in FIGS. 4 and 5, the lower ends of the main arms 26 are pivotally supported by the respective brackets 25 so as to be swingable, and the two main arms 26, 26 are connected by a connector 27 so as to swing integrally. Is done. A drive mechanism is provided between the device frames 19, 19 facing upstream from the arrangement positions of the main arms 26, 26.
Drive shaft 28 driven to rotate by motor 68 as a step
Are rotatably arranged, and three disk-shaped groove cams 29, 30, 31 are arranged on the drive shaft 28 so as to rotate integrally with each other while being spaced apart in the axial direction. In FIG. 5, the main arm 2
A cam follower 32 rotatably supported by the opposing left main arm 26 is slidably fitted into a cam groove formed in a first groove cam (first cam) 29 located on the left side of the first and second cams 26 and 26. (See FIG. 6). The first groove cam 29 is connected to the drive shaft 28.
The main arms 26, 26 via the cam followers 32 that slide along the cam grooves when rotated in the required direction by
As shown in FIGS. 9 to 14, a first suction cup 3 described later
A case removal position where the front and rear storage tanks 8 and 38 face the cardboard case 11 on the front end side, a case opening position provided below the storage and transfer unit 12 on the downstream side, and retreated to an upstream side from the opening position. It functions to swing back and forth between the retracted position.

A pair of sub-arms 34, 34 spaced apart in the axial direction is provided on a first shaft 33 rotatably disposed between the upper ends of the main arms 26, 26 via one end of the main arm 26.
It is pivotally supported in the swinging direction . A second shaft 35 is rotatably disposed between the open ends of the sub arms 34, 34, and a first open arm 36 is attached to the second shaft 35 by the sub arm 3.
4 is pivotably supported in the swinging direction . As shown in FIG. 6, the first opening arm 36 is provided with a holding member 37 extending upward at a required length.
In addition, a plurality of (two in this embodiment) first suction hands pointing toward the corrugated cardboard case 11 on the front end side of the storage and transfer device 12 are used.
The first suction cups 38, 38 as steps are held by the holding members 3.
7 are spaced apart in the longitudinal direction. The first suction cups 38, 38 are connected to a vacuum suction source (not shown) via a hose 39, and the suction source is turned on at an appropriate timing.
By performing N-OFF control, each suction cup 38, 3
The suction holding and the suction release of the corrugated cardboard case 11 by the setting 8 are performed.

At an intermediate position in the longitudinal direction of the right sub arm 34 shown in FIG.
A first rod 4 whose upper end is pivotally supported on this pin 40
The lower end of 1 is rotatably supported by the open end of a first lever 43 rotatably disposed on the operating shaft 42. That is, as shown in FIG. 4, brackets 44, 44 are erected on the stay 24 facing the further upstream side from the disposition position of the drive shaft 28, with a predetermined interval between them on the left and right. Both brackets 4
An operating shaft 42 is rotatably supported between 4, 44.
One end of the first lever 43 is disposed rotatably with respect to the operation shaft 42 at a substantially intermediate position in the axial direction of the operation shaft 42. A cam follower 45 is rotatably supported at an intermediate position in the longitudinal direction of the first lever 43.
Is slidably fitted in a cam groove formed in a second groove cam (second cam) 30 located on the inner right side of the main arms 26, 26 of the drive shaft 28. And the second groove cam 30
The sub-arms 34, 34 are rotated by a drive shaft 28 in a required direction via a cam follower 45 that slides along a cam groove, and the first arm 33 is supported by a first shaft 33 as shown in FIGS. It functions to swing back and forth in the required range.

The sub-arms 34, 3 of the first shaft 33
As shown in FIG. 6, a substantially central portion of an operating lever 46 formed in a V shape is rotatably supported at a position facing between the four positions, and one end of the lever 46 pointing in the direction of the second shaft 35. Part 2
The upper end of the rod 47 is pivotally supported pivotally. The lower end of the second rod 47 is rotatably supported by an open end of a second lever 48 having one end fixed to the operating shaft 42.
Further, one end of a third lever 49 is fixed to the operating shaft 42,
A cam follower 50 pivotally supported by the open end of the third lever 49 is rotatably supported by a third grooved cam (third cam) 31 on the right outside (in FIG. 5) disposed on the drive shaft 28. Are slidably fitted in the cam grooves. That is, when the third groove cam 31 rotates and the cam follower 50 slides along the cam groove, and the third lever 49 swings, the operating shaft 42 rotates integrally therewith and the second lever 49 rotates. 48 is similarly swung. And by the swing of the second lever 48,
It is configured to impart a required swinging motion to the operation lever 46 via the second rod 47. Since the first lever 43 is rotatable with respect to the operating shaft 42, the first lever 43 can swing independently of the second lever 48 and the third lever 49.

The second rod 4 of the operating lever 46
The other end of the first opening arm 36 opposite to the end on which the pivot 7 is pivotally supported and the lower end of the first opening arm 36 are swingably connected to each other by a long connecting rod 51. Accordingly, the first opening arm 36 is also swung about the second shaft 35 as a fulcrum (see FIGS. 11 to 13).

As shown in FIG. 6, the operating lever 46 has a short portion 52a of a second opening arm 52 formed in a substantially L-shape.
Are pivotally supported. The second opening arm 52
Is a short connecting rod 5 having one end pivotally supported by a fulcrum pin 53 connecting the sub-arms 34, 34.
4 is rotatably supported by the other end of the second opening arm.
52 is a secondary arm, as shown in FIGS.
Can swing back and forth in the swing direction of the arms 34 and 34
Is configured. Then, the second opening arm 52
The main arm 26 is moved to the case removal position (storage and transfer device 1).
(Position to take out the cardboard case 11 on the front end side in 2)
As a second suction means pointing upwards in a state facing
A suction cup 55 is provided. This second suction cup 55
As shown in FIG. 10 and FIG. 11, the secondary arms 34, 34 swing about the first shaft 33 from the standby position separated from the first suction cups 38, 38, thereby forming the second opening arm. The first suction cups 38, 3 of the cardboard case 11 taken out by the cups 38, 38 approaching the first suction cups 38, 38 with the swing of 52.
8 is set so as to be moved to an operating position in contact with a surface opposite to the suction surface. The second suction cup 55 is connected to a vacuum suction source (not shown), and is set so as to perform suction holding and release of the cardboard case 11 by controlling ON / OFF of the suction source at an appropriate timing. . The cardboard case 11 sucked and held by the suction cups 38 and 55 is, as shown in FIG.
The swing of the operating lever 46 causes the first suction cup 38,
38 is opened by moving so as to be separated from the first suction cup 55.

(About the support bar) The storage and transfer device 12
As shown in FIG. 7, a pair of support bars 56, 56 are horizontally disposed at a predetermined distance in the left-right direction at a position (case opening position) facing a required height below the arrangement level of The first suction cups 38 of the opening device 13 pass between the bars 56. Then, the cardboard case 11 opened by the opening device 13
Are mounted on both support bars 56, 56, so that the supply device 15 supplies the packaged object 14. Note that the corrugated cardboard case 11 to which the article to be packaged 14 has been supplied is pushed toward the downstream side on the support bars 56 by a not-shown pushing means.

(Regarding the device for supplying the packaged object) A pair of columns 57, 57 are vertically arranged outside the one support bar 56 at a predetermined interval in the transfer direction of the cardboard case 11. It is configured to rotate in the opposite direction. A gate member 58 is disposed and fixed to each of the columns 57, and the gate members 58, 58 are directed to the opposite columns 57, 57, thereby closing between the columns 57, 57 as shown in FIG. ing. Also, by rotating the two support columns 57, 57 in opposite directions to each other and rotating the gate members 58, 58 by 90 degrees toward the cardboard case 11, FIG.
The space between the columns 57 is opened as shown in FIG. At this time, the open ends of the gate members 58, 58 are connected to the front and rear (upstream and downstream) flaps 1 of the cardboard case 11.
1a and 11b are kept open from the inside. The open ends of the gate members 58, 58 are formed in a comb shape that does not interfere with each other.

A guide bed 59 for the article to be packaged 14 is disposed outside the position where the columns 57 and 57 are disposed so as to move up and down along with the cardboard case 11 facing the case opening position. ing. That is, as shown in FIG. 8, the horizontal guide bed 59 is connected to the bracket 61 of the apparatus frame 19 via the parallel link mechanism 60 disposed on the lower surface thereof, and the link mechanism 60 is operated by the cylinder 62. It is configured as follows. Then, at a standby position (position indicated by a two-dot chain line) separated from the cardboard case 11, the guide bed 59, which stands by horizontally at a required height above the lower flap 11d of the case 11, horizontally moves the cylinder 62 to the required position. By urging in the direction, it enters the inside of the open end of the cardboard case 11 and moves in parallel to an operating position (position indicated by a solid line) lowered by a required height. At this time, the front end of the guide bed 59 presses the lower flap 11d of the case 11 from above to maintain the open state of the corrugated cardboard case 11 and to function to reliably supply the articles 14 to be packaged.

On the opposite side of the guide bed 59 from the case opening position, a pusher 63 which can move forward and backward toward the opening position is provided, and the pusher 63 is supplied to a table 64 located on the front side of the pusher 63. It is configured to supply the article to be packaged 14 to the inside of the cardboard case 11. In addition, the upper surface level of the table 64 is set so as to coincide with the upper surface level of the guide bed 59 facing the operation position, so that the supply of the article to be packaged 14 is achieved reliably.

As shown in FIG. 7, the cylinder 65 moves toward and away from the cardboard case 11 at the opening position on the opposite side of the position where the supply device 15 of the packaged object 14 is disposed and the case opening position. A flap holding plate 66 is provided. This flap holding plate 66 has upper and lower ends bent outward, and when the holding plate 66 is brought close to the cardboard case 11, the upper and lower flaps 11c,
11d in the up and down direction, and the front and rear flaps 11
It functions to ensure that the a and 11b are folded. In addition, the flap holding plate 66 is located at the rear
It is positioned at a position that does not hinder the folding of the (upstream) flap 11b. Also, the flap holding plate 66
The pusher 63 also functions as a stopper for the article 14 to be supplied to the cardboard case 11. Furthermore,
Reference numeral 67 denotes a folding means for folding the rear (upstream) flap 11b inward, and operates after the flap holding plate 66 advances to separate the upper and lower flaps 11c and 11d in the vertical direction. 11b is set to be inserted.

[0026]

Next, the operation of the case packing machine according to the embodiment configured as described above will be described. The front corrugated cardboard case 11 in the corrugated cardboard case group stored in the storage and transfer device 12 has a forwardly inclined posture in which the upper end abuts on the regulating bar 21 and the lower end abuts the pair of support claws 22, 22. It has become. As shown in FIG. 9, the first suction cups 38 in the opening device 13 are in parallel contact with the cardboard case 11 on the front end side of the storage and transfer device 12.

When the case packing machine 10 is operated in this state, the vacuum suction source connected to the first suction cups 38, 38 is turned on, and suction is applied to the suction cups 38, 38 to provide a corrugated cardboard case. 11 is held by suction. Further, the drive shaft 28 is driven to rotate in a required direction, and the main arms 26, 26 swing from the case take-out position toward the case opening position under the engagement between the first grooved cam 29 and the cam follower 32. The cardboard case 11 is separated from the subsequent cardboard case group while rotating the support claws 22, 22 against the elasticity of the tension springs 23, 23.
Only one sheet is taken out (see FIG. 10). When the cardboard case 11 on the front end side is removed, the chain conveyor 1 is removed.
7 and 17 are driven to advance the corrugated cardboard case group so that the next corrugated cardboard case 11 is brought to the case removal position.

The first lever 43 swings under the engagement of the second groove cam 30 and the cam follower 45, which rotate integrally with the first groove cam 29, so that the second groove cam 30 rotates through the first rod 41. The arms 34, 34 swing about the first shaft 33 with respect to the main arms 26, 26. As a result, FIG.
As shown in FIG. 1, the operating lever 46 is relatively rotated with respect to the sub arms 34, 34, and the first opening arm 36 and the second
The opening arm 52 is swung. The second opening arm 52
Of the first suction cups 38, 38 in the cardboard case 11, which is held by suction by the first suction cups 38, 38 provided in the first opening arm 36. It is in contact with the surface facing the surface. At this time, since the second suction cup 55 is given a suction action by the vacuum suction source, the cardboard case 11 is suction-held by the cup 55.

Next, the third lever 49 and the second lever 48 swing under the engagement between the third groove cam 31 rotating integrally with the first groove cam 29 and the cam follower 50, whereby Actuating lever 4 via second rod 47
6 swings around the first shaft 33 as a fulcrum. Thereby, the first opening arm 36 swings about the second shaft 35 as a fulcrum, and the first suction cups 38, 38 move away from the second suction cup 55 as shown in FIG. The folded cardboard case 11 held by suction by the cups 38 and 55 is opened. That is,
In the opening device 13 according to the embodiment, while the main arm 26 swings from the case removal position to the case opening position,
Since the corrugated cardboard case 11 is opened without stopping the swing of the arm 26, the time required for the opening step can be reduced.

The opened cardboard case 11 is placed on the support bars 56, 56 while being held by the suction cups 38, 55. Next, by opening the gate members 58, 58 of the supply device 15, the front and rear flaps 11a, 11b are held open from the inside as shown in FIG. The urging force causes the parallel movement from the standby position to the operating position. As a result, the lower flap 11d of the cardboard case 11 at the case opening position is pressed by the guide bed 59 (see FIG. 8), and the open state of the cardboard case 11 is securely held. Further, as the flap holding plate 66 advances toward the cardboard case 11, the upper and lower flaps 11c and 11d are vertically separated from each other, and the rear flap 11b is folded by the folding means 67. Then, when the pusher 63 of the supply device 15 advances toward the cardboard case 11, the packaged object 14 supplied to the table 64 is supplied.
Moves on the guide bed 59 and is supplied into the cardboard case 11. When the packaged object 14 is supplied by the pusher 63, the flap holding plate 66 faces the forward position.
It does not protrude from 1.

In the opening device 13, the gate member 5
Cardboard case 1 by 8,58 and guide bed 59
1 is held open, the two suction cups 38,
The vacuum suction source connected to 55 is turned off, and the suction of the case 11 is released. Further, the swing of the first opening arm 36 and the second opening arm 52 accompanying the swing of the operation lever 46 causes the first suction cup 38, as shown in FIG.
38 and the second suction cup 55 are separated from the cardboard case 11. Further, under the action of engagement between the first grooved cam 29 and the cam follower 32, as shown in FIG. 14, the main arms 26, 26 swing counterclockwise to the retracted position where they retract from the case opening position. By doing so, the first suction cup 3
8, 38 are retracted upstream from below the cardboard case 11 at the opening position. Next, the main arms 26, 26 swing toward the case removal position, and the
When the fourth and fourth members 34 swing about the first shaft 33 as a fulcrum, they return to the expected state shown in FIG. 9 and wait for the next cardboard case 11 to be taken out. In other words, the first suction cups 38, 38 can be moved to the upper case take-out position while the article to be packaged 14 is being supplied to the corrugated cardboard case 11 at the opening position, thereby improving work efficiency. It becomes possible.

The first cam, the second cam, and the third cam are:
It is not necessary to use a grooved cam as in the embodiment, and a plate cam, a cylindrical cam, or the like can be appropriately used. Further, each cam may be driven by independent driving means.

[0033]

As described above, according to the opening device of the folding case in the case filling machine according to the present invention, the arm has the first suction means for taking out the case and the second suction means for opening the folding case. The folding case is opened by the respective suction operations during the swinging of the arm, so that the case can be reliably opened and the time required for the opening can be shortened to increase the speed of the machine. Can be achieved. Further, since the arm is swung to the case opening position and then retracted from the opening position, the cycle time until the next case removal can be shortened, and the speed of the machine can be increased. Further, the opened case is kept open by the first suction means and the second suction means, and the guide bed for supplying the packaged goods is made to enter from the case opening end to hold the lower part of the opening end of the case. Since the supply of the packaged object can be performed in the state, it is not necessary to maintain the open state by providing members such as molding guides even when supplying the packaged object, and the supply of the packaged object under the reliable open state is not required. Can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a case filling machine employing an opening device according to an embodiment.

FIG. 2 is a partially cutaway front view of the case filling machine.

FIG. 3 is a side view showing the storage and transfer device in a longitudinal section.

FIG. 4 is a schematic perspective view showing an opening device.

FIG. 5 is a front view showing the opening device.

FIG. 6 is a side view showing a state in which one main arm and one sub arm in the opening device are removed.

FIG. 7 is a plan view showing a device for supplying a packaged object.

FIG. 8 is a rear view showing a guide bed and a gate member.

FIG. 9 is an explanatory view showing a step of opening the cardboard case by the opening device and showing a state in which the cardboard case is sucked and held by the first suction cup.

FIG. 10 is an explanatory view showing a step of opening the cardboard case by the opening device and showing a state in which the cardboard case is taken out from the storage and transfer device.

FIG. 11 is an explanatory view showing a step of opening the cardboard case by the opening device and showing a state where the first suction cup and the second suction cup suck and hold the cardboard case.

FIG. 12 is an explanatory view showing a step of opening the cardboard case by the opening device, and showing a state where the first suction cup and the second suction cup are separated from each other and the cardboard case is opened.

FIG. 13 is an explanatory view showing a step of opening the cardboard case by the opening device and showing a state where the first suction cup and the second suction cup are separated from the opened cardboard case.

FIG. 14 is an explanatory view showing a step of opening the corrugated cardboard case by the opening device, and showing a state in which a main arm is swung to a retracted position.

[Explanation of symbols]

 11 Cardboard case(Folding case) 12 Storage and transfer device(Reservoir) 13 Opening device  26 Main arm 29 1st groove cam(1st cam) 30 Second groove cam(2nd cam) 31 Third groove cam(3rd cam) 34 Secondary arm 36 First opening arm 38 First suction cup(First adsorption means) 52 second opening arm 55 second suction cup(Second adsorption means) 59 Guide bed 68 Motor(Drive means)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65B 43/00-43/62 B31B 1/00-49/04

Claims (3)

(57) [Claims] 1. A folded opening device for opening the case (11) and (13) encasing machine having a front said plurality of folded casing (11), its upper end is inclined to the front inclined reservoir for storing posture (12), the pivotably disposed below the reservoir (12), cable <br/> taking out the front end of the folding case in the reservoir (12) (11) scan removal position and has an arm (26) which is swung between the reservoir (12) from the retreat position regression after Ri by case opening position and opening position of the lower, the the arm (26) , together with the arm (26) cases the reservoir facing it when the take-out position (12) facing the front side of the folding case (11) in attracting and holding the one side of that, a <br/> chromatography (26) swings toward the case opening position.
The reservoir spaced by folding casing (12) (11) and removal from the reservoir (12), Ke when moved to the case opening position
Over scan (11) the first adsorption means is positioned set to open holding (38), the arm (26) said first adsorption means in the course of swinging from the case take-out position to the case opening position (38) relatively close spaced moved relative, Ke folded upon its proximity
Of the base (11) from the storage part (12) by the first adsorption means (38)
The surface facing the suction surface is held by suction, and when separated, the folding case (11) is opened and the arm (26) is opened.
The case is moved by the first suction means (38) when moved to the mouth position.
(11) respectively are of arrangement of the second adsorption means for opening the holding (55)
When the case (11) opened by the first suction means (38) and the second suction means (55) is held at the case opening position, the arm (26) is retracted from the case opening position. The first suction means (38) and the second suction means.
The step (55) is separated from the case (11) to separate the first suction means (38).
The opening device of the folding case in the case stuffing machine, wherein the opening device is moved to a position that does not interfere with the case (11) at the opening position. 2. A folded opening device for opening the case (11) and (13) encasing machine having a front said plurality of folded casing (11), its upper end is inclined to the front inclined A storage unit (12) for storing in a posture, and a driving unit disposed swingably below the storage unit (12) ,
(68) connected to the first cam (29) rotated to take out the folding case (11) on the front end side of the storage section (12) . <br/> Case extraction position, below the storage section (12) the main arm is swung between a case opening position and the retracted position retracted into the storage unit side of the opening position (26), swingably disposed in said main arm (26), drive means ( 68)
Connected to the second cam (30) rotated by the
A secondary arm (34) relative to (26) to be swung back and forth swinging direction of the arm (26), wherein the auxiliary arm (34) is arranged freely each rocking drive means
(68) is cooperative with the third cam is rotated (31), the first opening arm (36) which is swung in the front-rear swinging direction of the arm (34) to the sub-arm (34) and the A two-opening arm (52) , disposed on the first opening arm (36) , and the main arm (26)
When it is in the case removal position,
Adsorb one side of the folding case (11) facing the front side
Holding, when the main arm (26) swings towards the case take-out position in case the opening position, the main arm (26), sub-ah
First suction means for removing the folding case (11) from the storage part (12) under the swinging motion of the arm (34) and the first opening arm (36).
And (38), disposed in said second opening arm (52), said cable
The main arm (26) at the take-out position
When swinging, the auxiliary arm (34) and the second opening arm
(52) moves relatively close to and away from the first suction means (38) under the swinging motion, and when the storage means (12) approaches the first suction means (38) ,
First it from the suction means (38) in the retrieved folding case (11) of the first adsorption unit (38) second adsorption means capable suction holding the suction surface and the surface facing by (55), said main While the arm (26) swings from the case take-out position to the case opening position, the first suction means (38) and the second suction means (55) relatively move close to and away from each other. (11) is opened, the main arm (26) swings from the case opening position to the retracted position, and thereby the first suction means (38) is moved to the case in the opened position.
An opening device for a folding case in a case filling machine, wherein the opening device is configured to be moved to a position that does not interfere with (11) . 3. The case (11) at the case opening position.
A guide bed (59) for supplying articles to be packaged
Is disposed so as to be movable forward and backward toward the case (11), and the first
The guide bed (59) is placed inside the open case (11) held by the suction means (38) and the second suction means (55 ).
3. The opening device for a folding case in a case stuffing machine according to claim 1 or 2, wherein the opening of the folding case is held by holding the lower portion of the case.