JPH08301228A - Automatic unpacking device of setting-up case - Google Patents

Abstract

PURPOSE: To provide a useful automatic unpacking device in which a setting-up case can be taken out from the upper side of a magazine and besides, the whole including the case transfer mechanism can be realized in a simple constitution. CONSTITUTION: The uppermost carton case 10 of a magazine 20 is sucked by a suction lever 30 and erected thereby and a spatula 47 is inserted in the erected carton case 10 and the carton case is transferred to a taking-up position P3 while supporting the end by a supporting member 48 and pressing the end face of carton case onto the arcuate guide face 51 by use of the spatula 47. The bend 1a is slid in accordance with the transfer movement of the transfer part 40 of carton while the bend 1a is pressed on the belt 61 and the carton case 10 is unpacked and the unpacked carton case is sent out from the taking-up position by the beltconveyor 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic box opening device for a setup type case.

[0002]

2. Description of the Related Art A set-up type case has a bottom surface 1, an upper surface 4 and a pair of tab surfaces 2 and 3 like a case 10 shown in FIG. In addition, the case is folded so that the bent portions 1a and 4a are formed between the upper surface 4 and the tab surface 3, and when this is used as a packaging case, it is manually or automatically opened by a box opening device as shown in FIG. The case 10b shown in (c) is opened and used.

In an automatic box opening device for a setup type case, generally, a magazine for storing the setup type cases in a vertically stacked state and a suction pad or the like for adsorbing the setup type cases from the magazine one by one. It is equipped with a mechanism to open the box by pushing the bent part of the set-up type case that has been taken out to the side plate etc. so that the opened case can be sent to the next process by a belt conveyor etc. Has become.

In the automatic box opening device, as a method of opening the box, for example, the set-up case is sucked by a suction pad and is moved back and forth or left and right, and one bent portion is pressed against the side plate. There are known methods such as a method of opening a box, a method of setting a setup type case between a pair of claws provided on a belt conveyor, and sandwiching and pressing both bent portions with the claws to open the box.

A mechanism for taking out the setup type case from the magazine and a mechanism for opening the box are generally arranged at the lower side of the magazine, and the setup type case at the lowermost stage is taken out from an opening opened at the bottom of the magazine. Then, the operation of opening the case and acquiring the opened case can be smoothly performed in a series of flows.

[0006]

However, in such an automatic box opening device which takes out the setup type cases from the lower part of the magazine and opens the boxes, when a large number of setup type cases are stored in the magazine, the stacked cases are There is a problem that the lower setup type case receives pressure due to its own weight and unreasonable force is applied when taking out the lowermost setup type case, the case is deformed or the case is easily dropped from the opening of the magazine. Therefore, the amount of lamination could not be increased so much. Therefore, when a large number of setup type cases are opened, it is necessary to divide the set case into small numbers and set it in the magazine many times, which increases the burden on the operator and takes a lot of time. .

This problem can be solved by adopting a configuration in which the setup type case is taken out from above the magazine. However, after taking out the setup type case, the setup type case is automatically opened and placed on a conveyor or the like. Since it is not possible to directly adopt the configuration of automatically opening the case taken out from the lower part of the magazine, it has not yet been put to practical use.

In particular, in the method of taking out the magazine from above, the case is conveyed in the upward direction at the time of taking out, and the case is placed in the downward direction after the automatic box opening. Considering the necessity, it is expected that the case transport mechanism will be punished, which poses a disadvantage in terms of price. The present invention
In view of the above problems, it is a main object of the present invention to provide a remarkably useful automatic box opening device which can take out a setup type case from above a magazine and can be realized with a simple structure as a whole including a case conveying mechanism.

[0009]

To achieve the above object, the invention according to claim 1 has a bottom surface, an upper surface, and a pair of tab surfaces, and a bent portion between the bottom surface and the tab surface and an upper surface. The case storage part that stacks and stores the setup type case that is folded so that the bent parts between the tab surfaces are formed at both ends, and the topmost one of the stacked setup type cases A case take-out means for taking out one sheet from above, a case carrying means for carrying out the taken-out set-up case along an arcuate path with one bent portion facing forward in the carrying direction, and a case carrying means located at the carrying end. , A setup table having a horizontal case placement surface, and a setup type that comes into contact with the front-side bent portion of the setup type case being transported at the transport end or in front of the transport end and in combination with the transport force of the case transport means. Ke A box-opening biasing means for imparting a force in the box-opening direction to the box, a folded setup type case is taken out from the case storage section, opened by the case-conveying means during conveyance, and the case is completely opened. Is supplied to the horizontal mounting surface of the mounting table.

Further, the invention according to claim 2 is different from the invention according to claim 1, in that the case take-out means is an uppermost set-up case which is housed in a horizontal posture in the case housing part. A case erection mechanism that changes the posture in the erection direction while lifting it in a sucked and held state, and has a spatula member that the case transfer means inserts into a facing space of adjacent surfaces via one bent portion of the setup type case. It is characterized in that the spatula member is inserted into the setup type case that has been erected by the case erection mechanism so that the setup type case is inherited.

Further, in the invention described in claim 3, in contrast to the invention described in claim 2, the case carrying means is a spatula member, and a carrying guide member having a guide surface formed along an arcuate trajectory. It is characterized by comprising a gripping and conveying arm for conveying one surface of the setup type case while pressing the one surface of the setup type case onto the guide surface with the spatula member while holding the setup type case with the spatula member.

Further, the invention according to claim 4 is based on claim 1,
In the inventions described in 2 and 3, the box opening urging means is a mounting surface of the mounting table. Further, the invention according to claim 5 is different from the invention according to claim 1, in that the case take-out means holds the case by holding the case by adsorbing it from the upper side of the case housing portion to the upper surface of the uppermost setup type case. It is a member, and is characterized in that the case transport means is a rotary arm mechanism that transports the suction member from the case storage portion to the mounting table along an arcuate trajectory while maintaining the case suction posture.

Further, according to a sixth aspect of the present invention, in addition to the fifth aspect of the invention, the box opening urging means extends along the arcuate track of the case conveying means from before the conveying end to the conveying end. It is characterized in that it is a curved slide surface provided.

[0014]

According to the first aspect of the present invention, the setup type case taken out upward from the case storing section is automatically opened by the box opening urging means during the conveyance by the case conveying means, and thereafter the conveyance end is carried out. Is placed on the table. In this case, since the case transporting means transports the case along the arcuate path, it can be realized with a simple structure such as a rotating arm.

According to the second aspect of the present invention, since the case transfer means having the spatula member transfers the set-up case in which the case take-out means is taken out from the case storage section and is in the upright posture, it is set up at the time of transfer. It is possible to grasp the rear end side of the die case in the carrying direction, and as a result, the case can be placed on the placing table without the case conveying means moving below the placing table at the end of the conveying. In this respect as well, the mechanical complexity can be eliminated.

According to the third aspect of the invention, the case carrying means can be realized by a single drive mechanism which basically rotates the arm. According to the fourth aspect of the invention, the placement surface at the end of the conveyance can be used also as the box opening urging means. Claim 5
According to the invention described in the above, it is easy to attach the suction member as the case take-out means to the arm tip of the case carrying means including the rotating arm via a mechanism that always supports the suction member in the same posture regardless of the rotation angle of the arm. With the configuration, two cases, that is, a case take-out means and a case carrying means can be realized.

According to the sixth aspect of the present invention, the automatic box opening action can be suitably exerted in the configuration of the case take-out means and the case transport means of the fifth aspect.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A set-up type automatic box opening device of the present invention will be specifically described below with reference to the drawings. First Embodiment [Explanation of Configuration of Carton Caser] FIG. 1 is a perspective view of a main part of a carton caser according to a first embodiment. For the sake of explanation, the direction indicated by arrow A in the figure is forward, the opposite direction is backward, and arrow A
The horizontal direction orthogonal to is referred to as the horizontal direction.

FIG. 2 is a view showing a set-up type carton used in this carton caser.
Is a plan view, (b) is a plan view of the original plate, and (c) is a perspective view after the box is opened. The carton case 10 is made of, for example, paperboard, cardboard and plastic, and is shown in FIG.
As shown in (a), it has a bottom surface 1, tab surfaces 2 and 3, and an upper surface 4, and a bent portion 1a is provided between the bottom surface 1 and the tab surface 2, and a bent portion is provided between the top surface 4 and the tab surface 3. A bent portion 4a is formed, and the bent portion 1a and the bent portion 4a are formed at both ends of the carton case 10 (however, in FIG. 2A, the bottom surface 1 and the tab surface 3 are hidden). .

The carton case 10 is manufactured from the die-cut original plate 10a shown in FIG.
When opened by 00, the carton case 10b as shown in FIG. Although not shown, when the carton case 10b is assembled, it finally becomes a rectangular parallelepiped. As shown in FIG. 2B, the die-cut original plate 10 a further includes a rectangular bottom surface 1, a pair of rectangular tab surfaces 2 and 3 extending from the short sides of the bottom surface 1, and a tab surface 3. An extended upper surface 4, a pair of rectangular outer flaps 5 and 6 extended from the long side of the bottom surface 1, a joint portion 7 further extended from the upper surface 4, a tab surface 2 and a tab surface. Inner flaps 2a, 2b and inner flaps 3a, 3b extended from 3
And the inner flaps 5a extending from the outer flaps 5 and 6,
And 6a.

The carton case 10 is a die-cut original plate 1.
0a is bent at the bent portion 1a between the bottom surface 1 and the tab surface 2 and the bent portion 4a between the top surface 1 and the tab surface 3, and the joint margin portion 7 and the tab surface 2 are bonded to each other. Manufactured. As shown in FIG. 1, the carton caser 100 is a magazine 2 for storing the carton cases 10 in a vertically stacked state.
0 and the topmost carton case in the stack 10
Is held at a fixed suction position P1, and the suction lever 30 for standing it up to a constant standing position P2 and the standing carton case 10 are moved along the arc-shaped guide surface 51 to the conveyance end position P3 while gripping. Carton transport section 40
And a belt surface which also serves as a box opening urging means for opening the carton case 10 at the conveyance end position P3 and carries out the opened carton case 10b.
And a control unit (not shown) for controlling the operation of each of the above units. The arrow B in the figure indicates the direction in which the carton carrying section 40 carries the carton case 10.

The magazine 20 is in the form of a frame that is long in the vertical direction, and has a large number of carton cases 10 in which the bottom surface 1 and the tab surface 2 of the carton case 10 face downward and the bent portion 1a faces forward. It can be stacked with. In addition,
A slight gap is formed between the magazine 20 and the carton case 10 so that the stacked carton cases 10 can easily slide in the magazine 20 in the vertical direction.

A carton elevating unit 21 for elevating the carton case 10 in the magazine 20 is installed adjacent to the magazine 20. The carton lifting unit 21 has a lifting table 22 on which the carton case 10 can be placed, and by storing the carton case 10 on the lifting table 22 in the magazine 20, the carton case 10 is stacked. The case 10 can be raised and lowered.

Further, the carton lifting unit 21 is equipped with a mechanism (not shown) for detecting the uppermost position of the stacked carton cases 10 and the presence or absence of the carton cases 10 by an optical sensor or the like, and the control section is provided. The detection result is notified to. Further, the control unit raises the lifting table 22 based on the detection result, and controls so that the uppermost carton case 10 is always located at the suction position P1 of a constant height. That is, every time one carton case 10 is taken out from the magazine 20, the lifting table 22 is raised accordingly.

The carton elevating unit 21 is the same as the elevating unit generally used in sheet-fed printing, and a detailed description thereof will be omitted. FIG. 3 is a side view of a main part of the carton caser 100 of FIG. 1 viewed from the lateral direction. As shown in the drawing, the suction lever 30 is attached with a trumpet-shaped suction pad 31 for sucking the carton case 10, and the suction lever 30 is sucked around a rotation shaft 32 extending in the lateral direction behind the suction position P1. It can be rotated upward and backward from the position P1 by 95 °. The pad portion at the tip of the suction pad 31 is made of silicone rubber, urethane rubber, NB
It is formed of a rubber elastic body such as R, and an air hole for suctioning is provided at the center thereof. The size and the number of the suction pads 31 to be installed are determined in consideration of the size and weight of the carton case 10. Normally, one to several pads having a diameter of the pad portion of about 10 to 50 mm are installed.

Further, the suction lever 30 is connected to a stepping motor 33 for driving the rotation thereof by a drive belt 34, and the suction pad 31 is flexible to a vacuum pump 35 with an electromagnetic valve for driving the suction suction. Conduit 36
Are connected by In such a suction lever 30, as shown in FIG. 3, by driving the stepping motor 33 and the vacuum pump 35, the upper surface of the carton case 10 at the suction position P1, that is, the bottom surface 1 and the tab surface 3 is moved.
Can be adsorbed and rotated by 95 °, and this can be erected at the erected position P2 above the rotary shaft 32. Furthermore, the carton case 10 can be removed and returned to the original suction position P1. The carton case 10 standing upright in the standing position P2 is slightly tilted rearward, and the tab surface 2 and the top surface 4 are on the front side, the bottom surface 1 and the tab surface 3 are on the rear side, and the bent portion 1a is on the upper end. It is directed.

In accordance with an instruction from the control unit, the stepping motor 33 and the vacuum pump 35 are driven in accordance with the movement of the carton lifting unit 21 to cause the suction lever 30 to perform a series of operations of suction → standing → desorption → return. repeat. As shown in FIG. 1, the carton carrier 40
A pair of left and right symmetrical spatula arms 41 having spatula plates 47 for gripping the carton case 10, and a pair of laterally extending spline shafts serving as axes for rotating the spatula arms 41 in an arc shape. 42 and arm 4 with spatula
1. A pair of electromagnetic valve-equipped air cylinders 43 for laterally reciprocally driving 1; a stepping motor 44 for rotationally driving the spatula-equipped arm 41; and an arc-shaped transfer for guiding the carton case 10 during transfer. It is composed of a guide 50 and the like.

The carton case 10 is positioned on a straight line behind the standing position P2 of both spline shafts 42, and each spline shaft 42 is supported by a bearing 42a so as to be rotatable and reciprocally movable in the lateral direction. ing. Each air cylinder 43 is connected to each spline shaft 42.
The arm 41 with a spatula connected to the end of the spline shaft 42 can be laterally reciprocally driven. That is, both air cylinders 43 can push the spline shaft 42 at the same time to close the spatula arm 41, and both air cylinders 43 can pull the spline shaft 42 at the same time to open the spatula arm 41.

The stepping motor 44 has a drive shaft 44a.
Is installed below the spline shaft 42 in the horizontal direction, and a pulley 42b is provided beside the bearing 42a. The pulley 42b is rotatable with the step line shaft 42 and is engaged so that the step line shaft 42 can slide laterally. The drive shaft 44a is connected to the pulleys 42b and the drive belt 45.
The spline shafts 42 can be simultaneously driven to rotate by being connected by. Then, the stepper motor 44 is used to move the arm 4 with a spatula.
As shown in FIG. 3, 1 can be rotationally driven in a range of 180 ° from the front (S1 in the drawing) to the upper (S2 in the drawing) to the rear (S4 in the drawing).

Here, the installation position of the spline shaft 42, the length and attachment position of the spatula-equipped arm 41, etc. can be determined by closing the spatula-equipped arm 41 when the spatula-equipped arm 41 is located at the front, and the carton at the standing position P2. Bottom 1 of case 10
So that the spatula plate 47 is inserted between the knob surface 3 and the knob surface 3, and when the spatula arm 41 is positioned rearward,
Is set to be located at the conveyance end position P3. Therefore, with the rotation of the arm 41 with a spatula, the spatula plate 47 draws a 180 ° arcuate path between the standing position P2 and the conveyance end position P3.

As shown in FIG. 1, the transport guide 50 has a smooth arc-shaped guide surface 51 formed in a predetermined width from the standing position P2 to the transport end position P3. The guide surface 51 is formed along the inner side of the arcuate trajectory drawn by the spatula plate 47 (see FIG. 3), and when the carton case 10 is transported, the guide surface 51 is a spatula plate 47 inserted into the carton case 10, It is formed so that it can slide while pressing 3 on the guide surface 51. However, in order to secure an operation space for the suction lever 30, the guide surface 51 is not provided near the upright position P2 (angle range of about 20 °), and the front end 52 of the guide surface 51 has a notch 53. Are formed. In addition, this front end 5
2 is located above the suction lever 30 and below the bent portion 1a of the upright carton case 10.

It is desirable that the predetermined width of the guide surface 51 is set to a width that allows the carton case 10 to be stably placed on the surface even if the carton case 10 is slightly displaced laterally during transportation. For example, the width may be set to about the combined width of the tab surface 3 and the inner flaps 3a and 3b (3d in FIG. 2A). The transport guide 50 is, for example,
Although it can be configured by installing two arcuate rails having an L-shaped cross section at a predetermined interval, a carton case 10 having a guide surface with a predetermined width such as the guide surface 51 is more reliable. It is preferable in that it can be guided and can be adapted to changes in carton size.

FIG. 4 is a perspective view showing the structure near the tip of one of the spatula-equipped arms 41. The detailed structure of the arm 41 with a spatula is as follows. The spatula arm 41 includes a pair of bar-shaped arm members 46 (see FIGS.
), A spatula plate 47 extending laterally from the tips of both arm members 46, a pair of support members 48 attached to each spatula plate 47, and a spatula further outward from the tips of both arm members 46. A pair of auxiliary support members 4 extending along the plate 47
It is composed of 9 and 9.

The spatula plate 47 is a rectangular plate having a thickness of about 10 mm, and the pressing surface 47a is oriented in the rotation axis direction so that the tab surface 3 can be easily pressed on the guide surface 51 (see FIG. 3). ). The width 47b of the spatula plate 47 is equal to the height 3 of the tab surface 3.
Although it is set to a value smaller than c, the spatula plate 47 has a tab surface 3
Has a role of pressing the guide surface 51 against the width 47b.
It is desirable that the value of is not less than half of the height 3c and less than a value smaller than the height 3c by several mm.
7c is also set to a length capable of pressing the tab surface 3 against the guide surface 51. Further, the spatula plate 47 has a blade-like tip so that it can be easily inserted into the carton case 10.

When the spatula plate 47 is inserted, the influence of the thickness of the spatula plate 47 and the deviation of the angle between the carton case 10 and the spatula plate 47 (the spatula plate 47 and the carton case 10 are deviated by 5 °) and the like. Then, the carton case 10 is bent (see S1 in FIG. 3). Both support members 48 are provided so that the arm 41 with a spatula holds the carton case 10 at a reference position, and its mounting position is on the holding surface 47a of the spatula plate 47 in the carrying direction (direction of arrow B). hand,
When the spatula plate 47 is inserted into the carton case 10 at the upright position P2, both support members 48 move the outer flaps 5, 6
Ends 5b and 6b on the side of the knob surface 3 (specifically, ends 5b and 6
In b, it is provided below the inner flaps 3a and 3b).

Therefore, with the spatula plate 47 inserted in the carton case 10 in the standing position P2, the suction lever 3
When the adsorption of 0 is stopped and the carton case 10 is removed,
The ends 5b and 6b abut on both support members 48, and the outer flaps 5 and 6 are supported by both support members 48. Therefore, the carton case 10 is always held by the arm 41 with the spatula at a constant reference position.

Since the carton case 10 is slightly tilted backward when standing up, the detached carton case 10 tries to fall backward, but is kept in the standing state by contacting the front end 52 of the conveyance guide 50. (See S1 in FIG. 3). The auxiliary support member 49 has a rectangular plate shape, and is provided outside the spatula plate 47 and perpendicular to the spatula plate 47. Also,
The position and size of the auxiliary support member 49 are set so as to contact the bent portion 4a when the carton case 10 is supported by the both support members 48 (FIG. 3).
See S2 and S3).

The auxiliary support member 49 pushes the bent portion 4a in the carrying direction, so that the carton case 1 can be carried during carrying.
It prevents 0 from falling forward and assists the opening operation. The carton transport unit 40 has such a configuration, and in accordance with the instruction of the control unit, the air cylinder 43 and the stepping motor 4 are moved together with the movement of the suction lever 30.
Inserting a spatula at the standing position P2 by driving 4 →
A series of operations of carton transfer to the transfer end position P3, removal of the spatula at the transfer end position P3, and return of the spatula-equipped arm 41 to the standing position P2 are repeated.

The description will be made again with reference to FIGS. The belt conveyor 60 directs the upper surface of the belt 61 in the horizontal direction,
The belt 61 is provided so as to pass through the carrying end position P3, and the upper surface of the belt 61 at the carrying end position P3 serves as a slide surface for sliding the tip of the carton case 10 to open it. Further, the belt conveyor 60 is provided so that the belt 61 moves laterally.

Further, the belt conveyor 60 is provided with a partition 62 extending vertically upward from the rear end portion of the belt 61 at the conveyance end position P3. This partition 6
2 is for assisting the opening of the carton case 10, and the space between the partition 62 and the rear end 53 of the guide surface 51 is the length 1b of the bottom surface 1 of the carton case 10 (see FIG. 2). A slightly larger value (generally 120% of length 1b
Since the carton case 10 is sandwiched between the partition 62 and the guide surface 51 at the end of the box opening operation, the box opening is completed more reliably.

The belt conveyor 60 operates intermittently in accordance with the movement of the carton carrier 40 under the instruction of the controller, that is, it stops during the opening operation of the carton case 10 and opens it. The carton case 10b is carried out by driving after the spatula is extracted from the carton case 10b. [Description of Operation of Carton Caser 100] Next, the operation of the carton caser 100 will be described. 5 (a),
(B) is a perspective view explaining the box opening operation of the carton caser 100, and corresponds to the states of S3 and S4 in FIG.

In the initial state, the lifting table 22 of the carton lifting unit 21 is located in the lower part of the magazine 20,
The suction lever 30 is erected, and the spatula arm 41 is located at the front and is open. First, the worker uses the carton case 10
Are stored in the magazine 20 in a state of being stacked on the lift table 22.

The carton caser 100 operates as follows based on an instruction from the control unit. In the carton lifting unit 21, the uppermost carton case 10 is always in the suction position P until the stored carton case 10 is exhausted.
Raise the lifting platform 22 so that it is located at 1. The stepping motor 33 is driven to tilt the suction lever 30 forward, and the vacuum pump 35 is suction-driven to suck the uppermost carton case 10. Then, the suction lever 30 is raised while suctioning, and the carton case 10 is raised.

Then, the air cylinder 43 is driven to insert the spatula-equipped arm 41 into the standing carton case 10. When the suction of the vacuum pump 35 is stopped,
As shown in S1 of FIG. 3, the carton case 10 is supported by the spatula arm 41. Here, since the end portions 5b and 6b of the outer flaps 5 and 6 are supported by the both support members 48, the carton case 10 is provided with the spatula arm 41 even if the suction position of the suction lever 30 is slightly deviated.
Therefore, it is always supported at a fixed reference position. Further, the carton case 10 is slightly opened by the insertion of the spatula plate 47 and is in a bent state.

Then, by driving the stepping motor 44 to rotate the arm 41 with a spatula rearward (direction of arrow B), the carton case 10 is conveyed in an arcuate path. Along with this conveyance, the bent portion 1a at the tip of the carton case 10 also moves in an arc shape, and the bent portion 1a is in an upright state, facing upward, but laterally (S2 in FIG. 3), and further downward. (S3 in FIG. 3), the conveyance end position P3 is approached.

In S3 of FIG. 3 (FIG. 5 (a)), the bent portion 1a slides backward while being pressed against the upper surface of the belt 61. At this time, the carton case 10
The tab surface 3 is pressed by the spatula plate 47 and the guide surface 51, and the support members 48 push the end portions 5b and 6b of the outer flaps 5 and 6 in the conveying direction.
a is pushed up relatively by the guide surface 51,
The carton case 10 is opened. During this box opening operation, the auxiliary support member 49 also pushes the bent portion 4a in the transport direction to assist the box opening operation.

During the box opening operation, the carton case 10 is held by the spatula-equipped arm 41 at the reference position, so that the box opening operation is surely performed. Then, as shown in S4 of FIG. 3, the transported carton case 10 is sandwiched between the partition 62 and the guide surface 51 at the transportation end position P3, and the box opening is completed more reliably. And
The carton case 10b that has completed the box opening is placed on the belt 61 with the tab surface 3 standing upright on the belt 61 and the bottom surface 1 facing the belt 61 (see FIG. 5B).

Subsequently, the air cylinder 43 is driven to open the spatula arm 41 to remove the spatula plate 47 from the carton case 10, and the stepping motor 44 is driven to return the spatula arm 41 to the suction position P1. . After the spatula plate 47 is pulled out, the belt conveyor 60 is driven to move the opened carton case 10b to the transport end position P.
Carry out from 3 to the specified position.

The carton caser 100 repeats the above operation and stops when the carton case 10 in the magazine 20 is exhausted. Since the claw surface 3 gripped by the carton carrier 40 does not face the belt 61 when the opening of the box is completed, it is not necessary to make the spatula arm 41 slip under the belt 61. Therefore, the belt conveyor 60 can be easily installed at the conveyance end positions P3 and P4, and the structure of the carton caser 100 can be simplified.

In this embodiment, the suction lever 3
The rotation shaft 32 of 0 is located behind the suction position P1 and erects the carton case 10 rearward, but the rotation shaft is located in front of the suction position P1 and stands up front. Can also be Further, in this embodiment, the carton case 10 is erected at 95 °, but the erection angle can be similarly performed at an angle of about 90 to 100 °.

Further, in this embodiment, the suction lever 3
Although the carton case 10 is erected at 0, it is also possible to erect the carton case 10 with a spatula or the like without adsorption. In addition, in the present embodiment, the spatula-equipped arm 41 is used.
Is rotated by 180 degrees, but the rotation angle of the spatula-equipped arm 41 can be similarly set by setting it within a range of about 90 degrees to 180 degrees.

Further, in this embodiment, the support member 48 is used.
The end portions 5b, 6b of the outer flaps 5, 6 are supported by the spatula-equipped arm 41 to hold the carton case 10 at the reference position, but the carton case 10 is supported by supporting the bent portion 4a. It is also possible to hold at the reference position. Although the spatula plate 47 is used for the spatula-equipped arm 41 in the present embodiment, the spatula shape may be a bar shape instead of a plate shape.

Further, in the present embodiment, the carton carrying section 40 carries the carton case 10 by sliding it while holding the tab surface 3 on the guide surface 51 with the spatula plate 47, but the carrying guide 50 is installed. Instead, instead, the mechanism for pressing the tab surface 3 against the holding spatula plate 47 may be provided in the spatula-equipped arm 41 to carry the same. Further, in the carton case 100 of this embodiment, the carton case 1
The tab surface 3 of 0 is pressed by the spatula plate 47 so that the bent portion 1a is pressed against the belt 61. However, the upper surface 4 is pressed by the spatula plate, and the bent surface 4a is pressed by the spatula plate. It is also possible to adopt a structure in which they are pressed against each other.

(Second Embodiment) [Description of Configuration of Carton Caser] FIG. 6 is a perspective view of a main part of a carton caser according to a second embodiment. For the sake of explanation, the direction indicated by arrow C in the figure is forward, the opposite direction is backward, and arrow C
The horizontal direction orthogonal to is referred to as the horizontal direction.

This carton caser 200 is similar to the first embodiment in that the carton case 10 shown in FIG.
It is a device for opening a box like a carton case 10b shown in (c). The carton caser 200 is configured so that the carton case 10 can be opened by two lines, and the pair of magazines 110a and 110b for accommodating the carton case 10 in a vertically stacked state and the magazine 110a,
The uppermost carton case 10 stacked on 110b
Is transported by the carton suction transport unit 120 and the carton suction transport unit 120 that move the workpieces at constant suction positions Q1 and Q2 and move them in parallel to the transport end positions Q3 and Q4 along the arcuate trajectory projecting upward. Carton case 1
A pair of slide members 160a and 160b formed with sliding curved surfaces 161a and 161b for pressing the bent portion 1a at the end of 0 to open the box, and the opened carton case 10b.
Belt conveyor 1 for unloading paper from transport end positions Q3 and Q4
70, and a control unit (not shown) for controlling the operation of each of the above units. The arrow D in the figure indicates the direction in which the carton suction conveyance section 120 conveys the carton case 10.

The pair of magazines 110a and 110b are arranged side by side in the lateral direction. Each magazine 110a, 1
10b has the same configuration as the magazine 20 of the first embodiment, but the front and rear directions of the stored carton case 10 are opposite, and the bottom surface 1 and the tab surface 2 of the carton case 10 face downward and are folded. They are stacked with the curved portion 1a facing rearward.

A carton elevating unit 111 (not shown in FIG. 6, see FIG. 7) similar to the carton elevating unit 21 of the first embodiment is installed adjacent to each magazine 110a, 110b. The uppermost carton case 10 always has a fixed height Q
It is located at 1, Q2. FIG. 7 is a side view of the main parts of the carton caser 200 of FIG. 6 viewed from the lateral direction.

As shown in the figure, the carton suction transfer section 12
0 is for moving a pair of suction blocks 130a and 130b for sucking and holding the carton case 10 and moving the suction blocks 130a and 130b from the suction positions Q1 and Q2 to the transport end positions Q3 and Q4 in an arc shape. Parallel link section 140, a stepping motor 150 for driving the parallel link section 140, and a suction block 130.
and a vacuum pump 151 with a solenoid valve for suction-driving a and 130b.

A pair of suction blocks 130a, 130b
Are suspended by the parallel link portion 140 and are supported laterally at a predetermined distance from each other. Each suction block 130a, 130b includes a plurality of suction pads 13
1, mounting plates 132a and 132b that are long in the front-rear direction for mounting the suction pad 131, and the mounting plate 132
A pair of rod-shaped vertical support arms 133a, 13 for suspending and supporting the a, 132b from the parallel link portion 140.
3b and plungers 134a, 134b for attaching the vertical support arms 133a, 133b to the parallel link part 140 in a swingable manner in the front-back direction.

Each suction pad 131 is similar to the suction pad 31 of the first embodiment. Each mounting plate 132a, 132
Two suction pads 131 are attached to b with their lower ends (suction surfaces) aligned at the same height. The two suction pads 131 are arranged in front and rear so that the upper surface 4 of the carton case 10 can be sucked. The suction pads 131 are connected to the vacuum pump 151 by the flexible conduit 152.

Considering that the size of the carton case 10 to be used and the suction position Q1 can be promptly responded to, the suction pad 131 can be attached to the attachment plates 132a and 132b by using long holes. It is desirable that the mounting position can be adjusted to the front, rear, left and right, and that it can be adjusted in the vertical direction by bolts.

The parallel link portion 140 has a drive arm 14 which rotates in an arc shape around a drive shaft 141 extending in the lateral direction as an axis.
2, a driven arm 146 that rotates about a driven shaft 145 that extends rearward and a predetermined distance from the drive shaft 141 and extends laterally, and the drive arms 142 and 146 while suspending the suction blocks 130a and 130b. It is composed of a pair of link connecting parts 149a and 149b that are parallelly moved while being supported by.

One end of the drive arm 142 has a drive shaft 141.
Drive arm member 143 rotatably attached by
And a laterally extending drive link shaft 144 rotatably attached to the tip of the drive arm member 143 with a bearing. The drive link shaft 144 is 180 °.
The circular arc-shaped orbit can be translated.

The driven arm 146 has a structure similar to that of the drive arm 142. The driven arm member 147 has an end portion attached to the drive shaft 145, and the driven arm member 14.
7 and a driven link shaft 148 extending in the lateral direction which is rotatably attached to the tip end of the driven shaft 7 by means of a bearing.
It is possible to translate a circular arc-shaped orbit.

A pair of link connecting parts 149a, 149b
Is a rod-shaped member that is long in the front-rear direction, both ends of which are attached to the drive link shaft 144 and the driven link shaft 148, and both are provided laterally at a predetermined interval. The drive link shaft 144 and the driven link shaft 148 are connected by the link connecting parts 149a and 149b in parallel with each other with a predetermined distance in the front and rear. This distance is the same as the drive shaft 141 and the driven shaft. It is set to be the same as the interval of 145. Therefore, as the drive arm 142 rotates, the driven arm 146 is driven in parallel therewith, and the link connecting parts 149a and 149b are moved in parallel along the arcuate orbit while horizontally oriented in the front-rear direction. .

Incidentally, the vertical support arms 133a, 133
The upper end of 33b is attached to the link connecting parts 149a and 149b via the plungers 134a and 134b. The stepping motor 150 has a drive shaft 14
1 is connected to the link connecting parts 149a and 149b by driving the stepping motor 150.
Is moved in a circular arc, and the suction block 1
30a and 130b can be moved in parallel in an arc shape.

Here, the link connecting parts 149a, 149
The horizontal mounting position of b on the link shafts 144 and 148 is set according to the positions of the magazines 110a and 110b. Further, the position of the drive shaft 141 and the arm member 1
43, 147 length, vertical support arms 133a, 133
The length of b is determined by the suction blocks 130a, 130b as the suction blocks 130a, 130b move back and forth in parallel.
The lower end of the suction pad 131 of 0b is set to move between the suction positions Q1 and Q2 and the transport end positions Q1 and Q2.

In such a carton suction transport unit 120, the carton lifting unit 1 is operated under the instruction of the control unit.
By driving the vacuum pump 151 and the stepping motor 150 in accordance with the movement of 11, the suction position Q1,
Adsorption of the carton case 10 in Q2 → Transfer to the transfer end positions Q34 and Q4 in an arcuate orbit → Desorption of carton →
The operation of returning the suction blocks 130a and 130b to the suction positions Q1 and Q2 is repeated.

Next, the structure of the slide members 160a and 160b will be described. Here, the slide member 160 is used.
Only b will be described, and the description of the slide member 160a is omitted because it is the same as this. Slide member 160b
Is composed of a pair of plate materials arranged in parallel in the lateral direction with a predetermined space therebetween, and is provided along the track of the carton case 10 conveyed by the suction block 130b. The plate member of the slide member 160b is made of a plastic plate having a thickness of about 20 mm, and the suction block 13 is provided on the lower front side thereof.
A slide curved surface 161b is formed by cutting along an arcuate trajectory drawn by the carton case 10 conveyed at 0b.

In this embodiment, the sliding curved surface 161b
The shape of is a circular arc shape of about 90 °, but in general, the shape of the slide curved surface 161b is preferably a circular arc shape of about 60 to 90 °. Also, slide curved surface 1
The rear end 163b of 61b faces the vertical direction. The position of the rear end 163b corresponds to the position of the tab surface 2 of the carton case 10b which has been transported to the transport end position Q4 and opened.

The front end 162 of the slide member 160b is
b is obliquely cut so that the tab surface 2 is easily guided to the slide curved surface 161b. With such a configuration of the slide member 160b, the suction block 130b
In the carton case 10 transported by, the bent surface 1b is pressed against the sliding surface 161b while the tab surface 2 slides, and the box is gradually opened, and is guided to the transportation end position Q4.

An appropriate value for the length of the sliding curved surface 161b varies depending on the radius of curvature of the arc-shaped orbit drawn by the carton case 10 and the size of the carton case 10, and is set in consideration of them. , The length 1c of the bottom surface 1 of the carton case 10 is 120 mm, the height 3c of the tab surface 2 is 60 mm, and the arm members 143, 147.
If the length (curvature radius of arcuate orbit) is 200 mm, the sliding curved surface 161b may have a radius of 200 mm and an arc shape of 90 °, and the length may be set to about 315 mm.

The predetermined interval between the pair of slide members 160b is also set based on the size of the carton case 10 so that the box can be opened smoothly. This predetermined interval is shorter than the length of the bent portion 1b so that the tab surface 2 can slide, and the vertical support arm 133b and the attachment plates 132a, 1a, 1a so as not to hinder the arc movement of the suction block 130b.
32b and the suction pad 131 are set so that they can pass through the gap between the plate materials. It is desirable that the slide members 160b be attached so as to be slidable in the lateral direction so that the mutual intervals can be changed according to the change in the size of the carton case 10.

Although the slide member 160b can be composed of only one plate, it is better to form the pair of plates as described above in that the carton case 10 can be smoothly guided. Further, for example, it is possible to form a slide member 160b by bending a single stainless steel plate into an arc shape, but it is better to form the slide member 160b as described above by changing the size of the carton case 10. It is desirable because it can be easily handled.

The belt conveyor 170 has its belt 17
1 has passed the conveyance end positions Q3 and Q4, and the moving direction of the belt 171 is the lateral direction. The upper surface of the belt 171 is oriented in the horizontal direction, assists the opening of the carton case 10, and mounts the carton case 10b opened by the carton suction transport unit 120 and the slide members 160a and 160b. It is like this.

The above-mentioned slide curved surfaces 161a, 16
The rear ends 163a and 163b of 1b are located near the rear end of the belt 171. In addition, the belt conveyor 1
A partition 172 extending vertically upward from the front end of the belt 171 is installed at the conveyance end positions Q3 and Q4 of the belt 70. This partition 172 is for assisting the opening of the carton case 10.

The distance between the partition 172 and the rear ends 163a and 163b is set to a value which is almost equal to the width of the belt 171 and slightly larger than the length 1c (see FIG. 2) of the bottom surface 1 of the carton case 10. And at the end of the box opening operation,
Carton case 10 has partition 172 and slide curved surface 16
By being sandwiched between 1a and 161b, the box opening is surely completed.

Under the control of the control unit, the belt conveyor 170 is stopped during the opening operation of the carton case 10 according to the movement of the carton suction conveyance unit 120, and the opened carton case 10b is removed. The carton case 10b is unloaded by intermittently operating after being driven. Since the carton suction transport unit 120 is a mechanism that suctions the carton case 10 from above and moves it in an arc shape protruding upward as described above, the suction blocks 130a and 130b and the parallel link portions are transported to the transport end positions Q3 and Q4. The belt conveyor 170 can be easily installed at the conveyance end positions Q3 and Q4 without the need to go under. Therefore, the structure of the carton caser 200 can be simplified.

[Explanation of Operation of Carton Caser 200] FIG. 8 is a diagram for explaining an opening operation of the carton caser 200. In the initial stage, the lifting table 112 of the carton lifting unit 111 is located in the lower part of the magazines 110a and 110b, and the suction blocks 130a and 130b are located in the upper part of the arcuate track.

First, with the operator stacking the carton case 10 on the lifting table 112, the magazine 110a,
It is stored in 110b. The carton caser 200 operates as follows based on an instruction from the control unit. The carton elevating unit 111 raises the elevating table 112 so that the uppermost carton case 10 is always located at the suction position Q1, Q2 until the carton cases 10 stored in the magazines 110a, 110b are exhausted.

The carton suction transport unit 120 drives the stepping motor 150 to drive the suction blocks 130a, 13a.
0b is moved to the front suction positions Q1 and Q2, and the vacuum pump 151 is suction driven to suck the uppermost carton case 10. Each suction block 130a, 130
The upper surface 4 is adsorbed by b, and the carton case 10 is held horizontally (FIG. 8A).

Then, the stepping motor 150 is driven to convey the carton case 10 along an arcuate path (FIG. 8 (b)). During transportation, the carton case 10 is slightly opened due to its own weight.
Further, as shown in (c) → (d) → (e) of FIG. 8, the tab surface 2 at the tip of the carton case 10 has the slide curved surfaces 161a and 161 in a state where the upper surface 4 is held by the transportation.
Slide b. Along with this, the bent portion 1a of the carton case 10 is gradually pushed down in the direction of the center of curvature (direction of arrow E in FIG. 8C) by the slide curved surfaces 161a and 161b, thereby opening the carton case 10. Is done. In this way, the slide curved surfaces 161a, 16
Since 1b is formed so that not only the bent portion 1a of the carton case 10 but also the tab surface 2 slides, the box opening can be performed more smoothly.

Further, the carton case 10 is reliably transported to the transport end positions Q3 and Q4 while being guided to the slide curved surfaces 161a and 161b. The suction block 130
Even if the positions at which the a and 130b suck the carton case 10 are slightly displaced, the suction blocks 130a and 130b
Can swing back and forth with respect to the parallel link portion 140 by the action of the plungers 134a and 134b, so that the sliding curved surfaces 161a and 161b can slide the grip surface 2 of the carton case 10 during the box opening operation. , 130b are adjusted in position. In addition, the action of the plungers 134a and 134b reduces the impact when the carton case 10 hits the slide curved surfaces 161a and 161b, so that the box opening can be performed more smoothly.

As shown in FIG. 8 (d), the carton case 10 transported to the transport end positions Q3, Q4 is sandwiched between the partition 172 and the slide curved surfaces 161a, 161b, and placed on the belt 171. Since it is pressed down, the opening of the box is completed more reliably. And the opened carton case 1
0b is placed on the belt 171 with the top surface 4 up and the bottom surface 1 down.

Subsequently, the suction drive of the vacuum pump 151 is stopped, the opened carton case 10b is removed and the stepping motor 150 is driven, and the suction block 130a,
130b is returned to the suction positions Q1 and Q2. After the carton case 10b is detached, the belt conveyor 170 is driven to move the opened carton case 10b to the transport end position Q.
Carry out from 3, Q4 to the specified position.

The carton caser 200 is a magazine 110.
The above operation is repeated until the carton case 10 in the a and 110b is exhausted. The operating time for one cycle is
It can be performed in about 1.2 seconds. In the present embodiment, the carton case 200 is shown as an example in which the carton case 10 is opened with two lines, but it is also possible to use one suction block to perform the carton case 10 with one line, or a large size. In the case of opening the carton, it is possible to use one suction line using both suction blocks 130a and 130b.

Further, in the present embodiment, the parallel link part 140 is adapted to be rotated by 180 °, but the rotation angle of the parallel link part 140 is set in the range of about 90 ° to 180 °. By doing so, it can be implemented in the same manner. Further, in the carton caser 200 of the present embodiment, the upper surface 4 of the carton case 10 is adsorbed and the bent portion 1a is pressed against the slide curved surface, but the tab surface 3 may be adsorbed or the bottom surface 1 may be adsorbed. , The bent surface 4a by sucking the tab surface 2
It is also possible to adopt a configuration in which is pressed against the slide curved surface.

Further, in the first and second embodiments, the magazine has a frame shape that is long in the vertical direction, but the same applies when the magazine is inclined and the stacking direction of the carton case 10 is inclined. Can be carried out. Further, in the above-mentioned Embodiments 1 and 2, the upper surface of the belt of the belt conveyor is installed in the horizontal direction, but the same operation can be performed even when the belt is slightly inclined.

In the first and second embodiments, the belt of the belt conveyor is moved in the lateral direction, but the belt may be moved in the front-rear direction. In the first and second embodiments, the carton lifting unit is used so that the suction position is at a constant height. For example, the suction lever 30 of the first embodiment or the mounting plate 132 of the second embodiment.
If a and 132b can be moved up and down, the same operation can be performed without using the carton lifting unit.

Further, in the first and second embodiments, the belt conveyor is provided at the carrying end position to carry out the carrying-out. However, for example, the placing table on which the opened carton case 10b is placed at the carrying end position. The carton case 10b on the mounting table can be sent out by an arm or the like, or an operator can manually take out the carton case 10b on the mounting table.

[0091]

According to the automatic box opening device of the first to sixth aspects, since the setup type case is taken out from the upper part of the case storage portion, a large number of the setup type cases can be stacked, and a large number of them can be stacked. Improves workability when opening the setup type case. Further, it is easy to reduce the height of the entire device to a compact device.

Further, since the case is conveyed on the arcuate path to the case conveyance end position, the conveyance can be smoothly carried out by one drive with a relatively simple structure such as a rotating arm. Further, the transportation and opening of the setup type case can be performed by a series of operations. Further, according to the automatic box opening device of claims 2 to 6, it is not necessary to have a mechanism for gripping the set-up type case or a mechanism for adsorbing the setup type case below the conveyance end position. Is also easy to install, and the structure of the device can be simplified.

Further, according to the automatic box opening device of the first to fourth aspects, even if the setup type case is misaligned when being taken out from the case housing, it is surely opened without being affected by it. It Therefore, it is particularly effective when opening a large setup type case that is likely to be displaced. Further, according to the automatic box opening device of the second, third, and fourth aspects, since the setup type case is opened a little by inserting the spatula member, the box can be opened more smoothly.

Further, according to the automatic box opening device of the fifth and sixth aspects, the set-up type case is opened a little during the transportation, and in particular, according to the automatic box opening device of the sixth aspect, as the transportation progresses. Since the setup type case is opened gradually, the box can be opened more smoothly. Further, according to the automatic box opening device of the fourth aspect, the box opening urging means can be combined with the upper surface of the conveyor or the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a carton caser according to a first embodiment.

FIG. 2 is a view showing a setup type carton used in a carton caser.

FIG. 3 is a side view of a main part of the carton caser 100 of FIG. 1 viewed from the lateral direction.

FIG. 4 is a perspective view showing a configuration near a tip of one spatula arm 41.

FIG. 5 is a perspective view illustrating a box opening operation of the carton caser 100.

FIG. 6 is a perspective view of a main part of a carton caser according to a second embodiment.

FIG. 7 is a side view of a main part of the carton caser 200 of FIG. 6 viewed from the lateral direction.

FIG. 8 is a diagram illustrating a box opening operation of the carton caser 200.

[Explanation of symbols]

 1a, 4a Bent part 2,3 Knuckle surface 4 Upper surface 10 Carton case 20 Magazine 30 Adsorption lever 40 Carton transfer section 41 Spatula arm 47 Spatula plate 48 Support member 49 Auxiliary support member 50 Transfer guide 51 Guide surface 60 Belt conveyor 61 Belt 100 carton caser 110a, 110b magazine 120 carton suction conveyance section 130a, 130b suction block 131 suction pad 134a, 134b plunger 140 parallel link section 160a, 160b sliding member 161a, 161b sliding curved surface 170 belt conveyor 171 belt 200 carton caser

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Katsurakawa 163 Morikawahara-cho, Moriyama-shi, Shiga Gunze Stock Company Shiga Research Institute

Claims (6)

[Claims] 1. A setup having a bottom surface and an upper surface, and a pair of tab surfaces, and being folded so that a bent portion between the bottom surface and the tab surface and a bent portion between the top surface and the tab surface are formed at both ends. The case storage part that stores the mold cases by stacking them in the vertical direction, the case take-out means that takes out one of the stacked setup type cases from the top, and the setup type case that was taken out Case conveying means for conveying along an arcuate trajectory with the bent portion facing forward in the conveying direction, a mounting table located at the conveying end and having a horizontal case mounting surface, and the conveying end or the end thereof. A box opening urging means which comes into contact with the front side bent portion of the setup type case which is being conveyed at the front side and which, together with the conveying force of the case conveying means, imparts an acting force in the box opening direction to the setup type case. Prepare, The automatic setup is characterized in that the folded setup type case is taken out from the base storage part, opened by the case transfer means during transfer, and the case whose opening has been completed is supplied onto the horizontal mounting surface of the mounting table. Box device. 2. A case erection mechanism in which the case unloading means changes the posture to the erection direction while lifting the uppermost set-up case stored in the case storage portion in a horizontal posture while holding the upper surface thereof by suction. Yes, the case transporting means has a spatula member to be inserted into a facing space between adjacent surfaces via one bent portion of the setup type case, and the spatula member is inserted to the setup type case erected by the case erection mechanism. The automatic box opening device according to claim 1, wherein the setup type case is inherited. 3. The case transfer means comprises the spatula member, a transfer guide member having a guide surface formed along an arcuate path, and a setup type case held by the spatula member. 3. The automatic box opening device according to claim 2, further comprising: a gripping and conveying arm that conveys one surface of the guide surface with the spatula member while pressing the guide surface. 4. The automatic box opening device according to claim 1, wherein the box opening urging means is a mounting surface of a mounting table. 5. The case take-out means is an adsorbing member for adsorbing to the upper surface of the uppermost set-up case from above the case accommodating portion to hold the case, and the case carrying means holds the adsorbing member. 2. The automatic box opening device according to claim 1, wherein the automatic box opening device is a rotating arm mechanism that conveys the case from the case storage section to the mounting table along an arcuate trajectory while maintaining the case suction posture. 6. The box opening biasing means is a curved slide surface provided along the arcuate path of the case transporting means from before the transporting end to before the transporting end. 5. The automatic box opening device described in 5.