JP2007204114A - Chuck unit, and automatic packaging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chuck unit and an automatic packaging device capable of reliably and easily expanding a mouth part of a bag when filling a content therein. <P>SOLUTION: For example, when a first chuck unit faces a filling part, an opening drive shaft part is retracted while sucking an outer surface of a packaging bag A together with a suction unit of the filling part with a pair of chuck claws being in a closed state, i.e., with the packaging bag A being held, the distance between the chuck claws is determined, and a mouth part of the packaging bag A is opened. Both side end parts of the opening part of the packaging bag A are depressed so that not only the packaging bag A is sucked and pulled to both sides of the outer surface, but also the width is reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a chuck unit and an automatic packaging apparatus. For example, the chuck unit is attached to a rotary table that rotates intermittently and grips a bag for packaging, and the bag is gripped by a plurality of chuck units. The present invention relates to an automatic wrapping apparatus that transfers a bag body by rotation of a rotary table, and packs the contents into the bag body and seals the mouth of the bag body.

2. Description of the Related Art Conventionally, automatic packaging apparatuses that fill bags with contents such as pharmaceuticals and foods and seal (seal) the mouth of the bags have been used.
This automatic wrapping apparatus includes an intermittent rotary table to which a plurality of holding claws for holding a bag body are mounted, and the intermittent rotary table rotates intermittently, and each holding claw moves to move the bag body supply unit, the bag Stop at the body opening part / content filling part, bag body sealing part, printing part / bag discharging part (station) in sequence, supply the bag, fill the bag, Sealing of the mouth portion of the bag body, and printing and discharging to the bag body are performed (for example, see Patent Document 1, Patent Document 2, etc.).
That is, the bag body supplied from the bag body supply unit is held by the holding claws, intermittently circulates, and for each station to be stopped, the opening of the bag body and the filling of the contents, the mouth of the bag body The seal and the bag are printed sequentially and discharged.
Japanese Patent Laid-Open No. 5-193764 JP-A-6-199317

  The problem to be solved is that, in the above prior art, when the bag body is filled with contents, a relatively large adsorption force is required to adsorb the bag body, and the bag body cannot be adsorbed sufficiently. In other words, there is a case where the mouth portion of the bag body cannot be reliably expanded.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a chuck unit and an automatic packaging device that can reliably and easily expand the opening of a bag body when filling contents.

  In order to solve the above-mentioned problems, the invention described in claim 1 is driven by being detachably mounted on an automatic packaging device, and picks up the packaging bags one by one from a bundle of packaging bags, and the packaging. A chuck that takes a series of steps to expand the opening of the bag body, stuff the contents from the opening of the packaging bag body, and then seal the opening of the packaging bag body to complete the packaging of the contents A pair of gripping means for gripping the packaging bag body from both sides, and a mouth opening mechanism for expanding the mouth of the packaging bag body, the mouth opening mechanism comprising: An attracting member for attracting the outer surface of the packaging bag body at the tip, an attracting member for attracting the packaging bag body in which an air intake path is formed, and a pair of the attracting member and the attracting member A pair of connecting members for connecting the gripping means, and the attracting member for the packaging By retracting the packaging bag body, the packaging bag body is pulled from both sides in a state where the packaging bag body is gripped by the pair of gripping means via the pair of connecting members. It is characterized by widening the mouth of the bag.

  The invention according to claim 2 relates to the chuck unit according to claim 1, wherein the gripping means is provided with a first pressing portion at the tip, and a chuck claw that is rotatable around a predetermined rotation axis. And a chuck claw holder that holds the chuck claw so as to be rotatable about the rotation axis and is provided with a second pressing portion at the tip, and forms a pair. It is characterized in that both outer surfaces of the packaging bag body are pressed and sandwiched by the pressing portion and the second pressing portion.

  According to a third aspect of the invention, there is provided the chuck unit according to the second aspect, wherein the chucking claw is rotated about the rotation axis by displacing the rear end portion of the chuck claw by the rotation operation member. A gripping operation mechanism for gripping or releasing the packaging bag body, and the pulling member of the mouth widening mechanism is attached to the pair of chuck claw holders via the pair of connection members. It is characterized by being connected.

  According to a fourth aspect of the present invention, there is provided the chuck unit according to the second or third aspect, wherein the gripping means moves the chuck claw in a direction in which the first pressing portion and the second pressing portion approach each other. It is characterized by having a biasing means for biasing.

  The invention according to claim 5 relates to the chuck unit according to any one of claims 1 to 4, and constitutes the automatic packaging device, and is attachable to and detachable from a rotary table for transferring the packaging bag body. It is characterized by being attached to.

  According to a sixth aspect of the present invention, the packaging bag body is grasped one by one from a bundle of packaging bag bodies, the mouth of the packaging bag body is widened, and the contents from the mouth of the packaging bag body 6. The apparatus according to claim 1, wherein the chuck unit according to any one of claims 1 to 5 is provided with an intermittent rotational motion. The wrapping bag body is gripped and transferred by the chuck unit and is detachably attached to the rotary table.

  According to the configuration of the present invention, by retracting the attracting member with respect to the packaging bag body, the packaging bag body is attracted, and the pair of gripping means is used for the packaging bag body via the pair of connecting members. The mouth of the packaging bag body can be surely and easily expanded by pressing both sides of the bag.

  The mouth expanding mechanism draws the outer surface of the packaging bag body by retracting the attracting member with respect to the packaging bag body while adsorbing the outer surface of the packaging bag body, and a pair of connecting members. A pair of gripping means connected to the attracting member via the two sides pushes both side portions of the packaging bag body so that the mouth of the packaging bag body is surely and easily expanded.

  1 is a front view showing the configuration of an automatic packaging apparatus according to an embodiment of the present invention, FIG. 2 is a side view showing the configuration of the automatic packaging apparatus, and FIG. 3 is a plan view showing the configuration of the automatic packaging apparatus. FIG. 4 is a block diagram showing the electrical configuration of the automatic packaging apparatus, FIG. 5 is a plan view showing the configuration of the rotary transfer section of the automatic packaging apparatus, and FIGS. 6 to 9 are diagrams of the rotary transfer section. FIG. 10 is a cross-sectional view showing the structure of the chuck unit, FIGS. 11 to 13 are cross-sectional views taken along line AA of FIG. 10, and FIG. 14 is a cross-sectional view of FIG. FIG. 15 is a sectional view taken along the line CC in FIG. 11, FIG. 16 is a plan view showing the structure of the chuck claw of the chuck unit, and FIG. 18 and 19 are flowcharts for explaining the operation of the packaging device. And FIG. 20 and FIG. 21 are explanatory diagrams for explaining the function of the chuck unit and the operation of the discharge unit of the automatic packaging apparatus. It is.

The automatic packaging apparatus 1 of this example is used, for example, to fill a packaging bag A with contents such as medicines and foods, and holds the packaging bag A as shown in FIGS. While rotating intermittently while moving, the rotary transfer unit 2 for transferring the packaging bag A along a predetermined circulation path, the chuck driving unit 3 having a plurality of actuators for driving the chuck claws, and the packaging bag A bag supply portion 4 for supplying A, a filling portion 5 for filling the contents in the packaging bag body A whose mouth portion is expanded, and a mouth portion of the packaging bag body A by heat sealing. For example, a seal unit 6, a printing unit 7 that prints, for example, a product name or a production name on the surface of the packaging bag A, and a discharge unit 8 that discharges a product filled with the contents in the packaging bag A , An adsorption mechanism 9 including a vacuum pump, and air constituting an actuator connected to an air (compressed air) generation source Air supply mechanism for supplying air to the cylinder (not shown), and a controller 12 for controlling each component of the apparatus.
In this example, the packaging bag A is a synthetic resin film having a bottom and an open upper end, and is formed of a multilayer film in which a heat seal layer capable of heat fusion is formed on the inner layer. .

As shown in FIGS. 1, 4, and 5, the rotary transfer unit 2 includes four first chuck units 14 ₁ , second chuck units 14 ₂ , and third chuck units for gripping the packaging bag A. 14 and ₃ and the fourth chuck unit 14 ₄ is rotating table (index table) 15 which is worn taken to be placed at equal angular intervals (90 °), around a rotation axis along the rotation table 15 in a vertical direction A rotation driving unit 16 that rotates and a position detection unit 17 that detects the arrangement state of each chuck unit are provided.
The rotary transfer unit 2 grips the packaging bag A while performing intermittent rotation, and performs bag supply, bag port opening and filling, bag port sealing, printing and discharging. As possible, when the intermittent rotation is stopped, the packaging bag A is sequentially and continuously opposed to the bag supply unit 4, the filling unit 5, the seal unit 6, the printing unit 7 and the discharge unit 8, respectively. It is controlled to let you.

The rotation drive unit 16 includes a table drive motor 18 composed of an induction motor having a rotation axis along the horizontal direction, a pair of pulleys for transmitting the rotational movement of the table drive motor 18 via a drive belt, and a horizontal direction. A rotational direction conversion mechanism that converts the rotational motion into a rotational motion along the vertical direction.
The position detection unit 17 includes, for example, three position detection sensors 17a, 17a, and 17a arranged below the rotary table 15.

First chuck unit 14 ₁ of the lower surface of the rotary table 15, the second chuck unit 14 _2, the four positions corresponding to the positions of the third chuck unit 14 ₃ and the fourth chuck unit 14 _4, the position detecting sensor 17a, 17a , 17a, a reflection pattern composed of three light reflecting surfaces / non-light reflecting surfaces is formed.
The reflection pattern differs depending on the first chuck unit 14 ₁ , the second chuck unit 14 ₂ , the third chuck unit 14 _3, and the fourth chuck unit 14 ₄ (arrangement positions thereof). The reflection surface corresponds to each position detection sensor 17a.
Position detecting section 17 corresponds to a combination of the on / off position detection sensor 17a, the first chuck unit 14 _1, the arrangement position of the second chuck unit 14 _2, the third chuck unit 14 ₃ and the fourth chuck unit 14 ₄ A position specifying signal for specifying (position) is sent to the controller unit 12.

First chuck unit 14 _1, as shown in FIGS. 6 to 16, respectively pivoted to a predetermined around a pivot axis Xa _1, Xb _1, for unleashing grab the packaging bag A pair of left and right A pair of left and right holding bodies 28 ₁ , 29 ₁ for holding the chuck claws 26 ₁ , 27 ₁ and the chuck claws 26 ₁ , 27 ₁ in a state where they are housed in gaps 31 ₁ , 32 ₁ formed at the tips thereof; tip is attached via the chuck jaws ₂₆ 1, 27 1 ₁ of the rear end portion in the holding member _28, 29 elongated holes ₃₃ 1 formed in the _1, 34 displaceable movable shaft _Ya 1 in the _1, Yb ₁ the holding member ₂₈ 1, 29 through holes _35a 1 formed in the _1, 35b _1, 36a 1, 36b _1, by forward or backward relative to the packaging bag a, the chuck claws ₂₆ 1, 27 ₁ Open / close drive rod 3 for rotating a _1, and _{37b 1,} 38a 1, 38b _1, through the holding member ₂₈ 1, 29 _1, the holding member ₂₈ 1, 29 _1, on a horizontal plane perpendicular to the forward / backward direction to the packaging bag A Guide bars 39a ₁ , 39b ₁ , 41a ₁ , 41b ₁ for sliding along the sliding direction (along the outer surface of the packaging bag A), and guide bars 39a ₁ , 39b ₁ (41a ₁ , 41a ₁ , 41b ₁ ), which are fixed plates 42a ₁ , 42b ₁ (43a ₁ , 43b ₁ ) for fixing both ends, and a compression spring disposed between the holding body 28 ₁ (29 ₁ ) and the fixed plate 42b ₁ (43b ₁ ). When, the suction port 46p ₁ is formed at the tip, with an intake path for sucking the bag body is formed by a negative pressure generated by the vacuum pump therein, advanced or retracted relative to the packaging bag a By connecting The member ₄₄ 1, 45 ₁ both holders ₂₈ 1 through 29 ₁ closer or away from each other, an opening drive shaft portion 46 ₁ for adjusting the separation between the two chuck jaws ₂₆ 1, 27 ₁ tip, between the fixed plate _{42a 1,} 42b _1, 43a 1, 43 b ₁ and the mounting plate 47 ₁ opening drive shaft portion 46 ₁ is worn taken, the mounting plate 47 ₁ and the head portion 46a ₁ of the opening drive shaft portion 46 ₁ and a compression spring 48 ₁ disposed.
In FIG. 6 through FIG. 16, as an example, are illustrated the first chuck unit 14 ₁ configuration, the second chuck unit 14 _2, the third chuck unit 14 _3, a fourth chuck unit 14 _4, the 1 a chuck unit 14 ₁ and the same structure, it shall be distinguished by subscripts. That _indicates that 26 _2, 26 3, 26 _4, etc., it it, the second chuck unit 14 _2, the third chuck unit 14 _3, which is a component of the fourth chuck unit 14 _4.

Each holding body 28 ₁ (29 ₁ ) is packaged between the contact portions 26s ₁ and (27s ₁ ) of the chuck claws 26 ₁ and (27 ₁ ) that are in contact with the outer surface of the packaging bag A. Contact portions 28s ₁ and (29s ₁ ) for sandwiching the bag A are formed.
Each chuck claw 26 ₁ (27 ₁ ) is rotatably attached to a rotation axis Xa ₁ (Xb ₁ ) fixed to the holding plate 28 ₁ (29 ₁ ) via a torsion coil spring 49a ₁ (49b ₁ ). The chuck claws 26 ₁ , 27 ₁ are biased by the torsion coil springs 49a ₁ (49b ₁ ) so as to close each other.
In this example, even when no sandwiching the packaging bag A, so that both contact portions _{26s 1, 28s 1 (27s 1} , 29s 1) is in contact, is biased by torsion coil springs _{49a 1} (49b 1) ing.
As shown in FIG. 16, the chuck claw 26 ₁ (27 ₁ ) rotates around a rotation axis Xa ₁ (Xb ₁ ) within a predetermined angular range (approximately 25 ° in this example) θ _1. It is possible.

Further, compression springs 51a ₁ , 51b ₁ , 52a ₁ , 52b ₁ are arranged at the rear end portions (projecting portions from the mounting plate 47 ₁ ) of the opening / closing drive rods 37a ₁ , 37b ₁ , 38a ₁ , 38b _1. Yes. The compression springs 51a ₁ , 51b ₁ , 52a ₁ , 52b ₁ urge the open / close drive rods 37a ₁ , 37b ₁ , 38a ₁ , 38b ₁ in the retreating direction.
Also, disposed between the holding member ₂₈ 1 (29 ₁₎ and a compression spring disposed between the fixing plate _42b 1 (43 b _1), a mounting plate 47 ₁ and the head portion 46a ₁ of the opening drive shaft portion 46 ₁ by a compression spring 48 _1, which is, biased retainer ₂₈ 1, 29 ₁ to each other (i.e., the chuck claws ₂₆ 1, 27 ₁ to each other) to move away from one another orientation, and the orientation of the opening drive shaft portion 46 ₁ is advanced Has been.

By advancing against closing driving rod _{37a 1,} 37b _1, 38a 1, 38b ₁ of the packaging bag A, both the chuck jaws ₂₆ 1, 27 ₁ in the direction to be expanded to one another (so that the open state ) rotated, by retracting the opening and closing driving rod _{37a 1,} 37b _1, 38a 1, 38b _1, both the chuck jaws ₂₆ 1, 27 ₁ in the direction to be closed to each other (so that the closed state) is rotated.
By advancing the opening drive shaft portion 46 ₁ a packaging bag A, the connecting member ₄₄ 1, 45 ₁ by separating the two holding members ₂₈ 1, 29 ₁ through the chucks claws ₂₆ 1, 27 _As the distance between the tips of ₁ increases, the suction port 46p is pressed against the packaging bag A.

Further, by retracting against the opening drive shaft portion 46 ₁ packaging bag A, close together the connecting member ₄₄ 1, 45 ₁ both holders ₂₈ 1 through 29 _1, both the chuck jaws 26 ₁ , together with the shortened distance between the 27 ₁ tip, if the intake gas state, the suction port 46p pull the packaging bag a. As a result, the mouth of the packaging bag A is expanded.
Thus, the first chuck unit 14 ₁ in this example has both the bag gripping function by opening and closing of the chucks claws 26 _1, 27 _1, and expansion capabilities of the mouth of the packaging bag A .

The first chuck unit 14 _1, the lower portion of the mounting plate 47 _1, by being secured using fasteners such as bolts to the rotary table 15, is detachably attached.
The second chuck unit 14 _2, the third chuck unit 14 ₃ and the fourth chuck unit 14 ₄ is also designated as first chuck unit 14 ₁ same configuration and the same function (bag gripping function and mouth opening function) And is detachably attached to the rotary table 15.

For example, when the first chuck unit 14 ₁ is facing the bag supply unit 4, a pair of the chuck pawls 26 _1, 27 _1, for the closed state, the side actuation plate and the central portion actuating plate been advanced packaging Immediately before receiving the bag A, the opening / closing drive rods 37a ₁ , 37b ₁ , 38a ₁ , 38b ₁ are moved forward and opened, and immediately after the packaging bag A is pressed, the opening / closing drive rods 37a ₁ , 37b ₁ , 38a ₁ and 38b ₁ are retracted and closed.
Here, the opening drive shaft portion 46 ₁ is left forward drive state, the separation between the chuck claws ₂₆ 1, 27 ₁ is not narrowed.

Further, for example, the first chuck unit 14 _1, upon facing the filling unit 5, while the pair of the chuck pawls 26 _1, 27 ₁ is closed, i.e., while holding the packaging bag A, with suction unit of the filling unit 5, the opening drive shaft portion 46 ₁ while adsorbing the outer surface of the packaging bag a are retracted, spaced between the chuck claws 26 _1, 27 ₁ are narrowed, packaging bag a The mouth of is expanded.
Further, for example, the first chuck unit 14 _1, when facing the seal portion 6, while the chuck claws 26 _1, 27 ₁ is closed, i.e., while holding the packaging bag A, the opening drive shaft portion 46 ₁ is left forward drive state, the separation between the chuck claws 26 _1, 27 ₁ is not narrowed, in this state, is crimped by a crimping head from both sides.

Further, for example, ₁ first chuck unit 14, when facing the printing unit 7 and the discharge portion 8, at the time of printing, while the chuck claws 26 _1, 27 ₁ is closed, i.e., the packaging bag A in the gripping state, opening the drive shaft portion 46 ₁ is left forward drive state, the separation between the chuck claws 26 _1, 27 ₁ is not narrowed.
In addition, after the printing, at the time of discharging, the pair of chuck claws 26 ₁ , 27 ₁ is moved from the closed state to the open / close drive rods 37a ₁ , 37b ₁ , 38a ₁ , 38b ₁ and opened, and the packaging bag A Is opened and the packaged product is discharged.
Here, the opening drive shaft portion 46 ₁ is left forward drive state, the separation between the chuck claws ₂₆ 1, 27 ₁ is not narrowed.

Chuck drive unit 3 is, for example, when the first chuck unit 14 ₁ is facing the bag feeding portion 4, and the opening and closing driving rod _{37a 1,} 37b _1, 38a 1, 38b ₁ is moved forward and backward, the chuck claws 26 ₁ , a pawl for opening and closing actuator 61 for 27 ₁ to the open state and closed state, for example, the first chuck unit 14 _1, upon facing the filling unit 5, the pair of the chuck pawls ₂₆ 1, 27 ₁ remains closed, i.e., while holding the packaging bag a, with suction section of the filling unit 5, to retract the opening drive shaft portion 46 ₁ while adsorbing the outer surface of the packaging bag a, the chuck jaws 26 _1, and allowed to narrow the spacing between the 27 _1, the opening actuator 62 for causing expanding the mouth of the packaging bag a, for example, when the first chuck unit 14 ₁ is facing the discharge portion 8 Open / close drive rod 7a _1, the _{37b 1,} 38a 1, 38b ₁ is moved forward and backward, and the claw opening and closing actuator 63 for chucking claws ₂₆ 1, 27 ₁ and the open state and closed state, suspended state in the mount 64 It is attached and is roughly configured.
The claw opening / closing actuator 61, the opening actuator 62, and the claw opening / closing actuator 63 each have an air cylinder and a solenoid valve for introducing forward and backward air into the air cylinder. .

The bag supply unit 4 includes a bag storage unit that stores the packaging bag A, a bag transport unit that transports the packaging bag A, and the packaging bag A, for example, the first chuck unit 14 _1. And a bag body delivery section for delivery to the vehicle.
The bag transport unit includes an adsorption unit driving actuator 82a (82b) for sucking and removing the packaging bag A from the bag storage unit, a transport roller disposed to transport the packaging bag A, and It has a roller drive motor 84 and a feed motor 101 that rotate the feed roller, and a bag body detection sensor 105 that includes a light emitting element and a light receiving element and detects the passage of the packaging bag body A.
In addition, the bag body delivery section is a bag body for pushing out the packaging bag body A toward the first chuck unit 14 ₁ (second chuck unit 14 ₂ , third chuck unit 14 ₃ , fourth chuck unit 14 ₄ ). An extrusion actuator 116 is provided.

As shown in FIGS. 2 and 3, the filling unit 5 includes an adsorption unit 131 for adsorbing the outer surface of the packaging bag A and pulling it outward along a direction perpendicular to one outer surface. And a suction portion driving actuator 132 for moving the portion 131 forward or backward. The filling unit 5 is connected to a counting device 133 that counts and supplies the contents.
As shown in FIGS. 1 and 3, the seal unit 6 wraps a pair of crimping heads 135, 135 including a heater 134 that sandwiches the upper portions of both outer surfaces of the packaging bag A and thermocompression-bonds, and the crimping head 135. There are pressure-bonding head driving actuators 136 and 136 that move forward or backward with respect to the outer surface of the bag A, and a temperature sensor 137.

As shown in FIGS. 2 and 3, the printing unit 7 includes a printer 139 made of, for example, an ink jet printer, and a print having a backup plate 141 that presses the back side (the center side of the rotary table 15) of the packaging bag A. A unit 142, a backup drive actuator 143 that drives the backup plate 141, and a printer drive actuator 144 that drives the printer 139 are roughly configured.
Discharge portion 8, the chuck claws _{26 1,} 27 _{1 (26 2,} 27 _2, 26 3, 27 _3, 26 4, 27 ₄₎ is opened, the first chuck unit ₁₄ 1 1 (second chuck unit ₁₄ 2, A chute part 146 for dropping a product in which the packaging bag A is filled with contents, and a receiving part 147 for receiving the packaging bag A, separated from the third chuck unit 14 ₃ and the fourth chuck unit 14 ₄ ). And, for example, when an error occurs in the counting device 133, an NG sorting mechanism 148 for sorting and collecting the corresponding packaging bag A is provided.

In the suction mechanism 9, a tube constituting the intake path connected to the first chuck unit 14 ₁ (second chuck unit 14 ₂ , third chuck unit 14 ₃ , fourth chuck unit 14 ₄ ) is a rotary joint. The tube is twisted together with the rotation of the first chuck unit 14 ₁ (second chuck unit 14 ₂ , third chuck unit 14 ₃ , fourth chuck unit 14 ₄ ) by being connected to the vacuum pump side. There is no.

  As shown in FIG. 4, the controller unit 12 includes a main control unit 151 having a CPU (central processing unit) and the like, and a storage unit for storing processing programs executed by the main control unit 151, various data, and the like. 152, a solenoid valve control unit 153 that controls a solenoid valve constituting each actuator, a motor drive unit 154 for controlling and driving each motor, a heater control unit 155, a display / operation unit 156 having a touch panel, It is constituted by an information processing device such as a computer provided with an indicator lamp 157 for notifying the state of the device.

The main control unit 151 executes various processing programs stored in the storage unit 152, controls each component using various registers and flags secured in the storage unit 152, and performs electromagnetic valve control processing and motor drive control. Execute processing etc.
The main control unit 151 drives, for example, the claw opening / closing actuator 61, the opening actuator 62, the claw opening / closing actuator 63, and the like via the electromagnetic valve control unit 153 at a predetermined timing, and the chuck claws 26 ₁ , 27 are driven. ₁ (26 ₂ , 27 ₂ , 26 ₃ , 27 ₃ , 26 ₄ , 27 ₄ ) is driven to open and close or the mouth portion is expanded.

The main control unit 151 controls the table drive motor 18 via the motor drive unit 154, for example, to rotate the turntable 15 intermittently every 90 °.
The storage unit 152 includes an internal storage device and an external storage device. The storage unit 152 stores various processing programs such as a motor drive control processing program executed by the main control unit 151 and various setting information. And an information storage area for storing information.
The internal storage device includes a semiconductor memory such as a ROM or a RAM. The external storage device includes an FD driver to which an FD (flexible disk) is mounted, an HD driver to which an HD (hard disk) is mounted, an MO disk driver to which an MO (magneto-optical) disk is mounted, or a CD (compact disk). A disc / ROM driver, a CD-R (Recordable), a CD-RW (ReWritable), a DVD (Digital Video Disc) -ROM, a DVD-R, a DVD-RW and the like are mounted.

Next, the operation of the automatic packaging apparatus 1 of this example will be described with reference to FIG. 4 and FIGS.
First, in the bag supply unit 4, a large number (N (N: natural number)) of packaging bags A of a predetermined type are stored in advance in the bag storage unit.
When the power switch is turned on and activated, the main controller 151 starts the bag supply process (step SA1 (FIG. 17)).

The main control unit 151 controls the suction unit driving actuators 82a and 82b via the electromagnetic valve control unit 153 to take out the packaging bag A and transfer it to the conveyance path of the bag conveyance unit.
The main control unit 151 controls the roller drive motor 84 and the feed motor 101 via the motor drive unit 154, rotates the drive roller 86 and the feed roller 94, and conveys the packaging bag A, and the bag body. It is transferred to the delivery section.

Next, when the main control unit 151 receives the detection signal from the bag detection sensor 105, the main control unit 151 controls the bag extrusion actuator 116 via the electromagnetic valve control unit 153 to change the packaging bag A, for example, Push out toward 1 chuck unit 14 ₁ .
Here, the main controller 151 via a solenoid valve control unit 153 controls the claw opening and closing actuator 61 and allowed to open the chuck jaws ₂₆ 1, 27 _1.
A pair of chuck claws ₂₆ 1, 27 _1, immediately after pressed the packaging bag A, the opening and closing driving rod _{37a 1,} 37b _1, 38a 1, becomes a closed state 38b ₁ is retracted, packaging bag A Is gripped.

Next, the main control unit 151 rotates the table drive motor 18 via the motor drive unit 154 to rotate the rotary table 64 that has been stopped 90 degrees counterclockwise (step SE1). Accordingly, the first chuck unit 14 _1, faces the filling unit 5.
Next, the main control unit 151 starts a filling process (step SB1). That is, the main controller 151 via a solenoid valve control unit 153 controls the opening actuator 62 and the adsorption section drive actuator 132, as shown in FIGS. 18 and 19, the first chuck unit 14 ₁ of the pair while the chuck claws 26 _1, 27 ₁ is closed, i.e., while holding the packaging bag a, while adsorption of both outer surfaces of the packaging bag a, the opening drive shaft portion 46 ₁ and the suction portion 131 is retracted, by narrowing the spacing between the chuck claws 26 _1, 27 _1, press the packaging bag a from both sides, thereby expanding the mouth of the packaging bag a. In this state, the packaging bag A is filled with the contents.

Next, the main control unit 151 controls the opening actuator 62 and the suction unit driving actuator 132 via the electromagnetic valve control unit 153, and the pair of chuck claws 26 ₁ and 27 ₁ remain closed, that is, while gripping the packaging bag a, is advanced toward bag a f packaging the opening drive shaft portion 46 ₁ and the suction portion 131 while adsorbing the outer surface of the packaging bag a, the chuck claws 26 _1, to expand the spacing between the 27 _1, thereby closing the mouth of the packaging bag a to return to the original state.
The main controller 151, simultaneously with the filling process, in a state where the second chuck unit 14 ₂ is facing the bag feeding portion 4 executes the bag supply process (step SA2).

Next, the main control unit 151 rotates the table drive motor 18 via the motor drive unit 154 to rotate the stopped rotary table 90 ° counterclockwise (step SE2). Accordingly, the first chuck unit 14 _1, the seal portion 6, the second chuck unit 14 _2, facing the filling unit 5.
Next, the main controller 151 executes a sealing process (step SC1). That is, the main controller 151 via a solenoid valve control unit 153 controls the compression head driving actuator 136, 136, while the chuck claws ₂₆ 1, 27 ₁ is closed by a pair of compression head 135, 135 The upper portions of both outer surfaces of the packaging bag A are sandwiched and thermocompression bonded.

The main controller 151, at the same time as the sealing process, with the second chuck unit 14 ₂ is facing the filling section 5, executes the filling process (step SB2), and, third chuck unit in the sheet bag section 4 14 _The bag supply process is executed in a state where ₃ faces each other (step SA3).
Next, the main control unit 151 rotates the table drive motor 18 via the motor drive unit 154 to rotate the stopped rotary table 90 ° counterclockwise (step SE3). Thereby, the first chuck unit 14 ₁ is opposed to the printing unit 7 and the discharge portion 8, the second chuck unit 14 _2, to face the seal portion 6, the third chuck unit 14 _3, facing the filling unit 5 To do.

Next, the main control unit 151 executes a print / discharge process (step SD1). That is, the main control unit 151 controls the backup drive actuator 143 and the printer drive actuator 144 via the solenoid valve control unit 153 to drive the printer 139 and the backup plate 141, and the printer 139 causes the packaging bag body. A predetermined area on the outer surface of A is printed.
Next, the main control unit 151 controls the claw opening / closing actuator 61 via the electromagnetic valve control unit 153 to open and close the opening / closing drive rods 37a ₁ , 37b ₁ , 38a ₁ ,. the 38b ₁ is advanced, the chuck claws ₂₆ 1, 27 ₁ in the open state, to dissociate the packaging bag a from the chuck claws ₂₆ 1, 27 _1. As a result, the product filled with the contents in the packaging bag A passes through the chute 146, reaches the receiving part 147, and is collected.

The main controller 151, at the same time as the printing and ejection process, in a state where the second chuck unit 14 ₂ is opposed to the seal portion 6 performs a sealing process (Step SC2), third chuck unit 14 ₃ to the filling unit 5 There in a state of facing the, executes the filling process (step SB3), and, in a state where the fourth chuck unit 14 ₄ is facing the bag feeding portion 4 executes the bag supply process (step SA4).
Next, the main control unit 151 rotates the table drive motor 18 via the motor drive unit 154 to rotate the stopped rotary table by 90 ° counterclockwise (step SE4). Thereby, the first chuck unit 14 _1, facing the bag feeding portion 4, the second chuck unit 14 ₂ is opposed to the printing unit 7 and the discharge portion 8, the third chuck unit 14 _3, the seal portion 6 confronting, fourth chuck unit 14 _4, faces the filling unit 5.

The main control unit 151 repeatedly executes the above-described operation until the printing / discharge process (step SDN) to the last (Nth) packaging bag A is completed. Here, for example, until the bag supply process (step SAN) for the final (Nth) packaging bag A is completed, the bag supply unit 4, the filling unit 5, the seal unit 6, and the printing unit 7 and Processing is performed simultaneously and continuously at four locations of the discharge unit 8.
Note that the main control unit 151 temporarily stops the operation when, for example, bag detection is not performed or when an error occurs.

According to the configuration of this example, not only the packaging bag body A is adsorbed and pulled on both sides of the outer surface, but the both sides of the opening of the packaging bag body A are pressed to reduce the width, Since suction is performed, the mouth portion of the packaging bag A can be easily and reliably expanded with a relatively small adsorption force.
In addition, the chuck unit has both a bag body gripping function and a bag body opening function, so that a single type of chuck unit can be used to receive the supplied packaging bag A and A series of steps from filling and sealing to printing and discharging can be performed. Therefore, it is possible to reduce the types of parts constituting the apparatus, and to reduce the cost. Further, maintenance work including inspection and replacement can be easily performed.
Further, the chuck unit is attached using a fixing tool such as a bolt and a nut, and can be easily and quickly attached and detached. Therefore, by using the chuck unit adjusted for each bag body, a packaging bag can be used. It is possible to easily cope with a variety of bodies A, that is, a variety of bags.

In addition, by rotating a turntable to which a plurality of chuck units are attached, a series of processes from receiving the supplied packaging bag A to filling and sealing the contents, to printing and discharging are performed. Can do. Therefore, it is not necessary to perform work while transporting on the belt conveyor, which can contribute to space saving.
Moreover, since the work is performed independently at each station by the rotational transfer of the packaging bag A, the manufacturing tact can be shortened and the productivity can be improved.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. Are also included in the present invention.
For example, in the above-described embodiment, the case where air is used as a power source in the actuator has been described. However, the present invention is not limited to this, and fluid pressure can be generally used. For example, a hydraulic cylinder is used instead of the air cylinder. May be. Further, the horizontal driving by the actuator may be performed by a motor through a timing belt, or may be driven by using a ball screw.

Moreover, you may make it mount a compressor (air compressor) as an air supply source.
The chuck unit may be made of a metal such as stainless steel, or may be a resin molded product such as engineering plastics.

Further, the number of stations is not necessarily limited to four, and for example, a separate printing station may be provided, or a cooling station may be added. Further, the opening station and the filling station may be provided separately. Moreover, it is good also as 3 places by dropping and discharging at this position after sealing. Further, the printing unit may be omitted. Along with this, the number of chuck units attached to the rotary table may be increased or decreased.
A plurality of pairs of chuck claws may be provided along the vertical direction.

As a biasing means, a torsion coil spring or a leaf spring may be used. For example, a simple torsion spring may be used instead of a coil spring. For example, both chuck claws are pulled in a closing direction by a tension spring. You may comprise as follows.
Further, the pair of chuck claws may be biased in a direction in which the pair of chuck claws are expanded.

Further, an input device using a light pen may be used instead of the touch panel in the display / operation unit.
Further, the size of the bag may be set in advance by the display / operation unit, or may be detected by the bag storage unit or the like, and the width adjustment or the height adjustment may be automatically performed.

  The actuator can be applied when using a motor in addition to an air cylinder.

It is a front view which shows the structure of the automatic packaging apparatus which is one Example of this invention. It is a side view which shows the structure of the automatic packaging apparatus. It is a top view which shows the structure of the automatic packaging apparatus. It is a block diagram which shows the electrical structure of the automatic packaging apparatus. It is a top view which shows the structure of the rotation transfer part of the automatic packaging apparatus. It is a top view which shows the structure of the chuck | zipper unit of the rotation transfer part. It is a top view which shows the structure of the chuck | zipper unit of the rotation transfer part. It is a top view which shows the structure of the chuck | zipper unit of the rotation transfer part. It is a top view which shows the structure of the chuck | zipper unit of the rotation transfer part. It is sectional drawing which shows the structure of the same chuck unit. It is sectional drawing along the AA line of FIG. It is sectional drawing along the AA line of FIG. It is sectional drawing along the AA line of FIG. It is sectional drawing along the BB line of FIG. It is sectional drawing along CC line of FIG. It is a top view which shows the structure of the chuck nail | claw of the same chuck unit. It is a flowchart for demonstrating operation | movement of the automatic packaging apparatus. It is explanatory drawing for demonstrating the function of the chuck | zipper unit, and operation | movement of the filling part of the automatic packaging apparatus. It is explanatory drawing for demonstrating the function of the chuck | zipper unit and operation | movement of the filling part of the automatic packaging apparatus. It is explanatory drawing for demonstrating the function in the chuck | zipper unit, and the operation | movement in the discharge part of the automatic packaging apparatus. It is explanatory drawing for demonstrating the function in the chuck | zipper unit, and the operation | movement in the discharge part of the automatic packaging apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Automatic packaging apparatus 2 Rotation transfer part 3 Chuck drive part 4 Bag supply part (bag body supply apparatus)
5 Filling section 6 Sealing section 7 Printing section 8 Discharging section 12 Controller section 14 ₁ First chuck unit (chuck unit)
14 ₂ Second chuck unit (chuck unit)
14 ₃ 3rd chuck unit (chuck unit)
14 ₄ 4th chuck unit (chuck unit)
15 rotary table 26 ₁ , 27 ₁ , 26 ₂ , 27 ₂ , 26 ₃ , 27 ₃ , 26 ₄ , ₂ 74 chuck claw (part of gripping means)
26s ₁ , 27s ₁ contact part (first pressing part)
28 _{1, 29 1,} 28 _{2, 29 2,} 28 3, 29 _3, 28 4, 29 ₄ holder (part of the gripping means, the chuck pawl holder)
28s ₁ , 29s ₁ contact part (second pressing part)
_{37a 1, 37b 1, 38a 1} , 38b 1, 37a 2, 37b 2, 38a 2, 38b 2, 37a 3, 37b 3, 38a 3, 38b 3, 37a 4, 37b 4, 38a 4, 38b 4 closing drive rod (Gripping operation mechanism, rotation operation member)
44 _1, 45 ₂ connecting members 46 _{1, 46 2,} 46 3, 46 ₄ shedding drive shaft portion (mouth spreader mechanism, attracting member)
49a ₁ , 49b ₁ torsion coil spring (biasing means)
66 Bag body storage section 67 Bag body transport section 68 Bag body delivery section 73 Bag body stocker 77 Bag body take-out section 78 Upper transport section 79 Lower transport section 82a, 82b Adsorption section drive actuator 86 Drive roller 89 Pressing roller 94 Feed roller 95 Pinch roller 116 Bag body extrusion actuator A Packaging bag body

Claims (6)

The wrapping bag body is driven by being detachably mounted on the automatic wrapping apparatus, grabbing the wrapping bag body one by one from the bundle, expanding the mouth of the wrapping bag body, A chuck unit that is responsible for a series of steps for filling the contents from the mouth, sealing the mouth of the packaging bag, and completing the packaging of the contents,
A pair of gripping means for gripping the packaging bag body from both sides, and a mouth opening mechanism for expanding the mouth of the packaging bag body,
The mouth opening mechanism is provided with an attracting member for attracting the outer surface of the packaging bag body at an end thereof, and an attracting member for attracting the packaging bag body in which an intake passage is formed; A pair of connecting members for connecting the attracting member and the pair of gripping means, and retracting the attracting member with respect to the packaging bag body to draw the packaging bag body A chuck unit, wherein a mouth of the packaging bag body is widened by pushing from both sides while the packaging bag body is gripped by the pair of gripping means via the pair of connecting members.   The gripping means is provided with a first pressing portion at a tip, and holds a chuck claw that can rotate around a predetermined rotation axis, and the chuck claw that can rotate about the rotation axis. And a chuck claw holding body provided with a second pressing portion at the tip, and the outer surfaces of the packaging bag body are formed by the pair of the first pressing portion and the second pressing portion. The chuck unit according to claim 1, wherein the chuck unit is pressed and sandwiched. A gripping operation mechanism for displacing a rear end portion of the chuck claw by a rotation operation member, rotating the chuck claw around the rotation axis, and gripping or releasing the packaging bag body; The chuck unit according to claim 2, wherein the attracting member of the mouth widening mechanism is coupled to the pair of chuck claw holders via the pair of connecting members.   4. The gripping means includes biasing means for biasing the chuck claw in a direction in which the first pressing portion and the second pressing portion approach each other. The described chuck unit.   The chuck unit according to any one of claims 1 to 4, wherein the chuck unit is configured to be detachably attached to a rotary table that constitutes the automatic packaging device and transports the packaging bag body. After grabbing the packaging bag one by one from the bundle of packaging bags, opening the mouth of the packaging bag and filling the contents from the mouth of the packaging bag, the packaging bag An automatic packaging device that seals the mouth of the body and completes the packaging of the contents,
The chuck unit according to any one of claims 1 to 5, wherein the chuck unit is detachably attached to a rotary table that performs intermittent rotational movement, and the packaging bag body is gripped and transferred by the chuck unit. Features automatic packaging equipment.

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