JP2000238721A - Packaging method for binding mouth of bag with tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve packaging operation efficiency by fully automating a series of processes of grasping the mouth portion of a packaging bag, opening the mouth of the bag and filling contents into it, firmly twisting the mouth portion of the bag after that, and tying the twisted portion by the attachment of a tape thereto. SOLUTION: While both right and left side edges of a packaging bag supplied in a bag-feeding process (i) is kept gripped with grips, the packaging bag is transferred to an opening process (ii), and in a filling process (iii), contents are filled into the packaging bag opened in that process. At the time, in vibrating processes (iv) and (v), the bottom of the packaging bag is vibrated to make the filled contents even. Thereafter, the bag is transferred to a take-out process (vi). Here with the mouth portion of the bag grasped and gathered to the middle by means of a widthwise gathering clamp, the drawn mouth portion of the bag is grasped with a middle clamp. Then, with the mouth portion of the bag kept grasped, swing arm is turned and moved to a bundling process (vii), and the bundled portion is firmly twisted by rotating a rotary clamp. Subsequently, the twisted portion of the packaging bag is tied with a tape in a tying process (viii).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging method in which contents such as vegetables and fruits are filled in a packaging bag, and the opening of the bag is bound with a tape.

[0002]

2. Description of the Related Art In general, vegetables and fruits are packaged by binding the mouth of a packaging bag filled with a predetermined amount with an adhesive tape. Regarding a packaging method or a packaging apparatus applied to this type of article, see, for example, JP-A-8-32
It is disclosed in Japanese Patent Publication No. 4503 and Japanese Patent Application Laid-Open No. 9-2411. The bag mouth processing apparatus in the bag packing machine described in the former publication, before binding the mouth of the packaging bag to which the article is supplied by the tape, twists the mouth by pulling the mouth and twisting the accommodation portion of the packaging bag. The tension is appropriate. Further, the bag filling and packaging apparatus described in the latter publication is a station for supplying bags taken out one by one from a bag supply magazine to a first bag transfer device, a station for filling an opened bag with an article, and an article filled therein. A station for temporarily holding the bag, a station for twisting the mouth of the bag and cutting the excess portion of the tape and the mouth are linearly arranged from the upstream side to the downstream side in the bag transfer direction. ing.

[0003]

In each of the above-mentioned conventional packaging methods and packaging apparatuses, the steps from supply of packaging bags, filling of articles, bundling of tape at the mouth, and discharging of packaging bags are linearly arranged. Configuration. However, a plurality of sets of grips are projected on the intermittent rotating disk in a radial direction, and the packaging bags supplied from the bag supply device are gripped by the grips, and the packaging bags are opened, filled, heat sealed at the bag mouth, and packaged. In a rotary type packaging machine configured to transfer to each process such as bag discharge, a packaging method or a packaging device in which a bag mouth is bound by tape instead of heat sealing the bag mouth has not been developed. For this reason, there has been a demand for a packaging method for binding tapes even in this type of packaging machine.

SUMMARY OF THE INVENTION An object of the present invention is to provide a packaging method capable of carrying out packaging with good binding of a bag mouth using a rotary type packaging machine having a small and simple structure. It is in.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, the left and right side edges of the packaging bag supplied with the bag opening upward in the bag supplying step (i) are separated from each other. Opening step (ii), filling step (iii), vibration step (i
v), (v) and the unloading step (vi) using a packaging machine that is installed so as to intermittently stop in order, and filling the packaging bag opened in the opening step (ii) in the filling step (iii) In the vibrating steps (iv) and (v), the bottom of the packaging bag is vibrated with a shaking table to level the filled contents, and in the unloading step (vi), the same as the center clamp is used. The first swing arm provided with the width shifting clamps disposed on both sides of the clamp is swiveled on the intermittently stopped packaging bag, and the bag opening portion is grasped by the width shifting clamp and moved toward the center. Grasp the bag mouth portion contracted by the central clamp, and then, while holding the bag mouth portion, pivotally move the first swing arm to the next convergence step (vii), and raise the bag mouth portion slightly upward. In the convergence step (vii), the convergence portion of the packaging bag narrowed by the guide member during the movement is maintained. After being gripped by the clamp, the center clamp is released and the first swing arm is pivoted to the take-out step, and in synchronization with this, a twisting device is provided which makes the rotary clamp rotatable by the motor driving device. (2) After pivoting the swing arm from the rear binding end position (ix) to the forward convergence step (vii), grasp the bag opening portion with the rotating clamp of the twisting device, and release the holding clamp. At the same time, the rotating clamp is rotated to bring the converging portion into a tightly twisted state, and while the packaging bag in this state is swiveled by the second swing arm, the second swinging is performed in the tape binding step (viii). A tape is stuck to the constricted portion of the twisted packaging bag by a tape sticking device provided in the moving path of the moving arm, and bundling is performed,
Then, the packaging bag is placed at the binding end position of the second swing arm.
(ix), and after releasing the rotation clamp of the twisting device, the packaging bag is discharged.

According to a second aspect of the present invention, in the packaging method for binding a bag mouth with a tape according to the first aspect, in the tape binding step (viii), the lower portion of the constricted portion of the packaging bag is moved by an arm of a pressing device. It is characterized in that binding is performed by pushing from behind.

[0007] The invention according to claim 3 is the invention according to claim 1 or 2.
In the packaging method of performing the tape bundling of the bag mouth according to the, between the tape bundling step (viii) and the bundling end position (ix),
The upper part of the tape binding portion of the packaging bag is cut by a cutter provided in the movement path of the second swing arm.

[0008]

In the packaging method of the present invention,
Opening step (ii), filling step (iii), vibrating step (iv), (v) by holding the left and right side edges of the packaging bag with each grip pair and opening the packaging bag
And a rotary type packaging machine provided so as to intermittently stop in order in each step of the removal step (vi). In this packaging machine, the packaging bag supplied with the bag mouth upward in the bag supply step (i) is opened by reducing the distance between the grip pairs in the opening step (ii), and the packaging bag is suspended with the bag mouth upward. The contents such as vegetables and fruits are filled in the packaging bag in a predetermined amount in the filling step (iii), and the bottom of the packaging bag is vertically or horizontally moved by the vibration table in the vibration steps (iv) and (v). The filled contents are leveled by vibrating. In the next unloading step (vi), the first swing arm provided with the center clamp and the width-shifting clamps arranged on both sides of the clamp is swiveled on the intermittently stopped packaging bag, and is moved by the width-shifting clamp. With the bag mouth portion grasped and brought to the center, the bag mouth portion contracted by the central clamp is grasped. Then, the first swing arm is pivotally moved to the next convergence step (vii) with the packaging bag being gripped by the bag mouth portion, and the bag mouth portion is lifted slightly upward to fill the package with the contents. Tension the bag vertically.

In the convergence step (vii), when the first swing arm is swiveled, the widened portion of the upper part of the packaging bag is gradually squeezed by the guide member, and the squeezed convergence portion is gripped by the holding clamp. Later, the center clamp is opened and the first
The swing arm again pivots to the removal step (vi). In synchronization with the movement of the first swing arm, the second swing arm provided with the twisting device is pivotally moved from the rear binding end position (ix) to the forward convergence step (vii). The bag mouth portion is gripped by the rotating clamp of the twisting device, and the holding clamp is released. Almost at the same time, the rotating clamp is rotated by the motor driving device to bring the converging portion of the packaging bag into a tightly twisted state, and while the packaging bag in that state is pivoted by the second pivot arm, the second pivot The tape is attached to the constricted portion of the twisted packaging bag by the tape attaching device in the tape binding step (viii) provided in the movement path of the arm (the locus of the center of the rotary clamp). Will be applied.

At this time, the lower portion of the constricted portion of the packaging bag (the lower portion of the binding portion) is pushed from behind by the arm of the pressing device to assist the portion containing the contents not to be delayed from the movement of the upper bag opening portion. This allows the tape to be smoothly bound (claim 2).

[0011] Next, the packaging bag whose bag mouth is bound is a second package.
After being moved to the binding end position (ix) of the swing arm, it is discharged by releasing the rotating clamp of the twisting device.

In this packaging method, if the upper part of the packaging bag from the tape binding point is not required, the upper part of the tape binding point may be cut by a cutter provided in the movement path of the second swing arm. (Claim 3).

[0013] The packaging method for binding the tape of the bag mouth is as follows.
By using a packaging machine having a small and simple configuration, good packaging of various contents can be performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a packaging machine to which a packaging method of the present invention for binding a tape at a bag mouth will be described with reference to the drawings. 1 is a schematic plan view of the packaging machine, FIG. 2 is a plan view of an unloading process, FIG. 3 is a front view showing a state in which the width-adjusting clamp and the center clamp are released, and FIG. FIG. 5 is a front view showing a state in which the bag mouth portion is grasped by the width-adjusting clamp and brought to the center, and then the bag mouth portion contracted by the center clamp is grasped. FIG. 6 is a convergence process in which the twisting device is omitted. 7, FIG. 7 is a front view of the convergence process, FIG. 8 is a plan view of the holding clamp, FIG. 9 is a front view of the twisting device, FIG. 10 is a plan view of the binding process, and FIG. FIG. 12, FIG. 12 is a plan view of the pressing device, FIG. 13 is a side view of a supporting portion of the first swing arm, FIG. 14 is an explanatory diagram of a cam mechanism, and FIG. is there.

In FIG. 1, reference numeral A denotes a general rotary type packaging machine to which a packaging method for bundling tape at a bag mouth is applied. In the packaging machine A, the left and right side edges c of the packaging bag a supplied in the bag supplying step (i) with the bag opening b facing upward project radially from the rotation center of the rotating plate at equal intervals. The packaging bag a, which is grasped sequentially by the grip pair g and is in a hung state, is opened (ii), filled (iii), vibrated (iv),
The system is configured so that the six steps of (v) and the removal step (vi) are intermittently stopped in order. B is a binding device of the packaging machine A which includes a convergence step (vii) and a tape binding step (viii) following the removal step (vi).

In the binding device B, a reciprocating swinging movement between a take-out step (vi) and a convergence step (vii) is performed around a longitudinal axis 3 rotatably supported by a column 2 erected on a machine base 1. The first swing arm 4 and the ending step (ix) passing through the convergence step (vii) and the tape bundling step (viii) at the intermediate position around the longitudinal axis 33, which is also rotatably supported by the column 32, And a second swing arm 34 that reciprocates between the grips g is controlled by a control mechanism (not shown) of the packaging machine A in synchronization with the operation of the grip pair g.

"Removal step (vi)" As shown in FIGS. 2 and 3, the tip of the first swing arm 4 is provided with a center clamp 5 and a set of width shifting clamps arranged on both sides of the clamp 5. 8 and 8 are provided. The central clamp 5 is provided with clamp pieces 7, 7 disposed below by a pneumatic cylinder 6 vertically mounted on the lower surface of the first swing arm 4 so as to be freely opened and closed. The width-adjusting clamp 8 supports a central portion of a substantially Y-shaped movable plate 10, 11 on a forked bracket 9 provided on the back surface of the pneumatic cylinder 6 with shafts 12, 13, respectively. Projection piece 1 located inside of 10 and 11
0 a and 11 a are provided so as to be connected to each other by a link 14. The central piece 10b of the movable plate 10 near the vertical axis 3
As shown in FIG. 4, the horizontal piece 10c protruding from the lower part
Rotation shafts 15 and 16 are provided at regular intervals in the horizontal direction, and clamp pieces 17 and 18 are respectively attached to one shaft end protruding from the horizontal piece 10c to the pneumatic cylinder 6 side. The gears 19 and 20 fixed to each other are provided so as to mesh with each other. A lever 21 is attached to the rotating shaft 15 on one gear 19 side, and a rod tip 23 of a pneumatic cylinder 22 attached to the arm piece 10d of the movable plate 10 with the rod facing downward is free of the lever 21. Connect to the end. The other movable plate 11 is also provided with a width-adjusting clamp 8 having the same configuration as the width-adjusting clamp 8 provided on the movable plate 10, but the description thereof is omitted.

At the free end of the arm 10d of the movable plate 10, a cam follower 25 having a support shaft 25a oriented sideways is mounted. Reference numeral 26 denotes a horizontal rod provided so as to extend laterally from the support column 2, and a cam plate 28 having an inclined cam 29 is provided at an upper end 27 thereof. When the first swing arm 4 moves from the convergence step (vii) to the position of the removal step (vi), the cam follower 25 moves the cam 29.
And the center piece 10 of the both width shifting clamps 8
As shown in FIG. 3, b and 11b are provided so as to jump outward with the shafts 12 and 13 as fulcrums, respectively. When the first swing arm 4 moves from the position of the removal process (vi) toward the convergence process (vii), the cam follower 25 separates from the cam surface 28, and the central piece 10b,
As shown in FIG. 5, 11b is provided so as to be in a vertical state approaching each other from the jumped state.

"Converging Step (vii)" As shown in FIGS. 7 and 8, in the converging step (vii), a guide member 50 (5
2) The holding clamp 35 for holding the converging portion d of the packaging bag a narrowed by 63 (56) is provided. A support plate 37 is horizontally mounted on a horizontal rod 36 fixed across the two columns 2, 32, and a large gear 38 having a lever 39 mounted on the support plate 37 is rotatably provided. The rod tip 41 of the pneumatic cylinder 40 attached to the lever 39 is connected to the lever 39. As shown in FIG. 8, a small gear 42 meshing with the large gear 38 and a small gear 43 meshing with the small gear 42 are rotatably provided on the support plate 37. Clamp pieces 44, 45
Are provided respectively. 46, 47 are each clamp piece 4
4 and 45 are rubber pieces attached inside the tips. Thus, the operation of the pneumatic cylinder 40 constitutes the holding clamp 35 in which the clamp pieces 44 and 45 are freely opened and closed.

As shown in FIGS. 6 and 7, reference numeral 50 denotes a moving path (trajectory of the center of the center clamp) x of the first swing arm 4 and a moving path (trajectory of the center of the center of the rotary clamp) of the second swing arm 34. 2) two chevron shaped guide edges 5 provided inside y
1 is a guide member. The guide member 50 is attached to the support plate 37 so as to cover the upper surface of the holding clamp 35. Reference numeral 52 denotes a guide member provided on the lower surface of the holding clamp 35, and a guide edge 53 having the same shape as that of the guide member 50 is formed.

A bracket 55 is attached to a stand 54 erected on the machine base 1, and a support piece 58 provided with a guide member 56 having a chevron-shaped guide edge 57 is rotatably provided.
The support piece 58 is urged clockwise by a spring 59, and is provided so that a protrusion 60 formed integrally with the support piece 58 abuts on a stopper 61 to maintain a proper position. . A proximity switch 62 is provided at a position corresponding to the tip of the protruding piece 60. A guide member 63 having a chevron-shaped guide edge 64 is provided on the upper surface of the guide member 56. The guide edges 57 and 64 are connected to the guide member 5.
The guide edges 0 and 52 are arranged so as to correspond to the respective guide edges 51 and 53 at a predetermined interval w. Then, packaging bag a
When the portion to be converged when passing through the guide members 50 (52) and 63 (56) cannot be fully drawn within the size of the distance w, the support piece 58 rotates counterclockwise. Then, the proximity switch 62 is turned on to perform control such as stopping the gripping operation of the holding clamp 35.

The second swing arm 34 is provided with a twisting device 70 for making the converging portion d of the packaging bag a tightly twisted. As shown in FIG. 9, the distal end 3 of the second swing arm 34
4a, a vertical main shaft 71 is rotatably provided.
Attach a pulley 72 to the upper end of 1. 73 is the support 32
This is a motor drive device in which a drive shaft 73a is attached downward to a bracket 74 fixed to the bracket 74. A pulley 75 is attached to the drive shaft 73a, and an endless belt 76 is bridged between the pulley 75 and the pulley 72. 77 is the main shaft 7
1 is a rotary clamp attached to the lower flange 77a of the first, and the rotary clamp 77 is a clamp piece 7 disposed below by a pneumatic cylinder 78 attached vertically.
9 and 79 are freely opened and closed. Thus, the torsion device 70 in which the rotary clamp 77 is rotatable by the motor driving device 73 is configured.

"Tape binding step (viii)" FIGS. 10 and 11
As shown in (5), in the tape bundling step (viii), there is provided a tape sticking device 85 for sticking the tape 92a to the constricted portion e of the packaging bag a and binding them. The tape sticking device 85 is provided with support plates 88 and 89 opposite to each other with a movement path y of the second swing arm 34 interposed therebetween at a vertical position of a horizontal piece 87 of a bracket 86 attached to the horizontal rod 36. In the support plate 88, a star wheel 90 is rotatably provided so that a part of the outer periphery faces the movement path y, and the tape 92a of the winding tape 92 mounted in the insertion groove 91 is turned upside down with the adhesive surface. It is wound around the star wheel 90, and the spring 9 is
The outer peripheral surface of the star wheel 90 is resiliently pressed by a pressing piece 93 urged by 4 and provided to be swingable. On the side of the binding end position (ix) near the star wheel 90, the collision portion 95a is always urged by the spring 96 so that the collision portion 95a faces the movement path y, and the knife 97 is attached to a position deviated from the movement path y. The knife piece 95 is freely rotatable. Thus, the packaging bag "a" is
The tape 92a is wound around the constricted portion e by the tape adhering device 85 to be bound while moving along the movement path y while twisting is applied. Reference numeral 98 denotes a detection sensor attached to the support plate 88 for detecting the presence or absence of the tape 92a of the winding tape 92.

The cutter 100 shown in FIG. 10 is for cutting the upper portion f of the packaging bag a shown in FIG. The cutter 100 includes a cutter plate 101 having a cutter 102 attached to one end thereof and a horizontal piece 87 of the bracket 86.
The cutter plate 101 is rotatably supported, and is provided so as to fasten and fix the cutter plate 101 through the shaft portion of the handle 103 in an arc groove 101 a formed at the other end of the cutter plate 101.

Reference numeral 105 denotes a bag opening in which the lower portion of the constricted portion e of the packaging bag a (the lower portion of the binding portion) is pushed from behind, and the portion containing the contents is suspended by the twisting device 70 of the second swing arm 34. This is a pressing device for assisting the moving operation of the part b so as not to be delayed. The pressing device 105 includes a support rod 106 projecting from the lower surface of the support plate 37 and an arm 107.
Is provided so as to be freely rotatable by a shaft 108, and is connected to a lever 109 fixed to a lower end portion of the shaft 108 to connect a rod tip portion 111 of a pneumatic cylinder 110 attached to the support plate 37.

As shown in FIG. 13, a cam mechanism 115 is provided on the supporting portion of the first swing arm 4 for slightly raising the bag mouth portion of the packaging bag a when the arm 4 pivots.
Is provided. The cam mechanism 115 includes a cam plate 117
Is fixed to the horizontal rod 26 provided on the support column 2, and the mounting plate 116 is provided so as to be swingable on the horizontal shaft 118, as shown in FIG.
The cam plate 1 is attached to the adjustment shaft 119 attached to the attachment plate 116.
17 are provided so as to screw the piece pieces 120 provided therein. Then, a cam follower 122 is attached laterally to a support piece 121 projecting from the lower surface of the first swing arm 4,
The cam follower 122 is provided so as to always ride on the flat cam 117a of the cam plate piece 117. Then
By appropriately adjusting the inclination angle of the cam 117a with the adjusting shaft 119, a cam mechanism 115 capable of adjusting the amount of vertical movement of the first swing arm 4 is configured.

Although the inclination angle of the cam 117a is adjusted manually by adjusting the adjusting shaft 119, the inclination angle may be automatically adjusted by using a motor device or a pneumatic cylinder.

As shown in FIG. 7, a conveyor device 130 having a conveying surface slightly below the bottom of the packaging bag a is provided between the unloading step (vi) and the binding end position (ix). I have. The conveyor device 130 includes a motor device 131
Endless belt 1 stretched over a pair of rollers 132
33 is provided in a known manner, and the height thereof can be adjusted according to the size of the packaging bag a by a screw mechanism (not shown).

Next, a description will be given of a series of operations of the above-described packaging machine A for performing the packaging method for binding the tape at the bag mouth. In the packaging machine A, the packaging bag a supplied with the bag mouth b turned up in the bag feeding step (i) is opened in the opening step (ii) with the distance between the grips g pair reduced, and the bag mouth b is turned up. The contents such as vegetables and fruits are filled in a predetermined amount in the filling step (iii) into the hanging packaging bag a, and the bottom of the packaging bag a is shaken in the vibration steps (iv) and (v). Is applied to level the contents by vibrating vertically or laterally.

In the next unloading step (vi), the first swing arm 4 of the binding device B is swiveled on the intermittently stopped packaging bag a, and the set of clamp pieces 17 of the pair of width shifting clamps 8,
With the bag mouth portion gripped by 18 and brought to the center, the bag mouth portion contracted by the clamp pieces 7 of the central clamp 5 is gripped. Then, the first swing arm 4 is moved to the next convergence step (vi) while the packaging bag a is gripped by the central clamp 5.
Turn to i). At this time, since the first swing arm 4 is slightly moved upward by the cam mechanism 115, the bag mouth portion is pulled up slightly upward, and the packaging bag a is tensioned in the vertical direction.

In the convergence step (vii), the widened portion at the top of the packaging bag a when the first swing arm 4 is pivoted is gradually narrowed by the guide members 50 (52) and 63 (56). After grasping the converged converging portion d with the clamp pieces 44 and 45 of the holding clamp 35, the clamp pieces 7 and 7 of the center clamp 5 are opened to release the bag mouth portion, and the first swing arm 4 is again moved. The turning movement is performed to the removal step (vi). In synchronization with the movement of the first swing arm 4, the second swing arm 34
But from the rear binding end position (ix) to the forward convergence step (vii)
Then, the bag mouth portion is gripped by the rotary clamp 77 of the twisting device 70, and the clamp pieces 44 and 45 of the holding clamp 35 are opened.

At substantially the same time, the rotating clamp 77 is rotated an appropriate number of times by the drive of the motor driving device 73, and the converging portion d of the packaging bag a is in a tightly twisted state. While rotating the twisted packaging bag a by the second swing arm 34, the star wheel 90 and the holding piece 93 of the tape sticking device 85 provided in the movement path y of the arm 34.
, The twisted constricted portion e
Is affixed to the tape 92a. Then, the constricted portion e pushes the collision portion 95a of the knife piece 95,
The subsequent tape 92a is cut by the knife 97 to complete the binding.

At the time of the binding, the lower portion of the binding portion of the packaging bag a is pushed from behind by the arm 107 of the pressing device 105, so that the lower portion containing the contents is not delayed from the movement of the upper bag opening portion. As a result, the tape bundling and cutting operations are performed more smoothly.

When the upper part of the packaging bag a from the tape binding position is not required, the cutter 100 is set in the movement path y of the second swing arm 34 as shown in FIG. The position shown by the chain line in FIG.

Next, the packaging bag a having the bag mouth b bound by the tape 92a is positioned at the binding end position of the second swing arm 34.
(ix) and then the clamp piece 7 of the rotary clamp 77
With the release of 9, 79, it falls on the endless belt 133 of the conveyor device 130 and is discharged out of the machine by the conveyor device 130.

According to the packaging method of binding the bag mouth with the tape, it is possible to satisfactorily package various contents by using the small packaging machine described above.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a packaging machine.

FIG. 2 is a plan view of an extraction process.

FIG. 3 is a front view showing a state in which a width shifting clamp and a center clamp are released.

FIG. 4 is a side view of a main part in the state shown in FIG. 3;

FIG. 5 is a front view showing a state in which the bag mouth portion is grasped by the width-adjusting clamp and is brought to the center, and the bag mouth portion contracted by the center clamp is grasped;

FIG. 6 is a plan view of a convergence step without a twisting device.

FIG. 7 is a front view of the convergence step.

FIG. 8 is a plan view of a holding clamp.

FIG. 9 is a front view of the twisting device.

FIG. 10 is a plan view of a binding step.

FIG. 11 is a side view of a main part.

FIG. 12 is a plan view of a pressing device.

FIG. 13 is a side view of a support portion of the first swing arm.

FIG. 14 is an explanatory view of a cam mechanism.

FIG. 15 is an explanatory view of a bag mouth portion where a tape is bound.

[Explanation of symbols]

A → Packaging machine B → Converging device a → Packaging bag b → Bag mouth c
→ Side edge d → Convergent part e → Constricted part (i) → Bag supply process (ii) → Opening process (iii) → Filling process (i
v), (v) → vibration process (vi) → extraction process (vii) → convergence process (viii) → tape binding process (ix) → binding end position 3 → vertical axis 4 → first swing arm x → first Movement path of the swing arm 33 → vertical axis 34 → second swing arm y → movement path of the second swing arm 5 → center clamp 8, 8 → width adjustment clamp 35 → holding clamp 70 →
Twisting device 73 → Motor driving device 50 (52), 63 (56) → Guide member 77 → Rotation clamp 85 → Tape sticking device 92 → Wound tape 92a → Tape 100 → Cutter 102 → Cutter blade 105 → Pressing device 107 → arm

Claims (3)

[Claims] In the bag supply step (i), the opening and closing step (ii), the filling step (iii), and the vibration step (i) are performed by grasping the left and right side edges of the packaging bag supplied with the opening of the bag upward with each grip pair. iv), (v) and the unloading step (vi) using a packaging machine that is installed so as to intermittently stop in order, and filling the packaging bag opened in the opening step (ii) in the filling step (iii) In the vibrating steps (iv) and (v), the bottom of the packaging bag is vibrated with a shaking table to level the filled contents, and in the unloading step (vi), the same as the center clamp is used. The first swing arm provided with the width shifting clamps disposed on both sides of the clamp is swiveled on the intermittently stopped packaging bag, and the bag opening portion is grasped by the width shifting clamp and moved toward the center. Grasp the bag mouth portion which has been contracted by the central clamp, and then, while holding the bag mouth portion, swing the first swing arm to the next convergence step (vii). And at the same time, raise the bag mouth slightly upward,
In (vii), after the convergence portion of the packaging bag squeezed by the guide member at the time of the movement is gripped by the holding clamp, the center clamp is released, and the first swing arm is pivotally moved to the unloading step. The second swing arm provided with the twisting device that makes the rotary clamp rotatable by the motor drive device in synchronization with the second binding arm is moved from the rear binding end position (ix) to the forward convergence step (vi).
After the turning movement in i), the bag mouth portion is grasped by the rotating clamp of the twisting device, and the holding clamp is released, and the rotating clamp is rotated to make the converging portion tightly twisted. In the tape binding step (viii), the packaging bag in the twisted state is rotated by the second swing arm while being twisted by the tape sticking device provided in the movement path of the second swing arm. A tape is stuck to the constricted portion of the packaging bag to bind the package, and then the packaging bag is moved to the binding end position (ix) of the second swing arm, and then the rotation clamp of the twisting device is released. A packing method for binding a tape at a bag mouth, wherein the packing bag is discharged by a method. 2. The tape binding of the bag mouth according to claim 1, wherein in the tape binding step (viii), the lower part of the constricted portion of the packaging bag is pressed from behind by the arm of the pressing device to perform the binding. Packaging method. 3. A tape binding step (viii) and a binding end position (i).
3. The tape bundling of the bag mouth according to claim 1, wherein during x), the upper part of the tape bundling portion of the packaging bag is cut by a cutter provided in the movement path of the second swing arm. Applying packaging method.