JP4184214B2 - Gazette bag / flat bag packaging machine - Google Patents

Description

  The present invention relates to an automatic packaging machine that can handle two types of bags, gusset bags and flat bags.

  Automatic packaging using gusset bags and flat bags is performed using a rotary wrapping machine dedicated to gusset bags and a rotary type and linear movement type packaging machine dedicated to flat bags. Wrapping is not done by a table wrapping machine. By the way, in order to be able to use two types of bags, a gusset bag and a flat bag, with one packaging machine, at least a grip device for gripping the bag must be compatible with both bags.

  As a grip device for a gusset bag having folded pieces on both sides, “Gazette bag opening / closing device” according to the present applicant is disclosed in Japanese Utility Model Publication No. 7-18571. The opening / closing device can hold the front and rear, right and left (four places) vertical edges of the gusset bag between the fixed bite piece and the movable bite piece, and can grip the bag. The structure is such that the bag mouth of the gusset bag that has been gripped is opened or closed in a timely manner by moving the two sliding rods relatively in the front-rear direction.

  In the filling process of the packaging machine, the packaged item is filled with the bag opening of the gusset bag opened, and the folded folded piece of the bag is put inward before sealing the bag opening in the subsequent process. Folding work is performed. As a device for performing the folding operation, “Gazette bag folding device” according to the present applicant is disclosed in Japanese Utility Model Publication No. 7-2193. When the gusset bag whose bag mouth is opened is conveyed and stopped in the folding device, the slide shaft descends and the folding rods that have advanced to both sides of the bag are swung to fold the folding piece. Then, the slide shaft is raised and retracted above the bag. In addition, at the time of the folding operation, the front and rear vertical edges of the gusset bag sandwiched by the grip device are approached to close the bag mouth.

Japanese Patent Laid-Open No. 2003-146212 discloses a bag delivery device that supplies a grip device with bags that receive a large number of bags one by one from a bag feeding means. The bag delivery device includes a pair of adsorbing members that adsorb the bag from both sides and hold it vertically, an opening / closing means for opening and closing the bag, and a horizontal reciprocation between the bag receiving position and the delivery position to the gripper. It is comprised from the moving means to move.
Japanese Utility Model Publication No. 7-18571 No. 7-2193 JP 2003-146212 A

  An object of the present invention is to provide a packaging machine that can handle two types of bags, gusset bags and flat bags.

In order to achieve the above object, the invention described in claim 1 is intermittently fed by a bag delivery means linked to a bag feeding means while moving a plurality of grip pairs while intermittently stopping and moving a plurality of grip pairs at a plurality of steps. A bag is provided to be supplied to each grip pair, and a bag supported in a suspended form by each grip pair is filled with an article to be packaged in the filling process, and then the bag mouth is sealed in the sealing process, and the bag is sealed. In a packaging machine configured to discharge the bag out of the machine in the product discharge process,
For the bag, for gusset bags with folds on both sides, flat bags and free standing bags with folds on the bottom,
The grip pair is provided with a pair of left and right holders that can be horizontally rotated within a small angle range in the left-right direction, and a first slide rod having a rack on the inner surface and a second slide rod having a rack on the inner surface. A first slide rod and a second slide rod which are arranged in parallel with the holder and meshed with both racks and are movable in the front-rear direction by rotation of the pinion are attached to the first slide rod. A first sandwiching portion in which a movable sandwiching portion provided at the distal end of the first movable support member is detachably provided to a fixed sandwiching portion provided at the distal end of the fixed support member, and a second attached to the second slide rod. A second sandwiching portion provided so that the movable sandwiching portion provided at the distal end of the second movable support member is detachable from the fixed sandwiching portion provided at the distal end of the fixed support member. 1st clamping part The corresponding distance between the second holding portions of the fine lateral expansion and contraction adjustably arranged according to the width dimension of the bag, when the gusset bag is the longitudinal edge of the front, rear, left and right by the first clipping part and second clipping part In the case of a flat bag including the self-supporting bag , sandwiching and gripping the bag, the first sandwiching portion or the second sandwiching portion is provided to sandwich the vertical edges on both sides and grip the bag,
As for the bag delivery means, an adsorbing member that adsorbs the front and / or rear surface of the bag by a vacuum action is disposed opposite to a pair of opening and closing arms, and the opening and closing arms are supplied from the bag supply means. A reciprocating movement between a position for receiving the bag and a position for passing the bag to the grip pair,
As for the folding means installed in the folding process downstream of the filling process, a pair of left and right provided with a spindle with a support plate attached in the horizontal direction can be raised and lowered by the drive means, and the support plate can be adjusted to approach or separate. At the front end of each horizontal axis, a frame piece that rotatably supports the horizontal hook portion of the bowl-shaped folding rod is fixed, and at least two engagement holes are provided. The formed positioning piece is fixed to the horizontal hook portion of the folding hook, and one of the engagement holes is engaged with a pin provided at the tip of the horizontal shaft, whereby the vertical hook portion of the folding hook is brought into a vertical posture. By engaging the other engagement hole with the pin, the vertical hook portion of the folding hook is converted into a horizontal posture, and a lever fixed to the rear end of each horizontal shaft is shaken by the driving means. In the case of a gusset bag, Folding the folding pieces on both sides of the gusset bag by at moving the front end of the longitudinal rod portion that was vertical position of the folding lever actuates the lever inwardly to each other, to raise the main shaft at the same time subjected to the folding It is provided so as not to hinder the transfer of the bag, and in the case of a flat bag, it is provided so as not to hinder the passage of the flat bag by converting the vertical hook part of the folding bag into a horizontal posture. And

In order to achieve the same object, the invention described in claim 2 is the gusset bag / flat bag wrapping machine according to claim 1 , wherein when the bag width dimension of the flat bag is large, the outside of the grip pair. A flat bag can be gripped by the first sandwiching portion by removing the second sandwiching portion disposed on the second slide rod.

(Invention of Claim 1)
This gusset bag / flat bag wrapping machine is equipped with two types of bags, gusset bags and flat bags (including self-supporting bags), and a mechanism part corresponding to the bag used. Can be easily performed, and the equipment cost can be reduced.

(Invention of Claim 2)
This gusset bag / flat bag wrapping machine is provided with a second pinching part that is arranged on the outside of the grip pair, so that it can be removed by removing it when the bag width is large. There is an advantage that can be.

  The best mode of the present invention will be described below with reference to the drawings. 1 is a plan view of a gusset bag / flat bag wrapping machine, FIG. 2 is a front view of the bag delivery device, FIG. 3 is a side view for explaining the operation of delivering the bag from the bag delivery device to the grip pair, and FIG. 4 is a gusset bag. FIG. 5 is a plan view of the grip pair showing a state where the gusset bag is gripped from the state shown in FIG. 4, and FIG. 6 is a grip showing a state where the flat bag is received in the first holding portion. FIG. 7 is a front view of the folding means showing a state in which the folding hook is in a vertical posture and a horizontal posture, FIG. 8 is a plan view of the folding means, and FIG. 9 is a rear view of the folding means.

  The gusset bag / flat bag combined packaging machine 1 of the present invention is a rotary automatic packaging machine, and a fold piece d is formed on both sides of a used bag so that a front vertical edge b and a rear vertical edge c are provided. The gusset bag a, the flat bag h, and a self-supporting bag having a folded piece at the bottom are targeted, but all of these bag structures are known.

  For reference, the size of the gusset bag a handled by the packaging machine 1 is 80 to 130 mm in bag width and 170 to 300 mm in length, and the size of the flat bag h is 100 to 230 mm in bag width and length. 170-380 mm.

  In FIG. 1, this gusset bag / flat bag packaging machine 1 includes a rotating body provided with ten pairs of grips 25 so as to project radially at equal angular intervals, a bag feeding process (b), a printing process (b) ), Bag inflating process (c), bag opening process (d), filling process (e), vibration process (f) and (g), folding process (for gusset bags), sealing process (re), It is a bag supplied by the bag delivery means 10 that is intermittently stopped and moved every 10 processes of the seal cooling / product discharge process (N) and linked to the bag supply means 5 in the bag supply process (A). The gusset bag a or flat bag h (including a self-supporting bag) is gripped by the grip pair 25 with the bag mouth facing upward, and the gusset bag a or flat bag h is covered by the filling means 80 in the filling step (e). In the case of a gusset bag filled with packaging, the folding means 50 in the folding process (h) The insert d is folded inward, the bag mouth is sealed by the sealing means 85 in the sealing step (R), and the sealing portion is cooled by the cooling means 90 at the seal cooling / product discharge station (N) to remove the product. The general configuration is to discharge to the outside of the machine.

The bag supply means 5 has a structure conforming to the conveyor type supply device disclosed in Japanese Patent Application Laid-Open No. 10-194238, Japanese Utility Model Publication No. 3-5532, etc. according to the present applicant.
That is, the bag supply means 5 includes a stocker unit 6 for storing a plurality of gusset bags a or flat bags h selected on a belt conveyor using a round belt 7 and a feeding belt (see FIG. (Not shown) is provided at the top of the belt conveyor to feed out the feeding means 8 so that the feeding belt is fed forward from the belt conveyor and fed from the top bag to the forward end in order, and the bag located at the forward end is turned with a suction cup. It is a known configuration in which it is once lifted and sucked by a suction lever of a turning lever (not shown) and supplied to the bag delivery means 10 described later.

  The bag delivery means 10 is provided between the bag supply means 5 and the grip pair 25 that is intermittently stopped in the bag supply process (A). As shown in FIG. 2, a rotary shaft 11 of the bag delivery means 10 is erected on the machine base 2, and the rotary shaft 11 is set at a predetermined angle, here, an angular range of about 36 ° by a cam lever mechanism (not shown). Are reciprocally rotated. The horizontal bar 12 fixed to the upper end of the rotary shaft 11 supports a pair of horizontal shafts 13 and 15 arranged in parallel in the horizontal direction so as to be rotatably supported, and gears 14 fixed to the shafts 13 and 15. 16 is meshed. A lever 17 is fixed to one end of the horizontal shaft 13 on the rotating shaft 11 side, and a drive rod 18 operating in the vertical direction is connected to the lever 17. A pair of inverted T-shaped opening / closing arms 20 and 22 are fixed to the other ends of the horizontal shafts 13 and 15. The open / close arms 20 and 22 are provided with suction cup members 21 and 23, which are suction members for adsorbing the front and rear surfaces of the gusset bag a or the front surface of the flat bag h in a timely manner by a vacuum action. FIG. 3).

Thus, when the gusset bag a is targeted, the bag mouth supplied from the bag supply means 5 by the open / close arms 20 and 22 of the reed 12 having the “position for receiving the bag” r as the original position is turned up. The sucked bag 21 is sucked and held by the sucker members 21 and 23, and then, the horizontal shaft 12 is rotated and moved to the grip pair 25, which will be described later, by the rotational operation of the rotary shaft 11. is positioned so that longitudinal edge c of the rear respectively corresponding to the first clamping portion g ₁ little longitudinal edge b of the front opening the opening and closing arms 20 and 22 to the second holding portion g ₂ just prior to掴着at , it is provided to close the first holding portion g ₁ and the second clamping portion closing arms 20 and 22 is tuned with clamping operation of g ₂ again so as to release the sucking operation of the suction cup members 21, 23. The reed 12 is provided so as to return to the original “position for receiving the bag” r by the reverse rotation operation of the rotating shaft 11 after the bag a is passed to the grip pair 25.

  Next, when the flat bag h is the target, the suction cup member that exerts the vacuum suction action on the flat bag h with the bag mouth supplied from the bag supply means 5 by the opening / closing arms 20, 22 of the reed 12 23 and the suction cup member 21 whose vacuum suction action has been stopped, and then the horizontal shaft 12 is rotated to the grip pair 25 by the rotational operation of the rotary shaft 11 to the “position for passing the bag” s. In addition, about the other suction cup member 21, it is comprised so that the adsorption | suction operation may be stopped automatically by only pressing the front surface of the flat bag h or releasing the pressing operation.

In s "position passes a bag", both sides of the longitudinal edges were positioned to correspond to the first clamping portion g _1, first clamping operation of the clamping portion g ₁ when to掴着the flat bag h at grip pair 25 And the suction operation of the suction cup member 23 is released.
The bag delivery means 10 is configured as described above.

The grip pair 25 has a structure conforming to “Gazette bag opening / closing device” described in Japanese Utility Model Publication No. 7-18571.
That is, a central shaft that is intermittently rotated by a main drive mechanism such as a Geneva mechanism is erected at the center of the packaging machine, and a support arm (not shown) is fixed to a rotating plate fixed to the central shaft. Yes. The support arm is provided with a pair of left and right holders 26 and 26 pivotally supported so as to be horizontally rotatable within a small angle range in the left and right direction, and both holders 26 and 26 are always urged inward by a pulling spring 29. It is provided as follows. In these holders 26, 26, a first slide rod 27 having a rack (not shown) on the inner surface and a second slide rod 28 having a rack (not shown) on the inner surface are arranged in parallel. A pinion (not shown) is engaged with the rack, and a first slide rod 27 and a second slide rod 28 are provided so as to be movable in the front-rear direction by rotating the pinion.

As shown in FIG. 4, a first fixed support member 30 having a fixed clamping portion 31 at the tip is attached to the first slide rod 27. The first fixed support member 30 is attached with a first movable support member 33 having a movable clamping portion 34 at the tip thereof via parallel links 32, 32, and a guide having one end fixed to the first movable support member 33. The other end of the bar 35 is loosely fitted to the base portion of the first fixed support member 30, and the movable holding portion 34 is provided to be pressed toward the fixed holding portion 31 by a coil spring 36 attached to the guide bar 35. Then, the roller member 37 attached to the rear end of the first movable support member 33 is pressed by a pressing means (not shown) or the pressing operation is released, so that the movable holding portion 34 can be brought into and out of contact with the fixed holding portion 31. constituting the first clamping portion g ₁ which is a.

The second slide rod 28 is detachably provided with a second fixed support member 40 having a fixed clamping portion 41 at the tip by a bracket 40a. The second fixed support member 40 is arranged in parallel to the outside of the first fixed support member 30, and the fixed support member 40 is provided with a movable holding portion 44 at the tip thereof via parallel links 42 and 42. The second movable support member 43 is attached. The other end of the guide bar 45 whose one end is fixed to the second fixed support member 40 is loosely fitted to the base of the second movable support member 43, and the movable holding portion 44 is fixed by the coil spring 46 attached to the guide bar 45. It is provided so as to repress toward 41. Then, by pressing the roller member 47 attached to the rear end of the second movable support member 43 with a pressing means (not shown) or releasing the pressing operation, the movable holding portion 44 can be brought into and out of contact with the fixed holding portion 41. constituting the second pinching portion g ₂ which was.

The first clamping portion g ₁ and the second clamping portion corresponding distance g ₂ of the left and right lateral expansion and contraction adjustable to fit the width of the gusset bag a or flat bag h by the rotation operation of the holder 26, 26 Is provided. Further, when the bag width dimension of the flat bag h is large, by removing the bracket 40a of the second fixed support member 40 constituting the second holding portion g ₂ of the grip pairs 25 from the second slide rod 28, a large It is provided to be掴着by flat bag h the first clamping portion g ₁ size.

Thus, in the case of the gusset bag a, the grip pair 25 is, as shown in FIG. 5, the longitudinal edges b, c on the front, rear, left and right (four locations) by the first clamping part g ₁ and the second clamping part g _2. In the case of a flat bag h, as shown in FIG. 6, the vertical edges on both sides are clamped by the first clamping part g ₁ to grip the bag h. It is configured.

Reference numeral 50 denotes a folding means installed in the folding process (H). The folding means 50 has a structure in accordance with the “Gazette bag folding device” described in Japanese Utility Model Publication No. 7-2193 according to the present applicant.
In FIG. 7, a main shaft 51 of the folding means 50 is provided so as to be movable up and down by a driving means by a cam lever mechanism (not shown), and a support plate 52 is horizontally attached to the lower end thereof. The bearings 53, 53 fixed on the upper surface of the support plate 52 at a predetermined interval are freely provided with a screw shaft 54 whose screw cutting direction is reversed at the left and right portions, and a knob 55 is provided at one end of the screw shaft 54. Is attached. A pair of left and right moving elements 56, 56 are screwed onto the screw shaft 54, and the moving elements 56, 56 are provided so as to be able to approach or separate from each other by rotating the knob 55.

  As shown in FIG. 8, the moving elements 56, 56 support the horizontal axes 57, 57 in the front-rear direction so as to freely rotate, and the piece pieces 58, 58 are fixed to the front ends of the horizontal axes 57, 57. These piece pieces 58 and 58 are rotatably supported with horizontal hook portions 60b and 60b of hook-shaped folding hooks 60 and 60, and L-shaped guide pieces 61 and 61 are attached as viewed from above. 62 and 62 are positioning pieces fixed to the horizontal hooks 60b and 60b of the folding hooks 60 and 60, and two engaging holes 63 and 64 are formed in the positioning pieces 62 and 62.

  Thus, as shown in FIG. 7, the folding rods 60 and 60 are engaged with one pin 57a provided at the tip of the horizontal shaft 57 so that the vertical rod portion 60a is in a vertical posture. By engaging the other engagement hole 64 with the pin 57a, the vertical flange 60a is provided to be converted into a horizontal posture. 65, 65 are coil springs interposed between the guide pieces 61, 61 and the positioning pieces 62, 62 in the horizontal hook portions 60b, 60b of the folding hooks 60, 60. The coil springs 65, 65 allow the positioning pieces 62, 62 is provided so as to oppress the piece pieces 58 and 58.

  As shown in FIG. 9, a lever 67 having a roller 68 attached to the free end is fixed to the rear ends of the horizontal shafts 57, 57, and pins 69, 69 projecting below the levers 67, 67 are fixed. A tension spring 70 is interposed therebetween. Reference numerals 71 and 71 are stoppers for restricting the amount of upward movement of the levers 67 and 67, and the stoppers 71 and 71 are provided so that the amount of movement of the vertical hooks 60a and 60a of the folding hooks 60 and 60 can be adjusted inward. ing. The levers 67 and 67 are swingably provided by allowing the pressing plate 75 to be raised and lowered by driving means using a cam lever mechanism (not shown).

  Thus, in the case of the gusset bag a, the folding means 50 is configured to move the levers 67 and 67 by the pressing plate 75 when the main shaft 51 is lowered, so that the vertical hook portions 60a and 60a are in the vertical posture. By moving the leading ends inward, the folded pieces d on both sides of the gusset bag a are folded, and when the folding is performed, the main shaft 51 is moved up almost simultaneously so as not to hinder the transfer of the bag a. Has been. Moreover, in the case of the flat bag h, it is provided so as not to hinder the passage of the flat bag h by converting the vertical hook portions 60a, 60a of the folding hooks 60, 60 into a horizontal posture as described above. Yes.

Next, the operation of the gusset bag / flat bag packaging machine 1 will be described separately for the gusset bag a and the flat bag h.
(In the case of a gusset bag)
(1) In the bag supply means 5, the feeding belt of the feeding means 8 is fed forward from the belt conveyor and fed from the leading gusset bag “a” accommodated in the stocker section 6 to the forward end, and the gusset bag located at the forward end. Once a is turned up with a suction cup, it is once lifted and sucked with a suction lever of a turning lever (not shown) and supplied to the bag delivery means 10.
(2) The gusset bag a with the bag mouth supplied upward from the bag supply means 5 by the opening / closing arms 20 and 22 of the reed 12 of the bag delivery means 10 at the “position to receive the bag” r is sucked by the suction cup members 21 and 23. Then, the reed 12 is rotated and moved to the grip pair 25 to the “position for passing the bag” s by the rotating operation of the rotating shaft 11.
(3) relative to the grip pair 25 is intermittently stopped at bag feeding step (b), the rear little longitudinal edge b of the front opening the opening and closing arms 20 and 22 to the second holding portion g ₂ just prior to掴着the longitudinal edges c are positioned such that the first clamping portion g ₁ of each corresponding suction cup to close the opening and closing arms 20 and 22 again is tuned with clamping operation of the first holding portion g ₁ and the second clamping portion g ₂ The suction operation of the members 21 and 23 is released. Thus, gusset bag a supplied from the bag transfer unit 10 is掴着are sandwiching the longitudinal edges b, c of the front, rear, left and right by the first clamping portion g ₁ and the second clamping portion g _2.
(4) The gusset bag a seized by the grip pair 25 is printed with the date of manufacture in the printing step (b), and compressed air is blown in the bag inflating step (c) to open the bag mouth. In step (d), the front and rear surfaces are adsorbed to open the bag mouth, and in the filling step (e), the package is filled with filling means 80, and in the vibration step (f) and (g), the bag bottom is filled. Will be leveled.
(5) When the gusset bag a is intermittently stopped in the folding step (h), the main shaft 51 of the folding means 50 is lowered and the vertical hooks 60a, 60a of the folding hooks 60, 60 are placed outside the folding piece d of the bag a. Advance. Next, the levers 67, 67 are actuated by the upward movement of the presser plate 75 to move the ends of the vertical hook portions 60a, 60a in the vertical posture of the folding hooks 60, 60 inwardly, thereby moving the both sides of the gusset bag a. Fold the folded piece d. Almost simultaneously with the folding, the main shaft 51 moves up so as not to hinder the transfer of the bag a.
(6) The gusset bag a is sealed at the bag mouth e by the sealing means 85 in the sealing step (ii), and the sealed portion is cooled by the cooling means 90 at the seal cooling / product discharge station (nu) to become a product. Discharged outside the machine.

(For flat bags)
(1) Same as (1) in the case of the gusset bag a.
(2) At the “bag receiving position” r, the vacuum bag has a vacuum suction effect on the flat bag h with the bag mouth supplied from the bag supply means 5 by the open / close arms 20 and 22 of the horizontal bag 12 of the bag delivery means 10. After holding the sucker member 23 and the sucker member 21 whose vacuum suction action has been stopped, the horizontal shaft 12 is rotated and moved to the grip pair 25 to the “position for passing the bag” s by the rotating operation of the rotary shaft 11. At this time, the other suction cup member 21 is controlled to stop the suction operation only by pressing the front surface of the flat bag h or releasing the pressing operation.
(3) In s "position passes the bag", when to掴着flat bag h at grip pair 25 is positioned so as to correspond to both sides of the longitudinal edge to the first holding portion g _1, first clamping portion g The suction operation of the suction cup member 23 is released in synchronization with the sandwiching operation ₁ . Thus, gusset bag a supplied from the bag transfer unit 10 is掴着the left and right longitudinal edge is clamped by the first clamping portion g _1.
(4) Same as (4) in the case of the gusset bag a.
(5) In the case of the flat bag h, the folding means 50 is not used. Therefore, here, the vertical hook portions 60a, 60a of the folding hooks 60, 60 are manually converted into a horizontal posture in advance so as not to hinder the passage of the flat bag h.
(6) Same as (6) in the case of the gusset bag a.

  As described above, according to this gusset bag / flat bag wrapping machine, two types of gusset bags and flat bags can be handled by one unit, and the related mechanism part corresponding to the bag to be used Can be easily switched. In addition, in the conventional packaging, dedicated gusset bags and flat bags are required, but in the present invention, only one unit is required, so that the equipment cost can be greatly reduced.

Top view of gusset bag / flat bag packaging machine Front view of bag delivery device Side view explaining operation of handing bag from bag handing device to grip pair Top view of grip pair showing gusset bag acceptance The top view of the grip pair which shows the state which gripped the gusset bag from the state of FIG. The top view of a grip pair which shows the state which receives a flat bag in the 1st clamping part Front view of the folding means showing the folding fold in a vertical position and a horizontal position Plan view of folding means Rear view of folding means

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Gazette bag and flat bag combined packaging machine a ... Gazette bag b ... Vertical edge of front side c ... Vertical edge of rear side d ... Folding piece e ... Bag mouth h ... Flat bag 5 ... Bag supply means 10 ... Bag delivery means r ... Position for receiving bag s ... Position for delivering bag 21, 23 ... Suction cup member (adsorption member)
20, 22 ... Opening / closing arm 25 ... Grip pair 26 ... Holder 27 ... First slide rod 28 ... Second slide rod 30 ... First fixed support member 31 ... Fixed clamping Part 33 ... first movable support member 34 ... movable sandwiching part 40 ... second fixed support member 41 ... fixed sandwiching part 43 ... second movable support member 44 ... movable sandwiching part g ₁ ... first holding portion _g 2 ... second holding portion 50 ... folding means 51 ... main shaft 52 ... supporting plate 56 ... movable body 57 ... horizontal axis 57a ... Pin 60 ... Folding hook 60a ... Vertical hook 60b ... Horizontal hook 62 ... Positioning pieces 63, 64 ... Engagement hole 67 ... Lever 75 ... Holding plate

Claims (2)

A plurality of grip pairs are intermittently stopped for each of the plurality of processes and moved so that bags intermittently fed by the bag delivery means linked to the bag feeding means are supplied to each grip pair. A bag supported in a suspended form is filled with an article to be packaged in the filling process, the bag mouth is sealed in the sealing process, and the sealed bag is discharged outside the machine in the product discharging process. In the packaging machine
For the bag, for gusset bags with folds on both sides, flat bags and free standing bags with folds on the bottom,
The grip pair is provided with a pair of left and right holders that can be horizontally rotated within a small angle range in the left-right direction, and a first slide rod having a rack on the inner surface and a second slide rod having a rack on the inner surface. A first slide rod and a second slide rod which are arranged in parallel with the holder and meshed with both racks and are movable in the front-rear direction by rotation of the pinion are attached to the first slide rod. A first sandwiching portion in which a movable sandwiching portion provided at the distal end of the first movable support member is detachably provided to a fixed sandwiching portion provided at the distal end of the fixed support member, and a second attached to the second slide rod. A second sandwiching portion provided so that the movable sandwiching portion provided at the distal end of the second movable support member is detachable from the fixed sandwiching portion provided at the distal end of the fixed support member. 1st clamping part The corresponding distance between the second holding portions of the fine lateral expansion and contraction adjustably arranged according to the width dimension of the bag, when the gusset bag is the longitudinal edge of the front, rear, left and right by the first clipping part and second clipping part In the case of a flat bag including the self-supporting bag , sandwiching and gripping the bag, the first sandwiching portion or the second sandwiching portion is provided to sandwich the vertical edges on both sides and grip the bag,
As for the bag delivery means, an adsorbing member that adsorbs the front and / or rear surface of the bag by a vacuum action is disposed opposite to a pair of opening and closing arms, and the opening and closing arms are supplied from the bag supply means. A reciprocating movement between a position for receiving the bag and a position for passing the bag to the grip pair,
As for the folding means installed in the folding process downstream of the filling process, a pair of left and right provided with a spindle with a support plate attached in the horizontal direction can be raised and lowered by the drive means, and the support plate can be adjusted to approach or separate. At the front end of each horizontal axis, a frame piece that rotatably supports the horizontal hook portion of the bowl-shaped folding rod is fixed, and at least two engagement holes are provided. The formed positioning piece is fixed to the horizontal hook portion of the folding hook, and one of the engagement holes is engaged with a pin provided at the tip of the horizontal shaft, whereby the vertical hook portion of the folding hook is brought into a vertical posture. By engaging the other engagement hole with the pin, the vertical hook portion of the folding hook is converted into a horizontal posture, and a lever fixed to the rear end of each horizontal shaft is shaken by the driving means. In the case of a gusset bag, Folding the folding pieces on both sides of the gusset bag by at moving the front end of the longitudinal rod portion that was vertical position of the folding lever actuates the lever inwardly to each other, to raise the main shaft at the same time subjected to the folding It is provided so as not to hinder the transfer of the bag, and in the case of a flat bag, it is provided so as not to hinder the passage of the flat bag by converting the vertical hook part of the folding bag into a horizontal posture. A gusset bag / flat bag packaging machine. When the flat bag has a large bag width dimension, the flat bag can be gripped by the first pinching portion by removing the second pinching portion disposed outside the grip pair from the second slide rod. The gusset bag / flat bag packaging machine according to claim 1, wherein the gusset bag / flat bag packaging machine is provided.

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