JP2016101927A - Rotary type packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging machine for a gusset bag which can charge and package a packaged object in even a flat bag.SOLUTION: A rotary type packaging machine in which a set of two clamp arms 54 equipped with a clamp 53 for holding a package 52 is so provided on an outer peripheral edge of an intermittently rotating rotor 51, as to be projected in a radial direction outer side, and which performs packaging work at plural positions on the outer periphery of the rotor 51. A charging hopper is provided at a charging position where an object to be packaged is charged among the plural positions, and a gusset switching device 75, which sucks the package 52 held by the clamp 53 from the front and rear sides and switches the package 52 held by the clamp 53, is positioned at the charging position. The gusset switching device 75 is equipped with a switching mechanism 76 having a sucker 78 which sucks a gusset bag from the front and rear sides and opens the gusset bag, and a mechanism for opening and closing the sucker 78.SELECTED DRAWING: Figure 3

Description

The present invention relates to a rotary packaging machine that can also be used as a gusset bag, for example, while being a standard packaging machine using a flat bag.

FIG. 13 is a cross-sectional plan view of the gripper of the automatic filling machine disclosed in Patent Document 1 that holds the two side edges of the gusseted bag G at two locations. In this gripper, each chuck holder 8 has first and second cylindrical portions 15 and 16, and first and second cylindrical members 29 and 31 are slidably fitted back and forth within the cylinder, First and second air cylinders 36 and 46 are installed. The inner fixed chuck 25 is fixed to the tip of the first cylindrical member 29, the inner movable chuck 26 is attached to the tip of the piston rod 37 of the first air cylinder 36, and the outer fixed chuck 27 is attached to the tip of the second cylindrical member 31. Is fixed, and the outer movable chuck 28 is attached to the tip of the piston rod 47 of the second air cylinder 46 via the coupling mechanism 48, and opens and closes as the piston rods 37 and 47 advance and retract, respectively.

A plurality of grippers of the automatic filling machine are installed at equal intervals around a transfer member that rotates continuously or intermittently, and sandwiches the two side edges of the gusset bag G at two locations, together with the transfer member. Rotate along the path. While the transfer member makes one rotation, a gusset bag G is supplied to the gripper, and both side edges are sandwiched by the gripper so that the gusset bag G is sequentially opened, filled with contents, and as required. Each process such as bag mouth sealing is performed.

JP 2010-6384 A

However, the packaging machine provided with the gripper of the automatic filling machine of Patent Document 1 is a gusset bag-only machine, and cannot fill and wrap an article to be packaged using a flat bag. Users may request not only gusset bags but also flat bags to be used for filling and packaging, and in such cases, a gusset bag packaging machine and a flat bag packaging machine must be provided. However, there is a problem that it requires approximately double the cost and installation area.

An object of the present invention is to provide a rotary type packaging machine that can also be used as a gusset bag while being a standard packaging machine using a flat bag.

The rotary type packaging machine of the present invention is provided with a pair of clamp arms each provided with a clamp for sandwiching a wrapping bag on the outer peripheral edge of a rotor that rotates intermittently, and protruding in the radially outward direction. A rotary wrapping machine that performs a packaging operation in the position of the above, wherein a loading hopper is provided at a loading position for loading a packaged object among the plurality of positions, and a gusset bag sandwiched between clamps is disposed at the loading position. A gusset exchanging device having a exchanging mechanism for exchanging is arranged, and the exchanging mechanism includes a sucker that sucks a gusset bag from the front and rear to open a bag mouth, and a mechanism that opens and closes the sucker. .

The present invention, in the loading position, by placing a gusset changing device that sucks the gusset bag held by the clamp from the front and back and changes the gusset bag held by the clamp, the gusset bag is changed to the gusset changing device, The bag mouth is opened and the package is loaded from the loading hopper. The flat bag is clamped by the clamp without using the gusset transfer device, and the package is loaded from the loading hopper.

In the rotary type packaging machine of the present invention, the gusset bag changing device for changing the gusset bag is arranged at the loading position, so that the gusset bag is packed by the gusset changing device, and the flat bag is held by the clamp for the packing operation. Therefore, it is possible to use both a gusset bag and a flat bag with a single rotary packaging machine.

Top view of the rotary packaging machine of the present invention Side view of the rotary packaging machine of the present invention Partial enlarged view of the rotary type packaging machine of the present invention The top view which showed the holding mechanism and pneumatic circuit of this invention Side sectional view of a drive mechanism that swings the holding mechanism of the present invention Internal plan view of the holding mechanism of the present invention Side sectional view of the holding mechanism of the present invention Internal plan view of the gusset folding mechanism of the present invention Front view and plan view of the rotary packaging machine of the present invention in use Front view and plan view of the rotary packaging machine of the present invention in use Schematic showing the charging state of the charging hopper Explanatory drawing of the use state of the rotary type packaging machine of the present invention Plan sectional view of the gripper of a conventional automatic filling machine

Hereinafter, the present embodiment will be described with reference to the drawings. The rotary type packaging machine 50 includes a pair of clamps 53 having clamps 53 (including a flat bag and a gusset bag) at the tip of the outer periphery of a disc-shaped rotor 51 that rotates intermittently. A clamp arm 54 is provided so as to protrude outward in the radial direction. As shown in FIG. 3, the clamp arm 54 is operated by a clamp air cylinder 56 mounted on a mounting pole 55 erected on the lower floor surface of the rotor 51 to rotate a rotating plate 57, thereby rotating the rotating arm 57. A pin roll 59 provided at the lower portion of the clamp arm 54 is pushed by a knock plate 58 at the upper end of the moving plate 57 to open and close the clamp 53 at the tip (the clamp 53 is composed of a fixed claw 53A and a movable claw 53B, In the following, the opening and closing of the clamp 53 means that the movable claw 53B is opened and closed). In addition, the code | symbol 60 of FIG. 1 is the control box of this rotary type packaging machine 50. FIG.

The rotary wrapping machine 50 performs wrapping operations at eight positions, and wraps an article to be packaged. Hereinafter, each position of (1) to (8) will be briefly described. The first position (1) is a bag supply position, and a bag box 61 in which a bag 52 is stored is disposed on the outer periphery of the rotor 51, and from the bag box 61 to the clamp arm 54 side of the rotor 51. A wrapping bag 52 is supplied. Note that a bag supply device in the form of a conveyor may be used instead of the bag box 61.

The second position (2) is a bag opening position for a flat bag, and a pair of L-shaped pipes to which a mouth opening suction cup 63 is attached from a bag opening apparatus 62 disposed on the outer peripheral portion of the rotor 51. Protrudes toward the clamp 53 (see FIG. 2), and the bag opening of the bag (flat bag) 52 sandwiched between the clamps 53 is opened by the opening suction cup 63. A spatula (not shown) provided at the tip of the arm 64 on the rotor 51 is inserted into the bag mouth of the opened bag (flat bag) 52, and the next third position ( Go to 3). In the case of the gusset bag 52A, the bag opening position (2) does not perform the packaging operation and passes the gusset bag 52A.

The third position (3) is a position for placing an article to be packaged, and the article to be packaged is loaded into the packaging bag 52 opened from the loading hopper 65. Details of this input position will be described later. In the case of a packaged item that needs to be replaced with gas, in the third position (3), the empty packing bag 52 is filled with an inert gas in advance, and the packaged item is loaded in the fourth position (4). May be.

The fourth position (4) is a vibration position, in which a vibration device 66 (see reference numeral 136 in FIG. 11) is arranged below the clamp arm 54, and the object to be packaged that has been loaded into the packaging bag 52 at the package loading position. Improve the packing condition. In addition, this 4th position (4) is good also as a gas filling position filled with an inert gas according to the kind of to-be-packaged object. In addition, although the 5th position (5) of FIG. 1 is a reserve position which is not performing the packaging operation, when the 4th position is a gas filling position, the 5th position (5) may be a vibration position. .

The sixth position (6) is a deaeration position, in which a deaeration device 67 is disposed on the outer peripheral portion of the rotor 51, pressing the wrapping bag 52 from the front and back, and excess air or inert gas in the wrapping bag 52 Is exhausted to an appropriate amount. The next seventh position (7) is a sealing position, in which the bag mouth of the wrapping bag 52 is sealed by a sealing device 68 disposed on the upper outer periphery of the rotor 51.

The eighth position (8) serves both as a cooling position and a carry-out position. A cooling device 69 is provided on the upper outer periphery of the rotor 51, and a carry-out conveyor 70 is disposed on the lower part. After the bag mouth of the wrapping bag 52 heated by the sealing device 68 is cooled by the cooling device 69, the clamp 53 is opened, and the wrapping bag 52 filled with an article to be packaged is dropped onto the carry-out conveyor 70 and carried out.
In addition, each said position is a mere example, Comprising: You may change according to a to-be-packaged item, and this invention is not limited to a position like said embodiment.

Next, the package input position of the third position (3) will be described in detail. Unlike the conventional rotary type packaging machine, this packaged material input position includes a gusset transfer device 75. The gusset transfer device 75 is used when an article to be packaged is put into the gusset bag 52A. Further, as shown in FIG. 2, the third position is provided with a loading hopper 65 for loading an article to be packaged, and the gusset bag 52A opened by the gusset transfer device 75 is inserted from the loading hopper 65 into the package. Throw things in. Hereinafter, the gusset transfer device 75 and the charging hopper 65 will be described.

As shown in FIG. 3, the gusset transfer device 75 includes a transfer mechanism 76 and a folding mechanism 77. The former holding mechanism 76 is a mechanism for changing the gusset bag 52 </ b> A from the clamp 53 to the suction cup 78, opening the bag opening, and loading a packaged item from the loading hopper 65. The rotary type packaging machine 50 of the present invention includes the gusset transfer device 75, but unlike the patent document 1, the rotary type packaging machine 50 includes the same clamp 53 as the conventional one and performs the same function as the conventional one. The packaging machine 50 can be used in combination with a flat bag and a gusset bag 52A.

The holding mechanism 76 includes a pair of left and right suction cup arms 79 provided with a plurality of (four) suction cups 78 facing inward. The pair of sucker arms 79 are configured to approach and separate in the horizontal direction by a bell crank mechanism 80 described later. The sucker arm 79 is made of a metal plate material, and includes a thick base end portion 83 screwed to the bottom of sliders 81 and 82, which will be described later, and a rectangular mounting portion 84 extending from the base end portion 83. The inner edge portion from which the suction cup 78 protrudes is bent in an inverted L shape. Two long holes 85 are formed in the central portion of the mounting portion 84 close to each other in the longitudinal direction. Is attached. The position of the inner suction cup 78A can be adjusted by loosening the screw 86 and sliding the elongated hole 85 in accordance with the size of the gusset bag 52A. Short elongated holes 87 are formed on both sides of the elongated hole 85. A block in which the outer suction cup 78 </ b> B is fitted is attached to the back surface of the attachment portion 84 through the short elongated hole 87 by a knob screw 88. By loosening the knob screw 88, the position of the outer suction cup 78B can be adjusted according to the size of the gusset bag 52A.

At the rear end of the inner suction cup 78A and the outer suction cup 78B, an air connection portion 89 is provided. As shown in FIG. 4, the inner suction cup 78A and the outer suction cup 78B are connected to the respective pneumatic circuits 90. The gusset bag 52A has a different size. That is, in the gusset bag 52A having a small width, only the inner pneumatic circuit 90A functions and is sucked by the inner suction cup 78A to open the bag mouth of the gusset bag 52A. In the gusset bag 52A having a large width, only the outer pneumatic circuit 90B functions, or the inner pneumatic circuit 90A and the outer pneumatic circuit 90B function simultaneously, and the outer pneumatic circuit 90B or the inner suction cup 78A is also combined. The bag mouth is adsorbed and opened. Reference numeral 90C in FIG. 4 is an inner pneumatic circuit filter, and 90D is an outer pneumatic circuit filter. The pneumatic circuit 90 includes a drive cylinder pneumatic circuit 90E for a drive cylinder 91 that drives the bell crank mechanism 80. The drive cylinder 91 is disposed in the upper portion of the cover 92 in the central longitudinal direction.

The drive cylinder 91 reciprocates the one slider 81 along the slide shaft 93. As the one slider 81 reciprocates, the other slider 82 reciprocates along the slide shaft 93 via the bell crank mechanism 80. The drive cylinder 91 is pivotally supported on the upper part of a support 71 (see FIGS. 9 and 10) whose rear end is erected in the cover 92, and the piston rod 91 A is fixed after being attached to the rear of one slider 81. It is pivotally supported on a spindle 95 standing on the plate 94. A support column 71 that pivotally supports the rear end of the drive cylinder 91 is fixed by a handle 96 in a long hole formed in the longitudinal direction of the bottom plate of the cover 92. When changing the distance between the pair of suction cup arms 79 in accordance with the opening size of the bag mouth of the gusset bag 52A, the handle 96 is loosened and the column 71 is moved by the adjusting screw 97 on the side surface of the cover 92. Adjust the position. By adjusting the position of the drive cylinder 91, the distance between the sliders 81 and 82 and the suction cup arm 79 can be adjusted.

The pair of suction cup arms 79 are moved toward and away from each other as a pair of sliders 81 and 82 stored in the cover 92 reciprocate in different directions. That is, as shown in FIG. 7, the sliders 81 and 82 are composed of two block bodies each having a through hole, and each slide shaft 93 is inserted into the through hole of each block body. The block bodies are integrally connected by long bolts 98. Since the base end portion 83 of the suction arm 79 is fixed to the bottom surfaces of the sliders 81 and 82 by screws, the pair of suction arms 79 are moved closer to and away from each other by the reciprocating movement of the pair of sliders 81 and 82 in different directions. To do. In addition, two parallel slide shafts 93 on which the sliders 81 and 82 slide are attached to the front lower portion in the longitudinal direction of the cover 92 (in FIG. The front side and the side far from the suction cup arm 79 are the rear side).

A bell crank mechanism 80 that reciprocates the pair of sliders 81 and 82 in different directions is disposed between the drive cylinder 91 and the slide shaft 93 (see FIGS. 6, 9, and 10). That is, a rotating shaft 102 is erected on the upper portion of a horizontal mounting member 100 mounted on the rear side of the slide shaft 93 in the cover 92 via the support plate 101, and the rotating arm 103 is pivoted on the rotating shaft 102. One end of each of the rod ends 104 and 105 is pivotally supported at both ends of the rotating arm 103. The other end of the one rod end 104 is pivotally supported by the support shaft 95 connected to the piston rod 91A of the drive cylinder 91, and the other end of the other rod end 105 is attached to the rear of the other slider 82. It is pivotally supported on the upper part of the rear fixing plate 94. (See Figs. 7 and 9)

A front fixing plate 106 is attached to the front part of each of the pair of sliders 81, 82, and a locking projection 107 projects from the inside of the front fixing plate 106, and a tension is provided between the pair of locking projections 107. A spring 108 is applied, and the pair of sliders 81 and 82 are always urged in the approaching direction. Accordingly, when the piston rod 91A of the drive cylinder 91 is extended, one slider 81 moves to one end side of the slide shaft 93 against the biasing force of the tension spring 108, and the other slider 82 The bell crank mechanism 80 moves to the other end side of the slide shaft 93 and the pair of suction cup arms 79 are separated. When the air from the drive cylinder 91 is removed, the pair of sliders 81 and 82 approach each other due to the urging force of the tension spring 108. Needless to say, the mechanism for moving the suction cup arm 79 is not limited to the bell crank mechanism 80 as shown in FIG.

The holding mechanism 76 is moved toward and away from the rotor 51 by the link body 109 (see FIGS. 9 and 10), but the link body 109 is swung by the swing driving mechanism 110 shown in FIG. The swing drive mechanism 110 converts the rotational motion of the main shaft 112 pivotally supported on the base 111 into swing motion by the crank 113, and this swing motion is transmitted to the rotary shaft 115 via the connecting link 114. Is done. An upper end portion of the rotation shaft 115 protruding from the base 111 and a rotation support shaft 120 supported by an elevating pole 119 standing on a corner portion of the base 111 are connected by the link body 109. The link body 109 includes a short first arm 116 attached to the rotation shaft 115, a long second arm 117 attached to the lower portion of the rotation support shaft 120, and the first arm 116 and the second arm. An adjustment rod 118 that connects the tips of 117 is connected to transmit the rotational force of the rotation shaft 115 to the rotation support shaft 120.

A rotating rod 121 shown in FIG. 6 is attached to the upper part of the rotating support shaft 120. A mounting base 122 is fixed by bolts on the rotating rod 121, and the tip of the mounting base 122 is attached to the horizontal mounting member 100. When the rotation shaft 115 is rotated by the main shaft 112, the rotation support shaft 120 is rotated by the link body 109, and the holding mechanism 76 supported on the rotation support shaft 120 is swung. For this reason, the holding mechanism 76 approaches and separates from the rotor side.

Next, the folding mechanism 125 shown in FIG. 8 will be described. The folding mechanism 125 is a mechanism for folding the side folded portion 52B of the gusset bag 52A opened by the holding mechanism 76 inward. The folding mechanism 125 has a rotating arm 126 attached to the side thereof, and a rear end portion of the rotating arm 126 is supported by the rotating support shaft 120 on which the holding mechanism 76 is supported. It swings in the same way. The folding mechanism 125 includes a pair of thick “<” shaped plate-shaped holding arms 127, and a thin plate-shaped folding plate 128 is vertically attached to the ends of the pair of holding arms 127. . When the holding arm 127 is closed, as shown by a solid line in FIG. 8, the pair of folding plates 128 are opposed to each other with a space that allows the side folding portion 52B of the gusset bag 52A to be folded. A rear end portion of the holding arm 127 is pivotally supported on the substrate 134 by a shaft 129. Further, a pin 130 protrudes downward from the bent portion of the holding arm 127, and this pin 130 is engaged with a long hole 132 of the movable plate 131 described later.

A V-shaped movable plate 131 is provided below the holding arm 127 so as to be slidable in the left-right direction in FIG. The elongated hole 132 into which the pin 130 of the holding arm 127 engages is formed in a portion protruding in the lateral direction at the tip of the V-shaped movable plate 131. Further, an air cylinder 135 is provided in the center left and right direction of the substrate 134, and a piston rod 135 </ b> A of the air cylinder 135 is connected to the center portion of the movable plate 131. A tension spring 137 is stretched between the tip of the piston rod 135A and the substrate 134, and biases the piston rod 135A of the air cylinder 135 in a contracting direction. Accordingly, when the air in the air cylinder 135 is released, the piston rod 135A contracts, and the movable plate 131 indicated by the phantom line moves in the direction of the movable plate 131 indicated by the solid line. As the movable plate 131 moves, the pin 130 engaged with the elongated hole 132 also moves, and the holding arm 127 rotates about the shaft 129 as the pin 130 moves, and the holding arm 127 closes.

A loading hopper 65 for loading an article to be packaged is supported on the outer peripheral upper portion of the third position (3) by the lifting pole 119, and is moved up and down by the vertical movement of the lifting shaft 119A of the lifting pole 119. As shown in FIG. 11, the upper portion of the charging hopper 65 has an inverted frustoconical shape, and a crocodile port 65A is attached to the lower portion, and the crocodile port 65A is opened and closed by an air cylinder (not shown). The crocodile port 65A opens in the direction of the suction cup 78 that is spaced apart from the holding mechanism 76, and the bag mouth of the gusset bag 52A is sandwiched from the inside and outside by the suction cup 78 and the crocodile port 65A. It acts so that the gusset bag 52A adsorbed on the surface does not fall. A vibration plate 136 that vibrates up and down is also provided below the gusset bag 52A in the third position (3), and gives vibration to the gusset bag 52A and holds the bottom of the gusset bag 52A.

Next, the operation of the gusset transfer device 75 will be described. FIG. 9 shows a state where the empty gusset bag 52A sandwiched between the clamps 53 is intermittently stopped at the third position (3), and the suction cup 78 of the suction arm 79 attracts the gusset bag 52A. That is, when the gusset bag 52A stops at the third position (3), the separated suction cup arm 79 approaches by the urging force of the tension spring 108, and as shown in FIG. 9, the suction cup 78 of the suction cup arm 79 moves to the gusset bag 52A. Abuts against the front and rear surfaces of the. Thereafter, when it is detected by a pressure sensor or the like that the suction cup 78 adsorbs the front and rear surfaces of the gusset bag 52A, the movable claw 53B of the clamp 53 is opened to release the gusset bag 52A (see FIG. 12A). Thereafter, the tips of the pair of clamp arms 54 are opened, and the clamp arms 54 are retracted.

When the piston rod 91A of the drive cylinder 91 is extended, one slider 81 moves to one end, and the bell crank mechanism 80 moves the other slider 82 to the other end. By moving 82 to the different end side, the suction cup arm 79 is separated to open the bag mouth of the gusset bag 52A. At the same time, the rotation shaft 115 rotates clockwise, the rotation support shaft 120 rotates clockwise by the link body 109, and the holding mechanism 76 also rotates clockwise, so that the gusset bag 52A is separated from the rotor 51. Therefore, as shown in FIGS. 10 and 12B, the bag mouth of the gusset bag 52A is opened, and the center line M of the bag mouth of the gusset bag 52A is based on the rotation trajectory R of the clamp 53, so that the retraction distance of FIG. Move outward by S.

As described above, the gusset bag 52A having the bag mouth opened moves outward by the retreat distance S, and the feeding hopper 65 is inserted into the bag mouth of the gusset bag 52A at the loading position to open the crocodile mouth 65A (FIG. 11). reference). When the crocodile mouth 65A is opened, the article to be packaged is put into the gusset bag 52A.

When charging of the package is finished, the air of the air cylinder 135 of the folding mechanism 125 is released, the movable plate 131 is moved by the tension spring 137, and the holding arm 127 is closed. For this reason, the side folding part 52B of the gusset bag 52A is folded by the folding plate 128. At the same time, the air of the drive cylinder 91 is released, the pair of sliders 81 and 82 are brought close to each other by the biasing force of the tension spring 108, and the pair of suction arm 79 is closed. By closing the pair of suction cup arms 79, the bag mouth of the gusset bag 52A adsorbed by the pair of suction cups 78 is moved away from the rotation locus R of the clamp 53 by the retraction distance S (FIGS. 10 and 12). B) at the center line M of the bag mouth).

Thereafter, with the movable claw 53B of the clamp 53 open, the interval is narrowed so that the gusset bag 52A can clamp the tips of the pair of clamp arms 54. When the tips of the pair of clamp arms 54 are narrowed, the rotation shaft 115 rotates counterclockwise and the rotation support shaft 120 rotates counterclockwise via the link body 109. For this reason, the gusset bag 52A held by the suction cup arm 79 moves to the position of the rotation locus R of the clamp 53 and comes into contact with the fixed claw 53A of the clamp 53 (state of FIG. 12A). At that time, after the folding plate 128 of the folding mechanism 125 moves together with the gusset bag 52A, the holding arm 127 is opened and retracted. Thereafter, the movable claw 53B of the clamp 53 is closed, and the clamp 53 clamps both sides of the gusset bag 52A to complete the change of the gusset bag 52A. Thereafter, the gusset bag 52A moves to the next fourth position (4).

As described above, the gusset bag 52A is moved outward from the rotation locus R of the clamp 53 by the retraction distance S when the bag mouth of the gusset bag 52A is opened at the position of the rotation locus R of the clamp 53. This is because the rear surface of the bag mouth may come into contact with the fixing claw 53A of the clamp 53 (see FIG. 12A). Further, when the bag mouth is closed and the gusset bag 52A is transferred from the suction cup arm 79 to the clamp 53 after the package is loaded, the fixing claw 53A of the clamp 53 to be closed may come into contact with the gusset bag 52A. It is. As described above, in order to avoid contact between the clamp 53 and the gusset bag 52A, the gusset bag 52A is moved to the retreat position outside the retraction distance S from the rotation locus R of the clamp 53.

In the above description, the case where the article to be packaged is put into the gusset bag 52A has been described. However, when the article to be packaged is put into the flat bag, the flat bag is clamped by the clamp 53 of the clamp arm 54 in the same manner as the normal rotary packaging machine 50. Insert the package from the charging hopper. In the case of the wrapping bag (flat bag) 52, the gusset transfer device 75 stops and does not perform the transfer operation.

In the above-described embodiment, the gusset changing device 75 includes the holding mechanism 76 and the folding mechanism 125, but the folding mechanism 125 is not necessarily required.

The present invention is useful for, for example, a rotary packaging machine that can also be used as a gusset bag while being a standard packaging machine that uses a flat bag.

50 Rotary packaging machine,
51 Rotor 52 Wrapping Bag 52A Gusseted Bag 52B Side Folding Portion 53 Clamp 54 Clamp Arm 65 Loading Hopper 75 Gusset Changing Device 76 Holding Mechanism 77 Folding Mechanism 78 Suction Cup 79 Suction Cup Arm 109 Link Body 110 Oscillation Drive Mechanism

Claims (3)

A rotary type in which a set of two clamp arms provided with clamps for holding a wrapping bag is provided on the outer peripheral edge of the intermittently rotating rotor so as to project radially outward, and packaging is performed at a plurality of positions on the outer periphery of the rotor. A packaging machine,
Among the plurality of positions, a loading hopper is provided at a loading position for loading a packaged item,
In the loading position, a gusset changing device provided with a changing mechanism for changing the gusset bag held between the clamps is arranged,
The rotary mechanism includes a suction cup that sucks a gusset bag from the front and back to open a bag mouth, and a mechanism that opens and closes the suction cup. 2. The mechanism according to claim 1, wherein the holding mechanism includes a mechanism for swinging the gusset bag adsorbed by the suction cup between a rotation locus of the clamp and a retracted position outside the rotation locus. The rotary packaging machine described. The rotary wrapping machine according to claim 1, wherein the gusset transfer device includes a folding mechanism that folds a side folding portion of the gusset.

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