JP5651845B2 - Tetra packaging bag packaging machine and manufacturing method of tetra packaging bag - Google Patents

Description

  The present invention relates to, for example, a rotary type packaging machine that automatically fills a tetra-shaped packaging bag with a packaged object and further wraps it automatically. TECHNICAL FIELD The present invention relates to a tetra packaging bag packaging machine and a method for manufacturing a tetra packaging bag that increase the speed of filling and packaging.

  FIG. 19 is a perspective view of a tetra-shaped packaging bag. The tetra-shaped packaging bag 6 is a tetrahedral packaging bag that is opened and sealed so as to intersect the bag mouth 12 with respect to a sealing edge 16 at the bottom of a known flat bag. However, the tetra packaging bag packaging machine of the present invention is not limited to a flat bag. For example, the packaging machine may be a packaging bag such as a stand pack or a flat bag with a fastener on the bag bottom side. A bag may be used.

  Patent Document 1 is a conventional rotary packaging machine for filling a tetra-shaped packaging bag with an object to be filled. The rotary packaging machine of this Patent Document 1 is equipped with eight sets of clamp arms, each consisting of a one-on-one set with a clip at the tip, on the periphery of the disk-shaped rotor.

Since the wrapping bag is supplied between both clamps in the region where the pair of clamps is most widened, the pair of clamps sandwiches both side edges of the wrapping bag. As the rotation of the rotor advances by one pitch, the opening of the wrapping bag is widened by reducing the clamp interval, and the packaged item is filled into the wrapping bag through the hopper. Thereafter, the bag mouth of the wrapping bag is tensioned due to the expansion of the distance between both clamps, and the pair of seal bars seal the bag mouth with a strong pressure.

In the rotary type packaging machine disclosed in Patent Document 1, a pair of spatulas is inserted into the bag mouth of the wrapping bag at an intermediate position between a position where the package is filled and a position where the bag mouth is strongly sealed. In this case, the arrangement of the pair of spatulas is in the Y-axis direction that crosses the X-axis in the arrangement direction of both clamps. Subsequently, the pair of spatulas are separated along the Y axis to tension the opening edge of the wrapping bag, and at the same time, the pair of clamps are opened to release the wrapping bag.

  Further, by rotating the bag 90 degrees at a proper timing, the bag mouth of the bag is redirected to a position coaxial with the arrangement axis X of both clamps, and at the same time, both edges of the bag are re-catched with both clamps.

Japanese Patent No. 3732400

  However, in the rotary type packaging machine of Patent Document 1, a pair of spatulas is inserted into the bag mouth of the wrapping bag and the pair of spatulas are separated along the Y-axis in the rotational path of the disk-shaped rotor. At the same time that the mouth is tensed, the pair of clamps are opened to release the wrapping bag, and the wrapping bag is rotated by 90 degrees to change the direction of the wrapping bag mouth to the coaxial axis with the arrangement axis X of both clamps. At the same time, re-catch both sides of the bag with both clamps. As described above, in order to rotate and change the packing bag 90 degrees in the rotation path of the disk-type rotor, many operations must be performed, which makes it difficult to increase the speed of the packaging machine.

The present invention relates to a tetra packaging bag packaging machine and a method for producing a tetra packaging bag, which is faster than a conventional packaging machine in a rotary packaging machine for automatically packaging an object to be packaged in a tetra-shaped packaging bag. The purpose is to provide.

The tetra packaging bag packaging machine of the present invention has a packaging supply mechanism arranged at the periphery of the packaging supply position of the rotary packaging machine, and the packaging bag supply mechanism is opened with the bag mouth side up. In the direction in which the bag mouth intersects the sealing edge of the bag bottom of the wrapping bag by inserting a pair of spatulas into the opening of the wrapping bag opening A bag mouth widening mechanism that approaches the rotary packaging machine side while expanding the spatula is provided.

Moreover, the manufacturing method of the tetra-packaging bag of this invention is the sealing edge of the bag bottom of a sachet between delivery with a rotary type packaging machine and a sachet supply mechanism like a sachet conveyance conveyor and a bag box. On the other hand, the bag is formed into a tetra shape in the process of delivering the package to the rotary packaging machine by expanding the bag mouth in the direction intersecting.

  The tetra packaging bag packaging machine of the present invention is a rotary packaging machine for automatically packaging an article to be packaged in a tetra-shaped packaging bag, and can increase the speed as compared with a conventional rotary packaging machine.

The top view of the whole packaging machine for tetra packaging bags of Example 1 The top view which shows the state which delivers the packaging bag from the packaging supply mechanism of Example 1 Schematic side view of the bag carrying conveyor of Example 1 Side view of the bag lifting mechanism and the bag opening raising mechanism of the first embodiment Side view of the pouch opening raising mechanism of the first embodiment Overall side view of bag opening mechanism of embodiment 1 Partial enlarged view of FIG. The partial front view of the bag mouth expansion mechanism of Example 1 The top view which shows the state which the bag opening | mouth expansion mechanism of Example 1 rotates. Front view of the delivery mechanism of Embodiment 1 The top view of the delivery mechanism of Example 1 Side view of clip mechanism Overall plan view of the tetra packaging bag packaging machine of Example 2 Side view of the pouch lifting mechanism and pouch opening raising mechanism of the second embodiment Front view of the packaging machine for the tetra packaging bag of Example 2 Partial enlarged view of FIG. Partial top view of the packaging machine for tetra packaging bags of Example 2 Front view of the delivery mechanism of the second embodiment Tetra packaging bag perspective view

Example 1
Hereinafter, the present embodiment will be described with reference to the drawings. FIG. 1 is an overall schematic plan view of a tetra packaging bag packaging machine according to a first embodiment of the present invention, and FIG. 2 is a plan view showing a process of changing from a flat bag to a tetra-shaped packaging bag.

1 and 2 show a radial extension line 4 (hereinafter referred to as an extension line of the packaging supply position) connecting the packaging supply position 3 from the center of the disk-shaped rotor 2 of the rotary packaging machine 1. A long bag transport conveyor 5 which is a kind of the bag supply mechanism is arranged, and the bag (flat bag) 6 is opened in a tetra shape between the bag transport conveyor 5 and the rotary packing machine 1. A mechanism for supplying to the rotary packaging machine 1 is shown. In FIG. 1, reference numeral 7 denotes an operation unit in which a vacuum pump or the like is accommodated, and 8 denotes an operation unit.

First, an outline from the delivery of the wrapping bag conveyor 5 to the delivery of the wrapping bag 6 to the rotary packaging machine 1 will be described. A wrapping bag (flat bag) 6 is placed on the wrapping bag conveyer 5 in an overlaid state, and two string-like rubber belts 9 stretched over the entire length of the conveyor are attached to the tip of the wrapping bag 6. Send to the side. As shown in FIG. 4, a wrapping-up mechanism 11 for transferring the wrapping bag 6 to the wrapping bag opening upright mechanism 10 is provided at the front end portion of the wrapping bag conveyor 5.

A sachet opening raising mechanism 10 is provided above the sachet lifting mechanism 11, and the sachet 6 is received from the sachet lifting mechanism 11 and opened with the bag mouth 12 facing upward. Stand up. Further, a bag opening widening mechanism 13 as shown in FIG. 6 is provided on the right side of the leading end of the bag transporting conveyor 5, and a pair of spatulas 14A and 14B are inserted into the bag opening 12 of the standing bag 6 opening. Then, the spatula 14A, 14B is expanded and tensioned in the direction in which the bag mouth 12 intersects with respect to the sealing edge 16 of the bag bottom of the wrapping bag 6, and is rotated and delivered to the delivery mechanism 17 side.

Further, a delivery mechanism 17 as shown in FIG. 10 is arranged on the outer peripheral edge of the rotary packaging machine 1 adjacent to the bag opening expanding mechanism 13 and is held by the bag opening expanding mechanism 13. The bag opening 12 is clamped from above and rotated to the clamp arm 18 side of the rotary packaging machine 1 to deliver the packaging bag 6.

As described above, the sachet 6 on the sachet transport conveyor 5 passes through the sachet opening erecting mechanism 10, the sack opening expanding mechanism 13, and the delivery mechanism 17, and at the wrapping bag supply position 3 of the rotary packaging machine 1. It is delivered to the clamp 19 of the clamp arm 18. Meanwhile, in the bag opening widening mechanism 13, the flat bag 6 can be opened in a tetra shape, and the tetra bag 6 can be prepared while the bag is conveyed from the bag transport conveyor 5 to the rotary packaging machine 1. . In the following, the delivery mechanism 17 will be described in order from the packaging conveyor 5 according to the flow of the packaging 6.

(Packaging conveyor)
FIG. 3 is a front view of the bag carrying conveyor. A plurality of pulleys 21 are arranged on a long conveyor main body 20, and the bag-like conveyance conveyor 5 is rotated by a string-like rubber belt 9 wound around a conveyance motor 22 arranged at the lower part of the main body. The wrapping bag 6 that is placed on top of each other is conveyed forward of the conveyor.

Further, an auxiliary belt 24 that pushes the wrapping bag 6 on the wrapping transfer conveyor 1 forward is disposed at the upper part of the conveyor body 20, and the wrapping bag 6 is continuously pulled up so that it can be reliably adsorbed by the sucker 11 </ b> A. Send to the tip of the conveyor. It is detected by a contact sensor (not shown) whether or not the sachet 6 is reliably delivered to the tip.

In addition, although the bag transport conveyor 5 was used for the bag supply mechanism, a general bag box (not shown) may be used instead of the conveyor 5.

As shown in FIG. 4, the wrapping and lifting mechanism 11 has two parallel parallel bars 26 spanning the parallel links 25 arranged at the front end side of the conveyor body 20 over the entire length in the width direction of the conveyor 5. A pair of support blocks 15 are fixed near both ends of the parallel bar 26, and the support block 15 is provided with a bag sucking up sucker 11A.

After the packaging bag 6 adsorbed by the packaging suction cup 11A rotates the lower link 29 by the rotation of the rear shaft 28 and the packaging bag lifting suction cup 11A lifts the packaging bag 6 at the tip small, further rearward The rotation of the shaft 28 causes the upper link 30 together with the lower link 29 to rotate greatly, and the bag 6 is lifted up and delivered to the bag opening erecting mechanism 10. A member provided at the lower part of the parallel link 25 in FIG.

(Packaging opening mechanism)
The sachet opening upright mechanism 10 opens the sachet 12 of the sachet 6 received from the sachet suction sucker 11A to such an extent that a pair of closed spatulas 14A and 14B can be inserted, and the sachet 12 is turned up. The action which raises (hangs) the wrapping bag 6 is achieved.

As shown in FIGS. 4 and 5, the wrapping bag opening upright mechanism 10 has a rod 34 attached horizontally to the tip of a rotation arm 33 provided on the first lateral rotation shaft 32, and the rotation A lifter 35 is attached along the arm 33. The pivot arm 33 pivots to receive the packaging bag 6 from the packaging bag suction cup 11A at the lower position, and stands up with the bag mouth 12 of the packaging bag 6 up at the upper position, and the closed spars 14A and 14B are closed. The bag mouth 12 is opened to such an extent that it can be inserted.

One pair of suction cups 36 is attached to the rod 34, and the other suction cup 37 is attached to the lower end of the lifter 35. The lifter 35 is always biased in a direction in which the other suction cup 37 is separated from the first suction cup 36 by a spring of a rod body. In order for the suction cup 36 and the suction cup 37 to open the bag mouth 12 of the sachet 6, one of the suction cups 36 adsorbs the sheet surface on the lower surface of the sachet 6 to the crankshaft 38 coaxial with the first lateral rotation shaft 32. The head 39 of the lifter 35 is pressed by the rotation of the provided pressing piece 39 and the sheet on the upper surface of the sachet 6 is adsorbed by the other suction cup 37, and then the pressing piece 39 is moved by the rotation of the crankshaft 38. When rotating in a direction away from the portion 40, the lifter 35 is raised by the biasing force of the spring, and the bag mouth 12 is opened.

(Bag opening mechanism)
6 is an overall side view of the bag opening expanding mechanism, FIG. 7 is a partially enlarged view of FIG. 6, and FIG. 8 is a partially front view. The bag opening expanding mechanism 13 is stretched and tensioned with a pair of spatulas 14A and 14B in a direction crossing the bag opening 12 of the packing bag 6 with respect to the sealing edge 16 of the bag bottom, and In order to deliver to the delivery mechanism 17, it rotates to the rotary packaging machine 1 side. FIG. 9 is a plan view showing a state in which the bag mouth opening mechanism 17 rotates.

In the bag mouth expanding mechanism 13, a casing 41 that houses the mechanism is supported on the top of the pole 42. A first vertical rotation shaft 43 that rotates the casing 41 and a central shaft 44 that is coaxial with the rotation shaft 43 are inserted into the pole 42. In order to move the spatula 14 </ b> A, 14 </ b> B up and down, the first vertical rotation shaft 43 and the middle shaft 44 are moved up and down by a lever 45 below the ball 42.

Further, the first vertical rotation shaft 43 rotates the casing 41 by a groove cam (not shown). The middle shaft 44 urges a link 62 provided on the upper portion of the middle shaft 44 counterclockwise by a spring 46 below the ball 42.

As shown in FIG. 8, a slide rail 47 is attached in the longitudinal direction inside the casing 41 of the bag opening expanding mechanism 13, and a pair of sliders 48 are fitted into the slide rail 47. Further, as shown in FIG. 7, L-shaped brackets 49 and 50 are attached to the slider 48, and spats 14 </ b> A and 14 </ b> B projecting downward are attached to the front ends of the brackets 49 and 50.

The bag mouth 12 is expanded in a straight line by a pair of spatulas 14A and 14B to hold the wrapping bag 6. Further, clamping pieces 51 are provided on both sides of the spatula 14A and 14B so that the bag mouth 12 is sandwiched from inside and outside. While being held in place, it is delivered to the delivery mechanism 17.

The clamping piece 51 is attached to the tip of a support shaft 53 that is rotatably supported by a block bearing 52 attached to the upper part of the brackets 49 and 50. The holding piece 51 is formed with a slit that is somewhat larger than the thickness of the spatula 14A, 14B, and is biased toward the spatula 14A, 14B by a coil spring 54 fitted on the support shaft 53, and the spatula 14A, 14B is fitted into the slit. It is configured to get stuck.

As shown in FIG. 9, a rear end piece 55 is attached at a right angle to the rear end of the support shaft 53, and a roller 56 is attached to the rear end of the rear end piece 55. The opening of the clamping piece 51 is performed by pushing down the roller 56 by the air cylinder 57 for the clamping piece. The air cylinder 57 is attached to the upper part of the casing 41 in the vertical direction, and a long presser lever 58 is attached to the lower end of the piston of the air cylinder 57.

As described above, by the biasing force of the coil spring 54, the spatula 14A, 14B and the sandwiching piece 51 sandwich and hold the bag mouth 12 of the sachet 6 from inside and outside, but when the sachet 6 must be opened, The roller 56 is pushed down by the holding lever 58 of the air cylinder 57 to rotate the support shaft 53, and the bag 6 is released from the holding piece 51.

Next, the operation of the spatula 14A, 14B will be described. The pair of spatulas 14A, 14B in the center of FIG. 8 shows a closed state, and the pair of spatulas 14A, 14B on both sides shows an opened state. When the sachet 6 is opened by opening the bag mouth by the sachet opening erecting mechanism 10 and the sachet 6 opened just below the closed spatula 14A, 14B is raised, the lever 45 shown in FIG. 44 is lowered and the spatula 14A, 14B in the closed state is inserted into the bag mouth 12. At this time, the air cylinder 57 pulls up the presser lever 58 and the coil spring 54 closes the holding piece 51 inward, and holds the bag mouth 12 between the spatula 14A and 14B and the holding piece 51 from inside and outside.

The narrow state in which the spatulas 14A and 14B are closed is when the casing 41 is positioned in the vertical direction of FIG. At this time, the tip of the link 62 is located inside the elongated hole 63 as shown in FIG.

As shown in FIG. 8, one end of racks 59 and 60 that mesh with each L-shaped bracket 49 and 50 so as to sandwich the pinion 61 from above and below is attached, and the other end is free. The racks 59 and 60 are movable in the longitudinal direction of the casing 41 together with the brackets 49 and 50 and the slider 48, and the movement of one rack 59 through the pinion 61 causes the other rack 60 to move in the opposite direction by the same distance. It is configured. The tip of the link 62 is connected to the upper portion of one bracket 49 far from the rotary packaging machine 1 through a long hole 63 formed in the casing 41, as shown in FIGS.

Even if the casing 41 is rotated clockwise by the rotation shaft 43 in the pole 42 with the spatula 14A, 14B inserted into the bag mouth 12, the middle shaft 44 does not rotate in the same manner as the first vertical rotation shaft 43. . On the contrary, since the spring 46 is urged counterclockwise, the tip of the link 62 is positioned from the inside to the outside of the long hole 63 as shown by the arrow A while rotating in the arrow B direction in FIG.

In the state of FIG. 8, when the casing 41 relatively moves to the right by the clockwise rotation of the rotation shaft 43 from the state where the pair of center spats 14 </ b> A and 14 </ b> B are stopped, the casing 41 is pivotally supported in the center. The pinion 61 is also moved. In a state where the tip of the link 62 is connected to the left bracket 49 and the movement is restricted, if the casing 41 and the pinion 61 move in the right direction, the pinion 61 rotates in the counterclockwise direction. The upper rack 59 that meshes with the pinion 61 moves horizontally with respect to the casing 41 in the left direction. When the upper rack 59 moves to the left, the left spatula 14A joined to the rack 59 via the bracket 49 similarly moves to the left, and stops at the position of the bracket 49 and the spatula 14A indicated by the imaginary line on the left end. To do.

Conversely, the lower rack 60 horizontally moves in the right direction in FIG. 8 with respect to the casing 41 by the counterclockwise rotation of the pinion 61. When the lower rack 60 moves in the right direction, the right spatula 14B joined to the rack 60 via the bracket 50 similarly moves in the right direction. As a result, the pair of spatulas 14 </ b> A and 14 </ b> B moves in a direction away from each other, and widens the bag mouth 12 of the bag 6.

As described above, the casing 41 also rotates as the first vertical rotation shaft 43 rotates in the clockwise direction, and one bracket 49 comes into contact with the stopper 64 attached to one end of the casing 41 as shown in FIG. . The casing 41 rotates clockwise, and the tip of the link 62 also rotates clockwise (arrow B direction). Finally, as shown in FIG. 9, the rotation of the casing 41 stops when the casing 41 rotates 45 degrees clockwise before and after the movement.

At this time, the upper center of the wrapping bag 6 is held by the clip mechanism 67 of the delivery mechanism 17 and the role of the sandwiching piece 51 ends. The air cylinder 57 pushes down the presser lever 58 to open the holding piece 51 outward and away from the spatula 14A, 14B. At the same time, since the casing 41 is raised by the lever 45, the spatula 14A, 14B is pulled out from the bag mouth 12. Since the first vertical rotation shaft 43 is rotated counterclockwise by a groove cam (not shown), the casing 41 returns to the vertical arrangement shown by the solid line in FIG. Since the upper and lower racks 59, 60 and the pinion 61 move in the opposite direction, the open spats 14A, 14B move in the closing direction. The length of the stopper 64 is adjusted according to the size of the bag.

(Delivery mechanism)
10 is a front view of the delivery mechanism, FIG. 11 is a plan view, and FIG. 12 is an enlarged view of the clip mechanism. The delivery mechanism 17 moves upward the central portion of the bag mouth 12 of the bag 6 held by the spatula 14A, 14B and the holding piece 51 in a state where the casing 41 of the bag mouth widening mechanism 13 of FIG. And is further rotated 45 degrees toward the clamp arm 18 side of the rotary packaging machine 1 to deliver the packaging bag 6. Therefore, by the rotation of the bag opening expanding mechanism 13 and the delivery mechanism 17, the bag opening expanding mechanism 13 rotates 90 degrees after receiving the bag 6 from the bag opening erecting mechanism 10 and receives it by the rotary packaging machine 1. hand over.

The delivery mechanism 17 includes a clip mechanism 67 at the tip of the long arm 66 that is pivotally supported by the support 65. The clip mechanism 67 is configured to open and close a clip 69 with a slip stopper on one of a pair of inverted T-shaped plate pieces, and to wrap the bag 6 held by the spatula 14A, 14B of the bag opening expanding mechanism 13 and the sandwiching piece 51. Hold from the top. As shown in FIG. 10, the clip 14 clamps the upper part of the sachet 6 so that the clamp 19 of the clamp arm 18 can clamp the upper both sides of the bag mouth 12 after the spatula 14A, 14B is removed.

The clip 69 is pivotally supported by a plate body 70 that is vertically attached to the tip of the long arm 66, and a sector gear 71 is provided on each inverted T-shaped plate piece constituting the clip 69. When both gears 17 mesh with each other and one rotates, the other rotates in the opposite direction to pinch the bag mouth 12 of the bag.

A rod-like extending portion 72 extends from the rear end of one sector gear 71, and the leading end of the extending portion 72 and the air cylinder 73 are connected by a connecting rod 74. Opens and closes.

The rear end of the long arm 66 is pivotally supported by the support column 65, and the rotation shaft 75 is connected to the drive shaft 77 of the drive column 76 standing near the support column 65, thereby driving the drive shaft. By the rotation of 77, the long arm 66 is rotated, and the clip mechanism 67 delivers the packaging bag 6 to the rotary packaging machine 1.

(Example 2)
Hereinafter, Example 2 will be described with reference to the drawings.
FIG. 13 is a plan view of the tetra packaging bag packaging machine according to the second embodiment. Since the basic mechanism of the tetra packaging bag packaging machine of the second embodiment is similar to that of the first embodiment, the differences will be mainly described below, and the same components will be described in detail using the same reference numerals. The detailed explanation is omitted.

In the packaging machine according to the second embodiment, the center line of the bag transport conveyor (a kind of bag supply mechanism) 5 intersects with the extension line 4 of the bag supply position by 90 degrees. Flat bags 6 are stacked on the bag transport conveyor 5.

At the front end of the bag transport conveyor 5, a bag lift-up mechanism 11 </ b> A that lifts the bag 6 is provided, and at the top of the front end of the bag transport conveyor 11, the bag opening upright mechanism 10 is arranged. This is the same as in the first embodiment. The flat bag 6 on the bag transport conveyor 5 is lifted by the bag roll-up mechanism 11, and the bag opening 12 is opened in the same direction as the extension line 4 of the bag supply position by the bag opening raising mechanism 10 to stand up. And hung.

A bag opening expanding mechanism 13 is disposed on the extension line 4 of the bag supply position in front of the bag transport conveyor 5. Unlike the first embodiment, the bag opening expanding mechanism 13 linearly reciprocates on the extension line 4 of the bag supply position, and the bag opening 12 is expanded to the delivery mechanism 17. Deliver the bag. The spatula 14A, 14B of the bag opening expanding mechanism 13 is inserted into the bag that is erected by the bag opening erecting mechanism 10, and the bag opening 12 extends in a direction intersecting with the extension line 4 of the bag supply position. Expanded. For this reason, the bag mouth 12 crosses the sealing edge 16 at the bag bottom in a cross shape.

The delivery mechanism 17 is disposed between the disc-type rotor 2 and the bag opening widening mechanism 13, and reciprocates on the extension line 4 of the bag supply position to transfer the bag 6 to the rotary packaging machine 1. Deliver. Hereinafter, each mechanism will be described in detail.

(Packaging conveyor)
FIG. 15 is a front view of the bag carrying conveyor. In this embodiment, the bag transport conveyor 5 is used for the bag supply mechanism, but a bag box may be used instead of the conveyor 5.

The pouch lifting mechanism 11 is basically the same as the first embodiment in that the pouch 6 on the conveyor 5 is lifted and transferred to the bag opening mechanism 13, but the configuration is different. That is, as shown in FIGS. 14 and 15, the wrapping and lifting mechanism 11 has a second horizontal rotation shaft 80 disposed at the lower front portion of the conveyor body 20, and rotates on the rotation shaft 80. A link body 81 is pivotally supported.

As shown in FIG. 14, in the rotation link body 81, a rotation rod 82 extending to the upper part of the conveyor body 20 is pivotally supported on the second lateral rotation shaft 80, and a right side is provided at the tip of the rotation rod 82. An upper rotating piece 83 extending in the direction is pivotally supported, and an inverted triangular lower rotating piece 84 extending in the left direction is pivotally supported on the horizontal rotating shaft 80. The lower apex of the piece 84 is connected by an auxiliary rod 85 so as to cross the rotating rod 82 obliquely.

One end of two parallel bars 26 parallel to the width direction of the bag carrying conveyor 5 is fixed to the upper rotating piece 83, and a pair of support blocks 15 are attached near both ends of the parallel bars. The support block 15 is provided with a bag sucking suction cup 11A.

Next, the operation of the wrapping bag lifting mechanism 11 will be described. When the second horizontal rotation shaft 80 in FIG. 14 rotates counterclockwise, the rotation rod 82 and the lower rotation piece 84 indicated by phantom lines rotate counterclockwise. The rotating rod 82 stops rotating at the position indicated by the solid line, but only the lower rotating piece 84 further rotates counterclockwise and stops at the lower horizontal position.

Since the support block 15 is pulled and rotated clockwise by the auxiliary rod 85 connected to the lower rotating piece 84 via the upper rotating piece 83, the bag sucking suction cup 11A provided on the support block 15 is lifted. Is also rotated clockwise and downward, and the suction cup 11 </ b> A comes into contact with the bag 6. A negative pressure is applied to the wrapped bag sucker 11 </ b> A, and the wrapped bag sucker 11 </ b> A adsorbs one wrapped bag 6 on the front end portion of the wrapped bag conveyor 5.

On the contrary, when the second horizontal rotation shaft 80 rotates clockwise, only the lower rotation piece 84 starts to rotate, and the support block 15 rotates counterclockwise by the auxiliary rod 85, and the bag is raised. The suction cup 11 </ b> A is also rotated counterclockwise and lifted, and only one package 6 is lifted.

When the lower rotating piece 84 further rotates in the clockwise direction, the contact body 86 attached to the left bottom corner of the lower rotating piece 84 comes into contact with the rotating rod 82, and the lower rotating piece 84 and the rotating rod 82 are in contact with each other. Rotate clockwise. By rotating the pivot rod 82 in the clockwise direction, the support block 15 and the bag lifting suction cup 11A rotate about the second lateral rotation shaft 80. The bag opening 12 of the unwrapped bag 6 rotates in the direction of the unwrapped opening standing mechanism 10 and is positioned just below the unwrapping opening standing mechanism 10 so that the unwrapped bag 6 is delivered to the unwrapping opening standing mechanism 10. Become.

(Packaging opening mechanism)
The wrapping bag opening upright mechanism 10 has the same configuration as that of the first embodiment, and has a pair of spatulas 14A and 14B before opening the bag mouth 12 of the wrapping bag 6 received from the wrapping bag suction sucker 11A. The same is true for opening the bag 6 so that it can be inserted and raising (suspending) the bag 6 with the bag mouth 12 facing up.

(Bag opening mechanism)
The bag opening expanding mechanism 13 according to the second embodiment expands the bag opening 12 of the packing bag 6 in a direction intersecting the sealing edge 16 of the bag bottom with a pair of spatulas 14A and 14B. However, the casing 41 does not rotate as in the first embodiment. Therefore, the casing 14 of the bag opening expanding mechanism 13 moves in a direction perpendicular to the transport direction of the bag transport conveyor 5 and on the extension line 4 of the bag supply position.

FIG. 16 is a partially enlarged view of FIG. 15 and a rear view of the bag opening expanding mechanism. The inside of the casing of the second embodiment is substantially the same as that of the first embodiment shown in FIG. 8, but in this second embodiment, there is no link 62, and the L-shaped bracket 49 is a spatula opening / closing air cylinder arranged at the upper part inside the casing. The pair of spatulas 14A and 14B expands left and right through the racks 59 and 60 and the pinion 61.

As shown in FIG. 15 and FIG. 17, a long side frame 91 is arranged in parallel with the extension line 4 of the packaging supply position and perpendicular to the center line of the packaging transport conveyor 5. A long lateral rail 92 is attached. A pair of sliders 93 is fitted into the horizontal rail 92, and the casing 41 slides along the horizontal rail 92.

An attachment plate 94 is bridged and fixed to the pair of sliders 93, and a short vertical rail 95 is attached to the attachment plate 94. A slider 96 is also fitted into the vertical rail 95, and the slider 96 is attached to the casing 41 via a side plate 97 attached to the side of the casing 41. With the above configuration, the casing 41 reciprocates in the horizontal direction on the extension line 4 of the bag supply position along the horizontal rail 92 and moves up and down in the vertical direction along the vertical rail 95.

The reciprocating movement of the casing 41 in the lateral direction is reciprocated in the lateral direction by a crank mechanism 98 connected to a mounting plate 94 fixed to the pair of sliders 93. The vertical movement of the casing 41 is lifted and lowered in the vertical direction by the lift pole 100. Hereinafter, the configuration for the vertical movement will be described.

An L-shaped bracket 102 is attached to the upper end of the lifting shaft 101 of the lifting pole 100 shown in FIG. 15, and a long push-up rail 103 is attached to the tip of the L-shaped bracket 102 in the moving direction of the casing 41. The push-up rail 103 pushes up the rotating wheel 104 below the side plate 97 on the side of the casing 41 and moves the casing 41 up and down along the vertical rail 95.

Next, after the bag opening expanding mechanism 13 receives the bag 6 from the bag opening raising mechanism 10 and expands the bag opening 12 in a direction crossing the sealing edge 16 at the bag bottom, The process of delivering the message to the delivery mechanism 17 will be described.

As shown in FIG. 16, when the bag opening upright mechanism 10 supports the bag mouth of the bag 6 so that the spatula 14A, 14B can be inserted and suspended, the push-up rail 103 that has lifted the casing 41 is lowered. Then, the narrowed spatula 14A, 14B is inserted into the bag mouth.

When the spatula 14A, 14B is inserted into the bag mouth, the spatula opening / closing air cylinder 90 in the casing 41 is actuated so that one L-shaped bracket 49 is moved sideways by the slider 48 and the spatula 14A is also moved.

When one L-shaped bracket 49 is moved, the lower rack 60 is moved in the reverse direction by the upper rack 59 and the pinion 61, so that the other L-shaped bracket 50 and the other spatula 14B attached to the rack 60 are moved. It moves outward in the direction opposite to the spatula 14A, and the bag mouth is expanded and tensioned in a direction intersecting the sealing edge 16 at the bag bottom.

The point which provides the clamping piece 51 on both sides of the spatula 14A, 14B, clamps the packaging bag 6, and hold | maintains the packaging bag 6 is the same as that of the said Example 1. FIG. Further, the opening of the clamping piece 51 is performed by pushing down the roller 56 by a presser lever 58 at the lower end of the air cylinder 57.

As described above, the crank mechanism 98 moves the bag opening expanding mechanism 13 toward the delivery mechanism 17 while the spatula 14A, 14B expands the bag opening 12. When the casing 41 arrives in the middle of the lateral rail 92, the center portion of the bag mouth 12 of the wrapping bag 6 expanded by the spatula 14A, 14B is clamped from above by the clip mechanism 67 of the delivery mechanism 17.

At the stage where the wrapping bag 6 is firmly held by the clip 69 of the delivery mechanism, the holding lever 58 is pulled up by the air cylinder 57 to release the holding piece 51 holding the wrapping bag 6 from the side. The rail 103 is pushed up, the casing 41 is raised, and the spatula 14A, 14B is pulled out from the wrapping bag 6. Furthermore, the casing 41 is pulled back by the crank mechanism 98 and the operation moves to the operation of holding the next packaging bag 6, and the delivery of the packaging bag 6 to the delivery mechanism 17 is completed.

(Delivery mechanism)
FIG. 18 is a front view of the delivery mechanism. The delivery mechanism 17 sandwiches the bag mouth 12 of the wrapping bag 6 held by the spatula 14A, 14B of the bag mouth widening mechanism 13 and the sandwiching piece 51 from above, and moves it to the clamp arm 18 side of the rotary packaging machine 1. The operation of delivering the wrapping bag is the same as that of the first embodiment. However, the delivery mechanism 17 is different in moving method from the first embodiment.

The delivery mechanism 17 according to the second embodiment is horizontally reciprocated on the extension line 4 of the bag supply position by the same lateral rail on which the bag opening expanding mechanism 13 reciprocates. The reciprocating movement of the delivery mechanism 17 is performed by a crank mechanism 107 different from the crank mechanism 98 of the bag opening expanding mechanism 13.

The horizontal rail 92 is fitted with a slider 108 for a delivery mechanism, and a mounting plate 109 is attached to the slider 108. A long arm 66 is horizontally attached to the mounting plate 109, and a clip is attached to the tip of the arm 66. A mechanism 67 is attached. Since the clip mechanism 67 attached to the tip of the arm 66 is the same as that of the first embodiment, the details are omitted.

As described above, the delivery mechanism 17 that has received the bag 6 from the bag opening spreading mechanism 13 is moved in the direction of the disk-shaped rotor 2 along the lateral rail 92 by the crank mechanism 107. Then, when the wrapping bag reaches the rotational trajectory position of the clamp 19 of the clamp arm 18, the clip 69 is opened and the wrapping bag is released when the clamp 19 clamps the upper side portion of the wrapping bag. Then, the crank mechanism 107 rotates in the reverse direction, and the delivery mechanism 17 is returned to the position where the bag 6 is received from the bag opening mechanism 13.

By the series of operations of the bag transport conveyor 5, the bag opening raising mechanism 10, the bag opening expanding mechanism 13, the delivery mechanism 17, and the rotary packaging machine 1, the flat bag becomes a tetra packaging bag.

(Other examples)
In the first embodiment, the packaging bag conveyer 5 is disposed on the extension line 4 of the packaging supply position of the rotary type packaging machine 1, and the flat bag is placed on the extension line 4 while the packaging bag is delivered. It becomes a shape-shaped packaging bag, and the packaging bag 6 is delivered to the clamp arm 18 side of the rotary packaging machine 1.

On the other hand, in the said Example 2, the packaging bag conveyance conveyor 5 is arrange | positioned in the position of the rotary type packaging machine 1 at right angles to the extension line 4 of the packaging bag supply position, The flat bag becomes a tetra-shaped packaging bag while being delivered to the rotary packaging machine at a right angle.

However, the present invention is not limited to the delivery of the packaging bag in a straight line or at a right angle between the packaging supply mechanism 5 and the rotary packaging machine 1, but the delivery angle of the rotary packaging machine 1 of the packaging bag 6. May be changed as long as there is no hindrance. That is, the bag transport conveyor 5 is arranged at the peripheral portion of the bag supply position of the rotary packaging machine 1, and the bag transport conveyor 5, the bag opening upright mechanism 10, the bag opening expanding mechanism 13, and the delivery mechanism 17 are arranged. The arrangement may be changed.

In the first and second embodiments, the delivery mechanism 17 delivers the packaging bag 6 to the clamp arm 18 side of the rotary packaging machine by holding the bag mouth 12 of the packaging bag 6 held by the bag opening expansion mechanism 13 from above. However, the delivery mechanism 17 may be eliminated and the packaging bag 6 may be delivered directly from the bag opening mechanism 13 to the clamp 19.

Further, the packaging opening raising mechanism 10, the bag opening widening mechanism 13, and the delivery mechanism 17 are made into one unit, separated from the packaging transport conveyor 5, and directly connected to the rotary packaging machine. This makes it possible to fill a flat bag with an article to be packaged. The power source of the unit is independent, and the unit and other mechanisms are electronically controlled.

INDUSTRIAL APPLICABILITY The present invention is useful for, for example, a packaging machine in which a package is continuously filled in a tetra-shaped packaging bag using a rotary packaging device.

DESCRIPTION OF SYMBOLS 1 Rotary type packaging machine, 2 disk type rotor, 3 packaging supply position, 4 extension line, 5 packaging transport conveyor, 6 packaging (flat bag), 7 operation part, 8 operation part, 9 rubber belt, 10 packaging opening Standing mechanism, 11 bag lifting mechanism, 11A bag lifting suction cup, 12 bag opening, 13 bag opening expanding mechanism, 14 (A) spatula, 14 (B) spatula, 15 support block, 16 sealing of bag bottom Edge, 17 Delivery mechanism, 18 Clamp arm, 19 Clamp, 20 Conveyor body, 21 Pulley, 22 Transport motor, 24 Auxiliary belt, 25 Parallel link, 26 Parallel bar, 28 Rear shaft, 29 Lower link, 30 Upper link , 31 Stopper, 32 First horizontal rotation shaft, 33 Rotary arm, 34 Rod, 35 Lifter, 36 One suction cup, 37 Other suction cup, 38 Crankshaft, 9 Pushing piece, 40 Lifter head, 41 Casing, 42 Pole, 43 First vertical rotation shaft, 44 Middle shaft, 45 Lever, 46 Spring, 47 Slide rail, 48 Slider, 49 One bracket, 50 Other bracket, 51 Clamping piece, 52 Block bearing, 53 Support shaft, 54 Coil spring, 55 Rear end piece, 56 Roller, 57 Air cylinder, 58 Pressing lever, 59 Upper rack, 60 Lower rack, 61 Pinion, 62 Link, 63 Long hole, 64 stopper, 65 strut, 66 long arm, 67 clip mechanism, 69 clip, 70 plate, 71 fan-shaped gear, 72 extension part, 73 air cylinder, 74 connecting rod, 75 second vertical rotation shaft , 76 Drive pillar, 77 Drive shaft, 80 Second lateral rotation shaft, 81 Rotation link body, 82 Rotation lock , 83 Upper rotating piece, 84 Lower rotating piece, 85 Auxiliary rod, 86 Contact body, 90 Spatula opening / closing air cylinder, 91 Side frame, 92 Lateral rail, 93 Slider, 94 Mounting plate, 95 Vertical rail, 96 Slider, 97 side plate, 98 crank mechanism, 100 lifting pole, 101 lifting shaft, 102 L-shaped bracket, 104 rotating wheel, 107 crank mechanism, 108 slider, 109 mounting plate.

Claims (6)

A wrapping bag supply mechanism is arranged at the peripheral edge of the wrapping bag supply position of the rotary wrapping machine, and a wrapping bag opening upright mechanism is provided for opening the wrapping bag of the wrapping bag supply mechanism with the bag mouth side up. ,
Insert a pair of spatulas into the open bag mouth of the standing bag, and expand the spatula in the direction that the bag mouth intersects the sealing edge of the bag bottom of the bag, while the rotary packaging machine side Equipped with a bag opening widening mechanism approaching
A packaging machine for tetra-packaging bags. Place the wrapping bag supply mechanism on the radial extension line connecting the wrapping bag supply position of the wrapping machine from the center of the disk type rotor of the rotary wrapping machine, and place the wrapping bag of the wrapping bag supply mechanism on the bag mouth side. Equipped with a pouch opening raising mechanism that opens up and stands up,
Insert a pair of spatulas into the open bag mouth of the standing bag, and expand the spatula in the direction that the bag mouth intersects the sealing edge of the bag bottom of the bag, while the rotary packaging machine side Equipped with a bag mouth opening mechanism
A packaging machine for a tetra packaging bag according to claim 1. In the rotary wrapping machine, the wrapping bag supply mechanism is disposed at a position perpendicular to the radial extension line connecting the wrapping bag supply position of the wrapping machine from the center of the disk type rotor, and the wrapping bag of the wrapping bag supply mechanism is It is equipped with a sachet opening erecting mechanism that opens and erects with the bag mouth side up,
Insert a pair of spatulas into the open bag mouth of the standing bag, open the spatula in the direction that the bag mouth intersects the sealing edge of the bag bottom, and clamp the rotary packaging machine With a bag opening mechanism that moves to the arm side,
A packaging machine for a tetra packaging bag according to claim 1. 4. The delivery device according to claim 1, further comprising a delivery mechanism that sandwiches the bag mouth of the bag held by the bag mouth spreading mechanism from above and delivers the bag to the clamp arm side of the rotary type packaging machine. Tetra packaging bag packaging machine. 5. The tetra bag according to claim 4, wherein the bag opening mechanism, the bag opening mechanism, and the delivery mechanism are separated from the bag transport conveyor into a single unit, and the bag supply mechanism can be directly joined to the rotary packaging machine. Packaging machine for packaging bags. Between the delivery of the rotary packaging machine and the bag supply mechanism such as a bag transport conveyor or bag box, the bag mouth is expanded in a direction crossing the sealing edge at the bag bottom of the bag. Thus, in the process of delivering the wrapping bag to the rotary wrapping machine, the tetra wrapping bag manufacturing method in which the wrapping bag has a tetra shape.

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