JP2023117814A - Vertical bag-making filling and packaging machine - Google Patents

Abstract

To prevent meandering travel by compensating for a difference in a length of both sides in a width direction of a packaging material due to use of a hard-to-stretch packaging material and a path of a portion corresponding to both sides in the width direction of a former packaging material, and improve bag productivity while ensuring quality.SOLUTION: In a vertical bag-making filling and packaging machine 1, a former 4 has a tubular part 32, a pair of side guide parts 34, a back guide part 36, and a first base part 38, and a wrap portion L is formed by overlapping both side edges of a packaging material W. The vertical bag-making filling and packaging machine comprises: a pair of backing guide members 40 that guides both side edges of the packaging material W to form the wrap portion L at a position facing each peripheral side edge 32a of the tubular part 32; and a guide position adjustment mechanism 42 that is provided on a first table 22 and raises and lowers each backing guide member 40, independently adjusts a vertical position of each backing guide member 40, slides each backing guide member 40 in a horizontal direction independently of a vertical position adjustment, to adjust a separation distance D of each back tension guide member 40.SELECTED DRAWING: Figure 5

Description

TECHNICAL FIELD The present invention relates to a vertical form-fill-sealing machine, and more particularly to a vertical form-filling-sealing machine for manufacturing bags using a non-stretchable wrapping material.

In Patent Document 1, a band-shaped film converged into a cylindrical shape by a former is intermittently fed out along the outer periphery of a forming tube (bag-making tube) to form a tubular bag, and an object to be packaged in this bag ( A bag-making, filling and packaging machine that automatically performs filling and packaging of filling materials is disclosed. The forming cylinder and the former are each formed by dividing a hollow cylinder into two halves in the longitudinal direction. is configured to be variable.

Also, a pair of backing guide members are provided adjacent to the gap between the divided halves of the former for feeding the strip film while overlapping both end edges thereof. The pair of backing guide members are adapted so that the spacing between the respective backing guide members can be adjusted correspondingly as the spacing between the divided halves of the former is adjusted (see FIG. 2 of the publication). Also, each backing guide member does not need to be adjusted correspondingly with the spacing adjustment of each halves of the former, i.e., the spacing of each halves of the former need not be adjusted accordingly. However, there is also disclosed a form in which the intervals between the backing guide members are kept constant (see FIG. 7 of the publication).

In the packaging machine described in Patent Document 1, if it is desired to increase the filling amount of the filling material in the bag, the width of the bag must be increased. It is a solution to the problem that it must be By making it possible to adjust the intervals between the divided halves of the bag-making tube and the former, it is possible to eliminate the trouble of replacing the bag-making tube and reduce the equipment investment for constantly preparing bag-making tubes with different outer diameters. At the same time, it has the advantage of being able to quickly respond to diverse user needs.

Japanese Patent Publication No. 2-20489

In recent years, there has been a growing momentum to promote environmental consideration and resource conservation on a global scale, such as the SDGs (Sustainable Development Goals). Attention is focused on packages that reduce Many of the conventional packaging materials are sheet-like films, which are mainly made of petroleum-derived plastic materials. is done.

A film packaging material made of a plastic material is thin and flexible, while a paper packaging material is a sheet in which fibers such as wood pulp are entwined, and is more difficult to stretch than a film packaging material. Due to errors in the length and thickness of the packaging material due to manufacturing, distortion due to storage conditions, and the shape of the former, the length of the packaging material and the path of the part corresponding to both sides of the former packaging material are different on both sides in the width direction of the packaging material. I have something to do.

When traveling along the former and bag-making tube, the film packaging material stretches along the former, etc., so that the length of the packaging material on both sides in the width direction of the packaging material and the path corresponding to both sides of the former packaging material are different. can be eliminated along the former and the bag-making tube. However, since the stretch-resistant packaging material is difficult to stretch, the length of the packaging material on both sides in the width direction of the packaging material and the paths of the portions of the former corresponding to both sides of the packaging material cannot be resolved. It may meander and run. Meandering travel of the packaging material leads to poor quality of the manufactured bags and frequent erroneous stoppages of the packaging machine, resulting in a decrease in bag productivity.

On the other hand, the packaging material traveling along the former is formed into a tubular packaging material by surrounding the outer peripheral surface of the bag-making tube, and both side edges of the packaging material are formed at positions facing the peripheral side edges of the tubular portion. overlapped with each other to form a wrap portion. Each backing guide member described above guides the side edges of the wrapping material to form this wrap portion. In order to properly form the wrap portion, it is necessary to adjust the separation distance between the backing guide members. Experiments by the inventors of the present application have revealed that it is possible to effectively suppress the

However, in the packaging machine described in Patent Document 1, only the separation distance between the backing guide members can be adjusted incidentally as the gaps between the bag-making tube and the divided halves of the former are adjusted. In addition, when trying to adjust the distance between the backing guide members, the distance between the divided halves of the bag-making tube and the former is also adjusted. Therefore, it is difficult to compensate for the difference in the length of the packaging material on both sides in the width direction of the packaging material and the path of the portion of the former corresponding to both sides of the packaging material.

The present invention has been made in view of such problems, and the length on both sides in the width direction of the packaging material due to the use of a difficult-to-stretch packaging material and the portions of the former corresponding to both sides of the packaging material. To provide a vertical form-fill-seal machine capable of compensating for differences in paths to prevent meandering and improving the productivity of bags while ensuring the quality of the bags.

In order to achieve the above object, a vertical form-fill-seal packaging machine according to one embodiment forms a hard-to-stretch packaging material guided along a former into a cylindrical packaging material on the outer peripheral surface of a bag-making tube, A vertical sealing portion is formed along the longitudinal direction of the tubular packaging material while feeding the tubular packaging material in the longitudinal direction of the bag-making tube, and a predetermined interval is formed in the longitudinal direction of the tubular packaging material below the bag-making tube. While forming the horizontal seal part with the A packaging machine comprising a first table for supporting a former, the former having a cylindrical portion having a pair of circumferential side edges facing each other in the circumferential direction, and each circumferential side edge of the cylindrical portion being positioned on the cylindrical portion. A pair of side guide portions that are folded radially outward to form a collar-like shape, a rear guide portion that is formed by connecting the upper portions of the respective side guide portions in the circumferential direction of the tubular portion, and a tubular shape. and a first base portion formed at the lower end portion of the tubular portion, extending in the circumferential direction, and connected to the first table. After passing through the gaps of the peripheral side edges, the outer peripheral surface of the bag-making tube is surrounded to form a tubular packaging material, and the both side edges of the packaging material are formed at positions facing the peripheral side edges of the tubular portion. A pair of backing guide members for guiding both side edges of the packaging material to form the wrap portions at positions facing the circumferential side edges of the cylindrical portion, and a first table; Each backing guide member is raised and lowered to independently adjust the vertical position of each backing guide member, and each backing guide member is slid horizontally independently of the vertical position adjustment, and a guide position adjusting mechanism for adjusting the distance between the backing guide members.

It is possible to prevent the packaging material from lifting from the former due to the use of the non-stretchable packaging material, and to prevent meandering running, thereby improving the productivity of the bag while ensuring the quality of the bag.

1 is a perspective view of a vertical form-fill-seal machine according to an embodiment; FIG. It is a front view of a former. FIG. 3 is a side view of a former; 1 is a perspective view of a bag-making tube and a former; FIG. 4 is a front view of each backing guide member and a guide position adjusting mechanism; FIG. FIG. 4 is a front view of the bag-making tube and the former in which the packaging material is set; FIG. 4 is a front view of the bag-making tube and the former after adjustment by the guide position adjustment mechanism; FIG. 4 is a side view of the departure restricting mechanism; FIG. 5 is a perspective view of the first base portion of the cylindrical portion of the former as seen from the rear side of FIG. 4; It is sectional drawing which looked at the former|former inclination adjustment mechanism from the front. It is a perspective view of a clamp and a second table. It is sectional drawing which looked at the tube inclination adjustment mechanism from the front.

FIG. 1 shows a perspective view of a vertical form-fill-seal machine 1 according to an embodiment. This vertical bag-making, filling and packaging machine (hereinafter also simply referred to as packaging machine) 1 includes a bag-making tube 2 that extends vertically. A hopper (not shown) is connected to the upper end of the bag-making tube 2, and a filler such as powder or grain is supplied through the hopper. A filling and feeding device (not shown) is arranged above the packaging machine 1, and the filling and feeding device feeds a predetermined amount of filling into the bag-making tube 2 via a hopper.

A former 4 is attached above the bag-making tube 2 and below the hopper, and a packaging material delivery path extends from the former 4 to a packaging material reel 6 . A packaging material W is fed out from the packaging material reel 6 via a plurality of rollers 8 . The packaging material W is a non-stretchable packaging material, for example, a sheet-like paper material used for the exterior of the bag P and a sheet-like heat seal material used for the interior of the bag are laminated and bonded. It is a paper packaging material. The packaging material W fed out from the packaging material reel 6 is guided along the packaging material feeding path and led to the outer circumference of the bag-making tube 2 along the former 4 .

The packaging material W guided along the former 4 is formed into a tubular shape surrounding the outer peripheral surface 2a of the bag-making tube 2, and this tubular packaging material Wc is guided downward along the bag-making tube 2. As shown in FIG. Further, when passing through the former 4, both side edges of the cylindrical packaging material Wc are overlapped with each other in a predetermined form, for example, a form of joining hands to form a wrap portion L. As shown in FIG. The packaging machine 1 also includes a packaging material delivery device. The packaging material delivery device has a pair of packaging material feeders 10 .

The packaging material feeders 10 are arranged on both sides of the outer circumference of the bag-making tube 2 below the former 4 . Each packaging material feeder 10 has an endless suction belt 12 to which the tubular packaging material Wc is attracted. In this suction state, the suction belt 12 travels in one direction, so that the tubular packaging material Wc is fed downward along the bag-making tube 2 .

A vertical sealer 14 that can be opened and closed is arranged near the bag-making tube 2 . The vertical sealer 14 is disposed between the pair of packaging material feeders 10 when viewed in the circumferential direction of the bag-making tube 2, heat seals the wrap portion L of the tubular packaging material Wc, and adheres both side edges to each other for vertical sealing. A portion Sv is formed in the bag P. As a result, after passing through the vertical sealer 14, the cylindrical packaging material Wc is completely closed at both side edges.

A horizontal sealer 16 that can be opened and closed is arranged below the bag-making tube 2 . The lateral sealer 16 has a pair of heater blocks 16a, 16b. A heater 18 is built in each heater block 16a, 16b. Each heater block 16a, 16b extends in the horizontal direction, which is the direction across the cylindrical packaging material Wc, and contacts and separates from each other in the radial direction of the bag-making tube 2 within the horizontal plane. Thereby, the opening and closing operation of the horizontal sealer 16 is performed.

The heater blocks 16a and 16b sandwich the cylindrical packaging material Wc from the front and rear by the closing operation of the horizontal sealer 16, thereby forming a horizontal sealing portion Sh on the cylindrical packaging material Wc. The heater block 16a, which is one of the heater blocks 16a and 16b, holds a knife 20 for cutting the packaging material. A blade receiving groove 21 for receiving the knife 20 is formed in the heater block 16b, which is the other of the heater blocks 16a and 16b. As the horizontal sealer 16 closes, the knife 20 slides horizontally toward the blade receiving groove 21 and pushes the horizontal seal portion Sh to cut it.

A series of operations of the packaging machine 1 configured in this manner will be described below. The packaging machine 1 forms the hard-stretchable packaging material W guided along the former 4 into a tubular packaging material Wc on the outer peripheral surface 2 a of the bag-making tube 2 , and the tubular packaging material Wc is formed into the bag-making tube 2 . The vertical sealer 14 forms a vertical seal portion Sv along the longitudinal direction of the tubular packaging material Wc while extending it in the longitudinal direction, that is, downward. Next, below the bag-making tube 2, a horizontal sealer 16 forms a horizontal seal portion Sh at a predetermined interval in the longitudinal direction of the tubular packaging material Wc. On the other hand, the formation of the lateral seal portions Sh and the filling of the filling material into the cylindrical packaging material Wc are alternately performed, and at the same time, the knife 20 cuts the cylindrical packaging material Wc at the lateral seal portions Sh. Thereby, the bag P filled with the filler is manufactured.

Here, the packaging machine 1 of this embodiment includes a first table 22 that supports the former 4, clamps 24 that support the outer peripheral surface 2a of the bag-making tube 2, and a second table 26 that supports the clamps 24. ing. The first and second tables 22 and 26 are connected via two vertically extending connecting members 28 . Further, a deviation restricting mechanism 30 for restricting deviation of the packaging material W is attached to the inclined side edge 4a of the former 4. As shown in FIG.

2 shows a front view of the former 4, and FIG. 3 shows a side view of the former 4. As shown in FIG. The former 4 includes a tubular portion 32 , a pair of side guide portions 34 , a rear guide portion 36 and a first base portion 38 . The cylindrical portion 32 extends upward in a cylindrical shape and has a pair of peripheral side edges 32a facing each other with a gap G in the circumferential direction. The pair of side guide portions 34 are formed in a collar shape by folding back the peripheral side edges 32a of the tubular portion 32 outward in the radial direction of the tubular portion 32 .

The rear guide portion 36 is formed by connecting the upper portions of the side guide portions 34 in the circumferential direction of the cylindrical portion 32 . The first base portion 38 is formed at the lower end portion of the tubular portion 32 , extends in the circumferential direction of the tubular portion 32 , and is connected to the first table 22 . The tubular portion 32 is formed with notches 32b obtained by notching the peripheral wall on the opposite side of each peripheral side edge 32a in the radial direction. After passing through the notch 32b into the tubular portion 32, the packaging material W passes through the gaps G between the peripheral side edges 32a and is set along the surfaces of the side guide portions 34 and the back guide portion 36. be.

By forming the notch portion 32b, even the wrapping material W that is difficult to stretch can be easily set on the former 4. As shown in FIG. Further, as shown in FIG. 3, the rear guide portion 36 is inclined upward at a predetermined inclination angle α with respect to the horizontal direction indicated by the dashed line, and the inclination angle α is, for example, 15°. In addition, the rear guide portion of the former of the conventional film packaging machine is inclined downward with a predetermined inclination angle β with respect to the horizontal direction, as indicated by the two-dot chain line in FIG. are doing.

In this embodiment, by forming the back guide portion 36 having the obliquely upward inclination angle α, the movement of the packaging material W from the back guide portion 36 and the side guide portions 34 to the cylindrical portion 32 is gentle. is done in As a result, wrinkles are less likely to occur in the packaging material W running on the former 4, even when the packaging material W is difficult to stretch, and meandering travel of the packaging material W caused by wrinkles in the packaging material W is prevented. be able to.

On the other hand, the packaging material W set on the former 4 travels along the surfaces of the back guide portion 36 and the side guide portions 34, and after passing through the gaps G between the peripheral side edges 32a of the cylindrical portion 32, By surrounding the outer peripheral surface 2a of the bag-making tube 2, the cylindrical packaging material Wc is formed. At the same time, by overlapping both side edges of the packaging material W at opposing positions of the circumferential side edges 32a of the cylindrical portion 32, the lap portion L described above is formed.

4 shows a perspective view of the bag-making tube 2 and the former 4. FIG. The packaging machine 1 includes a pair of backing guide members 40 that guide both side edges of the packaging material W to form the wrap portion L, and a guide position adjusting mechanism 42 that adjusts the position of each backing guide member 40. there is Each backing guide member 40 is arranged at a position facing each peripheral side edge 32 a of the cylindrical portion 32 . The guide position adjusting mechanism 42 is provided on the first table 22 .

FIG. 5 shows a front view of each backing guide member 40 and the guide position adjusting mechanism 42. As shown in FIG. The guide position adjusting mechanism 42 raises and lowers each backing guide member 40, independently adjusts the vertical position of each backing guide member 40, slides each backing guide member 40 in the horizontal direction, and adjusts each backing guide member 40. The separation distance D of the tension guide member 40 is adjusted. The guide position adjusting mechanism 42 can adjust the separation distance D of each backing guide member 40 independently of the vertical position adjustment of each backing guide member 40 . By adjusting the separation distance D of each backing guide member 40, the gap G between each peripheral side edge 32a of the cylindrical portion 32 is substantially adjusted.

Specifically, each backing guide member 40 is a plate that extends vertically at a position facing each peripheral side edge 32 a of the cylindrical portion 32 . The guide position adjusting mechanism 42 includes an adjusting plate 44 , a first bolt insertion hole 46 , a first bolt 48 and a positioning nut 50 for each backing guide member 40 . Each adjustment plate 44 is connected to each backing guide member 40 by welding or the like and extends along the first table 22 . Each adjustment plate 44 may be integrally formed with each backing guide member 40 .

Two first bolt insertion holes 46 are formed in each adjustment plate 44 . Four first bolts 48 are provided, each erected on the first table 22 and inserted through each first bolt insertion hole 46 . More specifically, each first bolt 48 is screwed from below the first table 22 and fixed to the first table 22 by a fixing nut 52 . A cap nut 49 is screwed to the upper end of each first bolt 48 .

Four sets of positioning nuts 50 are provided at positions sandwiching the first table 22 from above and below, and are screwed to the respective first bolts 48 at positions sandwiching the adjustment plates 44 . Here, each first bolt insertion hole 46 is formed as an elongated hole whose longitudinal direction is the horizontal direction in the adjustment plate 44 . Thereby, the guide position adjusting mechanism 42 adjusts the vertical position of each backing guide member 40 independently, and adjusts the vertical position of each backing guide member 40 independently of the adjustment of the vertical position of each backing guide member 40. The separation distance D can be adjusted.

More specifically, the guide position adjustment mechanism 42 releases the adjustment plate 44 from the positioning nuts 50 in each of the backing guide members 40 so that the adjustment plate 44 and the guide member 40 are integrated between the positioning nuts 50 . Allows easy lifting and lowering. In addition, the guide position adjusting mechanism 42 releases the adjustment plate 44 from the positioning nut 50 holding the adjustment plate 44 in each of the backing guide members 40 , so that the adjustment plate 44 and the guide member 40 are integrated with each other in the first bolt insertion hole 46 . allow horizontal sliding.

FIG. 6 shows a front view of the bag-making tube 2 and the former 4 in which the packaging material W is set. FIG. 7 shows a front view of the bag-making tube 2 and the former 4 after being adjusted by the guide position adjusting mechanism 42. FIG. As seen in FIG. 6, the packaging material W floats near the boundary between the right side guide portion 34 and the rear guide portion 36 of the former 4, creating a state in which the packaging material W may meander. In this case, as shown in FIG. 7, the two positioning nuts 50 on the right side in FIG. The clamping of the plate 44 is released.

Next, the adjusting plate 44 and the backing guide member 40 are slid integrally in the horizontal direction as necessary in the first bolt insertion holes 46 on the right side as viewed in FIG. Next, the upper two positioning nuts 50 described above are screwed upward to move the adjustment plate 44 upward along each first bolt 48 . Then, the adjusting plate 44 is held between the positioning nuts 50 again to position the adjusting plate 44 and the backing guide member 40 . As a result, as shown in FIG. 7, the right backing guide member 40 is positioned above the left backing guide member 40, and the lifting of the packaging material W is eliminated.

FIG. 8 shows a side view of the departure restriction mechanism 30. As shown in FIG. The deviation restricting mechanism 30 has a clip 54 , three second bolts 56 and a restricting plate 58 . The clip 54 has a U-shaped cross section and is fitted to the inclined side edge 4 a of the former 4 . The inclined side edge 4 a is a side edge that is continuously inclined on both sides of the tubular portion 32 in the radial direction of the side guide portion 34 and the rear guide portion 36 of the former 4 .

Also, three bolt holes 60 are formed in the clip 54 . A second bolt 56 is screwed into each bolt hole 60 . The regulation plate 58 is interposed between the tip of each second bolt 56 and the inclined side edge 4a. The deviation restricting mechanism 30 clamps the inclined side edge 4a between the inner side surface 54a of the clip 54 and the restricting plate 58 pressed by the tip of each second bolt 56. As shown in FIG.

The contact of the side edge of the packaging material W with the regulating plate 58 restricts the deviation of the packaging material W from the inclined side edge 4a. On the other hand, by screwing out the second bolts 56, the clamping of the clip 54 and the regulation plate 58 against the inclined side edge 4a is released, allowing the clip 54 to slide along the inclined side edge 4a. As a result, the deviation restricting mechanism 30 can be moved to a desired location on the inclined side edge 4a.

FIG. 9 shows a perspective view of the first base portion 38 of the cylindrical portion 32 of the former 4 as seen from the rear side of FIG. The packaging machine 1 includes a former inclination adjusting mechanism 62 that connects the first base 38 to the first table 22 and adjusts the inclination of the former 4 in the vertical direction. Four former inclination adjusting mechanisms 62 are provided in the circumferential direction of the first base portion 38 . A plurality of protrusions 64 are formed on the outer peripheral edge of the first base portion 38 , and scribe lines 66 are formed on the upper surface of the first table 22 at locations corresponding to the positions of the protrusions 64 .

The marking line 66 may be a mark drawn on the upper surface of the first table 22 or a long groove machined on the upper surface of the first table 22 . The projection 64 and the marking line 66 serve as marks for properly assembling the former 4 to the first table 22, and the former 4 is arranged and assembled at a position where the projection 64 matches the marking line 66. - 特許庁As a result, the former 4 can be assembled easily and accurately, so that the assembling efficiency of the packaging machine 1 is improved.

FIG. 10 shows a cross-sectional view of the former inclination adjusting mechanism 62 viewed from the front. The former inclination adjusting mechanism 62 adjusts the inclination of the former 4 by a so-called push/pull bolt mechanism using a first push bolt 68 and a first pull bolt 70 . The first push bolt 68 is screwed into the first base portion 38 and abuts the first table 22 at its tip. A nut 72 for positioning the first push bolt 68 is screwed onto the first push bolt 68 . In addition, as shown in FIG. 9 , each former inclination adjusting mechanism 62 includes one or two first push bolts 68 .

The first pull bolt 70 is inserted through a second bolt insertion hole 74 formed in the first base portion 38 and screwed into the first table 22 . In the state shown in FIG. 10 , the tilt of the former 4 can be adjusted via the first base portion 38 by screwing the first pull bolt 70 away from the first table 22 . Next, while the tip of each first push bolt 68 is in contact with the first table 22, each first push bolt 68 is screwed forward or backward with respect to the first base portion 38, whereby the first base portion 38 is moved. Inclination adjustment of the former 4 is performed via.

After adjusting the inclination of the former 4 , the first pull bolt 70 is screwed toward the first table 22 and the head of the first pull bolt 70 is brought into contact with the first base portion 38 . Further, each first push bolt 68 is positioned with respect to the first base portion 38 by screwing the nut 72 of each first push bolt 68 toward the first base portion 38 and bringing it into contact with the first base portion 38 . . Thereby, the former 4 is fixed at a desired inclination with respect to the first table 22 .

11 shows a perspective view of the clamp 24 and the second table 26. FIG. Four second base portions 76 are formed at the lower end portion of the clamp 24 so as to protrude outward in the radial direction of the bag-making tube 2 . Clamp 24 is connected to second table 26 at each second base 76 . The packaging machine 1 includes a tube inclination adjusting mechanism 78 that connects the second base 76 to the second table 26 and adjusts the inclination of the bag-making tube 2 in the vertical direction. A tube tilt adjustment mechanism 78 is provided on each second base portion 76 .

FIG. 12 shows a cross-sectional view of the tube tilt adjustment mechanism 78 viewed from the front. The tube inclination adjustment mechanism 78 adjusts the inclination of the bag-making tube 2 by a push/pull bolt mechanism similar to the former inclination adjustment mechanism 62 described above, which includes the second push bolt 80 and the second pull bolt 82 . The second push bolt 80 is screwed into the second base portion 76 and abuts on the second table 26 at its tip end. A nut 84 for positioning the second push bolt 80 is screwed onto the second push bolt 80 . In addition, as shown in FIG. 11 , each tube tilt adjustment mechanism 78 includes two second push bolts 80 .

The second pull bolt 82 is inserted through a third bolt insertion hole 86 formed in the second base portion 76 and screwed into the second table 26 . In the state shown in FIG. 12 , the tilt of the bag-making tube 2 can be adjusted via the second base portion 76 by screwing the second pull bolt 82 away from the second table 26 . Next, while the tip of each second push bolt 80 is in contact with the second table 26 , each second push bolt 80 is screwed forward or backward with respect to the second base portion 76 to move the second base portion 76 . The inclination of the bag-making tube 2 is adjusted through the hole.

After adjusting the inclination of the bag-making tube 2 , the second pull bolt 82 is screwed toward the second table 26 to bring the head of the second pull bolt 82 into contact with the second base portion 76 . Further, each second push bolt 80 is positioned with respect to the second base portion 76 by screwing the nut 84 of each second push bolt 80 toward the second base portion 76 and bringing it into contact with the second base portion 76 . . As a result, the bag-making tube 2 is fixed at a desired inclination with respect to the second table 26 .

As described above, the vertical form-fill-seal machine 1 of the embodiment is provided with a mechanism that enables various adjustments, thereby reducing the possibility of the packaging material W, especially the meandering movement, caused by using the packaging material W that is difficult to stretch. Problems can be prevented, and the productivity of the bags P can be improved while ensuring the quality of the bags P. Specifically, the packaging machine 1 includes a pair of backing guide members 40 and a guide position adjusting mechanism 42 , and each backing guide member 40 faces each peripheral side edge 32 a of the cylindrical portion 32 of the former 4 . Both side edges of the packaging material W are guided so as to form the wrap portion L in the bag P at the position.

Further, the guide position adjusting mechanism 42 is provided on the first table 22 of the former 4, lifts and lowers each backing guide member 40, independently adjusts the vertical position of each backing guide member 40, and adjusts each backing guide member 40 independently. The tension guide members 40 are slid in the horizontal direction independently of the vertical position adjustment to adjust the separation distance D between the back tension guide members 40.例文帳に追加Since the guide position adjustment mechanism 42 can independently adjust the vertical position of each backing guide member 40 and the adjustment of the separation distance D, the length of the packaging material W on both sides in the width direction and the former 4 It is possible to compensate for the difference in the paths of the portions corresponding to both sides of the packaging material W. Therefore, it is possible to effectively prevent the meandering movement of the packaging material W caused by the floating of the packaging material W on the former 4 or the like.

Specifically, the guide position adjusting mechanism 42 has an adjusting plate 44, a first bolt insertion hole 46, a first bolt 48, and a positioning nut 50 in each of the backing guide members 40. is an elongated hole in the adjusting plate 44 whose longitudinal direction is the horizontal direction. As a result, the adjustment of the vertical position of each backing guide member 40 and the adjustment of the separation distance D can be easily and independently performed with a simple mechanism.

More specifically, by releasing the adjustment plate 44 from the positioning nuts 50 in each of the backing guide members 40, the adjustment plate 44 and the backing guide member 40 can be raised and lowered integrally between the positioning nuts 50. Permissible. Also, the adjustment plate 44 and the backing guide member 40 are allowed to slide integrally in the horizontal direction in the first bolt insertion holes 46 .

Moreover, the packaging machine 1 is attached to at least one of the inclined side edges 4a of the side guide portions 34 and the rear guide portion 36 of the former 4, and restricts the deviation of the side edges of the packaging material W from the inclined side edges 4a. A departure control mechanism 30 is provided. As a result, meandering travel of the packaging material W caused by deviation of the packaging material W from the former 4 can be prevented.

Specifically, the deviation restricting mechanism 30 has a clip 54, a bolt hole 60, a second bolt 56, and a restricting plate 58, and when the side edge of the packaging material W comes into contact with the restricting plate 58, the side edge of the packaging material W moves away from the inclined side edge 4a. deviation of the packaging material W is regulated. As a result, deviation of the packaging material W can be easily restricted with a simple mechanism.

On the other hand, by screwing out the second bolts 56, the clamping of the clip 54 and the regulation plate 58 against the inclined side edge 4a is released, allowing the clip 54 to slide along the inclined side edge 4a. As a result, the regulation position of the traveling packaging material W can be adjusted to easily and quickly set the deviation regulation mechanism 30 to a position corresponding to the individual state of the packaging material W, the state of the former 4, and the like.

The packaging machine 1 also includes a former inclination adjusting mechanism 62 that connects the first base portion 38 of the former 4 to the first table 22 and adjusts the inclination of the former 4 in the vertical direction. As a result, the inclination of the former 4 can be easily adjusted, so that the assembling efficiency of the packaging machine 1 is improved, and meandering traveling of the packaging material W caused by the inclination of the former 4 can be prevented.

Specifically, the former inclination adjustment mechanism 62 has a first push bolt 68, a second bolt insertion hole 74, and a first pull bolt 70. By screwing the first pull bolt 70 away from the first table 22, The inclination of the former 4 can be adjusted via the first base portion 38 . Further, by screwing or retreating the first push bolt 68 with respect to the first base portion 38 while the tip of the first push bolt 68 is in contact with the first table 22 , the former can be moved through the first base portion 38 . 4 tilt adjustment. This makes it possible to easily adjust the inclination of the former 4 with a simple mechanism.

The packaging machine 1 also includes a tube tilt adjustment mechanism 78 that connects the second base portion 76 of the clamp 24 to the second table 26 and adjusts the tilt of the bag-making tube 2 in the vertical direction. As a result, the inclination of the bag-making tube 2 can be easily adjusted, so that the ease of assembly of the packaging machine 1 can be improved, and meandering travel of the packaging material W caused by the inclination of the bag-making tube 2 can be prevented. can.

Specifically, the tube tilt adjustment mechanism 78 has a second push bolt 80, a third bolt insertion hole 86, and a second pull bolt 82. By screwing the second pull bolt 82 away from the second table 26, The inclination of the bag-making tube 2 can be adjusted via the second base portion 76 . Further, in a state where the tip of the second push bolt 80 is in contact with the second table 26 , the second push bolt 80 is screwed forward or backward with respect to the second base portion 76 , so that the second push bolt 80 is pushed through the second base portion 76 . The inclination of the bag tube 2 is adjusted. This makes it possible to easily adjust the inclination of the bag-making tube 2 with a simple mechanism.

Although the description of the embodiments is finished above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. For example, the packaging machine 1 can be used to manufacture a bag P using a difficult-to-stretch packaging material other than a paper packaging material. In addition, in the guide position adjusting mechanism 42, each adjusting plate 44 is formed with two first bolt insertion holes 46, four first bolts 48 are provided, and the positioning nuts 50 are positioned to sandwich the first table 22 from above and below. , but these numbers can be changed.

Also, in the deviation restricting mechanism 30, the clip 54 is provided with three bolt holes 60 and three second bolts 56, but these numbers can be changed. A plurality of deviation restricting mechanisms 30 may be attached to the inclined side edges 4a, or may be attached to the inclined side edges 4a on both sides of the former 4, respectively.

At least one first push bolt 68 and at least one first pull bolt 70 may be provided in the former inclination adjusting mechanism 62 . Also, the number of former inclination adjusting mechanisms 62 provided on the first base portion 38 can be changed. At least one second push bolt 80 and at least one second pull bolt 82 may be provided in the tube inclination adjustment mechanism 78 . Also, the number of tube tilt adjusting mechanisms 78 provided on the second base portion 76 can be changed.

REFERENCE SIGNS LIST 1 Vertical bag-making, filling and packaging machine 2 Bag-making tube 2a Outer peripheral surface 4 Former 4a Inclined side edge 22 First table 24 Clamp 26 Second table 30 Deviation regulation mechanism 32 Cylindrical part 32a Peripheral side edge 34 Side guide part 36 Rear guide part 38 first base portion 40 backing guide member 42 guide position adjustment mechanism 44 adjustment plate 46 first bolt insertion hole 48 first bolt 50 positioning nut 54 clip 58 regulation plate 60 bolt hole 62 former inclination adjustment mechanism 68 first push bolt 70 first 1st draw bolt 74 2nd bolt insertion hole 76 2nd base 78 tube inclination adjustment mechanism 80 2nd push bolt 82 2nd draw bolt 86 3rd bolt insertion hole D Separation distance G Gap L Lap part P Bag Sv Vertical seal part Sh Horizontal Seal part W Packaging material Wc Cylindrical packaging material

Claims (12)

The hard-stretchable packaging material guided along the former is formed into a tubular packaging material on the outer peripheral surface of the bag-making tube, and the tubular packaging material is fed out in the longitudinal direction of the bag-making tube. A vertical seal portion is formed along the longitudinal direction of the material, and a horizontal seal portion is formed below the bag-making tube at a predetermined interval in the longitudinal direction of the cylindrical packaging material. A vertical bag-making, filling and packaging machine that alternately forms a part and fills the interior of the cylindrical packaging material with a filling to manufacture a bag filled with the filling,
A first table that supports the former,
The former is
a tubular portion having a pair of circumferential side edges facing each other in the circumferential direction;
a pair of side guide portions formed in a collar shape by respectively folding back the peripheral side edges of the tubular portion outward in the radial direction of the tubular portion;
a rear guide portion formed by connecting the upper portion of each of the side guide portions in the circumferential direction of the cylindrical portion;
a first base formed at the lower end of the tubular portion, extending in the circumferential direction, and connected to the first table;
The packaging material travels along the back guide portion and the side guide portions, passes through the gaps between the peripheral side edges of the cylindrical portion, and then surrounds the outer peripheral surface of the bag-making tube. A wrap portion is formed in the tubular packaging material and is formed by overlapping both side edges of the packaging material at positions facing the peripheral side edges of the tubular portion,
a pair of backing guide members for guiding the side edges of the packaging material to form the wrap portion at positions facing the peripheral side edges of the cylindrical portion;
provided on the first table for lifting and lowering each of the backing guide members to independently adjust the vertical position of each of the backing guide members, and independently of the vertical position adjustment of each of the backing guide members and a guide position adjusting mechanism for adjusting the separation distance between the backing guide members by sliding the backing guide members horizontally. The guide position adjusting mechanism, in each of the backing guide members,
a horizontally extending adjustment plate connected to the backing guide member;
a first bolt insertion hole formed in the adjustment plate;
a first bolt erected on the first table and inserted through the first bolt insertion hole;
a positioning nut screwed onto each of the first bolts at a position where the adjusting plate is sandwiched;
2. The vertical form-fill-seal machine according to claim 1, wherein said first bolt insertion hole is an elongated hole whose longitudinal direction is the horizontal direction in said adjustment plate. The guide position adjusting mechanism releases the adjusting plate from the positioning nut in each of the backing guide members, so that the adjusting plate and the backing guide member are integrated between the positioning nuts. 3. The vertical form-fill-seal machine according to claim 2, wherein said adjusting plate and said backing guide member are allowed to slide integrally in the horizontal direction in said first bolt insertion hole. each of the side guide portions and the back guide portion has an inclined side edge continuously inclined on both sides in the radial direction;
4. The vertical product according to any one of claims 1 to 3, further comprising a deviation restricting mechanism attached to at least one of said inclined side edges to restrict deviation of said side edges of said packaging material from said inclined side edges. Bag filling and packaging machine. The departure regulation mechanism is
a clip having a U-shaped cross section that is fitted into the inclined side edge;
a bolt hole formed in the clip;
a second bolt screwed into the bolt hole;
5. The vertical form-fill-seal machine according to claim 4, further comprising a regulating plate interposed between the tip of said second bolt and said inclined side edge. The deviation restricting mechanism clamps the inclined side edge between the inner side surface of the clip and the restricting plate pressed against the tip of the second bolt, thereby preventing the side of the packaging material from the inclined side edge. While restricting deviation of the edge, by screwing back the second bolt, the clamping of the clip and the regulation plate with respect to the inclined side edge is released, and the clip is allowed to slide along the inclined side edge. 6. The vertical form-fill-seal packaging machine according to claim 5. 7. The vertical form-fill-seal machine according to any one of claims 1 to 6, further comprising a former inclination adjusting mechanism that connects said first base to said first table and adjusts an inclination of said former in a vertical direction. . The former inclination adjustment mechanism is
a first push bolt that is screwed into the first base portion and whose tip end abuts the first table;
a second bolt insertion hole formed in the first base;
8. The vertical form-fill-seal machine according to claim 7, further comprising a first pull bolt inserted through said second bolt insertion hole and screwed into said first table. The former tilt adjustment mechanism enables tilt adjustment of the former through the first base portion by screwing the first pull bolt away from the first table, and the tip of the first push bolt is adjusted to the first table. 10. The inclination of the former is adjusted via the first base portion by screwing or retracting the first push bolt with respect to the first base portion in a state of contact with one table. vertical form-fill-seal machine. a clamp that sandwiches and supports the outer peripheral surface of the bag-making tube;
a second table supporting the clamp;
a second base formed at the lower end of the clamp and connected to the second table;
The vertical bag-making apparatus according to any one of claims 1 to 9, further comprising a tube inclination adjusting mechanism that connects the second base to the second table and adjusts the inclination of the bag-making tube in the vertical direction. Filling and packaging machine. The tube tilt adjustment mechanism is
a second push bolt that is screwed into the second base portion and whose tip end abuts the second table;
a third bolt insertion hole formed in the second base;
11. The vertical form-fill-seal machine according to claim 10, further comprising a second pull bolt inserted through said third bolt insertion hole and screwed onto said second table. The tube tilt adjustment mechanism enables tilt adjustment of the bag-making tube through the second base portion by screwing the second pull bolt away from the second table, and the tip of the second push bolt is Inclination of the bag-making tube is adjusted through the second base portion by screwing or retracting the second push bolt with respect to the second base portion while being in contact with the second table. Item 12. The vertical form-fill-seal machine according to item 11.

Images