JP2012061724A - In-line edge cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce waste of a packaging material by preventing generation of projection resulting from a gap between a separating position and an edge cutting position of a packaging bag without preparing a surplus part.SOLUTION: An in-line edge cut device 1 which is arranged being tied with a bag making line PL, or arranged in a filling packaging line, and cuts the edges of a packaging bag P which are made within the bag making line PL or the filling packaging line includes: a conveyor 21 which conveys the packaging bag P which is separated in a bag feeding direction and the direction which intersects the bag feeding direction of the bag making line, in a state of gaps D1 and D2 opened by edges of the separated sides; and an edge cutter 22 which contains the edges of separated side of the packaging bags P adjoined on the conveyor 21 and the gaps between those edges in the cut off range, and cuts the edges.

Description

  This invention is connected to a bag making line or arranged in a filling and packaging line, and the corners (corners) and side edges of packaging bags made in the bag making line or filling and packaging line. In-line edge cutting device that cuts a portion into an arc (R) shape, a notch shape, and the like, and in particular, the occurrence of protrusions due to the deviation between the separation position of the packaging bag and the edge cutting position is not provided. The present invention relates to an inline edge cutting device that can be prevented.

  Connected to the bag making line or placed in the filling and packaging line, and the corners and side edges of packaging bags made in the bag making line or filling and packaging line are arc-shaped or notched Conventionally, for example, an in-line corner cutting device disclosed in Patent Document 1 is known as an in-line edge cutting device.

  This in-line corner cutting device is incorporated in a filling and packaging line, and the filling and packaging line is folded back upward at the center in the width direction while intermittently feeding a single long packaging film. Both sides of the film overlap each other, and the packaging film is fed horizontally with the widthwise direction so that both sides of the edge are located at the upper end and the folded part is located at the lower end. The folded portion at the lower end of the packaging film is heated and sealed in the longitudinal direction with a longitudinal seal bar extending in the horizontal direction to form a longitudinal seal portion. By forming a horizontal seal part by heat-sealing over the entire width with a horizontal seal bar extending in the vertical direction, the upper side is opened and the other three sides are in a sealed state. A number of packaging bags for bag-making in a state of continuous side-by-side to the feeding direction of the packaging film was.

  Next, the filling and packaging line is subjected to negative pressure adsorption by the vertical adsorption device of the cutting device for every two bags while keeping the side and side continuous packaging bags in the vertical direction, and is packed in the vertical groove formed in the vertical adsorption device. A cutter pushed in from the opposite side of the bag separated the two packaging bags separately from the continuous packaging bag, and the two packaging bags were placed horizontally adjacent to the vertical suction device. Hold the vacuum suction by another vertical suction device that expands and contracts from the rotary table, and first open the packaging bags upward at multiple work stations around the rotary table as the rotary table is indexed and rotated. Then, the packaging bags are sequentially filled with a solid package and a liquid package, then the upper ends of the packaging bags are sealed, and then the upper seals are cooled, After, by discharging at the conveyor to release them of the packaging bag from the vertical adsorber, continuously perform filling and packaging of the packaged articles to a number of the packaging bag.

  By the way, in this filling and packaging line, the horizontal seal bar forms a horizontal seal portion between adjacent packaging bags wider than originally necessary, and an excess portion is provided there. After the bar forms the horizontal seal part with its surplus part, before separating the two packaging bags from the packaging bag in which the cutter of the cutting device is continuous, two adjacent bags of the continuous packaging bag, The upper end of the surplus part and the arc-shaped corners of the upper end of the packaging bag on both sides of the surplus part are cut together with an upper edge punching die, and the lower end of the surplus part and the packaging on both sides of the surplus part Cut the lower edge of the bag together with the arc corner at the bottom edge punching die. And after that, when the cutter of the cutting device cuts off the two packaging bags, the excess portion is also cut off, so that the cutting position of the packaging bag by the cutter and the edge cutting position by the edge punching die are in the feed direction. Even if it is slightly deviated, protrusions are prevented from being generated at the portion cut off from the arcuate corner of the adjacent bag.

  In addition, like the above inline corner cutting device, it is connected to the bag making line or arranged in the filling and packaging line to cut the edge of the flat packaging bag before filling the packaged item. After filling the packaging bag with the contents, the outline shape of the packaging bag changes from that before filling, so the cutting position of the edge varies, and after the fastener is provided on the packaging bag, the fastener This is because it will interfere with the cutting of the edge.

JP 2002-36392 A

  However, since the conventional inline corner cutting device described in Patent Document 1 needs to provide an extra portion for each lateral seal portion between adjacent packaging bags in order to prevent the protrusion from being generated on the cut portion, Since the length of the film is required more than the packaging bag, and the excess portion is discarded, there is a problem that the packaging film is wasted.

  Therefore, the present invention provides an inline edge cutting device that can prevent the occurrence of protrusions due to the deviation between the separation position of the packaging bag and the edge cutting position without providing an excess portion. The purpose is to eliminate.

  The present invention advantageously solves the above-mentioned problems, and the in-line edge cutting device of the present invention is arranged connected to the bag making line or arranged in the filling and packaging line, and the bag making line or the filling packaging. In an in-line edge cutting device for cutting an edge of a packaging bag made in a line, the packaging bag separated in at least one of the bag feeding direction and the direction intersecting with the bag making line is separated. The excavation range includes a conveyor that transports the edges on the separated side with a gap between them, an edge on the separated side of an adjacent packaging bag on the conveyor, and a gap between the edges. And an edge cutter for cutting the edge.

  In such an in-line edge cutting device, the conveyor has the packaging bags separated in at least one of the bag feeding direction of the bag making line and the direction intersecting the bag making line, and the edges on the separated sides thereof. The edge cutter is transported with a gap, and the edge cutter includes the gap between the edges in addition to the edge of the separated side of the adjacent packaging bag on the conveyor. And arc-shaped corners, notches and the like are formed at the edges of adjacent packaging bags.

  Therefore, according to the inline edge cutting device of the present invention, since the gap between the edges enters the cutting range of the edge cutter instead of the surplus part between the conventional packaging bags, the separation position and the edge of the packaging bag Even if there is a deviation from the cutting position, no protrusion is generated at the part cut off from the edge of the adjacent bag.Therefore, the separation position of the packaging bag and the edge cutting position are provided without providing an excess part. It is possible to prevent the occurrence of protrusions due to the deviation of the packaging material, and to reduce the waste of the packaging material.

  In the in-line edge cutting device of the present invention, the conveyor is located on the downstream side of the separating device for cutting the packaging bag in the direction perpendicular to the bag feeding direction of the bag making line, and a plurality of the conveyors that run parallel to each other. The plurality of belt conveyors are separated from each other on the downstream side of the separating device for separating the packaging bags in the direction perpendicular to the bag feeding direction of the bag making line as the distance from the separating device is increased. It is preferable that the packaging bags that are arranged as described above and separated in the direction perpendicular to the bag feeding direction of the bag making line are conveyed so that the edges on the separated side gradually widen the gap.

  In this way, when a large number of packaging bags are made in parallel in a direction orthogonal to the bag feeding direction, a cut such as an arc corner is made at the separating edge of the parallel packaging bags. In addition, it is possible to prevent the occurrence of protrusions due to the deviation between the cutting position and the edge cutting position of the packaging bag without providing a surplus portion in the vertical seal portion between the side and adjacent packaging bags. Can reduce waste.

  Moreover, in the inline edge cutting apparatus of this invention, the said conveyor is located in the downstream of the cutting apparatus which cut | disconnects a packaging bag in the bag feed direction of the said bag making line, and is higher than the bag feed speed of the said bag making line. It is preferable that the packaging bag is operated at a fast bag feeding speed and is transported so that the separated edge portions of the bag are separated in the bag feeding direction of the bag making line.

  In this way, when making a large number of packaging bags continuously in the bag feeding direction, when performing a cut such as an arc corner on the cutting edge between the packaging bags adjacent in the bag feeding direction, Without providing an extra part in the horizontal seal between the adjacent packaging bags, it is possible to prevent the occurrence of protrusions due to the deviation between the cutting position of the packaging bag and the edge cutting position, thereby reducing the waste of packaging materials. can do.

  Furthermore, in the in-line edge cutting device of the present invention, the conveyor is a vacuum belt conveyor that holds the separated packaging bag by suction through the through holes on a conveyor belt having a number of through holes. Preferably there is.

  In this way, when the edge cutter cuts the edge of the packaging bag, the vacuum belt conveyor sucks and holds the packaging bag to prevent the packaging bag from being displaced. The position can be made more accurate.

  And in the in-line edge cutting apparatus of this invention, the said conveyor sends the said packaging bag intermittently, and the said edge cutter is the said packing bag while the said conveyor has stopped feeding. A mold that cuts off the edge is preferable.

  In this way, since a die having a normal punch and die can be used as the edge cutter, the edge cutter can be easily configured, and the chip cut away from the packaging bag can be punched out from the die. Therefore, it is possible to easily and reliably eliminate the scraps from adhering to the packaging bag as foreign matters.

It is a perspective view which shows typically the state which connected and arranged the in-line corner cutting device as one Example of the in-line edge cutting device of this invention to a bag making line. It is a front view which shows the in-line corner cut apparatus of the said Example. It is a left view which shows the in-line corner cut apparatus of the said Example. It is a top view which shows the in-line corner cut apparatus of the said Example. It is a right view which shows the in-line corner cut apparatus of the said Example. It is a top view which shows typically the state in which the in-line corner cut apparatus of the said Example performs the corner cut of a packaging bag.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Here, FIG. 1 is a perspective view schematically showing a state in which an inline corner cutting device as an embodiment of the inline edge cutting device of the present invention is connected to a bag making line, and FIGS. FIG. 4 and FIG. 5 are a plan view and a right side view showing the inline corner cutting device of the above embodiment, and FIG. 6 is a plan view of the above embodiment. It is a top view which shows typically the state in which an inline corner cut apparatus performs the corner cut of a packaging bag, and the code | symbol PL in a figure shows a bag making line and 1 shows the inline corner cut apparatus of the said Example.

  As shown in FIG. 1, the bag-making line PL to which the in-line corner cutting device 1 of this embodiment is connected includes a base film layer made of, for example, biaxially stretched ethylene-vinyl alcohol copolymer resin, and non-stretched, for example. A long laminated film F obtained by laminating a sealant layer made of an ethylene-vinyl acetate copolymer resin or the like is turned vertically by a slant roll 2 and two feed rolls 3 from a horizontally placed film roll R. , Unwind intermittently with a pitch corresponding to the preset size of the packaging bag, adjust the tension with the tension roll 4 and the guide roll 5, and then make a cut at the center of the film width direction with the cutting cutter 6 And divide the two laminated films F upward and downward with two half-fold guide plates 7. Folded in half, moved in the direction of mutual approach by the two feed rolls 8, stacked up and down by the two overlap rolls 9, and sandwiched by two pairs of feed rolls 10, respectively, at the above pitch Intermittently feeds horizontally as indicated by arrows in FIG.

  And at the position between the two sets of feed rolls 10, the laminated film F of the two sheets is heated and sealed by sandwiching it with the hot plate 11 for vertical sealing during the pause (stop) between the intermittent feeds, A longitudinal seal portion L extending in the longitudinal direction of the laminate film F is formed at one end and a center portion in the width direction of the laminate film F (the edge without the longitudinal seal portion L is an opening for filling the contents in a later step) Then, the vertical seal portion L of the two-layered laminated film F is cooled by being sandwiched between the vertical seal cooling plates 12 during the pause during the intermittent feeding.

  Subsequently, the two-layered laminated film F in which the vertical seal portion L is formed is heat-sealed by sandwiching it with the horizontal-sealing hot plate 13 during the pause during the intermittent feeding, so that the entire width in the width direction of the laminated film F is obtained. Are formed at intervals in the longitudinal direction of the film at the above pitch, and then the transverse seal portion W of the two-layer laminated film F is paused during its intermittent feeding. The laminated film F, in which the packaging bags P are continuously formed in two rows in the film width direction in this manner, is cut by a cutting cutter 15. Then cut in the middle of the film width direction and cut it into two rows.

  Furthermore, this bag making line PL is intermittently connected to the laminated film F formed with the two rows of packaging bags P, which is fed from the downstream side (left side in FIG. 1) of the two pairs of feed rolls 10. During a pause during regular feeding, the sheet is cut by a cutting cutter 16 extending over the entire width in the width direction of the laminated film F and cut into individual packaging bags P having the length corresponding to the pitch.

  In this way, the inline corner cutting device 1 according to this embodiment is provided with a cutting cutter as shown in FIG. 1 for the packaging bag P that is individually cut by the cutting cutter 16 as a cutting device and fed side by side. The corner cut which forms the circular-arc-shaped (R-shaped) edge E in the four corners of the packaging bag P is performed in succession to the downstream side of 16.

  In order to perform such a corner cut, the in-line corner cut device 1 of this embodiment includes a plurality of support plates 20a positioned at the front and rear portions of the device 1 and a plurality of connecting plates 20 as shown in FIGS. A main frame 20 having a connecting member 20b (not shown in FIG. 4) and having a caster 20c and a fixed leg 20d below the lower connecting member 20b, and the left and right sides of the apparatus 1 above the main frame. Two vacuum belt conveyors 21 as conveyors, which are provided so as to extend horizontally in the direction, and are arranged downstream of the cutting cutter 16 of the bag making line PL and run parallel to each other, and the two belts Three corner cutters 22 (not shown in FIG. 3) as edge cutters are provided between the conveyor 21 and on both sides. .

  Here, the main frame 20 has two screw shafts 20e extending horizontally in the front-rear direction of the device 1 through the two support plates 20a, and the right screw shaft 20e in FIG. A support plate on the rear side of the conveyor spacing adjustment handle 20f provided at the end projecting forward (downward in FIG. 4) from the support plate 20a on the part side (lower side in FIG. 4) and two screw shafts 20e An end projecting rearward from 20a is connected via a bevel gear mechanism 20g, a connecting shaft 20h having an intermediate portion divided into two, and an intermediate portion of the connecting shaft 20h provided between both ends of the connecting shaft 20h. The two screw shafts 20e each have a screw thread (not shown) that is twisted in opposite directions on both sides of the central portion in the axial direction. Has been. Each of the two belt conveyors 21 has a bracket 21a extending downward from an intermediate portion and an end portion (left end portion in FIG. 3), and nuts 21b respectively provided on the brackets 21a. These nuts 21b are screwed into the screw threads of the two screw shafts 20e twisted in opposite directions.

  Accordingly, when one of the screw shafts 20e is rotated by operating the conveyor interval adjusting handle 20f, the rotation is transmitted to the other screw shaft 20e via the bevel gear mechanism 20g, the connecting shaft 20h, and the coupling 20i, By rotating these two screw shafts 20e in the same direction, the two nuts 21b screwed to the respective screw shafts 20e are moved simultaneously and in the opposite directions, so that the two belt conveyors 21 are attached to the packaging bag P. Depending on the dimensions, they can be moved toward or away from each other. Further, when both ends of the connecting shaft 20h are released by the coupling 20i and are rotated relative to each other, only one screw shaft 20e is rotated, and the two belt conveyors 21 are cut from a state parallel to each other. As it is separated from the cutter 16, it can be changed to a state where it is slightly opened in a letter C shape so as to be slightly separated from each other. The two screw shafts 20e can horizontally support the two belt conveyors 21 via the nut 21b and the bracket 21a.

  Further, each of the two belt conveyors 21 is pivotally supported between two side plates 21c extending over substantially the entire length of the belt conveyor 21 and one end portion (right end portion in FIG. 3) of the side plates 21c. The driving roller 21f disposed between the end roller 21d and the idle roller 21e and the other end portion (the left end portion in FIG. 3) of the side plates 21c, and the above-mentioned extending downward from the other end portions of the side plates 21c. It has two tension rollers 21g pivotally supported between the brackets 21a, and has an annular conveyor belt 21h stretched between these rollers, and this conveyor belt 21h is made of a rubber-like material. In addition, like the timing belt, the inner peripheral surface has teeth with a constant pitch, and the drive roller 21f has teeth on the outer peripheral surface that mesh with the teeth of the conveyor belt 21h. , It is possible to move the conveyor belt 21h without slipping relative to the conveyor belt 21h.

  The drive roller 21f of each belt conveyor 21 is a single spline that passes through one end (the left end in FIG. 3) of the two support plates 20a of the main frame 20 and extends horizontally in the front-rear direction of the apparatus 1. The shaft 21i is inserted into and supported by the spline shaft 21i and is splined to the spline shaft 21i. The end of the spline shaft 21i protruding rearward from the rear support plate 20a is The servomotor 21j attached to the part-side support plate 20a is drivably coupled to an output shaft protruding rearward from the rear-side support plate 20a via a belt transmission mechanism 21k.

  Thus, when the servo motor 21j rotates the two drive rollers 21f via the belt transmission mechanism 21k and the spline shaft 21i, the two belt conveyors 21 move the conveyor belt 21h to the right in FIG. As shown by the arrows in FIG. 6, two rows of packaging bags P can be lined up and conveyed together from right to left in the same figure. The two belt conveyors 21 are opened in a slightly square shape so as to be slightly separated from each other as they are separated from the cutting cutter 16 by relatively rotating between both ends of the connecting shaft 20h. Thus, as the two rows of packaging bags P are separated from the cutting cutter 16, the corners E on the side cut by the cutting cutter 15 gradually widen the inter-row gap D1. Sea urchin to transport.

  In order to make the two belt conveyors 21 slightly open in the shape of a letter C as described above, if the direction of the two belt conveyors 21 is slightly changed, the drive roller 21f is moved by the spline shaft 21i. Since the belt 21h is restrained in a certain direction, the conveyor belt 21h is slightly biased in the lateral direction. In this embodiment, the end roller 21d and the driving roller 21f are disposed between the upper portions of the two side plates 21c. An upper groove-shaped member 21l made of a low-friction coefficient material such as Teflon (registered trademark) provided so as to extend between the conveyor belts at both sides thereof rising along the two side plates 21c. The conveyor belt 21h is guided across both side surfaces of 21h to prevent the lateral displacement of the conveyor belt 21h.

  In addition, the two belt conveyors 21 have an intermittent feed distance of the conveyor belt 21h slightly smaller than an intermittent feed distance (length of the pitch) of the two pairs of feed rolls 10 in the bag making line PL. The operation of the servo motor 21j is controlled so that the conveyor belt 21h is moved intermittently by synchronizing the timing with the intermittent feeding of the laminated film F by the two sets of feed rolls 10 in the bag making line PL. Thus, as shown in FIG. 6, when the packaging bag P is transferred onto the conveyor belt 21 h from the position of the cutting cutter 16, the edges of the packaging bags P in each row separated slightly by the cutting cutter 16 are arranged side by side. It arranges so that the clearance gap D2 may be opened, and arrange | positions on the conveyor belt 21h.

  Further, each of the two belt conveyors 21 is formed with a large number of through holes (not shown) penetrating between the front surface and the back surface of the conveyor belt 21h by being distributed at equal pitches in the longitudinal direction of the conveyor belt 21h. A rectangular tube-shaped suction box 21m is provided between the side plates 21c so as to extend between the end roller 21d and the driving roller 21f. The upper surface of the suction box 21m is the groove-shaped member 21l. Supports the bottom. A large number of through-holes penetrating them are formed in the upper surface of the suction box 21m and the bottom of the channel member 21l, and an opening 21n is formed in the side of the suction box 21m. A suction duct 21p connected to the suction port of the blower 21o disposed at the bottom of the main frame 20 is connected to the opening 21n through the side plate 21c.

  As a result, when the blower 21o is operated and the air in the suction box 21m is sucked through the suction duct 21p, the suction box 21m has a negative pressure, and the two belt conveyors 21 are respectively connected to the upper surface of the suction box 21m. The conveyor belt 21h is moved intermittently while adsorbing and holding the packaging bag P on the conveyor belt 21h by the negative pressure exerted through the through hole with the bottom of the groove member 21l and the through hole of the conveyor belt 21h. The packaging bag P can be stopped at a predetermined position with respect to the three corner cutters 22 during a pause during the intermittent feeding.

  As shown in FIG. 5, each of the three corner cutters 22 in the inline corner cutting device 1 of this embodiment is formed with a punch 22a and a cutout hole 22b having a contour shape substantially matching the contour shape of the punch 22a. And a die for cutting off the edge of the packaging bag P while the belt conveyor 21 stops feeding, and an air cylinder 22d for moving the punch 22a up and down to perform the above cutting. The contour shape of the punch 22a and the contour shape of the cut-off hole 22b of the die 22c are as shown in FIG. 6 with respect to the cut-off hole 22b. Four arcuate parts surrounding the intersection C and the intersections of the vertical and horizontal center lines are connected to both ends of the arcuate parts. Asymptotically approaches the center line as the distance from the point C, and has a sloped linear portion with respect to the center line of the vertical and horizontal.

  Thereby, as shown in FIG. 6, the center corner cutter 22 is located behind the packaging bag P located on the two belt conveyors 21 on both sides of the center cutter cutter 22 ahead of the corner cutter 22 (left side in the figure). 4 corners on the two belt conveyors 21 on the front side of the packaging bag P located in front of the corner cutter 22 on the two belt conveyors 21 (right side in the figure) are simultaneously cut and processed. An arcuate edge E is formed at the corner. The corner cutters 22 on both sides are on the rear side of the packaging bag P positioned on the one belt conveyor 21 located between the corner cutter 22 and the corner cutter 22 (left side in the figure). The two corners of the corner of the packaging bag P located on the one belt conveyor 21 and on the front side of the corner cutter 22 (on the right side in the figure) are cut off at the same time. A substantially arc-shaped edge E is formed at the corner.

  A through hole connected to an air pipe (not shown) is provided at the center of the punch 22a, and another blower is provided below the punch relief hole following the cut-off hole 22b of the die 22c. A vacuum discharge pipe 22e connected to a vacuum box that is not connected via a duct is provided, and a negative pressure generator that generates a negative pressure by drawing air by an air jet from an air pipe in the discharge pipe 22e As a result, when the punch 22a enters the cut-off hole 22b of the die 22c, the compressed air is supplied from the air pipe for a short time and the air jet from the center of the punch 22a is cut. The chip is blown off by the negative pressure generated by the negative pressure generator in the discharge pipe 22e. By sending the vacuum box draws in and holes 22b, to prevent clogging of cut scum in the cutoff hole 22b of the die 22c. Here, the compressed air is supplied for a short time so that the conveyance of the packaging bag P on the belt conveyor 21 is not hindered by the air jet and the negative pressure before and after the cut-off process.

  At the time of the above-described cutting process, the two belt conveyors 21 have four packaging bags P applied to the contour shape of the cutting hole 22b of the die 22c of the center corner cutter 22 in a row between them. The gap D1 and the alignment gap D2 are located between the ends of adjacent arcuate portions of the contour shape of the cut-off hole 22b of the die 22c or between the inclined straight lines connected to them, and are included in the cutting range of the corner cutter 22. The two packaging bags P applied to the contour shape of the cut-off hole 22b of the die 22c of the corner cutters 22 on both sides are arranged with the arrangement gap D2 between them and the side edge of the packaging bag P. Is located between the ends of adjacent arc-shaped portions of the contour shape of the cut-off hole 22b of the die 22c or between the inclined straight lines connected to them. Since it stops so that it may be included in the cutting | disconnection range of the toner cutter 22, even if the stop position of those packaging bags P shift | deviates a little in the feed direction or the width direction of the belt conveyor 21, the arc-shaped edge E of the adjacent packaging bag P Protrusion does not occur in the packaging bag P at the portion cut off excessively.

  By the way, since there are various dimensions of the packaging bag P, the three corner cutters 22 are positioned as described above with respect to the packaging bags P on the two belt conveyors 21 for each size of the packaging bag P. Therefore, it is desirable that the positions of the corner cutters 22 can be adjusted in the longitudinal direction and the width direction of the two belt conveyors 21, respectively.

  Therefore, in the inline corner cutting device 1 of this embodiment, as shown in FIG. 2, a U-shaped notch 20j is formed on the upper part of the two support plates 20a of the main frame 20, and the notch A cutter position adjusting mechanism 23 is provided at the bottom of the portion 20j. The cutter position adjusting mechanism 23 includes a thick plate-like base member 23b extending between the bottoms of the notches 20j of the two support plates 20a and having brackets 23a erected at both ends, and the base A rack and pinion mechanism 23c and a linear guide mechanism 23d provided at the bottom of each notch 20j so as to move the member 23b in the left-right direction of the apparatus 1 and the rack and pinion mechanism 23c are interlocked. It has a connecting shaft 23f that connects the pinions and is provided with a handle 23e at the end on the front side.

  The cutter position adjusting mechanism 23 is a horizontally long supported lower end portion on the base member 23b so as to be movable in the longitudinal direction of the base member 23b, that is, in the width direction of the two belt conveyors 21, via a linear guide mechanism (not shown). Two U-shaped movable frames 23g and two substantially U-shaped supports whose lower ends are supported on the side surfaces of the movable frame 23g via the linear guide mechanisms 23h so as to be movable in the longitudinal direction of the base member 23b. It extends through the post 23i and brackets 23a provided at both ends of the base member 23b and extends horizontally in the front-rear direction of the device 1 on one side (left side in FIG. 2) of the movable frame 23g. And an operating shaft 23k provided with a handle 23j at the end thereof.

  Further, the cutter position adjusting mechanism 23 passes through the brackets 23a provided at both ends of the base member 23b, and on the same axis on the other side (right side in FIG. 2) of the movable frame 23g. Two screw shafts 23l that extend horizontally in the direction and are respectively screwed into the female screws provided at the lower part of the two support posts 23i, and a position in front of the base member 23b at a position facing the end face of the movable frame 23g. One screw shaft 23m that penetrates the bracket 23a on the side and extends horizontally in the front-rear direction of the device 1 and is screwed into a female screw provided at the lower portion of the movable frame 23g (in FIG. 4, these shafts). The handle 23n and the handle 23o are respectively provided at the ends of the front screw shaft 23l and the screw shaft 23m, and the end of the collar screw shaft 23l is a tooth. It is drivingly connected to an end portion of the rear side of the operating shaft 23k via a set 23p.

  As shown in FIGS. 2 and 5, the air cylinder 22d is mounted on the upper end portion of the support post 23i and the punch 22a is formed on the side surface of the support post 23i for the corner cutters 22 on both sides. It is supported by a piston rod of an air cylinder 22d through a linear guide mechanism 23q, and is connected to the piston rod of the air cylinder 22d. The die 22 is fixed to an abutment protruding laterally from the lower portion of the support post 23i and aligned with the punch 22a vertically. In the center of the three corner cutters 22, the air cylinder 22 d is a support member fixed to the side surface of the upper part of the movable frame 23 g (the upper part of the horizontally long through hole). When the punch 22a is mounted on the side surface of the support member 23r so as to be movable up and down via a linear guide mechanism 23q. The die 22 is coupled to the piston rod of the air cylinder 22d. The die 22 is fixed to a support member 23s fixed to the side surface of the lower portion of the movable frame 23g (the lower portion of the horizontally long through-hole) and the punch 22a. Aligned vertically. The two belt conveyors 21 pass through the horizontally long through-holes of the movable frame 23g.

  As a result, when the handle 23e is operated to rotate the connecting shaft 23f, the front and rear rack and pinion mechanisms 23c are interlocked, and the base member 23b is moved in the longitudinal direction of the two belt conveyors 21 under the guidance of the linear guide mechanism 23d. When the operation shaft 23k is rotated by operating the handle 23j and rotating the operation shaft 23k, the rotation is transmitted to the heel side screw shaft 23l through the gear set 23p, and the heel side screw shaft 23l is screwed with it. When the combined support post 23i and then the rear corner cutter 22 are moved in the width direction of the belt conveyor 21, while the handle 23n is operated to rotate the front screw shaft 23l, the front screw shaft 23l is moved. The support post 23i and the front corner cutter 22 screwed with it are moved in the width direction of the belt conveyor 21, and the handle 23o Rotation to move the movable frame 23g and thus the center of the corner cutter 22 screw shaft 23l of the front side is screwed thereto in the width direction of the belt conveyor 21.

  The inline corner cutting device 1 of this embodiment is further provided with a packaging bag kicking mechanism 24 on the left end of the main frame 20, and the packaging bag kicking mechanism 24 is provided for each of the two belt conveyors 21. The four free rollers 24a disposed on both sides of the drive roller 21f and supported on the spline shaft 21i so as to be freely rotatable via bearings, and four kick rollers positioned above the free rollers 24a 24b.

  The packaging bag kick-out mechanism 24 is fixed on the left end portion of the main frame 20 and extends horizontally in the front-rear direction of the device 1, and the fixing frame 24c is moved up and down. The upper elevating plate 24e and the lower elevating plate 24f, which are connected to each other by two guide rods 24d passing therethrough and extend horizontally in the front-rear direction of the apparatus 1, and the elevating and lowering of the guide rod 24d are provided on the fixed frame 24c. Two guide sleeves 24g for guiding the respective movements, and inserted into the guide sleeves 24g and inserted between the upper elevating plate 24e and the fixed frame 24c, and always urge the upper elevating plate 24e upward. A support spring 24h, and an air cylinder 24i that is erected on the fixed frame 24c to move the upper elevating plate 24e and the lower elevating plate 24f up and down. A spline shaft 24j that is supported by brackets at both ends of the lower lifting plate 24f and extends horizontally in the front-rear direction of the apparatus 1, and the four kick rollers 24b are connected to the spline shaft 24j. Each of the intermediate portions is splined.

  Further, the packaging bag kicking mechanism 24 has a servo motor 24k on the upper elevating plate 24e, and the output shaft of the servo motor 24k is driven via a belt transmission mechanism 24l at the rear end portion of the spline shaft 24j. Are combined.

  As a result, the servo motor 24k rotates the spline shaft 24j and thus the four kicking rollers 24b through the belt transmission mechanism 24l so that the speed of the outer peripheral surface thereof is faster than the conveying speed of the packaging bag P by the two belt conveyors 21. While driving, the air cylinder 24i moves the upper elevating plate 24e and the lower elevating plate 24f downward against the support spring 24h so that the four kicking rollers 24b are positioned at the unloading side end portions of the two belt conveyors 21. When pressed against the packaging bag P on the four free rollers 24a, the packaging bag P sandwiched between the four kicking rollers 24b and the four free rollers 24a is determined by the conveying speed of the two belt conveyors 21. There is a table 25 adjacent to the apparatus 1 that is kicked from the belt conveyor 21 to the side of the apparatus 1 at a high speed. It is transferred onto another conveyor (conveying device). The fixed frame 24c extends and supports a static eliminating rod 24m. The static eliminating rod 24m removes the charge of the packaging bag P and prevents the packaging bags P from sticking to each other due to static electricity and overlapping on the table 25. To do.

  Thus, according to the in-line corner cutting device 1 of this embodiment, the gap between the edges enters the cutting range of the corner cutter 22 instead of the surplus portion between the conventional packaging bags. Even if there is a deviation in the part cut position, no protrusion is generated at the part cut off from the corner of the adjacent packaging bag P. Therefore, the separation position and corner of the packaging bag P are provided without providing an excess part. Generation | occurrence | production of the protrusion resulting from the shift | offset | difference with a part cut position can be prevented, and the waste of the laminated | multilayer film F can be reduced.

  Moreover, according to the in-line corner cutting device 1 of this embodiment, the conveyors are located on the downstream side of the cutting cutter 15 that cuts the packaging bag in the direction perpendicular to the bag feeding direction of the bag making line PL and run parallel to each other. There are two belt conveyors 21, and these belt conveyors 21 are separated from the cutting cutter 15 on the downstream side of the cutting cutter 15 that cuts the packaging bag P in the direction perpendicular to the bag feeding direction of the bag making line PL. As the packaging bag P is arranged in a slightly C shape so as to be separated from each other and cut in a direction orthogonal to the bag feeding direction of the bag making line PL, the corners on the cut-off side gradually become between the rows. Since it conveys so that the clearance gap D1 may be expanded, when making a large number of packaging bags P in parallel in two rows in the direction orthogonal to the bag feeding direction, they are parallel to each other. When cutting arcuate corners at the cut corners of the bags P, the cutting positions and corners of the packaging bags P are provided without providing an extra portion in the vertical seal portion L between the adjacent and adjacent packaging bags. Generation | occurrence | production of the protrusion resulting from the shift | offset | difference with a cut position can be prevented, and the uselessness of the laminated film F can be reduced.

  Furthermore, according to the inline corner cutting device 1 of this embodiment, the conveyor is located downstream of the cutting cutter 16 that cuts the packaging bag P in the bag feeding direction of the bag making line PL, and the bag feeding of the bag making line PL. It operates at a bag feeding speed faster than the speed, and conveys the packaging bag P separated in the bag feeding direction of the bag making line PL so that the corners on the separated side are aligned and the gap D2 is opened. Therefore, when making a large number of packaging bags P continuously in the bag feeding direction, when cutting arc-shaped corners at the cut corners of the packaging bags P adjacent to each other in the bag feeding direction, Without providing a surplus portion in the lateral seal portion W between the matching packaging bags P, it is possible to prevent the occurrence of protrusions due to the deviation between the cutting position and the corner cutting position of the packaging bag P, and waste of the laminated film F Can be reduced in That.

  Furthermore, according to the inline corner cutting device 1 of this embodiment, the conveyor is a vacuum belt that sucks and holds the packaging bag P cut off on the conveyor belt 21h having a large number of through holes by means of negative pressure through the through holes. Since it is the conveyor 21, when the corner cutter 22 cuts off the corner of the packaging bag P, the vacuum belt conveyor 21 sucks and holds the packaging bag P to prevent the positional displacement of the packaging bag P. The cut position of the corner of P can be made more accurate.

  In the in-line corner cutting device 1 of this embodiment, the conveyor intermittently feeds the packaging bag P, and the corner cutter 22 is provided at the corner of the packaging bag P while the conveyor pauses feeding. Since it is a mold that cuts off a portion, a mold having a normal punch 22a and a die 22c can be used as the corner cutter 22. Therefore, the corner cutter 22 can be easily configured and cut out from the packaging bag P. The debris can be easily and reliably removed to the outside through the punch relief hole 22b connected to the cut-off hole 22b of the die 22c, and the debris can be easily prevented from adhering to the packaging bag P as a foreign matter.

  As described above, although illustrated based on the illustrated examples, the present invention is not limited to the above-described examples, and can be appropriately changed within the scope of the claims. For example, the material and the lamination of the laminated film F The structure can be appropriately selected from known ones according to the type and amount of the objects to be packaged, and the number of rows of the packaging bags P can also be selected as appropriate. In addition, the inline edge cutting device of the present invention may cut notches or the like in the edge extending between the corners of the packaging bag instead of or in addition to the corner cutting.

  Furthermore, in the inline edge cutting device of the present invention, a plurality of parallel running conveyors are arranged in parallel with each other, not in the shape of a letter C, and are separated in a direction intersecting the bag feeding direction of the bag making line. Even if the packaging bag is provided with a conveying means such as an oblique feed roller for sending it on the conveyor in an oblique direction so that the edges on the separated side are in a state of opening a gap. In addition, the in-line edge cutting device according to the present invention may be configured such that the conveyor cuts the packaging bag separated in only one of the bag feeding direction of the bag making line and the direction intersecting with the edge on the separated side. The parts are conveyed with a gap between them, and the edge cutter includes the edge of the side of the adjacent packaging bag on the conveyor where the edge is separated and the gap between the edges included in the cutting range. Part It may be one that door.

  In the inline edge cutting device of the present invention, instead of a mold as an edge cutter, a protrusion is formed on one outer peripheral surface of a pair of rollers in contact with each other and the protrusion is formed on the other outer peripheral surface. A recess or hole that fits with the roller may be formed, and a roller-type cutter that cuts the edge of the packaging bag that is continuously fed by the rotation of the rollers may be provided. Instead of being connected to the bag making line, the edge cutting device may be arranged in the filling and packaging line to perform edge cutting, and thereafter filling the contents into the packaging bag.

  Thus, according to the inline edge cutting device of the present invention, the gap between the edges enters the cutting range of the edge cutter instead of the surplus part between the conventional packaging bags, so that the separation position of the packaging bag and the edge cutting Even if there is a deviation from the position, no protrusion is generated at the part cut off from the edge of the adjacent bag, so there is no need to provide a surplus part between the separation position of the packaging bag and the edge cutting position. Protrusions caused by the shift can be prevented and waste of the packaging material can be reduced.

DESCRIPTION OF SYMBOLS 1 Inline corner cutting apparatus 2 Diagonal roll 3 Feed roll 4 Tension roll 5 Guide roll 6 Cutting cutter 7 Half-fold guide plate 8 Feed roll 9 Stack roll 10 Feed roll 11 Hot plate for vertical seal 12 Cooling plate for vertical seal 13 Horizontal seal Hot plate 14 Cooling plate for horizontal seal 15 Cutting cutter 16 Cutting cutter 20 Main frame 20a Support plate 20b Connecting material 20c Caster 20d Fixed leg 20e Screw shaft 20f Conveyor interval adjusting handle 20g Bevel gear mechanism 20h Connecting shaft 20i Coupling 20j Notch 21 Belt conveyor 21a Bracket 21b Nut 21c Side plate 21d End roller 21e Idle roller 21f Drive roller 21g Tension roller 21h Conveyor belt 21i Spline shaft 21 Servo motor 21k Belt transmission mechanism 21l Grooved member 21m Suction box 21n Opening 21o Blower 21p Suction duct 22 Corner cutter 22a Punch 22b Cut-off hole 22c Die 22d Air cylinder 22e Scraping discharge pipe 23 Cutter position adjusting mechanism 23a Bracket 23b Base member 23 Rack and pinion mechanism 23d Linear guide mechanism 23e Handle 23f Connection shaft 23g Movable frame 23h Linear guide mechanism 23i Support post 23j Handle 23k Operation shaft 23l Screw shaft 23m Screw shaft 23n Handle 23o Handle 23p Gear set 23q Linear guide mechanism 23r Support member 23r Support member 23r Member 24 Packaging bag kicking mechanism 24a Free roller 24b Kicking roller 24c Fixed frame 24d Id rod 24e Upper elevating plate 24f Lower elevating plate 24g Guide sleeve 24h Support spring 24i Air cylinder 24j Spline shaft 24k Servo motor 24l Belt transmission mechanism 24m Static electricity removing rod 25 Table C Intersection D1 Inter-row clearance D2 Arrangement clearance E Edge F Multilayer film L Vertical seal part P Packaging bag PL Bag making line R Film roll W Horizontal seal part

Claims (5)

In an inline edge cutting device that is connected to a bag making line or arranged in a filling and packaging line and cuts the edge of the bag made in the bag making line or the filling and packaging line.
A conveyor for transporting the packaging bag separated in at least one direction among the bag feeding direction of the bag making line and the direction intersecting with the bag, in a state where the edges on the separated side have a gap between them;
An edge cutter that cuts the edge by including the edge of the separated side of adjacent packaging bags on the conveyor and the gap between the edges in a cutting range;
An in-line edge cutting device characterized by comprising: The conveyor has a plurality of belt conveyors that are located on the downstream side of the separating device that cuts the packaging bag in a direction orthogonal to the bag feeding direction of the bag making line and that run parallel to each other.
The plurality of belt conveyors are arranged on the downstream side of the separating device for separating the packaging bag in a direction perpendicular to the bag feeding direction of the bag making line, and are arranged so as to be separated from each other as they are separated from the separating device. 2. The in-line edge portion according to claim 1, wherein the packaging bag separated in a direction perpendicular to the bag feeding direction of the bag making line is conveyed so that the edge portions on the separated side gradually widen the gap. Cutting equipment.   The conveyor is located on the downstream side of the cutting device for cutting the packaging bag in the bag feeding direction of the bag making line, operates at a bag feeding speed faster than the bag feeding speed of the bag making line, and the bag making line The in-line edge cutting device according to claim 1 or 2, wherein the packaging bags separated in the bag feeding direction are conveyed so that the edges on the separated sides are opened.   The said conveyor is a vacuum type belt conveyor which adsorbs and hold | maintains the said separated packaging bag on the conveyor belt with many through-holes by the negative pressure through the through-hole. The inline edge cutting device according to any one of the above. The conveyor is to intermittently send the packaging bag,
The inline edge according to any one of claims 1 to 4, wherein the edge cutter is a mold for cutting off an edge of the packaging bag while the conveyor is stopped feeding. Part cutting device.

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