JP4575767B2 - Punching cut blade in vertical multi-row automatic packaging machine - Google Patents

Description

  The present invention belongs to the technical field of an automatic packaging machine that automatically fills and wraps a material to be packaged (contents) using a packaging film (packaging material). The present invention relates to a punch cut blade in a vertical multi-row automatic packaging machine that forms a stick packaging bag by forming into a cylindrical shape.

  2. Description of the Related Art Conventionally, there is a vertical multi-row automatic packaging machine configured so that a plurality of stick-type packaging bags can be continuously sealed at a time. Each of the packaging films cut into a plurality of pieces is wound around each former pipe configured in a multi-row form, formed into a cylindrical shape, and then longitudinally sealed against the seam of the packaging film by a longitudinal heat sealer. To form a cylindrical shape, and then a horizontal seal is applied to a specified position of the cylindrical packaging film by a horizontal heat sealer.

  The vertical multi-row automatic packaging machine uses a filling pipe to fill the packaging material (contents) into the resulting bag-shaped packaging film, and then horizontally seals and seals the packaging material inlet. Then, it is cut using a cutter device to the vicinity of the center of the sealed horizontal seal portion, and finally the stick-shaped packaging bags in the individual packaging form are multi-row and continuously sealed. It has become. An example of such a vertical multi-row automatic packaging machine is disclosed in Patent Document 1.

  In the conventional individual packaging bags as described above, when a large number of finished packaging bags are collected, the corners of the cut portions and the bag portions of other individual packaging bags come into contact with each other, and a hole is formed in the packaging bag portion. An accident may occur. For this reason, it is processed into a shape (so-called “R-cut” shape) in which the corner of the cut portion of the horizontal seal is cut off to prevent such an accident.

  In the cutter device that cuts into the R-cut shape, unlike the case of the straight cut, a punching structure is required to cut off the corner portion. And the cutting blade (male blade) shape of the cutter device punched into this conventional R-cut shape had an arc shape with a recessed central portion in the longitudinal direction of the blade edge.

  FIG. 9 is a top view of one conventional cutter unit 120 as viewed from above. As shown in FIG. 9, this one cutter unit 120 is a cutter device corresponding to one row of stick-shaped packaging bags configured in a multi-row type, and is prepared for the number of rows in the horizontal direction. Installed in parallel. And the cutting blade 122 is incorporated in the inside of this cutter part, and it connects with the air cylinder 121 which drives this cutting blade 122 with a drive shaft.

Further , an R-cut punching die 123 is provided at a position facing the cutting edge of the cutting blade 122 at a predetermined interval, and a continuous stick-shaped package that is not separated between the cutting edge of the cutting blade and the punching die 123. A bag is set from the front side to the back side of the drawing. A shape of the punching die 123 viewed from the side from above is shown as a punching hole 150 in the upper portion of the cutter portion.

Next, the operation of the cutter unit shown in FIG. 9 will be described. In a vertical multi-row automatic packaging machine, stick-shaped packaging bags are made continuously and intermittently, and this packaging bag is set between the cutting blade 122 and the punching die 123. When this packaging bag comes to the cutting position (near the center of the horizontal seal portion), the vertical multi-row automatic packaging machine feeds compressed air into the air cylinder 121 and drives the cutting blade 122 toward the punching die 123. And punching and cutting into an R-cut shape.

  FIG. 10 is a top view of the cutting blade 122 mounted on the conventional cutter unit 120 as viewed from above. As shown in FIG. 10, the cutting blade 122 includes both end members 124 and 125 having a thickness in the short side direction, and a central member 126 having a curve from the both end members to reduce the thickness in the short side direction. The cutting edge of the cutting blade 122 is composed of the cutting edges of both end members 124 and 125 having the same length and the cutting edge of the central member 126 having a shape that is recessed in an arc shape from the cutting edges of the both end members in the longitudinal direction. Has been.

The reason why the longitudinal cutting edge of the central member 126 is recessed in an arc shape is that the contact state of the cutting edge line of the cutting blade (male blade) fitted into the die receiving blade (female blade) having a planar structure is point contact. It is for making it into a state.
Japanese Patent Laid-Open No. 9-272511

  Thus, in the conventional vertical multi-row automatic packaging machine, the cutting edge of the cutting blade (male blade) for making an R-cut individual packaging bag is recessed in an arc shape toward the central portion in the longitudinal direction. Since it has a shape, the contact state of the cutting edge line between the cutting edge (male edge) of the cutting blade (male edge) and the cutting die receiving edge (female edge) to be fitted becomes a point contact state having an intersecting angle. The sharpness at the part is good. However, as the punching operation proceeds, the crossing angle of this cutting edge line decreases, and at the end of the punching operation, a linear punch receiving blade (fitting to the cutting edge of the arcuate cut blade (male blade)) ( Since the female blade) becomes tangent, the contact state of the cutting edge line becomes a line contact state, and fine cutting residue is generated, resulting in partial deterioration in sharpness and finishing.

  The present invention has been made to solve such problems, and in the process of punching a continuous packaging bag into an R-cut shape, the sharpness of all punched portions is improved and no uncut portions are generated. It is to provide a cutter device.

(1) An R-cutter device for a vertical multi-row automatic packaging machine according to claim 1 of the present invention made to solve the above-mentioned problems is a slitter device that slits a wide film into a plurality of packaging films. A vertical sealing device and a horizontal sealing device for forming a packaging bag by forming a plurality of packaging films into a cylindrical shape while forming them into a cylindrical shape, and filling for filling a packaging material (contents) in the packaging bag A horizontal sealing device that seals the device, a filling port of the packaging bag filled with the material to be packaged (contents) and conveys the packaging bag downward, and a lateral seal portion of the conveyed packaging bag A vertical multi-row automatic wrapping machine provided with an R cutter device that performs R-cutting to form individual packaging bags, wherein the cutter portion of the R cutter device includes a die receiving blade (female blade) having a planar structure , Snap into this Thin cut blade (male blade) which can cut, and a air cylinder for driving the cutting blade, the cutting edge of the cutting blade, the end members having a thickness in the lateral direction, the thickness with curved from the end members The cutting edge has a substantially H shape when viewed from the cutting edge direction, and the cutting edge has a longitudinal shape extending from one end to the other end in the longitudinal direction of the cutting blade. It is a straight line having a certain inclination, and the shape in the short direction of the cutting edge of the cutting blade is recessed in an arc shape, the cutting edge width dimension of the central member of the substantially H-shaped cutting edge, and the lateral seal width dimension of the packaging bag It is characterized the same to be Rukoto the.

(2) An R cutter device for a vertical multi-row automatic packaging machine according to claim 2 of the present invention includes a slitter device for slitting a wide film into a plurality of packaging films, and the plurality of packaging films in a cylinder. A vertical seal device and a horizontal seal device for forming a packaging bag by forming a vertical seal and a lateral seal while forming into a shape, a filling device for filling a packaging material (contents) in the packaging bag, and the packaging material (contents) A lateral seal device that seals the filling port of the packaging bag filled with the product) and conveys the packaging bag downward, and an individual packaging bag by applying an R-cut to the lateral seal portion of the conveyed packaging bag. A vertical multi-row automatic wrapping machine provided with an R cutter device, wherein the cutter portion of the R cutter device is cut into a punching receiving blade (female blade) having a planar structure and fitted into this. With cutting blade (male blade) And a air cylinder for driving the cutting blade, the cutting edge of the cutting blade, constituted by a end members having a thickness in the lateral direction, the longitudinal direction of the central member are reduced thickness with curved from the end members And has a substantially H shape when viewed from the cutting edge direction, and the longitudinal shape of the cutting edge of the cutting blade is a straight line having a constant inclination from one end to the other end in the longitudinal direction of the cutting blade, The shape in the short direction of the cutting edge of the cutting blade is a straight line having a constant inclination from one end to the other end in the short direction of the cutting blade, the width of the cutting edge of the central member of the substantially H-shaped cutting edge, and packaging the same as to Rukoto lateral sealing width of the bag are characterized.

According to the R cutter device of the vertical multi-row automatic packaging machine described in (1) and (2) above, the cutting edge (male blade) of the R cutter device is provided with a continuous inclination at the blade edge in the longitudinal direction. and, by the cutting edge in the transverse direction is provided an arcuate recess, the contact state of the edge line of the cutting die receiving blade (female blade) fitted with cutting edge of the cutting blade (male blade), continuous It is possible to achieve a point contact state.

As described above, according to the present invention, the cutting blade of the R cutter device (male blade), by providing the slope is continuous in the cutting edge, cutting die receiving fitting the cutting edge of the cutting blade (male blade) The contact state of the cutting edge line with the blade (female blade) is a continuous point contact state, the sharpness of all the punched parts is improved, and there is an advantage that no uncut residue occurs, and the center of the substantially H-shaped cutting edge Since the cutting edge width of the member and the horizontal seal width of the packaging bag are the same, even if the cutting edge in the short direction of both end members of the cutting blade is recessed in an arc shape, there is no vertical effect on the punching operation. A cutter device for a row automatic packaging machine can be provided.

  Embodiments of a cutting blade (male blade) of an R cutter device in a vertical multi-row automatic packaging machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a vertical multi-row automatic packaging machine embodying the present invention, and FIG. 2 is a side view of the vertical multi-row automatic packaging machine embodying the present invention. In these drawings, the automatic packaging machine generally indicated by reference numeral 1 is configured so that a plurality of stick packaging bags can be continuously sealed at a time. In addition, although the number of rows of the vertical multi-row automatic packaging machine in FIG. 1 is described as an example of 6 rows, an arbitrary value corresponding to the width of the raw roll film can be adopted as the number of rows.

  As shown in FIGS. 1 and 2, 1F is a main body frame, 2 is a hopper containing a material to be packaged (contents), 3 is a material to be packaged supplied from the hopper 2 and is supplied to a filling pipe 4 The metering board 4 is formed into a plurality of wrapping films F ′ that are slit and narrowed into a substantially cylindrical shape, and is a filling pipe that serves as an input passage for the material to be packaged, 5 is a vertical sealing device, and 6 is below it. A lateral seal device provided in the bag, 7 is a bag guide for supporting the completed continuous packaging bag, and 8 is an R cutter device that is punched into an R-cut shape near the center of the lateral seal of the continuous packaging bag to form an individual packaging bag having no corners. , 9 is a slide for receiving the separated individual packaging bags, and 10 is an operation panel box.

  In FIG. 2, FH is an original roll wound with a wide packaging film (wrapping material), F is a wide film drawn from the original roll FH, FX is the wide film F and the above-mentioned filling pipe 4 is a slitter device that slits into a plurality of narrow packaging films F ′ according to the number of rows of four. The packaging films F ′ sequentially drawn downward in accordance with the vertical movement of the horizontal sealing device 6 are formed into a substantially cylindrical shape so as to wrap around the respective filling pipes 4.

  The vertical multi-row automatic packaging machine sandwiches the open ends of each packaging film F ′ with a vertical heat sealer of the vertical sealing device 5 to perform vertical sealing, and seals each packaging film F ′ into a substantially cylindrical shape. Further, after the laterally sealing device 6 laterally seals the substantially cylindrical packaging film F ′, the material to be packaged (contents) is introduced into the packaging film F ′ through the filling pipe 4, and at the same time, By moving the packaging film F ′ downward by moving it downward by one packaging bag while being held by the sealing device 6, the horizontal sealing device 6 is returned upward to perform horizontal sealing again. Seal molding is performed in a row.

  The above operation is continuously repeated, and the central portion of each horizontal seal is cut up and down by the R cutter device 8 so that a large number of stick type individual packaging bags can be continuously produced at a time. It is configured. As in FIG. 1, 2 is a hopper, 3 is a metering board, and 11 is a motor that drives the metering board 3.

  FIG. 3 is a side view of the R cutter device 8 in the vertical multi-row automatic packaging machine of the present invention, and FIGS. 4 and 5 are top views of the R cutter device 8 similarly. 4 shows a state before the cutter blade and the punching die are fitted, and FIG. 5 shows a state when the cutter blade and the punching die are fitted. As shown in FIGS. 3 to 5, in the R cutter device 8, one cutter portion 20 is prepared for the number of rows and attached to the cutter frame 24, and is arranged in parallel in the horizontal direction. Note that the number of columns in FIGS. 4 and 5 is described as an example of seven columns.

  A cutting blade 22 is incorporated in the cutter unit 20 and is connected to an air cylinder 21 that drives the cutting blade 22 by a drive shaft. An R-cut punching die 23 is provided at a position facing the cutting edge of the cutting blade 22 with a certain interval, and a continuous stick-shaped packaging bag FZ that is not separated between the cutting edge of the cutting blade and the cutting die 23 is provided. It is set.

  In the cutter frame 24 to which the cutter units 20 are attached by the number of rows, a dust collection passage 25 for collecting chips (R cut residue) punched by the cutting blade 22 and the punching die 23 is provided. A slide 9 is installed immediately below the cutter device 8.

  FIG. 6 is a top view of one cutter unit 20 of the R cutter device 8 according to the present invention as viewed from above. As shown in FIG. 6, this one cutter unit 20 is a cutter device corresponding to one row of stick-shaped packaging bags configured in a multi-row type, and is prepared for the number of rows in the horizontal direction. Installed in parallel. And the cutting blade 22 is incorporated in this cutter part, and it connects with the air cylinder 21 which drives this cutting blade 22 with a drive shaft.

  An R-cut punching die 23 is provided at a position facing the cutting edge of the cutting blade 22 with a certain interval, and a continuous stick-shaped packaging bag that is not separated between the cutting edge of the cutting blade and the cutting die 23 is shown in the drawing. It is set from the front to the back. A shape of the punching die 23 as viewed from the side from above is shown as a punching hole 50 at the upper part of the cutter part.

  The operation of the cutter unit shown in FIG. 6 will be described. In a vertical multi-row automatic packaging machine, stick-shaped packaging bags are made continuously and intermittently, and this packaging bag is set between the cutting blade 22 and the punching die 23. When this packaging bag comes to the cutting position (near the center of the horizontal seal portion), the vertical multi-row automatic packaging machine feeds compressed air into the air cylinder 21 and drives the cutting blade 22 toward the punching die 23. And punching and cutting into an R-cut shape.

  FIG. 7 is a top view of the cutting blade 22 mounted on the cutter unit 20 of the present invention as seen from above, and FIG. 8 is an oblique side view of the cutting blade 22 as seen from obliquely upper right. As shown in FIGS. 7 and 8, the cutting blade 22 is composed of both end members 44 and 45 having a thickness in the short side direction, and a central member 46 having a curved shape from the both end members to reduce the thickness in the short side direction. When viewed from the side from the blade edge direction, it has a substantially H shape.

  The cutting edge of the cutting blade 22 is configured such that the entire length of the both end members 44 is longer than the entire length of the both end members 45, and has a linear shape inclined from the cutting edge of the long both end members 44 to the cutting edge of the short both end members 45. The cutting edge of the center member 46 is configured.

  Further, as shown in FIG. 8, in the short direction of both end members 44, 45, the short center portion has a concave arc shape, and has a linear shape inclined in the long direction. It has a composite shape of the cutting edge of the center member 46 and the cutting edges of both end members 44 and 45 having a circular arc shape with a recessed central portion in the short direction.

  The reason for having a combined shape of the cutting edge of the inclined linear center member 46 and the cutting edges of the arc-shaped end members 44 and 45 is that it is fitted to a die receiving blade (female blade) having a planar structure. This is a device for maintaining the point contact state as much as possible from the first contact state to the last contact state in the cutting blade line of the cutting blade (male blade) to be inserted.

  As described above, the present invention described with reference to FIG. 7 and FIG. 8 provides a cutter device in which the punching of all the punched portions is improved and the uncut portion is not generated in the process of punching a continuous packaging bag into an R-cut shape. can do.

In FIG. 7 and FIG. 8, the short also side direction edge is dented in an arc shape, below (1) and (2) the point, a point which is pointed out in conventional problems (arc-shaped end members 44 and 45 The fine cuts that occur in the central part of the are not a problem.

(1) The cutting edge width of the central member 46 of the cutting blade 22 that performs the punching operation is set to the same width as the bag width near the center of the horizontal seal of the stick packaging bag, The punching action is performed only at the cutting edge portion of the central member 46. For this reason, even if the short direction cutting edges of both end members 44 and 45 are recessed in an arc shape, the punching operation is not directly affected.

(2) When viewed from the side of the cutting edge of the cutting blade 22, the short direction of the cutting edge is sufficiently shorter than the longitudinal direction, and the curve recessed in the arc shape in the short direction is a longitudinal direction that is a conventional example. Compared to the curve that is recessed in the arc shape, the curve is sufficiently steep, and the contact state of the cutting edge line between the cutting edge of the cutting blade (male blade) and the cutting die receiving blade (female blade) is longer than the point contact state. Can be maintained. For this reason, possibility that a fine uncut will occur will be reduced.

  Further, for the same reason as described above, the short direction cutting edges of the both end members 44 and 45 may have a linear shape without being recessed in an arc shape. That is, the above description will be repeated, but the action of punching near the center of the horizontal seal of the stick packaging bag is mainly performed by the cutting edge portion of the center member 46, and therefore the shape of the cutting edge direction of the both end members 44, 45 is It can be said that there is little direct influence on the punching operation. Accordingly, the shape of the cutting edge in the short direction of both end members 44 and 45 may be a linear shape in addition to being recessed in an arc shape. In this case, the linear shape preferably has an inclination at the blade edge in a side view.

  Further, in this specification, the R-cut refers to a cutting process for removing a sharp corner portion of a packaging bag cut linearly. Therefore, the R-cut shape in the present specification is not only for punching and removing the corners of the packaging bag in a substantially curvilinear shape, but also for preventing the individual packaging bags from being damaged by other methods. Including the case of removal.

1 is a front view of a vertical multi-row automatic packaging machine embodying the present invention. 1 is a side view of a vertical multi-row automatic packaging machine embodying the present invention. It is a side view of the R cutter apparatus 8 in the vertical multi-row automatic packaging machine of the present invention. It is a top view of R cutter device 8 in the vertical type multi-row automatic packaging machine of the present invention, and represents the state before inserting a cutter blade and a punching die. It is a top view of R cutter device 8 in the vertical type multi-row automatic packaging machine of the present invention, and represents the state when a cutter blade and a punching die were fitted. It is the upper side figure which looked at one cutter part 20 of R cutter device 8 in the present invention from the top. It is the top view which looked at the cutting blade 22 with which the cutter part 20 of this invention was mounted | worn from the top. It is the diagonal side view which looked at the cutting blade 22 with which the cutter part 20 of this invention was mounted | worn from diagonally upper right. It is the top view which looked at the conventional one cutter part 120 from the top. It is the top view which looked at the cutting blade 122 with which the conventional cutter part 120 was mounted | worn from the top.

DESCRIPTION OF SYMBOLS 1 Automatic packaging machine 1F Main body frame 2 Hopper 3 Weighing supply board 4 Filling pipe 5 Vertical sealing device 6 Horizontal sealing device 7 Bag guide 8 R cutter device 9 Slide stand 10 Operation panel box 11 Motor F Packaging film FH Roll with packaging film FX Slitter device 20 Cutter unit 21 Air cylinder 22 Cutting blade 23 R cut punching die 24 Cutter frame 25 Dust collection passage 44, 45 Both end member 46 Central member 50 Punching hole

Claims (2)

A slitter device for slitting a wide film into a plurality of packaging films;
A vertical sealing device and a horizontal sealing device that form a packaging bag by vertically sealing and laterally sealing the plurality of packaging films into a cylindrical shape, and
A filling device that fills the packaging material (contents) in the packaging bag;
A lateral sealing device that seals the filling port of the packaging bag filled with the material to be packaged (contents) and conveys the packaging bag downward;
A vertical multi-row automatic wrapping machine provided with an R cutter device that performs R-cutting on the lateral seal portion of the transported packaging bag to form an individual packaging bag,
The cutter part of the R cutter device includes a punching die receiving blade (female blade) having a planar structure, a cutting blade (male blade) that is fitted into the cutting blade, and an air cylinder that drives the cutting blade.
The cutting edge of the cutting blade is composed of both end members having a thickness in the short-side direction and a center member in the longitudinal direction in which the thickness is reduced from the both end members by a curve, and has a substantially H shape when viewed from the cutting edge direction. Have
The longitudinal shape of the cutting edge in the cutting blade is a straight line having a constant inclination from one end to the other end in the longitudinal direction of the cutting blade,
The shape in the short direction of the cutting edge of the cutting blade is recessed in an arc shape ,
R cutter device of the vertical multi-row automatic packaging machine, wherein a cutting edge width of the central member of the substantially H-shaped cut edge, the same as to Rukoto lateral sealing width of the packaging bag. A slitter device for slitting a wide film into a plurality of packaging films;
A vertical sealing device and a horizontal sealing device that form a packaging bag by vertically sealing and laterally sealing the plurality of packaging films into a cylindrical shape, and
A filling device that fills the packaging material (contents) in the packaging bag;
A lateral sealing device that seals the filling port of the packaging bag filled with the material to be packaged (contents) and conveys the packaging bag downward;
A vertical multi-row automatic wrapping machine provided with an R cutter device that performs R-cutting on the lateral seal portion of the transported packaging bag to form an individual packaging bag,
The cutter part of the R cutter device includes a punching die receiving blade (female blade) having a planar structure, a cutting blade (male blade) that is fitted into the cutting blade, and an air cylinder that drives the cutting blade.
The cutting edge of the cutting blade is composed of both end members having a thickness in the short-side direction and a central member in the longitudinal direction having a curved thickness from the both end members, and is substantially H-shaped when viewed from the cutting edge direction. Have
The longitudinal shape of the cutting edge in the cutting blade is a straight line having a constant inclination from one end to the other end in the longitudinal direction of the cutting blade,
The shape in the short direction of the cutting edge in the cutting blade is a straight line having a constant inclination from one end to the other end in the short direction of the cutting blade ,
R cutter device of the vertical multi-row automatic packaging machine, wherein a cutting edge width of the central member of the substantially H-shaped cut edge, the same as to Rukoto lateral sealing width of the packaging bag.

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