JP2016135513A - Cutter blade, cutter device, package machine, and package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate opening of a package.SOLUTION: A cutter device 100 comprises: a first blade 120 which cuts a package film YA1 continuous to a first direction, in a second direction being orthogonal to the first direction for forming a package ZA1, and which is disposed on one side of the package film YA1 and extends in the second direction; a second blade 160 disposed on the other side of the package film YA1, extends in the second direction, and faces the first blade 120; a movement device 180 for making first blade 120 and the second blade 160 approach each other, and separating them; and an oscillation generation device 170 for relatively oscillating both when the first blade 120 and the second blade 160 approach each other, and melting the package film YA1. On a position corresponding to an upper part or the vicinity of a melting line TOL of the package film YA1 on at least one of the first blade 120 and the second blade 160, tear portion forming means 162 capable of tearing the package ZA1, from the melting line TOL to the first direction, is formed.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a cutter device (end seal device) for cutting a packaging film, a packaging machine including the cutter device, and the like.

  In a packaging machine that pillow-wraps articles such as foods and daily necessities, articles are supplied one after another to the packaging machine, and these articles are individually pillow-wrapped by a packaging film to produce a package.

  The packaging machine includes a bag making machine, a center seal device, a cutter device, and the like. In the bag making machine, the packaging film is sequentially fed out from the raw fabric and continuously supplied in accordance with the sequential supply of articles, and the packaging film is formed into a cylindrical shape. In the center seal device, the packaging film is formed into a cylindrical shape, and both end edges in the width direction (center seal portion) overlapped with each other are heated by being sandwiched between a pair of bar sealers and pressurized with a press roller, (Vertical seal) is performed. In the cutter device, for each pitch according to the length of the article, cutting is performed in the width direction of the cylindrical packaging film to produce a package. In the cutter device, end sealing (lateral sealing) is also performed in order to ensure airtightness of the package. Therefore, the cutter device may be called an end seal device (or top seal device).

  A conventional cutter device has a pair of sealers that are arranged on both sides of a cylindrical packaging film to perform end sealing, a drive device that drives the pair of sealers to approach and separate, and a packaging that is independent of the sealer. It has a cutter blade that approaches and separates from the film. The pair of sealers are heated by a built-in heater, and end seal by sandwiching the packaging film. The cutter blade approaches the vicinity of the end seal of the packaging film and cuts the packaging film to form individual packaging bodies. This cutter blade is generally cut by pressing a sharp blade edge against the packaging film, but sandwiching the packaging film by placing the cutter blade and the receiving blade facing each other, and applying vibration to the cutter blade And the structure cut | disconnected while welding a packaging film is also proposed (refer patent document 1).

JP 2006-36328 A

  Since the cutter apparatus of patent document 1 becomes a structure cut | disconnected while welding a packaging film with a cutter blade, a cut surface becomes thickness by a melting process. Since the conventional cutter blade is a straight blade, the thick portion extends linearly, so that there is a problem that tools such as scissors are essential when opening the package.

  In addition, since the cutter device needs to move the sealer with a built-in heater and the cutter blade with a built-in vibration generator independently, there is a problem that the entire cutter device becomes complicated and lacks maintenance. there were.

  This invention is made | formed in view of the said subject, and it aims at providing the cutter apparatus and packaging machine which can make airtightness and openability compatible in a package.

  (1) The present invention is a cutter blade that cuts a packaging film continuous in a first direction in a second direction perpendicular to the first direction to form a packaging body, and the other side blade by the vibration generator And relatively tearing the package body in the first direction from the fusing line at a position corresponding to the fusing line of the packaging film or in the vicinity of the fusing line. It is a cutter blade characterized by having a tear location forming means.

  (2) The present invention is a cutter device that cuts a packaging film continuous in a first direction into a packaging body by cutting in a second direction perpendicular to the first direction, and is arranged with the packaging film in between. A first blade extending in the second direction, a second blade, a moving device for moving the first blade and the second blade toward and away from each other, and the first blade and the second blade in a state in which the first blade and the second blade are close to each other. Corresponding to the vibration line of the packaging film or the vicinity of the fusing line in at least one of the first blade and the second blade, and a vibration generator for fusing the packaging film by relatively vibrating the blade and the second blade And a tearing portion forming means that enables tearing of the package body in the first direction from the fusing line.

  (3) The present invention is also characterized in that the tear location forming means has a tear location forming protrusion that forms a thin portion or a split portion extending in a direction different from the second direction with respect to the packaging film. The cutter device according to (2) above.

  (4) The present invention is also the cutter device according to (3) above, wherein the tearing portion forming protrusion is formed at a location continuous with the fusing line of the packaging film.

  (5) The present invention is also the cutter device according to (3) above, wherein the tearing portion forming protrusion is formed at a location away from the fusing line of the packaging film.

  (6) The present invention is also the cutter device according to any one of (3) to (5), wherein the tearing portion forming protrusion extends in the first direction.

  (7) The present invention is also the cutter device according to any one of (3) to (6) above, wherein a plurality of the tearing portion forming protrusions are arranged in the second direction.

  (8) In the present invention, any one of the above (2) to (7), wherein the tearing portion forming means has a bending point forming protrusion that forms a bending point on the fusing line of the packaging film. It is a cutter apparatus as described in.

  (9) According to the present invention, at least one of the first blade and the second blade is formed with a saw blade-like projection so that the fusing line of the packaging film has a saw blade shape. The cutter device according to (8) above, wherein a bending region corresponding to a peak or valley of a saw blade in the protrusion is the bending point forming protrusion.

  (10) The present invention is also characterized in that the tearing portion forming means has a dot-forming protrusion that forms a dot-like thin portion or a dividing portion in the vicinity of the fusing line of the packaging film. It is a cutter apparatus in any one of thru | or (9).

  (11) According to the present invention, at least one of the first blade and the second blade is formed with a linear protrusion that forms a fusing line on the packaging film, and at least the first blade and the second blade Any one of the above, wherein a pair of band-shaped sealing surfaces are formed on both outer sides in the first direction with respect to the fusing line to seal the package in a band shape in the second direction. (2) It is a cutter apparatus in any one of (10).

  (12) In the present invention, a planar receiving blade region is formed on either the first blade or the second blade facing the linear protrusion, and the first blade facing the belt-shaped sealing surface The cutter device according to (11), wherein a seal surface facing region is formed on either of the second blades.

  (13) In the present invention, when the linear protrusion and the receiving blade region abut, a gap having a thickness equal to or less than a thickness in the sealing direction of the packaging film is provided between the belt-shaped sealing surface and the sealing surface facing region. Is formed by the cutter device according to (12) above.

  (14) The cutter device according to (13), wherein the gap is 0.2 mm or less.

  (15) In the present invention, the linear protrusion and the belt-shaped sealing surface are formed on one of the first blade and the second blade, and the linear protrusion is in the approaching direction with respect to the belt-shaped sealing surface. The cutter device according to any one of (11) to (14) above, wherein

  (16) The present invention includes a supply device that supplies a packaging film, a bag making device that forms the tubular film by bending the packaging film supplied from the supply device in a width direction, and downstream of the bag making device. Any of the above (2) to (15), wherein a center seal device that performs center sealing on the packaging film formed in a cylindrical shape, and the center-sealed packaging film is cut in the width direction at a predetermined interval. And a cutter device according to claim 1.

  (17) The present invention provides a top seal on the edge obtained by sealing and cutting the edge in the first direction of the packaging film that is cylindrical in the first direction in a direction perpendicular to the first direction. The cutting line of the top seal part is sealed by fusing by vibration, and the fusing line is formed on the cutting line or in the vicinity of the cutting line by welding by the vibration. The package is characterized in that a tearing portion that allows tearing of the package in the first direction is formed.

  ADVANTAGE OF THE INVENTION According to this invention, while improving the sealing performance of a package body, opening can be made easy.

It is the schematic of the packaging machine which concerns on 1st embodiment of this invention. It is the external appearance perspective view which looked at the package from the lower part. Regarding the cutter device employed in the packaging machine, (A) is a front view with the first blade and the second blade separated, (B) is a front view with the first blade and the second blade approaching, ( C) is a side cross-sectional view of the first blade and the second blade in a separated state, and (D) is a side cross-sectional view of the first blade and the second blade in an approaching state. The first blade and the second blade of the cutter device are shown enlarged, (A) is a front view of the separated state before the film cut, (B) is a front view of the approaching state during the film cut, (C) is the film cut It is a front view of the back separation state. (A) is a plan view of the second blade, (B) is a perspective view of the second blade. (A) is a top view which expands and shows the top seal part of a package, (B) is a BB arrow expanded sectional view of (A). Regarding the cutter device of the second embodiment of the present invention, (A) is a plan view of the second blade, (B) is an enlarged plan view showing the top seal portion of the package, and (C) is (B It is a CC arrow expanded sectional view of). (A) is a top view of a 2nd blade regarding the cutter apparatus of the other example of 2nd embodiment of this invention, (B) is a top view which expands and shows the top seal part of a package. (A) is a top view of a 2nd blade, (B) is a top view which expands and shows the top seal part of a package regarding the cutter apparatus of 3rd embodiment of this invention. (A) is a top view of a 2nd blade regarding the cutter apparatus of the other example of 3rd embodiment of this invention, (B) is a top view which expands and shows the top seal part of a package. (A) is a top view of a 2nd blade regarding the cutter apparatus of the other example of 4th embodiment of this invention, (B) is a top view which expands and shows the top seal part of a package. Regarding the cutter device of another example of the fifth embodiment of the present invention, (A) is a plan view of the second blade, (B) is a perspective view of the second blade, and (C) is an enlarged top seal portion of the package. It is a top view shown. (A) And (B) is a front view which expands and shows the 1st blade and 2nd blade of the cutter apparatus of the other example of embodiment of this invention.

  Hereinafter, the configuration of the packaging machine 1 according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of the packaging machine 1. In addition, in this figure and each subsequent figure, one part structure is abbreviate | omitted suitably and drawing is simplified. And in this figure and each subsequent figure, the magnitude | size, shape, thickness, etc. of a member are exaggerated suitably and expressed.

  The packaging machine 1 shown in FIG. 1 is used in a line for sequentially packaging articles XA1 such as food and daily necessities with a packaging film YA1. The packaging machine 1 includes an article supply device 2, a film supply device 3, a packaging machine body 4, a control unit (not shown), and the like.

  Each part of the packaging machine 1 is centrally controlled by the control unit. The control unit includes a CPU, a RAM, a ROM, and the like, and executes various controls. The CPU is a so-called central processing unit, and various programs are executed to realize various functions. The RAM is used as a work area for the CPU. The ROM stores a basic OS and programs executed by the CPU.

  The article supply device 2 conveys the article XA1 at regular intervals and sequentially conveys the article XA1 to the downstream packaging machine body 4. This article supply apparatus 2 is configured by a finger conveyor. Specifically, the article supply device 2 includes a conveyance surface (not shown) having a slit, a side guide (not shown) for guiding the article XA1 on the conveyance surface from the side, a driving sprocket 5, and a driven member. Sprockets (not shown), an annular chain 6 running over the sprockets, a plurality of fingers 7 attached to the chain 6 at equal intervals, and a servo motor (not shown) as a power source (Omitted).

  The drive sprocket is rotated by the drive of the servo motor. The driven sprocket 5 rotates in conjunction with the driving sprocket as the chain 6 travels. The chain 6 travels so as to circulate by the rotation of the driving sprocket. The plurality of fingers 7 protrude upward from below the conveyance surface via the slits. The plurality of fingers 7 travel on the conveying surface by the travel of the chain 6. Accordingly, the plurality of fingers 7 push the article XA1 on the transport surface and send it out to the packaging machine body 4.

  The film supply device 3 continuously supplies the packaging film YA1 to the downstream packaging machine body 4. The film supply device 3 includes an original fabric shaft 8, a servo motor (not shown), guide rollers 9a and 9b, and the like. The original fabric shaft 8 holds the original fabric roll YB1 rotatably. The original fabric shaft 8 rotates when power is applied to the servo motor, and rotates the original fabric roll YB1 being held. Thereby, the packaging film YA1 is fed out (stretched) from the original fabric roll YB1. The guide rollers 9a and 9b appropriately change the transport direction of the raw fabric roll YB1 and guide it to the packaging machine body 4 side.

  In addition, as a method of feeding out the packaging film YA1 from the original fabric roll YB1, instead of adopting the original fabric driving method as described above, a feed roller is separately provided, and the feed roller is moved to draw out the packaging film YA1. A driving method may be adopted.

  The packaging machine body 4 wraps the article XA1 supplied from the article supply device 2 with the packaging film YA1 supplied from the film supply device 3. Specifically, the packaging machine body 4 includes a bag making device 14, a pinch roller 15, a center seal device 16, a first transport device 17, an upper holding device 18, and a cutter device (end seal device) 100. , A second transport device 20 and the like.

  The bag making device 14 forms the packaging film YA1 supplied from the film supply device 3 into a cylindrical shape so that both end edges in the width direction overlap each other. In addition, the bag making device 14 supplies the article XA1 supplied from the article supply device 2 to the packaging film YA1 that is manufactured in a cylindrical shape. As a result, the article XA1 is wrapped in the packaging film YA1 formed into a cylindrical shape. That is, the bag making device 14 functions as a bag making device that forms the tubular film by bending the packaging film YA1 in the width direction.

  The pinch roller 15 sandwiches both end edges of the packaging film YA1 that overlap each other (hereinafter referred to as a center seal portion CE1 (see FIG. 2)), and applies a conveying force to the center seal portion CE1.

  The center seal device 16 includes a pair of bar sealers 16a and a press roller 16b. The center seal device 16 heats the center seal portion sandwiched between a pair of bar sealers 16a. The center seal device 16 performs center sealing by pressing the heated center seal portion with the press roller 16b. That is, the center seal device 16 performs center seal on the packaging film YA1 formed in a cylindrical shape downstream of the bag making device 14. Note that a rotary center seal device that heats the center seal portion with a pair of rollers or a plurality of rollers may be used.

  The first transport device 17 transports the center-sealed cylindrical packaging film YA1 along with the article XA1 wrapped in the packaging film YA1 on the transport surface (reference numeral omitted) toward the cutter device 100. The first transport device 17 expands and contracts the transport surface in the transport direction in accordance with the box motion of the cutter device 100. In addition to the box motion, a rotary or linear reciprocating cutter device may be used.

  The upper restraining device 18 is disposed above the first transport device 17 and restrains the article XA1 transported to the first transport device 17 from above with the packaging film YA1. Thereby, the article XA1 is conveyed while maintaining the horizontal state.

  The cutter device 100 performs a top seal (end seal, lateral seal) and a cut in the width direction of the packaging film YA1 for each pitch according to the length of the article XA1. Thereby, package ZA1 (refer FIG. 2) is manufactured. That is, the cutter device 100 performs sealing and cutting in the width direction at predetermined intervals on the center-sealed packaging film YA1.

  As shown in FIGS. 3A and 3C, the cutter device 100 includes a first cutter unit 110 disposed on the upper side, a second cutter unit 150 disposed on the lower side, and a moving device that relatively moves them. 180. The first cutter unit 110 and the second cutter unit 150 are arranged so as to face both sides of the packaging film YA1, and are moved toward and away from each other by the moving device 180.

  This approach / separation operation can be moved by, for example, a movement trajectory of box motion. Specifically, while the first cutter unit 110 and the second cutter unit 150 approach and sandwich the packaging film YA1, and move from the upstream to the downstream by a predetermined distance so as to follow the conveyance direction of the packaging film YA1. Seal and cut. Thereafter, the first cutter unit 110 and the second cutter unit 150 are separated from the packaging film YA1, and further moved from the downstream to the upstream by a predetermined distance to return to the original positions. By repeating these operations, the packaging film YA1 is repeatedly sealed and cut.

  The first cutter unit 110 is fixed to the first base 112, the first fixing base 114 that is disposed on the packaging film YA1 side with respect to the first base 112 and holds the cutter, and the first fixing base 114. The first blade 120 is provided. The first fixed base 114 is disposed on the first base 112 via a slide shaft 114A that is slid, and is perpendicular to the surface of the packaging film YA1 with respect to the first base 112, that is, the second cutter unit. 150 can be moved back and forth in the direction of approaching and moving away from 150. The first fixing base 114 is always urged toward the packaging film YA1 with respect to the first base 112 by an urging member 114B such as a tension spring or an air spring using an air cylinder.

  The second cutter unit 150 is fixed to the second base 152, the second fixing base 154 that is disposed on the packaging film YA1 side with respect to the second base 152 and holds the cutter, and the second fixing base 154. The second blade 160 is provided. The second fixed base 154 is disposed on the second base 152 via the vibration generator 170, and transmits the vibration of the vibration generator 170 to the second blade 160. This vibration mainly vibrates in the direction perpendicular to the surface of the packaging film YA1, that is, in the approaching / separating direction from the first cutter unit 110, but may be vibrated in the surface direction, and in both the surface vertical direction and the surface direction. It may be vibrated. There are a variety of vibration generation methods of the vibration generator 170, and, for example, one that generates ultrasonic (for example, about 15 to 50 kilohertz) vibration using a piezoelectric element or the like can be selected. In any case, the packaging film YA1 is sealed and cut by the clamping force fluctuation generated between the first blade 120 and the second blade 160 by the relative vibration and the frictional heat generated in the cylindrical packaging film YA1. A preferred form of the vibration generator 170 is a structure that generates ultrasonic vibrations. For example, the piezoelectric element is sandwiched between a pair of metal horns and fastened with bolts, and an AC voltage is applied to the piezoelectric element, thereby the tip of the metal horn. Is vibrated ultrasonically. The vibration generator 170 may be disposed on the first blade 120 side, or may be disposed on both the first blade 120 and the second blade 160.

  As shown in FIGS. 3B and 3D, when the first cutter unit 110 and the second cutter unit 120 approach each other, the first blade 120 and the second blade 160 abut against the packaging film YA1. When the first cutter unit 110 and the second cutter unit 120 further approach each other, the first blade 120 of the first cutter unit 110 is pushed into the first base 112 side against the urging force of the urging member 114B. An appropriate clamping force is generated between the one blade 120 and the second blade 160. At the same time, the packaging film YA1 is sealed and cut by the relative vibration of the second blade 160 and the first blade 120 by the vibration generator 170.

  Next, the structure of the first blade 120 and the second blade 160 will be described.

  As shown in FIG. 4A, the first blade 120 has a receiving surface 122 that is parallel to the packaging film YA1 and extends in the transport width direction of the packaging film YA1 (this is defined as the second direction). The receiving surface 122 includes a receiving blade region 122 </ b> A that faces the linear protrusion 162 of the second blade 160 and a seal surface facing region 122 </ b> B that faces the belt-like seal surface 168 of the second blade 160.

  The second blade 160 has a linear projection 162 that forms a fusing line on the packaging film YA1 and cuts it in the second direction, and the conveyance direction of the packaging film YA1 with respect to the linear projection 162 (this is defined as the first direction). A pair of belt-shaped sealing surfaces 168 disposed on both outer sides. The band-shaped sealing surface 168 is a plane that is parallel to the plane of the packaging film YA1 and extends in the second direction, and seals the packaging film YA1 in a band shape in the second direction.

  As shown in FIGS. 5A and 5B, when the linear protrusion 162 is viewed in a plan view, a peak portion 162A serving as a protruding end extends in a saw blade shape toward the second direction. As a result, as shown in FIG. 6 (A), the fusing line TOL of the top seal part TO1 of the package ZA1 from which the packaging film YA1 has been cut has a saw blade shape. In the present embodiment, since the packaging film YA1 can be melted by ultrasonic vibration, the tip of the ridge 162A is rounded or formed with a micro-plane to the packaging film YA1. It is preferable that a predetermined frictional force can be applied. As a result, the end face of the fusing line TOL is also sealed, and the sealing performance of the package ZA1 can be improved.

  Returning to FIG. 5, the second blade 160 further includes a tearing portion forming means 164. This tear location forming means 164 forms a tear point (bending point) TOK that enables tearing of the packaging film YA1 from the fusing line TOL toward the first direction with respect to the top seal portion TO1 of the package ZA1. Specifically, the tearing portion forming means 164 of the present embodiment becomes a bent region 165 (a region bent in the first direction along the second direction) of the sawtooth-shaped peak portion 162A of the linear protrusion 162, and this bent region 165 can also be defined as a bending point forming protrusion for forming a bending point on the fusing line TOL.

  As described above, when the bending point TOK (see FIG. 6) is formed on the fusing line TOL of the top seal portion TO1 by the tearing portion forming means 164, the packaging film YA1 can be torn therefrom. The inflection point TOK preferably has a V shape of less than 120 °. Although not particularly shown here, the concept of the saw blade shape in the present invention includes a so-called notch shape in which a part of the peak portion 162A includes a linear region extending in parallel with the second direction.

  Returning to FIG. 4A, the linear protrusion 162 of the second blade 160 protrudes in the approaching direction of the packaging film YA <b> 1 with respect to the belt-shaped seal surface 168. This protrusion amount C is set to the seal thickness in the sealing direction of the top seal portion TO1 of the packaging film YA1, and is specifically set to 0.2 mm or less, preferably about 0.1 mm. Thus, by setting the protrusion amount C to the seal thickness of the packaging film YA1, as shown in FIG. 4B, when the packaging film YA1 is cut by the linear protrusion 162 and the receiving blade region 122A, the second Pressure can be applied to the packaging film YA1 by the belt-shaped sealing surface 168 of the blade 160 and the sealing surface facing region 122B of the first blade 120. As a result, at least in the state of FIG. 4B, by applying ultrasonic vibration relatively between the first blade 120 and the second blade 160, as shown in FIG. As a result, the packaging film YA1 is cut (melted), and at the same time, a pair of top seal portions TOL are formed by the frictional force generated by pressing and vibration of the belt-shaped seal surface 168 and the seal surface facing region 122B. In addition, the protrusion amount (seal thickness) of the linear protrusion 162 is set smaller than the thickness of the top seal portion TO1 before sealing. That is, the top seal portion TO1 is sealed while being crushed.

  According to the packaging machine 1 and the cutter device 100 of the present embodiment, when the packaging film YA1 is fused by the vibration of the linear protrusion 162 of the second blade 160, the tearing line of the top seal portion TO1 is formed by the tearing portion forming means 164. A tear point (bending point) TOK is formed in the TOL. In the case of fusing by ultrasonic vibration, a linear seal portion TOC1 is formed in the vicinity of the fusing line TOL. Therefore, since the package ZA1 is sealed with a double structure of the strip-shaped seal portion TOC2 formed by the strip-shaped seal surface 168 and the like and the linear seal portion TOC1, the airtightness of the contents can be improved.

  Further, as shown in FIG. 6 (B), the packaging film YA1 fusing line TOL is thicker than the other parts, and the cross-sections of the pair of packaging films YA1 are integrated (welded). The inflection point TOK corresponding to the trough of the shape tends to be particularly thick even in the fusing line TOL. At the time of the tearing work by the user, the tearing force by the hand can be easily concentrated on the bending point TOK and can be torn from the bending point TOK corresponding to the saw-tooth shaped valley. Therefore, according to the present embodiment, both airtightness and openability can be achieved.

  Furthermore, in this cutter device 100, since both the linear protrusion 162 and the belt-like seal surface 168 are vibrated ultrasonically, sealing and cutting are simultaneously performed, the device configuration can be simplified. In addition, the linear protrusion 162 and the belt-like seal surface 168 are integrated (this is not limited to the case where the members are completely integrated, but also includes integration in a state where they are fixed and not relatively moved). The shape accuracy of the top seal part TO1 of the body XA1 can be increased. Although the case where the packaging film YA1 is cut and sealed only by ultrasonic vibration is illustrated here, the first blade 120 and the second blade 160 may be heated in addition to this. Of course, only the linear protrusion 162 can be ultrasonically vibrated and cut by vibration, and the band-shaped seal surface 168 can be thermally welded by conventional heater heating.

  Next, a packaging machine and a cutter device according to a second embodiment of the present invention will be described with reference to FIG. In addition, since the structure of the first blade and the second blade (mainly the second blade) is different from that of the first embodiment after the second embodiment, the description will focus on the description of the first blade or the second blade, Illustration and description of the entire structure of the packaging machine and the cutter device are omitted.

  As shown in FIG. 7 (A), the second blade 260 of the cutter device of the second embodiment includes a linear protrusion 262 that forms a fusing line on the packaging film YA1 and cuts it in the second direction, and this linear shape. A pair of strip-shaped sealing surfaces 268 are disposed on both sides in the first direction with respect to the protrusion 262. When the linear protrusion 262 is viewed in a plan view, a peak portion 262A serving as a protrusion extends in a saw blade shape toward the second direction. As a result, as shown in FIG. 7 (B), the fusing line TOL of the top seal part TO1 of the package ZA1 in which the packaging film YA1 is cut has a saw blade shape.

  Returning to FIG. 7A, the second blade 260 further has a tearing portion forming means 264. The tear location forming means 264 becomes a tear location forming protrusion 265 that forms a dividing portion TOB extending in a direction (here, the first direction) different from the second direction (conveyance width direction) with respect to the packaging film YA1. The tearing portion forming protrusion 265 is continuously formed at a location continuous with the fusing line TOL of the packaging film, particularly at a trough of the fusing line TOL. That is, the tearing portion forming protrusion 265 continues in a first direction so as to branch from the sawtooth-shaped peak or valley of the linear protrusion 262. Accordingly, when the second blade 260 is viewed in plan, the Y-shaped peaks are alternately arranged. Here, the case where the tearing portion forming projection 265 extends in parallel with the first direction is illustrated, but it is also possible to extend in a direction inclined with respect to the first direction.

  According to the cutter device according to the second embodiment, as shown in FIG. 7C, the top seal part TO1 of the package ZA1 is provided with the parting part TOB extending in the first direction continuously to the fusing line TOL. Can be formed. This division | segmentation part TOB becomes a groove | channel extended in a 1st direction, and the thick part by melting packaging film YA1 is formed in the both sides. The tearing force by the hand can be concentrated on the tearing portion TOK located at the innermost part of the dividing portion TOB, and can be easily opened. Moreover, the height of the thick part of the tearing part TOK located in the innermost part of the dividing part TOB is lower than the maximum thick part of the trough part of the saw blade shape in FIG. Therefore, the package cut by the cutter device of the second embodiment can be opened more easily than the cutter device of the first embodiment.

  In the second embodiment, the case where the tearing portion forming projection 265 is continuously formed on the sawtooth-shaped peak or valley of the linear projection 262 is exemplified, but the present invention is not limited to this. For example, as shown in FIG. 8A, a tearing portion forming projection 265 may be arranged with a predetermined gap in the first direction from a sawtooth-shaped peak or valley of the linear projection 262. Accordingly, when the second blade 260 is viewed in plan, a sawtooth-shaped peak extending in the second direction and an I-shaped peak extending independently in the first direction are arranged. If it does in this way, as shown in FIG.8 (B), the parting part TOB extended in a 1st direction can be formed in the position a little away from the fusing line TOL of the top seal part TO1 of the package ZA1. This division | segmentation part TOB becomes a groove | channel extended in a 1st direction, and the thick part by melting packaging film YA1 is formed in the both sides. Therefore, when the top seal portion TOL is slightly torn from the tearing point (bending point) TOK, it reaches the dividing portion TOB, and is combined with the reinforcing effect of the thick portion of the dividing portion TOB, and is located at the innermost part of the dividing portion TOB. Can be easily opened from the tearing portion TOK.

  Next, a packaging machine and a cutter device according to a third embodiment of the present invention will be described with reference to FIG. As shown in FIG. 9A, the second blade 360 of the cutter device of the third embodiment includes a linear protrusion 362 that forms a fusing line on the packaging film YA1 and cuts it in the second direction, and this linear shape. A pair of strip-shaped sealing surfaces 368 are disposed on both sides in the first direction with respect to the protrusion 362. When the linear protrusion 362 is viewed in a plan view, a peak portion 362A serving as a protrusion extends linearly in the second direction. As a result, as shown in FIG. 9 (B), the fusing line TOL of the top seal part TO1 of the package ZA1 from which the packaging film YA1 is cut is linear.

  Returning to FIG. 9A, the second blade 360 further has a tearing portion forming means 364. The tear location forming means 364 becomes a tear location forming projection 365 that forms a split portion TOB extending in a direction (here, the first direction) different from the second direction (conveyance width direction) with respect to the packaging film YA1. A plurality of tearing portion forming protrusions 365 are formed at regular intervals in the second direction so as to be continuous with the fusing line TOL of the packaging film. That is, the tearing portion forming protrusion 365 is continuous with the linear protrusion 362 and extends in the first direction so as to branch therefrom. Therefore, when the second blade 360 is viewed in plan, the T-shaped peaks are alternately arranged. The T-shaped peak may be a cross-shaped (plus-shaped) peak.

  According to the cutter apparatus which concerns on this 3rd embodiment, the parting part TOB extended in a 1st direction following the fusing line TOL can be formed in the top seal part TO1 of package ZA1. This division | segmentation part TOB becomes a groove | channel extended in a 1st direction, and the thick part by melting packaging film YA1 is formed in the both sides. Therefore, in combination with the reinforcing effect of the thick part, the tearing force by the hand can be concentrated on the tearing part TOK located at the innermost part of the dividing part TOB and can be easily opened.

  In the third embodiment, the case where the tearing portion forming protrusion 365 is continuously formed on the linear protrusion 362 is illustrated, but the present invention is not limited to this. For example, as shown in FIG. 10A, a tearing portion forming protrusion 365 may be arranged with a predetermined gap from the linear protrusion 362 in the first direction. Accordingly, when the second blade 260 is viewed in plan, a linear peak extending in the second direction and an I-shaped peak extending independently in the first direction are arranged. If it does in this way, as shown to FIG. 10 (B), the parting part TOB extended in a 1st direction can be formed in the position a little away from the fusing line TOL of the top seal part TO1 of the package ZA1. This division | segmentation part TOB becomes a groove | channel extended in a 1st direction, and the thick part by melting packaging film YA1 is formed in the both sides. Therefore, when the top seal portion TOL is torn a little, it reaches the dividing portion TOB and can be easily opened from the tearing portion TOK located at the innermost part of the dividing portion TOB, together with the reinforcing effect of the thick portion of the dividing portion 10B. .

  Next, a packaging machine and a cutter device according to a fourth embodiment of the present invention will be described with reference to FIG. As shown in FIG. 11 (A), the second blade 460 of the cutter device of the fourth embodiment includes a linear protrusion 462 that forms a fusing line on the packaging film YA1 and cuts it in the second direction, and this linear shape. A pair of strip-shaped sealing surfaces 468 disposed on both sides in the first direction with respect to the protrusion 462 are provided. When the linear protrusion 462 is viewed in plan, the ridge portion 462A serving as a protrusion extends linearly in the second direction. As a result, as shown in FIG. 11 (B), the fusing line TOL of the top seal part TO1 of the package ZA1 in which the packaging film YA1 is cut is linear.

  Returning to FIG. 11A, the second blade 460 further has a tearing portion forming means 464. The tearing portion forming means 464 becomes a dot forming protrusion 466 that forms a dot-shaped cut portion TOD in the vicinity of the fusing line TOL of the packaging film YA1. A plurality of the dot forming protrusions 466 are arranged so as to spread on the surface, that is, with an interval in both the first direction and the second direction. Of course, some of the dot formation protrusions 466 may be formed continuously (overlapping) with the linear protrusions 462.

  According to the cutter device according to the fourth embodiment, the dot-shaped dividing portion TOD can be formed around the fusing line TOL of the top seal portion TO1. By forming the dividing part TOD densely, the vicinity of the fusing line TOL becomes weak and can be easily torn. Moreover, since the circumference | surroundings of each dot-shaped parting part TOD are each sealed by welding, it becomes possible to improve a sealing property further, weakening with respect to tearing strength.

  Next, a packaging machine and a cutter device according to a fifth embodiment of the present invention will be described with reference to FIG. As shown in FIG. 12 (A), the second blade 560 of the cutter device of the fifth embodiment includes a linear protrusion 562 that forms a fusing line on the packaging film YA1 and cuts it in the second direction, and this linear shape. A pair of strip-shaped sealing surfaces 568 disposed on both sides in the first direction with respect to the protrusion 562 are provided. When the linear protrusion 562 is viewed in a plan view, a peak portion 562A serving as a protrusion extends in a saw blade shape toward the second direction.

  The second blade 560 further has a tear point forming means 564. The tear location forming means 564 becomes a tear location forming projection 565 that forms a thin portion TOU extending in a direction (here, the first direction) different from the second direction (conveyance width direction) with respect to the packaging film YA1. Specifically, as shown in FIG. 12B, the height difference is set so that the protruding end 565A of the tearing portion forming protrusion 565 is slightly separated from the packaging film YA1 rather than the peak portion 562A of the linear protrusion 562. The As a result, when the ridge portion 562A of the linear protrusion 562 is brought into contact with the first blade (not shown), a gap is formed between the tearing portion forming protrusion 565 and the first blade (not shown). As a result, as shown in FIG. 12C, the thin portion TOU is formed on the packaging film YA1 by the tearing portion forming protrusion 565. Since the thin portion TOU becomes weaker than other portions, it can be easily torn. In addition, also in the example shown in 4th embodiment from 1st embodiment, it is not restricted to the case where packaging film YA1 is completely parted by a tearing part formation protrusion, It is good also as a thin part.

  In the above first to fifth embodiments of the present invention, the case where both the linear protrusion and the tearing portion forming means are arranged with respect to the second blade is exemplified, but one of the first blade and the second blade It is also possible to form linear protrusions on the other side and to arrange tearing portion forming means on the other side. Moreover, although the case where a linear protrusion and a strip | belt-shaped sealing surface are arrange | positioned with respect to the 2nd blade was illustrated, for example, as shown to FIG. 13 (A), it is linear at one of the 1st blade 120 and the 2nd blade 160 The protrusion 162 may be formed, and the band-shaped seal surface 168 may be formed to protrude on the other side.

  Moreover, in the said embodiment, although the case where the clearance gap of a 1st direction was formed between the linear protrusion formed in a 2nd blade and a strip | belt-shaped seal surface was illustrated, this invention is not limited to this, For example, FIG. As shown in (B), on one of the first blade 120 and the second blade 160, the belt-like sealing surface 168 and the linear protrusion 162 can be arranged in an overlapping manner.

  Furthermore, in the said embodiment, the length of the 1st direction of the strip | belt-shaped seal part TOC2 can be set suitably. Moreover, the strip | belt-shaped seal | sticker part TOC2 may be provided with two or more, and may be a curvilinear seal other than a linear seal.

  In the above embodiment, the vibration generating device that generates ultrasonic vibration is illustrated, but instead, a device that generates low-frequency (for example, about 100 to 300 hertz) vibration using an air vibrator or the like is used, and The at least one blade may be heated and melted.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea thereof. That is, in the above embodiment, the position, size, length, shape, material, orientation, and the like of each component can be changed as appropriate.

  For example, in the above-described embodiment, the case where the film is transported horizontally (horizontal direction) and sealed and cut from the vertical vertical direction by the cutter device is illustrated, but the present invention is not limited thereto, and the film is not limited thereto. Can be conveyed in the vertical vertical direction, and can be sealed and cut by approaching and separating in the horizontal direction by a cutter device.

DESCRIPTION OF SYMBOLS 1 Packaging machine 3 Film supply apparatus 9a, 9b Guide roller (roller)
14 Bag making machine (bag making device)
16 Center seal device 100 Cutter device 110 First cutter unit 120 First blade 122 Receiving surface 122A Receiving blade region 122B Sealing surface facing region 150 Second cutter unit 160, 260, 360, 460, 560 Second blade 162, 262, 362 , 462, 562 Linear protrusions 164, 264, 364, 464, 564 Tear location forming means YA1 film TO1 Top seal part TOL Fusing line

Claims (17)

A cutter blade that cuts a packaging film continuous in a first direction into a packaging body by cutting in a second direction perpendicular to the first direction,
The vibration generator relatively ultrasonically vibrates with the counterpart blade, and at the position corresponding to the fusing line of the packaging film or near the fusing line, from the fusing line toward the first direction. It has a tear location forming means that enables tearing of the package,
Cutter blade. A cutter device for cutting a packaging film continuous in a first direction into a packaging body by cutting in a second direction perpendicular to the first direction,
A first blade that is arranged across the packaging film and extends in the second direction, and a second blade;
A moving device for moving the first blade and the second blade closer to and away from each other;
A vibration generator for fusing the packaging film by relatively vibrating the first blade and the second blade in a state where the first blade and the second blade are close to each other;
At least one of the first blade and the second blade is formed at a position corresponding to the fusing line of the packaging film or the vicinity of the fusing line, and tears the packaging body from the fusing line toward the first direction. Tearing means forming means that enables;
Characterized by comprising,
Cutter device. The tear location forming means has a tear location forming protrusion that forms a thin portion or a split portion extending in a direction different from the second direction with respect to the packaging film.
The cutter device according to claim 2. The tear location forming protrusion is formed at a location continuous with the fusing line of the packaging film,
The cutter device according to claim 3. The tearing portion forming protrusion is formed at a location away from the fusing line of the packaging film,
The cutter device according to claim 3. The tearing portion forming protrusion extends in the first direction,
The cutter device according to any one of claims 3 to 5. A plurality of the tearing portion forming protrusions are arranged in the second direction,
The cutter apparatus in any one of Claim 3 thru | or 6. The tear location forming means has a bending point forming projection for forming a bending point on the fusing line of the packaging film,
The cutter apparatus in any one of Claim 2 thru | or 7. At least one of the first blade and the second blade is formed with a saw blade projection such that the fusing line of the packaging film has a saw blade shape,
The bending region corresponding to the crest or trough of the saw blade in the saw blade protrusion is the bending point forming protrusion,
The cutter device according to claim 8. The tear location forming means has a dot-forming protrusion that forms a dot-like thin portion or a split portion in the vicinity of the fusing line of the packaging film,
The cutter apparatus in any one of Claim 2 thru | or 9. At least one of the first blade and the second blade is formed with a linear protrusion that forms a fusing line on the packaging film,
A pair of belt-shaped sealing surfaces that are disposed on at least one of the first blade and the second blade on both outer sides in the first direction with respect to the fusing line and seal the package body in the second direction. Is formed,
The cutter device according to claim 2. A planar receiving blade region is formed on either the first blade or the second blade facing the linear protrusion,
A seal surface facing region is formed on any of the first blade and the second blade facing the belt-shaped seal surface,
The cutter device according to claim 11. When the linear protrusion and the receiving blade region abut, a gap having a thickness equal to or less than a thickness in the sealing direction of the packaging film is formed between the belt-shaped sealing surface and the sealing surface facing region. To
The cutter device according to claim 12. The gap is 0.2 mm or less,
The cutter device according to claim 13. One of the first blade and the second blade is formed with the linear protrusion and the belt-shaped sealing surface,
The linear protrusion protrudes in the approach direction with respect to the belt-shaped sealing surface,
The cutter apparatus in any one of Claims 11 thru | or 14. A supply device for supplying the packaging film;
A bag-making apparatus that forms the tubular film by bending the packaging film supplied from the supply apparatus in a width direction;
In the downstream of the bag making device, a center seal device for applying a center seal to the cylindrically formed packaging film
The cutter device according to any one of claims 2 to 15, wherein the center-sealed packaging film is cut in a width direction at a predetermined interval.
A packaging machine comprising: A packaging body having a top seal portion at the edge obtained by sealing and cutting the edge in the first direction of the packaging film that is cylindrical in the first direction in a direction perpendicular to the first direction. And
The cutting line of the top seal part is sealed by fusing by vibration,
On the cutting line or in the vicinity of the cutting line, a tearing portion that allows tearing of the package body from the fusing line toward the first direction is formed by welding by the vibration. To
Packaging body.

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