JP4213079B2 - Equipment for manufacturing packaging bags with zipper - Google Patents

Description

  The present invention relates to an apparatus for manufacturing a packaging bag with a chuck.

  As for a conventional manufacturing apparatus for a four-side sealed bag with a chuck, for example, a device according to the present applicant is disclosed in Japanese Patent Application Laid-Open No. 2003-31613 “Packaging machine including a bag making section and a bag feeding section”. The bag making portion of the packaging machine sandwiches the ribbon-shaped chuck inside the folded bottom portion when folding the wrapping film to be laid in two in the longitudinal direction with the side edge upward by the molding means, A continuous form in which the chuck is fixed to the packaging film by the chuck sealing means, the bottom portion of the packaging film is heat sealed by the bottom sealing means, and the vertical sealing means is heat sealed in the vertical direction for every fixed bag width. The bag body is intermittently sent out, and when the feeding is stopped, the vertical seal portion of the bag body is cut and separated into one bag at a time.

  In the bag-making part, the chuck position relative to the packaging film is not provided, so the chuck position is not stable. Therefore, an improvement is provided in which a guide plate in which an upper guide plate and a lower guide plate are arranged in parallel at a predetermined interval in the vertical direction is provided inside the packaging film, and a ribbon-shaped chuck is guided and guided by the guide plate. Has been done.

  However, when the chuck is fixed to the packaging film by the chuck sealing means, the guide plate is sandwiched between the seal bars and is heated, and thus warps and warps. Therefore, when the continuous chuck supplied with the pair of male and female engaging portions closed from the chuck reel is opened, and heat sealing is performed with the engaging portions of the chuck open. There has been a problem in that poor chuck attachment occurs.

In addition, the four-side sealed bag with a chuck inevitably swells because it is configured to sandwich the chuck at the bottom of the packaging film, and it is not easy to heat-seal by folding it twice in the molding process. Absent. Furthermore, when the upper end surface of the packaging film folded in two is displaced, it is difficult to manufacture a high-quality bag.
JP 2003-31613 A Japanese Patent No. 2838508

  It is an object of the present invention to provide an apparatus for manufacturing a packaging bag with a chuck that is excellent in quality in which the attachment state of the chuck to the packaging film is good and the bag mouth end face is not displaced.

  In order to achieve the above object, the invention described in claim 1 is characterized in that a packaging film wound in a roll shape is fed out by a film supply mechanism, and the film is divided into two in a longitudinal direction by a forming means with a side edge upward. When folding and folding the packaging film in half, a ribbon-like chuck fed out from the chuck reel is sandwiched between the inside of the folded bottom portion, and the chuck is held by chuck sealing means. It is fixed to the packaging film, and heat sealing is applied to the bottom of the packaging film as required by the bottom sealing means, and heat sealing is performed in the vertical direction for each fixed bag width by the vertical sealing means. The bag body is intermittently sent out by the film feeding mechanism, and the vertical seal portion of the bag body is cut and separated by the cutter means when the feeding of the film feeding mechanism is stopped. In the manufacturing apparatus for a packaging bag with a chuck provided so as to form a sheet by sheet, the rising portion of the packaging film is placed on each guide portion disposed along each oblique side of the triangular shaped plate of the forming means. And a pair of upper guide plate and lower guide plate positioned inward of the packaging film folded in two at predetermined intervals in the vertical direction. A guide plate that is placed in parallel and has an upper portion of the chuck having a substantially H-shaped cross-section, and the lower portion of the chuck is loosely fitted to the lower guide plate to guide the chuck. A plurality of guide rollers arranged in contact with each other on both side surfaces of the lower guide plate at appropriate intervals in the longitudinal direction of the guide plate, and a rear end portion on the downstream side of the guide plate. Arrange A pair of chuck clamping roller that is characterized in that provided attached to the chuck seal means.

  The manufacturing apparatus of the packaging bag with a chuck prevents the engaging portion of the chuck from being opened at the time of chuck sealing, so that the chuck can be attached to the packaging film in a good state, and the packaging film is provided by the film guide. Since the upper end surfaces of the bag are aligned, a packaging bag with a chuck excellent in quality without any deviation of the bag mouth end surface can be efficiently produced.

  The best mode of the present invention will be described below with reference to the drawings. 1 is a front view of a packaging machine provided with a bag-making unit, FIG. 2 is a front view of molding means and chuck seal means, FIG. 3 is a schematic plan view of the molding means, FIG. 4 is a perspective view of a film guide, and FIG. 2 is a sectional view taken along the line AA in FIG. 2, FIG. 6 is a sectional view taken along the line BB in FIG. 2, FIG. 7 is a plan view showing the positional relationship between the lower guide plate, the guide roller, and the chuck fastening roller. It is explanatory drawing of an attached four-way seal bag.

  The apparatus for manufacturing a packaging bag with a chuck according to the present invention is applied to a bag making portion s in a “packaging machine P having a bag making portion” shown in FIG. The outline construction of the bag making section s is composed of a film supply mechanism 10, a forming means 20, a chuck seal means 30, a bottom seal means 70, a vertical seal means 75, a film feed mechanism 80, and a cutter means 90. Become. In this embodiment, the “four-side sealed bag with chuck a” shown in FIG.

  In the film supply mechanism 10, the packaging film f mounted on the set table 11 is provided so as to be fed out to the rear dancing roller 14 and guide roller 15 side by the supply roller 13 through the guide roller 12.

  The fed packaging film f is folded in half by the triangular shaped plate 21 of the forming means 20 installed on the machine base 1 with both side edges upward in the longitudinal direction, and the apex position of the formed plate 21 Are overlapped by the alignment roller 22 erected. A film guide 23 guides the rising portion of the film f. As shown in FIG. 4, the film guide 23 has a pair of guide portions 24, 24 formed in a flat, U-shape with a stainless steel thin plate material attached to the machine base 1 side by brackets 25, 25, respectively. As shown in FIG. 3, the guide portions 24 and 24 are arranged so that the centers thereof are along the oblique sides 21 a and 21 b of the molding plate 21 as viewed from above, and guide the rising portions of the inserted film f. It is provided as follows.

  When the film f is formed into two folds by the forming means 20, the ribbon-like chuck j fed from the chuck reel 27 is sandwiched at a predetermined position close to the inside of the folded bottom portion c of the film f.

  In the chuck sealing means 30, a pair of levers 32, 32 provided with welding bars 33, 33 having a heat sealing function are provided on a main body 31 installed on the machine base 1 so as to be freely opened and closed. When the film f to be fed is intermittently stopped in the chuck sealing process, the levers 32 and 32 swing inward and press the film f from both sides by the welding bars 33 and 33 to thereby apply the chuck j to the chuck j. It is comprised so that it may fix to the inner surface of the film f.

  35 is a well-known seal portion cooling means for cooling the portion that has been heat-sealed by the chuck seal means 30. The seal portion cooling means 35 is provided with a pair of levers 37, 37 provided with cooling bars 38, 38 having a cooling function by water cooling or the like in a main body 36 installed on the machine base 1 so as to be freely opened and closed. Then, when the film f is intermittently stopped in the seal cooling process, the levers 37 and 37 are pivoted inward and the portions where the heat sealing is performed are pressurized from both sides by the cooling bar 38 to cool the portions. It is configured to apply.

  Reference numeral 40 denotes a guide plate attached to the chuck seal means 30 to guide the chuck j while maintaining a certain height with respect to the film f. As shown in FIG. 2, the guide plate 40 includes a stainless upper guide plate 41 having a thickness of about 1 mm and a length of 900 mm and a stainless lower guide plate 45 having a thickness of about 1 mm and a length of 900 mm in the vertical direction. They are arranged in parallel at a predetermined interval, and are attached to the frame 2 installed on the machine base 1 by brackets 46 fixed at three locations of the upper guide plate 41. Reference numeral 47 denotes a mounting plate comprising a pair of fixing plates 47a and a pressing plate 47b. The upper guide plate 41 and the lower guide plate 45 are sandwiched between a fixing plate 47a and a pressing plate 47b disposed at the front end portions thereof. The mounting plate 47 is provided with a guide hole 48 for allowing the chuck j to pass therethrough as shown in FIG.

  Thus, in this guide plate 40, as shown in FIG. 5, the upper portion of the chuck j having a substantially H-shaped cross-section in the packaging film f folded in two is used as the upper guide plate 41, and the lower part thereof. Each part is loosely fitted to the lower guide plate 45 so that the chuck j is smoothly guided and guided to the downstream side.

  As shown in FIGS. 6 and 7, a plurality of, here, five sets of guide rollers 51 a to 51 e are substantially in contact with the lower guide plate 45 on both side surfaces of the lower guide plate 45 with an appropriate interval in the longitudinal direction. Are arranged close to each other. The guide rollers 51 a and 51 b are attached to the front side surface of the main body 31 of the chuck seal means 30 by a bracket 52, and the guide roller 51 c is attached to the rear side surface of the main body 31 by a bracket 53. The guide roller 51 d is attached to the front side surface of the main body 36 of the seal portion cooling means 35 by a bracket 54.

  Further, on the upstream side of the seal portion cooling means 35, a roller member 56 is provided in which a roller 57 for guiding the bottom edge of the film f folded in two is freely rotatable. Similarly, on the downstream side, a roller member 58 provided with a roller 59 that is freely rotatable is disposed. A guide roller 51e is attached to the bracket 60 fixed to the roller member 58.

  Thus, the guide rollers 51a to 51e prevent the guide plate 40 from being warped or distorted by the accumulated heat during chuck sealing, and the chuck j supplied with the pair of male and female engaging portions closed. Is provided as much as possible to prevent it from opening.

  Reference numerals 61 and 61 denote a pair of chuck fastening rollers which are disposed in the vicinity of the rear end portion on the downstream side of the guide plate 40 and attached to the bracket 60. The chuck tightening rollers 61, 61 are provided to press the chuck j that has passed through the guide plate 40 from both the left and right sides and to prevent the chuck j from opening.

  The bottom seal means 70 heat seals the bottom portion c of the film f when the film f is intermittently stopped. The sealing bar 71 of the bottom sealing means 70 is provided so that the height of the sealing position can be adjusted according to the length of the bag.

  The vertical seal means 75 is provided with two sets of vertical seal bodies in parallel, and the portions that become the side edges d and d for each bag width according to the bag size to be manufactured are completely sealed by two heat treatments. It is provided to apply. The sealing bar 76 of the vertical sealing means 75 is provided so that the sealing position can be adjusted according to the width of the bag to be manufactured.

  The film feed mechanism 80 detects marks attached to the film f at regular intervals according to the bag width by a mark sensor (not shown), and drives and rotates a pair of feed rollers 81 by a servo motor device (not shown). And it is provided so that the uncut continuous bag body shown in FIG.

  The cutter means 90 cuts the center part of the longitudinal seal of the uncut continuous bag body with a hook-shaped cutter and separates them one by one. Basically, while the leading portion of the film f fed by the film feeding mechanism 80 is nipped and stopped by a clamp (not shown) provided at a position for discharging the rear bag, the cutter Is operated so as to cut and separate the continuous bag body for every predetermined bag width to form a four-side sealed bag a with a chuck one by one.

Next, the operation of the bag making portion s of the packaging machine P to which the manufacturing apparatus for a packaging bag with a chuck according to the present invention is applied will be described.
(1) The packaging film f wound in a roll is fed by the film supply mechanism 10 and folded in half by the molding plate 21 of the molding means 20 with the side edges upward in the longitudinal direction. Are superimposed. When the film f is folded in half, the upper end surface of the film f is neatly aligned by the portion rising from the forming plate 21 passing through the guide portions 24, 24 of the film guide 23.
(2) Further, the chuck j fed from the chuck reel 27 is sandwiched close to the inside of the folded bottom portion c of the film f.
(3) The film f folded in two has the upper part of the chuck j fitted on the upper guide plate 41 of the guide plate 40, and the lower part of the film f is loosely fitted on the lower guide plate 45, together with the chuck j on the downstream side. Guided to. Since the guide plate 40 is prevented from warping and distortion by the guide rollers 51a to 51e, the engaging portion of the chuck j is not opened.
(4) When the film f to be fed is intermittently stopped in the chuck sealing process, the film f is pressurized by the welding bars 33, 33 of the chuck sealing means 30, so that the chuck j is fixed to the inner surface of the film f.
(5) The chuck j that has passed through the guide plate 40 is reliably closed even when the engaging portion is in an unstable closed state by being pressed by the chuck fastening rollers 61 and 61.
(6) Next, the bottom portion c of the film f is heat-sealed by the bottom sealing means 70, and the vertical sealing means 75 is heat-sealed in the vertical direction for every fixed bag width, thereby forming a continuous bag body. It is said.
(7) The bag body is intermittently sent out by the film feeding mechanism 80, and when the feeding is stopped, the central portion of the vertical seal is cut and separated by the cutter means 90, so that the bag mouth e shown in FIG. Good quality one-by-one four-side sealed bags a with a chuck are obtained.
(8) The four-side sealed bag a with chuck manufactured by the bag making section s is delivered to the packaging machine main body t disposed downstream in the transfer direction of the film f by a bag delivery device (not shown). The package is filled and heat-sealed at the bag mouth e to produce a product.

  As described above, this apparatus for manufacturing a packaging bag with a chuck efficiently produces a packaging bag with a chuck that has a good state of attachment of the chuck to the packaging film and has excellent quality with no deviation of the bag mouth end face. be able to.

Front view of a packaging machine with a bag making section Front view of molding means and chuck seal means Outline plan view of forming means Perspective view of film guide AA line sectional view of FIG. BB sectional view of FIG. The top view which shows the arrangement | positioning relationship between a lower guide plate, a guide roller, and a chuck fastening roller Illustration of a four-side sealed bag with a chuck

Explanation of symbols

P: Packaging machine with bag making section s ... Bag making section (manufacturing device for packaging bag with chuck)
f ... Film for packaging a ... Four-side sealed bag with zipper (packaging bag with zipper)
j ... chuck 10 ... film supply mechanism 20 ... molding means 21 ... molding plate 23 ... film guides 24, 24 ... guide portion 27 ... chuck reel 30 ... chuck seal Means 35 ... Sealing part cooling means 40 ... Guide plate 41 ... Upper guide plate 45 ... Lower guide plates 51a to 51e ... Guide roller 61 ... Chuck tightening roller 70 ... Bottom Sealing means 75 ... Vertical sealing means 80 ... Film feeding mechanism 90 ... Cutter means

Claims (1)

When the packaging film wound in a roll is fed out by the film supply mechanism and folded by the molding means in two in the longitudinal direction with the side edges upward, and when the packaging film is folded in half The ribbon-shaped chuck fed from the chuck reel is sandwiched in the vicinity of the inside of the folded bottom portion, the chuck is fixed to the packaging film by the chuck sealing means, and the bottom of the packaging film is fixed by the bottom sealing means. The part is heat-sealed as required, and a continuous bag body that is heat-sealed in the vertical direction for every fixed bag width by the vertical sealing means is intermittently sent out by the film feed mechanism, and the film feed mechanism A packaging bag with a chuck provided so that the vertical seal portion of the bag body is cut and separated by a cutter means into a single bag when feeding of the bag is stopped In the manufacturing apparatus,
A film guide that guides the film by inserting the rising portions of the packaging film into the guide portions respectively arranged along the oblique sides of the triangular shaped plate of the forming means, and two An upper portion of the chuck having a substantially H-shaped cross-section in which a pair of upper guide plate and lower guide plate positioned inward of the folded packaging film are arranged in parallel at a predetermined interval in the vertical direction. And a guide plate that guides and guides the chuck by loosely fitting a lower portion thereof to the lower guide plate, and a guide plate that is in close contact with both side surfaces of the lower guide plate. A plurality of guide rollers respectively disposed at appropriate intervals in the longitudinal direction and a pair of chuck fastening rollers disposed in proximity to the rear end portion on the downstream side of the guide plate are attached to the chuck seal means. Chuck with packaging bag manufacturing apparatus characterized by a.

Images