JP2005306444A - Packing chute support structure for rotary system automatic packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary system automatic packaging machine capable of reducing, by a simple method, film wrinkles that occur at a side seal portion. <P>SOLUTION: The rotary system automatic packaging machine under this invention is provided with a turn table 4, a plurality of side sealing devices 5 that are disposed along the turn table 4 and form side seals by sandwiching in the width direction and thermo-compression-bonding packaging films folded over at their central portions, and with packing chutes 7 inserted and sandwiched for feeding contents into the bag portions 12 of the packaging film, partitioned by the side sealing devices 5, with arms 21 that support the packing chutes 7 being constituted by straight plate springs. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rotary automatic packaging machine for producing a package in which a bag portion of a packaging film is filled with the contents of a powder.

  2. Description of the Related Art Conventionally, there is a rotary automatic packaging machine as one of automatic packaging machines that uses a long packaging film to divide and package contents such as a fixed amount of powder into a large number of packages. In this rotary automatic packaging machine, a long packaging film unwound from a film coil is folded while being moved in the horizontal direction, and this film is introduced into a turntable.

A large number of side seal bars arranged around the turntable are held on the introduced film while forming a width seal (side seal) at a constant interval. Then, between the sequentially folded films, a large number of filling chutes swirling between the adjacent seal bars are inserted, a predetermined amount of contents are inserted, and after the filling, the filling chutes are removed and the side seal bars are removed. . And the upper edge of the bag part of the packaging film after filling the contents is heat-sealed (top-sealed) and sealed, and cut or perforated near the center of the side seal part to obtain the required packaging form Yes.
Such conventional rotary type automatic packaging machines are disclosed in, for example, Patent Document 1, Patent Document 2, and the like.
JP 2001-199402 A JP 2001-122208 A

  In such a rotary type automatic packaging machine, there is a mechanism for controlling the filling chute to move up and down or swivel, and the mechanism for controlling the filling chute to move up and down or swivel is connected by a support column and an arm. .

  And, since the packaging film in which the filling chute is inserted and inflated is sandwiched by the side seal bar, wrinkles are likely to occur in this side seal portion, and in particular, the packaging with the filling chute folded. If the film cannot be properly positioned near the center of the film, the wrapping of the wrapping film bag portion is biased and wrinkles are generated at the side seal portion.

  For this reason, a delicate adjustment is required when determining the mechanism for controlling the filling chute to move up and down or turning, and the length and mounting angle of the arm connecting the mechanism and the filling chute.

  However, the mechanism for controlling the filling chute to move up and down or pivot is always driven during the operation of the rotary automatic packaging machine, and the position fluctuation of the filling chute occurs due to secular change and the above factors. Therefore, it has been difficult to completely prevent wrinkles from occurring in the side seal portion.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a rotary automatic packaging machine capable of reducing wrinkles of a packaging film generated at a side seal portion by a simple method. And

  In order to achieve the above object, the rotary automatic packaging machine according to claim 1 of the present invention performs thermocompression bonding while sandwiching the packaging film in which the central portion is bent while being transported in the horizontal direction in the width direction. A side seal device for forming a side seal, a filling chute inserted to put contents into a bag portion of a packaging film divided by the side seal device, the plurality of side seal devices and a plurality of filling chutes A rotary automatic packaging machine having a turntable disposed therein, wherein the member supporting the filling chute is constituted by a leaf spring, and the leaf spring supports the filling chute so as to be displaceable in a horizontal direction. .

Moreover, the leaf | plate spring which concerns on Claim 2 of this invention has a linear shape.
Moreover, the leaf | plate spring which concerns on Claim 3 of this invention has slack of a substantially semicircle shape on the way.

  According to the filling chute support mechanism of the rotary type automatic packaging machine according to claims 1 to 4 of the present invention, wrinkles of the packaging film generated at the side seal portion can be reduced.

  As described above, according to the rotary automatic packaging machine according to the present invention, there is an excellent effect that wrinkles of the packaging film generated at the side seal portion can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the overall configuration of the rotary automatic packaging machine according to the present invention will be described with reference to FIG.

  FIG. 1 is a front view (partially sectional view) showing a rotary automatic packaging machine according to the present invention. As shown in FIG. 1, the rotary automatic packaging machine 1 includes, as main components, a rewind reel 2, a film guide 3, a turntable 4, a side seal device 5, a content supply device 6, a filling chute 7, and a top seal. A device 8 and a cutter device 9 are provided.

  The packaging film 11 is made of a transparent or translucent material, for example, a base film such as PET and a heat seal film such as polyethylene having a melting point lower than that of the base film. The packaging film 11 may have a three-layer structure of a base film, an intermediate film, and a heat seal film.

  Subsequently, the packaging film 11 rewound by the coil rewinding reel 2 continuously flows in the right direction in the figure, and is folded into two in a U shape at the center by the film guide 3. The folded packaging film 11 is introduced into the turntable 4 from the tangential direction of the turntable 4 as shown in FIG.

  A large number of side seal devices 5 for forming side seals are arranged on the turntable 4. The side seal device 5 performs a predetermined positioning with respect to the packaging film 11 and simultaneously performs heat sealing in the width direction of the packaging film 11 to locally perform thermocompression bonding.

  At this time, the portion of the packaging film sandwiched between the side seal devices 5 is melted by the heat supplied from the side seal devices 5. At the same time, since the side seal device 5 sandwiches the packaging film 11, the melted portion of the folded packaging film is pressurized. As a result, the heat-sealing films of the folded packaging film 11 are pressure-bonded to form a side seal. In this way, a plurality of bag portions 12 sandwiched between side seals are formed on the folded packaging film 11.

  In addition, a filling chute is inserted between the wrapping films folded in parallel with the heat sealing operation by the side seal device, and the contents weighed from the content supply device 6 are inserted through the filling chute. The Thereafter, the packaging film 11 is heat-sealed with respect to the filling port of the bag part 12 by the top seal device 8.

  Finally, the individual packaging bag 14 is completed by cutting the vicinity of the center of the side seal formed by the cutter device 9.

  FIG. 2 is a schematic top view illustrating operations related to the turntable 4, the side seal device 5, the filling chute 7 and the like in the rotary automatic packaging machine 1 according to the present invention, and FIG. 3 is a rotary diagram according to the present invention. It is the other upper surface schematic diagram explaining the operation | movement relevant to the turntable 4, the side seal apparatus 5, the filling chute 7, etc. in the type automatic packaging machine 1. FIG. As shown in FIG. 2, the packaging film 11 is fed rightward from the lower left side of FIG. 2, and is folded into two in a U-shape at the center by the film guide 3, and swivels into the folded packaging film. The filling chute 7 that has been lowered is inserted. Then, the half-fold film swelled by the filling chute is sandwiched by the side seal device 5 arranged on the turntable 4 to form a side seal.

  The process of forming the side seal is a process in which the contents are introduced through the filling chute that is simultaneously lowered and inserted, and the contents are charged in the first half of the region indicated by 30.

  Thereafter, the sandwiching of the packaging film by the side seal device 5 is released, and at the same time, the filling chute 7 is raised and inserted into and removed from the packaging film to complete a packaging film having a large number of bag parts 12, and this packaging film is the next step. Sent to the top seal mechanism. The filling chute is rising in the region indicated by 31 in this way, and in the latter half of the region where the filling chute 7 is rising, the filling chute 7 turns counterclockwise in the figure and is newly It is easy to be lowered and inserted into the folded packaging film.

  As described above, the column 20 extending upward and downward while rotating the filling chute 7 is the column 20 extending upward from the charging chute control mechanism, and the upper end of the column 20 is filled with the arm 21 extending horizontally. A chute 7 is attached.

  In FIG. 2, this arm 21 is constituted by a straight leaf spring, which keeps the filling chute 7 in a fixed position in the vertical direction and displaceable in the horizontal direction. It is automatically fine-tuned so that the optimum pinching position is obtained. As a result, it has become possible to reduce wrinkles of the packaging film generated at the side seal portion.

  Next, other operations related to the turntable 4, the side seal device 5, the filling chute 7 and the like will be described with reference to FIG. In FIG. 3, an arm 22 having a substantially semicircular slack is used instead of the arm 21 constituted by the linear leaf spring of FIG. 2.

  As shown in FIG. 3, the wrapping film 11 is fed rightward from the lower left side of FIG. 3, and is folded into two in a U shape at the center by the film guide 3, and swivels into the folded wrapping film. The filling chute 7 that has been lowered is inserted. Then, the half-fold film swelled by the filling chute is sandwiched between the side seal devices 5 arranged on the turntable 4 to form a side seal.

  The process of forming the side seal is a process in which the contents are introduced through the filling chute that is simultaneously lowered and inserted, and the contents are charged in the first half of the region indicated by 30.

  Thereafter, the sandwiching of the packaging film by the side seal device 5 is released, and at the same time, the filling chute 7 is raised and inserted into and removed from the packaging film to complete a packaging film having a large number of bag parts 12, and this packaging film is the next step. Sent to the top seal mechanism. The filling chute is rising in the region indicated by 31 in this way, and in the latter half of the region where the filling chute 7 is rising, the filling chute 7 turns counterclockwise in the figure and is newly It is easy to be lowered and inserted into the folded packaging film.

  As described above, the support chute 20 extending upward and downward from the filling chute control mechanism is raised and lowered while turning the filling chute 7, and the upper end of the prop 20 is filled with the arm 22 extending horizontally. A chute 7 is attached.

  In FIG. 3, the arm 22 is constituted by a leaf spring having a substantially semicircular slack on the way, and this leaf spring maintains the filling chute 7 in a fixed position in the vertical direction and is displaced in the horizontal direction. It is possible to make fine adjustments automatically so as to obtain an optimum sandwiching position by the packaging film.

  In addition, the substantially semicircular slack in the middle of the arm 22 plays a role of expanding the position adjustment range, and as a result, it becomes possible to further reduce wrinkles of the packaging film generated at the side seal portion.

  FIG. 4 is an operation explanatory diagram regarding the fine adjustment operation of the filling chute position by the leaf spring arm 21 according to the present invention. As shown in FIG. 4, this is a cut-out portion including one filling chute installed on the turntable 4 and two side seal bars 5 sandwiching the packaging film. The filling chute 7 inserted into 12 is supported by a linear leaf spring 21 attached to the upper end of the column 20. And this linear leaf | plate spring 21 can carry out the circular displacement motion centering | focusing on the support | pillar 20 in order to finely adjust so that the position of a filling chute may be in the optimal clamping state for the bag part 12 of a packaging film. . By this circular displacement movement, wrinkles of the packaging film generated at the side seal portion can be reduced.

  FIG. 5 is an operation explanatory diagram regarding the fine adjustment operation of the filling chute position by the leaf spring arm 22 according to the present invention. In FIG. 5, a plate spring arm 22 having a substantially semicircular slack is used in place of the arm 21 constituted by the linear plate spring of FIG. 4.

  As shown in FIG. 5, this is a cut-out portion including one filling chute installed on the turntable 4 and two side seal bars 5 sandwiching the packaging film. The filling chute 7 inserted into 12 is supported by a leaf spring 22 having a substantially semicircular slack attached to the upper end of the support column 20. The leaf spring 22 having a substantially semicircular slack on the way is a circular displacement centered on the column 20 for fine adjustment so that the position of the filling chute is optimally sandwiched for the bag portion 12 of the packaging film. Stretching and stretching movements can be performed in motion and in a substantially semicircular slack. This circular displacement movement and expansion / contraction movement can further reduce the wrinkles of the packaging film generated at the side seal portion.

  As described above, in the rotary automatic packaging machine 1 according to the present invention, the occurrence of wrinkles in the side seal portion due to the position fluctuation of the filling chute 7 can be reduced, and a good side seal can be reliably formed. it can.

  In the present invention, as a mechanism for finely adjusting the position of the filling chute, a straight leaf spring or a leaf spring having a substantially semicircular slack is explained. However, the present invention is not limited to this. It includes other mechanisms that can be displaced in the direction.

It is a front view (partial sectional view) showing a rotary type automatic packaging machine according to the present invention. It is the upper surface schematic diagram explaining the operation | movement relevant to the turntable 4, the side seal apparatus 5, the filling chute 7, etc. in the rotary type automatic packaging machine 1 which concerns on this invention. It is the other upper surface schematic diagram explaining the operation | movement relevant to the turntable 4, the side seal apparatus 5, the filling chute 7, etc. in the rotary type automatic packaging machine 1 which concerns on this invention. It is operation | movement explanatory drawing regarding the position fine adjustment operation | movement of the filling chute by the leaf | plate spring arm 21 which concerns on this invention. It is operation | movement explanatory drawing regarding the position fine adjustment operation | movement of the filling chute by the leaf | plate spring arm 22 which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotary type automatic packaging machine 2 Rewinding reel 3 Film guide 4 Turntable 5 Side seal device 6 Contents supply device 7 Filling chute 8 Top seal device 9 Cutter device 11 Packaging film 12 Bag part 14 Individual packaging bag 20 Strut 21, 22 arm

Claims (3)

A side seal device that forms a side seal by applying thermocompression while being sandwiched in the width direction with respect to the packaging film bent in the center while being transferred in the horizontal direction;
A filling chute inserted to put the contents into the bag portion of the packaging film divided by the side seal device;
A rotary automatic packaging machine comprising the plurality of side seal devices and a turntable on which a plurality of filling chutes are arranged,
The member supporting the filling chute is composed of a leaf spring,
The rotary spring automatic packaging machine is characterized in that the leaf spring supports the filling chute so as to be displaceable in the horizontal direction.   The rotary automatic packaging machine according to claim 1, wherein the leaf spring has a linear shape.   The rotary automatic packaging machine according to claim 1, wherein the leaf spring has a substantially semicircular slack on the way.

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