JP2008155969A - Improvement in filling chute mounting structure of automatic packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means that enables the dismounting or mounting of the whole of a filling chute at a simple operation (one-touch operation) without any change in an adjusted mounting position. <P>SOLUTION: The mounting section of a filling chute 21 is constituted of a mechanism for the position adjustment of the whole of the filling chute in the directions of the right and left as the packaging machine is viewed from its front, a mechanism for the position adjustment of the under side of the filling chute body in the directions of the front and rear as the packaging machine is viewed from its front, and of a plate-like member 40 that fixes the whole of the filling chute including the preceding two position adjustment mechanisms onto the automatic packaging machine. The mounting or dismounting of the mounting screws 42, 43 of the plate-like member 40 through the use of their threads enables the whole of the position-adjusted filling chute to be removed for rinsing, and the screwing back of the mounting screws for fastening after rinsing allows the re-fixing at the proper position of the whole of the position-adjusted filling chute. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a filling chute having a bag making guide function for folding a packaging film into two in the form of a bag in order to continuously form a packaging bag in an automatic packaging machine, and in particular for attaching the filling chute to an automatic packaging machine. It relates to structural improvement.

  A conventional L-shaped seal fitting type automatic packaging machine is described in Patent Document 1. The bag making guide function of the filling chute in such an automatic packaging machine is responsible for the process of folding the packaging film in half in, for example, an L-type seal fitting type automatic packaging machine. That is, this step is a step of folding the long packaging film drawn from the raw roll into a folded state while being attached to the filling chute, and the folded packaging film is then vertically sealed by an L-shaped seal fitting. It is sent to the process and the horizontal sealing process.

  FIG. 5 is a front view of a filling chute in a conventional L-shaped seal fitting type automatic packaging machine. FIG. 6 is a side view of a filling chute in a conventional L-shaped sealing metal fitting type automatic packaging machine. As shown in FIG.5 and FIG.6, the structure regarding the bag making guide function in the conventional filling chute is as follows. The packaging film FX is sent downward along the bag making guide portion 123 of the filling chute 121, and becomes a packaging film FY folded in the vicinity of the input cylinder 126 while being guided by the shape of the bag making guide portion 123.

  The filling chute 121 has a funnel-shaped charging part 125 for filling the bag-shaped packaging film with the contents, and is connected to the charging cylinder 126. Then, the contents are put in the charging unit 125 and collected in the charging cylinder 126, and then filled in a folded package bag.

  In order to fix the filling chute 121 as a whole to the automatic packaging machine, the right side attachment portion 127 and the left side attachment portion 128 are welded to the feeding portion 125, and the right side attachment portion 127 and the left side attachment portion 128 are automatically packaged. Screwed to an L-shaped bracket provided on the machine.

Such a mounting position of the filling chute 121 has a great influence on the finished state of the packaging bag, and holds the key whether or not the occurrence of ear misalignment and wrinkles can be suppressed particularly in the finished packaging bag. That is, if the mounting position of the filling chute is shifted to the left or right of the front view with respect to the position where the packaging film flows, an ear misalignment occurs. If the packaging film is loosened, wrinkles will occur.
Japanese Utility Model Publication No. 50-31158

  As described above, the mounting position of the filling chute 121 needs to be strictly adjusted before the bag making operation in the packaging machine, and the manufacturing position for confirming the mounting position adjustment in the conventional filling chute shown in FIGS. In the bag operation, if ear misalignment or wrinkle occurs, loosen the screw fixing parts in the right attachment part 127 and the left attachment part 128 and the L-shaped bracket on the automatic packaging machine side, and shift the filling chute left and right as viewed from the front and back and forth. After that, tighten the screws again and carry out the bag-making operation to check the attachment position adjustment. Then, the above attachment position adjustment work and the bag making operation for confirmation are repeated until an optimum attachment position where no ear misalignment or wrinkle is found is found.

  Such a mounting position adjustment operation is an operation accompanied by an act of loosening or tightening a set screw using a tool because the mounting structure of the filling chute is screwed, and the position of the filling chute main body is gradually adjusted. There is also a need for a manual operation for shifting to the other. For this reason, the mounting position adjustment work takes time and labor, and there is a problem that it is difficult to perform fine adjustment.

  Furthermore, since the packaging machine is moved after the attachment position adjustment work to make a test bag and the adjustment result is confirmed, there is a problem that a wasteful packaging film is consumed in proportion to the position adjustment time.

  In addition, in such a mounting position adjusting operation, in the finished packaging bag, when it is desired to suppress the generation of wrinkles as much as possible, the filling chute is projected as far as possible to attach the packaging bag at a position where the slack of the packaging film is reduced. In addition, when you want to fill as much content (raw material) as possible in the packaging bag, it is necessary to inflate the packaging bag. In this case, the packing chute is loosened slightly after the filling chute. Attach so that a little occurs. And, in the conventional packaging machine, the adjustment operation (setting operation) of the mounting position of the filling chute is always performed before the operation of making the packaging bag (bag making operation), and this adjustment operation (setting operation) is easy. As can be implemented, the left and right mounting members of the filling chute are provided with position adjusting means for the left and right directions and the vertical direction when viewed from the front of the packaging machine.

  On the other hand, the inside of this filling chute slides down while the contents are in direct contact, and if a continuous operation is performed for a certain period of time, a phenomenon occurs that the contents adhere to the inside of this filling chute and the powder falls off. To do. And if this powder fall off, all the contents weighed correctly will not fall into the packaging bag, but some will adhere to the inside of the filling chute and the filling value will fluctuate. The filling chute is clogged and does not fall.

  For this reason, the filling chute including the position adjusting means needs to be removed and cleaned from the packaging machine body after a certain period of operation, and as a result, the position can be easily adjusted, but the position is adjusted each time the removal operation is performed. There was a problem that it would take time to implement.

  Further, the content to be filled is a powder containing a part of a granular substance or a particulate substance, and a powdering phenomenon occurs with the filling operation. And if this powder rising phenomenon continues for a fixed time, the powder which rose to the outside of the filling chute will be accumulated, and a part of the accumulated powder will fall to the L-shaped seal fitting directly below. Further, the L-shaped seal fitting is heated by an electric heater, and the fallen powdered content is burned and fixed on the surface of the L-type seal fitting, so that the finish deterioration of the heat seal portion or the scattered powder This will cause contamination of the packaging bag surface.

  This powder rise phenomenon is a problem that always occurs although the amount of powder is large and small as long as the method of allowing powder contents to fall naturally into the packaging bag is adopted. Even if the powder rise phenomenon occurs, the L-shaped seal There was a need for a device that would reduce the amount of metal falling on the bracket.

  The present invention has been made for such a problem, and it is possible to remove or attach the entire filling chute with a simple operation (one-touch operation) without fluctuation of the adjusted mounting position, and the dust rising phenomenon. It is an object of the present invention to provide a means capable of suppressing the powder content scattered outside the filling chute from falling on the L-shaped seal fitting.

  In order to achieve the above object, an automatic packaging machine according to claim 1 of the present invention bends a central portion of a packaging film while transporting the packaging film in a substantially vertical downward direction, and in a packaging bag formed by a sealing device. A filling chute for charging the contents into the bag and forming a bag shape by applying a vertical seal and a horizontal seal to the folded packaging film using a seal fitting, and after the contents are charged into the bag An automatic packaging machine comprising a sealing device for sealing the charging port, and a feeding roll for appropriately transporting a large number of packaging bags made by the filling chute and the sealing device, wherein the filling chute is in the center of the packaging film A bag making guide part for bending the part, an input part for supplying the contents, an input cylinder for guiding the input contents into the packaging bag, and a filling chute are fixed to the automatic packaging machine. The attachment part is configured by a mechanism for adjusting the position of the entire filling chute in the left-right direction when viewed from the front of the packaging machine, and a mechanism for adjusting the position of the lower side of the filling chute main body before and after the front of the packaging machine. The plate-shaped member that fixes the entire filling chute including these two position adjusting mechanisms to the automatic packaging machine is configured.

  In addition, the mechanism for adjusting the position of the entire filling chute according to claim 2 of the present invention in the left-right direction prevents the occurrence of ear misalignment of the finished packaging bag, and adjusts the lower side of the filling chute main body to the front and rear. This mechanism suppresses the occurrence of wrinkles in the finished packaging bag, and the plate-like member for fixing the entire filling chute to the automatic packaging machine is screwed on and off the mounting screw, so that the entire filling chute is adjusted. It can be removed and cleaned, and the entire filling chute with its position adjusted can be fixed again in the correct position by screwing and tightening the mounting screw after cleaning.

  According to the plate-like member of the filling chute according to the first and second aspects of the present invention, the entire filling chute can be removed and cleaned by a simple operation (one-touch operation) without changing the mounting adjustment position of the filling chute. After that, it can be attached at the same position, and the labor required for the cleaning operation that is regularly performed can be reduced.

  Further, the plate-like member according to claim 3 of the present invention is provided with a cut portion perforated for fitting the filling chute and a wall member welded around the cut portion.

  Further, the wall member according to claim 4 of the present invention is dammed so that the scattered contents deposited on the plate-like member due to the dusting phenomenon do not fall toward the L-shaped seal fitting.

  According to the plate-like member of the filling chute according to claim 3 and claim 4 of the present invention, it becomes possible to suppress the powder contents scattered outside the filling chute due to the dust rising phenomenon from falling on the L-shaped seal fitting. It is possible to reduce the deterioration of the finish of the heat seal part due to the combustion of contents scattered on the surface of the mold seal fitting or the contamination of the packaging bag surface due to the scattered powder.

  As described above, according to the present invention, in the filling chute of the L-type seal fitting type automatic packaging machine, the entire filling chute can be removed by a simple operation (one-touch operation) without changing the adjusted mounting position. Since the mounting structure is adopted, an excellent effect is achieved in that it is possible to reduce labor in the cleaning work that is performed regularly.

  In addition, a structure that can prevent the powder contents scattered outside of the filling chute from falling onto the L-shaped seal fitting due to the dust rising phenomenon reduces the finish of the heat seal part or the contamination of the packaging bag surface due to the scattered powder. There is an excellent effect of being able to.

  An embodiment of an automatic packaging machine according to the present invention will be described with reference to the drawings. First, the overall configuration of the L-shaped sealing metal fitting type automatic packaging machine of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view showing an L-shaped seal bracket type automatic packaging machine according to the present invention, and FIG. 2 is a side view showing an L-shaped seal bracket type automatic packaging machine according to the present invention. In FIGS. 1 and 2, a partially exploded view is applied in the drawing.

  1 and 2, reference numeral 1 denotes an entire L-shaped seal fitting type automatic packaging machine (hereinafter abbreviated as an automatic packaging machine) according to the present invention. Reference numeral 10 is a packaging material roll, 11 is a packaging material supply motor, 12 is a hopper, 13 is a weighing turntable, 14 is a stepping motor, 15 is a main motor, 16 is a speed reducer, 17 is a belt conveyor, and 18 is a cutter device. , 19 is a feed roll, 20 is an L-shaped seal fitting, 21 is a filling chute, and 22 is a switchboard.

  Moreover, the packaging material roll 10 is obtained by winding a wrapping film in a coil shape around the same axis. The packaging film is made of a transparent or translucent material, for example, a base film such as PET or a heat seal film such as polyethylene having a melting point lower than that of the base film.

  As shown in FIGS. 1 and 2, the automatic packaging machine 1 drives the packaging material supply motor 11 and the like while pulling back and pulling out the long packaging film rewound from the packaging material roll 10. The wrapping film continuously flows in the vertical downward direction in the figure, and is folded into two in a U shape at the center by the filling chute 21. The folded packaging film is sandwiched by the L-shaped seal fitting 20 installed immediately below the filling chute 21 so as to simultaneously perform vertical heat sealing and horizontal heat sealing, thereby forming a bag shape.

  The hopper 12 contains contents (raw materials), and the contents are cut and weighed to a certain amount by the weighing turntable 13, and then the weighed contents are charged at the inlet of the filling chute 21 at a certain timing. It is filled in the bag of the packaging film that is dropped into the part and inserted through the charging cylinder that is the outlet of the filling chute.

  The packaging film including the bag portion filled with the contents is conveyed downward by one bag by the feed roll 19 and then sandwiched again by the L-shaped seal fitting 20 to perform vertical heat sealing and horizontal heat sealing. The upper part of the bag portion filled with is sealed. At the same time, the next packaging bag is formed by sandwiching the L-shaped seal fitting 20, and a continuous packaging bag is completed by repeating the contents filling operation and the sealing operation of the upper portion of the bag.

  The continuous packaging bags are sent to the cutter device 18 directly below, and the central seal of the horizontal seal portion is cut or perforated, and the packaging bags in individual packaging form fall on the belt conveyor 17, Transported and boxed.

  FIG. 3 is a front view of a filling chute in an L-shaped sealing metal fitting type automatic packaging machine according to the present invention. FIG. 4 is a top view of the filling chute in the L-type sealing metal fitting type automatic packaging machine according to the present invention. As shown in FIGS. 3 and 4, the bag making guide function of the filling chute 21 according to the present invention is as follows.

  The packaging film FX is sent downward along the bag making guide portion 23 of the filling chute 21 and becomes a packaging film FY folded in the vicinity of the input cylinder 26 while being guided by the shape of the bag making guide portion 23.

  The filling chute 21 has a funnel-shaped charging portion 25 for filling the bag-shaped packaging film with the contents, and is connected to the charging cylinder 26. In other words, the contents are put in the charging unit 25 and collected in the charging cylinder 26, and then filled in a folded folding bag. In addition, the charging portion 25 has a structure incorporated in the filling chute 21 or a structure that can be removed in the form of an intermediate chute, etc. In FIG.

  In order to fix the filling chute 21 as a whole to the automatic packaging machine, a reinforcing member 24 bent in a substantially U shape when viewed from above is welded to the bag making guide portion 23. A right attachment shaft 30 and a left attachment shaft 31 are welded to the reinforcing member 24, and a right attachment shaft support portion 32 that supports the axial attachment direction and the rotation direction freely penetrates the right attachment shaft 30 so as to be attached to the left attachment portion. The shaft 31 is penetrated by a left attachment shaft support portion 33 that supports the shaft 31 in the axial direction and the rotation direction. The right attachment shaft support portion 32 is welded to the right base plate 37, and the right base plate 37 is fixed to the plate-like member 40 with a set screw 44. Similarly, the left mounting shaft support portion 33 is welded to the left base plate 38, and the left base plate 38 is fixed to the plate-like member 40 with a set screw 45. The plate-like member 40 is fixed to the automatic packaging machine with a set screw 42 and a set screw 43.

  The filling chute attachment position adjusting method will be described. First, in order to roughly align the filling chute 21 along the flow direction of the packaging film FX conveyed downward, the set screws 44 and the set screws 45 are loosened, and the right base plate 37 and the left base plate 38 are moved. The fixing position is adjusted back and forth, and the entire filling chute 21 is aligned. After the adjustment, the set screw 44 and the set screw 45 are screwed and tightened so that the filling chute 21 and the plate-like member 40 are integrated.

Next, a mechanism for adjusting the position of the entire filling chute 21 in the left-right direction when viewed from the front of the packaging machine is installed on the right side of the right attachment shaft support portion 32. This configuration is as follows.
(1) The front end portion of the right mounting shaft 30 extending through the right mounting shaft support portion 32 is threaded, and the left and right position adjustment knob 34 is screwed into this screw portion. Has been.
(2) The left / right position adjustment knob 34 is sandwiched between members fixed to the right base plate 37 so that the knob itself does not move in the left / right direction.
The operation of the mechanism for adjusting the position of the entire filling chute 21 in the left-right direction when viewed from the front of the packaging machine is as follows.

(1) When the packaging machine operator rotates the left / right position adjustment knob 34 rightward when viewed from the side of the packaging machine, the left / right position adjustment knob 34 is restricted so as not to move in the left / right direction. The right attachment shaft 30 is moved in the left direction.
(2) When the left / right position adjustment knob 34 is rotated counterclockwise when viewed from the side of the packaging machine, the right / left position adjustment knob 34 is restricted so as not to move in the left / right direction. 30 will be moved to the right.
(3) With the configuration and operation as described above, the filling chute 21 main body can be adjusted in the left direction or the right direction when viewed from the front by rotating the left / right position adjustment knob to the right or left when viewed from the side. In addition, it is possible to prevent the occurrence of ear misalignment of the finished packaging bag.

Next, a mechanism for adjusting the position of the filling chute 21 as a whole before and after the front view of the packaging machine is installed on the left side of the left attachment shaft support portion 33. This configuration is as follows.
(1) A rotation position adjusting plate 39 is welded to the left side mounting shaft 31 adjacent to the left side of the left side mounting shaft support portion 33.
(2) On the front surface of the rotational position adjusting plate 39, a screw portion of the rotational position adjusting knob 35 is screwed into a member rising from the left base plate 38. The tip is in contact with the rotational position adjustment plate 38. Further, on the rear surface of the rotational position adjusting plate 39, a screw portion of the rotational position adjusting knob 36 is screwed into a member rising from the left base plate 38. Is in contact with the rotational position adjustment plate 38.

The operation of the mechanism for adjusting the position of the entire filling chute 21 before and after the packaging machine front view is as follows.
(1) When the packaging machine operator rotates the rotational position adjustment knob 36 counterclockwise as viewed from the rear of the packaging machine, the tip of the screw portion of the rotational position adjustment knob 36 rotates and advances in the backward direction, and leaves the rotational position adjustment plate 39. Then, when the packaging machine operator rotates the rotational position adjustment knob 35 to the right when viewed from the front of the packaging machine, the tip of the screw portion of the rotational position adjustment knob 35 rotates and advances backward, and the rotational position adjustment plate 39 is moved. It comes to push backwards.
(2) The rotational position adjustment plate 39 pushed in the rearward direction moves in an arc shape around the left mounting shaft 31, and the lower part of the filling chute 21 (such as the feeding cylinder 26) comes out in the front direction of the packaging machine. It becomes like this.
(3) For this reason, the slack of the packaging film flowing from the top to the bottom along the filling chute 21 is reduced, and the generation of wrinkles in the folded folded packaging bag is suppressed.
(4) When the rotational position adjustment knob 35 is rotated counterclockwise when viewed from the front of the packaging machine, the tip of the screw portion of the rotational position adjustment knob 35 is rotated to advance forward, and the rotational position adjustment knob 36 is rotated to the right when viewed from the rear of the packaging machine. As a result, the tip of the screw portion of the rotational position adjustment knob 36 rotates in a screwed manner and advances in the forward direction, and the rotational position adjustment plate 39 is moved in the forward direction.
(5) The rotational position adjusting plate 39 moved in the forward direction moves in an arc shape around the left mounting shaft 31, and the lower portion (such as the charging cylinder 26) of the filling chute 21 retracts backward in the packaging machine. It becomes like this.
(6) For this reason, the slack of the packaging film flowing from the top to the bottom along the filling chute 21 increases, and a large amount of contents (raw material) can be filled by inflating the folded folded packaging bag. become able to.
(7) By adjusting the rotation position adjustment knob 35 and the rotation position adjustment knob 36 clockwise or counterclockwise by the above-described configuration and operation, the lower side of the filling chute 21 main body is adjusted in the front direction or the rear direction. As a result, it is possible to suppress the generation of wrinkles in the finished packaging bag and to obtain an optimal packaging bag.

  The inside of the filling chute 21 provided with the position adjusting means as described above is slid down while the contents are in direct contact with each other. A phenomenon occurs that the powder adheres and the powder falls off. And if this powder fall off, all the contents weighed correctly will not fall into the packaging bag, but some will adhere to the inside of the filling chute and the filling value will fluctuate. The filling chute 21 is clogged and does not fall.

  For this reason, in the packaging machine of the present invention, when the fixed operating time has elapsed, the set screw 42 and the set screw 43 are screwed and detached, and the plate-like member 40 to which the position-adjusted filling chute 21 is fixed is removed and filled. The inside of the chute 21 is washed. After the cleaning, the plate-like member 40 to which the position-adjusted filling chute 21 is fixed is placed at the same position as before the removal, and the set screw 42 and the set screw 43 are screwed and fixed. As a result, the mounting adjustment position of the filling chute 21 does not fluctuate, and the entire filling chute 21 can be removed and cleaned by a simple operation (one-touch operation). It is possible to reduce labor in the cleaning operation.

  Further, the plate-like member 40 is provided with a notch that is perforated in a U-shape for fitting the filling chute 21, and the wall member 41 is welded along the notch-like notch. Yes. In the vicinity of the wall member 41, there is a powder content 50 deposited due to the dust rising phenomenon that occurs during the filling operation. The wall member 41 has an L-shaped seal in which a part of the deposited powder content 50 is directly below. It is dammed so that it does not fall into the bracket. As a result, it becomes possible to prevent the powder contents scattered outside the filling chute from falling down due to the powder rising phenomenon from falling onto the L-type seal fitting, and the heat seal part finishes worse due to the combustion of the contents scattered on the surface of the L-type seal fitting or Contamination of the surface of the packaging bag with the scattered powder can be reduced. When the entire filling chute 21 is removed and cleaned, the powder content 50 deposited on the plate-like member 40 is also cleaned and removed.

  As mentioned above, in the said Example, although demonstrated using the example of an L-shaped sealing metal fitting type automatic packaging machine, such a filling chute is limited to the L-shaped sealing metal fitting with which the vertical seal bar and the horizontal seal bar were integrated. However, various types of seal fittings can be employed. For example, the present invention is also applied to a case where a vertical seal bar and a horizontal seal bar are separately installed and a packaging film is conveyed using a feed roll that performs an intermittent operation.

It is a front view which shows the L type metal fittings type automatic packaging machine which concerns on this invention. It is a side view which shows the L type metal fittings type automatic packaging machine which concerns on this invention. It is a front view of the filling chute in the L type seal metal fittings type automatic packaging machine concerning the present invention. It is a top view of the filling chute in the L type seal metal fittings type automatic packaging machine concerning the present invention. It is a front view of the filling chute in the conventional L type metal fitting type automatic packaging machine. It is a side view of the filling chute in the conventional L type seal metal fittings type automatic packaging machine.

Explanation of symbols

1 L-shaped seal bracket type automatic packaging machine
10 Packaging roll
11 Packaging material supply motor
12 Hopper
13 Weighing turntable
14 Stepping motor
15 Main motor
16 Reducer
17 Belt conveyor
18 Cutter device
19 Feeding roll
20 L-shaped seal bracket
21, 121 Filling chute
22 Switchboard
23, 123 Bag making guide
24 Reinforcing member
25, 125 Input section
26, 126 Input cylinder
30 Right side mounting shaft
31 Left mounting shaft
32 Right side mounting shaft support
33 Left side mounting shaft support
34 Left / right position adjustment knob
35, 36 Rotation position adjustment knob
37 Right base plate
38 Left base plate
39 Rotation position adjustment plate
40 Plate member
41 Wall members
42, 43, 44, 45 Set screw
50 Accumulated powder content
127 Right side attachment
128 Left side attachment
FX packaging film
FY Folded packaging film

Claims (4)

A folding chute that folds the central portion of the packaging film while transferring the packaging film substantially vertically downward, and puts the contents into the packaging bag formed by the sealing device;
A sealing device that forms a bag shape by performing vertical sealing and horizontal sealing on the folded packaging film using a seal fitting, and seals the charging port after the contents are charged into the bag; ,
An automatic wrapping machine comprising a feeding roll for appropriately transporting a large number of packaging bags made by the filling chute and the sealing device,
The filling chute fixes a bag making guide part for folding the central part of the packaging film, a charging part for charging the contents, a charging cylinder for guiding the charged contents into the packaging bag, and a filling chute to the automatic packaging machine. It consists of a mounting part,
The mounting portion includes a mechanism for adjusting the position of the entire filling chute in the left-right direction when viewed from the front of the packaging machine, a mechanism for adjusting the lower side of the filling chute main body before and after the front of the packaging machine, and these two position adjusting mechanisms. A filling chute for an automatic packaging machine, comprising: a plate-like member for fixing the entire filling chute including an automatic packaging machine.   The mechanism for adjusting the position of the entire filling chute in the left-right direction prevents the occurrence of misalignment of the finished packaging bag, and the mechanism for adjusting the lower side of the filling chute main body in the front-rear direction is provided on the finished packaging bag. The plate-like member that suppresses the generation of wrinkles and fixes the entire filling chute to the automatic packaging machine can be cleaned by removing the entire adjusted filling chute by screwing on and off the mounting screw. 2. The filling chute for an automatic packaging machine according to claim 1, wherein the whole of the adjusted filling chute can be fixed again in a correct position by screwing and tightening a mounting screw later.   2. The automatic packaging machine according to claim 1, wherein the plate-like member is provided with a cut portion perforated for fitting the filling chute and a wall member welded around the cut portion. Filling chute.   4. The automatic packaging machine according to claim 3, wherein the wall member is dammed so that the scattered contents accumulated on the plate-like member due to the dusting phenomenon do not fall toward the L-shaped seal fitting. 5. Filling chute.

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