JP2886104B2 - Packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging apparatus suitable for continuously carrying out bagging and packaging of granular material such as rice.

[0002]

2. Description of the Related Art Various types of packaging devices for bagging and packaging powders and the like are known. For example, JP-A-1-
The packaging device disclosed in JP-A-124533 is one of them. This packaging device has a structure including a bag making mechanism and a filling mechanism.The bag making machine forms bags from a flat tube film, and transfers the bags to the filling mechanism. After the bag is held by the holding means, and the bag is opened in this state, the bag is filled with the granular material, and the opening is sealed and discharged. In this packaging apparatus, various improvements are made to the bag making mechanism section and the filling mechanism section, so that the packaging speed is considerably increased as compared with the conventional granular material packaging apparatus. However, the bag making by the bag making mechanism and the series of operations from opening of the bag in the filling mechanism, filling of the bag with the granular material, sealing of the opening, and discharging of the product are performed simultaneously in parallel. However, since a series of operations in the filling mechanism are performed successively, there is naturally a limit in increasing the packaging speed.

In other words, in order to further increase the packaging speed, a series of processes of supplying a bag or bags already formed, opening the bag, filling the bag with the object to be packaged, sealing the opening, and discharging the product are performed. It is necessary to be able to perform more and more packaging operations simultaneously in parallel. Examples of a packaging device that meets such requirements include a rotary table type packaging device disclosed in Japanese Patent Application Laid-Open No. 62-52002 and Japanese Patent Application Laid-Open No.
An endless rotary traveling type packaging device disclosed in Japanese Patent Application No. 56101 is known.

The rotary table type packaging apparatus disclosed in Japanese Patent Application Laid-Open No. Sho 62-52002 discloses a series of the above-mentioned series of bags which are held by a plurality of holding means provided along the outer periphery of the rotary table as the rotary table rotates. The operation can be performed concurrently. As a result, although the packaging speed can be further increased, the problem of an increase in the size of the apparatus cannot be avoided. In other words, the rotary table must have a circumference enough to arrange the sections for performing a series of operations simultaneously in parallel, and support the heavy bag filled with the items to be packaged while generating centrifugal force. However, since it rotates, a considerably solid structure is required, which inevitably leads to an increase in overall size.

[0005] In the case of the rotary table type, the direction in which the product is discharged must be crossed with the direction in which the bag is supplied. There is also a disadvantage that there are many.
In other words, when a plurality of packaging devices are arranged side by side, or when a packaging device and another device are arranged side by side, there is a problem of interference with an adjacent device in relation to a product discharge direction. It is necessary to increase the interval, and the space utilization efficiency is reduced accordingly.

On the other hand, an endless rotating traveling type packaging apparatus disclosed in Japanese Patent Application Laid-Open No. 6-56101 uses a structure in which a pair of traveling bodies (chains) that rotate endlessly and traveling are used as bag supporting means. By moving the bag, the bag is positioned at a station for a series of operations, and the respective operations are performed simultaneously in parallel. In this respect, problems such as the rotary table type can be avoided. However, in this packaging apparatus, since the bag is supported in a state of standing on the endless rotating traveling body, there is a problem that the apparatus becomes large in the vertical direction.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a packaging apparatus capable of performing a series of operations simultaneously and performing high-speed packaging has been downsized as a whole. The purpose is to plan.

[0008]

SUMMARY OF THE INVENTION A packaging device according to the present invention comprises a pair of traveling bodies running in parallel and endlessly rotating in a horizontal direction, and a plurality of traveling bodies attached to each traveling body so as to face each other and form a pair. Bagging station having a bag supply mechanism, an opening station having an opening mechanism, a filling station having a filling mechanism,
And a sealing station having a sealing mechanism are sequentially arranged in the traveling direction of the traveling body along the upper side of the traveling body, and in the bag feeding station, the left and right side edges of the upper portion of the bag at the pair of holders. By holding the bag, the bag is held in a hanging state, the bag held by the pair of holders is opened by the opening mechanism at the opening station, and the bag is covered by the filling mechanism at the filling station. The package is filled, and at the sealing station, the opening of the filled bag is sealed by a sealing mechanism.

According to this packaging apparatus, since the bag is supported by the traveling body that rotates endlessly in a hanging state to perform a series of operations, the overall size can be reduced. In other words, the traveling body necessarily has a certain vertical thickness due to its structure, but by supporting the bag in a hanging state, the inside of the traveling body having a vertical thickness can be effectively used, The overall size can be reduced.

[0010] In such a packaging apparatus, since the bag is supported in a hanging state, it is important to hold the bag in a state where the packaged object is filled and a large weight is applied, and this holding is reliably and stably performed. Is a preferable condition for the overall stable operation. Therefore, in the present invention, a bag support mechanism is provided below the traveling body, and the lower end of the bag is supported by the bag support mechanism between the filling station and the sealing station. As a result, it is possible to reliably and stably hold the bag when the weight increases.
The overall stable operation can be improved.

[0011] Further, in such a packaging device, since the bag is also supported in a hanging state, the bag is opened between the opening station and the filling station and the width thereof is reduced, so that the width of the bag is flexibly changed. Being able to respond is also a favorable condition in terms of overall stable operation. In other words, in order to support the bag in a hanging state, the left and right side ends of the bag are sandwiched by the pair of holders, so that the width of the bag and the interval between the pair of holders are related, so that It is desirable to be able to reliably and stably hold the bag in a flexible manner when the bag is opened and its width is reduced.
Therefore, in the present invention, a distance adjusting means for adjusting the distance between the pair of holders is provided, and the bag is opened at the opening station and the filling station, and the width of the bag is reduced in correspondence with the opening of the bag. The interval is narrowed by the interval adjusting means.

Further, it is desirable for such a packaging apparatus to be able to quickly respond to a type change in which the size of a bag changes. Therefore, in the present invention, a second gap adjusting means for adjusting the gap between the pair of holding bodies is provided. The distance between them can be adjusted as a whole.

The above-mentioned packaging apparatus can be configured to receive a supply of bags that have already been formed, or to receive a supply of a flat tube film and then sequentially form bags. It is also possible. In the case of the latter structure, the bag supply mechanism of the bag supply station introduces a continuously supplied flat tube film from above the traveling body, and holds the leading end of the tube film from the introduction unit. Pulling means for pulling the tube film downward, a sealing means for sealing the tip of the tube film, and a cutting means for cutting the tube film, and the left and right side ends of the tube film pulled by the drawing means It is preferable that the holding portion is sandwiched between the holders, and in this state, the bag is formed by performing the sealing by the sealing means and the cutting by the cutting means to supply the bag to the holder.

[0014]

An embodiment of the present invention will be described below.
1 and 2 show the principle structure of the packaging apparatus according to the present embodiment. As can be seen in each of these figures, the packaging device
The vehicle includes a pair of chain conveyor type traveling bodies 1 and 1 which run in parallel in an endless direction in the direction of arrow X in a horizontal state. Each of these traveling bodies 1, 1 has a plurality of holding bodies 2, 2,.
Are attached at regular intervals. Are arranged such that the holder 2 of one traveling body 1 and the holder 2 of the other traveling body 1 concentrically face each other, as shown in FIG. The facing faces are paired.

The packaging apparatus is provided with a bag supply station 3, an opening station 4, a filling station 5 and a sealing station 6 in this order along the upper side of the traveling bodies 1 and 1, and a bag below the traveling bodies 1 and 1. A support mechanism 7 is provided.

As shown in FIGS. 3 to 5, the holding body 2 includes a pair of holding members 10 and 10 which open and close by rotating as indicated by an arrow Y in FIG. A rotating mechanism for rotating the holding members 10, 10 includes a pair of link members 11, 11, one end of which is connected to each of the holding members 10, 10, and the other end of which is connected. ,
And a connecting rod 12 connected to the connecting rod 11 and capable of moving forward and backward in the directions indicated by arrows Za and Zb, and a spring 13 serving as urging means for urging the connecting rod 12 in the direction indicated by arrows Zb. By pressing the connecting rod 12 by a pressing means (not shown) against the urging force of 13 and moving the connecting rod 12 in the Za direction indicated by the arrow, the two holding members 10 and 10 are turned to the open state indicated by the imaginary line in the figure. When the pressing force of the pressing means is released, the urging force of the spring 13 returns the two holding members 10 and 10 to the closed state.

The holding body 2 is attached to the traveling body 1 via a slide rail 16 slidably supported by a guide frame 15, and the whole of the holding body 2 can move forward and backward as indicated by an arrow V. . This forward / backward movement is performed via a guide receiving body 17 attached to the slide rail 16. Specifically, the guide receiving body 17 has a structure in which a bearing 18 is attached to a tip of a support rod 19, and a gutter-shaped track guide 20 (FIGS. 4 and 5) with which the bearing 18 is engaged is shown in FIG. The above-mentioned forward and backward movement is performed in accordance with the movement as indicated by the arrow W in FIG.

This forward / backward movement has two functions. That is, one is to change the mold, that is, to move forward and backward to change the distance between the holder pairs when the size of the bag changes,
Otherwise, when the width of the bag P narrows due to the opening or filling of the packaged object,
This is because the distance between the pair of holders is reduced by that amount. The forward / backward movement for the type change is performed by moving the track guide 20 using a feed screw mechanism (not shown) as a drive source. In this case, the track guide 20 moves as a whole. In addition, the movement of the track guide 20 for adjusting the width of the bag according to the change due to the opening or filling is performed only between the opening station 4 and the filling station 5. Separation blocks 20b, 20b (FIGS. 1 and 2) are provided on the track guide 20 for a portion corresponding to the space therebetween, and the separation blocks 20b, 20b are independently moved. The operation is performed at high speed using a cylinder as a drive source.

That is, the guide receiver 17 and the track guide 20
The separation block 20b and the driving source for moving the same form first spacing adjusting means for adjusting the spacing between the pair of holding members corresponding to the change in the width of the bag, and the guide receiving body 17, the track guide 20 and the track guide. The drive source for moving the entirety 20 forms a second interval adjusting means for adjusting the interval at the time of the type change.

The bag supply station 3 is in charge of supplying the bags P to the pair of holders, and is provided with a bag supply mechanism 21 for this purpose. The bag supply mechanism 21 includes a pair of rollers 23 forming an introduction unit for introducing the flat tube film F supplied from a film supply mechanism 22 combined with the present packaging apparatus, and a tube supplied via the pair of rollers 23. It is provided with a draw-in / sealing body 24 which also serves as a draw-in means for drawing the film below the traveling body 1 and a sealing means for sealing the tip of the tube film, and a cutting means 25 for cutting the tube film.

The retractable / sealed body 24 has a structure in which a pair of rotating arms 28, 28 each having an electrothermal seal pad 26 and a seal receiving pad 27 attached to the tip thereof, can be opened and closed by rotating with an air cylinder 29. The entire structure can be moved up and down by up-and-down movement means (not shown). That is, the retracting / sealing body 24 clamps the leading end of the tube film F, which has risen to a predetermined position and hangs down from the roller pair 23, between the seal pad 26 and the seal receiving pad 27, and then descends to the original position while lowering to the original position. The tip of the tube film F is welded and sealed by the current application. When the retracting / sealing member 24 is lowered to the original position, the holding members 2 and 2 of the pair of holding members located at the bag supply station 3 sandwich the left and right side end portions of the tube film F (FIG. 2). Then, the cutting means 25 is operated to cut the tube film F. As a result, the holding body pair receives the supplied bag P and holds it in a hanging state as shown in FIG.

The opening station 4 prepares the bag P, which has been supplied at the bag supply station 3 as described above and is held and moved by the pair of holders, to be filled at the next filling station 5 with the object to be packaged. The opening mechanism 30 is provided for this purpose. The opening mechanism 30 includes suction pads 31, 31 that are provided to face each other and have a variable distance from each other.
1. The bag is opened by suctioning the bag from both sides by suction and widening the interval between the bags. The opening mechanism 30 can also be entirely moved up and down by vertical movement means (not shown), and normally rises to the standby position, and is lowered to the working position only at the time of opening work, so that the bag P
To avoid interference with traffic.

The filling station 5 is responsible for loading and filling the articles to be packed into the bags P opened as described above, and is provided with a filling mechanism 32 for that purpose. The filling mechanism 32 has a structure in which a predetermined amount of articles to be supplied supplied from a supply mechanism (not shown) to the weighing hopper 33 is charged and filled into the bag P via the charging cylinder 34.

The sealing station 6 is responsible for sealing the opening of the bag P in which the articles to be packaged have been loaded, and is provided with a sealing mechanism 35 for that purpose. Seal mechanism 35
Is the retracting / sealing body 24 at the bag supply station 3.
Similarly, a pair of rotating arms 3 to which an electrothermal seal pad 36 and a seal receiving pad 37 are attached, respectively.
8 and 38 are rotatable and openable by an air cylinder 39. By increasing the width of the rotatable opening and closing, the bag P
It is designed to avoid interference with movement.

The bag support mechanism 7 functions to support the filled bag P, which is held by the pair of holders, from the lower side during a period from the filling station 5 to the sealing station 6. It functions to discharge the packaged product S removed from the pair, and includes three conveyors 40a,
A table 40 formed by arranging 40b and 40c in series is configured to be entirely vertically movable by a table lifter 41 as a vertical moving means.
The height of the upper surface can be adjusted.

[0026]

As described above, according to the present invention,
It is possible to obtain a packaging apparatus that can be downsized as a whole and that can perform high-speed packaging by performing a series of operations in parallel.

[Brief description of the drawings]

FIG. 1 is a side view showing the principle structure of a packaging device according to an embodiment of the present invention.

FIG. 2 is a plan view of a principal part in the principle structure of FIG. 1;

FIG. 3 is a plan view of the holder.

FIG. 4 is a side view as viewed from a direction indicated by an arrow DA in FIG. 3;

FIG. 5 is a side view as viewed from a direction indicated by an arrow DB in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 2 Holder 3 Bag supply station 4 Opening station 5 Filling station 6 Seal station 17 Guide receiver (Spacing adjusting means) 20b Separation block (Spacing adjusting means) 21 Bag feeding mechanism 23 Introducing means 24 Retraction and sealing body (Retraction) Means, sealing means) 25 cutting means 30 opening mechanism 32 filling mechanism 35 sealing mechanism 41 bag support mechanism F tube film P bag

Claims (3)

(57) [Claims] 1. A vehicle comprising: a pair of traveling bodies which run in parallel and endlessly rotate in a horizontal direction; and a plurality of holding bodies which are attached to each traveling body so as to face each other and form a pair. A filling station having an opening mechanism, a filling station having an opening mechanism, a filling station having a filling mechanism, and a sealing station having a sealing mechanism are respectively arranged along the upper side of the traveling body in the traveling direction of the traveling body. In the case of, the bag is held in a hanging state by sandwiching the left and right side ends of the upper part of the bag with each pair of holders, and in the opening station, the bag held by the pair of holders is opened. In the filling station, the bag is filled with the material to be packed by the filling mechanism, and in the sealing station, the opening of the filled bag is opened by the sealing mechanism. In a packaging device for bagging and packing an object to be packaged such as a granular material to be sealed, the holding body is attached to the traveling body via a slide rail slidably supported by a guide frame,
And mounting a guide receiver on the slide rail, engaging a track guide having an independently movable separation block with the guide receiver, and opening the bag at the opening station and the filling station. In order to cope with the narrowing of the width, the distance between the pair of holding members can be narrowed by the movement of the separation block as the first distance adjusting means. Wherein the distance between the pair of holders can be adjusted as a whole by moving a track guide, which is an interval adjusting means. 2. The packaging device according to claim 1, wherein a bag support mechanism is provided below the traveling body, and the lower end of the bag is supported by the bag support mechanism between the filling station and the sealing station. 3. A bag feeding mechanism of a bag feeding station includes an introduction unit for introducing a continuously supplied flat tube film from above the traveling body, and a tip of the tube film introduced from the introduction unit. A retracting means for retracting the tube film to a lower side, a sealing means for sealing a distal end of the tube film, and a cutting means for cutting the tube film; and left and right side ends of the tube film retracted by the retracting means. The bag is supplied to the pair of holding members by holding the portion between the pair of holding members, and in this state, performing sealing by the sealing means and cutting by the cutting means to form a bag. 3. The packaging device according to 2.