JP2011079536A - Bag manufacturing and filling apparatus and bag manufacturing and filling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag manufacturing and filling apparatus capable of improving production efficiency by decreasing a loss time related to a falling distance when a measured article to be filled is fed into a chute member and made to fall down and filled into a packaging material positioned below the chute member. <P>SOLUTION: The packaging material S is transferred into a cylindrical shape along the outer face of a cylindrical feeding chute 7, and an overlapped part is sealed by a vertical sealing means 11, and a horizontal sealing part on the lower side is formed by a horizontal sealing means below the lower side opening 7c of the feeding chute 7. At this time point, the article to be filled having been already metered by a metering apparatus 5 is fed into the feeding chute 7 and is stored in the lower end part by a chute opening/closing means 17. When a horizontal sealing part on the lower side is formed, the chute opening/closing means 17 is operated and the lower side opening 7c of the feeding chute 7 is opened, and the article to be filled is made to fall down and is filled. The falling distance of the article to be filled is not Ta from the upper end of the feeding chute 7, but Tb. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a bag making and filling apparatus and a bag making filling method for producing a product by filling a filling material such as tea leaves at the same time while producing a bag by a heat welding method such as a tea bag.

As this type of bag making and filling apparatus, for example, the one described in Patent Document 1 by the present applicant is known. As a device configuration, a weighing unit is provided at the upper part of the device body, and the weighed material is dropped via a cylindrical chute member extending in the vertical direction, and the vertical seal portion and the lower horizontal seal portion are already provided. After being formed into a bag shape and filled in a packaging material positioned below the chute member and fed a predetermined amount, an upper lateral seal portion is formed and separated.
The packaging material is sent in a cylindrical state covering the outer surface of the chute member, and simultaneously with the formation of the upper horizontal seal portion of the previous bag, the lower horizontal seal portion of the next bag is formed and It is possible to drop and fill the weighed objects to be filled, and by repeating this, tea bags and the like can be produced continuously.

JP 2008-150071 A

As described above, in the conventional method disclosed in Patent Document 1 or the like, after the lower lateral seal portion is formed, that is, after the packaging material is formed in a bag shape that can accommodate the filling object, the weighing is performed. In order to throw the filled material into the chute member and drop it, the filled material will drop the vertical distance of the chute member with the timing when the sealing of the lower lateral seal portion is completed as a starting reference. .
For this reason, after the lower side seal portion is formed, it is necessary to have time for the filling material to fall at the above-mentioned distance, which results in a loss time and a decrease in production efficiency.
Although it is possible to start dropping before the formation of the lower side seal part is completed, if the filling is susceptible to air resistance, such as tea leaves, the drop / fill timing should be set for all bags. It is extremely difficult to make it uniform.

  The present invention has been made in view of such a current situation, and provides a bag making and filling apparatus and a bag making filling method capable of improving the production efficiency by reducing the loss time related to the dropping of the filling material. Is the purpose.

  In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a packaging material feeding means for superimposing a thermally weldable packaging material while feeding in the longitudinal direction, and a longitudinal direction of the packaging material fed by the packaging material feeding means. A vertical seal means for forming a vertical seal portion by sealing, and an upper horizontal seal portion and a lower horizontal seal by performing a horizontal seal on the upper and lower portions sandwiching the filling portion in the packaging material on which the vertical seal portion is formed. A horizontal sealing means for forming a seal portion, and a cylindrical chute member extending in the vertical direction; the object to be filled is dropped from above the chute member; In the bag making and filling apparatus having a filling means for filling the filling material into the packaging material in which the side seal portion on the side is sealed, the lower opening of the chute member can be arbitrarily opened and closed. At the lower end of the chute member It is the bag making and filling machine, characterized in that a chute opening and closing means for storing the amount already with product.

  According to a second aspect of the present invention, in the bag making and filling apparatus according to the first aspect, the chute opening and closing means is provided at a lower end portion of the bar-like member provided in the chute member so as to extend in the vertical direction. And a pad having a size for closing the lower opening of the chute member, and an opening / closing drive member for moving the bar-shaped member in a vertical direction to open and close the lower opening. This is a bag making and filling device.

  According to a third aspect of the present invention, in the bag making and filling device according to the second aspect, the pad has an inclined surface that guides the filling object downward in the longitudinal direction so as to expand the filling material from the lower end of the rod-shaped member in the radial direction. It is the bag making and filling apparatus characterized by having.

  According to a fourth aspect of the present invention, in the bag making and filling apparatus according to the second or third aspect, the rod-shaped member has a hollow shape and is connected to a static elimination air generating means, and the static elimination air is supplied into the chute member. A bag making and filling device characterized by being supplied.

  The invention according to claim 5 is a cylindrical shape extending in the vertical direction after forming a vertical seal portion by superimposing a heat-weldable packaging material in the vertical direction and forming a lower horizontal seal portion on the packaging material. In the bag making and filling method of dropping the filling material measured from above the chute member and filling the packaging material located below the chute member, and then forming and separating the upper side seal portion of the packaging material Before the lower side seal part is formed, the measured filling material is stored in the lower part of the chute member in advance, and immediately after the lower side seal part is formed, the chute member is stored. The bag opening filling method is characterized in that the lower side opening is opened for filling.

  According to the present invention, it is possible to shorten the time taken to put the weighed filling material into the chute member, drop it, and fill the packaging material for each bag, so that the productivity efficiency can be greatly improved. it can.

It is a general | schematic front view of the bag making filling apparatus which concerns on one embodiment of this invention. It is a perspective view which shows the use condition of a chute opening / closing means. It is a perspective view of a chute opening / closing means. It is a figure which shows a bag making filling process, and is a figure which shows the state which stored the to-be-filled material for the next bag in the lower end part of the input chute just before sealing the upper side seal part after filling to-be-filled material. is there. In the figure showing the bag making and filling process, the sealing and cutting of the upper side seal part of the front bag and the lower side seal part of the next bag are completed, and the lower opening of the charging chute is opened to the next bag. It is a figure which shows the state with which the to-be-filled material is filled. It is a timing chart which shows a comparison with the present invention and the past in a bag making filling process.

A bag making and filling apparatus and a bag making and filling method according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an outline of the overall configuration of the bag making and filling apparatus 1. In FIG. 1, reference numeral 3 denotes an apparatus main body, and a measuring device 5 is provided on the upper portion of the apparatus main body 3 for predetermined measurement of tea leaves as an object to be filled.
A charging chute 7 as a chute member extending in the vertical direction is provided below the weighing device 5 in the apparatus main body 3. The input chute 7 includes a hopper portion 7a positioned below the weighing device 5 and a straight portion 7b extending linearly from the lower end of the hopper portion 7a. The weighing device 5 and the charging chute 7 constitute a filling means.
The outer peripheral surface of the input chute 7 is a guide surface for guiding the packaging material S in a cylindrical shape. As the packaging material S, a heat-weldable material such as a nylon nonwoven fabric or a polyethylene fiber nonwoven fabric is applied.

Four opposing rollers 9 are provided at the position of the straight portion 7 b of the charging chute 7 in the apparatus main body 3, and two opposing rollers 9 are arranged on the back side of the charging chute 7 with two opposing rollers as one set. ing. The two pairs of opposed rollers 9 constitute a packaging material feeding means.
An ultrasonic sealing device 11 as a vertical sealing means is provided between the two pairs of opposed rollers 9 in the vertical direction. The ultrasonic sealing device 11 is constituted by an ultrasonic horn 11a and a receiving roll device 11b arranged to face the ultrasonic horn 11a.
Below the lower opening 7 c of the input chute 7, an ultrasonic sealing device 41 as a horizontal sealing means is arranged. The ultrasonic sealing device 41 is constituted by an ultrasonic horn 41a and a receiving roll device 41b arranged to face the ultrasonic horn 41a.

The ultrasonic sealing device 41 is supported by the frame member 15 fixed to the device main body 3 so as to be capable of reciprocating in the thickness direction of the paper (a direction orthogonal to the axial direction of the input chute 7).
The tea bag B1, which is finally sealed and cut by the ultrasonic sealing device 41, falls from the central opening of the frame member 15, passes through the discharge chute 19 provided below the device main body 3, and is out of the machine. To be discharged.

Inside the charging chute 7 is provided chute opening / closing means 17 for storing the tea leaves weighed by the weighing device 5 inside the lower end of the charging chute 7 and waiting.
As shown in FIG. 2, the chute opening / closing means 17 is provided in a hollow bar-like member 21 provided in the throwing chute 7 so as to extend in the vertical direction, and is provided at the lower end of the stick-like member 21. A pad 23 having a size for closing the side opening 7c and an opening / closing drive member (actuator) 25 for opening and closing the lower opening 7c by vertically moving the rod-like member 21 are provided. The opening / closing drive member 25 is configured to be driven by a solenoid.
The upper end portion of the rod-shaped member 21 is connected to a static elimination air generating means (not shown) via a hose 27.
As shown in FIG. 3, a plurality of holes 29 for discharging static elimination air are formed in the side surface of the rod-shaped member 21 over substantially the entire region in the vertical direction.

The lower end 23a of the pad 23 is formed in a circular cross-section corresponding to the lower opening 7c of the charging chute 7, and a packing 24 is provided on the lower peripheral surface thereof, and the lower opening 7c is closed. It has airtightness to seal so that the filling material does not leak.
The pad 23 is connected to the rod-shaped member 21 with a radial end portion instead of a central portion thereof, and an object to be filled is spread from the lower end portion of the rod-shaped member 21 in the radial direction between the connection portion 23b and the lower end portion 23a. Thus, it has the inclined surface 23c which guides to the vertical direction downward. The inclined surface 23c is formed in a smooth curved surface.
Since the pad 23 is connected to the rod-shaped member 21 via the end portion away from the center portion thereof, the rod-shaped member 21 is positioned in the charging chute 7 so as not to prevent the fall of the filling material as much as possible, that is, the charging chute 7 It can arrange | position in the inner peripheral surface vicinity.

Next, a method for manufacturing a tea bag as an extraction bag by the bag making and filling apparatus 1 will be described.
The packaging material S wound up in a roll shape is mounted on a feeding wheel (not shown), fed out at its starting end, guided by a guide roller (not shown), and guided along the outer surface of the charging chute 7.
It is fed by the upper opposing roller pair 9 in a state of covering the outer surface of the charging chute 7, and is held in a state in which the side edges are overlapped to form a cylinder.
Next, ultrasonic sealing is performed by the ultrasonic horn 11a of the ultrasonic sealing device 11 and the receiving roll device 11b to form a vertical seal portion.

As shown in FIG. 4, the cylindrical packaging material S is fed by the lower opposed roller pair 9, and the ultrasonic wave is received when the lower end of the packaging material S reaches a predetermined position below the lower opening 7 c of the input chute 7. Sealing and cutting is performed by the ultrasonic horn 41a and the receiving roll device 41b of the sealing device 41 to form the lower horizontal sealing portion Sb1.
At this time, the weighed tea leaves TL have already fallen and stored inside the lower end of the charging chute 7. When the seal and cut of the lower side seal portion Sb1 is completed, the opening / closing drive member 25 operates in response to the signal, and moves the bar-like member 21 downward to open the lower opening 7c of the closing chute 7.
When the lower opening 7c is opened, the tea leaves TL stored and waiting inside the lower end of the charging chute 7 fall at a height Tb (see FIG. 1) that is extremely shorter than the conventional drop distance Ta. The filling portion Bj of the packaging material S in a bag shape is filled.

When it is determined by a control means (not shown) that the filling has been completed after the opening / closing drive member 25 has been operated, the opening / closing drive member 25 is operated to move the rod-shaped member 21 upward, The lower opening 7c of the chute 7 is closed. When the lower opening 7c is closed, the weighed tea leaves TL for the next bag are put into the feeding chute 7 and stored in the lower end portion inside.
With the completion of the filling, the packaging material S is sent at a pitch corresponding to the height of the tea bag B1. When this feed is completed, the ultrasonic sealing device 41 starts sealing and cutting of the upper side seal portion of the front bag and the lower side seal portion of the next bag. FIG. 4 shows the state at this time.

As shown in FIG. 5, when the seal and cut of the upper side seal portion Sb2 of the front bag and the lower side seal portion Sb3 of the next bag is completed, the front bag is separated and discharged from the discharge chute 19 to the outside of the machine. At the same time, the lower opening 7c of the charging chute 7 is opened in the same manner as described above, and the tea leaves TL that have been stored and waiting fall down the height Tb and are filled in the filling portion Bj of the next bag.
The tea leaves TL stored inside the lower end of the charging chute 7 are guided by the inclined surface 23c of the pad 23 so as to expand in the radial direction. As a result, it is not filled in uneven positions as a lump, but is well separated or loosened and dispersed and filled in a uniform state.

FIG. 6 is a comparison timing chart of the present invention and the conventional method in the bag making and filling process. “A” in FIG. 6A indicates the opening operation of the lower opening 7c by the chute opening / closing means 17, and “CLOSE” indicates the closing operation.
As shown in FIG. 6, in the present invention, the tea leaves weighed in the lower end portion of the charging chute 7 are previously dropped and stored, and the waiting time can be absorbed within the process time of feeding and lateral sealing. .
That is, the measured tea leaves can be dropped and stored without waiting for completion of the seal of the lower seal portion.
Therefore, what actually occurs in the continuous process is only the time for dropping the height of Tb which is considerably lower than Ta, and the loss time can be greatly reduced as compared with the conventional method.
Compared to the conventional method, it is possible to shorten the time as indicated by the symbol M in FIG. 6 for each bag, and the greater the number of production, the higher the efficiency.

There is a concern that static electricity is generated in the charging chute 7 and the tea leaves adhere to the rod-shaped member 21 or the pad 23. In this embodiment, in order to prevent this, the static elimination air is supplied in the charging chute 7 as described above. I am doing so.
The static elimination air is ionized air by DC corona discharge or the like, and the static electricity is neutralized by supplying this static elimination air.
As a result, the chute opening / closing means 17 operates in the charging chute 7 or the tea leaves are brought into contact with the bar-shaped member 21 or the like, and the tea leaves are not aggregated or adhered to the bar-shaped member 21 or the pad 23 and do not fall. It is possible to satisfactorily prevent malfunctions caused by static electricity.

The embodiment of the present invention has been described in detail above. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change without departing from the gist of the present invention. included.
For example, in the configuration of the chute opening / closing means 17, a hinged openable / closable lid is provided in the lower opening 7 c of the closing chute 7 in place of the pad 23, and this lid is opened and closed by an open / close drive source such as a small motor via a wire. You may make it do.
Moreover, although the ultrasonic sealing apparatus was used as the vertical sealing means and the horizontal sealing means, sealing may be performed with a known heat sealing apparatus having a heat source.
Moreover, although the tea leaf was illustrated as a to-be-filled object, it can implement similarly in a linear body, a powdery body, a granular material, a crushing piece, etc.

DESCRIPTION OF SYMBOLS 1 Bag making filling device 7 Input chute 7c as chute member Lower opening 11 Ultrasonic sealing device 17 as vertical sealing means 17 Chute opening / closing means 21 Bar-shaped member 23 Pad 23c Inclined surface 25 Opening / closing drive member 41 Ultrasonic wave as horizontal sealing means Sealing device S Packaging material Sb1 Lower horizontal seal portion Sb2 Upper horizontal seal portion TL Tea leaves as filling material

Claims (5)

Packaging material feeding means for superimposing the heat-weldable packaging material while feeding in the vertical direction;
Vertical sealing means for forming a vertical seal portion by performing vertical sealing of the packaging material sent by the packaging material feeding means;
Horizontal sealing means for performing horizontal sealing on the upper and lower portions sandwiching the filling portion in the packaging material in which the vertical sealing portion is formed to form an upper horizontal sealing portion and a lower horizontal sealing portion;
A state in which a cylindrical chute member extending in the vertical direction is provided, the filling material measured from above the chute member is dropped, and the lower lateral seal portion is sealed below the chute member In a bag making and filling device having filling means for filling the packaging material with the filling material,
The lower opening of the chute member can be opened and closed arbitrarily, and in the closed state, the chute member has chute opening and closing means for storing the measured filling material at the lower end of the bag. apparatus. The bag making and filling device according to claim 1,
The chute opening / closing means includes a rod-like member provided in the chute member so as to extend in the longitudinal direction, and a pad provided at a lower end portion of the rod-like member and having a size for closing the lower opening of the chute member; A bag making and filling apparatus comprising: an opening / closing drive member that moves the bar-shaped member in a vertical direction to open and close the lower opening. The bag making and filling device according to claim 2,
The bag making and filling apparatus, characterized in that the pad has an inclined surface that guides an article to be filled downward in a longitudinal direction so as to expand a filling object from a lower end portion of the rod-shaped member in a radial direction thereof. The bag making and filling device according to claim 2 or 3,
The bar-shaped member has a hollow shape, is connected to a static elimination air generating means, and supplies static elimination air to the inside of the chute member. The heat sealable packaging material is fed in the vertical direction and overlapped to form the vertical seal part.After forming the lower horizontal seal part on the packaging material, it is weighed from above the cylindrical chute member extending in the vertical direction. In the bag making and filling method of dropping the filled material and filling the packaging material located below the chute member, and then forming and separating the upper side seal portion of the packaging material,
Before the lower side seal portion is formed, a weighed object is stored in advance in the lower portion of the chute member, and immediately after the lower side seal portion is formed, the chute member A bag making and filling method characterized by opening and filling a lower opening.

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