JPH0318324Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention forms a continuous bag in which a plurality of bags arranged in a vertical line with the opening facing the side are formed continuously at the perforation position. The present invention relates to an automatic filling device that fills each bag with contents after separating the bags into each bag.

[Conventional technology]

As a method for continuously filling bags with contents,
For example, JP-A No. 58-112923 and Utility Model Application No. 58-94611
As disclosed in No. 1, a system in which multiple bags are separated and held one on top of the other, and each bag is taken out with a suction cup or the like and fed to a filling section,
As disclosed in No. 47007 and Japanese Patent Application Laid-Open No. 52-94296, the openings of a plurality of bags formed separately for each bag are shifted, and tape is applied to these in sequence, and the openings of the bags are opened while feeding the tape. A method of opening and preparing for filling is known.

[The problem that the idea aims to solve]

However, in the former case, there is a limit to the number of bags that can be held at one time, and the need to replenish the bags is troublesome, and in the latter case, the process of attaching the bags to tape increases costs. It had the disadvantage of becoming

In view of the above-mentioned circumstances, the present invention focuses on the fact that multiple bags are continuously manufactured as a raw fabric, and this raw fabric is attached to a filling device as it is without separating it into individual bags, and separation and filling are performed. To provide an automatic filling device which performs work in one flow and has extremely high work efficiency, prevents meandering of continuous bags, always keeps the bags in the correct position during filling, and eliminates filling defects. Its purpose is to

[Means to solve the problem]

In the present invention, a continuous bag is formed in which a plurality of bags are arranged in a row with the openings facing the sides at perforations, and the bags are separated into each bag at the perforations, and then the bags are filled with contents. A guide section that pulls out and guides the continuous bag from the original fabric, a separating section that separates the continuous bag into individual bags at perforations, an expanding section that opens the tightly closed opening of each bag in preparation for filling, and a guide section that pulls out and guides the continuous bag from the original fabric; The filling unit for filling bags is sequentially arranged in the conveying direction of continuous bags as described below.

The guide section keeps the continuous bags pulled out from the original fabric in the correct position in the width direction and delivers them to the separation section, and then always holds the opening of the bags in a fixed position when filling the separated bags. This is to eliminate filling defects, and is constructed by attaching a position regulating member that contacts the side edge of the continuous bag to an elongated guide roller disposed between the fabric support section and the separation section.

The separation section separates the continuous bags fed from the guide section into individual bags at its perforations, and has a first pinch roll and a second pinch roll adjacent to each other in sequence. The second pinch roll placed on the wide opening side is set to have a higher conveyance speed than the first pinch roll when separating continuous bags, and due to the speed difference, the continuous bags are separated into individual bags at the perforations. ing. Alternatively, the first and second pinch rolls may be rotated at the same speed, and when the perforation is between both pinch rolls, the speed of the first pinch roll may be reduced or stopped. That is, it is sufficient that the conveying speed of the second pinch roll is higher than that of the first pinch roll when separating the continuous bags.

[Effect]

According to the present invention as described above, filling is performed in the following manner.

The continuous bag is guided while being positioned by the side edges of the bag coming into contact with the position regulating member due to the axial force of the guide roller, and is conveyed by the guide roller to the separating section. Therefore, the continuous bag does not shift in its width direction.

The continuous bags brought to the separating section are separated at perforations by the speed difference between the first and second pinch rolls, and become separate bags.

The second pinch rolls pinch the separated bags and convey them to the widening part, but the first pinch rolls, which were pinching the leading ends of the continuous bags, temporarily release the pinch force. Therefore, if there is a shift in the width direction at the leading end of the continuous bag, the width direction is corrected by the abutment force exerted by the position regulating member on the side edge of the continuous bag.

The separated bag is opened at the widening part and then filled with the contents.

〔Example〕

Hereinafter, embodiments of the present invention shown in the accompanying drawings will be described.

FIG. 1 is a perspective view showing the entire device of this embodiment.
On the right side of the device frame 1, there is a material support arm 2 that rotatably supports a material P made of a continuous bag 9 in a roll shape.
is provided. The continuous bag 9 is placed in a state where its opening is located on the left side with respect to the transport direction arrow X in the figure.
A large number of bags are continuously formed at perforations 92.

Above the web support arm 2, a guide section A, a separation section B, an enlarged opening section C, and a filling section D are arranged in this order on the upper surface of the apparatus frame 1.

The guide section A has elongated guide rollers 3, 3 that are rotatably supported by support arms 31 extending from the frame 1, and guides the continuous bags 9 in the conveying direction. It is sufficient that at least one guide roller 3 is provided, and a continuous bag 9 is provided on the right side of the guide roller 3 so that the bags are conveyed at the correct position in the width direction in the subsequent process. A regulating roller 32 is set as a position regulating member that regulates the position of the side edge. Note that the reference roller 3 attached to the left end position of the guide roller 3
3 is for determining the reference position of the continuous bag 9 in the width direction. Therefore, if different widths are set for continuous bags depending on their type, the regulation roller 32 is set at the above width position with reference to the reference roller 33 in a fixed position, and thus the continuous bags are set on both sides. Positioning in the width direction is achieved by the edges coming into contact with both rollers 32, 32.

Further, even if the above-mentioned original fabric is folded as shown in FIG. 6, it can be passed through the guide section A in exactly the same manner.

Separation part B consists of a pair of first pinch rolls 4.
1, 41' and second pinch rolls 42, 42', and the upper rollers 41, 42 of both pinch rolls
And between the lower rollers 41', 42', there are a plurality of belts 43, 43, .
..., 43', 43'... are each stretched.
A first sensor 45 for detecting the perforation 9 of the continuous bag is disposed between the first and second pinch rolls, and the first pinch rolls 41 and 41' are connected to the perforation machine of the first sensor 45. The rotation stops upon receiving the eye detection signal, and immediately after that, the upper and lower rolls 41, 41'
The upper roll 41 is set to rise slightly in order to release the contact pressure, and then return to the contact pressure before the next separation operation at the perforation. Note that third pinch rolls 44, 44' are disposed at the forward end of the separating section B in the conveying direction, and between the second pinch rolls 42, 42', the upper and lower rollers 44, 42, Conveying belts 51 and 51' are stretched across 44' and 42'.

In front of the separating section B in the X direction, an enlarged opening section C is provided at a position on the side of the opening of the bag 91, which is conveyed by the belts 51 and 51' after being separated.
The widening part C includes a pressing body 6 located above the opening of the bag 91 to widen the opening, and a pressing body 6 located to the side of the opening to widen the opening. The chuck body 7 is gripped and moved to a filling section D, which will be described later.

As shown in detail in FIG. 2, the pressing body 6 is an air cylinder 6 whose upper portion is rotatably supported.
At the tip of the rod 62 that moves up and down, there is a pressing piece 6 that is pressed at an appropriate position against the opening of the bag 91.
3 and 63, and the lower part of the air cylinder 61 is connected to a horizontal lever 64 rotatably connected to the air cylinder 61.
a, 64b and the rod 67 of the other air cylinder 66 that operates horizontally via the vertical lever 65.
It is connected to the. The material of the pressing piece 63 has a coefficient of friction between the pressing piece 63 and the bag 91.
Something greater than that of the other is adopted.
The two air cylinders 61 and 66 are set so that the latter rod 67 operates toward the bottom of the bag (toward the right in FIG. 2) immediately after the former rod 62 descends.

On the other hand, the chuck body 7 has upper and lower chuck pieces 71 and 72 that can be opened and closed.
5, the upper chuck piece 72 is connected to the lower chuck piece 71 by a parallel link 73, and between the chuck pieces 71 and 72, the upper chuck piece 72 is tilted forward and connected to the lower chuck piece 71. A spring 74 that generates a pressing force is installed, and the rear end of the upper chuck piece 72 is bent into an L-shape, and the bent portion 76 is connected to the air cylinder 66.
A locking piece 68 attached to the tip of the rod 67
The spring 74 is held against the tensile force of the spring 74. Further, at a position parallel to the locking piece 68 in the forward direction in the conveying direction (on the right side in FIG. 2), as the belt 75 runs, the bent portion 76 of the upper chuck piece starts to lock, causing the parallel link to stand up. A cam plate 69 is provided. For that purpose, the thickness of the cam plate 69 is gradually increased rearward so that the bent part 76 is gradually retracted and a parallel link is erected. The bent portion 76 is formed as shown in FIG.
9, the locking piece 68 locks with the locking piece 68.

In addition, in the conveyance direction of the bag 91, the third pinch roll 4
A second sensor 60 that detects the tip of the bag 91 is disposed in front of the bag 91, and the second sensor 60 measures the width of the bag 91, the conveyance speed, the distance between the second sensor and the pressing body 6, etc. Taking this into consideration, when the center of the bag 91 reaches the position of the pressing body 6, a signal is generated by the timer to activate the cylinder 6.

Next, the filling section D is operated by a blower (pipe) 81 that blows air into the opening of the bag 91, in which the sheet below the opening is gripped by the above-mentioned chuck body 7, and the bag is opened wide by the air. It has a piston body (not shown) that pushes the contents into the opening. It is preferable that the chuck body increases the gripping force of the pair during the filling operation by the piston body.

Next, the operation of this embodiment having the above structure will be explained with reference to FIGS. 3 to 5 which show the order of operation of the pressing bodies.

First, in FIG. 1, the leading end of the continuous bag 9 is pulled out from the original fabric P, and guided by the guide rollers 3 of the guide section A to the first pinch rolls 41 and 41' of the separation section B.
are being guided to. The continuous bag 9 is transferred to the second pinch roll 4 by the first pinch rolls 41, 41'.
2, 42', and then the first sensor 45
detects the leading end of the continuous bag 9, and when the first perforation 92 comes between the pinch rolls 41, 42, the first pinch rolls 41, 41' stop, and the continuous bag 9 moves to the second pinch rolls 42, 42. 42' in the direction of conveyance, the bags are separated at perforations 92 and become independent bags. Immediately after that, the upper roller 41 of the first pinch roll rises and the belts 43, 4
3' is separated on the upper roller 41 side, the pinch force is released. Therefore, the continuous bag 9 is movable in the width direction, and if the tip of the continuous bag 9 is misaligned in the width direction, the side edge of the continuous bag 9 will be moved in the guide section. The position is corrected by the contact force acting on the side edge of the continuous bag 9 between the regulation roller 32 attached to the guide roller 3 and the reference roller 33. Note that since this correction is performed for each bag in each separation operation, the amount of deviation that occurs is small.

Next, after a certain period of time has elapsed, the upper roller 41 descends again, and the new leading end of the continuous bag 9 is conveyed to the second pinch rolls 42, 42'.

On the other hand, after being separated and becoming independent, it is conveyed to the widened part C while being sandwiched between the belts 51 and 51'. When the second sensor 60 detects the tip of the bag 91, the timer activates the pressing body 6 when the center of the bag 91 reaches the position of the pressing body 6. That is, in FIG. 3, the rod 62 of the air cylinder 61 is lowered, and the pressing piece 63 presses the upper surface of the sheet above the bag 91.

At the same time, the chuck body 7 attached to the belt 75 also moves forward, and the rear bent portion 76 of the upper chuck piece 72 of the chuck body 7 starts to engage with the cam plate 69, and as the chuck body 7 advances, the bent portion 76 retreats rearward. Then, the link 73 of the chuck body 7 is made to stand up against the spring 74. As the chuck body 7 further advances, the bent portion 76 comes off the cam plate 69, and the bent portion 76 is locked to the locking piece 68 attached to the tip of the rod 67 of the cylinder 66 with the link 73 erected. (See Figure 3 (1)). Next, air cylinder 66
When the rod 67 is pushed forward, the pressing piece 63
The friction force causes the upper sheet at the opening of the bag to slide toward the bottom of the bag, while the chuck body 6
The upper chuck piece 72 is tilted forward by the force of the spring 74 as the rod 67 moves forward, and the lower chuck piece 7
1 to grip the sheet below the opening (see FIG. 4). After that, air cylinder 6
1's rod 62 rises (see FIG. 5).

The bag 91 gripped by the chuck body 7 as described above is subsequently conveyed and brought to the filling section D, and the opening is opened wide by the blower 81.
The contents are filled into the bag by a piston body (not shown).

The operation of each part from the second pinch roll to the filling section described above determines the conveyance speed of the bag as appropriate.
The bag is made without stopping.

[Effect of idea]

As described above, according to the present invention, since continuous bags are drawn out from the original fabric and used separately, once the original fabric is set, many bags can be filled continuously. , work efficiency is improved, and the continuous bag separation can be followed by expansion and filling, which contributes to shortening the process, and the provision of a position regulating member in the guide section, Continuous bags prevent meandering and the bags are always expanded and filled in a fixed position, which ensures that the gripping force is maintained during filling, and as a result, there is no chance of the bags coming off during filling and causing filling defects. , reliability is improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the device of the present invention;
Fig. 2 is a perspective view showing the configuration of the enlarged opening section, and Figs. 3 to 5 show the operation order of the enlarged opening section in Fig. 2. Each figure (1) is a plan view, and each figure (2) ) is a front view, 6th
This figure is a perspective view showing another original fabric that can be employed in the apparatus of FIG. 1. 3... Guide roller, 32... Position regulating member (regulating roller), 41, 41'... First pinch roll, 42, 42'... Second pinch roll, 9...
Continuous bag, 91... bag, 92... perforation, A...
Guide part, B...Separation part, C...Enlargement part, D...Filling part.

Claims (1)

[Claims for Utility Model Registration] (1) After separating a continuous bag formed by a plurality of bags arranged in a row with the openings facing the sides at perforations into each bag at the perforation position, A device for filling bags with contents: a guide section that guides the continuous bag, a separation section that separates the continuous bag at a perforation, an opening section that widens the opening that is in close contact with each other, and a section that fills the bag with the contents. The filling section is arranged sequentially in the conveying direction of the continuous bags, the guide section is formed by attaching a position regulating member that contacts the side edge of the continuous bags to a guide roller that guides the feeding of the continuous bags, and the separating section is arranged in the conveying direction of the continuous bags. It has a first pinch roll and a second pinch roll adjacent to each other in sequence, the second pinch roll is set to have a higher conveyance speed than the first pinch roll when separating continuous bags, and the first pinch roll is used to prevent continuous bags from being separated. An automatic filling device characterized in that, when the pinch force is released, the continuous bag is pushed against a position regulating member by the axial force of the guide roller to correct the position. (2) The first pinch roll and the second pinch roll in the separating section rotate at the same speed when the bags are not separated, and when the bags are separated, after the perforation is detected by the sensor,
Utility model registration claim No. 1 characterized in that the rotation of the first pinch roll is stopped for a set time.
Automatic filling device described in (1).