JPH055130Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Purpose of the invention (industrial application field) This invention is used in the technical field of automatic filling and packaging for filling bags with contents, and is especially used for automatic filling and packaging equipment. The present invention relates to a device for positioning a bag in a fixed position.

(Problems to be solved by conventional techniques and inventions) Conventionally, this type of device has been designed to forcibly move a bag fed to a fixed receiving plate in one or two directions at the same time on the receiving plate using a feed roller. It is known to position the bag by bringing the bag into contact with a regulating member provided on the side of the receiving plate.

However, with conventional equipment, when feeding in one direction with rollers, it is not possible to position the bag in other directions, and when feeding in two directions at the same time, the bag is forcibly fed in both directions at the same time. Problems include wrinkles occurring in the bag due to slight misalignment of the bag, or bags that are initially tilted to be fed tilted, and furthermore, the bag tends to be pushed too hard against the regulating member, resulting in inaccurate positioning. The dot was hot. Moreover, it is difficult to deal with this problem because the above-mentioned tendency differs depending on the material and size of the bag.

The present invention solves the above-mentioned conventional problems and provides a bag positioning device for an automatic filling and packaging device that can deal with any kind of bag and can accurately position the bag in two directions.

(2) Structure of the invention (Means for solving the problems) In order to solve the above-mentioned problems, the present invention uses a press-contact rotation system that receives bags from a bag supply means and feeds them one by one in one direction. and a pair of feed rollers that move the bags in the one direction that is the feed direction in order to feed the bags in a fixed position to an automatic filling and packaging device located ahead of the feed rollers in the feed direction and laterally to the direction. and a device for positioning in another direction perpendicular to the feed roller, the receiving plate having one side facing the exit of the feed roller and capable of rotating from a horizontal position to a downwardly inclined position by a set angle around the one side, the receiving plate A one-way regulating member is attached to the one-direction forward setting position, a second-direction regulating member is arranged at the other-direction front setting position, and the bag on the receiving plate is fixed to the receiving plate when the receiving plate is in the horizontal position. One-way feeding means for advancing the bag on the plate in one direction, and after the bag is released from the X-direction feeding means, the receiving plate rotates and comes to an inclined position, and at the same time applies a frictional force to the lower surface of the bag. and a means for moving in another direction to advance in the other direction.

Here, the above-mentioned one-way forward setting position refers to a position where there is enough room for the bag to slide down on the receiving plate that is at the inclined position after being released from the one-way feeding means, and the other-direction forward setting position refers to the position where the bag has enough room to slide down on the receiving plate that is at the inclined position after being released from the one-way feeding means. This refers to the position preset according to the positional relationship with the bag receiving section.

Various types of feeding means in one direction and the other direction can be considered, but for example, the one-way feeding means is a one-way feeding roller that contacts the upper surface of the receiving plate when the receiving plate is in a horizontal position, and the other direction feeding means is , the roller may rotate in the other direction and protrude slightly upward from a window provided in the receiving plate when the receiving plate is rotated to the inclined position.

(Function) In the device of the present invention as described above, the bag is positioned as follows.

First, a bag is fed to the device of the present invention by a pair of feed rollers. At this time, the receiving plate is in a horizontal position, and the one-way feeding means is activated so that the leading end of the bag reaches the vicinity of the one-way regulating member of the receiving plate.

The receiving plate is then rotated so that the receiving plate is tilted downward in one direction. At this time, the one-way feeding means no longer acts and the bag is in a free state, so it slides down in one direction due to its own weight and reaches the one-way regulating member position.
At the same time, the other direction feeding means acts as the receiving plate tilts. Since the other direction feeding means applies a frictional force from below the bag to the bottom surface of the bag, the bag is not subjected to any unreasonable force, so that the bag moves to the other direction without losing its position positioned in one direction. and reaches the other direction regulating member position.

The bag is thus positioned in a set position in one direction and in the other direction at right angles thereto.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

Note that orthogonal coordinates X and Y are set in the figure to clarify directionality.

FIG. 1 is a perspective view showing the general structure of an automatic filling and packaging apparatus employing the apparatus of this embodiment.

As seen in the figure, the automatic filling and packaging apparatus of this embodiment consists of a bag feeding device and a filling device.

The bag feeding device is equipped with a roll material 1 supported on a material support shaft 1', an ultraviolet sterilizer 7, a separating section 10, and a bag positioning device 15 in order in the direction X in which the material is pulled out.

The original film 1 is formed into a tube film shape under sterile conditions, flattened, and then wound into a roll shape, so both sides 1a and 1b are folded parts and open. Of course, there is no
Seals of a constant width are applied at appropriate intervals, and a perforation 3 is provided at the center of the sealed portion 2 of a constant width, so that a bag 5 whose entire circumference is sealed is continuously strung. It has a form.

An ultraviolet sterilizer 7 is disposed adjacent to the original fabric 1 and at a forward position in the X direction. The ultraviolet sterilizer 7
, which sterilizes the continuous bags pulled out from the original fabric 1 by irradiating them with ultraviolet rays on their outer surfaces as they pass through, has passage ports 8 for the continuous bags at the front and rear, and a germicidal lamp that emits ultraviolet rays inside. (not shown).

At a front position of the ultraviolet sterilizer 7, a separating section 10 is provided which is made up of a pair of feed rollers 10A and 10B located at the front and rear. feed roller 10
Both A and 10B consist of upper and lower pinch rollers,
The front feed roller 10A is the rear feed roller 10.
It rotates a little faster than B (see Figure 2),
Due to this speed difference, the continuous bags are separated at the perforations 3 to form a single bag 5'.

A bag positioning device 15 is provided adjacent to the exit side of the front feed roller 10A. As shown in FIG. 3, the bag positioning device 15 has a receiving plate 16 whose one side faces the exit of the front feed roller 10A and which is rotatable up and down about the one side. On one side above, there is a receiving plate 16
Feeding rollers 17, 17 are provided as X-direction feeding means that contact the receiving plate 16 when the receiving plate 16 is in a horizontal position. The other side of the receiving plate 16 has an X of the bag 5'.
An X-direction regulating member 18 for regulating the forward position of the bag 5' in the Y direction is attached, and a Y-direction regulating member 18 for regulating the forward position of the bag 5' in the Y direction is attached to a position close to the side edge of the receiving plate 16 in the Y direction. 19 are provided. Further, the receiving plate 16 is provided with a window 19', which is recessed directly below the window 19' when the receiving plate 16 is in a horizontal position (see FIG. 3A). ) A roller 17' serving as Y-direction feeding means is provided at a position that projects slightly upward from the window 19' when the receiving plate 16 rotates downward (see FIG. 3B).

The filling device includes a rotary part (not shown) that rotates intermittently around O in FIG.
(FIG. 4), it has an enlarged opening part 50, a filling part 60, a degassing/temporary sealing part 70, a main sealing part 80, and an unloading part 90. The H position is an empty position.

The rotary section is similar to that in a conventional rotary type filling and packaging device, and although its mechanism is not shown, it has a bag holding mechanism with bag expansion maintaining suction cups at eight locations on the circumference, A to G. At each position, the bag is moved intermittently while holding the bag with the bag opening facing upward.

At position A, a bag receiving section 20 is arranged.
The bag receiving section 20 may be the same as the conventional one, and as shown in FIG. We are prepared.

At position B, a cutting section 30 is arranged, as shown in detail in FIG. 4A.

The cutting section 30 includes a pair of bag holding members 31 and 32 and a blade 33.

One bag presser 31 is disposed outside the path of the bag 5', and is adapted to reciprocate with one bag presser 32 so as to be able to move toward and away from each other. Its shape has a groove portion 34 that is open on the outer surface and extends in the longitudinal direction for escape of the blade body 33, and
Furthermore, the upper portion of the outer surface is provided with a protruding step portion 35 that protrudes and extends in the same direction. A plurality of vacuum holes 36 are provided in the upper portion of the groove portion 34 on the outer surface. A semicircular protrusion 37 is formed at the longitudinally central position in the lower portion of the groove portion 34 on the outer surface.

The other bag holder 32 is located inside the path of the bag 5', and is adapted to reciprocate toward and away from the one bag holder 31. The other bag holder 32 is provided with a groove 38 on the inner surface thereof, which has a length that spans almost the entire length of the groove 34 of the one bag holder 31, and a recessed step corresponding to the convex step 35 in the upper part. 39, and a recess 40 for receiving the protrusion 37 is formed at the lower center position.

Furthermore, at the rear position of the other bag presser 32,
The blade 33 passes through the groove 38 of the other bag holder 32 and enters the groove 34 of one bag holder 31.
is installed. A serrated blade is formed at the tip edge of the blade body 33.

Further, a receiving tray 41 is provided below one of the bag holders 31 to receive the chips when the bag 5' is cut and slide them downward.

Next, an enlarged opening 50 is provided at position C. The widening portion 50 includes an opening suction cup 51 and a widening piece 52, as shown in FIG. 5A.

The opening suction cups 51 are arranged in pairs (51a and 51b) facing each other on both sides of the bag 5' at a central position near the bag opening.
It is arranged as follows. One opening suction cup 51a
Two opening suction cups 51b on the other side are provided adjacent to each other in the horizontal direction, and two opening suction cups 51b are provided adjacent to each other in the vertical direction.
Both are arranged at intersecting positions on the bag surface. Both can reciprocate in a direction perpendicular to the bag surface, and after moving to a position where they bite into each other as shown in Figure 5B, they retreat to a position where the bag opening is opened as shown in Figure 5A. It's summery. This retraction distance is sufficient to open the bag mouth to such an extent that the next pair of proximate widening pieces can be inserted into the bag mouth.

The mouth widening piece 52 is a tongue piece 52 extending downward from the arm body.
a and 52b, both tongue pieces move up and down from a position above the bag opening to enable insertion and removal into the bag, and when entering the bag opening, they are separated from each other by a predetermined opening distance in a direction perpendicular to the bag surface. It is possible to move in the (opposite) direction.

Furthermore, at a side position of the bag 5' slightly below the bag opening, there is an opening maintaining suction cup 53 supported by the bag holding mechanism.
is provided. The opening maintaining suction cup 53 is composed of a pair of suction cups 53a and 53b facing each other on both sides of the bag, similar to the opening suction cup 51 described above.
The positions of a and 53b are set to maintain the above-mentioned expanded state.

Note that a hatching portion 54 indicated by a two-dot chain line directly below the opening maintaining suction cups 53a and 53b is a portion held by a bag holding mechanism (not shown).

At position D, a filling section 60 having a nozzle 61 for filling the contents from above toward the mouth of the bag is disposed, and at positions E, F, and G, a degassing/temporary sealing section 70 and a main sealing section are disposed in sequence. 80, and finally, at position G, a discharge section 90 with a conveyor 101 is arranged.

Note that the respective parts at the positions D to G may be the same as those of the conventional device, and detailed description thereof will be omitted here.
All of the above parts are located in a clean room.

Next, the operation of this embodiment as described above will be explained step by step.

First, a tube film is taken out from the roll material 1 and sent to the ultraviolet sterilizer 7. Since the inner surface of the tube film has already been sterilized at the time of molding, all of the inner and outer surfaces are sterilized by passing through the ultraviolet sterilizer 7.

The tube film then enters the separating section 10.
In the separation section 10, the front feed roller 10A rotates faster than the rear feed roller 10B, so the tube film is separated into one bag 5' at the perforation 3 due to this speed difference.

The single bag 5' is sent to the bag positioning device 15. Initially, the bag positioning device 15 has its receiving plate 16 in a horizontal position and in contact with the feed roller 17 (see FIG. 3A). Therefore, the bag is sent forward in the X direction by the feed roller 17. Then, the receiving plate 16 rotates downward and tilts as shown in FIG. 3B.

When the receiving plate 16 is tilted, the bag 5' reaches the X direction regulating member 18 due to the feed of the feed roller 17 and its own weight, and the bag 5' reaches the X direction regulating member 18, and the bag 5'
Roller 1 now slightly protrudes from 9'
7' until it hits the Y direction regulating member 19.
direction and thus brought into position in both the X and Y directions.

Next, the positioned bag 5' is sucked by a suction cup 22 in the bag receiving section 20, and the arm 21 rotates upward to be held by a bag holding mechanism (not shown). Then, the rotary mechanism rotates intermittently, and the bags suspended by the bag holding mechanism sequentially stop at positions B to G.

When the bag 5' comes to the cutting part 30 at position B, the other bag presser 32 and one bag presser 31 are brought into contact with and pressed against each other and press the upper edge of the bag 5'. Then, vacuum pressure acts on the vacuum hole 36 and the bag 5'
Aspirate the upper edge of. Next, the blade 33 acts, passes through the slot 38 of the other bag holder 32, pierces the bag 5', and tears the bag 5' into the slot 34 of the one bag holder 31.
Go inside. At this point, the bag 5' is completely cut (see Figures 4B and C). At this time, wrinkles are generated at the bag opening due to the action of the protrusion 37 and the recess 40. Air will then flow into the wrinkled area, making it easier to open the bag mouth (see FIG. 4A), which will be described later. After that, the other bag presser 32 and the blade 3 are removed.
3 retreats to the original position. At this time, the upper edge portion of the bag as the cut waste is held by the vacuum pressure of the vacuum hole 36 and is not attached to the other bag holder 32. When the other bag presser 32 and the blade body 33 are completely retracted, the vacuum pressure is released. Then, the upper edge portion of the waste bag, which is bent by the convex step portion 35 and the concave step portion 39, easily separates from one bag holder 31, and the receiving tray 4
It falls to 1.

The bag, which is provided with a bag opening at its upper edge, is thus brought into the widening at position C.

In the case of the enlarged mouth part 50, first, the opening suction cup 51 opens the bag mouth a little. That is, one opening suction cup 51a and the other opening suction cup 51b move to a position where they bite into the bag 5' so as to pinch the bag 5'. Therefore, more wrinkles occur at the bag opening, and air flows in from there (No. 5).
(See Figure B). And the opening suction cups 51a, 51
b is moved back and the bag opening is easily opened. next,
This opening has a pair of tongue pieces 52a,
52b enters downward, and then both tongue pieces retreat in a direction away from each other. Then, at the opening opening position, the opening maintaining suction cups 53a and 53b stick to the bag 5' to keep the bag in the opening opening state (see FIG. 5C),
Thereafter, the tongue pieces 52a and 52b of the mouth expanding piece move close to each other and are pulled out upward.

The bag whose opening has been expanded as described above is directly brought to the filling section 60 at position D and filled with the contents.

The bag 5' filled with the contents is then degassed at the degassing/temporary sealing section 70 at position E, and after being temporarily sealed to prevent air from entering the bag, it is moved to position F.
The product is sealed and completely packaged at the final sealing section 80 by heat welding, for example, and then brought to the carry-out section 90 at position G, where the bag holding mechanism is released and the packaging bag as a product is transferred to the conveyor 10.
1 and carried out.

(3) Effects of the invention As described above, according to the invention, the bag can be positioned by utilizing the bag's own weight on the inclined receiving plate in the X direction, and by acting only on the bottom surface of the bag in the Y direction. Therefore, the attitude and position of the bag can be accurately determined by the X and Y direction position regulating members. As a result, in subsequent steps, filling and packaging is performed while being held in the correct position and orientation, eliminating defects in filling and packaging.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view showing an automatic filling and packaging machine employing an embodiment of the present invention, Fig. 2 is a schematic perspective view of the separation section of the machine shown in Fig. 1, and Fig. 3 is a bag of the machine shown in Fig. 1. A schematic perspective view of the positioning device part is shown.
Figure 4A shows a schematic perspective view of the cut section of the device shown in Figure 1, and Figure B shows a schematic perspective view of the cut section of the device in Figure 1. -B cross section, the same figure C shows the CC cross section of the same figure A, Figure 5A shows a schematic perspective view of the enlarged opening part of the apparatus shown in Figure 1, and the same figure B shows the opening at the bag mouth part of the same figure A. A partial perspective view showing the state in which the suction cup is sucked into the bag.
FIG. 5'... Bag, 10A, 10A... Pair of feed rollers, 16... Receiving plate, 17... One-way feeding means (X direction feeding means) (X direction feeding roller), 1
7'... Other direction feeding means (Y direction feeding means) (Y direction feeding roller), 18... One direction regulating member (X
direction regulating member), 19...other direction regulating member (Y direction regulating member), 19'...window.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A pair of feed rollers that receive bags from a bag supply means and rotate in pressure contact to feed the bags one by one in one direction;
In order to feed the bag at a fixed position to an automatic filling and packaging device located ahead of the feed roller in the feed direction and laterally with respect to the feed direction, the bag is fed in one direction that is the feed direction and at right angles thereto. A device for positioning in the direction, comprising a receiving plate with one side facing the exit of the feed roller and rotatable by a set angle from a horizontal position to a downwardly inclined position about the one side, and the receiving plate is at the forward setting position in one direction. Attach a one-way regulating member to the front set position in the other direction, place the other-direction regulating member at the front set position in the other direction, and then move the bag on the receiving plate to the above-mentioned position when the receiving plate is in the horizontal position. a unidirectional feeding means for moving the bag forward in the direction; and after the bag is released from the unidirectional feeding means, the receiving plate rotates and comes to an inclined position, and at the same time applies a frictional force to the lower surface of the bag to move the bag in the other direction. A bag positioning device for an automatic filling and packaging device, characterized in that the bag positioning device is provided with another direction feeding means for moving the bag forward. (2) The one-way feeding means is a one-way feeding roller that contacts the top surface of the receiving plate when the receiving plate is in the horizontal position, and the other-direction feeding means is a one-way feeding roller that contacts the top surface of the receiving plate when the receiving plate is rotated to the inclined position. Bag positioning for an automatic filling and packaging device according to claim (1) of the registered utility model, characterized in that the roller rotates in the other direction and protrudes slightly upward from a window provided in the receiving plate. Device.