JPS5836650Y2 - Bag chuck device of bag filling and packaging machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to a chuck device that holds both sides of the mouth edge of a bag, suspends the iron bag, and opens the iron mouth in order to fill the packaged items. .

The bag filling and packaging machine is equipped with multiple sets of chuck devices, that is, multiple sets of two clips, and while these clips are rotated by a conveyor mechanism, the bags suspended by each clip are opened and covered during the rotation. After filling the package, the bag's opening is closed and the opening is melt-sealed.

More specifically, a pair of clips is attached to a vertical substrate of a suitable area and rotates together with the substrate to manipulate the bag.

The conventional clip is supported on the board through arms of appropriate lengths, and the two arms are rotated around the base of each arm, and the clip is attached to the tip of each arm. The opening of the bag is opened by bringing the bags relatively close to each other.

In other words, the bag opens when it expands.
The base plate must not interfere with the expansion of the bag, and therefore each arm supporting the clip must be long enough so that the base plate does not interfere with the expansion of the bag.

For this reason, especially in a bagging and packaging machine with a vacuum function, when a vacuum box is formed by the substrate and a lid box that covers it, the volume of the vacuum box must be large enough to correspond to the length of the arm of the clip. However, there was a drawback that the vacuum efficiency decreased accordingly.

In view of the above points, the present invention has been developed by attaching a pair of pieces laterally to the front surface of the substrate which is arranged vertically and which constitutes a vacuum box together with the lid material, and which has a function of holding both sides of the bag.
A pair of clips are arranged on the front side of each piece, and the clips are supported on each piece through parallel links so as to be able to swing laterally, while the clips are attached to both ends of a U-shaped arm arranged on the back side of the board. Oppositely fixed shafts are rotatably supported by penetrating both side wall surfaces of the board, and levers are respectively fixed to each of the shafts inside each of the side walls,
In the slits formed at the tips of each of these levers,
engaging pins at both ends of an elongated groove-shaped actuation bar disposed at the lower front side of each piece, and slidably engaging rollers provided on the lower surfaces of both pieces into grooves of the actuation bar, respectively; Furthermore, a guide located on the back side of the board acts on the U-shaped arm, so that the clip is usually placed close to the board so that when the bag is inflated, the clip separates from the board and prevents the expansion of the bag. It is configured to eliminate the possibility of failure.

Embodiments of the present invention will be described below based on the drawings.

In the embodiment shown in FIG. 1, a pair of clips 2a and 2b are supported on a substrate 1.

In addition, if the bag A is to be sealed in a vacuum environment, the substrate 1 will be used as a part of a member constituting a vacuum chamber.

As shown in FIG. 2, a chamber 3 recessed toward the back is formed in the upper part of the substrate 1, and two pieces 5, 5 are fixed to the back wall 4 of the chamber 3 with screws 6.

Specifically, the holes in the back wall 4 into which the respective screws 6.6 are inserted are formed as elongated holes 7, 7, respectively, and the pieces 5, 5 can be displaced within the length range of the elongated holes 7, 7. .

Further, both pieces 5, 5 have pieces 8, 8 protruding from the front, respectively, and internally threaded holes 9, formed in these pieces 8, 8.
9 is engaged with a symmetrical bolt 11.11 of a tension rod 10.

On the other hand, each of the clips 2a and 2b has a movable piece 14 pivotally supported at the tip of an L-shaped main body 13 via a pin 15, and the movable beak 17 at one end of the movable piece is supported by the tension of a spring 16. The bag A is held between a fixed beak 18 formed on the main body, while the other end of the movable piece 14 and a lever 19 pivotally supported on the main body are connected via a bar 20.

A plurality of links 21.21 are pivotally supported on the respective main bodies 13 of both clips 2 a and 2 b via pins 22.22, and the other ends of each of the links 21.21 are attached to the piece 5 with pins 23. Both clips 2a and 2b are supported on the base plate 1 by being pivotally supported via a .23.

Also, a shaft 25.25 passing through both side walls 24.24 of the room 30.
A lever 26 is fixed to the inner end of each lever 25, and a notch 27° 27 formed at the upper end of these levers 26, 26
Both ends of the groove-shaped actuating bar 28 are supported in a suspended manner by the groove-shaped actuating bar 28, and both clips 2a are inserted into the groove of the actuating bar 28.
, 2b, respectively. c7) While engaging the rollers 29, 29, 29, 29 provided at the lower end, the opposite ends of the shafts 25, 25 are connected to the U-shaped arm 30. A wheel 31 bearing the arm is connected to the rod-shaped guide 32 via the arm.

The illustrated embodiment is constructed as described above, and its operation will be explained below.

As shown in FIG. 2, the wheel 31 receives resistance from the guide 32 due to the tensile force of the spring 33, but when the guide 32 is in a relatively upper position, the lever 26 is displaced counterclockwise about the shaft 25. Therefore, the actuating bar 28 is positioned toward the left in the drawing, whereas when the guide 32 is in a relatively lower position, the actuating bar 28 is positioned toward the right in the drawing.

This comparison is illustrated in the left half and right half of FIG.

In short, when the actuating bar 28 is pushed out in the front direction of the substrate 1 as in the left half state compared to the right half state, the parallel link 21.21 engages with the actuating bar 28 via the rollers 29, 29. rotates counterclockwise to push out the left clip 2b to the front and bring both clips 2a and 2b closer together.

For this reason, the bag A expands in diameter while separating from the substrate 1.

Therefore, it becomes possible to fill the bag A with the object to be packaged.

Next, by loosening the screw 6.6 and rotating the bar 10 via the dial 34, the symmetrical screws 11.11 at both ends
With this action, the distance between the pieces 5, 5, that is, the distance between the clips 2a, 2b, can be arbitrarily adjusted depending on the width of the bag used.

In this case, the side clips 2a and 2b are rollers 29...
along the channel-shaped actuating bar 28.

In addition, in FIG. 2, the lever 36 is swung following the shape of the guide 35, and the piece 38 fixed to the shaft 37 is used to move the tire 39.
When kicked, the clips 2a and 2b open the bag A.

As described above, the present invention includes a pair of clips 2a that are pivotally supported on two pieces 5, 5 through a plurality of links 21 and 21, respectively.
, 2b, and a groove-shaped actuating bar 28 installed between levers 26.26 that are pivotally supported on both side walls 24.24 of the base plate 1.
9.29, and the pair of clips 2a, 2b are moved away from the substrate 1 while approaching each other by the action of displacing the operating bar 28 in the front and back direction via both the levers 26.26. In this way, the bag opening is enlarged, compared to the conventional example in which the entire clip arm rotates.
The parallel links 21.21 have a small radius of rotation and allow the clip to protrude significantly.

Therefore, the clip can be moved far away from the substrate only when the iron mouth is inflated to a round shape in order to fill the bag with items to be packaged, and the obstruction of the substrate to the expansion of the bag can be eliminated.

Therefore, when a vacuum box is configured with the substrate 1 and the lid box that covers it, and a vacuum function is added, the box volume can be made smaller compared to the conventional product in which the clip does not move back and forth, and the vacuum efficiency can be improved and the vacuum Power loss can be reduced.

In addition, the two pieces 5, 5 are attached to the substrate 1 in such a manner that they can be displaced laterally, and the two clips 2a can be moved by simply variably adjusting the positions of these pieces 21 and 21 in the lateral direction.
, 2b move along the groove of the actuating bar 28 and have the effect of being easily set at intervals depending on the width of the bag used.

[Brief explanation of drawings]

FIG. 1 is a sectional view in plan view showing an embodiment of the present invention (
However, (I-I line view in Figure 2) Figure 2 is the previous II
-II line sectional view. 1... Board, 2a, 2b... Clip, 5... Piece, 10... Threaded rod, 1
3...Main body, 14...Movable piece, 17.
...Movable beak, 26...Lever, 28...
...Operating bar 30...Arm, A...
··bag.

Claims (1)

[Scope of utility model registration request] A pair of pieces 5, 5 are attached to the front surface of the substrate 1, which is arranged vertically and forms a vacuum box with a lid material facing the front surface thereof, in a state in which the displacement can be adjusted in the lateral direction. A pair of clips 2a and 2b capable of holding the edges are arranged on the front surface of each piece 5, and each clip 2a
, 2b to each piece 5゜5 parallel links 21.2
The shafts 25.25 are fixed to opposite ends of a U-shaped arm 30 disposed on the back surface of the substrate 1 so as to be able to swing laterally through the substrate 1.
4 and rotatably supports each side wall 2.
A lever 26, 26 is fixed to each of the shafts 25, 25 on the inside of the 4° 24, and these levers 26, 26,
In the slits 27, 27 formed at the tips of 26,
The pins at both ends of the elongated groove-shaped actuation bar 28 disposed at the lower front side of each piece 5, 5 are engaged, and the rollers 29, 29 provided on the lower surface of both pieces 5, 5 are engaged with the actuation bar 28, respectively. A bag chuck device for a bag filling and packaging machine, characterized in that a guide 32 is slidably engaged in a groove of the substrate 1 and is located on the back side of the substrate 1 so as to act on the U-shaped arm 30.