JP2538833B2 - Inner bag fitting device for dumbole case packaging - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cardboard case packing inner bag fitting device, in which articles to be packaged such as products and articles are packaged in a cardboard case in a plastic bag or a plastic bag. It is a thing.

[0002]

2. Description of the Related Art As a form of packaging a cardboard case, if an inner bag is fitted in the cardboard case in advance and the product is put in the package, the efficiency is improved as automatic packaging. be able to. However, it is necessary to accurately fit the inner bag into the cardboard case.

Conventionally, there is a form in which the bag mouth of the inner bag is held open by using a suction pad utilizing the suction air pressure. However, when the bag inserting device is inserted into the inner bag, the holding of the bag mouth is uncertain. When it is, the inner bag cannot be accurately fitted into the cardboard case. Further, if the inner bag is uncertainly fitted in the cardboard case, it is difficult to smoothly fit the bag mouth portion back into the cardboard case lid.

[0004]

According to the present invention, a holding device 3 which holds an inner bag 2 by holding the bag mouth portion 1 from inside and outside, and an inner bag 2 which is inserted into the inner bag 2 to hold the inner bag 2 therein. A bag fitting device 5 that is press-fitted into the cardboard case 4, and is formed in a bifurcated shape at the four corners of the bag fitting device 5 and operates in the outer peripheral direction and the pressing direction so that the inside of the bag mouth part 1 In the pushing stroke portion of the bag fitting device 5 which receives the peripheral portion, it is expanded to the outer periphery of the opening lid portion 6 to perform the pushing operation so that the four corner portions are pinched over the both side surface portions and the bag mouth portion 1 The bag mouth return piece 7 that fits around the outer periphery of the lid 6
And an inner bag fitting device for a cardboard case package.

[0005]

The inner bag 2 is held and held by the holding device 3 by holding the bag mouth portion 1 from inside and outside. When the inner bag 2 comes to a position facing the bag inserting device 5, the bag inserting device 5 is inserted into the bag mouth 1. This bag inserter 5
The inner bag 2 is pushed and fitted into the cardboard case 4 in which the lid 6 is opened.

[0006] When the bag fitting device 5 is inserted into the inner bag 2, the holding device 3 is released. Further, the bag mouth folding pieces 7 are located in the inner peripheral portion of the bag mouth portion 1 of the inner bag 2 and the inner facing area of the opening cover portion 6 together with the bag fitting device 5.

A bag inserter 5 inserts the inner bag 2 into a cardboard case 4
Push fitted within, by pushing operation to expand the opening outside region of the open lid portion 6 inner bag 2 is respective bag mouth folding Kaehen 7 from the inside in the middle or end of the push fit, cardboard The bag mouth portion 1 of the inner bag 2 fitted inside the case 4 is sandwiched between the two corners by the bifurcated bag mouth folding piece 7, and the outside of the lid 6 is opened. And is fitted onto the outer peripheral surface of the opening cover 6.

As described above, the bag mouth portion 1 of the inner bag 2 has the holder 3
Since it is held by the bag, the opening of the bag mouth portion 1 and the bag holding are hard to come off, so that the bag inserting device 5 and the bag mouth folding piece 7 are accurately inserted into the inner bag 2, The position of the bag mouth portion 1 with respect to the mouth return piece 7 is constant, and the bag mouth return piece 7 has a bifurcated shape.
Thus, the bag mouth portion 1 can be accurately folded back to the outer peripheral surface by sandwiching the bag mouth portion 1 on both left and right side surfaces of the opening lid portion 6 around each corner.

Further, after the bag inserter 5 fits the inner bag 2 into the cardboard case 4, the bag mouth return pieces 7 at the four corners are opened to the outside to open the bag mouth 1 to the outside of the lid 6. And position
When the bag mouth folding piece 7 is pushed in, the bag mouth portion 1 is positioned by the corners of the bag mouth portion 1 and opened in four directions.
A series of operations to be fitted on the can be smoothly performed, and the work efficiency can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated example, this inner bag fitting device is a bag making device 8 for making an inner bag 2 from a vinyl sheet cylinder 1, and a bag mouth 1 of the bag making device 8 is held by a holder 3 A carriage 9 for moving the inner bag 2, a conveyor 10 for moving the cardboard case 4, an inner bag fitting device 11 for pushing the inner bag 2 into the cardboard case 4, and the like.

The bag-making device 8 supports a vinyl cylinder 12 in which a vinyl sheet is formed into a cylindrical shape in a rolled state .
The inner bag 2 is made into a bag by pulling it out from the feeding reel 13, and the four corners of the outlet of the vinyl cylinder 12 that is pulled out by the holder 3 are held, and the inside of the outlet of this vinyl cylinder 12 is held. The expanded cylinder body 14 is located in the
While pulling out the vinyl cylinder 12 between the guide roll 15 and the guide roll 15 for receiving 4, the electrothermal welder 16 welds it at a constant length to form a bottom portion, which is cut to form the bottomed inner bag 2. Reference numeral 23 is a guide roll, 24 is a brake, and 25 is a base.

The inner bag 2 is moved above the conveyor 10 on the side by the carriage 9 while being held by the holding device 3. On the conveyor 10, the cardboard case 4 is transferred to a position directly below with the lid 6 opened, and the bag fitting device 5 is on standby on the upper side.

The carriage 9 is moved up and down and moved laterally with respect to the machine frame, and has each holding device 3 for holding the four corners of the bag mouth portion 1, and moves upward Y during bag making. The vinyl cylinder 12 holding the bag mouth part is pulled out upward. Also, in the inner bag fitting process, it is moved in the lateral direction X. In this movement in the lateral direction X, a gap adjusting mechanism (not shown) that expands the gap between the holding devices 3 so as to widen the width of the inner bag portion of the bag making so as to fit the opening 6 of the cardboard case 4. Have. If the carriage 9 is moved from the Y direction to the X direction, the bag can be supplied more efficiently.

When the inner bag 2 opened and held by the holding device 3 comes directly under the bag fitting device 5, the bag fitting device 5 descends and the bag mouth folding piece 7 which is closed inward is inserted inside. It is inserted into the bag 2. At this time, the bag mouth portion 1 of the inner bag 2 is held between the inner side and the outer side by the holding device 3 which is electromagnetically actuated, so that the holding device 3 opens the bag according to the form of the cardboard case 4. Also, the bag mouth portion 1 does not come off from each holding device 3, and the opening is accurately held. Therefore, the bag fitting device 5, the bag mouth folding piece 7, and the like can be smoothly inserted and fitted into the bag mouth portion 1.

In the inner bag fitting device 11, a pair of left and right U-shaped bag fitting devices 5 are attached to the lower side of the lift 18 which is lifted and lowered by the expansion and contraction of the lift cylinder on the conveyor 10. The vertical guides 19 located at the four corners of the inserter 5 are provided with bag mouth folding pieces 7 which are rotatably supported toward the outside of the four corners of the corrugated cardboard case 4 to be fitted.

This bag mouth folding piece 7 has a slider 20 at the top.
On the other hand, the slider 20 is pivotally supported by a pin 21, and the slider 20 is guided along the inside of the guide 19 so as to be vertically movable. An air cylinder 22 which is expanded and contracted between the air cylinder 2 and the guide 19 is connected to the base of the bag mouth folding piece 7.
By the expansion and contraction of 2, the bag mouth-folding piece 7 is rotated inward and outward by a certain angle and is moved up and down by a certain height with respect to the guide 19. 27 is an upper limit stopper.

When such a bag fitting device 5 and the like are inserted into the inner bag 2 (FIG. 1), the respective holding devices 3 are opened, and the inner bag 2 is pushed and fitted into the lower cardboard case 4. To be done.

When the bag fitting device 5 is fitted in the cardboard case 4 and the bag mouth folding piece 7 approaches the upper end of the lid 6 (FIG. 2), it has been positioned inside the guide 19 until now. The bag mouth folding piece 7 is pin 2 by shortening the air cylinder 22.
The bag mouth portion 1 is expanded in the outer peripheral direction in order to be rotated outward by one turn (FIGS. 3 and 6). Expanded bag mouth folding piece 7
When the rotation stops, the slider 20 is guided inside the guide 19 by the shortening of the air cylinder 22 and moves downward to push down the expanding bag mouth portion 1, so that the bag mouth portion 1 is moved to the outside of the opening portion 6. It is folded back and fitted on the outer peripheral surface (FIG. 4).

When the bag mouth 1 is fitted into the opening cover 6, the air cylinder 22 is extended, the bag mouth return piece 7 is rotated inward, and the slider 20 and the guide 19 are guided. Of the inner bag 2 that is supplied by the carriage 9 after the inner bag 2 that has been pushed and fitted into the cardboard case 4 is left as it is (FIG. 5). Wait for the fitting action.

The bag mouth-folding pieces 7 provided on the guides 19 located at the four corners of the bag inserting device 5 are formed in a bifurcated shape and can be rotated on both sides of the guide 19. In order to guide the bag mouth portion 1 by folding back the left and right outer side portions of the corners of the lid opening portion 6, this folding back operation is smoothly and accurately performed. The simple air cylinder 2
In place of 2, a linear cylinder is used, and the base side of the bag mouth return piece 7 is fitted into the linear cylinder to slide, and the bag mouth return piece 7 is tensioned outward by a spring. Alternatively, the bag mouth portion 1 may be tensioned according to the opening thereof to eliminate the excessive folding back action of the bag mouth portion and reduce the damage.

When the inner bag 2 is fitted in the cardboard case 4, the inner bag 2 is transferred by the conveyer 10 and supplied with the article to be packaged. When the article to be packaged is accommodated, the bag mouth portion 1 of the inner bag 2 is detached from the opening lid portion 6 and folded, and the opening lid portion 6 is closed.

The bag fitting device 5 is arranged so that the space between the left and right sides and the guide 1 is adjusted so as to match the size of the cardboard case 4.
It is preferable that the length of 9 parts can be adjusted appropriately.

[Brief description of drawings]

FIG. 1 is a perspective view showing an operation process.

FIG. 2 is a perspective view showing an operation process.

FIG. 3 is a perspective view showing an operation process.

FIG. 4 is a perspective view showing an operation process.

FIG. 5 is a perspective view showing an operation process.

FIG. 6 is a partially enlarged front view.

FIG. 7 is a plan view thereof.

FIG. 8 is a side view of the bag manufacturing device section.

[Explanation of symbols]

 1 bag mouth part 2 inner bag 3 holding device 4 cardboard case 5 bag inserter 6 lid part 7 bag mouth folding piece

Claims (1)

(57) [Claims] 1. A holder 3 for holding the bag mouth 1 from inside and outside to hold the inner bag 2 open, and a holder 3 inserted into the inner bag 2 to push and fit the inner bag 2 into a cardboard case 4. And a bag fitting device 5 which is formed in a bifurcated shape at four corners of the bag fitting device 5 and operates in the outer peripheral direction and the pushing direction to receive the inner peripheral part of the bag mouth portion 1 In the pushing stroke portion of the inserter 5, the bag mouth portion 1 is extended to the outer periphery of the opening lid portion 6 by expanding to the outer periphery of the opening lid portion 6 and performing the pushing operation so that each of the four corner portions is pinched over both side surface portions. An inner bag fitting device for a cardboard case package, comprising a bag mouth folding piece 7 to be fitted.