JPS5824331B2 - Transfer device to square bottom paper bag packaging device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer device that collects folded square-bottomed paper bags into lots in an appropriate number and packages the bags by alternating the top and bottom of the paper bags.

The overlapped square bottom parts of lots of square bottom paper bags are thicker than the other lots, so if each lot is stacked in the same direction and packaged, the shape of the completed package will be unstable or there will be wasted space in the package. .

In order to solve this packaging problem, a method has been proposed in which each lot is stacked by alternating the top and bottom of the paper bags (Japanese Patent Publication No. 52-15039).

According to this, as shown in FIG. 1, the corner bottoms 2 of each lot 1 are alternately located so that the spaces 3 are dispersed to the left and right, making it easy to maintain the shape of the package 4. The bottom part 2 drops into the space 3, allowing the overall height to be reduced considerably.

Its height is approximately n(a+b)/2° (n...the number of stacked lots, a ) b is obvious), where the thickness of the corner bottom 2 is al and other parts are b.

To pack this package, the stacked lots of square bottom bags are pressed by a press. During this pressing, a space 3 is created in the center of the stacked lots, so the pressing force from the press is applied to both ends of the stacked lots. It will cost a lot of money.

When opening the package, the paper bag inside flew out and dispersed.
In addition, since the corner bottom is tightly adhered to the paper packaging main body, it takes effort to raise it to form a bag body.

Therefore, considering this further, if each lot 1 is stacked as shown in Figure 2, the corner bottoms 2 of each lot 1 are stacked alternately and the tops of paper bags do not overlap the corner bottoms 2'.
The space 3 can be further distributed and its overall height can also be further reduced.

In other words, the height when stacked like this is about nb
Since no space is created in the center, the press presses the edges and the center evenly, which prevents the package from dispersing during unpacking and from sticking together at the corner bottoms.

The object of the present invention is to provide a transfer device to a square-bottomed paper bag packaging device capable of packaging as shown in FIG. 2 above.

The present invention will be described below with reference to illustrated embodiments.

In Fig. 3, 6 is a large cylinder and a mechanism 7 is conveyed to the periphery.
and a turning mechanism 8.

The delivery mechanism 7 is arranged at 90' intervals and has cylinders 60
As it rotates, it protrudes and retracts from the cylinder periphery at a predetermined position.

The turning mechanism 8 is disposed adjacent to the delivery mechanism 7 and is also turned 90 degrees at a predetermined position as the cylinder 6 rotates.

However, the directions of rotation are alternately opposite.

10 is a holding mechanism that connects the belt 11 of the bag making machine and the cylinder 6.
It is located in between and sequentially receives each folded square-bottomed paper bag 12 carried from the belt 11 and temporarily stores and holds it.

Reference numeral 13 denotes a pressing transfer mechanism that presses and transfers a lot 14 of square-bottomed paper bags in cooperation with the cylinder 6, and is provided with a chino 15 and a pressing piece 16 that moves together with the cheno.

The pressing piece 16 moves in and out as it rotates, and is pushed out toward the cylinder 6 at a predetermined position.

Reference numeral 17 denotes a transfer mechanism that picks up the lot 14 and sends it to the packaging process.

As schematically shown in FIG. 4, the transfer mechanism 17 includes two chains 18a and 18b, which form two conveyance paths that are driven and rotated in parallel with their positions shifted back and forth.

A guide plate 19 is bridged at regular intervals between the guide plates 18b, and a receiving plate 2 is slidably fitted to the guide plate 19 and stands side by side on the upper surface.
0 and a slider 22 serving as a square-bottom paper bag receiving body provided with a follower 21 on the lower surface, and a separating cam body 23 and a converging cam body 24 that guide the follower 21 toward the cylinder 6 side.

Guide plate 19, slider 22, and chain 18a
, 18b is shown in FIG.

FIG. 6 particularly shows the relationship between the follower 21 of the slider 22 and the cam groove bodies 23, 24, and the follower 21 is provided with a roller 25 at its engagement portion.

The chains 18 a s 18 b are prevented from swinging vertically and horizontally by a regulating plate 26 provided on the machine frame.

The separation cam body 23 is connected to the chain 18 as shown in FIG.
Two cam grooves 27 and 28 are provided, which are close to each other on the front side in the direction of movement of the cam grooves 27 and 18b, and take symmetrical paths that are gradually spaced apart from each other toward the front and become parallel at the front end.

The converging cam body 24 has a cam groove 29 similar to the separating cam body 23.
．． 30 or just a chain 18a as shown in FIG.
, 18b, the front side thereof is parallel to the traveling direction of the objects.

The distance between the parallel parts is the corner bottom width t of the paper bag (second
(Figure).

The follower members 21 provided on the lower surface of the slider 22 are arranged one after another, as shown in FIG. 9, so that the cam grooves 29 and 30 which are adjacent to each other are shifted by an interval t'.

That is, the transfer mechanism 17 has two conveyor paths each consisting of two chains 18a and 1sb, whose spacing at the take-out position is wider than that at the receiving position by a distance approximately equal to the width t of the corner bottom 2' of the paper bag. and a square-bottomed paper bag receiving body consisting of a slider 22 having receiving plates 20 arranged in parallel on the upper surface and a follower 21 on the lower surface, which are alternately provided on each conveying path along the conveying path.

The chains 18a and 18b are synchronized with the rotation of the large cylinder 6 and move intermittently or continuously so that the slider 22 is positioned directly below the rotating mechanism 14 by 1/4 rotation, that is, when the rotating mechanism 14 is in the horizontal position.

To explain the operation of this device, first, the belt 11 of the bag making machine
Each folded square bottom paper bag 12 is vertically dropped into the holding mechanism 10.

When one lot of 140 paper bags is accumulated in the holding mechanism 10, the carry-out mechanism 7 rotates to scoop, grip, and take out the paper bags from the holding mechanism 10.

At this time, the rod 14 is riding on the turning mechanism 8 which has rotated together.

When the turning mechanism 8 reaches the top of the cylinder 6, the suppression piece 16
is pushed down to press the lot 14 onto the turning mechanism 8, and at the same time the carrying mechanism 7 is released.

Then, the turning mechanism 8 is rotated approximately 900 times in one direction, and the lot 1
4 is placed horizontally.

Note that the next pivoting mechanism 8 is rotated 90' to the other side, and the lot 14 is turned sideways with the corner bottom position opposite to that of the previous one.

Thereafter, the pressing piece 16, the rotation mechanism 8 rotates in the same manner as the cylinder 6, and when the pressing piece 16 reaches the horizontal position, the pressing piece 16
The pressure is released, and each lot 14 falls individually between the receiving plates 20 of the slider 22, which is a receiving and packaging process transfer mechanism.

At this point, the paper bags in each lot 14 are alternately turned upside down, but all within the same width.

As the slider 22 advances, its follower 21 engages with one of the cam grooves 27 and 28 of the spaced cam body 23, and eventually moves the slider 22 outward by 1/2 t.
-/'e Move alternately.

In other words, the lots 14 whose corner bottoms are alternately reversed are further rotated 1/2 outward to the left and right across the transport direction for each lot.
The two adjacent lots 14 are shifted by 2t, and one of the two adjacent lots 14 is shifted by the width t of the base.

Therefore, if they are moved as they are, collected at the other end of the transfer mechanism 17, and packaged, a package as shown in FIG. 2 is completed.

The slider 22 that released the lot 14 enters the w process,
When the cylinder side of the transfer mechanism 17 is reached, the converging cam body 24 and the follower 21 engage, and the one that had been deflected outward by 1/2t converges to the center, and the distance t from the next slider is reduced. It is released and reaches the position where the lot is received again.

Since the followers 21 of the slider 22 are arranged to be alternately shifted by l, even if the position for receiving the lot is reached again, the direction of movement to the left and right will not be confused.

As described above, in the package formed according to the present invention, since the lots are stacked with the corner bottoms alternately reversed and the upper ends of paper bags are stacked on the corner bottoms without overlapping, the loft is such that the corner bottoms are alternately reversed. Compared to a case where the upper part of the paper bag of the upper lot overlaps the corner bottom of the lower lot, the height can be further reduced and the form of the package is more stable.

In addition, there are effects such as automatic stacking of lots.

Furthermore, the package formed according to the present invention has a lot of stacked square-bottomed paper bags having no space in the center thereof;
Since both ends and the center of the stacked body have approximately the same thickness, the press during packaging acts evenly on the center and both ends of the paper bag, so that only the ends are not pressed too hard. Therefore, the paper bag does not fly out and scatter during unpacking, and the corner bottom of the paper bag can be opened easily.

The specific structure of the holding mechanism 10, the carrying mechanism 7, the turning mechanism 8, the suppressing transfer mechanism 13, etc. is described in the aforementioned Japanese Patent Publication No. 52-15
The one described in No. 039 can be adopted.

[Brief explanation of drawings]

FIG. 1 is a conventional square-bottom paper bag package, FIG. 2 is a perspective view of a square-bottom paper bag package packaged by the apparatus of the present invention, FIG. 3 is a front view of an embodiment of the present invention, and FIG. 5 is a plan view of the main parts of the above, FIG. 6 is a side view of a part of the main parts of the above, and FIGS. 7 and 8 are a diagram showing the separation and convergence of the above. A plan view of the cam body, FIG. 9 is a plan view schematically showing the operation. 7... Carrying mechanism, 8... Rotating mechanism, 10...
Holding mechanism, 13... Repression transfer mechanism, 17... Transfer mechanism, 19... Guide plate, 20... Receiving plate, 21...
Follower, 22... Slider, 23... Separating cam body, 24... Converging cam body.

Claims (1)

[Claims] 1. A holding mechanism that temporarily stores the square-bottomed paper bags that are folded and sent one by one, and a holding mechanism that scoops out the square-bottomed paper bags one by one when a certain number of lots are collected in the holding mechanism. a mechanism installed in a large cylinder for carrying out a lot of bags, a mechanism for holding each carried out bag lot and sequentially and alternately rotating it by 90 degrees in opposite directions after the carrying mechanism is released; Each lot of bags is alternately rotated in opposite directions and placed in a horizontal position,
In a transfer device to a square-bottomed paper bag packaging device comprising a mechanism for transferring to the packaging process, the mechanism for transferring to the packaging process is arranged such that the interval at the take-out position is approximately equal to the width of the square bottom of the paper bag compared to the interval at the receiving position. A transfer device for a square-bottomed paper bag packaging device, characterized by comprising two widened conveyance paths and square-bottomed paper bag receivers provided alternately in each conveyance path along the conveyance path.