JPH0739761Y2 - Device for preventing top-level paper misalignment of stacked packages - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is used for packaging equipment for flexible articles such as newspapers, and in particular, stacking a plurality of newspapers into a single packaging unit. The present invention relates to a device for preventing upper layer paper misalignment of a packaged object.

(Prior Art) In a packaging machine that wraps newspapers in the required number of copies at the delivery destination,
As shown in FIG. The packaging films a and b are taken out from separate reels onto a conveyor (not shown), and the front ends c thereof are closed by heat welding. When the stacked article to be packaged d is fed between the packaging films a and b, the address paper f of the delivery destination is placed on the upper surface of the uppermost sheet e of the stacked article to be packaged d. Then, the stacking a to be packaged d is compressed by the upward and downward movement of the press g of the flat plate body while the packaging a,
The rear end h of the b was closed by heat welding, and the central part of the rear end h was cut to perform compression packaging.

(Problems to be solved by the invention) However, when the stacked articles to be packaged d are compressed by the press g of the flat plate, the mountain fold portion having the highest stacking height is pressed, so that the address sheet f and the top sheet are stacked. The upper layer paper such as e is subjected to the action of being pushed backward (see the arrow), and a large amount s is generated. This not only makes it difficult to read the destination bar code written on the address paper f, but also has a problem that the packing appearance becomes poor and the corners of the stacked articles d to be packed are easily broken during band binding.

In view of such conventional circumstances, it is an object of the present invention to provide a device for preventing upper-layer paper misalignment of stacked articles to prevent the occurrence of load collapse when stacking and compressing a plurality of newspapers and the like. I am trying.

(Means for Solving the Problem) The device for preventing the upper layer paper misalignment of stacked objects to be packaged according to the present invention is a flat plate body of a main press in which a flat plate body for pressing the upper surface of the stacked package objects is connected to a lifting cylinder. In the center of
At least two groups are provided, each of which is composed of a projecting body provided so as to be able to advance and retract downward from the inside of the flat plate body, and a pressing cylinder connected to the projecting body. Prior to the descending operation, the pressing cylinder is pressed to the central portion of the stacked articles so that the stacked articles are projected from the flat body, and the pressing of the stacked articles is released in the area where the flat body descends. It is characterized in that it is accommodated inside the flat plate body by the pressing cylinder as described above, whereby the above object is achieved.

(Operation) When the stacked articles to be packaged are sent to the packaging machine, the flat plate body of the main press starts the lowering operation by the lowering drive of the lifting cylinder.

On the other hand, the projecting body of the upper layer sheet misalignment preventing device presses the central portion of the stacked packaged objects prior to the descending operation of the flat plate body by the downward driving of the pressing cylinder, and stacks while maintaining the pressed state by the projecting body. The entire upper surface of the packaged object is pressed by the flat plate body.

Then, in the area where the flat body descends, the projecting body is housed inside the flat body, so that the pressing action on the central portion of the stacked packages is released.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 3, the right side is referred to as the front and the left side is referred to as the rear, and the directions orthogonal to the plane of the drawing are referred to as the left and right.

The upper layer sheet misregistration prevention device 1 shown in FIG. 1 is an upper layer of the uppermost sheet (the uppermost newspaper) 3 and the address sheet 4 when compressing and packaging the stacked article 2 in which a plurality of folded newspapers and the like are stacked. It is for preventing the paper 5 from being displaced, and is provided in the main press 6 of the packaging machine (not shown).

That is, in the main press 6, a rectangular flat plate body 8 is connected to an elevating cylinder 7, and two upper layer sheet misalignment prevention devices 1, 1 are provided at the center of the flat plate body 8 at intervals in the left-right direction. Has been. (Only one unit is shown in FIGS. 1 to 3.) Each upper layer sheet misalignment prevention device 1 is a disc provided so as to be able to advance and retreat downward from the inside of the retracted space 9 of the flat plate body 8. The projecting body 10 and the pressing cylinder 11 connected to the projecting body 10. This protrusion 10 presses the pressing cylinder 11 together with the elevating cylinder 7 with a control means such as a sensor so as to press two positions in the central portion of the stacked articles 2 prior to the lowering operation of the flat plate 8. In addition to being made possible, it can be accommodated in each of the retracted spaces 9 of the flat plate body 8 in the end region of the lowering operation of the flat plate body 8. 12
The lifting cylinder 7 is fixed by the frame of the packaging machine. 13, 14 are packaging films supplied from separate reels (not shown), 15 is a conveyor of the packaging machine, and the packaging films 13, 14 are attracted to the upper and lower positions behind the conveyor 15 for heat welding. There are provided sealers 16 and 17 and a cutter (not shown) for cutting the middle portion of the heat-welded films 13 and 14 in the left-right direction.

The upper layer paper misalignment prevention devices 1 may be increased in number to three or more, or the arrangement position may be changed to a staggered shape or the like, if necessary. Further, each protrusion 10 may be formed in a spherical shape or the like.

Next, the operation of the above embodiment will be described.

The packaging films 13 and 14 have their front end portions thermally welded at the end of the previous packaging operation, and stand by behind the conveyor 15.

When the stacked object to be packed 2 that has entered between the packaging films 13 and 14 is sent to the conveyor 15 (see FIG. 1), the second
As shown in the drawing, the lowering drive of the lifting cylinder 7 and the pressing cylinder 11 is simultaneously activated by the detection signal of the control means (not shown). Therefore, each projecting body 10 of the upper layer sheet misalignment prevention device 1 presses two places in the central portion of the stacked packaged object 2 prior to the lowering operation of the flat plate body 8 of the main press 6, and then the stacking is performed by the flat plate body 8. When the entire upper surface of the article to be packaged 2 is pressed, the upper layer paper 5 such as the address paper 3 and the top paper 4 is compressed without shifting.

When the lowering operation of the flat plate 8 further progresses, as shown in FIG.
The ascending drive of 1 is started, and each projecting body 10 is housed in each retracting space 9 of the flat plate 8 in the lowering end region of the flat plate body 8,
The pressing action on the central portion of the stacked articles 2 is released.

Then, the rear ends of the wrapping films 13 and 14 are sealers 16 and 17.
After heat-welding is performed by cutting and the intermediate portion of this heat-welding portion is cut, the stacked articles to be packaged 2 are carried out to the band binding machine in the next step by the forward drive of the conveyor 15.

(Effect of the device) The upper layer paper misalignment preventing device of the present invention for stacking stacked objects is provided at the center of the flat plate body of the main press in which a flat plate body for pressing the upper surface of the stacked packaged products is connected to the lifting cylinder. ,
At least two groups are provided, each of which comprises a projection body that is capable of advancing and retracting downward from the inside of the flat plate body, and a pressing cylinder that is connected to the projection body, and the projection body descends the flat plate body. Prior to the operation, the pressing cylinder presses the central portion of the stacked packages so that the stacked packages are projected from the flat plate, and the pressing of the stacked packages is released in the lower end region of the flat plate. Since it is characterized in that it is accommodated inside the flat body by the pressing cylinder, the uppermost paper such as the uppermost paper and the address paper does not shift during compression packaging. Therefore, not only can the package in which the destination bar code can be easily read but also the packing appearance can be improved, which has the excellent advantage that the corners of the stacked packaged objects can be prevented when the band is bound. is there.

When the flat body presses the stacked articles to be stacked, the projecting body is accommodated in the flat plate body so as to release the pressing of the stacked packaged objects. There is no possibility that the objects to be stacked will be damaged by being pressed strongly.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front view showing an outline of an upper layer sheet misalignment preventing device for stacking packaged articles, and FIGS. 2 and 3 explain the operation of the upper layer paper misalignment preventing device. FIG. 4 is a schematic view showing a conventional example of compression packaging of stacked articles to be packaged. 1 …… Top layer paper slip prevention device 2 …… Stacked objects to be packaged 5 …… Top layer paper 6 …… Main press 7 …… Lifting cylinder 8 …… Plate body 10 …… Projection body 11 …… Pressing cylinder

Claims (1)

[Scope of utility model registration request] 1. At least two base plates are provided at the central portion of a flat plate body of a main press in which flat plate bodies for pressing the upper surface of articles to be stacked are connected to a lifting cylinder. The projecting body is provided so as to be able to move forward and backward from the inside, and the pressing cylinder is connected to the projecting body. It is made to project from the flat plate body by the pressing cylinder so as to be pressed, and is housed inside the flat plate body by the pressing cylinder so as to release the pressing of the stacked packaged objects in the lowering end region of the flat plate body. An upper layer paper misalignment preventing device for stacked articles to be packaged.