JPS6022027Y2 - Automatic box making machine delivery - Google Patents

Description

[Detailed description of the invention] This invention is an automatic box making machine that produces boxes by folding and gluing paperboard punched into a predetermined shape (hereinafter referred to as carton blank). This invention relates to a delivery system (also called a trompon) for partially stacking sequentially transported carton blanks and guiding them to a stacker having a pressure belt or roll.

Many of the carton blanks that have been folded and glued using automatic box-forming machines have complex polygonal shapes, and the folded parts of the carton blanks do not fit perfectly and stand out. Since the thickness is not uniform between the parts with folds and the parts without folds, it is not possible to use a type that stacks sheets vertically at high speed, which is widely used in sheet-fed printing machines and other devices.

Therefore, in general, carton blanks that are being folded and glued one by one at high speed are placed at a level with a difference in level from the advancing level, and are moving at a considerably slower speed than the advancing speed. By allowing the carton blanks to fall freely onto the transfer belt, the carton blanks are partially piled up and transferred, and the crimping belt provided at the top ensures complete adhesion at the glued area, and after passing through the crimping area, the carton blanks are further transferred to the lower belt. In many cases, the carton blanks moving above are manually picked up at regular intervals.

The present invention provides an improved delivery for the stacker of an automatic box making machine of the above type to conveniently introduce carton blanks, which have been folded and pasted and are sequentially transferred at high speed, into the stacker. In particular, the shape of the folded carton blank is
Suitable for those shown in the figure.

Embodiments will be described below with reference to the drawings showing embodiments.

The figure is a side view of the main part of the device showing one embodiment,
Part of the folding or gluing device A is shown on the right, and the stacker B is shown on the left, with the carton blank progressing from the right to the left in the figure.

A carton blank guide section sent from the folding device section A side, an effective transfer section of the lower endless belt 1 that rotates and is stretched across the belt guide rollers 5 to 11 and the drive roller 8, and a belt stretched around the belt guide rollers 14 to 19. It is held by the effective transfer portion of the rotating endless upper belt 2 and transferred in the direction of the arrow.

Although not shown, another carton blank transfer means, which is a pair of the lower endless belt 1 and the upper endless belt 2, is provided in parallel with the illustrated carton blank transfer means, and the Kanaton blank Ca The carton blangs are transported while being held at appropriate positions by these two pairs of carton blangu transport means.

The two pairs of carton blank transfer means can be individually adjusted in a direction perpendicular to the traveling direction of the carton blank, and can be adjusted depending on the size and type of carton.

In the figure, the carton blank Ca is forcibly transferred only during the effective transfer distance L1 of the lower endless belt 1, but after the rear end of the carton blank passes the guide roller 5 of the lower belt, the carton blank is released from the forced transfer and is placed in the stacker. While the transfer is started by the belt 20 of section B, it is in a state of free movement, and falls freely while moving forward due to the inertial force caused by the forced transfer in the previous process.

At this time, the leading edge of the carton blank that first advances hits the carton blank guide section 30 of the belt 2 running between the belt guide rollers 16 and 17 and is guided diagonally downward onto the lower belt 21 of the stacker B. Fall.

At this time, the tip of the rear end of the carton blank is the belt 21.
Before falling upward, the carton blank moves while coming into contact with rotatable rotating rollers 4 provided at a position slightly forward and below the front end of the lower endless belt 1 of the carton blank transfer means.

When the leading end of the first carton blank is in contact with the lower belt 21 of the stacker B and its rear end is supported by the rotating rollers 4 and is in an oblique state, when the next carton blank is sent to the transfer means, the As shown in FIG. 1, the leading edge of the next carton blank comes into contact with the lower surface of the previous carton blank, moves downward, and enters between it and the rotating roller 4.

Similarly, carton blanks transferred later are sequentially arranged under the previous carton blank, which is called a bottom stack.

The rows of carton blanks aligned in this way are slowly transferred to the left by the stacker lower belt 21, the inclination of which is reduced, and the rows of carton blanks are introduced to the underside of the upper belt 24 while becoming almost horizontal, and the glued portion is completely removed. is glued to.

The bottom-stacked carton blanks have the effect that the carton blanks overlap with the lower side of the previous carton blank while being shifted from each other, so that the carton blanks enter the lower side of the stacker upper belt 24 extremely smoothly, and the folded carton blanks also overlap. When the carton blank has a shape as shown in FIG. 2, there is a risk that the tip of the following carton blank may enter inside the folding flap 31 depending on the overstack delivery method in which the carton blank is partially stacked on top of the carton blank. , there is no such fear with the bottom stack method.

The rotating rollers 4 have the function of bottom stacking the rows of carton blanks introduced into the stacker B as described above, and are installed by fixing the stays 3 to the machine frame on which the lower endless belt 1 of the carton blank transfer means is mounted. It is pivoted to the tip of the blade so that it rotates very lightly.

Therefore, the carton blank is not damaged by the rotating rollers 4.

Since there are two pairs of carton blank transfer means, it is desirable to provide two rotating rollers 4 so that depending on the shape of the carton blank, only one can be activated and the other can be deactivated.

[Brief explanation of the drawing]

FIG. 1 is a side view of the main parts of a device showing an embodiment of the present invention;
FIG. 2 is a diagram showing the planar shape of a folded carton blank. In the figure, 1 is a lower endless belt, 2 is an upper endless belt, 3 is a stay for installing rollers 4, 4 is a freely rotatable rotating roller,
5 to 11 are guide rollers of the lower endless belt 1 14 to 2
0 indicates a guide roller of the upper endless belt 2, and Ca indicates a carton blank.

Claims (1)

[Scope of utility model registration request] Transport of carton blanks The transport of carton blanks consists of a lower endless belt 1 with a variable effective length and an upper endless belt 2 with a constant effective length for transporting carton blanks, which is provided in parallel above and in contact with the lower endless belt 1. Delivery of an automatic box making machine equipped with two pairs of means, each of which can be individually adjusted in the direction perpendicular to the direction of transport of the carton blank.
In the figure, it is noted that a freely rotatable roller 4 is pivoted to the tip of a stay 3 provided at a position slightly below the front end of the lower belt 1 of the carton blank transfer means, protruding from the machine frame for mounting the lower endless belt 1. Delivery-0 of an automatic box making machine that enables bottom stacking and introduction of carton blanks into stackers without causing scratches.