Flat-knob boxed version of KFC fries box

The KFC fries box is a kind of shaped carton with a long bottom and a circular arc after being folded in an isosceles trapezoidal shape. Its unfolded flat box material shape is shown in FIG. 1. The folded box material shape is shown in FIG. 2 shows. From the virtual midline of box material, this is a balanced box type. For the 24 fold (in accordance with conventional paste box technology) is undoubtedly a challenge. At this time the need to introduce special origami accessories, the following according to the general plane folder gluer hardware to perform the KFC fries box loading operation process.

1, knife technology. Three blade belts are generally used, one at the virtual midline and two at the knife gate. The longer part of the box material and the larger area are at the front end of the knife door. Only a short part and a small area are located between the rear end of the knife door and the feet. Due to the integrity of the box material and the shorter distance between the knife door and the support legs, the knife support legs should not be too high. The height of the support legs should be flat with the box material. The box material should be focused on the bottom end of the knife door. Strive to make the box material placed comfortably and fully contact with the knife door belt, supplemented with vibration, so as to ensure the continuous downward movement of the box material and stable discharge.

2. After the box material leaves the knife door, it enters one or three pre-folded belt sections. This is different from the traditional box shape in that only the first-line belt is left, and the three-line belt is let go. The position of the single belt is exactly in the box material. On the center line, the two sides are supported by supporting rods. At the end of one or three pre-folded belt sections, folding aids are installed so that they can cooperate with the supporting rods to safely enter the bottom-locked belt section. The shape of the box after full pre-folding is shown in Figure 3.

3, due to the special nature of the kind of box material, the lock bottom can only use the blow type, and before the gluing can either adopt a simple spray glue, can also be used on the plastic wheel and spray adhesive combination, glue location As shown in Figure 3. Folding locks also use special accessories. The above blowing board has three functions: guiding, obstructing, and crimping. In short, its essence is a kind of volleyball track. It cooperates with the blowing device installed under the machine to complete the beautiful and agile folding box process. The installation position is at the junction between the lock-bottom belt section and the second-fourth belt section. The force point and the force route of the air blowing device on the box material and the angle of the air blowing are the subtle techniques based on the feeling. The direction of the guide, the angle of folding, and the strength of the depression are also subtle techniques based on feeling. To be familiar with them, must be repeated practice, combined with the stiffness of the box and the temperature of the paper, silk direction, and the level of quality of the model blunt line.

4. In the case of high-speed flat-gluing machine, the box material is about to leave the belt at the bottom of the lock, and it is basically formed at the instant of entering the second and fourth belt sections. For this special box type, the so-called two-four molding has basically lost its significance. In the second-fourth belt section, the box material is only a preliminary adhesive bonding, and the box material that is not yet sticky and is easy to tilt, and we add a pressing auxiliary to it to ensure that the box material enters the sheet feeding stably. Belt section.

5, because the basic shape of the box is an isosceles trapezoidal flat plate, so the appropriate adjustment of the distance between the kick device and the box material, the key to the paper feed belt segment, kicking the paper position and kick out the length of most need After repeated tests, it can be just right. In addition, it is necessary to take into account the fact that the reading eye cannot count without readings or read doubles when counting.

6. After the box is formed, the longer tongue box is located on the upper part of the plane folding box, which is very conducive to the operation of the delivery. Whether it is a docking-type flat delivery technology or a point delivery technology, it can be used. .

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