Jelly Cup Die Cutting Technology and Troubleshooting (medium)

A. Special Jelly Cup Die Cutter

1. Common die-cut version

The ordinary paper cutting process is a process in which a die cutting board arranged by a die cutter, an indentation steel wire, and the like is pressed and formed under pressure. The production of a die cut (commonly known as row knife) refers to the cutting knife. Indentation of steel wire, sponge strips, etc. in accordance with the requirements of the requirements, the fight on the die-cut version.

2. Jelly Cup Die Cut

The die-cut version of the SLA-230 film sealing machine is made by casting directly on the steel plate. It is resistant to pressures of several tens of tons. It is wear-resistant and has a long life. Normally it only needs to be replaced once a year. It is currently used in China. Most of the products imported from Japan. In order to ensure the appearance of the cup film after die-cutting, the knife edge is often designed as a saw-toothed shape and fixed on the upper die plate. Using a certain punching force, the wound film is pierced and then cut off. Its advantages are low wear, low working pressure and small offset position. The disadvantage is that the trimming edges are uneven and the edges of the blades are prone to nicks, resulting in constant film cuts. The strength of the die cutter is greater than the strength of the die groove, but also has a certain degree of toughness to prevent the blade from breaking after it hits the die groove. The gap between the die cutter and the bottom of the die groove is controlled at 0.05-0.50mm, which can be adjusted according to the diecutting requirements. According to the size of the die-cut version, the price of this cast die-cut version is between 2000 and 3,000 yuan.

Two. Different from the paper jelly cup film material

Jelly cup membrane materials are generally composed of a print layer and a heat seal layer. Achieve the jelly cup film material of SLA-230 film sealing machine (9 brush layer has been printed with a pre-designed pattern; the heat sealing layer is mainly to complete the process of bonding with the cup body under the effect of high temperature. Special high-grade jelly cup The film material consists of 3 layers, namely a print layer, an adhesive layer, and a heat seal layer, so the thickness of the cup film material is relatively large.

Jelly cup membranes require higher hardness to prevent wrinkling and have a certain degree of high temperature resistance. Stiffness is also required to be high in order to ensure complete cutting in the die cutting process and to avoid adhesion. , For the hot and cold drinks cup or bowl cover and other materials can choose: PP. PE. PS, EPS, PSP, PET, PVC, and aluminum foil composites, NYLON are commonly used as cup membranes. PL, PS, PP, aluminum foil, tear film, composite film roll material.

Three. Jelly cup membrane heat sealing, die cutting process points

1. crafting process

After the device is started, a command sent from the PLC controller is passed to the motor, and the motor-driven stencil is stopped after running one stroke. At the same time, the PLC sends instructions to the upper mold plate (including feeding, filling, heat-sealing, and die-cutting), and the feeding, top cup and filling mechanism begin to work, complete the feeding, etc.; the unwinding mechanism of the die-cutter begins to The printed film has been printed and released. The unwinding of the web is the same as the unwinding principle in the printing process. There are also tension control devices and electro-optic scanning. Because the heat-sealing stencil and the die-cutting plate are fixed during the die-cutting process, when there is a deviation between them, The pulse sent by the electric eye is used to adjust the position of the film. When the position is appropriate, the heat-seal film and the die cutter fall, and the heat-sealing and die-cutting processes are completed. Then, the heat-seal film and die cutter are lifted, and the cylinder piston (control stencil up and down movement) rises to the top and then pushes the sensor. At this time, the sensor feeds back the pulse signal to the PLC controller and is controlled by the PLC controller. The beginning of a journey.

2. Cutting speed

The die-cutting speed of the SLA-230 film sealing machine mentioned in this article is 800 times per hour, and multiple cups can be sealed at a time, resulting in high work efficiency. (to be continued)