With the continuous development of the printing, packaging and trademarks industries, die-cutting technology is also continuously improving and adapting. The scope of die-cutting products involves cartons, carton packaging, trademark labels, plastic packaging, and electronics, light industry, and decoration. And many other industries. In recent years, the domestic carton packaging enterprises and the use of die-cutting machines have become more frequent. To ensure the quality of die-cutting boards, it is a prerequisite for ensuring the quality of die-cutting.

Prior to the 1980s, our country's flat die-cutting and die-cutting plates had been stuck in the production of die-cutting plates by the lead-row cutter method. Not only did workers have high labor intensity, but their accuracy was not guaranteed. After the 1980s, China introduced the internationally advanced plywood array die cutting process. Through nearly 20 years of national reform and opening up and the rapid development of national economy and technology, the ancient platemaking industry has basically been eliminated in China. However, the popularization of correct and reasonable processes for the production of flat-press die-cutting plywood is still incomplete, and new processes, new technologies, new materials, and new equipment are still emerging. The following is the case for China's current flat die-cutting plate-making process. Processes, equipment, raw materials, and common problems in production are discussed and discussed with colleagues.

Die-cut production is divided into two parts: knife template production and template production. The knife template is composed of template, die cutter, indentation line and die-cut tape. The bottom-plate is composed of bottom plate and indentation bottom mold.

The production process of the knife template is carried out according to the following steps:

Draw die cuts → Cut template → Insert die cutters and indentation lines → Open connection points → Paste the strips → Test pad → Make indentation bottom template → Test die cut sample production

First, drawing die cutting

The die-cut diagram is a full-size carton development after the printing process, and is the first key link in the production of a die-cut version. In the process of printing plate making, if full-page imposition is used, direct output of the die-cutting pattern in the printing plate-making process can effectively ensure that the printing plate and the die-cut plate have uniform standards. In the carton printing process, if a manual film is used for imposition, the die cutting process needs to draw a cutout according to the actual size of the layout. In the process of drawing the die cut diagram, the location of the die cutter and the location of the indentation line should be clearly marked according to the international carton drawing standard. In order to ensure that the die-cut version does not disperse in the plate-making process, it is necessary to leave more than two places in the large-area closed graphic part to avoid sawing and breaking. This position is usually called bridge, and the width of the bridge can be designed as 3mm-6mm for the small plate version. 8mm to 9mm can be left for large plates.

Second, the cutting template

The materials used in the stencil are wood multilayer plywood, high density board, and electric board, etc. Currently, the wood multilayer plywood is widely used, the thickness of the wooden multi-layer plywood is about 18 millimeters, and the hardwood plywood has a higher durability.

Cutting stencils vary according to the cutting method. They include sawing stencils and laser cutting stencils.

Saw cutting is currently the main processing method for stencil seams. The work of the sawing machine is to use the up and down reciprocating motion of the saw blade to process the narrow slits for the die cutters and indentation lines on the stencil with a special ultra-narrow saw blade. The saw blade is 3. Omm's saw blades and saws are equipped with electric drills, which can be drilled on the stencil. After drilling, holes can be cut through the holes on the plate. Today's sawing machine series products have different specifications and functions, depending on the occasion and plate type. The sawing machine is equipped with a dust collection system to automatically collect sawn sawdust. The saw blade can be electrically clamped. The work surface of the sawing machine is equipped with an air-float system, which can make the large-format sawing easy and flexible.

The laser-cutting die-cut version is carried out on a computer-controlled laser cutting machine. It uses a laser as an energy source to cut a template material by a laser-generated high temperature. The laser cutting first needs to input the full-page die cut diagram into the computer, and the computer controls the die cut plate to cut relative to the movement of the laser head. Laser cutting is controlled by computer. The cutting accuracy of die-cutting plate is very high, but there are many factors that affect the cutting quality in the cutting process, such as the quality parameters of the material, the thickness of the plate, the output power of the laser, the type and pressure of the auxiliary gas, The diameter of the nozzle, the diameter, the distance between the material and the nozzle, the focal length of the lens, the position of the focal point, and the cutting speed. In actual production, it is extremely important to draw lessons from past experience to determine the effectiveness of oral hygiene. The main disadvantage of laser cutting is that laser cutting machines are expensive and cutting costs are high. It is impossible to purchase laser cutting machines independently. They can only be found by professional manufacturers, and the price of laser cutting die cutting plates is higher. It is expected that laser cutting molds will be expensive. Cutting plates and sawing die cutting plates will complement each other and develop and improve together. (to be continued)