I believe that flat die-cutting is well known in most industries of the mold cutting industry, while circular die-cutting is also quite cost-effective. Compared with circular die-cutting, the processing difficulty is greater, and the corresponding process flow has also undergone significant changes.
Some enterprises have not been widely applied. Today, the editor of Shijiazhuang Xiaoniu Technology has provided a summary of the knowledge of circular cutting machines for everyone's reference. We have summarized the equipment selection, daily operation, maintenance, and common problem solutions.
Equipment selection for round knife die-cutting machine
How to make a good selection of die-cutting machine equipment. At present, the production technology of domestic circular die cutting machines is very mature and stable, and some enterprises can manufacture them without the need to choose foreign products. When selecting, enterprises should pay attention to three indicators: width, mechanical speed, and working position.
1. Width
When selecting the width, it must match the auxiliary machine model and product. The principle of the circular die cutting machine is that the upper shaft blade separates the paper from the lower shaft roller, and requires the thickness of the die-cutting blade roller to be appropriate. That is to say, the circular direction of the mold tool should not have fewer or more layouts.
The die-cutting roller is too thin, and during use, the roller at the shaft end can cause deformation of the die-cutting roller, resulting in the inability to cut in the middle; The die-cutting blade roller is too thick, which will increase manufacturing costs and is not economical.
2. Mechanical speed
In the selection of mechanical speed, 150 m/min is generally chosen, which is the optimal economic speed for tool and equipment wear.
3. Job selection
In the past, when choosing a work position, three types of work positions were generally chosen. If there were special products, a four station die-cutting machine could also be selected. Nowadays, most electronic die-cutting machines use circular cutting machines with 10, 12, 15 or more workstations.
Common problem solutions and maintenance
In order for some circular die cutting machine enterprises to make the die-cutting machine play an effective role, it is necessary for the equipment manufacturing enterprises to provide training for operators and tool adjusters, and solve common problems.
The main content is as follows: (1) Prepare a sponge rebound rubber strip with a thickness of 2.5mm and gaskets of different thickness specifications, read more instructions, and use the principles of mechanical transmission and circular die-cutting. Due to the gap between the upper blade and the lower roller of the circular die cutting machine being only 0003 × 0008 mm, the gap is too large to produce burrs or cut open, and the gap is too small, which can easily crush the cutting edge of the mold. If the gap is too large, the shaft end roller should be moved to reduce the gap between the upper and lower tool rollers (the current tool rollers have tapered rollers at the shaft end to adjust the gap between the upper and lower blade rollers), in order to achieve the ideal gap state.
(2) The blades have wear and tear in each shift, and each transfer level should carefully inspect the wear of the blades, waste needles, waste shovels, etc. of the mold cutting rollers. If there is local wear, a cushioned high blade block can be used to solve this problem.
(3) When starting, pay attention to observing the production situation of the die-cutting machine and maintain good records.
