Carton printing slotting machine on the life of the blade – printing, slot machines, blade – the printing industry
Carton Printing slotting machine Molding machine and a variety of Print Slotting die-cutting machine and other multi-joint. With high-quality higher education, and compact structure, is carton Package Enterprises in general use. Slotting cutter is one of the necessary tools, which directly affects the life quality and manufacturing cost slotting carton is similar Quality Management And cost management challenges in need of improvement.
In today's market quality and price competition as the core, this issue has been more and more business leaders are concerned about, tapping the potential to promote business innovation, efficiency savings, take the intensive development path. This slot knife to enhance some of life issues.
1, problems at home and abroad slot knife, its structure similar to the shape.
Slotting cutter, including the knife and the knife in two parts. Common on the knife with curved blade, curved serrated knife two; under the knife has semi-circular or semi-circular right angle acute angle knife blade, file semi-circular groove width ring. Shown in Figure 1. Slotting slotting cutter quality of life depends on whether the board product standards. Slot with the tool edge is the quality of general wear and decreased produce flash, burrs, fragmentation and waste related phenomena. When the product does not meet the standard, slotted knife on the need to exchange.
Imported and domestic life on the slotted knife despite of some differences, but there are some problems similar: one slot knife (the knife) only a one-time use, life expectancy was short; second knife again with the effects of poor quality and unstable slot; third, less edge wear, some edge cracking phenomenon of local produce; fourth, frequently purchase new knives, big spending, higher production costs.
Second, the main reasons of (A) of the tool wear and being cut paper work of the slotting cutter, foot mouth of the cardboard produced while cutting exercise. Surface by the relative friction. Many board in the high sand content above 5% ~ l0%, sand relative to the grinding edge scraping lieutenant strong role, so that the metal edge surface plastic deformation and fatigue gradually wear off. Tool life increased with the use of time by cutting cardboard and sand content (silica sand, etc.) and impurities rise decreased.
(B) after sharpening gap between upper and lower knives unreasonable, and then affect the product quality.
1 form and extent of the upper and lower tool wear. Shown in Figure 2. Since the edge on the knife face a range of more than 10mm or so obvious wear, face b's Department has some edge wear, two dull blade acute angle, between the two a face thinner; face c from the edge under the knife Following is the range of about 10mm has obviously worn face d of the edge has some wear Department, acute angle knife blade knife or blunt, c surface edge to the corresponding office between the thickness of the thin end. Lead to the upper and lower edge wear
2 gap between the change in population. Usually people focus on the face than a, c of the grinding, but the gap thus caused changes of less analysis.
3 ignores the thickness of the corresponding ring groove width changes. After slotting cutter grinding with poor prognosis. This is due to the thickness of a fixed ring groove width, gap between upper and lower blade mouth unreasonable reason.
(C) tool wear resistance and hardness of the material and heat treatment and hardness and wear resistance of hard tissues of particle nature, number, size and distribution are such relations, higher hardness, carbide refinement The more, the more uniform distribution, better wear resistance.
Three ways to improve life on this refer to some objective factors or tool is difficult to avoid accidental bumps as affected by life, not addressed in this. We passed the subjective practical way to solve the old knife and then used the issue of new knives, thus extending the life of knife slot.
(A) a reasonable allocation of the old knife grinding gap and ensure the re-use effect.
1. On the old classification of the grinding tool wear measurement. In order to unify the size standard grinding, edge grinding to reduce unnecessary loss of volume, the knives all the old measurement, recording, classification of grinding.
2. On the knife's edge inspection, classification. Grinding. Where d a crack surface defects such as edge grinding d surface to defect polished up; where d face no obvious defects such as cracking, all grinding c surface. To c surface wear surface polished up.
(B) the preferred material, high hardness
1, to prevent abnormal edge cracks. After forging steel tools to achieve the required shape, but also became close to the internal organization, quality improvement phase, but requires the forging process to avoid forging cracks. Full account of the process of heat treatment to avoid the quenching crack.
2. Acquire a new tool in strict accordance with plan acceptance. Carton packaging enterprises generally acquired through outsourcing agreements outside the new slot knife, need attention are: drawings must be in accordance with the provisions of the dimensional tolerances, material, hardness, demanding acceptance.
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