CN115360016B

CN115360016B - MLCC water system manufacturing process lamination process

Info

Publication number: CN115360016B
Application number: CN202211111636.4A
Authority: CN
Inventors: 顾孝冬; 吴敏; 尹玉民
Original assignee: Yageo Corp
Current assignee: Yageo Corp
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-10-13
Anticipated expiration: 2042-09-13
Also published as: CN115360016A

Abstract

The invention discloses a pressing technology for an MLCC water system manufacturing process, which comprises the following steps: a. lamination: laminating the printed dielectric films one by one until the printed dielectric films are laminated to a preset layer number; b. and (3) blanking: placing the materials after lamination into a preset position between an upper mold core and a lower mold core of the lamination equipment; c. pressing: pressing the materials, and maintaining the pressure for a certain time under the action of corresponding pressing force; d. cutting: in the step c, after the material is kept at a high pressure for 0-6 s, cutting four sides of the material by a cutter in the laminating equipment; e. after cutting, the cutter is kept at the side part of the material for 1 s-5 s, the upper mold core and the lower mold core continuously give high pressure to the material, the pressure is kept for 1 s-5 s, then the cutter moves upwards to return, and then the upper mold core moves upwards to release the pressure keeping to the material, so that the pressing procedure is completed. The invention improves and reduces burrs, improves the subsequent cutting stability and improves the product qualification rate.

Description

MLCC water system manufacturing process lamination process

Technical Field

The invention relates to an MLCC, in particular to an MLCC water system manufacturing process lamination process.

Background

In the MLCC production and manufacturing process, water system lamination is a key step. In the conventional lamination process, after the laminated materials are put into lamination equipment, two sides of the laminated materials are cut by a cutter, and then lamination is performed. However, the above-described process has the following disadvantages:

(1) edge cutting is carried out after lamination, the volume of materials is reduced in the subsequent high-pressure pressing process, cutting positioning mark points on the side surfaces of the materials (positioning mark points in the subsequent cutting process) are blurred and displaced, the cutting positioning is inaccurate in the subsequent cutting process, the size of a cut product is poor, the qualification rate is reduced, or the cut product is sometimes required to be manually subjected to point-to-point, the labor intensity of operators is high, and the production efficiency is low;

(2) after the edges of the materials are cut, pressing is carried out, the cutter is not lifted to separate from the materials temporarily in the pressing process, and the edges of the materials are limited, so that in the pressing process, the change of the volume of the materials can give larger pressure to the side edges of the cutter, the gap between the cutter and the mold core of pressing equipment can be enlarged, the burrs of the subsequent materials can be increased and enlarged, and the internal stress of the edges of the materials is enlarged, so that the influence on the subsequent cutting process is larger, and defective products are caused in the cutting in the subsequent cutting process; or the phenomena of material side cracking, chip pressing, non-guiding and fracture occur, so that the defective rate is higher;

disclosure of Invention

The invention aims to provide an MLCC water system manufacturing process lamination process, by using the process, the definition and the precision of material cutting mark positioning points are improved, the burr problem after material lamination is reduced, burrs can be effectively controlled, and the qualification rate of products is improved.

In order to achieve the above purpose, the invention adopts the following technical scheme: an MLCC water system process lamination process comprises the following steps:

a. lamination: laminating the printed dielectric films one by one until the printed dielectric films are laminated to a preset layer number;

b. and (3) blanking: placing the materials after lamination into a preset position between an upper mold core and a lower mold core of the lamination equipment;

c. pressing: pressing the materials, and maintaining the pressure for a certain time under the action of corresponding pressing force;

d. cutting: in the step c, after the material is kept at a high pressure for 0-6 s, cutting four sides of the material by a cutter in the laminating equipment;

e. after cutting, the cutter is kept at the side part of the material for 1 s-5 s, the upper mold core and the lower mold core continuously give high pressure to the material, the pressure is kept for 1 s-5 s, then the cutter moves upwards to return, and then the upper mold core moves upwards to release the pressure keeping to the material, so that the pressing procedure is completed.

In the technical scheme, the cutters are arranged in a plurality of groups and are respectively arranged at the outer side of the upper mold core.

In the above technical solution, in the step c, the dwell time of the material is 6s to 15s.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. in the pressure maintaining process of pressing, the edge of the material is cut, so that burrs can be effectively controlled, the phenomena of burrs and scraps can be reduced, the phenomena of side cracking, non-conduction and breakage of the material in the subsequent cutting process can be prevented, the reject ratio of the product can be reduced, and the qualification rate can be improved;

2. the edge cutting is carried out in the pressing process, so that the definition and the precision of the cutting marking locating points of the material can be ensured, the cutting precision and the cutting efficiency in the subsequent cutting process are ensured, the manual point-to-point operation is not needed, the cutting efficiency is improved, and the labor intensity of operators is reduced;

3. the contact time and displacement change of the side edges of the material and the side faces of the cutters in the pressing process are effectively shortened, the gap between the cutters and the upper mold cores and the gap between the cutters and the lower mold cores are enlarged due to the extrusion of the cutters, burrs of the edges of the material are reduced, meanwhile, the contact time of the cutters to the side edges of the material is reduced, the internal stress of the edges of the material can be relieved, the occurrence of side cracking, non-guiding and breakage phenomena in the subsequent cutting process is reduced, and the qualification rate of products is improved.

Detailed Description

The invention is further described below with reference to examples:

embodiment one: an MLCC water system process lamination process comprises the following steps:

e. after cutting, the cutter is kept at the side part of the material for 1 s-5 s, the upper mold core and the lower mold core continuously apply high pressure to the material, the pressure is kept for 1 s-5 s, then the cutter moves upwards to return, after the cutter returns, the limit on the side part of the material is released, after the cutter returns first, the upper mold core moves upwards to the position again, the pressure is kept for the material, and the pressing procedure is completed.

The cutters are arranged on the outer sides of the upper mold cores respectively. In the embodiment, the cutters are 4 groups and are respectively arranged at the front, rear, left and right sides of the upper mold core and used for cutting redundant edges of materials, so that when the subsequent materials are cut in the cutting process, the cutting marking positioning points are clear and have good precision, the subsequent cutting efficiency is improved, and the cutting precision is ensured.

In the step c, the dwell time of the material is 6 s-15 s.

According to the invention, after laminating materials to a certain degree, the cutter is used for cutting the edges of the materials, the materials are kept for a period of time, the time for shrinkage of the materials is given, and then the cutter is separated from the edges of the materials, so that the contact time between the sides of the materials and the sides of the cutter can be shortened in the laminating process, the internal stress of the edges of the materials can be relieved, and after the internal stress of the materials is relieved, the occurrence of side cracking, chip pressing, non-conduction and fracture phenomena of the materials can be reduced in the subsequent cutting process, the qualification rate of the products can be effectively improved, and the defective rate is reduced. For the equipment, the development time of the gap between the upper mold core and the lower mold core and the cutter is effectively relieved, the time is prolonged, and the maintenance frequency is effectively reduced. Meanwhile, the gap between the cutter and the upper and lower mold cores is smaller or basically unchanged, so that the phenomenon of burrs caused by the fact that the distance between the cutter and the mold cores is increased can be reduced, burrs are reduced, and the burrs are smaller.

Meanwhile, the cutting and maintaining are carried out after the pressing is carried out for a period of time, the change of the cutting and marking locating points after the material cutting can be reduced, the definition and the precision of the material cutting and marking locating points are guaranteed, the cutting precision is high in the subsequent cutting process, the cutting quality is good, the qualification rate of products can be guaranteed, meanwhile, the manual alignment is not required because the cutting and marking locating points are unclear and the precision is not high, the labor intensity of operators can be reduced, the manual alignment time is shortened, the cutting efficiency is improved, and the production cost is reduced.

In this embodiment, different pressing forces, dwell times and cutting times after dwell are selected according to different products, materials and processing technologies, so as to adapt to the products of different materials and technologies.

Claims

1. An MLCC water system process lamination process comprises the following steps:

2. The MLCC water system process pressing process of claim 1, wherein: the cutters are arranged at the outer sides of the upper mold cores respectively in a plurality of groups.

3. The MLCC water system process pressing process of claim 1, wherein: in the step c, the dwell time of the material is 6 s-15 s.