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Method for gluing flexible circuit board enhancing steel strip

A technology of flexible circuit boards and reinforced steel strips, which is applied in the direction of printed circuits, printed circuit manufacturing, electrical components, etc., can solve the problems of low processing efficiency, inability to bond, and pollute steel strips, so as to reduce the loss of heat transfer and fabric The effect of improving the glue efficiency and preventing the steel belt from overheating

Active Publication Date: 2018-01-30
SHENZHEN HUALIN CIRCUIT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the adhesives used for bonding steel strips and flexible circuit boards are thermosetting adhesives, which have low initial viscosity at normal temperature and normal conditions, and must be heated and pressurized to stick tightly, because it needs to be pressed twice, and the first pre-treatment is not necessary. The temperature control of pressing is strict. If the temperature is too high, the thermosetting adhesive will be cured at high temperature and cannot be bonded for the second time. If the temperature is too low, the bonding will not be firm, and the glue will easily fall off after punching, which will affect the product quality.
In the prior art, there are also some methods of distributing glue on the steel belt, but there are various problems such as low processing efficiency, high energy consumption, pollution of the steel belt, and low yield rate, such as the passage of glue on the steel belt. The speed is about 1.5-2m / min, etc.

Method used

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  • Method for gluing flexible circuit board enhancing steel strip
  • Method for gluing flexible circuit board enhancing steel strip
  • Method for gluing flexible circuit board enhancing steel strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figure 2-Figure 4 As shown, a leveling heating device for a flexible circuit board reinforced steel strip is used in conjunction with the steel strip glue equipment commonly used in the prior art. The leveling heating device includes a base 10, which is downward from the upper surface of the base 10 There is a diversion groove 11 for the steel strip to pass through, and the bottom of the diversion groove 11 is provided with a boss 12, and the boss 12 is arranged along the length direction of the diversion groove 11, and the boss 12 and the diversion groove A gap is provided between the groove walls on both sides of the 11, and a limit plate 13 for ensuring that the steel strip 90 passes through the diversion groove 11 in a straight line is respectively provided in the gap on both sides of the boss 12, and the limit plate 13 is parallel to the diversion groove 11 The length direction is set and the distance between it and the boss 12 can be adjusted to adapt to ...

Embodiment 2

[0054] Such as Figure 5-6 As shown, embodiment 2 is basically the same as embodiment 1, the difference is that two parallel diversion grooves 11 are provided on the bottom plate 10, the boss 12, the limit plate 13, the height limit baffle plate 14, the electromagnetic heating Devices 20 are two sets of adaptation settings. Two steel strips can be glued at the same time, greatly improving production efficiency. The number of the diversion grooves 11 can also be set to 3, 4, 5 etc. according to the needs, and the boss 12, the limit plate 13, the height limit baffle 14, and the electromagnetic heater 20 are all adapted. Several sets.

[0055] In Embodiments 1 and 2, the boss 12 and the bottom of the diversion groove 11 can be made integrally, or can be fixed on the bottom of the diversion groove 11 .

[0056] The electromagnetic heaters 20 are two symmetrically arranged above and below the diversion groove 11, which can heat the steel strip at the same time, so that the upper...

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PUM

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Abstract

The invention discloses a method for gluing a flexible circuit board enhancing steel strip. The method comprises steps of: cleaning a steel strip to be glued; flattening the cleaned steel strip; heating the steel strip to 120 to 140 degree centigrade in a noncontact way by using an electromagnetic heater; press-fitting the steel strip and a thermally-sensitive adhesive tape by using an internally-heating press-fit rubber roller; flattening and heating the steel strip in a noncontact way by using a flattening and heating device of the flexible circuit board enhancing steel strip. The flatteningand heating device of the flexible circuit board enhanced steel strip comprises a base. A plurality of guide grooves are disposed downwardly on the upper surface of the base. Bosses are arranged at the bottoms of respective guide grooves, are arranged in parallel with the length direction of the guide grooves. A gap is disposed between the walls on both sides of the guide grooves. Stopping platesare arranged in the gap at each side. A height-limiting baffle for flattening the steel strip spans the guide grooves. The electromagnetic heater is arranged in front of the height-limiting baffle and perpendicular to the length direction of the guide grooves. The method is high in processing efficiency, efficient in energy and friendly to environment, and prevents the steel strip from being polluted.

Description

technical field [0001] The invention relates to the field of processing of flexible circuit boards, in particular to a method for reinforcing steel belts with glue on flexible circuit boards. Background technique [0002] The biggest advantage of flexible circuit boards is that they are flexible, can be bent, wound, and folded freely, can be arranged arbitrarily according to the requirements of space layout, and can be moved and stretched arbitrarily in three-dimensional space, so as to achieve the integration of component assembly and wire connection; but However, the ability to carry components is a big deficiency. Usually, a steel strip reinforcement is added to the flexible circuit board welded with components to improve its carrying capacity. In the prior art, the glue is usually pressed on the steel belt first, which is a pre-pressing, and then the circuit board and the steel belt are pressed together, which is the second pressing. Most of the adhesives used for bondi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/00H05B6/10
Inventor 李明潘陈华郭瑞明
Owner SHENZHEN HUALIN CIRCUIT TECH