Tuning film production process

Abstract

The invention discloses a tone tuning film production process, which comprises the following steps of: 1, preparing a base material, namely a thin film with a non-porous surface, which is made of metal or plastic; step 2, cutting: cutting the film into a film sheet with a required shape and a required size; step 3, punching: punching holes with the required hole number and the required hole diameter obtained according to the required air permeability on the thin film sheet to obtain the tuning film; therefore, the tuning film with the required hole number, required hole diameter and required shape can be prepared, the tuning film with the required air permeability can be prepared, various requirements of acoustic engineers are met, the cost is saved, a large number of tuning films with different air permeability do not need to be stored, only the tuning films need to be prepared according to requirements, the warping phenomenon is avoided, the consistency of the air permeability is ensured, and the production efficiency is improved. And the benign frequency response curve is ensured.

Description

technical field [0001] The invention relates to the technology in the field of speaker tuning nets, in particular to a production process for tuning membranes. Background technique [0002] With the progress of the times, people's requirements for music enjoyment are getting higher and higher, especially the quality of sound is no longer as good as it used to be. The requirements for speaker design are getting smaller and smaller, the power is getting bigger and bigger, the sound quality is getting more and more colorful, and the designer's tuning sound is a new challenge for the speaker. The tuning net produced by the die-cutting factory is shipped to the speaker factory, and the speaker factory pastes the tuning net on the speaker to complete the speaker assembly and listen to the test to obtain the frequency response curve. [0003] In the tradition of speaker tuning, the damping coefficient is adjusted to the frequency response curve by using the thickness of the tuning...

AI Technical Summary

Problems solved by technology

[0007] 2. Tuning net (that is, polyester net) is actually a net made of polyester fiber. It has a strong imitation silk feeling. Polyester fiber has high strength and elastic recovery ability, and the fiber strength is 2.6~5.7CN / dtex. The high-strength fiber is 5.6~8.0cN / dtex, the elasticity is close to that of wool, and it can be almost completely recovered when it is stretched by 5~6%. The biggest disadvantage of the tuning mesh is that the tuning mesh made of polyester mesh often has inconsistent curves when the speaker is pasted on the mesh. For the shape of the tuning mesh, the tuning mesh is glued to the back glue, and when it is pasted on the release paper, when the mesh is pulled off with a camera, there will be a slight amount of the tuning mesh due to the pulling of the rubber surface. If the shape changes, the operator will paste the deformed tuning mesh on the vent hole of the speaker, and then the employee will press it with tweezers. Different people or the same person will also have different strengths, and the fit will be loose. It affects the air flow of the speaker vent holes, resulting in poor frequency response curves of different ratios of the speaker;

[0008] And, the deformation of the tuning net after being stretched by the rollers of the molding machine in the die-cutting factory, the tuning net is caused by the internal stress and restoring force of the fiber filaments, causing the mesh to spring back and warp, which affects the frequency deviation of the frequency response curve at low frequencies, intermediate frequencies, and high frequencies Up or down, because before the tuning net is made of a large bundle of fiber-woven polyester mesh, the mesh base material is cut into a small energy-saving tuning net on the machine by the film cutting factory, and then installed The roller machine is pulled by the roller shaft of the machine, and the ventilation holes of the tuning net will be deformed, and then bonded with the back glue release type, rotating and deformed, and pressed together to punch the shape, and the air flow of the tuning net is not the original test. , the workers in the speaker factory were removing the mesh from the film. At this time, the mesh was deformed again, and the air flow rate changed again. Then it was pasted on the vent hole of the speaker. After the test, the frequency response curve of the speaker ran away, which was not the curve originally designed. , the operator often has to scrap the entire batch of speakers after the speaker has a bad frequency response curve, which wastes material and manpower

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