CN1050259C

CN1050259C - Method for mfg. cone of loud-speaker

Info

Publication number: CN1050259C
Application number: CN96116480A
Authority: CN
Inventors: 黄新民
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-21
Filing date: 1996-08-21
Publication date: 2000-03-08
Anticipated expiration: 2016-08-21
Also published as: CN1148315A

Abstract

The present invention relates to a method for manufacturing sound basins of loud-speakers and a structure thereof. The present invention mainly adopts a body with the original shape of a sound basin, wherein the body is made of composite material of p. p (polypropylene); sheet plate material of which the thickness is from 0.1mm to 0.2mm is used as raw material; the body is molded by vacuum moulding and has a wave-shaped hanging edge; an automatic punching machine is used for cutting the body into a needed sound basin. The sound basins of a loud-speaker of the present invention comprises a conical body with a big upper part and a small lower part; the top end of the conical body is provided with the wave-shaped hanging edge which extends outwards. The present invention achieves the purposes of simplifying a manufacturing process, enhancing production efficiency, reducing cost, and enhancing the quality of the sound basin by means of automatic manufacturing operation.

Description

The manufacture method of paper cone for loudspeaker and structure thereof

The present invention is the manufacture method and the structure thereof of relevant a kind of paper cone for loudspeaker, particularly a kind of method of the paper cone for loudspeaker in order to quick manufacturing loud speaker.

The loudspeaker of indication of the present invention are a kind of loudspeaker that utilize the voice coil loudspeaker voice coil excitation to drive sound basin double vibrations, the sound basin of papery is that present quantity is maximum, and minimum a kind of of cost of manufacture, it comprises a up big and down small tapering part, and the top of this tapering part outwards is the outstanding limit of wrinkle Zhe shape extension part certainly, the moulding of this two part system by pulp mold and drying, wherein the outstanding limit part of this wrinkle Zhe mainly is the action up and down reciprocatingly that is used for cooperating this sound basin, and the outstanding limit of this kind papery is owing to fitting with other flexible material more in addition or applying thereon, so its manufacturing cost is lower, just because of this, this kind papery sound basin is still most widely used and quantity the maximum so far.

And aforesaid papery sound basin, though have cost low, produce easily and advantage such as method for making is simple, but have following shortcoming:

1, the piston action of sound basin is limited, is unsuitable for the use of high-fidelity (Hi-Fi) sound equipment.

2, its employed paper pulp is a kind of natural material, and strengthens the chemical mixture of usefulness, and is often indefinite because of the source of paper pulp, the quality of compound in the chemical raw material, and the source of goods, personnel's proficiency etc., and cause the instability of quality; Factor like that all can cause the quality of this papery sound basin bad, and further influences the tonequality of loudspeaker.

With regard to the required sound basin of loud speaker, it has several prerequisite conditions:

1, light weight, system is promoted by voice coil loudspeaker voice coil because of the awl basin, if the quality of awl basin is excessive, then voice coil loudspeaker voice coil is formed overweight load, then can cause boring the heavy of basin, and causes the efficient of loudspeaker to reduce.

2, high damping, damping (damping) is that energy mode with heat energy in transmission course is scattered and disappeared, damping is higher, be that its obstructing capacity to energy conduction is stronger, in other words, be that its endergonic ability is stronger, awl basin system links to each other with voice coil loudspeaker voice coil with its tap web portion, when the awl basin is subjected to the promotion of voice coil loudspeaker voice coil and the reciprocating while, also having portion of energy is located to transmit to loudspeaker flange (edge) by awl basin tap web place, if the damping of awl basin is not high, can't intercept the conduction of the energy of awl basin own, energy conducts to flange by tap web, be subjected to stopping of flange peripheral metal die casting body, conduct by the flange back coupling and to tap web again, and interfere by the energy of tap web, promptly form back coupling distortion (FeedbakDistortion) to the flange conduction with the back, and if the damping height of awl cone material, can energy by tap web when flange conducts, promptly scattered and disappeared with the form of heat, do not have and feedback distortion and produce.

3, high rigidity, that is the material of awl basin must have higher young's modulus (Young ' s Modulus), the tap web system of awl basin is connected in voice coil loudspeaker voice coil and damper (damper), the outer rim of awl basin then links to each other with the metal crimp body of casting with flange, promptly bore basin the stressed supporting of inside and outside two ora terminalis is only arranged, and the awl of the overwhelming majority except that these two parts pelvic surface of sacrum is unsettled, the vibration system of awl basin is subjected to the promotion of voice coil loudspeaker voice coil, and be subjected to damper and the formed buffering of flange to pull and support effect again in the time of the vibration of awl basin, if the rigidity deficiency of awl basin then very easily produces deformation, in case the deformation of awl basin produces, also must change by its air dilatational wave that promotes to form, and reduce the fidelity factor of loudspeaker.

Desirable awl cone material should possess simultaneously as three important documents such as above-mentioned lightweight, high damping and high rigidity, the loudspeaker awl basin of generally commonly using, most systems make with papery, though it possesses the characteristics that lightweight and high damping are arranged, right its rigidity is not enough, very easily deformation and breakage, make moist, and make the quality instability, this is the disadvantage place of papery awl basin.

Therefore, main purpose of the present invention is exactly that a kind of high-quality paper cone for loudspeaker will be provided, mainly be to use the making raw material of p.p (Polypropylene polypropylene) composite material for this sound basin, so that made sound basin is aspect conditions such as lightweight, high damping and high rigidity, all have good equilibrium performance, and the quality of these loudspeaker is improved.

An of the present invention purpose will provide a kind of fabrication schedule that can produce paper cone for loudspeaker fast exactly, and wherein this sound basin mainly is by the p.p composite material, through vacuum forming, its production process is quick and easy, can simplify production process, and improve the output of this sound basin widely.

Another purpose of the present invention, to provide a kind of moisture-proof good sound basin exactly, wherein this sound basin system is made by the p.p composite material, itself is exactly a kind of material that does not absorb water, and therefore will have fabulous moisture resistance and moisture resistance for moisture content in the environment or humidity.

A further object of the present invention will provide a kind of sound basin of good endurance exactly, and wherein employed p.p composite material is damaged by worms easily unlike traditionally on paper sound basin, so the papery sound basin that its useful life will be more traditional is longer.

Another object of the present invention, a kind of paper cone for loudspeaker manufacture method useful to environmental protection will be provided exactly, wherein this is used for making the p.p composite material of sound basin, it is a kind of recuperable material, it can not produce serious pollution problem yet in manufacturing process, obtaining of raw material more do not need as traditionally on paper sound basin, must destroy forest and obtain timber, so can't cause any destruction to environment.

The present invention is achieved in that

One, manufacture method, its steps in sequence is as follows:

A, choose thickness lamellar p.p (Polypropylene polypropylene) composite material between 0.1～0.2mm,

B, should laminal p.p composite material, place the vacuum forming machine, vacuum forming is a sound basin prototype body,

C, the sound basin prototype body that abovementioned steps is finished are cut out with the automatic clicker tool and to be removed unwanted marginal portion, promptly finish required sound basin.

Two, the paper cone for loudspeaker of making according to above-mentioned manufacture method of the present invention, it mainly comprises a up big and down small bullet, and also has the outstanding limit that outwards is wavy extension on the top of this bullet.

Relevant technology contents of the present invention and embodiment, existing conjunction with figs. explanation as back:

The simple declaration of accompanying drawing:

Fig. 1 is the sound basin structural map section of finishing according to manufacturing process of the present invention.

At first see also Fig. 1, as shown in the figure, this sound basin is a up big and down small bullet 1, wherein also has the outstanding limit 10 that outwards is wavy extension on the top of this bullet 1.The mode and the manufacturing step thereof of its manufacturing are:

1, chooses the lamellar p.p composite material of thickness between 0.1～0.2mm.

2, should laminal p.p composite material, place the vacuum forming machine, vacuum forming is the blank of sound basin, i.e. sound basin prototype body.

3, with the aforementioned sound basin prototype body of finishing, cut out the unwanted marginal portion of removal with the automatic clicker tool, finish sound basin as shown in Figure 1.

Wherein should be in order to make the laminal p.p composite material of sound basin, it can be with cylinder calendering or with the mode of blowing moulding, and the lamellar p.p composite material of acquisition desired thickness, so in the manufacturing of raw material, can obtain the uniform raw material of thickness at an easy rate;

Review tradition and make the mode of sound basin with paper with paper pulp, the factor such as wayward of the concentration of paper pulp, moisture content and paper pulp fiber wherein, it is if desire obtains the uniform papery raw material of thickness, and obviously the utmost point is not easy.

Again the present invention is done one relatively with the manufacture of the full paper sound basin of tradition, its good and bad as after:

1, production efficiency:

The manufacturing process of traditionally on paper sound basin is roughly:

A, paper pulp stir → fish for paper pulp and is poured into mould → hot-forming → cut.

B, demand manpower are about 3～4 people (calculating with 3 people)

C, output are about: 1 mould/10 second, 4 sound basin/1 moulds

6 * 4 * 60 ÷ 3=480 sound basin/people/time

Manufacturing process of the present invention:

A, obtain lamellar p.p composite → vacuum forming → automatic cutting and be cut into type.

B, demand manpower are about 0.5 people.

C, output are about: 1 mould/10 second, 4 sound basin/1 moulds

6 * 4 * 60 ÷ 0.5=2880 sound basin/people/time

So, by above-mentioned more as can be known, output of the present invention obviously exceeds several times than traditional papery sound basin output.

2, quality:

Traditional papery sound basin, because of the source instability of its raw material papery, the quality instability of papery, personnel's degree of being skilled in technique difference, and the control of chemical compound factor such as is difficult for, and cause its product quality to be difficult to stablize; Review sound basin of the present invention, wherein can add as mineral matter or other additives, and make its physical characteristic change to required condition, and this kind also obviously is better than traditional papery sound basin with the made sound basin of p.p composite material at aspects such as rigidity, light weight and durabilities.

3, moisture-proof:

The p.p composite material itself is a kind of material that does not absorb water, so it all has good resistivity for moisture content in the environment or humidity, can not change its original rigidity because of the infringement of humidity, this characteristic can make loudspeaker change in the extension of front end; Otherwise, the sound basin of full papery, then very easily suction, and in a single day it absorb moisture content, and its original rigidity will be subjected to great influence, and the tonequality that loudspeaker are sent reduces.

4, durability:

Full paper is natural string, is subject to the moisture infringement of environment or is damaged by worms and corrupt; Reviewing the p.p material then is a kind of petrochemicals, and its moisture-proof and durable ability are all good than traditional paper material, and its useful life is also long.

5, the feature of environmental protection:

The raw material of traditional full papery sound basin must be obtained by cutting down forest, and it is caused harm greatly for natural environment, and paper fiber also can produce the problem of contaminated wastewater when manufacturing, therefore need the equipment of sewage disposal; Reviewing p.p composite material of the present invention, is a kind of petrochemicals, and it can produce in a large number, nontoxic, and can reclaim, its steady sources more can add required compound to change its physical property, aspect its condition that obtains at environmental protection and raw material, all be better than sound basin made of paper.

Sum up aforesaid explanation, sound basin of the present invention, its physical property obviously is better than traditional papery sound basin, and it reaches on production capacity than the simplification of conventional paper sound basin on the program of making, the sound basin that also will be higher than conventional paper, therefore, the present invention obviously has substantial progress, and industrial practicality.

Claims

1. the manufacture method of a paper cone for loudspeaker, its steps in sequence is as follows:

A, choose thickness lamellar polypropylene composite material between 0.1～0.2mm,

B, should laminal polypropylene composite material, place the vacuum forming machine, vacuum forming is a sound basin prototype body,

2. a paper cone for loudspeaker of making according to the manufacture method of the described paper cone for loudspeaker of claim 1 comprises a up big and down small bullet (1), it is characterized in that, also has the outstanding limit (10) that outwards is wavy extension on the top of this bullet (1).