CN102014334B

CN102014334B - Sound film molding pressing die for loudspeaker

Info

Publication number: CN102014334B
Application number: CN2010101037151A
Authority: CN
Inventors: 钟德煌
Original assignee: JIANGSU DONGHE SPEAKER PARTS CO Ltd
Current assignee: JIANGSU DONGHE SPEAKER PARTS CO Ltd
Priority date: 2010-01-29
Filing date: 2010-01-29
Publication date: 2013-12-04
Anticipated expiration: 2030-01-29
Also published as: CN102014334A

Abstract

The invention provides a sound film molding pressing die for a loudspeaker, consisting of an upper die part and a lower die part. The lower die part consists of a lower die head, a movable pressing sleeve, a reset spring and a lower template, wherein the lower die head comprises a molding die body and a bearing column; the molding die body consists of a lower molding surface and a lower plunger ring; the movable pressing sleeve is sleeved on the molding die body and the bearing column; the reset spring is sleeved on the bearing column, and is positioned between the movable pressing sleeve and the lower template; and an upper die head is coaxial with the lower die head. Because the movable pressing sleeve and the reset spring are additionally arranged in the lower die head part, when the sound film is pressed, grey cloth to be molded is firstly compacted by an upper plunger ring and the movable pressing sleeve so as to ensure that the peripheral cloth is stressed uniformly and then is subject to drawing and compression moulding. Therefore, the folding phenomenon on the periphery of a sound film finished product can be eliminated, the sound film molding pressing die can be operated only by one person, the finished product can be automatically demoulded, and the operation is safe, convenient, and labor-saving.

Description

The loudspeaker voice diaphragm forming compacting tool set

Technical field:

The present invention relates to a kind of mould, relate in particular to a kind of loudspeaker voice diaphragm forming compacting tool set.

Background technology:

But generally by the compacting of the pull and stretch material pull and stretch such as gum dipped paper, latex bonded fibre, aluminium film, formed for the sound film on loudspeaker, loudspeaker why can sounding, the sound film occupies very important status, the sound film is the key factor that determines sound, characteristic quality, as a kind of structural representation that Fig. 1 is the sound film, it is comprised of corrugated plating 91, circular arc convex body 92 and flanging 93.Conventional sound film forming mould is comprised of upper mould part and lower mould part, and upper mould part is comprised of cope match-plate pattern 2 and upper die head 3, and upper die head 3 is fixed on cope match-plate pattern 2; Lower mould part is comprised of lower die head 4 and lower bolster 7, and lower die head 4 is fixed on lower bolster 7.In pressing process, the surrounding of sound film is easy to produce fold, and the ratio of the larger generation fold of the drawing height of sound film is just higher, this is to produce the master operation of waste product or defective products in current sound film production process, produce this class defect, when the sound film is played glue in the loud speaker assembling, will make the sound film be connected with voice coil loudspeaker voice coil not tight, not only affect the tonequality of loud speaker but also affect presentation quality.Existing sound film forming mould needs two people's co-operations in the process of compacting sound film simultaneously, if coordinate the bad industrial accident that is easy to occur, all can bring very large injury and loss to operator and enterprise.

Summary of the invention:

In order to overcome the problems referred to above, the invention provides a kind of loudspeaker voice diaphragm forming compacting tool set, adopt this mould, can eliminate the wrinkling defect in sound mould process processed, greatly reduce percent defective and defective products rate, simultaneously, this mould is as long as a people just can operate smoothly, and finished product energy automatic spring, without manual depanning, both saved manually, improved again the fail safe of operation, for manufacturer has saved cost.

The technical solution adopted in the present invention is:

Described loudspeaker voice diaphragm forming compacting tool set, comprise upper mould part and lower mould part, upper mould part comprises upper die head and cope match-plate pattern, cope match-plate pattern is fixedly mounted on the expansion link of forming machine, upper die head is fixedly mounted on the lower surface of cope match-plate pattern, upper die head is comprised of upper forming surface and upper trim ring, and the shape of upper forming surface is consistent with the upper surface shape of sound film, and the width of upper trim ring is greater than the width of the flanging of sound film; Lower mould part comprises lower die head and lower bolster, lower bolster is fixedly mounted on the workbench of forming machine, lower die head is fixedly mounted on the upper surface of lower bolster, lower die head comprises compacted under face and lower clamping ring, the shape of compacted under face is consistent with the lower surface shape of sound film, and the width of lower clamping ring is identical with the width of the flanging of sound film; Upper die head and lower die head are coaxially installed; It is characterized in that: also comprise mobile gland and back-moving spring in lower mould part, the wall body cross sectional shape of mobile gland is L shaped, the upper end external diameter of mobile gland is suitable with the external diameter of upper die head, the upper end endoporus of mobile gland coordinates with the shaping mould body space of lower die head, the lower end endoporus of mobile gland coordinates with pressure-bearing intercolumniation gap, back-moving spring is sleeved on the pressure-bearing post, and between the upper surface of the lower surface of mobile gland and lower bolster, under the normality condition, the upper surface of mobile gland is higher than the peak of the upper forming surface of lower die head moulding die body.

Owing in the lower die head parts at existing sound film forming mould, having increased mobile gland and back-moving spring, when compacting sound film, the upper trim ring of upper die head and the upper surface of mobile gland are first by blank holding to be formed, make peripheral blank uniform stressed, and then pull and stretch is compressing, so just can eliminate the wrinkling reason of sound mould system, can not only significantly reduce the generation of waste product and defective products, and the sound film finished product suppressed depanning automatically, without manual depanning, simple to operate, and, as long as a people can operate, improved the fail safe of operation.The sound film no wrinkle suppressed by the present invention, can prevent that loud speaker is when glue is played in production and assembly, and because of flanging, to have the folding sound film caused to be connected with voice coil loudspeaker voice coil not tight, causes the undesired vibration of sound film, thereby affect tonequality and the outward appearance of loud speaker.This mould structure is applicable to the drawing and forming with soft thin base parts such as cloth, aluminium sheet, copper coins.

The accompanying drawing explanation:

A kind of structural representation that Fig. 1 is the sound film;

Fig. 2 is the structural representation of existing sound film molding mold;

Fig. 3 is structural representation of the present invention;

The cutaway view that Fig. 4 is mobile gland;

In figure: the 1-expansion link; The 2-cope match-plate pattern; The 3-upper die head; The 4-lower die head; 5-moves gland; The 6-back-moving spring; The 7-lower bolster; The 8-workbench; The upper forming surface of 31-; The upper trim ring of 32-; 41-moulding die body; 42-pressure-bearing post; 43-compacted under face; The 44-lower clamping ring; 51-upper end external diameter; 52-upper end endoporus; 53-lower end endoporus; The 91-corrugated plating; 92-circular arc convex body; The 93-flanging.

Embodiment:

Below in conjunction with accompanying drawing explanation specific embodiment of the invention scheme.

As shown in Figure 3, Figure 4, described loudspeaker voice diaphragm forming compacting tool set, comprise upper mould part and lower mould part, upper mould part comprises cope match-plate pattern 2 and upper die head 3, cope match-plate pattern 2 is fixedly mounted on the expansion link 1 of forming machine, and upper die head 3 is fixedly mounted on the lower surface of cope match-plate pattern 2, and upper die head 3 is comprised of upper forming surface 31 and upper trim ring 32, the shape of upper forming surface 31 is consistent with the upper surface shape of sound film, and the width of upper trim ring 32 is greater than the width of the flanging 93 of sound film, lower mould part comprises lower die head 4, mobile gland 5, back-moving spring 6 and lower bolster 7, lower die head 4 is comprised of moulding die body 41 and pressure-bearing post 42, moulding die body 41 is comprised of compacted under face 43 and lower clamping ring 44, the shape of compacted under face 43 is consistent with the shape of the lower surface of sound film, the width of lower clamping ring 44 is identical with flanging 93 width of sound film, the wall body cross sectional shape of mobile gland 5 is L shaped, the upper end external diameter 51 of mobile gland 5 is suitable with the external diameter of upper die head 3, moulding die body 41 matched in clearance of upper end endoporus 52 and lower die head 4, lower end endoporus 53 and pressure-bearing post 42 matched in clearance, back-moving spring 6 is sleeved on pressure-bearing post 42, and between the upper surface of the lower surface of mobile gland 5 and lower bolster 7, under the normality condition, the upper surface of mobile gland 5 is higher than the peak of compacted under face 43, lower bolster 7 is fixed on the workbench 8 of forming machine, and the pressure-bearing post 42 in lower die head 4 is fixed on the upper surface of lower bolster 7, should guarantee during installation that lower die head 4 is coaxial with upper die head 3.

Its using method is: cloth material base to be formed is placed on mobile gland 5, along with moving down of upper die head 3, the upper trim ring 32 of upper die head 3 and the upper surface of mobile gland 5 are first by blank holding to be formed, make the peripheral uniform stressed of cloth, and then pull and stretch is compressing, in drawing process, along with moving down of

upper die head

3, 5 elastic force that overcome back-moving spring 6 of mobile gland move down thereupon, when upper trim ring 32 and lower clamping ring 44 pressing, blank to be formed has been suppressed audio film finished product, upper die head 3 moves up subsequently, under the effect of back-moving spring 6, be moved back into initial condition on mobile gland 5, the sound film finished product now pressed also is moved gland 5 thereupon and ejects, realize automatic depanning.

Claims

1. a loudspeaker voice diaphragm forming compacting tool set, comprise upper mould part and lower mould part, upper mould part comprises cope match-plate pattern (2) and upper die head (3), upper die head (3) is fixedly mounted on cope match-plate pattern (2) lower surface, cope match-plate pattern (2) is fixedly mounted on the expansion link (1) of forming machine, upper die head (3) is comprised of upper forming surface (31) and upper trim ring (32), the shape of upper forming surface (31) is consistent with the shape of the upper surface of sound film, and the width of upper trim ring (32) is greater than the width of the flanging (93) of sound film, lower mould part comprises lower die head (4) and lower bolster (7), lower die head (4) is fixedly mounted on the upper surface of lower bolster (7), lower bolster (7) is fixed on the workbench (8) of forming machine, lower die head (4) is comprised of moulding die body (41) and pressure-bearing post (42), moulding die body (41) is comprised of compacted under face (43) and lower clamping ring (44), the shape of compacted under face (43) is consistent with the shape of the lower surface of sound film, and the width of lower clamping ring (44) is identical with the width of the flanging (93) of sound film, upper die head (3) is coaxial with lower die head (4), it is characterized in that: lower mould part also comprises mobile gland (5) and back-moving spring (6), the wall body cross sectional shape of mobile gland (5) is L shaped, upper end external diameter (51) is suitable with the external diameter of upper die head (3), moulding die body (41) matched in clearance of upper end endoporus (52) and lower die head (4), lower end endoporus (53) and pressure-bearing post (42) matched in clearance, back-moving spring (6) is sleeved on pressure-bearing post (42), and be positioned between the upper surface of the lower surface of mobile gland (5) and lower bolster (7), under the normality condition, the upper surface of mobile gland (5) is higher than the peak of the compacted under face (43) of the moulding die body (41) of lower die head (4).