CN201663692U - Loudspeaker voice diaphragm forming and pressing die - Google Patents

Abstract

A loudspeaker voice diaphragm forming and pressing die comprises an upper die component and a lower die component; the lower die component comprises a lower die head, a movable pressing sleeve, a return spring and a lower die plate, wherein the lower die head comprises a forming die body and a pressure-bearing pillar, the forming die body comprises a lower forming surface and a lower clamping ring, the movable pressing sleeve is sleeved on the forming die body and the pressure-bearing pillar, and the return spring is sleeved on the pressure-bearing pillar and positioned between the movable pressing sleeve and the lower die plate; and an upper die head is coaxial with the lower die head. The movable pressing sleeve and the return spring are additionally arranged at the part of the lower die head, the fabric blanks to be formed are compressed through an upper clamping ring and the movable pressing sleeve during pressing the voice diaphragm, and the stress of the peripheral fabric is uniform, and then the fabric is pressed and formed in a drawing way, and therefore, the phenomenon of folding the peripheries of the voice diaphragm finished products can be eliminated, the voice diaphragm forming and pressing operation can be operated only by one person, the automatic die stripping of finished products is performed, and the operation is safe, convenient and labor-saving.

Description

Sound film of loudspeaker moulding compacting tool set

Technical field:

The utility model relates to a kind of mould, relates in particular to a kind of sound film of loudspeaker moulding compacting tool set.

Background technology:

But the sound film that is used on the loudspeaker is generally formed by the compacting of pull and stretch material pull and stretch such as gum dipped paper, latex bonded fibre, aluminium film, loudspeaker why can sounding, the sound film occupies critical role, the sound film is the key factor of decision sound, characteristic quality, as Fig. 1 is a kind of structural representation of sound film, and it is made up of corrugated plating 91, circular arc convex body 92 and flanging 93.Conventional sound film moulding compacting tool set is made up of upper mould part and lower mould part, and upper mould part is made up of cope match-plate pattern 2 and last die head 3, and last die head 3 is fixed on the cope match-plate pattern 2; Lower mould part is made up of lower die head 4 and lower bolster 7, and lower die head 4 is fixed on the lower bolster 7.In pressing process, be easy to produce fold around the sound film, and the ratio of the big more generation fold of pull and stretch height of sound film is just high more, this is the master operation that produces waste product or defective products in the present sound film production process, produce this class defective, when the sound film was played glue in the loud speaker assembling, it is not tight that the sound film is connected with voice coil loudspeaker voice coil, not only influences the tonequality of loud speaker but also influence presentation quality.Existing simultaneously sound film moulding compacting tool set needs two people's co-operations in the process of compacting sound film, if cooperate the bad industrial accident that is easy to take place, all can bring very big injury and loss for operator and enterprise.

The utility model content:

In order to overcome the problems referred to above, the utility model provides a kind of sound film of loudspeaker moulding compacting tool set, adopts this mould, can eliminate the wrinkling defective in the sound mould system process, greatly reduce percent defective and defective products rate, simultaneously, this mould is as long as a people just can operate smoothly, and finished product can eject automatically, need not manual depanning, both saved manually, improved the fail safe of operation again, for manufacturer has saved cost.

The technical scheme that the utility model adopted is:

Described sound film of loudspeaker moulding compacting tool set, comprise upper mould part and lower mould part, upper mould part comprises die head and cope match-plate pattern, cope match-plate pattern is fixedly mounted on the expansion link of make-up machine, last die head is fixedly mounted on the lower surface of cope match-plate pattern, last die head is made up of last forming surface and last trim ring, and the shape of last forming surface is consistent with the upper surface shape of sound film, and the width of last 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 make-up 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; Last die head and the coaxial installation of lower die head; It is characterized in that: in lower mould part, also comprise mobile gland and back-moving spring, 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 last die head, the upper end endoporus of mobile gland cooperates with the shaping mould body space of lower die head, the lower end endoporus of mobile gland cooperates with pressure-bearing intercolumniation crack, 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 last forming surface of lower die head moulding die body.

Owing in the lower die head parts of existing sound film moulding compacting tool set, increased mobile gland and back-moving spring, when compacting sound film, the last trim ring of last die head and the upper surface of mobile gland are earlier with blank holding to be formed, make the blank of periphery evenly stressed, and then pull and stretch compression moulding, so just can eliminate the wrinkling reason of sound mould system, can not only reduce the generation of waste product and defective products significantly, and the sound film finished product that suppresses depanning automatically, need not manual depanning, simple to operate, and, improved the fail safe of operation as long as a people can operate.Sound film no wrinkle by the utility model suppresses can prevent loud speaker when glue is played in production and assembly, and to have the folding sound film that causes to be connected with voice coil loudspeaker voice coil not tight because of flanging, causes the undesired vibration of sound film, thereby influence the 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.

Description of drawings:

Fig. 1 is a kind of structural representation of sound film;

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

Fig. 3 is a structural representation of the present utility model;

Fig. 4 is the cutaway view of mobile gland;

Among the figure: the 1-expansion link; The 2-cope match-plate pattern; The last die head of 3-; The 4-lower die head; 5-moves gland; The 6-back-moving spring; The 7-lower bolster; The 8-workbench; The last forming surface of 31-; The last 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 description of drawings specific embodiments of the present utility model.

As shown in Figure 3, Figure 4, described sound film of loudspeaker moulding compacting tool set, comprise upper mould part and lower mould part, upper mould part comprises cope match-plate pattern 2 and last die head 3, cope match-plate pattern 2 is fixedly mounted on the expansion link 1 of make-up machine, and last die head 3 is fixedly mounted on the lower surface of cope match-plate pattern 2, and last die head 3 is made up of last forming surface 31 and last trim ring 32, the shape of last forming surface 31 is consistent with the upper surface shape of sound film, and the width of last 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 made up of moulding die body 41 and pressure-bearing post 42, moulding die body 41 is made up 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 last 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 the 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 make-up machine, and the pressure-bearing post 42 in the 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 last die head 3.

Its using method is: cloth material base to be formed is placed on the mobile gland 5, along with moving down of last die head 3, the last trim ring 32 of last die head 3 and the upper surface of mobile gland 5 are earlier with blank holding to be formed, make the periphery of cloth evenly stressed, and then pull and stretch compression moulding, in drawing process, along with moving down of last die head 3,5 elastic force that overcome back-moving spring 6 of mobile gland move down thereupon, when last trim ring 32 and lower clamping ring 44 pressings, blank to be formed has been suppressed audio film finished product, go up subsequently die head 3 and move up, under the effect of back-moving spring 6, be moved back into initial condition on the mobile gland 5, the sound film finished product that press this moment also is moved gland 5 thereupon and ejects, and realizes automatic depanning.

Claims (1)

1. sound film of loudspeaker moulding compacting tool set, comprise upper mould part and lower mould part, upper mould part comprises cope match-plate pattern (2) and last die head (3), last 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 make-up machine, last die head (3) is made up of last forming surface (31) and last trim ring (32), and the shape of last forming surface (31) is consistent with the shape of the upper surface of sound film, and the width of last 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 make-up machine, lower die head (4) is made up of moulding die body (41) and pressure-bearing post (42), moulding die body (41) is made up 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; Last 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 last 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 the 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 compacted under face (43) of the moulding die body (41) of lower die head (4).

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