CN101737665A

CN101737665A - Manufacturing method of LED lamp string

Info

Publication number: CN101737665A
Application number: CN200810072257A
Authority: CN
Inventors: 张文龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-26
Filing date: 2008-11-26
Publication date: 2010-06-16
Anticipated expiration: 2028-11-26
Also published as: CN101737665B

Abstract

The invention discloses a manufacturing method of an LED lamp string, comprising the following steps of: sealing an LED unit in a way of injecting glue to a mould; placing the LED unit into a cavity which is encircled by an upper concave cavity of an upper mould and a lower concave cavity of a lower mould and can completely contain the LED unit and a lead head connected with the LED unit, and then injecting the glue to the cavity so that thermoplastic resin colloid seals two exposed lamp bases of the LED unit and the connection positions of the two exposed lamp bases and leads. The invention not only meets the functions of electric insulation and seal, but also greatly enhances the manufacturing efficiency of the LED lamp string, prolongs the service life of the LED lamp set and has attractive effects of very good product appearance consistency and the like.

Description

A kind of preparation method of LED lamp string

Technical field

The present invention relates to a kind of preparation method of decorating lighting lamp, particularly relate to a kind of preparation method that realizes the LED lamp string that seals fully.

Background technology

LED (English is light emitting diode) is a light emitting diode, a kind ofly adopt electroluminescent semi-conducting material manufacturing to form, LED has that voltage is low, usefulness is high, monochromaticjty is good, applicability is strong, good stability, the response time is short, the life-span is long, free from environmental pollution, etc. good characteristic; LED uses low-tension supply, and supply voltage has more security between 2-24V; The LED consumed energy reduces 80% with the incandescent lamp of light efficiency; Each unit LEDs is very little, can be prepared into the ligthing paraphernalia of different shape, and is suitable for different environment; Because LED has good characteristic as above, therefore be widely used in the field such as decorative lighting, such as LED lamp string is exactly a kind of decorating lighting lamp, LED lamp string connects into a plurality of LED unit a lot of in fact exactly by lead, the lamp string is arranged on the corresponding object or place, can play decorative effect preferably, such as can be used to bridge is decorated, angle, kiosk building is decorated, the park is decorated, municipal administration is decorated etc., and the indoor and outdoor that can be applicable to multiple mode is decorated.In the manufacturing process of LED lamp string, normally earlier two lamp bases of each LED unit are connected with corresponding lead respectively, between two lamp bases of the connection of two lamp bases of each LED unit and lead, insert of support and the insulation of the spacer of a thermoplastic resin body as two lamp bases, and then pack into hot shortness's sleeve pipe, after suitable heating, make it to shrink and tighten, wrap LED, LED two lamp bases, spacer relatively, and make its relative fixed moulding, thus as fixing and insulated enclosure.But this kind technology is difficult to exposed lamp base is coated (effect that promptly is difficult to reach sealing) fully, particularly two lamp bases are very fast by corrosion, cause its insulation breakdown even break phenomenon such as fall, thereby cause the inefficacy of lamp, the use that has a strong impact on product and life-span, remove this uniformity that also does not have its product appearance of person and be difficult to control, influence shortcomings such as outward appearance.

Summary of the invention

The objective of the invention is to overcome the deficiency of prior art; a kind of preparation method of LED lamp string is provided; can realize that in the manufacturing process of LED lamp string the mechanization mode comes the joint of sealing LED unit lamp base and lead; make the make efficiency of LED lamp string improve greatly; simultaneously; can realize two exposed lamp bases of LED unit and be sealed in the thermoplastic resin body fully with the junction of lead; so not only played electric insulation, but also the fully effect of seal protection, thereby prolonged the service life of LED lamp string and have aesthetic preferably.

The technical solution adopted for the present invention to solve the technical problems is: a kind of preparation method of LED lamp string comprises the steps:

A. the lamp base of each LED unit is weldingly fixed on together with corresponding lead the end of a thread respectively;

B. each LED unit is put into each time cavity of bed die respectively, when putting into, in the preceding hole of the rectangular rear boss of the recessed cavity rear end of the top reeve bed die of the lamp holder of LED unit, the tail end of lamp holder returns back to top at the middle raised line place of following cavity, makes the lamp holder of LED unit spacing between preceding hole and raised line by front and back;

C. lead the end of a thread that lamp base connected of each LED unit is stuck in the recess of rectangular front boss of following cavity front end of bed die, the junction of LED unit and LED unit and lead the end of a thread partly is contained in the following cavity of bed die;

D. with mold to being buckled in the top of bed die, matching between the rectangular rear boss of the rectangular groove of mold by the rear end and bed die, make corresponding one by one each time cavity at bed die of cavity on each of mold above; The front end of mold is resisted against the rear side of rectangular front boss of the front end of bed die, cavity and following cavity are encircled into can hold fully the LED unit with and the cavity of the junction of exposed lamp base and lead;

E. mold and bed die are fixed together;

F. inject thermoplastic resin adhesive by the set glue feeding opening of the bed die cavity that makes progress with the following cavity that cavity was encircled into, treat that thermoplastic resin adhesive is full of interior other space except that LED unit and lead the end of a thread thereof of cavity after, stop injecting glue;

G. after treating the thermoplastic resin adhesive cooling forming, open mold, from each time cavity of bed die, take out each the LED unit that is sealed with thermoplastic resin adhesive;

H. the thermoplastic resin colloid of each LED unit is modified processing, the LED unit of then each having been annotated packs into the thermoplastic resin sleeve pipe, after suitable heating plastic bushing is shunk and in the thermoplastic resin colloid of LED unit is coated on fully.

The invention has the beneficial effects as follows, owing to adopted the encapsulation process that realizes the LED unit to the mode of mould injecting glue, by the LED unit is put into by the last cavity of mold and bed die following cavity was encircled into can hold the cavity of LED unit and coupled lead the end of a thread fully, injecting glue in cavity then, make the thermoplastic resin colloid form sealing to two exposed lamp bases of LED unit and with the junction of lead, the effect of edge of drawing last breath electrifies again simultaneously, this technology had both improved the make efficiency of LED lamp string greatly, can prolong the service life of LED lamp string again and have aesthetic preferably.

Below in conjunction with drawings and Examples the present invention is described in further detail; But the preparation method of a kind of LED lamp string of the present invention is not limited to embodiment.

Description of drawings

Fig. 1 is an organigram of realizing the mould of the inventive method;

Fig. 2 is the organigram under the matched moulds state of realizing the mould of the inventive method;

Fig. 3 is the organigram of the mould (the upper die body upset upwards) of realization the inventive method;

Fig. 4 is the A portion enlarged diagram among Fig. 3;

Fig. 5 is the B portion enlarged diagram among Fig. 3.

The specific embodiment

Shown in accompanying drawing, the preparation method of a kind of LED lamp string of the present invention is to adopt following mould to make, and this mould comprises:

One bed die 1, its upper end alongst is provided with a plurality of following cavitys 2 that can put into the LED unit respectively side by side, the front end of following cavity 2 is provided with the rectangular front boss of alongst establishing 11, rectangular front boss 11 is provided with a plurality of and described cavity 2 corresponding recesses 111 down, the rear end of following cavity 2 is provided with the rectangular rear boss of alongst establishing 12, the front side of rectangular rear boss 12 is provided with a plurality of and described cavity 2 corresponding preceding holes 121 down, and the Lower Half in each preceding hole 121 links to each other with corresponding cavity 2 down respectively;

One can realize the mold 3 of matched moulds with bed die, the bottom of this mold 3 alongst is provided with a plurality of and the bed die 1 corresponding cavity 4 of going up side by side, should go up cavity 4 and described cavity 2 down be encircled into two exposed lamp bases that can hold the LED unit fully and with the cavity of the junction of lead, the rear end of last cavity 2 alongst is provided with the rectangular groove 31 of rectangular rear boss 12 insertions that adapt to bed die, and the front end of last cavity is pass-out forward.

Wherein:

Also be provided with a plurality of glue feeding openings 13 on the bed die 1 and be used to realize that glue feeding opening 13 is connected with following cavity 2 advances glue passage 14;

The number of glue feeding opening 13 is half of following cavity 2 numbers, and described glue feeding opening 13 is located at respectively between two following cavitys 2, and glue feeding opening 13 advances glue passage 14 by two and is connected with the following cavity 2 of both sides;

Following cavity 2 is divided into first cavity 21 that is matched with the diode lamp holder and second cavity 22 that is matched with the diode lamp base, described first cavity 21 links to each other with described preceding hole 121, be provided with the first spacing raised line 23 that can prevent that diode from moving forward between first cavity 21 and second cavity 22, this first spacing raised line 23 makes the spacing cavity place at first cavity 21 of LED;

Last cavity 4 is divided into the 3rd cavity 41 that is matched with the diode lamp holder and the 4th cavity 42 that is matched with the diode lamp base, and described the 3rd cavity 41 links to each other with described rectangular groove 31;

Second cavity 22 also is divided into the first fen chamber 221 that is used for realizing sealing the exposed lamp base of diode, the second fen chamber 222 that is used for realizing sealing lamp base and lead connecting part, this second fen chamber 222 is connected with the recess 111 of corresponding rectangular front boss 11, and the recess 111 of rectangular front boss 11 is used for realizing sealed guide the end of a thread;

The edge in second fen chamber 222 is respectively greater than the edge of first fen chamber 221, rectangular front boss recess 111;

The 4th cavity 42 also is divided into the 4th fen chamber 421 being used for realizing sealing the exposed lamp base of diode, be used for the 6th fen chamber 423 of realizing sealing the 5th fen chamber 422 of lamp base and lead connecting part and being used for realizing sealed guide the end of a thread;

The edge in the 5th fen chamber 422 is respectively greater than the edge in the 4th fen chamber 421, the 5th fen chamber 423;

Second fen chamber 222 and the cavity that chamber 422 was surrounded in the 5th minute make that formed colloid size is slightly larger than the size that other cavity surrounds behind the injecting glue, and its size matches with described sleeve pipe again, formed colloid can play the temporary fixed effect when the operation of cover sleeve pipe again more reliably to the sealing at LED lamp base and terminal place after its injecting glue was finished.

The preparation method of a kind of LED lamp string of the present invention comprises the steps:

B. each LED unit is put into each time cavity 2 of bed die 1 respectively, when putting into, in the preceding hole 121 of the rectangular rear boss 12 of following cavity 2 rear ends of the top reeve bed die 1 of the lamp holder of LED unit, the raised lines that the tail end of lamp holder returns back to top in the middle of following cavity 2 are the first spacing raised line, 23 places, make the lamp holder of LED unit spacing between preceding hole 121 and raised line 23 by front and back, be that whole lamp holder just is engaged in first cavity 21, the lamp base of LED unit and then corresponding in second cavity 22 with the joint of lead the end of a thread;

C. lead the end of a thread that lamp base connected of each LED unit is stuck in the recess 111 of rectangular front boss 11 of following cavity 2 front ends of bed die 1, the junction of LED unit and LED unit and lead the end of a thread partly is contained in the following cavity 2 of bed die, the junction that is LED unit and LED unit and lead the end of a thread is placed in the following cavity 2 of bed die, wherein, the exposed lamp base correspondence of diode is in first fen chamber 221, the diode lamp base is corresponding with the lead connecting part in second fen chamber 222, and the part lead behind lead the end of a thread and the end of a thread then is stuck in the recess 111 of rectangular front boss;

D. with 3 pairs of tops that are buckled in bed die 1 of mold, matching between the rectangular rear boss 12 of the rectangular groove 31 of mold 3 by the rear end and bed die 1, make corresponding one by one each time cavity 2 at bed die of cavity 4 on each of mold above; The front end of mold 3 is resisted against the rear side of rectangular front boss 11 of the front end of bed die, cavity 4 and following cavity 2 are encircled into can hold fully the LED unit with and the cavity of the junction of exposed lamp base and lead;

At this moment, the cavity that first cavity 21 of the 3rd cavity 41 of the last cavity of mold and the following cavity of bed die is surrounded is used for holding the lamp holder of diode, the cavity that the 4th cavity 42 of the last cavity of mold and second cavity 22 of the following cavity of bed die are surrounded be used for holding diode lamp base and with the joint of lead the end of a thread, and, first fen chamber 221 of the 4th fen chamber 421 of the 4th cavity of mold and second cavity of bed die incompatible exposed lamp base of diode that holds that matches, the incompatible joint that holds diode lamp base and lead the end of a thread that matches, second fen chamber 222 of the 5th fen chamber 422 of the 4th cavity of mold and second cavity of bed die, the 6th fen chamber 423 of the 4th cavity of mold and the recess 111 of the rectangular front boss 11 incompatible lead of being drawn that holds that matches;

E. mold 3 and bed die 1 are fixed together;

F. by the set glue feeding opening 13 of bed die 1 upwards cavity 4 inject thermoplastic resin adhesive with the cavity that following cavity 2 is encircled into, treat that thermoplastic resin adhesive is full of interior other space except that LED unit and lead the end of a thread thereof of cavity after, stop injecting glue; Then the thermoplastic resin colloid coats linking part and lead the end of a thread of diode exposed lamp base, diode lamp base and lead the end of a thread fully, thereby the linking part that makes diode expose lamp base, diode lamp base and lead the end of a thread is sealed in the colloid fully, thereby has realized the better seal effect;

G. after treating the thermoplastic resin adhesive cooling forming, open mold 3, from each time cavity 2 of bed die 1, take out each the LED unit that is sealed with thermoplastic resin adhesive;

H. the thermoplastic resin colloid of each LED unit is modified processing, then each LED unit that injecting glue is good is packed into the thermoplastic resin sleeve pipe, after suitable heating, plastic bushing is shunk and in the thermoplastic resin colloid of LED unit is coated on fully.

The foregoing description only is used for further specifying the preparation method of a kind of LED lamp string of the present invention; but the present invention is not limited to embodiment; every foundation technical spirit of the present invention all falls in the protection domain of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. the preparation method of a LED lamp string is characterized in that: comprise the steps:

E. mold and bed die are fixed together;