CN2180449Y - Injection moulding position device for plastic zipper - Google Patents

Abstract

The utility model relates to an injection molding positioning mechanism for a plastic zipper with an upper stopper, a bird claw and a lower block. The injection molding positioning mechanism comprises a feeding positioning device, the upper side of a feeding plate is superposed with a positioning plate, and the front end of the lower end of the feeding plate is provided with a fixing plate and is provided with a hole which is locked with a mould holder; an injection molding device, which is provided with an upper and a lower moulds, and each mould is respectively provided with the mould cavities of the upper stopper, the lower block and the bird claw. Both sides of the feeding plate are provided with concave chain grooves, the upper sides of the chain grooves at the front end of the positioning plate are respectively provided with positioning holes, and the inner part of each positioning hole is provided with a positioning ball. The upper side of the positioning ball then is contacted with a positioning end which is connected to the front end of the positioning rod of a micro-switch, and the front end of the positioning plate is provided with a press plate. The feeding plate and the positioning plate rise and fall through an air pressure rod, and the rise and the fall of the press plate and the upper mould are controlled by signals generated by having or not chain teeth.

Description

Injection moulding position device for plastic zipper

The utility model relate on the plastic fastener end, bird pawl and the ejection formation detent mechanism of retaining down.

The invention of slide fastener has changed people's life style, and provides people in life many convenient, especially on clothing, handbag and travelling bag, has more increased its convenience and security.

The formation of slide fastener be respectively to have sprocket in the limit in opposite directions with chain belt, and respectively this sprocket is identical shaped, and mutual embedding is arranged, again through slider of zipper fastener make the sprocket driving fit, and form closed state.Usually, classify from material, metal (aluminium, copper) is then arranged, nylon and plastics are, and use occasion is not slightly different yet, only there is no hiding the fact, plastic fastener is because of adopting shoot mode, so can performance to some extent on color.

With on the clothing especially before the jacket flap be example owing to must wear off, thus its be by two straps together with the sprocket person of separating, this " opening " (OPEN END) slide fastener that is so-called.And the opening part of its below, then on one side for inserting (PIN is commonly called as the bird pawl) slightly, another side then is the following retaining (BOX) of a box, when desiring drawing, then will the bird pawl inserts down retaining and will draw on the slider of zipper fastener, this is an occupation mode usual in people's daily life.

Retaining and bird pawl under known, the earliest for it with metal, then for it with shoot mode, the common point of its maximum then is to give ejaculation after cut-out again, and need with staff, thus there is the anomaly of specification shakiness to take place repeatly, therefore, once had to disclose a kind of " slide fastener chain belt positioner " Chinese patent 90209145.X number, made improvements.This patent is the slide fastener of locating preprocessing with stage clip and weight mode, and its a fly in the ointment is that to be to suppress area less, and stage clip is because of a shortcoming that re-uses flexible fatigue.

Therefore, the purpose of this utility model be to provide on a kind of improved plastic fastener end, bird pawl and retaining ejection formation detent mechanism down, this mechanism can exempt the indirect pressing mode that adopts spring, thus the locating effect when improving ejection formation.

According to the utility model, provide on a kind of plastic fastener end, bird pawl and the ejection formation detent mechanism of retaining down, it comprises:

One locating unit comprises a delivery sheet, its stacked location-plate in top, and its lower end front end is established a fixed head and is had hole and die holder is sealed;

One device for injection moulding is combined by a patrix and counterdie, and respectively have go up to end, the die cavity of retaining and bird pawl, and patrix down has that nib feed mouth passes through on one, and is provided with oil compression rod to drive the rise and fall of patrix;

It is characterized in that the key way that the delivery sheet both sides have a depression is ccontaining for sprocket, location-plate front end key way top respectively has a locating hole, its built-in place kick, and a termination, location that is linked to the backstay front end of microswitch is touched in its top, and end has a pressing plate before the location-plate, and delivery sheet and location-plate with atmospheric pressure pole with lifting, control the lifting of pressing plate and the lifting of patrix by the signal that is produced that has or not of sprocket.

For further disclosing concrete technology contents of the present utility model, at first see also accompanying drawing, wherein:

Fig. 1 is a schematic perspective view of the present utility model;

Fig. 2 is the schematic perspective view of the utility model locating unit;

Fig. 3 penetrates the schematic diagram of finished product for the utility model.

As shown in the figure, basically, ejection formation detent mechanism of the present utility model is combined by a locating unit 1 and a device for injection moulding 2.

Wherein locating unit 1 comprises a delivery sheet 11, and a location-plate 12 is put in its top, and a fixed head 13 is established in its place ahead, lower end, has hole on it for sealed fixing with the die holder of device for injection moulding 2, and its below then is a support 14.

This case differ from prior art person, be that delivery sheet 11 its both sides also respectively form a key way 111 for depression, its purpose is ccontaining for sprocket, makes two chains that separate when 12 of delivery sheet 11 and location-plates are current, must keep correct direction via falling in the key way 111 of sprocket.Simultaneously, two locating holes 121 are opened in front end key way 111 tops in location-plate 12, and respectively put a place kick 122 in it, simultaneously, the side is provided with termination 123, a location less than zipper sprocket thickness thereon, and with a positioning rod 124 interlocks on the microswitch 125 of location usefulness, and this microswitch 125 be connected to control circuit board and with after the running controlled automatically of the device for injection moulding 2 chatted.And the control of this microswitch 125, be when last tooth of sprocket by and arrive when not having the chain toothed portion, then diminish immediately because of thickness, place kick 122 is sunk, termination, location 123 descends, make backstay 124 affect microswitch 125 and send first signal, and move on when chain belt, first tooth touches place kick 122 and when making it to raise again, risen in termination, location 123, and backstay 124 is descended, send second signal again, and the action of penetrating.

In addition, delivery sheet 11 and location-plate 12 are with respect between the support 14, then has an atmospheric pressure pole, make it can be controlled and make delivery sheet 11 and location-plate 12 rise simultaneously or descend, and when descending, chain belt be suppressed and be located to end clamp plate 126 before the location-plate 12 just can, unlikely generation displacement when it is penetrated.

It mainly is made up of device for injection moulding 2 patrix 21 and a counterdie 22, wherein the bottom of patrix 21 has upper mould cave 211(and fails to illustrate because of projection angle relation), and pass through the last nib 213 of patrix 21 via a material mouth 212, and patrix 21 is to be the power of lifting with an oil compression rod, drives then to control via the circuit board sequencing.Simultaneously, must align with counterdie 22 for making it, so some patrix posts 214 are established in both sides, this all is a known technology, does not intend giving unnecessary details.

It also is known person for a counterdie 22, be to support by die holder, and following die cavity 221 is corresponding to aforesaid upper mould cave 211, with for making the unlikely displacement of sprocket, respectively be recessed to form the locating slot 222 of a straight line on the die face of both sides, simultaneously, it also is provided with intercalation and aligned position that mould post 214 is kept supplying in some counterdie post holes 223 corresponding to patrix post 214 places.

Conjunction with figs. more please, the utility model is when running, at first spur, and place kick 122 this moment touches sprocket, continues pulling but work as chain belt when two chain belts are placed in respectively in the key way 111 and towards device for injection moulding 2 directions with sprocket, and last tooth of this section that arrives and when entering anodontia section, then place kick 122 descends suddenly, and termination 123, location is dropped thereupon, and backstay 124 is risen, and send first signal, and put first tooth of running into hypomere once more when chain continues to draw forward, then move in the place kick 122 again, and make termination 123, location with on move, backstay 124 is descended, and then send second signal, at this moment, delivery sheet 11 presses down together with location-plate 12, and make pressing plate 126 compactings of front end live chain belt, simultaneously, patrix 21 presses down, and material mouth 212 is incident upon down die cavity 221 with injection material, end and go up, the moulding of following retaining and bird pawl, as shown in Figure 3, going up after this moulding ended A and belonged to the preceding article slide fastener, belongs to next bar person and keep off B and bird pawl C down, after cutting off, be finished product.

After ejaculation was finished, patrix 21 moved up again, this moment delivery sheet 11 together with moving on the location-plate 12, and chain belt spurs forward, and carries out another work cycle.

So, via the mode of the utility model place kick 122 and termination 123, location, it is except that the shortcoming that can exempt known indirect mode that sees through spring and elastic fatigue, and the compacting of pressing plate 126 is certain, also can improve the locating effect when penetrating, the unprecedented mechanism design of real genus.

This case those disclosed herein are a kind of of preferred embodiment, and Ju Bu change or modification and come from the technological thought of this case and be easy to the person of knowing by inference by the people who has the knack of this technology such as all do not break away from the patent protection category of this case.

Claims (1)

1, the ejection formation detent mechanism that end on a kind of plastic fastener, the bird pawl keeps off under reaching, it comprises:

One locating unit comprises a delivery sheet, its stacked location-plate in top, and its lower end front end is established a fixed head and is had hole and die holder is sealed;

One device for injection moulding is combined by a patrix and counterdie, and respectively have go up to end, the die cavity of retaining and bird pawl, and patrix down has that nib feed mouth passes through on one, and is provided with oil compression rod to drive the rise and fall of patrix;

It is characterized in that the key way that the delivery sheet both sides have a depression is ccontaining for sprocket, location-plate front end key way top respectively has a locating hole, its built-in place kick, and a termination, location that is linked to the backstay front end of microswitch is touched in its top, and end has a pressing plate before the location-plate, and delivery sheet and location-plate with atmospheric pressure pole with lifting, control the lifting of pressing plate and the lifting of patrix by the signal that is produced that has or not of sprocket.

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