CN201361967Y

CN201361967Y - Wire-drawing preventing nozzle tip

Info

Publication number: CN201361967Y
Application number: CN 200920145462
Authority: CN
Inventors: 李象烈
Original assignee: Yudo Suzhou Hot Runner Systems Co Ltd
Current assignee: Yudo Suzhou Hot Runner Systems Co Ltd
Priority date: 2009-03-24
Filing date: 2009-03-24
Publication date: 2009-12-16
Anticipated expiration: 2019-03-24

Abstract

The utility model relates to a wire-drawing preventing nozzle tip comprising an outer nozzle tip. An inner nozzle tip is cooperatively arranged in a hollow runner of the outer nozzle tip. One end of the inner nozzle tip is a conical tip extending out of a pouring gate end of the outer nozzle tip. A feeding end of the inner nozzle tip is also provided with an incline for buffering pressure. When being separated from a mould, by means of point contact, the wire-drawing preventing nozzle tip can effectively avoid the phenomenon of wire drawing caused by surface contact, thereby improving the work efficiency and ensuring the work quality.

Description

Anti-wire drawing is sharp-tongued

Technical field

The utility model relates to TOP-TIP, especially relates to the sharp-tongued of TOP-TIP.

Background technology

The injection mold that generally adopts in the injection moulding industry at present is the HOT RUNNER INJECTION MOULD tool, HOT RUNNER INJECTION MOULD tool comparison common die, plastic cement products quality by the TOP-TIP injection moulding is higher, and economize in raw materials, can enhance productivity, the automaticity advantages of higher. such as open big mouth of a river TOP-TIP, the needle valve TOP-TIP all can be realized the production efficient, high-quality, that automaticity is high.But also there is certain defective in it.Such as the BALA TOP-TIP, referring to Fig. 1, Fig. 2, sharp-tongued 10 screw locks can be the large tracts of land contact because its cast gate of sharp-tongued 10 11 contacts with the product pattern with reference to prior art on hot mouth body (not shown), and in its sharp-tongued runner 12, do not cushion the setting of injection raw material pressure, when the product pattern separates with TOP-TIP when the product injection moulding contacts, be easy to serious wire drawing phenomenon occur at sharp-tongued cast gate 11 places, the wire drawing phenomenon seriously can influence next pouring practice.

Summary of the invention

It is sharp-tongued that the technical problems to be solved in the utility model provides a kind of anti-wire drawing, and the face contact when sharp-tongued cast gate is separated with the product pattern changes a contact into, avoided serious wire drawing phenomenon to take place, and also improved the operation quality when having improved operating efficiency.

For solving the problems of the technologies described above, the technical scheme that the utility model provides is that a kind of anti-wire drawing is sharp-tongued, it comprises that one is outer sharp-tongued, and a described outer sharp-tongued end that is shaped as the hollow duct with perforation is conical tubular, and described conical end is described outer sharp-tongued gate end; It is characterized in that in the hollow duct sharp-tongued outside described also cooperating be equipped with one in sharp-tongued, described in a sharp-tongued end be conical tip, described conical tip is stretched out outside the described sharp-tongued outward gate end.

Offer screw thread on the described outer sharp-tongued periphery wall.

The sharp-tongued fusiform cylinder that comprises in described, a described cylindrical tip is a conical tip; Be formed with profile and the internal diameter and the described outer identical socket of sharp-tongued non-gate end with certain altitude near the perisporium periphery of described cylinder one end, the runner that can supply raw material to pass through is arranged between described socket and described cylinder.

Be connected by the support arm one that is width of cloth strip between sharp-tongued socket and cylinder in described, be formed with the inclined plane of available buffer supplied materials pressure at the supplied materials end of described support arm.

The beneficial effects of the utility model are as follows:

Adopted in being provided with in the sharp-tongued outside runner sharp-tonguedly, a sharp-tongued elongate tip is stretched out outside the outer sharp-tongued cast gate in allowing.When product pattern separated demolding is finished in injection moulding, owing to make to be a contact into, therefore almost avoided the wire drawing phenomenon by the face contact, improved product quality, improved operating efficiency;

The sharp-tongued pressure buffer inclined-plane that increases above supplied materials in adopting, when product pattern separated demolding, the inclined-plane in the runner can cushion the pressure that the injection machine transmission comes, and more effectively further avoids taking place the wire drawing phenomenon.

Description of drawings

Fig. 1 prior art vertical profile vertical profile schematic diagram

Fig. 2 prior art plan structure schematic diagram

Fig. 3 the utility model vertical profile structural representation

Fig. 4 the utility model plan structure schematic diagram

The specific embodiment

Lift below a preferred embodiment and in conjunction with graphic the utility model is specifically described as follows: referring to Fig. 3, Fig. 4, anti-wire drawing of the present utility model is sharp-tongued to comprise outer sharp-tongued 20, interior sharp-tongued 30; Wherein:

Outer sharp-tongued 20, its end that is shaped as the hollow duct 21 with perforation is conical tubular, is cast gate 22 at the runner mouth of this taper shape one end, and injection raw material enters into the product pattern by cast gate 22 again by runner 21 and carries out the product injection moulding; Form screw thread on outer sharp-tongued 20 perisporium near gate end 23, by this screw thread, outer sharp-tongued 20 screw locks are fixed on the hot mouth body (not shown), and outer sharp-tongued 20 runner 21 is connected with the runner of hot mouth body;

Interior sharp-tongued 30, comprise a fusiform cylinder 31, the length of this cylinder 31 is longer than outer sharp-tongued 20 length, the internal diameter of the runner 21 of maximum outside diameter ratio outer sharp-tongued 20 is little, its two ends (32,33) be taper shape, and most advanced and sophisticated 32 taper shape is not only thin but also long, this is again carefully by the diameter of long conical tip 32 internal diameter less than outer sharp-tongued 20 cast gate 22, when cast gate 22 is passed at this tip 32 and reach outside the cast gate 22 certain distance, it can not block cast gate 22, that is to say that injection raw material can also be injected into by cast gate 22 and carried out injection molding operation in the product pattern this moment; Be formed with one in perisporium periphery and have certain altitude socket 34 near described cylinder 31 1 ends 33, this socket 34 connects as one with cylinder 31 by two or more support arms 35, between cylinder 31 and socket 34, separate the two or more runners 38 that supply injection raw material to pass through that have along the perforation of cylinder 31 length directions by support arm 35, this socket 34 has the identical barrel of profile and internal diameter and outer sharp-tongued 20 non-gate end 24, when the end face machinery of socket 34 end faces and non-gate end 24 closely cooperated, the inner runner 21 with outer sharp-tongued 20 of the hollow of socket 34 was communicated with; Support arm 35 equally links to each other with the inwall of socket 34 from the periphery of cylinder 31 like spoke, it has certain thickness, supplied materials end 36 along support arm 35, also promptly contact injection raw material one end at first, direction along the injection raw material runner, on two walls of support arm 35, form inclined-plane 37, when injection raw material is flowed through runner 38, can be by the pressure of inclined-plane 37 buffering injection raw materials, reduce the impact that injection raw material pressure causes support arm, also by compensator or trimmer pressure, the pressure that sharp-tongued interior injection raw material outwards flows when reducing product pattern separated demolding reduces the wire drawing phenomenon; When assembling, interior sharp-tongued 30 socket 34 closely cooperates with outer sharp-tongued 20 non-gate end 24, be fixed on the hot mouth body by outer sharp-tongued 20 screw locks, in sharp-tongued 30 cylinder 31 along outside the axis of sharp-tongued 20 runner 21 pass runner 21, and stretch out outside outer sharp-tongued 20 the cast gate 22 at its tip 32, and sharp-tongued 30 cylinder 31 and outer sharp-tongued 20 21 of runners are keeping enough flow channel spaces and enter runner 21 by runner 38 and enter the product pattern by cast gate 22 again and carry out injection molding operation to satisfy injection raw material in this;

Claims

1. an anti-wire drawing is sharp-tongued, and it comprises that one is outer sharp-tongued, and a described outer sharp-tongued end that is shaped as the hollow duct with perforation is conical tubular, and described conical end is described outer sharp-tongued gate end; It is characterized in that in the hollow duct sharp-tongued outside described also cooperating be equipped with one in sharp-tongued, described in a sharp-tongued end be conical tip, described conical tip is stretched out outside the described sharp-tongued outward gate end.

2. anti-wire drawing according to claim 1 is sharp-tongued, it is characterized in that offering screw thread on the described outer sharp-tongued periphery wall.

3. anti-wire drawing according to claim 1 is sharp-tongued, it is characterized in that the described interior sharp-tongued fusiform cylinder that comprises, a described cylindrical tip is a conical tip; Be formed with profile and the internal diameter and the described outer identical socket of sharp-tongued non-gate end with certain altitude near the perisporium periphery of described cylinder one end, the runner that can supply raw material to pass through is arranged between described socket and described cylinder.

4. anti-wire drawing according to claim 3 is sharp-tongued, it is characterized in that being connected by the support arm one that is width of cloth strip between socket sharp-tongued in described and cylinder, is formed with the inclined plane of available buffer supplied materials pressure at the supplied materials end of described support arm.