CN202656422U

CN202656422U - Plastic sealing structure applied in side plastic-feeding thermal nozzle

Info

Publication number: CN202656422U
Application number: CN 201220228257
Authority: CN
Inventors: 阮军平
Original assignee: DONGGUAN REHENG INJECTION TECHNOLOGY Co Ltd
Current assignee: DONGGUAN REHENG INJECTION TECHNOLOGY Co Ltd
Priority date: 2012-05-18
Filing date: 2012-05-18
Publication date: 2013-01-09
Anticipated expiration: 2022-05-18

Abstract

The utility model discloses a plastic sealing structure applied in a side plastic-feeding thermal nozzle. The plastic sealing structure comprises a thermal nozzle body, a nozzle core, a plastic sealing column and a fixed plate, wherein a plastic runner in the vertical direction is arranged in the thermal nozzle body, a cylindrical containing cavity is arranged at the bottom of the thermal nozzle body along the axial direction of the plastic runner, and the plastic runner is communicated with the containing cavity; an arch-shaped part of the nozzle core and the plastic sealing column are arranged in the containing cavity in a sealing fit manner, and the nozzle tip part of the nozzle core penetrates out from the side wall of the thermal nozzle body; the fixed plate is fixedly arranged on the bottom wall of the thermal nozzle body so as to fasten and seal the plastic sealing column into the containing cavity; and the arch-shaped part of the nozzle core and an arch-shaped gap of the plastic sealing column are arranged in the cylindrical containing cavity of the thermal nozzle body in the sealing fit manner, no plastic leakage of a product can be ensured only by ensuring the fit tolerance between the arch-shaped part of the nozzle core and the plastic sealing column, the difficulty that the structure of the original square thermal nozzle for a side plastic feeding mode needs six planes for plastic sealing can be solved, and the machining difficulty and the plastic leakage probability can be greatly reduced.

Description

Being applied to side advances the heat of glue and chews glue sealing structure

[technical field]

The utility model relates to a kind of injection forming mold Hot runner Technology, and particularly a kind of side that is applied to is advanced the heat of glue and chewed glue sealing structure.

[background technology]

TOP-TIP is a kind of plastic mould parts at present commonly used, and it is with respect to common flow passage, have simplified control, molding cycle short, save material, the plurality of advantages such as the goods cost is low, product quality is high.Along with the raising of client to the product surface quality requirement, some plasthetics surface has not allowed the injection moulding vestige, medical industry particularly, do not allow the jagged flaw of Denging such as the injector syringe surface, make the side into and advance the glue injection moulding with regard to needing people that the glue injection moulding is advanced in common front like this, advance the glue mode so chew the side of structure with regard to hot flow path square heat having occurred, to advance rubber seal glue be a great problem but square heat is chewed side, main sealing mode is that core is made square and heat is chewed the body sealing with chewing in the market, sealing face so just having occurred is six planes, as long as appearring leaking in one of them face, glue will make the die cavity leakage full, so just very high to requirement on machining accuracy, manufacturing cost is increased.

[summary of the invention]

The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of side that is applied to advance the heat of glue and chew glue sealing structure, and it can reduce the probability that mould leaks glue.

The purpose of this utility model is achieved in that it comprises that heat is chewed body, chewed core, sealing post and fixed head, the inside that described heat is chewed body is shaped with the plastic passages of vertical direction, the bottom is provided with columniform container cavity along the axial direction of plastic passages, and plastic passages is communicated with container cavity; The described core of chewing has a bow type section and chews the tip, chews the bending curve center that the tip is arranged at bow type section, and the bow type section of chewing core is stuck in the container cavity, chews the sidewall of chewing body by heat in the tip and passes; Described sealing post be one with the suitable cylinder of container cavity, its upper end has the breach identical with bow type section, closely cooperates with the bow type section of chewing core in the time of in the container cavity of packing into; Fixed head is screwed and is installed on heat and chews on the diapire of body, with sealing post fit sealing in heat is chewed the container cavity of body; Be provided with respectively with plastic passages in the described sealing post and chew the runner that core is communicated with;

In the said structure, also include cast gate department, described cast gate department is arranged at the sidewall that heat is chewed body, and that chews core chews the tip by passing in the cast gate department;

In the said structure, be communicated with two under described each bar plastic passages and chew core, two tips of chewing of chewing core are piercing in respectively the two side that heat is chewed body.

Compared with prior art, the beneficial effects of the utility model are: chew in the cylindrical container cavity of body with the mutually close-fitting heat that is installed on of the bow type breach of sealing post by the bow type section of chewing on the core end, as long as can guarantee to chew the bow type section of core and the fit tolerance between the sealing post, just can guarantee that product does not leak glue, solve old side and advanced the difficult problem that the square heat of glue is chewed six plane sealings of structure needs, and greatly reduced the difficulty of processing and the probability of leakage glue; Cast gate department is set in chews the chewing outside the tip of core, and chews body with heat and be threaded, and can further be fixed chewing core, and strengthen chewing the intensity of core.

[description of drawings]

Fig. 1 is structural representation of the present utility model;

Fig. 2 is structure cutaway view of the present utility model.

[specific embodiment]

Below in conjunction with the drawings and the specific embodiments the utility model is described further:

As depicted in figs. 1 and 2, the side that is applied to of the present utility model is advanced the heat of glue and is chewed glue sealing structure, it comprises that heat is chewed body 1, chewed core 3, sealing post 2 and fixed head 4, the inside that described heat is chewed body 1 is shaped with the plastic passages 11 of many vertical directions, the bottom is provided with columniform container cavity 12 along the axial direction of plastic passages 11, plastic passages 11 is communicated with container cavity 12, and both axial lines coexist on the line; Be equipped with two in the container cavity 12 of described every plastic passages 11 correspondences and chew core 3, the described core 3 of chewing has a bow type section 32 and chews tip 31, chew in the bending curve that tip 31 is arranged at bow type section 32 in the heart, when core 3 is chewed in installation, the bow type section 32 of chewing core is stuck in the container cavity 12, and two two lateral walls of chewing body 1 by heat in tip 31 of chewing of chewing core 3 pass; Described sealing post 2 be one with the suitable cylinder of container cavity 12, its upper end has two symmetrical breach 21, this breach 21 is identical with bow type section 32 size and shapes of chewing core, is fit into container cavity 12 when interior and chews core 3 to closely cooperate; Fixed head 4 is fixedly installed in heat by screw 41 and chews on the diapire of body 1, with sealing post 2 fit sealings in heat is chewed the container cavity 12 of body 1; Be provided with respectively in the described sealing post 2 and chew the runner that core 12 is communicated with plastic passages 11 and two, described two inner flow passage 34 horizontal linears of chewing core 3 are communicated with, and advance the glue injection mo(u)lding by the side that realizes product that is horizontally disposed with of chewing core 3.The utility model also includes cast gate department 5, described cast gate department 5 is arranged at the sidewall that heat is chewed body 1, and chews body 1 with heat and be threaded, and that chews core 3 chews tip 31 by passing in the cast gate department 5, cast gate department 5 further is fixed chewing core 3, and has strengthened chewing the intensity of core 3.

The utility model when mounted, to chew first core 3 is installed to heat and chews in the container cavity 12 of body, again sealing post 2 is fit in the container cavity 12 and chews core 3 and match, being fixedly mounted on heat by fixed head 4 afterwards chews on the diapire of body 1 and seals fixing to sealing post 2, at last cast gate department 5 is enclosed within and chews the chewing outside the tip 31 of core 3, and to chew body 1 spiral shell solid with heat.Heat after installing chewed be fit in the mould, during injection moulding, the upper end that molten plastic is chewed body 1 by heat enters in the plastic passages 11, chew core 3 inner flow passages 34 through what the runners in the sealing post 2 entered horizontal direction, entered again the die cavity of product by the outlet 33 of chewing core 3, finish the side of product is advanced the glue injection moulding process thereby advance glue by the side of product.

The according to the above description announcement of book and instruction, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the specific embodiment that discloses and describe above the utility model is not limited to also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not consist of any restriction to the utility model just for convenience of description.

Claims

1. one kind is applied to side and advances the heat of glue and chew glue sealing structure, it is characterized in that: comprise that heat is chewed body, chewed core, sealing post and fixed head, the inside that described heat is chewed body is shaped with the plastic passages of vertical direction, the bottom is provided with columniform container cavity along the axial direction of plastic passages, and plastic passages is communicated with container cavity; The described core of chewing has a bow type section and chews the tip, chews the bending curve center that the tip is arranged at bow type section, and the bow type section of chewing core is stuck in the container cavity, chews the sidewall of chewing body by heat in the tip and passes; Described sealing post be one with the suitable cylinder of container cavity, its upper end has the breach identical with bow type section, in the time of in the container cavity of packing into chew core bow type section and closely cooperate; Fixed head is screwed and is installed on heat and chews on the diapire of body, with sealing post fit sealing in heat is chewed the container cavity of body; Be provided with respectively with plastic passages in the described sealing post and chew the runner that core is communicated with.

2. the side that is applied to according to claim 1 is advanced the heat of glue and chewed glue sealing structure, it is characterized in that: also include cast gate department, described cast gate department is arranged at the sidewall that heat is chewed body, and that chews core chews the tip by passing in the cast gate department.

3. the side that is applied to according to claim 1 is advanced the heat of glue and is chewed glue sealing structure, and it is characterized in that: be communicated with two under described each bar plastic passages and chew core, two tips of chewing of chewing core are piercing in respectively the two side that heat is chewed body.