CN106363889A

CN106363889A - Plastic pipe mold with supporting and cooling structures

Info

Publication number: CN106363889A
Application number: CN201610881066.5A
Authority: CN
Inventors: 唐丽伟
Original assignee: Tianjin Sheng Xinjiaye Technology Co Ltd
Current assignee: Tianjin Sheng Xinjiaye Technology Co Ltd
Priority date: 2016-10-09
Filing date: 2016-10-09
Publication date: 2017-02-01

Abstract

The invention provides a plastic pipe mold with supporting and cooling structures, and belongs to the technical field of plastic pipe extruding machines. The mold comprises an outer mold, a core mold and the supporting structure; the core mold is fixed at the center part of an inner cavity of the outer mold to form an annular molten material runner; a through cooling pipe is arranged at the solid part of the core mold; the external end of the core mold cooling pipe is connected with a supporting body structure; the supporting body structure is a column structure with a hollow cooling pipe; multiple supporting bodies form a umbrella skeleton shape; the outer surfaces of free ends of the support bodies are contacted with the wall surfaces of inner cavities of extruded plastic pipes to achieve a supporting effect on plastic hoses; and the internal end of the core mold cooling pipe penetrates through the cavity wall of the outer mold to connect with a cooling source. The plastic pipe mold can support extruded plastic hose structures, prevents the defects of nonuniform wall thicknesses of plastic pipes and shape deformation, can cool inside after pipe molding, and accelerates the cooling and curing speed of the plastic pipes.

Description

There is the plastic pipe mold supporting with cooling structure

Technical field

The invention belongs to plastic pipe extruder technical field, especially relate to a kind of can be to the plastics in extrusion The die head that pipe is supported and cools down.

Background technology

Plastics extrusion die is the mould for forming plastic pipe, is arranged on extruding machine outfan, is producing plastic pipe When, need the mould being formed using mouth mould and core combination to be extruded, mouth mould controls the external shape of plastic pipe, core control The interior shape of tubulation material, because plastic tube is not cooled down immediately after plastic extrusion, and because of gravity, plastic tube is extruded When in radial directions easily deformation even the even problem of wall unevenness occurs, the structural behaviour ultimately resulting in homogeneous tube is poor.

Content of the invention

In view of this, the invention is directed to a kind of plastic extrusion die having supporting construction and having cooling structure Tool, supports plastic flexible pipe structure during extrusion, is cooled down simultaneously inside pipe, accelerates the cooling and solidifying speed of plastic tube.

For reaching above-mentioned purpose, the technical scheme of the invention is achieved in that

A kind of have the plastic pipe mold supporting cooling structure, and including external mold, core and supporting construction, described core passes through Core connecting portion is fixed on external mold lumen centers portion, forms the runner of annular melting charge, there is the cooling tube of insertion in core entity portion Road, the external end of core cooling pipe is connected with supportive body structure, and the free end of supportive body structure is connected with a fastener, institute Stating supportive body structure is to have the column structure of hollow cooling pipe, and some supportive bodies form umbrella frame shape, a fastener Internal cavity is communicated with supportive body cavity, and a fastener outer surface is contacted with the plastic tube inner chamber wall of extrusion, and plastic flexible pipe is risen To supporting role, the cooling pipe that in described core entity portion, through cooling pipe connects at the built-in end of external mold passes through outer Mould wall cooling source outside with external mold connects.

Further, the non-contact portion on described fastener is porous portion, and the cooling water in a fastener cavity can be made to spray, In plastics tube cavity, the plastic tube of extrusion is cooled down.

Further, it is connected with buffer unit between described fastener, buffer unit provides outside support for a fastener Power, buffer unit can be arranged to the screw rod of adjustable length and the structure of screw sleeve cooperation.

With respect to prior art, the plastic pipe mold described in the invention has a following advantage:

The invention can support plastic flexible pipe structure during extrusion, prevents plastic tube wall thickness irregular, shape distortion Defect, internally can be cooled down after pipe molding, accelerate the cooling and solidifying speed of plastic tube.

Brief description

The accompanying drawing constituting the part of the invention is used for providing the invention is further understood, and the present invention creates The schematic description and description made is used for explaining the invention, does not constitute the improper restriction to the invention.? In accompanying drawing:

Fig. 1 is the plastic pipe mold schematic diagram described in the invention embodiment.

Description of reference numerals:

100- external mold；200- core；300- buffer unit；400- plastic tube；201- core connecting portion；1020- annular flow Road；2010- core connecting portion through hole；2000- props up fastener；2001- supportive body；2002- core cooling pipe；2003- cools down The mouth of pipe.

Specific embodiment

It should be noted that in the case of not conflicting, the embodiment in the invention and the feature in embodiment can To be mutually combined.

In the description of the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " on ", D score, The orientation of instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " or position relationship are Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description, rather than instruction Or the hint device of indication or element must have specific orientation, with specific azimuth configuration and operation, be not therefore understood that It is the restriction to the invention.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating Or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately It is described, " multiple " are meant that two or more.

In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition State concrete meaning in the invention for the term.

To describe the invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.

In conjunction with shown in Fig. 1, a kind of have the plastic pipe mold supporting cooling structure, includes external mold 100, core 200 and props up Support structure, described core 200 is fixed on external mold 100 lumen centers portion by core connecting portion 201, forms the ring of annular melting charge Shape runner 1020, there is the cooling pipe of insertion in core 200 entity portion, and the external end of core cooling pipe 2002 is connected with support master Body 2001, the free end of supportive body 2001 is connected with a fastener 2000, and fastener (2000) profile is in spherical shape, described support Main body 2001 is to have the column structure of hollow cooling pipe, the umbrella frame shape that some supportive body 2001 compositions are opened, Fastener 2000 internal cavity is communicated with supportive body 2001 cavity, plastic tube 400 internal chamber wall of fastener 2000 outer surface and extrusion Face contacts, and plastic tube 400 is played a supporting role, in described core 200 entity portion, through core cooling pipe 2002 exists The cooling pipe that the built-in end of external mold 100 connects passes through cooling pipe orifice 2003 and the external mold 100 outside cooling source of external mold 100 cavity wall Connect.Non-contact portion on described fastener 2000 is porous portion, the cooling water in fastener 2000 cavity can be made to spray, moulding Expects pipe 400 inner chamber cools down to the plastic tube 400 of extrusion.It is connected with buffer unit 300, buffering between described fastener 2000 Part 300 provides outside support force for a fastener 2000, and buffer unit 300 can be arranged to screw rod and the spiral shell of adjustable length The structure of rod set cooperation, may also be employed pressurized spring structure.

The work process of plastic pipe mold: it is in plastic tube that plastic molten melt material is extruded from annular channel 1020, has pressurized bullet The mechanism of spring or adjustable screw rod and screw sleeve cooperation is that a fastener 2000 is provided out support force to plastic pipe inner wall, supports Power is less than the internal stress of plastic tube 400, it is to avoid support force is crossed senior general's plastic tube 400 and supportted deformation of rising, and cooling water is from cooling tube simultaneously Mouth 2003 inflow, flows to supportive body 2001 through core cooling pipe 2002, then sprays from the loose structure portion of a fastener 2000, Thus realizing inside plastic tube 400, it being cooled down, on whole production line, the free end position of plastic tube 400 extrusion Less than extruding end, so that cooling water freely flows out, after entering drying section, bake drying regime inside plastic tube 400, Described mould is prevented from plastic tube and occurs that thickness is irregular or deformation defect leads to follow closely going out of the fabrication errors such as its pressure ripple Existing.

The foregoing is only the preferred embodiment of the invention, not in order to limit the invention, all this Within the spirit of innovation and creation and principle, any modification, equivalent substitution and improvement made etc., should be included in the invention Protection domain within.

Claims

1. a kind of plastic pipe mold it is characterised in that: include external mold (100), core (200) and supporting construction, described core (200) external mold (100) lumen centers portion, core (200) and external mold (100) coaxial line are fixed on by core connecting portion (201), Form the annular channel (1020) of circulation melting charge, there are the core cooling pipe (2002) of insertion, core in core (200) entity portion The external end of cooling pipe (2002) is connected with supportive body (2001), and supportive body (2001) is the cooling pipe with hollow Column structure, the umbrella frame construction that some supportive bodies (2001) composition struts, the free end of described supporter (2001) with Plastic tube (400) the inner chamber wall contact of extrusion, supports the plastic tube (400) of extrusion, supportive body (2001) is provided with some For spraying the perforate of cooling water, the cooling tube that built-in end in external mold (100) for the described core cooling pipe (2002) connects Road passes through the cooling pipe orifice (2003) of external mold (100) cavity wall cooling source outside with external mold (100) to connect.

2. a kind of plastic pipe mold according to claim 1 it is characterised in that: described core connecting portion (201) be shaft-like Structure, core (200) is fixed on external mold (100) internal by least two.

3. a kind of plastic pipe mold according to claim 1 it is characterised in that: described core connecting portion (201) be disk Shape structural member, the inner of described core (200) is fixed at disc centre, and disc structure central periphery has for melting charge circulation Hole, the neighboring of disc structure is fixed on external mold (100) inwall.

4. a kind of plastic pipe mold according to claim 1 it is characterised in that: the free end of described supportive body (2001) It is also associated with a fastener (2000), described fastener (2000) profile is in spherical shape, is cavity in described fastener (2000), and Communicate with supportive body (2001) cavity, fastener (2000) outer surface is contacted with plastic tube (400) the inner chamber wall of extrusion, Support plastic tube (400).

5. a kind of plastic pipe mold according to claim 4 it is characterised in that: described with plastic tube (400) noncontact A fastener (2000) in portion has hole for water spraying.

6. a kind of plastic pipe mold according to claim 5 it is characterised in that: be connected between described fastener (2000) Buffer unit (300), buffer unit (300) is the structure of adjustable in length, and buffer unit (300) is screw rod and screw sleeve cooperation Structure or pressured state spring structure.