CN202388770U - Support combined die provided with bright-drawn sleeve on plastic tube extruder - Google Patents

Abstract

The utility model discloses a support combined die provided with a bright-drawn sleeve on a plastic tube extruder. The support combined die comprises a die and a mandril, wherein the outlet end surface of the mandril is longer than the outlet end surface of the die, a refrigerant cavity is arranged at the outlet end of the die, an isolation groove is formed at one side of the refrigerant cavity, the bright-drawn sleeve made from polytetrafluoroethylene is arranged in the isolation groove, and a support section M is formed between the outlet end surface of the die and a sizing sleeve; and the outlet end surface of the mandril is located in the sizing sleeve, and the mandril and the sizing sleeve form a superposed section L. The support combined die is obviously increased in production speed and greatly raised in finished product rate on the premise of no change on the original production process, equipment and raw material prescription; moreover, the produced product is good in flexibility, high in compression strength, as well as smooth in the outer wall and good in brightness due to the elimination of burring and bulging.

Description

A kind of plastic tube extruder is provided with the supporting assembling die of bright-drawn sheath

Technical field

The utility model relates to makes the plastic extruder that plastic pipe uses, and is specifically related to the supporting assembling die that a kind of plastic tube extruder is provided with bright-drawn sheath.

Background technology

In recent years, just obtaining wideling popularize development and use in China with the thermoplastic of synthetic materials such as polyvinyl chloride resin, its process equipment and processing technology are just progressively improved and raising.Especially aspect the plastic conduit goods, novel plastics such as PE, PVC, PPR just substitute the virgin metal pipeline rapidly with its remarkable advantage.Along with the raising of plastic extruder power, and add the regenerated plastics micelle in the composition of raw materials of goods, to the extruding pipe material surface smoothness of extruder, stability proposes higher requirement in process of production, and the rate that manufactures a finished product also needs to improve.

Existing plastic extruder, the mouth mould of its extrusion die port of export is a metal inner surface, and surface smoothness is relatively poor, and coefficient of friction is also bigger, will directly have influence on the surface smoothness of plastic conduit like this.The extrusion die port of export is outer concordant basically with the end face of plug in addition, and a mouthful mould also is referred to as external mold, and plug also is referred to as internal mold; In the production process of working continuously; Transition distance between extrusion die discharging opening and the calibration sleeve charging aperture is generally 20 centimetres; The direct calibration sleeve that is arranged in the cold water about 25 ℃ that gets into was finalized the design rapidly after about 200 ℃ the high temperature reproduced goods plastic pipe that extrusion die is extruded was gone through the transition distance about 20 centimetres; Because of temperature contrast is too big, plastic products be easy to generate stress concentration, the product embrittlement, pliability is poor, density is low, intensity is low; When calibration sleeve vacuumized, the through hole that the sizing jacket wall is provided with made the outer wall of the tubing bag that fluffed easily, and it is bright and clean that outer wall is owed; Main is along with in the composition of raw materials of goods, adding regenerated plastics, inevitably containing a spot of impurity in the regenerated plastics, when the tube material and tube wall of making is thin; Impurity can produce aperture on the tube wall of high temperature reproduced goods tubing, make to get into air in the pipe, owing to do not support in the pipe; This section tubing gets into calibration sleeve, can be under vacuum action that its suction is flat, thus between extrusion die discharging opening and calibration sleeve charging aperture, form windrow; Produce waste product,, cause production efficiency low although the waste product that produces in the production process can be recycled, skill is gone into production link again; Speed of production is low, and production cost is improved, and economic benefit descends.

The utility model content

The purpose of the utility model is to overcome the defective that exists in the prior art; Provide a kind of and can improve tube surfaces fineness, improve yield rate, improve speed of production, guarantee that the stable plastic tube extruder of extruding is provided with the supporting assembling die of bright-drawn sheath, the plastic pipe any surface finish of manufacturing, be shaped good, quality is high.

For realizing above-mentioned purpose; The technical scheme of the utility model is the supporting assembling die that a kind of plastic tube extruder of design is provided with bright-drawn sheath; Said supporting assembling die comprises mouthful mould and plug, it is characterized in that, said plug exit end face is longer than said mouthful of mould exit end face; Be provided with the refrigerant cavity at the said mouthful of mould port of export; Side at said refrigerant cavity is provided with isolation channel, in said isolation channel, is provided with the bright-drawn sheath of tetrafluoro polyethylene material, between said mouthful of mould exit end face and calibration sleeve, constitutes supporting section M; Said plug exit end face is positioned at said calibration sleeve, and said plug and said calibration sleeve constitute superposition section L.

In order to be the tubing fast shaping that extruder is extruded, optimized technical scheme is, is provided with refrigerant import and the refrigerant exit that is connected with said refrigerant cavity at the port of export of said mouthful of mould.

For the ease of bright-drawn sheath being fixed on the port of export of mouthful mould; Further optimized technical scheme is; Said bright-drawn sheath is the integral annular cover, and the diameter of said annular cover inwall is identical with the diameter of said mouthful of mould inwall, and said bright-drawn sheath is fixed in the said isolation channel through clamping ring.

For the ease of the length of adjustable support section and the installation of being convenient to support end, optimized technical scheme also has, between said supporting section M and the said plug main body through being threaded.

For the ease of the installation of adjustable support section, further optimized technical scheme is to be provided with the dismounting nut at said supporting section M front end.

For the ease of the temperature of control extruder extrusion plastic, further optimized technical scheme also has, and is provided with thermometer hole in the side of said mouthful of mould.

Wherein preferable technical scheme is that the length of said supporting section M is 20～25 centimetres; The length of said superposition section L is 1～1.5 centimetre.

The advantage and the beneficial effect of the utility model are: because this plastic tube extruder is provided with the supporting assembling die of bright-drawn sheath; Installed the polytetrafluoroethylene (PTFE) bright-drawn sheath additional in the outlet of mouth mould; This bright-drawn sheath still can maintain the invariance under the condition of high temperature; Any surface finish, coefficient of friction is little, therefore can improve the fineness on pipe fitting pipe fitting surface greatly.Because the plug exit end face of this supporting assembling die is longer than a mouthful mould exit end face, and the plug exit end face is positioned at calibration sleeve, between extrusion die discharging opening and calibration sleeve charging aperture, is provided with plug and supports in addition; High temperature plastics tubing from mould is extruded even the aperture of impurity generation is arranged on the tube wall, still has plug to support in managing; To getting into calibration sleeve behind the high temperature plastics tubing pre-setting; And plug is with one section with sizing and overlaps, and vacuumizes can it not inhaled flatly, has eliminated between extrusion die discharging opening and calibration sleeve charging aperture the bad phenomenon that forms windrow; Guarantee stable extruding; Enhance productivity effectively and speed of production, eliminated and handled down time that windrow causes and feed back is reprocessed needed production cost, thereby improved economic benefit.

Because the mouth mould port of export of the utility model is provided with the refrigerant cavity; Import cooling media matter from the refrigerant import to the circulation of refrigerant cavity; After about 200 ℃ the plastic pipe that extrusion die is extruded tentatively cools off through the utility model; Get into the calibration sleeve typing that is arranged in the cold water about 25 ℃ again, the high temperature plastics tubing of extruding is progressively lowered the temperature, eliminated stress and concentrated.The utility model can be used for the making of various raw material plastic pipes such as PE, PVC, PPR.

The utility model has been produced product; And drop into plastic pipe and manufacture, under the prerequisite that does not change original production technology, equipment and composition of raw materials, speed of production obviously improves; Yield rate increases substantially; And the product pliability of producing is good, compression strength is high, has eliminated the bag that fluffed, and the product outer wall is bright and clean, brightness good.

Description of drawings

Fig. 1 is that the utility model plastic tube extruder is provided with one of supporting assembling die structural scheme of mechanism of bright-drawn sheath;

Fig. 2 is two of the utility model novel plastics pipe extruder supporting assembling die structural scheme of mechanism of being provided with bright-drawn sheath.

Among the figure: 1, mouthful mould; 2, plug; 3, calibration sleeve; 4, dismounting nut; 5, refrigerant cavity; 6, refrigerant import; 7, refrigerant exit; 8, isolation channel; 9; Internal thread; 10, external screw thread; 11, thermometer hole; 12, bright-drawn sheath; M, supporting section; L, superposition section.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is further described.Following examples only are used for more clearly explaining the technical scheme of the utility model, and can not limit the protection domain of the utility model with this.

Like Fig. 1, shown in 2; The utility model is the supporting assembling die that a kind of plastic tube extruder is provided with bright-drawn sheath, and said supporting assembling die comprises mouthful mould 1 and plug 2, and plug 2 exit end faces are longer than said mouthful of mould 1 exit end face; Be provided with refrigerant cavity 5 at mouth mould 1 port of export; Side at refrigerant cavity 5 is provided with isolation channel 8, in isolation channel, is provided with the bright-drawn sheath 12 of tetrafluoro polyethylene material, between mouth mould 1 exit end face and calibration sleeve 3, constitutes supporting section M; Plug 2 exit end faces are positioned at calibration sleeve 3, and plug 2 constitutes superposition section L with calibration sleeve 3.

In order to be the tubing fast shaping that extruder is extruded, embodiment preferred is in the utility model, is provided with the refrigerant import 6 and refrigerant exit 7 that is connected with said refrigerant cavity 5 at the port of export of mouth mould 1.

In the utility model for the ease of bright-drawn sheath being fixed on the port of export of mouthful mould; Further preferred embodiment is; Said bright-drawn sheath 12 is the integral annular cover; The diameter of said annular cover inwall is identical with the diameter of said mouthful of mould inwall, and said bright-drawn sheath is fixed in the isolation channel 8 through clamping ring.

In the utility model for the ease of the length of adjustable support section and the installation of being convenient to support end; Embodiment preferred also has; Between said supporting section M and the said plug main body through being threaded; Being connected of the external screw thread 10 of its internal thread 9 that is threaded to supporting section M and plug 2 main bodys, vice versa.In order to make supporting section M easy accessibility, be provided with dismounting nut 4 at supporting section M front end.

For the ease of the temperature of control extruder extrusion plastic, further preferred embodiment also has in the utility model, is provided with thermometer hole 11 in the side of said mouthful of mould 1.

Embodiment preferable in the utility model is that the length of said supporting section M is 20～25 centimetres; The length of said superposition section L is 1～1.5 centimetre.

The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.

Claims (7)

1. a plastic tube extruder is provided with the supporting assembling die of bright-drawn sheath; Said supporting assembling die comprises mouthful mould and plug, it is characterized in that, said plug (2) exit end face is longer than said mouthful of mould (1) exit end face; Be provided with refrigerant cavity (5) at said mouthful of mould (1) port of export; Side at said refrigerant cavity (5) is provided with isolation channel (8), in said isolation channel, is provided with the bright-drawn sheath (12) of tetrafluoro polyethylene material, between said mouthful of mould (1) exit end face and calibration sleeve (3), constitutes supporting section M; Said plug (2) exit end face is positioned at said calibration sleeve (3), and said plug (2) constitutes superposition section L with said calibration sleeve (3).

2. plastic tube extruder as claimed in claim 1 is provided with the supporting assembling die of bright-drawn sheath, it is characterized in that, is provided with the refrigerant import (6) and refrigerant exit (7) that is connected with said refrigerant cavity (5) at the port of export of said mouthful mould (1).

3. plastic tube extruder as claimed in claim 2 is provided with the supporting assembling die of bright-drawn sheath; It is characterized in that; Said bright-drawn sheath (12) is the integral annular cover; The diameter of said annular cover inwall is identical with the diameter of said mouthful of mould (1) inwall, and said bright-drawn sheath (12) is fixed in the said isolation channel (8) through clamping ring.

4. plastic tube extruder as claimed in claim 1 is provided with the supporting assembling die of bright-drawn sheath, it is characterized in that, between said supporting section M and said plug (2) main body through being threaded.

5. plastic tube extruder as claimed in claim 4 is provided with the supporting assembling die of bright-drawn sheath, it is characterized in that, is provided with dismounting nut (4) at said supporting section M front end.

6. be provided with the supporting assembling die of bright-drawn sheath like any described plastic tube extruder of claim 1 to 5, it is characterized in that, the side of said mouthful of mould (1) is provided with thermometer hole (11).

7. plastic tube extruder as claimed in claim 6 is provided with the supporting assembling die of bright-drawn sheath, it is characterized in that, the length of said supporting section M is 20～25 centimetres; The length of said superposition section L is 1～1.5 centimetre.