CN206254410U - A kind of pouring head overcoat for PU materials - Google Patents

Abstract

A kind of pouring head overcoat for PU materials, with hollow cylindrical side wall, is provided with the sandwich for cooling water circulation in the wall of side, the side wall includes inner and outer wall, mezzanine space is formed between inner and outer wall.In the mezzanine space, two sealed spacer bar is set between the inner walls and the outer, extend to the bottom of overcoat from overcoat top respectively, it is tightly connected with inwall, outer wall and overcoat top, and respectively with the inner and outer wall palette of jacket bottom at keep interval, hole is formed, is thus formed in sleeve side wall sandwich by the two relative sandwich portions circulated for cooling water of the porosity communication, two sandwich portion tops are also respectively provided with cooling water gateway.The sandwich of pouring head overcoat of the present utility model so that the circulation of cooling water is more smoothly, while jacket structure is simplified, has reached good cooling effect.

Description

A kind of pouring head overcoat for PU materials

Technical field

The utility model is related to PU (polyurethane) material placingJi Shu field, especially a kind of pouring head for PU materials Overcoat.

Background technology

, it is necessary to using casting equipment model will be poured into such as PU expanded materials in PU (polyurethane) material pouring technology In, obtain corresponding PU products after foaming in a model.

Existing pouring head jacket structure is complicated, and heat dispersion is bad, and uses such as stainless steel and other metal materials It is made.During product use, due to the high-speed rotation of mixing head, outer sheath temperature is frequently resulted in too high；And PU materials hold Easily it is bonded on pouring head outer casing inner wall, influence is stirred and casting quality；Need constantly to shut down in use, clean, Low production efficiency；And the PU materials bonded on pouring head outer casing inner wall are bonded closely with inwall, it is more difficult to remove；Material feeding is multiple Afterwards, using the gentle punching cleaning of solvent, inwall gap diminishes, so as to influence flow velocity, product is produced bubble, influences product quality.

Utility model content

To solve the above problems, the utility model provides a kind of pouring head overcoat for PU materials, with hollow circle Cylindrical side wall, is provided with the sandwich for cooling water circulation in the wall of side, the side wall includes inner and outer wall, inwall and outer The mezzanine space of Cooling Water flowing is formed between wall, in the mezzanine space, two sealed spacer bars are arranged on inwall And outer wall between, extend to the bottom of overcoat from overcoat top respectively, be tightly connected with inwall, outer wall and overcoat top, and point Inner and outer wall joint portion not with jacket bottom keeps interval, forms hole, is thus formed in sleeve side wall sandwich By the two relative sandwich portions circulated for cooling water of the porosity communication, two sandwich portion tops are also respectively provided with There is cooling water gateway.

Further, the inwall is constituted has PP or PE coatings on a side surface of stirring space.

Further, inner and outer wall is Split type structure, and inwall is made up of PP or PE materials.

Further, the bottom of inwall bends to outer wall, is engaged with outer wall at the adapting table of outer wall.

Further, the top of inwall is provided with the flange collar towards outer wall, and what flange collar was sealed abuts on outer wall.

Further, two sealed spacer bars extend from inwall flange collar lower edge to the bottom of overcoat respectively, and respectively with inwall Bottom and the outer wall bending portion of being tightly connected keep interval, form hole.

Further, wall top in side is provided with the flange being connected with pouring head miscellaneous part, is provided with flange and is connected together Hole.

Further, the outer rim of flange protrudes from sleeve side wall, sealing ring is formed with the end face of the flange and installs annular Groove.

Further, flange is integrally formed with the outer wall of side wall.

Further, it is formed with internal thread in the lower inside of the side wall.

Pouring head overcoat of the present utility model has special sandwich so that the circulation of cooling water is more smoothly, with Traditional spiral cooling structure is compared, and while jacket structure is simplified, can be adjusted cold by adjusting the pore size But water-carrying capacity, has reached more preferable cooling effect, and under conditions of identical hydraulic pressure, inlet water temperature, device temperature can reduce by 5 degree More than.Also, because pouring head outer casing inner wall has the former materials such as PP (polypropylene) or PE (polyethylene) layer, PU (polyurethane) material Material is not easy to be bonded on the inwall of pouring head overcoat, and compared to prior art, pouring head overcoat of the present utility model can be more Prolonged continuous operation.

It is demonstrated experimentally that in the case of using PU (polyurethane) raw material (virgin material), the pouring head of all steel material is general Be accomplished by cleaning after material feeding 200 times, and it is of the present utility model can be after material feeding 600 times with PP or PE layers of pouring head overcoat Can also normally run, operational efficiency lifts more than 3 times.

Brief description of the drawings

Fig. 1 is the top view of casting equipment of the present utility model；

Fig. 2 is sectional view of the casting equipment top view of the present utility model along A-A directions；

Fig. 3 a are the stereogram of the overcoat of casting equipment of the present utility model；

Fig. 3 b are the side view of the overcoat of casting equipment of the present utility model；

Fig. 3 c are the top view of the overcoat of casting equipment of the present utility model；

Fig. 3 d are the sectional view in C-C directions along Fig. 3 b of the overcoat of casting equipment of the present utility model；

Fig. 3 e are the sectional view in C-C directions along Fig. 3 b of the overcoat of the another embodiment of the utility model casting equipment；

Fig. 4 a are the stereogram of the material mouth of casting equipment of the present utility model；

Fig. 4 b are the sectional view of the material mouth of casting equipment of the present utility model；

Fig. 5 a are the front view of the mixing head of casting equipment of the present utility model；

Fig. 5 b are the sectional view in C-C directions along Fig. 5 a of the mixing head of casting equipment of the present utility model；

Fig. 5 c are the front view of the mixing head plug of casting equipment of the present utility model；

Fig. 5 d are the side view of the mixing head of the another embodiment of the utility model casting equipment；

Fig. 5 e are the front view of the mixing head of the another embodiment of the utility model casting equipment.

Specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

Casting equipment/pouring head as shown in Figure 1 and Figure 2, is provided with multiple bearings 11 in the bearing block 1 on pouring head top, main Axle 2 is contained in bearing block 1, and the two ends of main shaft 2 are passed from the two ends of bearing block 1 respectively, and the end of bearing block 1 is passed in main shaft 2 Be provided with sealing device 12, the sealing device 12 can using the utility model people preceding patent 201410244757.5, Technology in 201420293401.6.Bearing block 1 is fixed in terminal pad 3, and the sealing device 12 of the bottom of bearing block 1 passes through connection Disk 3, main shaft 2 is extend into the mixing chamber 4 that the lower section of terminal pad 3 is set.Cylinder 41, inlet valve 42, needle-valve are connected with mixing chamber 4 43rd, purge valve 44, feed back pressure regulator valve 45 etc., various PU raw materials are injected into mixing chamber 4 by one or more material interfaces, main shaft 2 extend on the end of mixing chamber 4 and are fixedly connected with along the axially extending mixing head 5 of main shaft 2.The top of mixing head 5 is located at mixing In the space of room 4, the middle and lower part of mixing head 5 passes from mixing chamber 4, is received into the space of overcoat 6 of the bottom of mixing chamber 4 fixation In, the bottom of overcoat 6 is provided with castable mouth 7.When casting equipment works, it is vertically arranged, drives main shaft 2 to rotate by motor, main shaft 2 Fixed mixing head 5 follows main shaft 2 to rotate together with one end of mixing chamber 4, and various PU raw materials (being determined according to product) pass through Different material interfaces 42 enter into mixing chamber 4, by PU raw materials in mixing chamber 4 and the space of overcoat 6 under the turning effort of mixing head 5 In mixed, the PU materials for mixing are foamed by expecting that mouth 7 is injected into grinding tool.

As illustrated in figs. 3 a-3d, overcoat 6 has hollow cylindrical side wall 60, and the one end of side wall 60 is provided with and is connected with mixing chamber 4 Flange 61.The connecting hole 62 being connected together for the respective base projection with mixing chamber 4 is provided with flange 61.Flange 61 Outer rim protrudes from sleeve side wall 60, and annular groove 64 is formed with the end face of the flange 61, in order to be connected with mixing chamber 4 When sealing ring is installed, form sealing structure.Sleeve side wall 60 is provided with the sandwich for cooling water circulation, such as Fig. 3 c, 3d It is shown, including inwall 601 and outer wall 602；The top of inwall 601 is provided with the flange collar 603 towards outer wall 602, and flange collar 603 is sealed Abut on outer wall 602, can flange collar 603 abut outer wall 602 position on set groove 604, reached by laying sealing ring To sealing purpose；Inwall 601 and outer wall 602 closure of flange collar more than 603 link together；The bottom of inwall 601 is to outer wall 602 Bending, is tightly connected at the adapting table 611 of outer wall 602 with outer wall 602；Two sealed spacer bar 606 is arranged on sleeve side wall Between the inwall 601 and outer wall 602 of 60 main bodys, extend from the lower edge of inwall flange collar 603 to the bottom of overcoat 6 respectively, with inwall 601st, outer wall 602 and flange collar 603 are tightly connected, and respectively between the bottom of inwall 601 and the bending of outer wall 602 portion's of being tightly connected holding Every, hole (not shown) is formed, so as to split to the mezzanine space between inwall 601 and outer wall 602, constitute inwall 601 And in the cooling water free air space between outer wall 602.It is consequently formed the left and right two for cooling water circulation of sleeve side wall 60 Relative sandwich portion 607,608, it passes through the bottom porosity communication, at two relative tops of sandwich portion 607,608 It is also respectively provided with two cooling water gateways 609,610.Additionally, flange 61 can be integrally formed with the outer wall 602 of side wall.This reality Apply in example, extend to form outer wall extension 612 in the bottom of adapting table 611 of outer wall 602, the shape on the inner side of outer wall extension 612 Into the internal thread having for being connected with material mouth 7, outer wall extension 612 is provided with placement sealing with the connecting portion of outer wall adapting table 611 The sealed groove 605 of circle.The inwall 601 of sleeve side wall 60 is made up of PP or PE materials.

Or, in another embodiment of the present utility model, as shown in Figure 3 e, with the composition sleeve side wall 60 shown in Fig. 3 d The inwall 601 of middle cooling water circulation sandwich is different with the Split type structure of outer wall 602, inwall 601 in the present embodiment and outward Wall 602 is structure as a whole, and mezzanine space is formed with therebetween.Two sealed spacer bar 606 is arranged on the interior of the main body of sleeve side wall 60 Between wall 601 and outer wall 602, overcoat top top extends to the bottom of overcoat 6 respectively, with inwall 601, outer wall 602 and overcoat Top top is tightly connected, and the inner and outer wall joint portion with jacket bottom keeps interval respectively, forms hole (not shown), So as to split to the mezzanine space between inwall 601 and outer wall 602, the cooling water between inwall 601 and outer wall 602 is constituted In free air space.The relative sandwich portion 607,608 in the left and right two for cooling water circulation of sleeve side wall 60 is consequently formed, It passes through the bottom porosity communication, and two cooling waters are also respectively provided with two relative tops of sandwich portion 607,608 Gateway 609,610.The inwall 601 of sleeve side wall 60 is towards having PP or PE on a side surface of pouring head overcoat hollow space Coating.

Material mouth 7 is in funnel-shaped structure wide at the top and narrow at the bottom, can be sealably coupled to by the way of screw thread or engaging and put outward, It has inside and outside double-layer structure, and as shown in Fig. 4 a, 4b, the internal layer 701 contacted with cast raw material is made up of PP or PE materials, or tool There are PP or PE coatings, be wrapped in the outer layer 702 outside the internal layer 701 and be made up of the high-strength metal material of such as stainless steel, So as to increase the integral rigidity of charging nozzle 7.Expect the funnel-shaped structure top edge side of mouth 7 in a ring, be provided with and overcoat 6 The external screw thread 703 of the internal thread connection on the inner side of inwall 601, funnel-shaped structure dome top surface is formed with annular groove 704, The inner edge and bottom of annular groove 704 are made up of internal layer 701, and the outer cause outer layer 702 of annular groove 704 is constituted, annular groove 704 are used to accommodate sealing ring, so as to be tightly connected with overcoat 6.Expecting the funnel-shaped structure external collar of mouth 7 has terrace with edge 705, for example Six terrace with edges, in order to expect the installation of mouth 7.

Fig. 5 a show the stereogram of mixing head of the present utility model 5, according to use state from top to bottom (Fig. 5 a from the right side to It is left) include four sections --- the 501, first spiral section 502 of fin section, the stirring spiral section 504 of raised section 503 and second.

Fin section 501 is located at the top of mixing head 5, has the flange for protruding from mixing head main body 506 on its top 5011, it is convexly equipped with 3-5 pieces fin 5012 relative to the axially inclined of mixing head main body 506 on the surface of mixing head main body 506, it is excellent 3 are selected, the multi-disc fin 5012 is evenly distributed on the circumferential surface of mixing head main body 506, be highly 3-6mm, fin 5012 one end are connected to the lower surface of flange 5011, and the other end extends to the top edge of the first spiral section 502, the multi-disc fin 5012 have identical angle of inclination, the top edge institute of fin 5012 and the spiral section 502 of flange 5011 and first in the present embodiment Into acute angle be 60 °, those skilled in the art can select in the range of 50-70 °.

First spiral section 502 is located at the lower end of fin section 501, uniform convex on the circumferential surface of its mixing head main body 506 It is provided with a plurality of spiral raised line 5021, the hand of spiral of a plurality of spiral raised line 5021 and the inclination side of the fin 5012 of fin section 501 Highly it is 2-3mm to identical.In the circumferential surface in the centre position of the first spiral section 502, dug to axis direction uniform intervals There are two grooves of same size 5022, each groove respectively accounts for 120 ° of circumference, is separated by 60 ° of circumference, and those skilled in the art also may be used Uniformly to dig three grooves.

Stirring raised section 503 be located at the first spiral section 502 lower end, stir raised section 503 mixing head main body 506 it is straight Footpath is raised in stirring less than fin the 501, first spiral section 502 of section and the diameter of the mixing head main body 506 of the second spiral section 504 Uniform intervals are provided with four row stirring projection on the surface of the circumferencial direction of mixing head main body 506 of section 503, i.e., in mixing head main body 90 ° of row stirrings of interval setting four are raised on 506 circumferencial directions.Wherein, first row stirring is raised includes and the neighbour of the first spiral section 502 Connect one first stirring raised 5031 and convex along three second stirrings that the axis of mixing head main body 506 successively uniform intervals is set Play 5032；First stirring raised 5031 and the second stirring raised 5032 are in boss-shaped, and the cross section of the first stirring raised 5031 is It is axially the rectangle on side long with mixing head main body 506, the cross section of the second stirring raised 5032 is with the axle of mixing head main body 506 To the inversion right-angled trapezium for vertical edges, the incline direction and a plurality of spiral shell of the first spiral section 502 of the hypotenuse of right-angled trapezium are inverted The hand of spiral for revolving raised line 5021 is identical with the incline direction of the fin 5012 of fin section 501.Secondary series stirring is raised including right The three secondary series stirring that should be set in the gap uniformity between four stirrings raised 5031,5032 in first row stirring projection What is set after projection 5032 and three second stirrings raised 5032 is convex with one first stirring of the adjoining of the second spiral section 504 Play 5031.Similar, the raised raised gap uniformity of adjacent one row stirring that corresponds to of the three, the 4th row stirrings is set.First stirs The height for mixing the stirring raised 5032 of projection 5031 and second is 6-12mm.In the present embodiment, it is described in the case of four row, this Art personnel are appreciated that spaced even column can be circumferentially set as above to be stirred projection to realize this practicality It is new.It is raised alternatively, it is also possible to only be uniformly arranged multiple second stirrings in the mixing head main body 506 of stirring raised section 503 5032 realize the utility model.

Second spiral section 504 is located at the lower end of stirring raised section 503, with a plurality of spiral raised line 5041 and groove 5042, Its structure is identical with the first spiral section 502.

Can set, the 501, first spiral section 502 of fin section, the spiral section 504 of stirring raised section 503 and second have substantially Identical external diameter.Can also set, fin the 501, first spiral section 502 of section and the second spiral section 504 are outer with what is be substantially the same Footpath, stirs the external diameter of raised section 503 slightly larger than fin the 501, first spiral section 502 of section and the external diameter of the second spiral section 504, that is, stir The top for mixing projection is higher by the surface of fin the 501, first spiral section 502 of section and the second spiral section 504.

Preferably, the 501, first spiral section 502 of fin section, the stirring spiral section 504 of raised section 503 and second are in mixing head 5 Length ratio on axial direction is 2：3：4：3.

Preferably, the spiral section 502 of fin 5012 and first or the spiral raised line of the second spiral section 504 of fin section 501 5021st, 5041 height ratio is 1：1.5-2.0；The fin 5012 of fin section 501 is raised with the first stirring of stirring raised section 503 5031 and second the height ratio of stirring raised 5032 be 1：3-4.0.

During assembling, fin section 501 and the first spiral section 502 are located in the space of mixing chamber 4, and raw material is preferably driven into The middle and lower part of fin section 501, by the rotation of mixing head, can be pressed downward for raw material by fin section 501, and less can squeeze into The generation of bubble during raw material；The spiral section 504 of stirring raised section 503 and second is located in the space of overcoat 6.Additionally, and funnel-form The shape of material mouth 7 be adapted, the lower end mixing head main body 506 of the second spiral section 504 is set to inverted boss 5061.

As shown in Fig. 5 b, 5c, mixing head 5 is made up of the plug 51 and outer layer 52 adaptable with head shapes are mixed, outer layer into Type is made up of in mandrel surface light material, can be made up of PP or PE materials, or with PP or PE coatings；Plug 51 is preferably The metal material of such as stainless steel, in hollow form, is connected with main shaft 2, is rotated under the drive of main shaft 2.

Plug 51 includes caput 511, connecting rod 512 and rod tail connecting portion 513, caput 511, connecting rod 512 and rod tail connecting portion 513 cross section outer rim is rounded and mutually coaxially connected, the two ends of connecting rod 512 respectively with caput 511 and rod tail connecting portion 513 It is coaxially connected.The top edge of caput 511 and bottom along being nearby respectively arranged with annular projection 5112,5113, on the bottom face of caput 511 It is formed with the conical surface 5111 for extending downwardly.The bottom that rod tail connecting portion 513 is connected with connecting rod 512 is convex along nearby a ring-type is provided with 5131 are played, is additionally provided between in the annular projection 5131 of rod tail connecting portion 513 and the top of rod tail connecting portion 513 another Annular projection 5132.Main shaft 2 is inserted into the hollow space of plug 51 by rod tail connecting portion 513.

Because cladding material has selected light material, plug employs the moulding of similar dumbbell, compared in the prior art The mixing head of metal material, mixing head easy to manufacture of the present utility model ensure that uniform rotation, reduce eccentric degree, from And in mixed processes, reduce the generation of bubble in raw material, improve product quality.

Fig. 5 d, 5e show the stereogram of the mixing head 8 of the another embodiment of the utility model, and mixing head 8 includes mixing head Main body 81, top connector 82, bottom boss portion 83 and bottom connecting portion 84, mixing head main body 81, top connector 82, bottom Be inverted boss portion 83 and bottom connecting portion 84 cross section outer rim is rounded and mutual coaxially connected, the top of mixing head main body 81 It is connected with top connector 82, the bottom of mixing head main body 81 is connected with one end of bottom connecting portion 84, bottom connecting portion 84 The other end is inverted boss portion 83 and is connected with bottom.Selectable, mixing head 8 can omit bottom connecting portion 84, mixing head main body Directly boss portion 83 is inverted with bottom and be connected in 81 bottom.

Mixing head main body 82 is cylindrical, and uniform intervals are provided with 6 rows (more than or equal to 3 on the side wall of mixing head main body 81 Row) mixing component, wherein being provided with row's mixing component on the bottom margin of mixing head main body.Often row's mixing component includes ring Around 6 (being more than or equal to 3) first stirring raised line 85 of cylinder circumference, 6 first stirring raised line 85 edges on same circumference Its length direction uniform intervals is set.Each first stirring raised line 85 is in isosceles boss-shaped, with the isosceles along its width Trapezoid cross section.

Bottom connecting portion 84 is cylindrical, between its height is not more than between two row's mixing components in mixing head main body 81 Away from diameter of its diameter less than mixing head main body 81.In bottom, connecting portion 84 is inverted the side that boss portion 83 is connected with bottom There is row's mixing component on edge, including around 6 (being more than or equal to 3) second stirring raised line 86 of cylinder circumference, same Uniform intervals are set 6 second stirring raised lines 86 on circumference along its length.Each second stirring raised line 86 is convex in isosceles Mesa-shaped, with the isosceles trapezoid section along its width.The length of the second stirring raised line 86 is less than the first stirring raised line 85 Length.

It is inverted coniform boss that boss portion 83 is inverted in bottom, and the shape with funnelform material mouth 7 is adapted, its bottom surface It is connected with bottom connecting portion 84 or mixing head main body 81.

Top connector 82 is cylindrical, is formed on the basal surface position that top connector 82 is connected with mixing head main body 81 There is fillet surface 87, rotation tooth 88 is formed with the top surface of top connector 82.

Mixing head 5 with previous embodiment is identical, and mixing head 8 includes being made up of plug and outer layer, and outer layer is molded over plug Surface, is made up of light material, can be made up of PP or PE materials, or with PP or PE coatings；Plug 51 is preferably for example stainless The metal material of steel, in hollow form, is connected with main shaft 2, is rotated under the drive of main shaft 2.Plug in the present embodiment with it is previous The mandrel structure of embodiment is identical, will not be described here.

Below the preferred embodiment that the utility model is created is illustrated, but the utility model is created not It is limited to the embodiment, those of ordinary skill in the art can also make on the premise of without prejudice to the utility model creative spirit A variety of equivalent modifications or replacement, these equivalent modifications or replacement are all contained in the application claim limited range It is interior.

Claims (10)

1. a kind of pouring head overcoat for PU materials, with hollow cylindrical side wall, is provided with for cooling down current in the wall of side Logical sandwich, it is characterised in that：The side wall includes inner and outer wall, and Cooling Water stream is formed between inner and outer wall Dynamic mezzanine space,

In the mezzanine space, two sealed spacer bars are set between the inner walls and the outer, respectively from overcoat top to overcoat Bottom extend, be tightly connected with inwall, outer wall and overcoat top, and protect with the inner and outer wall joint portion of jacket bottom respectively Interval is held, hole is formed, is formed in sleeve side wall sandwich by two circulated for cooling water of the porosity communication Relative sandwich portion, two sandwich portion tops are also respectively provided with cooling water gateway.

2. pouring head overcoat as claimed in claim 1, it is characterised in that：The inwall is constituted on a side surface of stirring space With PP or PE coatings.

3. pouring head overcoat as claimed in claim 1, it is characterised in that：Inner and outer wall is Split type structure, inwall by PP or PE materials are constituted.

4. the pouring head overcoat as described in one of claim 1-3, it is characterised in that：The bottom of inwall bends to outer wall, outside Engaged with outer wall at the adapting table of wall.

5. pouring head overcoat as claimed in claim 3, it is characterised in that：The top of inwall is provided with the flange collar towards outer wall, What flange collar was sealed abuts on outer wall.

6. pouring head overcoat as claimed in claim 5, it is characterised in that：Two sealed spacer bars are respectively from inwall flange collar lower edge Extend to the bottom of overcoat, and bend the portion of being tightly connected with inwall bottom and outer wall respectively and keep interval, form hole.

7. the pouring head overcoat as described in one of claim 1-3, it is characterised in that：Side wall top be provided with pouring head other The flange of part connection, is provided with the hole that is connected together on flange.

8. pouring head overcoat as claimed in claim 7, it is characterised in that：The outer rim of flange protrudes from sleeve side wall, the method Sealing ring is formed with blue end face annular groove is installed.

9. pouring head overcoat as claimed in claim 7, it is characterised in that：Flange is integrally formed with the outer wall of side wall.

10. the pouring head overcoat as described in one of claim 1-3, it is characterised in that：The shape in the lower inside of the side wall Into there is internal thread.