CN202174713U

CN202174713U - Barrel matched with screw rod and used for injection molding machine

Info

Publication number: CN202174713U
Application number: CN2011202230974U
Authority: CN
Inventors: 倪力红
Original assignee: ZHOUSHAN DINGHAI DONGZHEN SCREW MANUFACTURING CO LTD
Current assignee: ZHOUSHAN DINGHAI DONGZHEN SCREW MANUFACTURING CO LTD
Priority date: 2011-06-26
Filing date: 2011-06-26
Publication date: 2012-03-28
Anticipated expiration: 2021-06-26

Abstract

The utility model relates to a barrel matched with a screw rod and used for an injection molding machine. The barrel matched with the screw rod and used for the injection molding machine comprises a barrel body (4); the barrel body (4) is provided with an inner cavity (42) where a screw rod (1) can be arranged in a penetrating manner; and the inner cavity (42) comprises a charging section (I), a fusion section (II), a homogenization section (III), a plastification section (IV) and an extrusion section (V). The barrel matched with the screw rod and used for the injection molding machine is characterized in that a plurality of alloy strips (2) are embedded on the inner surface of the extrusion section (V) of the inner cavity; and the surfaces of the alloy strips (2) are level to the inner surface of the inner cavity of the extrusion section (V). Compared with the prior art, the barrel matched with the screw rod and used for the injection molding machine has the advantages that the phenomenon of easy fall-off and abrasion of alloy powder caused by that alloy powder is sprayed on the inner wall of the barrel body in the conventional method is avoided, therefore, the wear degree of the inner wall of the barrel body is greatly reduced, and the service life of the barrel body is effectively prolonged; in addition, the barrel body comprises two parts which are connected in a detachable manner, so that the detachment and the installation are more convenient; and when the extrusion section has abrasion and needs to be replaced, only the extrusion section of the barrel body needs to be replaced, therefore, not only can time be saved, but also the production cost of the barrel body is reduced.

Description

A kind of being used on the injection machine and the suitable machine barrel of screw rod

Technical field

The utility model relates to a kind of being used on the injection machine and the suitable machine barrel of screw rod.

Background technology

Existing a kind of patent No. is 200820084388.8 and is called that the Chinese utility model patent of " extruder with tungsten carbide awl twin-screw and machine barrel " discloses a kind of awl twin-screw and supporting machine barrel thereof; Its structure includes two barrel head of awl and awl twin-screw; The inner chamber spun casting of the two barrel head of this awl has the diamondite layer, and the surface of awl twin-screw also is coated with the diamondite layer.This utility model adopts spun casting diamondite technology, new and high technologies such as supersonic speed hot-spraying technique, and machine barrel and screw rod have high abrasion, being able to bear strong corrosion property.But coming off and wear phenomenon appears in this alloy-layer easily, and in addition, this awl two-shipper tube is whole piece processing, and wearing and tearing are to appear at leading portion generally speaking, if wearing and tearing then need integral replacing, have both lost time, and increase cost again.

The utility model content

The utility model technical problem to be solved is to provide a kind of to design ingenious, rational in infrastructure and machine barrel discharging section inwall difficult drop-off and nonabradable a kind of being used on the injection machine and the suitable machine barrel of screw rod to above-mentioned prior art present situation.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: originally be used on the injection machine and the suitable cylindrical shell of screw rod; Be provided with the inner chamber that can place screw rod in the said cylindrical shell; This inner chamber includes feeding section, melt zone, homogenizing zone, fluxing zone, extruding zone; It is characterized in that: be inlaid with some alloy bars spaced apart on the inner surface of said extruding zone inner chamber, the inner surface flush of said alloy bar surface and extruding zone inner chamber.

As improvement, said alloy bar radial cross-section is positioned on the same periphery.

Improve, said alloy bar can be preferably five equilibrium and be distributed on the same periphery again.

Improve, the axial length of said alloy bar can be preferably 450～550mm, can reach wear-resisting effect like this, can reach the saving material again again.

Improve, said some can be preferably 6～10 again, certainly also can be more or less, specifically can decide by design.

Improve, the extruding zone of said cylindrical shell can be preferably dismountable type with fluxing zone and be connected again.

Improve again; The structure choice that said dismountable type is connected is: the end face of said extruding zone cylindrical shell is provided with bulge loop; Bulge loop is provided with screw; On the cylindrical shell of said fluxing zone with bulge loop on the screw opposite position also be provided with fixing hole, fluxing zone and extruding zone upper shell is fixed with each other between screw and the fixing hole through bolt or screw rod.

Improve again, can be distributed with the shrinkage pool that is used to place electrothermal piece at interval on the outer rim of said cylindrical shell.

Improve again; Said screw rod includes and the corresponding feeding section of cylindrical shell, melt zone, homogenizing zone, fluxing zone, extruding zone; Said fluxing zone is made up of for two sections one section of plasticizing, plasticizing, and the pitch ratio of spiral shell rib is followed successively by on said feeding section, melt zone, homogenizing zone, one section of plasticizing, two sections of plasticizings, the extruding zone: S1: S2: S3: S4: S5: S6=2.9～3: 1.8～1.9: 1.5～1.6: 1.3～1.4: 2.2～2.3: 2～2.1.

Compared with prior art; The advantage of the utility model is: the mixing inwall that the inwall of this machine barrel adopts the mode of inlaying alloy bar to form; Edge alloy bar length is 500mm; The inwall that the structure of this design has been eliminated the past cylindrical shell comes off and phenomenon easy to wear because of adopting the alloyed powder spraying alloyed powder to occur easily, thereby has reduced the degree of wear of cylinder inboard wall significantly, has prolonged the service life of cylindrical shell effectively; In addition, cylindrical shell is divided into two ones, can connect through dismountable type, makes dismounting and installs more conveniently, when extruding zone wearing and tearing occur and when needing to change, as long as change the cylindrical shell of extruding zone, both saved time, reduces the production cost of cylindrical shell again; Also have, the screw rod that matches with cylindrical shell is supporting and be divided into six sections with cylindrical shell, and the spiral shell rib of different pitch is set between section and the section each other, reached plasticizing evenly, discharging is happy, be difficult for the technique effect that Jiao expects.

Description of drawings

Fig. 1 is the cross-sectional view of the utility model embodiment;

Fig. 2 is the cutaway view of M-M line among Fig. 1;

Fig. 3 is the screw-rod structure sketch map that matches with Fig. 1 middle cylinder body.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Extremely shown in Figure 3 like Fig. 1; Being used on the injection machine and the suitable machine barrel of screw rod of present embodiment; Include and be provided with the inner chamber 42 that can place screw rod 1 in the cylindrical shell 4, this inner chamber 42 includes feeding section I, melt zone II, homogenizing zone III, fluxing zone IV, extruding zone V, is inlaid with some alloy bars spaced apart 2 on the inner surface of said extruding zone V inner chamber; This alloy bar 2 is 6～10, and concrete radical can be decided by designing requirement.The inner surface flush of alloy bar 2 surface and extruding zone V inner chamber, alloy bar 2 be on radial cross-section the is positioned at same periphery, and be distributed on the same periphery for five equilibrium.The axial length of the alloy bar 2 of present embodiment is 450～550mm.The extruding zone V of above-mentioned cylindrical shell 4 is that dismountable type is connected with fluxing zone IV.The structure that this dismountable type is connected is: an end face of said extruding zone V cylindrical shell is provided with bulge loop 43, and this bulge loop 43 is provided with screw 44.Cylindrical shell 4 one end faces of fluxing zone IV be provided with bulge loop 43 on screw 44 corresponding fixing holes 45, fluxing zone IV and extruding zone V is fixed with each other between screw 44 and the fixing hole 45 through bolt or screw rod.The shrinkage pool 41 of placing electrothermal piece that is useful on spaced apart on the outer rim of said cylindrical shell.

Above-mentioned screw rod 1 includes and the corresponding feeding section A of cylindrical shell, melt zone B, homogenizing zone C, fluxing zone E, extruding zone G; Said fluxing zone E is made up of one section E1 of plasticizing, two sections E2 of plasticizing, and the pitch ratio that said feeding section A, melt zone B, homogenizing zone C, one section E1 of plasticizing, two sections E2 of plasticizing, extruding zone G go up spiral shell rib 11 is followed successively by: S1: S2: S3: S4: S5: S6=2.9～3: 1.8～1.9: 1.5～1.6: 1.3～1.4: 2.2～2.3: 2～2.1.

Below the utility model is described in further detail.The structure of this machine barrel includes feeding section I, melt zone II, homogenizing zone III, fluxing zone IV, extruding zone V; On the same internal diameter periphery of said extruding zone V; In the inner chamber of extruding zone, be inlaid with alloy bar 2 five equilibrium; The alloy body that said alloy bar is made up of iron, molybdenum, boron, silicon and chromium (FeMoBSiCr), this alloy are known alloy material.The utility model is that the alloyed powder with the past is coated in cylinder inboard wall and changes into and adopt alloy bar 2 to be installed on the structure on the cylinder inboard wall, is the main points of the utility model, through this structure, makes the cylinder inboard wall longer service life of extruding zone.Alloy bar 2 length of present embodiment in the extruding zone inner chamber are preferably 500mm, so promptly save material, can satisfy wear-resisting technique effect again.The extruding zone V of above-mentioned cylindrical shell is detachable separate component; Be connected through circular bulge loop 43 between the extruding zone V of said cylindrical shell and the fluxing zone IV; The first-class branch of same periphery of this bulge loop 43 is provided with and is used for the screw 44 that bolt or screw fix cylindrical shell, and above-mentioned screw can be preferably 8～12.Concrete number can be decided by design.The fixing hole 45 that fixes with the extruding zone cylindrical shell that is useful on spaced apart on the fluxing zone IV of cylindrical shell 4 end face; The total length L of the cylindrical shell 4 of present embodiment is 1465mm; The maximum diameter d 1 of the screw rod that matches with said cylindrical shell is φ 132; Minimum diameter d2 is φ 65, and the length s of said screw rod is 1680mm.Above-mentioned spiral shell rib 11 is 2.9～3mm at the pitch S1 of the spiral shell rib 11 of feeding section A, be 1.8～1.9mm at the pitch S2 of the spiral shell rib 11 of melt zone B, be 1.5～1.6mm at the pitch S3 of the spiral shell rib of homogenizing zone C, be 1.3～1.4mm at the pitch S4 of one section E1 spiral shell rib of plasticizing, be 2.2～2.3mm at the pitch S5 of two sections E2 spiral shell ribs 11 of plasticizing, be 2～2.1mm at the pitch S6 of extruding zone G spiral shell rib 11.

Claims

1. one kind is used on the injection machine and the suitable machine barrel of screw rod; Include and be provided with the inner chamber (42) that can place screw rod (1) in the cylindrical shell (4); This inner chamber (42) includes feeding section (I), melt zone (II), homogenizing zone (III), fluxing zone (IV), extruding zone (V); It is characterized in that: be inlaid with some alloy bars spaced apart (2) on the inner surface of said extruding zone (V) inner chamber, the inner surface flush of said alloy bar (2) surface and extruding zone (V) inner chamber.

2. machine barrel according to claim 1 is characterized in that: said alloy bar (2) is on radial cross-section the is positioned at same periphery.

3. machine barrel according to claim 2 is characterized in that: said alloy bar (2) is on five equilibrium the is distributed in same periphery.

4. according to claim 1 or 2 or 3 described machine barrels, it is characterized in that: the axial length of said alloy bar (2) is 450～550mm.

5. according to claim 1 or 2 or 3 described machine barrels, it is characterized in that: said some is 6～10.

6. machine barrel according to claim 4 is characterized in that: the extruding zone (V) of said cylindrical shell (4) is connected for dismountable type with fluxing zone (IV).

7. machine barrel according to claim 4; It is characterized in that: the structure that said dismountable type is connected is: an end face of said extruding zone (V) cylindrical shell is provided with bulge loop (43); This bulge loop (43) is provided with screw (44); Cylindrical shell (4) one end faces of said fluxing zone (IV) be provided with bulge loop (43) on the corresponding fixing hole of screw (44) (45), fluxing zone (IV) and extruding zone (V) is fixed with each other between said screw (44) and the fixing hole (45) through bolt or screw rod.

8. machine barrel according to claim 5 is characterized in that: the shrinkage pool (41) of placing electrothermal piece that is useful on spaced apart on the outer rim of said cylindrical shell.

9. according to claim 1 or 2 or 3 described machine barrels; It is characterized in that: said screw rod (1) includes and the corresponding feeding section of cylindrical shell (4) (A), melt zone (B), homogenizing zone (C), fluxing zone (E), extruding zone (G); Said fluxing zone (E) is made up of plasticizing one section (E1), plasticizing two sections (E2), and the pitch ratio that said feeding section (A), melt zone (B), homogenizing zone (C), plasticizing one section (E1), plasticizing two sections (E2), extruding zones (G) are gone up spiral shell rib (11) is followed successively by: S1: S2: S3: S4: S5: S6=2.9～3: 1.8～1.9: 1.5～1.6: 1.3～1.4: 2.2～2.3: 2～2.1.