CN102285085B - Rubber tube extruder head of rubber and plastic extruder without need of eccentric adjustment - Google Patents
Rubber tube extruder head of rubber and plastic extruder without need of eccentric adjustment Download PDFInfo
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- CN102285085B CN102285085B CN2011101379596A CN201110137959A CN102285085B CN 102285085 B CN102285085 B CN 102285085B CN 2011101379596 A CN2011101379596 A CN 2011101379596A CN 201110137959 A CN201110137959 A CN 201110137959A CN 102285085 B CN102285085 B CN 102285085B
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Abstract
The invention discloses a rubber tube extruder head of a rubber and plastic extruder without the need of eccentric adjustment, which comprises a machine body (1), a flow channel body (2), a machine head seat (3), a machine head gland (4), a core pattern seat (5), a core pattern (6), a mouth pattern seat (7), a mouth pattern (8), a mouth pattern gland (9), a mouth pattern electric heating ring (10) and a snap-gauge (11). The mouth pattern and the mouth pattern seat as well as the mouth pattern seat and the mouth pattern gland are integrally connected through precise concentric static cooperation, the core pattern seat and the flow channel body are in transitional fit, the machine body and the flow channel body are in conical surface centripetal fit, and simultaneously the mouth pattern gland is provided with the mouth pattern electric heating ring. Concentricity drifting is avoided through precise fit, and the heating of the mouth pattern electric heating ring is controlled to avoid the risk of overpressure, so labor, time and materials are saved, the production efficiency is improved, the qualification rate is increased and hidden overpressure danger is eliminated in rubber tube extrusion production.
Description
Technical field
The present invention relates to a kind of head of rubber and plastic extruder, specifically refer to be applied on the rubber and plastic extruder, be used for a kind of sebific duct extruder head that need not to regulate eccentric rubber and plastic extruder of extrusion molding rubber tube purposes.
Background technology
The rubber and plastic cross-head is the vitals of extruder, and head is installed in the extruder barrel port of export, cooperates with extrusion screw rod; Rubber process screw rod in extruder barrel rotates and heats up, plastifies and compression, and formation is easily flowed, the elastic fluid of moulding, a final process mouthful mould formation extruded product.
The sebific duct extruder head of prior art is in order to guarantee the uniformity of extrusion molding sebific duct wall thickness, in the uniform set screw that are provided with concentricity between four adjusting shape of the mouth as one speaks and the core pattern on the eccentric mounting circumference of head, when extruder is extruded work, according to the deviation of measuring extrusion molding sebific duct wall thickness, by manually correcting the offset of the shape of the mouth as one speaks by set screw; In the actual production, the head of this structure since the cooperation of body, temperature whether all even set screw take place looseningly all can cause concentricity to change, therefore need operating personnel's periodic monitor in time to correct; Degree of eccentricity tool is difficult to regulate, and needs the higher skilled worker worker's operation of technical ability, otherwise eccentric difficult control can occur, or phenomenons such as symmetry off-centre, wall unevenness occur, causes defective products outflow, waste material and influences productive temp;
In addition, change when extruding the different materials product, all need to readjust offset, during the consumption expenses of labour, waste material, increase cost; In addition, the temperature of the shape of the mouth as one speaks is to carry out the temperature transmission by the cross-head heating, and the temperature transmission is slow and inhomogeneous, influences product and extrudes size and outward appearance, also has superpressure hidden danger; Therefore, prior art exists concentricity easily to drift about, and regulates that offset is time-consuming, waste material, production efficiency are low, easily go out the problems and shortcomings of defective products and superpressure hidden danger.
Summary of the invention
Problems and shortcomings at above-mentioned prior art existence, the present invention is with cooperating between the shape of the mouth as one speaks and the shape of the mouth as one speaks seat, adopt accurate concentric stationary fit to be connected to one cooperating between shape of the mouth as one speaks seat and the shape of the mouth as one speaks gland, cooperating between core pattern seat and the runner body 2 adopted interference fits, body and runner body are adopted the taper seat stationary fit, the technical scheme of shape of the mouth as one speaks electric heating coil is set at the outer wall of shape of the mouth as one speaks gland simultaneously, a kind of sebific duct extruder head that need not to regulate eccentric rubber and plastic extruder is provided, be intended to the mode by precision-fit, make the sebific duct extruder head avoid the concentricity drift, need not to regulate eccentric during work, by the heating of control shape of the mouth as one speaks electric heating coil, make the sebific duct extruder head avoid facing the superpressure risk because shape of the mouth as one speaks temperature is on the low side, reach saving of work and time, economical with materials, enhance productivity, improve the purpose of accepted product percentage and elimination superpressure hidden danger.
The object of the present invention is achieved like this: a kind of sebific duct extruder head that need not to regulate eccentric rubber and plastic extruder, comprise body, the runner body, headstock, the headstock gland, the core pattern seat, core pattern, shape of the mouth as one speaks seat, the shape of the mouth as one speaks, shape of the mouth as one speaks gland, shape of the mouth as one speaks electric heating coil, clamp, wherein: be provided with the tubular steel components of hollow circuit cylinder that pre-small post-large circular cone step central through hole constitutes centered by the described body, the front port place of body is provided with the preceding internal thread stepped hole that is connected with described shape of the mouth as one speaks gland, and the rear end face of body is provided with the blind screw hole that some and described runner body is connected; The cylinder of body top is provided with described headstock and is connected, and the last internal thread stepped hole that communicates with the big frustum of a cone stage of the central through hole of body;
Be provided with circular clear opening centered by the described runner body, the outside is pre-small post-large conical steel components, the center of runner body is provided with circular clear opening, the front portion of the taper seat of runner body is laid with the runner that some grooves parallel with the axis of runner body constitute, the rear end of described runner also is provided with the splitter box that communicates with the rear end of runner that constitutes around groove runner body taper seat, annular, during assembling, described splitter box is corresponding with the last internal thread stepped hole position of described body; The rear end of runner body is provided with the flange that flange constitutes, and flange face is provided with the open-work corresponding with the blind screw hole of described body; The interior rear portion taper seat corresponding matching of the outer rear portion taper seat of runner body and body;
Described headstock is for steel components on the port of export that described body is connected extruder barrel by the headstock gland, cylinder step hollow tubular, the lower end of headstock is provided with the following external screw thread that cooperates with the last internal thread stepped hole of described body, the upper end of headstock is provided with the last external screw thread that cooperates with described headstock gland, and the center of headstock is provided with the funnelform pore of truncated cone;
Described headstock gland is the steel components for the annular on the port of export that described headstock is connected extruder barrel, and the ring-shaped inner wall of headstock gland is provided with the internal thread that cooperates with the last external screw thread of described headstock;
Described core pattern seat is the steel components for the straight tube pipe shape that connects described core pattern, and the front end of core pattern seat is provided with the internal thread that connects described core pattern, and the rear end of core pattern seat is provided with the external screw thread that connects described clamp;
Described core pattern is that the outside is pre-small post-large truncated cone, the center be provided with straight-through circular hole steel components, the rear portion of core pattern is provided with the external screw thread that is connected with described core pattern seat front end;
Described shape of the mouth as one speaks seat is the steel components for the cylindrical of carrying the described shape of the mouth as one speaks, and the front end center of shape of the mouth as one speaks seat is provided with the step recess of the described shape of the mouth as one speaks cylindrical of stationary fit;
The described shape of the mouth as one speaks is the steel components of annular, and the annular inner wall of the shape of the mouth as one speaks is hyperboloid shape;
Described shape of the mouth as one speaks gland is for being used for the steel components that the described shape of the mouth as one speaks seat of carrying is connected the cylinder step tubulose of described body front port, the outer front portion of shape of the mouth as one speaks gland is provided with the flange step that described shape of the mouth as one speaks electric heating coil is installed, the outer rear portion of shape of the mouth as one speaks gland is provided with the external screw thread that the preceding internal thread stepped hole with described body is connected, and the center, rear end of shape of the mouth as one speaks gland is provided with the step recess of the described shape of the mouth as one speaks seat of stationary fit cylindrical;
Described shape of the mouth as one speaks electric heating coil is the outer front portion that is installed in described shape of the mouth as one speaks gland, and the electric heater unit of heat is provided to the described shape of the mouth as one speaks;
Described clamp is the blind flange device that is installed in the steel of described core pattern base rear end, clamp is used for the rear end of shutoff core pattern seat, the rear end face that connects described runner body simultaneously by screw, be used for to regulate fixing core pattern seat slide insertion runner body center clear opening the position and vacuumize the core pattern purposes extruding to install additional when vacuumizing;
The runner body inserts the body from the rear end of body, and the interior rear portion taper seat corresponding matching of the outer rear portion taper seat of runner body and body is fixed on the runner body in the body by the open-work on the runner body flange face with screw; Headstock is connected the top of body by screwing into the last internal thread stepped hole of body down; The headstock gland is connected the top of headstock by the last external screw thread of internal thread screw-in headstock; The internal thread that screws into core pattern seat front end at core pattern rear portion is connected the front end of core pattern seat, and the runner body is passed from the front end interference fits of runner body in the rear end of core pattern seat, and the rear end of core pattern seat connects clamp, and clamp is connected the rear end face of runner body by screw; Shape of the mouth as one speaks stationary fit is in the step recess of shape of the mouth as one speaks seat front end, and the stationary fit of shape of the mouth as one speaks seat is in the step recess of shape of the mouth as one speaks gland rear end, and the preceding internal thread stepped hole that screws into the body front end of shape of the mouth as one speaks gland is connected the front end of body 1; Shape of the mouth as one speaks electric heating coil 10 is installed on the shape of the mouth as one speaks gland 9 outer anterior flange steps.
Operation principle
Because the shape of the mouth as one speaks and shape of the mouth as one speaks seat, shape of the mouth as one speaks seat and shape of the mouth as one speaks gland adopt the stationary fit that connects as one, core pattern seat and runner body adopt accurate interference fits, body adopts taper seat entad to cooperate automatically with the runner body, makes the sebific duct extruder head avoid the drift of concentricity, need not to regulate eccentric during work; Owing at the shape of the mouth as one speaks gland shape of the mouth as one speaks electric heating coil is set, directly heat shape of the mouth as one speaks temperature by control shape of the mouth as one speaks electric heating coil, the sebific duct extruder head is avoided because of the shape of the mouth as one speaks temperature hidden danger that faces superpressure on the low side.
Above-mentioned, the present invention is with cooperating between the shape of the mouth as one speaks and the shape of the mouth as one speaks seat, adopt accurate concentric stationary fit to be connected to one cooperating between shape of the mouth as one speaks seat and the shape of the mouth as one speaks gland, cooperating between core pattern seat and the runner body adopted interference fits, adopt taper seat to cooperate body and runner body, the technical scheme of shape of the mouth as one speaks electric heating coil is set at the outer wall of shape of the mouth as one speaks gland simultaneously, having overcome prior art exists concentricity easily to drift about, the adjusting offset is time-consuming, waste material, production efficiency is low, easily go out the problems and shortcomings of defective products and superpressure hidden danger, a kind of sebific duct extruder head that need not to regulate eccentric rubber and plastic extruder that provides, mode by precision-fit, make the sebific duct extruder head avoid the concentricity drift, need not to regulate eccentric during work, by the heating of control shape of the mouth as one speaks electric heating coil, make the sebific duct extruder head avoid having reached saving of work and time because of the shape of the mouth as one speaks temperature risk that faces superpressure on the low side, economical with materials, enhance productivity, improve the purpose of accepted product percentage and elimination superpressure hidden danger.
Description of drawings
Fig. 1 is the structural representation that need not to regulate the sebific duct extruder head of eccentric rubber and plastic extruder of the present invention.
Be described in further detail below in conjunction with the present invention of the embodiment in the accompanying drawing, but should not be construed as any limitation of the invention.
Among the figure: body 1, runner body 2, headstock 3, headstock gland 4, core pattern seat 5, core pattern 6, shape of the mouth as one speaks seat 7, the shape of the mouth as one speaks 8, shape of the mouth as one speaks gland 9, shape of the mouth as one speaks electric heating coil 10, clamp 11.
The specific embodiment
Consult Fig. 1, a kind of sebific duct extruder head that need not to regulate eccentric rubber and plastic extruder of the present invention, comprise body 1, runner body 2, headstock 3, headstock gland 4, core pattern seat 5, core pattern 6, shape of the mouth as one speaks seat 7, the shape of the mouth as one speaks 8, shape of the mouth as one speaks gland 9, shape of the mouth as one speaks electric heating coil 10, clamp 11, wherein: be provided with the tubular steel components of hollow circuit cylinder that pre-small post-large circular cone step central through hole constitutes centered by the described body 1, the front port place of body 1 is provided with the preceding internal thread stepped hole that is connected with described shape of the mouth as one speaks gland 9, and the rear end face of body 1 is provided with the blind screw hole that some and described runner body 2 is connected; The cylinder of body 1 top is provided with described headstock 3 and is connected, and the last internal thread stepped hole that communicates with the big frustum of a cone stage of the central through hole of body 1;
Be provided with circular clear opening centered by the described runner body 2, the outside is pre-small post-large conical steel components, the center of runner body 2 is provided with circular clear opening, the front portion of the taper seat of runner body 2 is laid with the runner that some grooves parallel with the axis of runner body 2 constitute, the rear end of described runner also is provided with the splitter box that communicates with the rear end of runner that constitutes around groove runner body 2 taper seats, annular, during assembling, described splitter box is corresponding with the last internal thread stepped hole position of described body 1; The rear end of runner body 2 is provided with the flange that flange constitutes, and flange face is provided with the open-work corresponding with the blind screw hole of described body 1; The interior rear portion taper seat corresponding matching of the outer rear portion taper seat of runner body 2 and body 1;
Described headstock 3 is for steel components on the port of export that described body 1 is connected extruder barrel by headstock gland 4, cylinder step hollow tubular, the lower end of headstock 3 is provided with the following external screw thread that cooperates with the last internal thread stepped hole of described body 1, the upper end of headstock 3 is provided with the last external screw thread that cooperates with described headstock gland 4, and the center of headstock 3 is provided with the funnelform pore of truncated cone;
Described headstock gland 4 is the steel components for the annular on the port of export that described headstock 3 is connected extruder barrel, and the ring-shaped inner wall of headstock gland 4 is provided with the internal thread that cooperates with the last external screw thread of described headstock 3;
Described core pattern seat 5 is the steel components for the straight tube pipe shape that connects described core pattern 6, and the front end of core pattern seat 5 is provided with the internal thread that connects described core pattern 6, and the rear end of core pattern seat 5 is provided with the external screw thread that connects described clamp 11;
Described core pattern 6 is pre-small post-large truncated cone for the outside, the center be provided with straight-through circular hole steel components, the rear portion of core pattern 6 is provided with the external screw thread that is connected with described core pattern seat 5 front ends;
Described shape of the mouth as one speaks seat 7 is the steel components for the cylindrical of carrying the described shape of the mouth as one speaks 8, and the front end center of shape of the mouth as one speaks seat 7 is provided with the step recess of the described shape of the mouth as one speaks 8 cylindricals of stationary fit;
The described shape of the mouth as one speaks 8 is the steel components of annular, and the annular inner wall of the shape of the mouth as one speaks 8 is hyperboloid shape;
Described shape of the mouth as one speaks gland 9 is for being used for the steel components that the described shape of the mouth as one speaks seat 7 of carrying is connected the cylinder step tubulose of described body 1 front port, the outer front portion of shape of the mouth as one speaks gland 9 is provided with the flange step that described shape of the mouth as one speaks electric heating coil 10 is installed, the outer rear portion of shape of the mouth as one speaks gland 9 is provided with the external screw thread that the preceding internal thread stepped hole with described body 1 is connected, and the center, rear end of shape of the mouth as one speaks gland 9 is provided with the step recess of described shape of the mouth as one speaks seat 7 cylindricals of stationary fit;
Described shape of the mouth as one speaks electric heating coil 10 provides the electric heater unit of heat for being installed in the outer front portion of described shape of the mouth as one speaks gland 9 to the described shape of the mouth as one speaks 8;
Described clamp 11 is the blind flange device that is installed in the steel of described core pattern seat 5 rear ends, clamp 11 is used for the rear end of shutoff core pattern seat 5, the rear end face that connects described runner body 2 simultaneously by screw, be used for to regulate fixing core pattern seat 5 slide insertion runner bodies 2 centers clear opening the position and vacuumize the core pattern purposes extruding to install additional when vacuumizing;
Operation principle
Because the shape of the mouth as one speaks 8 adopts the stationary fit that connects as one with shape of the mouth as one speaks seat 7, shape of the mouth as one speaks seat 7 with shape of the mouth as one speaks gland 9, core pattern seat 5 adopts accurate interference fits with runner body 2, body 1 adopts taper seat entad to cooperate automatically with runner body 2, make the sebific duct extruder head avoid the drift of concentricity, need not to regulate eccentric during work; Owing at shape of the mouth as one speaks gland 9 shape of the mouth as one speaks electric heating coil 10 is set, directly heat the shape of the mouth as one speaks 8 temperature by control shape of the mouth as one speaks electric heating coil 10, the sebific duct extruder head is avoided because of the shape of the mouth as one speaks 8 temperature hidden danger that faces superpressure on the low side.
Claims (1)
1. sebific duct extruder head that need not to regulate eccentric rubber and plastic extruder, it is characterized in that: comprise body (1), runner body (2), headstock (3), headstock gland (4), core pattern seat (5), core pattern (6), shape of the mouth as one speaks seat (7), the shape of the mouth as one speaks (8), shape of the mouth as one speaks gland (9), shape of the mouth as one speaks electric heating coil (10), clamp (11), be provided with the tubular steel components of hollow circuit cylinder that pre-small post-large circular cone step central through hole constitutes centered by the described body (1), the front port place of body (1) is provided with the preceding internal thread stepped hole that is connected with described shape of the mouth as one speaks gland (9), and the rear end face of body (1) is provided with the blind screw hole that some and described runner body (2) is connected; The cylinder of body (1) top is provided with described headstock (3) and is connected, and the last internal thread stepped hole that communicates with the big frustum of a cone stage of the central through hole of body (1);
Be provided with circular clear opening centered by the described runner body (2), the outside is pre-small post-large conical steel components, the center of runner body (2) is provided with circular clear opening, the front portion of the taper seat of runner body (2) is laid with the runner that some grooves parallel with the axis of runner body (2) constitute, the rear end of described runner also is provided with the splitter box that communicates with the rear end of runner that constitutes around groove runner body (2) taper seat, annular, during assembling, described splitter box is corresponding with the last internal thread stepped hole position of described body (1); The rear end of runner body (2) is provided with the flange that flange constitutes, and flange face is provided with the open-work corresponding with the blind screw hole of described body (1); The interior rear portion taper seat corresponding matching of the outer rear portion taper seat of runner body (2) and body (1);
Described headstock (3) is for steel components on the port of export that described body (1) is connected extruder barrel by headstock gland (4), cylinder step hollow tubular, the lower end of headstock (3) is provided with the following external screw thread that cooperates with the last internal thread stepped hole of described body (1), the upper end of headstock (3) is provided with the last external screw thread that cooperates with described headstock gland (4), and the center of headstock (3) is provided with the funnelform pore of truncated cone;
Described headstock gland (4) is the steel components for the annular on the port of export that described headstock (3) is connected extruder barrel, and the ring-shaped inner wall of headstock gland (4) is provided with the internal thread that cooperates with the last external screw thread of described headstock (3);
Described core pattern seat (5) is the steel components for the straight tube pipe shape that connects described core pattern (6), and the front end of core pattern seat (5) is provided with the internal thread that connects described core pattern (6), and the rear end of core pattern seat (5) is provided with the external screw thread that connects described clamp (11);
Described core pattern (6) is pre-small post-large truncated cone for the outside, the center be provided with straight-through circular hole steel components, the rear portion of core pattern (6) is provided with the external screw thread that is connected with described core pattern seat (5) front end;
Described shape of the mouth as one speaks seat (7) is the steel components for the cylindrical of carrying the described shape of the mouth as one speaks (8), and the front end center of shape of the mouth as one speaks seat (7) is provided with the step recess of the described shape of the mouth as one speaks of stationary fit (8) cylindrical;
The described shape of the mouth as one speaks (8) is the steel components of annular, and the annular inner wall of the shape of the mouth as one speaks (8) is hyperboloid shape;
Described shape of the mouth as one speaks gland (9) is for being used for the steel components that the described shape of the mouth as one speaks seat of carrying (7) is connected the cylinder step tubulose of described body (1) front port, the outer front portion of shape of the mouth as one speaks gland (9) is provided with the flange step that described shape of the mouth as one speaks electric heating coil (10) is installed, the outer rear portion of shape of the mouth as one speaks gland (9) is provided with the external screw thread that the preceding internal thread stepped hole with described body (1) is connected, and the center, rear end of shape of the mouth as one speaks gland (9) is provided with the step recess of the described shape of the mouth as one speaks seat of stationary fit (7) cylindrical;
Described shape of the mouth as one speaks electric heating coil (10) provides the electric heater unit of heat for being installed in the outer front portion of described shape of the mouth as one speaks gland (9) to the described shape of the mouth as one speaks (8);
Described clamp (11) is the blind flange device that is installed in the steel of described core pattern seat (5) rear end, and clamp (11) shutoff connects the rear end face of described runner body (2) simultaneously in the rear end of core pattern seat (5) by screw;
Runner body (2) inserts the body (1) from the rear end of body (1), the interior rear portion taper seat corresponding matching of the outer rear portion taper seat of runner body (2) and body (1) is fixed on runner body (2) in the body (1) by the open-work on runner body (2) flange face with screw; Headstock (3) is connected the top of body (1) by screwing into the last internal thread stepped hole of body (1) down; Headstock gland (4) is connected the top of headstock (3) by the last external screw thread of internal thread screw-in headstock (3); The internal thread that screws into core pattern seat (5) front end at core pattern (6) rear portion, be connected the front end of core pattern seat (5), runner body (2) is passed from the front end interference fits of runner body (2) in the rear end of core pattern seat (5), the rear end of core pattern seat (5) connects clamp (11), and clamp (11) is connected the rear end face of runner body (2) by screw; The shape of the mouth as one speaks (8) stationary fit is in the step recess of shape of the mouth as one speaks seat (7) front end, shape of the mouth as one speaks seat (7) stationary fit is in the step recess of shape of the mouth as one speaks gland (9) rear end, the preceding internal thread stepped hole that screws into body (1) front end of shape of the mouth as one speaks gland (9) is connected the front end of body (1); Shape of the mouth as one speaks electric heating coil (10) is installed on the outer anterior flange step of shape of the mouth as one speaks gland (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101379596A CN102285085B (en) | 2011-05-15 | 2011-05-15 | Rubber tube extruder head of rubber and plastic extruder without need of eccentric adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101379596A CN102285085B (en) | 2011-05-15 | 2011-05-15 | Rubber tube extruder head of rubber and plastic extruder without need of eccentric adjustment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102285085A CN102285085A (en) | 2011-12-21 |
| CN102285085B true CN102285085B (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101379596A Expired - Fee Related CN102285085B (en) | 2011-05-15 | 2011-05-15 | Rubber tube extruder head of rubber and plastic extruder without need of eccentric adjustment |
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| CN (1) | CN102285085B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615805B (en) * | 2012-03-22 | 2015-01-28 | 大连理工大学 | Right-angle extrusion die for multi-cavity plastic micro-pipe |
| CN104210085A (en) * | 2014-09-24 | 2014-12-17 | 瓮安县武江隆塑业有限责任公司 | Die head of plastic extruding machine |
| CN105082503B (en) * | 2015-09-16 | 2017-09-29 | 成都爆米花信息技术有限公司 | A kind of rubber pipe extruder head |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6716021B2 (en) * | 2001-08-07 | 2004-04-06 | Dayco Products, Llc | Crosshead extrusion system |
| JP2003211521A (en) * | 2002-01-17 | 2003-07-29 | Kinugawa Rubber Ind Co Ltd | Mold for extrusion molding of hollow pipe |
| CN2536383Y (en) * | 2002-05-13 | 2003-02-19 | 白德山 | Injection mould for polyvinyl pipes with superhigh molecular weight by shunt off in core |
| JP2009000912A (en) * | 2007-06-21 | 2009-01-08 | Bando Chem Ind Ltd | Extrusion-molding die head |
| CN201740896U (en) * | 2010-07-07 | 2011-02-09 | 中纤伟业科技发展（北京）有限公司 | Mold for manufacturing optical cables without adjusting eccentricity |
| CN202045850U (en) * | 2011-05-15 | 2011-11-23 | 宁波市天基汽车部件有限公司 | Rubber pipe extrusion handpiece of rubber extrusion machine without eccentricity regulation |
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Granted publication date: 20130925 Termination date: 20160515 |