CN202702577U - Rubber extruder machine head with extensible mandril - Google Patents
Rubber extruder machine head with extensible mandril Download PDFInfo
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- CN202702577U CN202702577U CN2012204243051U CN201220424305U CN202702577U CN 202702577 U CN202702577 U CN 202702577U CN 2012204243051 U CN2012204243051 U CN 2012204243051U CN 201220424305 U CN201220424305 U CN 201220424305U CN 202702577 U CN202702577 U CN 202702577U
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- rubber
- mandril
- sheath
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Abstract
The utility model discloses a rubber extruder machine head with an extensible mandril. The rubber extruder machine head with the extensible mandril comprises a machine body provided with a rubber flow passage inside. One side of the machine body is provided with a rubber feeding inlet, the front end of the machine body is further provided with an extrusion mold. The extrusion mold is provided with a rubber discharge outlet. The mandril is arranged in the flow passage. The front end of the mandril extends out of the rubber discharge outlet. The mandril and the rubber discharge outlet jointly form a rubber extrusive mouth shape. The front end of the mandril along axial direction is provided with a plurality of different sections. The mandril is extensible along rubber discharging direction. The outer wall of the middle portion of the mandril is in tightly sleeve fit with a protective sleeve extending backwards. The back end of the protective sleeve is sealed and fixed on the machine body. The protective sleeve is of hollow structure. The protective sleeve and the machine body jointly form a cavity which can reduce resistance of the mandril moving front and back. According to an extensible variable cross-section mandril, a variable cross-section rubble tube can be produced continuously. Due to the arrangement of the protective sleeve structure at the out side of the middle-back portion of the mandril, resistance of mandril extensible movement is reduced.
Description
Technical field
The utility model belongs to the rubber-moulding apparatus field, relates to a kind of head of rubber extruder, particularly a kind of head of rubber extruder with flexible plug.
Technical background
The head of Rubber Extruder is rubber extrusion forming equipment, and raw material is extruded forward in the runner of head, and by given shape the mouth mould as gum outlet, extrusion molding.Common head of rubber extruder mouth mould shape is fixed; CN201761052U patent document such as Patent Office of the People's Republic of China's bulletin on March 16th, 2011; name is called improved structure of head of rubber extruder; can only produce continuously the rubber of constant cross-section; produce to shut down with the rubber in cross section and more do not change a mouthful mould; not only affect production efficiency, and can't produce the continuous rubber strip of different cross section.And some rubber strip or rubber tube need to be suitable for specific field, need to have different cross sections in different segmentations, the location of contrast agent delivery pipe that medically uses as shown in Figure 1, need to be designed to leading portion is hollow circular-tube, the stage casing is the pipe that includes the right-angled intersection rib, back segment then need to have axial slit at the tube wall that includes the right-angled intersection rib and flow out for developer solution, section has different cross sections before, during and after the rubber tube of this structure, and need to be continuously shaped, obviously adopt traditional head of rubber extruder can't realize one-shot forming.Produce tubular rubber and need to plug be set at gum outlet, plug and gum outlet form the shape of the mouth as one speaks of ring-type, with extruded rubber, traditional extruder plug is fixed structure, can only extrude a kind of tubular rubber of cross section, for the rubber tube of above-mentioned variable cross-section, obviously can't one-shot forming.
Summary of the invention
Plug was generally changeless structure when the purpose of this utility model was for present head of rubber extruder production tubular rubber, can only produce the problem of a kind of cross section rubber tube, provide a kind of plug scalable, can produce continuously the head of rubber extruder of variable cross-section rubber tube, and solve the problem that is subject to rubber retardance in the runner in the plug telescopic process.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of head of rubber extruder with flexible plug, establish the body of rubber runner in comprising, one side of body is provided with glue-feeder, the front end of body also is provided with a mouthful mould, the mouth mould is provided with gum outlet, be provided with plug in the described runner, the front end of plug stretches out from gum outlet, plug and gum outlet consist of the shape of the mouth as one speaks of rubber extruding jointly, described plug front end edge axially has some different cross sections, plug can be flexible along the plastic emitting direction, the middle part outer wall of plug closely cooperates and is arranged with the sheath that extends backward, the back-end sealing of sheath is fixed on the body, and sheath is hollow structure, and sheath and body consist of the cavity that reduces the elastic resistance of plug jointly.The position difference that plug is flexible, having different plug cross sections aligns with gum outlet, extrude difform tubular rubber, in the elastic process of plug, can be subject to the retardance of rubber in the runner, cause flexible not smooth, therefore sheath is set, the sheath front end closely cooperates and is socketed the outer surface of plug again, and the cavity that sheath and body consist of guarantees that cavity was interior movable again when the later part in plug stage casing was flexible, avoid being subject to the retardance of rubber, the outer surface of sheath is then as the part of flow path wall.Such structure reduces the length that plug gos deep into runner to greatest extent, reduce flexible retardance, and in order to increase mandril strength, plug can be set to the step rod that the external diameter change is large backward, and the retardance that the step place is subjected to is larger, can say that therefore the step that external diameter changes greatly is arranged in the cavity of sheath, reduce retardance, and the plug that stretches out sheath can be less if do not establish step, the less step of change in size perhaps is set, to adapt to the needs of plug front end operate portions.
As preferably, the end face of described plug offers the spew groove that connects the plug two sides, and the plug of spew groove rear end has one section solid light rod body, when plug protracts, solid section of plug aligns with gum outlet, and during described plug retrude, the spew groove section of plug is alignd with gum outlet.When plug stretched out, solid light rod body alignd with gum outlet, formed the shape of the mouth as one speaks of ring-type, and the rubber strip that extrude this moment is the round rubber pipe; When plug is retracted, the side of spew groove alignment gum outlet, and bottom land is positioned at the inboard of gum outlet, rubber flows in the spew groove from the bottom land of spew groove, and together extrudes with the ring-type shape of the mouth as one speaks from notch, forms inner rubber tube with rib.Two kinds of shape of the mouth as one speaks can be switched in real time with plug is flexible, need not to shut down the replacement port mould, can produce continuously the rubber tube of variable cross-section.
As preferably, described gum outlet is round mouth, and the plug front end is the polished rod cylindricality, and described spew groove comprises two of right-angled intersection, and two spew grooves connect respectively the plug side.Gum outlet can form in the pipe shape of the mouth as one speaks and the pipe shape of the mouth as one speaks with the cross rib.
As preferably, the drops of the bottom land cross section of described spew groove for heaving to both sides.Increase enters the bore of spew groove from runner, ensures that the rubber that enters spew groove is sufficient, improves yield rate.
As preferably, be provided with the cutting knife of some expandables outside the described gum outlet, the end edge of a knife was resisted against the plug side when cutting knife stretched out, the edge of a knife and spew groove mutual dislocation.When the edge of a knife was resisted against mandrel surface, rubber tube was directly cut by the edge of a knife after extruding gum outlet, formed axial slit, can form side band radial gap, in establish the rubber pipeline section of rib.
As preferably, described cutting knife is four, evenly arranges at circumferencial direction.Corresponding with the cross rib, be opened in the slit of staggering in the rib position at the sidewall of rubber tube.
As preferably, described plug rear end has the ledge structure that external diameter increases, and it is inboard that described ledge structure is positioned at the cavity of sheath.The part that ledge structure is changed greatly is arranged in the cavity, and resistance is less.
As preferably, the rear end of described plug is connected with and drives the flexible push rod of plug, and the connecting portion of described plug and push rod is in the cavity of sheath, and plug has the ledge structure of external diameter increase again with the push rod junction.Plug and push rod are Split type structure, are conducive to change and reconfigure.Plug has the ledge structure that external diameter increases with the push rod junction again, increases the reliability that connects.
As preferably, the push rod side is provided with axial gathering sill, and described putting back-end is provided with external screw thread, putting back-end peripheral hardware pivoted housing, and pivoted housing is provided with the internal thread that cooperates with putting back-end, and pivoted housing and push rod form screw rod transmission.It is elastic to adopt the structure of screw mandrel to drive plug, and pivoted housing can adopt motor-driven, and it is flexible also can to adopt the mode such as hydraulic push rod to drive plug.
As preferably, described body comprises the runner body at body fuselage and center, establish conical cavity in the body fuselage, the runner body is the taper entity, body fuselage and runner body consist of the tapered annular runner around the tapered runner body cone, described sheath profile is taper, and sheath is fixed on the front end of runner body as the vertex of a cone part of runner body.The back-end sealing of sheath is fixed on the front end of runner body, the pyramidal structure of sheath Front-end Design for matching with runner, and push rod passes the axial line setting of runner body, and in the cooperation place of runner body and push rod axial guide frame is set.
The utility model adopts telescopic plug to cooperate from gum outlet and forms the different plastic emitting shape of the mouth as one speaks that can regulate in real time, can not shut down the rubber tube of continuous production variable cross-section; Postmedian arranged outside jacket structure at plug, movable in the cavity when making the postmedian of plug flexible in sheath, reduce the length that plug is arranged in runner, and the ledge structure of plug is arranged in the sheath, reduced flexible retardance, made the machine operation more reliable.
Description of drawings
Fig. 1 is the location of contrast agent delivery duct ligation composition with three sections different cross sections;
Fig. 2 is a kind of structural representation of the utility model;
Fig. 3 is the sectional view of A-O-A among the utility model Fig. 2;
Fig. 4 is the utility model core rod end structural representation;
Fig. 5 is the structural representation of the utility model front end face;
Fig. 6 is the structural representation of the utility model gum outlet place's plug and cutting knife.
Among the figure: 1. location of contrast agent delivery pipe, 2. body, 3. glue-feeder, 4. runner body, 5. runner, 6. sheath, 7. cavity, 8. gum outlet, 9. plug, 10. mouthful mould, 11. cutting knifes, 12. push rods, 13. pivoted housings, 14. motors, 15. cooling joints, 16. spew grooves.
The specific embodiment
Also by reference to the accompanying drawings the utility model is further specified below by specific embodiment.
Embodiment: a kind of production is the head of rubber extruder with flexible plug of location of contrast agent delivery pipe as shown in Figure 1.Location of contrast agent delivery pipe 1 shown in Figure 1 is divided into three sections of different cross section, and leading portion is hollow circular-tube, and the stage casing is the inner pipe that is provided with the cross rib, back segment be inside with the cross rib, tube wall be provided with extend axially and with the rib position pipe in slit that staggers.
Such as Fig. 2, shown in Figure 3, this device comprises body 2, and the inside of body 2 is provided with runner 5, and a side of body 2 is provided with glue-feeder 3, and the top of body also is provided with the cooling joint 15 of delivery cycle cooling fluid.Body 2 comprises the runner body 4 that the body fuselage that includes conical cavity and outer surface are taper, and body fuselage and runner body consist of the tapered annular runner 5 around runner body 4.The top of tapered runner 5 is provided with mouthful mould 10, and mouthful mould 10 centers are provided with circular gum outlet 8, and the center of gum outlet 8 is provided with plug 9, plug 9 and the gum outlet 8 common shape of the mouth as one speaks that consist of rubber extruding.Plug 9 can be elastic along the plastic emitting direction, the rear end of plug is passed runner 5 and is stretched in the runner body 4, the front end of runner body 4 is fixed with sheath 6, sheath is taper, sheath rear end screw thread is fixed on runner body 4 front ends as the vertex of a cone of runner body, the outer surface of sheath is as the part of flow path wall, plug 9 stage casings and front end are cylindrical, the front end sleeve of sheath is located at the surface in plug stage casing, utilize higher machining accuracy to reach sealing, prevent that the rubber in the runner 5 from entering in the sheath 6, sheath 6 inside have cavity 7, plug 9 rear portions cavity 7 interior when flexible resistance less.The rear end of plug 9 is connected with push rod 12, and plug 9 has the ledge structure that external diameter increases with push rod 12 junctions, and push rod 12 passes runner body 4 along the axis, and push rod 12 shafts are provided with gathering sill restriction push rod can only axial stretching; The runner body is stretched out in push rod 12 rear ends, and the rear end of push rod has external thread structure, and putting back-end is provided with pivoted housing 13 outward, and pivoted housing is provided with the internal thread that cooperates with push rod; Motor 14 rotates by deceleration transmission rear drive pivoted housing 13, and pivoted housing 13 forms screw rod transmission with push rod 12 and cooperates, and it is flexible to drive push rod.Runner body 4, push rod 12, plug 9, sheath 6, gum outlet 8 are positioned on the same axis.
Plug 9 front-end architectures as shown in Figure 4, plug 9 front end external diameters are less than the external diameter in stage casing, the poor external diameter much smaller than step place, plug rear end of the external diameter in plug 9 front ends and stage casing is poor.The front end of plug 9 is the polished rod cylindricality, and the both ends that offer spew groove 16, two spew grooves 16 of two right-angled intersections on the end face connect respectively the side of plug, the drops of the bottom section of spew groove 16 for heaving to both sides.The plug of spew groove 16 rear sides is the barred body of solid polished rod.When plug 9 protracted, solid section of plug front end alignd with gum outlet 8, and during plug 9 retrude, the spew groove of plug front end aligns with gum outlet, and this moment, the plug end face was positioned at the gum outlet outside, and the bottom land of spew groove is positioned at the gum outlet inboard.
Such as Fig. 5, shown in Figure 6, gum outlet 8 outsides also are provided with cutting knife 11, and cutting knife 11 evenly is provided with four at circumferencial direction, cutting knife adopts the hydraulic-driven expandable, when cutting knife inwardly stretched out, the cutting knife 11 front end edges of a knife were resisted against plug 9 surfaces, the spew groove of the edge of a knife and plug mutually stagger 45 the degree.
When plug 9 protracted, solid section of plug front end alignd with gum outlet 8, and what extruded this moment is the hollow rubber pipe, i.e. the leading portion of location of contrast agent delivery pipe 1 among Fig. 1; During plug 9 retrude, the spew groove of plug front end aligns with gum outlet, and this moment, the plug end face was positioned at the gum outlet outside, the bottom land of spew groove is positioned at the gum outlet inboard, the cutting knife external contracting, what extruded this moment is interior rubber tube with the cross rib, i.e. the stage casing of location of contrast agent delivery pipe 1 among Fig. 1; Be resisted against plug 9 surfaces when plug 9 retrudes, cutting knife 11 inwardly stretch out the edge of a knife, what extruded this moment is interior band cross rib, the rubber tube of four axial slits of surface band and rib dislocation.When plug stretched, the postmedian of plug seesawed in the cavity of sheath, was not subjected to the retardance of rubber.
Above-described embodiment is a kind of preferred version of the present utility model, is not the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
The content that is not described in detail in this specification belongs to the known prior art of those skilled in the art.
Claims (10)
1. head of rubber extruder with flexible plug, establish the body of rubber runner in comprising, one side of body is provided with glue-feeder, the front end of body also is provided with a mouthful mould, the mouth mould is provided with gum outlet, it is characterized in that: be provided with plug in the described runner, the front end of plug stretches out from gum outlet, plug and gum outlet consist of the shape of the mouth as one speaks of rubber extruding jointly, and described plug front end edge axially has some different cross sections, and plug can be flexible along the plastic emitting direction, the middle part outer wall of plug closely cooperates and is arranged with the sheath that extends backward, the back-end sealing of sheath is fixed on the body, and sheath is hollow structure, and sheath and body consist of the cavity that reduces the elastic resistance of plug jointly.
2. a kind of head of rubber extruder with flexible plug according to claim 1, it is characterized in that: the end face of described plug offers the spew groove that connects the plug two sides, the plug of spew groove rear end has one section solid light rod body, when plug protracts, solid section of plug aligns with gum outlet, during described plug retrude, the spew groove section of plug is alignd with gum outlet.
3. a kind of head of rubber extruder with flexible plug according to claim 2, it is characterized in that: described gum outlet is round mouth, and the plug front end is the polished rod cylindricality, and described spew groove comprises two of right-angled intersection, and two spew grooves connect respectively the plug side.
4. it is characterized in that according to claim 2 or 3 described a kind of head of rubber extruders with flexible plug: the drops of the bottom land cross section of described spew groove for heaving to both sides.
5. according to claim 2 or 3 described a kind of head of rubber extruders with flexible plug, it is characterized in that: the described gum outlet outside is provided with the cutting knife of some expandables, the end edge of a knife was resisted against the plug side when cutting knife stretched out, the edge of a knife and spew groove mutual dislocation.
6. a kind of head of rubber extruder with flexible plug according to claim 5, it is characterized in that: described cutting knife is four, evenly arranges at circumferencial direction.
7. according to claim 1 and 2 or 3 described a kind of head of rubber extruders with flexible plug, it is characterized in that: described plug rear end has the ledge structure that external diameter increases, and it is inboard that described ledge structure is positioned at the cavity of sheath.
8. according to claim 1 and 2 or 3 described a kind of head of rubber extruders with flexible plug, it is characterized in that: the rear end of described plug is connected with and drives the flexible push rod of plug, the connecting portion of described plug and push rod is in the cavity of sheath, and plug has the ledge structure that external diameter increases with the push rod junction again.
9. a kind of head of rubber extruder with flexible plug according to claim 8, it is characterized in that: the push rod side is provided with axial gathering sill, described putting back-end is provided with external screw thread, putting back-end peripheral hardware pivoted housing, pivoted housing is provided with the internal thread that cooperates with putting back-end, and pivoted housing and push rod form screw rod transmission.
10. according to claim 1 and 2 or 3 described a kind of head of rubber extruders with flexible plug, it is characterized in that: described body comprises the runner body at body fuselage and center, establish conical cavity in the body fuselage, the runner body is the taper entity, body fuselage and runner body consist of the tapered annular runner around the tapered runner body cone, described sheath profile is taper, and sheath is fixed on the front end of runner body as the vertex of a cone part of runner body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204243051U CN202702577U (en) | 2012-08-26 | 2012-08-26 | Rubber extruder machine head with extensible mandril |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204243051U CN202702577U (en) | 2012-08-26 | 2012-08-26 | Rubber extruder machine head with extensible mandril |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202702577U true CN202702577U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204243051U Expired - Lifetime CN202702577U (en) | 2012-08-26 | 2012-08-26 | Rubber extruder machine head with extensible mandril |
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| Country | Link |
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| CN (1) | CN202702577U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102806649A (en) * | 2012-08-26 | 2012-12-05 | 浙江百纳橡塑设备有限公司 | Rubber extruder head with retractable mandrel |
| CN103822032A (en) * | 2014-02-20 | 2014-05-28 | 金华市春光橡塑软管有限公司 | Steam conveying hose and special forming tool for steam conveying hose |
-
2012
- 2012-08-26 CN CN2012204243051U patent/CN202702577U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102806649A (en) * | 2012-08-26 | 2012-12-05 | 浙江百纳橡塑设备有限公司 | Rubber extruder head with retractable mandrel |
| CN102806649B (en) * | 2012-08-26 | 2015-03-25 | 浙江百纳橡塑设备有限公司 | Rubber extruder head with retractable mandrel |
| CN103822032A (en) * | 2014-02-20 | 2014-05-28 | 金华市春光橡塑软管有限公司 | Steam conveying hose and special forming tool for steam conveying hose |
| CN103822032B (en) * | 2014-02-20 | 2017-12-29 | 金华春光橡塑科技股份有限公司 | A kind of steam transfer hose and its special fixture for forming |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |