CN112743795A - Prevent remaining extruder - Google Patents
Prevent remaining extruder Download PDFInfo
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- CN112743795A CN112743795A CN202011529475.1A CN202011529475A CN112743795A CN 112743795 A CN112743795 A CN 112743795A CN 202011529475 A CN202011529475 A CN 202011529475A CN 112743795 A CN112743795 A CN 112743795A
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- die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a residue-preventing extruder, and relates to the field of material screw extrusion molding. The machine head module is characterized by comprising a diffusion machine head, a residual cavity preventing die and an extrusion forming die which are sequentially connected, wherein the diffusion machine head is communicated with a discharge port of the machine barrel, and the diffusion machine head and the residual cavity preventing die are used for guiding materials from the discharge port of the machine barrel to the extrusion forming die; the side wall of the inner cavity of the residue-preventing cavity die is a continuous and smooth curved surface, the caliber of the inner cavity of the residue-preventing cavity die is gradually reduced along the material conveying direction, and the caliber of a discharge port of the inner cavity of the residue-preventing cavity die is smaller than the caliber of an inlet of an extrusion molding die. This extruder has promoted the efficiency of extrusion moulding operation, has reduced the residue of production material in the production process.
Description
Technical Field
The invention relates to the field of material screw extrusion molding, in particular to a residue-preventing extruder.
Background
Extrusion molding is also called extrusion molding in plastic processing, and refers to a processing method for manufacturing products or semi-products with various sections by continuously passing through a machine head through the action between a cylinder of an extruder and a screw rod while being heated and plasticized and being pushed forward by the screw rod. In the extrusion process, raw materials generally enter a machine barrel from a hopper, are conveyed forwards to a feeding section under the action of the rotation of a screw through the friction shearing action of the inner wall of the machine barrel and the surface of the screw, and loose solids are conveyed forwards and compacted at the same time; in the compression section, the depth of the screw groove becomes shallow, the screw groove is further compacted, and simultaneously, under the action of heating outside the machine barrel and friction shearing of the screw and the inner wall of the machine barrel, the material temperature rises and begins to melt, and the compression section is finished; homogenizing, extruding out melt at constant temperature, constant quantity and constant pressure, shaping via die plate, and shaping.
Disclosure of Invention
The material molding surface of the existing extruder head is more vertical to the end surface of the flow direction, the section of the molding discharge port is removed, other ports are material residual sections, the 'dead material' is more easily generated in production, if the 'dead material' is not discharged in time, the screw rod is blocked in the charging barrel to a certain extent after accumulation, and the molding quality of the product is greatly influenced.
Therefore, in the field of material screw extrusion molding, an extruder capable of effectively improving the molding quality of products and avoiding the residual 'dead materials' is urgently needed. Therefore, the invention provides a residual-preventing extruder which solves the problems by the following technical points:
the anti-residue extruder comprises a machine barrel with a screw arranged therein and a machine head module connected to the machine barrel, and is characterized in that the machine head module comprises a diffusion machine head, an anti-residue cavity die and an extrusion molding die which are sequentially connected, wherein the diffusion machine head is communicated with a discharge port of the machine barrel, the diffusion machine head and the anti-residue cavity die are used for guiding materials from the discharge port to the extrusion molding die, and the extrusion molding die is used for molding the materials; the side wall of the inner cavity of the residue-preventing cavity die is a continuous and smooth curved surface, the caliber of the inner cavity of the residue-preventing cavity die is gradually reduced along the material conveying direction, and the caliber of a discharge port of the inner cavity of the residue-preventing cavity die is smaller than the caliber of an inlet of an extrusion molding die.
As described above, the extruder with the residue prevention function provided by the invention is provided with the head module to improve the extrusion molding step in the extrusion process, so as to achieve the technical effects of avoiding the residue of the dead materials and improving the molding quality of the product. The machine head module comprises a diffusion machine head, a residual-preventing cavity die and an extrusion forming die which are sequentially communicated. The machine head module is used for converting plastic melt which is sent out from the outlet of the barrel and is in rotary motion into parallel linear motion, so that the plastic is further plasticized uniformly, and the melt is uniformly and stably led into an extrusion molding grinding tool. The cavity grinding apparatus of preventing remaining in this scheme is as the main bearing structure of material guide, and its inside cavity mould inner chamber lateral wall of preventing remaining that sets up is continuous smooth curved surface, and the bore dwindles along material direction of delivery gradually, and the lateral wall of preventing remaining cavity mould inner chamber is smooth, full, has fully filled dead angle position in the aircraft nose, can reduce the material effectively and remain. The caliber of the discharge hole of the inner cavity of the residue-preventing cavity die is smaller than the caliber of the inlet of the extrusion molding die, so that the phenomenon that a step surface facing the material flow direction becomes a material residue section is avoided, and the technical effect of reducing the dead materials is also achieved. The aircraft nose module that a plurality of subassemblies assembly formed can the dismouting between each subassembly, does benefit to the staff and maintains, cleans each inner chamber to equipment, promotes equipment's reliability and life-span.
The further technical scheme is as follows:
the diffusion aircraft nose inner chamber lateral wall of diffusion aircraft nose is the tubaeform round platform curved surface of internal diameter grow gradually, diffusion aircraft nose inner chamber entry covers the barrel discharge gate completely, prevent remaining cavity mould inner chamber pan feeding mouth and cover diffusion aircraft nose inner chamber discharge gate completely. In the technical characteristics, the inlet of the inner cavity of the diffusion machine head completely covers the discharge hole of the machine barrel, the feeding hole of the inner cavity of the residual-preventing cavity die completely covers the discharge hole of the inner cavity of the diffusion machine head, and the phenomenon that the joint of different structures generates materials and the residual cross section generates dead materials is avoided.
The machine head module also comprises a circular hole die for installing a residue-proof cavity die and an extrusion molding die, wherein the circular hole die is provided with a first step surface for installing the residue-proof cavity die, the circular hole die is provided with a first installation groove for installing the extrusion molding die, the first installation groove extends from the first step surface to the material conveying direction, the size of the first installation groove meets the requirement that the first installation groove can be embedded with the extrusion molding die, and the inlet plane of the extrusion molding die is flush with the first step surface after the extrusion molding die is assembled; the circular hole die is matched and assembled with the diffusion machine head through threads; the anti-residue cavity die is connected and assembled with the round hole die through screw connection, the bottom surface of the anti-residue cavity die is tightly attached to the first step surface, and a plurality of positioning pins are arranged between the anti-residue cavity die and the round hole die and used for completing the positioning of the outlet of the anti-residue cavity die and the inlet of the extrusion molding die. In this technical characteristic, the assembly relation of preventing remaining cavity mould and extrusion moulding mould has specifically been injectd, connects the installation through the round hole mould as installation frame main part promptly, and the round hole mould has realized being connected of extrusion moulding mould and diffusion aircraft nose with diffusion aircraft nose threaded connection simultaneously. Install on first step face prevent remaining cavity mould pass through the screw connection and closely laminate with first step face, again because install the extrusion moulding mould's in first mounting groove top surface and first step face flush, consequently prevent remaining cavity mould also can closely compress tightly, spacing extrusion moulding mould, effectively solve forming die drunkenness fixed problem.
The residual-preventing cavity mold comprises more than one residual-preventing cavity mold inner cavity, and each residual-preventing cavity mold inner cavity is arranged in an inner circumference array on a plane perpendicular to the material conveying direction, and the central line of each residual-preventing cavity mold is a symmetry axis. In this technical characteristic, the setting of a plurality of cavity mould inner chambers of preventing remaining makes and prevents that the extrusion moulding mould that the cavity mould inner chamber matches of remaining also can a plurality of settings, has promoted the discharging efficiency of extruder. The arrangement form of the periphery of the center line of the anti-residue cavity die is arrayed in an array mode, so that materials can fall into the inner cavity of each anti-residue cavity die uniformly and at equal probability, and the efficiency and quality of product extrusion molding are improved.
Prevent remaining being provided with the spreader mounting seat in the cavity mould, the spreader mounting seat extends towards the direction opposite with material direction of delivery from first step face, spreader mounting seat outside surface is the component part of preventing remaining cavity mould inner chamber lateral wall, install the spreader on the spreader mounting seat, the spreader is the cone, and its radius reduces gradually along the direction opposite with material direction of delivery, the central line of spreader with prevent remaining cavity mould central line coincidence. In the technical characteristic, the sprue spreader mounting seat is used for mounting the sprue spreader, the side surface of the sprue spreader mounting seat is used as a component of the inner cavity side wall of the residue-preventing cavity die, and one structure bears two functions, so that a machine head module is more compact. The sprue spreader is matched with the residual-preventing cavity die and the diffusion machine head, and is used for guiding materials to the extrusion forming die to realize the extrusion forming of the materials.
And a flow distribution plate is arranged between the diffusion machine head and the machine barrel. The splitter plate is used for cutting apart the internal cavity of the machine barrel and the machine head module.
The machine barrel is a chute machine barrel, a plurality of chutes are arranged in parallel on the inner wall of the machine barrel, and the depth of each chute is gradually reduced along the material conveying direction. Along with the reduction of the chute depth, the section area during material conveying is gradually reduced along with the increase of the moving path, and the pressure building effect on the materials is achieved. In addition, as the pressure of the material is increased, the molten pool in the material extrudes the solid to the inner wall of the machine barrel, so that the heat transfer effect from the hot machine barrel to the solid is accelerated, and the melting of the solid is facilitated.
The device comprises a machine barrel, wherein a plurality of groups of detection units are arranged on the machine barrel along the material conveying direction and used for detecting materials in the machine barrel, and each group of detection units comprises a temperature sensor and a pressure sensor. The setting of multiunit detecting element can effectively realize detecting the pressure of the inside different regional materials of barrel and the material temperature of different groove depths of extrusion process, and control shaping quality parameter does benefit to the staff and in time masters material processing production situation.
Because the melting section and the homogenizing section of the machine barrel are the key parts, in order to enable the materials in the two sections to be monitored, the melting section of the machine barrel is at least provided with one group of detection units, and the homogenizing section of the machine barrel is at least provided with one group of detection units.
The screw rod is fluting equidistance deepening screw rod, it has the notch of stepping down that is used for assembling temperature sensor and pressure sensor to open on the screw rod. The setting of the notch of stepping down can cooperate with the installation of individual sensor, has avoided sensor and screw rod to produce the interference.
Compared with the prior art, the invention has the beneficial effects that:
the invention is scientific and reasonable. Compared with the prior art, the residue-preventing extruder provided by the invention comprises the head module which can effectively reduce material residue and improve the quality effect of material extrusion molding. The machine head module is formed by assembling a plurality of sub-modules, and in a material conveying channel, the assembly surface of each module does not have any material residual section capable of generating dead materials; the side wall of the inner cavity of the residue-preventing cavity die is a continuous and smooth curved surface, and the diffusion machine head and the sprue spreader are matched, so that materials can be smoothly and continuously guided to the extrusion molding module, the efficiency of extrusion molding operation is improved, the generation of dead materials is reduced, and the service life and the reliability of a machine are also improved. The machine barrel of the extruder is provided with a plurality of detection units, so that the state of materials in the machine barrel can be monitored in real time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is an assembled schematic view of a head module of the present invention;
FIG. 2 is an assembled top view of the round hole die, the residual cavity prevention die and the extrusion molding module of the present invention;
FIG. 3 is an assembled A-A cross-sectional view of the round hole die, the residual cavity prevention die and the extrusion molding module of the present invention;
FIG. 4 is an assembled B-B cross-sectional view of the round hole die, the residual cavity prevention die and the extrusion molding module of the present invention;
FIG. 5 is an assembled three-dimensional view of the round hole die, the residual cavity prevention die and the extrusion molding module of the present invention;
FIG. 6 is a schematic view of the extruder assembly of the present invention;
FIG. 7 is a schematic view of the screw structure of the present invention;
FIG. 8 is a schematic view of the structure of the barrel of the present invention;
1. a barrel; 101. a chute; 102. a pressure detection hole; 103. a temperature detection hole; 2. a screw; 201. a abdication notch; 3. a pressure sensor; 4. a temperature sensor; 5. an adjusting base; 6. a head module; 601. a residue-proof cavity mold; 602. an extrusion molding die; 603. a spreader cone; 604. a round hole die; 605. a diffusion machine head; 606. a flow distribution plate; 607. an inner cavity of the cavity mould is prevented from remaining; 608. a first step surface; 609. a first mounting groove; 610. a shunting cone mounting seat;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1-5, an anti-residue extruder comprises a cylinder 1 and a screw 2 arranged inside the cylinder 1, and is characterized in that a head module 6 for extrusion molding is connected to the tail end of the cylinder 1, the head module 6 comprises a diffusion head 605, an anti-residue cavity die 601 and an extrusion molding die 602 which are connected in sequence, the diffusion head 605 is communicated with a discharge port of the cylinder 1, the diffusion head 605 and the anti-residue cavity die 601 are used for guiding a material from the discharge port to the extrusion molding die 602, and the extrusion molding die 602 is used for molding the material; the side wall of the cavity 607 of the cavity 601 is a continuous smooth curved surface, the caliber of the cavity 607 is gradually reduced along the material conveying direction, and the caliber of the discharge hole of the cavity 607 is smaller than the inlet caliber of the extrusion molding mold 602.
As described above, the extruder head module 6 is arranged in the residue-preventing extruder provided by the invention to improve the extrusion molding step in the extrusion process, so as to achieve the technical effects of avoiding the residue of the dead materials and improving the molding quality of the product. The head module 6 includes a diffusion head 605, a residue-preventing cavity die 601 and an extrusion molding die 602 which are sequentially communicated. The function of the head module 6 is to convert the plastic melt in rotation from the outlet of the machine barrel 1 into parallel linear motion, further plasticize the plastic uniformly, and guide the melt into the extrusion molding grinding tool uniformly and smoothly. The cavity grinding apparatus of preventing remaining in this scheme is as the main bearing structure of material guide, and its inside cavity mould cavity 607 lateral wall of preventing remaining that sets up is continuous smooth curved surface, and the bore dwindles along material direction of delivery gradually, and the lateral wall of preventing remaining cavity mould cavity 607 is smooth, full, has fully filled dead angle position in the aircraft nose, can reduce the material effectively and remain. The caliber of the discharge hole of the inner cavity 607 of the residue-preventing cavity die is smaller than the caliber of the inlet of the extrusion molding die 602, so that the phenomenon that a step surface facing the material flow direction becomes a material residue section is avoided, and the technical effect of reducing the dead materials is also achieved.
Example 2:
this example is further defined on the basis of example 1:
as shown in fig. 6-8, the sidewall of the diffusion machine head inner cavity of the diffusion machine head 605 is a flared circular truncated cone curved surface with gradually increasing inner diameter, the inlet of the diffusion machine head inner cavity completely covers the discharge port of the machine barrel 1, and the inlet of the residual-preventing cavity mold inner cavity 607 completely covers the discharge port of the diffusion machine head inner cavity. In the technical characteristics, the inlet of the inner cavity of the diffusion machine head completely covers the discharge hole of the machine barrel 1, the feeding hole of the inner cavity 607 of the residual-preventing cavity die completely covers the discharge hole of the inner cavity of the diffusion machine head, and the phenomenon that the joint of different structures generates materials and the residual cross section generates dead materials is avoided.
The machine head module 6 further comprises a circular hole die 604 for mounting the residue-preventing cavity die 601 and the extrusion die 602, the circular hole die 604 is provided with a first step surface 608 for mounting the residue-preventing cavity die 601, the circular hole die 604 is provided with a first mounting groove 609 for mounting the extrusion die 602, the first mounting groove 609 extends from the first step surface 608 to the material conveying direction, the size of the first mounting groove 609 is such that the first mounting groove 609 can be used for embedding and mounting the extrusion die 602, and the inlet plane of the extrusion die 602 is flush with the first step surface 608 after the extrusion die 602 is assembled; the round hole die 604 is assembled and connected with the diffusion machine head 605 through thread matching; the anti-residue cavity die 601 is connected and assembled with the round hole die 604 through screw connection, the bottom surface of the anti-residue cavity die 601 is tightly attached to the first step surface 608, and a plurality of positioning pins are arranged between the anti-residue cavity die 601 and the round hole die 604 and used for positioning the outlet of the anti-residue cavity die 601 and the inlet of the extrusion molding die 602. In this technical feature, the assembly relationship between the residual-proof cavity die 601 and the extrusion die 602 is specifically defined, that is, the circular hole die 604 as the mounting frame body is connected and mounted, and the circular hole die 604 is simultaneously screwed with the diffusion head 605, so that the connection between the extrusion die 602 and the diffusion head 605 is realized. Install on first step face 608 and prevent remaining cavity mould 601 and closely laminate with first step face 608 through screwed connection, again because the top surface of the extrusion moulding mould 602 who installs in first mounting groove 609 flushes with first step face 608, consequently prevent remaining cavity mould 601 and also can closely compress tightly, spacing extrusion moulding mould 602, effectively solve forming die drunkenness fixed problem.
The number of the cavity cavities 607 of the cavity 601 is more than one, and the cavity cavities 607 of each cavity 601 are arranged in an array on the inner circumference of the plane perpendicular to the material conveying direction by taking the central line of the cavity 601 as the symmetry axis. In this technical characteristic, the setting of a plurality of cavity mould inner cavities 607 of preventing remaining makes and prevents that the extrusion moulding mould 602 that cavity mould inner cavities 607 matches also can a plurality of settings, has promoted the discharging efficiency of extruder. The arrangement form of the periphery of the center line of the anti-residue cavity die 601 is arrayed in an array, so that materials can fall into the inner cavity 607 of each anti-residue cavity die uniformly and at equal probability, and the efficiency and quality of product extrusion molding are improved.
Prevent being provided with spreader mount pad 610 in remaining cavity mould 601, spreader mount pad 610 extends towards the direction opposite with material direction of delivery from first step face 608, spreader mount pad 610 outside surface is the component part of preventing remaining cavity mould inner chamber 607 lateral wall, install spreader 603 on the spreader mount pad 610, spreader 603 is the cone, and its radius reduces gradually along the direction opposite with material direction of delivery, the central line of spreader 603 with prevent remaining cavity mould 601 central line coincidence. In the technical feature, the tap mounting seat 610 is used for mounting the tap 603, and the side surface of the tap mounting seat is used as a component of the sidewall of the cavity 607 of the residue-preventing cavity, so that one structure can perform two functions, and the nose module 6 is more compact. The tap 603 cooperates with the residual-preventing cavity die 601 and the diffusion machine head 605 to guide the material to the extrusion die 602 to realize the extrusion molding of the material.
A splitter plate 606 is provided between the diffuser head 605 and the barrel 1. The splitter plate 606 is used to separate the internal cavity of barrel 1 from the die block 6.
The machine barrel 1 is a chute machine barrel, a plurality of chutes 101 are arranged in parallel on the inner wall of the machine barrel 1, and the depth of the chutes 101 is gradually reduced along the material conveying direction. Along with the reduction of the groove depth of the chute 101, the section area during material conveying is gradually reduced along with the increase of the moving path, and the pressure building effect on the materials is achieved. In addition, as the pressure of the material is increased, the molten pool in the material extrudes the solid to the inner wall of the machine barrel 1, so that the heat transfer effect of the hot machine barrel 1 to the solid is accelerated, and the melting of the solid is facilitated.
A plurality of groups of detection units are arranged on the machine barrel 1 along the material conveying direction and used for detecting materials in the machine barrel 1, and each group of detection units comprises a temperature sensor 4 and a pressure sensor 3. The setting of multiunit detecting element can effectively realize detecting the pressure of the inside different regional materials of barrel 1 and the material temperature of different groove depths of extrusion process, and control shaping quality parameter does benefit to the staff and in time masters material processing production situation.
Since the melting section and the homogenizing section of the machine barrel 1 are the more critical parts, in order to enable the materials in the two sections to be monitored, the melting section of the machine barrel 1 is at least provided with one group of detection units, and the homogenizing section of the machine barrel 1 is at least provided with one group of detection units.
The screw rod 2 is a slotted equidistant deepening screw rod, the screw rod 2 is provided with a yielding notch 201 for assembling the temperature sensor 4 and the pressure sensor 3. The setting of the notch 201 of stepping down can cooperate with the installation of each sensor, has avoided sensor and screw rod 2 to produce the interference.
Example 3:
the invention provides a residual-preventing extruder working process which comprises the following steps:
during operation, materials in the machine barrel 1 pass through the flow distribution plate 606 under the extrusion, melting and conveying effects of the screw 2 and then enter the diffusion machine head 605; then, the material is extruded through the extrusion molding die 602 under the guiding action of the sprue spreader 603 and the residual-preventing cavity die 601.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The residue-preventing extruder comprises a machine barrel (1) provided with a screw (2) therein and a machine head module (6) connected to the machine barrel (1), and is characterized in that the machine head module (6) comprises a diffusion machine head (605), a residue-preventing cavity die (601) and an extrusion forming die (602) which are sequentially connected, the diffusion machine head (605) is communicated with a discharge hole of the machine barrel (1), and the diffusion machine head (605) and the residue-preventing cavity die (601) are used for guiding materials from the discharge hole of the machine barrel (1) to the extrusion forming die (602);
the side wall of the residual-preventing cavity die inner cavity (607) of the residual-preventing cavity die (601) is a continuous smooth curved surface, the caliber of the residual-preventing cavity die inner cavity (607) is gradually reduced along the material conveying direction, and the caliber of a discharge hole of the residual-preventing cavity die inner cavity (607) is smaller than the caliber of an inlet of an extrusion molding die (602).
2. The residue-preventing extruder as claimed in claim 1, wherein the side wall of the inner cavity of the diffusion machine head (605) is a flared circular truncated cone curved surface with gradually increasing inner diameter, the inlet of the inner cavity of the diffusion machine head completely covers the discharge hole of the machine barrel (1), and the inlet of the inner cavity (607) of the residue-preventing cavity die completely covers the discharge hole of the inner cavity of the diffusion machine head.
3. The residue-preventing extruder according to claim 2, wherein the head module (6) further comprises a circular hole die (604) for installing the residue-preventing cavity die (601) and the extrusion die (602), the circular hole die (604) is provided with a first step surface (608) for installing the residue-preventing cavity die (601), the circular hole die (604) is provided with a first installation groove (609) for installing the extrusion die (602), the first installation groove (609) extends from the first step surface (608) to the material conveying direction, the size of the first installation groove (609) is such that the first installation groove can be used for embedding and installing the extrusion die (602), and the inlet plane of the extrusion die (602) is flush with the first step surface (608) after the extrusion die (602) is assembled;
the round hole die (604) is in threaded fit assembly connection with the diffusion machine head (605);
prevent remaining cavity mould (601) and be connected the assembly through screwed connection and round hole mould (604), prevent remaining cavity mould (601) bottom surface and closely laminate with first step face (608), prevent being provided with a plurality of locating pins between remaining cavity mould (601) and round hole mould (604) for accomplish and prevent remaining cavity mould (601) export and extrusion moulding mould (602) entry location.
4. The machine of claim 3, wherein the cavity die (601) comprises more than one cavity die cavity (607) and each cavity die cavity (607) is arranged in an array on the inner circumference of the plane perpendicular to the material conveying direction with the centerline of the cavity die (601) as the axis of symmetry.
5. The residue-preventing extruder according to claim 4, wherein a splitter cone mounting seat (610) is arranged in the residue-preventing cavity die (601), the splitter cone mounting seat (610) extends from the first step surface (608) to the direction opposite to the material conveying direction, the outer side surface of the splitter cone mounting seat (610) is a component of the side wall of the residue-preventing cavity die inner cavity (607), the splitter cone mounting seat (610) is provided with a splitter cone (603), the splitter cone (603) is a cone, the radius of the splitter cone is gradually reduced along the direction opposite to the material conveying direction, and the center line of the splitter cone (603) coincides with the center line of the residue-preventing cavity die (601).
6. The extruder of claim 2, wherein a splitter plate (606) is provided between the diffuser head (605) and the barrel (1).
7. The extruder of claim 1, wherein the barrel (1) is a chute barrel, a plurality of chutes (101) are arranged in parallel on the inner wall of the barrel (1), and the depth of the chutes (101) is gradually reduced along the material conveying direction.
8. The residue-preventing extruder according to claim 1, wherein a plurality of groups of detecting units are arranged on the machine barrel (1) along the material conveying direction and used for detecting the material in the machine barrel (1), and each group of detecting units comprises a temperature sensor (4) and a pressure sensor (3).
9. The extruder according to claim 8, wherein the melting section of the barrel (1) is provided with at least one set of detection units, and the homogenizing section of the barrel (1) is provided with at least one set of detection units.
10. The residue-resistant extruder according to claim 8, wherein the screw (2) is a slotted equidistant-deepened screw, and the screw (2) is provided with a relief notch (201) for assembling the temperature sensor (4) and the pressure sensor (3).
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| CN202011529475.1A CN112743795A (en) | 2020-12-22 | 2020-12-22 | Prevent remaining extruder |
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| CN202011529475.1A CN112743795A (en) | 2020-12-22 | 2020-12-22 | Prevent remaining extruder |
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