CN117799139B - Splitter plate for plastic extruder and plastic extruder - Google Patents
Splitter plate for plastic extruder and plastic extruder Download PDFInfo
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- CN117799139B CN117799139B CN202410217082.9A CN202410217082A CN117799139B CN 117799139 B CN117799139 B CN 117799139B CN 202410217082 A CN202410217082 A CN 202410217082A CN 117799139 B CN117799139 B CN 117799139B
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- splitter
- plate body
- grooves
- plastic extruder
- feeding
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- 239000004033 plastic Substances 0.000 title claims abstract description 44
- 229920003023 plastic Polymers 0.000 title claims abstract description 44
- 238000009826 distribution Methods 0.000 claims description 66
- 238000007599 discharging Methods 0.000 claims description 38
- 230000003746 surface roughness Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 80
- 238000004140 cleaning Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002985 plastic film Substances 0.000 abstract 1
- 229920006255 plastic film Polymers 0.000 abstract 1
- 238000003763 carbonization Methods 0.000 description 16
- 230000009286 beneficial effect Effects 0.000 description 12
- 238000001125 extrusion Methods 0.000 description 7
- 238000010079 rubber tapping Methods 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000005121 nitriding Methods 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 238000009991 scouring Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/695—Flow dividers, e.g. breaker plates
- B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a splitter plate for a plastic extruder and the plastic extruder, which belong to the technical field of extruders and comprise a splitter plate body, a first splitter hole, a plurality of feeding grooves and a plurality of second splitter holes, wherein the first splitter hole is arranged in the center of the splitter plate body, the feeding grooves are positioned on the end face of the feeding end of the splitter plate body, the feeding grooves are all annular and uniformly distributed along the radial direction by taking the first splitter hole as the center, the plurality of second splitter holes are divided into multicomponent splitter hole groups, the multicomponent splitter hole groups are uniformly distributed along the circumferential direction of the corresponding feeding grooves, and the aim is to solve the problems that the original splitter plate works such as flow dead angle, unsmooth flow channel, carbonized layer adhesion on the surface and difficult cleaning of splitter plate plastic film formation after shutdown, ensure the stability of material outflow pressure and the smoothness of material flow, improve the product quality, save energy consumption and improve the production efficiency, and effectively reduce the operating cost of equipment.
Description
Technical Field
The invention relates to the technical field of extruders, in particular to a splitter plate for a plastic extruder and the plastic extruder.
Background
When the extruder works, the materials are firstly heated to a semi-molten state, then the materials are filtered out of impurities such as scrap iron in the materials through the filter screen under the action of the rotary pushing force and the extrusion force of the screw rod, then the materials are split through the splitter plate, and finally the materials enter the material die to realize extrusion.
At present, the conventional splitter plate is made of S136 stainless steel or 38CrMoAI material to form a circular part, a series of small holes are machined on a circular plane, the diameter d=2-7 mm of the small holes is distributed as 1 hole at the center of a circle, then the small holes are concentric circles with the center of a circle as round points, 6 holes, 12 holes, 18 holes and 24 holes are sequentially and uniformly distributed on the circumference of the concentric circles (generally according to the regular distribution of 1+6+12+18+24+30+), therefore, the small hole area is on the circular end face of the splitter plate, the other areas are all the platform areas for blocking the advance of materials, the platform areas account for about 50% -60% of the total area of the splitter plate, when the molten materials are pushed to the platform part of the splitter plate under a certain pressure, the materials are strongly blocked, and then the movement of the materials is changed from the previous forward rotary movement to the rotary movement along the circular plane of the splitter plate and the rebound reflux movement perpendicular to the circular plane, because the movement direction of the materials brought by the platform structure changes, and the defects are brought about as follows:
1. Part of materials are overheated and continuously bonded and carbonized on a plane, so that the insulation performance of wires and cables is negatively influenced, and the difficulty in cleaning plastic residues of the split plates after shutdown is greatly increased;
2. the pressurizing effect on the flow dividing plate, the pressure stability and the material flow rate are greatly influenced, so that the compactness of an insulating layer of a product is reduced and the production efficiency is reduced;
3. the smoothness of the effective flow of materials is seriously hindered, the reactive power loss caused by internal resistance directly causes the waste of energy consumption, and the production efficiency is correspondingly reduced.
There is thus provided a flow dividing plate for a plastic extruder and a plastic extruder to solve the problems set forth in the background art described above.
Disclosure of Invention
The invention provides a flow dividing plate for a plastic extruder and the plastic extruder, and aims to effectively solve the problems that the original flow dividing plate works in a dead angle, a flow passage is not smooth, a carbonized layer is adhered to the surface, and the film forming of the plastic of the flow dividing plate is difficult to clean after the machine is stopped, ensure the stability of the outflow pressure of materials and the smoothness of the flow of the materials, improve the quality of products, save energy consumption and improve the production efficiency, and effectively reduce the operation cost of equipment.
The technical scheme for solving the technical problems is as follows: the utility model provides a flow distribution plate for plastics extruder, includes flow distribution plate body, first flow distribution hole, a plurality of feed slot and a plurality of second flow distribution hole, flow distribution plate body center is provided with first flow distribution hole, a plurality of the feed slot is located flow distribution plate body feed end terminal surface, a plurality of the feed slot is the annular, and just with first flow distribution hole is radial evenly distributed as the center, and a plurality of second flow distribution hole divide into the multicomponent flow hole group, and the multiunit flow distribution hole group with a plurality of feed slot one-to-one sets up, every group a plurality of second flow distribution holes of flow distribution hole group follow corresponding feed slot circumference evenly distributed.
The beneficial effects of the invention are as follows:
1. The end face of the feeding end of the flow distribution plate body is provided with a plurality of feeding grooves for conducting drainage and flow promotion on materials, so that the materials rotating at the feeding end are smoothly led to enter the plurality of feeding grooves, the power consumption of material backflow is greatly reduced, meanwhile, the situation that the materials stay on the end face of the feeding end of the flow distribution plate body for a long time and are bonded and carbonized continuously due to overheating of the materials is effectively avoided, the process of carbonization layer aggregation-new material scouring-carbonization layer re-carbonization layer aggregation-new material re-scouring is repeated continuously, a layer of carbonization layer similar to a rice crust shape is bonded at the end face of the feeding end of the flow distribution plate body, and meanwhile, the situation that the carbonization layer falls off continuously under the new material scouring and flows to a die opening to be coated on an insulation layer of a wire and cable is avoided, and accordingly the insulation performance of the wire and cable is negatively influenced;
2. The plurality of feeding grooves are formed in the feeding end face of the flow distribution plate body, so that the cleaning difficulty of plastic residues on the feeding end face of the flow distribution plate body can be reduced, and the operating cost of equipment is effectively reduced.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the cross section of the feeding groove is semicircular, and the diameter of the feeding groove is the same as the diameter of the second diversion hole.
The beneficial effects of adopting the further scheme are as follows: the platform area of two adjacent second tapping holes in the circumferential direction of the feeding grooves is reduced as much as possible, the platform area of two adjacent feeding grooves in the radial direction of the splitter plate body is reduced as much as possible, the resistance of material circulation is reduced to the greatest extent, the speed of material circulation is increased, the energy consumption is saved, and the insulating compactness and the production efficiency of products are improved.
Further, the distributor plate further comprises a plurality of discharging grooves, the plurality of discharging grooves are located on the end face of the discharging end of the distributor plate body, the plurality of discharging grooves are annular and uniformly distributed along the radial direction by taking the first distributing holes as the center, the plurality of discharging grooves are in one-to-one correspondence with the plurality of distributing hole groups, and the plurality of second distributing holes of each distributing hole group are uniformly distributed along the circumferential direction of the corresponding discharging grooves.
The beneficial effects of adopting the further scheme are as follows: the material extrusion can be fully realized through the discharge grooves, the material is prevented from being accumulated on the end face of the discharge end of the flow distribution plate body and being burnt and carbonized, a carbonization layer similar to a rice crust is formed, the carbonization layer is also prevented from continuously flushing, falling off and flowing to the die opening and being coated on the insulating layer of the electric wire and the cable, so that the insulating performance of the electric wire and the cable is negatively influenced, meanwhile, the discharge grooves are beneficial to discharging air of the discharge end of the flow distribution plate body, air bubbles are prevented from entering the insulating layer of a product, the quality of the product is influenced, and particularly, the phenomenon that residual plastic forms a film on the end face of the discharge end of the flow distribution plate body and is adhered to the surface of the burnt carbide layer after the extruder stops working is avoided, so that the cleaning difficulty of plastic residues is increased.
Further, the cross section of the discharging groove is semicircular, and the diameter of the discharging groove is larger than that of the second flow diversion hole.
The beneficial effects of adopting the further scheme are as follows: the diameter of the discharging groove is larger than that of the feeding groove, the platform area of the discharging end face of the plate body of the flow distribution plate is reduced as much as possible, after the materials are fully extruded, the accumulation of the materials on the discharging end face of the plate body of the flow distribution plate is reduced as much as possible, the material performance is prevented from being damaged by overheating of the materials, and the product quality is reduced.
Further, the second flow diversion hole is provided with a first chamfer towards the feeding end of the flow diversion plate body, and the second flow diversion hole is provided with a second chamfer towards the discharging end of the flow diversion plate body.
The beneficial effects of adopting the further scheme are as follows: the first chamfer can eliminate long-time rotary motion and rebound backflow motion of materials along the end face of the feeding end of the flow distribution plate body, avoid the phenomena that part of materials stay on the end face of the feeding end for a long time and are repeatedly rebound backflow to generate overheat scorching carbonization, directly influence the insulating property of an insulating layer, simultaneously eliminate the resistance of pressure and speed which interfere with the advance of the materials, enhance the back pressure effect and increase the logistics capacity of unit time; the second chamfer can reduce the resistance of the extruded material and promote the extrusion of the material.
Further, the first chamfer and the second chamfer are both outer arc chamfers.
The beneficial effects of adopting the further scheme are as follows: the platform area of the two adjacent second diversion holes in the circumferential direction of the feeding groove is further eliminated or reduced, so that materials can enter the second diversion holes in an unobstructed manner, and the platform area of the two adjacent second diversion holes in the circumferential direction of the discharging groove is further reduced, the resistance of material circulation is further reduced, and the materials can flow in and flow out of the second diversion holes in an unobstructed manner.
Further, the chamfer of the first chamfer extends to 1mm-2mm below the bottom of the feed channel.
The beneficial effects of adopting the further scheme are as follows: the length that first chamfer extends for two adjacent first chamfers all form the toper passageway with the second tie-down hole, further reduce two adjacent second tie-down holes in the clearance of flow distribution plate body feed end terminal surface, promote the material circulation.
Further, the chamfer of the second chamfer extends to 1mm-2mm below the bottom of the discharging groove.
The beneficial effects of adopting the further scheme are as follows: the length that the second chamfer extends for two adjacent second chamfers all form the toper passageway with second tie-down hole, further reduce two adjacent second tie-down holes in the clearance of flow distribution plate body discharge end terminal surface, promote the material extrusion.
Further, the surface roughness of the feeding grooves, the discharging grooves, the first diversion holes, the second diversion holes, the first chamfers, the second chamfers and the feeding end face and the discharging end face of the diversion plate body is Ra0.01-0.04.
The beneficial effects of adopting the further scheme are as follows: the improvement of the surface roughness can reduce the generation of uneven micro grooves on the surface of the runner, avoid the accumulation of materials in the uneven micro grooves, lead to overheated burnt materials, negatively affect the insulating performance of products and increase the difficulty in cleaning the surface plastic residues.
The invention also provides a plastic extruder, which comprises a plastic extruder body and the splitter plate for the plastic extruder, wherein the splitter plate body is arranged in the plastic extruder body.
The beneficial effects are that: the production efficiency of the extruder is improved, and the product quality is improved.
Drawings
FIG. 1 is a cross-sectional view of a diverter plate for a plastic extruder in accordance with the present invention;
FIG. 2 is an enlarged view of a portion of the invention at C in FIG. 1;
FIG. 3 is an enlarged view of a portion of the invention at D in FIG. 1;
FIG. 4 is a left side view of a diverter plate for a plastic extruder in accordance with the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4A in accordance with the present invention;
FIG. 6 is a right side view of a diverter plate for a plastic extruder in accordance with the present invention;
fig. 7 is an enlarged view of a portion of fig. 6B in accordance with the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. A splitter plate body; 2. a feed channel; 3. a discharge groove; 4. a first tap hole; 5. a second diversion aperture; 6. a first chamfer; 7. and (5) a second chamfer.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1-7, this embodiment provides a flow distribution plate for a plastic extruder, including a flow distribution plate body 1, a first flow distribution hole 4, a plurality of feeding grooves 2 and a plurality of second flow distribution holes 5, wherein the center of the flow distribution plate body 1 is provided with the first flow distribution hole 4, a plurality of the feeding grooves 2 are located at the end face of the feeding end of the flow distribution plate body 1, a plurality of the feeding grooves 2 are all annular, and the first flow distribution holes 4 are used as the center and are uniformly distributed along the radial direction, the plurality of the second flow distribution holes 5 are divided into a plurality of multi-component flow distribution hole groups, a plurality of the flow distribution hole groups and a plurality of the feeding grooves 2 are arranged in a one-to-one correspondence, and a plurality of the second flow distribution holes 5 of each flow distribution hole group are uniformly distributed along the circumferential direction of the corresponding feeding groove 2.
The material is guided and promoted by the plurality of feeding grooves 2 arranged on the end face of the feeding end of the flow distribution plate body 1, the material rotating at the feeding end is promoted to smoothly enter the plurality of feeding grooves, the power consumption of material backflow is greatly reduced, meanwhile, the long-time stay of the material on the end face of the feeding end of the flow distribution plate body 1 is effectively avoided, the carbonization is continuously bonded due to overheating of the material, the process of carbonization layer aggregation-new material scouring-carbonization layer re-aggregation-new material re-scouring is continuously repeated, and finally, a layer of carbonization layer similar to a rice crust is bonded on the end face of the feeding end of the flow distribution plate body 1, and meanwhile, the carbonization layer is prevented from continuously falling down at the new material and flows to the insulating layer of the wire and the cable and is coated on the die opening, so that the insulation performance of the wire and the cable is negatively influenced.
The plurality of feeding grooves 2 are formed in the end face of the feeding end of the flow distribution plate body 1, so that the difficulty in cleaning the end face of the feeding end of the flow distribution plate body 1 by plastic residues can be reduced, and the operating cost of equipment is effectively reduced.
Specifically, the first tap hole 4 is a central hole of the tap plate body 1, and corresponds to the position of the extruder barrel, and in this embodiment, the diameter of the second tap hole 5 is 4.5mm.
Wherein each of the sets of component flow holes is sequentially distributed with 6 holes, 12 holes, 18 holes, 24 holes (generally distributed according to a 1+6+12+18+24+30.+ -. Law) on a concentric circle of the first component flow hole 4.
In addition, the clearance between two adjacent feeding grooves 2 in the radial direction of the flow dividing plate body 1 is 1.6mm.
On the basis of the scheme, the section of the feeding groove 2 is semicircular, and the diameter of the feeding groove 2 is the same as that of the second diversion hole 5.
The diameter of the feeding groove 2 is the same as that of the second diversion holes 5, so that the platform area of two adjacent second diversion holes 5 in the circumferential direction of the feeding groove 2 can be reduced, the platform area of two adjacent feeding grooves 2 in the radial direction of the diversion plate body 1 can be reduced as much as possible, the resistance of material circulation can be reduced to the greatest extent, the speed of material circulation can be increased, the stable pressure of material outflow can be ensured, the energy consumption can be saved, and the insulating compactness and the production efficiency of the product can be improved.
In this embodiment, as shown in fig. 5, the diameter of the feed channel 2 is the same as the diameter of the second tap hole 5, also 4.5mm.
On the basis of the scheme, the flow distribution plate further comprises a plurality of discharge grooves 3, wherein the plurality of discharge grooves 3 are positioned on the end face of the discharge end of the flow distribution plate body 1, the plurality of discharge grooves 3 are annular, the discharge grooves are uniformly distributed along the radial direction by taking the first flow distribution holes 4 as the center, the plurality of discharge grooves 3 are in one-to-one correspondence with the plurality of flow distribution hole groups, and the plurality of second flow distribution holes 5 of each flow distribution hole group are uniformly distributed along the circumferential direction of the corresponding discharge groove 3.
The material can be fully extruded by the discharge grooves 3, the material is prevented from being accumulated on the end face of the discharge end of the flow distribution plate body 1 and burnt and carbonized to form a carbonization layer similar to a rice crust, the carbonization layer is also prevented from continuously scouring and falling down and flowing to the die opening to be coated on the insulating layer of the electric wire and the cable, so that the insulating performance of the electric wire and the cable is negatively influenced, meanwhile, the discharge grooves 3 are beneficial to discharging air of the discharge end of the flow distribution plate body 1, air bubbles are prevented from entering the insulating layer of a product, the quality of the product is influenced, and particularly, the phenomenon that residual plastic forms a film on the end face of the discharge end of the flow distribution plate body 1 and is adhered to the surface of the burnt carbide layer after the extruder stops working is avoided, so that the cleaning difficulty of plastic residues is increased.
Specifically, the clearance between two adjacent discharging grooves 3 in the radial direction of the flow distribution plate body 1 is 0.5mm.
On the basis of the scheme, the section of the discharging groove 3 is semicircular, and the diameter of the discharging groove 3 is larger than that of the second flow diversion hole 5.
The diameter of the discharging groove 3 is larger than that of the feeding groove 2, so that the platform area of the end face of the discharging end of the flow distribution plate body 1 is reduced as much as possible, after the materials are fully extruded, the accumulation of the materials on the end face of the discharging end of the flow distribution plate body 1 is reduced as much as possible, the material performance is prevented from being damaged by overheating of the materials, and the product quality is reduced.
Specifically, as shown in fig. 7, in the present embodiment, the diameter of the discharge groove 3 is greater than 4.5mm.
On the basis of the scheme, the second flow diversion hole 5 is provided with a first chamfer 6 towards the feeding end of the flow diversion plate body 1, and the second flow diversion hole 5 is provided with a second chamfer 7 towards the discharging end of the flow diversion plate body 1.
The first chamfer 6 can eliminate long-time rotary motion and rebound backflow motion of materials along the end face of the feeding end of the flow distribution plate body 1, avoid the phenomena that part of materials stay on the end face of the feeding end for a long time and are repeatedly rebound backflow to generate overheat scorched carbonization, directly influence the insulating property of an insulating layer, simultaneously eliminate the resistance of pressure and speed which interfere with the advance of the materials, enhance the back pressure effect and increase the logistics capacity of unit time; the second chamfer 7 reduces the resistance of the extruded material and promotes the extrusion of the material.
Specifically, the second diversion holes 5 are symmetrically provided with first chamfers 6 towards the outer side of the feeding end of the diversion plate body 1, and the second diversion holes 5 are provided with second chamfers 7 towards the periphery of the outer side of the discharging end of the diversion plate body 1.
In this embodiment, the radius of the first chamfer 6 is 2.25mm, and the radius of the second chamfer 7 is greater than 2.25mm.
On the basis of the scheme, the first chamfer 6 and the second chamfer 7 are both outer arc chamfers.
The platform area of the two adjacent second diversion holes 5 in the circumferential direction of the feeding groove 2 is further eliminated or reduced, so that materials enter the second diversion holes 5 in an unobstructed manner, and the platform area of the two adjacent second diversion holes 5 in the circumferential direction of the discharging groove 3 is further reduced, the resistance of material circulation is further reduced, and the materials flow in and out of the second diversion holes 5 in an unobstructed manner.
Specifically, a line formed by connecting the intersection point of two adjacent first chamfers 6 and the center of the flow distribution plate body 1 is tangent to the intersection point of two adjacent first chamfers 6, and four second chamfers 7 are tangent to the discharge groove 3 respectively.
On the basis of the scheme, the chamfer of the first chamfer 6 extends to 1mm-2mm below the bottom of the feeding groove 2.
The length that first chamfer 6 extends for two adjacent first chamfers 6 all form the toper passageway with second tapping hole 5, further reduce two adjacent second tapping hole 5 at the clearance of flow distribution plate body 1 feed end terminal surface, promote the material circulation.
On the basis of the scheme, the chamfer angle of the second chamfer angle 7 extends to 1mm-2mm below the bottom of the discharging groove 3.
The length that second chamfer 7 extends for two adjacent second chamfers 7 all form the toper passageway with second tapping hole 5, further reduce two adjacent second tapping hole 5 at the clearance of flow distribution plate body 1 discharge end terminal surface, promote the material extrusion.
On the basis of the scheme, the surface roughness of the feeding grooves 2, the discharging grooves 3, the first diversion holes 4, the second diversion holes 5, the first chamfers 6, the second chamfers 7 and the feeding end face and the discharging end face of the diversion plate body 1 is Ra0.01-0.04.
The improvement of the surface roughness can reduce the generation of uneven micro grooves on the surface of the runner, avoid the accumulation of materials in the uneven micro grooves, lead to overheated burnt materials, negatively affect the insulating performance of products and increase the difficulty in cleaning the surface plastic residues.
Specifically, the splitter plate is made of 38CrMoAI high-grade nitriding steel, and has high wear resistance, high fatigue strength, excellent corrosion resistance and high strength after nitriding.
In addition, the feeding grooves 2, the discharging grooves 3, the first diversion holes 4, the second diversion holes 5, the first chamfers 6, the second chamfers 7 and the feeding end face and the discharging end face of the diversion plate body 1 are polished for the first time to enable the surface roughness to reach 0.05, then nitriding treatment is carried out, the depth of a nitriding layer is 0.2-0.3mm, the hardness HRC is 68-72, and finally the feeding grooves 2, the discharging grooves 3, the first diversion holes 4, the second diversion holes 5, the first chamfers 6, the second chamfers 7 and the feeding end face and the discharging end face of the diversion plate body 1 are polished for the second time to enable the surface roughness to reach 0.01-0.04, and the surface roughness is in a mirror surface level.
The embodiment also provides a plastic extruder, which comprises a plastic extruder body and the splitter plate for the plastic extruder, wherein the splitter plate body 1 is arranged in the plastic extruder body.
The production efficiency of the extruder is improved, and the product quality is improved.
In this embodiment, when the material is rotated forward by the barrel of the extruder and is abutted against the feeding end of the splitter plate body 1, the material will rotate briefly along the plurality of feeding grooves 2 on the feeding end face of the splitter plate body 1, then flow into the plurality of second diversion holes 5 through the plurality of first chamfers 6, and finally the material is extruded on the discharging end face of the splitter plate body 1 through the second diversion holes 5.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "inner," "outer," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (6)
1. The splitter plate for the plastic extruder is characterized by comprising a splitter plate body (1), a first splitter orifice (4), a plurality of feeding grooves (2) and a plurality of second splitter orifices (5), wherein the first splitter orifice (4) is arranged in the center of the splitter plate body (1), the plurality of feeding grooves (2) are positioned at the end face of the feeding end of the splitter plate body (1), the plurality of feeding grooves (2) are all annular, the first splitter orifices (4) are taken as the center and are uniformly distributed along the radial direction, the plurality of second splitter orifices (5) are divided into a plurality of multi-component orifice groups, a plurality of splitter orifice groups are arranged in one-to-one correspondence with the plurality of feeding grooves (2), and the plurality of second splitter orifices (5) of each splitter orifice group are uniformly distributed along the circumferential direction of the corresponding feeding grooves (2);
The flow distribution plate further comprises a plurality of discharge grooves (3), wherein the plurality of discharge grooves (3) are positioned on the end face of the discharge end of the flow distribution plate body (1), the plurality of discharge grooves (3) are annular, and are uniformly distributed along the radial direction by taking the first flow distribution holes (4) as the center, the plurality of discharge grooves (3) are arranged in one-to-one correspondence with the plurality of groups of flow distribution holes, and the plurality of second flow distribution holes (5) of each group of flow distribution holes are uniformly distributed along the circumferential direction of the corresponding discharge groove (3);
the section of the discharging groove (3) is semicircular, and the diameter of the discharging groove (3) is larger than that of the second diversion hole (5);
The second diversion hole (5) is provided with a first chamfer (6) towards the feeding end of the diversion plate body (1), and the second diversion hole (5) is provided with a second chamfer (7) towards the discharging end of the diversion plate body (1);
the first chamfer (6) and the second chamfer (7) are both outer arc chamfers.
2. A diverter plate for a plastic extruder according to claim 1, characterized in that the feed channel (2) is semicircular in cross section and the diameter of the feed channel (2) is the same as the diameter of the second diverter aperture (5).
3. A diverter plate for a plastic extruder according to claim 1, characterized in that the chamfer of the first chamfer (6) extends 1mm-2mm below the bottom of the feed channel (2).
4. A diverter plate for a plastic extruder according to claim 3, characterized in that the chamfer of the second chamfer (7) extends 1mm-2mm below the bottom of the discharge channel (3).
5. The flow dividing plate for a plastic extruder according to claim 4, wherein the surface roughness of the feed end face and the discharge end face of the flow dividing plate body (1) is ra0.01-0.04, the plurality of the feed grooves (2), the plurality of the discharge grooves (3), the first flow dividing holes (4), the plurality of the second flow dividing holes (5), the plurality of the first chamfers (6), the plurality of the second chamfers (7).
6. A plastic extruder, characterized by comprising a plastic extruder body and a diverter plate for a plastic extruder according to any one of claims 1 to 5, said diverter plate body (1) being mounted in said plastic extruder body.
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| CN117799139B true CN117799139B (en) | 2024-06-11 |
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