CN102642294A - Extrusion plasticized screw - Google Patents
Extrusion plasticized screw Download PDFInfo
- Publication number
- CN102642294A CN102642294A CN2012101271177A CN201210127117A CN102642294A CN 102642294 A CN102642294 A CN 102642294A CN 2012101271177 A CN2012101271177 A CN 2012101271177A CN 201210127117 A CN201210127117 A CN 201210127117A CN 102642294 A CN102642294 A CN 102642294A
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- CN
- China
- Prior art keywords
- screw rod
- barrel
- pulverizing
- screw
- plasticizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B29C48/505—Screws
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
Abstract
The invention relates to an extrusion plasticized screw for a pulverizing palsticator, wherein the screw is a pitch-varying screw arranged in a barrel of a melting device; and the pitch of the screw becomes smaller from the inlet of the barrel to the outlet thereof. According to the invention, the application of the pitch-varying screw solves the problems of the blanking difficulty, performance of manual cleaning only at downtime and the like in the prior art; the application of the screw whose inner diameter becomes large gradually solves the problems that the foamed plastics are molten slower or cannot be completely molten in the barrel and the like in the prior art; the application of the screw with a hollow part and/or a continuous heat pipe further solves the problems of incomplete melting and the like; and the application of non-linearly distributed rotating blades solves the problems of too large instantaneous load of the pulverizing motor, pulverizing difficulty thereof and the like when individual foamed plastics with larger thickness and volume are faced in the prior art.
Description
Technical field
The present invention relates to a kind of pulverizing plasticizing machine and use the extrusion plasticizing screw rod, pulverize the plasticizing machine and be used for the discarded foamed plastic of melt processed, significantly to dwindle its volume and convenient transportation, to recycle.
Background technology
Expandable polystyrene (EPS), expandable polypropylene (EPP), expandability polyethylene from high pressure process foamed plastics such as (EPE) have good heat insulation, sound insulation, performance such as shockproof, and its application is increasingly extensive.The recycling of discarded foamed plastic not only can be protected environment, energy savings, and have good economic benefits.One of discarded at present foamed plastic processing method is through broken, hot melt regeneration and granulation, becomes another kind of material particle, adds different auxiliary agents again, makes another kind of material through processed.Because foamed plastic bulky, it is higher in the recycling process waste foamed plastics to be transported to the cost of transportation of processing stand.Though can waste foamed plastics be transported after crushed, because be the foaming thing, so volume is bigger.
Existing fusing machine comprises frame, engine housing and motor, and the top of engine housing is provided with charging aperture, is provided with reducing mechanism, reducing mechanism below in the engine housing and is provided with aggregate bin, and the aggregate bin below is provided with melting appartus; Said melting appartus comprises barrel; The import of barrel is arranged on the end face rear portion of barrel, the import of the relative barrel of outlet of aggregate bin, and hoop is provided with heating collar on the extension outer wall of barrel; The extension end face of barrel is provided with the discharging mouth, is provided with screw rod (being the extrusion plasticizing screw rod) in the barrel.
The weak point of above-mentioned existing fusing machine is: when foamed plastic length in being sent to the barrel import or volume are big, often can not get into screw rod, cause the blanking difficulty, and then can only shut down the pedestrian worker's cleaning of going forward side by side.Secondly, foamed plastic often melts slow in barrel or can not thoroughly melt, and has the solid particle of foamed plastic in the liquation that causes the discharging mouth to be extruded.
How to address the above problem, be the technical barrier of this area.
Summary of the invention
The technical problem that the present invention at first will solve provide a kind of simple in structure, be suitable for quick blanking and the higher pulverizing plasticizing machine of reliability is used the extrusion plasticizing screw rod.
The technical problem of its less important solution of the present invention provides and a kind ofly is suitable for making the very fast and fusing of foamed plastic burn-off rate in barrel to pulverize the plasticizing machine more completely using the extrusion plasticizing screw rod.
The technical problem that the present invention will solve once more is suitable for making the load of motor to keep the pulverizing plasticizing machine of the above-mentioned extrusion plasticizing screw rod of smaller applications when providing a kind of particle.
For solving above-mentioned primary technical problem; Pulverizing plasticizing machine provided by the invention comprises: the interior screw rod of barrel of being located at melting appartus; Be characterized in: screw rod is a varying pitch screw, and the pitch of screw rod is little by reaching greatly on contiguous barrel charging aperture to the direction of barrel discharging opening.
As solving above-mentioned second technical problem, in the pulverizing plasticizing machine provided by the invention, on the direction of barrel charging aperture to barrel discharging opening, it is big that the internal diameter of said screw rod becomes gradually.During use; Because the internal diameter of barrel is constant; And the internal diameter of screw rod becomes greatly gradually, makes that the material on the screw rod at the contiguous barrel charging aperture place in the barrel is less, and the heater that is wrapped in the barrel outer wall at this moment melts foamed plastic easily fast; And melt more thorough, thereby further dwindle the volume of foamed plastic.
As preferred scheme, the contiguous barrel discharging opening place of said screw rod is hollow, alleviating the weight of screw rod, and then alleviates motor load; On the other hand, can when bringing into use, the temperature of screw rod hollow part be raise fast.
As further preferred scheme, be provided with heater in the hollow part of said screw rod, be used for further heating, make further quick, the thoroughly fusing of foamed plastic, thereby further dwindle the volume of foamed plastic.
As the preferred scheme of another kind, the outboard end of said barrel discharging opening is connected with continuous heat pipe, and this continuous heat pipe is that outer wall is wrapped up in the hollow pipe that is provided with heater, is fixed with tube core on the axis in this continuous heat pipe, and the external diameter of this tube core is less than the internal diameter of continuous heat pipe.During discharging, the outer wall from the liquation of barrel discharging opening output along tube core flows and accepts the heater Fast Heating, finally sees off; The liquation that continuous heat pipe is used for further the discharging opening of barrel being extruded heats; With respect to pure hollow pipe; The central part deficiency of being heated in continuous heat pipe of the present invention is suitable for avoiding managing, thus the solid particle of the foamed plastic that wherein exists further eliminated, and further dwindle the volume of foamed plastic.
As solving above-mentioned the 3rd technical problem, the reducing mechanism in the pulverizing plasticizing machine of the above-mentioned extrusion plasticizing screw rod of application of the present invention's design comprises: the multi-disc moving knife of stationary distribution on main shaft; Each moving knife 1-10 ° of distribution of staggering successively on same direction, thus make a blade not on same straight line, the situation of having avoided each blade to cut foamed plastic simultaneously; Promptly when work; Only some blade drives the load of the pulverizing motor of main shaft at the cutting foamed plastic thereby alleviated, and makes the load homogenising of pulverizing motor; Avoided pulverizing the excessive situation of moment load of motor, ensured and pulverized the safe in utilization of motor.
As further preferred scheme, be convenient production, installation and removal, the multi-disc moving knife is fixed on the sleeve, and this sleeve key is engaged on the said main shaft, and the two ends of this sleeve are provided with key and are engaged in the fixed cover on the said main shaft.
The technique effect that the present invention has: (1) the present invention has solved the blanking difficulty that prior art exists through the screw rod that adopts varying pitch, and then can only shut down problem such as the pedestrian worker's cleaning of going forward side by side.(2) the present invention becomes big screw rod gradually through adopting internal diameter, has solved problems such as foamed plastic that prior art exists melt in barrel slowly or can not thoroughly melt.(3) the present invention has the screw rod and/or the continuous heat pipe of hollow part through employing, has further solved problem such as can not thoroughly melt.(4) moving knife of the present invention through adopting non-rectilinear to distribute, solved that prior art exists when running into the bigger foamed plastic of indivedual thickness and volume, the moment of pulverizing motor the problems such as excessive, particle difficulty of loading.
Description of drawings
For content of the present invention is more clearly understood, below basis specific embodiment and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 is the structural representation of pulverizing plasticizing machine of the present invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the left view of Fig. 1;
Fig. 4 is the structural representation of the reducing mechanism in the pulverizing plasticizing machine of the present invention;
Fig. 5 is the right view of Fig. 4;
Fig. 6 is the structural representation that the internal diameter in the pulverizing plasticizing machine of the present invention becomes greatly and have the varying pitch screw of hollow part gradually;
Fig. 7 is the structural representation of the constant varying pitch screw of the internal diameter in the pulverizing plasticizing machine of the present invention;
Fig. 8 is the structural representation of continuous heat pipe of the present invention;
Fig. 9 is the end face structure sketch map of said continuous heat pipe;
Figure 10 is the structural representation that the internal diameter in the pulverizing plasticizing machine of the present invention becomes big constant lead screw gradually.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated:
Like Fig. 1 to 3; The pulverizing plasticizing machine of present embodiment comprises: frame 10, engine housing 7, be located at the reducing mechanism in the engine housing 7, the melting appartus of being located at the reducing mechanism below, the top of engine housing 7 and be provided with charging aperture; Melting appartus comprises barrel; Barrel charging aperture 11 be located at reducing mechanism under, on the extension outer wall of barrel discharging opening 12 hoop be provided with heating collar, be provided with screw rod 2 in the barrel 1; The screw drive motor is in transmission connection with screw rod 2 through a gearbox 9, pulverizes motor 6 and is in transmission connection through the main shaft 4 in a belt pulley 8 and the said reducing mechanism.
Like Fig. 7, screw rod 2 is a varying pitch screw, and the pitch of screw rod 2 is little by reaching greatly on contiguous barrel charging aperture 11 to the direction of barrel discharging opening 12.As preferred scheme, the pitch of the contiguous barrel charging aperture 11 of screw rod 2 can be confirmed with reference to the maximum length value that is suitable for through the foaming plastic block of said reducing mechanism.
As further preferred scheme, like Fig. 6, on the direction of barrel charging aperture 11 to barrel discharging opening 12, the internal diameter of said screw rod 2 becomes greatly gradually, and external diameter is constant.During use; Because the internal diameter of barrel 1 is constant; And the internal diameter of screw rod 2 becomes greatly gradually, makes that the material on the screw rod 2 at contiguous barrel charging aperture 11 places in the barrel 1 is less, and the heater that is wrapped in barrel 1 outer wall at this moment melts foamed plastic easily fast; And melt more thorough, thereby further dwindle the volume of foamed plastic.
The contiguous barrel discharging opening place of said screw rod 2 is hollow, alleviating the weight of screw rod 2, and then alleviates the load of screw drive motor; On the other hand, can when bringing into use, the temperature of screw rod 2 hollow parts 21 be raise fast.
Be provided with heater in the hollow part 21 of said screw rod 2, be used for further heating, make further quick, the thoroughly fusing of foamed plastic, thereby further dwindle the volume of foamed plastic.The preferred electric heater unit of heater, during screw rod 2 rotations, this electric heater unit selects for use the brush mode to link to each other with power supply.Also can adopt the heated oils pipeline of active joint formula, carry out the spacer heating.
The outboard end of said barrel discharging opening is connected with continuous heat pipe 3; Like Fig. 8; Should wrap up in the hollow pipe that is provided with heater for outer wall by continuous heat pipe 3; Be somebody's turn to do on the axis in the continuous heat pipe 3 and be fixed with solid tube core 31, tube core 31 is fixed in the continuous heat pipe 3 through a plurality of contiguous blocks 32, and the external diameter of this tube core 31 is less than the internal diameter of continuous heat pipe 3.During discharging, the outer wall from the liquation of barrel discharging opening 12 output along tube core 31 flows and accepts the heater Fast Heating, finally sees off, thereby further eliminates the solid particle of the foamed plastic that wherein exists, and further dwindle the volume of foamed plastic.Employing has the continuous heat pipe 3 of tube core 31, with respect to pure hollow pipe, and the central part deficiency of being heated in continuous heat pipe 3 of the present invention is suitable for avoiding managing.
Reducing mechanism in this pulverizing plasticizing machine comprises: the multi-disc moving knife 5 of stationary distribution on main shaft 4, be located at the quiet cutter 13 that is interspersed one by one with each moving knife 5 in the engine housing 7; Like Fig. 5, each moving knife 5 1-10 ° of distribution of staggering successively on same direction, thus make a blade not on same straight line; The situation of having avoided each blade to cut foamed plastic simultaneously, promptly when work, only some blade is at the cutting foamed plastic; Thereby alleviated the load that drives the pulverizing motor 6 of main shaft 4; And make the load homogenising of pulverizing motor 6, and avoided pulverizing the excessive situation of moment load of motor 6, ensured the safe in utilization and service life of pulverizing motor 6.
Be convenient production, installation and removal, multi-disc moving knife 5 is fixed on the sleeve, and this sleeve key is engaged on the said main shaft 4, and the two ends of this sleeve are provided with key and are engaged in the fixed cover 41 on the said main shaft 4.
As the embodiment of optimizing,, an axis of centres bearing can be set in the central authorities of main shaft 4 if said main shaft 4 length are longer.
As the embodiment of optimizing, the pulverizing plasticizing machine of present embodiment has been cancelled aggregate bin of the prior art, that is: with barrel charging aperture 11 directly be located at reducing mechanism under adjacent, and the little matched in clearance of external diameter of the outer end of each moving knife 5 and screw rod 2.This is not only less machine volume has been avoided the buildup that aggregate bin possibly bring, the defective of putty simultaneously, has improved operating efficiency.
As another kind of scheme, as the modification of the said screw rod 2 among Fig. 6, screw rod 2 can adopt uniform pitch.
Obviously, the foregoing description only be for clearly the present invention is described and is done for example, and be not to be qualification to embodiment of the present invention.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (6)
1. extrusion plasticizing screw rod; This screw rod (2) is located in the barrel (1) of pulverizing the plasticizing machine; It is characterized in that: screw rod (2) is a varying pitch screw, and the pitch of screw rod (2) is little by reaching greatly on contiguous barrel charging aperture (11) to the direction of barrel discharging opening (12).
2. extrusion plasticizing screw rod according to claim 1 is characterized in that: to the direction of barrel discharging opening (12), the internal diameter of said screw rod (2) becomes big gradually at barrel charging aperture (11).
3. extrusion plasticizing screw rod according to claim 2 is characterized in that: the contiguous barrel discharging opening place of said screw rod (2) is hollow.
4. extrusion plasticizing screw rod according to claim 3 is characterized in that: be provided with heater in the hollow part (21) of said screw rod (2).
5. an application rights requires the pulverizing of one of 1-4 described extrusion plasticizing screw rod to plastify machine; It is characterized in that: the outboard end of the barrel discharging opening (12) of said barrel (1) is connected with continuous heat pipe (3); Should wrap up in the hollow pipe that is provided with heater for outer wall by continuous heat pipe (3); Be somebody's turn to do on the axis in the continuous heat pipe (3) and be fixed with tube core (31), the external diameter of this tube core (31) is less than the internal diameter of continuous heat pipe (3);
Reducing mechanism in this pulverizing plasticizing machine comprises: the multi-disc moving knife (5) of stationary distribution on the main shaft (4) of pulverizing the plasticizing machine; Each moving knife (5) 1-10 ° of distribution of staggering successively on same direction.
6. pulverizing plasticizing machine according to claim 5; It is characterized in that: multi-disc moving knife (5) is fixed on the sleeve; This sleeve key is engaged on the said main shaft (4), and the two ends of this sleeve are provided with key and are engaged in the fixed cover (41) on the said main shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127117.7A CN102642294B (en) | 2012-04-26 | 2012-04-26 | Extrusion plasticizing screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127117.7A CN102642294B (en) | 2012-04-26 | 2012-04-26 | Extrusion plasticizing screw rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102642294A true CN102642294A (en) | 2012-08-22 |
| CN102642294B CN102642294B (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210127117.7A Active CN102642294B (en) | 2012-04-26 | 2012-04-26 | Extrusion plasticizing screw rod |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6634781B2 (en) * | 2001-01-10 | 2003-10-21 | Saint Gobain Industrial Ceramics, Inc. | Wear resistant extruder screw |
| CN201172274Y (en) * | 2008-01-07 | 2008-12-31 | 上海英科实业有限公司 | Hot press for recovering waste plastic foam |
| CN201405501Y (en) * | 2008-12-12 | 2010-02-17 | 李新乐 | Novel screw |
| CN101898411A (en) * | 2010-04-27 | 2010-12-01 | 昆山科信橡塑机械有限公司 | Screw special for low-smoke halogen-free material |
| CN101985238A (en) * | 2010-07-15 | 2011-03-16 | 王维东 | Screw for injection machine |
| CN202144109U (en) * | 2011-06-20 | 2012-02-15 | 温州南一塑料机械有限公司 | Screw rod for extruding machine |
| CN202507512U (en) * | 2012-04-26 | 2012-10-31 | 常州诚力机电有限公司 | Extruding-plasticizing screw rod |
-
2012
- 2012-04-26 CN CN201210127117.7A patent/CN102642294B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6634781B2 (en) * | 2001-01-10 | 2003-10-21 | Saint Gobain Industrial Ceramics, Inc. | Wear resistant extruder screw |
| CN201172274Y (en) * | 2008-01-07 | 2008-12-31 | 上海英科实业有限公司 | Hot press for recovering waste plastic foam |
| CN201405501Y (en) * | 2008-12-12 | 2010-02-17 | 李新乐 | Novel screw |
| CN101898411A (en) * | 2010-04-27 | 2010-12-01 | 昆山科信橡塑机械有限公司 | Screw special for low-smoke halogen-free material |
| CN101985238A (en) * | 2010-07-15 | 2011-03-16 | 王维东 | Screw for injection machine |
| CN202144109U (en) * | 2011-06-20 | 2012-02-15 | 温州南一塑料机械有限公司 | Screw rod for extruding machine |
| CN202507512U (en) * | 2012-04-26 | 2012-10-31 | 常州诚力机电有限公司 | Extruding-plasticizing screw rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102642294B (en) | 2016-01-20 |
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