CN100560335C - A kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod - Google Patents
A kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod Download PDFInfo
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- CN100560335C CN100560335C CNB2008100643528A CN200810064352A CN100560335C CN 100560335 C CN100560335 C CN 100560335C CN B2008100643528 A CNB2008100643528 A CN B2008100643528A CN 200810064352 A CN200810064352 A CN 200810064352A CN 100560335 C CN100560335 C CN 100560335C
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/565—Screws having projections other than the thread, e.g. pins
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
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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
- B29C48/36—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
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- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod, it relates to a kind of Wood-plastic composite material extrusion moulding equipment.Fail the fine problem of utilizing at the effect of the two rank of one-step method parallel double-screw Wood-plastic composite material extrusion moulding device structure complexity, cost height, energy consumption height, especially parallel double-screw.First drive unit (2) is in transmission connection with quantitative feeding preheating device (4), quantitatively feeding preheating device (4) is connected with single screw rod extrusion device (8) by vacuum devolatilization device (5), second drive unit (3) is in transmission connection with single screw rod extrusion device (8), single screw rod extrusion device (8) is communicated with mould shape device (6), one side of the discharging opening of mould shape device (6) is provided with traction cutter sweep (7), and first, second drive unit and single screw rod extrusion device (8) all are packed on the frame (1).Overall structure of the present invention is simple, cost is low, energy consumption is low, it is strong to mix dispersion and extrude reduced pressure capabilities, can be used as the special equipment of one-step method wood-plastic composite material extrusion molding.
Description
Technical field
The present invention relates to a kind of Wood-plastic composite material extrusion moulding equipment, belong to material manufacturing technology field.
Background technology
In recent ten years, because the double dominant of wood plastic composite aspect comprehensive utilization of resources and environmental protection developed rapidly in many countries.The wood plastic composite technology is to grow up the wherein wood plastic composite product expressing technique moulding more than 80% on timber science and plastic processing technology cross the basis of merging.
The technical difficulty of Wood-plastic composite material extrusion moulding is: institute's material processed has thermal sensitivity, the screw rod design should be able to adapt to the wide range of work, wood-fibred is cut off few, wood-fibred is evenly disperseed and the complete fusion of material, reinforced stable, good exhaust effect can fully be got rid of the volatilizable composition in the wood powder, and forms the melt pressure of high stability.
At present, external wood is moulded extrusion equipment and is mainly adopted custom-designed tapered double screw extruder, the feeding section diameter of tapered screw rod is bigger, can compress continuously material, shorten the time of staying of material in machine barrel, the metering section diameter is little, and is little to the shearing of fused materials, this is a big advantage for processing thermal sensitivity wood plastic composite, but has complex structure, problem that the processing and manufacturing difficulty is big simultaneously.Wood is moulded in the extrusion equipment at home, the main one-step method wood-plastic composite material extrusion equipment that adopts, it mainly is that continuous fusion after wood-fibred and resin and the auxiliary agent mixing is disperseed to extrude, cooling and shaping, material only need heat once, and by dehydration, devolatilization device are set, the wood fibre filler of water content about 8% can directly use, and is the developing direction of wood plastic composite forming technique.Granted publication day is on March 8th, 2006, Granted publication number to disclose " the two rank of one-step method cocurrent and parallel twin-screw Wood plastic composite manufacturing equipment " for the utility model patent of CN 2763016Y; In addition, Granted publication day be on February 7th, 2007, Granted publication number for the utility model patent of CN2866107Y discloses " one-step method is produced the equipment of wood plastic composite ", and the one-step method extrusion way that specifically adopts parallel double-screw to connect with conical double-screw.More than these two kinds of extrusion equipments all exist the effect of complex structure, cost height, energy consumption height, especially parallel double-screw to fail the problem of fine utilization.And adopt common single screw extrusion machine, because the restriction of its feed way and mixing ability generally is used for multistep processes, by the extrusion molding of parallel double-screw extruder mixing granulator material in the wood plastic composite industry.
Summary of the invention
The purpose of this invention is to provide a kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod, it can solve the two rank of existing one-step method parallel double-screw Wood-plastic composite material extrusion moulding equipment and exist the effect of complex structure, cost height, energy consumption height, especially parallel double-screw to fail the problem of fine utilization.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be: extrusion equipment of the present invention is made up of frame, first drive unit, second drive unit, quantitative feeding preheating device, vacuum devolatilization device, extrusion device, mould shape device, traction cutter sweep; Described extrusion device is single screw rod extrusion device, the clutch end of described first drive unit is in transmission connection with quantitative feeding preheating device, the discharging opening of described quantitative feeding preheating device is connected with the feeding mouth of single screw rod extrusion device by vacuum devolatilization device, the clutch end of described second drive unit and single screw rod extrusion device are in transmission connection, the discharging opening of single screw rod extrusion device is communicated with the feeding mouth of mould shape device, one side of the discharging opening of described mould shape device is provided with the traction cutter sweep, first drive unit, second drive unit and single screw rod extrusion device all are packed on the frame;
Described vacuum devolatilization device is an airtight chamber, the sidewall of described airtight chamber is provided with observation window, the upper end of airtight chamber is provided with vacuum interface, and the discharging opening of described quantitative feeding preheating device is connected with the feeding mouth of single screw rod extrusion device by airtight chamber;
Described quantitative feeding preheating device is made up of hopper, feed screw, feeding machine barrel and heating jacket; Described hopper is packed on the frame, one end of described feed screw and the clutch end of first drive unit are in transmission connection, described feeding machine jacket casing is contained on the feed screw, the inner chamber of feeding machine barrel is communicated with the feeding mouth of airtight chamber and the discharging opening of hopper respectively, described heating jacket is sleeved on the feeding machine barrel, and the inwall of heating jacket contacts with the outer wall of feeding machine barrel;
Described first drive unit is made up of first motor, first decelerator; The clutch end of described first motor is in transmission connection by an end of first decelerator and feed screw;
Described single screw rod extrusion device is made up of the single screw rod of exhaust, devolatilizing barrel, five heating watt covers, heating collar, flange, melt pressure sensor and blast pipes; The single screw rod of described exhaust is arranged in the inner chamber of devolatilizing barrel, the single screw rod of exhaust constitutes by six sections, it is vented screw material feeding section, vented screw is the compression section just, the vented screw exhaust section, vented screw fusion compression section, vented screw metering section and vented screw pin disperse mixer, described vented screw material feeding section is corresponding with the discharging opening of airtight chamber, described vented screw pin disperses mixer near flange one side, vented screw material feeding section to vented screw pin disperses to be followed successively by between the mixer vented screw compression section just, the vented screw exhaust section, vented screw fusion compression section and vented screw metering section, the clutch end of the vented screw material feeding section and second drive unit is in transmission connection, the two ends of devolatilizing barrel are affixed with second drive unit and mould shape device respectively, the discharging opening of described airtight chamber is packed near on the devolatilizing barrel of vented screw material feeding section one side, airtight chamber communicates with the inner chamber of devolatilizing barrel, described flange is packed near on the devolatilizing barrel of mould shape device one side, be set with heating collar on the excircle end face of flange, the inwall of described heating collar contacts with the excircle end face of flange, one end of described melt pressure sensor passes heating collar, flange and devolatilizing barrel are contained in the inner chamber of devolatilizing barrel, five heating watt covers are housed on the devolatilizing barrel between flange and the airtight chamber, the direction of described five heating watt covers along airtight chamber to flange sets gradually and is respectively the first heating watt cover, the second heating watt cover, the 3rd heating watt cover, the 4th heating watt cover and slender acanthopanax heat watt cover, be provided with steam vent with the corresponding devolatilizing barrel of described vented screw exhaust section, described steam vent is arranged between second heating watt cover and the 3rd heating watt cover, and an end of described blast pipe is contained in the steam vent;
Described second drive unit is made up of second motor and second decelerator; The clutch end of described second motor is in transmission connection by second decelerator and vented screw material feeding section.
The invention has the beneficial effects as follows: the present invention separates mixing the extruding with feeding control of material, is convenient to carry out independent control at the wood plastic composite extrusion characteristics.In addition, the present invention has also that overall structure is simple, cost is low, energy consumption is low, mix and disperse and extrude the strong advantage of upbuild voltage capacity, can be used as the special equipment of one-step method wood-plastic composite material extrusion molding.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention, and Fig. 2 is the A portion enlarged drawing of Fig. 1, and Fig. 3 is the B portion enlarged drawing of Fig. 1, and Fig. 4 is the structural representation of the single screw rod 17 of exhaust.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1～Fig. 4 present embodiment is described, the extrusion equipment of present embodiment is made up of frame 1, first drive unit 2, second drive unit 3, quantitative feeding preheating device 4, vacuum devolatilization device 5, extrusion device, mould shape device 6 and traction cutter sweep 7; Described extrusion device is single screw rod extrusion device 8, the clutch end of described first drive unit 2 is in transmission connection with quantitative feeding preheating device 4, the discharging opening of described quantitative feeding preheating device 4 is connected with the feeding mouth of single screw rod extrusion device 8 by vacuum devolatilization device 5, the clutch end of described second drive unit 3 and single screw rod extrusion device 8 are in transmission connection, the discharging opening of single screw rod extrusion device 8 is communicated with the feeding mouth of mould shape device 6, one side of the discharging opening of described mould shape device 6 is provided with traction cutter sweep 7, the first drive units 2, second drive unit 3 and single screw rod extrusion device 8 all are packed on the frame 1.Mould shape device 6 in the present embodiment and traction cutter sweep 7 adopt the existing mature equipment in this area.
The specific embodiment two: present embodiment is described in conjunction with Fig. 1～Fig. 3, the vacuum devolatilization device 5 of present embodiment is an airtight chamber, the sidewall of described airtight chamber is provided with observation window 9, the upper end of airtight chamber is provided with vacuum interface 10, and the discharging opening of described quantitative feeding preheating device 4 is connected with the feeding mouth of single screw rod extrusion device 8 by airtight chamber.So be provided with, be beneficial to the material devolatilization.Other composition and annexation are identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 1～Fig. 3 present embodiment is described, the quantitative feeding preheating device 4 of present embodiment is made up of hopper 11, feed screw 12, feeding machine barrel 13 and heating jacket 14; Described hopper 11 is packed on the frame 1, one end of described feed screw 12 and the clutch end of first drive unit 2 are in transmission connection, described feeding machine barrel 13 is sleeved on the feed screw 12, the inner chamber of feeding machine barrel 13 is communicated with the feeding mouth of airtight chamber and the discharging opening of hopper 11 respectively, described heating jacket 14 is sleeved on the feeding machine barrel 13, and the inwall of heating jacket 14 contacts with the outer wall of feeding machine barrel 13.So be provided with, the preheating of material can guarantee the devolatilization effect that reaches good.Other composition and annexation are identical with the specific embodiment two.
The specific embodiment four: in conjunction with Fig. 1 present embodiment is described, first drive unit 2 of present embodiment is made up of first motor 15 and first decelerator 16; The clutch end of described first motor 15 is in transmission connection by the end of first decelerator 16 with feed screw 12.So be provided with, simple in structure, be beneficial to assembling.First motor 15 and the 16 equal outsourcings of first decelerator.Other composition and annexation are identical with the specific embodiment three.
The specific embodiment five: in conjunction with Fig. 1～Fig. 3 present embodiment is described, single screw rod extrusion device 8 of present embodiment is made up of the single screw rod 17 of exhaust, devolatilizing barrel 18, five heating watt covers, heating collar 19, flange 20, melt pressure sensor 21 and blast pipes 34; The single screw rod 17 of described exhaust is arranged in the inner chamber of devolatilizing barrel 18, the single screw rod 17 of exhaust constitutes by six sections, it is vented screw material feeding section 22, vented screw is compression section 23 just, vented screw exhaust section 24, vented screw fusion compression section 25, vented screw metering section 26 and vented screw pin disperse mixer 27, described vented screw material feeding section 22 is corresponding with the discharging opening of airtight chamber, described vented screw pin disperses mixer 27 near flange 20 1 sides, vented screw material feeding section 22 to vented screw pin disperses to be followed successively by between the mixer 27 vented screw compression section 23 just, vented screw exhaust section 24, vented screw fusion compression section 25 and vented screw metering section 26, the clutch end of the vented screw material feeding section 22 and second drive unit 3 is in transmission connection, the two ends of devolatilizing barrel 18 are affixed with second drive unit 3 and mould shape device 6 respectively, the discharging opening of described airtight chamber is packed near on the devolatilizing barrel 18 of vented screw material feeding section 22 1 sides, airtight chamber communicates with the inner chamber of devolatilizing barrel 18, described flange 20 is packed near on the devolatilizing barrel 18 of mould shape device 6 one sides, be set with heating collar 19 on the excircle end face of flange 20, the inwall of described heating collar 19 contacts with the excircle end face of flange 20, one end of described melt pressure sensor 21 passes heating collar 19, flange 20 and devolatilizing barrel 18 are contained in the inner chamber of devolatilizing barrel 18, five heating watt covers are housed on the devolatilizing barrel 18 between flange 20 and the airtight chamber, 20 direction sets gradually and is respectively first heating watt cover 28 described five heating watt covers along airtight chamber to flange, second heating watt cover 29, the 3rd heating watt cover 30, the 4th heating watt cover 31 and slender acanthopanax heat watt cover 32, be provided with steam vent 33 with described vented screw exhaust section 24 corresponding devolatilizing barrels 18, described steam vent 33 is arranged between second heating watt cover the 29 and the 3rd heating watt cover 30, one end of described blast pipe 34 is contained in the steam vent 33, vacuum-pumping further removes volatile matter, devolatilization and mixing are dispersed on the single screw rod 17 of an exhaust and realize, the airtight chamber that is provided with observation window 9 and vacuum interface 10 is adopted in connecting between the quantitative feeding preheating device 4 that adds the front and the single screw rod extrusion device 8, not only be beneficial to devolatilization, also can make entire equipment carry out the extrusion molding that moisture wood is moulded mixed material continuously simultaneously, reach the technique effect of the one-step method extrusion equipment of two rank series connection.The single screw rod 17 of exhaust also can adopt the existing used single screw rod of single screw extrusion molding machine, and melt pressure sensor 21 is an outsourcing piece, and other composition and annexation are identical with the specific embodiment two or three.
The specific embodiment six: in conjunction with Fig. 1～Fig. 4 present embodiment is described, second drive unit 3 of present embodiment is made up of second motor 35 and second decelerator 36; The clutch end of described second motor 35 is in transmission connection with vented screw material feeding section 22 by second decelerator 36.So be provided with, simple in structure, be beneficial to assembling.Second motor 35 and the 36 equal outsourcings of second decelerator.Other composition and annexation are identical with the specific embodiment five.
The specific embodiment seven: in conjunction with Fig. 1, Fig. 2 present embodiment is described, the total length L 1 of the feed screw 12 of present embodiment is 500～1500mm, and the largest diameter 1 of feed screw 12 is 60～300mm.In the present embodiment, the temperature of feeding machine barrel 13 is controlled in 50～180 ℃ of scopes, makes the temperature that material is preheating in feeding procedure to be needed.Other composition and annexation are identical with the specific embodiment three.
The specific embodiment eight: in conjunction with Fig. 1, Fig. 3 present embodiment is described, the draw ratio of the single screw rod 17 of the exhaust of present embodiment is 26～42: 1, and the largest diameter 2 of the single screw rod 17 of exhaust is 45～260mm, to reach good exhaust effect.Other composition and annexation are identical with the specific embodiment five.
The specific embodiment nine: present embodiment is described in conjunction with Fig. 1～Fig. 4, the screw column 37 of the vented screw material feeding section 22 of present embodiment is a cylindrical structure, the vented screw just screw column 38 of compression section 23 is a conical structure, the cross-sectional area of the screw column 38 of the first compression section 23 of vented screw and screw column 37 intersections of vented screw material feeding section 22 equals the cross-sectional area of the screw column 37 of vented screw material feeding section 22, the cross-sectional area of the screw column 38 of the first compression section 23 of vented screw increases gradually along the direction of vented screw exhaust section 24, the conical structure that the screw column 40 of the screw column 39 of vented screw exhaust section 24 and vented screw fusion compression section 25 increases along the direction of vented screw metering section 26 gradually for cross-sectional area, the cross-sectional area of the screw column 38 of the screw column 38 of the first compression section 23 of vented screw and screw column 39 intersections of vented screw exhaust section 24 is greater than the screw column 39 of vented screw exhaust section 24 and the cross-sectional area of the screw column 39 of screw column 38 intersections of the first compression section 23 of vented screw, the screw column 41 of vented screw metering section 26 disperses the screw column 42 of mixer 27 to be the cylinder of equal diameters with the vented screw pin, the cross-sectional area of the screw column 40 of vented screw fusion compression section 25 and screw column 41 intersections of vented screw metering section 26 equals the cross-sectional area of the screw column 41 of vented screw metering section 26, along the circumferential direction be provided with a plurality of pins 43 on the screw column 42 of vented screw pin dispersion mixer 27, to reach the good mixing dispersion effect.Other composition and annexation are identical with the specific embodiment five.
The specific embodiment ten: in conjunction with Fig. 1～Fig. 4 present embodiment is described, present embodiment is to utilize a specific embodiment of extrusion equipment of the present invention (maximum gauge of the single screw rod 17 of exhaust is Φ 45mm) preparation 4mm * 40mm wood plastic composite product.At first the wood plastic composite raw material is made into six kinds of wood by the mixing of the percentage by weight in the table 1 and moulds mixed material.Its concrete technical process is: the mixed material in the hopper 11 is Φ 90mm by maximum gauge, length is that the feed screw 12 of 1400mm passes through feeding machine barrel 13 speed continuous flow rate on request, the heating jacket 14 that is arranged at feeding machine barrel 13 outsides is with 13 heating of feeding machine barrel, make its temperature remain on 110 ℃, mixed material is preheating to more than 100 ℃ later through feeding machine barrel 13, arrive in the airtight chamber afterwards, airtight chamber is provided with observation window 9 and vacuum interface 10 so that devolatilization, the feeding mouth place that mixed material behind the preliminary devolatilization of process is fallen single screw rod extrusion device 8, the rotating speed of second motor 35 single screw rod 17 of control exhaust after second decelerator 36 slows down, it is remained in 15～60r/min scope, optimum speed is controlled in 15～40r/min scope, the control rate of feeding is lower than the material feeding speed of the single screw rod 17 of exhaust, the draw ratio of the single screw rod 17 of exhaust is 28: 1, logical cooling water in the single screw rod 17 of exhaust, devolatilizing barrel 18 is provided with five heating watt covers, first heating watt cover 28, second heating watt cover 29, the 3rd heating watt cover 30, the temperature of the 4th heating watt cover 31 and slender acanthopanax heat watt cover 32 is controlled to be 150 ℃ respectively, 160 ℃, 170 ℃, 165 ℃ and 165 ℃, the devolatilizing barrel 18 of vented screw exhaust section 24 correspondences is provided with steam vent 33, be convenient to vacuumize further devolatilization, mixed material is through preheating, devolatilization, through vented screw fusion compression section 25, vented screw metering section 26 and vented screw pin disperse mixer 27 fully to be disperseed consolute to form the melt-flow of steady pressure, the temperature of heating collar 19 control flanges 20 is 165 ℃, 21 continuous monitorings of melt pressure sensor show the pressure of melt-flow, at last, melt-flow obtains the wood plastic composite product 45 that sectional dimension is 4mm * 40mm through mould shape device 6, carry-over pinch rolls 46 in traction cutter sweep 7 cut into the length of requirement with adaptive speed drawing.Present embodiment is extruded unit with two rank tandem one-step method of same specification and is compared, have simple in structure, cost is low (can reduce by 30%), power supply capacity (15kW) can reduce by 45%, energy consumption can reduce by 18% advantage.
Table 1
| No. | Wood-fibred kind and consumption. | Plastics kind and consumption. | Lubricant | Compatilizer .. | Other auxiliary agents .. |
| 1 | 40 order wood powders 60% | High density polyethylene (HDPE) 38% | Paraffin 1% | MAPE1％ | |
| 2 | 40 order wood powders 70% | High density polyethylene (HDPE) 28% | Tissuemat E 1% | MAPE1％ | |
| 3 | 40 order powdered rice hulls 50% | Polypropylene 48% | Paraffin 1% | MAPP1％ | |
| 4 | 40 order powdered |
Polypropylene 58% | Paraffin 1% | MAPP1％ | |
| 5 | 40 order wood powders 30% | Polyvinyl chloride 66% | Tissuemat E 1% | Haloflex 1% | Tributyl phosphite 2% |
| 6 | Needle-Shaped Wood-Fiber 50% | High density polyethylene (HDPE) 48% | Paraffin 1% | MAPE1％ |
The specific embodiment 11: in conjunction with Fig. 1～Fig. 4 present embodiment is described, present embodiment is to utilize a specific embodiment of extrusion equipment of the present invention (maximum gauge of the single screw rod 17 of exhaust is Φ 120mm) preparation 20mm * 160mm wood plastic composite product.Its concrete technical process is: the mixed material in the hopper 11 is Φ 120mm by maximum gauge, length is that the feed screw 12 of 1200mm passes through feeding machine barrel 13 speed continuous flow rate on request, the heating jacket 14 that is arranged at feeding machine barrel 13 outsides is with 13 heating of feeding machine barrel, make its temperature remain on 120 ℃, mixed material is preheating to more than 100 ℃ later through feeding machine barrel 13, arrive in the airtight chamber afterwards, airtight chamber is provided with observation window 9 and vacuum interface 10 so that devolatilization, the feeding mouth place that mixed material behind the preliminary devolatilization of process is fallen single screw rod extrusion device 8, the rotating speed of second motor 35 single screw rod 17 of control exhaust after second decelerator 36 slows down, make in its scope that remains on 15～60r/min, optimum speed is controlled in 15～35r/min scope, the control rate of feeding is lower than the material feeding speed of the single screw rod 17 of exhaust, the draw ratio of the single screw rod 17 of exhaust is 32: 1 (long 3840mm), logical cooling water in the single screw rod 17 of exhaust, devolatilizing barrel 18 is provided with five heating watt covers, first heating watt cover 28, second heating watt cover 29, the 3rd heating watt cover 30, the temperature of the 4th heating watt cover 31 and slender acanthopanax heat watt cover 32 is controlled to be 155 ℃ respectively, 165 ℃, 175 ℃, 170 ℃ and 170 ℃, the devolatilizing barrel 18 of vented screw exhaust section 24 correspondences is provided with steam vent 33, be convenient to vacuumize further devolatilization, mixed material is through preheating, devolatilization, make vented screw fusion compression section 25, vented screw metering section 26 and vented screw pin disperse mixer 27 fully to be disperseed consolute to form the melt-flow of steady pressure, the temperature of heating collar 19 control flanges 20 is 165 ℃, 21 continuous monitorings of melt pressure sensor show the pressure of melt-flow, at last, melt-flow obtains the wood plastic composite product 45 that sectional dimension is 20mm * 160mm through mould shape device 6, carry-over pinch rolls 46 in traction cutter sweep 7 cut into the length of requirement with adaptive speed drawing.Present embodiment is extruded unit with two rank tandem one-step method of same specification and is compared, have simple in structure, cost is low (can reduce by 26%), power supply capacity (45kW) can reduce by 48%, energy consumption can reduce by 21% advantage.
Claims (4)
1, a kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod, described extrusion equipment is made up of frame (1), first drive unit (2), second drive unit (3), quantitative feeding preheating device (4), vacuum devolatilization device (5), extrusion device, mould shape device (6) and traction cutter sweep (7); It is characterized in that described extrusion device is single screw rod extrusion device (8), the clutch end of described first drive unit (2) is in transmission connection with quantitative feeding preheating device (4), the discharging opening of described quantitative feeding preheating device (4) is connected by the feeding mouth of vacuum devolatilization device (5) with single screw rod extrusion device (8), the clutch end of described second drive unit (3) and single screw rod extrusion device (8) are in transmission connection, the discharging opening of single screw rod extrusion device (8) is communicated with the feeding mouth of mould shape device (6), one side of the discharging opening of described mould shape device (6) is provided with traction cutter sweep (7), first drive unit (2), second drive unit (3) and single screw rod extrusion device (8) all are packed on the frame (1);
Described vacuum devolatilization device (5) is an airtight chamber, the sidewall of described airtight chamber is provided with observation window (9), the upper end of airtight chamber is provided with vacuum interface (10), and the discharging opening of described quantitative feeding preheating device (4) is connected with the feeding mouth of single screw rod extrusion device (8) by airtight chamber;
Described quantitative feeding preheating device (4) is made up of hopper (11), feed screw (12), feeding machine barrel (13) and heating jacket (14); Described hopper (11) is packed on the frame (1), the clutch end of one end of described feed screw (12) and first drive unit (2) is in transmission connection, described feeding machine barrel (13) is sleeved on the feed screw (12), the inner chamber of feeding machine barrel (13) is communicated with the feeding mouth of airtight chamber and the discharging opening of hopper (11) respectively, described heating jacket (14) is sleeved on the feeding machine barrel (13), and the inwall of heating jacket (14) contacts with the outer wall of feeding machine barrel (13);
Described first drive unit (2) is made up of first motor (15) and first decelerator (16); The clutch end of described first motor (15) is in transmission connection by the end of first decelerator (16) with feed screw (12);
Described single screw rod extrusion device (8) is made up of the single screw rod (17) of exhaust, devolatilizing barrel (18), five heating watt covers, heating collar (19), flange (20), melt pressure sensor (21) and blast pipes (34); The single screw rod of described exhaust (17) is arranged in the inner chamber of devolatilizing barrel (18), the single screw rod of exhaust (17) constitutes by six sections, it is vented screw material feeding section (22), vented screw is compression section (23) just, vented screw exhaust section (24), vented screw fusion compression section (25), vented screw metering section (26) and vented screw pin disperse mixer (27), described vented screw material feeding section (22) is corresponding with the discharging opening of airtight chamber, described vented screw pin disperses mixer (27) near flange (20) one sides, vented screw material feeding section (22) to vented screw pin disperses to be followed successively by between the mixer (27) vented screw compression section (23) just, vented screw exhaust section (24), vented screw fusion compression section (25) and vented screw metering section (26), vented screw material feeding section (22) is in transmission connection with the clutch end of second drive unit (3), the two ends of devolatilizing barrel (18) are affixed with second drive unit (3) and mould shape device (6) respectively, the discharging opening of described airtight chamber is packed near on the devolatilizing barrel (18) of vented screw material feeding section (22) one sides, airtight chamber communicates with the inner chamber of devolatilizing barrel (18), described flange (20) is packed near on the devolatilizing barrel (18) of mould shape device (6) one sides, be set with heating collar (19) on the excircle end face of flange (20), the inwall of described heating collar (19) contacts with the excircle end face of flange (20), one end of described melt pressure sensor (21) passes heating collar (19), flange (20) and devolatilizing barrel (18) are contained in the inner chamber of devolatilizing barrel (18), five heating watt covers are housed on the devolatilizing barrel (18) between flange (20) and the airtight chamber, the direction of (20) sets gradually and is respectively first heating watt cover (28) described five heating watt covers along airtight chamber to flange, second heating watt cover (29), the 3rd heating watt cover (30), the 4th heating watt cover (31) and slender acanthopanax heat watt cover (32), be provided with steam vent (33) with the corresponding devolatilizing barrel of described vented screw exhaust section (24) (18), described steam vent (33) is arranged between second heating watt cover (29) and the 3rd heating watt cover (30), and an end of described blast pipe (34) is contained in the steam vent (33);
Described second drive unit (3) is made up of second motor (35) and second decelerator (36); The clutch end of described second motor (35) is in transmission connection by second decelerator (36) and vented screw material feeding section (22).
2, a kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod according to claim 1, the total length L 1 that it is characterized in that described feed screw (12) is 500～1500mm, and the largest diameter 1 of feed screw (12) is 60～300mm.
3, a kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod according to claim 1, the draw ratio that it is characterized in that the single screw rod of described exhaust (17) is 26～42: 1, and the largest diameter 2 of the single screw rod of exhaust (17) is 45～260mm.
4, a kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod according to claim 1, the screw column (37) that it is characterized in that described vented screw material feeding section (22) is a cylindrical structure, the vented screw just screw column (38) of compression section (23) is a conical structure, the cross-sectional area of the screw column (38) of the first compression section (23) of vented screw and screw column (37) intersection of vented screw material feeding section (22) equals the cross-sectional area of the screw column (37) of vented screw material feeding section (22), the cross-sectional area of the screw column (38) of the first compression section (23) of vented screw increases gradually along the direction of vented screw exhaust section (24), the conical structure that the screw column (39) of vented screw exhaust section (24) and the screw column (40) of vented screw fusion compression section (25) increase along the direction of vented screw metering section (26) gradually for cross-sectional area, the cross-sectional area of the screw column (38) of the screw column (38) of the first compression section (23) of vented screw and screw column (39) intersection of vented screw exhaust section (24) is greater than the screw column (39) of vented screw exhaust section (24) and the cross-sectional area of the screw column (39) of screw column (38) intersection of the first compression section (23) of vented screw, the screw column (41) of vented screw metering section (26) disperses the screw column (42) of mixer (27) to be the cylinder of equal diameters with the vented screw pin, the cross-sectional area of screw column (41) intersection of the screw column (40) of vented screw fusion compression section (25) and vented screw metering section (26) equals the cross-sectional area of the screw column (41) of vented screw metering section (26), along the circumferential direction is provided with a plurality of pins (43) on the screw column (42) of vented screw pin dispersion mixer (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100643528A CN100560335C (en) | 2008-04-22 | 2008-04-22 | A kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100643528A CN100560335C (en) | 2008-04-22 | 2008-04-22 | A kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod |
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| Publication Number | Publication Date |
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| CN101259747A CN101259747A (en) | 2008-09-10 |
| CN100560335C true CN100560335C (en) | 2009-11-18 |
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| CNB2008100643528A Expired - Fee Related CN100560335C (en) | 2008-04-22 | 2008-04-22 | A kind of one-step method wood-plastic composite material extrusion equipment of extruding based on single screw rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102303400A (en) * | 2011-09-21 | 2012-01-04 | 武汉工程大学 | Method and equipment for forming high polymer bar by single screw extruder barrel |
| JP2013256028A (en) * | 2012-06-11 | 2013-12-26 | Sumitomo Heavy Ind Ltd | Injection molding machine |
| CN104400931B (en) * | 2014-11-20 | 2016-10-05 | 福建师范大学 | A kind of double rank extruding and granulating equipment of high rotating speed high shear high dispersive |
| CN104647717A (en) * | 2015-03-02 | 2015-05-27 | 成都瑞途电子有限公司 | Automatic batching system in industrial extrusion processing system |
| CN105946169B (en) * | 2016-07-01 | 2018-01-30 | 何宏雷 | PET vented injection all-in-ones |
| CN108773043A (en) * | 2018-06-24 | 2018-11-09 | 佛山市富硒康生物科技有限公司 | The manufacturing method of extrusion device and filter core with Organic Selenium |
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Application publication date: 20080910 Assignee: Harbin Yang Jing Technology Development Co., Ltd. Assignor: Northeast Forestry University Contract record no.: 2016230000008 Denomination of invention: One-step method wood-plastic composite material extrusion formation device based on single-screw extrusion Granted publication date: 20091118 License type: Exclusive License Record date: 20160412 |
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