CN106915057A - Processing technology of PVC (polyvinyl chloride) plate - Google Patents
Processing technology of PVC (polyvinyl chloride) plate Download PDFInfo
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- CN106915057A CN106915057A CN201710168860.XA CN201710168860A CN106915057A CN 106915057 A CN106915057 A CN 106915057A CN 201710168860 A CN201710168860 A CN 201710168860A CN 106915057 A CN106915057 A CN 106915057A
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- machine barrel
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- 238000012545 processing Methods 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 229920000915 polyvinyl chloride Polymers 0.000 title claims description 62
- 239000004800 polyvinyl chloride Substances 0.000 title claims description 62
- 239000000463 material Substances 0.000 claims abstract description 59
- 238000001125 extrusion Methods 0.000 claims abstract description 24
- 238000011068 loading method Methods 0.000 claims description 23
- 238000005520 cutting process Methods 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 5
- 239000004014 plasticizer Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims 1
- 230000035611 feeding Effects 0.000 description 41
- 238000000034 method Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 10
- 239000000843 powder Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000007789 sealing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000011232 storage material Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/298—Feeding the extrusion material to the extruder in a location other than through a barrel, e.g. through a screw
-
- 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
- B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of plate processing, and provides a processing technology of a PVC plate. The PVC extruder is used in the extrusion forming step, so that the material breaking and stopping can be prevented in time, the stable processing of the extruder is ensured, and the high-quality PVC plate is produced.
Description
Technical field
The present invention relates to technical field of board processing, and in particular to a kind of extrusion forming processing technology of PVC board.
Background technology
Upholstery material is seen everywhere in we live, such as plasterboard, aluminium-plastic panel and PVC board etc..Wherein PVC board
Because its installation procedure is simple, maintenance cost is low, the advantage, market such as material Environmental Safety, long service life and its modernization aesthetic feeling
Demand rapidly increases.
Extrusion forming is and its an important ring in PVC board processing technology, and the usually used equipment of the technique is extruded for PVC
Machine, the operation principle of this equipment is the pressure and shearing force produced by screw rod rotation so that material can be moulded fully
Change and uniform mixing, then be molded by mouth mold.But the equipment easily occurs hopper in production and builds bridge and fracture occurs and stops
The failure of machine, arch formation refer to powder when by hopper discharge outlet, form domes between powder, block showing for outlet
As.
CN102407596A discloses a kind of PVC auxiliary feedings extruder, including frame, barrel, main charging spout, feeding are twisted
Dragon, feed well, auxiliary feeding car, auxiliary feeding auger and feed-control device；Barrel, master are installed with the upper end of frame
Charging spout and feeding auger, are provided with revolvable extrusion screw rod in barrel, and feed well is fixedly connected with the upper end of barrel
And communicated with the inside of barrel；The right-hand member of feeding auger is located in feed well through main charging spout, is consolidated in the right-hand member of feeding auger
Dingan County is equipped with the powder flow meter that can measure mass flow；Drive has been respectively fixedly connected with the left end of feeding auger and extrusion screw rod
Dynamic motor；There is auxiliary feeding car in the left of frame, auxiliary feeding auger is installed between auxiliary feeding car and feed well, aid in
The discharging opening of feeding auger is corresponding with the import of feed well, and stand-by motor is provided with auxiliary feeding auger；Sent in auxiliary
Feed-control device is installed with truck, the signal output part of powder flow meter is believed with the powder flow of feed-control device
Number input is electrically connected by wire, motor signal output end and the control auxiliary motor device letter of feed-control device
Number input is electrically connected by wire.The technical scheme is measured by powder flow meter and twisted by feeding from main charging spout
Whether the mass flow of dragon feeding is sufficient to judge the material entered in barrel；In the case of insufficient, auxiliary electricity can be opened
Machine, feed well is sent material into by auxiliary feeding auger from auxiliary feeding car, so as to meet the inventory into barrel.
But above-mentioned technical proposal needs to wait powder flow meter to monitor mass flow less than after setting value, and feedback feeds
Material control device, be then turned on stand-by motor, material is sent into by feed well from auxiliary feeding car by auxiliary feeding auger, i.e., from
PVC extruders occur to build bridge to supplement and expect that feed well experienced very long waiting process, PVC extruders be easy to occur because
Material could not be sent to and the situation of fracture shutdown in time, the PVC profile quality of extrusion be influenceed, so as to influence final PVC board
Quality.
The content of the invention
It is an object of the invention to provide a kind of processing technology of PVC board, can in time prevent PVC extruders fracture from shutting down,
Ensure extrusion machining stabilization, produce high-quality PVC board.
To reach above-mentioned purpose, the technical scheme is that：A kind of processing technology of PVC board, its processing technology are provided
The step of it is as follows：
A, raw material mixing：By 90~100 parts of polyvinyl chloride resin, 1~3 part of stabilizer, 3~10 parts of filler, plasticizer 6~8
Part, 2~8 parts of lubricant are sufficiently mixed；
B, stirring：Mixture obtained in step A is first passed through into homogenizer stirring, when material temperature reaches 110~120 DEG C
When, enter in cold mixer, allow material temperature to be down to 40 DEG C, overall time control is in 7~8min；
C, extrusion forming：Mixture prepared by step B is placed in extrusion forming in extruder, PVC profile is obtained；
D, cooling：PVC profile obtained in step C is placed in Vacuum shaping, cooling；
E, cutting：PVC profile after being cooled down obtained in step D is drawn to cutting machine and is cut；
A kind of PVC extruders, including loading hopper, feed pipe, feeding cylinder and the machine barrel being sequentially communicated are used in step C, is entered
In expects pipe be horizontally disposed with have the first screw rod, the first helical blade is provided with the first screw rod, control feed pipe temperature be 140~
170 DEG C, being horizontally disposed with machine barrel has the second screw rod, a diameter of 90mm of the second screw rod, and rotating speed is 12~18r/min, the second spiral shell
The second helical blade is provided with bar, controls the temperature of the machine barrel at 160~190 DEG C, the end of the first screw rod is fixedly connected
The end for having the first motor, the second screw rod is fixedly connected with the second motor, and feed pipe is slidably connected with feeding cylinder, controls feeding cylinder
Temperature at 140~190 DEG C, feeding cylinder includes the cylinder and storage chamber of connection, and cylinder includes the charging aperture connected with feed pipe,
Connected with machine barrel and telescopic discharging opening, the company of rotation in stage clip, storage chamber is fixedly connected between the bottom of cylinder and machine barrel
The drive shaft that can be connected or disconnect with the second screw rod is connected to, the hand of spiral phase with the second helical blade is provided with drive shaft
The 3rd anti-helical blade.
Wherein, the principle of extrusion moulding in step C is as follows：Elder generation adds material, material to be set from loading hopper entrance from loading hopper
Set in the feed pipe of temperature, the first screw rod in feed pipe is rotated in the presence of the first motor, then drive the first blade to turn
Move so as to stir material, material enters cylinder from the charging aperture of cylinder, and a part is stored in storage chamber, a part of from discharging opening stream
Go out, into machine barrel, the second screw rod in machine barrel is rotated in the presence of the second motor, then drive the second blade to rotate so as to stir
Material, the model for selecting common a diameter of 90mm of the second screw rod, the material after stirring is molded by mouth mold again；Flow of Goods and Materials
In the case of normal, under the Action of Gravity Field of material, compression press spring, the material in storage chamber remains static cylinder, when plus
There is arch formation in hopper, material from feed pipe enter feeding cylinder it is less in the case of, the overall gravity of cylinder diminishes, in stage clip
Thrust under, cylinder is with respect to feed pipe upward sliding so that the drive shaft in storage chamber is fixedly connected with the second screw rod, this
When, the second screw rod drives drive shaft turns, and drive shaft drives third blade to rotate, so as to the material stirring in storage chamber be gone out
Come, so as to prevent extruder, because of arch formation, fracture is shut down, it is ensured that extrusion machining stabilization, it is ensured that extrusion forming step institute
The PVC profile quality for obtaining；For the PVC board oxidation by air for preventing from being molded by mouth mold, should at once by extrusion forming gained
PVC board be transferred to vacuum chamber and carry out cooling and shaping, finally cut according to necessary requirement by cutting machine again.
With compared with auxiliary feeding auger is supplemented by way of material, the technical program is by storage chamber in the prior art
Interior storage material, when occurring building bridge in loading hopper, material is reduced in feeding cylinder cylinder, and cylinder is transported upwards in the presence of stage clip
It is dynamic so that the drive shaft in storage chamber is fixedly connected with the second screw rod in feed pipe, i.e., by the second screw rod drive drive shaft with
Third blade is rotated, and the material that will be stored in storage chamber adds in machine barrel be stirred in time, so as to prevent extrusion in time
Machine because of arch formation, shut down by fracture, it is ensured that extrusion machining stabilization, it is ensured that the PVC-type material obtained by extrusion forming step
Amount, further improves the PVC board quality of final gained；Meanwhile, and need to increase the extra members such as stand-by motor in the prior art
PVC extruders compare, the technical program need not increase extra power set, take full advantage of the power in feeding process
Device so that PVC extruders overall structure is simple, and the step in PVC board processing technology is also simplified therewith.
Further, flexible axle, the rotary shaft of being also fixedly connected sequentially on the first motor and the stirring being fixedly connected with the rotating shaft
Leaf, rotary shaft is located in loading hopper, and the rotating speed of rotary shaft is 10~12r/min.
After there is arch formation in loading hopper, fracture can immediately be solved the problems, such as by the storage chamber of casing drum, then
Flexible axle is driven to rotate by the first motor, flexible axle drives rotary shaft to rotate again, and rotary shaft drives paddle to rotate again, so as to destroy
The bridge formation formed in loading hopper so that material is normally conveyed.
Further, support bar is additionally provided between cylinder body outer wall and machine barrel outer wall, support bar is slidably connected with cylinder body outer wall, is propped up
Strut is fixedly connected with machine barrel outer wall.
When cylinder is moved upwards, one end that support bar is connected with cylinder is slided relatively downward, and cylinder is moved upwards
During can be supported bar it is downward frictional force effect so that cylinder upwards motion process it is more steady；Conversely, working as cylinder
When body is moved downward, cylinder can be supported the upward frictional force effect of bar so that the process that cylinder is moved downward also compares
It is more steady.
Further, make after cut-out PVC profile in cutting machine top cutting edge cooling water cooling cast-cutting saw slice in step E
Sawdust is reclaimed with dust exhaust apparatus.PVC profile can be with saw blade frictional heat, the side cooled down by side cutting edge during cutting
Formula can prevent PVC profile from deforming because temperature is raised, meanwhile, many sawdust powder, PVC profile quilt can be produced in cutting process
Sawdust is reclaimed with dust exhaust apparatus in time after cut-out, to ensure cut quality next time.
Brief description of the drawings
Fig. 1 is the structural representation of the PVC extruders of extrusion forming step in the present invention.
Specific embodiment
Reference in Figure of description includes：Loading hopper 1, feed pipe 2, cylinder 3, machine barrel 4, mouth mold 5, the first screw rod
21st, the first motor 22, the first blade 23, flexible axle 10, rotary shaft 11, paddle 12, storage chamber 30, charging aperture 31, chute 32, close
Shrouding 33, discharging opening 34, outer tube 341, inner sleeve 342, drive shaft 35, third blade 36, bearing 37, dovetail tangs 38, swallow
Stern notch 39, stage clip 40, support bar 41, the second screw rod 51, the second blade 52, the second motor 53.
Embodiment one
A kind of processing technology of PVC board that the present embodiment is provided, comprises the following steps：
A, raw material mixing：By 90 parts of polyvinyl chloride resin, 1 part of stabilizer, 3 parts of filler, 6 parts of plasticizer, 2 parts of lubricant fully
Mixing；
B, stirring：Mixture obtained in step A is first passed through into homogenizer stirring, when material temperature reaches 110 DEG C, is entered
In cold mixer, material temperature is allowed to be down to 40 DEG C, overall time control is in 7min；
C, extrusion forming：Mixture prepared by step B is placed in extrusion forming in extruder, PVC profile is obtained；
D, cooling：PVC profile obtained in step C is placed in Vacuum shaping, cooling；
E, cutting：PVC profile after being cooled down obtained in step D is drawn to cutting machine and is cut；
PVC extruder structures as shown in figure 1, loading hopper 1, feed pipe 2, feeding cylinder and machine barrel 4 including being sequentially communicated, its
Middle feeding cylinder includes cylinder 3 and storage chamber 30, and material enters feed pipe 2 from loading hopper 1, then enters feeding cylinder from feed pipe 2, then
Enter machine barrel 4 from feeding cylinder, finally extruded from the mouth mold 5 of machine barrel 4 again, the temperature that feed pipe 2 is controlled in extrusion process is 140
DEG C, the temperature of feeding cylinder is 140 DEG C, and the temperature of machine barrel 4 is 160 DEG C.Being horizontally disposed with feed pipe 2 has the first screw rod 21, first
The left end of screw rod 21 is fixedly connected with the first motor 22, and the first blade 23 is welded with the first screw rod 21, and the first motor 22 drives
First screw rod 21 is rotated, and the first screw rod 21 drives the first blade 23 to rotate again, so that the material entered from loading hopper 1 is stirred, and
Transport material in feeding cylinder；First motor 22 other end relative with the first screw rod 21 be fixedly connected sequentially have flexible axle 10,
In loading hopper 1, the first motor 22 is driving the first screw rod 21 for rotary shaft 11 and paddle 12, rotary shaft 11 and paddle 12
Flexible axle 10 can be also driven to rotate while rotation, flexible axle 10 drives rotary shaft 11 to rotate again, and rotary shaft 11 drives paddle 12 again
Rotate, the rotating speed of rotary shaft 11 is 10r/min, so as to be stirred to the material in loading hopper 1, prevent generation in loading hopper 1
Build bridge, or the bridge formation that can not completely prevent and produce in destruction loading hopper 1；The right side of the cylinder 3 of feeding cylinder is communicated with storage
Chamber 30, is used to store part into the material of cylinder 3, and cylinder 3 is connected by charging aperture 31 with feed pipe 2, opened on the outer wall of cylinder 3
There is chute 32 so that the tube wall of feed pipe 2 is slidably connected with the outer wall of cylinder 3, the side seal in cylinder 3 by chute 32 is slided and connected
Be connected to sealing plate 33 so that feed pipe 2 is fixedly connected with sealing plate 33, will charging aperture 31 on the sealing plate 33, feed pipe 2
Material by charging aperture 31 enter cylinder 3；Cylinder 3 is connected with machine barrel 4 by discharging opening 34, and discharging opening 34 includes and cylinder 3
The outer tube 341 of connection, the inner sleeve 342 connected with machine barrel 4, and inner sleeve 342 are slidably connected with the sealing of outer tube 341；Storage
Deposit and drive shaft 35 is rotatably connected to by bearing 37 in chamber 30, be welded with third blade 36 in drive shaft 35, drive shaft 35 and the
The relative end of two screw rods 51 is provided with dovetail tangs 38, and the second screw rod 51 end relative with drive shaft 35 is provided with and dovetail tangs
The dovetail groove 39 of 38 clampings matching；Stage clip 40 is fixedly connected between the outer wall of the lower end of cylinder 3 and the outer wall of machine barrel 4, for giving
Cylinder 3 provides a upward thrust；Support bar 41 at a right angle, support bar are additionally provided between the outer wall of cylinder 3 and the outer wall of machine barrel 4
41 one end are slidably connected with the outer wall of cylinder 3, and the other end is fixedly connected with the outer wall of machine barrel 4, for stablizing moving up and down for cylinder 3
Journey；Being horizontally disposed with machine barrel 4 has the second screw rod 51, a diameter of 90mm of the second screw rod 51, and rotating speed is 12r/min, the second screw rod
The second blade 52 is welded with 51, the left end of the second screw rod 51 is fixedly connected with the second motor 53, and the second motor 53 drives second
Screw rod 51 is rotated, and the second screw rod 51 drives the second blade 52 to rotate again, so that the material that stirring enters from casing drum is extruded, and will
Material is transported to mouth mold 5.
The concrete operation method of extrusion forming step is as follows：First material is added from loading hopper 1, while opening the first motor
22 and second motor 53, the first motor 22 drives the first screw rod 21 to rotate, and the first screw rod 21 drives the first blade 23 to rotate simultaneously,
Material is stirred by the first blade 23 into feed pipe 2 from loading hopper 1 and is transferred to charging aperture 31, while the rotation of the first motor 22
Also flexible axle 10 can be driven to rotate, then drives rotary shaft 11 to rotate by flexible axle 10, rotary shaft 11 drives paddle 12 to rotate again, stirs
Mix leaf 12 to be rotated in loading hopper 1, can not only prevent material from being built bridge in loading hopper 1, even if inevitably occurring
Build bridge, also bridge formation can be destroyed by the rotation of paddle 12；The material of feed pipe 2 entering from the sealing plate 33 of cylinder 3
Material mouth 31 enters cylinder 3, and the material of a part is flowed out by discharging opening 34, and the material of a part is slowly stored in storage chamber 30
Interior, the material for flowing out discharging opening 34 enters in machine barrel 4, because the work of the second motor 53 drives the second screw rod 51 to rotate, the second spiral shell
Bar 51 drives the second blade 52 to rotate simultaneously so that extrude stirring by the second screw rod 51 into the material in machine barrel 4, and from mouth mold
5 outflows；If arch formation occurs in loading hopper 1, reduced from the material of the outflow of feed pipe 2, the material in feeding cylinder cylinder 3 is also gradually
Reduce so that the overall gravity of feeding cylinder reduces, until under thrust of the cylinder 3 in stage clip 40, starting motion upwards, at this moment
Wait, the discharging opening 34 of the bottom of cylinder 3 extends, i.e., outer tube 341 is moved upwards with respect to inner sleeve 342, at the same support bar 41 to
Under force of sliding friction effect under, the process of the motion upwards of cylinder 3 is also more steady, during cylinder 3 upwards motion, its
The chute of slip relative with the meeting of sealing plate 33 and the generation of the inwall of cylinder 3 that feed pipe 2 is fixedly connected, feed pipe 2 and the side wall of cylinder 3
32 can also occur relative slip, i.e. the position of the entirety of feed pipe 2 remains in that constant, and simply feeding cylinder is integrally moved up；When
When cylinder 3 is moved to 39 clamping of dovetail groove of the screw rod 21 of dovetail tangs 38 and first of drive shaft 35, due to drive shaft 35 and storage
The side wall for depositing chamber 30 rotates connection by bearing 37, so clamping effect and the rotary inertia of the first screw rod 21 in dovetail groove 39
Double action under, the first screw rod 21 can drive drive shaft 35 also and then to rotate, and drive shaft 35 drives third blade 36 to rotate again,
So as to will in storage chamber 30 storage material stirring out, into cylinder 3, enter back into machine barrel 4, with timely supplement material, in time
Fracture in machine barrel 4 is prevented, so as to prevent the phenomenon of fracture shutdown in time；Stirred when the bridge formation in loading hopper 1 is stirred leaf 12
After mixing destruction, material may proceed to enter in cylinder 3 so that the overall gravity of feeding cylinder becomes big, and feeding cylinder is integrally moved down, drive shaft
35 and first screw rod 21 separate, third blade 36 stops stirring, and the opposing seal plate 33 of cylinder 3 and support bar 41 are moved down, gone out
Outer tube 341 at material mouth 34 seals the outside for being socketed in inner sleeve 342, and stage clip 40 is compressed downwardly, and material enters machine barrel 4,
Extruded from mouth mold 5 again, that is, recover material conveying under normal circumstances；Material obtains PVC board after mouth mold 5 is molded, then
The PVC board obtained by extrusion forming is transferred into vacuum chamber at once carries out cooling and shaping, is finally cut by cutting machine again, cuts
With cooling water cooling cast-cutting saw slice during cutting, cutting uses dust exhaust apparatus to reclaim sawdust after finishing.
Embodiment two
The present embodiment is differed only in embodiment one, and step A is by 100 parts of polyvinyl chloride resin, 3 parts of stabilizer, filler 10
Part, 8 parts of plasticizer, 8 parts of lubricant are sufficiently mixed；In step B when material temperature reaches 120 DEG C, enter in cold mixer；Step C
The middle temperature for controlling feed pipe 2 is 170 DEG C, and the temperature of feeding cylinder is 190 DEG C, and the temperature of machine barrel 4 is 190 DEG C, rotary shaft 11
Rotating speed is 12r/min, and the rotating speed of the second screw rod 51 is 18r/min.
Embodiment three
The present embodiment is differed only in embodiment one, and step A is by 95 parts of polyvinyl chloride resin, 2 parts of stabilizer, filler 6
Part, 7 parts of plasticizer, 5 parts of lubricant are sufficiently mixed；In step B when material temperature reaches 115 DEG C, enter in cold mixer；Step C
The middle temperature for controlling feed pipe 2 is 155 DEG C, and the temperature of feeding cylinder is 165 DEG C, and the temperature of machine barrel 4 is 175 DEG C, rotary shaft 11
Rotating speed is 11r/min, and the rotating speed of the second screw rod 51 is 15r/min.
Comparative example
Comparative example provides a kind of traditional PVC board processing technology, will be by the material after mixing, stirring directly by adding
Hopper 1 is added in machine barrel 4, is directly cut again after stirring plasticizing, without being cooled down.
PVC board obtained by embodiment one to three and comparative example is carried out into performance test, test result is shown in Table one：
Table one：
Be can see with the contrast of comparative example by embodiment one to three, prepared by the PVC board technological method for processing
PVC board density is universal higher, illustrates that the PVC board obtained by the processing method, in the moulding process more sufficient stabilization of discharging, is said
Bright PVC extruding-out process processing is more stablized, the bending strength of the PVC board for finally giving, tensile strength, compression strength
It is higher.Therefore, there is good mechanical property by PVC board obtained in the processing method, is a kind of more excellent PVC of performance
Plate.
Above-described is only the preferred embodiment of the present invention, it is noted that for a person skilled in the art,
Without departing from the inventive concept of the premise, some deformations and improvement can also be made, these should also be considered as guarantor of the invention
Shield scope, these effects and practical applicability for implementing all without the influence present invention.The present invention omits technology, the shape of description
Shape, construction part are known technology.
Claims (4)
1. a kind of processing technology of PVC board, it is characterised in that as follows the step of its processing technology：
A, raw material mixing：By 90~100 parts of polyvinyl chloride resin, 1~3 part of stabilizer, 3~10 parts of filler, 6~8 parts of plasticizer, profit
2~8 parts of lubrication prescription is sufficiently mixed；
B, stirring：Mixture obtained in step A is first passed through into homogenizer stirring, when material temperature reaches 110~120 DEG C, row
Enter in cold mixer, allow material temperature to be down to 40 DEG C, overall time control is in 7~8min；
C, extrusion forming：Mixture prepared by step B is placed in extrusion forming in extruder, PVC profile is obtained；
D, cooling：PVC profile obtained in step C is placed in Vacuum shaping, cooling；
E, cutting：PVC profile after being cooled down obtained in step D is drawn to cutting machine and is cut；
Use a kind of PVC extruders in step C, including loading hopper, feed pipe, feeding cylinder and the machine barrel being sequentially communicated, it is described enter
Being horizontally disposed with expects pipe has the first screw rod, and the first helical blade is provided with first screw rod, controls the temperature of the feed pipe
It is 140~170 DEG C to spend, and being horizontally disposed with the machine barrel has the second screw rod, a diameter of 90mm of second screw rod, and rotating speed is 12
~18r/min, is provided with the second helical blade on second screw rod, control the temperature of the machine barrel in 160~190 DEG C, institute
The end for stating the first screw rod is fixedly connected with the first motor, and the end of the second screw rod is fixedly connected with the second motor, the charging
Pipe is slidably connected with the feeding cylinder, controls the temperature of the feeding cylinder at 140~190 DEG C, and the feeding cylinder includes connection
Cylinder and storage chamber, the cylinder include the charging aperture connected with feed pipe, are connected with machine barrel and telescopic discharging opening, described
Stage clip is fixedly connected between the bottom of cylinder and machine barrel, being rotatably connected in the storage chamber can be connected with second screw rod
Or the drive shaft for disconnecting, threeth spiral opposite with the hand of spiral of second helical blade is provided with the drive shaft
Blade.
2. the processing technology of a kind of PVC board according to claim 1, it is characterised in that：On first motor also successively
Flexible axle, rotary shaft and the paddle being fixedly connected with the rotary shaft are fixedly connected with, the rotary shaft is located at the loading hopper
Interior, the rotating speed of the rotary shaft is 10~12r/min.
3. the processing technology of a kind of PVC board according to claim 2, it is characterised in that：The cylinder body outer wall and the machine
Support bar is additionally provided between drum outer wall, the support bar is slidably connected with the cylinder body outer wall, the support bar and the machine barrel
Outer wall is fixedly connected.
4. the processing technology of a kind of PVC board according to claim 3, it is characterised in that：In the step E on cutting machine
Side cutting edge cooling water cooling cast-cutting saw slice, sawdust is reclaimed after cut-out PVC profile using dust exhaust apparatus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710168860.XA CN106915057A (en) | 2017-03-21 | 2017-03-21 | Processing technology of PVC (polyvinyl chloride) plate |
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| CN201710168860.XA CN106915057A (en) | 2017-03-21 | 2017-03-21 | Processing technology of PVC (polyvinyl chloride) plate |
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| CN201710168860.XA Pending CN106915057A (en) | 2017-03-21 | 2017-03-21 | Processing technology of PVC (polyvinyl chloride) plate |
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| CN108000838A (en) * | 2017-11-11 | 2018-05-08 | 惠水县凡趣创意科技有限公司 | A kind of novel plastic extrusion machine |
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| CN112757642A (en) * | 2020-04-02 | 2021-05-07 | 苏州美梦机器有限公司 | Screw type feeding device, material extrusion system and method for 3D printing |
| CN112758614A (en) * | 2020-04-02 | 2021-05-07 | 苏州美梦机器有限公司 | Material conveying system and method |
| CN116605547A (en) * | 2022-09-29 | 2023-08-18 | 郑州市天之蓝环保科技有限公司 | Anti-blocking device for hopper and hopper assembly |
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| CN116605547A (en) * | 2022-09-29 | 2023-08-18 | 郑州市天之蓝环保科技有限公司 | Anti-blocking device for hopper and hopper assembly |
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Application publication date: 20170704 |