CN208068820U - A kind of Full automatic feed system of polymer extruder - Google Patents

Abstract

The utility model is related to a kind of Full automatic feed system of polymer extruder more particularly to a kind of anti-clogging, can the uniformly mixed Full automatic feed mechanism of automatic speed regulation, material.It designs part：The design of material conveyer I, material conveyer II, upper scroll sheet, the design of volute stirring sheet on rabbling mechanism, pressure sensor, upper level sensor, lower level sensor are controlled by may be programmed the operation of computerized control system on storage bin and feeding warehouse and feed bin, and No. I upper laser scanning device of material conveyer is to solid accumulation rate（That is the ratio of the volume of material and compartment volume）Monitoring pass through programmable computerized control system control and stablize charging.It can make the entrance extruder that material is full-automatic, unobstructed by above structure, while material being made to be uniformly mixed in overall process.

Description

A kind of Full automatic feed system of polymer extruder

Technical field

The utility model is related to a kind of polymer extrusion machineries.More particularly to polylactic acid（PLA）Extruder it is full-automatic Feed system.

Background technology

Existing extruder feeding mechanism uses helical feed polylactic acid（PLA）Mixture is easy to block；Graininess polylactic acid Since surface is smooth, screw conveyor easily skids in gap when conveying, and material, which is stagnated, to advance.Processing material blockage problem is taken When it is laborious, it is serious to reduce production efficiency and productivity.

Conventional extruder feeding mechanism needs artificial timing feeding, and the degree of automation is low, increases cost of labor, bothersome to take Power.Existing screw conveyor is to control inlet amount according to the speed of spiral simultaneously, when Manual material feeding rear feeding amount becomes larger, is easy Block pipeline；When feeding warehouse is not expected soon, inlet amount becomes smaller, and production efficiency reduces, so this feeding manner cannot accurately control Charging rate.

Prepare different performance polylactic acid（PLA）It needs to add different catalyst（Such as it prepares with high molecular weight, difference The poly-lactic acid material of optical purity and macroscopic property is using less toxic zinc class catalyst）, catalyst is generally powdered object, Particles of polylactic acid must be uniformly mixed with catalyst fines, can just play the role of it is sufficiently catalytic, to squeeze out optical purity stablize, heat The reliable product of mechanical property.Without mixing mechanism in classic screw extruder feed bin, in mixture powder material can from Granular material is fallen in gap, is deposited in bin bottom, influences material proportion, to influence extruded material optical purity, heating power The performances such as, hardness.

So design a kind of anti-clogging can the uniformly mixed Full automatic feed mechanism of automatic speed regulation in polymer modification It is extremely important in processing.

Utility model content

The technical problem to be solved by the utility model is to overcome the shortage of prior art, a kind of anti-clogging, material are designed It is uniformly mixed, the extruder feeding mechanism of low cost, high degree of automation.

For the problems such as above-mentioned material of solution easily blocks, material mixing is uneven, the degree of automation is low, the utility model passes through Following technical solution is realized：

A kind of Full automatic feed system of polymer extruder, feature are：Full automatic feed system is designed with volute Plate, material conveyer I, material conveyer II, arc blender, automation bin device, programmable computer controller, Laser scanning device and intelligent star-shaped discharge valve device.

Material conveyer I, material conveyer II in the Full automatic feed system of this polymer extruder Number scroll sheet is together in series by chain link, loop is formed, by motor drive chain link pivoting.When material is rigid by charging feed bin When into material conveyer II, material only has the speed of vertical direction, is zero in scroll sheet direction of motion speed, material and volute Plate begins with relative motion, and material pushes advance between the gap of adjacent scroll sheet, and while advance, material is at scroll sheet interval Rear end accumulation, height it is higher and higher, due to scroll sheet upper end bending design, solid accumulation to certain altitude overturn fall, this The overturning of sample material, which is fallen, to be achieved the effect that uniformly mixed, then reaches feed entrance.If scroll sheet roughness is too big, object can be made Material is easy to be trapped on scroll sheet in feed entrance, so scroll sheet roughness is less than 0.1 micron.Scroll sheet is close to barrel wall It closes, the material being trapped on barrel wall can be scratched in this way.The design of this material conveyer when transported material not only It prevents feed blocking and the effect that turning over materials keeps its uniformly mixed can be played.

There are four for detecting solid accumulation rate for the Full automatic feed system design of this polymer extruder Laser scanning device, deposition rate are the ratios of the volume and partition room volume of partition room material, and laser scanning device is mounted on phase On adjacent scroll sheet compartment, laser scanning device is connected with programmable computerized control system, by may be programmed computerized control system control Deposition rate processed, if deposition rate is too big, material does not have in partition room and stirs uniformly mixed effect；If deposition rate is too small, The scarce capacity of material conveying, so deposition rate control, between 50% ~ 80%, when average tap rate is more than 80%, motor turns Speed increases, and deposition rate reduces；When average tap rate is less than 50%, motor speed reduces, and deposition rate increases, steady to ensure Fixed charging.

Automation bin device in the Full automatic feed system of this polymer extruder includes storage feed bin With charging feed bin, be equipped with arc blender in storage feed bin, arc blender is made of three-level arc blender, from the bottom up according to Secondary to be I grade of arc blender, II grade of arc blender and III grade of arc blender, every grade of blender have pressure sensor, presses Force snesor is connected with programmable computerized control system, when material touches certain first class pressure sensor, by may be programmed computer control System processed controls corresponding arc blender operating, and material is made to be uniformly mixed in storage feed bin.I grade of arc blender, II grade of arc Shape blender and III grade of arc blender all separately design there are six can turning over materials arc panel, if arc panel rough surface Degree is too big, and material can be trapped on arc panel, so arc panel surface roughness is less than 0.4 micron.

Storage feed bin upper end in the Full automatic feed system of this polymer extruder is equipped with high-order material position and passes Sensor, lower end are equipped with low level level sensor；High charge level sensor and low level sensor all with programmable computerized control system Connection when storing the low level sensor of material triggering in feed bin, is needed by programmable computerized control system prompt storage feed bin Charging, when storing that material triggers high charge level sensor in feed bin, by programmable computerized control system prompt storage feed bin into Material finishes.

There is the star-like discharging of intelligence in storage feed bin lower end in the Full automatic feed system of this polymer extruder Valve is connect with programmable computerized control system, and feeding warehouse upper end is equipped with high-order level sensor, and lower end is sensed equipped with low level material position Device, charging feed bin and the star-shaped discharge valve linkage for storing bin bottom, are controlled by programmable computerized control system, when feeding warehouse material Star-shaped discharge valve is automatically closed when the high-order level sensor prompt in position is high-order, when the low level level sensor prompt of charging feed bin is low When, star-shaped discharge valve automatically opens.

The operating method of the Full automatic feed system of this polymer extruder, it is characterised in that：

Storage feed bin charging first, when high charge level sensor is sent out by programmable computerized control system and carries in storage feed bin When showing, charging finishes;Material enters material conveyer I by storing the intelligent star-shaped discharge valve of feed bin lower end later, by object Expect that conveyer I enters charging feed bin, when feeding material triggering high charge level sensor in feed bin, is controlled by programmable computer System controls star-shaped discharge valve closing, and material conveyer I stops charging, when feeding the level sensor prompt high position in feed bin Star-shaped discharge valve is automatically closed, level sensor prompt it is low when, star-shaped discharge valve automatically opens, material conveyer I start into Material.The material fed in feed bin enters extruder feeding mouth for No. II by material conveyer.

Above-mentioned novel extrusion machine feeding mechanism has the advantage that：

1. feeding mechanism is anti-blocking.The scroll sheet, which is connected to be driven by motor by chain link, to be moved forward, and material enters two whirlpools Shape plate compartment, follows scroll sheet to move, and material is 50% ~ 80% deposition rate always between volute piece, avoids fed material from being blocked, together When also avoid granular material material conveying skid on the way.And then increase quantity-produced ability, increase productivity and Productivity.

2. material is uniformly mixed.It is equipped with three-level blender in Storage Silo, material is made to be uniformly mixed from top to bottom.Conveyer Can turning over materials design turning over materials while convey material, keep it uniformly mixed.It also is provided with stirring in charging feed bin simultaneously Device makes material be uniformly mixed.The design that this overall process is mixed material makes material proportion balance, and properties of product are stablized.Scroll sheet On have an arc groove, material is overturn in arc groove makes material be uniformly mixed.

3. whole-course automation.By taking a defective material is thrown in seven days by factory as an example, design storage feed bin stores seven days materials, material position It is automatically reminded to when high-order and material position low level.Feed bin and storage bin bottom star-shaped discharge valve automatic linkage are fed, is fed in feed bin Level sensor prompt it is high-order when star-shaped discharge valve be automatically closed, when level sensor prompts low level, star-shaped discharge valve is automatic It opens.It can stir and be equipped with laser scanner between anti-clogging conveyer each two scroll sheet, monitor the deposition rate between each partition, instead Motor speed is automatically adjusted after feedforward information, to adjust the deposition rate of each partition room.Whole-course automation reduces human cost, Accurate conveying material.

Description of the drawings

Fig. 1：Extruder system structure chart.

Fig. 2：Extruder feeding mechanism system construction drawing.

Fig. 3：Scroll sheet front view.

Fig. 4:Scroll sheet left view.

Fig. 5：Agitating device front view.

Fig. 6：Agitating device vertical view.

Fig. 7：No. II structure chart of material conveyer.

Shown in Fig. 1-Fig. 7：1. 2. 3. low level sensor of agitating device, 4. star-shaped discharge valve of high charge level sensor, 5. object Expect conveyer No. II 9. laser scanner, 10. scroll sheet of No. I 6. 7. low level sensor of high charge level sensor, 8. material conveyer 11. pressure sensor, 12. programmable computerized control systems.

Specific implementation mode

As shown in Figure 1, the utility model introduces a kind of Full automatic feed system of polymer extruder, including high charge level passes Sensor 1, blender 2, low level sensor 3, star-shaped discharge valve 4, material conveyer No. I 5, pressure sensor 11；High charge level Sensor 6, low level sensor 7, material conveyer No. II 8, laser scanner 9, scroll sheet 10, programmable computerized control system 12。

As shown in Figure 1, the material of 7 days consumptions can be stored in storage feed bin, there is three-level agitating device 2 in storage bin, Blender is stirred when machine is run according to I grade of arc blender of how much startups of material, II grade of arc blender and III grade of arc Device is mixed, ensures that material is the state that is uniformly mixed always in storage feed bin and charging feed bin, storage stock bin body is equipped with high charge level Sensor 1, low level sensor 3, when material is reduced to low level sensor 3, above-mentioned low level sensor passes through programmable Computerized control system 12 is alarmed, and prompts to need to feed to feed bin, above-mentioned when charging when material rises to high charge level sensor 1 High charge level sensor is alarmed by programmable computerized control system, and charging is prompted to terminate.The bottom of feed bin is equipped with star-shaped discharge valve 4, control storage feed bin and material conveyer No. I 5 be connected to or closing, star-shaped discharge valve 4 is by programmable computerized control system 12 Control, rotary feeding, it is ensured that continuous uniform is fed, and feed bin and material conveyer No. I 5, cut-out are effectively completely cut off when simultaneously closing off Charging, when feeding material arrival high charge level sensor 6 in feed bin, above-mentioned high sensor is by may be programmed computerized control system certainly Dynamic cut-out star-shaped discharge valve 4, while No. I 5 motors of material conveyer are cut off by programmable computerized control system 12, stop into Material；When supplies consumption is to low level sensor 7 in charging feed bin, above-mentioned low level sensor passes through programmable computer control system System 12 starts star-shaped discharge valve 4 automatically, while starting No. I 5 motors of material conveyer and starting to feed.

Feeding mechanism structure as shown in Figure 2, charging feed bin warehouse are equipped with high charge level sensor 6, low level sensor 7, on It states high charge level sensor and low level sensor is all connected to programmable computerized control system.It feeds and is equipped with blender 2 in feed bin, Above-mentioned blender be always ensured that charging feed bin in material be uniformly mixed.It feeds feed bin lower end and is equipped with material conveyer No. II 8, by Motor drives chain link rotation, chain link to be equipped with several scroll sheets 10, and above-mentioned scroll sheet is close to barrel, and there are two arcs on scroll sheet 10 Shape slot, material stir in arc groove, are played to material and stir translocation, stroke compartment one by one, object between two scroll sheets Material enters compartment from charging feed bin, and scroll sheet is followed to stir forward.Set that there are four laser scanners 9 on material conveyer No. II 8 Couple with programmable computerized control system 12, the deposition rate for monitoring material in compartment, i.e. the volume of material and compartment volume Ratio, when average tap rate is more than 80%, signal accelerates material conveyer No. II 8 by programmable computerized control system 12 Motor so that deposition rate is reduced, when average tap rate is less than 50%, signal passes through programmable 12 deceleration material of computerized control system The motor that conveyer is No. II 8 makes deposition rate improve, to make charging maintain stable state.

It is illustrated in figure 3 scroll sheet 10, the barrel that structure and material conveyer are No. II 8 is close to close, and is following loop chain The material stopped on barrel can be scratched while advance, there are two arc grooves on scroll sheet 10, are pushed when moving forward Material stirs in arc groove while material moves forward, and in transportational process also material can be uniformly mixed.

It is illustrated in figure 4 blender 2, which is mounted on storage feed bin and feeds in the warehouse lid of feed bin.By six arcs Plate is constituted, and stirring tipping effect is played to material in feed bin, stores the arc blender in feed bin by three-level arc agitating device Composition, is followed successively by I grade of arc blender, II grade of arc blender and III grade of arc blender, every grade of agitating device from the bottom up Have that pressure sensor 11, pressure sensor 11 can transmit signal when material is accumulated in feed bin and touches certain level-one agitating device To programmable computerized control system 12, the rotation of appropriate level blender ensures that material is uniformly mixed in feed bin.

Claims (4)

1. a kind of Full automatic feed system of polymer extruder, it is characterised in that：The Full automatic feed system includes volute Plate, material conveyer I, material conveyer II, arc blender, automation bin device, programmable computer controller, Laser scanning device and intelligent star-shaped discharge valve device；

Scroll sheet is together in series by the material conveyer II by chain link, forms loop, by motor drive chain around shaft rotation Dynamic, roughness is less than 0.1 micron, and scroll sheet is close to close with barrel wall；

There are four the laser scanning devices, is separately mounted to above the interval of the adjacent scroll sheet, the laser scanning dress It sets and is connected with the programmable computer controller；

The automation bin device includes storage feed bin and charging feed bin, and being equipped with the arc in the storage feed bin stirs Device, the arc blender are made of three-level arc agitating device, are followed successively by I grade of arc blender, II grade of arc from the bottom up Blender and III grade of arc blender, every grade of blender have pressure sensor, the pressure sensor and the programmable electricity Brain control device is connected.

2. a kind of Full automatic feed system of polymer extruder as described in claim 1, it is characterised in that：The storage material The three-level agitating device in storehouse all separately design there are six can turning over materials arc panel, the rough surface of the arc panel Degree is less than 0.4 micron.

3. a kind of Full automatic feed system of polymer extruder as described in claim 1, it is characterised in that：The storage material Storehouse upper end is equipped with high-order level sensor, and lower end is equipped with low level level sensor；The high charge level sensor and the low material position Sensor is all connect with the programmable computer controller；There is intelligent star-shaped discharge valve in the storage feed bin lower end, and described Programmable computer controller connection.

4. a kind of Full automatic feed system of polymer extruder as described in claim 1, it is characterised in that：The charging material Storehouse upper end is equipped with high-order level sensor, and lower end is equipped with low level level sensor, the charging feed bin and the storage feed bin bottom The intelligent star-shaped discharge valve automatic linkage in portion, is controlled by the programmable computer controller.