CN209273762U - A kind of high molecular material positive displacement positive feed device - Google Patents
A kind of high molecular material positive displacement positive feed device Download PDFInfo
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- CN209273762U CN209273762U CN201821783769.5U CN201821783769U CN209273762U CN 209273762 U CN209273762 U CN 209273762U CN 201821783769 U CN201821783769 U CN 201821783769U CN 209273762 U CN209273762 U CN 209273762U
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Abstract
The utility model discloses a kind of high molecular material positive displacement positive feed device.The device includes power input shaft, swash plate, swash plate seat, piston shoes, pushing piston, piston reset spring, piston guide disk, power transmission set, piston guide disk, power transmission set and screw rod synchronous rotary are driven by power input shaft, pushing piston is forced to move reciprocatingly under the common constraint of piston shoes, swash plate and piston reset spring along half round straight hole of piston guide disk；When power transmission set is rotated counterclockwise from limes superiors point to limit inferior point, pushing piston, which moves, to be retreated, and the volume of half round straight hole becomes larger, and inclined hole outlet is blocked by barrel, and material is compacted in half round straight hole；When power set rotates counterclockwise supreme limit point from limit inferior point, the positive displacement forced conveyance of high molecular material is realized in pushing piston Forward.The utility model has many advantages, such as that material conveying stability is high, material dosing conveys, material wide adaptability.The utility model belongs to technical field of polymer material processing.
Description
Technical field
The utility model belongs to technical field of polymer material processing more particularly to a kind of high molecular material positive displacement is forced
Feeding device.
Background technique
In field of high polymer material processing, the high molecular materials such as extrusion equipment, injection forming equipment are general to be processed into
Type equipment is in addition to having the plasticization unit and forming unit that have excellent performance, and the stability and feeding unit of feeding unit are to material
It is also most important to convey adaptability.The high molecular material feeding device of current main-stream is mainly by charging hopper and feeding device group
At material is relied primarily on from reentering in the screw channel of screw rod, is then relied on the rotational movement of screw rod and is fed forward.Tradition
Feeding device structure is simple, but there are be easy to build bridge in feed inlet when inlet amount depends critically upon material property and heated material
Etc. significant deficiencies.The novel feed way such as the twin-screw forced-feeding device of subsequent appearance, stirring feeder, screw feeder exist
Solves the problems, such as polymer charge bridge to a certain extent, but in blend fill process, particularly with powder stuffing-high score
The co-mixing systems such as seed material, long fiber reinforcement are easy to appear out-phase segregation phenomenon, for example powder raises up, only into pellet not into powder
The great number of issues such as material, fibrous material can not be fed, charging rate is slow.It therefore, is guarantee extrusion molding or injection moulding production line
Steady production, be badly in need of developing novel high molecular material feeding device, it is desirable that the device improves the conveying adaptability to material,
And the factors such as material form, temperature are no longer dependent on, it realizes and stablizes charging.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of high molecular material positive displacement positive feed device, it is able to achieve
In charging independent of factors such as material form, temperature, to the adaptability of material when improving charging, and then realize stablize into
Material.
A kind of high molecular material positive displacement positive feed device of the method: including power input shaft, swash plate, swash plate
Seat, piston shoes, pushing piston, piston reset spring, piston guide disk, power transmission set, charging seat, barrel, screw rod；Swash plate seat,
Charging seat, barrel are fixedly connected sequentially；Swash plate is installed on swash plate seat, and power input shaft is installed on swash plate seat；Power input
Axis, piston guide disk, power transmission set, screw rod are set gradually, and four install with one heart；The plasticizing that screw free end protrudes into barrel is held
It is intracavitary；The inclined-plane of swash plate seat is equipped with several piston shoes uniformly distributed around power input shaft, and piston shoes are connected with pushing piston outer end, pushed away
In material piston protrudes into piston guide disk, power transmission covers, power transmission puts on the inclined hole outlet being equipped with for being connected to plasticizing cavity,
Piston reset spring is set on pushing piston outer end between piston shoes and piston guide disk.
Preferably, the main body of power transmission set is cylindrical, and the main body of power transmission set is cylindrical, in power transmission set
Equipped with staged circular hole；The outer wall of main body is equipped with several equally distributed half round straight holes in a circumferential direction, inclined hole outlet
Through the side wall of main body, the inner cavity of inclined hole outlet half round straight hole and main body.
Preferably, the middle part of barrel is equipped with plasticizing cavity, and the diameter for being plasticized cavity is greater than the outer diameter of screw rod, and plasticizing cavity exists
The outer end of barrel reduces to form cartridge outlet；The leading portion of barrel is equipped with feed cavity, and the radian size of feed cavity is 180 degree, barrel
When being coupled with power transmission set, the front end barrel of barrel, which exports the inclined hole of half, to be blocked, the other half inclined hole exports warp
Feed cavity is connected with plasticizing cavity.
Preferably, half round straight hole of power transmission set and the piston hole of piston guide disk are corresponding, half round straight hole and piston
Hole is connected, and pushing piston successively protrudes into piston hole, in half round straight hole；Feeding-passage, feeding-passage are offered above charging seat
It is connected with half round straight hole of power transmission set.
It preferably, further include feed pipe, feed pipe is installed on charging seat, and feed pipe is connected with feeding-passage.
Preferably, after swash plate seat, charging seat, barrel connection, an installation cavity, the piston after installation are formed between three
Positioning disk, power transmission set are respectively positioned in installation cavity；Piston guide disk is installed on power input shaft inner end, activity-oriented disk and dynamic
Power input shaft is connected by spline；The front end of power transmission set is connected by screw with piston guide disk；Screw rod and power
Drive sleeve is connected by flat key.
A kind of high molecular material positive displacement positive feed method: piston guide disk, power is driven to pass by power input shaft
Dynamic set and screw rod synchronous rotary force pushing piston under the common constraint of piston shoes, swash plate and piston reset spring along power
Half round straight hole of drive sleeve moves reciprocatingly；When power transmission set is rotated counterclockwise from limes superiors point into limit inferior point process,
Pushing piston retreats, and the volume of half round straight hole becomes larger, and inclined hole outlet is blocked by barrel, and macromolecule material is received through feeding-passage
Enter in half round straight hole and is gradually compacted；When power transmission set rotates counterclockwise supreme limit point, pushing piston from limit inferior point
Forward, the volume of half round straight hole gradually become smaller, and inclined hole outlet is connected to barrel feeding chamber, and material is conveyed into feeding through inclined hole outlet
It is intracavitary, into plasticizing cavity in screw rod rotate and by gradually fusion plastification, squeeze out, to realize the positive displacement of high molecular material
Positive feed overall process.
Wherein, limes superiors point is the peak dot (highest point) of the feed cavity on barrel, and limit inferior point is the feed cavity on barrel
Valley point (minimum point).Preferably, pass through quantity, the pusher of the adjusting revolving speed of power input shaft, the thickness of swash plate, pushing piston
The length and diameter of piston is to adjust the inlet amount of material.
Preferably, high molecular material positive displacement positive feed device can be used as an independent feeding structure, squeeze with screw rod
The plasticizing such as machine, blade extruder, eccentric rotor extruder equipment matches and forms complete high polymer material plasticizing processing out
Equipment.
The utility model has the beneficial effects that
1, compared with existing high molecular material feeding device, high molecular material positive displacement positive feed device is from material
It brings material into and plasticizing cavity is squeezed by pushing piston pressure, realize the forced conveyance material process of complete positive displacement, feed
Process is more stable, effectively prevents material and embraces the problems such as roller skids, builds bridge, substantially increases forced conveyance ability, ensure that
The reliability and stability of material transportation process.
2, high molecular material positive displacement positive feed device can be by adjusting revolving speed, swash plate thickness, pushing piston length
With the means such as diameter, pushing piston quantity it is more convenient adjust the inlet amount of macromolecule material, and be no longer dependent on material
The factors such as form, temperature, proportion, material is more adaptable, is particularly suitable for other conventional feeds devices and is difficult to stablize charging
The blends such as long fiber reinforcement compound system, powder-pellet co-mixing system.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of high molecular material positive displacement positive feed device.
Fig. 2 is the connection schematic diagram of power transmission set, screw rod, barrel.
Fig. 3 is the structural schematic diagram of power transmission set.
Fig. 4 is the structural schematic diagram that a kind of high molecular material positive displacement positive feed is plasticized extrusion equipment.
Wherein, 1- power input shaft, 2- swash plate, 3- swash plate seat, 4- swash plate, 5- piston shoes, 6- pushing piston, 7- piston reset
Spring, 8- piston guide disk, 9- feed pipe, 10- charging seat, 11- barrel, 12- power transmission set, 13- screw rod, 14- feed cavity,
Half round straight hole of 15- limes superiors point A, 16- limit inferior point B, 17-, the outlet of 18- inclined hole, 19- connecting tube, 20- plasticizing charging barrel, 21- modeling
Change screw rod.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawing.
As shown in Figure 1, a kind of high molecular material positive displacement positive feed device include power input shaft 1, swash plate plug 2,
Swash plate seat 3, swash plate 4, piston shoes 5, pushing piston 6, piston reset spring 7, piston guide disk 8, feed pipe 9, charging seat 10, barrel
11, power transmission covers 12, screw rod 13.Charging seat be set between swash plate seat and barrel, charging seat 10 respectively with swash plate seat 3, barrel
11 are connected by screw, and three is fixed.Power input shaft 1, piston guide disk 8, power transmission set 12 and screw rod 13 are same
It feels at ease dress, power input shaft 1 is installed on swash plate seat, and passes through swash plate；Screw rod 13 is installed on barrel and screw rod protrudes into barrel
Plasticizing cavity in；Power input shaft 1 is connected with piston guide disk 8 by spline, and screw rod 13 passes through with power transmission set 12
Flat key is connected, and piston guide disk 8 is connected with power transmission set 12 by screw.Swash plate 4 is fixed on swash plate seat 3, several
A piston shoes 5 are on the inclined-plane that power input shaft 1 is uniformly distributed in swash plate 4, and pushing piston is placed in piston guide disk, pusher
Piston outer end is connected with piston shoes, and pushing piston reset spring is set in pushing piston outer end, and piston reset spring is limited
Between piston shoes and piston guide disk, so that piston reset spring 7, piston shoes 5 and swash plate 4 constrain pushing piston 6 jointly.Power passes
Dynamic set 12 is located at the inside of charging seat, and front end is connected by screw with piston guide disk 8.
In the present embodiment, the main body of power transmission set 12 is cylindrical, is equipped with staged circular hole, rank in power transmission set
Ladder type circular hole is through entire power transmission set 12；The outer wall of main body is equipped with several equally distributed semicircles in a circumferential direction
Straight hole 17, inclined hole outlet 18 run through the side wall of main body, and half round straight hole 17 is connected with inclined hole outlet 18.On power transmission set 12
Half round straight hole 17 and swash plate outlet 18 are corresponding.The middle part of barrel 11 is equipped with plasticizing cavity, and the diameter for being plasticized cavity is greater than screw rod
13 outer diameter, plasticizing cavity reduce to form the outlet of barrel 11 in the outer end of barrel 11.The leading portion of barrel 11 is equipped with feed cavity, charging
The radian size of chamber is 180 degree, and barrel 11 and power transmission set 12 be when being coupled, and the front end barrel of barrel 11 is by the oblique of half
Hole exits 18 block, the other half inclined hole outlet 18 is connected through feed cavity with plasticizing cavity.
Power input shaft 1 drives piston guide disk 8, power transmission set 12 and 13 synchronous rotary of screw rod, and pushing piston 6 is in cunning
It is passed with the rotation of piston guide disk 8 in the piston hole of piston guide disk 8 and power under the constraint of boots 5 and piston reset spring 7
Make axially reciprocating in half round straight hole 17 of dynamic set 13；Piston guide disk 8 often rotates a circle, and the semicircle of power transmission set 13 is straight
The cavity volume in hole just completes the variation of primary ascending then descending a cycle.Fill process principle such as Fig. 2 institute
Show, power input shaft 1 drives power transmission to cover 12 rotations counterclockwise synchronous with screw rod 13, goes to down from the position limes superiors point A15
The position limit point B16, power transmission cover the ascending variation of cavity volume of 12 half round straight holes 17, the inclined hole of power transmission set 13
Outlet is blocked by 11 outer wall of barrel, is included in macromolecule material in the cavity of half round straight hole 17 and is constantly compacted, cavity volume reaches
It is fully filled with when to maximum by material；When going to the limes superiors point position A15 by the position limit inferior point B16 again, power transmission set 12
Half round straight hole 17 the descending variation of cavity volume, power transmission set 13 inclined hole outlet 18 be 11 semicircular opening position of barrel
It sets, feed cavity 15 is consequently formed；Pushing piston 6 pushes material in cavity to be axially moved and squeeze into screw rod 13 and barrel 11 from inclined hole
In the plasticizing cavity of composition, material starts to rotate with screw rod 13 by gradually fusion plastification, most squeezes afterwards through the external mouth mold of extruder
Out, cooling and shaping obtains required product, to realize stablizing charging, stablizing plasticizing, stable molding process for high molecular material.
As shown in figure 4, a kind of high molecular material positive displacement positive feed plasticizing extrusion equipment mainly includes that positive displacement is forced
Feed unit I, plasticization unit II and connecting tube 19.Positive displacement positive feed unit I is a kind of above-mentioned high molecular material normotopia
Positive feed device is moved, mainly by power input shaft 1, swash plate plug 2, swash plate seat 3, swash plate 4, piston shoes 5, pushing piston 6, piston
The compositions such as reset spring 7, piston guide disk 8, feed pipe 9, charging seat 10, barrel 11, power transmission set 12, screw rod 13.Plasticizing
Unit II is mainly made of plasticizing charging barrel 20 and plasticized screw 21.Connecting tube 19 connects positive displacement positive feed unit I and plasticizing
The charging end face of unit II two parts, connecting tube 19 is fixedly connected with the discharging end face of plasticizing supply unit I, and connecting tube 19 goes out
Material end face is fixedly connected with the charging end face of the plasticizing charging barrel 20 of plasticization unit II, so that spiral shell in positive displacement positive feed unit I
The plasticizing that plasticizing charging barrel 20 and plasticized screw 21 are constituted in the feeding cavity and plasticization unit II that bar 13 and barrel 11 are constituted
Cavity is connected.Macromolecule material carries out forced feed and premix by positive displacement positive feed unit I, then through connecting tube 19
Cavity enter in plasticization unit II, conveyed forward under the turning effort of plasticized screw 21, gradually fusion plastification and mixing are mixed
Refining, most afterwards through the external die extrusion of extruder, cooling and shaping obtains required product.
Plasticization unit II includes that the plasticizings such as screw extruder, blade extruder, eccentric rotor extruder are set in the present embodiment
It is standby, it is matched with positive displacement positive feed unit I and forms new high polymer material plasticizing extrusion equipment, to realize macromolecule material
Material stablizes charging, stablizes plasticizing, stable molding process.
Above-described embodiment is the preferable embodiment of utility model, but the embodiments of the present invention is not by above-mentioned reality
Apply the limitation of example, it is made under other any spiritual essence and principles without departing from the utility model change, modification, substitution,
Combination simplifies, and should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (6)
1. a kind of high molecular material positive displacement positive feed device, it is characterised in that: including power input shaft, swash plate, swash plate seat,
Piston shoes, pushing piston, piston reset spring, piston guide disk, power transmission set, charging seat, barrel, screw rod；Swash plate seat, charging
Seat, barrel are fixedly connected sequentially；Swash plate is installed on swash plate seat, and power input shaft is installed on swash plate seat；Power input shaft, work
Plug positioning disk, power transmission set, screw rod are set gradually, and four install with one heart；Screw free end protrudes into the plasticizing cavity of barrel；
The inclined-plane of swash plate seat is equipped with several piston shoes uniformly distributed around power input shaft, and piston shoes are connected with pushing piston outer end, and pusher is living
In plug protrudes into piston guide disk, power transmission covers, power transmission puts on the inclined hole outlet being equipped with for being connected to plasticizing cavity, in cunning
Piston reset spring is set on pushing piston outer end between boots and piston guide disk.
2. a kind of high molecular material positive displacement positive feed device according to claim 1, it is characterised in that: power transmission set
Main body it is cylindrical, power transmission set in be equipped with staged circular hole；The outer wall of main body is equipped with several in a circumferential direction
Equally distributed half round straight hole, inclined hole outlet run through the side wall of main body, the inner cavity of inclined hole outlet half round straight hole and main body.
3. a kind of high molecular material positive displacement positive feed device according to claim 1, it is characterised in that: the middle part of barrel
Equipped with plasticizing cavity, the diameter for being plasticized cavity is greater than the outer diameter of screw rod, and plasticizing cavity reduces to form barrel and go out in the outer end of barrel
Mouthful；The leading portion of barrel is equipped with feed cavity, and the radian size of feed cavity is 180 degree, when barrel and power transmission set are coupled, material
The inclined hole of half is exported and is blocked by the front end barrel of cylinder, the other half inclined hole outlet is connected through feed cavity with plasticizing cavity.
4. a kind of high molecular material positive displacement positive feed device according to claim 1, it is characterised in that: power transmission set
Half round straight hole and piston guide disk piston hole it is corresponding, half round straight hole is connected with the piston hole of piston guide disk, pusher
Piston successively protrudes into piston hole, in half round straight hole；Feeding-passage is offered above charging seat, what feeding-passage and power transmission covered
Half round straight hole is connected.
5. a kind of high molecular material positive displacement positive feed device according to claim 4, it is characterised in that: further include charging
Pipe, feed pipe are installed on charging seat, and feed pipe is connected with feeding-passage.
6. a kind of high molecular material positive displacement positive feed device according to claim 1, it is characterised in that: swash plate seat, into
After expecting seat, barrel connection, an installation cavity is formed between three, piston guide disk, power transmission set after installation are respectively positioned on
In installation cavity；Piston guide disk is installed on power input shaft inner end, and piston guide disk and power input shaft are connected by spline；
The front end of power transmission set is connected by screw with piston guide disk；Screw rod is connected with power transmission set by flat key.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821783769.5U CN209273762U (en) | 2018-10-31 | 2018-10-31 | A kind of high molecular material positive displacement positive feed device |
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| CN201821783769.5U CN209273762U (en) | 2018-10-31 | 2018-10-31 | A kind of high molecular material positive displacement positive feed device |
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| CN209273762U true CN209273762U (en) | 2019-08-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228037A (en) * | 2018-10-31 | 2019-01-18 | 华南理工大学 | A kind of high molecular material positive displacement positive feed apparatus and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228037A (en) * | 2018-10-31 | 2019-01-18 | 华南理工大学 | A kind of high molecular material positive displacement positive feed apparatus and method |
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