CN86205472U

CN86205472U - Multi-screw rotary serial extruder

Info

Publication number: CN86205472U
Application number: CN 86205472
Authority: CN
Inventors: 赵国华
Original assignee: QINGTAO CHEMICAL ENGINEERING COLLEGE
Current assignee: QINGTAO CHEMICAL ENGINEERING COLLEGE
Priority date: 1986-07-28
Filing date: 1986-07-28
Publication date: 1987-12-16

Abstract

The multiple screw bodies (bodies) rotary serial extruder of the utility model is provided with two or more than two short screw rods (bodies) and the total slenderness ratio is up to the mustard, which can be used to replace a single screw rod (body) extruder with large slenderness ratio in the extruding process of rubbers and plastics. Temporarily, all the bodies are distributed in parallel longitudinally, and every two bodies are connected end to end and serially connected inflectionally through a communicated path. After materials enter a feed inlet, materials are consecutively driven by all the screw rods, and perform the preset process after the inflection of 180 DEG once or a plurality of times. The utility model, which has the advantages of easy fabrication, long service life and high capability, avoids the difficulties and impossibility of the process of long components.

Description

Multi-screw rotary serial extruder

What the utility model was related is the problem of rubber and plastics extrusion molding machinery new construction.

Extrusion molding processing is one of principal mode of rubber-plastics material shaping processing.Most widely used in the used various extrusion machinery with single screw extrusion machine.But this extruder mainly is the restriction of working ability owing to being subjected to, and can not increase its screw slenderness ratio arbitrarily to satisfy the processing request of some material.In addition, although some big L/D ratio screw extruder can be created by some big factory, also because processing difficulties, the cycle is long, and output is little and quantitatively do not satisfy the demand of growing product of rubber and plastic processing industry.At last, for numerous little factories, producing the big L/D ratio extruder then is a forbidden zone.

For above-mentioned existing problems, in the existing documents and materials at home and abroad, the approach of properly settling was not proposed all.

The purpose of design of new construction, just being provides a practicable solution for the problems referred to above.

The design's feature is:

1, give under the prerequisite of fixed screw slenderness ratio satisfying, to use the multi-screw extruder that is connected into by two or two above short screws (fuselage) to replace single screw rod (fuselage) extruder;

2, lack fuselage parallel longitudinal Boulez, and make fuselage end to end in twos, inflection be together in series (referring to accompanying drawing) by means of " communication channel ";

3, the common ends of each screw rod is joined with the corresponding drive spare (gear, sprocket wheel or belt pulley) that is contained in the transmission case respectively by connector.The latter is driven by a driving wheel spare that joins with decelerator.This driving wheel or take turns part by above-mentioned certain of taking turns in the part and serve as (this moment this take turns take turns part direct or indirect interaction relation takes place) with other, or establish in addition separately;

4, under the situation of above-mentioned machine run, after material is admitted to spout, under the promotion in succession of each screw rod, will be through 180 ° of inflection of one or many, the total length that so is together in series of passing by is the fuselage that gives measured length, finishes whole extrusion.

This structure is compared with existing single screw extrusion machine structure, has following advantage:

1, can fully satisfy material and extrude the requirement of processing technology fuselage length;

2, having avoided the processing difficulties and the impossibility of long pole and slotted hole spare fully, is that big factory or little factory all can produce some the big L/D ratio extruder that oneself can not produce originally no matter make;

3, can improve screw speed significantly, thereby improve the productivity ratio of machine;

4, because the reducing of the torsional shearing stress at screw rod critical section place, so can prolong the service life of screw rod, can reduce requirement to screw strength, available low-intensity and inexpensive replacement high strength and the screw rod material of high price also can be selected the screw rod of different materials according to the difference of each fuselage condition of work for use.

5, short screw much smaller than long bolt, thereby can reduce requirement to screw rod machining accuracy and installation accuracy to the possibility of machine barrel scraped finish, can also prolong the service life of machine;

6, there is not the long bolt inherent instability.

The design of implementing this design is as follows:

Accompanying drawing is depicted as a sketch of extruding three screw rod inflection tandem extruders of usefulness for rubber cold-feed.This machine is made up of level fuselage 9,10,11 and gear-box 12 arranged side by side.Idler gear 2 in the case joins with decelerator, its both direct drive screw 5, and the gear 1 and 3 with both sides meshes and drive

screw

4 and 6 again.By means of communication channel 13 and 14, fuselage is end to end in twos, and inflection is together in series.Sizing material after spout 8 enters fuselage 9, under the promotion in succession of

screw rod

4,5,6, through twice 180 ° inflection and arrive head 7, thereby finished sizing material from carrying, plastify the overall process of extruding.

Claims

1, multiscrew inflection tandem extruder, it comprises screw rod (fuselage), it is characterized in that screw rod (fuselage) is two or two the above short screws (fuselage) that inflection is together in series.

2, extruder according to claim 1 is characterized in that these fuselage parallel longitudinal Boulezs, and makes fuselage end to end in twos by means of " communication channel ", and inflection is together in series, and the fuselage axis can be parallel to ground, also can be perpendicular to ground.

3, extruder according to claim 1, it is characterized in that the drive spare (gear, sprocket wheel or belt pulley) that each screw rod is contained in by the concentrated area in the transmission case of same end drives, the driving wheel that joins with decelerator can be taken turns in the part certain by these and be served as (this moment this wheel and other take turns part direct or indirect interaction relation takes place), also can establish in addition separately.