CN209350669U - A kind of flexible pelletizing component of Rubber Extruder - Google Patents

Abstract

The utility model discloses a kind of flexible pelletizing components of Rubber Extruder, it include: mouth mold and grain-cutter drive shaft, the grain-cutter drive shaft is arranged in front of the front of mouth mold, the grain-cutter driving shaft end is provided with cutterhead, indent is provided with several blind holes in the cutterhead outer circle, elastomer is respectively arranged in the blind hole, the elastomer end is provided with the knife bar extended on the outside of blind hole, the grain-cutter for being tiltedly directed toward mouth mold is provided on the knife bar, mouth mold front indent is provided with annular groove, the knife bar end is respectively arranged with the roller bearing extended in annular groove, annular groove external annulus face includes different the first arc surface and the second arc surface of radius, third arcwall face is provided between first arcwall face and the second arcwall face to be seamlessly transitted.By the above-mentioned means, the flexible pelletizing component of Rubber Extruder described in the utility model, blade, which is no longer concentrated, a little carries out pelletizing, reduces frequency of maintenance and adhesion problems.

Description

A kind of flexible pelletizing component of Rubber Extruder

Technical field

The utility model relates to rubber granule production technical fields, more particularly to a kind of flexible pelletizing group of Rubber Extruder Part.

Background technique

In rubber granule production process, needs that pelletizing component is installed in extrusion machine head, strip is squeezed by pelletizing component Rubber out is cut into the identical particle of length.

During grain-cutter rotates, constantly rubber is cut and is worn, formed notch at blade, affect and cut Grain effect, needs to be regularly maintained.In addition, temperature when rubber granule squeezes out is higher, blade is heated when being contacted with grain-cutter, Due to the position of blade and rubber contact be it is certain, cause the temperature of contact point high and be easy adhesion, need to improve.

Utility model content

For the utility model mainly solving the technical problems that providing a kind of flexible pelletizing component of Rubber Extruder, promotion is resistance to With property, frequency of maintenance and adhesion problems are reduced.

In order to solve the above technical problems, the technical solution that the utility model uses is: providing a kind of Rubber Extruder Flexible pelletizing component, comprising: mouth mold and grain-cutter drive shaft, the grain-cutter drive shaft are arranged in front of the front of mouth mold, The grain-cutter driving shaft end is provided with cutterhead, and indent is provided with several blind holes in the cutterhead outer circle, divides in the blind hole It is not provided with elastomer, the elastomer end is provided with the knife bar extended on the outside of blind hole, oblique finger is provided on the knife bar To the grain-cutter of mouth mold, mouth mold front indent is provided with annular groove, and the knife bar end, which is respectively arranged with, extends to annular Roller bearing in slot, annular groove external annulus face include different the first arcwall faces and the second arcwall face of radius, first arc Third arcwall face is provided between shape face and the second arcwall face to be seamlessly transitted.

In one preferred embodiment of the utility model, the mold core concentric with grain-cutter drive shaft is provided in the mouth mold Disk is provided with a few extrusion cavities on the mold core disk, and the grain-cutter end extends to mold core panel surface.

In one preferred embodiment of the utility model, the elastomer is spring.

In one preferred embodiment of the utility model, the blind hole is square hole, and the knife bar is square-section bar.

In one preferred embodiment of the utility model, the knife bar end is provided with bearing corresponding with roller bearing.

In one preferred embodiment of the utility model, the radius of first arcwall face is greater than the half of the second arcwall face Diameter.

In one preferred embodiment of the utility model, the angle of the grain-cutter and mold core disk is 30 ~ 60 °.

In one preferred embodiment of the utility model, the end of the grain-cutter is provided with blade.

In one preferred embodiment of the utility model, the blade single side carries out the polishing no more than 15 °.

In one preferred embodiment of the utility model, blade inner end angle is 70 ~ 85 °.

The beneficial effects of the utility model are: a kind of flexible pelletizing component for Rubber Extruder that the utility model is pointed out, Mouth mold is mounted on the end of extruder, and grain-cutter drive shaft is driven by external motor, and rotational speed regulation is flexible, cutterhead rotation During turning, the outer ring wall surface holding of elastomeric support roller bearing and annular groove is in rolling contact, due to the first arcwall face, the second arc Shape face is different with the radius of third arcwall face, so that knife bar carries out telescopic variation in cutterhead rotary course, changes blade and squeezes The corresponding relationship to portal so that blade no longer concentrate a little carry out pelletizing, even wearing and increase durability, reduce maintenance Frequency, and the problem of avoid blade hot-spot, the adhesion with rubber granule is reduced, the quality of rubber granule is promoted.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings, in which:

Fig. 1 is a kind of structural schematic diagram of flexible one preferred embodiment of pelletizing component of Rubber Extruder of the utility model；

Fig. 2 is the left view of mouth mold in Fig. 1.

Specific embodiment

Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described Embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the implementation in the utility model Example, all other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Fig. 1 ~ Fig. 2 is please referred to, the utility model embodiment includes:

A kind of flexible pelletizing component of Rubber Extruder, comprising: mouth mold 8 and grain-cutter drive shaft 1, the grain-cutter driving Axis 1 is arranged in front of the front of mouth mold 8, and 1 end of grain-cutter drive shaft is provided with cutterhead 2, indent in 2 outer circle of cutterhead 3 blind holes are provided with, elastomer is respectively arranged in the blind hole, the elastomer end, which is provided with, to be extended on the outside of blind hole Knife bar 7, the elastomer are spring, keep supporting the axial elasticity of knife bar 7, and the blind hole is square hole, and the knife bar 7 is side Tee section bar, avoids torsion of the knife bar 7 in blind hole, and stability is high.

It is provided with the mold core disk 5 concentric with grain-cutter drive shaft 1 in the mouth mold 8, is provided with 2 circles on the mold core disk 5 Extrusion cavities 4, mouth mold 8 are mounted on the end of extruder, and the rubber strip of high temperature is constantly squeezed out by extrusion cavities 4.

The grain-cutter 3 for being tiltedly directed toward mouth mold 8 is provided on the knife bar 7,3 end of grain-cutter extends to 5 table of mold core disk Face, the end of the grain-cutter are provided with blade 14, the pelletizing of rubber strip are constantly carried out when blade 14 rotates.The mouth mold 8 is just Face indent is provided with annular groove 12, and 12 bottom surface of annular groove is provided with mounting hole 13, using bolt pass through mounting hole 13 be fixed on it is crowded The end of machine out, 12 inner ring wall surface of annular groove are tapered surface 15, and rubber granule is avoided to be caught in annular groove 12.

7 end of knife bar is respectively arranged with the roller bearing 9 extended in annular groove 12,7 end of knife bar be provided with The corresponding bearing of roller bearing 9 promotes the flexibility that roller bearing 9 rotates.

The 12 external annulus face of annular groove includes different the first arcwall face 11 and the second arcwall face 6 of radius, and described first It is provided with third arcwall face 10 between arcwall face 11 and the second arcwall face 6 to be seamlessly transitted, the half of first arcwall face 11 Diameter is greater than the radius of the second arcwall face 6, adds third arcwall face 10, roller bearing 9 is promoted to be risen in 2 rotary course of cutterhead Volt, trigger shaft 7 carry out telescopic variation, change the corresponding relationship of blade 14 and extrusion cavities 4.

During blade 14 rotates pelletizing, lateral flexibility moves back and forth, and no longer concentrates on a little being cut on blade 14 Grain, the problem of reducing hot-spot, improving radiating effect, the utilization rate of blade 14 is high, even wearing and improve durability, drop Low frequency of maintenance.

The angle of the grain-cutter and mold core disk is 30 ~ 60 °, and preferably 33 °, pelletizing effect is good, and the blade single side carries out Polishing no more than 15 °, it is ensured that sharp.The blade inner end angle a is 70 ~ 85 °, preferably 75 °, reduces viscous knife problem.

In conclusion a kind of flexible pelletizing component for Rubber Extruder that the utility model is pointed out, carried out in blade rotation Lateral flexibility moves back and forth, and improves the service life of grain-cutter 3, reduces viscous knife problem, and pelletizing effect is good.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Using equivalent structure or equivalent flow shift made by the utility model description, it is applied directly or indirectly in other phases The technical field of pass, is also included in the patent protection scope of the utility model.

Claims (10)

1. a kind of flexible pelletizing component of Rubber Extruder, comprising: mouth mold and grain-cutter drive shaft, the grain-cutter drive shaft are set Set in front of the front of mouth mold, which is characterized in that grain-cutter driving shaft end is provided with cutterhead, in the cutterhead outer circle in It is recessed to be equipped with several blind holes, elastomer is respectively arranged in the blind hole, the elastomer end, which is provided with, to be extended to outside blind hole The knife bar of side is provided with the grain-cutter for being tiltedly directed toward mouth mold on the knife bar, and mouth mold front indent is provided with annular groove, described Knife bar end is respectively arranged with the roller bearing extended in annular groove, and annular groove external annulus face includes the first different arc of radius Shape face and the second arcwall face are provided with third arcwall face between first arcwall face and the second arcwall face and are seamlessly transitted.

2. the flexible pelletizing component of Rubber Extruder according to claim 1, which is characterized in that be provided in the mouth mold The mold core disk concentric with grain-cutter drive shaft is provided with a few extrusion cavities on the mold core disk, and the grain-cutter end extends to Mold core panel surface.

3. the flexible pelletizing component of Rubber Extruder according to claim 1, which is characterized in that the elastomer is bullet Spring.

4. the flexible pelletizing component of Rubber Extruder according to claim 1, which is characterized in that the blind hole is square hole, The knife bar is square-section bar.

5. the flexible pelletizing component of Rubber Extruder according to claim 1, which is characterized in that the knife bar end setting There is bearing corresponding with roller bearing.

6. the flexible pelletizing component of Rubber Extruder according to claim 1, which is characterized in that first arcwall face Radius is greater than the radius of the second arcwall face.

7. the flexible pelletizing component of Rubber Extruder according to claim 2, which is characterized in that the grain-cutter and mold core The angle of disk is 30 ~ 60 °.

8. the flexible pelletizing component of Rubber Extruder according to claim 1, which is characterized in that the end of the grain-cutter It is provided with blade.

9. the flexible pelletizing component of Rubber Extruder according to claim 8, which is characterized in that the blade single side carries out Polishing no more than 15 °.

10. the flexible pelletizing component of Rubber Extruder according to claim 8, which is characterized in that the blade inner end folder Angle is 70 ~ 85 °.