CN2880253Y - Cutter for rubber plastic disintegrater - Google Patents

Abstract

The utility model discloses a cutter of pulverizers for rubber and plastic material. The main structure of this unit is formed by cutter frame itself. The cutter body has a waist shape hole extending along the rotating direction of the cutter body, in order to rotate the cutter body conveniently. At least two blades are arranged along the plumb line direction of the cutter body. Two-blade is preferable, one of them is a cutting blade for the first cutting process, and another one is for the second cutting process. The angle between the axial extending line of the cutting blade for the first time and axial extending line of the cutting blade for the second time is obtuse angle, which improves impact-resistant and cutting force of the cutter. The cutting edge of the second time shall not be higher than the cutting edge of the first time in radial direction. And the intersection of axial extending line of the cutting blade for the first time and axial extending line of the cutting blade for the second time applies the arc transition, in order to reduce the load impact that the unit is in cutting process, and prolong the service life.

Description

A kind of cutter of rubber and plastic pulverizer

Technical field

The utility model relates to employed cutter in a kind of rubber and plastic pulverizer.

Background technology

In the injection process of rubber or working of plastics, because injection technique and mould designing requirement generally all can leave the cast gate material more or less, these cast gate material can recycling.And the cast gate material is when recycling, generally to pulverize through the rubber and plastic pulverizer, after the dedusting could with carry out injection moulding after virgin material mixes.

When crushing rubber or plastics, sometimes to be checked through the situation of cutting edge roundness situation and cutting edge adhesion rubber or plastics, the general at present method that adopts is to check with hand rotation cutter shaft or cutter, so easy wound is set about, in order to solve this type of problem, the manufacturer that has the just side on cutter body opens a square hole, is that the hook end of square hook is inserted into and comes rotary cutter in the square hole with a cross section.There are several problems in this mode, the one, the contact point of square hook end and square hole is few, and the strength that needs when rotating is bigger, the easy base of square hook end and fractureing, the 2nd, the area of square opening is few, when the cutter body in front turned to extreme position, the square hole on the cutter in back did not also expose, second cutter of bad rotation.

The cutter of the rubber and plastic pulverizer of commonly using at present in addition generally is made of rotary pawl cutter and fixed cutting tool, wherein the structure of rotary pawl cutter is generally: offer the axis through-hole that has keyway at pawl cutter body middle part, outer ledge at the pawl cutter is provided with one or a pair of shape blade of cutting sth. askew, thereby the rotary pawl cutter is packed in the rotating shaft, and make the blade of rotary pawl cutter corresponding, thereby can cut-out and crushing rubber or plastics with fixed cutting tool.Existing shortcoming be since when using rubber or plastics gather easily between the blade and fixed cutting tool of rotary pawl cutter; make cutting load big; noise is big; the fluctuation of live load is remarkable; the rotary pawl cutter fractures easily; the easy stuck main frame of plastics causes shutdown, and reclaims the descending pulverizing of plastics and will be undertaken by the platform classification at several equipment rooms.

Summary of the invention

The purpose of this utility model is: at the deficiencies in the prior art, provide a kind of and realize safe rotation, easy to process mould the cutter that the rubber size reduction machinery is used.

In order to solve the problems of the technologies described above, technical solution adopted in the utility model is: the cutter that a kind of rubber size reduction machinery is used, constitute by cutter body, and the side on cutter body offers a mounting hole along the stretching, extension of cutter body rotation direction.Described mounting hole can along cutter body axially through whole cutter body.

In order to improve the strong shock resistance of cutter body, cutting force is bigger, the stock-removing efficiency height, and long service life reduces the machine works load fluctuation, reduces card machine phenomenon.

The utility model can also be done following improvement:

On the blade of described cutter body, be provided with at least two cutting edges along the plumb line direction of cutter body.Reasonable is to have two cutting edges, and one of them is the cutting edge first time, and another is the cutting edge second time.

Aspect the Position Design of two cutting edges, for the first time cutting edge extend axially line with the second time cutting edge the angle that extends axially between the line be the obtuse angle.The angle at obtuse angle is reasonable to be 120-170 °, can increase the impact resistance of cutter like this, and cutting force is bigger.

For when cutting, reduce the load impact of machine works, increase the service life, cutting edge upwards must not be higher than cutting edge for the first time in the footpath of cutter body for the second time.And the first time cutting edge extend axially line and for the second time the intersection that extends axially between the line of cutting edge pass through arc transition.

Offer axle core through hole at the center of described cutter body, on cutter body, be symmetrically arranged with two blades on its edge perpendicular to the end face of the central axis of axis through-hole with keyway.

In order to increase the intensity of cutter body, on cutter body, its last lower limb perpendicular to the end face of the central axis of axis through-hole is symmetrically arranged with two reinforcements.

Owing to adopted technique scheme, the mounting hole that the utility model is offered on cutter body, can be easily be that hexagonal hook end hook is lived cutter body and rotated with a cross section, and the contact point of hook end and mounting hole is many, be not easy base, also be not easy to fracture, and forward extreme position to when the cutter body in front, in the time of can not re-using the hook end, mounting hole on second cutter body exposes, can remove to hook second cutter body with the hook end easily so again and rotate, improve the security when cutter body is checked.Because the blade of the cutter that is provided adopts the multiple-cutting-edge mouth, particularly double blade design can make cutting force bigger, and stock-removing efficiency is higher, has saved energy consumption.Angle between the double blade is that obtuse angle and both intersections that extends axially line adopt arc transition, has improved the resistance to impact of whole cutter, makes cutting ratio more steady, has reduced the phenomenon of the cutter explosion that in use occurs.Cutter of the present utility model is particularly suitable for using in the low speed pulverizer of online recycling engineering plastics cast gate.

Description of drawings

Fig. 1 is the structural representation of cutter of the present invention.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 1.

The specific embodiment

Be described in further detail below in conjunction with Figure of description and specific embodiment cutter rubber and plastic pulverization machine of the present invention.

Referring to Fig. 1-Fig. 2, the cutter of shown rubber and plastic pulverization machine is made of cutter body, and the center of described cutter body offers the axle core through hole 2 with keyway 3, is used for adopting the key ways of connecting to be fixedly installed to the rotating shaft of the cutter of plastic crusher on cutter.Side on cutter body offers one and stretches and through the mounting hole 10 of whole cutter body along the cutter body rotation direction.

The cutter body that present embodiment provided is a flat board 1, and dull and stereotyped 1 front and rear panel face 10 is perpendicular to the end face of central axis, and dull and stereotyped 1 side 11 is for being parallel to the end face of central axis.

Described dull and stereotyped 1 front and rear panel face 10 middle parts one lateral edges is a circular edge 8, the opposite side edge is linear edge 8a, its two ends are symmetrically arranged two blades 5, and blade 5 combines by circular arc type blade 51 with along the extended linear pattern blade 52 of circular arc type blade 51 tangential directions.

One end of circular arc type blade 51 is connected with described circular edge 8 transition, and the other end of linear pattern blade 52 is the wedge angle 7 of whole blade 5, and the wedge angle 7 at two ends is around the central axis symmetry.The opposite side of wedge angle 7 carries out the transition to the end away from central axis of described linear edge 8a by one section curved edge 4, one section linear edge 6, one section radiused edges 9.

In order to increase the intensity of cutter body, on cutter body, linear edge 8a is provided with reinforcement 81a.

Referring to Fig. 3, on the blade 5 of cutter body, plumb line direction along cutter body is provided with two cutting edges, one of them is a cutting edge 53 first time, another is a cutting edge 54 second time, for the first time cutting edge 53 extend axially line 55 with the second time cutting edge 54 the angle α between the line 56 of extending axially be 120-170 ° obtuse angle, can increase the impact resistance of cutter like this, cutting force is bigger.

For when cutting, reduce the load impact of machine works, increase the service life, cutting edge 54 upwards should be lower than cutting edge 53 for the first time in the footpath of cutter body for the second time.And the first time cutting edge 53 extend axially line 55 and for the second time cutting edge 54 extend axially intersection between the line 56 by circular arc 57 transition.

Owing on the blade on the cutter body, increased cutting edge, make cutter when cutting, increase mechanical strength, impact capacity doubles above than general cutter, thereby has increased service life.Solve the not impact-resistant defective of existing cutter, in use caused the phenomenon of cutter explosion easily.Because the improvement of cutter makes cutting hardness more steady, when reducing impact, equally also saved energy consumption.

More than be preferred embodiment of the present invention, all changes of doing according to technical solution of the present invention when the function that is produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.

Claims (11)

1, the cutter used of a kind of rubber pulverizer is made of cutter body, it is characterized in that: the side on cutter body offers a mounting hole that stretches along the cutter body rotation direction.

2, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 1 is characterized in that: described mounting hole along cutter body axially through whole cutter body.

3, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 1 is characterized in that: on the blade of described cutter body, be provided with at least two cutting edges along the plumb line direction of cutter body.

4, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 3 is characterized in that: described cutting edge is two, and one of them is the cutting edge first time, and another is the cutting edge second time.

5, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 4 is characterized in that: described first time cutting edge extend axially line and for the second time the angle that extends axially between the line of cutting edge be the obtuse angle.

6, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 5 is characterized in that: the angle at described obtuse angle is 120-170 °.

7, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 4 is characterized in that: described second time, cutting edge upwards must not be higher than cutting edge for the first time in the footpath of cutter body.

8, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 7 is characterized in that: described second time, cutting edge upwards was lower than cutting edge for the first time in the footpath of cutter body.

9, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 5 is characterized in that: described first time cutting edge extend axially line and for the second time the intersection that extends axially between the line of cutting edge pass through arc transition.

10, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 1, it is characterized in that: offer axle core through hole at the center of described cutter body with keyway, on cutter body, be symmetrically arranged with two blades on its edge perpendicular to the end face of the central axis of axis through-hole.

11, the cutter of a kind of rubber and plastic pulverizer as claimed in claim 1 is characterized in that: on cutter body, its last lower limb perpendicular to the end face of the central axis of axis through-hole is symmetrically arranged with two reinforcements.

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