CN212385778U

CN212385778U - Rubber granulator

Info

Publication number: CN212385778U
Application number: CN202021526564.6U
Authority: CN
Inventors: 杨剑平
Original assignee: Changzhou Xiechang Rubber And Plastic Co ltd
Current assignee: Changzhou Xiechang Rubber And Plastic Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-01-22
Anticipated expiration: 2030-07-28

Abstract

The utility model belongs to the technical field of rubber particle manufacture equipment technique and specifically relates to a rubber pelleter, overcome the problem that current pelleter easily produces the granule adhesion when cutting to the stronger rubber of viscidity, the scheme is, has the die head that is located extrusion screw rod front end, has a plurality of glue outlet holes of range on the die head, the die head front end is equipped with the eager grain device of cutting the grain to the extrusion adhesive tape, eager grain device has rotatory cutter, the surface of revolution of the linear edge of cutter is the face of cylinder, the axial lead of cutter edge of a knife cylinder surface of revolution is roughly parallel to the preceding terminal surface of die head; the front end face of the die head is provided with an arc-shaped concave cavity correspondingly attached to the cylindrical rotating surface of the cutter edge, the radius of the arc-shaped concave cavity is consistent with the rotating radius of the cutter edge, the glue outlet hole is positioned at the arc-shaped concave cavity, and the rotating cutter rolls and cuts the glue strip extruded from the glue outlet hole into rubber particles.

Description

Rubber granulator

Technical Field

The utility model belongs to the technical field of rubber particle manufacture equipment technique and specifically relates to a rubber pelleter.

Background

A rubber granulator, namely a rubber granulator is equipment for producing rubber particles, and the main process is that molten rubber is extruded by a screw, rubber materials are extruded from small holes arranged on a front-end die head by the screw and then cut into particles by a cutter arranged in front of a die head, at the moment, a cooling device is used for spraying water for cooling rubber strips at the small holes, the structure of a cutting machine is different according to the difference of used raw materials or the difference of the performance requirements of the particles, for example, the function of rubber mixing and filtering needs to be enhanced when the rubber is used in a cage, but the difference of the cutting device and the cooling device at the die head and the die head is not large, for example, the whole machine drawing of the granulator shown in the attached drawing 1, the structure drawing of the die head shown in the attached

drawings

2 and 3, the structure drawing of the cutter discs shown in the attached drawings 4 and 5, the outer end surface of the die head is a plane, rubber outlet holes on the die head, the rotary surface of the cutter edge on the cutter head is a plane attached to the end surface of the die head, and the shape of the glue outlet on the die head is determined by the shape required by the particles.

With the progress of the technology, rubber particles are required to be higher and higher in performance, natural rubber and/or rubber particles with excellent performance after being added with certain substances show stronger and stronger viscosity, and in this case, the rubber particles of the existing granulator are easy to be adhered after being cut, and the main reason is that: firstly, the particles do irregular motion after being cut off, the probability of mutual collision is higher, the particles are adhered together once being collided due to strong viscosity of the particles, and if the efficiency needs to be improved, the condition that the particles are adhered to each other is more serious when a cutter head rotates at a high speed; secondly, a water spray cooling device arranged at the die head is poor in cooling pertinence, and enables the particles to move irregularly so as to generate adhesion.

The adhered rubber particles affect the use performance of the particles and the quality of products.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the defects in the prior art, the rubber granulator with the rubber particles which are not easy to adhere after being cut is provided.

The utility model provides a technical scheme that its technical problem adopted is: a rubber granulator is provided with a die head positioned at the front end of an extrusion screw, wherein a plurality of glue outlet holes are arranged on the die head, a granulating device for granulating an extrusion rubber strip is arranged at the front end of the die head according to the movement direction of a glue material, the granulating device is provided with a rotary cutter, the rotating surface of a linear cutter edge of the cutter is a cylindrical surface, and the axial lead of the cylindrical rotating surface of the cutter edge is approximately parallel to the front end surface of the die head; the front end face of the die head is provided with an arc-shaped concave cavity correspondingly attached to the cylindrical rotating surface of the cutter edge, the radius of the arc-shaped concave cavity is consistent with the rotating radius of the cutter edge, the glue outlet hole is positioned at the arc-shaped concave cavity, and the rotating cutter rolls and cuts the glue strip extruded from the glue outlet hole into rubber particles.

In order to improve the refrigerated cooling effect to rubber granule of pelleter, make and be made the regular parabola trajectory motion by the back granule of being cut, do not take place the adhesion between granule and the granule, cut grain device and have the knife rest of fixed cutter, the cutter installation department of knife rest is the columniform barrel for the profile of interior logical coolant liquid, and the cutter is located the outer wall of barrel, set up a plurality of hydrojet holes that are used for spouting the coolant liquid towards the cutter edge of a knife on the barrel.

The liquid spraying holes face to the knife edge, the central line of the liquid spraying holes does not need to intersect with the knife edge, and only the sprayed cooling liquid needs to be sprayed to the position near the knife edge.

Specifically, in order to improve the granulating effect and the balance of the rotating part, the cutters are at least two arranged on the outer wall of the cylinder body in equal parts of the circumference.

In order to be suitable for replacing the worn cutting knife, the cutting knife is detachably fixed on the knife rest and is provided with an installation part and a knife edge part, and the cross section of the cutting knife is L-shaped.

The structure is convenient to process and manufacture, the edge of the cutter is linear, and the length direction of the cutter is parallel to the axial lead of the cylindrical rotating surface of the edge of the cutter.

The utility model provides a structure that grain, eager grain device load are even in succession, the edge of a knife is the heliciform, and the cutter spiral is installed on the barrel. At this time, the linear edge of the cutter is curved.

In a specific structure, the glue outlet holes are arranged in at least one row, and the arrangement direction of the glue outlet holes is parallel to the axial lead of the cylindrical rotating surface of the knife edge of the cutter.

In order to improve the working efficiency and further reduce the probability of adhesion when the granules fall, when the glue outlet holes are two or more than two rows, the glue outlet holes between adjacent rows are in a staggered arrangement state.

In order to facilitate the manufacturing and installation of the granulating device and ensure that the granules have wider falling space in the horizontal direction, the axial lead of the cylindrical rotating surface of the cutter edge and the arrangement direction of the glue outlet holes are horizontal.

Of course, the state that the axis of the cylindrical rotating surface of the cutter edge is horizontal does not necessarily have a relationship with the arrangement direction of the glue outlet holes, the axis is arranged independently in the horizontal state, and the arrangement direction of the glue outlet holes can be in other non-horizontal states such as a wavy state or an inclined state.

In order to ensure that the cutter edge can be well kept attached to the opening of the rubber outlet hole and the cut of the particles is smooth, the rotary supporting device for supporting the cutter is fixedly arranged on the die head, and the die head is fixedly arranged on the machine body of the rubber granulator.

The utility model has the advantages that: the utility model discloses a rubber pelleter changes original conventional terminal surface plane eager grain method into the method of circumference hobbing, and the granule after cutting makes parabola form regular motion, is difficult for bumping between granule and the granule to further shift cooling device to the inside of knife rest from the outside, and the glue outlet can be aimed at to the hydrojet hole of coolant liquid accurately, can improve the better help granule of cooling effect and make regular motion, the better adhesion between preventing granule; the utility model discloses still have another beneficial effect, because the axis of hobbing device is perpendicular to screw rod axis, from each device overall arrangement of equipment, shortened the length size of equipment greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a prior art rubber pelletizer;

FIG. 2 is a front view of the die of FIG. 1;

FIG. 3 is a view A-A of FIG. 2;

FIG. 4 is a front view of the cutter head of FIG. 1;

FIG. 5 is a view from the direction B of FIG. 4;

fig. 6 is a front view of the present invention;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a front view of the die of FIG. 6;

FIG. 9 is a view C-C of FIG. 8;

FIG. 10 is a front view of the tool holder of FIG. 6;

fig. 11 is a left side view of fig. 10.

The reference numbers in the figures are: 1. the device comprises an extrusion screw, 2 parts of a die head, 2-1 parts of a glue outlet, 2-2 parts of an arc concave cavity, 3 parts of a cutter, 4 parts of a knife rest, 4-1 parts of a liquid spraying hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The rubber granulator shown in fig. 6 and 7 has a die head 2 located at the front end of an extrusion screw 1, the die head 2 is provided with a plurality of glue outlet holes 2-1 which are arranged, the front end of the die head 2 is provided with a granulating device for granulating an extrusion rubber strip according to the movement direction of a rubber material, the granulating device is provided with a rotating cutter 3, the rotating surface of a linear knife edge of the cutter 3 is a cylindrical surface, and the axial line of the cylindrical rotating surface of the knife edge of the cutter 3 is approximately parallel to the front end surface of the die head 2; the front end face of the die head 2 is provided with an arc concave cavity 2-2 correspondingly attached to the cylindrical rotating surface of the cutter edge, the radius of the arc concave cavity 2-2 is consistent with the rotating radius of the cutter edge of the cutter 3, the glue outlet 2-1 is positioned at the arc concave cavity 2-2, and the rotating cutter 3 rolls and cuts the glue strips extruded from the glue outlet 2-1 into rubber particles.

The applicant expects to explain that the main inventive point of the present application is to change the existing disc cutting or end face cutting into rolling cutting, and the rolling cutting has various forms, the movement track of the cutter edge can be on a cylindrical surface, the cylindrical surface can be a straight cylinder with the same diameter of each narrow cross section circle, and under the same rolling cutting condition, if the cutter 3 and the arc-shaped concave cavity 2-2 have no manufacturing difficulty, the cylindrical surface can not be limited to be only a straight cylinder, and the pitch line can be curved; the track of the cutter edge can also be conical, and the pitch line is also a straight line.

With reference to fig. 10 and 11, the dicing device has a cutter holder 4 for fixing the cutter 3, the cutter 3 mounting portion of the cutter holder 4 is a cylindrical barrel with a cooling liquid passing through the interior, the cutter 3 is located on the outer wall of the barrel, and the barrel is provided with a plurality of liquid spraying holes 4-1 facing the edge of the cutter 3 and used for spraying the cooling liquid; the cutters 3 are three cutters which are equally arranged on the outer wall of the cylinder body in the circumferential direction; the cutter 3 is detachably fixed on the cutter frame 4, the cutter 3 is provided with an installation part and a cutter edge part, and the cross section of the cutter 3 is L-shaped; the edge of the cutter 3 is linear, and the length direction of the cutter 3 is parallel to the axial lead of the cylindrical rotating surface of the edge of the cutter 3.

A structure which is not shown in the attached drawings is also needed to be explained, the edge of the cutter 3 is in a spiral shape, the cutter 3 is spirally arranged on the cylinder, the structure is equivalent to continuous roll cutting, and the technical requirements on the maintenance of the equipment in the later manufacturing period of the equipment and the replacement of the cutter in the use process are high.

Referring to the attached figures 8 and 9, the plurality of glue outlet holes 2-1 on the die head are arranged in two rows, the arrangement direction of the glue outlet holes 2-1 is parallel to the axial lead of the cylindrical rotating surface of the knife edge of the cutter 3, and the glue outlet holes 2-1 between the two rows are arranged in a left-right staggered mode.

Of course, the arrangement direction of the axial line of the cylindrical rotating surface of the knife edge of the cutter 3 and the glue outlet hole 2-1 is horizontal, which is a better form.

Referring to fig. 6 and 7, the rotary supporting device for supporting the cutter 3 is fixedly arranged on the die head 2, and the die head 2 is fixedly arranged on the body of the rubber granulator, so that the position of the cutter 3 relative to the die head 2 is convenient to control.

Typically, a housing is provided outside the cutter 3, a sump is provided below the housing, and the cooling fluid typically uses water, which falls with the rubber particles in the sump.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a rubber pelleter, has die head (2) that are located extrusion screw (1) front end, has a plurality of glue outlet (2-1) of range on die head (2), according to the direction of motion of sizing material, die head (2) front end is equipped with the eager grain device of cutting grain, characterized by to extruding the adhesive tape: the granulating device is provided with a rotary cutter (3), the rotary surface of the linear knife edge of the cutter (3) is a cylindrical surface, and the axial lead of the cylindrical rotary surface of the knife edge of the cutter (3) is approximately parallel to the front end surface of the die head (2); the front end face of the die head (2) is provided with an arc-shaped concave cavity (2-2) correspondingly attached to a cylindrical rotating surface of a cutter edge, the radius of the arc-shaped concave cavity (2-2) is consistent with the rotating radius of the cutter edge of the cutter (3), the glue outlet hole (2-1) is located at the arc-shaped concave cavity (2-2), and a rubber strip extruded from the glue outlet hole (2-1) is rolled and cut into rubber particles by the rotating cutter (3).

2. The rubber pelletizer of claim 1, wherein: cut grain device and have knife rest (4) of fixed cutter (3), the profile that cutter (3) installation department of knife rest (4) leads to the coolant liquid for interior is columniform barrel, and cutter (3) are located the outer wall of barrel, set up a plurality of hydrojet holes (4-1) that are used for the blowout coolant liquid towards cutter (3) edge of a knife on the barrel.

3. The rubber pelletizer of claim 2, wherein: the cutters (3) are at least two arranged on the outer wall of the cylinder body in equal parts of the circumference.

4. The rubber pelletizer of claim 2, wherein: the cutting knife (3) is detachably fixed on the knife rest (4), the cutting knife (3) is provided with an installation part and a knife opening part, and the cross section of the cutting knife (3) is L-shaped.

5. The rubber pelletizer of claim 1, wherein: the knife edge of the cutter (3) is linear, and the length direction of the cutter (3) is parallel to the axial lead of the cylindrical rotating surface of the knife edge of the cutter (3).

6. The rubber pelletizer of claim 1, wherein: the knife edge of the cutter (3) is in a spiral line shape, and the cutter (3) is spirally arranged on the cylinder body.

7. The rubber pelletizer of claim 1, wherein: the glue outlet holes (2-1) are arranged in at least one row, and the arrangement direction of the glue outlet holes (2-1) is parallel to the axial lead of the cylindrical rotating surface of the knife edge of the cutter (3).

8. The rubber pelletizer of claim 7, wherein: when the glue outlet holes (2-1) are arranged in two or more rows, the glue outlet holes (2-1) between adjacent rows are in a staggered arrangement state.

9. The rubber pelletizer of claim 7, wherein: the axial lead of the cylindrical rotating surface of the knife edge of the cutter (3) and the arrangement direction of the glue outlet holes (2-1) are horizontal.

10. The rubber pelletizer of claim 1, wherein: the rotary supporting device for supporting the cutter (3) is fixedly arranged on the die head (2), and the die head (2) is fixedly arranged on the machine body of the rubber granulator.