CN216001394U

CN216001394U - Axial limiting structure for double-screw equipment

Info

Publication number: CN216001394U
Application number: CN202120293483.4U
Authority: CN
Inventors: 杨高品
Original assignee: Suzhou Pupeishan Technology Co ltd
Current assignee: Suzhou Pupeishan Technology Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2022-03-11
Anticipated expiration: 2031-02-02

Abstract

The utility model discloses an axial limiting structure for double-screw equipment, which comprises an upper machine barrel body, a partition plate, a lower machine barrel body and double screws, wherein an upper groove body is arranged at the center of the lower end face of the upper machine barrel body, a semicircular groove body is arranged at the tail part of the upper machine barrel body, the partition plate is arranged in the semicircular groove body, a pair of semicircular holes are symmetrically arranged on the lower end face of the partition plate along the center, a lower groove body is arranged at the center of the upper end face of the lower machine barrel body, the centers of the two shafts of the upper groove body and the lower groove body are overlapped and are parallel in the axial direction, the double screws are arranged in the upper groove body and the lower groove body, an annular groove is arranged at the rear part of the double screws, and the semicircular holes are matched with the annular groove at the rear part of the double screws. The axial limiting structure of the double-screw equipment is reasonable in design, unnecessary movement of the double-screw element in the machine barrel is avoided, unnecessary damage caused by operation of the equipment is prevented, the production result and the production efficiency are influenced, and the double-screw equipment has high practical value.

Description

Axial limiting structure for double-screw equipment

The technical field is as follows:

the utility model belongs to the technical field of extruder equipment, and particularly relates to an axial limiting structure for double-screw equipment.

Background art:

in the polymer processing field nowadays, an extruder is a common polymer processing mechanical device and is widely applied to blending, modifying and extrusion molding of polymers. The extruders are classified into a single screw extruder, a twin screw extruder, a multi-screw extruder, and the like according to the number of screws thereof. The double-screw extruder is widely popularized and used by the advantages of being suitable for powder processing, suitable for thermally unstable materials, good in self-cleaning performance, strong in mixing effect and the like.

The twin screw extruder body comprises a barrel and a screw inside the barrel, wherein the screw is generally connected with a speed reducer device through a flat key or a spline, only the movement of the rotation direction of the screw is limited, the screw is fixed, but the position is not fixed in the axial direction of the screw, and the movement of the axial direction of the screw is not limited. In the operation process of the double-screw equipment, the screws can move back and forth besides normally rotating, so that the front die head part is damaged, and materials cannot be extruded normally.

The utility model has the following contents:

the utility model aims to provide an axial limiting structure for double-screw equipment, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an axial limiting structure for double-screw equipment comprises an upper machine barrel body, a partition plate, a lower machine barrel body and double screws, wherein an upper screw hole is formed in the center of the lower end face of the upper machine barrel body;

the improved screw extruder is characterized in that a semicircular groove body is formed in the tail of the upper machine barrel body, a partition plate is installed in the semicircular groove body, a pair of semicircular holes are formed in the lower end face of the partition plate along the central symmetry, a lower screw hole is formed in the center of the upper end face of the lower machine barrel body, two shafts of the upper screw hole and the lower screw hole are overlapped and parallel in the axial direction, double screws are installed in the upper screw hole and the lower screw hole, an annular groove is formed in the rear portion of each double screw, and the semicircular holes are matched with the annular groove in the rear portion of each double screw.

Preferably, the size of the outer diameter of the semicircular groove body is consistent with that of the partition plate, the depth of the semicircular groove body is consistent with the thickness of the partition plate, and the width of the annular groove is consistent with that of the partition plate.

Preferably, the central distance of the semicircular holes is consistent with that of the double screws, and the central distance of the upper screw holes and the central distance of the lower screw holes are consistent with that of the double screws.

Preferably, the upper screw hole is of a 8-shaped structure with a half-shaped upper part, and the lower screw hole is of a 8-shaped structure with a half-shaped lower part.

The utility model has the technical effects and advantages that: this axial limit structure mutually installs the cooperation through the ring channel on a pair of semicircle orifice on the baffle and the twin-screw, has restricted the direction of motion of twin-screw in the barrel, can only do the rotational motion along screw rod excircle direction, can not produce the seesaw along screw rod axial direction, avoids the twin-screw to produce unnecessary motion in the barrel to prevent to bring unnecessary when equipment function and damage, influence production result and production efficiency.

Description of the drawings:

FIG. 1 is an isometric illustration of an axial stop arrangement for a twin screw apparatus of the present invention;

FIG. 2 is another isometric illustration of an axial stop arrangement for a twin screw apparatus of the present invention;

FIG. 3 is a schematic right-side view of an axial stop arrangement for a twin-screw apparatus of the present invention;

FIG. 4 is a cross-sectional view taken at A in FIG. 3 of the present invention;

FIG. 5 is an enlarged partial schematic view of the utility model at B of FIG. 4;

in the figure, 1 is an upper cylinder body, 101 is an upper screw rod hole, 102 is a semicircular groove body, 2 is a partition plate, 201 is a semicircular hole, 3 is a lower cylinder body, 301 is a lower screw rod hole, 4 is a double screw rod, and 401 is an annular groove.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 5, the axial limiting structure for a twin-screw device of the present invention comprises an upper machine barrel body 1, a partition plate 2, a lower machine barrel body 3 and a twin-screw 4, wherein an upper screw hole 101 is formed in the center of the lower end surface of the upper machine barrel body 1; the novel cylinder is characterized in that the tail of the upper cylinder body 1 is provided with a semicircular groove body 102, a partition plate 2 is installed in the semicircular groove body 102, a pair of semicircular holes 201 are formed in the lower end face of the partition plate along the central symmetry, a lower screw rod hole 301 is formed in the central position of the upper end face of the lower cylinder body 3, the two axes of the upper screw rod hole 101 and the lower screw rod hole 301 are overlapped with each other and are parallel to the axial direction, a double screw rod 4 is installed in the upper screw rod hole 101 and the lower screw rod hole 301, an annular groove 401 is formed in the rear portion of the double screw rod 4, and the semicircular holes 201 are matched with the annular groove 401 at the rear portion of the double screw rod 4.

In this technical scheme, improve upper barrel body 1 and double screw 4 inner structure, through the semicircular groove body 102 of seting up on the upper barrel body 1, fix the position of installing baffle 2 in semicircular groove body 102, and through a pair of semicircle orifice 201 on baffle 2 and the ring channel 401 on the double screw 4, semicircle orifice 201 and ring channel 401 mutually support, the direction of motion of double screw 4 in the barrel has been restricted, only can do the rotational motion along screw rod excircle direction, can not produce fore-and-aft movement along screw rod axial direction, avoid double screw 4 to produce unnecessary motion in the barrel, in order to prevent to bring unnecessary damage when equipment operates, influence production result and production efficiency.

Further, as shown in fig. 4 and 5, the size of the outer diameter of the semicircular groove body 102 is the same as the size of the outer diameter of the partition plate 2, the depth of the semicircular groove body 102 is the same as the thickness of the partition plate 2, and the width of the annular groove 401 is the same as the thickness of the partition plate 2.

Furthermore, the central distance of the semicircular holes 201 is the same as the central distance of the twin screws 4, and the central distance of the upper screw holes 101 and the central distance of the lower screw holes 301 are the same as the central distance of the twin screws 4.

Furthermore, the upper screw hole 101 is of a 8-shaped structure with an upper half shape, and the lower screw hole 301 is of a 8-shaped structure with a lower half shape.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. An axial limiting structure for double-screw equipment comprises an upper machine barrel body (1), a partition plate (2), a lower machine barrel body (3) and double screws (4), wherein an upper screw hole (101) is formed in the center of the lower end face of the upper machine barrel body (1);

the novel cylinder is characterized in that a semicircular groove body (102) is formed in the tail of the upper cylinder body (1), a partition plate (2) is installed in the semicircular groove body (102), a pair of semicircular holes (201) are formed in the lower end face of the partition plate along the central symmetry, a lower screw hole (301) is formed in the center of the upper end face of the lower cylinder body (3), the two axle centers of the upper screw hole (101) and the lower screw hole (301) are overlapped and parallel in the axial direction, a double screw (4) is installed in the upper screw hole (101) and the lower screw hole (301), an annular groove (401) is formed in the rear portion of the double screw (4), and the semicircular holes (201) are matched with the annular groove (401) in the rear portion of the double screw (4).

2. The axial limiting structure for the double-screw equipment is characterized in that the size of the outer diameter of the semicircular groove body (102) is consistent with that of the outer diameter of the partition plate (2), the depth of the semicircular groove body (102) is consistent with that of the thickness of the partition plate (2), and the width of the annular groove (401) is consistent with that of the thickness of the partition plate (2).

3. The axial limit structure for the double-screw equipment is characterized in that the central distance of the semicircular holes (201) is consistent with that of the double screws (4), and the central distance of the upper screw holes (101) and the central distance of the lower screw holes (301) are consistent with that of the double screws (4).

4. The axial limiting structure for the double-screw equipment is characterized in that the upper screw hole (101) is of an 8-shaped structure with an upper half shape, and the lower screw hole (301) is of an 8-shaped structure with a lower half shape.