CN219055258U

CN219055258U - Screw ejector

Info

Publication number: CN219055258U
Application number: CN202223473436.1U
Authority: CN
Inventors: 陈相忠; 游耀棉; 梁炯标; 黎伟泽
Original assignee: Guangdong Cable Works Co ltd
Current assignee: Guangdong Cable Works Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-23
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a screw ejector, which belongs to the technical field of extruders, and particularly relates to a screw ejector, and comprises a switching shaft, wherein the right end of the switching shaft is provided with an inner tooth shaft, the outer parts of the switching shaft and the inner tooth shaft are jointly provided with an inner tooth sleeve, the right end of the inner tooth sleeve is provided with a gland, the inner parts of the switching shaft and the inner tooth shaft are jointly and transversely provided with an ejector rod, the right end of the ejector rod is provided with an extension bar, the right end of the outer part of the inner tooth shaft is provided with a handle, the outer part of the inner tooth shaft is provided with a first rolling bearing, the right end of the first rolling bearing is provided with a second rolling bearing, the right end of the second rolling bearing is provided with a third rolling bearing, a gasket is arranged between the second rolling bearing and the third rolling bearing, the left end of the outer part of the inner tooth shaft is provided with a shaft retainer ring, so that the lengths of the ejector can be changed randomly according to use requirements to meet different installation spaces of the screw of the extruder, and the use is more convenient.

Description

Screw ejector

Technical Field

The utility model relates to the technical field of extruders, in particular to a screw ejector.

Background

Extruders are one of the classes of plastic machinery, originating in the 18 th century. The extruder can divide the machine head into a right-angle machine head, an oblique-angle machine head and the like according to the material flow direction of the machine head and the included angle of the central line of the screw rod. The screw extruder relies on pressure and shearing force generated by screw rotation, so that materials can be fully plasticized and uniformly mixed, and the materials are molded through a die.

In the process of disassembling the extruder screw, an ejector is often needed, but the existing ejector is inconvenient to change in length according to use requirements, so that the ejector is too long to be used, the stroke of the shorter ejector is not in accordance with the requirements, and the ejector is more limited in use.

Disclosure of Invention

The utility model aims to provide a screw ejector, which solves the problems that the prior ejector proposed in the background art is inconvenient to change in length according to use requirements, so that the ejector is too long to be used, the stroke of the shorter ejector is not in accordance with requirements, and the ejector is more limited in use.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the screw ejector comprises a switching shaft, wherein an inner tooth shaft is arranged at the right end of the switching shaft, an inner tooth sleeve is arranged outside the switching shaft and the inner tooth shaft, a gland is arranged at the right end of the inner tooth sleeve, an ejector rod is transversely arranged inside the switching shaft and the inner tooth shaft, an extension rod is arranged at the right end of the ejector rod, a handle is arranged at the right end of the outer part of the inner tooth shaft, a first rolling bearing is arranged at the outer part of the inner tooth shaft, a second rolling bearing is arranged at the right end of the first rolling bearing, a third rolling bearing is arranged at the right end of the second rolling bearing, a gasket is arranged between the second rolling bearing and the third rolling bearing, and a shaft check ring is arranged at the left end of the outer part of the inner tooth shaft.

Preferably, the first rolling bearing is selected from 61912GB 276-94.

Preferably, the second rolling bearing is 51113GB 301-1995.

Preferably, the model of the third rolling bearing is 61913GB 276-94.

Preferably, the gland is fixedly connected with the right side wall of the inner tooth socket through symmetrical bolts.

Compared with the prior art, the utility model has the beneficial effects that:

when the screw rod is required to be disassembled in a narrow space, the ejector without the extension rod is installed at the tail part of the extruder through the adapter shaft, the rotating handle drives the inner tooth shaft to rotate, the ejector rod moves inwards to eject the screw rod for a certain distance, the extension rod is installed when the ejector pin stroke is used up, then the inner tooth sleeve is rotated, the inner tooth sleeve, the inner tooth shaft, the ejector rod and the extension rod assembly simultaneously withdraw backwards for a certain distance, the inner tooth shaft is continuously rotated, the ejector rod and the extension rod assembly move inwards to the joint without threads, the inner threads of the inner tooth shaft can be coupled to the outer threads of the extension rod from the outer threads of the ejector rod, the working stroke of the ejector can be prolonged, the device can be used for connecting a plurality of sections of extension rods according to requirements, the length of the ejector rod can be changed randomly according to the use requirement, different installation spaces of the screw rod of the extruder are met, and the ejector rod is more convenient to use.

Drawings

FIG. 1 is a schematic diagram of an explosive structure according to the present utility model;

fig. 2 is a schematic cross-sectional view of the present utility model.

In the figure: the device comprises a switching shaft 1, an inner tooth shaft 2, a first rolling bearing 3, a third rolling bearing 4, a second rolling bearing 5, a gasket 6, a check ring for 7 shafts, an inner tooth sleeve 8, a gland 9, a handle 10, an ejector rod 11 and an extension rod 12.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples:

referring to fig. 1-2, the present utility model provides a technical solution: the screw ejector comprises a switching shaft 1, wherein an inner tooth shaft 2 is arranged at the right end of the switching shaft 1, an inner tooth sleeve 8 is arranged outside the switching shaft 1 and the inner tooth shaft 2, a gland 9 is arranged at the right end of the inner tooth sleeve 8, an ejector rod 11 is transversely arranged inside the switching shaft 1 and the inner tooth shaft 2, an extension rod 12 is arranged at the right end of the ejector rod 11, a handle 10 is arranged at the right end outside the inner tooth shaft 2, a first rolling bearing 3 is arranged at the outer part of the inner tooth shaft 2, a second rolling bearing 5 is arranged at the right end of the first rolling bearing 3, a third rolling bearing 4 is arranged at the right end of the second rolling bearing 5, a gasket 6 is arranged between the second rolling bearing 5 and the third rolling bearing 4, and a shaft retainer ring 7 is arranged at the left end outside the inner tooth shaft 2.

The first rolling bearing 3 is selected from 61912GB 276-94.

The second rolling bearing 5 is selected from 51113GB 301-1995.

The third rolling bearing 4 is selected from the model 61913GB 276-94.

The gland 9 is fixedly connected with the right side wall of the inner tooth socket 8 through symmetrical bolts.

Working principle: when the screw rod needs to be disassembled in a narrow space, the ejector without the extension rod is arranged at the tail part of the extruder through the adapter shaft 1, the rotating handle 10 drives the inner tooth shaft 2 to rotate, the ejector rod 11 moves inwards to eject the screw rod for a certain distance, the extension rod 12 is arranged when the travel of the ejector rod 11 is used up, then the inner tooth socket 8 is rotated, the inner tooth socket 8, the inner tooth shaft 2, the ejector rod 11 and the extension rod 12 assembly simultaneously withdraw backwards for a certain distance, the inner tooth shaft 2 is continuously rotated, the ejector rod 11 and the extension rod 12 assembly move inwards to the joint without threads, and the inner threads of the inner tooth shaft 2 can be coupled to the outer threads of the extension rod from the outer threads of the ejector rod 11, so that the working travel of the ejector can be prolonged.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Screw rod ejector, including adapter shaft (1), its characterized in that, the right-hand member of adapter shaft (1) is provided with interior tooth axle (2), the outside of adapter shaft (1) and interior tooth axle (2) is provided with interior facing (8) jointly, the right-hand member of interior facing (8) is provided with gland (9), the inside of adapter shaft (1) and interior tooth axle (2) is transversely provided with ejector pin (11) jointly, the right-hand member of ejector pin (11) is provided with extension bar (12), the outside right-hand member of interior tooth axle (2) is provided with handle (10), the outside of interior tooth axle (2) is provided with first antifriction bearing (3), the right-hand member of first antifriction bearing (3) is provided with second antifriction bearing (5), the right-hand member of second antifriction bearing (5) is provided with third antifriction bearing (4), be provided with packing ring (6) in the middle of second antifriction bearing (5) and third antifriction bearing (4), the outside left end of interior tooth axle (2) is provided with handle (7).

2. The screw ejector of claim 1, wherein: the model of the first rolling bearing (3) is 61912GB 276-94.

3. The screw ejector of claim 1, wherein: the model of the second rolling bearing (5) is 51113GB 301-1995.

4. The screw ejector of claim 1, wherein: the model of the third rolling bearing (4) is 61913GB 276-94.

5. The screw ejector of claim 1, wherein: the gland (9) is fixedly connected with the right side wall of the inner tooth socket (8) through symmetrical bolts.