CN215550753U

CN215550753U - End face positioning structure of integral sleeve of double-screw extruder

Info

Publication number: CN215550753U
Application number: CN202121886266.2U
Authority: CN
Inventors: 宫元正; 姜明智; 陈正
Original assignee: Nanjing Zhitian Mechanical And Electrical Co ltd
Current assignee: Nanjing Zhitian Mechanical And Electrical Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-01-18
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses an end face positioning structure of an integral sleeve of a double-screw extruder, which comprises a sleeve shell, wherein an alloy integral sleeve matched with the inner wall of the sleeve shell is arranged on the inner wall of the sleeve shell, and the sleeve shell and the alloy integral sleeve are locked at the axial position through a connecting piece at the end face; by adopting the structure, the counter bores on the alloy integral sleeve can be finished only by adopting electric spark electric shock, so that the difficulty of tapping on the alloy integral sleeve is solved; because the fixed hole does not need to be processed on the shell, the defects that the high-molecular material can leak under high pressure and cannot meet the sealing requirement are overcome.

Description

End face positioning structure of integral sleeve of double-screw extruder

Technical Field

The utility model relates to an axial positioning structure, in particular to an end face positioning structure of an integral sleeve of a double-screw extruder.

Background

At present, the fixing between the alloy integral sleeve and the shell of the integral sleeve barrel at home and abroad generally adopts the mode of integral sleeve tapping, bolt clearance hole processing on the shell and bolt fixing.

The original design needs to process threads on the alloy integral sleeve, and the alloy integral sleeve is high in material hardness and high in processing difficulty; in the actual production application of whole cover barrel, after the material liquefaction of production, the material can follow the red line footpath and extrude from fixing bolt, can't satisfy sealed requirement when producing macromolecular material and needing high pressure.

SUMMERY OF THE UTILITY MODEL

The utility model provides an end face positioning structure of a double-screw extruder integral sleeve, which is used for overcoming the defects of axial movement and shell sealing performance between an alloy integral sleeve and a shell of the double-screw extruder integral sleeve in the prior art.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model discloses an end face positioning structure of an integral sleeve of a double-screw extruder, which comprises a sleeve shell, wherein an alloy integral sleeve matched with the inner wall of the sleeve shell is arranged on the inner wall of the sleeve shell, and the sleeve shell and the alloy integral sleeve are locked at the axial position through a connecting piece at the end face.

Furthermore, bolt holes are formed in the end faces of two ends of the sleeve shell.

Furthermore, the end faces of the two ends of the alloy integral sleeve are provided with counter bores for bearing the connecting piece.

Further, the counter bore is the same as the thickness of the connecting piece screw cap.

Furthermore, the counter bores and the bolt holes are in the same axis.

The utility model has the following beneficial effects: by adopting the structure, the counter bores on the alloy integral sleeve can be finished only by adopting electric spark electric shock, so that the difficulty of tapping on the alloy integral sleeve is solved; because the fixed hole does not need to be processed on the shell, the defects that the high-molecular material can leak under high pressure and cannot meet the sealing requirement are overcome.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken along line E of FIG. 1 in accordance with the present invention;

fig. 3 is an enlarged view of the utility model at F in fig. 1.

In the figure: 1. a sleeve housing; 2. an alloy integral sleeve; 3. a counter bore; 4. a connecting member.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example 1

As shown in fig. 1-3, an end face positioning structure of a double-screw extruder integral sleeve comprises a sleeve shell 1, wherein an alloy integral sleeve 2 matched with the inner wall of the sleeve shell 1 is arranged on the inner wall of the sleeve shell 1, and the sleeve shell and the alloy integral sleeve are locked in an axial position through a connecting piece 4 at the end face.

Bolt holes are formed in the end faces of the two ends of the sleeve shell 1.

And the end faces of the two ends of the alloy integral sleeve 2 are provided with counter bores 3 for bearing connecting pieces 4.

The counter bore 3 and the connecting piece 4 are the same in thickness.

The counter bore and the bolt hole are in the same axis.

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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The end face positioning structure of the integral sleeve of the double-screw extruder is characterized by comprising a sleeve shell, wherein an alloy integral sleeve matched with the inner wall of the sleeve shell is arranged on the inner wall of the sleeve shell, and the sleeve shell and the alloy integral sleeve are locked at the axial position through a connecting piece at the end face.

2. The end face positioning structure of the twin-screw extruder integral sleeve according to claim 1, wherein bolt holes are provided on the end faces of both ends of the sleeve housing.

3. The end face positioning structure of the integral sleeve of the double-screw extruder as claimed in claim 2, wherein the end faces of the two ends of the alloy integral sleeve are provided with counter bores for bearing connecting pieces.

4. The end face positioning structure of the twin-screw extruder integral sleeve as claimed in claim 3, wherein the counter bore is the same thickness as the connector nut.

5. The end face positioning structure of the integral sleeve of the twin-screw extruder as claimed in claim 4, wherein the counter bore and the bolt hole are coaxial.