CN214491486U

CN214491486U - Exhaust screw

Info

Publication number: CN214491486U
Application number: CN202120521049.7U
Authority: CN
Inventors: 贺乾辉; 姚周; 钟立; 贺海波
Original assignee: Zhejiang Jinteng Machinery Manufacture Co ltd
Current assignee: Zhejiang Jinteng Machinery Manufacture Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-10-26
Anticipated expiration: 2031-03-12

Abstract

The utility model provides an exhaust screw, includes the body of rod and conical head, be equipped with the recess in the body of rod axial, recess circumference inner wall is equipped with the internal thread, the conical head is connected with the threaded rod, threaded rod and female connection installation, the conical head is equipped with the isolating ring for the installation face of the body of rod, the body of rod is equipped with the holding tank for the installation face of conical head, install a sealing ring in the holding tank, a sealing ring terminal surface is equipped with annular groove, the isolating ring gets into in the holding tank and bottom face card goes into annular groove and seals up the cooperation, and this patent body of rod and conical head pass through threaded connection, can tear open and trade to be equipped with the isolating ring, the sealing ring terminal surface is equipped with annular groove, and this setting makes the sealed effect of isolating ring and sealing ring cooperation better, and the material after avoiding melting gets into threaded connection department and makes the screw thread inefficacy.

Description

Exhaust screw

Technical Field

The utility model relates to a screw rod technical field especially relates to an exhaust screw.

Background

Screws are an important part of injection molding machines. It is used for conveying, compacting, melting, stirring and pressing plastic. All this is done by rotation of the screw within the barrel. When the screw rotates, the plastic generates friction and mutual movement on the inner wall of the machine barrel, the bottom surface of the screw groove, the screw ridge propelling surface and the plastic. The forward propulsion of the plastic is the result of this combination of movements and the heat generated by the friction is also absorbed to raise the temperature of the plastic and melt it. The design of the screw will directly influence the extent of these effects.

The body of rod and the conical head of current screw rod set up as an organic whole, can not tear open and trade, and it is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of background art, the utility model provides an exhaust screw, the body of rod and the conical head that has mainly solved present screw rod set up as an organic whole, can not tear open and trade awkward problem.

The utility model adopts the technical proposal that:

the utility model provides an exhaust screw, includes the body of rod and conical head, be equipped with the recess in the body of rod axial, recess circumference inner wall is equipped with the internal thread, the conical head is connected with the threaded rod, threaded rod and female connection installation, the conical head is equipped with the isolating ring for the installation face of the body of rod, the body of rod is equipped with the holding tank for the installation face of conical head, install a sealing ring in the holding tank, a sealing ring terminal surface is equipped with the annular groove, in the isolating ring gets into the holding tank and bottom face card goes into the annular groove and seals up the cooperation.

The rod body axial inner wall is equipped with the sealing ring recess, install No. two sealing rings in the sealing ring recess.

And an elastic part is arranged between the sealing ring groove and the second sealing ring.

When the second sealing ring is arranged in the sealing ring groove, the upper half part is arranged in a protruding mode.

The elastic piece is a spring.

The rod body comprises a compression section, the compression section is provided with a main screw edge and an auxiliary screw edge, the screw pitches of the main screw edge and the auxiliary screw edge are the same, the screw turning directions are the same and the main screw edge and the auxiliary screw edge are staggered, and the head end and the tail end of the main screw edge and the tail end of the auxiliary screw edge are connected respectively to form an intercepting area.

Has the advantages that:

this patent body of rod and conical head pass through threaded connection, can tear open and trade to be equipped with the spacer ring, the sealing ring terminal surface is equipped with the annular groove, and this setting makes the spacer ring better with the sealed effect of sealing ring cooperation, and the material of avoiding melting gets into threaded connection department and makes the screw thread inefficacy.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a connection structure of a rod body and a conical head.

Fig. 3 is an enlarged view of a portion a.

FIG. 4 is a schematic view of a seal ring structure.

The body of rod 1, conical head 2, threaded rod 3, recess 4, isolating ring 5, holding tank 6, sealing ring 7, annular groove 8, sealing ring groove 9, No. two sealing rings 10, elastic component 11.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings: as shown in the figure, an exhaust screw rod, including the body of rod 1 and conical head 2, be equipped with recess 4 in the 1 axial of the body of rod, 4 circumference inner walls of recess are equipped with the internal thread, conical head 2 is connected with threaded rod 3, threaded rod 3 and internal thread connection installation, conical head 2 is equipped with spacer ring 5 for the installation face of the body of rod 1, the body of rod 1 is equipped with holding tank 6 for the installation face of conical head 2, install a sealing ring 7 in the holding tank 6, a sealing ring 7 terminal surface is equipped with annular groove 8, spacer ring 5 gets into in the holding tank 6 and bottom face card goes into annular groove 8 and carries out sealed cooperation, and this patent body of rod 1 and conical head 2 pass through threaded connection, can tear open and trade to be equipped with spacer ring 5, the material after avoiding melting gets into threaded connection department and makes the screw thread inefficacy.

A7 terminal surfaces of sealing ring are equipped with

annular groove

8, and 5 bottom end faces of entering of isolating ring are gone into in annular groove 8, make sealing effect between them compare and do not have a sealing ring 7 of annular groove 8 better.

The axial inner wall of the rod body 1 is provided with a sealing ring groove 9, and a second sealing ring 10 is installed in the sealing ring groove 9.

And an elastic piece 11 is arranged between the groove 9 of the second sealing ring 10 and the sealing ring.

When the second sealing ring 10 is arranged in the sealing ring groove 9, the upper half part is arranged in a protruding mode.

The elastic member 11 is a spring.

Elastic component 11's setting, No. two sealing rings 10 lean on in to sealing ring groove 9 when threaded rod 3 got into, wait to install and accomplish No. two sealing rings 10 and reset under elastic component 11's effect, make both fastening effects reinforcing, the leakproofness is better.

The second sealing ring 10 comprises two semicircles.

The embodiments described with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. The utility model provides an exhaust screw, includes the body of rod (1) and conical head (2), be equipped with recess (4) in the body of rod (1) axial, recess (4) circumference inner wall is equipped with the internal thread, conical head (2) are connected with threaded rod (3), threaded rod (3) and internal thread connection installation, its characterized in that: conical head (2) are equipped with spacer ring (5) for the installation face of the body of rod (1), the body of rod (1) is equipped with holding tank (6) for the installation face of conical head (2), install a sealing ring (7) in holding tank (6), a sealing ring (7) terminal surface is equipped with annular groove (8), spacer ring (5) get into in holding tank (6) and bottom face card go into annular groove (8) and seal up the cooperation.

2. The exhaust screw rod according to claim 1, characterized in that the axial inner wall of the rod body (1) is provided with a sealing ring groove (9), and a second sealing ring (10) is arranged in the sealing ring groove (9).

3. The vent screw of claim 2, wherein an elastic member (11) is arranged between the sealing ring groove (9) and the second sealing ring (10).

4. The vent screw of claim 3, wherein the upper half of the second sealing ring (10) is arranged in a protruding way when being arranged in the sealing ring groove (9).

5. A vent screw according to claim 4, wherein the resilient member (11) is a spring.