CN114407326A

CN114407326A - Axial precise positioning device for screw of single-screw extruder

Info

Publication number: CN114407326A
Application number: CN202210151046.8A
Authority: CN
Inventors: 叶旺; 田志河; 徐洪涛; 张东宏
Original assignee: Inner Mongolia Beitong Rubber And Plastic Machinery Co ltd
Current assignee: Inner Mongolia Beitong Rubber And Plastic Machinery Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-04-29

Abstract

The invention provides an axial precise positioning device for a screw of a single-screw extruder, which belongs to the technical field of positioning of screws of extruders and comprises a reduction gearbox, a machine barrel and a screw, wherein the machine barrel and the screw are connected with the reduction gearbox, the reduction gearbox is provided with a main shaft hole, the screw is positioned in the machine barrel, the first end part of the screw can be connected into the main shaft hole in a matching manner, the machine barrel is provided with a positioning component corresponding to the second end part of the screw, and the positioning component and the main shaft hole are configured to axially position the screw so as to enable two ends of the screw to be supported and fixed in a balanced manner. The device can avoid the screw rod of overlength to make the screw rod anterior segment flagging because of reasons such as dead weight when the major diameter of extruder is great to avoid screw rod and barrel inner wall to take place the friction, with the wearing and tearing of this great reduction screw rod and barrel, effectively increase the life of extruder.

Description

Axial precise positioning device for screw of single-screw extruder

Technical Field

The invention relates to the technical field of extruder screw positioning, in particular to an axial precise positioning device for a single-screw extruder screw.

Background

The single-screw rubber extruder mainly comprises a screw, a machine barrel, a feeding section machine body, a special reduction gearbox for the extruder and the like. The radial and axial positioning of the screw are only at the tail part of the screw; when the major diameter of extruder is great, the length of screw also can be longer, and the screw can make the screw anterior segment flagging because of reasons such as dead weight, and it rubs to take place with the barrel inner wall very easily behind the flagging, and this can accelerate the wearing and tearing of screw and barrel, shortens the life of extruder.

Disclosure of Invention

In order to make up for the defects, the invention provides an axial precise positioning device for a screw of a single-screw extruder, aiming at solving the problem that the front end of the screw is drooped due to overlong screw.

The invention is realized by the following steps: the invention provides an axial precise positioning device for a screw of a single-screw extruder, which comprises a reduction gearbox, a machine barrel and a screw, wherein the machine barrel and the screw are connected to the reduction gearbox, the reduction gearbox is provided with a spindle hole, the screw is positioned in the machine barrel, the first end part of the screw can be connected into the spindle hole in a matching manner, the machine barrel is provided with a positioning component corresponding to the second end part of the screw, and the positioning component and the spindle hole are configured to axially position the screw.

In an embodiment of the present invention, the positioning assembly has a connecting ring and a positioning ring for receiving the second end portion, a plurality of ribs are connected between the connecting ring and the positioning ring, and a glue outlet is formed between each rib.

In an embodiment of the present invention, there are 3 ribs, and the ribs are uniformly distributed along the axial direction of the connecting ring and the positioning ring, respectively.

In an embodiment of the present invention, the positioning assembly has a connecting ring and at least 3 positioning portions connected to the connecting ring, and the positioning portions are uniformly distributed along an axial direction of the connecting ring.

In an embodiment of the present invention, the positioning portion is a connecting rod and a positioning wheel rotatably connected to the connecting rod, and the positioning wheel can receive the second end portion.

In one embodiment of the invention, the positioning assembly has a connecting ring and two mating connecting portions, which are symmetrically distributed along a central axis of the connecting ring.

In an embodiment of the invention, each of the two connecting portions includes an arc-shaped ring and a straight rod connected to the arc-shaped ring, and the connecting ring has a locking block capable of fixing the straight rod when the straight rod passes through the connecting ring.

The invention has the beneficial effects that: when the single-screw extruder screw axial precise positioning device is used, the first end part of the screw is arranged in a main shaft hole of a reduction gearbox in a matching mode, then the second end part of the screw is connected with the positioning component at one end of the machine barrel, so that the two ends of the long screw are supported and installed in a balanced mode, then the extruder is started, the screw can be driven to rotate in the machine barrel stably, and rubber is extruded by the screw;

the device can avoid the screw rod of overlength to make the screw rod anterior segment flagging because of reasons such as dead weight when the major diameter of extruder is great to avoid screw rod and barrel inner wall to take place the friction, with the wearing and tearing of this great reduction screw rod and barrel, effectively increase the life of extruder.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a cross-sectional view of an axial screw fine positioning device of a single screw extruder according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a positioning assembly of a screw axial precision positioning device of a single-screw extruder according to an embodiment of the present invention;

FIG. 3 is a front view of a positioning assembly of a screw axial precision positioning device of a single-screw extruder provided by an embodiment of the invention;

FIG. 4 is a schematic cross-sectional view of a positioning assembly of an axial screw precision positioning device of a single-screw extruder according to an embodiment of the present invention;

FIG. 5 is a schematic view of a positioning assembly of a screw axial precision positioning device of a single-screw extruder according to an embodiment of the present invention;

FIG. 6 is a schematic view of a positioning assembly of a screw axial precision positioning device of a single-screw extruder according to an embodiment of the present invention.

In the figure: 110-a reduction gearbox; 111-spindle hole; 120-barrel; 130-screw; 131-a first end portion; 132-a second end; 200-a positioning assembly; 210-a connecting ring; 211-ribs; 2111-glue outlet; 212-a locking block; 220-a positioning ring; 230-a positioning section; 231-a connecting rod; 232-positioning wheel; 240-a connecting portion; 241-arc-shaped ring; 242-straight rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1, the present invention provides a technical solution: a screw axial precision positioning device of a single-screw extruder comprises a reduction gearbox 110, a cylinder 120 and a screw 130 which are connected with the reduction gearbox 110, wherein the screw 130 can be arranged in different lengths for installation and use. The reduction box 110 is provided with a spindle hole 111, and the spindle hole 111 can be matched and fixed with the first end 131 of the screw 130. Specifically, the screw 130 is located in the cylinder 120 and can rotate in the cylinder 120, and the first end 131 of the screw 130 can be coupled to the spindle hole 111 and can rotate with the driving of the reduction box 110, so as to extrude the rubber. A positioning assembly 200 is disposed at the second end 132 of the barrel 120 corresponding to the screw 130, wherein the positioning assembly 200 and the spindle hole 111 are configured to axially position the screw 130, the second end 132 of the screw 130 can be stably supported by the positioning assembly 200, and the screw 130 can also rotate in the positioning assembly 200. Through the structure of the positioning assembly 200, when the long diameter of the extruder is large, the overlong screw 130 is prevented from drooping due to the self weight and other reasons, so that the inner walls of the screw 130 and the machine barrel 120 are prevented from friction, the abrasion of the screw 130 and the machine barrel 120 is greatly reduced, and the service life of the extruder is effectively prolonged.

Referring to fig. 1, 2, 3 and 4, in some embodiments, the positioning assembly 200 has a connecting ring 210 and a positioning ring 220 receiving the second end 132, wherein the positioning ring 220 not only supports the second end 132 of the screw 130, but also enables the screw 130 to rotate therein. A plurality of ribs 211 are connected between the connecting ring 210 and the positioning ring 220, a rubber outlet 2111 is formed between each rib 211, and when the extruder is in operation, rubber extruded by the screw 130 can be directly discharged from the rubber outlet 2111. Specifically, rib 211 can set up the quantity and be 3, wherein, can form 3 between 3 ribs 211 and go out gluey hole 2111 to respectively along the axial evenly distributed of coupling ring 210 and position circle 220, and then can improve the effect that rubber was extruded.

Second embodiment:

based on the positioning assembly 200 provided in the first embodiment of the present application, the second embodiment of the present application provides another positioning assembly 200. The positioning assembly 200 of the first embodiment is merely a preferred manner of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

The second embodiment of the present application will be further described with reference to the drawings and the following description.

Referring to fig. 1 and 5, the positioning assembly 200 has a connecting ring 210 and positioning portions 230 connected to the connecting ring 210, the positioning portions 230 are at least 3 and are uniformly distributed along the axial direction of the connecting ring 210, and the screw 130 can be stably supported by the cooperation of the at least 3 positioning portions 230, so that the screw 130 rotates therein. Specifically, the positioning part 230 is divided into a link 231 and a positioning wheel 232 rotatably connected to the link 231, and the positioning wheel 232 and the link 231 are connected by a bearing. It can be understood that the positioning wheel 232 can receive the second end 132, and when the screw 130 rotates, the positioning wheel 232 rotates on the connecting rod 231 along with the screw 130, so as to not only support the screw 130, but also enable the screw 130 to rotate stably.

The third embodiment:

based on the positioning assembly 200 provided in the first embodiment of the present application, a third embodiment of the present application provides another positioning assembly 200. The positioning assembly 200 of the first embodiment is merely a preferred manner of the first embodiment, and the implementation of the third embodiment does not affect the implementation of the first embodiment alone.

A third embodiment of the present application will be further described with reference to the drawings and the following description.

Referring to fig. 1 and 6, the positioning assembly 200 has a connecting ring 210 and two mating connecting portions 240, and the two connecting portions 240 are symmetrically distributed along the central axis of the connecting ring 210. Specifically, the two connecting portions 240 each include an arc-shaped ring 241 and a straight rod 242 connected to the arc-shaped ring 241, the connecting ring 210 has a locking block 212, when the straight rod 242 passes through the connecting ring 210, the locking block 212 can fix the connecting ring, when the straight rod 242 at the upper and lower positions is moved, the arc-shaped rings 241 at the upper and lower positions can be pressed against each other, a circle is formed, then the locking block 212 and the straight rod 242 are locked and fixed, and the formed circle can support the second end portion 132 of the screw 130.

Specifically, the working principle of the screw axial precision positioning device of the single-screw extruder is as follows: during the use, install the first end 131 cooperation of screw rod 130 in the main shaft hole 111 of reducing gear box 110, then connect the second end 132 of screw rod 130 and the locating component 200 of barrel 120 one end to this carries out the balanced support installation at both ends to long screw rod 130, then start the extruder, and then can drive the steady rotation of screw rod 130 in barrel 120, and then make screw rod 130 process the rubber and extrude, realize supporting the second end 132 of screw rod 130 through its locating component 200, and second end 132 can rotate on locating component 200.

It should be noted that the specific model specification of the reduction gearbox 110 needs to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.

The powering of the reduction gearbox 110 and its principles will be clear to the skilled person and will not be described in detail here.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. A single screw extruder screw axial precision positioning device includes:

a reduction gearbox (110), and a barrel (120) and a screw (130) connected to the reduction gearbox (110);

the reduction gearbox (110) is provided with a spindle hole (111);

the screw (130) is positioned in the cylinder (120), and a first end (131) of the screw (130) can be matched and connected in the spindle hole (111);

the method is characterized in that:

a positioning assembly (200) is arranged at a second end (132) of the barrel (120) corresponding to the screw (130), and the positioning assembly (200) and the spindle hole (111) are configured to axially position the screw (130).

2. The screw axial fine positioning device of the single-screw extruder according to claim 1, wherein the positioning assembly (200) is provided with a connecting ring (210) and a positioning ring (220) for receiving the second end portion (132), a plurality of ribs (211) are connected between the connecting ring (210) and the positioning ring (220), and a glue outlet (2111) is formed between each rib (211).

3. The screw axial precision positioning device of the single-screw extruder according to claim 2, wherein the number of the ribs (211) is 3, and the ribs are uniformly distributed along the axial direction of the connecting ring (210) and the positioning ring (220).

4. The screw axial precision positioning device of the single-screw extruder according to claim 1, wherein the positioning assembly (200) has a connecting ring (210) and positioning portions (230) connected to the connecting ring (210), and at least 3 positioning portions (230) are provided and are respectively and uniformly distributed along the axial direction of the connecting ring (210).

5. Screw axial precision positioning device of a single screw extruder according to claim 4, characterized in that the positioning part (230) is divided into a connecting rod (231) and a positioning wheel (232) rotatably connected to the connecting rod (231), the positioning wheel (232) being capable of receiving the second end (132).

6. A single screw extruder screw axial precision positioning device according to claim 1, characterized in that the positioning assembly (200) has a connecting ring (210) and two cooperating connecting portions (240), the two connecting portions (240) being symmetrically distributed along the central axis of the connecting ring (210).

7. A single screw extruder screw axial fine positioning device according to claim 6, characterized in that, two said connecting parts (240) each comprise an arc-shaped ring (241) and a straight rod (242) connected to said arc-shaped ring (241), said connecting ring (210) is provided with a locking block (212), when said straight rod (242) passes through said connecting ring (210), said locking block (212) can fix it.