阅读说明：本技术 一种高粘度挤出机螺杆 (High-viscosity extruder screw ) 是由 林晓丽 林友富 蔡珉 于 2020-06-05 设计创作，主要内容包括：本发明公开了一种高粘度挤出机螺杆,包括密封部、动力结合部和加料部,所述动力结合部位于密封部的一侧位置,所述加料部位于密封部的另一侧位置,所述密封部、动力结合部和加料部的半径大小均相等,所述加料部的一端外表面远离密封部的一端一体成型有受压挤出部,所述密封部的外表面均匀的分布有密封螺纹片,所述加料部的外表面一体成型有一号螺纹片,所述受压挤出部的外表面一体成型有二号螺纹片,所述动力结合部的外表面开设有多个键槽,所述键槽对称分布在动力结合部的外表面。本发明所述的一种高粘度挤出机螺杆,能够防止螺纹杆出现脱落,且能够在螺纹杆活动的时候起到定位的作用。(The invention discloses a high-viscosity extruder screw, which comprises a sealing part, a power combining part and a feeding part, wherein the power combining part is positioned at one side of the sealing part, the feeding part is positioned at the other side of the sealing part, the radii of the sealing part, the power combining part and the feeding part are all equal, a pressure extrusion part is integrally formed at one end of the outer surface of one end of the feeding part, which is far away from the sealing part, sealing thread pieces are uniformly distributed on the outer surface of the sealing part, a first thread piece is integrally formed on the outer surface of the feeding part, a second thread piece is integrally formed on the outer surface of the pressure extrusion part, a plurality of key grooves are formed on the outer surface of the power combining part, and the key grooves are symmetrically distributed on the outer surface of the power combining part. The high-viscosity extruder screw rod provided by the invention can prevent the screw rod from falling off and can play a positioning role when the screw rod moves.)

1. A high viscosity extruder screw, characterized in that: the sealing device comprises a sealing part (1), a power combining part (2) and a feeding part (3), wherein the power combining part (2) is located on one side of the sealing part (1), the feeding part (3) is located on the other side of the sealing part (1), the radius sizes of the sealing part (1), the power combining part (2) and the feeding part (3) are equal, one end of the outer surface of one end of the feeding part (3), which is far away from the sealing part (1), is integrally formed with a pressure extrusion part (4), sealing thread sheets (5) are uniformly distributed on the outer surface of the sealing part (1), one end of the outer surface of the feeding part (3) is integrally formed with one number of thread sheets (6), one end of the outer surface of the pressure extrusion part (4) is integrally formed with two number of thread sheets (7), a plurality of key grooves (8) are formed on the outer surface of the power combining part (2), and the key grooves (8) are symmetrically distributed on the outer surface of the power combining part (, the end position of power combination portion (2) is connected with stop device (9), stop device (9) comprise limit stop (901), mounting groove (902) and rubber packing ring (903), the end position of portion (4) is extruded in the pressurized is connected with elastic positioning device (10), elastic positioning device (10) comprise locating pin (1001), anticreep piece (1002) and expanding spring (1003).

2. A high viscosity extruder screw as defined in claim 1, wherein: the limiting stopper (901) is fixedly arranged at the end position of the power combining part (2), the mounting groove (902) is formed in the position, close to the inner side, of the outer surface of the limiting stopper (901), and the rubber gasket (903) is embedded in the mounting groove (902).

3. A high viscosity extruder screw as defined in claim 1, wherein: the inner surface of the mounting groove (902) is provided with a step groove, and the inner surface of the mounting groove (902) is tangent to the outer surface of the rubber gasket (903).

4. A high viscosity extruder screw as defined in claim 1, wherein: the one end of locating pin (1001) is embedded into the inside that the pressurized portion of extruding (4), anticreep piece (1002) fixed mounting is in the end position of locating pin (1001), the inside of the pressurized portion of extruding (4) is seted up with anticreep piece (1002) assorted fixed notch, the one end of expanding spring (1003) is fixed in the surface of anticreep piece (1002), and the other end of expanding spring (1003) is fixed in the inner wall that the pressurized portion of extruding (4).

5. A high viscosity extruder screw as defined in claim 1, wherein: the positioning pin (1001) is movably connected with the pressed extrusion part (4) through an anti-falling block (1002) and a telescopic spring (1003).

Technical Field

The invention relates to the field of extruders, in particular to a high-viscosity extruder screw.

Background

The extruder belongs to one of the types of plastic machinery, the extruder can divide a 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 a screw rod, the screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by the rotation of the screw rod, the plastic extruder can be basically classified into a double-screw extruder, a single-screw extruder, a rare multi-screw extruder and a non-screw extruder through a die, and a screw rod of the high-viscosity extruder is a high-viscosity screw rod for the extruder; when the screw rod of the existing high-viscosity extruder is used, the screw rod does not have a limiting effect when moving, and the transmission accuracy of the screw rod is not high.

Disclosure of Invention

The invention mainly aims to provide a high-viscosity extruder screw rod, which can effectively solve the problems that a threaded rod in the background technology has no limiting function when moving and the accuracy of threaded rod transmission is not high.

In order to achieve the purpose, the invention adopts the technical scheme that:

a high-viscosity extruder screw comprises a sealing part, a power combining part and a feeding part, wherein the power combining part is positioned at one side of the sealing part, the feeding part is positioned at the other side of the sealing part, the radius sizes of the sealing part, the power combining part and the feeding part are equal, a pressure extrusion part is integrally formed at one end, away from the sealing part, of the outer surface of one end of the feeding part, a plurality of key grooves are formed in the outer surface of the power combining part, sealing thread sheets are uniformly distributed on the outer surface of the sealing part, a first thread sheet is integrally formed on the outer surface of the feeding part, a second thread sheet is integrally formed on the outer surface of the pressure extrusion part, the key grooves are symmetrically distributed on the outer surface of the power combining part, a limiting device is connected to the end position of the power combining part, and the limiting device consists of a limiting stop, a mounting groove and a rubber gasket, the end position of the pressed extrusion part is connected with an elastic positioning device, and the elastic positioning device consists of a positioning pin, an anti-falling block and a telescopic spring.

Preferably, the limit stop is fixedly installed at the end position of the power combining part, the installation groove is formed in the position, close to the inner side, of the outer surface of the limit stop, and the rubber gasket is embedded in the installation groove.

Preferably, the inner surface of the mounting groove is provided with a step groove, and the inner surface of the mounting groove is tangent to the outer surface of the rubber gasket.

Preferably, the one end embedding of locating pin is to the inside of pressurized extrusion portion, anticreep piece fixed mounting is in the end position of locating pin, the inside of pressurized extrusion portion seted up with anticreep piece assorted fixed notch, expanding spring's one end is fixed in the surface of anticreep piece, and expanding spring's the other end is fixed in the inner wall of pressurized extrusion portion.

Preferably, the positioning pin is movably connected with the pressure extrusion part through an anti-dropping block and a telescopic spring.

Compared with the prior art, the invention has the following beneficial effects: this high viscosity extruder screw rod through the stop device who sets up, can play spacing effect to the threaded rod when moving about to can prevent that the threaded rod from coming off, through the elastic positioning device who sets up, can play the effect of location when the threaded rod moves about, thereby can improve the driven accuracy of threaded rod.

Drawings

FIG. 1 is a schematic view of the overall structure of a screw of a high viscosity extruder according to the present invention;

FIG. 2 is a schematic structural view of a limiting device of a screw of a high viscosity extruder according to the present invention;

FIG. 3 is a schematic structural view of an elastic positioning device for a screw of a high viscosity extruder according to the present invention.

In the figure: 1. a sealing part; 2. a power coupling portion; 3. a feeding part; 4. a pressure-receiving extrusion section; 5. sealing the thread sheet; 6. a first thread piece; 7. a second thread piece; 8. a keyway; 9. a limiting device; 901. a limit stop block; 902. mounting grooves; 903. a rubber gasket; 10. an elastic positioning device; 1001. positioning pins; 1002. an anti-drop block; 1003. a telescoping spring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, a high viscosity extruder screw rod comprises a sealing part 1, a power combining part 2 and a feeding part 3, wherein the power combining part 2 is located at one side of the sealing part 1, the feeding part 3 is located at the other side of the sealing part 1, the radii of the sealing part 1, the power combining part 2 and the feeding part 3 are equal, one end of the outer surface of one end of the feeding part 3, which is far away from the sealing part 1, is integrally formed with a pressure extrusion part 4, sealing thread pieces 5 are uniformly distributed on the outer surface of the sealing part 1, one thread piece 6 is integrally formed on the outer surface of the feeding part 3, two thread pieces 7 are integrally formed on the outer surface of the pressure extrusion part 4, a plurality of key grooves 8 are formed on the outer surface of the power combining part 2, the key grooves 8 are symmetrically distributed on the outer surface of the power combining part 2, a limiting device 9 is connected to the end position of the power combining part 2, and the limiting, The device comprises a mounting groove 902 and a rubber gasket 903, wherein the end position of the pressed extrusion part 4 is connected with an elastic positioning device 10, and the elastic positioning device 10 comprises a positioning pin 1001, an anti-falling block 1002 and a telescopic spring 1003;

the limit stop 901 is fixedly arranged at the end position of the power combining part 2, the mounting groove 902 is arranged at the position, close to the inner side, of the outer surface of the limit stop 901, and the rubber gasket 903 is embedded in the mounting groove 902; a step groove is formed in the inner surface of the mounting groove 902, and the inner surface of the mounting groove 902 is tangent to the outer surface of the rubber gasket 903; one end of a positioning pin 1001 is embedded into the pressure extrusion part 4, an anti-falling block 1002 is fixedly installed at the end position of the positioning pin 1001, a fixing notch matched with the anti-falling block 1002 is formed in the pressure extrusion part 4, one end of a telescopic spring 1003 is fixed on the outer surface of the anti-falling block 1002, and the other end of the telescopic spring 1003 is fixed on the inner wall of the pressure extrusion part 4; the positioning pin 1001 is movably connected with the pressure extrusion part 4 through a retaining block 1002 and a telescopic spring 1003.

It should be noted that, the invention is a high viscosity extruder screw, when in use, the sealing part 1, the power combining part 2, the feeding part 3 and the pressurized extruding part 4 form the main body part of the whole high viscosity extruder screw, the power combining part 2 is combined with the transmission part of the extruder through the key slot 8, the transmission part of the extruder provides power for the rotation of the threaded rod, the sealing part 1, the power combining part 2, the feeding part 3 and the sealing threaded sheet 5, the first threaded sheet 6 and the second threaded sheet 7 on the surface of the pressurized extruding part 4 are respectively meshed with the corresponding parts of the extruder, the limit stopper 901 can play a role of limiting when the threaded rod moves, thereby preventing the threaded rod from falling off, the rubber gasket 903 plays a certain role of buffering, the positioning pin 1001 moves relative to the pressurized extruding part 4 through the anti-falling block 1002 and the telescopic spring 1003, and can play a role of positioning when the threaded rod moves, thereby can improve the accuracy of threaded rod transmission.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.