CN212147464U

CN212147464U - Intermeshing co-rotating twin screw thread element

Info

Publication number: CN212147464U
Application number: CN202020562282.5U
Authority: CN
Inventors: 冯建
Original assignee: Nanjing Taichuang Machinery Equipment Co ltd
Current assignee: Nanjing Taichuang Machinery Equipment Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-15
Anticipated expiration: 2030-04-16

Abstract

The utility model belongs to the technical field of threaded element, in particular to a mutual-meshing same-direction double-screw threaded element, which comprises a shell and double screws, wherein the shell is provided with a through hole matched with the double screws, the two ends of the shell are respectively provided with a first cavity and a second cavity, one end of the double screws close to the first cavity is respectively and rotatably connected with a first transmission shaft and a second transmission shaft, one end of the first transmission shaft sequentially penetrates through the inner wall of the through hole and the inner wall of the first cavity and extends inwards, the extending end of the first transmission shaft is fixedly connected with a motor, one end of the second transmission shaft penetrates through the inner wall of the through hole and is rotatably connected with the inner wall of the first cavity, and the end of the first transmission shaft positioned in the first cavity is fixedly connected with a first gear, through the arrangement of a plurality of adjusting mechanisms, the mutual-meshing of the worn threaded element can still be well, even screw clearance can still be formed, which is beneficial to prolonging the service life of the screw element.

Description

Intermeshing co-rotating twin screw thread element

Technical Field

The utility model belongs to the technical field of threaded element, especially, relate to an intermeshing's syntropy twin-screw threaded element.

Background

The screw thread elements of the existing co-rotating twin-screw extruder are a pair of thread elements with the same external diameter, thread head number and thread lead and the same geometrical shape, which are respectively sleeved on two mandrels to form a combined co-rotating twin screw, when in use, the two screws are mutually engaged and rotate in the same direction, the outline geometrical shapes of the two thread elements follow a certain design principle and are determined by the relative motion relationship and geometrical relationship of the two screws, the complete consistency of the geometrical shape and the size is generally considered as a necessary condition for the correct engagement of the two screws, and in the design of the conventional thread elements, the geometrical shapes of the mutually engaged elements are completely identical.

However, in the operation process of the existing double screw, the thread element and the processed material rub each other, and after a period of time, the thread element is worn, the width of the thread edge becomes narrow, the vertex angle of the thread edge becomes small, the gap between the screws becomes large, so that the meshing characteristic is changed, and the working performance of the double screw is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art, and provides an intermeshing co-rotating twin-screw thread element.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a through hole matched with the double screws is formed in the shell, a first cavity and a second cavity are formed in the two ends of the shell respectively, one end, close to the first cavity, of each double screw is connected with a first transmission shaft and a second transmission shaft in a rotating mode respectively, one end of each first transmission shaft penetrates through the inner wall of the through hole and the inner wall of the corresponding first cavity in sequence and extends inwards, one end, extending out of the first transmission shaft, of each second transmission shaft penetrates through the inner wall of the corresponding through hole and is connected with the inner wall of the corresponding first cavity in a rotating mode, one end, located in the corresponding first cavity, of each first transmission shaft is fixedly sleeved with a first gear, a second gear meshed with the corresponding first gear is fixedly sleeved on the corresponding second transmission shaft, and one end, far away from the corresponding first cavity, of each double screw is fixedly connected with a first rotating shaft and a second rotating shaft respectively, the one end of first pivot and second pivot runs through the inner wall of through-hole and extends to the second cavity in, the one end that first pivot and second pivot extend all rotates and has cup jointed the support cover, two the equal fixedly connected with connecting block in one side that the support cover was kept away from each other, the one end fixedly connected with slide that supports the cover is kept away from to the connecting block, be equipped with the spout that corresponds with the slide on the inner wall of second cavity.

Preferably, the twin screws are transversely disposed within the through-holes and intermesh.

Preferably, the sliding plate is fixedly connected with the inner top of the second cavity through a plurality of springs.

Preferably, the opposite sides of the two support sleeves are fixedly connected through a plurality of damping shock absorbers.

Preferably, the twin screw is rotatably connected with the first transmission shaft and the second transmission shaft through rotating shafts.

Preferably, both ends of the sliding plate are provided with grooves, a plurality of steel balls are connected in the grooves in a sliding mode, and the edges of the steel balls are in contact with the sliding grooves.

Has the advantages that:

1. the utility model discloses in, through external power supply starter motor, drive first transmission shaft through the motor and rotate, drive engaged with first gear and second gear through first transmission shaft at the pivoted in-process and rotate to it rotates to drive engaged with double screw.

2. The utility model discloses in, can produce wearing and tearing through the twin-screw under long-time meshing effect to make and produce the clearance between the twin-screw, influenced the result of use of twin-screw, can play certain elasticity extrusion effect to the slide through setting up of spring this moment, thereby can play certain elasticity extrusion effect between the twin-screw, can still can fine meshing to the twin-screw of long-time use back wearing and tearing, still can form even screw rod clearance, extension screw element life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the construction of an intermeshing co-rotating twin screw thread element;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic structural diagram at B in fig. 1.

In the figure: 1-shell, 2-double screw, 3-through hole, 4-first cavity, 5-second cavity, 6-first transmission shaft, 7-second transmission shaft, 8-motor, 9-first gear, 10-second gear, 11-first rotating shaft, 12-second rotating shaft, 13-supporting sleeve, 14-connecting block, 15-sliding plate, 16-spring, 17-damping shock absorber and 18-steel ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a co-rotating twin-screw thread element engaged with each other comprises a housing 1 and twin screws 2, the housing 1 is provided with a through hole 3 adapted to the twin screws 2, two ends of the housing 1 are respectively provided with a first cavity 4 and a second cavity 5, one end of the twin screws 2 close to the first cavity 4 is respectively rotatably connected with a first transmission shaft 6 and a second transmission shaft 7, one end of the first transmission shaft 6 sequentially penetrates through the inner wall of the through hole 3 and the inner wall of the first cavity 4 and extends inwards, one end of the first transmission shaft 6 extending is fixedly connected with a motor 8, one end of the second transmission shaft 7 penetrates through the inner wall of the through hole 3 and is rotatably connected with the inner wall of the first cavity 4, one end of the first transmission shaft 6 located in the first cavity 4 is fixedly sleeved with a first gear 9 for driving the first transmission shaft to rotate, a second gear 10 engaged with the first gear 9 is fixedly sleeved on the second transmission shaft 7, be used for driving the second transmission shaft and rotate, the one end difference fixedly connected with first pivot 11 and second pivot 12 of first cavity 4 are kept away from to twin-screw 2, the inner wall of through-hole 3 is run through and extends to 5 interior extensions of second cavity to the one end of first pivot 11 and second pivot 12, the one end that first pivot 11 and second pivot 12 extend all rotates and has cup jointed and support cover 13, two support the equal fixedly connected with connecting block 14 in one side that cover 13 kept away from each other, connecting block 14 keeps away from the one end fixedly connected with slide 15 that supports cover 13, be equipped with the spout that corresponds with slide 15 on the inner wall of second cavity 5.

In this embodiment, the twin screws 2 are transversely disposed in the through-holes 3 and are engaged with each other.

In this embodiment, the sliding plate 15 is fixedly connected to the inner top of the second cavity through a plurality of springs 16, so as to elastically support the sliding plate.

In this embodiment, the opposite sides of the two support sleeves 13 are fixedly connected through a plurality of damping shock absorbers 17, and the two support sleeves are elastically supported to a certain extent in the process of being close to each other.

In the embodiment, the twin screw 2 is rotatably connected with the first transmission shaft 6 and the second transmission shaft 7 through rotating shafts.

In this embodiment, both ends of the sliding plate 15 are provided with grooves, a plurality of steel balls 18 are slidably connected in the grooves, and edges of the steel balls 18 are in contact with the sliding grooves to reduce friction between the sliding plate and the sliding grooves.

The working principle is as follows: during the use, at first through external power supply starter motor 8, drive first transmission shaft 6 through motor 8 and rotate, drive engaged with first gear 9 and second gear 10 at the pivoted in-process through first transmission shaft 6 and rotate, thereby drive engaged with twin-screw 2 and rotate, can produce wearing and tearing under long-time meshing effect through twin-screw 2 simultaneously, thereby make and produce the clearance between the twin-screw 2, the result of use of twin-screw 2 has been influenced, can play certain elasticity extrusion effect to slide 15 through setting up of spring 16 this moment, thereby can play certain elasticity extrusion effect between the twin-screw 2, can still can fine meshing to the twin-screw 2 of wearing and tearing after using for a long time, still can form even screw rod clearance, extension screw element life.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Intermeshing co-rotating twin-screw thread element comprising a housing (1) and twin screws (2), characterized in that: the double-screw-rod-type motor is characterized in that a through hole (3) matched with a double screw rod (2) is formed in the shell (1), a first cavity (4) and a second cavity (5) are respectively formed in two ends of the shell (1), one end, close to the first cavity (4), of the double screw rod (2) is respectively and rotatably connected with a first transmission shaft (6) and a second transmission shaft (7), one end of the first transmission shaft (6) sequentially penetrates through the inner wall of the through hole (3) and the inner wall of the first cavity (4) and extends inwards, one end, extending out of the first transmission shaft (6), of the second transmission shaft (7) is fixedly connected with a motor (8), one end of the second transmission shaft (7) penetrates through the inner wall of the through hole (3) and is rotatably connected with the inner wall of the first cavity (4), a first gear (9) is fixedly sleeved at one end, located in the first cavity (4), of the first transmission shaft (6), and a second gear (10) meshed with the first gear (9) is fixedly sleeved, the one end that first cavity (4) was kept away from in twin-screw (2) is fixedly connected with first pivot (11) and second pivot (12) respectively, the inner wall that through-hole (3) were run through and extend in to second cavity (5) in the one end of first pivot (11) and second pivot (12), first pivot (11) all rotate with the one end that second pivot (12) extended and cup jointed and supported cover (13), two support the equal fixedly connected with connecting block (14) in one side that cover (13) kept away from each other, the one end fixedly connected with slide (15) that support cover (13) are kept away from in connecting block (14), be equipped with the spout that corresponds with slide (15) on the inner wall of second cavity (5).

2. An intermeshing co-rotating twin screw threaded element as claimed in claim 1, wherein: the double screws (2) are transversely arranged in the through holes (3) and are mutually meshed.

3. An intermeshing co-rotating twin screw threaded element as claimed in claim 1, wherein: the sliding plate (15) is fixedly connected with the inner top of the second cavity through a plurality of springs (16).

4. An intermeshing co-rotating twin screw threaded element as claimed in claim 1, wherein: one sides of the two opposite support sleeves (13) are fixedly connected through a plurality of damping shock absorbers (17).

5. An intermeshing co-rotating twin screw threaded element as claimed in claim 1, wherein: the double screws (2) are rotatably connected with the first transmission shaft (6) and the second transmission shaft (7) through rotating shafts.

6. An intermeshing co-rotating twin screw threaded element as claimed in claim 1, wherein: the two ends of the sliding plate (15) are provided with grooves, a plurality of steel balls (18) are connected in the grooves in a sliding mode, and the edges of the steel balls (18) are in contact with the sliding grooves.