CN214214695U

CN214214695U - Screw rod for sectional type double-screw extruder

Info

Publication number: CN214214695U
Application number: CN202120087202.XU
Authority: CN
Inventors: 谢晓刚
Original assignee: Nanjing Kerte Mechanical Equipment Co ltd
Current assignee: Nanjing Kerte Mechanical Equipment Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-09-17
Anticipated expiration: 2031-01-13

Abstract

The utility model discloses a screw for a sectional type double-screw extruder, which comprises a wide screw and a narrow screw, the end part of the wide screw rod is provided with a narrow screw rod, the end part of the narrow screw rod is provided with a connecting device, the connecting device comprises a clamping device, a linkage device, a switch device, a rod groove, a first U-shaped groove and a second U-shaped groove, the end part of the wide screw rod is provided with a second U-shaped groove, the end part of the narrow screw rod is provided with a first U-shaped groove, the first U-shaped groove is internally and symmetrically provided with the clamping devices, the first U-shaped groove is internally provided with the linkage device which is matched and connected with the clamping devices, the utility model is characterized in that under the matching of the switch device, the linkage device and the clamping devices, the clamping and the separation of the wide screw and the narrow screw can be stably realized, and the damaged screw can be easily replaced, so that the utilization rate of the screw is greatly improved, and the cost for processing materials is reduced.

Description

Screw rod for sectional type double-screw extruder

Technical Field

The utility model relates to a screw rod technical field specifically is a sectional type screw rod for double screw extruder.

Background

The double-screw extruder is developed on the basis of a single-screw extruder, and has the characteristics of good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and the like, so that the double-screw extruder is widely applied to molding and processing of extruded products at present.

At present the double screw has all adopted the screw rod of a lot of sectional types, can make material thing mix more abundant, nevertheless when excessive between the screw rod of material thing sectional type, has certain pressure to the screw rod, easily makes the screw rod of excessive part damage, changes whole screw rod during the change, and is extremely low to the utilization ratio of screw rod, the cost when also having increased processing material.

To this end, we propose a screw for a segmented twin-screw extruder.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sectional type screw rod convenient to change to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a screw rod for sectional type double screw extruder, includes wide screw rod and narrow screw rod, wide screw rod tip is provided with the narrow screw rod, connecting device is installed to the narrow screw rod tip, connecting device includes latch device, aggregate unit, switching device, rod groove, first U type groove and second U type groove, second U type groove has been seted up to the wide screw rod tip, first U type groove has been seted up to the narrow screw rod tip, latch device is installed to first U type inslot portion symmetry, first U type inslot portion installs the aggregate unit of being connected with the latch device cooperation, the inside rod groove of seting up with first U type groove intercommunication of narrow screw rod, rod inslot internally mounted has the switching device who is connected with the aggregate unit.

Preferably, switching device includes fixed plate, stopper, memory spring, screens piece, tensile pole, dwang, heart type groove, joint slide bar, draws button and circular slot, the circular slot that communicates with the pole groove is seted up to narrow screw rod tip, the circular slot has tensile pole with the inside slip grafting of pole inslot, tensile pole end fixing has the drawing button, pole inslot wall is fixed with the fixed plate, the inside heart type groove of seting up of fixed plate, tensile pole surface rotation is fixed with the dwang, the rotation pole end fixing has the slip grafting at the inside joint slide bar of heart type groove, tensile pole surface fixing has the screens piece, pole inslot portion symmetry is fixed with the screens piece, screens piece end fixing has memory spring, and memory spring end and stopper fixed connection.

Preferably, the linkage device comprises a first bevel gear, a second bevel gear, a fixed block, a rotating gear, a rack, a worm and a transmission rod, the fixed block is symmetrically fixed inside the first U-shaped groove, the transmission rod is rotatably connected inside the fixed block in a penetrating manner, the rotating gear is fixedly connected to the center of the outer surface of the transmission rod in a penetrating manner, the rack meshed with the rotating gear is fixed at the tail end of the stretching rod, the worm is rotatably connected to the inner wall of the first U-shaped groove in a symmetrical manner, the second bevel gear is symmetrically fixed at the end of the transmission rod in a penetrating manner, and the first bevel gear meshed with the second bevel gear is fixedly connected to the end of the first bevel gear in a penetrating manner.

Preferably, the clamping device comprises a clamping block, a clamping groove, a sliding groove, a pull rod, a worm wheel and an expansion spring, the sliding groove is symmetrically formed in the end portion of the connecting device, the sliding block is symmetrically arranged in the sliding groove in a penetrating mode, the end portion of the clamping block is fixedly provided with the expansion spring, the clamping blocks on the two sides are elastically connected through the expansion spring, the worm wheel connected with the worm in a meshed mode is symmetrically installed on the inner wall of the first U-shaped groove in a rotating mode, the end portion of the worm wheel is connected with the pull rod in a rotating mode, the tail end of the pull rod is connected with the clamping block, and the clamping groove matched with the clamping block in a clamping mode is formed in the inner wall of the second U-shaped groove.

Preferably, pull grooves are formed in the side edges of the first bevel gear, and the tail ends of the pull rods are connected inside the pull grooves in a sliding mode.

Preferably, the clamping block is made of hard alloy materials.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a under switching device, aggregate unit and latch device's the cooperation, can stably realize the joint of broad screw and narrow screw and break away from, alright change the screw rod of damage easily to very big improvement the utilization ratio of screw rod, just reduced the cost to material processing.

Drawings

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

FIG. 2 is a second schematic view of the connecting device of the present invention;

FIG. 3 is a schematic structural view of the switch device of the present invention;

FIG. 4 is a schematic view of the linkage of the present invention;

fig. 5 is a schematic structural view of the clamping device of the present invention.

In the figure: 1. a wide screw; 2. a connecting device; 21. a clamping device; 211. a clamping block; 212. a clamping groove; 213. a chute; 214. groove drawing; 215. a pull rod; 216. a worm gear; 217. a tension spring; 22. a linkage device; 221. a first bevel gear; 222. a second bevel gear; 223. a fixed block; 224. a rotating gear; 225. a rack; 226. a worm; 227. a transmission rod; 23. a switching device; 231. a fixing plate; 232. a limiting block; 233. a memory spring; 234. a bit block; 235. a stretch rod; 236. rotating the rod; 238. a heart-shaped groove; 239. clamping the sliding rod; 2310. pulling the button; 2311. a circular groove; 24. a rod groove; 25. a first U-shaped groove; 26. a second U-shaped groove; 3. a narrow screw.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a screw for a sectional type twin-screw extruder in the drawing includes a wide screw 1 and a narrow screw 3, the narrow screw 3 is disposed at an end of the wide screw 1, a connecting device 2 is mounted at an end of the narrow screw 3, the connecting device 2 includes a clamping device 21, a linkage device 22, a switch device 23, a rod groove 24, a first U-shaped groove 25 and a second U-shaped groove 26, the second U-shaped groove 26 is disposed at an end of the wide screw 1, the first U-shaped groove 25 is disposed at an end of the narrow screw 3, the clamping devices 21 are symmetrically mounted inside the first U-shaped groove 25, the linkage device 22 connected with the clamping device 21 in a matching manner is mounted inside the first U-shaped groove 25, the rod groove 24 communicated with the first U-shaped groove 25 is disposed inside the narrow screw 3, and the switch device 23 connected with the linkage device 22 is mounted inside the rod groove 24.

When the sectional type screw rod is disassembled, the switch device 23 is pulled, the switch device 23 drives the linkage device 22 to work, and the linkage device 22 simultaneously drives the clamping devices 21 at the two ends to loosen the clamping connection on the wide screw rod 1, so that the disassembling of the wide screw rod 1 and the narrow screw rod 3 is realized, and the replacement of the sectional type screw rod is realized.

Referring to fig. 3, the switch device 23 includes a fixing plate 231, a limiting block 232, a memory spring 233, a locking block 234, a stretching rod 235, a rotating rod 236, a heart-shaped groove 238, a locking slide rod 239, a pull button 2310 and a circular groove 2311, the end part of the narrow screw rod 3 is provided with a circular groove 2311 communicated with the rod groove 24, the circular groove 2311 and the rod groove 24 are inserted with a stretching rod 235 in a sliding way, a pull button 2310 is fixed at the end of the stretching rod 235, a fixing plate 231 is fixed on the inner wall of the rod groove 24, a heart-shaped groove 238 is arranged in the fixing plate 231, a rotating rod 236 is fixed on the outer surface of the stretching rod 235 in a rotating way, a clamping slide bar 239 which is inserted in the heart-shaped groove 238 in a sliding manner is fixed at the end part of the rotating rod 236, a limiting block 232 is fixed on the outer surface of the stretching rod 235, a clamping block 234 is symmetrically fixed inside the rod groove 24, the end of the position-locking block 234 is fixed with a memory spring 233, and the end of the memory spring 233 is fixedly connected with the limiting block 232.

When the switch device 23 is opened, the pull button 2310 is pulled, the pull button 2310 drives the stretching rod 235 to stretch outwards, and the pull button 2310 is loosened, so that the clamping slide rod 239 is clamped in the concave portion of the core-shaped groove 238 under the action of the memory spring 233, the stretching rod 235 is pulled to be stably clamped, and the switch device 23 is opened.

Referring to fig. 4, the linkage device 22 includes a first bevel gear 221, a second bevel gear 222, a fixed block 223, a rotating gear 224, a rack 225, a worm 226 and a transmission rod 227, the fixed block 223 is symmetrically fixed inside the first U-shaped groove 25, the transmission rod 227 is rotatably connected inside the fixed block 223 in a penetrating manner, the rotating gear 224 is fixedly connected at the center position of the outer surface of the transmission rod 227 in a penetrating manner, the rack 225 engaged with the rotating gear 224 is fixed at the tail end of the stretching rod 235, the worm 226 is symmetrically and rotatably connected to the inner wall of the first U-shaped groove 25, the second bevel gear 222 is symmetrically fixed at the end of the transmission rod 227 in a penetrating manner, and the first bevel gear 221 engaged with the second bevel gear 222 is fixedly connected at the end of the first bevel gear 221 in a penetrating manner.

When the linkage 22 is in transmission, the stretching rod 235 pulls the rack 225 to move, so that the rotating gear 224 engaged and connected with the rack 225 rotates, the transmission rod 227 and the second bevel gear 222 rotate, the first bevel gear 221 engaged and connected with the second bevel gear 222 rotates, the worm 226 rotates, and the linkage 22 simultaneously transmits the connection of the clamping devices 21 at the two ends.

Referring to fig. 5, the clamping device 21 includes clamping blocks 211, clamping grooves 212, sliding grooves 213, a pull rod 215, a worm wheel 216 and a telescopic spring 217, the sliding grooves 213 are symmetrically formed in the end portion of the connecting device 2, the clamping blocks 211 are slidably connected inside the sliding grooves 213 in a penetrating manner, the telescopic springs 217 are fixed to the end portions of the clamping blocks 211, the clamping blocks 211 on the two sides are elastically connected through the telescopic springs 217, the worm wheel 216 meshed with the worm 226 is symmetrically installed on the inner wall of the first U-shaped groove 25 in a rotating manner, the pull rod 215 is connected to the end portion of the worm wheel 216 in a rotating manner, the tail end of the pull rod 215 is connected to the clamping blocks 211, and the clamping grooves 212 matched with the clamping blocks 211 are formed in the inner wall of the second U-shaped groove 26.

When the clamping device 21 is separated from clamping, the worm 226 rotates, the worm wheel 216 meshed and connected with the worm 226 rotates, and the worm wheel 216 drives the pull rod 215 to pull towards the direction of the worm 226 when rotating, so that the worm 226 overcomes the elastic force of the telescopic spring 217 to enable the clamping block 211 to slide towards the inside of the clamping groove 212, and the wide screw 1 and the narrow screw 3 are separated from clamping.

Referring to fig. 5, the first bevel gear 221 has a pull groove 214 formed on a side thereof, and the end of the pull rod 215 is slidably connected inside the pull groove 214.

When clamping device 21 joint, impel inside the second U type groove 26 of broad screw 1 with narrow screw 3, because joint piece 211 receives the extrusion of second U type groove 26 inner wall, make pull rod 215 tip slide in pull groove 214 is inside, thereby make joint piece 211 indentation first U type groove 25, when broad screw 1 pushed to second U type groove 26 top, joint piece 211 was in the bullet joint groove 212 under expanding spring 217's effect, thereby realized broad screw 1 and narrow screw 3 joint.

Referring to fig. 5, the clamping block 211 is made of a hard alloy material.

The clamping block 211 made of hard alloy materials is not easy to damage when clamped for multiple times.

The working principle is as follows: when the sectional type screw rod is disassembled, firstly, the pull button 2310 is pulled, the pull button 2310 drives the stretching rod 235 to stretch outwards, when the pull button 2310 is loosened, the clamping slide rod 239 is clamped in the concave part of the heart-shaped groove 238 under the action of the memory spring 233, so that the stretching rod 235 is pulled to be stably clamped, the switch device 23 is opened, the stretching rod 235 pulls the driving rack 225 to move, so that the rotating gear 224 meshed and connected with the rack 225 rotates, the driving rod 227 and the second bevel gear 222 rotate, the first bevel gear 221 meshed and connected with the second bevel gear 222 rotates, the worm 226 is driven to rotate, the linkage device 22 simultaneously drives the clamping devices 21 at the two ends to be connected and driven, so that the worm 226 rotates, the worm wheel 216 meshed and connected with the worm 226 rotates, the pull rod 215 is driven to pull towards the direction of the worm 226 when the worm wheel 216 rotates, and the worm 226 overcomes the elasticity of the telescopic spring 217 to enable the clamping block 211 to slide towards the inside of the clamping groove 212, the wide screw 1 and the narrow screw 3 are separated from clamping.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a screw rod for sectional type double screw extruder, includes broad screw (1) and narrow screw (3), broad screw (1) tip is provided with narrow screw (3), its characterized in that: connecting device (2) is installed to narrow screw rod (3) tip, connecting device (2) include latch fitting (21), aggregate unit (22), switching device (23), rod groove (24), first U type groove (25) and second U type groove (26), second U type groove (26) have been seted up to wide screw rod (1) tip, first U type groove (25) have been seted up to narrow screw rod (3) tip, latch fitting (21) are installed to first U type groove (25) internal symmetry, first U type groove (25) internally mounted has aggregate unit (22) of being connected with aggregate unit (21) cooperation, narrow screw rod (3) inside set up with rod groove (24) of first U type groove (25) intercommunication, rod groove (24) internally mounted has switching device (23) of being connected with aggregate unit (22).

2. The screw of claim 1, wherein: the switch device (23) comprises a fixing plate (231), a limiting block (232), a memory spring (233), a clamping block (234), a stretching rod (235), a rotating rod (236), a heart-shaped groove (238), a clamping sliding rod (239), a pull button (2310) and a round groove (2311), wherein the end part of the narrow screw rod (3) is provided with the round groove (2311) communicated with the rod groove (24), the round groove (2311) and the rod groove (24) are internally inserted with the stretching rod (235) in a sliding manner, the end part of the stretching rod (235) is fixed with the pull button (2310), the inner wall of the rod groove (24) is fixed with the fixing plate (231), the fixing plate (231) is internally provided with the heart-shaped groove (238), the outer surface of the stretching rod (235) is rotationally fixed with the rotating rod (236), the end part of the rotating rod (236) is fixed with the clamping sliding rod (239) inserted in the heart-shaped groove (238), the limiting block (232) is fixed on the outer surface of the stretching rod (235), the rod groove (24) is internally and symmetrically fixed with clamping blocks (234), the end parts of the clamping blocks (234) are fixed with memory springs (233), and the tail ends of the memory springs (233) are fixedly connected with the limiting blocks (232).

3. The screw of claim 2, wherein: the linkage device (22) comprises a first bevel gear (221), a second bevel gear (222), a fixed block (223), a rotating gear (224), a rack (225), a worm (226) and a transmission rod (227), fixed blocks (223) are symmetrically fixed in the first U-shaped groove (25), a transmission rod (227) is rotatably connected in the fixed blocks (223) in a penetrating manner, a rotating gear (224) is fixedly connected to the center of the outer surface of the transmission rod (227) in a penetrating manner, a rack (225) which is meshed and connected with the rotating gear (224) is fixed at the tail end of the stretching rod (235), the inner wall of the first U-shaped groove (25) is symmetrically and rotatably connected with a worm (226), a second bevel gear (222) is symmetrically and fixedly connected to the end part of the transmission rod (227) in a penetrating way, the end parts of the first bevel gears (221) are fixedly connected with the first bevel gears (221) in a penetrating mode, and the first bevel gears (221) are in meshed connection with the second bevel gears (222).

4. A screw for a segmented twin-screw extruder as claimed in claim 3, wherein: clamping device (21) are including joint piece (211), joint groove (212), spout (213), pull rod (215), worm wheel (216) and expanding spring (217), connecting device (2) tip symmetry has seted up spout (213), inside equal slip cross-under of spout (213) has joint piece (211), joint piece (211) end fixing has expanding spring (217), and both sides joint piece (211) pass through expanding spring (217) elastic connection, first U type groove (25) inner wall symmetry rotates and installs worm wheel (216) of being connected with worm (226) meshing, worm wheel (216) end rotation is connected with pull rod (215), and pull rod (215) end has the connection with joint piece (211), joint groove (212) of cooperation joint piece (211) joint are seted up to second U type groove (26) inner wall.

5. The screw of claim 4, wherein: pull grooves (214) are formed in the side edges of the first bevel gears (221), and the tail ends of the pull rods (215) are connected inside the pull grooves (214) in a sliding mode.

6. The screw of claim 5, wherein: the clamping block (211) is made of hard alloy materials.