CN113414958A

CN113414958A - EVA plastic film extruder

Info

Publication number: CN113414958A
Application number: CN202110484397.6A
Authority: CN
Inventors: 白鹏; 贺菲; 许良云
Original assignee: Individual
Current assignee: Yiwu Jingcheng Photovoltaic Materials Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-09-21
Anticipated expiration: 2041-04-30
Also published as: CN113414958B

Abstract

The invention belongs to the technical field of plastic film extrusion, and particularly relates to an EVA plastic film extruder which comprises a support, an extrusion cylinder, a first motor, a second motor, a feeding cylinder and a controller, wherein the extrusion cylinder is arranged on the support; the material extruding barrel is fixedly connected above the bracket; a screw rod is rotationally connected in the extruding cylinder; the extension end of the first motor is rotationally and fixedly connected with the screw rod; the second motor is fixedly connected to the side wall of the side, close to the feeding cylinder, of the extruding cylinder; a feeding cylinder is fixedly connected above one side of the extruding cylinder close to the first motor; a first groove is formed in the extruding cylinder above the screw; a driving gear is rotationally connected in the first groove; the driving gear rotates through a first rotating shaft; one end of the first rotating shaft is fixedly connected with an external second motor, and the other end of the first rotating shaft is fixedly connected with the first bearing inner ring; the first bearing outer ring is fixedly connected to the side wall of the first groove; the invention can clean the viscous-state residues on the screw blade in the extruding cylinder, reduce the production cost and prolong the service life of the machine.

Description

EVA plastic film extruder

Technical Field

The invention belongs to the technical field of plastic film extrusion, and particularly relates to an EVA plastic film extruder.

Background

The extruder consists of a machine barrel, a screw, heating, temperature control, power transmission and the like. The traditional plastic extruder extruding process is realized by means of heating outside a machine barrel, solid materials and the machine barrel, screw friction and melt shearing force, wherein friction coefficient and friction force, viscosity and shearing force are factors influencing traditional plastic extrusion, and the factors influencing friction and viscosity are very complex, so that the traditional plastic extruder extruding process is in an unstable state and is difficult to control, the traditional plastic extruder extruding process is particularly prominent for some thermosensitive plastics with poor thermal stability and high viscosity, and the materials are plasticized into a dough after being mixed by an internal mixer.

Some technical schemes of EVA plastic film extruders also appear in the prior art, for example, a chinese patent with application number CN201610587079.1 discloses an EVA plastic film extruder, belonging to the technical field of machinery. It has solved the inconvenient problem of current extrusion moulding machine equipment. This plastic film extruder includes the frame and locates the barrel in the frame, be equipped with the feeding screw in the barrel, be equipped with in the frame and drive feeding screw pivoted actuating mechanism, the barrel top is equipped with the feed cylinder, all be fixed with electric heater on the lateral wall of barrel middle part and right-hand member, feed cylinder and barrel inner chamber intercommunication between them, the cover has thermal-insulated section of thick bamboo on the barrel, and electric heater all is located thermal-insulated section of thick bamboo, exhaust portion and the drainage part that is the tube-shape have respectively on the upper and lower both sides wall at barrel middle part, thermal-insulated section of thick bamboo is formed by the equal semicircular last casing of longitudinal section and the concatenation of lower casing, it has connecting hole one and connecting hole two to run through respectively on last casing and the lower casing, exhaust portion and drainage part insert respectively and establish and fix in connecting hole one connecting hole two through the mode of tight fit. Although this extruder has the convenient advantage of equipment, but the inside raw materials of the device progressively become high elastic state from the glass state, become viscous state at last, reach complete plastify, extrude the film from the die head, accomplish the work after, because of the viscidity is great behind the raw materials plastify, thereby make still have the residual material of a small amount of viscous state on the pay-off screw rod, if not in time clear up the residual material, can lead to the residual material to be overheated decomposition, cause whole batch to become the waste material even, thereby increase manufacturing cost, reduce machine life.

Disclosure of Invention

In order to make up for the defects of the prior art, the problems that after the materials are mixed by an extrusion cylinder, the materials are plasticized into a dough shape, the viscosity of the materials is higher after the materials are plasticized, a small part of the materials is more or less adhered to the surface of a screw blade in each time, the residual materials are decomposed by overheating, even the whole time of the materials is wasted, the production cost is increased, and the service life of a machine is reduced are solved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the EVA plastic film extruder comprises a support, an extruding cylinder, a first motor, a second motor, a feeding cylinder and a controller, wherein the extruding cylinder is arranged on the support; the material extruding barrel is fixedly connected above the bracket; a screw rod is rotationally connected in the extruding cylinder; the extension end of the first motor is rotationally and fixedly connected with the screw rod; the second motor is fixedly connected to the side wall of the side, close to the feeding cylinder, of the extruding cylinder; a feeding cylinder is fixedly connected above one side of the extruding cylinder close to the first motor; a first groove is formed in the extruding cylinder above the screw; a driving gear is rotationally connected in the first groove; the driving gear rotates through a first rotating shaft; one end of the first rotating shaft is fixedly connected with an external second motor, and the other end of the first rotating shaft is fixedly connected with the first bearing inner ring; the first bearing outer ring is fixedly connected to the side wall of the first groove; a plurality of driven gears are uniformly and rotatably connected in the first groove; the driven gear rotates through a second rotating shaft; two ends of the second rotating shaft are fixedly connected with two second bearing inner rings respectively; the outer rings of the second bearings are fixedly connected with the side walls of the two sides of the first groove respectively; rotating belts are arranged outside the driving gear and the driven gear; the internal gear teeth of the rotating belt are meshed with the gear teeth of the driving gear and the gear teeth of the driven gear; (ii) a A plurality of first fixed blocks are uniformly and fixedly connected to the outer surface of the rotating belt; the surface of the first fixed block is fixedly connected with elastic rubber; the surface of the elastic rubber is fixedly connected with a stop block; the contour of the stop block is attached to the contour of the surface of the screw rod; a sliding groove is formed below the first groove; the baffle block extends out of the sliding groove and is attached to the surface of the screw rod; a second groove is formed in the left side of the rotating belt of the extruding cylinder; a sliding plate is arranged above the second groove; the sliding plate is elastically connected with the second groove through a first spring; the upper surface of one end of the sliding plate close to the rotating belt is designed into an arc shape; a third groove is formed in the right side of the rotating belt of the extruding cylinder; the third groove is designed to incline 55 degrees from the horizontal direction to the lower part of the inner part of the first groove; a scraping block is elastically connected in the third groove through a second spring; the scraping block is designed to be attached to the rotating belt at one end close to the rotating block; the first motor and the second motor are controlled by a controller; the extruding cylinder is formed by splicing two sections of symmetrical semi-extruding cylinders and welding; when the rotating belt rotates anticlockwise, an inductor is fixedly connected to a first fixed block of a first contact sliding plate; the inner wall of the sliding chute is fixedly connected with a first receiver close to one side of the first spring; the upper surface of the scraping block is fixedly connected with a second receiver.

When the semi-extrusion charging barrel works, a plurality of sections of grooves are formed above the semi-extrusion charging barrel and are spliced to form a complete first groove, a second groove and a third groove, a first bearing, a plurality of second bearings and a rotating belt are respectively and correspondingly installed on the side wall of the first groove of the first semi-extrusion charging barrel, so that the first bearing is fixedly connected with the outer rings of the plurality of second bearings on the inner wall of the first groove of the first semi-extrusion charging barrel, a plurality of second bearings are correspondingly installed on the side wall of the first groove of the second semi-extrusion charging barrel, so that the outer rings of the second bearings are fixedly connected with the inner wall of the first groove, a second rotating shaft is fixedly connected with the inner ring of the second bearing, a driven gear is fixedly connected onto the second rotating shaft, a second motor is installed outside the second semi-extrusion charging barrel and close to the side wall of the feeding barrel, a through hole is formed on the side wall of the second semi-extrusion charging barrel, so that the first rotating shaft can rotate inside the through hole, and a driving gear is installed at one end of the first rotating shaft far away from the second motor, a driven gear is arranged on the inner wall of the second bearing, the first half material extruding cylinder is correspondingly spliced with the second half material extruding cylinder, so that the first rotating shaft is fixedly connected with the first bearing inner ring, the plurality of second rotating shafts are respectively and correspondingly fixedly connected with the second bearing inner ring of the other half material extruding cylinder, and after splicing is completed, the material extruding cylinders can be installed by welding the outside;

after the standby device finishes extruding viscous state materials, the controller continues to control the first motor to rotate clockwise, at the moment, the controller controls the second motor to rotate anticlockwise to drive the first rotating shaft to rotate, the first rotating shaft drives the driving gear to rotate, one end of the first rotating shaft, which is far away from the second motor, is fixedly connected with the inner ring of the first bearing, the outer ring of the first bearing is fixedly connected with the side wall of the first groove, so that the first rotating shaft rotates, the outer ring of the first bearing does not move, and the inner ring rotates along with the first rotating shaft; the internal gear teeth are meshed with the gear teeth of the driving gear and the gear teeth of the driven gear; when the first fixed blocks contact the upper surface of the sliding plate, the first fixed blocks continuously rotate along with the rotating belt, the upper surface of the sliding plate is extruded by the first fixed blocks, so that the sliding plate moves towards the lower side of the first groove close to the first side of the rotating belt and moves towards the upper side of the first groove far away from the first side of the rotating belt, the first spring is in a stretching state, and the elastic rubber and the stop block rotate along with the first fixed blocks; when the stop block completely slides in the chute, the sliding plate resets, the first spring resets, when the rotating belt rotates anticlockwise, the first fixed block which enters the chute first rotates to the upper part of the screw rod through the chute, when the first fixed block at the rear part is in the first groove, the first receiver fixedly connected with one side of the inner wall of the chute close to the first spring receives the sensor signal of the first fixed block which enters the chute when the rotating belt rotates anticlockwise, the first receiver controls the second motor to stop rotating, the screw rod rotates clockwise because the rotating speed of the first motor is unchanged, so that one side of the screw rod used for conveying the raw material moves towards the stop block, and because the design that the stop block is attached to one side of the screw rod used for conveying the raw material, one side of the screw rod used for conveying the raw material continues to rotate because the screw rod rotates along with the first motor after the stop block contacts the screw rod and one side of the screw rod used for conveying the raw material is obtained by virtue of the design that the stop block is attached to one side of the screw rod used for conveying the raw material, the stop blocks are attached to and continuously rotate along with one side of the screw rod used for conveying raw materials, so that the stop blocks drive the rotating belt to rotate, the rotating belt drives the rear first fixed block to rotate, the rear stop blocks are attached to one side of the screw rod used for conveying raw materials, the stop blocks scrape off residual viscous-state materials on one side of the screw rod used for conveying raw materials, when the rotating belt rotates anticlockwise, the first fixed block entering the chute moves to the scraping block, a second receiver on the scraping block receives a sensor signal on the first fixed block, so that the second receiver controls a second motor to operate, the second motor drives the driving gear to rotate, the driving gear drives the rotating belt to rotate, the rotating belt drives the first fixed blocks to move towards the scraping block, when the rotating belt drives the first fixed blocks to contact with the scraping block, the scraping block extrudes the second spring, the scraping block moves towards the inside of the third groove, the second spring is compressed, the scraping block is contacted with one end of the rotating belt and scrapes the stop block, the stop block rotates along with the rotating belt, the stop block is fixedly connected with the first fixing block through the elastic rubber, so that the stop block enters the first groove, viscous-state materials enter the chute when the screw rod in the extruding cylinder rotates, when the rotating belt rotates, the scraping block is attached to the rotating belt, so that when the rotating belt rotates, the scraping block scrapes the viscous-state materials on the surface of the rotating belt, the materials rotate out along with the screw rod, when the stop block moves to the upper part of the sliding plate, a small amount of viscous-state materials still exist on the stop block, the first fixing block contacts the sliding plate, the first fixing block rotates along with the rotating belt, so that the stop block is scraped secondarily on the upper surface of the sliding plate, and the materials are left above the, the residual material is scraped by the first fixed block fixedly connected with the rotating belt at the rear, the screw rod is scraped for multiple times, the sliding groove, the surface of the rotating belt and the stop block are scraped, the controller controls the second motor to drive the driving gear to rotate, the driving gear drives the rotating belt to operate, the rotating belt drives the first fixed blocks to operate to the upper side of the rotating belt, the controller controls the second motor to stop, the first motor is controlled to stop, the screw rod is cleaned, the first groove and the sliding groove are cleaned, the residual material in a viscous state is effectively prevented from being adhered to the surface of the screw rod, the residual material is effectively prevented from being decomposed due to overheating when the residual material is heated and operated in the next extruding cylinder, the whole batch of material is wasted, the service life of the machine is effectively prolonged, and the working efficiency of the machine is improved.

Preferably, the surface of the first fixed block is fixedly connected with a plurality of third springs; and the other ends of the third springs are fixedly connected with the side wall of the stop block.

When the elastic rubber is in work, the rotating belt drives the first fixing block to rotate, when the first fixing block rotates to the position above the sliding plate, the first fixing block rotates along with the rotating belt, the stop block extrudes the sliding plate, the sliding plate moves towards the position below the inner part of the second groove at one end, close to the rotating belt, of the sliding plate, the stop block moves by being attached to the sliding plate, the elastic rubber is twisted, and a plurality of third springs are fixedly connected to the surface of the first fixing block; a plurality of third spring other ends link firmly the dog lateral wall for the dog can not drop from elastic rubber surface, thereby makes better striking off the screw surface, and then effectual reduction viscous state's residual material is remained in crowded feed cylinder inside, improves machine life.

Preferably, the rotating belt is fixedly connected with a second fixed block at the right side of the first fixed block; the second fixed block is designed to be triangular.

The during operation, the rotating band drives first fixed block and rotates, when the piece is struck off in the contact of second fixed block, because of the triangle-shaped design of second fixed block, thereby make and strike off a laminating second fixed block surface motion, avoid striking off a direct contact dog, thereby lead to the dog to easily drop, and the second fixed block can effectually prevent to strike off a contact third spring, avoid striking off the piece and break being connected of first fixed block and dog, thereby make the dog quick, steady along with first fixed block enter into to first recess inside, and then effectual improvement machine life, increase production rate.

Preferably, the sliding plate is designed to correspond to the left side surface of the first groove on the surface of the end away from the rotating belt.

The during operation, the rotating band drives first fixed block and rotates, when first fixed block moves to the sliding plate top, rotate along with the rotating band, the dog extrudees the sliding plate, make the sliding plate in being close to the motion of rotating band one end to the inside below of second recess, keep away from the motion of rotating band one end to the inside top of second recess, because of the sliding plate in keeping away from rotating band one end surface and the corresponding design of first recess left side surface, thereby make the sliding plate can be better slide in first recess is inside, thereby when dog contact extrusion sliding plate, the sliding plate can more effectually slide to the inside top of first recess, thereby make the dog can get into the spout smoothly, effectual improvement dog strikes off efficiency to the screw rod surface.

Preferably, the upper surface inside the first groove is uniformly and fixedly connected with a plurality of bumps.

When the automatic material extruding device works, when the stop block moves to the upper part inside the first groove along with the rotating belt, a plurality of third springs are fixedly connected to the surface of the first fixing block, the other ends of the third springs are fixedly connected with the side wall of the stop block, one end of the elastic rubber, which is far away from the stop block, is in contact with the upper surface inside the first groove, a plurality of convex blocks are uniformly and fixedly connected to the upper surface inside the first groove, the stop block is in contact with the lower end of the convex block, and rotates along with the rotating belt, the stop block is scraped below the convex block, and the convex block is completely scraped by the stop block, the stop block is elastically connected with the stop block, when the stop block is in contact with the upper surface of the first groove again, the stop block generates vibration, the residual materials adhered to the surface of the stop block can be shaken down, the residual materials falling on the surface of the rotating belt are rotated along with the sliding plate and scraped by the scraping block, and the residual materials fall into the extruding cylinder and are rotated out along with the screw rod.

Preferably, the intersection of the lower surface of the lug and the surface close to one side of the scraping block is in a wave-shaped design.

During operation, when the dog moves to the inside top of first recess along with the rotating band, dog contact lug lower extreme, because of the lug lower surface with be close to strike off the crossing wave design of a side surface of piece, and rotate along with the rotating band, the dog is struck off to the lug below, effectually avoid because of the lug lower surface with be close to strike off the crossing department of a side and be parallel lines, and the lug that leads to being close to strike off piece one side strikes off more to the dog surface, has increased the frictional force between lug and the dog to lead to dog and elastic rubber disconnection.

The invention has the following beneficial effects:

1. according to the EVA plastic film extruder, the second fixed block, the scraping block and the rotating belt are arranged, so that the scraping block can be prevented from directly contacting the stop block, the stop block is easy to fall off, the second fixed block can effectively prevent the scraping block from contacting the third spring, the scraping block is prevented from breaking the connection between the first fixed block and the stop block, the stop block can rapidly and stably enter the first groove along with the first fixed block, the service life of the extruder is effectively prolonged, and the production rate is increased.

2. According to the EVA plastic film extruder, the lug and the stop block are arranged, so that the stop block can be scraped under the lug, when the stop block contacts the upper surface of the first groove again after the lug completely scrapes the stop block, the stop block vibrates to remove residues adhered to the surface of the stop block, and the residual materials falling on the surface of the rotating belt are scraped along with the sliding plate and the scraping block, so that the residual materials fall into the extruding cylinder and are rotated out along with the screw.

3. According to the EVA plastic film extruder, the sliding plate, the stop block and the rotating belt are arranged, so that when the first fixed block rotates to the position above the sliding plate, the sliding plate can better slide in the first groove due to the fact that the surface of one end, far away from the rotating belt, of the sliding plate is designed to correspond to the surface of the left side of the first groove, and therefore when the stop block contacts and extrudes the sliding plate, the sliding plate can more effectively slide towards the position above the inner part of the first groove, the stop block can smoothly enter the sliding groove, and the scraping efficiency of the stop block on the surface of a screw rod is effectively improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a front view of the present invention;

FIG. 2 is a front view of the barrel of the present invention, shown in half-section;

FIG. 3 is a first cross-sectional view of the extrusion barrel of the present invention;

FIG. 4 is a second cross-sectional view of the extrusion barrel of FIG. 1 at a second motor;

FIG. 5 is a front view of the rotating band of the present invention;

in the figure: the device comprises a support 1, a squeezing barrel 2, a first motor 3, a second motor 4, a feeding barrel 5, a screw 6, a first groove 11, a driving gear 12, a first rotating shaft 13, a first bearing 14, a driven gear 15, a second rotating shaft 16, a second bearing 17, a rotating belt 18, a first fixed block 19, elastic rubber 21, a stop 22, a sliding groove 23, a second groove 24, a sliding plate 25, a first spring 26, a third groove 27, a second spring 28, a scraping block 29, a third spring 31, a second fixed block 32 and a protruding block 33.

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.

As shown in fig. 1 to 5, the EVA plastic film extruder according to the present invention includes a support 1, a barrel 2, a first motor 3, a second motor 4, a feeding barrel 5 and a controller; the extruding barrel 2 is fixedly connected above the support 1; a screw rod 6 is rotationally connected in the extruding cylinder 2; the extending end of the first motor 3 is rotationally and fixedly connected with a screw 6; the second motor 4 is fixedly connected with the side wall of the extruding cylinder 2 close to one side of the feeding cylinder 5; a feeding cylinder 5 is fixedly connected above one side of the extruding cylinder 2 close to the first motor 3; a first groove 11 is formed in the extrusion cylinder 2 above the screw 6; a driving gear 12 is rotatably connected in the first groove 11; the driving gear 12 rotates through a first rotating shaft 13; one end of the first rotating shaft 13 is fixedly connected with the external second motor 4, and the other end of the first rotating shaft is fixedly connected with the inner ring of the first bearing 14; the outer ring of the first bearing 14 is fixedly connected with the side wall of the first groove 11; a plurality of driven gears 15 are uniformly and rotatably connected in the first groove 11; the driven gear 15 is rotated by a second rotating shaft 16; two ends of the second rotating shaft 16 are fixedly connected with two inner rings of a second bearing 17 respectively; the outer rings of the second bearings 17 are fixedly connected with the side walls of the two sides of the first groove 11 respectively; a rotating belt 18 is arranged outside the driving gear 12 and the driven gear 15; the internal gear teeth of the rotating belt 18 are engaged with the gear teeth of the driving gear 12 and the gear teeth of the driven gear 15; a plurality of first fixed blocks 19 are uniformly and fixedly connected to the outer surface of the rotating belt 18; the surface of the first fixed block 19 is fixedly connected with elastic rubber 21; the surface of the elastic rubber 21 is fixedly connected with a stop block 22; the contour of the stop block 22 is attached to the contour of the surface of the screw 6; a sliding groove 23 is formed below the first groove 11; the stopper 22 extends out of the sliding groove 23 and is attached to the surface of the screw 6; a second groove 24 is formed in the left side of the rotating belt 18 of the extruding cylinder 2; a sliding plate 25 is arranged above the second groove 24; the sliding plate 25 is elastically connected with the second groove 24 through a first spring 26; the sliding plate 25 is designed to be arc-shaped on the upper surface of one end close to the rotating belt 18; a third groove 27 is formed in the right side of the rotating belt 18 of the extruding cylinder 2; the third groove 27 is designed to be inclined by 45 degrees towards the lower part of the inner part of the first groove 11 from the horizontal direction; a scraping block 29 is elastically connected in the third groove 27 through a second spring 28; the scraping block 29 is attached to the rotating belt 18 at one end close to the rotating block; the first motor 3 and the second motor 4 are controlled by a controller; the extruding cylinder 2 is formed by splicing two sections of symmetrical semi-extruding cylinders 2 and then welding; when the rotating belt 18 rotates anticlockwise, a sensor is fixedly connected to the first fixed block 19 of the first contact sliding plate 25; the inner wall of the sliding groove 23 is fixedly connected with a first receiver close to one side of the first spring 26; the upper surface of the scraping block 29 is fixedly connected with a second receiver.

When the semi-extrusion charging barrel works, the multi-section grooves arranged above the semi-extrusion charging barrel are spliced to form a complete first groove 11, a second groove 24 and a third groove 27, the side wall of the first groove 11 of the first semi-extrusion charging barrel is respectively and correspondingly provided with a first bearing 14, a plurality of second bearings 17 and a rotating belt 18, so that the first bearing 14 is fixedly connected with the inner wall of the first groove 11 of the first semi-extrusion charging barrel and the outer rings of the second bearings 17, the side wall of the first groove 11 of the second semi-extrusion charging barrel is correspondingly provided with a plurality of second bearings 17, so that the outer ring of the second bearing 17 is fixedly connected with the inner wall of the first groove 11, a second rotating shaft 16 is fixedly connected with the inner ring of the second bearing 17, a driven gear 15 is fixedly connected on a second rotating shaft 16, a second motor 4 is arranged on the outer side wall of the second semi-extrusion charging barrel, which is close to the side wall of the feeding barrel 5, a through hole is arranged on the side wall of the second semi-extrusion charging barrel, so that the first rotating shaft 13 can rotate in the through hole, installing a driving gear 12 at one end of the first rotating shaft 13 far away from the second motor 4, installing a driven gear 15 on the inner wall of the second bearing 17, correspondingly splicing the first half material extruding cylinder with the second half material extruding cylinder, so that the first rotating shaft 13 is fixedly connected with an inner ring of the first bearing 14, and a plurality of second rotating shafts 16 are respectively and correspondingly fixedly connected with inner rings of the second bearings 17 of the other half material extruding cylinders, and after splicing is completed, welding the outside to complete the installation of the material extruding cylinder 2;

after the standby device finishes extruding viscous state materials, the controller continuously controls the first motor 3 to rotate clockwise, at the moment, the controller controls the second motor 4 to rotate anticlockwise to drive the first rotating shaft 13 to rotate, the first rotating shaft 13 drives the driving gear 12 to rotate, and as the end, far away from the second motor 4, of the first rotating shaft 13 is fixedly connected with the inner ring of the first bearing 14, the outer ring of the first bearing 14 is fixedly connected with the side wall of the first groove 11, the first rotating shaft 13 rotates, the outer ring of the first bearing 14 does not move, and the inner ring rotates along with the first rotating shaft 13; since the internal gear teeth of the rotating belt 18 are engaged with the gear teeth of the driving gear 12 and the gear teeth of the driven gear 15; when the driving gear 12 rotates, the rotating belt 18 is driven to rotate, the rotating belt 18 drives the driven gears 15 to rotate, so that the first fixing blocks 19 rotate along with the rotating belt 18, when the first fixing blocks 19 contact the upper surface of the sliding plate 25, the sliding plate 25 continues to rotate along with the rotating belt 18, the first fixing blocks 19 extrude the upper surface of the sliding plate 25, the sliding plate 25 moves towards the lower side of the first groove 11 close to one side of the rotating belt 18, moves towards the upper side of the first groove 11 far away from one side of the rotating belt 18, the first spring 26 is in a stretching state, and the elastic rubber 21 and the stop block 22 rotate along with the first fixing blocks 19; when the stop block 22 completely slides in the sliding groove 23, the sliding plate 25 resets, the first spring 26 resets, when the rotating belt 18 rotates counterclockwise, the first fixed block 19 which enters the sliding groove 23 first rotates to the upper side of the screw rod 6 through the sliding groove 23, when the first fixed block 19 at the rear side is in the first groove 11, the first receiver fixedly connected to one side of the inner wall of the sliding groove 23 close to the first spring 26 receives the sensor signal on the first fixed block 19 which enters the sliding groove 23 first when the rotating belt 18 rotates counterclockwise, at this time, the first receiver controls the second motor 4 to stop rotating, because the rotating speed of the first motor 3 is not changed, the screw rod 6 rotates clockwise, so that one side of the screw rod 6 used for conveying the raw material moves towards the stop block 22, and because the stop block 22 and one side of the screw rod 6 used for conveying the raw material are designed to be attached, so that the stop block 22 contacts with the screw rod 6 to convey the raw material, one side of the screw 6, which is used for conveying raw materials, continuously rotates along with the rotation of the first motor 3 due to the rotation of the screw 6, so that the stop 22 is attached to and continuously rotates along with one side of the screw 6, which is used for conveying raw materials, so that the stop 22 drives the rotating belt 18 to rotate, the rotating belt 18 drives the rear first fixed block 19 to rotate, further the rear stop 22 is attached to one side of the screw 6, which is used for conveying raw materials, and the plurality of stops 22 scrape off residual viscous state materials on one side of the screw 6, which is used for conveying raw materials, when the rotating belt 18 rotates anticlockwise, the first fixed block 19, which enters the chute 23, moves to the scraping block 29, at the moment, the second receiver on the scraping block 29 receives a sensor signal on the first fixed block 19, so that the second receiver controls the second motor 4 to operate, the second motor 4 drives the driving gear 12 to rotate, and the driving gear 12 drives the rotating belt 18 to rotate, the rotating belt 18 drives the plurality of first fixed blocks 19 to move towards the scraping block 29, when the rotating belt 18 drives the first fixed blocks 19 to contact the scraping block 29, the scraping block 29 extrudes the second spring 28, so that the scraping block 29 moves towards the inside of the third groove 27, the second spring 28 is compressed, the scraping block 29 contacts one end close to the rotating belt 18 and scrapes the stop block 22, the stop block 22 rotates along with the rotating belt 18, the stop block 22 is fixedly connected with the first fixed blocks 19 through the elastic rubber 21, so that the stop block 22 enters the inside of the first groove 11, and the screw 6 in the barrel 2 rotates, so that the viscous material enters the chute 23, when the rotating belt 18 rotates, because the scraping block 29 is attached to the rotating belt 18, when the rotating belt 18 rotates, the scraping block 29 scrapes the viscous material on the surface of the rotating belt 18, so that the material rotates along with the screw 6, and when the stop block 22 moves to the upper part of the sliding plate 25, because a small amount of viscous-flow-state materials still exist on the stop block 22, the first fixed block 19 contacts the sliding plate 25, the first fixed block 19 rotates along with the rotating belt 18, so that the upper surface of the sliding plate 25 secondarily scrapes the stop block 22, the materials are remained above the sliding plate 25, the first fixed block 19 fixedly connected with the rotating belt 18 at the rear part scrapes the residual materials, after the screw 6, the chute 23, the surface of the rotating belt 18 and the stop block 22 are scraped for multiple times, the controller controls the second motor 4 to drive the driving gear 12 to rotate, the driving gear 12 drives the rotating belt 18 to rotate, when the rotating belt 18 drives the first fixed blocks 19 to rotate above the rotating belt 18, the controller controls the second motor 4 to stop rotating, controls the first motor 3 to stop rotating, so that the cleaning of the screw 6, the first groove 11 and the inside of the chute 23 is finished, and the surface of the viscous-flow-state residual materials on the screw 6 is effectively avoided, thereby effectually avoided the residual material overheated decomposition when the crowded feed cylinder 2 heats the operation next time, lead to whole batch to become useless, and then the effectual work efficiency who improves machine life and improve the machine.

As an embodiment of the present invention, a plurality of third springs 31 are fixedly connected to the surface of the first fixing block 19; the other ends of the third springs 31 are fixedly connected with the side wall of the stop 22.

When the elastic rubber 21 is twisted, the rotating belt 18 drives the first fixing block 19 to rotate, when the first fixing block 19 rotates above the sliding plate 25, the stop block 22 rotates along with the rotating belt 18 to extrude the sliding plate 25, so that the sliding plate 25 moves towards the lower part of the inner part of the second groove 24 at one end close to the rotating belt 18, and the stop block 22 moves along with the sliding plate 25, so that the elastic rubber 21 is twisted, and a plurality of third springs 31 are fixedly connected to the surface of the first fixing block 19; a plurality of third spring 31 other ends link firmly dog 22 lateral wall for dog 22 can not follow the elastic rubber 21 surface and drop, thereby makes better scraping 6 surfaces of screw rod, and then the effectual residue material that reduces the viscous state is remained in extrusion section of thick bamboo 2 is inside, improves machine life.

As an embodiment of the present invention, the rotating belt 18 is fixedly connected to the second fixing block 32 at the right side of the first fixing block 19; the second fixed block 32 is designed to be triangular.

During operation, rotating band 18 drives first fixed block 19 and rotates, when second fixed block 32 contacts strikes off piece 29, because of the triangle-shaped design of second fixed block 32, thereby make and strike off the second fixed block 32 surface motion of piece 29 laminating, avoid striking off piece 29 direct contact dog 22, thereby lead to dog 22 to easily drop, and second fixed block 32 can effectually prevent to strike off piece 29 contact third spring 31, avoid striking off piece 29 and break first fixed block 19 and dog 22's being connected, thereby make dog 22 quick, steady entering into to first recess 11 along with first fixed block 19 inside, and then effectual improvement machine life, increase production rate.

As an embodiment of the present invention, the sliding plate 25 is designed to correspond to the left side surface of the first groove 11 at the end surface away from the rotating belt 18.

During operation, the rotating belt 18 drives the first fixing block 19 to rotate, when the first fixing block 19 rotates above the sliding plate 25, the sliding plate 25 is rotated along with the rotating belt 18, the stop block 22 extrudes the sliding plate 25, the sliding plate 25 moves towards the lower part inside the second groove 24 near one end of the rotating belt 18, one end of the sliding plate far away from the rotating belt 18 moves towards the upper part inside the second groove 24, and the sliding plate 25 is correspondingly designed with the left side surface of the first groove 11 on the surface of one end far away from the rotating belt 18, so that the sliding plate 25 can better slide inside the first groove 11, when the stop block 22 contacts and extrudes the sliding plate 25, the sliding plate 25 can more effectively slide towards the upper part inside the first groove 11, so that the stop block 22 can smoothly enter the sliding groove 23, and the scraping efficiency of the stop block 22 on the surface of the screw 6 is effectively improved.

In one embodiment of the present invention, a plurality of bumps 33 are uniformly attached to the inner upper surface of the first groove 11.

When the scraper 22 moves to the upper part inside the first groove 11 along with the rotating belt 18, because the surface of the first fixed block 19 is fixedly connected with the plurality of third springs 31, the other end of each third spring 31 is fixedly connected with the side wall of the scraper 22, so that one end of the scraper 22 far away from the elastic rubber 21 is contacted with the upper surface inside the first groove 11, and because the upper surface inside the first groove 11 is uniformly and fixedly connected with the plurality of bumps 33, the scraper 22 is contacted with the lower ends of the bumps 33 and rotates along with the rotating belt 18, the scraper 22 is scraped under the bumps 33, and after the bumps 33 completely scrape the scraper 22, because the third springs 31 are elastically connected with the scraper 22, when the scraper 22 is contacted with the upper surface of the first groove 11 again, the vibration generated by the scraper 22 can shake the residues adhered to the surface of the scraper 22, and the residues falling on the surface of the rotating belt 18 are scraped by the sliding plate 25 and the scraper block 29 along with the rotating belt 18, so that the residual material falls into the barrel 2 and is rotated out along with the screw 6.

In one embodiment of the invention, the intersection of the lower surface of the projection 33 and the surface of the scraper block 29 adjacent thereto is of a wave-like design.

When the scraper is in operation, when the stopper 22 moves to the upper part inside the first groove 11 along with the rotating belt 18, the stopper 22 contacts the lower end of the bump 33, and due to the wave-shaped design of the intersection of the lower surface of the bump 33 and the surface close to one side of the scraping block 29 and the rotation of the rotating belt 18, the stopper 22 is scraped under the bump 33, so that the situation that the surface of the stopper 22 is scraped more by the bump 33 close to one side of the scraping block 29 because the intersection of the lower surface of the bump 33 and the surface close to one side of the scraping block 29 is parallel lines is effectively avoided, the friction force between the bump 33 and the stopper 22 is increased, and the stopper 22 is disconnected from the elastic rubber 21.

The specific working process is as follows:

after the standby device finishes extruding viscous state materials, the controller continuously controls the first motor 3 to rotate clockwise, at the moment, the controller controls the second motor 4 to rotate to drive the first rotating shaft 13 to rotate, the first rotating shaft 13 drives the driving gear 12 to rotate, and as the end, far away from the second motor 4, of the first rotating shaft 13 is fixedly connected with the inner ring of the first bearing 14, the outer ring of the first bearing 14 is fixedly connected with the side wall of the first groove 11, the first rotating shaft 13 rotates, the outer ring of the first bearing 14 does not move, and the inner ring rotates along with the first rotating shaft 13; since the internal gear teeth of the rotating belt 18 are engaged with the gear teeth of the driving gear 12 and the gear teeth of the driven gear 15; when the driving gear 12 rotates, the rotating belt 18 is driven to rotate, and the rotating belt 18 drives the plurality of driven gears 15 to rotate, so that the plurality of first fixed blocks 19 rotate along with the rotating belt 18;

when the first fixed block 19 contacts the upper surface of the sliding plate 25 and continues to rotate along with the rotating belt 18, the first fixed block 19 presses the upper surface of the sliding plate 25, so that the sliding plate 25 moves towards the lower side of the first groove 11 on one side of the rotating belt 18 and moves towards the upper side of the first groove 11 on one side of the rotating belt 18, the first spring 26 is in a stretching state, and the elastic rubber 21 and the stop block 22 rotate along with the first fixed block 19; the stopper 22 extrudes the sliding plate 25, and because the surface of one end of the sliding plate 25, which is far away from the rotating belt 18, is designed to correspond to the left side surface of the first groove 11, the sliding plate 25 can better slide in the first groove 11, so that when the stopper 22 contacts and extrudes the sliding plate 25, the sliding plate 25 can more effectively slide upwards in the first groove 11, the stopper 22 can smoothly enter the chute 23, the scraping efficiency of the stopper 22 on the surface of the screw 6 is effectively improved, and when the stopper 22 is attached to the sliding plate 25 to move, the elastic rubber 21 is twisted, and because the surface of the first fixed block 19 is fixedly connected with the plurality of third springs 31; the other ends of the third springs 31 are fixedly connected with the side walls of the check blocks 22, so that the check blocks 22 cannot fall off from the surface of the elastic rubber 21, the surface of the screw 6 can be better scraped, the residual materials in a viscous state are effectively reduced from remaining in the extruding barrel 2, and the service life of the machine is prolonged;

when the stop block 22 completely slides in the chute 23, the sliding plate 25 is reset, the first spring 26 is reset, when the rotating belt 18 rotates counterclockwise, the first fixed block 19 which enters the chute 23 first rotates to the position above the screw 6 through the chute 23, when the first fixed block 19 at the rear is in the first groove 11, the first receiver fixedly connected to one side of the inner wall of the chute 23 close to the first spring 26 receives the sensor signal of the first fixed block 19 which enters the chute 23 first when the rotating belt 18 rotates counterclockwise, at this time, the first receiver controls the second motor 4 to stop rotating, because the rotating speed of the first motor 3 is unchanged, the screw 6 rotates clockwise, so that one side of the screw 6 used for conveying the raw material moves towards the stop block 22, and because the stop block 22 and one side of the screw 6 used for conveying the raw material are designed to be attached, after the stop block 22 contacts one side of the screw 6 used for conveying the raw material, one side of the screw 6 used for conveying the raw material continues to rotate along with the first motor 3, the stop blocks 22 are attached to and continuously rotate along with one side of the screw 6, which is used for conveying raw materials, so that the stop blocks 22 drive the rotating belt 18 to rotate, the rotating belt 18 drives the rear first fixing blocks 19 to rotate, and further the rear stop blocks 22 are attached to one side of the screw 6, which is used for conveying raw materials, the stop blocks 22 scrape off residual viscous state materials on one side of the screw 6, which is used for conveying raw materials, when the rotating belt 18 rotates anticlockwise, the first fixing blocks 19, which enter the sliding grooves 23, move to the scraping blocks 29, and at the moment, the second receiver on the scraping blocks 29 receives sensor signals on the first fixing blocks 19, so that the second receiver controls the second motor 4 to operate, the second motor 4 drives the driving gear 12 to rotate, the driving gear 12 drives the rotating belt 18 to rotate, the rotating belt 18 drives the first fixing blocks 19 to move towards the scraping blocks 29, so that one side of the screw 6, which is used for conveying raw materials, is always attached to the stop blocks 22, thereby effectively improving the cleaning of the raw materials adhered to the surface of the screw 6 by the stop block 22;

when the second fixing block 32 contacts the scraping block 29, the scraping block 29 is attached to the surface of the second fixing block 32 to move due to the triangular design of the second fixing block 32, so that the scraping block 29 is prevented from directly contacting the stopper 22, and the stopper 22 is easy to fall off, at this time, the scraping block 29 extrudes the second spring 28, so that the scraping block 29 moves towards the inside of the third groove 27, the second spring 28 is compressed, and the second fixing block 32 can effectively prevent the scraping block 29 from contacting the third spring 31, so that the scraping block 29 is prevented from breaking the connection between the first fixing block 19 and the stopper 22, so that the stopper 22 quickly and stably enters the first groove 11 along with the first fixing block 19, the service life of the machine is effectively prolonged, the production rate is increased, and when the screw 6 inside the barrel 2 rotates, the viscous-state material enters the chute 23, when the rotating belt 18 rotates, the scraping block 29 is attached to the rotating belt 18, so that when the rotating belt 18 rotates, the scraping block 29 scrapes off the viscous-state material on the surface of the rotating belt 18, and the material is rotated out along with the rotation of the screw 6;

when the stopper 22 moves to the upper part inside the first groove 11 along with the rotating belt 18, because the surface of the first fixing block 19 is fixedly connected with the plurality of third springs 31, and the other end of the third spring 31 is fixedly connected with the side wall of the stopper 22, one end of the stopper 22 far away from the elastic rubber 21 contacts the upper surface inside the first groove 11, because the upper surface inside the first groove 11 is uniformly and fixedly connected with the plurality of bumps 33, the stopper 22 contacts the lower end of the bump 33, because the intersection of the lower surface of the bump 33 and one side surface close to the scraping block 29 is designed in a wave shape and rotates along with the rotating belt 18, the stopper 22 is scraped below the bump 33, and after the stopper 22 is completely scraped by the bump 33, the stopper 22 is elastically connected with the third spring 31, when the stopper 22 contacts the upper surface of the first groove 11 again, the vibration generated by the stopper 22 shakes off the residues adhered to the surface of the stopper 22, and the residues falling on the surface of the rotating belt 18 are scraped by the sliding plate 25 and the scraping block 29 along with the rotating belt 18, so that the residual material falls into the extrusion cylinder 2 and is rotated out along with the screw 6;

when the stop block 22 moves to the upper part of the sliding plate 25, because a small amount of viscous-state materials still exist on the stop block 22, the first fixed block 19 contacts the sliding plate 25, the first fixed block 19 rotates along with the rotating belt 18, so that the stop block 22 is scraped secondarily by the upper surface of the sliding plate 25, the materials are left above the sliding plate 25, the residual materials are scraped by the first fixed block 19 fixedly connected with the rotating belt 18 from the rear, after the screw 6, the chute 23, the surface of the rotating belt 18 and the stop block 22 are scraped for multiple times, the controller controls the second motor 4 to drive the driving gear 12 to rotate, the driving gear 12 drives the rotating belt 18 to rotate, when the rotating belt 18 drives the first fixed blocks 19 to rotate above the rotating belt 18, the controller controls the second motor 4 to stop rotating, controls the first motor 3 to stop rotating, the cleaning of the insides of the screw 6, the first groove 11 and the chute 23 is finished, and the viscous-state residual materials are effectively prevented from being adhered to the surface of the screw 6, thereby effectually avoided the residual material overheated decomposition when the crowded feed cylinder 2 heats the operation next time, lead to whole batch to become useless, and then the effectual work efficiency who improves machine life and improve the machine.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. 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.

Claims

1. The EVA plastic film extruder is characterized in that: comprises a bracket (1), a material extruding barrel (2), a first motor (3), a second motor (4), a material feeding barrel (5) and a controller; the extruding cylinder (2) is fixedly connected above the bracket (1); a screw (6) is rotationally connected in the extruding cylinder (2); the extending end of the first motor (3) is rotationally and fixedly connected with a screw (6); the second motor (4) is fixedly connected with the side wall of the side, close to the feeding cylinder (5), of the extruding cylinder (2); a feeding cylinder (5) is fixedly connected above one side of the extruding cylinder (2) close to the first motor (3); a first groove (11) is formed in the extruding cylinder (2) above the screw (6); a driving gear (12) is rotationally connected in the first groove (11); the driving gear (12) rotates through a first rotating shaft (13); one end of the first rotating shaft (13) is fixedly connected with the external second motor (4), and the other end of the first rotating shaft is fixedly connected with the inner ring of the first bearing (14); the outer ring of the first bearing (14) is fixedly connected with the side wall of the first groove (11); a plurality of driven gears (15) are uniformly and rotatably connected in the first groove (11); the driven gear (15) rotates through a second rotating shaft (16); two ends of the second rotating shaft (16) are fixedly connected with the inner rings of the two second bearings (17) respectively; the outer rings of the second bearings (17) are fixedly connected with the side walls of the two sides of the first groove (11) respectively; a rotating belt (18) is arranged outside the driving gear (12) and the driven gear (15); the internal gear teeth of the rotating belt (18) are meshed with the gear teeth of the driving gear (12) and the gear teeth of the driven gear (15); a plurality of first fixed blocks (19) are uniformly and fixedly connected to the outer surface of the rotating belt (18); the surface of the first fixed block (19) is fixedly connected with elastic rubber (21); the surface of the elastic rubber (21) is fixedly connected with a stop block (22); the contour of the stop block (22) is attached to the contour of the surface of the screw rod (6); a sliding groove (23) is formed below the first groove (11); the stop block (22) extends out of the sliding groove (23) and is attached to the surface of the screw rod (6); a second groove (24) is formed in the left side of the rotating belt (18) of the extruding cylinder (2); a sliding plate (25) is arranged above the second groove (24); the sliding plate (25) is elastically connected with the second groove (24) through a first spring (26); the upper surface of one end of the sliding plate (25) close to the rotating belt (18) is designed into an arc shape; a third groove (27) is formed in the right side of the rotating belt (18) of the extruding cylinder (2); the third groove (27) is designed to be inclined by 45 degrees towards the lower part of the inner part of the first groove (11) from the horizontal direction; a scraping block (29) is elastically connected in the third groove (27) through a second spring (28); one end of the scraping block (29) close to the rotating block is attached to the rotating belt (18); the first motor (3) and the second motor (4) are controlled by a controller; the extruding cylinder (2) is formed by splicing two symmetrical semi-extruding cylinders (2) and welding; when the rotating belt (18) rotates anticlockwise, a sensor is fixedly connected to a first fixed block (19) of a first contact sliding plate (25); the inner wall of the sliding groove (23) is fixedly connected with a first receiver close to one side of the first spring (26); the upper surface of the scraping block (29) is fixedly connected with a second receiver.

2. The EVA plastic film extruder of claim 1, wherein: the surface of the first fixed block (19) is fixedly connected with a plurality of third springs (31); the other ends of the third springs (31) are fixedly connected with the side wall of the stop block (22).

3. The EVA plastic film extruder of claim 1, wherein: the rotating belt (18) is fixedly connected with a second fixed block (32) at the right side of the first fixed block (19); the second fixed block (32) is designed to be triangular.

4. The EVA plastic film extruder of claim 1, wherein: the surface of one end of the sliding plate (25) far away from the rotating belt (18) is designed correspondingly to the left side surface of the first groove (11).

5. The EVA plastic film extruder of claim 1, wherein: the upper surface in the first groove (11) is uniformly and fixedly connected with a plurality of convex blocks (33).

6. The EVA plastic film extruder of claim 5, wherein: the intersection of the lower surface of the convex block (33) and the surface close to one side of the scraping block (29) is in a wave-shaped design.