CN113414958B

CN113414958B - EVA plastic film extruder

Info

Publication number: CN113414958B
Application number: CN202110484397.6A
Authority: CN
Inventors: 白鹏; 贺菲; 许良云
Original assignee: Yiwu Jingcheng Photovoltaic Materials Co ltd
Current assignee: Yiwu Jingcheng Photovoltaic Materials Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2023-09-19
Anticipated expiration: 2041-04-30
Also published as: CN113414958A

Abstract

The invention belongs to the technical field of plastic film extrusion, in particular to an EVA plastic film extruder, which comprises a bracket, an extrusion cylinder, a first motor, a second motor, a feeding cylinder and a controller, wherein the bracket is arranged on the bracket; the extruding cylinder is fixedly connected above the bracket; the screw rod is rotationally connected with the extrusion cylinder; the extending end of the first motor is fixedly connected with a screw rod in a rotating way; the second motor is fixedly connected to the side wall of one side of the extrusion cylinder, which is close to the feeding cylinder; the feeding cylinder is fixedly connected above one side of the extruding cylinder, which is close to the first motor; a first groove is formed in the extrusion cylinder above the screw; the first groove is rotationally connected with a driving gear; 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 residue on the screw blade in the extrusion 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 extrusion process of the traditional plastic extruder is realized by external heating of a machine barrel, friction force and melt shearing force of solid materials and the machine barrel, screw rod, friction force, viscosity and shearing stress are factors influencing the extrusion of the traditional plastic, and the factors influencing the friction and viscosity are very complex, so that the extrusion process of the traditional plastic extruder is in an unstable state and is difficult to control, and particularly for some heat-sensitive plastics with poor heat stability and high viscosity, the materials are plasticized into a bulk shape after being mixed by an internal mixer, and each material is more or less adhered to the internal mixing chamber due to the fact that the materials contain elastomer and have high viscosity after plasticizing, so that the residual materials can be decomposed by overheating, even the whole material becomes waste, the production cost is increased, and the service life of the machine is reduced.

Technical schemes of EVA plastic film extruders also appear in the prior art, for example, a Chinese patent with the application number of CN201610587079.1 discloses an EVA plastic film extruder, and belongs to the technical field of machinery. It has solved the inconvenient problem of current extrusion molding machine equipment. The plastic film extruder comprises a frame and an extruding cylinder arranged on the frame, wherein a feeding screw is arranged in the extruding cylinder, a driving mechanism capable of driving the feeding screw to rotate is arranged on the frame, a feeding cylinder is arranged above the extruding cylinder, electric heaters are fixed on the outer side walls of the middle part and the right end of the extruding cylinder, the inner cavities of the feeding cylinder and the extruding cylinder are communicated, a heat insulation cylinder is sleeved on the extruding cylinder, the electric heaters are all positioned in the heat insulation cylinder, the upper side wall and the lower side wall of the middle part of the extruding cylinder are respectively provided with a cylindrical exhaust part and a drainage part, the heat insulation cylinder is formed by splicing an upper shell and a lower shell, the longitudinal sections of the upper shell and the lower shell are respectively penetrated by a first connecting hole and a second connecting hole, and the exhaust part and the drainage part are respectively inserted and fixed in the first connecting hole and the second connecting hole in a tight fit manner. Although this extruder has the convenient advantage of equipment, but the inside raw materials of the device gradually changes into high bullet state from the glassy state, becomes the viscous state at last, reaches complete plasticization, extrudes the film from the die head, after accomplishing the work, because of the raw materials plasticization back viscidity is great to still there is a small amount of viscous state's residual material on the feeding screw rod, if not in time clear up the residual material, can lead to residual material will overheat decomposition, causes the whole material to become the waste material even, thereby increases manufacturing cost, reduces machine life.

Disclosure of Invention

In order to overcome the defects in the prior art, the problems that materials are plasticized into a bulk shape after being mixed by an extrusion cylinder, the materials contain an elastomer, the viscosity is high after plasticizing, more or less part of each pass of materials are adhered to the surface of a screw blade, the residual materials are overheated and decomposed, the whole pass of materials become waste even, the production cost is increased and the service life of a machine is reduced are solved.

The technical scheme adopted for solving the technical problems is as follows: the invention relates to an EVA plastic film extruder, which comprises a bracket, an extrusion cylinder, a first motor, a second motor, a feed cylinder and a controller, wherein the bracket is arranged on the bracket; the extruding cylinder is fixedly connected above the bracket; the screw rod is rotationally connected with the extrusion cylinder; the extending end of the first motor is fixedly connected with a screw rod in a rotating way; the second motor is fixedly connected to the side wall of one side of the extrusion cylinder, which is close to the feeding cylinder; the feeding cylinder is fixedly connected above one side of the extruding cylinder, which is close to the first motor; a first groove is formed in the extrusion cylinder above the screw; the first groove is rotationally connected with a driving gear; 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 plurality of second bearing outer rings are fixedly connected with the side walls at the two sides of the first groove respectively; a rotating belt is 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; the method comprises the steps of carrying out a first treatment on the surface of the The outer surface of the rotating belt is uniformly and fixedly connected with a plurality of first fixing blocks; elastic rubber is fixedly connected to the surface of the first fixed block; the surface of the elastic rubber is fixedly connected with a stop block; the stop block contour is attached to the screw surface contour; a chute is arranged below the first groove; the stop block extends out of the sliding groove and is attached to the surface of the screw; the extrusion cylinder is provided with a second groove at the left side of the rotary belt; a sliding plate is arranged above the second groove; the sliding plate is elastically connected with the second groove through a first spring; the sliding plate is designed on the upper surface of one end close to the rotating belt in an arc shape; the extrusion cylinder is provided with a third groove on the right side of the rotating belt; the third groove is designed to incline by 55 degrees from the horizontal direction to the lower part of the inner part of the first groove; the third groove is elastically connected with a scraping block through a second spring; the scraping block is attached to the rotary belt at one end close to the rotary block; the first motor and the second motor are controlled by a controller; the extrusion cylinder is formed by welding after being spliced by two sections of symmetrical semi-extrusion cylinders; an inductor is fixedly connected to a first fixed block of the first contact sliding plate when the rotating belt rotates anticlockwise; the inner wall of the chute is fixedly connected with the first receiver at one side close to the first spring; the upper surface of the scraping block is fixedly connected with a second receiver.

When the rotary extrusion device is in operation, a plurality of sections of grooves are formed above the semi-extrusion charging barrel, a complete first groove, a complete second groove and a complete third groove are formed after the grooves are spliced, a first bearing, a plurality of second bearings and a rotary belt are correspondingly arranged on the side wall of the first groove of the first semi-extrusion charging barrel, the first bearing and the plurality of second bearing outer rings are fixedly connected with the inner wall of the first groove, the plurality of second bearings are correspondingly arranged on the side wall of the second semi-extrusion charging barrel, the outer rings of the second bearings are fixedly connected with the inner rings of the second bearing, a driven gear is fixedly connected on the second rotary shaft, a second motor is arranged on the side wall of the second semi-extrusion charging barrel, which is close to one side wall of the charging barrel, a through hole is formed, the first rotary shaft can rotate in the through hole, a driving gear is arranged at one end far away from the second motor, the driven gear is arranged on the inner wall of the second bearing, the first semi-extrusion charging barrel is correspondingly spliced with the second semi-extrusion charging barrel, the first rotary shaft is fixedly connected with the first rotary shaft, the driven gear is correspondingly arranged on the first rotary shaft, the driven gear is fixedly connected with the second bearing inner ring, the second rotary shaft is fixedly connected with the second bearing is correspondingly connected with the second bearing inner ring, the second rotary shaft is fixedly connected with the driven gear is correspondingly connected with the second bearing inner ring, and the other half of the rotary shaft is fixedly connected with the charging barrel, and the second rotary shaft is welded, and the other half of the rotary cylinder is completely;

after the standby device finishes extruding the viscous material, the controller continuously controls 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, and as one end of the first rotating shaft far away from the second motor is fixedly connected with the first bearing inner ring, the first bearing outer ring is fixedly connected with the side wall of the first groove, so that the first rotating shaft rotates, the first bearing outer ring does not move, and the inner ring rotates along with the first rotating shaft; the internal gear teeth of the rotary belt are meshed with the gear teeth of the driving gear and the gear teeth of the driven gear; the driving gear rotates and drives the rotating belt to rotate, the rotating belt drives the driven gears to rotate, so that the first fixing blocks rotate along with the rotating belt, when the first fixing blocks contact the upper surface of the sliding plate, the first fixing blocks continue to rotate along with the rotating belt, the first fixing blocks squeeze the upper surface of the sliding plate, so that one side, close to the rotating belt, of the sliding plate moves downwards to the first groove, one side, far from the rotating belt, moves upwards to the first groove, the first spring is in a stretched state, and the elastic rubber and the stop block rotate along with the first fixing blocks; when the rotary belt rotates anticlockwise, the first fixed block entering the inside of the chute rotates to the upper part of the screw rod through the chute, the first receiver fixedly connected to one side of the inner wall of the chute close to the first spring receives an inductor signal on the first fixed block entering the inside of the chute when the rotary belt rotates anticlockwise, at the moment, 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 for conveying raw materials moves towards the block, and because the block is attached to one side of the screw rod for conveying raw materials, after the block contacts the screw rod for conveying one side of raw materials, one side of the screw rod for conveying raw materials continues to rotate because the screw rod rotates along with the first motor, the baffle blocks are attached to and continuously rotate along with one surface of the screw rod for conveying raw materials, the baffle blocks drive the rotating belt to rotate, the rotating belt drives the rear first fixed blocks to rotate, the baffle blocks at the rear are attached to one surface of the screw rod for conveying raw materials, the plurality of baffle blocks scrape residual viscous fluid materials on one surface of the screw rod for conveying raw materials, when the rotating belt rotates anticlockwise, the first fixed block entering the inside of the chute moves to the scraping block, the second receiver on the scraping block receives an inductor signal on the first fixed block, so that the second receiver controls the second motor to operate, the driving gear is driven by the second motor to rotate, the scraping block extrudes the second spring when the first fixed block is driven by the rotating belt to contact the scraping block, the utility model provides a scraper blade, the scraper blade is fixed to the top of the sliding plate, the top of the sliding plate is fixed to the top of the sliding plate, make the viscous material get into the spout inside, when the rotating belt rotates, because of the scraper blade laminating rotating belt design, thereby make the rotating belt rotate, the scraper blade will strike off the material of the viscous material on the rotating belt surface, make the material follow the screw rod and rotate, when the dog moves to the sliding plate top, because of still there is a small amount of viscous material on the dog, the first fixed block contacts the sliding plate, the first fixed block rotates along with the rotating belt, make the sliding plate upper surface secondary strike off the dog, make the material remain in the sliding plate top, the back by the first fixed block that rear and rotating belt link firmly, the spout, the rotating belt surface and dog carry out the back of striking off, the controller control second motor drives the driving gear and rotates, the first motor drives the rotating belt and rotates the inside the rotating belt, the first motor rotates the first motor and the motor rotates the top of the motor, the first motor rotates the top of the cylinder and the first motor rotates the cylinder, the first motor rotates the top the cylinder rotates the top the material, the first motor rotates the top the cylinder and the cylinder rotates the material and the material is avoided when the thermal efficiency is improved, and the thermal and 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 sliding plate is in operation, the rotating belt drives the first fixed block to rotate, when the first fixed block is operated to the upper side of the sliding plate, the sliding plate is extruded by the stop block along with the rotating belt, so that the sliding plate moves to the lower side in the second groove near one end of the rotating belt, the stop block is attached to the sliding plate to move, the elastic rubber is distorted, and a plurality of third springs are fixedly connected to the surface of the first fixed block; the other ends of the third springs are fixedly connected with the side walls of the check blocks, so that the check blocks cannot fall off from the surface of the elastic rubber, the surface of the screw is scraped better, the residual materials in the viscous state are effectively reduced, the residual materials in the extrusion barrel are remained inside, and the service life of the machine is prolonged.

Preferably, the rotating belt is fixedly connected with a second fixed block on the right side of the first fixed block; the second fixing block is of a triangular design.

During operation, the rotating belt drives the first fixed block to rotate, when the second fixed block contacts the scraping block, the triangular design is adopted due to the second fixed block, so that the scraping block is attached to the surface of the second fixed block to move, the scraping block is prevented from directly contacting the stop block, the stop block is prevented from falling off easily, 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 is enabled to rapidly and stably enter the first groove along with the first fixed block, the service life of a machine is further effectively prolonged, and the production rate is increased.

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

During operation, the rotating belt drives the first fixed block to rotate, when the first fixed block moves to the upper side of the sliding plate, the sliding plate is extruded by the check block along with the rotating belt, so that the sliding plate moves to the lower side in the second groove near one end of the rotating belt, one end of the rotating belt moves to the upper side in the second groove far away, and the sliding plate slides in the first groove better because of the corresponding design of the surface of one end of the rotating belt far away from the surface of the sliding plate and the left side of the first groove, so that the sliding plate slides to the upper side in the first groove more effectively when the check block contacts with the extruding sliding plate, the check block can smoothly enter the sliding groove, and the scraping efficiency of the check block on the surface of the screw rod is effectively improved.

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

During operation, when the dog moves to the inside top of first recess along with the rotation area, because of a plurality of third springs have linked firmly on first fixed block surface, third spring other end links firmly the dog lateral wall for the dog is kept away from elastic rubber one end and is contacted first recess inside upper surface, because of a plurality of lugs have evenly linked firmly on the inside upper surface of first recess, thereby make dog contact lug lower extreme, and rotate along with the rotation area, the lug below strikes off the dog, and the lug strikes off the back completely to the dog, because of third spring elastic connection dog, when making the dog contact first recess upper surface once more, the vibrations that the dog produced can shake down the residue of dog surface adhesion, the residual material that falls on the rotation area rotates along with the rotation area and is scraped by the sliding plate and strike off the piece, make the residual material fall into in the extrusion feed cylinder along with the screw rod.

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

During operation, when the dog moves to the inside top of first recess along with the rotation area, dog contact lug lower extreme, because of lug lower surface with be close to the wave design of striking off piece one side surface intersection department, and rotate along with the rotation area, the lug below strikes off the dog, effectually avoid because of the lug lower surface with be close to striking off piece one side intersection department and be parallel line, and lead to the lug that is close to striking off piece one side to strike off more to the dog surface, increased the frictional force between lug and the dog to lead to dog and elastic rubber disconnection.

The beneficial effects of the invention are as follows:

1. according to the EVA plastic film extruder disclosed by the invention, 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, and the scraping block is prevented from breaking the connection between the first fixed block and the stop block, so that the stop block can quickly and stably enter the first groove along with the first fixed block, the service life of the extruder is further effectively prolonged, and the production rate is increased.

2. According to the EVA plastic film extruder disclosed by the invention, the lug and the baffle block are arranged, so that the baffle block can be scraped under the lug, and after the lug completely scrapes the baffle block, when the baffle block contacts the upper surface of the first groove again, the vibration generated by the baffle block can shake off residues adhered to the surface of the baffle 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 rotate along with the screw rod.

3. According to the EVA plastic film extruder disclosed by the invention, by arranging the sliding plate, the stop block and the rotating belt, when the first fixed block is operated above the sliding plate, the sliding plate is designed to be away from the surface of one end of the rotating belt and corresponds to the surface of the left side of the first groove, so that the sliding plate can better slide in the first groove, and when the stop block contacts and extrudes the sliding plate, the sliding plate can more effectively slide to the upper part in the first groove, so that 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 is further described below with reference to the accompanying drawings.

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

FIG. 2 is a front view of an extrusion barrel of the present invention in semi-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 barrel at the second motor of FIG. 1;

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

in the figure: the device comprises a bracket 1, a charging barrel 2, a first motor 3, a second motor 4, a charging 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 chute 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 bump 33.

Detailed Description

The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

As shown in fig. 1 to 5, the EVA plastic film extruder of the present invention includes a bracket 1, an extrusion cylinder 2, a first motor 3, a second motor 4, a feed cylinder 5 and a controller; the extruding cylinder 2 is fixedly connected above the bracket 1; the extruding cylinder 2 is rotationally connected with a screw rod 6; the extending end of the first motor 3 is fixedly connected with a screw rod 6 in a rotating way; the second motor 4 is fixedly connected to the side wall of the extrusion cylinder 2, which is close to one side of the feed cylinder 5; the upper part of one side, close to the first motor 3, of the extruding cylinder 2 is fixedly connected with a feeding cylinder 5; a first groove 11 is formed in the extrusion cylinder 2 above the screw rod 6; the first groove 11 is rotationally connected with a driving gear 12; 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 to 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 rotation shaft 16; two ends of the second rotating shaft 16 are fixedly connected with inner rings of two second bearings 17 respectively; the outer rings of the second bearings 17 are respectively fixedly connected with the side walls of the two sides of the first groove 11; 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; the outer surface of the rotating belt 18 is uniformly and fixedly connected with a plurality of first fixing blocks 19; the surface of the first fixed block 19 is fixedly connected with elastic rubber 21; a stop block 22 is fixedly connected to the surface of the elastic rubber 21; the contour of the stop block 22 is fit with the contour of the surface of the screw 6; a chute 23 is arranged below the first groove 11; the stop block 22 extends out of the sliding groove 23 to be attached to the surface of the screw rod 6; the extrusion cylinder 2 is provided with a second groove 24 at the left side of the rotary belt 18; 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 arc-shaped on the upper surface of one end close to the rotating belt 18; the extruding cylinder 2 is provided with a third groove 27 on the right side of the rotating belt 18; the third groove 27 is designed to incline 45 degrees from the horizontal direction to the lower part of the inner part of the first groove 11; a scraping block 29 is elastically connected in the third groove 27 through a second spring 28; the scraping block 29 is designed to be attached to the rotary belt 18 at one end close to the rotary block; the first motor 3 and the second motor 4 are controlled by a controller; the extrusion cylinder 2 is formed by welding after being spliced by two sections of symmetrical semi-extrusion cylinders 2; an inductor is fixedly connected to the first fixed block 19 of the first contact sliding plate 25 when the rotating belt 18 rotates anticlockwise; the inner wall of the chute 23 is fixedly connected with a first receiver at one side close to the first spring 26; a second receiver is fixedly connected to the upper surface of the scraping block 29.

During operation, a plurality of sections of grooves are formed in the upper part of the semi-extrusion charging barrel, a complete first groove 11, a complete second groove 24 and a complete third groove 27 are formed after the multi-section grooves are spliced, a first bearing 14, a plurality of second bearings 17 and a rotary belt 18 are correspondingly arranged on the side wall of the first groove 11 of the first semi-extrusion charging barrel, the first bearing 14 and the outer rings of the plurality of second bearings 17 are fixedly connected with the inner wall of the first groove 11, a plurality of second bearings 17 are correspondingly arranged on the side wall of the second semi-extrusion charging barrel, the outer rings of the second bearings 17 are fixedly connected with the inner rings of the second bearings 17, a driven gear 15 is fixedly connected on the second rotary shaft 16, a second motor 4 is arranged outside the second semi-extrusion charging barrel and is close to one side wall of the charging barrel 5, a through hole is formed in the side wall of the second semi-extrusion charging barrel, the first rotary shaft 13 can rotate in the through hole, a driving gear 12 is arranged at one end of the first rotary shaft 13 far from the second motor 4, a driven gear 15 is arranged on the inner wall of the second bearing 17, the second rotary shaft 15 is correspondingly arranged on the inner wall of the second bearing 17, the second semi-extrusion charging barrel is fixedly connected with the inner ring 13, and the other half bearing 14 is fixedly connected with the inner ring of the second rotary shaft 16 correspondingly, and the outer ring of the second rotary shaft 2 is fixedly connected with the second bearing 16, the second rotary shaft 2 is welded, and the other half of the rotary shaft is fixedly connected with the inner ring of the second bearing 2, and the inner ring is fixedly connected with the second rotary shaft and is fixedly connected with the rotary shaft;

after the standby device finishes extruding the viscous material, 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 one end of the first rotating shaft 13 far away from the second motor 4 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, so that the first rotating shaft 13 rotates, the outer ring of the first bearing 14 does not move, and the inner ring of the first bearing rotates along with the first rotating shaft 13; because the internal teeth of the rotating belt 18 and the teeth of the driving gear 12 and the teeth of the driven gear 15 mesh with each other; 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 fixed blocks 19 rotate along with the rotating belt 18, when the first fixed blocks 19 contact the upper surface of the sliding plate 25, the first fixed blocks 19 continue to rotate along with the rotating belt 18, the first fixed blocks 19 press the upper surface of the sliding plate 25, so that one side of the sliding plate 25 close to the rotating belt 18 moves downwards to the first groove 11, the other side away from the rotating belt 18 moves upwards to the first groove 11, the first springs 26 are in a stretched state, and the elastic rubber 21 and the stop blocks 22 rotate along with the first fixed blocks 19; so that the block 22 slides completely in the chute 23, the sliding plate 25 is reset, the first spring 26 is reset, when the rotating belt 18 rotates anticlockwise, the first fixed block 19 which enters the chute 23 is rotated to the upper part of the screw rod 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 chute 23 near the first spring 26 receives the sensor signal on the first fixed block 19 which enters the chute 23 when the rotating belt 18 rotates anticlockwise, at the moment, the first receiver controls the second motor 4 to stop rotating, the screw rod 6 rotates clockwise because the rotating speed of the first motor 3 is unchanged, so that one surface of the screw rod 6 for conveying raw materials moves towards the block 22, and because the block 22 is attached to one surface of the screw rod 6 for conveying raw materials, the block 22 contacts the screw rod 6 for conveying raw materials, the surface of the screw rod 6 for conveying raw materials continues to rotate due to the fact that the screw rod 6 rotates along with the first motor 3, the stop block 22 is attached to and continuously rotates along with the surface of the screw rod 6 for conveying raw materials, the stop block 22 drives the rotating belt 18 to rotate, the rotating belt 18 drives the rear first fixed block 19 to rotate, the rear stop block 22 is attached to the surface of the screw rod 6 for conveying raw materials, the plurality of stop blocks 22 scrape off viscous state materials remained on the surface of the screw rod 6 for conveying raw materials, when the rotating belt 18 rotates anticlockwise, the first fixed block 19 entering the chute 23 moves to the scraping block 29, at the moment, the second receiver on the scraping block 29 receives an inductor 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, 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 blocks 29, when the rotating belt 18 drives the first fixed blocks 19 to contact the scraping blocks 29, the scraping blocks 29 squeeze the second springs 28 at the moment, so that the scraping blocks 29 move towards the inside of the third grooves 27, the second springs 28 compress, the scraping blocks 29 contact one end close to the rotating belt 18 and scrape the stop blocks 22, the stop blocks 22 rotate along with the rotating belt 18, the stop blocks 22 enter the inside of the first grooves 11 due to the fact that the stop blocks 22 are fixedly connected with the first fixed blocks 19 through the elastic rubber 21, and viscous materials enter the sliding grooves 23 due to the fact that the inner screw 6 of the extruding cylinder 2 rotates, when the rotating belt 18 rotates, the scraping blocks 29 are attached to the rotating belt 18 due to the fact that the scraping blocks 29 are attached to the design of the rotating belt 18, so that when the rotating belt 18 rotates, the scraping blocks 29 scrape viscous materials on the surface of the rotating belt 18, the materials rotate along with the rotation of the screw 6, when the stop block 22 moves above the sliding plate 25, as a small amount of viscous material still exists 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 scrapes the stop block 22 for the second time, the material remains above the sliding plate 25, the first fixed block 19 fixedly connected with the rotating belt 18 at the rear scrapes the residual material, after scraping the screw 6, the chute 23, the surface of the rotating belt 18 and the stop block 22 for a plurality of 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, the rotating belt 18 drives the plurality of first fixed blocks 19 to rotate above the rotating belt 18, the controller controls the second motor 4 to stop rotating, the first motor 3 to stop rotating, and cleaning the screw 6, the first groove 11 and the inside of the chute 23 is completed, the residual material in a viscous state is effectively prevented from being stuck on the surface of the screw rod 6, so that the phenomenon that the residual material is overheated and decomposed when the next extrusion cylinder 2 is heated and operated, the whole batch of material is wasted is effectively avoided, the service life of the machine is effectively prolonged, and the working efficiency of the machine is effectively improved.

As an embodiment of the present invention, the surface of the first fixing 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 walls of the stop block 22.

When the rotary belt 18 works, the first fixed block 19 is driven to rotate, when the first fixed block 19 moves above the sliding plate 25, the sliding plate 25 is rotated along with the rotary belt 18, the stop block 22 extrudes the sliding plate 25, so that the sliding plate 25 moves towards the lower part inside the second groove 24 at one end close to the rotary belt 18, the stop block 22 is attached to the sliding plate 25 to move, the elastic rubber 21 is distorted, and a plurality of third springs 31 are fixedly connected to the surface of the first fixed block 19; 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 rod 6 is scraped better, the residues in a viscous state are effectively reduced, residues in the extruding cylinder 2 are effectively reduced, and the service life of the machine is prolonged.

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

During operation, the rotating belt 18 drives the first fixed block 19 to rotate, when the second fixed block 32 contacts the scraping block 29, the triangular design is adopted due to the second fixed block 32, so that the scraping block 29 is attached to the surface of the second fixed block 32 to move, the scraping block 29 is prevented from directly contacting the stop block 22, the stop block 22 is prevented from falling easily, the second fixed block 32 can effectively prevent the scraping block 29 from contacting the third spring 31, the scraping block 29 is prevented from breaking the connection between the first fixed block 19 and the stop block 22, and the stop block 22 is enabled to quickly and stably enter the first groove 11 along with the first fixed block 19, so that the service life of a machine is effectively prolonged, and the production rate is increased.

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 far from the rotating belt 18.

When the sliding plate 25 is pressed by the sliding plate 25, the sliding plate 25 can slide more effectively to the upper part in the first groove 11, so that the sliding plate 22 can smoothly enter the sliding groove 23, and the scraping efficiency of the sliding plate 22 on the surface of the screw 6 is effectively improved.

As an embodiment of the present invention, the plurality of bumps 33 are uniformly fixed on the inner upper surface of the first groove 11.

When the stopper 22 moves to the upper part inside the first groove 11 along with the rotating belt 18, as the surface of the first fixing 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 walls of the stopper 22, one ends of the stopper 22 far away from the elastic rubber 21 are contacted with the upper surface inside the first groove 11, and as a plurality of lugs 33 are uniformly and fixedly connected with the upper surface inside the first groove 11, the stopper 22 is contacted with the lower end of the lugs 33 and rotates along with the rotating belt 18, the lower part of the lugs 33 scrapes the stopper 22, and after the lugs 33 completely scrape the stopper 22, the third springs 31 are elastically connected with the stopper 22, so that when the stopper 22 contacts the upper surface of the first groove 11 again, residues adhered to the surface of the stopper 22 can be shaken off, and 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 rotation of the rotating belt 18, so that the residues fall into the extruding cylinder 2 and rotate along with the screw 6.

As an embodiment of the invention, the projection 33 has a wave-like design at the intersection of the lower surface with the surface of the scraper block 29.

When the dog 22 moves to the upper part inside the first groove 11 along with the rotating belt 18, the dog 22 contacts with the lower end of the lug 33, the lug 22 is scraped by the lower part of the lug 33 due to the wavy design at the intersection of the lower surface of the lug 33 and the surface of one side close to the scraping block 29 and the rotation along with the rotating belt 18, so that the situation that the lug 33 of one side close to the scraping block 29 scrapes more on the surface of the dog 22 due to the fact that the intersection of the lower surface of the lug 33 and one side close to the scraping block 29 is parallel is effectively avoided, the friction force between the lug 33 and the dog 22 is increased, and the dog 22 is disconnected with the elastic rubber 21.

The specific working procedure is as follows:

after the standby device finishes extruding the viscous material, 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, so that the first rotating shaft 13 rotates, the outer ring of the first bearing 14 does not move, and the inner ring of the first bearing 14 rotates along with the first rotating shaft 13; because the internal teeth of the rotating belt 18 and the teeth of the driving gear 12 and the teeth of the driven gear 15 mesh with each other; the driving gear 12 rotates and drives the rotating belt 18 to rotate, and the rotating belt 18 drives the driven gears 15 to rotate, so that the 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, the first fixed block 19 continuously rotates along with the rotating belt 18, and the first fixed block 19 presses the upper surface of the sliding plate 25, so that one side of the sliding plate 25, which is close to the rotating belt 18, moves below the first groove 11, one side, which is far from the rotating belt 18, moves above the first groove 11, the first spring 26 is in a stretched state, and the elastic rubber 21 and the stop block 22 rotate along with the first fixed block 19; the sliding plate 25 is extruded by the stop block 22, and the sliding plate 25 is correspondingly designed with the left side surface of the first groove 11 at the surface far away from one end of the rotating belt 18, so that the sliding plate 25 can better slide in the first groove 11, when the stop block 22 contacts the extruded sliding plate 25, the sliding plate 25 can more effectively slide to the upper part in the first groove 11, so that the stop block 22 can smoothly enter the chute 23, the scraping efficiency of the stop block 22 on the surface of the screw rod 6 is effectively improved, and when the stop block 22 is attached to the sliding plate 25 to move, the elastic rubber 21 is distorted, and a plurality of third springs 31 are fixedly connected with the surface of the first fixed block 19; 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 is scraped better, the residues of viscous state residues in the extrusion cylinder 2 are effectively reduced, and the service life of the machine is prolonged;

when the stop 22 slides completely in the chute 23, the sliding plate 25 is reset, the first spring 26 is reset, when the rotating belt 18 rotates anticlockwise, the first fixed block 19 which enters the chute 23 is rotated to the upper part of the screw rod 6 through the chute 23, when the first fixed block 19 at the rear part is in the first groove 11, the first receiver fixedly connected to one side of the chute 23 near the first spring 26 receives the sensor signal on the first fixed block 19 which enters the chute 23 when the rotating belt 18 rotates anticlockwise, at the moment, the first receiver controls the second motor 4 to stop rotating, the screw rod 6 rotates clockwise because the rotating speed of the first motor 3 is unchanged, so that one side of the screw rod 6 for conveying raw materials faces the stop 22, and because the stop 22 is in fit with one side of the screw rod 6 for conveying raw materials, so that the stop 22 contacts the screw rod 6 for conveying raw materials, the surface of the screw rod 6 for conveying raw materials continues to rotate due to the fact that the screw rod 6 rotates along with the first motor 3, the stop block 22 is attached to and continuously rotates along with the surface of the screw rod 6 for conveying raw materials, the stop block 22 drives the rotating belt 18 to rotate, the rotating belt 18 drives the rear first fixed block 19 to rotate, the rear stop block 22 is attached to the surface of the screw rod 6 for conveying raw materials, the plurality of stop blocks 22 scrape off viscous state materials remained on the surface of the screw rod 6 for conveying raw materials, when the rotating belt 18 rotates anticlockwise, the first fixed block 19 entering the chute 23 moves to the scraping block 29, at the moment, the second receiver on the scraping block 29 receives an inductor 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, the driving gear 12 drives the rotating belt 18 to rotate, the rotating belt 18 drives the first fixed blocks 19 to move towards the scraping blocks 29, so that one surface of the screw 6 for conveying raw materials is always attached to the stop block 22, and the surface of the screw 6, adhered by the stop block 22, is effectively improved to clean the raw materials;

when the second fixed block 32 contacts the scraping block 29, the second fixed block 32 is designed in a triangle, so that the scraping block 29 is attached to the surface of the second fixed block 32 to move, the scraping block 29 is prevented from directly contacting the stop block 22, the stop block 22 is prevented from falling off easily, at the moment, the scraping block 29 extrudes the second spring 28, the scraping block 29 moves towards the inside of the third groove 27, the second spring 28 is compressed, the second fixed block 32 can effectively prevent the scraping block 29 from contacting the third spring 31, the scraping block 29 is prevented from breaking the connection between the first fixed block 19 and the stop block 22, the stop block 22 is enabled to enter the inside of the first groove 11 quickly and stably, the service life of the machine is further effectively prolonged, the production rate is increased, and when the rotating belt 18 rotates, the scraping block 29 is attached to the rotating belt 18 to rotate, the scraping block 29 scrapes the sticky material on the surface of the rotating belt 18, and the screw rod 6 rotates along with the rotating belt 18;

when the stop block 22 moves to the upper part inside the first groove 11 along with the rotating belt 18, as the surface of the first fixing 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 walls of the stop block 22, so that one end of the stop block 22 far away from the elastic rubber 21 contacts the upper surface inside the first groove 11, as the upper surface inside the first groove 11 is uniformly and fixedly connected with a plurality of protruding blocks 33, at the moment, the stop block 22 contacts the lower end of the protruding blocks 33, as the lower surface of the protruding blocks 33 is in wave-shaped design with the surface close to one side of the scraping block 29 and rotates along with the rotating belt 18, the stop block 22 is scraped under the protruding blocks 33, and after the stop block 22 is completely scraped by the protruding blocks 33, as the third springs 31 are elastically connected with the stop block 22, when the stop block 22 contacts the upper surface of the first groove 11 again, the residual adhered to the surface of the stop block 22 is shaken off, and the residual materials 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 materials fall into the extruding cylinder 2 along with the screw 6;

when the stop block 22 moves to the upper part of the sliding plate 25, as 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 off for the second time on the upper surface of the sliding plate 25, the materials are remained above the sliding plate 25, the first fixed block 19 fixedly connected with the rotating belt 18 at the rear is used for scraping off the residual materials, after the screw 6, the sliding groove 23, the surface of the rotating belt 18 and the stop block 22 are scraped off for a plurality of times, the controller controls the second motor 4 to drive the driving gear 12 to drive the rotating belt 18 to operate, and when the rotating belt 18 drives the plurality of first fixed blocks 19 to operate to the upper part of the rotating belt 18, the controller controls the second motor 4 to stop rotating, so that the cleaning of the screw 6, the first groove 11 and the sliding groove 23 is completed, the residual materials in the viscous state are effectively prevented from being stuck on the surface of the screw 6, the residual materials are effectively prevented from being overheat and decomposed when the next material extruding cylinder 2 is heated and operated, the service life of the machine is improved, and the service life of the machine is further improved.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An EVA plastic film extruder which is characterized in that: comprises a bracket (1), an extrusion cylinder (2), a first motor (3), a second motor (4), a feeding cylinder (5) and a controller; the extruding cylinder (2) is fixedly connected above the bracket (1); the extruding cylinder (2) is rotationally connected with a screw (6); the extending end of the first motor (3) is fixedly connected with a screw rod (6) in a rotating way; the second motor (4) is fixedly connected to the side wall of the extrusion charging barrel (2) close to one side of the charging barrel (5); the feeding cylinder (5) is fixedly connected above one side, close to the first motor (3), of the extruding cylinder (2); a first groove (11) is formed in the extrusion cylinder (2) above the screw (6); a driving gear (12) is rotationally connected to 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 to 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 inner rings of 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); the outer surface of the rotating belt (18) is uniformly and fixedly connected with a plurality of first fixing blocks (19); the surface of the first fixed block (19) is fixedly connected with elastic rubber (21); a stop block (22) is fixedly connected to the surface of the elastic rubber (21); the outline of the stop block (22) is attached to the outline of the surface of the screw (6); a chute (23) is formed below the first groove (11); the stop block (22) extends out of the sliding groove (23) to be attached to the surface of the screw (6); the extrusion cylinder (2) is provided with a second groove (24) at the left side of the rotary belt (18); 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 in arc-shaped design near the upper surface of one end of the rotating belt (18); the extruding cylinder (2) is provided with a third groove (27) on the right side of the rotating belt (18); the third groove (27) is designed to incline by 45 degrees from the horizontal direction to the lower part in the first groove (11); a scraping block (29) is elastically connected in the third groove (27) through a second spring (28); the scraping block (29) is designed by attaching a rotating belt (18) to one end close to the rotating block; the first motor (3) and the second motor (4) are controlled by a controller; the extrusion cylinder (2) is formed by welding after being spliced by two sections of symmetrical semi-extrusion cylinders (2); an inductor is fixedly connected to a first fixed block (19) of the first contact sliding plate (25) when the rotating belt (18) rotates anticlockwise; the inner wall of the chute (23) is fixedly connected with a first receiver at one side close to the first spring (26); the upper surface of the scraping block (29) is fixedly connected with a second receiver;

a plurality of convex blocks (33) are uniformly and fixedly connected to the upper surface of the inner part of the first groove (11);

the intersection of the lower surface of the lug (33) and the surface of one side close to the scraping block (29) is wave-shaped.

2. An EVA plastic film extruder as defined in 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 walls of the stop blocks (22).

3. An EVA plastic film extruder as defined in claim 1, wherein: the rotating belt (18) is fixedly connected with a second fixed block (32) on the right side of the first fixed block (19); the second fixing block (32) is of triangular design.

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