CN113021839A

CN113021839A - PET (polyethylene terephthalate) foaming material molding extruder for automotive interior and using method thereof

Info

Publication number: CN113021839A
Application number: CN202110293840.1A
Authority: CN
Inventors: 李赛; 赵远
Original assignee: Jiangsu Welke Polymer Material Co ltd
Current assignee: Jiangsu Welke Polymer Material Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-06-25

Abstract

The invention discloses a PET (polyethylene terephthalate) foaming material molding extruder for automotive interiors and a using method thereof, and belongs to the technical field of extruders. PET expanded material shaping extruder for automotive interior and application method thereof, including the box, still include: two groups of preheating boxes which are fixedly connected to the box body; the heating pipelines are fixedly connected to the two groups of preheating boxes; one end of the heat transfer pipe is fixedly connected to the heating pipeline, and the other end of the heat transfer pipe is wound on the preheating box and used for transferring heat in the heating pipeline into the preheating box; the opening and closing assembly is connected to the two groups of preheating boxes; according to the invention, the raw materials are controlled to be preheated separately, the preheating time is prolonged, the surplus heat in the heating pipeline is utilized for preheating, and the direction of the heat in the heat transfer pipe is controlled, so that when the raw materials exist in the preheating box, the raw materials can be heated intensively by the heat, the preheating efficiency is accelerated, the preheating effect is good, and the molding quality is good.

Description

PET (polyethylene terephthalate) foaming material molding extruder for automotive interior and using method thereof

Technical Field

The invention relates to the technical field of extruders, in particular to a PET (polyethylene terephthalate) foaming material molding extruder for automotive interior and a using method thereof.

Background

PET is a milky white or pale yellow highly crystalline polymer which is smooth in surface and very glossy; and has excellent creep resistance, fatigue resistance and friction resistance, and is particularly suitable for use as a material for automobile interior trim.

In the automobile interior ornament class, an interior ornament made of a PET plastic material is used, during processing, raw materials are placed into a feeding box, are preheated and heated to be melted and are finally extruded out of a forming opening, but when an existing forming machine works, the preheating efficiency is low, so that parts of the raw materials are not melted, and the quality of a finally formed product is low.

Disclosure of Invention

The invention aims to solve the problem that when a forming machine works, the preheating efficiency is low, so that part of raw materials is not dissolved, and the quality of a finally formed product is low.

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

PET expanded material shaping extruder for automotive interior, including the box, still include: two groups of preheating boxes which are fixedly connected to the box body; the heating pipelines are fixedly connected to the two groups of preheating boxes; one end of the heat transfer pipe is fixedly connected to the heating pipeline, and the other end of the heat transfer pipe is wound on the preheating box and used for transferring heat in the heating pipeline into the preheating box; the opening and closing assembly is connected to the two groups of preheating boxes and is used for controlling the falling sequence of the raw materials in the preheating boxes; the extrusion assembly is connected to the heating pipeline and is used for extruding and molding the raw materials; the closing assembly is connected to the heating pipeline and used for preventing flash; and the driving assembly is connected to the extrusion assembly and is used for driving the extrusion assembly and the closing assembly to work.

In order to facilitate the control of the order of communication between the two preheating chambers and the heating pipeline, preferably, the opening and closing assembly comprises: smooth chamber pole, third motor, smooth chamber pole runs through fixed connection on the preheating cabinet, smooth chamber pole and preheating cabinet run through department and preheating cabinet intercommunication, fixedly connected with third spring in the smooth chamber pole, the first slider of one end fixedly connected with of smooth chamber pole is kept away from to the third spring, first slider and one of them group preheating cabinet phase-match, the one end fixedly connected with connecting rod of third spring is kept away from to first slider, the one end fixedly connected with second slider of first slider is kept away from to the connecting rod, the second slider and another group preheating cabinet phase-match, the equal sliding connection of first slider, second slider is in smooth chamber pole, the one end fixedly connected with haulage rope of connecting rod is kept away from to the second slider, third motor fixed connection is on the box, the one end fixed connection that the second slider was kept away from to the haulage rope is on third motor output.

In order to control the raw material to enter the preheating box, preferably, a first control assembly is arranged on the box body, and the first control assembly comprises: the preheating device comprises a first three-way pipe, a second gear, a first control valve and a rack, wherein a discharging box is fixedly connected to the box body, the first three-way pipe is fixedly connected to the discharging box and the two preheating boxes respectively, the first control valve is rotatably connected to the first three-way pipe, the first control valve is matched with the first three-way pipe, the second gear is rotatably connected to a sliding cavity rod, the first control valve and the second gear are connected through a first belt, the rack is fixedly connected to a connecting rod, and the rack is meshed with the second gear.

In order to enhance the squeezing effect, it is preferable that the squeezing assembly includes: the extrusion chamber post, the first spring of extrusion chamber post interior symmetry fixedly connected with, the one end fixedly connected with extrusion piece of extrusion chamber post is kept away from to first spring, fixedly connected with becomes the mouth on the extrusion chamber post, fixedly connected with flexure strip on the shaping mouth, fixedly connected with shelves pole on the flexure strip.

In order to prevent flash and air leakage when extruding the raw material, it is preferable that the closure assembly comprises: the sliding cavity rod is fixedly connected to the heating pipeline, one end of the sliding cavity rod is led into the heating pipeline, a second spring is fixedly connected to the inside of the sliding cavity rod, a third sliding block is fixedly connected to one end, far away from the sliding cavity rod, of the second spring and is connected to the inside of the sliding cavity rod in a sliding mode, and the third sliding block is matched with the heating pipeline.

In order to facilitate the driving of the squeezing assembly and the closing assembly, preferably, the driving assembly includes: the inflator pump is fixedly connected to the box body, an air pipe is fixedly connected to the inflator pump, and one end, far away from the inflator pump, of the air pipe is respectively led to two ends of the sliding cavity rod and two ends of the extrusion cavity column.

In order to improve the preheating speed and effect, preferably, the heat transfer pipe is fixedly connected with a second three-way pipe, a second control valve is rotatably connected in the second three-way pipe, the second control valve is connected with a second gear through a second belt, and the second control valve is matched with the second three-way pipe.

In order to improve the contact area between the raw materials and heat, the discharging box is fixedly connected with a first motor, the discharging box is internally and rotatably connected with two groups of rollers which are matched, the rollers are fixedly connected with extrusion teeth, the output end of the first motor and one group of rollers are fixedly connected with first gears, and the first gears are meshed.

In order to improve and melt speed and effect, preferentially, fixedly connected with second motor on the box, the heating pipeline internal rotation is connected with the stirring leaf, second motor pass through the third belt and link to each other.

Compared with the prior art, the invention provides the PET foaming material molding extruder for the automotive interior and the using method thereof, and the PET foaming material molding extruder has the following beneficial effects:

the invention increases the preheating time by controlling the raw materials to be preheated separately, simultaneously utilizes surplus heat in the heating pipeline to preheat, and controls the direction of the heat in the heat transfer pipe, so that when the raw materials exist in the preheating box, the heat can be concentrated to heat the raw materials, the preheating efficiency is accelerated, the preheating effect is good, and the forming quality is good.

Drawings

FIG. 1 is a schematic structural diagram of a PET foaming material molding extruder for automobile interior decoration and a method for using the same according to the present invention;

FIG. 2 is a schematic view of the structure A in FIG. 1 of a PET foaming material molding extruder for automobile interior decoration according to the present invention;

FIG. 3 is a schematic structural view of a PET foaming material molding extruder for automobile interior according to the present invention, shown as B in FIG. 1;

FIG. 4 is a schematic structural view of a PET foaming material molding extruder for automobile interior according to the present invention, in FIG. 1, C;

FIG. 5 is a schematic structural view of a PET foaming material molding extruder for automobile interior, shown in FIG. 4 and indicated by D;

FIG. 6 is a schematic structural view of E in FIG. 1 of a PET foaming material molding extruder for automobile interior according to the present invention;

FIG. 7 is a schematic structural view of a PET foaming material molding extruder for automobile interior, shown in FIG. 6 and indicated by F;

FIG. 8 is a schematic structural view of a PET foaming material molding extruder for automobile interior in FIG. 1G according to the present invention;

FIG. 9 is a schematic structural view of a first control valve of a PET foaming material molding extruder for automobile interior decoration according to the present invention;

FIG. 10 is a schematic structural view of a second gear of the PET foam molding extruder for automobile interior parts according to the present invention;

FIG. 11 is a partial perspective view of a PET foaming material molding extruder for automobile interior according to the present invention.

In the figure: 1. a box body; 101. a material placing box; 1011. a first motor; 1013. a first gear; 1014. a drum; 1015. extruding teeth; 102. a first three-way pipe; 1021. a first control valve; 103. a first belt; 1031. a second control valve; 104. a preheating box; 1041. a heat transfer tube; 1042. a discharge port; 2. a sliding cavity rod; 201. a first slider; 202. a connecting rod; 203. a second slider; 204. a second gear; 2051. a second belt; 206. a rack; 3. a second motor; 301. a third belt; 302. stirring blades; 4. heating the pipeline; 5. extruding the cavity column; 501. a first spring; 502. extruding the block; 503. a sliding cavity rod; 5031. a second spring; 5032. a third slider; 6. an inflator pump; 601. an air tube; 7. forming a mold opening; 701. a gear lever; 702. an elastic sheet; 8. a second three-way pipe; 9. a third motor; 901. a hauling rope; 10. and a third spring.

Detailed Description

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

Example 1:

referring to fig. 1 to 11, the PET foam molding extruder for automotive interiors includes a case 1, and further includes: two groups of preheating boxes 104 fixedly connected to the box body 1; the first control component is connected to the preheating box 104 and is used for controlling the falling direction of the raw materials; the heating pipelines 4 are fixedly connected to the two groups of preheating boxes 104; a heat transfer pipe 1041 having one end fixedly connected to the heating pipe 4 and the other end looped around the preheating tank 104, for transferring heat in the heating pipe 4 to the preheating tank 104; the opening and closing components are connected to the two groups of preheating boxes 104 and are used for controlling the falling sequence of the raw materials in the preheating boxes 104; the extrusion assembly is connected to the heating pipeline 4 and is used for extruding and molding the raw materials; the closing assembly is connected to the heating pipeline 4 and used for preventing flash; the driving assembly is connected to the extrusion assembly and is used for driving the extrusion assembly and the closing assembly to work;

the heating pipeline 4 is electrified to enable the heating pipeline 4 to start to generate heat, then the heat in the heating pipeline 4 is conducted into the preheating box 104 through the heat transfer pipe 1041, the heat transfer pipe 1041 wraps the preheating box 104, the preheating effect is better, then the plastic raw material is put into the preheating box 104, and the preheating box 104 is used for preheating the plastic raw material processing to enable the plastic raw material to be plasticized and not melted;

then, by controlling the opening and closing assembly, the opening and closing assembly can control the opening and closing functions of the discharge ports 1042 of the two preheating boxes 104 to the heating pipeline 4, by the opening and closing assembly, the discharge ports 1042 of one group of preheating boxes 104 are opened, the plastic raw material falls into the heating pipeline 4, the discharge ports 1042 of the other group of preheating boxes 104 are in a closed state, the plastic raw material can be further preheated, the preheating is more sufficient, the discharge ports 1042 of one group of preheating boxes 104 are opened, the preheated plastic raw material enters the heating pipeline 4, the high temperature in the heating pipeline 4 melts the preheated plastic raw material, the melted plastic raw material enters the extruding assembly, then the driving assembly works, the driving assembly drives the extruding assembly and the closing assembly to work, the closing assembly seals the heating pipeline 4, and then the extruding assembly extrudes the melted plastic raw material, finishing the extrusion work;

after the extrusion operation is completed, the opening and closing assembly is driven again, another group of discharge ports 1042 of the preheating boxes 104 which preheat the plastic raw materials is opened, meanwhile, the discharge ports 1042 of the previous group of preheating boxes 104 are closed, then the plastic raw materials are put into the previous group of preheating boxes 104 again, the plastic raw materials are continuously preheated under the action of heat conduction of the heat transfer pipe 1041, the opened discharge ports 1042 enter the heating pipeline 4 under the influence of gravity, and then the driving assembly, the closing assembly and the extrusion assembly work again to perform the extrusion molding process again;

conduct preheating cabinet 104 in through the surplus heat with heating tube 4, separately preheat plastics raw materials again, not only can increase and preheat for a long time, make plastics raw materials can be by abundant preheating, make the plastify effect better, can also make full use of the heat in heating tube 4, recycle extrusion subassembly and drive assembly's cooperation simultaneously, make the extrusion effect better.

Example 2:

referring to fig. 1-11, substantially the same as in example 1, further: the subassembly that opens and shuts includes: a sliding cavity rod 2 and a third motor 9, wherein the sliding cavity rod 2 is fixedly connected to the preheating box 104 in a penetrating way, the penetrating part of the sliding cavity rod 2 and the preheating box 104 is communicated with the preheating box 104, a third spring 10 is fixedly connected in the sliding cavity rod 2, one end of the third spring 10 far away from the sliding cavity rod 2 is fixedly connected with a first sliding block 201, the first sliding block 201 is matched with one group of preheating boxes 104, one end of the first sliding block 201 far away from the third spring 10 is fixedly connected with a connecting rod 202, one end of the connecting rod 202 far away from the first sliding block 201 is fixedly connected with a second sliding block 203, the second sliding block 203 is matched with the other group of preheating boxes 104, the first sliding block 201, the second sliding blocks 203 are all connected in the sliding cavity rod 2 in a sliding mode, one ends, far away from the connecting rods 202, of the second sliding blocks 203 are fixedly connected with traction ropes 901, the third motor 9 is fixedly connected to the box body 1, and one ends, far away from the second sliding blocks 203, of the traction ropes 901 are fixedly connected to the output end of the third motor 9;

by starting the third motor 9, the third motor 9 rotates to wind the pulling rope 901 at the output end of the third motor 9, in the winding process, the pulling rope 901 pulls the second slider 203, the second slider 203 pulls the first slider 201 through the connecting rod 202, the first slider 201 pulls the third spring 10 again, when the pulling rope 901 pulls the second slider 203 to the end close to the sliding cavity rod 2 at one end of the third motor 9, the third motor 9 stops working, at this time, the second slider 203 opens the discharge port 1042 of one group of blocked preheating boxes 104, the first slider 201 blocks the discharge port 1042 of the other group of preheating boxes 104, one group of preheating boxes 104 with the discharge port 1042 opened, the preheated plastic raw material enters the heating pipe 4, after all the plastic raw material enters the heating pipe 4, the third motor 9 is started again to rotate reversely, and the pulling rope 901 wound at the output end of the third motor 9 before, the pulled pulling rope 901 can be loosened, the first sliding block 201 can pull the first sliding block 201 to move away from the third motor 9 under the influence of the resilience force of the third spring 10, the first sliding block 201 opens the discharge hole 1042 of the other group of preheating boxes 104, the second sliding block 203 blocks the discharge hole 1042 of one group of preheating boxes 104, and the plastic raw materials in the preheating boxes 104 with the discharge holes 1042 opened enter the heating pipeline 4 under the influence of gravity; reciprocating like this, can make plastic materials can both fill respectively in preheating cabinet 104 and preheat, and possess sufficient preheating time, make to preheat the effect better, and then make to melt the effect better, further messenger's shaping is of high quality.

Example 3:

referring to fig. 1-11, substantially the same as in example 1, further: be equipped with first control assembly on box 1, first control assembly includes: the preheating device comprises a first three-way pipe 102, a second gear 204, a first control valve 1021 and a rack 206, wherein a discharging box 101 is fixedly connected to a box body 1, the first three-way pipe 102 is respectively and fixedly connected to the discharging box 101 and two groups of preheating boxes 104, the first control valve 1021 is rotatably connected to the first three-way pipe 102, the first control valve 1021 is matched with the first three-way pipe 102, the second gear 204 is rotatably connected to a sliding cavity rod 2, the first control valve 1021 and the second gear 204 are connected through a first belt 103, the rack 206 is fixedly connected to a connecting rod 202, and the rack 206 is meshed with the second gear 204;

by feeding plastic raw materials into the material feeding box 101, when the right preheating box 104 is blocked by the second slider 203, the first slider 201 is far away from the material outlet 1042 of the left preheating box 104, that is, the left preheating box 104 is in a state of being communicated with the heating pipeline 4, the first control valve 1021 blocks the passage in the first three-way pipe 102 communicating the material feeding box 101 with the left preheating box 104, at this time, the plastic raw materials in the material feeding box 101 can only enter the right preheating box 104 through the first three-way pipe 102, and the preheated plastic raw materials in the left preheating box 104 enter the heating pipeline 4, during the melting process of the plastic raw materials by the heating pipeline 4, the plastic raw materials in the material feeding box 101 enter the right side, the right preheating box 104 is influenced by the heat transfer pipe 1041 to heat the right preheating box 104, when the heating pipeline 4 finishes working, the opening and closing assembly works, the material outlet 1042 of the left preheating box 104 is blocked by the first slider 201, the second slide block 203 is far away from the discharge hole 1042 of the right preheating box 104, the connecting rod 202 is close to the third motor 9 at the moment, the rack 206 on the connecting rod 202 moves the rack 206 to drive the second gear 204 to rotate along with the connecting rod 202, the second gear 204 drives the first belt 103 to enable the first control valve 1021 to rotate by 120 degrees, the first control valve 1021 blocks a channel in the first three-way pipe 102, which communicates the discharge box 101 with the right preheating box 104, after the preheating is completed through the preheating box 104 on one side, the plastic raw material in the box enters the heating pipeline 4, the discharge hole 1042 of the preheating box 104 on the other side is blocked, and the plastic raw material in the discharge box 101 is preheated in the preheating box 104;

further, the preheating and melting processes are more reasonable, and the raw materials are more fully preheated.

Example 4:

referring to fig. 1-11, substantially the same as in example 1, further: the extrusion assembly includes: the extrusion cavity column 5 is internally and symmetrically and fixedly connected with a first spring 501, one end, far away from the extrusion cavity column 5, of the first spring 501 is fixedly connected with an extrusion block 502, the extrusion cavity column 5 is fixedly connected with a forming port 7, the forming port 7 is fixedly connected with an elastic sheet 702, and the elastic sheet 702 is fixedly connected with a stop lever 701;

the raw material melted by the heating pipeline 4 enters the extrusion cavity column 5, the extrusion cavity column 5 is inflated through the work of the driving assembly, the gas pushes the extrusion blocks 502 to move, the extrusion blocks 502 on the two sides simultaneously extrude the raw material in the extrusion cavity column 5, and when the extrusion pressure is greater than the yield force of the elastic sheet 702, the raw material pushes the stop lever 701 away and is extruded from the forming opening 7.

Example 5:

referring to fig. 1-11, substantially the same as in example 1, further: the closure assembly includes: the sliding cavity rod 503 is fixedly connected to the heating pipeline 4, one end of the sliding cavity rod 503 leads to the inside of the heating pipeline 4, a second spring 5031 is fixedly connected to the inside of the sliding cavity rod 503, one end of the second spring 5031, which is far away from the sliding cavity rod 503, is fixedly connected with a third sliding block 5032, the third sliding block 5032 is slidably connected to the inside of the sliding cavity rod 503, and the third sliding block 5032 is matched with the heating pipeline 4;

by the operation of the driving assembly, the sliding cavity rod 503 is inflated, and the air pushes the third sliding block 5032 to approach the heating pipeline 4, so as to block the heating pipeline 4.

Example 6:

referring to fig. 1-11, substantially the same as in example 1, further: the drive assembly includes: the inflator pump 6 is fixedly connected to the box body 1, the inflator pump 6 is fixedly connected with an air pipe 601, and one end, far away from the inflator pump 6, of the air pipe 601 is respectively led to the two ends of the sliding cavity rod 503 and the two ends of the extrusion cavity column 5;

the inflator 6 is electrified to inflate the air pipe 601, and the air pipe 601 leads into the sliding cavity rod 503 and the extrusion cavity column 5.

Example 7:

referring to fig. 1-11, substantially the same as in example 1, further: a second three-way pipe 8 is fixedly connected to the heat transfer pipe 1041, a second control valve 1031 is rotatably connected to the second three-way pipe 8, the second control valve 1031 is connected with the second gear 204 through a second belt 2051, and the second control valve 1031 is matched with the second three-way pipe 8;

through the second control valve 1031, when the rack 206 moves, the second gear 204 is driven to rotate, and meanwhile, the second belt 2051 is driven to rotate, the second belt 2051 drives the second control valve 1031 to rotate by 240 degrees, because the diameter of the second control valve 1031 is smaller than that of the first control valve 1021, when the second gear 204 rotates by the same circumferential distance, the first control valve 1021 rotates by 120 degrees, the second control valve 1031 rotates by 240 degrees, when the first control valve 1021 makes the material discharge box 101 and the right preheating box 104 communicate with each other, the second control valve 1031 also makes the heat transfer pipe 1041 communicate with the right preheating box 104, and simultaneously blocks the heat transfer pipe 1041 and the left preheating box 104, so that heat is prevented from entering the left preheating box 104 without raw materials, and further, the heat in the heating pipe 4 can be fully and efficiently utilized through the second control valve 1031 to heat the preheating box 104.

Example 8:

referring to fig. 1-11, substantially the same as in example 1, further: a first motor 1011 is fixedly connected to the charging box 101, two groups of rollers 1014 are rotatably connected to the charging box 101, the two groups of rollers 1014 are matched, extruding teeth 1015 are fixedly connected to the rollers 1014, a first gear 1013 is fixedly connected to an output end of the first motor 1011 and one of the groups of rollers 1014, and the two groups of first gears 1013 are meshed;

through starting first motor 1011, make first motor 1011 continuously work, first motor 1011 rotates, mesh through first gear 1013, drive two sets of cylinders 1014 and rotate, cylinder 1014 rotates, can roll the plastics raw materials in blowing case 101, make the raw materials broken and flat, it is bigger to make it can be with thermal area of contact in preheating cabinet 104, can preheat with higher speed, promote and preheat the effect, can also adjust first motor 1011 rotational speed simultaneously, make cylinder 1014 fast, accelerate the time that the raw materials enters into preheating cabinet 104 from blowing case 101.

Example 9:

referring to fig. 1-11, substantially the same as in example 1, further: the second motor 3 is fixedly connected to the box body 1, the stirring blade 302 is rotatably connected to the heating pipeline 4, and the stirring blade 302 and the second motor 3 are connected through a third belt 301;

through lasting circular telegram operation for second motor 3, drive stirring leaf 302 at heating tube 4 internal rotations through third belt 301, can make the raw materials that enters into in the heating tube 4 fully contact with the heat in the heating tube 4, other melt the effect better, prevent to block up heating tube 4 simultaneously, stirring leaf 302 is the heliciform simultaneously, can also further impel the raw materials and be close to extrusion chamber post 5, makes the faster extrusion chamber post that enters into of raw materials in 5.

Example 10:

referring to fig. 1 to 11, a method of using the PET foam molding extruder for automobile interior:

s1: by putting plastic raw materials into the material placing box 101, the roller 1014 rolls the raw materials;

s2: because the first control valve 1021 blocks the communication pipe between the first three-way pipe 102 and the left preheating tank 104, the raw material can only enter the right preheating tank 104 through the first three-way pipe 102, and after a period of heating, the raw material in the right preheating tank 104 is fully preheated;

s3: then, the third motor 9 is started, the pulling rope 901 is wound on the output end of the third motor 9, the pulling rope 901 pulls the first slider 201, the connecting rod 202 and the third slider 5032 to move towards the third motor 9, the third slider 5032 is separated from the discharge hole 1042 of the right preheating box 104, so that the right preheating box 104 is communicated with the heating pipeline 4, the first slider 201 blocks the discharge hole 1042 of the left preheating box 104, meanwhile, the connecting rod 202 drives the rack 206 to move, the rack 206 drives the second gear 204 to rotate, the second gear 204 drives the first belt 103 to rotate the first control valve 1021, the first control valve 1021 rotates by 120 degrees, the first three-way pipe 102 is communicated with the communicating pipe of the right preheating box 104 to be blocked, and the raw materials rolled by the roller 1014 enter the left preheating box 104;

s4: raw materials in the right preheating box 104 start to enter the heating pipeline 4, the left preheating box 104 is fed and starts to preheat, and meanwhile, when the second gear 204 rotates, the second belt 2051 is driven to rotate, the second belt 2051 drives the second control valve 1031 to rotate for 240 degrees, the heat transfer pipe 1041 and the heat transfer pipe 1041 of the right preheating box 104 are blocked, the heat transfer pipe 1041 is communicated with the heat transfer pipe 1041 of the left preheating box 104, heat in the heating pipeline 4 fully enters the left preheating box 104, and the left fed preheating box 104 is heated;

s5: the raw materials entering the heating pipeline 4 are stirred under the condition that the stirring blades 302 rotate, and are pushed to enter the extrusion cavity column 5 at the same time, and after entering the extrusion cavity column 5;

s6: the inflator 6 is started, the inflator 6 inflates air into the extrusion cavity column 5 and the sliding cavity rod 503, the air pushes the extrusion block 502 and the third slide block 5032 to move respectively, the third slide block 5032 seals the communication position of the heating pipeline 4 and the extrusion cavity column 5, and the extrusion block 502 extrudes away, so that the raw material is extruded from the molding port 7.

According to the invention, the raw materials are controlled to be preheated separately, the preheating time is prolonged, the surplus heat in the heating pipeline 4 is utilized for preheating, and the direction of the heat in the heat transfer pipe 1041 is controlled, so that when the raw materials exist in the preheating box 104, the raw materials can be heated intensively by the heat, the preheating efficiency is accelerated, the preheating effect is good, and the forming quality is good.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. PET expanded material shaping extruder for automotive interior, including box (1), its characterized in that still includes:

two groups of preheating boxes (104) which are fixedly connected to the box body (1);

the heating pipelines (4) are fixedly connected to the two groups of preheating boxes (104);

a heat transfer pipe (1041) having one end fixedly connected to the heating pipe (4) and the other end looped around the preheating tank (104) for transferring heat in the heating pipe (4) to the preheating tank (104);

the opening and closing assembly is connected to the two groups of preheating boxes (104) and is used for controlling the falling sequence of the raw materials in the preheating boxes (104);

the extrusion assembly is connected to the heating pipeline (4) and is used for extruding and molding the raw materials;

the closing assembly is connected to the heating pipeline (4) and used for preventing flash;

and the driving assembly is connected to the extrusion assembly and is used for driving the extrusion assembly and the closing assembly to work.

2. The PET foaming material molding extruder for automobile interior according to claim 1, wherein the opening and closing assembly comprises: the device comprises a sliding cavity rod (2) and a third motor (9), wherein the sliding cavity rod (2) is fixedly connected to a preheating box (104) in a penetrating manner, the penetrating position of the sliding cavity rod (2) and the preheating box (104) is communicated with the preheating box (104), a third spring (10) is fixedly connected in the sliding cavity rod (2), one end, far away from the sliding cavity rod (2), of the third spring (10) is fixedly connected with a first sliding block (201), the first sliding block (201) is matched with one group of preheating boxes (104), one end, far away from the third spring (10), of the first sliding block (201) is fixedly connected with a connecting rod (202), one end, far away from the first sliding block (201), of the connecting rod (202) is fixedly connected with a second sliding block (203), the second sliding block (203) is matched with the other group of preheating boxes (104), and the first sliding block (201) and the second sliding block (203) are both connected in the sliding cavity rod (2) in a sliding manner, one end, far away from the connecting rod (202), of the second sliding block (203) is fixedly connected with a traction rope (901), the third motor (9) is fixedly connected to the box body (1), and one end, far away from the second sliding block (203), of the traction rope (901) is fixedly connected to the output end of the third motor (9).

3. The PET foaming material molding extruder for automobile interior according to claim 1, wherein a first control component is provided on the case body (1), and the first control component comprises: the preheating device comprises a first three-way pipe (102), a second gear (204), a first control valve (1021) and a rack (206), wherein a material discharging box (101) is fixedly connected to the box body (1), the first three-way pipe (102) is respectively and fixedly connected to the material discharging box (101) and two groups of preheating boxes (104), the first control valve (1021) is rotatably connected to the first three-way pipe (102), the first control valve (1021) is matched with the first three-way pipe (102), the second gear (204) is rotatably connected to a sliding cavity rod (2), the first control valve (1021) and the second gear (204) are connected through a first belt (103), the rack (206) is fixedly connected to a connecting rod (202), and the rack (206) is meshed with the second gear (204).

4. The PET foaming material molding extruder for automobile interior according to claim 1, wherein the extrusion assembly comprises: extrude chamber post (5), first spring (501) of symmetry fixedly connected with in extrusion chamber post (5), one end fixedly connected with extrusion piece (502) of extrusion chamber post (5) are kept away from in first spring (501), fixedly connected with becomes die orifice (7) on extrusion chamber post (5), fixedly connected with flexible piece (702) are gone up in forming die orifice (7), fixedly connected with shelves pole (701) are gone up in flexible piece (702).

5. The PET foaming material molding extruder for automobile interior according to claim 1, wherein the closing assembly comprises: the sliding cavity rod (503) is fixedly connected to the heating pipeline (4), one end of the sliding cavity rod (503) leads into the heating pipeline (4), a second spring (5031) is fixedly connected in the sliding cavity rod (503), one end, far away from the sliding cavity rod (503), of the second spring (5031) is fixedly connected with a third sliding block (5032), the third sliding block (5032) is connected in the sliding cavity rod (503) in a sliding mode, and the third sliding block (5032) is matched with the heating pipeline (4).

6. The PET foaming material molding extruder for automobile interior according to claim 1, wherein the driving assembly comprises: inflator pump (6), inflator pump (6) fixed connection is on box (1), fixedly connected with trachea (601) on inflator pump (6), the one end that inflator pump (6) were kept away from in trachea (601) leads to respectively and slides chamber pole (503), extrudees chamber post (5) both ends.

7. The PET foaming material molding extruder for automobile interiors according to claim 1, wherein a second three-way pipe (8) is fixedly connected to the heat transfer pipe (1041), a second control valve (1031) is rotatably connected to the second three-way pipe (8), the second control valve (1031) is connected to a second gear (204) through a second belt (2051), and the second control valve (1031) is matched with the second three-way pipe (8).

8. The PET foaming material molding extruder for the automotive interior according to claim 3, wherein a first motor (1011) is fixedly connected to the feeding box (101), two sets of rollers (1014) are rotatably connected to the feeding box (101), the two sets of rollers (1014) are matched with each other, the rollers (1014) are fixedly connected with extrusion teeth (1015), a first gear (1013) is fixedly connected to an output end of the first motor (1011) and one set of rollers (1014), and the two sets of first gears (1013) are meshed with each other.

9. The PET foaming material molding extruder for automobile interiors according to claim 1, wherein a second motor (3) is fixedly connected to the box body (1), a stirring blade (302) is rotatably connected to the heating pipe (4), and the stirring blade (302) and the second motor (3) are connected through a third belt (301).

10. A method for using the PET foaming material molding extruder for automobile interior according to any one of claims 1 to 9, which mainly comprises the steps of:

s1: the plastic raw materials are put into a material placing box (101), and the raw materials are rolled by a roller (1014);

s2: because the first control valve (1021) plugs the communication pipe between the first three-way pipe (102) and the left preheating tank (104), raw materials can only enter the right preheating tank (104) through the first three-way pipe (102), and after a period of heating, the raw materials in the right preheating tank (104) are fully preheated;

s3: then the third motor (9) is started, the traction rope (901) is wound on the output end of the third motor (9), the traction rope (901) pulls the first slide block (201), the connecting rod (202) and the third slide block (5032) to move towards the third motor (9), the third slide block (5032) is separated from the discharge hole (1042) of the right preheating box (104), the right preheating box (104) is communicated with the heating pipeline (4), the first slide block (201) blocks the discharge hole (1042) of the left preheating box (104), meanwhile, the connecting rod (202) drives the rack (206) to move, the rack (206) drives the second gear (204) to rotate, the second gear (204) drives the first belt (103) to enable the first control valve (1021) to rotate, the first control valve (1021) just rotates by 120 degrees, the first three-way pipe (102) is communicated with the right preheating box (104) to be blocked, and raw materials rolled by the roller (1014) enter the left preheating box (104);

s4: raw materials in the right preheating box (104) begin to enter the heating pipeline (4), the left preheating box (104) is fed and begins to preheat, meanwhile, when the second gear (204) rotates, the second gear can drive the second belt (2051) to rotate, the second belt (2051) drives the second control valve (1031) to rotate for 240 degrees, the heat transfer pipe (1041) and the heat transfer pipe (1041) of the right preheating box (104) are blocked, the heat transfer pipe (1041) is communicated with the heat transfer pipe (1041) of the left preheating box (104), heat in the heating pipeline (4) fully enters the left preheating box (104), and the left fed preheating box (104) is heated;

s5: the raw materials entering the heating pipeline (4) are stirred under the condition that the stirring blades (302) rotate, and are pushed to enter the extrusion cavity column (5) at the same time, and after entering the extrusion cavity column (5);

s6: and (3) starting the inflator pump (6), inflating the extrusion cavity column (5) and the sliding cavity rod (503) by the inflator pump (6), respectively pushing the extrusion block (502) and the third slider (5032) to move by the gas, plugging the communication part of the heating pipeline (4) and the extrusion cavity column (5) by the third slider (5032), extruding and separating the extrusion block (502), and extruding the raw material from the molding opening (7).