CN111300729B

CN111300729B - PE material injection molding process

Info

Publication number: CN111300729B
Application number: CN202010206346.2A
Authority: CN
Inventors: 徐新华
Original assignee: Huizhou Deshengxiang Industrial Co ltd
Current assignee: Huizhou deshengxiang Industrial Co.,Ltd.
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-12-31
Anticipated expiration: 2040-03-23
Also published as: CN111300729A

Abstract

The invention belongs to the technical field of PE material injection molding, and particularly relates to a PE material injection molding process; the injection mold comprises an inner mold and an outer mold; the bottom of the auxiliary plate is fixedly connected with a bottom plate; the motor driving shaft penetrates through the bottom plate and is fixedly connected with the internal mold; the upper surface of the supporting plate is fixedly connected with first electric telescopic rods which are uniformly arranged; first sliding grooves are uniformly distributed in the inner wall of the inner die above the supporting plate; a first sliding rod is connected in each first sliding groove in a sliding mode and fixedly connected with first electric telescopic rods which are uniformly arranged; arc-shaped grooves which are uniformly distributed are formed in the inner wall of each first sliding rod on the side opposite to the first sliding rod; the invention is mainly used for solving the problems that in the process of injecting the PE pipe, the gas in the raw materials is not completely discharged, so that holes are formed in the injected pipe, and simultaneously, burrs are generated on the inner wall and the outer surface of the PE pipe after the injection molding is finished, so that the interior of the PE pipe is polluted.

Description

PE material injection molding process

Technical Field

The invention belongs to the technical field of PE material injection molding, and particularly relates to a PE material injection molding process.

Background

Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can be classified into an injection molding die method and a die casting method. An injection molding machine (also known as an injection molding machine or an injection molding machine) is a main molding device for manufacturing thermoplastic plastics or thermosetting plastics into plastic products with various shapes by using a plastic molding die, wherein the injection molding is realized by using the injection molding machine and the die, the injection molding machine is also known as the injection molding machine or the injection molding machine, the main molding device is used for manufacturing the thermoplastic plastics or the thermosetting plastics into the plastic products with various shapes by using the plastic molding die and is divided into a vertical type, a horizontal type and a full-electric type, the injection molding machine can heat the plastics and apply high pressure to the molten plastics so as to inject the molten plastics to fill a die cavity of the die. In general, the injection molding process refers to a process of preparing a plastic material to be molded, such as plasticizing (plasticizing) the plastic material, then injecting the plasticized (plasticized) plastic material into a cavity of an injection mold, and obtaining a desired injection molded part after the plastic material is hardened, and with respect to the description of the injection molding process of PE material, the journal period is as follows: song wealth fortune, Zhangpeng, Tan Jianzhi, PE pipe fitting injection molding process optimization design, engineering plastics application 2011 (05). However, there still exist certain problems in the process of PE material injection molding, including the following aspects:

at present at the in-process of the PE tubular product of moulding plastics, because the gas in the raw materials is not got rid of completely to there is the hole in the tubular product that leads to moulding plastics, the condition such as fracture takes place very easily, and inner wall and surface can produce the burr after the PE tubular product is being moulded plastics simultaneously, thereby can make the interior problem that pollutes of production of PE tubular product, like patent number: 201510288337.1 entitled PE material injection moulding process, but this solution still does not solve the problem during the injection moulding of PE material.

In view of this, in order to overcome the above technical problems, the present company designs and develops a PE injection molding process, manufactures a special mold, and solves the above technical problems.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides a PE material injection molding process which is mainly used for solving the problems that in the process of injecting a PE pipe at present, because gas in raw materials is not completely discharged, holes are formed in the pipe subjected to injection molding, cracking is easy to occur and the like, and meanwhile, after the injection molding of the PE pipe is finished, burrs are generated on the inner wall and the outer surface, so that pollution is generated in the PE pipe.

The technical scheme adopted by the invention for solving the technical problems is as follows: a PE material injection molding process comprises the following steps:

s1: putting the selected various PE materials into a reaction tank filled with deionized water, heating to 90-100 ℃, and boiling, disinfecting and cleaning the various PE raw materials for 30-40 minutes; the dust and bacteria on the material can be killed by boiling the various materials, so that the purity of the various materials can be improved, and the influence of impurities in the materials on the injection molding quality is prevented.

S2: putting the various boiled raw materials in S1 into an oven in sequence, drying the raw materials, putting the raw materials into a crushing device in sequence after the raw materials are dried, and crushing the raw materials; the boiled materials are dried to prevent the residual moisture in the crushing process, so that the materials are coagulated to be insufficiently mixed.

S3: putting the crushed raw materials in the S2 into a hot melting device, heating to 175-200 ℃, carrying out hot melting for 10-15 minutes, taking out the raw materials after the hot melting is finished, and putting the raw materials into a heat preservation device; by heating the various material hot melting device to 175-200 ℃ and carrying out hot melting for 10-15 minutes, various raw materials can be fully hot melted, so that the injection molding process is prevented from being affected by insufficient hot melting of the materials.

S4: selecting a PE pipe injection mold, heating an inner mold in the PE pipe injection mold to 30-50 ℃, and heating an outer mold to 40-60 ℃; the PE pipe injection mold is preheated, so that the raw materials can be prevented from being cooled and condensed too fast in the injection molding process, and the material is not sufficiently injected.

S5, injecting the raw material subjected to hot melting in the S3 into a PE pipe injection mold, and pressing the PE pipe injection mold for 3-5 minutes; the raw materials can be prevented from generating air holes in the raw materials in the injection molding process by applying pressure into the mold, so that the injection molding quality of the materials is influenced.

The injection mold comprises an inner mold and an outer mold; the bottom of the inner mold is rotatably connected with an auxiliary plate; the bottom of the auxiliary plate is fixedly connected with a bottom plate; the lower surface is fixedly connected with a motor at the central line position, and the motor is electrically connected with the controller through a lead; the motor driving shaft penetrates through the bottom plate and is fixedly connected with the internal mold; the outer surface of the motor driving shaft is fixedly connected with a supporting plate; the upper surface of the supporting plate is fixedly connected with first electric telescopic rods which are uniformly arranged; first sliding grooves are uniformly distributed in the inner wall of the inner die above the supporting plate; a first sliding rod is connected in each first sliding groove in a sliding mode and fixedly connected with first electric telescopic rods which are uniformly arranged; arc-shaped grooves which are uniformly distributed are formed in the inner wall of each first sliding rod on the side opposite to the first sliding rod; an arc-shaped block is connected in each arc-shaped groove in a sliding manner through a spring; a supporting block is fixedly connected to one side of each arc-shaped block, which is opposite to the other side, and the supporting blocks are made of rubber materials; the outer side of the inner die is connected with an outer die in a sliding manner, and the outer surface of the outer die is designed to be a rough surface; the outer die comprises combination blocks which are uniformly distributed, and the combination blocks are mutually attached to form the outer die; the opposite sides of each combination block are fixedly connected with uniformly arranged U-shaped plates; a second electric telescopic rod is fixedly connected to the end surface of one side of each U-shaped plate opposite to the U-shaped plate; the side, opposite to the other side, of each second electric telescopic rod is fixedly connected with a baffle which is uniformly arranged on the upper surface of the bottom plate, and the baffles are fixedly connected with the other end of each second electric telescopic rod; the upper surface of each baffle is provided with a convex groove in the inner wall of the baffle; the upper surface of each baffle is rotatably connected with a cover plate, the lower surface of the cover plate is fixedly connected with uniformly arranged convex blocks, and the convex blocks are in sliding connection with the convex grooves; a supercharger is arranged in the inner wall of the cover plate at the central line position and is electrically connected with the controller through a lead;

when the injection molding machine works, when materials need to be injected, a mold is preheated, when the temperature of an inner mold reaches 30-50 ℃ and the temperature of an outer mold reaches 40-60 ℃, the hot-melted materials are injected into cavities of the inner mold and the outer mold, the convex block on the cover plate is in sliding connection with the convex groove formed on the upper surface of the baffle plate, so that the convex block on the cover plate can be screwed into the convex groove on the baffle plate, the mold can be sealed, meanwhile, the controller controls the motor to slowly rotate at a constant speed, the motor is fixedly connected with the inner mold so as to drive the inner mold to rotate, the hot-melted materials can be stirred in the rotating process of the inner mold, and the residual gas in the raw materials can be stirred out in the process, so that the influence of the residual gas in the materials on the injection molding process of the materials can be avoided, and the inner wall of a pipe after injection molding can be polished at the same time, thereby the smoothness degree of the inner wall of the pipe can be improved, at the moment, the controller controls the supercharger to apply pressure to the inside of the mould, the hot melting material in the mould can be pressed in the process, thereby the molecular structure between the raw materials can be firmer, simultaneously the cooling of the hot melting material can be accelerated, thereby the injection molding efficiency of the material can be improved, when the material in the mould is condensed, the controller controls the supercharger to stop applying pressure, and simultaneously the controller controls the first electric telescopic rod to slowly stretch, because the first electric telescopic rod is fixedly connected with the first slide bar in the first slide groove, the first slide bar can be driven to upwards slide in the first slide groove in the stretching process of the first electric telescopic rod, in the upwards sliding process of the first slide bar, the arc-shaped groove on the first slide bar can push the arc-shaped block to outwards slide, and in the outwards sliding process of the arc-shaped block can push the supporting block to inwards and outwards move, after the supporting shoe contacts with the tubular product of accomplishing of moulding plastics, the expansion is stopped to first electric telescopic handle of controller control, because the supporting shoe is made for rubber materials, thereby can prevent that the supporting shoe from causing wearing and tearing to the tubular product inner wall, the centre form can drive the tubular product of accomplishing of moulding plastics through the supporting shoe in this in-process rotatory, the shrink of controller control second electric telescopic handle simultaneously, because "U" shaped plate that second electric telescopic handle and combination piece surface linked firmly links firmly, thereby can drive the outside removal of combination piece, can make the combination piece break away from with the tubular product of accomplishing of moulding plastics at the in-process that the combination piece moved outside.

Preferably, a friction plate is connected to the inner wall of each combined block in a sliding manner, and the friction plates are arranged between the U-shaped plates and are fixedly connected with the U-shaped plates through springs; the upper side and the lower side of each second electric telescopic rod are fixedly connected with an inserted link in the inner wall of the baffle; the U-shaped plate is arranged between the two inserted rods; the during operation, because both sides have all linked firmly the inserted bar about the second electric telescopic handle, the in-process that second electric telescopic handle contracts can promote the friction plate to the slow movement of inner mould position, can polish the processing to the tubular product surface at the in-process that the friction plate removed to can prevent that the tubular product surface from having the aesthetic measure that deckle edge influences tubular product, because "U" shaped plate is arranged in between two inserted bars, thereby can prevent that the picture peg from inserting on "U" shaped plate, influence the process of polishing of friction plate.

Preferably, the upper end face of each combination block is fixedly connected with a liquid storage tank, and the liquid storage tank is made of high-hardness alloy; the liquid storage tank is designed in an arc shape; each liquid storage tank is filled with a colloidal lubricating liquid; a first liquid leakage groove is formed below each liquid storage tank and extends into the inner wall of the combined block; a liquid storage tank is arranged in the inner wall of each friction plate; a second liquid leakage groove is formed in the inner wall of the friction plate above each liquid storage groove, and the second liquid leakage groove is not overlapped with the first liquid leakage groove in the initial state; the inner wall of each liquid storage tank is fixedly connected with an inclined plate which is uniformly arranged, and the inclined plate is provided with first through holes which are uniformly arranged; a liquid leakage hole is formed in one side, opposite to each inclined plate, of each inclined plate, and each liquid leakage hole extends to the outside; when the device works, the upper end surfaces of the combination blocks are fixedly connected with the liquid storage tanks, the second liquid leakage grooves formed in the friction plates can be gradually overlapped with the first liquid leakage grooves in the process that the friction plates move to the inner mold position, when the first liquid leakage grooves are overlapped with the second liquid leakage grooves, the colloidal lubricating liquid in the liquid storage tanks can flow into the liquid storage tanks through the second liquid leakage holes, the liquid storage tanks are fixedly connected with the inclined plates which are uniformly arranged, when the colloidal lubricating liquid flows onto the inclined plates, part of the colloidal lubricating liquid can flow into the liquid leakage holes through the inclined plates, part of the colloidal lubricating liquid can flow onto the next inclined plate through the first through holes which are uniformly arranged on the inclined plates and repeat in sequence, the colloidal lubricating liquid flowing into the liquid leakage holes can flow to the outer surface of the pipe through the liquid leakage holes, when the colloidal lubricating liquid flows onto the outer surface of the pipe, the friction plates can uniformly spread the colloidal lubricating liquid on the outer surface of the pipe, and thus the outer surface of the pipe can be coated, in the process, the smoothness of the pipe can be improved, and the corrosion resistance of the surface of the pipe can be enhanced.

Preferably, each liquid leakage hole is fixedly connected with a liquid leakage plate; second through holes which are uniformly distributed are fixedly connected in the inner wall of each liquid leakage plate, and the second through holes are designed in an inclined manner; the during operation, because the weeping board has all been linked firmly in the weeping hole, and all set up the second through-hole of slope on the weeping board, when gluey nature lubricated liquid when the weeping board, the weeping board has certain effect of stopping to gluey nature lubricated liquid to prevent that gluey nature lubricated liquid from flowing out too much and causing the waste.

Preferably, an elongated slot is formed in the inner wall of each baffle, and the inside of each elongated slot is filled with the adhesive lubricating liquid; a long plate is connected in each long groove in a sliding manner through a spring; each inserted link extends into the elongated slot and is fixedly connected with the long plate; a first guide pipe is fixedly connected above each long groove, and the first guide pipes are all designed as elastic pipes; the other end of each first conduit is communicated with the liquid storage tanks which are uniformly distributed; when the pipe coating machine works, the inserted rods are fixedly connected with the long plate in the long groove, the inserted rods can slide outwards under the reaction force of the friction plate in the process that the inserted rods extrude the friction plate, the long plate can be pushed to slide towards the long groove in the outward sliding process, the colloidal lubricating liquid in the long groove can be extruded in the sliding process of the long plate, the long groove is communicated with the liquid storage box through the first guide pipe, so that the colloidal lubricating liquid can be extruded into the liquid storage box from the first guide pipe, the pipe cannot be coated due to the fact that the colloidal lubricating liquid in the liquid storage box is insufficient in the process, in the process that the pipe is polished by the friction plate, the friction plate can drive the inserted rods to vibrate due to the acting force of the pipe, the long plate can be pushed to move in the vibrating process of the inserting plate, and the colloidal lubricating liquid in the long groove can be further pressed into the liquid storage box.

Preferably, the bottom of each long groove is fixedly connected with a second conduit, and the second conduits are all designed as elastic pipes; a long hole is formed in the inner wall of each liquid storage tank below the liquid storage tank and fixedly connected with the other end of the second conduit; when the long groove lubricating device works, the second guide pipes fixedly connected with the bottoms of the long grooves are fixedly connected with the long holes, when the adhesive lubricating liquid flows into the bottom of the liquid storage groove, the adhesive lubricating liquid can flow into the second guide pipes through the long holes, the adhesive lubricating liquid flowing into the second guide pipes flows into the long grooves, and waste of the adhesive lubricating liquid can be reduced in the process, so that the cost is saved.

The invention has the following beneficial effects:

1. according to the invention, the friction plate is arranged, the upper side and the lower side of the second electric telescopic rod are fixedly connected with the inserting rods, the friction plate can be pushed to slowly move towards the inner die position in the contraction process of the second electric telescopic rod, the outer surface of the pipe can be polished in the moving process of the friction plate, so that the influence of burrs on the outer surface of the pipe on the aesthetic degree of the pipe can be prevented, and the U-shaped plate is arranged between the two inserting rods, so that the influence of the inserting rods inserted on the U-shaped plate on the polishing process of the friction plate can be prevented.

2. The long groove is arranged, so that the colloidal lubricating liquid in the long groove can be extruded in the sliding process of the long plate, the long groove is communicated with the liquid storage box through the first guide pipe, so that the colloidal lubricating liquid can be extruded into the liquid storage box from the first guide pipe, the situation that the pipe cannot be coated due to the fact that the colloidal lubricating liquid in the liquid storage box is insufficient can be prevented in the process, in the process of polishing the pipe by the friction plate, the friction plate can drive the insert rod to vibrate due to the acting force of the pipe, the long plate can be pushed to move in the process of vibrating the insert plate, and the colloidal lubricating liquid in the long groove can be further pressed into the liquid storage box.

Drawings

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

FIG. 1 is a flow chart of the present invention;

FIG. 2 is a body view of the inventive die;

FIG. 3 is a cross-sectional view of the inventive die;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged view of a portion of FIG. 3 at B;

FIG. 6 is an enlarged view of a portion of FIG. 3 at C;

FIG. 7 is an enlarged view of a portion of FIG. 3 at D;

in the figure: the device comprises an inner die 1, a bottom plate 11, a support plate 12, a first electric telescopic rod 13, a first sliding chute 14, a first sliding rod 15, an arc-shaped groove 16, an arc-shaped block 17, a support block 18, an outer die 2, a combined block 21, a U-shaped plate 22, a second electric telescopic rod 23, a baffle plate 24, a cover plate 25, a supercharger 26, a friction plate 27, an inserted link 29, a liquid storage tank 291, a first liquid leakage groove 292, a second liquid leakage groove 293, a liquid storage groove 294, an inclined plate 295, a liquid leakage hole 296, a long groove 297 and a long plate 298.

Detailed Description

An injection molding process of a PE material according to an embodiment of the present invention will be described below with reference to fig. 1 to 7.

As shown in fig. 1-7, the injection molding process of PE material according to the present invention comprises the following steps:

The injection mold comprises an inner mold 1 and an outer mold 2; the bottom of the inner mold 1 is rotatably connected with an auxiliary plate; the bottom of the auxiliary plate is fixedly connected with a bottom plate 11; the lower surface is fixedly connected with a motor at the central line position, and the motor is electrically connected with the controller through a lead; the motor driving shaft penetrates through the bottom plate 11 and is fixedly connected with the internal mold 1; the outer surface of the motor driving shaft is fixedly connected with a supporting plate 12; the upper surface of the supporting plate 12 is fixedly connected with first electric telescopic rods 13 which are uniformly arranged; first sliding chutes 14 are uniformly arranged in the inner wall of the inner die 1 above the supporting plate 12; a first sliding rod 15 is connected in each first sliding chute 14 in a sliding manner, and the first sliding rods 15 are fixedly connected with first electric telescopic rods 13 which are uniformly arranged; arc-shaped grooves 16 which are uniformly distributed are formed in the inner wall of each first sliding rod 15, and the side, opposite to the first sliding rod 15, of each first sliding rod 15; an arc-shaped block 17 is connected in each arc-shaped groove 16 in a sliding manner through a spring; a supporting block 18 is fixedly connected to one side of each arc-shaped block 17 opposite to the other side, and the supporting blocks 18 are made of rubber materials; the outer side of the inner die 1 is connected with an outer die 2 in a sliding manner, and the outer surface of the outer die 2 is designed to be a rough surface; the outer die 2 comprises combination blocks 21 which are uniformly arranged, and the combination blocks 21 are mutually attached to form the outer die 2; the opposite side of each combination block 21 is fixedly connected with evenly arranged U-shaped plates 22; a second electric telescopic rod 23 is fixedly connected to the end surface of one side of each U-shaped plate 22 opposite to the other side; one side of each second electric telescopic rod 23 opposite to the other side is fixedly connected with a baffle 24 which is uniformly arranged on the upper surface of the bottom plate 11, and the baffles 24 are fixedly connected with the other end of each second electric telescopic rod 23; the upper surface of each baffle plate 24 is provided with a convex groove in the inner wall of the baffle plate 24; the upper surface of each baffle plate 24 is rotatably connected with a cover plate 25, the lower surface of each cover plate 25 is fixedly connected with uniformly arranged convex blocks, and the convex blocks are slidably connected with the convex grooves; a booster 26 is arranged in the inner wall of the cover plate 25 at the central line position, and the booster 26 is electrically connected with the controller through a lead;

when the device works, when materials need to be injected, the device firstly preheats a die, when the temperature of the inner die 1 reaches 30-50 ℃ and the temperature of the outer die 2 reaches 40-60 ℃, the hot-melted materials are injected into the cavities of the inner die 1 and the outer die 2, as the convex-shaped block fixedly connected on the cover plate 25 is in sliding connection with the convex-shaped groove arranged on the upper surface of the baffle plate 24, the convex-shaped block on the cover plate 25 can be screwed into the convex-shaped groove on the baffle plate 24, so that the die can be sealed, and simultaneously, the controller controls the motor to slowly rotate at a constant speed, as the motor is fixedly connected with the inner die 1, the inner die 1 can be driven to rotate, the hot-melted materials can be stirred in the rotating process of the inner die 1, the residual gas in the raw materials can be stirred out in the process, so that the injection molding process of the materials can be avoided, and the inner wall of the injection molded pipe can be polished at the same time, therefore, the smoothness degree of the inner wall of the pipe can be improved, at the moment, the controller controls the supercharger 26 to apply pressure to the inside of the mold, and the hot-melt material in the mold can be pressed in the process, so that the molecular structure between the raw materials can be firmer, and the cooling of the hot-melt material can be accelerated, so that the injection molding efficiency of the material can be improved, when the material in the mold is condensed, the controller controls the supercharger 26 to stop applying pressure, and simultaneously controls the first electric telescopic rod 13 to slowly stretch, because the first electric telescopic rod 13 is fixedly connected with the first sliding rod 15 in the first sliding groove 14, the first sliding rod 15 can be driven to upwards slide in the first sliding groove 14 in the stretching process of the first electric telescopic rod 13, in the upwards sliding process of the first sliding rod 15, the arc-shaped groove 16 on the first sliding rod 15 can push the arc-shaped block 17 to outwards slide, and in the outwards sliding process of the arc-shaped block 17 can push the supporting block 18 to outwards move towards the inner mold 1, after the supporting shoe 18 contacts with the tubular product that the completion of moulding plastics, the controller control first electric telescopic handle 13 stops the expansion, because supporting shoe 18 is made for rubber materials, thereby can prevent that supporting shoe 18 from causing wearing and tearing to the tubular product inner wall, centre form 1 can drive the tubular product that the completion of moulding plastics through supporting shoe 18 in this process rotatory, the shrink of second electric telescopic handle 23 is controlled to the controller simultaneously, because "U" shaped plate 22 that second electric telescopic handle 23 and combination piece 21 surface link firmly links firmly, thereby can drive combination piece 21 outwards removal, can make combination piece 21 break away from with the tubular product that the completion of moulding plastics in the process of combination piece 21 outwards removing.

As an embodiment of the present invention, a friction plate 27 is slidably connected to an inner wall of each of the combination blocks 21, and the friction plate 27 is disposed between the U-shaped plates 22 and is fixedly connected to the U-shaped plates 22 through a spring; the upper side and the lower side of each second electric telescopic rod 23 are fixedly connected with an inserted link 29 in the inner wall of the baffle 24; the U-shaped plate 22 is arranged between the two inserted rods 29; during operation, because both sides all have linked firmly the inserted bar 29 about second electric telescopic handle 23, the in-process of second electric telescopic handle 23 shrink can promote friction plate 27 to centre form 1 position slow moving, can polish the processing to the tubular product surface at the in-process that friction plate 27 removed, thereby can prevent that the tubular product surface from having the aesthetic measure that deckle edge influences tubular product, because "U" shaped plate 22 arranges in between two inserted bars 29, thereby can prevent that the picture peg from inserting on "U" shaped plate 22, influence the process of polishing of friction plate 27.

As an embodiment of the present invention, a liquid storage tank 291 is fixedly connected to an upper end surface of each combination block 21, and the liquid storage tank 291 is made of a high hardness alloy; the liquid storage tank 291 is designed in an arc shape; each liquid storage box 291 is filled with a colloidal lubricating liquid; a first liquid leakage groove 292 is formed below each liquid storage box 291, and the first liquid leakage groove 292 extends into the inner wall of the combination block 21; a liquid storage tank 294 is arranged in the inner wall of each friction plate 27; a second liquid leakage groove 293 is formed in the inner wall of the friction plate 27 above each liquid storage groove 294, and the second liquid leakage groove 293 is not overlapped with the first liquid leakage groove 292 in the initial state; the inner wall of each liquid storage tank 294 is fixedly connected with an inclined plate 295 which is uniformly arranged, and the inclined plate 295 is provided with first through holes which are uniformly arranged; a liquid leakage hole 296 is formed in the opposite side of each inclined plate 295, and the liquid leakage holes 296 extend to the outside; when the combined block 21 works, the upper end surfaces of the combined blocks 21 are fixedly connected with the liquid storage tank 291, the second liquid leakage tank 293 arranged on the friction plate 27 can be gradually overlapped with the first liquid leakage tank 292 in the process that the friction plate 27 moves towards the position of the inner mold 1, when the first liquid leakage tank 292 is overlapped with the second liquid leakage tank 293, the colloidal lubricating liquid in the liquid storage tank 291 can flow into the liquid storage tank 294 through the second liquid leakage hole 296, because the liquid storage tank 294 is fixedly connected with the uniformly arranged sloping plate 295, when the colloidal lubricating liquid flows onto the sloping plate 295, part of the colloidal lubricating liquid can flow into the liquid leakage hole 296 through the sloping plate 295, part of the colloidal lubricating liquid can flow onto the next sloping plate 295 through the first through holes uniformly arranged on the sloping plate 295 and repeatedly in sequence, the colloidal lubricating liquid flowing into the liquid leakage hole 296 can flow onto the outer surface of the pipe, when the colloidal lubricating liquid flows onto the outer surface of the pipe, the friction plate 27 can uniformly flow the pipe on the outer surface of the pipe, therefore, the outer surface of the pipe can be coated, the smoothness of the pipe can be improved in the process, and meanwhile, the corrosion resistance of the surface of the pipe can be enhanced.

As an embodiment of the present invention, a liquid leaking plate is fixedly connected to each of the liquid leaking holes 296; second through holes which are uniformly distributed are fixedly connected in the inner wall of each liquid leakage plate, and the second through holes are designed in an inclined manner; during operation, because all linked firmly the weeping board in the weeping hole 296, and all seted up the second through-hole of slope on the weeping board, when gluey nature lubricating liquid when the weeping board, the weeping board has certain effect of stopping to gluey nature lubricating liquid to prevent that gluey nature lubricating liquid from flowing out too much and causing the waste.

As an embodiment of the present invention, a long groove 297 is formed in an inner wall of each baffle, and the long groove 297 is filled with an adhesive lubricating liquid; an elongated plate 298 is slidably attached to each of the elongated channels 297 via a spring; each inserted link 29 extends into the long groove 297 to be fixedly connected with the long plate 298; a first conduit is fixedly connected above each long groove 297 and is designed as an elastic pipe; the other end of each first conduit is communicated with a liquid storage box 291 which is uniformly arranged; in operation, since the insert rods 29 are fixedly connected to the long plates 298 in the long grooves 297, the insert rods 29 will slide outward under the reaction force of the friction plates when the insert rods 29 press the friction plates 27, the long plate 298 is pushed to slide into the long groove 297 during the outward sliding process, the adhesive lubricating fluid in the long groove 297 can be squeezed during the sliding process of the long plate 298, since the long groove 297 is communicated with the reservoir 291 through the first conduit so that the viscous lubricating fluid can be squeezed from the first conduit into the reservoir 291, in the process, the situation that the tube cannot be coated due to the shortage of the adhesive lubricating liquid in the liquid storage tank 291 can be prevented, in the process of polishing the pipe by the friction plate, the friction plate is acted by the pipe, so that the friction plate drives the inserted rod 29 to vibrate, the long plate 298 is pushed to move during the vibration of the inserting plate, so that the adhesive lubricating fluid in the long groove 297 can be further pressed into the liquid storage box 291.

As an embodiment of the present invention, a second conduit is fixedly connected to the bottom of each long groove 297, and the second conduits are all designed as elastic tubes; a long hole is formed in the inner wall of each liquid storage groove 294 below the liquid storage groove 294, and the long hole is fixedly connected with the other end of the second conduit; during operation, as the second guide pipes fixedly connected with the bottoms of the long grooves 297 are fixedly connected with the long holes, when the adhesive lubricating liquid flows into the bottom of the liquid storage tank 294, the adhesive lubricating liquid flowing into the second guide pipes can flow into the long grooves 297 through the long holes, and therefore waste of the adhesive lubricating liquid can be reduced in the process, and cost is saved.

The specific working process is as follows:

when the hot-melt injection molding machine works, when materials need to be injected, the mold is preheated, when the temperature of the inner mold 1 reaches 30-50 ℃ and the temperature of the outer mold 2 reaches 40-60 ℃, the hot-melt materials are injected into the cavities of the inner mold 1 and the outer mold 2, as the convex-shaped block fixedly connected on the cover plate 25 is in sliding connection with the convex-shaped groove arranged on the upper surface of the baffle plate 24, the convex-shaped block on the cover plate 25 can be screwed into the convex-shaped groove on the baffle plate 24, so that the mold can be sealed, and meanwhile, the controller controls the motor to slowly rotate at a constant speed, as the motor is fixedly connected with the inner mold 1, the inner mold 1 can be driven to rotate, the hot-melt materials can be stirred in the rotating process of the inner mold 1, at the moment, the controller controls the supercharger 26 to apply pressure to the interior of the mold, the hot-melt materials in the mold can be pressed in the process, and after the materials in the mold are condensed, at the moment, the controller controls the supercharger 26 to stop applying pressure, and simultaneously the controller controls the first electric telescopic rod 13 to slowly extend, because the first electric telescopic rod 13 is fixedly connected with the first slide bar 15 in the first chute 14, the first slide bar 15 can be driven to slide upwards in the first chute 14 in the extending process of the first electric telescopic rod 13, in the upward sliding process of the first slide bar 15, the arc-shaped groove 16 on the first slide bar 15 can push the arc-shaped block 17 to slide outwards, in the outward sliding process of the arc-shaped block 17, the supporting block 18 can be pushed to move outwards towards the inner die 1, when the supporting block 18 is contacted with the pipe after injection molding, the controller controls the first electric telescopic rod 13 to stop expanding, because the supporting block 18 is made of rubber material, the supporting block 18 can be prevented from causing abrasion to the inner wall of the pipe, in the process, the inner die 1 can drive the pipe after injection molding to rotate through the supporting block 18, meanwhile, the controller controls the second electric telescopic rod 23 to contract, and the second electric telescopic rod 23 is fixedly connected with the U-shaped plate 22 fixedly connected with the outer surface of the combination block 21, so that the combination block 21 can be driven to move outwards, and the combination block 21 can be separated from the injection-molded pipe in the process of moving outwards of the combination block 21.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An injection molding process of PE material is characterized by comprising the following steps:

s1: putting the selected various PE materials into a reaction tank filled with deionized water, heating to 90-100 ℃, and boiling, disinfecting and cleaning the various PE raw materials for 30-40 minutes;

s2: putting the various boiled raw materials in S1 into an oven in sequence, drying the raw materials, putting the raw materials into a crushing device in sequence after the raw materials are dried, and crushing the raw materials;

s3: putting the crushed raw materials in the S2 into a hot melting device, heating to 175-200 ℃, carrying out hot melting for 10-15 minutes, taking out the raw materials after the hot melting is finished, and putting the raw materials into a heat preservation device;

s4: selecting a PE pipe injection mold, heating an inner mold in the PE pipe injection mold to 30-50 ℃, and heating an outer mold to 40-60 ℃;

s5, injecting the raw material subjected to hot melting in the S3 into a PE pipe injection mold, and pressing the PE pipe injection mold for 3-5 minutes;

the injection mold comprises an inner mold (1) and an outer mold (2); the bottom of the inner mold (1) is rotatably connected with an auxiliary plate; the bottom of the auxiliary plate is fixedly connected with a bottom plate (11); the lower surface is fixedly connected with a motor at the central line position, and the motor is electrically connected with a controller through a lead; the motor driving shaft penetrates through the bottom plate (11) and is fixedly connected with the internal mold (1); the outer surface of the motor driving shaft is fixedly connected with a supporting plate (12); the upper surface of the supporting plate (12) is fixedly connected with first electric telescopic rods (13) which are uniformly arranged; first sliding grooves (14) are uniformly arranged in the inner wall of the inner die (1) above the supporting plate (12); a first sliding rod (15) is connected in each first sliding chute (14) in a sliding manner, and the first sliding rods (15) are fixedly connected with first electric telescopic rods (13) which are uniformly arranged; arc-shaped grooves (16) which are uniformly distributed are formed in the inner wall of each first sliding rod (15) on the side, opposite to the first sliding rod (15); an arc-shaped block (17) is connected in each arc-shaped groove (16) in a sliding manner through a spring; a supporting block (18) is fixedly connected to one side of each arc-shaped block (17) opposite to each other, and the supporting blocks (18) are made of rubber materials; the outer side of the inner die (1) is connected with an outer die (2) in a sliding manner, and the outer surface of the outer die (2) is designed to be a rough surface; the outer die (2) comprises combined blocks (21) which are uniformly distributed, and the combined blocks (21) are mutually attached to form the outer die (2); the opposite side of each combination block (21) is fixedly connected with evenly arranged U-shaped plates (22); a second electric telescopic rod (23) is fixedly connected to the end surface of one side of each U-shaped plate (22) opposite to the other side; one side of each second electric telescopic rod (23), which is opposite to the other side, is fixedly connected with baffle plates (24) which are uniformly arranged on the upper surface of the bottom plate (11), and the baffle plates (24) are fixedly connected with the other end of each second electric telescopic rod (23); a convex groove is formed in the inner wall of each baffle plate (24) on the upper surface of each baffle plate (24); the upper surface of each baffle (24) is rotatably connected with a cover plate (25), the lower surface of each cover plate (25) is fixedly connected with uniformly arranged convex blocks, and the convex blocks are slidably connected with the convex grooves; a supercharger (26) is arranged in the inner wall of the cover plate (25) at the central line position, and the supercharger (26) is electrically connected with the controller through a lead;

a friction plate (27) is connected in the inner wall of each combination block (21) in a sliding manner, and the friction plates (27) are arranged between the U-shaped plates (22) and are fixedly connected with the U-shaped plates (22) through springs; the upper side and the lower side of each second electric telescopic rod (23) are fixedly connected with an inserted link (29) in the inner wall of the baffle (24); the U-shaped plate (22) is arranged between the two inserted rods (29);

the upper end face of each combination block (21) is fixedly connected with a liquid storage tank (291), and the liquid storage tanks (291) are made of high-hardness alloy; the liquid storage tank (291) is designed in an arc shape; each liquid storage tank (291) is filled with a colloidal lubricating liquid; a first liquid leakage groove (292) is formed below each liquid storage tank (291), and the first liquid leakage groove (292) extends into the inner wall of the combination block (21); a liquid storage tank (294) is formed in the inner wall of each friction plate (27); a second liquid leakage groove (293) is formed in the inner wall of the friction plate (27) above each liquid storage groove (294), and the second liquid leakage groove (293) is not overlapped with the first liquid leakage groove (292) in the initial state; the inner wall of each liquid storage tank (294) is fixedly connected with uniformly arranged sloping plates (295), and the sloping plates (295) are provided with uniformly arranged first through holes; every the relative one side of swash plate (295) has all seted up weeping hole (296), and weeping hole (296) all extend to external design.

2. The PE material injection molding process according to claim 1, wherein: a liquid leakage plate is fixedly connected in each liquid leakage hole (296); every all link firmly the second through-hole of evenly arranging in the drain board inner wall, and the design of the equal slope of second through-hole.

3. The PE material injection molding process according to claim 1, wherein: an elongated groove (297) is formed in the inner wall of each baffle, and the inside of each elongated groove (297) is filled with a viscous lubricating liquid; an elongated plate (298) is slidably connected in each elongated slot (297) through a spring; each inserted bar (29) extends into the long groove (297) and is fixedly connected with the long plate (298); a first conduit is fixedly connected above each long groove (297), and the first conduits are all designed as elastic pipes; the other end of each first conduit is communicated with a liquid storage tank (291) which is uniformly arranged.

4. A PE material injection molding process according to claim 3, wherein: the bottom of each long groove (297) is fixedly connected with a second conduit, and the second conduits are all designed as elastic pipes; and a long hole is formed in the inner wall of each liquid storage tank (294) below the liquid storage tank (294), and the long holes are fixedly connected with the other end of the second conduit.