CN109624240A - A kind of electric synchronous belt melten gel injection system - Google Patents

Abstract

The invention discloses a kind of electric synchronous belt melten gel injection systems, belong to injection molding technology field, a kind of electric synchronous belt melten gel injection system, in such a way that servo motor cooperates synchronous belt drive, realize all-electric driving, improve the energy transformation ratio of melten gel injection system, response speed and injection efficiency, box and nearly plasticizing preheating mechanism are dried by being arranged in hopper simultaneously, on the one hand the effect on moisture extraction to plastic grain is improved, effect on moisture extraction is up to 97%-99%, on the other hand pre-heating temperature elevation is carried out to close but do not reach fusing point to plastic grain, plastic grain enters to barrel at this time, compression section can be entered after the pan feeding section of screw rod makees the stop compacting of very short time to melt rapidly, it reduces and has little influence on subsequent fusing compression simultaneously with the friction of the stemness of plastic grain, and in compression section and homogenizing zone molten State is more uniform, and injection molding cost is reduced while improving injection efficiency.

Description

A kind of electric synchronous belt melten gel injection system

Technical field

The present invention relates to injection molding technology fields, more specifically to a kind of electric synchronous belt melten gel injection system.

Background technique

Injection molding is also known as injection molding molding, it is a kind of forming method of simultaneous molding of injection.Injection molding forming method Advantage is that speed of production is fast, high-efficient, operates and automation can be achieved, and designs and varieties are more, and shape can go from the simple to the complex, and size can be with It is descending, and product size is accurate, and product easily updates, and the product of energy forming shape complexity, injection molding is suitable for big The processing and formings field such as amount production and complex-shaped product, at a certain temperature, the plastics material melted completely by helical screw agitator Material injects die cavity with high pressure, and after cooling and solidifying, the method for obtaining molded product, this method is suitable for batch of complex-shaped component Amount production, is important one of processing method, completes injection molding and needs by including preformed metering, injection filling mould, pressure and fill Contracting, the big process of cooling and shaping 4.

It is all using servo oil valve or ratio currently on the market in using injection molding machine progress plastic molten melt, plasticizing process Pressure valve controls the pressure of oil to realize the adjustment of injection pressure and colloidal sol back pressure.The generation of oil pressure drives oil pump by motor, Pressure required for oil pump generation system passes through servo oil valve again or ratio oil valve is converted into injection pressure and colloidal sol back pressure.However Planar defect in the presence of the prior art: first, having mechanical efficiency loss, hydraulic oil pipeline loss during energy conversion； Second, the injection pressure that system provides must be greater than the maximum pressure setting of servo oil valve or ratio oil valve, it is generally about high by 10% More than, therefore this process generates energy loss；Third, when realizing injection pressure and colloidal sol back pressure, because the energy of each component turns It changes, so that response time delay, plasticizing efficiency is low.

Screw in injection molding machine works under high temperature, high pressure, high mechanical torsion and high friction environment for a long time, it is preceding it is several because Element is needed for process conditions, and is lost then inevitable caused by rubbing, and general screw rod all carried out surfaces nitrided processing, to mention High surface hardness, that is, improve antiwear property.But it if having ignored the reason of causing abrasion, is not seeking to wear and drop as far as possible It is low, it necessarily will be greatly reduced the working life of screw rod, two kinds of most situations of screw rod damage are as follows in injection molding industry:

(1) granulated plastic enters barrel from hopper, can reach pan feeding section first, necessarily will appear stemness mill in pan feeding section It wipes, when the heated deficiency of these plastics, when melting is uneven, easily causes material tube inner wall and screw surface to wear and increase；

(2) contained humidity in plastics, if plastics do not exclude moisture all before injection molding, remaining moisture enters screw rod pressure Contracting section is deformed into and is fused and mixed " vapor particles " with high temperature and pressure in molten plastic, with the propulsion of screw rod in injection process, From homogenizing end up to screw head, these " vapor particles " pressure release during injection expands, as many fine impurity Solids causes friction destruction to act on screw rod and material tube inner wall, and the service life of barrel and screw rod is greatly reduced.

In conclusion since melten gel injection system often decides the quality of plastic products, traditional melten gel injection system Driving method excessively falls behind, and consume energy big, low-response, low efficiency, and the damage of injection screw is excessively serious, needs frequently to repair more It changes, substantially increases injection molding cost, restrict the further development of Injection Industry.

Summary of the invention

1. technical problems to be solved

Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of electric synchronous belt melten gel injections System, it may be implemented to realize all-electric driving in the way of servo motor cooperation synchronous belt drive, improve melten gel injection Energy transformation ratio, response speed and the injection efficiency of system, at the same it is pre- by the way that drying process box and nearly plasticizing are arranged in hopper On the one hand heat engine structure improves the effect on moisture extraction to plastic grain, effect on moisture extraction is up to 97%-99%, on the other hand to plastics Grain carries out pre-heating temperature elevation to approaching but not reaching fusing point, and plastic grain enters to barrel at this time, makees in the pan feeding section of screw rod extremely short Compression section can be entered after the stop compacting of time to melt rapidly, be equivalent to the pan feeding section for shortening screw rod, reduction and plastic grain Stemness friction have little influence on subsequent fusing simultaneously and compress, and it is more uniform in compression section and homogenizing zone molten condition, from And the abrasion of screw rod entirety is reduced, it prolongs its service life, injection molding cost is reduced while improving injection efficiency.

2. technical solution

To solve the above problems, the present invention adopts the following technical scheme that.

A kind of electric synchronous belt melten gel injection system, including injection molding console, hopper and machine barrel, the machine barrel include material Cylinder, screw rod and nozzle, the injection molding console are connected with melten gel driving mechanism and injection driving mechanism, the melten gel driving mechanism Including melten gel servo motor, melten gel pinion gear, melten gel synchronous belt, melten gel gear wheel, transmission shaft, and melten gel servo motor successively leads to It crosses melten gel pinion gear, melten gel synchronous belt, melten gel gear wheel, transmission shaft and drives screw rod rotation, the injection driving mechanism includes penetrating Glue servo motor, injection pinion gear, injection synchronous belt, injection gear wheel, ball screw, feed screw nut, pressure sensor, synchronization Bar, and injection servo motor passes sequentially through injection pinion gear, injection synchronous belt, injection gear wheel and drives ball screw turns, institute It states feed screw nut to connect by synchronizing bar with screw rod, and pressure sensor is mounted on feed screw nut, the screw rod includes pan feeding Section, compression section and homogenizing zone are cased with multiple equally distributed ring heaters, and pan feeding section, compression section on the barrel outer wall Ring heater mutual independent control corresponding with homogenizing zone corresponds to pan feeding section, compression on the cartridge heater inner wall Section and the position of homogenizing zone are mounted on thermocouple, sieve is from top to bottom respectively arranged in the hopper, be dried box and Nearly plasticizing preheating mechanism may be implemented to realize all-electric driving in the way of servo motor cooperation synchronous belt drive, improve Energy transformation ratio, response speed and the injection efficiency of melten gel injection system, at the same by hopper be arranged be dried box and Nearly plasticizing preheating mechanism, on the one hand improves the effect on moisture extraction to plastic grain, and effect on moisture extraction is up to 97%-99%, on the other hand Pre-heating temperature elevation is carried out to approaching but not reaching fusing point to plastic grain, plastic grain enters to barrel at this time, in the pan feeding of screw rod Section make very short time stop compacting after can enter compression section melt rapidly, be equivalent to shorten screw rod pan feeding section, reduce with The stemness friction of plastic grain has little influence on subsequent fusing simultaneously and compresses, and compression section and homogenizing zone molten condition more Uniformly, it to reduce the abrasion of screw rod entirety, prolongs its service life, injection molding cost is reduced while improving injection efficiency.

Further, the drying process box includes upper recess and lower protrusion, and the upper recess center, which is dug, circle Shape material-dropping hole, the lower protrusion is dug at hopper side wall there are four the arc material-dropping hole of annular array distribution, convex under described Portion upper end is fixedly connected with the more equally distributed soft items of moisture absorption, and the lower protrusion lower end is fixedly connected with thermal infrared heater, Using the central aggregation of upper recess and lower protrusion dispersibility, it can use the soft item of moisture absorption and rapidly and uniformly plastic grain carried out Dehumidifying.

Further, the soft item of the moisture absorption includes shell and filled core, the shell by hydroscopic high-molecular resin, rubber powder and Time of Fluff Slurry is mixed, and the filled core is water suction villus fiber and water-absorbing sponge, and hydroscopic high-molecular resin has extremely excellent Water imbibition and water lock, thousands of times of the own wt that weighs of moisture can be absorbed, the mistake that falls can be distributed in plastic grain It dehumidifies to it rapidly in journey, improves drying effect.

Further, the water suction villus fiber is soft, and fluffy degree is high, and fiber is thick and grows, and length is 2.7-3.0mm, Further increase the water absorption character of the soft item of moisture absorption.

Further, the nearly plasticizing preheating mechanism includes fixed ring and the equally distributed heating wire of Duo Gen, and fixed ring It is fixedly connected with hopper inner wall, anti-fall silk screen is fixedly connected in the fixed ring, the heating wire is cased with heat insulation loop, and heat-insulated Ring is welded on anti-fall silk screen, for the plastic grain that will enter in machine barrel, being rapidly and uniformly heated to close to fusing point temperature Degree.

Further, the hopper inner wall is coated with heat-reflective coating at thermal infrared heater, and the heat reflection applies Layer uses cenosphere and high refractive index TiO2 for major function pigments and fillers, and heat reflection ratio may be implemented excellent up to 80% or more The infrared heat that thermal infrared heater generates is gathered together and is improved to the heated drying effect of plastic grain by different insulation effect.

Further, the screw surface is coated with superpower wear-resistant layer, and the superpower wear-resistant layer is by nickel alloy and tungsten carbide Particle is constituted, and the diameter of tungsten carbide particle is 5um, assigns the conjugation of superpower wear-resistant layer and screw metal ontology, substantially mentions The coating density and wearability of high superpower wearing layer.

Further, the superpower wear-resistant layer uses plasma TRANSFER METHOD, by nickel alloy and tungsten carbide particle with powdered It is injected into plasma arc, is then dissolved and is sprayed on screw surface, become a kind of metallographic bonding state, improve superpower wear-resistant layer The uniformity and consolidation.

Further, it is cased with silica gel heating sheet outside the nozzle, is cased with insulation set outside the silica gel heating sheet, it is described Thermal insulation separation hot jacket is made of heat-preservation cotton, and silica gel heating sheet is using high temperature resistant, the silicon rubber that high thermal conductivity, insulation performance is good, intensity is good Soft electric heating film element made of glue, fibre reinforced materials resistant to high temperature and metal heating film circuit set, by two glass Silica gel glass fabric made of glass fiber cloth and biplate pressure silica gel conjunction system is constituted, since for thin sheet products, it has very well for it Flexibility, can be in close contact completely with nozzle body, for molten plastic heating and thermal insulation, thermal insulation separation hot jacket play heat preservation and The effect for preventing technical staff from scalding.

Further, the hopper lower end, which is dug, annular groove, and muti-piece electromagnet, the electricity are equipped in the annular groove Collection box is equipped on the downside of magnet, the collection box includes crumb loading portion and handle portion, and handle portion through hopper and extends to hopper The iron filings that are mingled in plastic grain are collected for removing in outside, and iron filings accidentally enter the abrasion pole after barrel to barrel and screw rod Greatly, therefore go scrap iron removing necessary.

3. beneficial effect

Compared with the prior art, the present invention has the advantages that

(1) this programme may be implemented to realize all-electric driving in the way of servo motor cooperation synchronous belt drive, mention Energy transformation ratio, response speed and the injection efficiency of high melten gel injection system, while box is dried by being arranged in hopper With nearly plasticizing preheating mechanism, the effect on moisture extraction to plastic grain is on the one hand improved, effect on moisture extraction is up to 97%-99%, another party Pre-heating temperature elevation is carried out to approaching but not reaching fusing point in face of plastic grain, and plastic grain enters to barrel at this time, in entering for screw rod The stop that material section makees very short time can enter compression section after being compacted and melt rapidly, be equivalent to the pan feeding section for shortening screw rod, reduce Have little influence on subsequent fusing compression simultaneously with the friction of the stemness of plastic grain, and compression section and homogenizing zone molten condition compared with It to be uniform, to reduce the abrasion of screw rod entirety, prolongs its service life, injection molding cost is reduced while improving injection efficiency.

(2) being dried box includes upper recess and lower protrusion, and upper recess center, which is dug, round material-dropping hole, lower protrusion It is dug at hopper side wall there are four the arc material-dropping hole of annular array distribution, lower protrusion upper end is fixedly connected with more uniformly The soft item of the moisture absorption of distribution, lower protrusion lower end are fixedly connected with thermal infrared heater, convex under using the central aggregation of upper recess Portion's dispersibility, can use the soft item of moisture absorption and rapidly and uniformly dehumidifies to plastic grain.

(3) the soft item of moisture absorption includes shell and filled core, and shell is mixed by hydroscopic high-molecular resin, rubber powder and Time of Fluff Slurry and made At, filled core is water suction villus fiber and water-absorbing sponge, and hydroscopic high-molecular resin has extremely excellent water imbibition and water lock, Thousands of times of the own wt that weighs of moisture can be absorbed, it can be removed rapidly during plastic grain is distributed and falls It is wet, improve drying effect.

(4) water suction villus fiber is soft, and fluffy degree is high, and fiber is thick and grows, and length is 2.7-3.0mm, is further increased The water absorption character of the soft item of moisture absorption.

(5) closely plasticizing preheating mechanism includes fixed ring and the equally distributed heating wire of Duo Gen, and fixed ring and hopper inner wall It is fixedly connected, anti-fall silk screen is fixedly connected in fixed ring, heating wire is cased with heat insulation loop, and heat insulation loop is welded on anti-fall silk screen On, for being rapidly and uniformly heated to close to melting temperature to the plastic grain that will enter in machine barrel.

(6) hopper inner wall is coated with heat-reflective coating at thermal infrared heater, and heat-reflective coating uses cenosphere It is major function pigments and fillers with high refractive index TiO2, excellent insulation effect may be implemented up to 80% or more in heat reflection ratio, will The infrared heat that thermal infrared heater generates, which gathers together, to be improved to the heated drying effect of plastic grain.

(7) screw surface is coated with superpower wear-resistant layer, and superpower wear-resistant layer is made of nickel alloy and tungsten carbide particle, and is carbonized The diameter of tungsten particle is 5um, assigns the conjugation of superpower wear-resistant layer and screw metal ontology, greatly improves the painting of superpower wear-resistant layer Layer density and wearability.

(8) superpower wear-resistant layer uses plasma TRANSFER METHOD, by nickel alloy and tungsten carbide particle with it is powdered be injected into etc. from In subarc, be then dissolved and be sprayed on screw surface, become a kind of metallographic bonding state, improve superpower wear-resistant layer the uniformity and Consolidation.

(9) it is cased with silica gel heating sheet outside nozzle, is cased with insulation set outside silica gel heating sheet, thermal insulation separation hot jacket is by heat-preservation cotton It is made, silica gel heating sheet is using high temperature resistant, the silicon rubber that high thermal conductivity, insulation performance is good, intensity is good, fiber reinforcement resistant to high temperature Soft electric heating film element made of material and metal heating film circuit set presses silica gel by two glass fabrics and biplate Silica gel glass fabric made of system is closed to constitute, it, can be with nozzle since for thin sheet products, it has good flexibility for it Body is in close contact completely, for molten plastic heating and thermal insulation, thermal insulation separation hot jacket to play heat preservation and prevents technical staff from scalding Effect.

(10) hopper lower end, which is dug, annular groove, and muti-piece electromagnet is equipped in annular groove, is equipped with and collects on the downside of electromagnet Box, collection box includes crumb loading portion and handle portion, and handle portion through hopper and extends on the outside of hopper, collects plastics for removing The iron filings being mingled in particle, iron filings accidentally enter very big to the abrasion of barrel and screw rod after barrel, therefore going scrap iron removing to have very much must It wants.

Detailed description of the invention

Fig. 1 is the structural diagram of the present invention；

Fig. 2 is the structural schematic diagram of barrel section of the present invention；

Fig. 3 is the structural schematic diagram of hopper section of the present invention；

Fig. 4 is the structural schematic diagram in Fig. 3 at A；

Fig. 5 is the structural schematic diagram that the present invention is dried box part；

Fig. 6 is the bottom view that the present invention is dried box part；

Fig. 7 is the structural schematic diagram of the soft item part of moisture absorption of the present invention；

Fig. 8 is the structural schematic diagram of the nearly plasticizing preheating mechanism part of the present invention.

Figure label explanation:

1 melten gel driving mechanism, 2 injection driving mechanisms, 3 injection molding consoles, 4 hoppers, 5 machine barrels, 501 barrels, 502 screw rods, 503 nozzles, 6 cartridge heaters, 7 ring heaters, 8 thermocouples, 9 drying process boxes, 901 upper recess, 902 lower protrusions, 10 moisture absorptions are soft Item, 11 thermal infrared heaters, 12 fixed rings, 13 electromagnet, 14 collection boxes, 15 heating wire, 16 silica gel heating sheets, 17 insulations Set, 18 sieves.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description；Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments, is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "inner", "outside", " top/bottom end " Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand For indication or suggestion relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set Be equipped with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to removable Connection is unloaded, or is integrally connected, can be mechanical connection, is also possible to be electrically connected, can be directly connected, it can also be in Between medium be indirectly connected, can be the connection inside two elements, for the ordinary skill in the art, can be specific Situation understands the concrete meaning of above-mentioned term in the present invention.

Embodiment 1:

Referring to Fig. 1, a kind of electric synchronous belt melten gel injection system, including injection molding console 3, hopper 4 and machine barrel 5, Machine barrel 5 includes barrel 501, screw rod 502 and nozzle 503, and injection molding console 3 is connected with melten gel driving mechanism 1 and injection driving machine Structure 2, melten gel driving mechanism 1 include melten gel servo motor, melten gel pinion gear, melten gel synchronous belt, melten gel gear wheel, transmission shaft, and Melten gel servo motor passes sequentially through melten gel pinion gear, melten gel synchronous belt, melten gel gear wheel, transmission shaft and screw rod 502 is driven to rotate, benefit Plastics are completed with 502 perficial helical structure of screw rod to be continuously conveyed, complete melten gel plasticizing movement, and injection driving mechanism 2 includes injection Servo motor, injection pinion gear, injection synchronous belt, injection gear wheel, ball screw, feed screw nut, pressure sensor, synchronization Bar, and injection servo motor passes sequentially through injection pinion gear, injection synchronous belt, injection gear wheel and drives ball screw turns, silk Thick stick nut is connect by synchronizing bar with screw rod 502, and pressure sensor is mounted on feed screw nut, in silk after ball screw turns Under the transmission cooperation of thick stick nut, injection movement is completed by synchronizing bar lead-screw 502.

Referring to Fig. 2, screw rod 502 includes pan feeding section, compression section and homogenizing zone, it is cased on 501 outer wall of barrel multiple uniform The ring heater 7 of distribution, and pan feeding section, compression section and the independent control between each other of the corresponding ring heater 7 of homogenizing zone System, 502 surface of screw rod are coated with superpower wear-resistant layer, and superpower wear-resistant layer is made of nickel alloy and tungsten carbide particle, and tungsten carbide The diameter of grain is 5um, assigns the conjugation of superpower wear-resistant layer and 502 metal body of screw rod, greatly improves the painting of superpower wear-resistant layer Layer density and wearability, superpower wear-resistant layer use plasma TRANSFER METHOD, nickel alloy and tungsten carbide particle are injected into powdered It in plasma arc, is then dissolved and is sprayed on 502 surface of screw rod, become a kind of metallographic bonding state, improve superpower wear-resistant layer The uniformity and consolidation, the position that pan feeding section, compression section and homogenizing zone are corresponded on 6 inner wall of cartridge heater are mounted on thermocouple 8, enter After expecting that section is used for plastics from hopper 4 into machine barrel 5, in the case where the screw rod 502 of rotation acts on, pass through 501 inner wall of barrel and screw rod spiral shell The rubbing action on 502 surface of bar is fed forward and is compacted, and compression section plastics are heated by the outside from barrel 501 and screw rod 502 with barrel 501 it is strong stirring, mix and shear the effects of, start to melt, with progradation, liquid phase is continuously increased, and Solid phase is constantly reduced, until the end of melting zone, plastics whole or the overwhelming majority, which switch to glue, stays state, homogenizing zone further moulds plastics Change, and squeezed out from barrel 501 with being allowed to level pressure, quantitative and fixed temperature, silica gel heating sheet 16, silica gel heating are cased with outside nozzle 503 Insulation set 17 is cased with outside piece 16, thermal insulation separation hot jacket 17 is made of heat-preservation cotton, and silica gel heating sheet 16 is led using high temperature resistant, height Made of heat, silicon rubber, fibre reinforced materials resistant to high temperature and the metal heating film circuit set that insulation performance is good, intensity is good Soft electric heating film element is closed silica gel glass fabric made of system and is constituted by two glass fabrics and biplate pressure silica gel, by In it be thin sheet products standard thickness be 1.5mm it have good flexibility, can closely be connect completely with 503 body of nozzle Touching, for molten plastic heating and thermal insulation, thermal insulation separation hot jacket 17 to play the role of keeping the temperature and prevent technical staff from scalding.

Fig. 3, Fig. 5 and Fig. 6 are please referred to, sieve 18 is from top to bottom respectively arranged in hopper 4, is dried box 9 and nearly modeling Change preheating mechanism, sieve 18 is used to stop the unexpected foreign matter, such as metal block, key, stone etc. being mixed into plastic grain, dry Handle box 9 includes upper recess 901 and lower protrusion 902, and 901 center of upper recess, which is dug, round material-dropping hole, and lower protrusion 902 is leaned on Nearly 4 side-walls of hopper are dug there are four the arc material-dropping hole of annular array distribution, and lower 902 upper end of protrusion is fixedly connected with more The soft item 10 of the moisture absorption of even distribution, lower 902 lower end of protrusion are fixedly connected with thermal infrared heater 11, utilize the center of upper recess 901 902 dispersibility of aggregation and lower protrusion, can use the soft item 10 of moisture absorption and rapidly and uniformly dehumidifies to plastic grain, hopper 4 Inner wall is coated with heat-reflective coating at thermal infrared heater 11, and heat-reflective coating uses cenosphere and high refractive index TiO2 For major function pigments and fillers, excellent insulation effect is may be implemented up to 80% or more in heat reflection ratio, by thermal infrared heater 11 The infrared heat of generation, which gathers together, to be improved to the heated drying effect of plastic grain.

Referring to Fig. 7, the soft item 10 of moisture absorption includes shell and filled core, shell is by hydroscopic high-molecular resin, rubber powder and villus Slurry is mixed, and filled core is water suction villus fiber and water-absorbing sponge, and hydroscopic high-molecular resin has extremely excellent water imbibition With water lock, thousands of times of the own wt that weighs of moisture can be absorbed, it can be during plastic grain be distributed and falls rapidly It dehumidifies to it, improves drying effect, water suction villus fiber is soft, and fluffy degree is high, and fiber is thick and grows, and length is 2.7- 3.0mm further increases the water absorption character of the soft item 10 of moisture absorption.

Referring to Fig. 8, closely plasticizing preheating mechanism includes fixed ring 12 and the equally distributed heating wire 15 of Duo Gen, and fixed ring 12 are fixedly connected with 4 inner wall of hopper, and anti-fall silk screen is fixedly connected in fixed ring 12, and heating wire 15 is cased with heat insulation loop, and heat-insulated Ring is welded on anti-fall silk screen, for the plastic grain that will enter in machine barrel 5, being rapidly and uniformly heated to close to fusing point temperature Degree.

Referring to Fig. 4,4 lower end of hopper, which is dug, annular groove, muti-piece electromagnet 13 is installed in annular groove, under electromagnet 13 Side is equipped with collection box 14, and collection box 14 includes crumb loading portion and handle portion, and handle portion through hopper 4 and extends to 4 outside of hopper, The iron filings that are mingled in plastic grain are collected for removing, iron filings accidentally enter the mill after barrel 501 to barrel 501 and screw rod 502 Damage greatly, therefore goes scrap iron removing necessary.

The present invention may be implemented to realize all-electric driving in the way of servo motor cooperation synchronous belt drive, improve Energy transformation ratio, response speed and the injection efficiency of melten gel injection system: melten gel servo motor passes sequentially through melten gel pinion gear, melts Glue synchronous belt, melten gel gear wheel, transmission shaft drive screw rod 502 to rotate, and it is continuous to complete plastics using 502 perficial helical structure of screw rod Melten gel plasticizing movement is completed in conveying；Injection servo motor passes sequentially through injection pinion gear, injection synchronous belt, injection gear wheel band Dynamic ball screw turns are completed after ball screw turns under the transmission cooperation of feed screw nut by synchronizing bar lead-screw 502 Injection movement.

It is dried box 9 and nearly plasticizing preheating mechanism by being arranged in hopper simultaneously, is on the one hand improved to plastic grain Effect on moisture extraction, effect on moisture extraction is up to 97%-99%: plastic grain is assembled in upper recess 901 dropped down by round material-dropping hole under Protrusion 902, then dispersed by lower protrusion 902, it comes into full contact with and removes with the soft item 10 of moisture absorption during lower 902 cambered surface of protrusion tumbles It is wet, further removal moisture drying is evenly heated by 11 360 deg of thermal infrared heater after falling in four arc material-dropping holes, Utilize air flowing and the rapid removal moisture drying of high temperature.

On the other hand pre-heating temperature elevation is carried out to close but do not reach fusing point to plastic grain: passes through fixed ring in plastic grain When 12, from when passing through between more heating wire 15 in dropping process, it is heated to the temperature close to fusing point rapidly, and preheat and rise Temperature is visibly homogeneous, is less prone to the even situation of uneven heating, plastic grain enters to barrel at this time, in the pan feeding section of screw rod 502 Make very short time stop compacting after can enter compression section melt rapidly, be equivalent to shorten screw rod 502 pan feeding section, reduce with The stemness friction of plastic grain has little influence on subsequent fusing simultaneously and compresses, and compression section and homogenizing zone molten condition more Uniformly, it to reduce the whole abrasion of screw rod 502, prolongs its service life, injection molding cost is reduced while improving injection efficiency.

The foregoing is intended to be a preferred embodiment of the present invention；But scope of protection of the present invention is not limited thereto. Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its It improves design and is subject to equivalent substitution or change, should be covered by the scope of protection of the present invention.

Claims (10)

1. a kind of electric synchronous belt melten gel injection system, including injection molding console (3), hopper (4) and machine barrel (5), the machine Cylinder (5) includes barrel (501), screw rod (502) and nozzle (503), it is characterised in that: the injection molding console (3) is connected with molten Glue driving mechanism (1) and injection driving mechanism (2), the melten gel driving mechanism (1) include melten gel servo motor, the small tooth of melten gel Wheel, melten gel synchronous belt, melten gel gear wheel, transmission shaft, and melten gel servo motor pass sequentially through melten gel pinion gear, melten gel synchronous belt, Melten gel gear wheel, transmission shaft drive screw rod (502) rotation, and the injection driving mechanism (2) includes that injection servo motor, injection are small Gear, injection synchronous belt, injection gear wheel, ball screw, feed screw nut, pressure sensor, synchronizing bar, and injection servo motor It passes sequentially through injection pinion gear, injection synchronous belt, injection gear wheel and drives ball screw turns, the feed screw nut passes through synchronization Bar is connect with screw rod (502), and pressure sensor is mounted on feed screw nut, and the screw rod (502) includes pan feeding section, compression section And homogenizing zone, be cased with multiple equally distributed ring heaters (7) on barrel (501) outer wall, and pan feeding section, compression section and The corresponding ring heater of homogenizing zone (7) mutual independent control, correspond on cartridge heater (6) inner wall pan feeding section, Compression section and the position of homogenizing zone are mounted on thermocouple (8), are from top to bottom respectively arranged with sieve in the hopper (4) (18), box (9) and nearly plasticizing preheating mechanism are dried.

2. a kind of electric synchronous belt melten gel injection system according to claim 1, it is characterised in that: the drying process Box (9) includes upper recess (901) and lower protrusion (902), and upper recess (901) center, which is dug, round material-dropping hole, institute Stating lower protrusion (902), there are four the arc material-dropping hole of annular array distribution, the lower protrusions close to the cutting of hopper (4) side-walls (902) upper end is fixedly connected with the more equally distributed soft items of moisture absorption (10), and lower protrusion (902) lower end is fixedly connected with heat Infrared heater (11).

3. a kind of electric synchronous belt melten gel injection system according to claim 2, it is characterised in that: the soft item of moisture absorption It (10) include shell and filled core, the shell is mixed by hydroscopic high-molecular resin, rubber powder and Time of Fluff Slurry, the filled core For water suction villus fiber and water-absorbing sponge.

4. a kind of electric synchronous belt melten gel injection system according to claim 3, it is characterised in that: the water suction villus Fiber softening, fluffy degree is high, and fiber is thick and grows, and length is 2.7-3.0mm.

5. a kind of electric synchronous belt melten gel injection system according to claim 1, it is characterised in that: the nearly plasticizing is pre- Heat engine structure includes fixed ring (12) and more equally distributed heating wire (15), and fixed ring (12) is fixed with hopper (4) inner wall Connection, the fixed ring (12) is interior to be fixedly connected with anti-fall silk screen, and the heating wire (15) is cased with heat insulation loop, and heat insulation loop is welded On anti-fall silk screen.

6. a kind of electric synchronous belt melten gel injection system according to claim 1, it is characterised in that: the hopper (4) Inner wall is coated with heat-reflective coating at thermal infrared heater (11), and the heat-reflective coating is using cenosphere and high refraction Rate TiO2 is major function pigments and fillers.

7. a kind of electric synchronous belt melten gel injection system according to claim 1, it is characterised in that: the screw rod (502) surface is coated with superpower wear-resistant layer, and the superpower wear-resistant layer is made of nickel alloy and tungsten carbide particle, and tungsten carbide particle Diameter be 5um.

8. a kind of electric synchronous belt melten gel injection system according to claim 7, it is characterised in that: the superpower wear-resistant Layer uses plasma TRANSFER METHOD.

9. a kind of electric synchronous belt melten gel injection system according to claim 1, it is characterised in that: the nozzle (503) it is cased with silica gel heating sheet (16) outside, insulation set (17), the insulation is cased with outside the silica gel heating sheet (16) Set (17) is made of heat-preservation cotton.

10. a kind of electric synchronous belt melten gel injection system according to claim 1, it is characterised in that: the hopper (4) Lower end, which is dug, annular groove, is equipped in the annular groove muti-piece electromagnet (13), is equipped with and collects on the downside of the electromagnet (13) Box (14), the collection box (14) includes crumb loading portion and handle portion, and handle portion through hopper (4) and extends to hopper (4) outside Side.