CN111823498A

CN111823498A - Vertical injection molding machine

Info

Publication number: CN111823498A
Application number: CN202010694866.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-18
Filing date: 2020-07-18
Publication date: 2020-10-27

Abstract

The invention relates to the technical field of injection molding equipment, and discloses a vertical injection molding machine, which comprises a feeding pipe, wherein the upper part of the upper end of the feeding pipe is fixedly connected with the inner side of a feeding hopper, four groups of grooves are arranged on the upper part of the inner side of the feeding pipe, iron cores are fixedly arranged in the four groups of grooves, spiral coils are arranged on the outer sides of the iron cores, through the arrangement of a discharging port and a rotary valve, a feeding pipe can be sealed when plastic particles are heated in advance in the feeding pipe, the plastic particles enter a gun barrel for injection molding production after being completely heated, volatile substances and water in the plastic particles are fully evaporated, the quality of a product is improved, meanwhile, refractory impurities in the plastic particles are conveniently filtered by a filter screen, when the discharging port is blocked due to the accumulation of larger impurities or other factors, the discharging port can be easily and simply, the operation is simple, the insoluble impurities are prevented from entering the injection molding machine, and the production efficiency is improved.

Description

Vertical injection molding machine

Technical Field

The invention relates to the technical field of injection molding equipment, in particular to a vertical injection molding machine.

Background

An injection molding machine generally comprises an injection system, a mold closing system, a hydraulic transmission system, an electrical control system, a lubricating system, a heating and cooling system, a safety monitoring system and the like, and the working process of the injection molding machine is as follows: the material powder or particles to be injected are fed into the gun barrel through the feed hopper, extruded and crushed through the rotation of the screw rod at the front end of the gun barrel and pushed forward, the material powder or particles are melted through the electromagnetic heater at the middle section of the gun barrel, and after a certain amount of plastic is heated and plasticized within a specified time, the melted plastic is injected into the mold cavity through the screw rod under a certain pressure and speed.

However, the prior injection molding machines often have some difficulties in working: firstly, as plastic particles are melted in the middle section in the barrel, and in the actual production process, metal particles such as scrap iron and refractory particles are mixed in the plastic particles injected by a factory, if the scrap iron and the particles cannot be processed in time, the direct injection of the plastic particles into the inner cavity of the injection molding machine can not only affect the quality and the service performance of products, but also some larger scrap iron can increase the friction between a screw and the inner wall of the barrel, damage the barrel and the screw, even cause the blockage of a glue injection port and a feed port, and need to close equipment for maintenance and detection, thereby not only seriously affecting the production progress, but also reducing the service life of the equipment, the prior patent No. CN201821142343 adopts an electromagnet to adsorb and remove the scrap iron, but the method can easily cause the accumulation of the scrap iron adsorbed on the surface of an inclined magnetic conductive plate, and the accumulation of powder entering from the back above the scrap iron of the magnetic conductive plate, and simultaneously remove part of powder while removing scrap iron in the follow-up process, thereby causing the waste of materials; secondly, plastic particles inevitably have some volatile substances and have too high water content, which can cause the rubber shortage, the formation of vacuoles and spots during the filling of the mould, and cause the quality of the produced product to be not over-qualified, thereby affecting the quality of the product.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the vertical injection molding machine which has the advantages of high product quality and capability of avoiding the damage of impurities in the gun barrel to the injection molding machine, and solves the problems in the background technology.

The invention provides the following technical scheme: a vertical injection molding machine comprises an inlet pipe, wherein the upper end of the inlet pipe is fixedly connected with a feed hopper, four groups of grooves are formed in the upper part of the inner side of the inlet pipe, an iron core is fixedly arranged in each of the four groups of grooves, the outer side of the iron core is provided with a spiral coil, the left side of the iron core is in contact with a magnetic conduction plate fixedly arranged on the outer side of the groove, a receiving groove fixedly connected to the inner side of the inlet pipe is arranged below the magnetic conduction plate, the upper end of the receiving groove is fixedly connected with a hinge, the upper end of the hinge is fixedly connected with an iron elastic sheet, the upper part of the inlet pipe is provided with a through hole communicated with the bottom of the receiving groove, the middle part of the outer side of the inlet pipe is fixedly provided with a heater, the bottom of the heater is provided with a reset cavity, two sets of the equal activity in inside of installation cavity has cup jointed the gag lever post, two the equal fixedly connected with in the outside of gag lever post draws the ball, the middle part fixedly connected with fixed mounting of gag lever post has the elastic component in the installation cavity inside, the bottom activity of surveying in the feed pipe has cup jointed the discharge gate, the rectangular channel has all been seted up to the both sides of discharge gate, the inside fixed mounting of discharge gate has the filter screen.

Preferably, the outer surface of the magnetic conduction plate is parallel to the inner wall of the feeding pipe, and the back surface of the magnetic conduction plate is tightly attached to the iron core.

Preferably, the iron elastic sheet is a rectangular hard elastic sheet, and the iron elastic sheet is arranged in a bending mode on one side close to the inner wall of the feeding pipe.

Preferably, the heater is an electromagnetic induction heater.

Preferably, the limiting rod is of a cross structure, and the inner side section of the limiting rod is matched with the rectangular groove and is at the same height.

Preferably, the through hole is a straight notch through hole, the through hole is arranged at an inclined angle, and a receiving hopper can be arranged outside the through hole.

Preferably, the rotary valve comprises a cylindrical head, one end of the cylindrical head is fixedly connected with a valve plate, one end of the valve plate is fixedly connected with a valve rod, one end of the valve rod is fixedly connected with a rotary ring, a right side of the middle part of the valve rod is fixedly connected with a limiting ring, and the front side and the back side of the valve plate are designed in a circular arc mode.

Preferably, the upper end of the discharge hole is provided with a high-temperature-resistant square sealing ring.

The invention has the following beneficial effects:

1. the iron spring plate is arranged at one side close to the inner wall of the feeding pipe in a bending way, when the magnetic conduction plate is magnetized to adsorb metal particles, because the retaining ring is arranged above the magnetic conduction plate, and the magnetic conduction plate is arranged in the vertical direction, powder falling from the upper side can not contact the magnetic conduction plate, the magnetic conduction plate can not cause the powder to be accumulated above scrap iron while normally adsorbing scrap iron, not only can not cause the waste of materials, but also can not influence the normal feeding, the iron spring plate can simultaneously receive the attraction force of the magnetic conduction plate, so that the upper end of the iron spring plate is contacted with the magnetic conduction plate, plastic particles are prevented from falling into the bearing groove to cause the waste of plastic materials, when the feeding is not needed after the injection molding is finished, the spiral coil is powered off, the magnetic conduction plate loses magnetism, the iron spring plate restores the original shape under the self elasticity and is far away from the magnetic conduction plate, and simultaneously, the metal particles such as, avoiding the metal particles such as scrap iron and the like from entering the injection molding machine.

2. Through the discharge gate, the setting of change valve, can seal the inlet tube when plastic granules heats in advance inside the inlet pipe, make the plastic granules heating reentrant barrel after complete carry out the production of moulding plastics, ensure wherein volatile substance and moisture fully evaporate, improve the quality of product, the filter screen of being convenient for simultaneously filters wherein infusibility impurity, when piling up great impurity or other factors at the discharge gate and leading to the discharge gate to block up, only need close change valve alright through the light simple and convenient dismantlement discharge gate of staff clear up or change, do not need the shutdown processing, easy operation, indissolvability impurity entering injection molding machine has been avoided, and production efficiency has been improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a rotary valve according to the present invention;

FIG. 3 is a schematic view of the present invention;

FIG. 4 is a schematic view of the discharge port of the present invention.

In the figure: 1. a feed pipe; 2. a feed hopper; 3. a groove; 4. an iron core; 5. a helical coil; 6. a magnetic conductive plate; 7. a receiving groove; 8. a hinge; 9. an iron spring plate; 10. a through hole; 11. a heater; 12. a reset chamber; 13. rotating the valve; 1301. a cylindrical head; 1302. a valve plate; 1303. a valve stem; 1304. rotating the ring; 1305. a limiting ring; 14. a torsion spring; 15. a mounting cavity; 16. a limiting rod; 17. pulling a ball; 18. an elastic member; 19. a discharge port; 20. a rectangular groove; 21. and (4) a filter screen.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a vertical injection molding machine comprises a feeding pipe 1, a feeding hopper 2 is fixedly connected to the upper end of the feeding pipe 1, four groups of grooves 3 are formed in the upper portion of the inner side of the feeding pipe 1, iron cores 4 are fixedly installed in the four groups of grooves 3, a spiral coil 5 is arranged on the outer side of each iron core 4, the left side of each iron core 4 is in contact with a magnetic conductive plate 6 fixedly installed on the outer side of each groove 3, a receiving groove 7 fixedly connected to the inner side of the feeding pipe 1 is arranged below each magnetic conductive plate 6, a hinge 8 is fixedly connected to the upper end of each receiving groove 7, an iron spring plate 9 is fixedly connected to the upper end of each hinge 8, a through hole 10 communicated with the bottom of each receiving groove 7 is formed in the upper portion of the feeding pipe 1, a heater 11 is fixedly installed in the middle portion of the outer side of the feeding pipe 1, two sets of symmetry installation cavities 15 have been seted up to inlet pipe 1's bottom, gag lever post 16 has been cup jointed in the equal activity in inside of two sets of installation cavities 15, the equal fixedly connected with in the outside of two gag lever posts 16 draws ball 17, the middle part fixedly connected with fixed mounting of gag lever post 16 has elastic component 18 in installation cavity 15 inside, the bottom activity of surveying in inlet pipe 1 has cup jointed discharge gate 19, rectangular channel 20 has all been seted up to discharge gate 19's both sides, the inside fixed mounting of discharge gate 19 has filter screen 21.

Wherein, the outer surface of the magnetic conduction plate 6 is parallel to the inner wall of the feeding pipe 1, the back of the magnetic conduction plate 6 is closely attached to the iron core 4, when the spiral coil 5 is electrified, an electromagnetic field is formed to magnetize the iron core 4 and the magnetic conduction plate 6 closely attached to the iron core 4, at this time, the magnetic conduction plate 6 has magnetism, when plastic particles fall from the feeding hopper 2 into the barrel, the metal particles therein can be attracted by the magnetic conduction plate 6 and adhered to the surface of the magnetic conduction plate 6, thereby preventing the metal particles such as iron filings from entering the barrel, solving the problems of adverse effect of the metal particles on the product quality and the abrasion and blockage of the injection molding machine, because the retaining ring is arranged above the magnetic conduction plate 6, and the magnetic conduction plate 6 is arranged in the vertical direction, the powder falling from the top can not contact with the magnetic conduction plate 6, the magnetic conduction plate 6 can not cause the powder to be accumulated above the iron filings when, not only can not cause the waste of materials, but also can not influence the normal feeding.

Wherein, iron shell fragment 9 is the rectangle stereoplasm shell fragment, iron shell fragment 9 is being and is being close to the crooked setting in one side of inlet pipe 1 inner wall, when magnetic conduction plate 6 is magnetized and carries out metal particulate matter and adsorb, iron shell fragment 9 also can receive magnetic conduction plate 6's appeal simultaneously, make the upper end of iron shell fragment 9 and magnetic conduction plate 6 contact, prevent that plastic granules from falling into and accepting the groove 7, cause plastic material's waste, when the completion back of moulding plastics does not need the feeding, spiral coil 5 outage, magnetic conduction plate 6 loses magnetism this moment, at this moment iron shell fragment 9 reconversion under self elasticity, magnetic conduction plate 6 is kept away from to its upper end, metal particles such as iron fillings that magnetic conduction plate 6 surface adsorption simultaneously enter and receive the gravity influence and drop and accept the groove 7, avoid metal particles such as iron fillings to get into.

Wherein, heater 11 is the electromagnetic induction heater, can heat in advance to the plastics that will mould plastics through heater 11 and melt, can volatilize volatile matter wherein in advance, reduce its water content, can effectually avoid plastic granules appear the bubble in the glue solution when barrel middle section heating, ensure the production quality of product, melt plastic granules simultaneously in advance, can be convenient for filter screen 21 filters the infusibility granule wherein, it gets into the injection molding machine and causes the problem of injection molding machine wearing and tearing and jam to solve infusibility granule, and the quality of product has been improved.

Wherein, gag lever post 16 is the cross structure, the inboard cross-section of gag lever post 16 just is in same height with 20 looks adaptations of rectangular channel, because discharge gate 19 is through cup jointing with the activity of inlet pipe 1, setting through gag lever post 16, can fix discharge gate 19, can not lead to the fact the influence to the normal work of feeder hopper 2, and when discharge gate 19 blocks up or filterable impurity particle is more, draw ball 17 through outwards drawing and can make gag lever post 16 pull out from rectangular channel 20, only need only to clear up or change discharge gate 19 alright continue work this moment, can not lead to the fact the influence to the normal production progress of injection molding machine.

Wherein, through-hole 10 is straight notch opening through-hole, and through-hole 10 is inclination setting, and the through-hole 10 outside can set up and connect the hopper, accomplishes the back at the feeding, loses magnetic conduction board 6 and avoids absorbent metal particulate matter can directly drop to connect the groove 7 in to discharge from through-hole 10 is outside under the action of gravity, the light simple handling impurity of people of being convenient for, need not unpack apart complicated processes such as inlet pipe 1.

Wherein, the rotary valve 13 comprises a cylindrical head 1301, one end of the cylindrical head 1301 is fixedly connected with a valve plate 1302, one end of the valve plate 1302 is fixedly connected with a valve rod 1303, one end of the valve rod 1303 is fixedly connected with a rotary ring 1304, the right side of the middle part of the valve rod 1303 is fixedly connected with a limiting ring 1305, the front and the back of the valve plate 1302 are designed in an arc shape, through the arrangement of the rotary valve 13, the feeding pipe 1 can be closed when plastic particles are heated in advance in the feeding pipe 1, the plastic particles are completely heated and then enter a gun barrel for injection molding production, volatile substances and water in the plastic particles are ensured to be fully evaporated, the quality of the product is improved, meanwhile, the filter screen 21 is convenient for filtering the insoluble impurities in the plastic particles, when the discharge port 19 is blocked due to accumulation of more impurities or other factors, the discharge port 19 can be easily and simply detached for, the injection molding machine has the advantages that the machine does not need to be stopped, the operation is simple, the insoluble impurities are prevented from entering the injection molding machine, the production efficiency is improved, the rotary valve 13 in a natural state is in a normally closed state under the action of the torsion spring 14, and the dust impurities can be prevented from entering the injection molding machine.

Wherein, the upper end of discharge gate 19 is provided with high temperature resistant square seal, can prevent that the glue solution of high temperature from revealing from discharge gate 19 and the laminating department of inlet pipe 1, has not only guaranteed the leakproofness of inlet pipe, ensures that discharge gate 19 and inlet pipe 1 normally work, avoids appearing the waste of material simultaneously.

The working principle is that when the spiral coil 5 is electrified, an electromagnetic field is formed to magnetize the iron core 4 and the magnetic conduction plate 6 tightly attached to the iron core 4, at the moment, the magnetic conduction plate 6 has magnetism, when plastic particles fall from the feed hopper 2 and enter the barrel, the metal particles can be attracted by the magnetic conduction plate 6 and adhered to the surface of the magnetic conduction plate 6, the falling plastic is melted under the action of the heater 11, volatile substances and moisture in the plastic particles are fully volatilized, the melted glue solution is filtered by the filter screen 21, a worker can easily and simply detach the discharge port 19 to clean or replace the plastic particles by closing the rotary valve 13, shutdown processing is not needed, operation is simple, and the production efficiency and the product quality of the injection molding machine can be improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vertical injection molding machine, includes inlet pipe (1), the upper end fixedly connected with feeder hopper (2) of inlet pipe (1), its characterized in that: four groups of grooves (3) are arranged on the inner upper portion of the inlet pipe (1), four groups of iron cores (4) are fixedly arranged on the inner portion of the grooves (3), spiral coils (5) are arranged on the outer side of the iron cores (4), the left side of each iron core (4) is in contact with a magnetic conduction plate (6) fixedly arranged on the outer side of each groove (3), a bearing groove (7) fixedly connected to the inner side of the inlet pipe (1) is arranged below the magnetic conduction plate (6), a hinge (8) is fixedly connected to the upper end of the bearing groove (7), an iron elastic sheet (9) is fixedly connected to the upper end of the hinge (8), a through hole (10) communicated with the bottom of the bearing groove (7) is arranged on the upper portion of the inlet pipe (1), a heater (11) is fixedly arranged on the middle portion of the outer side of the inlet pipe (1), and a, the inside activity of chamber (12) resets has cup jointed changes valve (13), the outer lane of changeing valve (13) one end has cup jointed torsional spring (14), two sets of symmetry installation cavity (15) have been seted up to the bottom of inlet pipe (1), and are two sets of gag lever post (16), two have been cup jointed in the equal activity in inside of installation cavity (15) the equal fixedly connected with in outside of gag lever post (16) draws ball (17), the middle part fixedly connected with fixed mounting of gag lever post (16) is at inside elastic component (18) of installation cavity (15), discharge gate (19) have been cup jointed in the bottom activity of surveying in inlet pipe (1), rectangular channel (20) have all been seted up to the both sides of discharge gate (19), the inside fixed mounting of discharge gate (19) has filter screen (21).

2. The vertical injection molding machine of claim 1, wherein: the surface of magnetic conduction board (6) is parallel with the inner wall of inlet pipe (1), the back and iron core (4) of magnetic conduction board (6) closely laminate.

3. The vertical injection molding machine of claim 1, wherein: the iron elastic sheet (9) is a rectangular hard elastic sheet, and the iron elastic sheet (9) is arranged on one side of the inner wall of the feeding pipe (1) in a bending mode.

4. The vertical injection molding machine of claim 1, wherein: the heater (11) is an electromagnetic induction heater.

5. The vertical injection molding machine of claim 1, wherein: the limiting rod (16) is of a cross-shaped structure, and the inner side section of the limiting rod (16) is matched with the rectangular groove (20) and is located at the same height.

6. The vertical injection molding machine of claim 1, wherein: the through hole (10) is a straight notch through hole, the through hole (10) is arranged at an inclined angle, and a receiving hopper can be arranged on the outer side of the through hole (10).

7. The vertical injection molding machine of claim 1, wherein: the rotary valve (13) comprises a cylindrical head (1301), wherein a valve plate (1302) is fixedly connected to one end of the cylindrical head (1301), a valve rod (1303) is fixedly connected to one end of the valve plate (1302), a rotary ring (1304) is fixedly connected to one end of the valve rod (1303), a limiting ring (1305) is fixedly connected to the right side of the middle of the valve rod (1303), and the front side and the back side of the valve plate (1302) are designed to be circular arcs.

8. The vertical injection molding machine of claim 1, wherein: the upper end of the discharge hole (19) is provided with a high-temperature-resistant square sealing ring.