CN109591249B

CN109591249B - Injection molding machine with thick film pressure release shaft protection

Info

Publication number: CN109591249B
Application number: CN201811587847.9A
Authority: CN
Inventors: 赖德华
Original assignee: Tongxiang Jiasheng Plastic Products Co ltd
Current assignee: TONGXIANG JIASHENG PLASTIC PRODUCTS Co.,Ltd.
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2020-12-04
Anticipated expiration: 2038-12-25
Also published as: CN109591249A

Abstract

The invention discloses an injection molding machine with thick film pressure relief shaft protection, which structurally comprises: the improved automatic pressure relief device comprises a feeding box, a heating solenoid, an extruding head, a mold, a driving arm, a discharging hopper and a machine body, wherein the feeding box is vertically fixed at a feeding hole of the heating solenoid through a bolt, the heating solenoid is welded and fixed on the left side of the extruding head, the edge of the heating solenoid is processed in a seamless mode, the mold is horizontally fixed on the left side of the heating solenoid in a straight line mode, the mold is meshed with a thread of a cross rod on the right side of the driving arm through a left internal thread, in sum, the improved automatic pressure relief device controls air flow through a flow channel inside a temperature sensing variable cavity heat conduction part, controls a pressure relief shaft to discharge air in the later injection period, inhibits slurry inside the injection period, avoids the situation that the internal density cannot meet the production requirement due to excessive pressure relief, and.

Description

Injection molding machine with thick film pressure release shaft protection

Technical Field

The invention relates to an injection molding machine, in particular to an injection molding machine with thick film pressure relief shaft protection.

Background

The thermoplastic plastics or the thermosetting plastics utilize the plastics forming die to make the plastic products of various shapes, melt the plastic granules in the heating chamber through the heating head during operation, then extrude through the screw rod, but some problems still need to improve when carrying out the extrusion and just can improve work efficiency:

the excessive pressure and speed can extrude the gas in the process of moulding plastics to the condition that the compression generates heat appears, causes the too high condition that produces the scorch of plastics fluid temperature, though set up the exhaust hole in the mould inside, be sealed state in the discharge gate position, the produced temperature of discharge gate position is also the highest consequently causes the condition that plastics scorch very easily.

Disclosure of Invention

In order to solve the problems, the invention provides an injection molding machine with thick film pressure relief shaft protection.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an injection molding machine with thick film pressure release axle protection, its structure includes: pay-off case, heating solenoid, crowded stub bar, mould, actuating arm, play hopper, organism, the pay-off case passes through the feed inlet of bolt vertical fixation at the heating solenoid, heating solenoid welded fastening is on the right side of crowded stub bar and the edge through seamless processing, the mould level is fixed in the left side of heating solenoid and the two is a straight line, the mould passes through the screw thread interlock of left internal thread and actuating arm right side horizontal pole mutually, and parallels with the play hopper of bottom, it nests in the inside at the organism recess perpendicularly to go out the hopper, crowded stub bar inner structure includes: the inner pressure pore plate, the pad groove, the balancing pole and the sleeve head are pressed, the inner pressure pore plate is welded and fixed on the left side of the pad groove and forms an integral structure, the groove on the right side of the pad groove is tightly attached to the balancing pole, and the end head on the left side of the sleeve head is embedded into the inner wall of the pad groove.

As a further improvement of the invention, the internal pressure orifice plate consists of two pressing variable cogs, an intermittent pressure relief shaft and a temperature sensing variable cavity, wherein the two pressing variable cogs are parallel to the intermittent pressure relief shaft, the intermittent pressure relief shaft is arranged at the upper end and the lower end of the temperature sensing variable cavity, and the temperature sensing variable cavity is tightly attached to a sleeve head on the right side.

As a further improvement of the invention, the pressure variable cog consists of a pressure cavity, a ring gear and a pressure pipe, wherein the pressure cavity is tightly nested with the ring gear on the left side, and the pressure pipe is nested at the upper end and the lower end of the pressure cavity and is parallel to the temperature-sensing variable cavity on the left side.

As a further improvement of the invention, the intermittent pressure relief shaft consists of a rotary sleeve column, a breathable pressure plate, a starting page, a limiting valve head and a fine guide column, grooves on the periphery of the rotary sleeve column and the breathable pressure plate are mutually nested, tiny gaps exist on the edges of the grooves and the breathable pressure plate, the axis of the starting page is tightly attached to the axis of the rotary sleeve column, and the limiting valve head is welded on a bottom column of the fine guide column and is parallel to the breathable pressure plate.

As a further improvement of the invention, the temperature sensing variable cavity consists of air pipes, a balance cavity, connecting pipes, a main pipe and a variable temperature inner cavity, wherein the air pipes are arranged at two sides of the balance cavity and communicated with the central shaft of the rotary sleeve column, and the connecting pipes are arranged at the bottom of the main pipe and welded and fixed with the variable temperature inner cavity at the left side.

As a further improvement of the invention, a corrugated inner pipe is arranged inside the temperature-changing inner cavity.

As a further improvement of the invention, the pressure variable cog can be matched with the rotary sleeve column by the ring teeth under the high-pressure state.

As a further improvement of the invention, the ring gear inner groove is provided with three outer teeth.

As a further improvement of the invention, the fine stud rod body is provided with a strip-shaped groove.

As a further improvement of the invention, the limiting valve head is tightly attached to the inner wall of the rotary sleeve column.

The invention has the beneficial effects that:

the problem of the overheated emergence scorching phenomenon of end that causes is great easily to the great mould cavity internal pressure of injection thickness improves, becomes the chamber through the temperature sensing and cooperates with intermittent type pressure release axle, is being close the slow pressure release of nozzle department to high temperature suppression mould pressure release hole according to its internal pressure production avoids overflowing, and rotatory cover post can get rid of the burr that appears during the cooling.

In conclusion, after the temperature-sensing variable-cavity heat-conducting injection device is improved, the air flow is controlled through the flow channel in the temperature-sensing variable-cavity heat-conducting device, the air is discharged by the pressure-releasing shaft in the later injection period, the slurry in the pressure-releasing shaft is restrained, the situation that the internal density cannot meet the production requirement due to excessive pressure release is avoided, and burrs generated at the pressure-releasing port can be automatically scraped after cooling.

Drawings

FIG. 1 is a schematic structural diagram of an injection molding machine with thick film pressure relief shaft protection according to the present invention.

FIG. 2 is a schematic view of the extrusion head according to the present invention.

Fig. 3 is a schematic structural view of the internal pressure orifice plate of the present invention.

Fig. 4 is a schematic structural view of the buckling cog of the present invention.

Fig. 5 is a schematic structural view of an intermittent relief shaft according to the present invention.

FIG. 6 is a schematic structural diagram of the temperature sensing chamber according to the present invention.

Fig. 7 is a schematic perspective view of the temperature sensing chamber according to the present invention.

Fig. 8 is a schematic perspective view of a fine lead post according to the present invention.

FIG. 9 is a schematic view of the connection structure of the air-permeable pressing plate and the fine lead posts.

Fig. 10 is a schematic cross-sectional view of an intermittent relief shaft according to the present invention.

In the figure: a feeding box-1, a heating solenoid-2, an extrusion head-3, a mould-4, a driving arm-5, a discharge hopper-6, a machine body-7, an internal pressure orifice plate-31, a cushion groove-32, a balance rod-33, a sleeve head-34, a pressure variable cog-311, an intermittent pressure relief shaft-312, a temperature variable cavity-313, a pressure cavity-3111, a ring gear-3112, a pressure pipe-3113, a rotary sleeve column-3121, a breathable pressure plate-3122, a starting sheet-3123, a limit valve head-3124, a fine guide column-3125, a trachea-3131, a balance cavity-3132, a connecting pipe-3133, a header pipe-3134 and a temperature variable cavity-3135.

Detailed Description

In order to make the technical means, the creation features, the achievement objects and the effects of the invention easy to understand, fig. 1 to fig. 10 schematically show the structure of the extrusion head of the embodiment of the invention, and the invention is further explained below with reference to the specific embodiment.

Examples

As shown in fig. 1-10, the present invention provides an injection molding machine with thick film pressure relief shaft protection, which structurally comprises: pay-off case 1, heating solenoid 2, crowded stub bar 3, mould 4, actuating arm 5, play hopper 6, organism 7, pay-off case 1 passes through the bolt vertical fixation at the feed inlet of

heating solenoid

2, 2 welded fastening of heating solenoid is on the right side of crowded stub bar 3 and the edge through seamless processing, 4 levels of mould are fixed in the left side of heating solenoid 2 and the two is a straight line, mould 4 is through the screw thread interlock of left internal thread and 5 right sides horizontal poles of actuating arm, and parallels with the play hopper 6 of bottom, go out hopper 6 vertical nestification in the inside of organism 7 recess, crowded stub bar 3 inner structure includes: the inner pressure orifice plate 31 is welded and fixed on the left side of the pad groove 32 and forms an integral structure, the groove on the right side of the pad groove 32 is tightly attached to the balance rod 33, and the left end of the sleeve head 34 is embedded into the inner wall of the pad groove 32.

As a further improvement of the present invention, the internal pressure orifice plate 31 is composed of two variable pressing cogs 311, an intermittent pressure relief shaft 312 and a temperature sensing variable cavity 313, the two variable pressing cogs 311 are parallel to the intermittent pressure relief shaft 312, the intermittent pressure relief shaft 312 is installed at the upper and lower ends of the temperature sensing variable cavity 313, and the temperature sensing variable cavity 313 is tightly attached to the right sleeve head 34.

As a further improvement of the present invention, the pressure-sensitive transformer insert 311 comprises a pressure chamber 3111, a ring gear 3112, and a pressure pipe 3113, wherein the pressure chamber 3111 is closely nested with the ring gear 3112 on the left side, and the pressure pipe 3113 is nested at the upper and lower ends of the pressure chamber 3111 and is parallel to the temperature-sensitive transformer chamber 313 on the left side.

As a further improvement of the present invention, the intermittent pressure relief shaft 312 is composed of a rotating sleeve column 3121, a gas-permeable pressure plate 3122, a starting page 3123, a limit valve head 3124, and a fine guide column 3125, grooves around the rotating sleeve column 3121 and the gas-permeable pressure plate 3122 are nested with each other, and the edge has a fine gap, the axis of the starting page 3123 is tightly attached to the axis of the rotating sleeve column 3121, and the limit valve head 3124 is welded to the bottom column of the fine guide column 3125 and is parallel to the gas-permeable pressure plate 3122.

As a further improvement of the present invention, the temperature-sensing variable cavity 313 comprises an air pipe 3131, a balance cavity 3132, a connecting pipe 3133, a main pipe 3134, and a variable-temperature inner cavity 3135, wherein the air pipe 3131 is installed on both sides of the balance cavity 3132 and is communicated with the central axis of the rotating sleeve pillar 3121, and the connecting pipe 3133 is installed on the bottom of the main pipe 3134 and is welded and fixed with the variable-temperature inner cavity 3135 on the left side.

As a further improvement of the present invention, a corrugated inner tube is disposed inside the temperature-changing inner cavity 3135, and when a certain temperature is reached, the inner cavity is deformed and extruded to increase the pressure.

As a further improvement of the present invention, the ring gear 3112 is engaged with the rotating sleeve column 3121 under high pressure, and after the engagement, the rotating sleeve column 3121 stops rotating, and the air-permeable pressure plate 3122 is aligned with the air gap for pressure relief.

As a further improvement of the present invention, the inner groove of the ring gear 3112 is provided with three outer teeth, and the outer teeth can be well buckled with the air-permeable pressure plate 3122, so that the inner pressure cavity is squeezed, and the inner pressure during the inner injection process is stabilized.

As a further improvement of the invention, the rod body of the fine guiding column 3125 is provided with a strip groove, which is convenient for guiding the airflow of the mold cavity to perform pressure relief.

As a further improvement of the invention, the limit valve head 3124 is tightly attached to the inner wall of the rotating sleeve column 3121, so that pressure can be maintained when gas enters the interior, and insufficient pressure caused by excessive pressure relief is avoided.

The working principle is as follows:

put into pay-off case 1 with plastic granules then make its screw rod slow moving through heating solenoid 2 inside, and the screw rod outer wall heats and makes it melt, and the plastic solution that melts gets into crowded stub bar 3 and then injects to inside the mould 4, then carries out fast demoulding through actuating arm 5, and fashioned plastic mold falls out through a hopper 6 and carries out processing on next step, and the mode that adopts horizontal drawing of patterns can make it directly drop and has removed the trouble of manual demoulding from.

When a mould with a thicker inner wall is injected, the air inside the mould is gradually extruded to be higher due to the larger inner cavity in the injection process, and then the air is gradually extruded in the direction of the inner pressure pore plate 31, and the pressure variable cog 311 is fixed on the side edge of the intermittent pressure relief shaft 312 and controlled by the middle temperature-sensing variable cavity 313.

The temperature sensing variable cavity 313 increases along with the increase of the internal temperature, the internal elastic inner pipes extrude each other to increase the external pressure, the pressure cavity 3111 enables the ring tooth 3112 to act towards the left side to be buckled on the surface wall of the rotary sleeve column 3121, the ring tooth 3112 can be tightly buckled with the air-permeable pressure plate 3122 to stop rotating in the short rotating process, the air-permeable pressure plate 3122 keeps the original position to enable the internal gas to slowly flow out through the gap of the edge, in the demolding and cooling process, the temperature is reduced to enable the temperature-variable cavity 3135 air pressure to recover the ring tooth 3112, the rotary sleeve column 3121 recovers the rotating state and scrapes off the burrs generated at the air-permeable gap of the internal workpiece, and the trouble of secondary polishing is avoided.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an injection molding machine with thick film pressure release axle protection, its structure includes: pay-off case (1), heating solenoid (2), crowded stub bar (3), mould (4), actuating arm (5), play hopper (6), organism (7), its characterized in that:

the feeding box (1) is vertically fixed at a feeding hole of the heating solenoid (2) through a bolt, the heating solenoid (2) is welded and fixed at the right side of the extrusion head (3), the edge of the heating solenoid is processed in a seamless mode, the die (4) is horizontally fixed at the left side of the heating solenoid (2) and is in a straight line, the die (4) is meshed with the thread of the cross rod at the right side of the driving arm (5) through the internal thread at the left side and is parallel to the discharging hopper (6) at the bottom, and the discharging hopper (6) is vertically embedded in the groove of the machine body (7);

the inner structure of the extrusion head (3) comprises: the inner pressure pore plate (31), the pad groove (32), the balance rod (33) and the sleeve head (34) are welded and fixed on the left side of the pad groove (32) to form an integral structure, a groove on the right side of the pad groove (32) is tightly attached to the balance rod (33), and the left end head of the sleeve head (34) is embedded into the inner wall of the pad groove (32);

interior pressure orifice plate (31) become chamber (313) by pressing variable cog (311), intermittent type pressure release axle (312), temperature sensing and constitute, press variable cog (311) to be equipped with two and be parallel to each other with intermittent type pressure release axle (312), intermittent type pressure release axle (312) are installed and are become the upper and lower both ends in chamber (313) at the temperature sensing, the temperature sensing becomes chamber (313) and sleeve head (34) on right side and closely laminate.

2. The injection molding machine with thick film pressure relief shaft protection of claim 1, wherein: the pressure-variable cog (311) is composed of a pressure cavity (3111), a ring gear (3112) and a pressure pipe (3113), the pressure cavity (3111) is tightly nested with the ring gear (3112) on the left side, and the pressure pipe (3113) is nested at the upper end and the lower end of the pressure cavity (3111) and is parallel to the temperature-sensitive variable cavity (313) on the left side.

3. The injection molding machine with thick film pressure relief shaft protection of claim 1, wherein: the intermittent pressure relief shaft (312) is composed of a rotary sleeve column (3121), a breathable pressure plate (3122), a starting page (3123), a limiting valve head (3124) and a fine guide column (3125), grooves on the periphery of the rotary sleeve column (3121) and the breathable pressure plate (3122) are mutually nested, small gaps exist on the edges of the grooves, the axis of the starting page (3123) is tightly attached to the axis of the rotary sleeve column (3121), and the limiting valve head (3124) is welded on a bottom column of the fine guide column (3125) and is parallel to the breathable pressure plate (3122).

4. The injection molding machine with thick film pressure relief shaft protection of claim 1, wherein: the temperature sensing variable cavity (313) is composed of an air pipe (3131), a balance cavity (3132), a connecting pipe (3133), a main pipe (3134) and a variable temperature inner cavity (3135), wherein the air pipe (3131) is arranged on two sides of the balance cavity (3132) and communicated with a central shaft of the rotary sleeve column (3121), and the connecting pipe (3133) is arranged at the bottom of the main pipe (3134) and welded and fixed with the variable temperature inner cavity (3135) on the left side.

5. The injection molding machine with thick film pressure relief shaft protection of claim 4, wherein: the inner part of the temperature-changing inner cavity (3135) is provided with a corrugated inner pipe.