CN213675145U - Leakage-proof device of injection molding machine - Google Patents

Abstract

The utility model relates to an injection molding machine technical field just discloses an injection molding machine leak protection device, include the purt mouth and penetrate the mouth, penetrate mouth and melt pot fixed connection, purt mouth and mould fixed connection, it is equipped with the rubber injection pipe in the mouth to penetrate, penetrate and seted up the small opening on the rubber pipe wall. This kind of injection molding machine leak protection device, through setting up the rubber injection pipe, the small opening, a spring, the stopcock, sprue pipe and latex hole, when the sprue bushing is not aligned with the nozzle, the stopcock can prevent the injecting glue small opening condition from appearing, when using, the sprue pipe of sprue bushing inserts the mouth of glue outlet, promote the stopcock to the inboard of rubber injection pipe, the sprue pipe advances the incident rubber pipe, stopcock extrusion spring causes deformation, molten plastics advances the incident rubber pipe from the small opening under the oppression of pressure, get into the sprue pipe from going into the gluey hole, the leak protection circle of nozzle front end is anastomotic with the sealed recess that fills up of sprue bushing, form multiple sealed effect, the leaking glue condition that causes because of wearing and tearing when having reduced the use.

Description

Leakage-proof device of injection molding machine

Technical Field

The utility model relates to an injection molding machine technical field specifically is an injection molding machine leak protection device.

Background

The 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, and is divided into a vertical type, a horizontal type and a full-electric type.

At present the injection molding machine mainly through the heating cylinder with the plastics melting, then inject the sprue through the plastics of penetrating in the mouth with the melt pot, flow into the mould, penetrate the mouth front end at present and generally be the protrusion, the front end of sprue is the low-concave, it is sealed through the cooperation at both R angles, because the wearing and tearing of the contact surface of penetrating mouth or sprue in daily production, will lead to sealed not well, cause the hourglass to glue, be difficult to clear up, in addition because high pressure and high temperature in the melt pot, present injection molding machine injecting glue position is open state, the hourglass glues leads to the staff to appear scalding often.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides an injection molding machine leak protection device possesses and reduces to leak and glues, and leak protection glue advantage such as scald has solved the problem that the background art provided.

(II) technical scheme

For realizing above-mentioned reduction leak gum, the purpose that the leak gum was scalded, the utility model provides a following technical scheme: the utility model provides an injection molding machine leak protection device, includes sprue bushing and spouts the mouth, spouts mouth and melt pot fixed connection, sprue bushing and mould fixed connection, be equipped with the rubber tube in the mouth of spouting, it has seted up the small opening on the rubber tube wall to spout, the rubber tube internally mounted has the spring, the stopcock has been placed to the front end of spring, the stopcock is two columniform after narrow preceding, the rear end radius of stopcock is less than the radius of rubber tube of spouting, the front end of spouting the mouth has seted up out the jiao kou, stopcock front end radius is less than the internal diameter of jiao kou, the front end length of stopcock is unanimous with the length of jiao kou, the sprue pipe front end is the runner pipe, the external diameter of runner pipe is less than the internal diameter of jiao kou, the length of runner pipe is greater than the length of jiao kou, the length of runner pipe is less than the length sum of jiao kou and rubber tube, the glue inlet has been seted up into the jiao kou at the.

Preferably, round holes are formed in two sides of the squirt nozzle, threads are arranged in the round holes, and a protective cover is fixedly mounted on the outer surface of the squirt nozzle.

Preferably, the number of the leakage holes is six, the leakage holes are distributed at the front end of the rubber injection pipe, and the number of the rubber inlet holes is four, and the leakage holes are distributed at the front end of the sprue pipe.

Preferably, the plug is affected by a spring in the non-operating state, the plug being fully inserted into the glue outlet.

Preferably, the front end surface of the sprue bushing is provided with three leakage-proof rings, the number of turns of the leakage-proof rings is three, the sealing gasket is fixedly mounted on the upper surface of the sprue bushing, the surface of the sealing gasket is provided with a groove, and the number of turns of the groove is three.

Preferably, the protection casing is higher than the squirt mouth surface, the protection casing passes through bolt fixed mounting in the surface of squirt mouth, the quantity of bolt is four.

(III) advantageous effects

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this kind of injection molding machine leak protection device, through setting up the rubber injection pipe, the small opening, a spring, the stopcock, sprue pipe and latex hole, when the sprue bushing is not aligned with the nozzle, the stopcock can prevent the injecting glue small opening condition from appearing, when using, the sprue pipe of sprue bushing inserts the mouth of glue outlet, promote the stopcock to the inboard of rubber injection pipe, the sprue pipe advances the incident rubber pipe, stopcock extrusion spring causes deformation, molten plastics advances the incident rubber pipe from the small opening under the oppression of pressure, get into the sprue pipe from going into the gluey hole, the leak protection circle of nozzle front end is anastomotic with the sealed recess that fills up of sprue bushing, form multiple sealed effect, the leaking glue condition that causes because of wearing and tearing when having reduced the use.

2. This kind of injection molding machine leak protection device through setting up the protection casing on the purt mouth, when the condition takes place for leaking glue, can effectually prevent the burn that splashes and cause of high pressure high temperature's melting plastics.

Drawings

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

FIG. 2 is an overall sectional view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is an exploded view of the nozzle of the present invention;

fig. 5 is an exploded view of the squirt nozzle of the present invention.

In the figure: 1. a gasket; 2. a glue inlet hole; 3. a leakage-proof ring; 4. a pipe plug; 5. a spring; 6. a melting cylinder interface; 7. a fixed zone; 8. injecting a rubber tube; 9. a leak hole; 10. a protective cover; 11. a bolt; 12. a groove; 13. a mold interface; 14. a sprue pipe; 15. a glue outlet; 16. shooting mouth; 17. a squirt nozzle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Referring to fig. 1-4, a leakage-proof device for an injection molding machine comprises a sprue 17 and a nozzle 16, the nozzle 16 is fixedly connected with a melting cylinder, molten plastic can enter the nozzle 16 from a melting cylinder connector 6 and is tightly beaten by a wrench through a fixing area 7, the sprue 17 is fixedly connected with a mold through a mold connector 13, the molten plastic enters the mold from the sprue 17, a plastic injection tube 8 is arranged in the nozzle 16, the plastic injection tube 8 is positioned in the middle of the nozzle 16, a leak hole 9 is arranged on the wall of the plastic injection tube 8, a spring 5 is arranged in the plastic injection tube 8, the spring 5 is positioned at the rear end of the plastic injection tube 8, a pipe plug 4 is arranged at the front end of the spring 5, the pipe plug 4 is in a shape of a cylinder with a narrow front part and a wide back part, the radius of the rear end of the pipe plug 4 is smaller than the inner diameter of the plastic injection tube 8, a plastic outlet 15 is arranged at the front end of the nozzle 16, the radius of the plastic outlet 15, the outer diameter of the sprue pipe 14 is smaller than the inner diameter of the glue outlet 15, the length of the sprue pipe 14 is larger than that of the glue outlet 15, the front end of the sprue pipe 14 is provided with glue inlet holes 2 distributed at the front end of the sprue pipe 14, the number of the glue inlet holes 2 is four, the glue inlet holes 2 are exposed in the glue injection pipe 8 when the sprue 17 is matched with the nozzle 16, the number of the drain holes 9 is six and distributed at the front end of the glue injection pipe 8, the pipe plug 4 is influenced by the spring 5 in a non-working state, the pipe plug 4 is completely inserted into the glue outlet 15, the front end surface of the nozzle 16 is provided with a leakage-proof ring 3, the leakage-proof ring 3 protrudes out of the front end surface of the nozzle 16, the number of turns of the leakage-proof ring 3 is three and is concentric with the glue outlet 15, the upper surface of the sprue 17 is fixedly provided with a sealing gasket 1, the sealing gasket 1 is made of square flexible graphite and can resist high temperature and high pressure, the surface of the sealing gasket, the depth of the groove 12 and the number of turns of the groove 12 are three, the three turns correspond to the leakage-proof ring 3 respectively, and the depth of the groove 12 is consistent with the protruding height of the leakage-proof ring 3.

Example two

Based on the first embodiment, as shown in fig. 5, two sides of the squirt nozzle 17 are provided with round holes, two sides of the squirt nozzle are symmetrical to each other, threads are arranged in the round holes, the protective cover 10 is fixedly arranged on the outer surface of the squirt nozzle 17, the protective cover 10 is square, the front end of the protective cover 10 is higher than the surface of the squirt nozzle 17, the protective cover 10 is fixedly arranged on the surface of the squirt nozzle 17 through bolts 11, and the number of the bolts 11 is four.

The working principle is as follows: when the injection molding machine is used, plastic particles can be changed into a flowable molten state under the action of high-temperature pressurization of the melting cylinder, when the injection molding machine is used for injection molding, the melting cylinder injects the plastic in the molten state from the melting cylinder connector 6 to fill the whole injection nozzle 16, when the injection molding machine is matched with the melting cylinder, the sprue pipe 14 presses the pipe plug 4 in the injection pipe 8 towards the rear end, the pipe plug 4 presses the spring 5 to deform, the molten plastic flows into the injection pipe 8 from the leakage hole 9, flows into the glue inlet hole 2 from the glue inlet pipe 8, flows into the mold connector 13 of the pump nozzle 17 from the glue inlet hole 2, and flows into a mold, in the process, the leakage-proof ring 3 is tightly matched with the sealing gasket 1 for leakage prevention, after the injection molding is completed, the sprue pipe 14 is extracted, the deformed spring 5 is recovered, the pipe plug 4 is pushed forwards to the initial position, and when accidental glue leakage occurs, the high-temperature high-pressure molten plastic which can be blocked by.

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 (6)

1. An injection molding machine leak-proof device comprises a squirt nozzle (17) and a nozzle (16), wherein the nozzle (16) is fixedly connected with a melting cylinder, and the squirt nozzle (17) is fixedly connected with a mold;

the method is characterized in that:

the rubber injection tube is characterized in that a rubber injection tube (8) is arranged in the injection nozzle (16), a leak hole (9) is formed in the wall of the rubber injection tube (8), a spring (5) is arranged inside the rubber injection tube (8), a tube plug (4) is placed at the front end of the spring (5), the tube plug (4) is in two cylindrical shapes with a narrow front part and a wide rear part, the radius of the rear end of the tube plug is smaller than the radius of the rubber injection tube (8), a rubber outlet (15) is formed in the front end of the injection nozzle (16), the radius of the front end of the tube plug (4) is smaller than the inner diameter of the rubber outlet (15), the length of the front end of the tube plug (4) is consistent with the length of the rubber outlet (15), a sprue pipe (14) is arranged at the front end of the sprue (17), the outer diameter of the sprue pipe (14) is smaller than the inner diameter of the rubber outlet (15), the length of the sprue pipe (14) is larger than the length of the rubber outlet (15), and the length of the sprue pipe (14) is smaller than the sum of, the front end of the sprue pipe (14) is provided with a glue inlet hole (2).

2. The leakage preventing device of an injection molding machine according to claim 1, wherein: round holes are formed in two sides of the squirt nozzle (17), threads are arranged in the round holes, a protective cover (10) is fixedly installed on the outer surface of the squirt nozzle (17), and the protective cover (10) is fixedly installed on the surface of the squirt nozzle (17) through a bolt (11).

3. The leakage preventing device of an injection molding machine according to claim 1, wherein: the quantity of small opening (9) is six, small opening (9) distribute in the front end of penetrating rubber pipe (8), the quantity of going into gluey hole (2) is four, small opening (9) distribute in the front end of runner pipe (14).

4. The leakage preventing device of an injection molding machine according to claim 1, wherein: the pipe plug (4) is affected by the spring (5) in a non-working state, and the pipe plug (4) is completely inserted into the glue outlet (15).

5. The leakage preventing device of an injection molding machine according to claim 1, wherein: penetrate the front end surface of mouth (16) and have leak protection circle (3), the number of turns of leak protection circle (3) is three, fixed mounting has sealed pad (1) on pump mouth (17), the surface of sealed pad (1) is seted up flutedly (12), the number of turns of recess (12) is three, and the degree of depth and the protruding highly uniform of leak protection circle (3) of recess (12), the radius and the leak protection circle (3) radius of recess (12) are unanimous.

6. The leakage preventing device of an injection molding machine according to claim 2, wherein: the protective cover (10) is higher than the surface of the squirt nozzle (17), and the number of the bolts (11) is four.

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