CN216100136U

CN216100136U - Double-flow-passage disassembly-free nozzle

Info

Publication number: CN216100136U
Application number: CN202122084349.6U
Authority: CN
Inventors: 王三强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-03-22
Anticipated expiration: 2031-08-31

Abstract

The utility model belongs to the technical field of injection molding equipment, and relates to a double-flow-passage disassembly-free nozzle which comprises a hollow pipe body with an axial through flow passage, wherein a nozzle cap is screwed at the discharge end of the pipe body, a filter screen is installed in the discharge end of the pipe body, the filter screen divides the flow passage of the pipe body into a filter inner cavity and a filter outer cavity, a filter screen plane is arranged at the bottom of the filter screen, the inner side surface of the filter screen plane is in abutting connection with the end surface of the discharge end of the pipe body, a side hole flow passage communicated with the filter inner cavity and a central flow passage communicated with the filter outer cavity are arranged on the nozzle cap and the filter screen plane, and the communication state of the side hole flow passage is switched when the nozzle cap rotates relative to the filter screen plane. The double-flow-passage disassembly-free nozzle provided by the utility model does not need to disassemble the nozzle or open fire when cleaning sundries, and the cleaning process is more convenient and faster.

Description

Double-flow-passage disassembly-free nozzle

Technical Field

The utility model belongs to the technical field of injection molding equipment, and relates to a double-flow-passage disassembly-free injection nozzle.

Background

Injection molding is a common method for producing and molding industrial products, and the products generally use rubber injection molding and plastic injection molding, wherein the injection molding is realized by an injection molding machine and a mold, and the injection molding machine uses thermoplastic plastics or thermosetting materials to make plastic products with various shapes by using a plastic molding mold, and the injection molding machine is divided into a vertical type, a horizontal type, a full-electric type and the like. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it through the nozzle structure to fill the mold cavity. When sundries appear in the nozzle structure, the nozzle structure needs to be disassembled after the heating ring on the nozzle structure is disassembled, then the nozzle structure is burnt by a fire gun, the sundries such as iron blocks are taken out after the internal plastic is melted, and finally the nozzle structure returns to the machine table, the heating ring is sleeved, so that the whole treatment process is very troublesome. Moreover, as enterprise management becomes more and more stringent, injection molding plants have been regulated in plain text: open fire should not be used, and even a big trouble occurs after the mouth is blocked by injection molding.

In order to more conveniently clean foreign matters in the nozzle, the Chinese utility model patent CN 212400153U discloses an injection nozzle structure, which comprises a pipe body, wherein a flow passage along the axial direction of the pipe body is arranged in the pipe body, and the flow passage penetrates through the end surfaces of the two ends of the pipe body; the end face of the discharge end of the pipe body is a cambered surface, the discharge end of the pipe body is sleeved with a cap body, the cap body is provided with a perforation communicated with the flow channel, and the cap body is screwed with a fastening screw capable of abutting against the peripheral surface of the pipe body. The injection nozzle structure provided in the above patent still requires the cap to be removed when cleaning up the impurities.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the double-flow-passage disassembly-free nozzle, so that the nozzle is not required to be disassembled and open fire is not required when sundries are cleaned, and the cleaning process is more convenient and quicker.

In order to solve the above technical problems, the object of the present invention is achieved by the following technical solutions:

the utility model provides a double-flow-passage disassembly-free nozzle, includes the cavity body that has the axial through flow way, the discharge end spiro union of body has the nozzle cap, install the filter screen in the discharge end of body, the filter screen is cut apart into the body runner and is filtered the exocoel, the bottom of filter screen is provided with the filter screen plane, the planar medial surface of filter screen is contradicted with body discharge end terminal surface and is connected, be provided with on nozzle cap and the filter screen plane with the side opening runner that filters the intracavity intercommunication, with the central runner that filters the exocoel intercommunication, switch the connected state of side opening runner when the relative filter screen plane of nozzle cap rotates, the central runner is the injection runner in aperture, the side opening runner is the miscellaneous runner of row of large aperture.

In the double-flow-channel disassembly-free nozzle, the filter screen plane is provided with a first connecting hole communicated with the filter inner cavity and a second connecting hole communicated with the filter outer cavity, the nozzle cap is provided with a central through hole and a side through hole, the first connecting hole is communicated with the central through hole to form a central flow channel, and the second connecting hole is communicated with the side through hole to form a side hole flow channel.

In the aforementioned dual-channel non-dismantling nozzle, the first connection hole includes a fan-shaped groove and a plurality of connection through holes connected to the filter outer cavity, and a vertex of the fan-shaped groove passes through a center of a circle of the filter screen plane.

In the above-mentioned double-flow-passage disassembly-free nozzle, when the side hole flow passage is in a communicated state, the second connecting hole and the side through hole are located at the same axial position.

In the double-flow-passage disassembly-free nozzle, the central through hole is arranged at the axis of the nozzle cap, the side through holes are eccentrically arranged, and the aperture of the central through hole is smaller than that of the side through holes. The aperture of the central flow channel is 2.5-4.0mm, and the aperture of the side hole flow channel is about 8.0 mm.

In the double-flow-passage disassembly-free nozzle, the filter screen is provided with a plurality of axially distributed filter screen frameworks, a plurality of filter through holes are formed in the grooves between the adjacent filter screen frameworks, the outer wall of each filter screen framework is in contact connection with the inner wall of the discharge end, and a filter outer cavity is formed between the filter screen frameworks. The aperture of the filtering through hole is about 1.0 mm.

In foretell double fluid way exempts from to tear open nozzle, be provided with annular boss between the feed end of body and the discharge end, annular boss is close to one side of nozzle cap and is provided with the rotatory limit structure of mutually supporting on the nozzle cap, the side opening runner is closed when the nozzle cap is located initial position, the side opening runner intercommunication when the nozzle cap is located the restriction position. Preferably, the annular boss is a hexagonal boss. The rotary limiting structure can select a limiting block and a limiting bolt, and when the rotary limiting structure is rotated to the position where the limiting block is abutted against the limiting bolt, the rotary limiting structure cannot rotate further.

In the above-mentioned double-flow-passage disassembly-free nozzle, the rotation direction of the nozzle cap from the initial position to the limiting position is opposite to the screwing rotation direction of the nozzle cap, and the included angle between the initial position and the limiting position is 90 °.

In the above-mentioned double-flow-passage disassembly-free nozzle, the nozzle cap is provided with a plurality of axial multi-edge structures.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model improves the structure of the injection nozzle, creatively develops the injection nozzle with double flow passages, one flow passage is used for plastic injection, the other flow passage is used for removing impurities, the injection mode and the impurity removal mode can be switched by only rotating the nozzle cap when in use, and the nozzle cap does not need to be disassembled. The sundries can be discharged through the large-aperture sundry discharging flow passage without using open fire when the sundries are discharged.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a perspective view of the filter screen of the present invention;

reference numerals: 1. a pipe body; 11. a discharge end; 12. a feeding end; 13. an annular boss; 2. a nozzle cap; 21. a central through hole; 22. a side through hole; 3. a filter screen; 31. a screen plane; 32. a first connection hole; 32a, a fan-shaped groove; 32b, connecting through holes; 33. a second connection hole; 34. a filter screen framework; 35. and filtering the through holes.

Detailed Description

The utility model is further described in the following with specific embodiments in conjunction with the accompanying drawings, see fig. 1-4:

a double-channel disassembly-free nozzle comprises a hollow tube body 1 with an axial through channel, a nozzle cap 2 is screwed at a discharge end 11 of the tube body 1, a filter screen 3 is installed in the discharge end 11 of the tube body 1, the filter screen 3 divides the tube body 1 into a filter inner cavity and a filter outer cavity, the filter inner cavity is directly communicated with a feed end 12 of the tube body 1, materials entering the filter inner cavity are filtered by the filter screen 3 and then enter the filter outer cavity, a filter screen plane 31 is arranged at the bottom of the filter screen 3, the inner side surface of the filter screen plane 31 is in abutting connection with the end surface of the discharge end 11 of the tube body 1, a side hole channel communicated with the filter inner cavity and a central channel communicated with the filter outer cavity are arranged on the nozzle cap 2 and the filter screen plane 31, the communication state of the side hole channel is switched when the nozzle cap 2 rotates relative to the filter screen plane 31, and the central channel is an injection channel with a small aperture, the side hole flow passage is a large-aperture impurity removal flow passage.

Referring to fig. 3, the specific structure of the center flow channel and the side hole flow channels is as follows: the nozzle cap 2 is provided with a central through hole 21 and a side through hole 22, the first connecting hole 32 is communicated with the central through hole 21 to form a central flow passage, and the second connecting hole 33 is communicated with the side through hole 22 to form a side hole flow passage.

Further, referring to fig. 2 and 3, the first connection hole 32 includes a fan-shaped groove 32a and a plurality of connection through holes 32b connected to the outer filtering cavity, and the vertex of the fan-shaped groove 32a passes through the center of the plane of the filter mesh 3.

Further, when the side hole flow passage is in a communicating state, the second connecting hole 33 and the side through hole 22 are located at a coaxial position.

Further, the central through hole 21 is arranged at the axis of the nozzle cap 2, the side through holes 22 are eccentrically arranged, and the aperture of the central through hole 21 is smaller than that of the side through holes 22. The aperture of the central flow channel is 2.5-4.0mm, and the aperture of the side hole flow channel is about 8.0 mm.

The working process of the utility model is as follows: during installation, the filter screen 3 is firstly installed from the discharge end 11 of the pipe body 1, then the nozzle cap 2 is installed, the filter screen plane 31 is pressed after the nozzle cap 2 is installed, colloid leakage is prevented, the end face of the nozzle cap 2 is in abutting connection with the filter screen plane 31, during injection, materials sequentially pass through the flow channel, the filter inner cavity and the filter outer cavity of the pipe body 1 and are then ejected out, the first connecting hole 32 and the central through hole 21, and at the moment, the second connecting hole 33 and the side through hole 22 are located at different positions, so that the side hole flow channel is in a closed state; when the nozzle is blocked and impurities need to be discharged, the nozzle cap 2 is rotated reversely, the second connecting hole 33 and the side through hole 22 are in the coaxial position, the side hole flow channel is in a communicated state at the moment, impurities in the filter screen 3 are directly discharged through the second connecting hole 33 and the side through hole 22 without being filtered by the filter screen 3, and the nozzle cap 2 is rotated again to be switched to an injection mode after the discharge is finished.

In order to more conveniently rotate the nozzle cap 2, a multi-edge structure is arranged on the nozzle cap 2.

Referring to the attached drawing 4, a plurality of axially distributed filter screen frameworks 34 are arranged on the filter screen 3, a plurality of filtering through holes 35 are arranged in grooves between the adjacent filter screen frameworks 34, the outer wall of each filter screen framework 34 is in contact connection with the inner wall of the discharge end 11, a filtering outer cavity is formed between the filter screen frameworks 34, and the aperture of each filtering through hole 35 is about 1.0 mm.

For more stable switching injection mode and the mode of excluding impurity, be provided with annular boss 13 between the feed end 12 of body 1 and the discharge end 11, annular boss 13 is provided with the rotatory limit structure of mutually supporting on being close to one side of nozzle cap 2 and the nozzle cap 2, side opening runner is closed when nozzle cap 2 is located initial position, side opening runner intercommunication when nozzle cap 2 is located the restriction position. Preferably, the annular boss 13 is a hexagonal boss. The rotary limiting structure can select a limiting block and a limiting bolt, and when the rotary limiting structure is rotated to the position where the limiting block is abutted against the limiting bolt, the rotary limiting structure cannot rotate further.

Further, the rotation direction of the nozzle cap 2 from the initial position to the limiting position is opposite to the screwing rotation direction of the nozzle cap 2, and the included angle between the initial position and the limiting position is 90 degrees.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a two fluid passageways exempt from to tear open nozzle, is including having cavity body (1) that the axial runs through the runner, the discharge end (11) spiro union of body (1) has nozzle cap (2), a serial communication port, install filter screen (3) in discharge end (11) of body (1), filter screen (3) are cut apart into with the body runner and are filtered the exocoel, the bottom of filter screen (3) is provided with filter screen plane (31), the medial surface and body (1) discharge end (11) terminal surface conflict of filter screen plane (31) are connected, be provided with on nozzle cap (2) and filter screen plane (31) with the side opening runner of filtering the intracavity intercommunication, with the center runner of filtering the exocoel intercommunication, the intercommunication state of switching side opening runner when nozzle cap (2) rotate relative filter screen plane (31).

2. A dual-flow-channel disassembly-free nozzle according to claim 1, wherein the filter screen plane (31) is provided with a first connecting hole (32) communicated with the inner filter cavity and a second connecting hole (33) communicated with the outer filter cavity, the nozzle cap (2) is provided with a central through hole (21) and a side through hole (22), the first connecting hole (32) is communicated with the central through hole (21) to form a central flow channel, and the second connecting hole (33) is communicated with the side through hole (22) to form a side flow channel.

3. A dual-flow-passage disassembly-free nozzle according to claim 2, wherein the first connecting holes (32) comprise fan-shaped grooves (32a) and a plurality of connecting through holes (32b) connecting the filtering outer cavity, and the apex of the fan-shaped grooves (32a) passes through the center of the screen plane (31).

4. A nozzle as claimed in claim 2, wherein the second connecting hole (33) is coaxial with the side through hole (22) when the side hole flow passage is in communication.

5. The nozzle of claim 1, wherein the filter screen (3) is provided with a plurality of axially distributed filter screen frameworks (34), a plurality of filter through holes (35) are arranged in the grooves between the adjacent filter screen frameworks (34), and the outer wall of each filter screen framework (34) is in contact connection with the inner wall of the discharge end (11).

6. A dual-flow-passage disassembly-free nozzle according to claim 2, wherein the central through hole (21) is arranged at the axis of the nozzle cap (2), the side through holes (22) are eccentrically arranged, and the diameter of the central through hole (21) is smaller than that of the side through holes (22).

7. The non-dismantling nozzle with double flow channels as claimed in claim 1, wherein an annular boss (13) is disposed between the feeding end (12) and the discharging end (11) of the tube body (1), a side of the annular boss (13) close to the nozzle cap (2) and the nozzle cap (2) are provided with mutually-matched rotation limiting structures, the side hole flow channel is closed when the nozzle cap (2) is located at the initial position, and the side hole flow channel is communicated when the nozzle cap (2) is located at the limiting position.

8. A dual-flow-channel disassembly-free nozzle as claimed in claim 7, wherein the rotation direction of the nozzle cap (2) from the initial position to the limiting position is opposite to the screwing rotation direction of the nozzle cap (2), and the angle between the initial position and the limiting position is 90 °.

9. A dual-flow-passage disassembly-free nozzle according to claim 1, wherein the nozzle cap (2) is provided with a multi-ribbed structure.