Pneumatic nozzle structure

Abstract

The utility model relates to the field of pneumatic tools, and discloses a pneumatic nozzle structure which comprises a connector, a connecting nut is mounted on the outer side of the connector, a plurality of outer hexagon bolts are arranged on the outer side of the connecting nut, a cylinder body is in threaded connection with the outer sides of the outer hexagon bolts, a nozzle body is mounted on the outer side of the cylinder body, and the nozzle body is in threaded connection with the cylinder body. A nozzle body sleeve is arranged on the outer side of the nozzle body, a piston is arranged in the cylinder body, and a second inner hexagon bolt is arranged in the piston. According to the utility model, when the piston is pushed forwards through compressed air, the glue sealing needle opens the raw material channel forwards, so that high-pressure raw materials are injected into a mold cavity through the nozzle body; after glue injection is completed, air pressure changes, the piston moves backwards, the glue sealing needle retreats, the needle tip is tightly attached to the sealing face of the nozzle body, the raw material channel is closed through precise matching of the piston and the glue sealing needle, and raw material leakage or backflow is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic tools, and in particular to a pneumatic nozzle structure. Background Technology

[0002] A pneumatic nozzle is a device that uses compressed air to generate jet propulsion. It typically consists of a nozzle, air inlet, valve, and other components. By precisely controlling the air intake and jet angle, it can propel gas or other fluids at high speeds and is widely used in industrial production, painting, cleaning, and other fields.

[0003] In existing technologies, after the pneumatic nozzle structure completes the injection task, due to changes in air pressure, when the piston moves backward, the sealing needle cannot fit tightly and promptly with the nozzle body sealing surface, making it difficult to completely close the material channel. This results in material leakage or backflow, which not only wastes material but also pollutes the working environment, affecting product quality and production efficiency.

[0004] To address the above problems, a pneumatic nozzle structure is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a pneumatic nozzle structure, which aims to improve the problem that in the existing pneumatic nozzle structure, after completing the injection task, the sealing needle cannot timely and tightly fit with the nozzle body sealing surface when the piston moves backward due to changes in air pressure. This makes it difficult to completely close the raw material channel, resulting in raw material leakage or backflow. This not only wastes raw materials but also pollutes the working environment and affects product quality and production efficiency.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a pneumatic nozzle structure, including a connector, a connecting nut installed on the outside of the connector, a plurality of external hexagonal bolts provided on the outside of the connecting nut, a cylinder body threadedly connected to the outside of the external hexagonal bolts, a nozzle body installed on the outside of the cylinder body, a nozzle body sleeve provided on the outside of the nozzle body, a piston provided inside the cylinder body, an internal hexagonal bolt provided inside the piston, a cylinder body cover provided inside the outside of the cylinder body, a sealing needle installed inside the outside of the cylinder body cover, an oil seal body provided outside the sealing needle, two oil seals installed outside the sealing needle, and a plug provided in the cylinder body.

[0007] As a further description of the above technical solution:

[0008] An O-ring is installed between the nozzle body sleeve and the nozzle body.

[0009] As a further description of the above technical solution:

[0010] An O-ring is provided inside the nozzle body sleeve.

[0011] As a further description of the above technical solution:

[0012] Multiple O-rings are provided between the cylinder body and the nozzle body.

[0013] As a further description of the above technical solution:

[0014] The cylinder cover is fitted with four O-rings.

[0015] As a further description of the above technical solution:

[0016] The piston is provided with an O-ring five on its outer side.

[0017] As a further description of the above technical solution:

[0018] The sealing needle is equipped with two internal hexagonal bolts.

[0019] As a further description of the above technical solution:

[0020] An internal hex bolt is installed on the outside of the nozzle body sleeve.

[0021] This utility model has the following beneficial effects:

[0022] In this invention, compressed air enters the cylinder and drives the internal piston. The piston is connected to the sealing needle via an internal hexagonal bolt, causing the sealing needle to reciprocate. When the compressed air pushes the piston forward, the sealing needle moves forward as well, opening the material channel and allowing the high-pressure material to be injected into the mold cavity through the nozzle. After the injection is completed, the air pressure changes, the piston moves backward, and the sealing needle retracts, its tip tightly fitting the sealing surface of the nozzle. This precise cooperation closes the material channel, effectively preventing material leakage or backflow. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of a pneumatic nozzle structure proposed in this utility model.

[0024] Legend:

[0025] 1. Connector; 2. Cylinder body; 3. Nozzle body; 4. Nozzle body sleeve; 5. Sealing needle; 6. Oil seal body; 7. Cylinder cover; 8. Piston; 9. Connecting nut; 10. Socket head bolt 1; 11. External hex bolt; 12. Socket head bolt 2; 13. Plug; 14. O-ring 1; 15. O-ring 2; 16. O-ring 3; 17. O-ring 4; 18. Oil seal; 19. O-ring 5. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 An embodiment of this utility model provides a pneumatic nozzle structure, including a connector 1, a connecting nut 9 installed on the outside of the connector 1, a plurality of external hexagonal bolts 11 provided on the outside of the connecting nut 9, a cylinder body 2 threadedly connected to the outside of the external hexagonal bolts 11, a nozzle body 3 installed on the outside of the cylinder body 2, a nozzle body sleeve 4 provided on the outside of the nozzle body 3, a piston 8 provided inside the cylinder body 2, an internal hexagonal bolt 12 provided inside the piston 8, a cylinder body cover 7 provided inside the outside of the cylinder body 2, a sealing needle 5 installed inside the outside of the cylinder body cover 7, an oil seal body 6 provided outside the sealing needle 5, two oil seals 18 installed outside the sealing needle 5, and a plug 13 provided in the cylinder body 2.

[0028] Specifically, connector 1 is used to connect external equipment, providing the mounting base for the entire pneumatic nozzle structure; connecting nut 9 is installed on the outside of connector 1, cooperating with multiple external hexagonal bolts 11 to firmly thread the cylinder body 2 onto connector 1, ensuring structural stability; cylinder body 2, as the core component, internally houses piston 8, providing space for piston 8's movement, while nozzle body 3 is installed on its outer side; nozzle body 3 is used to guide the material injection, and its outer nozzle body sleeve 4 serves as protection and auxiliary sealing; piston 8, inside cylinder body 2, is driven by compressed air to reciprocate, thereby... The piston 8 drives the sealing needle 5 to move; the internal hex bolt 12 is installed inside the piston 8 to connect the piston 8 and the sealing needle 5 and transmit the motion power; the cylinder cover 7 is installed on the outside of the cylinder 2 and inside to seal and protect the internal structure of the cylinder 2; the sealing needle 5 reciprocates under the drive of the piston 8 to open and close the raw material channel, and complete the pneumatic locking and precise material control; the oil seal body 6 and two oil seals 18 are installed on the outside of the sealing needle 5 to prevent raw materials from entering the pneumatic cavity and protect the internal pneumatic components; the plug 13 is installed on the cylinder 2 to seal or connect structures such as cooling channels.

[0029] Reference Figure 1 O-ring 2 15 is installed between nozzle body sleeve 4 and nozzle body 3. O-ring 1 14 is installed inside nozzle body sleeve 4. Multiple O-ring 3 16 are installed between cylinder body 2 and nozzle body 3. O-ring 4 17 is installed on the outside of cylinder cover 7. O-ring 5 19 is installed on the outside of piston 8. Hex bolt 2 12 is installed inside sealing needle 5. Hex bolt 10 is installed on the outside of nozzle body sleeve 4.

[0030] Specifically, O-ring 2 15 is installed between the nozzle body sleeve 4 and the nozzle body 3 to enhance the sealing at the connection and prevent material leakage; O-ring 1 14 is placed inside the nozzle body sleeve 4 to provide a seal and prevent material from seeping out from the gaps inside the sleeve; multiple O-rings 3 16 are placed between the cylinder body 2 and the nozzle body 3 to further enhance the sealing performance at this location, ensuring that the material is ejected only from the front end of the nozzle body 3; O-ring 4 17 is installed on the outside of the cylinder cover 7 to prevent gas leakage and ensure stable gas pressure to drive the piston 8; O-rings 19 is installed on the outside of piston 8 to ensure the sealing between piston 8 and the inner wall of cylinder 2, so that piston 8 moves smoothly and prevents gas leakage; 12 is installed inside sealing needle 5 and cooperates with 12 inside piston 8 to connect piston 8 and sealing needle 5, transmit motion power, so that piston 8 can drive sealing needle 5 to reciprocate; 10 is installed on the outside of nozzle body sleeve 4 to fix nozzle body sleeve 4 in a suitable position and ensure its relative position with nozzle body 3 and other components is stable.

[0031] Working principle: When the pneumatic nozzle structure is running, compressed air enters the cylinder 2, pushing the internal piston 8 to move. The piston 8 is connected to the sealing needle 5 through the internal hexagonal bolt 12, thereby driving the sealing needle 5 to reciprocate. When the compressed air pushes the piston 8 forward, the sealing needle 5 moves forward accordingly, opening the material channel, allowing the material under high pressure to be injected into the mold cavity through the nozzle body 3. After the injection task is completed, the air pressure changes, the piston 8 moves backward, and the sealing needle 5 also retracts. Its needle tip is tightly fitted with the sealing surface of the nozzle body 3. The precise cooperation between the two achieves the closure of the material channel, effectively preventing material dripping or backflow.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic nozzle structure, comprising a connector (1), characterized in that: A connecting nut (9) is installed on the outside of the connector (1). Multiple external hexagonal bolts (11) are provided on the outside of the connecting nut (9). A cylinder body (2) is threaded on the outside of the external hexagonal bolts (11). A nozzle body (3) is installed on the outside of the cylinder body (2). A nozzle body sleeve (4) is provided on the outside of the nozzle body (3). A piston (8) is provided inside the cylinder body (2). An internal hexagonal bolt (12) is provided inside the piston (8). A cylinder cover (7) is provided on the inside of the outside of the cylinder body (2). A sealing needle (5) is installed on the inside of the outside of the cylinder cover (7). An oil seal body (6) is provided on the outside of the sealing needle (5). Two oil seals (18) are installed on the outside of the sealing needle (5). A plug (13) is provided on the cylinder body (2).

2. The pneumatic nozzle structure according to claim 1, characterized in that: An O-ring 2 (15) is installed between the nozzle body sleeve (4) and the nozzle body (3).

3. The pneumatic nozzle structure according to claim 1, characterized in that: The nozzle body sleeve (4) is provided with an O-ring (14) inside.

4. The pneumatic nozzle structure according to claim 1, characterized in that: Multiple O-rings (16) are provided between the cylinder body (2) and the nozzle body (3).

5. The pneumatic nozzle structure according to claim 1, characterized in that: The cylinder cover (7) is fitted with an O-ring four (17) on the outside.

6. The pneumatic nozzle structure according to claim 1, characterized in that: The piston (8) is provided with an O-ring (19) on its outer side.

7. The pneumatic nozzle structure according to claim 1, characterized in that: The sealing needle (5) is equipped with two internal hexagonal bolts (12).

8. The pneumatic nozzle structure according to claim 1, characterized in that: An internal hex bolt (10) is installed on the outside of the nozzle body sleeve (4).

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