CN218945460U

CN218945460U - Nozzle with leakage-proof device

Info

Publication number: CN218945460U
Application number: CN202220796250.0U
Authority: CN
Inventors: 朱炫竹
Original assignee: Dongguan Geli Tools Co ltd
Current assignee: Dongguan Geli Tools Co ltd
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2023-05-02
Anticipated expiration: 2032-04-08

Abstract

The utility model discloses a glue leakage preventing nozzle, which comprises: the leakage-proof device component, the sealing ring and the nozzle of the glue inlet and outlet channel form a normally closed sealing fluid channel with directivity. The leak protection device subassembly includes: the piston pull rod is arranged corresponding to the fluid channel in the pressure cabin with the specific structure; the spring penetrates into the piston pull rod and is simultaneously arranged on a limit step of a pressure cavity hole in the pressure cabin with a specific structure; the gasket is sleeved in the piston pull rod, the spring is compressed, the end part of the piston pull rod is further riveted and fixed with the gasket, at the moment, the piston pull rod and the pressure cabin with a specific structure form an elastic normally closed sealed fluid channel, the structure is a leakage-proof device assembly, then the leakage-proof device assembly is embedded into the nozzle channel, and a sealing ring is arranged on a nozzle screw, so that the sealing ring can be installed on a hot melt adhesive gun (machine). The glue leakage preventing nozzle can realize quick leakage prevention and stopping after standby of a glue gun (machine), reduce material waste and save production cost.

Description

Nozzle with leakage-proof device

Technical Field

The utility model relates to the technical field of hot melt adhesive guns and hot melt adhesive machine equipment nozzles, in particular to a nozzle with a leakage-proof device.

Background

The nozzle with leakage-proof device at the glue outlet of the existing hot melt glue gun and hot melt glue machine is an independent nozzle with screw connection or directly integrated sealing pipeline, a spring, a steel ball and a piston ring are added, and the steel ball and the piston ring are tightly attached together by the resilience force of the compression spring to form a sealing leakage-proof device. When the melted glue is extruded by external force in operation, the glue extrudes the steel balls from the piston ring hole to flow out smoothly, and after the extrusion of external force is stopped by one operation, the steel balls are slowly propped back to the piston ring by the elastic force of the spring to form a sealing cambered surface again, so that the sealing and leakage-preventing effects are achieved. Practice proves that the method of the leakage-proof device has the advantages of poor stability, short service life and high yield. The spring subjected to long-term compression is easy to change quality and lose part of elasticity in a high-temperature environment; resistance of glue or heated air pressure; the steel balls are unevenly stressed and offset; the spring is low in rebound speed or loses elasticity due to the fact that the surplus external force is extruded by external force, and therefore glue still dribbling after the working is stopped causes waste of raw materials and influences on working environment.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems existing in the prior fluid and semi-fluid leak-proof sealing technology. The embodiment of the utility model provides a nozzle with a leakage-proof device, which aims to solve the problems that in the prior art, a hot melt adhesive gun and a hot melt adhesive machine are in standby state, material waste is caused by drooling, and the working environment is influenced.

According to an embodiment of the present utility model, a nozzle of a leakage preventing apparatus includes: the leakage-proof device component, the sealing ring and the nozzle of the glue inlet and outlet channel form a normally closed sealing fluid channel with directivity. Comprising the following steps: the leakage-proof device component, the sealing ring and the nozzle of the glue inlet and outlet channel form a normally closed sealing fluid channel with directivity. The leak protection device subassembly includes: the piston pull rod is arranged corresponding to the fluid channel in the pressure cabin with the specific structure; the spring penetrates into the piston pull rod and is simultaneously arranged on a limit step of a pressure cavity hole in the pressure cabin with a specific structure; the gasket is sleeved in the piston pull rod, the spring is compressed, the end part of the piston pull rod is further riveted and fixed with the gasket, at the moment, the piston pull rod and the pressure cabin with a specific structure form an elastic normally closed sealed fluid channel, the structure is a leakage-proof device assembly, then the leakage-proof device assembly is embedded into the nozzle channel, and a sealing ring is arranged on a nozzle screw, so that the sealing ring can be installed on a hot melt adhesive gun and a hot melt adhesive machine.

According to the nozzle of the leakage-proof device, the hemispherical surface on the piston pull rod is tightly attached to the section of the pressure cabin with a specific structure through the tension of the spring, so that an elastic normally-closed environment is formed, the leakage-proof purpose is achieved, and the waste is reduced to the greatest extent.

Drawings

Fig. 1 is a cross-sectional view of a nozzle with a leakage prevention device, a cross-sectional view of a leakage prevention device assembly, and a schematic left-hand structural view of an embodiment of the present utility model.

1. A leak prevention device assembly; 2. a seal ring; 3. a nozzle assembly.

Fig. 2 is an assembly view of a three-dimensional structure assembly of a nozzle with a leakage preventing device and a left-hand structure schematic diagram of the nozzle according to the embodiment of the utility model.

1. A leak prevention device assembly; 2. a seal ring; 3. a nozzle assembly.

Fig. 3 is a perspective part split structure diagram of a leakage preventing device assembly of a nozzle with a leakage preventing device according to an embodiment of the present utility model, and a right side view structure schematic diagram.

1-1, a pressure cabin with a specific structure; 1-2, a piston pull rod; 1-3, a spring; 1-4, a gasket; 1-5, fluid flow direction channel.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements and structures throughout or elements and structures having like or similar functions. The embodiments described below by referring to the drawings are illustrative only and are not meant to limit the utility model.

In the description of the present utility model, the leakage preventing device 1, the sealing ring 2 and the nozzle 3 in the present utility model are not the only external shapes of the present utility model, and the leakage preventing device 1, the sealing ring 2 and the nozzle 3 are introduced to express the structure and the function of the nozzle of the leakage preventing device.

Referring to fig. 1 and 2, the utility model discloses a nozzle with a leakage preventing device, which comprises a leakage preventing device 1, a sealing ring 2 and a nozzle 3.

The leakage-proof device 1 is placed into a cavity of the nozzle 3 from one end of the nozzle 3 to form a closed channel, then the sealing ring 2 is sleeved into the end part of a screw tooth of the nozzle 3, and the screw tooth of the nozzle 3 is connected to a hot melt adhesive gun and a hot melt adhesive machine to realize the leakage-proof function.

Referring to fig. 3, the leakage preventing device comprises a pressure chamber 1-1 with a specific structure, a piston pull rod 1-2, a spring 1-3 and a gasket 1-4.

The piston pull rod 1-2 is placed into the pressure cabin from the external hole of the pressure cabin 1-1 with a specific structure, so that the hemispherical surface on the piston pull rod 1-2 is attached to the cross section of one end of the pressure cabin 1-1 with the specific structure; then the spring 1-3 is put into the piston pull rod 1-2 and the pressure cabin, then the gasket 1-4 is sleeved on the piston pull rod 1-2, the gasket 1-4 is fixed on the piston pull rod 1-2 through riveting fit, the spring 1-3 is in a negative pressure state for a long time, a hemispherical surface on the piston pull rod 1-2 and the pressure cabin 1-1 with a specific structure form a normally closed sealing state, and at the moment, the assembly of the leakage-proof device 1 is completed. When an external force applies pressure along one side of the fluid flow channel (1-5), the hemispherical surface of the piston pull rod 1-2 can be separated from the pressure cabin 1-1 with a specific structure to form a smooth fluid channel. When the pressure is stopped to be applied to the fluid flow channel (1-5), the piston connecting rod 1-2 can be quickly attached to the section of the pressure cabin 1-1 with the specific structure to form a closed channel due to the tension of the spring 1-3, so that the process of leakage prevention and leakage prevention is completed.

In some embodiments of the utility model, the internal structure of the leakage-proof device 1 can be changed in external shape and size and additional elements according to actual application requirements; can exist separately in different shapes and can also be put into the device of the application for use.

In the embodiment of the present utility model, the nozzle 3, the pressure chamber 1-1 of the specific structure, the piston rod 1-2, and the gasket 1-4 are made of metal materials, and may be copper, aluminum, stainless steel, iron or other alloy metal materials. The springs 1-3 are made of metal materials with good elasticity and strong toughness. In the practical application in the technical field, the piston pull rod 1-2 can change the hemispherical shape or increase plastic and rubber with better sealing performance to be used as a sealing gasket.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. A nozzle with a leakage-proof device is characterized in that,

comprises a nozzle (3) as a main body, a leakage-proof device (1) and control parts arranged in the leakage-proof device (1): the pressure chamber (1-1), the piston pull rod (1-2), the spring (1-3) and the gasket (1-4) with specific structures; the leakage-proof device (1) component is arranged in the nozzle (3) to form a complete closed fluid channel;

the leak-proof device (1) is internally provided with a directional elastic normally-closed sealed fluid flow passage, and is characterized in that the leak-proof device (1) takes a pressure cabin (1-1) with a specific structure as a carrier, a pressure cavity is arranged in the leak-proof device, at least 3 control parts are arranged in the leak-proof device, and the control parts comprise:

the piston pull rod (1-2) is arranged corresponding to the pressure cabin (1-1) with the specific structure, and the spherical surface of the piston pull rod (1-2) has the functions of blocking a fluid flow channel (1-5) and opening the fluid flow channel (1-5);

the spring (1-3) is sleeved in the piston pull rod (1-2) and is arranged on the limit in the pressure cavity of the pressure cabin with the specific structure;

the gasket (1-4), the gasket (1-4) compresses the spring (1-3) on the boss of the piston pull rod (1-2), the gasket (1-4) is limited on the piston pull rod (1-2) through riveting an upper shaft end face hole of the piston pull rod (1-2), and the spring (1-3) is in a negative pressure state.

2. Nozzle with leakage protection according to claim 1, characterized in that the pressure chamber in the pressure chamber (1-1) of the specific structure of the assembly of the leakage protection (1) is structural.

3. The nozzle with leakage protection device according to claim 1, characterized in that the nozzle (3), the leakage protection device (1), the specific structure of the pressure chamber (1-1) of the leakage protection device are not limited to changes in appearance, size; not limited to the fabrication materials; the pressure cabin (1-1) with the specific structure of the leakage-proof device (1) is not limited to independently exist; is not limited to being arranged in a fluid channel of equipment such as a hot melt adhesive gun, a hot melt adhesive machine and the like.

4. The nozzle with leakage preventing device according to claim 1, wherein the piston rod (1-2) has a hemispherical shape; the sealing ring is not limited to be added, so that the tightness is improved.

5. A nozzle with leakage protection according to claim 1, characterized in that the end face of the pressure chamber (1-1) of the specific structure forms an elastic normally closed fluid flow channel (1-5) with the piston rod (1-2) outside the pressure chamber under the action of the negative pressure of the spring (1-3).