CN213929626U

CN213929626U - Improved electromagnetic valve structure of hydraulic tool with continuous crimping function

Info

Publication number: CN213929626U
Application number: CN202022495961.8U
Authority: CN
Inventors: 林仁福
Original assignee: Zhejiang Yimizi Tools Co ltd
Current assignee: Zhejiang Yimizi Tools Co ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-08-10
Anticipated expiration: 2030-11-02

Abstract

The utility model discloses an improved solenoid valve structure of a hydraulic tool with continuous crimping function, which comprises a valve body, a fixed iron core, a movable iron core and a valve core arranged at the head part of the movable iron core, wherein a reset spring with precompression is arranged between the valve core and the valve body, and the rear end of the movable iron core extends into a central inner hole of the fixed iron core; and the rear end of the valve core or the front end of the valve body is provided with an insulating gasket which can completely separate the valve core from the valve body. The utility model discloses a pair of crimping function hydraulic tool's solenoid valve improves structure in succession, it can stop at fundamentally and form the magnetic field loop between case and the valve body, guarantees the normal reset of case, has the characteristics that simple structure is practical.

Description

Improved electromagnetic valve structure of hydraulic tool with continuous crimping function

Technical Field

The utility model relates to a crimping function hydraulic tool in succession specifically is a crimping function hydraulic tool's solenoid valve improves structure in succession.

Background

In some hydraulic tools with continuous crimping function, corresponding solenoid valves are usually provided to open and close the oil passages.

Here, the conventional electromagnetic valve structure generally includes a valve body, a fixed iron core, a movable iron core, and a valve core disposed at a head of the movable iron core, and a return spring is disposed between the valve core and the valve body. In the course of the work, decide the iron core and produce magnetic attraction through solenoid's circular telegram to adsorb and move the iron core and further compress reset spring and make the case shift back and open, and one but the solenoid outage of deciding the iron core, the magnetic attraction of deciding the iron core will disappear, and the case and move the iron core and will shift forward under the effect of reset spring reset force and reset this moment.

In above working process, because of valve body and case all form for the metal material processing equally, in case the case is opened the back and is connected with the valve body counterbalance, will form the magnetic field loop between case and valve body, the iron core solenoid is decided to the circular telegram this moment can form magnetic attraction in this magnetic field loop equally to make the valve body adsorb the case, and this magnetic attraction can make both also unable separation in the outage of iron core solenoid, thereby the unable circumstances that resets of case appears, lead to the unable normal work of hydraulic means.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a crimping function hydraulic tool's solenoid valve improves structure in succession, and it can stop to form the magnetic field loop between case and the valve body at fundamentally, guarantees the normal reset of case, has simple structure practical characteristics.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a crimping function hydraulic tool's solenoid valve improves structure in succession, includes the valve body, decides the iron core, moves the iron core and sets up the case moving the iron core head, be provided with the reset spring who has the precompression volume between case and the valve body, the rear end that moves the iron core stretches into in the central hole of deciding the iron core, its characterized in that: and the rear end of the valve core or the front end of the valve body is provided with an insulating gasket which can completely separate the valve core from the valve body.

More specifically, the insulating spacer is made of plastic, rubber or ceramic.

More specifically, the rear end of the valve body is provided with a plug, the front end of the plug extends into a central inner hole of the fixed iron core, and the front end face of the plug is provided with a conical guide hole; the tail part of the movable iron core is provided with a conical head, and the conical degree of the conical head corresponds to the conical degree of the guide hole in a matched mode.

The utility model discloses be provided with insulating gasket on case rear end or valve body front end, even the valve core shifts back and opens in the work, also unable and valve body direct contact to fundamentally has stopped forming the magnetic field loop between case and the valve body, makes both can not produce magnetic attraction and adsorb in the whole in-process of opening of solenoid valve, can guarantee that the normal pop-up of case resets.

Here, in order to further improve the reliability of the internal and external expansion of the movable iron core, the rear end of the valve body is provided with a plug, a tapered guide hole arranged on the front end surface of the plug is matched and corresponds to a tapered head at the tail of the movable iron core, and the centering guidance of the movable iron core moving backwards and opening can be effectively improved, so that the normal opening and closing operation of the valve core is ensured.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a sectional view of the present invention.

Detailed Description

As shown in fig. 1 and 2, an improved electromagnetic valve structure of a hydraulic tool with continuous crimping function comprises a valve body 1, a fixed iron core 2, a movable iron core 3 and a valve core 4 arranged at the head of the movable iron core 3, wherein the fixed iron core 2 is arranged in the valve body 1, and a central inner hole 21 which is through from front to back is arranged in the center of the fixed iron core 2; the rear end of the movable iron core 3 extends into a central inner hole 21 of the fixed iron core 2; a stop boss 41 is arranged outside the valve core 4, and a return spring 5 with precompression quantity is arranged between the stop boss 41 and the front end of the valve body 1.

And an insulating gasket 6 capable of completely separating the valve core from the valve body is arranged at the rear end of the valve core 4 or the front end of the valve body 1. The insulating gasket 6 is made of plastic, rubber, ceramic or the like, and is selected in practice according to needs. In the figure, the insulating spacer 6 is provided at the rear end of the valve body 4, and may be provided at the front end surface of the valve body 1 in actual use.

The insulating gasket 6 that the structure set up plays effectual isolated effect, even the case 4 moves back and opens in the work, also can't make its and valve body 1 direct contact to fundamentally has stopped the condition that forms the magnetic field loop between case 4 and the valve body 1, makes both can not produce magnetic attraction and adsorb in the whole opening process of solenoid valve, can guarantee that the normal pop-up of case 4 resets after the outage.

A plug 7 is arranged at the rear end of the valve body 1, the front end of the plug 7 extends into the central inner hole 21 of the fixed iron core 2, and a conical guide hole 71 is arranged on the front end face of the plug 7; the tail part of the movable iron core 3 is provided with a conical head 31, and the conical degree of the conical head 31 corresponds to the conical degree fit of the guide hole 71. In operation, the guide hole 71 can play a good role in guiding the conical head 31, and can effectively improve the centering property of the movable iron core 3 after moving backwards and opening, so that the normal opening and closing operation of the valve core 4 is ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a crimping function hydraulic tool's solenoid valve improves structure in succession, includes the valve body, decides the iron core, moves the iron core and sets up the case moving the iron core head, be provided with the reset spring who has the precompression volume between case and the valve body, the rear end that moves the iron core stretches into in the central hole of deciding the iron core, its characterized in that: and the rear end of the valve core or the front end of the valve body is provided with an insulating gasket which can completely separate the valve core from the valve body.

2. The improved structure of the electromagnetic valve of the hydraulic tool with the continuous crimping function as claimed in claim 1, wherein: the insulating gasket is made of plastic, rubber or ceramic.

3. An improved structure of an electromagnetic valve of a hydraulic tool with continuous crimping function according to claim 1 or 2, characterized in that: a plug is arranged at the rear end of the valve body, the front end of the plug extends into a central inner hole of the fixed iron core, and a conical guide hole is formed in the front end face of the plug; the tail part of the movable iron core is provided with a conical head, and the conical degree of the conical head corresponds to the conical degree of the guide hole in a matched mode.