CN217009065U

CN217009065U - Contactor copper pipe sealing mechanism

Info

Publication number: CN217009065U
Application number: CN202220477020.8U
Authority: CN
Inventors: 徐益飞; 刘奋; 尤海飞
Original assignee: Weifa Electronic Technology Changzhou Co ltd
Current assignee: Weifa Electronic Technology Changzhou Co ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-19
Anticipated expiration: 2032-03-04

Abstract

The utility model provides a copper tube sealing mechanism of a contactor, wherein a copper tube is eccentrically arranged at the bottom of a sealing cover, the sealing mechanism comprises a positioning seat, the positioning seat is provided with a positioning groove matched with the sealing cover, the bottom of the positioning groove is provided with a limiting hole matched with the copper tube, the copper tube penetrates through the limiting hole and extends to the lower part of the positioning seat, two sides of the part, below the positioning seat, of the copper tube are oppositely provided with a first tool bit and a second tool bit, the first tool bit and/or the second tool bit are/is provided with a driving device for driving the first tool bit and the second tool bit to mutually approach and break and seal the copper tube, the first tool bit and the second tool bit are both in a cone shape with a narrow front part and a wide back part, and the working ends of the first tool bit and the second tool bit are cambered surfaces. According to the copper pipe sealing mechanism for the contactor, provided by the utility model, the copper pipe is arranged between the first cutter head and the second cutter head, the copper pipe is deformed by extruding the shape of the cutter heads, the cut edges are tightly attached together, sealing is realized, and the sealing effect is good.

Description

Contactor copper pipe sealing mechanism

Technical Field

The utility model relates to the technical field of contactors, in particular to a copper pipe sealing mechanism of a contactor.

Background

When the direct current electromagnetic contactor is assembled, the interior of the direct current electromagnetic contactor needs to be vacuumized, then arc extinguishing gas is filled, and after the arc extinguishing gas is filled, a copper pipe needs to be sealed, so that the arc extinguishing gas cannot be scattered out of the contactor. Patent (CN206401237U) mentions that the copper tube is placed between two blades and the sealing is achieved by the cutting edges being brought into close contact by the compressive deformation of the two blades. However, the general blade can only achieve the purpose of breaking the copper tube by extrusion, and cannot achieve the effect of sealing the copper tube, and the patent does not mention the specific structure of the blade, so how to design the structure capable of breaking and sealing the copper tube by extrusion is a problem to be considered by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides a contactor copper pipe sealing mechanism.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a copper tube sealing mechanism of a contactor is characterized in that a copper tube is eccentrically arranged at the bottom of a sealing cover, the sealing mechanism comprises a positioning seat, a positioning groove matched with the sealing cover is arranged on the positioning seat, a limiting hole matched with the copper tube is arranged at the bottom of the positioning groove, the copper tube penetrates through the limiting hole and extends to the position below the positioning seat, a first tool bit and a second tool bit are oppositely arranged on two sides of the part, below the positioning seat, of the copper tube, the first tool bit is narrow in front and wide in back, the front end of the first tool bit comprises an extrusion sealing part, an upper pre-extrusion part and a lower pre-extrusion part, the upper pre-extrusion part and the lower pre-extrusion part are arranged on two sides of the extrusion sealing part, the extrusion sealing part is a plane with the height of 0.5mm-0.8mm, the upper pre-extrusion part and the lower pre-extrusion part are cambered surfaces with the radius of 1-1.5mm, the upper pre-extrusion part and the lower pre-extrusion part are tangent to the extrusion sealing part, and the second tool bit is the same as the first tool bit, and the first cutter head and/or the second cutter head are/is provided with a driving device for driving the first cutter head and the second cutter head to mutually approach and break and seal the copper pipe.

The positioning seat is provided with the positioning groove, the position of the sealing cover is fixed between the positioning groove and the sealing cover through friction force, and the position of the copper pipe is determined through the limiting hole, so that the position of the copper pipe is unique, the product is convenient to assemble, and the efficiency is high; when injecting arc extinguishing gas into the closing cap through the copper pipe, extrude the copper pipe through first tool bit and second tool bit each other, because the work end of first tool bit and second tool bit is little cambered surface, the wide toper in narrow back before the tool bit is, in addition the shape of copper pipe changes easily, consequently, the extrusion through the tool bit shape makes the copper pipe warp, and the edge that cuts off is closely laminated together, realizes sealedly, and is sealed effectual.

Furthermore, in order to break and seal the copper pipe in an extruding way, the driving device comprises a fixing block and a sliding block which are arranged oppositely, the positioning seat is fixedly connected with the fixing block, the first tool bit is abutted to the side wall of the copper pipe, the second tool bit is fixedly connected with the sliding block, and a hydraulic cylinder is arranged at one end, far away from the fixing block, of the sliding block. The copper pipe hydraulic cylinder drives the sliding block to drive the second cutter head to move towards the direction of the copper pipe, the first cutter head is used as a fixed cutter to abut against the side wall of the copper pipe, and the first cutter head and the second cutter head are matched with each other to break and seal the copper pipe in an extruding mode.

Furthermore, in order to guarantee the stability that the second tool bit removed, ensure that second tool bit and first tool bit are on the coplanar, be equipped with the slide bar that sets up towards the slide block direction on the fixed block, slide block and slide bar sliding connection, be equipped with reset spring between slide block and the fixed block, one side that the fixed block was kept away from to the slide block is equipped with the stopper. The sliding block copper pipe sliding rod moves, and the stability of the sliding block in moving is guaranteed, so that the stability of the second tool bit in moving is guaranteed. The limiting block is used for limiting the position of the sliding block.

Furthermore, in order to control the moving stroke of the second tool bit, a limiting groove for preventing the first tool bit and the second tool bit from colliding with the tool is arranged on the sliding block, and the limiting groove is matched with the positioning seat. When the limiting groove on the sliding block is matched with the outer wall surface of the positioning seat, the copper pipe is just broken and sealed by the second tool bit and the first tool bit, and the first tool bit and the second tool bit are prevented from colliding to cause part damage.

Furthermore, in order to ensure the stability of the whole mechanism, the fixed block, the limiting block and the hydraulic cylinder are arranged on the rack.

The utility model has the beneficial effects that: according to the copper pipe sealing mechanism for the contactor, provided by the utility model, the working ends of the first cutter head and the second cutter head are cambered surfaces, the cutter heads are in a conical shape with a narrow front part and a wide back part, in addition, the shape of the copper pipe is easy to change, the copper pipe is arranged between the first cutter head and the second cutter head, the copper pipe is deformed through the extrusion of the shape of the cutter heads, the cut edges are tightly attached together, the sealing is realized, and the sealing effect is good.

Drawings

The utility model is further illustrated by the following examples in conjunction with the drawings.

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is an enlarged schematic view of A of FIG. 1;

FIG. 3 is a schematic structural view of a product;

FIG. 4 is a schematic structural diagram of the positioning seat;

fig. 5 is a schematic view of the cutter head.

In the figure: 1. the sealing device comprises a sealing cover, 2 parts of a copper pipe, 3 parts of a positioning seat, 301 parts of a positioning groove, 302 parts of a limiting hole, 4 parts of a first tool bit, 401 parts of an extrusion sealing part, 402 parts of an upper pre-extrusion part, 403 parts of a lower pre-extrusion part, 5 parts of a second tool bit, 6 parts of a fixing block, 7 parts of a sliding block, 701 parts of a limiting groove, 8 parts of a hydraulic cylinder, 9 parts of a sliding rod, 10 parts of a reset spring, 11 parts of a limiting block, 12 parts of a rack.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

As shown in fig. 1-5, in the copper tube sealing mechanism for a contactor according to the present invention, a copper tube 2 is eccentrically disposed at the bottom of a sealing cover 1, the sealing mechanism includes a positioning seat 3, a positioning groove 301 which is matched with the sealing cover 1 is disposed on the positioning seat 3, a limiting hole 302 which is matched with the copper tube 2 is disposed at the bottom of the positioning groove 301, the copper tube 2 passes through the limiting hole 302 and extends to the lower side of the positioning seat 3, a first tool bit 4 and a second tool bit 5 are disposed at two sides of the lower portion of the positioning seat 3, the first tool bit 4 is narrow in front and wide in rear, the front end of the first tool bit 4 includes a squeeze sealing portion 401, and an upper pre-extrusion portion 402 and a lower pre-extrusion portion 403 which are disposed at two sides of the squeeze sealing portion 401, the squeeze sealing portion 401 is a plane with a height of 0.5mm to 0.8mm, the upper pre-extrusion portion 402 and the lower pre-extrusion portion 403 are cambered surfaces with a radius of 1 mm to 1.5mm, the upper pre-extrusion part 402 and the lower pre-extrusion part 403 are tangent to the extrusion sealing part 401, the second cutter head 5 has the same structure as the first cutter head 4, and the second cutter head 5 is provided with a driving device for driving the first cutter head 4 and the second cutter head 5 to mutually approach to each other, break and seal the copper pipe 2.

Drive arrangement is including relative fixed block 6 and the sliding block 7 that sets up,

positioning seat

3 and 6 fixed connection of fixed block, first tool bit 4 with 6 fixed connection of fixed block, first tool bit 4 supports to locate on 2 lateral walls of copper pipe, second tool bit 5 with sliding block 7 fixed connection, the one end that fixed block 6 was kept away from to sliding block 7 is equipped with pneumatic cylinder 8.

Be equipped with the slide bar 9 towards the setting of sliding block 7 direction on the fixed block 6, sliding block 7 and slide bar 9 sliding connection, be equipped with reset spring 10 between sliding block 7 and the fixed block 6, one side that fixed block 6 was kept away from to sliding block 7 is equipped with stopper 11.

The sliding block 7 is provided with a limiting groove 701 for preventing the first tool bit 4 and the second tool bit 5 from colliding with the tool, and the limiting groove 701 is matched with the positioning seat 3.

The fixed block 6, the limiting block 11 and the hydraulic cylinder 8 are arranged on the rack 12.

The working process is as follows:

a worker places the contactor into the positioning groove 301, the copper pipe 2 corresponds to the position of the limiting hole 302, the copper pipe 2 extends to a position between the first cutter head 4 and the second cutter head 5, the first cutter head 4 is abutted to the side wall of the copper pipe 2 as a fixed cutter, when arc extinguishing gas is injected into the sealing cover 1 through the copper pipe 2, the hydraulic cylinder 8 drives the sliding block 7 to move towards the direction of the fixed block 6, so that the second cutter head 5 is driven to move towards the direction of the first cutter head 4, and when the limiting groove 701 on the sliding block 7 is matched with the outer wall surface of the positioning seat 3, the copper pipe 2 is just squeezed and broken by the second cutter head 5 and the first cutter head 4 and is sealed; then the hydraulic cylinder 8 contracts, the sliding block 7 is far away from the fixed block 6 under the action of the return spring 10, and the processing is finished.

Directions and references (e.g., up, down, left, right, etc.) may be used in the present disclosure only to aid in the description of features in the figures. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

In light of the foregoing description of preferred embodiments in accordance with the utility model, it is intended that the appended claims be interpreted as including all such alterations and modifications as fall within the true spirit and scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a contactor copper pipe sealing mechanism, copper pipe (2) off-centre set up in the bottom of closing cap (1), its characterized in that: the sealing mechanism comprises a positioning seat (3), a positioning groove (301) matched with a sealing cover (1) is arranged on the positioning seat (3), a limiting hole (302) matched with a copper pipe (2) is formed in the bottom of the positioning groove (301), the copper pipe (2) penetrates through the limiting hole (302) and extends to the lower portion of the positioning seat (3), a first cutter head (4) and a second cutter head (5) are oppositely arranged on two sides of the lower portion of the positioning seat (3) of the copper pipe (2), the first cutter head (4) is narrow in front and wide in back, the front end of the first cutter head (4) comprises an extrusion sealing portion (401), an upper pre-extrusion portion (402) and a lower pre-extrusion portion (403) which are arranged on two sides of the extrusion sealing portion (401), the extrusion sealing portion (401) is a plane with the height of 0.5mm-0.8mm, and the upper pre-extrusion portion (402) and the lower pre-extrusion portion (403) are cambered surfaces with the radius of 1-1.5mm, go up portion of extrudeing (402) in advance and extrude portion (403) down and all seal portion (401) with the extrusion tangent, second tool bit (5) are the same with first tool bit (4) structure, be equipped with on first tool bit (4) and/or second tool bit (5) and be used for the drive first tool bit (4) and second tool bit (5) are close to each other and crowd absolutely and seal the drive arrangement of copper pipe (2).

2. A contactor copper tube sealing mechanism as claimed in claim 1, wherein: drive arrangement is including relative fixed block (6) and sliding block (7) that set up, positioning seat (3) and fixed block (6) fixed connection, first tool bit (4) with fixed block (6) fixed connection, first tool bit (4) support locate on copper pipe (2) lateral wall, second tool bit (5) with sliding block (7) fixed connection, the one end that fixed block (6) were kept away from in sliding block (7) is equipped with pneumatic cylinder (8).

3. A contactor copper tube sealing mechanism as claimed in claim 2, wherein: be equipped with on fixed block (6) towards slide bar (9) that sliding block (7) direction set up, sliding block (7) and slide bar (9) sliding connection, be equipped with reset spring (10) between sliding block (7) and fixed block (6), one side that fixed block (6) were kept away from in sliding block (7) is equipped with stopper (11).

4. A contactor copper tube sealing mechanism as claimed in claim 3, wherein: the sliding block (7) is provided with a limiting groove (701) for preventing the first tool bit (4) and the second tool bit (5) from colliding with the tool, and the limiting groove (701) is matched with the positioning seat (3).

5. The contactor copper tube sealing mechanism as claimed in claim 4, wherein: the fixed block (6), the limiting block (11) and the hydraulic cylinder (8) are all arranged on the rack (12).