CN211680582U

CN211680582U - Fixing mechanism for laser welding of sensor

Info

Publication number: CN211680582U
Application number: CN201922282868.6U
Authority: CN
Inventors: 李绍恒; 廉五州; 赵忱; 郝程程; 田佳鑫; 许健; 薛棚
Original assignee: Anshan Wotian Sensing Technology Co ltd
Current assignee: Anshan Wotian Sensing Technology Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-16
Anticipated expiration: 2029-12-18

Abstract

The utility model provides a fixed establishment of sensor laser welding, includes preceding top frock, back top frock, the lantern ring, locating rack, preceding top frock and pressure sensor's terminal cooperation suit, back top frock compresses tightly sensor clamping ring and diaphragm at the front end of pressure sensor base, the lantern ring cup joints with the pressure sensor cooperation and places in between preceding top frock and the back top frock be equipped with the welding hole site on the lantern ring, the welding seam position part of pressure sensor base and diaphragm exposes in welding hole site still be equipped with the draw-in groove on the lantern ring, the tip of locating rack is arranged in the draw-in groove and is used for the fixed lantern ring. The utility model discloses add a sensor laser welding's fixed establishment, be used for the axial positioning to the sensor horizontal direction in sensor clamping ring welding process to can guarantee the accuracy control to the welding seam position at dynamic spin welding's in-process.

Description

Fixing mechanism for laser welding of sensor

Technical Field

The utility model relates to a pressure sensor's production technology especially relates to a sensor laser welding's fixed establishment.

Background

At present, the sealing process of the MEMS pressure sensor mainly adopts a horizontal welding method of laser welding or argon arc welding, and good air tightness, pressure resistance of a welding opening and the overall appearance size of the welded sensor need to be ensured in the welding process. Therefore, the limit control of the sensor base and the pressure ring in the welding process is particularly important.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fixed establishment of sensor laser welding is used for the axial positioning to the sensor horizontal direction in sensor clamping ring welding process to can guarantee the accuracy control to the weld position at dynamic spin welding's in-process.

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

the utility model provides a fixed establishment of sensor laser welding, includes preceding top frock, back top frock, the lantern ring, locating rack, preceding top frock and pressure sensor's terminal cooperation suit, back top frock compresses tightly sensor clamping ring and diaphragm at the front end of pressure sensor base, the lantern ring cup joints with the pressure sensor cooperation and places in between preceding top frock and the back top frock be equipped with the welding hole site on the lantern ring, the welding seam position part of pressure sensor base and diaphragm exposes in welding hole site still be equipped with the draw-in groove on the lantern ring, the tip of locating rack is arranged in the draw-in groove and is used for the fixed lantern ring.

The rear ejection tool comprises a thimble limiting hole, a sleeve ring section and a limiting section, the diameter of the sleeve ring section is matched with the inner diameter of the sleeve ring, the diameter of the limiting section is matched with the inner diameter of the sensor pressing ring, the height of the limiting section is the same as that of the sensor pressing ring, and the thimble limiting hole is formed in the tail of the rear ejection tool.

The front jacking tool is in a hollow annular shape, one end of the front jacking tool is provided with a groove matched with the external size of the pressure sensor base, and the other end of the front jacking tool is a clamping end of a welding machine tool.

And the front jacking tool, the rear jacking tool and the lantern ring are all made of red copper.

Compared with the prior art, the beneficial effects of the utility model are that:

a fixing mechanism for laser welding of a sensor is used for axially positioning the sensor in the horizontal direction in the process of welding a pressure ring of the sensor and can ensure the precision control of the position of a welding seam in the process of dynamic rotary welding.

The utility model discloses processing low cost, the whole body adopts the red copper material, has good thermal diffusivity and durability, the processing of being convenient for. Because heat can be generated in the welding process, the red copper has a good thermal expansion coefficient, and the control precision can be guaranteed when the red copper is heated.

The utility model discloses can realize pressure sensor's horizontal axial fixity, ensure that base, sensor clamping ring, diaphragm remain coaxial at rotatory in-process, can guarantee the control to the precision in dynamic welding process.

Drawings

Fig. 1 is a schematic structural view of the whole tool of the present invention;

FIG. 2 is a view from A-A of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a view from the B-B direction of FIG. 3;

FIG. 5 is a schematic view of a collar construction;

fig. 6 is a schematic structural view of the front roof tool.

In the figure: 1-rear jacking tool, 2-lantern ring, 2-1 clamping groove, 3-front jacking tool, 4-welding hole position, 5-sensor, 6-welding line, 7-positioning frame, 8-thimble limiting hole, 9-sensor compression ring and 10-diaphragm.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.

As shown in fig. 1-6, a fixing mechanism for laser welding of a sensor comprises a front top tool 3, a rear top tool 1, a sleeve ring 2 and a positioning frame 7, wherein the front top tool 3 is matched and sleeved with the tail end of a pressure sensor 5, the rear top tool 1 compresses a sensor pressure ring 9 and a diaphragm 10 at the front end of a base of the pressure sensor 5, the sleeve ring 2 is matched and sleeved with the pressure sensor 5 and is arranged between the front top tool 3 and the rear top tool 1, a welding hole 4 is arranged on the sleeve ring 2, a part of a welding seam 6 between the base of the pressure sensor 5 and the diaphragm 10 is exposed at the welding hole 4, a clamping groove 2-1 is further arranged on the sleeve ring 2, and the end of the positioning frame 7 is arranged in the clamping groove 2-1 and used for fixing the sleeve ring 2.

Back top frock 1 includes spacing hole of thimble 8, lantern ring section, spacing section lantern ring section diameter cooperatees with 2 internal diameters of the lantern ring, spacing section diameter cooperatees with the internal diameter of sensor clamping ring 9, and spacing section height is the same with sensor clamping ring 9 height, spacing hole of thimble 8 sets up the afterbody at back top frock 1.

Preceding top frock 3 is the cavity annular, and the one end of preceding top frock 3 is equipped with the recess with 5 base external dimension matched with of pressure sensor, and the other end of preceding top frock 3 is the welding lathe exposed core.

The front jacking tool 3, the rear jacking tool 1 and the lantern ring 2 are all made of red copper. The rear top tool 1 is inserted with the lantern ring 2.

During the use, at first assemble lantern ring 2 on top frock 1 behind, put diaphragm 10 and sensor clamping ring 9 inside lantern ring 2, put into pressure sensor 5's base again, then assemble in top frock 3 before. The whole tool is installed on a welding station through the thimble limit hole 8 of the rear jacking tool 1 and the clamping end of the welding machine tool of the front jacking tool 3. The collar 2 is radially fixed by means of a spacer 7. During welding, the lantern ring 2 is fixed, and the front jacking tool 3 and the rear jacking tool 1 drive the pressure sensor 5 to rotate. The laser welding light beam welds the welding seam 6 of the pressure sensor 5 through the welding hole position 4 of the lantern ring 2 all the time, so that the sensor base, the sensor pressure ring 9 and the diaphragm 10 can be ensured, and the three are in a concentric state.

Claims

1. The utility model provides a fixed establishment of sensor laser welding, its characterized in that pushes up frock, back frock, lantern ring, locating rack before, preceding top frock and pressure sensor's terminal cooperation suit, back top frock compresses tightly sensor clamping ring and diaphragm at the front end of pressure sensor base, the lantern ring cup joints with the pressure sensor cooperation and places in before between top frock and the back top frock be equipped with the welding hole site on the lantern ring, the welding seam position part of pressure sensor base and diaphragm exposes in welding hole site department still be equipped with the draw-in groove on the lantern ring, the tip of locating rack is arranged in the draw-in groove and is used for the fixed lantern ring.

2. The fixing mechanism for laser welding of the sensor according to claim 1, wherein the back jacking tool comprises a thimble limiting hole, a collar segment, a limiting segment, the diameter of the collar segment is matched with the inner diameter of the collar, the diameter of the limiting segment is matched with the inner diameter of the sensor pressing ring, the height of the limiting segment is the same as that of the sensor pressing ring, and the thimble limiting hole is formed in the tail of the back jacking tool.

3. The fixing mechanism for laser welding of the sensor according to claim 1, wherein the front jacking fixture is hollow and annular, one end of the front jacking fixture is provided with a groove matched with the outer dimension of the pressure sensor base, and the other end of the front jacking fixture is a clamping end of a welding machine tool.

4. The fixing mechanism for laser welding of the sensor according to claim 1, wherein the front top tool, the rear top tool and the lantern ring are made of red copper.