CN216882186U

CN216882186U - Elastic measurement jig

Info

Publication number: CN216882186U
Application number: CN202220349815.0U
Authority: CN
Inventors: 朱志强; 董建成
Original assignee: Fujian Qiangli Photoelectricity Co Ltd
Current assignee: Fujian Qiangli Photoelectricity Co Ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-07-05
Anticipated expiration: 2032-02-21

Abstract

The utility model provides an elasticity measuring jig, includes to be equipped with slidable tensiometer support plate on a bottom plate, is equipped with a tensiometer on the tensiometer support plate, and the pulling end of tensiometer is equipped with one and can extrudees the dog that passes with a tight piece of clamp, and the side of tensiometer support plate is equipped with a micrometer, and the tensiometer support plate moves a stroke after the knob of micrometer rotates, makes the dog pass the pulling stroke of pulling with pressing from both sides tight piece, and the tensiometer measures and presss from both sides tight piece by the extruded elasticity of lapse. The utility model can accurately judge whether the elasticity of the clamping block meets the standard or not so as to facilitate timely adjustment.

Description

Elastic measurement jig

Technical Field

The utility model relates to a jig, in particular to an elastic measuring jig which can be used for detecting a clamping block on a reflow soldering jig.

Background

The reflow soldering apparatus is usually provided with a clamping structure, such as a plurality of elastic clamping blocks, to fix the PCB in position. Because the elasticity of the clamping block has a standard range, the elasticity of the clamping block of the reflow soldering jig can change after a new product is used for a period of time. The traditional method can only judge the elasticity of the jig by hand and feeling, and can not accurately judge whether the elasticity of the clamping block on the jig meets the standard or not. If the elastic force of the clamping block is too large, the PCB is deformed because the PCB is thinner and thinner; when the elastic force of the clamping block is too small, the board cannot be clamped, so that the PCB is easy to deviate during processing, and further unnecessary loss is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an elasticity measuring jig which can accurately judge whether the elasticity of a clamping block meets the standard or not so as to be convenient for timely adjustment.

In order to achieve the above purpose, the solution of the utility model is:

the utility model provides an elasticity measuring jig, includes to be equipped with slidable tensiometer support plate on a bottom plate, is equipped with a tensiometer on the tensiometer support plate, and the pulling end of tensiometer is equipped with one and can extrudees the dog that passes with a tight piece of clamp, and the side of tensiometer support plate is equipped with a micrometer, and the tensiometer support plate moves a stroke after the knob of micrometer rotates, makes the dog will press from both sides tight piece and pass a pulling stroke, and the tensiometer measures and presss from both sides tight piece by the elasticity of pushing extrusion.

Furthermore, two guide rails are arranged on the bottom plate, slide blocks are respectively arranged on the guide rails, and the tension meter support plate is positioned on the two slide blocks.

Furthermore, one side of the tension meter carrier plate, which is opposite to the micrometer, is connected with at least one buffer spring, and the buffer spring is stretched when the tension meter carrier plate moves.

Furthermore, one end of the tension meter carrier plate is connected with two parallel buffer springs, one end of each buffer spring is connected to the end of the tension meter carrier plate, and the other end of each buffer spring is fixed on the bottom plate.

Furthermore, the elasticity measuring jig is used for measuring the elasticity of the clamping blocks in the reflow soldering jig, a plurality of clamping pieces used for positioning the PCB are arranged on the periphery of the reflow soldering jig, and the clamping pieces with elasticity are arranged in the clamping pieces.

Furthermore, the clamping piece comprises a clamping block arranged on one side of the base, one end of the clamping block freely protrudes out of the base, and the other end of the clamping block is elastically pressed by the elastic tops of the two elastic sheets to realize elastic compression.

Furthermore, one end of the bottom plate opposite to the tension meter support plate is provided with a support table, and the support table is provided with a support plate supported on the bottom surface of the reflow soldering jig.

Furthermore, a support frame is arranged in the bottom plate, a jig stop bar is erected on the support frame and is positioned above the tension meter, and the jig stop bar is stopped outside the side edge of the reflow soldering jig.

Furthermore, a step is arranged in the jig barrier strip, and the outer side edge of the reflow soldering jig is erected in the step.

After adopting above-mentioned structure, during the test, put elasticity measurement tool in reflow soldering tool below, the dog on the tensiometer withstands and presss from both sides tight piece, can drive the tensiometer support plate and remove along with the tensiometer through the micrometer screw rod of the knob micrometer of rotating the micrometer to make the dog will press from both sides tight piece outwards pulling certain stroke, the numerical value that shows on the tensiometer at this moment is the elasticity of this tight piece of clamp, is the best elasticity this moment. The utility model has simple integral structure and accurate test, and can accurately judge whether the elasticity of the clamping block on the reflow soldering jig meets the standard through simple operation so as to be convenient for timely adjustment, thereby avoiding the problems of springboard and board deformation.

Drawings

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

FIG. 2 is an exploded view of the present invention (with one of the clamping members of the reflow tool);

FIG. 2A is an enlarged view of a portion of FIG. 2 at A (showing the clamping member);

fig. 3 and 4 are schematic views of the usage state of the present invention.

Description of reference numerals: reflow soldering tool 1, clamping piece 10, clamping block 11, base 12, spring piece 13, limiting groove 14, elasticity measuring tool 2, bottom plate 21, tension recording plate 22, buffer spring 221, tension meter 23, stop block 231, micrometer 24, knob 241, guide rail 25, slide block 251, support table 26, support plate 261, support frame 27, tool stop strip 28 and step 281.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

Referring to fig. 1 to 4, the present invention discloses an elasticity measuring fixture, which can be used for measuring the elasticity of a clamping block 11 in a reflow soldering fixture 1, wherein the elasticity measuring fixture 2 includes a tension meter carrier plate 22 slidably disposed on a bottom plate 21, a tension meter 23 disposed on the tension meter carrier plate 22, and a stop block 231 for pushing and moving the clamping block 11 is disposed at a pulling end of the tension meter 23, and the clamping block 11 in this embodiment is pushed and moved outwards when performing clamping and positioning. A micrometer 24 is arranged on the side edge of the tension meter carrier plate 22, the tension meter carrier plate 22 moves outwards for a stroke after the knob 241 of the micrometer 24 rotates, so that the stop block 231 pulls the clamping block 11 outwards for a stroke, at this time, the tension meter 23 measures the elastic force of the clamping block 11 which is extruded outwards, and the numerical value displayed on the tension meter is the elastic force value of the clamping block 11.

In this embodiment, the reflow soldering jig 1 is provided with a plurality of clamping members 10 around the periphery thereof for positioning the PCB, the clamping members 10 are provided with elastic clamping blocks 11, and the periphery of the PCB is supported and positioned by the clamping blocks 11 during use. As shown in fig. 2 and fig. 2A, in the present embodiment, the clamping member 10 may include a clamping block 11 disposed on one side of a base 12, one end of the clamping block 11 freely protrudes out of the base 12, and the other end of the clamping block 11 is elastically pressed by two elastic sheets 13 to achieve elastic compression. A limiting groove 14 may be formed in the base 12, the front end of each spring 13 is inserted into the clamping block 11, the elastic leg at the end of the spring 13 is supported in the limiting groove 14, and the clamping block 11 is limited in the elastic space in the limiting groove 14 to move forward and backward in a compression manner.

Specifically, in the elastic measuring jig, two guide rails 25 may be disposed on the bottom plate 21, each guide rail is respectively provided with a slider 251, the tension meter carrier 22 is disposed on the two sliders 251, and the sliders 251 can slide on the guide rails 25, so as to drive the tension meter carrier 22 to move. At the same time, at least one buffer spring 221 is connected to a side of the tension meter carrier plate 22 opposite to the micrometer 24, and the buffer spring 221 can be stretched when the tension meter carrier plate 22 moves outward. In this embodiment, two parallel buffer springs 221 are connected to one end of the tension meter carrier plate 22, one end of each buffer spring 221 is connected to an end of the tension meter carrier plate 22, and the other end of each buffer spring 221 is fixed to the bottom plate 21. Cushioning is provided by cushioning springs 221 as tension meter carrier plate 22 is moved.

Furthermore, a supporting platform 26 may be further disposed at an end of the bottom plate 21 opposite to the tension meter supporting plate 22, and a supporting plate 261 is disposed on the supporting platform 26 and can be supported on the bottom surface of the reflow soldering fixture 1. A supporting frame 27 can be further disposed in the bottom plate 21, a jig stopping strip 28 is erected on the supporting frame 27 and is located above the tension meter 23, and the jig stopping strip 28 can be stopped just outside the side edge of the reflow soldering jig 1. A step 281 is provided in the jig stopper 28, and the outer side of the reflow jig 1 is placed on the step 281. Through the limit of the tool stop strip 28 and the supporting function of the supporting plate 261, the elasticity measuring tool 2 and the reflow soldering tool 1 can be matched to perform the overall measurement work more stably.

When the reflow soldering jig 1 is used, the clamping blocks 11 can be in interference with the PCB by 0.5mm when the reflow soldering jig 1 is designed, and the PCB is in contact with the clamping blocks 11 when the clamping blocks 11 on the two sides of the reflow soldering jig are pulled outwards by 0.5mm respectively. During testing, the elasticity measuring jig 2 is placed below the reflow soldering jig 1, the stop block 231 on the tension meter 23 abuts against the clamping block 11, and the micrometer screw of the micrometer 24 can drive the tension meter carrier plate 22 and the tension meter 23 to move 0.5mm by rotating the knob 241 of the micrometer 24 (the movable scale of the micrometer rotates for a circle, and the micrometer screw can move forward or backward for 0.5 mm), so that the stop block 231 pulls the clamping block 11 outwards for 0.5mm of travel, at this time, the numerical value displayed on the tension meter 23 is the elasticity of the clamping block 11, and at this time, the optimal elasticity is obtained. By using the elasticity measuring jig 2, whether the elasticity of the clamping block 11 meets the standard or not can be accurately judged, and then the elasticity is adjusted in time, so that the problems of springboard and board deformation are avoided.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. The utility model provides an elasticity measurement tool which characterized in that: the tension meter comprises a slidable tension meter support plate arranged on a bottom plate, a tension meter is arranged on the tension meter support plate, a stop dog capable of extruding and pushing a clamping block is arranged at the pulling end of the tension meter, a micrometer is arranged on the side edge of the tension meter support plate, the tension meter support plate moves for a stroke after a knob of the micrometer rotates, the stop dog pushes and pulls the clamping block for a stroke, and the tension meter measures the elastic force of pushing and extruding the clamping block.

2. The elasticity measuring jig of claim 1, wherein: the bottom plate is provided with two guide rails, each guide rail is provided with a slide block, and the tension meter support plate is positioned on the two slide blocks.

3. The elasticity measuring jig of claim 1 or 2, wherein: one side of the tension meter support plate, which is opposite to the micrometer, is connected with at least one buffer spring, and the buffer spring is stretched when the tension meter support plate moves.

4. The elasticity measuring jig of claim 3, wherein: one end of the tension meter carrier plate is connected with two parallel buffer springs, one end of each buffer spring is connected to the end of the tension meter carrier plate, and the other end of each buffer spring is fixed on the bottom plate.

5. The elasticity measuring jig of claim 1, wherein: the elasticity measuring jig is used for measuring the elasticity of the clamping blocks in the reflow soldering jig, a plurality of clamping pieces used for positioning the PCB are arranged on the periphery of the reflow soldering jig, and the clamping pieces with elasticity are arranged in the clamping pieces.

6. The elasticity measuring jig of claim 5, wherein: the clamping piece comprises a clamping block arranged on one side of a base, one end of the clamping block freely protrudes out of the base, and the other end of the clamping block is elastically pressed by the elastic supports of the two elastic sheets to realize elastic compression.

7. The elasticity measuring jig of claim 5, wherein: one end of the bottom plate opposite to the tension meter support plate is provided with a support table, and the support table is provided with a support plate which is supported on the bottom surface of the reflow soldering jig.

8. The elasticity measuring jig of claim 5 or 6, wherein: a supporting frame is arranged in the bottom plate, a jig stopping strip is erected on the supporting frame and is positioned above the tension meter, and the jig stopping strip is stopped outside the side edge of the reflow soldering jig.

9. The elasticity measuring jig of claim 8, wherein: the jig stop strip is provided with a step, and the outer side edge of the reflow soldering jig is erected in the step.