CN220772158U - Flexible contact induction pin length measuring device - Google Patents
Flexible contact induction pin length measuring device Download PDFInfo
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- CN220772158U CN220772158U CN202322556178.1U CN202322556178U CN220772158U CN 220772158 U CN220772158 U CN 220772158U CN 202322556178 U CN202322556178 U CN 202322556178U CN 220772158 U CN220772158 U CN 220772158U
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- length
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- 230000006698 induction Effects 0.000 title claims abstract description 24
- 238000005259 measurement Methods 0.000 claims description 18
- 239000013013 elastic material Substances 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a flexible contact induction pin length measuring device, which comprises a reference limiting structure, a pin assembly, a pin sensor and a sensor, wherein the reference limiting structure is used for limiting a pin assembly to be tested; the pin corresponding to the pin assembly is provided with a measuring module, and the measuring module is close to or far away from the pin along the length direction of the pin; one end, close to the pin, of the measuring module is a measuring end, a measuring hole for the pin to be inserted is formed in the measuring end, and the measuring hole is used for sensing the length of the pin extending into the hole; and an induction element is fixedly arranged in the measuring hole, and the induction element is in flexible contact with the end part of the pin. The utility model flexibly contacts with the pins to play a role of buffering, thereby reducing the external force applied to the pins and avoiding the pins from being deformed under pressure.
Description
Technical Field
The utility model relates to the technical field of pin detection equipment, in particular to a pin length measuring device for flexible contact induction.
Background
In the circuit element, the pin is used for being inserted relative to a bonding pad on the PCB, and the length of the pin of the circuit element has higher precision requirement for the complex PCB of the multi-layer circuit. Because the pin is fine in structure, the common measuring method has non-contact optical measurement, the measuring method has higher requirements on positioning accuracy, otherwise, larger errors occur in the measuring result, and the optical equipment for measuring has higher relative cost. There are also physical measurements of contact type, such as high precision ruler measurements, which are cumbersome and inefficient to measure and are not suitable for batch measurements. The sensor senses different pin lengths through the contact type sensor, whether the pin length meets the requirements is judged through comparing the sensed values, the measuring mode is relatively high in measuring precision, but high-frequency and rapid direct collision contact has a large influence on the service life of the sensor, and bending deformation of the pin is easy to cause.
Disclosure of Invention
The utility model aims to: in order to overcome the defects in the prior art, the utility model provides the flexible contact induction pin length measuring device which is flexibly contacted with the pins to play a buffering role, so that the external force applied to the pins is reduced, and the pins are prevented from being deformed under pressure.
The technical scheme is as follows: in order to achieve the above purpose, the flexible contact sensing pin length measuring device of the present utility model includes a reference limiting structure for limiting a pin assembly to be tested; the pin corresponding to the pin assembly is provided with a measuring module, and the measuring module is close to or far away from the pin along the length direction of the pin; one end, close to the pin, of the measuring module is a measuring end, a measuring hole for the pin to be inserted is formed in the measuring end, and the measuring hole is used for sensing the length of the pin extending into the hole; and an induction element is fixedly arranged in the measuring hole, and the induction element is in flexible contact with the end part of the pin.
Further, the sensing end of the sensing element indirectly contacts the end of the pin through an elastic medium.
Further, the sensing element adopts a pressure sensor.
Further, the part of the elastic medium, which is in contact with the pin, is a piston structure, the piston structure is in axially sliding fit with the measuring hole, and a closed section of air cavity is formed between the piston structure and the sensing end of the sensing element.
Further, the contact surface of the piston structure and the pin is made of elastic materials.
Further, the reference limiting structure comprises limiting sliding grooves for limiting the pin assemblies on two sides, and the pin assemblies are attached to the groove walls on two sides of the limiting sliding grooves in a sliding mode; the pin assembly is characterized by further comprising a lateral clamping plate which is perpendicular to the length direction of the limiting chute and far away from or close to the limiting chute, and the lateral clamping plate is used for limiting the pin assembly to slide relative to the limiting chute.
The beneficial effects are that: the flexible contact induction pin length measuring device adopts the induction element for contact measurement, has low cost, is convenient and quick to measure, and has higher precision; the reciprocating plug-in type measuring structure is adopted, so that the measuring device is suitable for high-frequency batch measurement and high in measuring efficiency; the induction end of the induction element is flexibly contacted with the pin, so that the service life of the induction element is prolonged, and the pin is prevented from being bent and deformed under pressure.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a reference limiting structure according to an embodiment of the present utility model.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
The flexible contact sensing pin length measuring device as shown in fig. 1-2 comprises a reference limiting structure 1 for limiting a pin assembly 2 to be tested; a measuring module 3 is arranged corresponding to the pin 21 of the pin assembly 2, and the measuring module 3 is close to or far from the pin 21 along the length direction of the pin 21; one end of the measuring module 3, which is close to the pin 21, is a measuring end, the measuring end is provided with a measuring hole 31 into which the pin 21 is inserted, and the measuring hole 31 is used for sensing the length of the pin 21 extending into the hole; an induction element 32 is fixedly arranged at the inner end of the measuring hole 31, and the induction element 32 is in flexible contact with the end part of the pin 21.
The scheme adopts an induction element contact type measurement method, judges whether the measured pin length meets the requirement by comparing an induction result with a preset value, and reflects whether the measured pin length is too long or too short compared with the required length. The cost is lower compared with optical measurement, and the precision is higher compared with manual measurement. And by adopting a corresponding plug-in measuring method, only the pins can be stably inserted into the measuring holes, and the requirement on positioning accuracy is low. And the reciprocating motion is adopted to realize the matching and separation of the measuring module and the pin to be measured, so that the device is suitable for batch detection of high frequency, and the detection efficiency can be effectively improved.
In high-frequency batch measurement, a measurement module is in contact with the pins rapidly, the pins are separated rapidly after stable values are obtained, and the reference surface of the reference limiting structure 1 is used as a reference, and the distance of each reciprocating movement of the measurement module is consistent, so that the obtained values are ensured to have effective referential. According to the scheme, the flexible contact between the induction element and the pin plays a role in buffering the induction element and the pin in quick contact, so that the large impact force generated by the quick contact is prevented from directly acting on the pin and the induction element, the service life of the induction element is prolonged, and bending deformation of the pin is effectively avoided. The numerical value obtained by the sensing element is continuously changed in the process, and after the measuring module is completely moved in place and the measured numerical value of the sensing element is stable, the measured numerical value is used as a final measured value, so that the measuring precision is ensured.
Embodiment one:
the sensing end of the sensing element 32 indirectly contacts the end of the pin 21 through an elastic medium. The sensing element 32 is a pressure sensor. The elastic medium has a good buffering effect, the purpose of flexible contact can be achieved, and after the elastic medium is pressed and deformed, stable elastic force and pressure sensor can be applied, so that a pressure value corresponding to the length of the pin is obtained, the obtained pressure value is compared with a preset pressure value, and whether the length of the pin meets the requirement is judged.
Embodiment two:
the part of the elastic medium, which is in contact with the pin 21, is a piston structure 4, the piston structure 4 is in axially sliding fit with the measuring hole 31, and a closed section of air cavity 5 is formed between the piston structure 4 and the sensing end of the sensing element 32. The contact surface of the piston structure 4 and the pin 21 is made of elastic materials. The sensing element 32 is a pneumatic sensor, and the combination degree of the solid elastic medium and the sensor is different from the combination degree of the air and the sensor, so that the piston with the elastic contact surface is contacted with the pin to play a buffering role, the piston is pushed to move to compress the air after the contact so as to raise the air pressure, the air pressure sensor senses the pressure change, and the final stable pressure value is obtained as a measured value for comparison with a preset value. And the elastic material of the contact surface adopts a high-elastic material, and the compression amount of the elastic material is within the allowable error range of measurement after the elastic material is relatively stable, so that the influence on the measurement result is small.
Embodiment III:
the reference limiting structure 1 comprises limiting sliding grooves 11 for limiting the pin assemblies 2 on two sides, and the pin assemblies 2 are attached to the groove walls on two sides of the limiting sliding grooves 11 in a sliding manner; the pin assembly further comprises a lateral clamping plate 12 which is perpendicular to the length direction of the limiting chute 11 and far away from or close to the limiting chute 11, and is used for limiting the sliding of the pin assembly 2 relative to the limiting chute 11. The limiting sliding groove and the lateral clamping plate are used for completely limiting the horizontal plane freedom degree of the pin assembly, so that random sliding of the pin assembly in the measuring process is avoided, and pins can be stably inserted into the measuring holes.
The limiting sliding groove also plays a role in conveying and guiding, as shown in fig. 2, the lateral clamping plates are distributed in an equidistant arrangement along the length direction of the limiting sliding groove, so that one of the lateral clamping plates corresponds to the position of the measuring module, the lateral clamping plates synchronously move in a stepping manner at unit intervals along the length direction of the limiting sliding groove, and the pin assembly can be accurately positioned in conveying among multiple stations.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (6)
1. The utility model provides a flexible contact response's pin length measurement device which characterized in that: the pin assembly comprises a reference limiting structure (1) and a pin assembly (2) to be detected, wherein the reference limiting structure is used for limiting the pin assembly to be detected; a measuring module (3) is arranged corresponding to a pin (21) of the pin assembly (2), and the measuring module (3) is close to or far away from the pin (21) along the length direction of the pin (21); one end, close to the pin (21), of the measurement module (3) is a measurement end, a measurement hole (31) for the pin (21) to be inserted is formed in the measurement end, and the measurement hole (31) is used for sensing the length of the pin (21) inserted into the hole; an induction element (32) is fixedly arranged at the inner end of the measuring hole (31), and the induction element (32) is in flexible contact with the end part of the pin (21).
2. A flexible contact sensing pin length measuring device according to claim 1, wherein: the sensing end of the sensing element (32) indirectly contacts the end of the pin (21) through an elastic medium.
3. A flexible contact sensing pin length measuring device according to claim 2, wherein: the sensing element (32) is a pressure sensor.
4. A flexible touch sensitive pin length measuring device according to claim 3, wherein: the part of the elastic medium, which is in contact with the pin (21), is a piston structure (4), the piston structure (4) is in axial sliding fit with the measuring hole (31), and a closed section of air cavity (5) is formed between the piston structure (4) and the sensing end of the sensing element (32).
5. The flexible touch sensitive pin length measuring device of claim 4, wherein: the contact surface of the piston structure (4) and the pin (21) is made of elastic materials.
6. A flexible contact sensing pin length measuring device according to claim 1, wherein: the reference limiting structure (1) comprises limiting sliding grooves (11) for limiting the pin assemblies (2) at two sides, and the pin assemblies (2) are attached to the groove walls at two sides of the limiting sliding grooves (11) in a sliding mode; the pin assembly is characterized by further comprising a lateral clamping plate (12) which is perpendicular to the length direction of the limiting chute (11) and far away from or close to the limiting chute (11) and is used for limiting the pin assembly (2) to slide relative to the limiting chute (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322556178.1U CN220772158U (en) | 2023-09-20 | 2023-09-20 | Flexible contact induction pin length measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322556178.1U CN220772158U (en) | 2023-09-20 | 2023-09-20 | Flexible contact induction pin length measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220772158U true CN220772158U (en) | 2024-04-12 |
Family
ID=90599979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322556178.1U Active CN220772158U (en) | 2023-09-20 | 2023-09-20 | Flexible contact induction pin length measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220772158U (en) |
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2023
- 2023-09-20 CN CN202322556178.1U patent/CN220772158U/en active Active
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