CN113945348A - Thermal interface material vibration testing device - Google Patents
Thermal interface material vibration testing device Download PDFInfo
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- CN113945348A CN113945348A CN202111188651.4A CN202111188651A CN113945348A CN 113945348 A CN113945348 A CN 113945348A CN 202111188651 A CN202111188651 A CN 202111188651A CN 113945348 A CN113945348 A CN 113945348A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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Abstract
The invention discloses a thermal interface material vibration testing device, which comprises a supporting seat, a first moving part, a second moving part, a third moving part and a fixing part, wherein the supporting seat provides support for the thermal interface material vibration testing device, the first moving part is used for driving the first moving part to reciprocate along the length direction of a guide rod by a first driving mechanism, the second moving part is driven by a second driving mechanism to reciprocate along a first direction, the third moving part is driven by a third driving mechanism to reciprocate along a second direction, the second direction is vertical to the first direction and the reciprocating direction of the guide rod, and the fixing part is used for fixing a tested sample. And finding out the deficiency of the thermal interface material according to the test result, and then carrying out optimization design on the thermal interface material.
Description
Technical Field
The invention relates to a vibration testing device, in particular to a thermal interface material vibration testing device.
Background
With the development of new technology, new products with 'high heat flux density, high power, high stability, thermal response and ultra-thin' put higher demands on thermal interface materials, the thermal interface materials can solve the heat dissipation problem of electronic equipment, are used between a heating source and a contact interface of a radiator, and improve the heat dissipation efficiency of electronic components by using the thermal interface materials with the thermal conductivity far higher than that of air.
With the iterative update of electronic devices, 5G communication, new energy and photovoltaic modules, increasingly severe application environments put higher demands on thermal interface materials, and excellent reliability is required on the basis of high thermal conductivity, wherein the anti-vibration capability is an important parameter for measuring the quality of the thermal interface materials. In the production, assembly, transportation and use processes of electronic devices, 5G base stations, new energy vehicles and photoelectric modules, multi-direction, multi-frequency and multi-amplitude vibration exists, and consumer electronics also involve instantaneous vibration such as falling impact in daily use; in the bonding type heat dissipation mode, the radiator cannot be fixed or completely fixed by using a mechanical structure, so that the thermal interface material is required to have good bonding performance, and the requirement on the anti-vibration capability of the thermal interface material is further improved. The thermal interface material fills between the heat generating component and the heat sink once the thermal interface material cracks, expands, displaces, or completely falls off under vibration conditions. The problems of rapid reduction of heat dissipation performance, looseness of devices and the like can be caused, and meanwhile, the sliding thermal interface material can pollute the electronic devices and even damage the functions of the electronic devices, so that irreversible damage is caused. Vibration testing of the thermal interface material is crucial to guarantee long-term service reliability.
In the process of implementing the embodiments of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems:
at present, equipment for vibration testing of thermal interface materials is lack, the selection of vibration direction, amplitude and direction is single, and quantitative testing cannot be simply and comprehensively carried out.
Disclosure of Invention
The invention provides a thermal interface material vibration testing device, which is used for solving the problems that the thermal interface material vibration testing device is lack and the quantitative test cannot be simply carried out.
According to an aspect of the present invention, there is provided a thermal interface material vibration testing apparatus, including:
the supporting seat is arranged at the lowest part of the thermal interface material vibration testing device and used for supporting the thermal interface material vibration testing device;
the first moving part is arranged at the upper part of the supporting seat, at least two guide rods and a first driving mechanism are arranged between the first moving part and the supporting seat, one end of each guide rod is fixedly arranged on the first moving part or the supporting seat, the other end of each guide rod is in sliding fit with the other one of the first moving part or the supporting seat, and the first driving mechanism is used for driving the first moving part to reciprocate along the length direction of the guide rods;
the second moving part is arranged at the upper part of the first moving part, and a second driving mechanism is arranged between the second moving part and the first moving part and is used for driving the second moving part to reciprocate on the first moving part along a first direction which is vertical to the reciprocating direction of the guide rod;
the third moving part is arranged at the upper part of the second moving part, a third driving mechanism is arranged between the third moving part and the second moving part and is used for driving the third moving part to reciprocate on the second moving part along a second direction, and the second direction is vertical to the first direction and the reciprocating direction of the guide rod;
and the fixing piece is arranged at the upper part of the third moving piece and is used for fixing the sample to be tested.
Further, the first drive mechanism includes:
the driving motor is fixed on the supporting seat and used for providing power;
and one end of the connecting rod mechanism is fixedly connected with the driving motor, the other end of the connecting rod mechanism is fixedly connected with the first moving part, and the connecting rod mechanism is used for converting the rotation of the driving motor into axial motion and pushing the first moving part to do reciprocating motion along the guide rod.
Furthermore, a first stroke limiter and a first driving turntable are arranged between the second moving part and the first moving part, the first driving turntable is rotatably arranged on the first moving part, the first stroke limiter is fixedly arranged on the first driving turntable, the first stroke limiter is in rolling fit with the second moving part, the first driving turntable provides power for the reciprocating motion of the second moving part, and the first stroke limiter is used for controlling the length of the stroke of the second moving part in the reciprocating motion.
Further, a first guide rail is arranged between the second moving member and the first moving member, and the second moving member reciprocates in the first direction along the first guide rail.
Furthermore, a second stroke limiter and a second driving turntable are arranged between the third moving part and the second moving part, the second driving turntable is rotatably arranged on the second moving part, the second stroke limiter is fixedly arranged on the second driving turntable, the second stroke limiter is in rolling fit with the third moving part, the second driving turntable provides power for the reciprocating motion of the third moving part, and the second stroke limiter is used for controlling the length of the stroke of the third moving part in the reciprocating motion.
Further, a second guide rail is arranged between the third moving member and the second moving member, and the third moving member reciprocates in the second direction along the second guide rail.
Furthermore, the bottom of the supporting seat is provided with a damping material
Furthermore, a connecting piece is arranged between the fixing piece and the third moving piece, one end of the connecting piece is fixedly connected with the third moving piece, the other end of the connecting piece is adjustably connected with the fixing piece, and the connecting piece is used for adjusting the angle of the fixing piece.
Further, the connector includes:
at least one pair of angle adjusting plates are fixedly arranged on the third moving piece, adjusting grooves are arranged on the angle adjusting plates and are used for adjusting the angles of the fixing pieces,
and the angle fixing screw is used for fixing the angle after the fixing piece is adjusted to a proper angle.
And the fastening screw is used for firmly fixing the fixing piece and preventing the fixing piece from shaking in motion.
The invention has the beneficial effects that:
the thermal interface material vibration testing device provided by the invention has the advantages that the three directions of movement are set, namely the reciprocating movement in the guide rod direction, the reciprocating movement in the first direction and the reciprocating movement in the second direction, the three movement directions are mutually vertical, when the three movement directions move simultaneously, the vibration scene of the thermal interface material in the transportation and use process is simulated to the maximum extent, so that the shock resistance of the thermal interface material can be tested through experiments, the defect of the thermal interface material is found out according to the test result, then the thermal interface material is optimally designed, and the equipment stability and the performance stability in application of the thermal interface material in the transportation process are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a first and second moving member in accordance with an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a second and third moving element in accordance with an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a third movable member and a stationary member engaged with each other according to an embodiment of the present invention;
in the figure: 10-a support seat; 11-a guide bar; 12-a linkage mechanism; 20-a first moving part; 21-a first drive turntable; 22-a first guide rail; 30-a second moving part; 31-a second drive turntable; 32-a second guide rail; 33-a second travel stop; 40-a third motion member; 41-angle adjusting plate; 42-angle set screw; 43-a fastening screw; 50-fixing part.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
In order to solve the problems that equipment for vibration testing of a thermal interface material in the prior art is relatively lack and quantitative testing cannot be simply and easily performed, the invention provides a thermal interface material vibration testing device, and the specific scheme is as follows.
Referring to fig. 1, a thermal interface material vibration testing apparatus includes a supporting base 10, a first moving member 20, a second moving member 30, a third moving member 40, and a fixing member.
The support seat 10 is disposed at the lowest portion of the thermal interface material vibration testing device and used for supporting the thermal interface material vibration testing device, and the support seat 10 has a sufficient height so that the guide rod 11 cannot be separated from the support seat 10 during the movement process.
The first moving part 20 is arranged at the upper part of the supporting seat 10, at least two guide rods 11 and a first driving mechanism, preferably four guide rods 11, are arranged between the first moving part 20 and the supporting seat 10, one end of each guide rod 11 is fixedly arranged on the first moving part 20 or the supporting seat 10, the other end of each guide rod 11 is in sliding fit with the other one of the first moving part 20 or the supporting seat 10, preferably, one end of each guide rod 11 is fixedly arranged on the first moving part 20, the other end of each guide rod 11 is in sliding fit with the supporting seat 10, and the first driving mechanism is used for driving the first moving part 20 to reciprocate along the length direction of each guide rod 11;
a second moving member 30, the second moving member 30 being disposed at an upper portion of the first moving member 20, a second driving mechanism being disposed between the second moving member 30 and the first moving member 20, the second driving mechanism being configured to drive the second moving member 30 to reciprocate on the first moving member 20 along a first direction, the first direction being perpendicular to a reciprocating direction of the guide bar 11;
a third moving part 40, the third moving part 40 being disposed at the upper portion of the second moving part 30, a third driving mechanism being disposed between the third moving part 40 and the second moving part 30, the third driving mechanism being configured to drive the third moving part 40 to reciprocate on the second moving part 30 along a second direction, the second direction being perpendicular to both the first direction and the reciprocating direction of the guide rod 11;
and a fixing member provided at an upper portion of the third moving member 40 for fixing a sample to be tested.
The thermal interface material vibration testing device of this embodiment is through setting for the removal of three direction, 11 direction reciprocating motion of guide arms promptly, the reciprocating motion of first direction and the reciprocating motion of second direction, these three direction of motion mutually perpendicular, when these three direction of motion simultaneous movement, furthest's simulation thermal interface material transportation and the scene of use vibration, therefore can test thermal interface material shock resistance through the experiment, find out the not enough of thermal interface material according to the test result, then carry out optimal design to thermal interface material, the stability of the equipment and the stability of performance when using of thermal interface material when the transportation.
Further, the first drive mechanism includes a drive motor and a link mechanism 12
The driving motor is fixed on the supporting seat 10 and used for providing power, a rotating shaft of the driving motor can be fixed with a rotating disc, one point outside the center of the rotating disc is fixedly connected with one end of the connecting rod mechanism 12, the other end of the rotating disc is fixedly connected with the first moving part 20, and the connecting rod mechanism 12 is used for converting the rotation of the driving motor into axial motion and pushing the first moving part 20 to reciprocate along the guide rod 11.
There is enough space between the first moving member 20 and the supporting seat 10, and the link mechanism 12 does not interfere with the first moving member 20 and the supporting seat 10 during the process of driving the first moving member 20 to reciprocate.
Further, the first driving mechanism may also be a reciprocating cylinder or oil cylinder, as long as the first moving member 20 can reciprocate.
Further, as shown in fig. 2, a first stroke limiter and a first driving turntable 21 are disposed between the second moving member 30 and the first moving member 20, the first driving turntable 21 is rotatably disposed on the first moving member 20, the first stroke limiter is fixedly disposed on the first driving turntable 21, the first stroke limiter is in rolling fit with the second moving member 30, the first driving turntable 21 provides power for the reciprocating motion of the second moving member 30, and the first stroke limiter is used for controlling the length of the stroke of the reciprocating motion of the second moving member 30.
The position of the first stroke limiter can be adjusted, and if the second moving member 30 is desired to move a large distance, the first stroke limiter can be adjusted outward, and if the second moving member 30 is desired to move a small distance, the first stroke limiter can be adjusted inward.
The first driving turntable 21 is preferably circular, preferably, the first driving turntable 21 is driven by a motor, and when the first driving turntable 21 is driven by the motor to make a circular motion, the first driving turntable 21 drives the first stroke limiter to make a circular motion, and the first stroke limiter rolls in the groove matched with the second moving part 30 to push the second moving part 30 to make a reciprocating motion in the first direction.
The mode of adopting first drive carousel 21 and first stroke limiter, simple structure, it is with low costs.
Further, a first guide rail 22 is provided between the second moving member 30 and the first moving member 20, and the second moving member 30 reciprocates in the first direction along the first guide rail 22.
The guide rail can be adopted to ensure that the second moving part 30 moves accurately, thereby effectively reducing the accident rate of the device in the operation process and improving the working efficiency of the device.
Further, a cylinder can be arranged between the second moving part 30 and the first moving part 20, the cylinder body of the cylinder is fixed on the first moving part 20, the moving part of the cylinder is fixedly connected with the second moving part 30, the shaft of the cylinder extends out and contracts to push the second moving part 30 to reciprocate, two one-way cylinders can also be arranged, the moving directions of the two cylinders are opposite, when the shaft of one cylinder extends out, the shaft of the other cylinder contracts, the two cylinders push the second moving part 30 to reciprocate together, and the coordinated motion of the two cylinders can be coordinated through a PLC (programmable logic controller). Of course, there are many ways to control the second moving element 30 to reciprocate, for example, the second moving element 30 is provided with a magnetic object, two ends of the first moving element 20 are provided with electromagnets, the magnetic object drives the second moving element 30 to move on the guide rail, when the second moving element 30 moves to one end of one of the electromagnets, the electromagnet is energized to generate magnetism, the second moving element 30 is pushed to the other end to move, when the second moving element 30 moves to the other end, the electromagnet at the one end is de-energized, the electromagnet at the other end is energized, and the second moving element 30 is pushed back, so that the reciprocating motion of the second moving element 30 is realized repeatedly.
Further, as shown in fig. 3, a second stroke limiter 33 and a second driving turntable 31 are disposed between the third moving member 40 and the second moving member 30, the second driving turntable 31 is rotatably disposed on the second moving member 30, the second stroke limiter 33 is fixedly disposed on the second driving turntable 31, the second stroke limiter 33 is in rolling fit with the third moving member 40, the second driving turntable 31 provides power for the reciprocating motion of the third moving member 40, and the second stroke limiter 33 is used for controlling the length of the stroke of the reciprocating motion of the third moving member 40.
The second driving turntable 31 is preferably circular, and preferably, the second driving turntable 31 is driven by a motor, when the second driving turntable 31 is driven by the motor to make a circular motion, the second driving turntable 31 drives the second stroke limiter 33 to make a circular motion, and the second stroke limiter 33 rolls in a groove matched with the third moving element 40 to push the third moving element 40 to make a reciprocating motion in the second direction.
The mode of adopting second drive carousel 31 and second stroke stopper 33, simple structure, it is with low costs.
Further, a second guide rail 32 is provided between the third moving member 40 and the second moving member 30, and the third moving member 40 reciprocates in the second direction along the second guide rail 32.
The guide rail can be adopted to ensure that the third moving part 40 moves accurately, thereby effectively reducing the accident rate of the device in the operation process and improving the working efficiency of the device.
Further, an air cylinder can be arranged between the third moving part 40 and the second moving part 30, the cylinder body of the air cylinder is fixed on the second moving part 30, the moving part of the air cylinder is fixedly connected with the third moving part 40, the shaft of the air cylinder extends out and contracts to push the third moving part 40 to reciprocate, two one-way air cylinders can also be arranged, the moving directions of the two air cylinders are opposite, when the shaft of one air cylinder extends out, the shaft of the other air cylinder contracts, the two air cylinders push the third moving part 40 to reciprocate together, and the cooperative motion of the two air cylinders can be coordinated through a PLC (programmable logic controller). Of course, there are many ways to control the reciprocating motion of the third moving member 40, for example, a magnetic object is disposed on the third moving member 40, electromagnets are disposed at two ends of the second moving member 30, the magnetic object drives the third moving member 40 to move on the guide rail, when the third moving member 40 moves to one end of one of the electromagnets, the electromagnet is energized to generate magnetism, the third moving member 40 is moved to the other end, when the third moving member 40 moves to the other end, the electromagnet at the one end is de-energized, the electromagnet at the other end is energized, and the third moving member 40 is pushed back, so that the reciprocating motion of the third moving member 40 is realized repeatedly.
Further, supporting seat 10 bottom is equipped with shock-absorbing material, and this device all has the motion in three direction for vibrating device, and the device can vibrate with the installation base face, produces the noise, also can influence the device simultaneously, reduces the life of device, therefore supporting seat 10 bottom is equipped with shock-absorbing material can effectually avoid above problem.
Further, as shown in fig. 4, a connecting member is disposed between the fixing member and the third moving member 40, one end of the connecting member is fixedly connected to the third moving member 40, the other end of the connecting member is adjustably connected to the fixing member, and the connecting member is used for adjusting the angle of the fixing member.
Further, the connector includes:
the angle adjusting plate 41, the third moving member 40 is fixedly provided with at least one pair of angle adjusting plates 41, the angle adjusting plates 41 are provided with adjusting grooves for adjusting the angle of the fixing member,
and an angle fixing screw 42 for fixing the angle after the fixing member is adjusted to a proper angle.
And a fastening screw 43 for fixing the fixing member to prevent the fixing member from shaking during movement.
The angle of the fixing piece is adjusted by adopting the connecting piece, so that the vibration test of the thermal interface material can be simulated under the condition of different angles,
the test range is expanded, and various use scenes of the thermal interface material can be simulated more accurately.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A thermal interface material vibration testing apparatus, comprising:
the supporting seat is arranged at the lowest part of the thermal interface material vibration testing device and used for supporting the thermal interface material vibration testing device;
the first moving part is arranged at the upper part of the supporting seat, at least two guide rods and a first driving mechanism are arranged between the first moving part and the supporting seat, one end of each guide rod is fixedly arranged on the first moving part or the supporting seat, the other end of each guide rod is in sliding fit with the other one of the first moving part or the supporting seat, and the first driving mechanism is used for driving the first moving part to reciprocate along the length direction of the guide rods;
the second moving part is arranged at the upper part of the first moving part, and a second driving mechanism is arranged between the second moving part and the first moving part and is used for driving the second moving part to reciprocate on the first moving part along a first direction which is vertical to the reciprocating direction of the guide rod;
the third moving part is arranged at the upper part of the second moving part, a third driving mechanism is arranged between the third moving part and the second moving part and is used for driving the third moving part to reciprocate on the second moving part along a second direction, and the second direction is vertical to the first direction and the reciprocating direction of the guide rod;
and the fixing piece is arranged at the upper part of the third moving piece and is used for fixing a sample to be tested.
2. The thermal interface material vibration testing apparatus of claim 1, wherein the first drive mechanism comprises:
the driving motor is fixed on the supporting seat and used for providing power;
and one end of the connecting rod mechanism is fixedly connected with the driving motor, the other end of the connecting rod mechanism is fixedly connected with the first moving part, and the connecting rod mechanism is used for converting the rotation of the driving motor into axial motion and pushing the first moving part to do reciprocating motion along the guide rod.
3. The thermal interface material vibration testing device of claim 1, wherein a first stroke limiter and a first driving turntable are disposed between the second moving member and the first moving member, the first driving turntable is rotatably disposed on the first moving member, the first stroke limiter is fixedly disposed on the first driving turntable, the first stroke limiter is in rolling fit with the second moving member, the first driving turntable provides power for the reciprocating motion of the second moving member, and the first stroke limiter is used for controlling the length of the stroke of the reciprocating motion of the second moving member.
4. The thermal interface material vibration testing apparatus of claim 3, wherein a first guide rail is provided between the second mover and the first mover, and the second mover reciprocates in a first direction along the first guide rail.
5. The thermal interface material vibration testing device of claim 1, wherein a second stroke limiter and a second driving turntable are disposed between the third moving member and the second moving member, the second driving turntable is rotatably disposed on the second moving member, the second stroke limiter is fixedly disposed on the second driving turntable, the second stroke limiter is in rolling fit with the third moving member, the second driving turntable provides power for the reciprocating motion of the third moving member, and the second stroke limiter is used for controlling the length of the stroke of the reciprocating motion of the third moving member.
6. The thermal interface material vibration testing apparatus of claim 5, wherein a second guide rail is provided between the third mover and the second mover, and the third mover reciprocates in a second direction along the second guide rail.
7. The apparatus of claim 1, wherein the bottom of the supporting base is provided with a shock absorbing material.
8. The thermal interface material vibration testing device of any one of claims 1 to 7, wherein a connecting member is disposed between the fixing member and the third moving member, one end of the connecting member is fixedly connected to the third moving member, the other end of the connecting member is adjustably connected to the fixing member, and the connecting member is used for adjusting the angle of the fixing member.
9. The thermal interface material vibration testing apparatus of claim 8, wherein the connector comprises:
the third moving piece is fixedly provided with at least one pair of angle adjusting plates, each angle adjusting plate is provided with an adjusting groove, each adjusting groove is used for adjusting the angle of the fixing piece,
and the angle fixing screw is used for fixing the angle after the fixing piece is adjusted to a proper angle.
And the fastening screw is used for firmly fixing the fixing piece and preventing the fixing piece from shaking in motion.
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| CN202111188651.4A CN113945348A (en) | 2021-10-12 | 2021-10-12 | Thermal interface material vibration testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414472A (en) * | 2022-03-29 | 2022-04-29 | 合烯电子科技(江苏)有限公司 | Detection apparatus for thermal interface material |
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