Laser chip aging clamp

Abstract

The utility model provides a laser chip aging clamp, and relates to the technical field of laser testing. Comprising a base, a sliding rail stand column, a limiting assembly, a needle pressing platform and a probe, the sliding rail stand column is arranged on the base, and the position of the sliding rail stand column can be adjusted in the width direction of the base; the limiting assembly is arranged on the base, the position of the limiting assembly can be adjusted in the length direction of the base, and the limiting assembly is used for limiting a heat sink bearing a laser chip; the probe pressing platform is arranged on the sliding rail stand column, the position of the probe pressing platform can be adjusted in the length direction of the base, and the probe pressing platform is used for bearing probes; and the probe is arranged on the probe pressing platform and is used for being in conductive contact with the laser chip on the heat sink. The positions of the sliding rail stand columns bearing the probe pressing platform can be adjusted in the width direction of the base, and the positions of the limiting assembly and the probe pressing platform can be adjusted in the length direction of the base, so that heat sinks of different sizes are limited, the positions of the probes are adjusted, and the probes can make conductive contact with laser chips on the heat sinks of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of laser testing, in particular to an aging fixture for a laser chip. Background Art

[0002] Laser chip aging test is an electrical stress test method that uses voltage and high temperature to accelerate the electrical failure of the device. This test method basically simulates the operation of the chip throughout its life. The electrical excitation applied during the aging process reflects the worst-case operation of the chip. Therefore, the aging test of the laser chip is a very important step in laser manufacturing. In this step, an aging fixture is required to process and fix the laser chip. The aging fixture for laser chips is usually composed of a heat sink plate and a large probe plate placed on the heat sink plate. The heat sink plate is used to place the laser chip, and the probe plate is used to make electrical contact with the laser chip. The heat sink plate and the probe plate are separated. When working, a fixture is used to position and clamp the heat sink plate under the probe plate.

[0003] A Chinese patent document with authorization announcement number CN208391878U discloses a simplified laser chip positioning fixture, including a heat sink plate, a supporting plate, a rotating rod and a printed circuit board. A plurality of bases are provided on one side of the top of the heat sink plate, and an oblique rod groove is provided on the other side. A plurality of inner sides of the plurality of bases are respectively located on one side of the supporting plate. The rotating rod includes an external rotating handle portion exposed on the heat sink plate and an internal telescopic rod portion installed in the rod groove. A plurality of probe groups corresponding to the respective bases are arranged side by side at the bottom of the printed circuit board.

[0004] For example, in the positioning fixture in the above technical solution, the probe spacing and position cannot be changed, and the limiting accessories need to be replaced to adapt to different heat sink sizes. Moreover, it can only be applied to products with similar heat sink sizes, and its applicability is limited. Utility Model Content

[0005] In view of this, the utility model proposes a laser chip aging fixture, which can adaptively adjust the position of accessories according to different heat sink sizes.

[0006] The technical solution of the utility model is implemented as follows: The utility model provides a laser chip aging fixture, which includes a base, a slide rail column, a limit assembly, a pressure needle platform and a probe, wherein:

[0007] The slide rail column is arranged on the base, and the position of the slide rail column is adjustable along the width direction of the base;

[0008] The limiting component is arranged on the base, and the position of the limiting component along the length direction of the base can be adjusted, and is used to limit the heat sink carrying the laser chip;

[0009] The needle pressing platform is arranged on the slide rail column and is used to carry the probe;

[0010] The probe is arranged on the needle pressing platform, and the position of the probe is adjustable along the length direction of the base, and is used for conducting contact with the laser chip on the heat sink.

[0011] On the basis of the above technical solution, preferably, the base is provided with a column guide groove, and the slide rail column includes a mounting block and a column body, wherein:

[0012] The column body is vertically arranged on the base;

[0013] The length direction of the column guide groove is consistent with the width direction of the base;

[0014] The mounting block is connected to one side of the lower end of the column body, and the mounting block can move in the column guide groove along the length direction thereof, and can be relatively fixed or released selectively.

[0015] On the basis of the above technical solution, preferably, the slide rail column further includes a slide table and a manual clamp, wherein:

[0016] The slide is arranged on the column body, and is used to clamp and support the needle pressing platform, and make it move in a direction perpendicular to the base;

[0017] The manual clamp is arranged on the column body and is fixedly connected to the slide table for positioning the slide table.

[0018] On the basis of the above technical solution, preferably, the limiting assembly includes a clamping plate, a first adjusting screw and a limiting block, and the base is provided with a first guide groove and a limiting strip, wherein:

[0019] The clamping plate is arranged on the first guide groove;

[0020] The first adjusting screw is disposed at the end of the clamping plate, and is used to push and pull the clamping plate to move on the first guide groove, so as to adjust the position of the clamping plate along the length direction of the base;

[0021] The limit stopper is fixed on the clamping plate;

[0022] The clamping plate, the limiting block and the limiting strip together form a limiting groove for limiting the heat sink.

[0023] On the basis of the above technical solution, preferably, the clamp plate is provided with a first mounting hole, the base is provided with a first screw hole, the aperture of the first mounting hole is larger than the first screw hole, and the clamp plate and the base are fixedly connected by bolt fasteners passing through the first mounting hole and the first screw hole.

[0024] On the basis of the above technical solution, preferably, the needle pressing platform includes a support plate, a probe frame, a second adjusting screw and a second guide groove, wherein:

[0025] The second guide groove is arranged on the support plate;

[0026] The probe holder is arranged on the second guide groove and is used for clamping and fixing the probe;

[0027] The second adjusting screw is disposed at the end of the probe frame, and is used to push and pull the probe frame to move on the second guide groove, so as to adjust the position of the probe frame along the length direction of the base.

[0028] On the basis of the above technical solution, preferably, the pressing needle platform further includes a pressing needle guide groove and a pressing needle fixing block, wherein:

[0029] The pressure needle guide groove is arranged on the support plate, and its length direction is consistent with the length direction of the base;

[0030] The pressure needle fixing block can move in the pressure needle guide groove along the length direction thereof, and can be selectively relatively fixed or released to clamp and fix the probe.

[0031] On the basis of the above technical solution, preferably, a second mounting hole is provided on the probe frame, a second screw hole is provided on the support plate, the aperture of the second mounting hole is larger than the second screw hole, and the probe frame and the support plate are fixedly connected by bolt fasteners passing through the second mounting hole and the second screw hole.

[0032] On the basis of the above technical solution, preferably, the slide rail column further includes a third adjusting screw, and the third adjusting screw is arranged at the end of the mounting block, and is used to push and pull the mounting block to move in the column guide groove.

[0033] On the basis of the above technical solution, preferably, it also includes a cooling water pipeline, which is U-shaped, arranged inside the base and below the limit bar.

[0034] The laser chip aging fixture of the utility model has the following beneficial effects compared with the prior art:

[0035] (1) By setting a slide rail column whose position can be adjusted along the width direction of the base, and setting the needle pressing platform on the slide rail column, the needle pressing platform can be adjusted in the width direction of the base; by setting a limiter component and a needle pressing platform whose position can be adjusted along the length direction of the base, the limiter component can limit the position of heat sinks of different sizes, and the needle pressing platform can make corresponding adjustments, so that the probe can be in conductive contact with the laser chips on the heat sinks of different sizes;

[0036] (2) A slide rail column including a column body, a slide and a manual clamp is set, and the needle pressing platform is clamped and fixed on the slide. The needle pressing platform is driven by the slide to move in a direction perpendicular to the base, and is positioned by the manual clamp, so that the height of the needle pressing platform relative to the base can be adjusted to facilitate the loading and unloading of the heat sink. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A three-dimensional diagram of the laser chip aging fixture of the utility model;

[0039] Figure 2 This is the front view of the laser chip aging fixture of the utility model:

[0040] Figure 3 It is a three-dimensional diagram of the base and the limiting assembly of the utility model;

[0041] Figure 4 It is an exploded view of the base and the limit assembly of the utility model;

[0042] Figure 5 It is a three-dimensional diagram of the needle pressing platform of the utility model;

[0043] Figure 6 This is an exploded view of the needle pressing platform of the utility model;

[0044] Figure 7 It is a side view of the slide rail column of the utility model;

[0045] Figure 8 It is a three-dimensional diagram of the slide rail column of the utility model;

[0046] 1. Base; 11. Column guide groove; 12. First guide groove; 13. Limiting strip; 14. First screw hole; 2. Slide rail column; 21. Mounting block; 22. Column body; 23. Slide table; 24. Manual clamp; 25. Third adjusting screw; 3. Limiting assembly; 31. Clamp; 311. First mounting hole; 32. First adjusting screw; 33. Limiting block; 4. Press needle platform; 41. Support plate; 411. Second guide groove; 412. Press needle guide groove; 413. Second screw hole; 42. Probe holder; 421. Second mounting hole; 43. Second adjusting screw; 44. Press needle fixing block; 5. Probe; 6. Cooling water pipeline. DETAILED DESCRIPTION

[0047] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] like Figure 1-8 As shown, a laser chip aging fixture of the utility model includes a base 1, a slide rail column 2, a limit assembly 3, a pressure needle platform 4 and a probe 5, wherein the slide rail column 2 is arranged on the base 1, and its position can be adjusted along the width direction of the base 1; the limit assembly 3 is arranged on the base 1, and its position can be adjusted along the length direction of the base 1, and is used to limit the heat sink carrying the laser chip; the pressure needle platform 4 is arranged on the slide rail column 2, and is used to carry the probe 5; the probe 5 is arranged on the pressure needle platform 4, and its position can be adjusted along the length direction of the base 1, and is used to make conductive contact with the laser chip on the heat sink.

[0049] As in the above structure, when the size of the laser chip changes and the heat sink carrying the laser chip changes accordingly, the position of the limiting component 3 is first adjusted along the length direction of the base 1 to adapt it to the new size of the heat sink and limit it, and then the position of the slide rail column 2 can be adjusted along the width direction of the base 1 to move the needle pressing platform 4 to a suitable position, and finally the position of the probe 5 is adjusted along the length direction of the base 1 to make the probe 5 conductively contact with the laser chip on the new size heat sink.

[0050] As a preferred embodiment, a column guide groove 11 is provided on the base 1, and the slide rail column 2 includes a mounting block 21 and a column body 22, wherein the column body 22 is vertically arranged on the base 1; the length direction of the column guide groove 11 is consistent with the width direction of the base 1; the mounting block 21 is connected to one side of the lower end of the column body 22, and the mounting block 21 can move along the length direction of the column guide groove 11, and can be selectively relatively fixed or released.

[0051] As in the above structure, there is a mounting through hole on the mounting block 21, and the mounting block 21 and the column guide groove 11 are fixedly connected by bolt fasteners passing through the mounting through hole. When the position of the slide rail column 2 can be adjusted along the width direction of the base 1, the mounting block 21 and the column guide groove 11 are released, and then the mounting block 21 is moved to a suitable position, and then the mounting block 21 is fixedly connected to the column guide groove 11 by bolt fasteners passing through the mounting through hole, so that the slide rail column 2 is adjusted to a suitable position to adapt to the new heat sink size.

[0052] As a preferred embodiment, Figure 7-8 As shown, the slide rail column 2 also includes a slide 23 and a manual clamp 24, wherein the slide 23 is arranged on the column body 22, and is used to clamp and support the needle pressing platform 4 and enable it to move in a direction perpendicular to the base 1; the manual clamp 24 is arranged on the column body 22 and is fixedly connected to the slide 23, and is used to position the slide 23.

[0053] As shown in the above structure, the slide 23 is arranged at the lower end of the column body 22, including a slide rail with one end arranged perpendicular to the base 1 and a slider arranged on the slide rail. The slider is C-shaped, and the C-shaped slider fixes and clamps the needle pressing platform 4, and is used to drive the needle pressing platform 4 to move along the slide rail. The manual clamp 24 is arranged at the upper end of the column body 22 and is connected to the C-shaped slider through a connecting rod. The manual clamp 24 also includes a handle. When it is necessary to place or take the heat sink under the needle pressing platform 4, the handle is lifted to move the C-shaped slider upward along the slide rail, and then the handle is pressed to position it, so that the position of the needle pressing platform 4 is raised, and the operating space in the height direction of the needle pressing platform 4 and the base 1 becomes larger, thereby facilitating the loading and unloading of the heat sink. After replacing the heat sink, the handle is released to move the C-shaped slider downward along the slide rail, so that the needle pressing platform 4 is close to the heat sink, so that the probe 5 contacts the laser chip on the heat sink.

[0054] As a preferred embodiment, Figure 3-4As shown, the limiting assembly 3 includes a clamping plate 31, a first adjusting screw 32 and a limiting block 33, and the base 1 is provided with a first guide groove 12 and a limiting strip 13, wherein the clamping plate 31 is arranged on the first guide groove 12; the first adjusting screw 32 is arranged at the end of the clamping plate 31, and is used to push and pull the clamping plate 31 to move on the first guide groove 12, so as to realize the position adjustment of the clamping plate 31 along the length direction of the base 1; the limiting block 33 is fixed on the clamping plate 31; the clamping plate 31, the limiting block 33 and the limiting strip 13 together constitute a limiting groove, which is used to limit the heat sink.

[0055] As shown in the above structure, the first guide groove 12 is arranged along the length direction of the base 1, and a raised clamping strip is provided at the bottom of the splint 31. The splint 31 is clamped into the first guide groove 12 through the clamping strip. The first adjusting screw 32 is arranged at the end of the splint 31. By rotating the first adjusting screw 32 and pushing or dragging the splint 31, the splint 31 can be moved linearly on the first guide groove 12, so that the limit block 33 fixed on the splint 31 is moved to a suitable position. The splint 31, the limit block 33 and the limit strip 13 together constitute a limit groove with an opening at one end. The splint 31 blocks and limits one end of the heat sink, and the limit block 33 and the limit strip 13 block and limit the two sides of the heat sink.

[0056] As a preferred embodiment, a first mounting hole 311 is provided on the clamp plate 31, and a first screw hole 14 is provided on the base 1. The aperture of the first mounting hole 311 is larger than that of the first screw hole 14. The clamp plate 31 and the base 1 are fixedly connected by bolt fasteners passing through the first mounting hole 311 and the first screw hole 14.

[0057] As in the above structure, when a heat sink of a new size is replaced and the position of the clamp 31 needs to be changed, the bolt fastener is removed, and then the clamp 31 is adjusted to a suitable position, and then the bolt fastener is passed through the first mounting hole 311 and the first screw hole 14 to fix the connection. The aperture of the first mounting hole 311 is larger than the first screw hole 14, so that the bolt fastener can be aligned with the first screw hole 14 at different positions in the first mounting hole 311.

[0058] As a preferred embodiment, Figure 5-6 As shown, the needle pressing platform 4 includes a support plate 41, a probe frame 42, a second adjusting screw 43 and a second guide groove 411, wherein the second guide groove 411 is arranged on the support plate 41; the probe frame 42 is arranged on the second guide groove 411, and is used to clamp and fix the probe 5; the second adjusting screw 43 is arranged at the end of the probe frame 42, and is used to push and pull the probe frame 42 to move on the second guide groove 411, so as to realize the position adjustment of the probe frame 42 along the length direction of the base 1.

[0059] As shown in the above structure, the second guide groove 411 is arranged on the support plate 41 and is arranged along the length direction of the base 1. A raised clamping strip is provided at the bottom of the probe frame 42. The probe frame 42 is clamped into the second guide groove 411 through the clamping strip. The second adjusting screw 43 is arranged at the end of the probe frame 42. By rotating the second adjusting screw 43 and pushing or dragging the probe frame 42, the probe frame 42 can be moved linearly on the second guide groove 411, thereby moving the probe 5 on the probe frame 42 to a position corresponding to the chip on the heat sink.

[0060] As a preferred embodiment, the pressure needle platform 4 also includes a pressure needle guide groove 412 and a pressure needle fixing block 44, wherein the pressure needle guide groove 412 is arranged on the support plate 41, and the pressure needle guide groove 412 is arranged on the support plate 41, and its length direction is consistent with the length direction of the base 1; the pressure needle fixing block 44 can move along its length direction in the pressure needle guide groove 412, and can be selectively relatively fixed or released, and is used to clamp the fixed probe 5.

[0061] As in the above structure, the pressure needle fixing block 44 is moved to a suitable position in the pressure needle guide groove 412 and then fixed by bolt fasteners, so as to further fine-tune the position of the probe 5 so that it contacts the laser chip, which is conducive to adapting to laser chips and heat sinks of different sizes.

[0062] As a preferred embodiment, a second mounting hole 421 is provided on the probe frame 42, and a second screw hole 413 is provided on the support plate 41. The aperture of the second mounting hole 421 is larger than the second screw hole 413. The probe frame 42 and the support plate 41 are fixedly connected by bolt fasteners passing through the second mounting hole 421 and the second screw hole 413.

[0063] As in the above structure, when a heat sink of a new size is replaced and the position of the probe frame 42 needs to be changed, the bolt fastener is removed, and then the probe frame 42 is adjusted to a suitable position, and then the bolt fastener is passed through the second mounting hole 421 and the second screw hole 413 to fix the connection. The aperture of the second mounting hole 421 is larger than the second screw hole 413, so that the bolt fastener can be aligned with the second screw hole 413 at different positions in the second mounting hole 421.

[0064] As a preferred embodiment, Figure 1-2 As shown, the slide rail column 2 further includes a third adjusting screw 25 , which is disposed at the end of the mounting block 21 and is used to push and pull the mounting block 21 to move in the column guide groove 11 .

[0065] As shown in the above structure, the third adjusting screw 25 is arranged at the end of the mounting block 21. By rotating the third adjusting screw 25 and pushing or dragging the mounting block 21, the mounting block 21 can be moved linearly in the column guide groove 11. During installation, the end of the third adjusting screw 25 is passed through the column guide groove 11 and is set on the base 1, which can make the connection between the slide rail column 2 and the base more stable.

[0066] As a preferred embodiment, it also includes a cooling water pipeline 6 , which is U-shaped and is arranged inside the base 1 and below the limiting strip 13 .

[0067] As in the above structure, the U-shaped cooling water pipeline 6 is located below the heat sink carrying the laser chip, which is beneficial to heat dissipation.

[0068] The specific working principle is: lift the handle on the manual clamp 24 to move the C-shaped slider upward along the slide rail, then press the handle to position it, so that the position of the needle pressing platform 4 is raised, and the operating space in the height direction of the needle pressing platform 4 and the base 1 becomes larger, and then adjust the position of the slide rail column 2 and the limit assembly 3 according to the size of the heat sink, so that the clamp 31, the limit block 33 and the limit strip 13 together form a limit groove that matches the size of the heat sink, and place the heat sink carrying the laser chip in the limit groove. After placing the heat sink, release the handle to move the C-shaped slider downward along the slide rail, so that the needle pressing platform 4 is close to the heat sink, and then adjust the position of the probe frame 42 and the needle pressing fixing block 44 to make the probe 5 contact with the laser chip, then turn on the power to start the test, and open the cooling water pipeline 6 for heat dissipation.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser chip aging fixture, characterized by: It comprises a base (1), a slide rail column (2), a limit assembly (3), a needle pressing platform (4) and a probe (5), wherein: The slide rail column (2) is arranged on the base (1), and the position of the slide rail column (2) is adjustable along the width direction of the base (1); The limiting component (3) is arranged on the base (1); the position of the limiting component (3) is adjustable along the length direction of the base (1) and is used to limit the heat sink carrying the laser chip; The needle pressing platform (4) is arranged on the slide rail column (2) and is used to carry the probe (5); The probe (5) is arranged on the needle pressing platform (4); the position of the probe (5) is adjustable along the length direction of the base (1) and is used for conductive contact with the laser chip on the heat sink.

2. The laser chip aging fixture as claimed in claim 1, characterized in that: The base (1) is provided with a column guide groove (11), and the slide rail column (2) comprises a mounting block (21) and a column body (22), wherein: The column body (22) is vertically arranged on the base (1); The length direction of the column guide groove (11) is consistent with the width direction of the base (1); The mounting block (21) is connected to one side of the lower end of the column body (22), and the mounting block (21) can move in the column guide groove (11) along its length direction and can be relatively fixed or released selectively.

3. The laser chip aging fixture as claimed in claim 2, characterized in that: The slide rail column (2) further comprises a slide table (23) and a manual clamp (24), wherein: The slide (23) is arranged on the column body (22) and is used to clamp and support the needle pressing platform (4) and enable it to move in a direction perpendicular to the base (1); The manual clamp (24) is arranged on the column body (22) and is fixedly connected to the slide table (23) for positioning the slide table (23).

4. The laser chip aging fixture as claimed in claim 1, characterized in that: The limiting assembly (3) comprises a clamping plate (31), a first adjusting screw (32) and a limiting block (33), and the base (1) is provided with a first guide groove (12) and a limiting strip (13), wherein: The clamping plate (31) is arranged on the first guide groove (12); The first adjusting screw (32) is arranged at the end of the clamping plate (31) and is used to push and pull the clamping plate (31) to move on the first guide groove (12) to achieve position adjustment of the clamping plate (31) along the length direction of the base (1); The limit stopper (33) is fixedly mounted on the clamping plate (31); The clamping plate (31), the limiting block (33) and the limiting strip (13) together form a limiting groove for limiting the heat sink.

5. The laser chip aging fixture as claimed in claim 4, characterized in that: The clamping plate (31) is provided with a first mounting hole (311), and the base (1) is provided with a first screw hole (14); the diameter of the first mounting hole (311) is larger than that of the first screw hole (14); the clamping plate (31) and the base (1) are fixedly connected by bolt fasteners passing through the first mounting hole (311) and the first screw hole (14).

6. The laser chip aging fixture as claimed in claim 1, characterized in that: The needle pressing platform (4) comprises a support plate (41), a probe frame (42), a second adjusting screw (43) and a second guide groove (411), wherein: The second guide groove (411) is arranged on the support plate (41); The probe frame (42) is arranged on the second guide groove (411) and is used to clamp and fix the probe (5); The second adjusting screw (43) is arranged at the end of the probe frame (42) and is used to push and pull the probe frame (42) to move on the second guide groove (411) to achieve position adjustment of the probe frame (42) along the length direction of the base (1).

7. The laser chip aging fixture as claimed in claim 6, characterized in that: The needle pressing platform (4) further comprises a needle pressing guide groove (412) and a needle pressing fixing block (44), wherein: The pressure needle guide groove (412) is arranged on the support plate (41), and its length direction is consistent with the length direction of the base (1); The pressure needle fixing block (44) can move in the pressure needle guide groove (412) along its length direction and can be selectively relatively fixed or released to clamp and fix the probe (5).

8. The laser chip aging fixture as claimed in claim 7, characterized in that: The probe frame (42) is provided with a second mounting hole (421), and the support plate (41) is provided with a second screw hole (413). The aperture of the second mounting hole (421) is larger than that of the second screw hole (413). The probe frame (42) and the support plate (41) are fixedly connected by bolt fasteners passing through the second mounting hole (421) and the second screw hole (413).

9. The laser chip aging fixture as claimed in claim 2, characterized in that: The slide rail column (2) further comprises a third adjusting screw (25), which is arranged at the end of the mounting block (21) and is used for pushing and pulling the mounting block (21) to move in the column guide groove (11).

10. The laser chip aging fixture as claimed in claim 4, characterized in that: It also includes a cooling water pipeline (6), which is U-shaped and is arranged inside the base (1) and below the limit strip (13).

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