A shaft-connected bar alignment and protection device and working method thereof

Abstract

The present invention relates to an axially connected bar alignment and protection device and a working method, which belongs to the field of semiconductor testing, and includes a vacuum loading platform and an alignment / protection plate, wherein the alignment / protection plate is connected to a side of the vacuum loading platform close to the bar placement area through a rotating shaft; the alignment / protection plate is made of an elastic polymer material, and in the bar-loading stage before the bar test, the alignment / protection plate is rotated to a horizontal direction through a rotating shaft to play a protective role, and is used to reduce the risk of the bar falling during the bar-loading stage; in the bar alignment stage, the alignment / protection plate is rotated to a vertical direction through a rotating shaft and is close to the vacuum loading platform, and the upper end height of the alignment / protection plate is higher than the upper edge of the vacuum loading platform, and the bar is aligned against the alignment / protection plate. The alignment / protection plate of the present invention can be used for two purposes, and can reduce the risk of the bar falling at the vacuum control port when loading, and can ensure that the bar is parallel as a whole when aligning the bar.

Description

Technical Field

[0001] The invention relates to an axially connected bar alignment and protection device and a working method thereof, belonging to the technical field of semiconductor testing, in particular to the performance test of an intermediate structure in semiconductor laser manufacturing. Background Art

[0002] The emergence of semiconductor lasers (LD) has greatly promoted the development of laser technology. Due to its significant advantages such as light weight, small size, and high electro-optical conversion efficiency, LD is widely used in information technology, communications, medicine, military and other fields. In the rapid development of semiconductor lasers, how to ensure the reliability and repeatability of laser performance is a challenging problem. The automatic bar tester plays a vital role in quality control and ensuring device reliability.

[0003] In the entire process from wafer to packaged laser, cleaving the wafer into bars is the first step. The performance of the packaged laser can be measured by characterizing the electrical and optical properties of the bars. If the bar performance is poor, the performance of the packaged laser will not meet the usage requirements. Therefore, it is necessary to screen out the bars with poor performance through an automatic bar tester and no longer proceed to the next process. This saves time and cost while also improving product yield.

[0004] The automatic bar tester can test electrical parameters and optical parameters. The electrical parameters mainly include turn-on voltage, threshold current, slope efficiency, operating voltage, resistance and other parameters; the optical parameters mainly include wavelength, half-width, fast-axis divergence angle and slow-axis divergence angle and other parameters.

[0005] Bars are cleaved based on wafers. In actual applications, the laser core cavity length and period are relatively short, measured in microns. Therefore, a large number of bars can be obtained by cleaving a wafer. Each bar needs to be screened for performance, so efficient and accurate bar testing is particularly important in actual production.

[0006] Traditional automatic bar testers mainly include CCD cameras, vacuum loading platforms, integrating spheres, probes, power supplies and other important components. During testing, the bar is placed on the vacuum loading platform, and the CCD camera is used to feedback the specific position of the bar, and then the probe contacts the bar for subsequent testing. The process of placing the bar on the vacuum loading platform is the first and most complex process, which requires operations such as loading, swinging and parallel adjustment. Shortening this process time is of great significance to the entire testing process.

[0007] European patent EP1220394A2 discloses a detection device for an automatic bar tester, including a carrying device, a movable testing device and a detection device. The carrying device is used to place the bar, the movable testing device ensures that the semiconductor laser is tested in a relative direction, and the detection device is used to sample around the laser. This bar test detection device is relatively fast and reduces the error rate of the test, ensuring the accuracy of the test results, and provides an optimization idea for the design of the automatic bar tester. However, this design does not pay too much attention to the alignment and protection requirements of the carrying device, and there are still problems that the winding and swinging of the bar is time-consuming and easy to fall. Summary of the invention

[0008] In view of the shortcomings of the existing automatic bar testing machine, the present invention proposes an axially connected bar alignment and protection device and a working method thereof. The alignment / protection plate of the present invention can be "one plate for two purposes", which can reduce the risk of the bar falling at the vacuum control port when the bar is loaded, and can ensure that the bar is overall parallel when the bar is aligned.

[0009] The present invention adopts the following technical solutions:

[0010] A shaft-connected bar alignment and protection device comprises a vacuum loading platform and an alignment / protection plate, wherein the alignment / protection plate is connected to a side of the vacuum loading platform close to a bar placement area via a rotating shaft, wherein the bar placement area is provided with a vacuum port, and the bar is adsorbed on the bar placement area via the vacuum port. In the present invention, the vacuum loading platform is preferably provided with 4 groups of vacuum ports, and the bar is fixed on the vacuum loading platform by vacuum adsorption, and each vacuum port is opened or closed separately to facilitate the bar loading, swinging and automatic testing, and to maintain stability during probe piercing. Adsorbing the bar by vacuum during testing is a conventional technique and will not be described in detail here.

[0011] The alignment / protection plate is made of a high polymer material with elasticity, which can reduce damage to the end surface. The rotation axis is arranged along the length direction of the alignment / protection plate. In the bar-loading stage before the bar test, the alignment / protection plate is rotated to the horizontal direction by the rotation axis to play a protective role, which is used to reduce the risk of the bar falling in the bar-loading stage; in the bar-alignment stage, the alignment / protection plate is rotated to the vertical direction by the rotation axis and is close to the vacuum loading platform, and the upper end of the alignment / protection plate is higher than the upper edge of the vacuum loading platform, so that the bar leans against the alignment / protection plate for alignment;

[0012] The length L1 of the alignment / protection plate is greater than the length L2 of the bar placement area, and the width W of the alignment / protection plate is greater than the distance from the rotation axis to the bar placement area and less than the distance from the rotation axis to the bottom of the vacuum loading platform.

[0013] The shaft-connected bar alignment and protection device provided by the present invention adopts a rotating shaft connection between the vacuum loading platform and the alignment / protection plate. Due to the rotatability of the shaft, the alignment / protection plate can be replaced at different angles. Therefore, the alignment / protection plate can change its angle according to different working conditions of the bar testing machine to activate the alignment and protection functions of the device.

[0014] Preferably, the alignment / protection plate is made of polyester elastomer, fluorine-containing elastomer or silicone elastomer. If it is made of a harder material, such as a metal material, it will cause irreversible damage to the surface and end face of the bar.

[0015] Preferably, the alignment / protection plate is provided with protective outer edges in the width direction (i.e., the two short sides) and in the long side direction away from the bar placement area (i.e., the long side away from the bar placement area). Except for the edge connected to the rotating shaft, the other three sides are provided with protective outer edges. The height of the protective outer edges is preferably 0.5 cm, so as to better avoid the risk of the bars falling.

[0016] In the loading stage before the piercing test, the bar is taken out of the material box with a suction pen and placed at the vacuum port. During this period, the suction pen has been turned on for adsorption. When it is placed at the vacuum port, the suction function of the suction pen is turned off, and the adsorption force disappears, which may cause the position of the bar to be out of the vacuum control port. The traditional automatic bar tester has no protection device, and there is a risk of the bar falling. The present invention is provided with an alignment / protection plate, which has a protection opening function. The alignment / protection plate is rotated to a direction horizontal to the vacuum loading platform, which effectively avoids the risk of the bar falling at the vacuum control port due to the instantaneous disappearance of the adsorption force of the suction pen, thereby avoiding The abnormal situation that the bar cannot continue to be tested due to surface or end face damage. Specifically: when the protection function of the alignment / protection plate is enabled, the alignment / protection plate is horizontally unfolded along the vacuum loading platform. Because the alignment / protection plate has a width of 1.5 cm and a protective outer edge of 0.5 cm, it can promptly catch the bar when it falls from the vacuum loading platform due to an accident, preventing the bar from falling directly onto the instrument chassis table (which is a metal table). At the same time, because the protection plate is made of a polymer elastic material, the surface and end face of the bar are less damaged, and the bar can continue to measure basic electrical and optical parameters according to test requirements.

[0017] After the bar is loaded, the bar alignment stage begins. The tester needs to adjust the end face of the bar to a position parallel to and tangent to the outer extension of the vacuum loading platform to ensure the subsequent light collection by the integrating sphere and analyze the optical parameters of the bar and other information. The traditional automatic bar tester does not have any device on the outer edge of the vacuum loading platform. Due to the vacuum adsorption effect in the vacuum port at this stage, it is difficult to move the position of the bar. When the bar is adjusted with a push bar fixture, if the force is small, the position of the bar is not easy to move. If the force is large, it is easy to cause one end to move too much. The alignment / protection plate provided in the present invention has an alignment function. The alignment / protection plate is rotated by an angle through a rotating shaft. The alignment / protection plate is rotated to a state of being in close contact with the outer edge of the vacuum loading platform, and the height of the alignment / protection plate is higher than the upper edge of the vacuum loading platform. The dead points at both ends of the bar (i.e., the non-patterned tube cores at both ends that have not undergone processes such as lithography and etching) are gently pushed with a fixture to make the bar and the outermost edge of the vacuum loading platform parallel and tangent. The bar is arranged in a row close to the outer edge of the vacuum loading platform. Due to the presence of the alignment / protection plate, the position of the bar will not move too much, and the overall parallelism of the bar can be ensured, which greatly shortens the time for adjusting the parallelism of the bar and effectively improves the overall efficiency of the bar test.

[0018] Before starting the test, the test preparation stage begins, and the alignment / protection plate enters the ready-to-work state, with its angle converted to downward and perpendicular to the ground, preparing for the work of the integrating sphere in the test stage.

[0019] Preferably, the length L of the alignment / protection plate is 14 cm, slightly longer than the length L2 of the bar placement area, and the width W of the alignment / protection plate is 1.5 cm, slightly higher than the upper edge of the vacuum loading platform.

[0020] Preferably, the vacuum loading platform is made of copper-gold-plated material, which is conducive to the transmission of electrons and the dissipation of heat generated during the bar test, and can reduce the error of the test result to a greater extent.

[0021] Preferably, a copper connection block is fixedly provided at both ends of the bar placement area of ​​the vacuum loading platform, preferably by bolt fixing, and the rotating shaft is installed between the two copper connection blocks and the alignment / protection plate.

[0022] The outer sides of the two copper connection blocks protrude from the vacuum loading platform, which can facilitate the setting of the rotation axis and provide sufficient rotation and adjustment space for the alignment / protection plate.

[0023] Preferably, each copper connecting block is provided with an arc groove, the rotating shaft is hinged on the two copper connecting blocks and can rotate in the arc groove, one side (i.e., the long side) corresponding to the length direction of the alignment / protection plate is fixedly connected to the rotating shaft (welding or self-tapping connection is possible), and the alignment / protection plate can rotate with the rotation of the rotating shaft. The arc groove here is preferably smaller than the semi-arc groove to avoid interfering with the rotation of the alignment / protection plate. One end of the rotating shaft is fixedly connected to a rotating handwheel, and the rotation angle of the rotating shaft can be driven by rotating the handwheel. The rotating handwheel is located in front of the end of one of the copper connecting blocks, and a number of fastening bolts are evenly arranged on the rotating handwheel for fastening the rotating handwheel to the end of the copper connecting block at a suitable position.

[0024] When designing the present invention, the position of the rotating hand wheel is not located directly in front of the end of the copper connecting block, only a part of it is located in front of the copper connecting block. In order to be able to fasten the rotating hand wheel to the front end of the copper connecting block at any angle, the number of fastening bolts is preferably greater than or equal to 4.

[0025] Preferably, the rotating hand wheel is provided with a scale, and the setting of the scale can measure the rotation angle of the rotating hand wheel, and the scale can be marked as 0 degrees, 90 degrees, 180 degrees, 270 degrees, etc. It can be set that when the rotating hand wheel is at 0 degrees directly below, the alignment / protection plate is perpendicular to the ground, when the 0 degree position is horizontally facing right, the alignment / protection plate plays a protective role, and when the 0 degree position is facing directly above, the alignment / protection plate plays an alignment role. The rotating hand wheel, the rotating shaft and the alignment / protection plate are fixedly connected, so the rotation angle of the alignment / protection plate can be controlled according to the rotation angle of the rotating hand wheel to fix it in an appropriate position.

[0026] Alternatively, a dial is provided at the position of the rotating handwheel, the dial is fixed (for example, it can be fixed on the copper connecting block by a bracket), and the dial is located in front of the rotating handwheel, the dial is a circular ring structure (to facilitate exposing the indication arrow on the rotating handwheel), and a scale is provided on the circular ring structure, and an indication arrow is provided in the middle of the rotating handwheel. When the rotating handwheel rotates relative to the dial, the rotation angle of the rotating handwheel can be measured. For example, if 0 degrees, 90 degrees, 180 degrees, 270 degrees, etc. are marked on the dial, it can be set that when the indication arrow of the rotating handwheel indicates 0 degrees, the alignment / protection plate is perpendicular to the ground direction, when the indication arrow indicates 90 degrees, the alignment / protection plate plays a protective role, and when the indication arrow indicates 180 degrees, the alignment / protection plate plays an alignment role.

[0027] A working method of the above-mentioned shaft-connected bar alignment and protection device comprises:

[0028] In the bar loading stage before the piercing test, first, the alignment / protection plate is rotated to the horizontal direction through the rotating shaft and fixed. At this time, the alignment / protection plate is located on the side of the bar placement area. Then, the bar is taken out of the material box with a suction pen and placed in the vacuum port of the bar placement area. During this period, the suction pen has been turned on for adsorption. When it is placed in the vacuum port, the suction function of the suction pen is turned off, and the adsorption force disappears. The bar is easy to fall off the vacuum port. Due to the bearing function of the alignment / protection plate, even if the bar falls, it will fall on the alignment / protection plate. The alignment / protection plate is a high polymer material with elasticity, which has little damage to the surface and end face of the bar, and the bar can continue to be tested;

[0029] After winding, the bar enters the bar alignment stage. The alignment / protection plate is rotated to the vertical direction through the rotating shaft and close to the vacuum loading platform, and the upper end of the alignment / protection plate is higher than the upper edge of the vacuum loading platform. The tester adjusts the end face of the bar to the outermost edge of the vacuum loading platform and aligns it with the alignment / protection plate. Several bars are parallel as a whole. Then, the alignment / protection plate is rotated downward to the vertical direction through the rotating shaft and enters the working state. Subsequently, the bar is light-collected through an integrating sphere to analyze the optical parameters of the bar and other information. The electrical parameter information of the bar is analyzed through the current-voltage curve and the current-power curve.

[0030] For any details not provided in the present invention, please refer to the prior art.

[0031] The beneficial effects of the present invention are:

[0032] (1) When the bar is being loaded, the alignment / protection plate is activated to protect it, effectively preventing the bar from falling due to the instantaneous disappearance of the suction force of the suction pen, which can cause irreversible damage, thereby saving production costs and improving the bar's transfer rate.

[0033] (2) When adjusting the bar to be parallel, the alignment / protection plate activates the alignment function, which effectively shortens the time to adjust the bar to be parallel and tangent to the outer extension of the vacuum loading platform, greatly improving the test efficiency of the automatic bar tester.

[0034] (3) By adopting a rotating shaft connection, the alignment / protection plate can achieve the effect of "one plate for two uses" by switching at different angles, which simplifies the process manufacturing process, saves production costs, and has important practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A cross-sectional view of the shaft-connected bar alignment and protection device of the present invention;

[0036] Figure 2 for Figure 1 Top view of the center alignment / protection plate when it is in protective function;

[0037] Figure 3It is a structural schematic diagram of a certain embodiment of a rotating hand wheel;

[0038] Among them, 1-alignment / protection plate, 1'-alignment / protection plate state two, 1"-alignment / protection plate state three, 2-rotation axis, 3-bar placement area, 4-copper connecting block, 5-vacuum loading platform, 6-protection outer edge, 7-rotation hand wheel, 8-bolt. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, they will be described in detail with reference to the accompanying drawings and specific embodiments, but are not limited to these. Anything not fully described in the present invention shall be based on conventional techniques in the art.

[0040] Embodiment 1:

[0041] A shaft-connected bar alignment and protection device, such as Figures 1-2 As shown, it includes a vacuum loading platform 5 and an alignment / protection plate 1. The alignment / protection plate 1 is connected to a side of the vacuum loading platform 5 near the bar placement area 3 through a rotating shaft 2. The vacuum loading platform is fixed to the cooling table by bolts 8. The bar placement area 3 is provided with a vacuum port. The bar is adsorbed on the bar placement area 3 through the vacuum port. In the present invention, the vacuum loading platform is preferably provided with 4 groups of vacuum ports. The bar is fixed on the vacuum loading platform by vacuum adsorption. Each vacuum port is opened or closed separately to facilitate the bar loading and swinging and automatic testing. It is stable during the probe piercing test. The vacuum adsorption of the bar during the test belongs to conventional technology and will not be repeated here.

[0042] The alignment / protection plate 1 is made of a high polymer material with elasticity, which can reduce damage to the end surface. The rotation axis 2 is set along the length direction of the alignment / protection plate 1. In the bar-loading stage before the bar test, the alignment / protection plate 1 is rotated to the horizontal direction by the rotation axis 2 to play a protective role. Figure 1 The alignment / protection plate is in the state of number 1, which is used to reduce the risk of falling during the bar loading stage; during the bar alignment stage, the alignment / protection plate 1 is rotated to a vertical direction through the rotation axis 2 and is close to the vacuum loading platform, such as Figure 1 The middle alignment / protection plate state 2 1', and the upper end height of the alignment / protection plate 1 is higher than the upper edge of the vacuum loading platform 5, and the bar is aligned against the alignment / protection plate;

[0043] The length L1 of the alignment / protection plate 1 is greater than the length L2 of the bar placement area, and the width W of the alignment / protection plate is greater than the distance from the rotation axis to the bar placement area and less than the distance from the rotation axis to the bottom of the vacuum loading platform.

[0044] The shaft-connected bar alignment and protection device provided by the present invention adopts a rotating shaft connection between the vacuum loading platform and the alignment / protection plate. Due to the rotatability of the shaft, the alignment / protection plate can be replaced at different angles. Therefore, the alignment / protection plate can change its angle according to different working conditions of the bar testing machine to activate the alignment and protection functions of the device.

[0045] Embodiment 2:

[0046] An axially connected bar alignment and protection device is shown in Example 1, except that the alignment / protection plate 1 is made of polyester elastomer. If it is made of a harder material, such as metal, it will cause irreversible damage to the surface and end faces of the bar.

[0047] Embodiment 3:

[0048] An axially connected bar alignment and protection device is shown in Example 1, except that protective edges are provided on the width direction (i.e., the two short sides) of the alignment / protection plate 1 and on the long side direction away from the bar placement area (i.e., the long side away from the bar placement area), and except for the side connected to the rotating shaft, the other three sides have protective edges, and the height of the protective edge 6 is 0.5 cm, so as to better avoid the risk of the bar falling.

[0049] In the strip loading stage before the piercing test, the bar is taken out of the material box with a suction pen and placed at the vacuum port. During this period, the suction pen keeps the adsorption function on. When it is placed at the vacuum port, the adsorption function of the suction pen is turned off, and the adsorption force disappears, which may cause the position of the bar to be out of the vacuum control port. The traditional automatic bar testing machine has no protection device, and there is a risk of the bar falling. The present invention is provided with an alignment / protection plate, which has a protection function. The alignment / protection plate is rotated to a direction horizontal to the vacuum loading platform, which effectively avoids the risk of the bar falling at the vacuum control port due to the instantaneous disappearance of the adsorption force of the suction pen, thereby avoiding the abnormal situation that the bar cannot continue to be tested due to surface or end face damage. Specifically: when the protection function of the alignment / protection plate is enabled, the alignment / protection plate is horizontally unfolded along the vacuum loading platform, such as Figure 1 As shown in the state of number 1, because the alignment / protection plate has a width of 1.5 cm and a protective outer edge of 0.5 cm, it can promptly catch the bar when it falls from the vacuum loading platform due to an accident, preventing the bar from falling directly onto the instrument case table (which is a metal table). At the same time, because the protection plate is made of a polymer elastic material, the surface and end face of the bar are less damaged, and the bar can continue to measure basic electrical and optical parameters according to test requirements.

[0050] After the bar is loaded, it enters the bar alignment stage. The tester needs to adjust the end face of the bar to a position parallel to and tangent to the outer extension of the vacuum loading platform to ensure the subsequent light collection by the integrating sphere and analyze the optical parameters of the bar and other information. The traditional automatic bar tester does not have any device on the outer edge of the vacuum loading platform. Due to the vacuum adsorption effect in the vacuum port at this stage, it is difficult to move the position of the bar. When the bar is adjusted with a push bar fixture, if the force is small, the position of the bar is not easy to move. If the force is large, it is easy to cause one end to move too much. The alignment / protection plate provided in the present invention has an alignment function. The alignment / protection plate is rotated by the rotating shaft. The alignment / protection plate is rotated to a state of being in close contact with the outer edge of the vacuum loading platform, and the height of the alignment / protection plate is higher than the upper edge of the vacuum loading platform. Figure 1 In the middle alignment / protection plate state 2', use a fixture to gently push the dead points at both ends of the bar (i.e., the non-patterned tube cores at both ends that have not undergone processes such as lithography and etching) to make the bar and the outermost edge of the vacuum carrier platform parallel and tangent, and the bar is arranged in a row close to the vacuum loading platform. Because of the presence of the alignment / protection plate, the position of the bar will not move too much, and the overall parallelism of the bar can be ensured, which greatly shortens the time for adjusting the parallelism of the bar and effectively improves the overall efficiency of the bar test.

[0051] Before starting the test, the test preparation stage is entered, and the alignment / protection plate enters the working state, and its angle is converted to downward and perpendicular to the ground, such as Figure 1 In the middle alignment / protection plate state 3 1", prepare for the integrating sphere to work in the test phase.

[0052] Embodiment 4:

[0053] An axially connected bar alignment and protection device is shown in Example 1, except that the length L of the alignment / protection plate 1 is 14 cm, slightly longer than the length L2 of the bar placement area, and the width W of the alignment / protection plate 1 is 1.5 cm, slightly higher than the upper edge of the vacuum loading platform.

[0054] Embodiment 5:

[0055] An axially connected bar alignment and protection device, as shown in Example 1, is different in that the vacuum loading platform 5 is made of copper-gold-plated material, which is beneficial to the transmission of electrons and the dissipation of heat generated during the bar test, and can reduce the error of the test result to a greater extent.

[0056] Embodiment 6:

[0057] An axially connected bar alignment and protection device, as shown in Example 1, is different in that a copper connecting block 4 is fixedly provided at both ends of the bar placement area 3 of the vacuum loading platform, preferably by bolt fixing, and a rotating shaft 2 is installed between the two copper connecting blocks 4 and the alignment / protection plate 1.

[0058] The outer sides of the two copper connection blocks protrude from the vacuum loading platform, which can facilitate the setting of the rotation axis and provide sufficient rotation and adjustment space for the alignment / protection plate.

[0059] Embodiment 7:

[0060] An axially connected bar alignment and protection device, as shown in Example 1, the difference is that an arc groove is provided on each copper connection block, and the rotating shaft 2 is hinged on the two copper connection blocks 4 and can rotate in the arc groove. One side (i.e., the long side) corresponding to the length direction of the alignment / protection plate 1 is fixedly connected to the rotating shaft 2 (self-tapping connection), and the alignment / protection plate 1 can rotate with the rotation of the rotating shaft 2. The arc groove here is preferably smaller than the semi-arc groove to avoid interfering with the rotation of the alignment / protection plate. One end of the rotating shaft 2 is fixedly connected to a rotating handwheel 7, and the rotation angle of the rotating shaft can be driven by rotating the handwheel 7. The rotating handwheel 7 is located in front of the end of one of the copper connection blocks, and a number of fastening bolts are evenly arranged on the rotating handwheel 7 for fastening the rotating handwheel 7 to the end of the copper connection block 4 at a suitable position.

[0061] When designing this embodiment, the position of the rotating hand wheel 7 is not located directly in front of the end of the copper connecting block, only a part of it is located in front of the copper connecting block. In order to be able to fasten the rotating hand wheel to the front end of the copper connecting block at any angle, the number of fastening bolts is 6.

[0062] Embodiment 8:

[0063] A shaft-connected bar alignment and protection device, as shown in Example 7, the difference is that a scale is set on the rotating hand wheel, such as Figure 3 As shown, the scale setting can measure the rotation angle of the rotating hand wheel, and the scale can be marked as 0 degrees, 90 degrees, 180 degrees, and 270 degrees. It can be set that when the rotating hand wheel is at the 0-degree position directly below, the alignment / protection plate is perpendicular to the ground, when the 0-degree position is horizontally facing right, the alignment / protection plate plays a protective role, and when the 0-degree position is facing directly upward, the alignment / protection plate plays an alignment role. The rotating hand wheel, the rotating shaft, and the alignment / protection plate are fixedly connected, so the rotation angle of the alignment / protection plate can be controlled according to the rotation angle of the rotating hand wheel to fix it in an appropriate position.

[0064] Embodiment 9:

[0065] An axially connected bar alignment and protection device, as shown in Example 7, differs in that a dial (not shown in the figure) is provided at the position of the rotating hand wheel, the dial is fixed, the dial is fixed to the copper connecting block by a bracket, and the dial is located in front of the rotating hand wheel, the dial is a circular ring structure, which is convenient for exposing the indicating arrow on the rotating hand wheel, a scale is provided on the circular ring structure, and an indicating arrow is provided in the middle of the rotating hand wheel. When the rotating hand wheel is rotated relative to the dial, the rotation angle of the rotating hand wheel can be measured. For example, 0 degrees, 90 degrees, 180 degrees, 270 degrees, etc. are marked on the dial. It can be set that when the indicating arrow of the rotating hand wheel indicates 0 degrees, the alignment / protection plate is perpendicular to the ground direction, when the indicating arrow indicates 90 degrees, the alignment / protection plate plays a protective role, and when the indicating arrow indicates 180 degrees, the alignment / protection plate plays an alignment role.

[0066] Embodiment 10:

[0067] A working method of a shaft-connected bar alignment and protection device, comprising:

[0068] In the bar loading stage before the bar test, first, the alignment / protection plate 1 is rotated to the horizontal direction through the rotation axis 2 and fixed, such as the state of number 1. At this time, the alignment / protection plate 1 is located on the side of the bar placement area 3. Then, the bar is taken out of the material box with a suction pen and placed in the vacuum port of the bar placement area. During this period, the suction pen has been turned on for adsorption. When it is placed in the vacuum port, the suction function of the suction pen is turned off, and the adsorption force disappears. The bar is easy to fall off the vacuum port. Due to the bearing function of the alignment / protection plate, even if the bar falls, it will fall on the alignment / protection plate. The alignment / protection plate 1 is a high polymer material with elasticity, which has little damage to the surface and end face of the bar, and the bar can continue to be tested;

[0069] After winding, the bar alignment stage is entered, and the alignment / protection plate 1 is rotated to a vertical direction through the rotating shaft 2 and is close to the vacuum loading platform, such as Figure 1 The alignment / protection plate is in state 2 1', and the upper end height of the alignment / protection plate 1 is higher than the upper edge of the vacuum loading platform 5. The tester adjusts the end face of the bar to the outermost edge of the vacuum loading platform and aligns it with the alignment / protection plate 1. The bars are parallel as a whole, and then the alignment / protection plate 1 is rotated downward to the vertical direction through the rotating shaft 2, as shown in FIG. Figure 1 In the middle alignment / protection board state three, 1", it enters the standby state. Subsequently, the light of the bar is collected through the integrating sphere to analyze the optical parameters and other information of the bar, and the electrical parameter information of the bar is analyzed through the current-voltage curve and current-power curve.

[0070] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A shaft-connected bar alignment and protection device, characterized in that: It includes a vacuum loading platform and an alignment / protection plate, wherein the alignment / protection plate is connected to a side of the vacuum loading platform close to a bar placement area through a rotating shaft, and the bar placement area is provided with a vacuum port, and the bar is adsorbed on the bar placement area through the vacuum port; The alignment / protection plate is made of elastic polymer material, and the rotation axis is arranged along the length direction of the alignment / protection plate. In the bar loading stage before the bar test, the alignment / protection plate is rotated to the horizontal direction by the rotation axis to play a protective role, so as to reduce the risk of the bar falling in the bar loading stage; in the bar alignment stage, the alignment / protection plate is rotated to the vertical direction by the rotation axis and is close to the vacuum loading platform, and the upper end of the alignment / protection plate is higher than the upper edge of the vacuum loading platform, so that the bar leans against the alignment / protection plate for alignment; The length L1 of the alignment / protection plate is greater than the length L2 of the bar placement area, and the width W of the alignment / protection plate is greater than the distance from the rotation axis to the bar placement area and less than the distance from the rotation axis to the bottom of the vacuum loading platform; A copper connection block is fixedly disposed at both ends of the bar placement area of ​​the vacuum loading platform, and the rotating shaft is installed between the two copper connection blocks and the alignment / protection plate; An arc groove is provided on each copper connecting block, the rotating shaft is hinged on the two copper connecting blocks and can rotate in the arc groove, one side corresponding to the length direction of the alignment / protection plate is fixedly connected to the rotating shaft, the alignment / protection plate can rotate with the rotation of the rotating shaft, one end of the rotating shaft is fixedly connected to a rotating handwheel, and the rotation angle of the rotating shaft can be driven by rotating the handwheel, the rotating handwheel is located in front of the end of one of the copper connecting blocks, and a number of fastening bolts are evenly arranged on the rotating handwheel for fastening the rotating handwheel to the end of the copper connecting block at a suitable position.

2. The shaft-connected bar alignment and protection device according to claim 1, characterized in that: The alignment / protection plate is made of polyester elastomer, fluorine-containing elastomer or silicone elastomer.

3. The shaft-connected bar alignment and protection device according to claim 1, characterized in that: The alignment / protection plate is provided with a protective outer edge in the width direction and in the long side direction away from the bar placement area, and the height of the protective outer edge is 0.5 cm.

4. The shaft-connected bar alignment and protection device according to claim 1, characterized in that: The alignment / protection plate has a length L of 14 cm and a width W of 1.5 cm.

5. The shaft-connected bar alignment and protection device according to claim 1, characterized in that: The vacuum loading platform is made of copper-gold-plated material.

6. The shaft-connected bar alignment and protection device according to claim 5, characterized in that: The rotating hand wheel is provided with a scale, and the setting of the scale can measure the rotation angle of the rotating hand wheel; Alternatively, a dial is provided at the position of the rotating handwheel, the dial is fixed and located in front of the rotating handwheel, the dial is a circular ring structure, and a scale is provided on the circular ring structure. An indicator arrow is provided in the middle of the rotating handwheel, and when the rotating handwheel rotates relative to the dial, the rotation angle of the rotating handwheel can be measured.

7. A method for operating the shaft-connected bar alignment and protection device according to claim 1, characterized in that: include: In the bar loading stage before the piercing test, first, the alignment / protection plate is rotated to the horizontal direction through the rotating shaft and fixed. At this time, the alignment / protection plate is located on the side of the bar placement area. Then, the bar is taken out of the material box with a suction pen and placed in the vacuum port of the bar placement area. During this period, the suction pen has been turned on for adsorption. When it is placed in the vacuum port, the suction function of the suction pen is turned off, and the adsorption force disappears. The bar is easy to fall off the vacuum port. Due to the bearing function of the alignment / protection plate, even if the bar falls, it will fall on the alignment / protection plate. The alignment / protection plate is a high polymer material with elasticity, which has little damage to the surface and end face of the bar, and the bar can continue to be tested; After the bars are wound, the bar alignment stage is entered. The alignment / protection plate is rotated to the vertical direction through the rotating shaft and is close to the vacuum loading platform. The upper end of the alignment / protection plate is higher than the upper edge of the vacuum loading platform. The tester adjusts the end face of the bar to the outermost edge of the vacuum loading platform and aligns it with the alignment / protection plate. Several bars are parallel as a whole. Then the alignment / protection plate is rotated downward to the vertical direction through the rotating shaft and enters the standby state. Subsequently, the bar is light-collected through an integrating sphere to analyze the optical parameter information of the bar, and the electrical parameter information of the bar is analyzed through the current-voltage curve and the current-power curve.

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