A COS welding fixture for semiconductor lasers

Abstract

The present invention discloses a COS welding fixture for semiconductor lasers, which belongs to the field of COS welding technology, and includes a bearing positioning component and at least one cantilever spring probe component; the bearing positioning component is used to bear and position the tube shell base; the cantilever spring probe component includes at least one positioning rod, a compression spring corresponding to the positioning rod, at least one spring probe, a cantilever bracket and a locking piece; the positioning rod is arranged on the bearing positioning component, and the positioning rod is covered with a compression spring; the compression spring is compressed between the bearing positioning component and the cantilever bracket; the positioning rod passes through the cantilever bracket; the locking piece is used to limit the cantilever bracket to a certain distance from the bearing positioning component; the spring probe is arranged on the cantilever bracket, and is used to press the COS onto the solder provided on the tube shell base. The present invention is a COS welding fixture for semiconductor lasers, which can effectively prevent the displacement deviation of the COS during the welding process and improve the positioning accuracy of the COS.

Description

Technical Field

[0001] The invention belongs to the technical field of COS welding, and in particular relates to a COS welding fixture used in semiconductor lasers. Background Art

[0002] When welding COS (Chip-On-Submount) in semiconductor lasers, it is necessary to quickly and accurately position COS on the base of the tube shell and effectively fix it to prevent COS from deforming and causing displacement deviation during welding, so as to achieve effective welding of COS on the base of the tube shell. The existing welding clamps are large in size, cannot be adjusted at a single point, have low welding efficiency, and are prone to displacement deviation of COS due to thermal expansion during COS welding, which ultimately leads to inaccurate COS positioning. Summary of the invention

[0003] The purpose of the present invention is to provide a COS welding fixture for semiconductor lasers to solve the problem that the thermal expansion phenomenon during COS welding easily causes the displacement deviation of COS. To achieve the above purpose, the present invention provides the following technical solutions:

[0004] A COS welding fixture for semiconductor lasers comprises a bearing and positioning assembly and at least one cantilever spring probe assembly; the bearing and positioning assembly is used to bear and position a tube shell base; the cantilever spring probe assembly comprises at least one positioning rod, a compression spring corresponding to the positioning rod, at least one spring probe, a cantilever bracket and a locking piece; the positioning rod is arranged on the bearing and positioning assembly, and the positioning rod is covered with a compression spring; the compression spring is compressed between the bearing and positioning assembly and the cantilever bracket; the positioning rod passes through the cantilever bracket; the locking piece is used to limit the cantilever bracket to a position at a certain distance from the bearing and positioning assembly; the spring probe is arranged on the cantilever bracket, and is used to press the COS onto the solder provided on the tube shell base. It can be seen from the above structure that the tube shell base is placed on the load-bearing positioning component and fixed in position; there are several pieces of solder on the tube shell base, and the COS to be welded is placed on the solder. In order to quickly and accurately weld the COS to the tube shell base through solder, the COS must be pressed; each COS is pressed by a cantilever spring probe assembly, so that the clamping force of each COS can be adjusted individually; ensure that each COS is stably pressed; the spring probe is arranged on the cantilever bracket, and when the cantilever bracket moves downward, the spring probe moves downward synchronously and presses on the COS, so that the COS is close to the solder; the positioning rod passes through the cantilever bracket to guide the movement of the cantilever bracket; after the spring probe is pressed on the COS, the compression spring makes the cantilever bracket tend to move away from the load-bearing positioning component, and cooperates with the locking member to lock the position of the cantilever bracket to ensure that the COS is reliably pressed; because the spring probe has a certain elasticity, when the COS is welded at high temperature, the deformation stress formed between the COS and the spring probe can be released through the expansion and contraction of the spring probe, effectively reducing the displacement deviation caused by thermal expansion during COS welding. The cantilever spring probe assembly improves the accuracy of mechanical positioning, and can effectively realize the positioning adjustment of a single COS in the tube shell and all COS welding. At the same time, it improves the production efficiency of the process, saves costs, and increases economic benefits.

[0005] Furthermore, the positioning rod is provided with a limiting portion for limiting the maximum distance of the cantilever bracket away from the load-bearing positioning assembly. As can be seen from the above structure, the positioning rod is provided with a limiting portion, which can be a bolt head at the top of the positioning rod, to prevent the cantilever bracket from detaching from the positioning rod and limit the maximum distance of the cantilever bracket away from the load-bearing positioning assembly.

[0006] Furthermore, the positioning rod is provided with a thread, and the thread is screwed on the threaded hole provided on the load-bearing positioning assembly to connect and fix the positioning rod and the load-bearing positioning assembly. From the above structure, it can be seen that the positioning rod and the load-bearing positioning assembly are connected by threads, which is convenient for the installation and removal of the positioning rod and the installation of the compression spring.

[0007] Furthermore, the locking member is a bolt; the rod of the bolt passes through the cantilever bracket and is screwed on the corresponding threaded hole provided on the load-bearing positioning assembly through a thread; the head of the bolt limits the cantilever bracket to a certain distance from the load-bearing positioning assembly. From the above structure, it can be seen that the bolt adjusts the distance between the cantilever bracket and the load-bearing positioning assembly by changing the depth of the rod screwed on the load-bearing positioning assembly, and finally ensures that the COS is reliably pressed by the spring probe.

[0008] Furthermore, the cantilever spring probe assembly has two positioning rods, so that the cantilever bracket can only move linearly. From the above structure, it can be seen that each cantilever spring probe assembly has two positioning rods, and the two positioning rods guide the cantilever bracket, so that the cantilever bracket can only move linearly away from or close to the load-bearing positioning assembly, and the positioning accuracy is higher and more reliable.

[0009] Further, the cantilever spring probe assembly has four spring probes and is arranged at one end of the cantilever bracket. As can be seen from the above structure, the four spring probes are pressed on the four corners of the COS, and the COS is reliably pressed by the four spring probes.

[0010] Furthermore, there are fourteen cantilever spring probe assemblies, which are arranged in two rows in an alternating manner, with seven cantilever spring probe assemblies in each row. As can be seen from the above structure, the number of cantilever spring probe assemblies required is determined according to the number of COSs.

[0011] Furthermore, the bearing and positioning assembly includes a first positioning member of the tube shell, a second positioning member of the tube shell, a reference bearing plate and two reference positioning blocks; the reference bearing plate is used to bear the tube shell base; the two reference positioning blocks are fixed on the reference bearing plates on both sides of the tube shell base; the first positioning member of the tube shell and the second positioning member of the tube shell are respectively fixed on the reference bearing plates at the front and rear positions of the tube shell base; the first positioning member of the tube shell, the second positioning member of the tube shell and the two reference positioning blocks are used together to position the tube shell base; the cantilever spring probe assembly is arranged on the reference positioning block. It can be seen from the above structure that the first positioning member of the tube shell, the second positioning member of the tube shell and the two reference positioning blocks are fixed on the reference bearing plate by hexagon socket screws to position the tube shell base. The cantilever spring probe assembly is arranged on the reference positioning block, and the corresponding number is set according to the needs, and the corresponding position is determined with the reference positioning block to ensure that the COS is accurately pressed by the spring probe.

[0012] The beneficial effects of the present invention are:

[0013] 1. The present invention discloses a COS welding fixture for semiconductor lasers, comprising a bearing and positioning assembly and at least one cantilever spring probe assembly; the bearing and positioning assembly is used to bear and position the tube shell base; the cantilever spring probe assembly comprises at least one positioning rod, a compression spring corresponding to the positioning rod, at least one spring probe, a cantilever bracket and a locking piece; the positioning rod is arranged on the bearing and positioning assembly, and the positioning rod is covered with a compression spring; the compression spring is compressed between the bearing and positioning assembly and the cantilever bracket; the positioning rod passes through the cantilever bracket; the locking piece is used to limit the cantilever bracket to a certain distance from the bearing and positioning assembly; the spring probe is arranged on the cantilever bracket, and is used to press the COS on the solder provided on the tube shell base. The present invention is a COS welding fixture for semiconductor lasers, which can effectively prevent the displacement deviation of COS during the welding process and improve the positioning accuracy of COS. The fixture has accurate mechanical positioning and reliable quality, and can effectively realize the packaging welding process of all COS in a tube shell. The fixture has the characteristics of simple and compact structure, easy processing, economical and durable, and convenient installation and disassembly. The fixture improves the production efficiency of the process, saves costs and improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structural assembly of the present invention;

[0015] Figure 2 Schematic diagram of the anti-loosening COS state of the clamp of the present invention;

[0016] Figure 3 Schematic diagram of the clamp of the present invention in a COS state of compression;

[0017] In the accompanying drawings: 1-the first positioning piece of the tube shell, 2-the reference bearing plate, 3-the compression spring, 4-the positioning rod, 5-the reference positioning block, 6-the second positioning piece of the tube shell, 7-the cantilever bracket, 8-the bolt, 9-the spring probe, 10-the tube shell base, 11-COS. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the present invention is not limited to the following embodiments.

[0019] Embodiment 1:

[0020] See attached Figures 1 to 3A COS welding fixture for semiconductor lasers, comprising a bearing and positioning assembly and at least one cantilever spring probe assembly; the bearing and positioning assembly is used to bear and position a tube shell base 10; the cantilever spring probe assembly comprises at least one positioning rod 4, a compression spring 3 corresponding to the positioning rod 4, at least one spring probe 9, a cantilever bracket 7 and a locking member; the positioning rod 4 is arranged on the bearing and positioning assembly, and the positioning rod 4 is covered with a compression spring 3; the compression spring 3 is compressed between the bearing and positioning assembly and the cantilever bracket 7; the positioning rod 4 passes through the cantilever bracket 7; the locking member is used to limit the cantilever bracket 7 to a certain distance from the bearing and positioning assembly; the spring probe 9 is arranged on the cantilever bracket 7, and is used to press the COS 11 onto the solder provided on the tube shell base 10. As can be seen from the above structure, the tube shell base 10 is placed on the bearing positioning component and fixed in position; there are several pieces of solder on the tube shell base 10, and the COS11 to be welded is placed on the solder. In order to quickly and accurately weld the COS11 to the tube shell base 10 through solder, the COS11 must be pressed; each COS11 is pressed by a cantilever spring probe assembly, so that the pressing force of each COS11 can be adjusted separately; ensure that each COS11 is stably pressed; the spring probe 9 is set on the cantilever bracket 7, and when the cantilever bracket 7 moves downward, the spring probe 9 moves downward synchronously and presses on the COS11. The spring probe 9 is pressed on the COS11 to make the COS11 close to the solder; the positioning rod 4 passes through the cantilever bracket 7 to guide the movement of the cantilever bracket 7; after the spring probe 9 is pressed on the COS11, the compression spring 3 makes the cantilever bracket 7 tend to move away from the load-bearing positioning component, and cooperates with the locking piece to lock the position of the cantilever bracket 7 to ensure that the COS11 is reliably compressed; because the spring probe 9 has a certain elasticity, when the COS is welded at high temperature, the deformation stress formed between the COS and the spring probe 9 can be released through the expansion and contraction of the spring probe 9, effectively reducing the displacement deviation caused by thermal expansion during COS welding. The cantilever spring probe assembly improves the accuracy of mechanical positioning, and can effectively realize the positioning adjustment of a single COS in the tube shell and all COS welding. At the same time, it improves the production efficiency of the process, saves costs, and increases economic benefits.

[0021] Embodiment 2:

[0022] See attached Figures 1 to 3A COS welding fixture for semiconductor lasers, comprising a bearing and positioning assembly and at least one cantilever spring probe assembly; the bearing and positioning assembly is used to bear and position a tube shell base 10; the cantilever spring probe assembly comprises at least one positioning rod 4, a compression spring 3 corresponding to the positioning rod 4, at least one spring probe 9, a cantilever bracket 7 and a locking member; the positioning rod 4 is arranged on the bearing and positioning assembly, and the positioning rod 4 is covered with a compression spring 3; the compression spring 3 is compressed between the bearing and positioning assembly and the cantilever bracket 7; the positioning rod 4 passes through the cantilever bracket 7; the locking member is used to limit the cantilever bracket 7 to a certain distance from the bearing and positioning assembly; the spring probe 9 is arranged on the cantilever bracket 7, and is used to press the COS 11 onto the solder provided on the tube shell base 10. As can be seen from the above structure, the tube shell base 10 is placed on the bearing positioning component and fixed in position; there are several pieces of solder on the tube shell base 10, and the COS11 to be welded is placed on the solder. In order to quickly and accurately weld the COS11 to the tube shell base 10 through solder, the COS11 must be pressed; each COS11 is pressed by a cantilever spring probe assembly, so that the pressing force of each COS11 can be adjusted separately; ensure that each COS11 is stably pressed; the spring probe 9 is set on the cantilever bracket 7, and when the cantilever bracket 7 moves downward, the spring probe 9 moves downward synchronously and presses on the COS11. The spring probe 9 is pressed on the COS11 to make the COS11 close to the solder; the positioning rod 4 passes through the cantilever bracket 7 to guide the movement of the cantilever bracket 7; after the spring probe 9 is pressed on the COS11, the compression spring 3 makes the cantilever bracket 7 tend to move away from the load-bearing positioning component, and cooperates with the locking piece to lock the position of the cantilever bracket 7 to ensure that the COS11 is reliably compressed; because the spring probe 9 has a certain elasticity, when the COS is welded at high temperature, the deformation stress formed between the COS and the spring probe 9 can be released through the expansion and contraction of the spring probe 9, effectively reducing the displacement deviation caused by thermal expansion during COS welding. The cantilever spring probe assembly improves the accuracy of mechanical positioning, and can effectively realize the positioning adjustment of a single COS in the tube shell and all COS welding. At the same time, it improves the production efficiency of the process, saves costs, and increases economic benefits.

[0023] The positioning rod 4 is provided with a limiting portion for limiting the maximum distance of the cantilever bracket 7 from the load-bearing positioning assembly. As can be seen from the above structure, the positioning rod 4 is provided with a limiting portion, which can be a bolt head at the top of the positioning rod 4, to prevent the cantilever bracket 7 from detaching from the positioning rod 4 and limit the maximum distance of the cantilever bracket 7 from the load-bearing positioning assembly.

[0024] Embodiment three:

[0025] See attached Figures 1 to 3A COS welding fixture for semiconductor lasers, comprising a bearing and positioning assembly and at least one cantilever spring probe assembly; the bearing and positioning assembly is used to bear and position a tube shell base 10; the cantilever spring probe assembly comprises at least one positioning rod 4, a compression spring 3 corresponding to the positioning rod 4, at least one spring probe 9, a cantilever bracket 7 and a locking member; the positioning rod 4 is arranged on the bearing and positioning assembly, and the positioning rod 4 is covered with a compression spring 3; the compression spring 3 is compressed between the bearing and positioning assembly and the cantilever bracket 7; the positioning rod 4 passes through the cantilever bracket 7; the locking member is used to limit the cantilever bracket 7 to a certain distance from the bearing and positioning assembly; the spring probe 9 is arranged on the cantilever bracket 7, and is used to press the COS 11 onto the solder provided on the tube shell base 10. As can be seen from the above structure, the tube shell base 10 is placed on the bearing positioning component and fixed in position; there are several pieces of solder on the tube shell base 10, and the COS11 to be welded is placed on the solder. In order to quickly and accurately weld the COS11 to the tube shell base 10 through solder, the COS11 must be pressed; each COS11 is pressed by a cantilever spring probe assembly, so that the pressing force of each COS11 can be adjusted separately; ensure that each COS11 is stably pressed; the spring probe 9 is set on the cantilever bracket 7, and when the cantilever bracket 7 moves downward, the spring probe 9 moves downward synchronously and presses on the COS11. The spring probe 9 is pressed on the COS11 to make the COS11 close to the solder; the positioning rod 4 passes through the cantilever bracket 7 to guide the movement of the cantilever bracket 7; after the spring probe 9 is pressed on the COS11, the compression spring 3 makes the cantilever bracket 7 tend to move away from the load-bearing positioning component, and cooperates with the locking piece to lock the position of the cantilever bracket 7 to ensure that the COS11 is reliably compressed; because the spring probe 9 has a certain elasticity, when the COS is welded at high temperature, the deformation stress formed between the COS and the spring probe 9 can be released through the expansion and contraction of the spring probe 9, effectively reducing the displacement deviation caused by thermal expansion during COS welding. The cantilever spring probe assembly improves the accuracy of mechanical positioning, and can effectively realize the positioning adjustment of a single COS in the tube shell and all COS welding. At the same time, it improves the production efficiency of the process, saves costs, and increases economic benefits.

[0026] The positioning rod 4 is provided with a limiting portion for limiting the maximum distance of the cantilever bracket 7 from the load-bearing positioning assembly. As can be seen from the above structure, the positioning rod 4 is provided with a limiting portion, which can be a bolt head at the top of the positioning rod 4, to prevent the cantilever bracket 7 from detaching from the positioning rod 4 and limit the maximum distance of the cantilever bracket 7 from the load-bearing positioning assembly.

[0027] The positioning rod 4 is provided with a thread, and the thread is screwed on the threaded hole provided on the load-bearing positioning assembly to connect and fix the positioning rod 4 and the load-bearing positioning assembly. As can be seen from the above structure, the positioning rod 4 and the load-bearing positioning assembly are connected by threads, which is convenient for the installation and removal of the positioning rod 4 and the installation of the compression spring 3.

[0028] The locking member is a bolt 8; the rod of the bolt 8 passes through the cantilever bracket 7 and is screwed on the corresponding threaded hole on the load-bearing positioning assembly through a thread; the head of the bolt 8 limits the cantilever bracket 7 to a certain distance from the load-bearing positioning assembly. From the above structure, it can be seen that the bolt 8 adjusts the cantilever bracket 7 to a certain distance from the load-bearing positioning assembly by changing the depth of the rod screwed on the load-bearing positioning assembly, and finally ensures that the COS11 is reliably pressed by the spring probe 9.

[0029] The cantilever spring probe assembly has two positioning rods 4, so that the cantilever bracket 7 can only move linearly. From the above structure, it can be seen that each cantilever spring probe assembly has two positioning rods 4, and the two positioning rods 4 guide the cantilever bracket 7, so that the cantilever bracket 7 can only move linearly away from or close to the load-bearing positioning assembly, and the positioning accuracy is higher and more reliable.

[0030] The cantilever spring probe assembly has four spring probes 9 and is arranged at one end of the cantilever bracket 7. As can be seen from the above structure, the four spring probes 9 are pressed on the four corners of the COS 11, and the COS 11 is reliably pressed by the four spring probes 9.

[0031] There are fourteen cantilever spring probe assemblies, which are arranged in two rows in an interlaced manner, with seven cantilever spring probe assemblies in each row. As can be seen from the above structure, the number of cantilever spring probe assemblies required is determined according to the number of COS11.

[0032] The bearing and positioning assembly includes a first housing positioning member 1, a second housing positioning member 6, a reference bearing plate 2 and two reference positioning blocks 5; the reference bearing plate 2 is used to bear the housing base 10; the two reference positioning blocks 5 are fixed on the reference bearing plates 2 on both sides of the housing base 10; the first housing positioning member 1 and the second housing positioning member 6 are respectively fixed on the reference bearing plates 2 at the front and rear positions of the housing base 10; the first housing positioning member 1, the second housing positioning member 6 and the two reference positioning blocks 5 are used together to position the housing base 10; the cantilever spring probe assembly is arranged on the reference positioning block 5. As can be seen from the above structure, the first housing positioning member 1, the second housing positioning member 6 and the two reference positioning blocks 5 are fixed on the reference bearing plate 2 by hexagon socket screws to position the housing base 10. The cantilever spring probe assembly is arranged on the reference positioning block 5, and the corresponding number is set according to the needs, and the corresponding position is determined with the reference positioning block 5 to ensure that the COS11 is accurately pressed by the spring probe 9.

[0033] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A COS welding fixture for semiconductor lasers, characterized in that: The invention comprises a load-bearing positioning component and at least one cantilever spring probe component; the load-bearing positioning component is used to bear and position a tube shell base (10); the cantilever spring probe component comprises at least one positioning rod (4), a compression spring (3) corresponding to the positioning rod (4), at least one spring probe (9), a cantilever bracket (7) and a locking member; the positioning rod (4) is arranged on the load-bearing positioning component, and the positioning rod (4) is covered with a compression spring (3); the compression spring (3) is compressed between the load-bearing positioning component and the cantilever bracket (7) ; the positioning rod (4) passes through the cantilever bracket (7); the locking member is used to limit the cantilever bracket (7) to a position at a certain distance from the load-bearing positioning assembly; the spring probe (9) is arranged on the cantilever bracket (7) and is used to press the COS (11) onto the solder provided on the tube shell base (10); the locking member is a bolt (8); the rod of the bolt (8) passes through the cantilever bracket (7) and is screwed onto a corresponding threaded hole provided on the load-bearing positioning assembly through a thread; the head of the bolt (8) limits the cantilever bracket (7) to a position at a certain distance from the load-bearing positioning assembly The cantilever spring probe assembly is provided with two positioning rods (4) so ​​that the cantilever bracket (7) can only move linearly; the cantilever spring probe assembly has four spring probes (9) and is arranged at one end of the cantilever bracket (7); the cantilever spring probe assembly has fourteen spring probes, which are arranged in two rows and staggered, with seven spring probes in each row; the cantilever spring probe assembly includes a first positioning member (1) of the tube shell, a second positioning member (6) of the tube shell, a reference bearing plate (2) and two reference positioning blocks (5); the reference bearing plate (2) is used to support the tube shell base (10); the two reference positioning blocks (5) are fixed on the reference bearing plates (2) on both sides of the tube shell base (10); the tube shell first positioning member (1) and the tube shell second positioning member (6) are respectively fixed on the reference bearing plates (2) at the front and rear positions of the tube shell base (10); the tube shell first positioning member (1), the tube shell second positioning member (6) and the two reference positioning blocks (5) are used together to position the tube shell base (10); the cantilever spring probe assembly is arranged on the reference positioning block (5).

2. A COS welding fixture for semiconductor lasers according to claim 1, characterized in that: The positioning rod (4) is provided with a limiting portion for limiting the maximum distance of the cantilever bracket (7) away from the bearing positioning assembly.

3. The COS welding fixture for semiconductor laser according to claim 1, characterized in that: The positioning rod (4) is provided with a thread, and the thread is screwed onto a threaded hole provided on the bearing positioning assembly so that the positioning rod (4) and the bearing positioning assembly are connected and fixed.

Images