Optical device alignment welding clamp

Abstract

The utility model discloses an optical device alignment welding fixture, which belongs to the field of optical communication module manufacturing and comprises a first clamping plate, a second clamping plate and a third clamping plate. The shape and the size of the second clamping plate are matched with those of the first clamping plate, and a space for containing a welded part is formed between the second clamping plate and the first clamping plate; one end of the second clamping plate is movably connected with the first clamping plate; the locking assembly is used for keeping the first clamping plate close to the second clamping plate; a clamping part is arranged between the first clamping plate and the second clamping plate and abuts against a welded part, so that the welded part is limited and fixed between the first clamping plate and the second clamping plate; the first clamping plate and the second clamping plate are matched with the locking assembly to achieve the clamping function of the optical device, the structure is simple, the number of movable parts is small, frequent maintenance is not needed, and accurate positioning of the optical device in the clamp can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of optical communication module manufacturing, more specifically, especially relates to a kind of optical device alignment welding fixture. BACKGROUND

[0002] Flexible board (i.e. flexible printed circuit board, FPC) is a kind of circuit board with high reliability, excellent electrical performance, flexibility and chemical stability, which is made of polyimide or polyester film as base material; compared with traditional rigid circuit board, the biggest advantage of flexible board is its flexibility, which enables it to realize complex circuit layout in limited space, greatly improving the design freedom of electronic products.

[0003] In the photoelectric conversion module assembly production process, optical device and optical module PCB board are connected through flexible board; flexible board is small in volume, light in weight, and can be bent with a certain degree of freedom, which can reduce the influence of inductance on communication signal, and the welding quality of the flexible board of the optical device is the key to determine the performance of the module.

[0004] The welding method used in the past is to directly fix the optical device and the optical module PCB board on the welding platform through assembly, and the welding surface on one side of the optical device is welded, and the welding surface on the other side of the optical device needs to be welded after reassembly and positioning, which is complex; after long-term clamping production, the key components are prone to looseness, and frequent maintenance is required, which not only causes the optical device and the PCB board to be unable to be accurately positioned on the fixture, affecting the welding quality and causing a large amount of rework; and the positioning of the optical device relies on the insertion of the ceramic rod into the ceramic sleeve of the device, which easily causes pollution of the pin end face of the optical device, resulting in the need to add a process of cleaning the pin end face subsequently. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the technical problems that the positioning steps of optical device and PCB board on the existing fixture are complex, the positioning accuracy is easily affected, and the welding quality is poor, and proposes an optical device alignment welding fixture.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] An optical device alignment welding fixture, comprising:

[0008] A first clamping plate, which is in the form of a strip-shaped plate structure;

[0009] A second clamping plate, which is in the form of a strip-shaped plate structure; One end of the second clamping plate is movably connected to the first clamping plate, so that the second clamping plate and the first clamping plate can move open and close.

[0010] A locking assembly is arranged at the end of the first clamping plate and the end of the second clamping plate, and is used to keep the first clamping plate and the second clamping plate close to each other;

[0011] The first clamping plate and the second clamping plate are provided with a clamping part, which is in abutment with the welded part, so that the welded part is limited and fixed between the first clamping plate and the second clamping plate.

[0012] Further, the clamping part comprises:

[0013] A U-shaped groove is arranged on the plate surface of the first clamping plate and is close to the end of the first clamping plate; the opening of the U-shaped groove faces the second clamping plate, and the opening direction is perpendicular to the plate surface of the first clamping plate; the welded part is clamped in the opening of the U-shaped groove;

[0014] A first stop block is arranged on the plate surface of the first clamping plate and is located on the side of the first clamping plate where the U-shaped groove is located;

[0015] A second stop block is arranged on the plate surface of the second clamping plate and is located on the side of the second clamping plate close to the first stop block; the second stop block corresponds in position to the first stop block, and the second stop block and the first stop block abut against the two sides of the welded part respectively.

[0016] Further, a hinge seat is arranged on the first clamping plate, and the hinge seat is located at one end of the first clamping plate close to the U-shaped groove;

[0017] A hinge head is arranged on the second clamping plate and is located at one end of the second clamping plate close to the second stop block; the hinge head is hingedly connected in the hinge seat, so that the first clamping plate and the second clamping plate rotate relative to each other with the hinge seat as the rotation point.

[0018] Further, the locking assembly comprises:

[0019] A magnetic block is arranged at one end of the first clamping plate away from the hinge seat;

[0020] A magnetic groove is arranged at one end of the second clamping plate away from the hinge head, and the magnetic block is in close contact with the magnetic groove.

[0021] Further, the edges of the plate surface of the first clamping plate are respectively provided with first clamping grooves, and the edges of the plate surface of the second clamping plate are respectively provided with third clamping grooves; the first clamping grooves correspond in position to the third clamping grooves, and the first clamping plate is clamped and fixed on an external operation platform through the first clamping grooves, and the second clamping plate is clamped and fixed on the external operation platform through the third clamping grooves.

[0022] Further, edges of the first clamping plate surface are respectively provided with first grooves, and edges of the second clamping plate surface are respectively provided with second grooves; the first grooves and the second grooves correspond to positions of the clamping portions and are used for accommodating external blocking members located above the welded members and pressing the welded members.

[0023] Further, the first clamping plate and the second clamping plate are both provided with a plurality of mounting holes on plate surfaces thereof, which are used for connecting auxiliary connecting members of external laser welding equipment.

[0024] The optical device alignment welding clamp provided by the application adopts a first clamping plate and a second clamping plate to cooperate with a locking assembly to realize the clamping function of the optical device, can complete positioning and calibration before the optical device is loaded on an external operation platform, thereby facilitating quick replacement of a welding surface in a welding process; and the optical device alignment welding clamp has a simple structure, a small number of movable components, and no need for frequent maintenance, and can guarantee accurate positioning of the optical device and the PCB in the clamp. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a schematic diagram of the overall structure of an optical device alignment welding clamp provided in an embodiment of the application;

[0026] Figure 2 FIG. 1 is a schematic diagram of the overall structure of an optical device alignment welding clamp provided in an embodiment of the application;

[0027] Figure 3 FIG. 2 is a schematic diagram of the structure of a first clamping plate in an embodiment of the application;

[0028] Figure 4 FIG. 3 is a schematic diagram of the structure of a second clamping plate in an embodiment of the application;

[0029] Figure 5 FIG. 4 is a schematic diagram of the positional relationship between an optical device alignment welding clamp, an optical device, and a PCB provided in an embodiment of the application.

[0030] The marks in the figure are as follows:

[0031] 1, first clamping plate; 11, first clamping slot; 12, second clamping slot; 13, first groove; 14, hinge base; 2, second clamping plate; 21, third clamping slot; 22, fourth clamping slot; 23, second groove; 24, hinge head; 3, locking assembly; 31, magnetic block; 32, magnetic slot; 4, clamping portion; 41, U-shaped slot; 42, first stop block; 43, second stop block; 5, mounting hole. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0033] It should be noted that all the direction indications (such as up, down, left, right, front, back, and the like) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the direction indications also change accordingly.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In addition, if the present application embodiments involve "first", "second" and the like, the "first", "second" and the like are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. For example, "A and / or B" includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0036] In the present embodiment, the welded parts are optical devices, flexible boards connected with the optical devices, and PCB boards, and the external operation platform is a welding platform; please refer to Figures 1 to 5 The optical device alignment welding fixture provided by the embodiment of the present application can be used to clamp and stabilize the optical device, and then complete the positioning between the optical device, the PCB board and the flexible board. Then, the optical device alignment welding fixture is loaded on the welding platform to realize the stable connection between the optical device and the platform; please refer toFigure 1 With Figure 2 The optical device alignment welding fixture provided by the present application comprises a first clamping plate 1, a second clamping plate 2 and a locking assembly 3. In the embodiment, the first clamping plate 1 is in the form of a strip-shaped plate, and the second clamping plate 2 is in a shape and size suitable for the first clamping plate 1. The second clamping plate 2 is arranged in parallel with the first clamping plate 1, and a space capable of accommodating the optical device, a flexible plate and a PCB plate is formed between the second clamping plate 2 and the first clamping plate 1. In actual loading, the optical device, the PCB plate and the flexible plate are connected between the first clamping plate 1 and the second clamping plate 2. The first clamping plate 1 and the second clamping plate 2 are used to fix the optical device, so that the optical device and the PCB plate and the flexible plate connected thereto are in a correct angle after being loaded on a welding platform, thereby ensuring the subsequent welding precision. One end of the second clamping plate 2 is movably connected with the first clamping plate 1, so that the second clamping plate 2 and the first clamping plate 1 can move relative to each other, thereby realizing the opening and closing effect of the optical device alignment welding fixture. When the second clamping plate 2 is away from the first clamping plate 1, the optical device alignment welding fixture is in an open state, thereby facilitating the disassembly and assembly of the optical device, the PCB plate and the flexible plate. When the second clamping plate 2 is close to the first clamping plate 1, the optical device alignment welding fixture is in a closed state, thereby being capable of stably clamping the optical device. The locking assembly 3 is arranged at the end of the first clamping plate 1 and the second clamping plate 2. When the optical device is clamped and fixed, the locking assembly 3 can make the first clamping plate 1 and the second clamping plate 2 close to each other, thereby avoiding the accidental opening of the optical device alignment welding fixture and the deviation of the welding surface of the optical device. For the convenience of description, the “optical device alignment welding fixture” is collectively referred to as “welding fixture” hereinafter.

[0037] Further, the length of the first clamping plate 1 matches the length of the second clamping plate 2, and the length of the first clamping plate 1 is greater than the length of the optical device connected with the PCB plate, so that the optical device and the PCB plate can be covered between the first clamping plate 1 and the second clamping plate 2. Since the optical device and the PCB plate are connected on the same axis, the length of the photoelectric conversion module formed by the connection is relatively long, and the PCB plate is easy to deviate when being impacted by the outside, thereby finally affecting the welding quality of the flexible plate. By using the above design, the first clamping plate 1 and the second clamping plate 2 can provide protection for the optical device and the PCB plate from the outside, thereby effectively avoiding the collision and damage of the optical device, the PCB plate and the flexible plate during the welding process, and achieving the effect of improving the yield of finished products.

[0038] In the above technical solution, a clamping portion 4 is arranged between the first clamping plate 1 and the second clamping plate 2. The clamping portion 4 is in contact with the optical device and limits and fixes the optical device between the first clamping plate 1 and the second clamping plate 2. The clamping portion 4 is connected with the optical fiber plug of the optical device and abuts against both sides of the optical device, so that the optical device is positioned between the first clamping plate 1 and the second clamping plate 2. As an embodiment of the present application, please refer to Figure 3 With Figure 4The clamping part 4 comprises a U-shaped groove 41, a first stopper 42 and a second stopper 43. The U-shaped groove 41 is arranged on the inner side of the first clamping plate 1 and close to the end of the first clamping plate 1. The opening of the U-shaped groove 41 is directed towards the second clamping plate 2 and the opening direction is perpendicular to the plate surface of the first clamping plate 1. It can be understood that the opening size of the U-shaped groove 41 is matched with the outer diameter of the optical device fiber plug, so that the optical device fiber plug can be clamped in the U-shaped groove 41. After the optical device is connected in the U-shaped groove 41, the axis direction is parallel to the first clamping plate 1, so that the PCB plate connected with the optical device is also parallel to the first clamping plate 1. The optical device realizes the positioning effect in the welding fixture. The first stopper 42 is arranged on the plate surface of the first clamping plate 1 and located on the side of the first clamping plate 1 where the U-shaped groove 41 is arranged. The first stopper 42 corresponds to the position of the shell of the optical device. After the optical device fiber plug is clamped in the U-shaped groove 41, the shell of the optical device is in contact with the first stopper 42. The second stopper 43 is arranged on the plate surface of the second clamping plate 2 and corresponds to the position of the first stopper 42. When the first clamping plate 1 is close to the second clamping plate 2, the first stopper 42 and the second stopper 43 are matched and abut against the shells on both sides of the optical device, respectively. The optical device realizes the stable clamping effect in the welding fixture. The design of the clamping part 4 can realize the positioning and fixing of the optical device and the PCB plate on the welding fixture. Subsequently, the welding fixture is directly loaded on the welding platform, so that the welding surface of the optical device is located at the correct welding position. The step of adjusting and assembling the optical device on the welding platform is optimized, and the processing efficiency is greatly improved. Moreover, the optical device positioning is realized by the side clamping mode. The clamping part 4 only contacts with the outer surface of the optical device. Compared with the traditional technology of positioning by inserting the ceramic rod into the ceramic sleeve, the pin end surface can be effectively prevented from being polluted.

[0039] As an embodiment of the present application, the first clamping plate 1 is provided with a hinge base 14, which is located at one end of the first clamping plate 1 close to the U-shaped groove 41. The second clamping plate 2 is provided with a hinge head 24, which is located at one end of the second clamping plate 2 close to the second stopper 43. The hinge head 24 is hingedly connected with the hinge base 14, so that the first clamping plate 1 and the second clamping plate 2 can rotate relative to each other with the hinge base 14 as the rotation point, thereby enabling the welding fixture to be switched between the open state and the closed state. When the optical device is loaded, the welding fixture is in the open state. After the optical device is connected to the clamping part 4, the second clamping plate 2 is rotated to be close to the first clamping plate 1 until the clamping part 4 forms a stable clamping on the optical device, and the welding fixture is changed to the closed state. It can be understood that the first clamping plate 1 and the second clamping plate 2 can also adopt other connection modes capable of realizing the relative rotation effect, such as pin shaft connection.

[0040] As an embodiment of the present application, the locking assembly 3 comprises a magnetic block 31 and a magnetic groove 32; the magnetic block 31 is arranged on the first clamping plate 1 at an end away from the hinge base 14; the magnetic groove 32 is arranged on the second clamping plate 2 at an end away from the hinge head 24; since the first clamping plate 1 and the second clamping plate 2 are matched in length, after the optical device is placed on the clamping part 4, in the process of switching the welding fixture from the open state to the closed state, the second clamping plate 2 drives the magnetic groove 32 to rotate close to the first clamping plate 1, and the magnetic block 31 can finally be connected in the magnetic groove 32, and due to the mutual attraction of the magnetic block 31 and the magnetic groove 32, the magnetic block 31 can be kept close to the magnetic groove 32, thereby achieving the technical effect of continuously clamping the optical device by the welding fixture; it can be understood that the locking assembly 3 can also use other locking structures such as a lock catch structure to avoid relative rotation between the first clamping plate 1 and the second clamping plate 2.

[0041] As a preferred embodiment of the present application, the two side edges of the surface of the first clamping plate 1 are respectively provided with a first clamping groove 11 and a second clamping groove 12; the two side edges of the surface of the second clamping plate 2 are respectively provided with a third clamping groove 21 and a fourth clamping groove 22; wherein the first clamping groove 11 and the third clamping groove 21 correspond in position; in the process of loading the welding fixture onto the welding platform, the first clamping plate 1 is clamped to the corresponding position on the welding platform through the first clamping groove 11, and the second clamping plate 2 is clamped to the corresponding position on the welding platform through the third clamping groove 21, thereby realizing the positioning between the welding fixture and the welding platform; the second clamping groove 12 and the fourth clamping groove 22 correspond in position; when the processing of one side of the optical device is completed, and the other welding surfaces need to be processed on the other side of the optical device, the welding fixture is removed from the welding platform, the first clamping plate 1 is clamped to the corresponding position on the welding platform through the second clamping groove 12, and the second clamping plate 2 is clamped to the corresponding position on the welding platform through the fourth clamping groove 22, thereby completing the repositioning between the welding fixture and the welding platform.

[0042] As a preferred embodiment of the present application, the two side edges of the surface of the first clamping plate 1 are respectively provided with a first clamping groove 11 and a second clamping groove 12; the two side edges of the surface of the second clamping plate 2 are respectively provided with a third clamping groove 21 and a fourth clamping groove 22; wherein the first clamping groove 11 and the third clamping groove 21 correspond in position; in the process of loading the welding fixture onto the welding platform, the first clamping plate 1 is clamped to the corresponding position on the welding platform through the first clamping groove 11, and the second clamping plate 2 is clamped to the corresponding position on the welding platform through the third clamping groove 21, thereby realizing the positioning between the welding fixture and the welding platform; the second clamping groove 12 and the fourth clamping groove 22 correspond in position; when the processing of one side of the optical device is completed, and the other welding surfaces need to be processed on the other side of the optical device, the welding fixture is removed from the welding platform, the first clamping plate 1 is clamped to the corresponding position on the welding platform through the second clamping groove 12, and the second clamping plate 2 is clamped to the corresponding position on the welding platform through the fourth clamping groove 22, thereby completing the repositioning between the welding fixture and the welding platform.

[0043] As a preferred embodiment of the present application, a plurality of mounting holes 5 are arranged on the surface of the first clamping plate 1 and the second clamping plate 2, and the mounting holes 5 are used to install auxiliary connecting members, so as to facilitate the subsequent installation of laser welding equipment around the welding fixture.

[0044] The application provides a light device alignment welding clamp which adopts a first clamping plate 1, a second clamping plate 2 and a locking assembly 3 to realize the clamping function of the light device, can complete positioning and calibration before the light device is loaded on a welding platform, thereby facilitating quick replacement of a welding surface in the welding process; and the light device alignment welding clamp is simple in structure, has a small number of movable components, does not need frequent maintenance and can guarantee accurate positioning of the light device and the PCB on the clamp.

[0045] The above merely describes a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An optical device alignment and soldering fixture, characterized by, The utility model relates to a welding jig for laser welding, which comprises: a first clamping plate in the shape of a strip plate; a second clamping plate in the shape and size matching the first clamping plate, which is arranged in parallel with the first clamping plate and forms a space for accommodating the welded piece between the first clamping plate and the second clamping plate; one end of the second clamping plate is movably connected with the first clamping plate, so that the second clamping plate and the first clamping plate can move away from or close to each other; a locking assembly arranged at the end of the first clamping plate and the end of the second clamping plate, which is used to keep the first clamping plate and the second clamping plate close to each other. A clamping part is arranged between the first clamping plate and the second clamping plate, which abuts against the welded piece and limits and fixes the welded piece between the first clamping plate and the second clamping plate.

2. The photonic device alignment and bonding fixture of claim 1, wherein, The clamping part comprises: a U-shaped groove arranged on the surface of the first clamping plate and close to the end of the first clamping plate, the opening of the U-shaped groove faces the second clamping plate, and the opening direction is perpendicular to the surface of the first clamping plate, and the welded piece is clamped in the opening of the U-shaped groove; a first stopper arranged on the surface of the first clamping plate and located on the side of the first clamping plate where the U-shaped groove is located; a second stopper arranged on the surface of the second clamping plate and located on the side of the second clamping plate close to the first stopper, the second stopper corresponds to the position of the first stopper, and the second stopper and the first stopper abut against the two sides of the welded piece respectively.

3. The photonic device alignment and bonding fixture of claim 2, wherein, A hinge seat is arranged on the first clamping plate, which is located at one end of the first clamping plate close to the U-shaped groove; a hinge head is arranged on the second clamping plate, which is located at one end of the second clamping plate close to the second stopper, and the hinge head is hingedly connected in the hinge seat, so that the first clamping plate and the second clamping plate rotate relative to each other with the hinge seat as the rotation point.

4. The photonic device alignment and bonding fixture of claim 3, wherein, The locking assembly comprises: a magnetic block arranged at one end of the first clamping plate away from the hinge seat; a magnetic groove arranged at one end of the second clamping plate away from the hinge head, and the magnetic block is tightly attached in the magnetic groove.

5. The photonic device alignment and bonding fixture of claim 1, wherein, The edges of the surface of the first clamping plate are respectively provided with first clamping grooves, and the edges of the surface of the second clamping plate are respectively provided with third clamping grooves; the first clamping grooves correspond to the positions of the third clamping grooves, and the first clamping plate and the second clamping plate are clamped and fixed on an external operation platform through the first clamping grooves and the third clamping grooves.

6. The photonic device alignment and bonding fixture of claim 1, wherein, The edges of the surface of the first clamping plate are respectively provided with first recesses, and the edges of the surface of the second clamping plate are respectively provided with second recesses; the first recesses, the second recesses and the clamping part correspond to each other in position, which are used to accommodate an external blocking piece above the welded piece and press the welded piece.

7. The photonic device alignment and bonding fixture of claim 1, wherein, A plurality of mounting holes are arranged on the surfaces of the first clamping plate and the second clamping plate, which are used to connect auxiliary connecting pieces of an external laser welding device.

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