Optical module MPO end face polishing clamp and device

Abstract

The invention provides an optical module MPO end face polishing clamp which is provided with a first clamping position and a second clamping position, when a PCB and an MPO are clamped and fixed in the first clamping position and the second clamping position respectively, the distance between a receiving end FA and the MPO is smaller than the length of a first optical fiber, and the distance between the receiving end FA and the MPO is smaller than the length of a second optical fiber. And the distance between the transmitting end FA and the MPO is smaller than the length of the second optical fiber. According to the scheme, the end face of the MPO can be ground and polished without detaching the receiving end FA and the transmitting end FA of the optical module from the PCB; after the PCB is clamped and fixed in the first clamping position, the MPO is clamped and fixed in the second clamping position, and the end face of the MPO is ground and polished, the problem that part of devices of the optical module fail due to the fact that the first optical fiber and the second optical fiber are pulled can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing devices, and in particular to an optical module MPO end face polishing fixture and device. Background Art

[0002] During the production or use of optical modules, the MPO (Multi-fiber Push On) end faces are often scratched or dirty, causing some optical module products to be scrapped or reworked. One of the more common rework processes is to push the FA (fiber array) off the PCBA (Printed Circuit Board Assembly) and then polish the MPO end face. Since the PCBA and FA are bonded with UV glue, the viscosity is high after light curing, and it is difficult to separate them manually. In addition, the force is difficult to control during the separation process, which can easily damage other components such as silicon photonic chips, causing the product to be completely scrapped.

[0003] If the FA is not removed from the PCBA and the MPO end face is directly polished, it is easy to generate a pulling force on the optical fiber, causing micro-displacement of the FA on both sides, thereby causing the risk of device failure. Summary of the invention

[0004] Based on the above-mentioned problems existing in the prior art, the present invention aims to solve the technical problems that when repairing the MPO in the optical module in the prior art, if it is chosen to push the FA off the PCBA and then repair the MPO, it will be difficult to split the FA; and if it is chosen not to split the FA and directly repair the MPO, tensile stress will be generated on the optical fiber, thereby causing device failure.

[0005] The present invention provides an optical module MPO end face polishing fixture, the optical module comprises a PCB board, an MPO, a receiving end FA, a transmitting end FA, a first optical fiber and a second optical fiber, wherein the MPO, the receiving end FA and the transmitting end FA are all fixed on the PCB board, and the receiving end FA and the transmitting end FA are connected to the MPO through the first optical fiber and the second optical fiber respectively;

[0006] The optical module MPO end face polishing fixture has a first clamping position and a second clamping position. When the PCB board and the MPO are respectively clamped and fixed in the first clamping position and the second clamping position, the distance between the receiving end FA and the MPO is less than the length of the first optical fiber, and the distance between the transmitting end FA and the MPO is less than the length of the second optical fiber.

[0007] According to an embodiment of the present invention, the optical module MPO end surface polishing fixture includes a fixing frame and a first fixture component detachably arranged thereon, and the first fixture component includes:

[0008] Base;

[0009] A stopper, fixedly arranged on one side of the base;

[0010] A pressing block, movably arranged at the other side of the base, wherein the first clamping position is formed between the pressing block and the stop block;

[0011] The clamping driving member is used to drive the pressing block to approach or move away from the stop block.

[0012] According to one embodiment of the present invention, the optical module MPO end face polishing fixture also includes several groups of limit blocks, the number of the limit blocks in each group is two, the two limit blocks are respectively fixedly arranged on both sides of the base, and the distance between the two limit blocks is not less than the width or length of the PCB board.

[0013] According to an embodiment of the present invention, the outer edge of the PCB board has a plurality of grooves, and at least one of the limiting blocks is arranged corresponding to one of the grooves.

[0014] According to an embodiment of the present invention, a step surface is formed on one side of two of the limiting blocks in each group that are opposite to each other, so as to provide support for the PCB board placed in the first clamping position.

[0015] According to an embodiment of the present invention, the first clamp assembly further comprises a plurality of support columns fixedly disposed on the base, for providing support for the PCB board placed in the first clamping position, so that the PCB board is suspended relative to the base.

[0016] According to an embodiment of the present invention, the optical module MPO end surface polishing fixture further includes a special-shaped hanging piece detachably connected to the base, for hanging the first fixture assembly on the fixing frame.

[0017] According to an embodiment of the present invention, a waist-shaped groove is provided on the special-shaped suspension member, and a screw is inserted into the waist-shaped groove to achieve a detachable connection with the base.

[0018] According to an embodiment of the present invention, the optical module MPO end surface polishing fixture further includes a second fixture component, and the second fixture component includes:

[0019] A positioning sleeve having a positioning cavity whose shape matches the MPO shape, and the positioning cavity forms the second clamping position; a through slot is provided at the bottom of the fixing frame, and the positioning sleeve is detachably fixed in the through slot;

[0020] A tightening screw, a threaded hole is opened on the side wall of the positioning sleeve, and the top end of the tightening screw passes through the threaded hole and extends into the positioning cavity.

[0021] The present invention also provides an optical module MPO end face polishing device, which comprises:

[0022] The optical module MPO end face polishing fixture, and

[0023] A polishing machine is used to polish the end face of the MPO to be polished.

[0024] The optical module MPO end face polishing fixture and device provided by the present invention have the following beneficial effects:

[0025] (1) This solution does not require the receiving end FA and the transmitting end FA of the optical module to be removed from the PCB board, so that the grinding and polishing operation of the MPO end surface can be achieved, which is easy to operate and can avoid damage to the device when removing the receiving end FA and the transmitting end FA;

[0026] (2) Since the optical module MPO end face polishing fixture satisfies the requirement that when the PCB board and the MPO are respectively clamped and fixed in the first clamping position and the second clamping position, the distance between the receiving end FA and the MPO is less than the length of the first optical fiber, and the distance between the transmitting end FA and the MPO is less than the length of the second optical fiber, the problem of failure of some components of the optical module due to pulling on the first optical fiber and the second optical fiber can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural diagram of the optical module;

[0029] Figure 2 It is a structural schematic diagram of an optical module MPO end face polishing fixture provided by an embodiment of the present invention;

[0030] Figure 3 is a schematic structural diagram of a special-shaped suspension member in an embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the working state of an optical module MPO end face polishing fixture provided by an embodiment of the present invention;

[0032] Figure 5 is a schematic structural diagram of a polishing machine in an embodiment of the present invention;

[0033] Figure 6 It is a structural schematic diagram of a clamping table in an embodiment of the present invention;

[0034] Figure markings: 100-optical module; 101-PCB board; 1010-groove; 102-MPO; 103-receiving end FA; 104-transmitting end FA; 105-first optical fiber; 106-second optical fiber; 01-first clamping position; 02-second clamping position; 1-fixed frame; 10-through groove; 2-first clamp assembly; 21-base; 22-stop block; 23-pressure block; 24-clamping drive member; 25-limiting block; 250-step surface; 26-support column; 3-special-shaped suspension member; 30-waist groove; 4-second clamp assembly; 41-positioning sleeve; 42-tightening screw; 200-polishing machine; 201-housing; 202-polishing plate; 300-clamping table; 301-first matching groove; 302-second matching groove. DETAILED DESCRIPTION

[0035] The following descriptions of the embodiments refer to the attached drawings to illustrate specific embodiments in which the present invention can be implemented.

[0036] The present invention provides an optical module MPO end face polishing fixture, the structure of the optical module 100 is as follows Figure 1 As shown, it includes a PCB board 101, an MPO 102, a receiving end FA103, a transmitting end FA104, a first optical fiber 105 and a second optical fiber 106, wherein the MPO 102, the receiving end FA103 and the transmitting end FA104 are all fixed on the PCB board 101, and the receiving end FA103 and the transmitting end FA104 are connected to the MPO 102 through the first optical fiber 105 and the second optical fiber 106 respectively;

[0037] The optical module MPO end face polishing fixture has a first clamping position 01 and a second clamping position 02. When the PCB board 101 and the MPO102 are respectively clamped and fixed in the first clamping position 01 and the second clamping position 02, the distance between the receiving end FA103 and the MPO102 is less than the length of the first optical fiber 105, and the distance between the transmitting end FA104 and the MPO102 is less than the length of the second optical fiber 106.

[0038] Through the above design, the PCB board 101 and the MPO 102 can be clamped and fixed in the first clamping position 01 and the second clamping position 02 respectively, and then the end face of the MPO 102 can be polished and polished, without removing the receiving end FA103 and the transmitting end FA104 from the PCB board 101, which is convenient for operation and can avoid damage to the device when removing the receiving end FA103 and the transmitting end FA104; and, since this solution satisfies the requirements that the PCB board 101 and the MPO 102 are clamped and fixed in the first clamping position 01 and the second clamping position 02 respectively, When the PCB board 101 is clamped and fixed in the first clamping position 01, and the MPO102 is clamped and fixed in the second clamping position 02, and the end face of the MPO102 is ground and polished, the problem of failure of some components of the optical module 100 caused by pulling the first optical fiber 105 and the second optical fiber 106 can be avoided.

[0039] like Figure 2 The figure shows a schematic diagram of the structure of the optical module MPO end face polishing fixture. Specifically, the optical module MPO end face polishing fixture includes a fixed frame 1 and a first fixture assembly 2 detachably arranged thereon, the first fixture assembly 2 includes a base 21, a stopper 22, a pressure block 23 and a clamping drive 24, wherein the stopper 22 is fixedly arranged on one side of the base 21; the pressure block 23 is movably arranged on the other side of the base 21, and the first clamping position 01 is formed between the pressure block 23 and the stopper 22; the clamping drive 24 is used to drive the pressure block 23 to approach or move away from the stopper 22, thereby clamping or releasing the PCB board 101.

[0040] It can be understood that by detachably arranging the first clamp component 2 on the fixing frame 1, the PCB board 101 can be first clamped and fixed by the first clamp component 2, and then the first clamp component 2 and the fixing frame 1 can be detachably connected. Compared with directly clamping the PCB board 101 on the first clamp component 2 fixed on the fixing frame 1, it can avoid that the shape or structure of the fixing frame 1 itself affects the clamping of the optical module 100, such as certain structures of the optical module 100 colliding with the fixing frame 1, etc.

[0041] Preferably, the surfaces of the stopper 22 and the pressing block 23 facing each other are an inclined surface facing the base 21, so that when the PCB board 101 is fixed, the inclined surface can apply a force toward the base 21 to the PCB board, thereby preventing the PCB board 101 from escaping from the first clamping position 101 when the clamping drive 24 is working.

[0042] More preferably, the side wall of the base 21 is provided with a threaded hole, and the clamping drive 24 is a hand-tightening bolt, the top end of the hand-tightening bolt movably passes through the pressing block 23 and is threadedly connected with the threaded hole of the base 21, and the hand-tightening bolt is screwed in, so that the pressing block 23 can be driven close to the stopper 22, thereby clamping the PCB board 101. It should be noted that the selection of the clamping drive 24 as a hand-tightening bolt is only a preferred embodiment of the present invention. In other embodiments, the clamping drive 24 can also be a component with a telescopic function such as a cylinder.

[0043] Furthermore, in order to improve the accuracy of the placement of the optical module 100 on the base 21, the optical module MPO end face polishing fixture also includes several groups of limit blocks 25, the number of the limit blocks 25 in each group is two, the two limit blocks 25 are respectively fixedly arranged on both sides of the base 21, and the distance between the two limit blocks 25 is not less than the width or length of the PCB board 101.

[0044] Furthermore, the outer edge of the PCB board 101 has a plurality of grooves 1010, and at least one of the limit blocks 25 is disposed corresponding to one of the grooves 1010. Preferably, in this embodiment, each side of the PCB board 101 has one groove 1010, and two limit blocks 25 are disposed corresponding to two grooves 1010, respectively.

[0045] It can be understood that the limiting block 25 can cooperate with the groove 1010 so that the clamping drive member 24 can pre-position the PCB board 101 before fastening the PCB board 101 .

[0046] In this embodiment, the first clamp assembly 2 also includes a plurality of support columns 26 fixedly disposed on the base 21, for providing support for the PCB board 101 placed in the first clamping position 01, so that the PCB board 101 is suspended relative to the base 21, so as to avoid the PCB board 101 being unable to be stably placed on the base 21 due to the uneven surface.

[0047] Preferably, in order to improve the reliability of positioning the PCB board 101 by the first clamp assembly 2 while reducing the number of the support columns 26 to simplify the structure of the first clamp assembly 2, a step surface 250 is provided on the side opposite to each other of the two limit blocks 25 in each group to provide support for the PCB board 101 placed in the first clamping position 01.

[0048] In this embodiment, the optical module MPO end face polishing fixture also includes a special-shaped suspension member 3 detachably connected to the base 21, which is used to hang the first fixture assembly 2 on the fixing frame 1, thereby quickly realizing the detachable connection between the first fixture assembly 2 and the fixing frame 1.

[0049] Preferably, a waist-shaped groove 30 is provided on the special-shaped suspension member 3 , and a screw is inserted into the waist-shaped groove 30 to achieve a detachable connection with the base 21 .

[0050] It can be understood that the waist-shaped groove 30 can adjust the hanging height of the first clamp component 2 on the fixing frame 1, so as to be compatible with the optical modules 100 of different length specifications.

[0051] In this embodiment, the optical module MPO end face polishing fixture also includes a second fixture assembly 4, and the second fixture assembly 4 includes a positioning sleeve 41 and a tightening screw 42, wherein the positioning sleeve 41 has a positioning cavity whose shape matches the shape of the MPO102, and the positioning cavity forms the second clamping position 02, and the end of the MPO102 to be polished can pass through the positioning cavity and pass out from the bottom of the positioning cavity; a through groove 10 is provided at the bottom of the fixing frame 1, and the positioning sleeve 41 is detachably fixed in the through groove 10; a threaded hole is provided on the side wall of the positioning sleeve 41, and the top end of the tightening screw 42 passes through the threaded hole and extends into the positioning cavity. Preferably, the fixing frame 1 is an L-shaped fixing frame, so that the first clamping position 01 and the second clamping position 02 are distributed on the two arms of the L-shaped fixing frame, so as to realize the reasonable arrangement of the first clamping position 01 and the second clamping position 02.

[0052] It should be noted that designing the second clamp assembly 4 to include the positioning sleeve 41 and the tightening screw 42 is only a preferred embodiment of the present solution. In other embodiments, the second clamp assembly 4 can also be configured into other structural forms, such as two clamping blocks that can be close to or away from each other.

[0053] The present invention also provides an optical module MPO end face polishing device, which includes the optical module MPO end face polishing fixture and a polishing machine 200, wherein the polishing machine 200 is used to polish the end face to be polished of the MPO 102.

[0054] like Figure 5 The structure diagram of the polishing machine 200 is shown. Specifically, the polishing machine 200 includes a housing 201 and a polishing disc 202. The polishing machine 200 can be handheld to polish the end of the MPO 102 to be polished, and the polishing operation is relatively convenient.

[0055] Preferably, the housing 201 is detachably connected to the bottom end of the fixing frame 1 (not shown in the figure). After the MPO 102 is clamped in the positioning sleeve 41, the polishing machine 200 is started to polish the end face of the MPO 102. In particular, since the housing 201 is connected to the fixing frame 1 as a whole, it is difficult to adjust the feed amount of the polishing disc 202 by moving the housing 201. Therefore, when the housing 201 is connected to the bottom of the fixing frame 1, the feed amount of the polishing disc 202 needs to be adjustable. For example, a feed amount adjustment component can be set in the housing 201 to adjust the feed amount of the polishing disc 202.

[0056] Furthermore, the optical module MPO end surface polishing device also includes a clamping table 300, such as Figure 6 The figure shows a schematic diagram of the structure of the clamping table 300, wherein the upper surface of the clamping table 300 is provided with a first matching groove 301 and a second matching groove 302 which respectively match the appearance of the base 21 and the special-shaped suspension component 3, so as to realize the horizontal placement of the PCB board 101 when the first clamp assembly 2 is clamped, thereby improving the placement stability of the base 21 (the special-shaped suspension component 3 is installed on the back of the base 21).

[0057] In order to facilitate the understanding of this scheme, the following Figure 1-Figure 6 The working principle of the present invention is described in detail:

[0058] In step 1, the base 21 with the special-shaped suspension member 3 is placed on the clamping table 300, and the PCB board 101 of the optical module 100 is clamped and fixed by the first clamp assembly 2, so that the clamping work of the PCB board 101 is carried out in a horizontal plane.

[0059] In step 2, the first fixture assembly 2 clamped with the PCB board 101 is hung on the fixing frame 1 through the special-shaped hanging member 3 .

[0060] Step 3: Place the MPO 102 of the optical module 100 in the positioning cavity of the positioning sleeve 41, and allow the end of the MPO 102 to be polished to pass through the positioning sleeve 41 to be exposed from the bottom of the positioning sleeve 41, and tighten the tightening screw 42 to fix the MPO 102.

[0061] Step 4: start the polishing machine 200 to grind and polish the end surface of the MPO 102, and then remove the PCB board 101 of the optical module 100 and the MPO 102 from the first fixture assembly 2 and the second fixture assembly 4 respectively.

[0062] Compared with the prior art, the present invention provides an optical module MPO end face polishing fixture and device. It is not necessary to remove the receiving end FA103 and the transmitting end FA104 of the optical module 100 from the PCB board 101, so that the grinding and polishing operation of the end face of the MPO102 can be achieved. The operation is convenient and damage to the device when the receiving end FA103 and the transmitting end FA104 are removed can be avoided. In addition, since the optical module MPO end face polishing fixture meets the requirements that when the PCB board 101 and the MPO102 are respectively clamped and fixed in the first clamping position 01 and the second clamping position 02, the distance between the receiving end FA103 and the MPO102 is less than the length of the first optical fiber 105, and the distance between the transmitting end FA104 and the MPO102 is less than the length of the second optical fiber 106, the problem of failure of some components of the optical module 100 caused by pulling the first optical fiber 105 and the second optical fiber 106 can be avoided.

[0063] It should be noted that although the present invention is disclosed as above by specific embodiments, the above embodiments are not intended to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. An optical module MPO end face polishing fixture, the optical module (100) comprising a PCB board (101), an MPO (102), a receiving end FA (103), a transmitting end FA (104), a first optical fiber (105) and a second optical fiber (106), wherein: The MPO (102), the receiving end FA (103) and the transmitting end FA (104) are all fixed on the PCB board (101), and the receiving end FA (103) and the transmitting end FA (104) are connected to the MPO (102) via the first optical fiber (105) and the second optical fiber (106), respectively; characterized in that: The optical module MPO end face polishing fixture has a first clamping position (01) and a second clamping position (02); when the PCB board (101) and the MPO (102) are respectively clamped and fixed in the first clamping position (01) and the second clamping position (02), the distance between the receiving end FA (103) and the MPO (102) is smaller than the length of the first optical fiber (105), and the distance between the transmitting end FA (104) and the MPO (102) is smaller than the length of the second optical fiber (106).

2. The optical module MPO end face polishing fixture according to claim 1, characterized in that: The invention comprises a fixing frame (1) and a first clamp assembly (2) detachably arranged thereon, wherein the first clamp assembly (2) comprises: Base (21); A stopper (22) is fixedly arranged on one side of the base (21); A pressing block (23) is movably arranged on the other side of the base (21), and the first clamping position (01) is formed between the pressing block (23) and the stop block (22); The clamping driving member (24) is used to drive the pressing block (23) to move closer to or away from the stop block (22).

3. The optical module MPO end face polishing fixture according to claim 2, characterized in that: It also includes a plurality of groups of limit blocks (25), each group including two limit blocks (25), the two limit blocks (25) being respectively fixedly arranged on two sides of the base (21), and the distance between the two limit blocks (25) being no less than the width or length of the PCB board (101).

4. The optical module MPO end face polishing fixture according to claim 3, characterized in that: The outer edge of the PCB board (101) has a plurality of grooves (1010), and at least one of the limit blocks (25) is arranged corresponding to one of the grooves (1010).

5. The optical module MPO end surface polishing fixture according to claim 3, characterized in that: The two limiting blocks (25) in each group are provided with a step surface (250) on one side opposite to each other, so as to provide support for the PCB board (101) placed in the first clamping position (01).

6. The optical module MPO end surface polishing fixture according to claim 2, characterized in that: The first clamp assembly (2) further comprises a plurality of support columns (26) fixedly arranged on the base (21) for providing support for the PCB board (101) placed in the first clamping position (01), so that the PCB board (101) is suspended relative to the base (21).

7. The optical module MPO end surface polishing fixture according to claim 2, characterized in that: It also comprises a special-shaped hanging piece (3) detachably connected to the base (21) and used for hanging the first clamp assembly (2) on the fixing frame (1).

8. The optical module MPO end surface polishing fixture according to claim 7, characterized in that: The special-shaped suspension member (3) is provided with a waist-shaped groove (30), and a screw is inserted into the waist-shaped groove (30) to achieve a detachable connection with the base (21).

9. The optical module MPO end surface polishing fixture according to claim 2, characterized in that: The invention also comprises a second clamp assembly (4), wherein the second clamp assembly (4) comprises: A positioning sleeve (41) having a positioning cavity whose shape matches the outer shape of the MPO (102), wherein the positioning cavity forms the second clamping position (02); a through slot (10) is provided at the bottom of the fixing frame (1), and the positioning sleeve (41) is detachably fixedly disposed in the through slot (10); A tightening screw (42), a threaded hole is formed on the side wall of the positioning sleeve (41), and the top end of the tightening screw (42) passes through the threaded hole and extends into the positioning cavity.

10. An optical module MPO end face polishing device, characterized in that: include: An optical module MPO end face polishing fixture as claimed in any one of claims 1 to 9, and The polishing machine (200) is used to polish the end surface of the MPO (102) to be polished.

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