Protective cover mounting assembly in optical module, mounting method of protective cover mounting assembly and dispensing equipment

Abstract

The invention provides a mounting assembly for a protective cover in an optical module, a mounting method of the mounting assembly and dispensing equipment. The mounting assembly for the protective cover in the optical module comprises a circuit board carrier and a mounting cover plate, the circuit board carrier is provided with at least two accommodating grooves; the mounting cover plate is connected with the circuit board carrier, the mounting cover plate is provided with a pressing plate and a main body, the main body is provided with at least two limiting cavities, and the limiting cavities and the containing grooves are arranged in a one-to-one correspondence mode; and the pressing plate is movably connected to the main body and is used for applying an acting force close to the circuit board to the protective cover. Therefore, the circuit board carrier is provided with a plurality of accommodating grooves, and the mounting cover plate is provided with a plurality of limiting cavities, so that a plurality of protective covers can be mounted at the same time, and the mounting efficiency of the protective covers is improved; meanwhile, by arranging the limiting cavity, the protective cover can be limited and positioned, and the probability of bumping the gold wire of the optical device is reduced; besides, acting force is applied to the protective cover through the pressing plate, so that the protective cover can be quickly pressed, the flatness of the protective cover is ensured, and the use performance of the optical module is further improved.

Description

Technical Field

[0001] This invention relates to the field of optical module mounting technology, specifically to a protective cover mounting component for an optical module, its mounting method, and dispensing equipment. Background Technology

[0002] When assembling protective covers for high-speed optical modules, adhesive needs to be applied to both sides of the printed circuit board assembly (PCBA) separately, and the protective covers need to be mounted separately. During the mounting process, it is necessary to wait for the adhesive on one side to cure before mounting the other side, which is inefficient; moreover, the mounting of the protective covers is very prone to unevenness, which increases the risk of damage to the optical module. Summary of the Invention

[0003] In view of this, the present invention aims to provide a protective cover mounting component for an optical module and its mounting method and dispensing equipment, so as to solve the problems of uneven mounting and low mounting efficiency of the protective cover in the prior art.

[0004] To address the aforementioned technical problems, embodiments of the present invention provide a protective cover mounting assembly for an optical module, comprising: A circuit board carrier having at least two receiving slots for holding circuit boards; Install a cover plate and connect it to the circuit board carrier; The mounting cover has a pressure plate and a main body. The main body has at least two limiting cavities for accommodating the protective cover. The limiting cavities are arranged in a one-to-one correspondence with the accommodating grooves. The pressure plate is movably connected to the main body and is used to apply a force close to the circuit board to the protective cover.

[0005] In one embodiment, the pressure plate is rotatable in a direction approaching or away from the limiting cavity, and / or the pressure plate is movable in the arrangement direction of the limiting cavity.

[0006] In one embodiment, the protective cover mounting assembly in the optical module further includes at least two limiting blocks, which are disposed on the main body and enclose to form the limiting cavity. The limiting cavity extends through the main body along the height direction, and the dimensions of the limiting cavity are adjustable along the length and / or width directions.

[0007] In one embodiment, the circuit board carrier is provided with an elastic pressure block, which is disposed on at least one side of the receiving groove. The elastic pressure block is retractable along the length of the circuit board carrier to press against or release the pressure on the circuit board.

[0008] In one embodiment, at least two of the limiting cavities are spaced apart along the length direction of the mounting cover plate; The mounting cover is provided with a pressure plate, which is movable along the length of the mounting cover, or the pressure plate is movable along the length of the mounting cover and can rotate in the direction of approaching or moving away from the limiting cavity.

[0009] In one embodiment, at least two of the limiting cavities are spaced apart along the length direction of the mounting cover plate; The mounting cover is provided with at least two pressure plates, each pressure plate being arranged in a corresponding manner to the limiting cavity, and the pressure plates being rotatable in the direction of approaching or moving away from the limiting cavity.

[0010] In one embodiment, the pressure plate has a loading position and an abutment position; The pressure plate moves between the loading position and the abutting position along a direction that is close to or far from the limiting cavity; When the pressure plate is in the loading position, the pressure plate is spaced apart from the limiting cavity; when the pressure plate is in the abutting position, the pressure plate abuts against the protective cover in the limiting cavity.

[0011] In one embodiment, the protective cover mounting assembly in the optical module includes a pressure plate connector; One end of the pressure plate connector is rotatably connected to the main body, and the other end is connected to the pressure plate.

[0012] In one embodiment, the protective cover mounting assembly in the optical module includes a driving block; The driving block is connected to the pressure block connector and is used to drive the pressure plate connector to rotate in a direction that is closer to or farther from the limiting cavity.

[0013] In one embodiment, the protective cover mounting assembly in the optical module includes a magnetic attachment. The magnetic attractor is disposed on the main body and is attracted to the pressure plate connector to provide a force to the pressure plate connector that approaches the limiting cavity.

[0014] In one embodiment, the protective cover mounting assembly in the optical module includes fasteners, and the limiting block is provided with a connecting groove; The fastener passes through the connecting groove and is connected to the main body; The connecting groove extends along the length or width direction, the size of the connecting groove is larger than the size of the fastener, and the limiting block is slidably disposed relative to the main body.

[0015] In one embodiment, the limiting block is provided with a driving groove, which is formed on one side of the connecting groove, and the driving groove is used to drive the limiting block to slide along the extension direction of the connecting groove.

[0016] In one embodiment, the elastic block has an unlocked position and a locked position, and the elastic block moves between the unlocked position and the locked position along the length direction of the circuit board carrier; When the elastic block is in the unlocked position, the elastic block is disposed away from the receiving groove along the length direction of the circuit board carrier. When the elastic block is in the locked position, the elastic block extends into the receiving groove along the length direction of the circuit board carrier and presses against the circuit board in the receiving groove.

[0017] In one embodiment, the circuit board carrier is provided with a sliding groove, the elastic pressure block is disposed in the sliding groove, and can slide along the length direction in the sliding groove.

[0018] To solve the above-mentioned technical problems, embodiments of the present invention also provide a dispensing device, including a dispensing assembly and a protective cover mounting assembly in an optical module as described above; The dispensing assembly is used to provide adhesive to the surface of the circuit board on the circuit board carrier.

[0019] To address the aforementioned technical problems, this invention also provides a method for mounting a protective cover in an optical module, using the dispensing equipment described above, including: Load the circuit board onto the circuit board carrier; Apply adhesive to the surface of the circuit board; Adjust the size of the limiting cavity on the mounting cover and connect the mounting cover to the circuit board carrier; The protective cover is placed in the limiting cavity, and a pressure plate is used to apply a force close to the circuit board to the protective cover, and it is heated and cured until the protective cover is bonded to the surface of the circuit board.

[0020] Compared with existing optical module fixtures, the protective cover mounting assembly for optical modules provided in this embodiment of the invention has the following advantages: This invention provides a protective cover mounting assembly for an optical module, including a circuit board carrier and a mounting cover. The circuit board carrier has at least two receiving slots for supporting the circuit board. The mounting cover is connected to the circuit board carrier and has a pressure plate and a main body. The main body has at least two limiting cavities for accommodating the protective cover, and the limiting cavities are correspondingly arranged with the receiving slots. The pressure plate is movably connected to the main body and applies a force close to the circuit board to the protective cover. Thus, with at least two receiving slots on the circuit board carrier and at least two limiting cavities on the mounting cover, at least two protective covers can be mounted simultaneously, improving the installation efficiency of the protective covers and reducing the waiting time for single-sided curing. Simultaneously, the limiting cavities can restrict and position the protective cover, reducing the probability of damaging the gold wires of optical components. Furthermore, by applying a force close to the circuit board to the protective cover through the pressure plate, the flatness of the protective cover can be ensured while quickly pressing it, thereby improving the performance of the optical module. Attached Figure Description

[0021] Figure 1 The diagram shown is a structural schematic of the protective cover mounting assembly in the optical module provided in an embodiment of the present invention.

[0022] Figure 2 The diagram shown is a structural schematic of the mounting cover plate provided in an embodiment of the present invention.

[0023] Figure 3 The diagram shown is a schematic diagram of the pressure plate in the abutting position according to an embodiment of the present invention.

[0024] Figure 4 The diagram shown is a schematic diagram of the limiting cavity provided in an embodiment of the present invention.

[0025] Figure 5 The diagram shown is a schematic diagram of the circuit board carrier provided in an embodiment of the present invention.

[0026] Figure 6 The diagram shown is a schematic diagram of the elastic pressure block in the unlocked position according to an embodiment of the present invention.

[0027] Figure 7 The diagram shown is a schematic diagram of the elastic pressure block in the locked position according to an embodiment of the present invention.

[0028] Figure 8 The diagram shown is a flowchart illustrating the method for attaching a protective cover in an optical module according to an embodiment of the present invention.

[0029] Figure 9 The diagram shown illustrates the connection between the mounting cover and the circuit board carrier provided in an embodiment of the present invention.

[0030] Figure 10The diagram shown is a schematic of the pressure plate and the protective cover abutting against each other according to an embodiment of the present invention.

[0031] The explanations of the reference numerals in the accompanying drawings are as follows: 1-Circuit board carrier; 10-Accommodation groove; 11-Elastic pressure block; 12-Sliding groove; 13-Magnetic component; 2-Mounting cover plate; 20-Main body; 21-Pressure plate; 22-Pressure plate connector; 23-Drive block; 24-Magnetic suction component; 25-Lock; 200-Limiting cavity; 201-First limiting block; 202-Second limiting block; 203-Connecting groove; 204-Drive groove; 205-Fastener; 3-Circuit board; 4-Protective cover. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," and "radial," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] As those skilled in the art will understand, mounting protective covers on printed circuit board assemblies is primarily to address the various physical and electrical threats faced by the circuit boards in practical applications, ensuring their stable and reliable operation. For example, in general electronic equipment, the main functions of protective covers are electromagnetic shielding and physical protection. Using a metal enclosure to form a Faraday cage isolates internal and external electromagnetic interference, ensuring signal integrity. Simultaneously, the enclosure provides a physical barrier for the circuit board and the precision components located on it, preventing external impacts, bumps, and foreign objects such as dust and debris. In kitchen appliances or outdoor equipment, the main function of protective covers is environmental protection. Through a sealed structure, dust, moisture, and liquids are isolated, achieving functions such as dustproofing, moisture-proofing, waterproofing, and protection against chemical contamination. In robotic or industrial environments, protective covers also need to provide physical impact protection and electrostatic discharge (ESD) protection. Adding anti-collision strips enhances the impact resistance of the circuit board, and using antistatic materials to make the enclosure provides a grounding path, preventing ESD damage to precision components.

[0036] In existing technologies, protective covers need to be mounted on the front and back of the printed circuit board assembly separately. During the mounting process, only one protective cover can usually be mounted at a time, and after completing the mounting on one side, it is necessary to wait for the adhesive to cure before mounting the other side, which reduces mounting efficiency. At the same time, there is no limiting and guiding mechanism before the protective cover is installed on the printed circuit board assembly, which makes it very easy to damage the gold wires of optical devices on the printed circuit board assembly. Furthermore, manually placing the protective cover can easily cause uneven installation, affecting the performance of the optical module.

[0037] Based on this, please refer to Figures 1-2 This invention provides a protective cover mounting assembly for an optical module, including a circuit board carrier 1 and a mounting cover 2. The circuit board carrier 1 has at least two receiving slots 10 for supporting a circuit board 3. The mounting cover 2 is connected to the circuit board carrier 1. The mounting cover 2 has a pressure plate 21 and a main body 20. The main body 20 has at least two limiting cavities 200 for accommodating the protective cover 4. The limiting cavities 200 are arranged in a one-to-one correspondence with the receiving slots 10. The pressure plate 21 is movably connected to the main body 20 and is used to apply a force close to the circuit board 3 to the protective cover 4.

[0038] In this embodiment, the circuit board carrier 1 is provided with at least two receiving slots 10, which can simultaneously accommodate at least two circuit boards 3. The main body 20 of the mounting cover 2 is provided with at least two limiting cavities 200, which can simultaneously accommodate at least two protective covers 4. Therefore, the protective cover mounting assembly in the optical module provided in this embodiment can simultaneously mount at least two protective covers 4, improving the mounting efficiency of the protective covers 4. At the same time, compared with the waiting time required for the single-sided adhesive curing of a single circuit board 3 in the prior art, the protective cover mounting assembly in the optical module provided in this embodiment can simultaneously cure the adhesive on multiple circuit boards 3 after the same waiting time, further improving the installation efficiency of the protective covers 4. In addition, the setting of the limiting cavity 200 can restrict and position the protective cover 4, preventing the protective cover 4 from damaging the gold wires of the optical device during placement. This embodiment of the invention also adds a pressure plate 21 to apply a force close to the circuit board 3 to the protective cover 4, which can quickly press the protective cover 4 while ensuring the flatness of the protective cover 4, thereby improving the performance of the optical module.

[0039] Specifically, such as Figures 1-2 As shown, the circuit board carrier 1 has five receiving slots 10, which are spaced apart along the length direction. Similarly, the mounting cover 2 has five corresponding limiting cavities 200, which are also spaced apart along the length direction. When the operator uses the aforementioned protective cover mounting assembly to mount the protective cover 4, all five protective covers 4 can be mounted onto the corresponding circuit boards 3 simultaneously. In some other embodiments, the circuit board carrier 1 may also have other numbers of receiving slots 10, and correspondingly, the mounting cover 2 may also have other numbers of limiting cavities 200. This embodiment of the invention does not impose any limitations on this.

[0040] As an optional embodiment, the pressure plate 21 is rotatable in the direction of approaching or moving away from the limiting cavity 200, and / or the pressure plate 21 is movable in the arrangement direction of the limiting cavities 200. In this way, the pressure plate 21 can apply a force close to the circuit board 3 to the plurality of protective covers 4 by rotation or movement, so that the protective covers 4 and the circuit board 3 are bonded to the circuit board 3 by adhesive applied to the surface of the circuit board 3.

[0041] In some examples, the arrangement of the pressure plate 21 is related to the arrangement of the receiving groove 10 and the limiting cavity 200. For example, when multiple receiving grooves 10 and limiting cavities 200 are arranged at intervals along the length or width direction, only one pressure plate 21 can be provided, and it can move along the length or width direction to press against each protective cover 4 respectively; or, the number of pressure plates 21 can be adapted to the number of receiving grooves 10 and limiting cavities 200 to press against the protective cover 4 simultaneously. When multiple receiving grooves 10 and limiting cavities 200 are arranged in a matrix along the length and width directions, the pressure plates 21 can be arranged according to the number of rows or columns of the matrix and move along the length or width direction respectively. This embodiment does not limit this, and those skilled in the art can adjust the arrangement of the pressure plate 21, receiving groove 10 and limiting cavity 200 according to the actual situation.

[0042] In an alternative embodiment, at least two limiting cavities 200 are spaced apart along the length of the mounting cover 2; a pressure plate 21 is provided on the mounting cover 2, which is movable along the length of the mounting cover 2, or the pressure plate 21 is movable along the length of the mounting cover 2 and rotatable in the direction of approaching or moving away from the limiting cavity 200. Schematic, the main body 20 of the mounting cover 2 is provided with five limiting cavities 200 spaced apart along the length, while the mounting cover 2 may only have one pressure plate 21. The pressure plate 21 is disposed in a sliding groove 12 extending along the length, and the pressure plate 21 is slidable in the sliding groove 12, capable of sliding sequentially to a position corresponding to each limiting cavity 200, so as to sequentially apply a force close to the circuit board 3 to the protective cover 4 in each limiting cavity 200. Preferably, in order to increase the pressure exerted by the pressure plate 21 on the protective cover 4, the pressure plate 21 can also rotate in the direction of approaching or moving away from the limiting cavity 200. Specifically, one end of the pressure plate 21 is provided with a rotating shaft, and the pressure plate 21 can rotate around the axis of the rotating shaft in the direction of approaching or moving away from the limiting cavity 200. When the pressure plate 21 moves to a position corresponding to the limiting cavity 200, it can rotate in the direction of approaching the limiting cavity 200 to increase the pressure exerted by the pressure plate 21 on the protective cover 4.

[0043] Optionally, the aforementioned pressure plate 21 can be made of metal material and has a certain weight so that it can use its own weight to press against the protective cover 4.

[0044] Please continue to refer to this. Figure 2At least two limiting cavities 200 are spaced apart along the length of the mounting cover plate 2; at least two pressure plates 21 are provided on the mounting cover plate 2, with each pressure plate 21 corresponding to one of the limiting cavities 200, and the pressure plates 21 are rotatable in the direction of approaching or moving away from the limiting cavity 200. For example, the main body 20 of the mounting cover plate 2 is provided with five limiting cavities 200 spaced apart along the length, and the mounting cover plate 2 is provided with five corresponding pressure plates 21, each pressure plate 21 being rotatable in the direction of approaching or moving away from the limiting cavity 200. Specifically, one end of the pressure plate 21 is provided with a rotating shaft, and the pressure plate 21 can rotate around the axis of the rotating shaft in the direction of approaching or moving away from the limiting cavity 200. When the protective cover 4 is placed in the limiting cavity 200, the pressure plate 21 is driven to rotate in the direction of approaching the limiting cavity 200 so as to abut against the protective cover 4 and apply a force close to the circuit board 3 to the protective cover 4.

[0045] For details, please refer to Figures 2-3 The pressure plate 21 has a loading position and an abutting position; the pressure plate 21 moves between the loading position and the abutting position along the direction of approaching or moving away from the limiting cavity 200; when the pressure plate 21 is in the loading position, the pressure plate 21 is spaced apart from the limiting cavity 200; when the pressure plate 21 is in the abutting position, the pressure plate 21 abuts against the protective cover 4 in the limiting cavity 200. In this embodiment, the pressure plate 21 is rotatable along the direction of approaching or moving away from the limiting cavity 200. When the pressure plate 21 is in the loading position, the pressure plate 21 is spaced apart from the limiting cavity 200. At this time, the operator can load the protective cover 4 into the limiting cavity 200; after loading, the operator can drive the pressure plate 21 to rotate along the direction toward the limiting cavity 200 and abut against the protective cover 4 in the limiting cavity 200 to apply a force close to the circuit board 3 to the protective cover 4.

[0046] like Figure 3 As shown, the protective cover mounting assembly in the optical module includes a pressure plate connector 22; one end of the pressure plate connector 22 is rotatably connected to the main body 20, and the other end is connected to the pressure plate 21. Specifically, one end of the pressure plate connector 22 passes through a rotating shaft, which is arranged along its length. The rotating shaft is mounted on the main body 20 by fasteners (e.g., bolts). The pressure plate connector 22 is rotatable around the axis of the rotating shaft to drive the pressure plate 21 to rotate in a direction closer to or further away from the limiting cavity 200.

[0047] Please continue to refer to this. Figure 3The protective cover mounting assembly in the optical module includes a drive block 23. The drive block 23 is connected to the pressure block connector and is used to drive the pressure plate connector 22 to rotate in a direction approaching or away from the limiting cavity 200. Specifically, the drive block 23 is connected to the top surface of the pressure plate connector 22 by a fastener (e.g., a bolt) and protrudes in a direction at an angle to the extending direction of the pressure plate connector 22, so as to facilitate the operator's grip and apply driving force to drive the pressure plate connector 22 and the pressure plate 21 to rotate together in a direction approaching or away from the limiting cavity 200. In some other embodiments, the drive block 23 may also be integrally formed with the pressure plate connector 22 and protrude from the side of the pressure plate connector 22; this embodiment does not limit this.

[0048] Preferably, to increase the pressure of the pressure plate 21 on the protective cover 4, the protective cover mounting assembly in the optical module includes a magnetic suction member 24. The magnetic suction member 24 is disposed on the main body 20 and is attracted to the pressure plate connector 22 to provide a force to the pressure plate connector 22 to approach the limiting cavity 200. Thus, as the pressure plate 21 gradually moves from the loading position to the contact position, the magnetic force of the magnetic suction member 24 guides the pressure plate connector 22 to continue to approach the limiting cavity 200, and when the pressure plate 21 abuts against the protective cover 4, it attracts the pressure plate connector 22. The pressure plate 21, under its own weight and the magnetic attraction of the magnetic suction member 24, forms a continuous pressure on the protective cover 4, thereby improving the adhesion between the protective cover 4 and the circuit board 3.

[0049] Specifically, the bottom surface of the aforementioned pressure plate connector 22 may be provided with a protrusion (not shown in the figure), which can be attracted to the magnetic attractor 24. The operator can control the magnitude of the force applied by the pressure plate 21 to the protective cover 4 by changing the protrusion distance of the protrusion. Exemplarily, the protrusion may be made of metal, and the magnetic attractor 24 may be a magnet.

[0050] Please refer to Figure 4 The protective cover mounting assembly in the optical module also includes at least two limiting blocks. These at least two limiting blocks are disposed on the main body 20 and enclose a limiting cavity 200. The limiting cavity 200 extends through the main body 20 along its height direction, and its dimensions along its length and / or width are adjustable. Thus, operators can adjust the dimensions of the limiting cavity 200 along its length and / or width directions based on the dimensional differences between different protective covers 4 to accommodate protective covers 4 of different sizes. It should be noted that the limiting cavity 200 extends through the main body 20 along its height direction so that after the protective cover 4 is loaded into the limiting cavity 200, it can directly contact the adhesive on the surface of the circuit board 3 and gradually adhere under the pressure of the pressure plate 21.

[0051] In this embodiment, a limiting groove (not shown in the figure) extending through the body 20 along its height direction is provided on the main body 20. Exemplarily, the shield mounting assembly in the optical module includes two limiting blocks. The two limiting blocks can be arranged at intervals along the length direction and extend into the limiting groove respectively, so as to form a limiting cavity 200 together with the sidewall of the limiting groove along the width direction. The operator can adjust the distance between the two limiting blocks to change the size of the limiting cavity 200 along the length direction. Alternatively, the two limiting blocks can be arranged at intervals along the width direction and extend into the limiting groove respectively, so as to form a limiting cavity 200 together with the sidewall of the limiting groove along the length direction. The operator can adjust the distance between the two limiting blocks to change the size of the limiting cavity 200 along the length direction. The distance between the two limiting blocks can be adjusted to change the size of the limiting cavity 200 in the width direction. The two limiting blocks can also be set along the length and width directions respectively, and extend into the limiting groove respectively, so as to form the limiting cavity 200 together with the side wall of the limiting groove along the length direction and the side wall along the width direction. The operator can adjust the distance between the two limiting blocks and the side wall of the limiting groove along the length direction, and the distance between the two limiting blocks and the side wall of the limiting groove along the width direction respectively, so as to change the size of the limiting cavity 200 in the length and width directions respectively.

[0052] As an optional embodiment, please continue to refer to Figure 4 The protective cover mounting assembly in the optical module includes a fastener 205 and a connecting groove 203 on a limiting block. The fastener 205 passes through the connecting groove 203 and is connected to the main body 20. The connecting groove 203 extends along the length or width direction, and its size is larger than that of the fastener 205. The limiting block is slidably disposed relative to the main body 20. Thus, since the size of the connecting groove 203 is larger than that of the fastener 205, relative movement can occur between the fastener 205 and the connecting groove 203. Furthermore, because the fastener 205 passes through the connecting groove 203 and is fixedly connected to the main body 20, the limiting block can slide relative to the fastener 205 along the extension direction of the connecting groove 203, thereby changing the size of the limiting cavity 200 along the length or width direction.

[0053] Specifically, in Figure 4In the illustrated example, the protective cover mounting assembly in the optical module includes two first limiting blocks 201 and two second limiting blocks 202. The two first limiting blocks 201 are spaced apart along the length direction, and connecting grooves 203 on the two first limiting blocks 201 extend along the length direction. The two second limiting blocks 202 are spaced apart along the width direction, and connecting grooves 203 on the two second limiting blocks 202 extend along the width direction. Thus, an operator can change the distance between the two first limiting blocks 201 along the length direction by sliding the first limiting blocks 201 relative to the fastener 205, thereby changing the size of the limiting cavity 200 along the length direction. Similarly, an operator can change the distance between the two second limiting blocks 202 along the width direction by sliding the second limiting blocks 202 relative to the fastener 205, thereby changing the size of the limiting cavity 200 along the width direction, thus achieving compatibility of the limiting cavity 200 with protective covers 4 of different sizes.

[0054] Furthermore, a drive groove 204 is provided on the limiting block, which is located on one side of the connecting groove 203. The drive groove 204 is used to drive the limiting block to slide along the extension direction of the connecting groove 203. In this way, the operator can apply force to the limiting block through the drive groove 204 to drive the limiting block to slide along the extension direction of the connecting groove 203, thereby changing the size of the limiting cavity 200. The setting of the drive groove 204 provides convenience for the operator to apply force, improves the efficiency of changing the size of the limiting cavity 200, and further enhances the practicality of the protective cover mounting assembly.

[0055] Specifically, in Figure 4 In this embodiment, the operator can drive the first limiting block 201 to slide along its length direction via the driving groove 204 on the first limiting block 201. Similarly, the operator can drive the second limiting block 202 to slide along its width direction via the driving groove 204 on the second limiting block 202. For example, the driving groove 204 is a U-shaped groove. In some other embodiments, the driving groove 204 can also be a rectangular groove, a triangular groove, a trapezoidal groove, or other irregularly shaped groove. This embodiment does not limit this.

[0056] In another optional embodiment, the main body 20 may also be provided with two third limiting blocks (not shown in the figure) and two fourth limiting blocks (not shown in the figure). The protective cover mounting assembly in the optical module includes a first fastener (not shown in the figure) and a second fastener (not shown in the figure). The two third limiting blocks are spaced apart along the length direction, and the main body 20 is provided with at least three first limiting holes (not shown in the figure) spaced apart along the length direction. The third limiting blocks are connected to different first limiting holes through the first fasteners to adjust the spacing between the two third limiting blocks. The two fourth limiting blocks are spaced apart along the width direction, and the main body 20 is provided with at least three second limiting holes (not shown in the figure) spaced apart along the width direction. The fourth limiting blocks are connected to different second limiting holes through the second fasteners to adjust the spacing between the two fourth limiting blocks. Thus, the operator can change the distance between two third limit blocks by connecting the third limit block to different first limit holes, thereby changing the dimension of the limit cavity 200 along the length direction; similarly, the operator can change the distance between two fourth limit blocks by connecting the fourth limit block to different second limit holes, thereby changing the dimension of the limit cavity 200 along the width direction. The operator can change the dimensions of the limit cavity 200 along the length and width directions based on the different sizes of the protective cover 4 to adapt to different sizes of protective covers 4, broaden the application range of the mounting cover 2, and improve the flexibility of the protective cover mounting assembly.

[0057] It should be noted that both the first and second fasteners mentioned above can be bolts.

[0058] Alternatively, by setting multiple first and second limiting holes and inserting the first and second fasteners into different first and second limiting holes, the dimensions of the limiting cavity 200 along the length and width directions can be changed. The number and arrangement of the first and second limiting holes can be set according to the size of the protective cover 4. Exemplarily, the number of limiting holes can be designed according to different models of the protective cover 4. For example, a set of first limiting holes arranged in the length direction can correspond to one model of the protective cover 4, and a set of second limiting holes arranged in the width direction can correspond to another model of the protective cover 4. The operator can directly select different sets of first and second limiting holes according to different models of the protective cover 4. This embodiment does not limit this.

[0059] Please refer to Figures 5-7The circuit board carrier 1 is provided with an elastic pressure block 11, which is located on at least one side of the receiving groove 10. The elastic pressure block 11 is retractable along the length of the circuit board carrier 1 to press against or release the pressure on the circuit board 3. In this way, the circuit board 3 is fixed in the receiving groove 10 by the pressing action of the elastic pressure block 11, which can prevent the circuit board 3 from being skewed due to external force disturbance during the mounting process and ensure the stability of the circuit board 3 during the mounting process.

[0060] In this embodiment, the elastic pressure block 11 can be composed of a pressure block (not shown in the figure) and a spring (not shown in the figure). One end of the spring is connected to the circuit board carrier 1, and the other end is connected to the pressure block. When it is necessary for the pressure block to release its pressure on the circuit board 3, a force is applied to the pressure block away from the receiving groove 10 to drive the spring to compress, causing the pressure block to move away from the receiving groove 10 and release its pressure on the circuit board 3. When it is necessary to press against the circuit board 3, the force applied to the pressure block away from the receiving groove 10 is stopped, and the spring returns to its original length due to its own elasticity, so as to drive the pressure block to extend into the receiving groove 10 and press against the circuit board 3 in the receiving groove 10.

[0061] Optional, such as Figure 5 As shown, the bottom part of the receiving groove 10 is hollowed out, and the position of the hollowed-out area is adapted to the position of the mounting protective cover 4 of the circuit board 3. In this way, when the protective cover 4 is mounted on the front of the circuit board 3, if it is necessary to mount the protective cover 4 on the back of the circuit board 3, the circuit board 3 can be flipped directly. At this time, the protective cover 4 on the front of the circuit board 3 is exposed in the hollowed-out area, and there will be no change in height, thus not affecting the mounting of the protective cover 4 on the back of the circuit board 3.

[0062] like Figures 6-7 As shown, the elastic block 11 has an unlocked position and a locked position, and the elastic block 11 moves between the unlocked position and the locked position along the length direction of the circuit board carrier 1; when the elastic block 11 is in the unlocked position, the elastic block 11 is positioned away from the receiving groove 10 along the length direction of the circuit board carrier 1 (e.g., Figure 6 (As shown); When the elastic block 11 is in the locked position, the elastic block 11 extends into the receiving groove 10 along the length direction of the circuit board carrier 1 and presses against the circuit board 3 in the receiving groove 10 (as shown). Figure 7 (As shown). Thus, the operator can move the elastic pressure block 11 by turning it, and complete the loading and unloading operation of the circuit board 3 based on the position change of the elastic pressure block 11.

[0063] Specifically, the circuit board 3 is provided with a sliding groove 12, and the elastic pressure block 11 is disposed in the sliding groove 12 and can slide along the length direction in the sliding groove 12. In this embodiment, the top surface of the elastic pressure block 11 is flush with the top surface of the circuit board 3. At this time, when the elastic pressure block 11 is in the locked position, it can extend into the receiving groove 10 through the sliding groove 12 and abut against the side of the circuit board 3. In some other embodiments, the top surface of the elastic pressure block 11 may be lower than the top surface of the circuit board 3, or the top surface of the elastic pressure block 11 may be higher than the top surface of the circuit board 3. When the bottom surface of the elastic pressure block 11 is flush with the top surface of the circuit board 3, when the elastic pressure block 11 is in the locked position, it can extend into the receiving groove 10 through the sliding groove 12 and abut against the top surface of the circuit board 3 to fix the circuit board 3.

[0064] It should be noted that the shape and size of the receiving groove 10 are adapted to the circuit board 3. Optionally, the receiving groove 10 may also be provided with a limiting part (not shown in the figure) adapted to the circuit board 3 to form a snap-fit ​​with the side wall of the circuit board 3, thereby improving the snap-fit ​​connection strength between the circuit board 3 and the receiving groove 10.

[0065] In another embodiment, the present invention also provides a dispensing device, including a dispensing assembly and a protective cover mounting assembly for an optical module as described above; the dispensing assembly is used to provide adhesive to the surface of the circuit board 3 on the circuit board carrier 1. Thus, by using the protective cover mounting assembly for the optical module described above, adhesive is first dispensed onto the surface of the circuit board 3 on the circuit board carrier 1 via the dispensing assembly, and then the mounting cover 2 is connected to the circuit board carrier 1. Since the bottom of the limiting cavity 200 on the mounting cover 2 is hollowed out, after the protective cover 4 is placed in the limiting cavity 200, the protective cover 4 can come into contact with the adhesive on the surface of the circuit board 3, and the bonding between the protective cover 4 and the circuit board 3 is further achieved by the pressure plate 21.

[0066] In an optional embodiment, the dispensing assembly may include a glue gun, an angle drive mechanism, a position drive mechanism, a glue supply system, a dispensing valve, and a vision and control system. The glue gun is mounted at one end of the angle drive mechanism and connected to the glue supply system via piping. The glue gun is the component that dispenses glue, and its internal striking pin or valve controls the opening and closing of the glue dispensing channel. One end of the angle drive mechanism is connected to the position drive mechanism, and the other end is connected to the glue gun. The angle drive mechanism can drive the glue gun to rotate, thereby adapting to dispensing needs at side walls or corners. One end of the position drive mechanism is fixed to the frame of the dispensing equipment, and the other end is connected to the angle drive mechanism. The position drive mechanism can drive the glue gun to move linearly to each target point on the printed circuit board assembly that requires dispensing. The glue supply system is connected to the dispensing valve via piping and typically includes a glue supply cylinder, a pressure control device, etc. The glue supply system is responsible for storing the glue and continuously supplying glue to the dispensing valve and glue gun through piping at a stable and controllable pressure and flow rate. The dispensing valve is connected in series in the pipeline, with one end connected to the glue supply system and the other end connected to the glue gun. The dispensing valve can precisely control the opening and closing of the pipeline at high frequency through electromagnetic or pneumatic means, realizing micro-volume, high-frequency dispensing. The vision and control system are respectively connected to the drive mechanism, sensor and dispensing valve. The vision system can locate and detect, and the control system can process information and instruct the drive mechanism and dispensing valve to work together to ensure the accuracy and quality of dispensing.

[0067] In another embodiment, please refer to Figures 8-10 This invention also provides a method for mounting a protective cover in an optical module, using the dispensing equipment described above, including: Step S1: Load circuit board 3 onto circuit board carrier 1; Specifically, the elastic block 11 on the circuit board carrier 1 is moved to the unlocked position, and then the circuit board 3 is loaded into the receiving groove 10. At the same time, the elastic block 11 is moved from the unlocked position to the locked position. The elastic block 11 extends into the receiving groove 10 through the sliding groove 12 and presses against the side wall of the circuit board 3.

[0068] Step S2: Apply adhesive to the surface of circuit board 3; For example, the vision and control system in the dispensing assembly is used to determine the location where dispensing is required, and then the glue gun is moved to the corresponding position by the drive mechanism. The glue is controlled by the dispensing valve to pass through the glue gun and be dispensed onto the surface of the circuit board 3.

[0069] Step S3: Adjust the size of the limiting cavity 200 on the mounting cover 2, and connect the mounting cover 2 to the circuit board carrier 1 (e.g.) Figure 9 (as shown) Specifically, based on the size of the protective cover 4, the first limiting block 201 is connected to the appropriate first limiting hole, and the second limiting block 202 is connected to the appropriate second limiting hole to form a protective cavity that matches the size of the protective cover 4. Then, the mounting cover 2 is connected to the circuit board carrier 1.

[0070] In this embodiment, the mounting cover 2 and the circuit board carrier 1 are connected by a latch 25 and a magnetic element 13, respectively. Optionally, the latch 25 is provided at both ends of the mounting cover 2 along the length direction and can be engaged with both ends of the circuit board carrier 1 along the length direction. To reduce the gap between the mounting cover 2 and the circuit board carrier 1, the circuit board carrier 1 is also provided with a magnetic element 13, which can be attracted to the bottom surface of the mounting cover 2 to achieve a close fit between the mounting cover 2 and the circuit board carrier 1.

[0071] Step S4: Place the protective cover 4 in the limiting cavity 200, and apply a force close to the circuit board 3 to the protective cover 4 through the pressure plate 21 (e.g., Figure 10 (as shown), and heat to cure until the protective cover 4 adheres to the surface of the circuit board 3.

[0072] Specifically, the protective cover 4 is placed in the limiting cavity 200. Because the bottom of the limiting cavity 200 is open, the protective cover 4 can directly contact the adhesive on the surface of the circuit board 3. At this time, the pressure plate 21 is moved from the loading position to the abutting position, and the pressure plate 21 abuts against the protective cover 4. Simultaneously, the magnetic suction component 24 attracts the pressure plate connector 22, further enhancing the pressure effect of the pressure plate 21 on the protective cover 4. Finally, the circuit board 3 with the protective cover 4 attached and the circuit board carrier 1 are placed together under a light source for irradiation until the adhesive cures.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective cover mounting assembly for an optical module, characterized in that, include: A circuit board carrier having at least two receiving slots for holding circuit boards; Install a cover plate and connect it to the circuit board carrier; The mounting cover has a pressure plate and a main body. The main body has at least two limiting cavities for accommodating the protective cover. The limiting cavities are arranged in a one-to-one correspondence with the accommodating grooves. The pressure plate is movably connected to the main body and is used to apply a force close to the circuit board to the protective cover.

2. The protective cover mounting assembly in the optical module according to claim 1, characterized in that, The pressure plate is rotatable in the direction of approaching or moving away from the limiting cavity, and / or the pressure plate is movable in the arrangement direction of the limiting cavity.

3. The protective cover mounting assembly in the optical module according to claim 1, characterized in that, The protective cover mounting assembly in the optical module further includes at least two limiting blocks. The at least two limiting blocks are disposed on the main body and surround to form the limiting cavity. The limiting cavity extends through the main body along the height direction, and the size of the limiting cavity is adjustable along the length direction and / or the width direction.

4. The protective cover mounting assembly in the optical module according to claim 1, characterized in that, The circuit board carrier is provided with an elastic pressure block, which is located on at least one side of the receiving groove. The elastic pressure block is retractable along the length of the circuit board carrier to press against or release the pressure on the circuit board.

5. The protective cover mounting assembly in the optical module according to claim 1, characterized in that, At least two of the limiting cavities are spaced apart along the length direction of the mounting cover plate; The mounting cover is provided with a pressure plate, which is movable along the length of the mounting cover, or the pressure plate is movable along the length of the mounting cover and can rotate in the direction of approaching or moving away from the limiting cavity.

6. The protective cover mounting assembly in the optical module according to claim 1, characterized in that, At least two of the limiting cavities are spaced apart along the length direction of the mounting cover plate; The mounting cover is provided with at least two pressure plates, each pressure plate being arranged in a corresponding manner to the limiting cavity, and the pressure plates being rotatable in the direction of approaching or moving away from the limiting cavity.

7. The protective cover mounting assembly in the optical module according to claim 6, characterized in that, The pressure plate has a loading position and an abutment position; The pressure plate moves between the loading position and the abutting position along a direction that is close to or far from the limiting cavity; When the pressure plate is in the loading position, the pressure plate is spaced apart from the limiting cavity; when the pressure plate is in the abutting position, the pressure plate abuts against the protective cover in the limiting cavity.

8. The protective cover mounting assembly in the optical module according to claim 7, characterized in that, The protective cover mounting assembly in the optical module includes a pressure plate connector; One end of the pressure plate connector is rotatably connected to the main body, and the other end is connected to the pressure plate.

9. The protective cover mounting assembly in the optical module according to claim 8, characterized in that, The protective cover mounting assembly in the optical module includes a driver block; The driving block is connected to the pressure block connector and is used to drive the pressure plate connector to rotate in a direction that is closer to or farther from the limiting cavity.

10. The protective cover mounting assembly in the optical module according to claim 8, characterized in that, The protective cover mounting component in the optical module includes a magnetic attachment. The magnetic attractor is disposed on the main body and is attracted to the pressure plate connector to provide a force to the pressure plate connector that approaches the limiting cavity.

11. The protective cover mounting assembly in the optical module according to claim 3, characterized in that, The protective cover mounting assembly in the optical module includes fasteners, and the limiting block is provided with a connecting groove; The fastener passes through the connecting groove and is connected to the main body; The connecting groove extends along the length or width direction, and the size of the connecting groove is larger than the size of the fastener. The limiting block is slidably disposed relative to the body.

12. The protective cover mounting assembly in the optical module according to claim 11, characterized in that, The limiting block is provided with a driving groove, which is opened on one side of the connecting groove. The driving groove is used to drive the limiting block to slide along the extension direction of the connecting groove.

13. The protective cover mounting assembly in the optical module according to claim 4, characterized in that, The elastic block has an unlocked position and a locked position, and the elastic block moves between the unlocked position and the locked position along the length direction of the circuit board carrier; When the elastic block is in the unlocked position, the elastic block is disposed away from the receiving groove along the length direction of the circuit board carrier. When the elastic block is in the locked position, the elastic block extends into the receiving groove along the length direction of the circuit board carrier and presses against the circuit board in the receiving groove.

14. The protective cover mounting assembly in the optical module according to claim 13, characterized in that, The circuit board carrier is provided with a sliding groove, and the elastic pressure block is disposed in the sliding groove and can slide along the length direction in the sliding groove.

15. A dispensing device, characterized in that, Includes a dispensing assembly and a protective cover mounting assembly in an optical module as described in any one of claims 1 to 14; The dispensing assembly is used to provide adhesive to the surface of the circuit board on the circuit board carrier.

16. A method for mounting a protective cover in an optical module, characterized in that, The application of the dispensing equipment as described in claim 15 includes: Load the circuit board onto the circuit board carrier; Apply adhesive to the surface of the circuit board; Adjust the size of the limiting cavity on the mounting cover and connect the mounting cover to the circuit board carrier; The protective cover is placed in the limiting cavity, and a pressure plate is used to apply a force close to the circuit board to the protective cover, and it is heated and cured until the protective cover is bonded to the surface of the circuit board.

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