A correction tray jig for assembling an LED module

Abstract

This utility model provides a calibration tray fixture for assembling LED modules, including a tray, a placement slot within the tray, and a calibration cover plate that matches the placement slot. First, the back of the bottom shell is inserted into the front of the calibration cover plate, and the two plates are secured together by four engaging steps. Then, a PCBA is loaded into the placement slot of the tray using a robotic arm. Next, the bottom shell and calibration cover plate are inserted into the placement slot of the tray, and the positioning holes on the calibration cover plate and the positioning posts on the tray achieve matching and positioning, thus fixing them together. The entire assembly flows into a screw-locking machine, where screws are tightened, and the assembly exits the machine. The calibration cover plate is removed for reuse, and the modules are then moved to the next process. This fixture eliminates the need for precise dimensional design of the placement slot. By first assembling the bottom shell and PCBA into the calibration cover plate and tray respectively, and then performing positioning assembly between the calibration cover plate and the tray, the assembly difficulty is reduced. The fixture has a simple structure, is easy to operate, and has high compatibility with automated production lines, which is beneficial for product application.

Description

Technical Field

[0001] This utility model belongs to the field of module processing fixture technology, and in particular relates to a calibration tray fixture for assembling LED modules. Background Technology

[0002] Existing conventional LED display products have a base shell with roughly the same external dimensions as the PCBA. They use back-locking screws and a processing tray. The PCBA is placed on the bottom of the tray with its back side (IC side) facing up, then the base shell is placed on top of the PCBA. The tray's side clips secure the PCBA and base shell together, ensuring they are aligned and fixed against both sides. Screws are then tightened according to the aligned screw holes. However, newly developed products have a base shell with a single-sided dimension smaller than the PCBA, making conventional screw tightening methods impossible. The applicant's earlier patent application CN220350310U discloses a novel tray fixture structure for LED modules, including a fixture body with a rectangular receiving groove. Two opposing sides of the receiving groove have clearance grooves. The height of the clearance groove and the bottom surface of the receiving groove is greater than the thickness of the PCB board but less than the sum of the thicknesses of the PCB board and the bottom shell. The depth of the clearance groove is half the difference in length or width between the outer dimensions of the PCB board and the outer dimensions of the bottom shell. At least two adjacent sides of the receiving groove are provided with movable fixing buckles that extend into or out of the receiving groove. At least one clearance groove is disposed on the fixing buckle. The clearance grooves allow space for the larger PCB board. Adjusting the fixing buckle inward against the PCB board and bottom shell, and the clearance grooves on the two opposing sides in the length or width direction allow the PCB board to be inserted, resulting in synchronous relative displacement of the PCB board and bottom shell. This maintains their centered relative positions and prevents misalignment between the PCB board and bottom shell. However, the fixture structure has a large accommodating groove, and the setting of fixing buckles, push rods and other structures is not conducive to the placement and removal of PCB boards and bottom shells, which affects assembly efficiency. Utility Model Content

[0003] This invention provides a calibration tray fixture for assembling LED modules, which can effectively solve the above-mentioned problems.

[0004] This utility model is implemented as follows:

[0005] A calibration tray fixture for assembling LED modules includes a tray and a placement slot within the tray. The tray has at least one placement slot station. The tray has a calibration cover plate that matches the placement slot. The calibration cover plate has an engaging step, positioning holes, and mounting holes. The engaging step is symmetrically located on the front of the calibration cover plate and engages with the edge slots on the four sides of the bottom shell of the LED module. The positioning holes are located around the calibration cover plate. The tray has positioning pins corresponding to the positioning holes. The mounting holes are located on the calibration cover plate and correspond to the screw holes on the bottom shell.

[0006] As a further improvement, the correction cover plate is provided with a strip-shaped hole, and the engaging step is fixed to the strip-shaped hole by screws.

[0007] As a further improvement, the inner side of the engagement step is an engagement ramp.

[0008] As a further improvement, the correction cover plate is also provided with a clearance groove, which corresponds to the insertion interface on the bottom shell.

[0009] As a further improvement, both the placement groove and the correction cover plate are rectangular, and the engaging steps are fixed at the middle of the length and width directions of the correction cover plate, respectively.

[0010] As a further improvement, the edge of the placement groove is provided with a limiting groove, and the limiting groove is provided with an elastic buckle.

[0011] As a further improvement, the limiting groove is provided on at least two adjacent edges of the placement groove.

[0012] As a further improvement, the placement slot is provided with a clearance groove on one of its opposite edges.

[0013] The beneficial effects of this utility model are as follows: This application improves the calibration tray fixture by first inserting the back of the bottom shell into the front of the calibration cover plate, and then using four interlocking steps to press the bottom shell into place. Next, the automated line flows the tray into a fixed position, and the PCBA is loaded into the tray's placement slot by a robotic arm. Then, the fixed bottom shell and calibration cover plate are assembled and placed into an automated track, where a robotic arm clamps the placement slot on the tray. The positioning holes on the calibration cover plate and the positioning posts on the tray achieve matching and positioning, and the assembly is fixed together. The entire assembly flows into a screw machine, where it is fixed and limited according to conventional methods, screwed in, and then exits the screw machine. The calibration cover plate is removed for reuse, and the module flows into the next process. This fixture eliminates the need for precise dimensional design of the placement slot. It first assembles the bottom shell and PCBA into the calibration cover plate and tray respectively, and then performs positioning assembly between the calibration cover plate and tray, reducing assembly difficulty. The fixture has a simple structure, is easy to operate, and has high compatibility with automated lines, which is beneficial for product application. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of an embodiment of a calibration tray fixture for assembling LED modules according to this utility model;

[0016] Figure 2 This is a schematic diagram of the correction cover structure provided in an embodiment of a correction tray fixture for assembling LED modules according to this utility model;

[0017] Figure 3 This is a partial structural schematic diagram of an embodiment of a calibration tray fixture for assembling LED modules according to this utility model;

[0018] Figure 4 This is a cross-sectional schematic diagram of the alignment cover plate and the bottom shell engaging, provided in an embodiment of an alignment tray fixture for assembling LED modules according to this utility model.

[0019] Figure label:

[0020] Tray 1; Placement slot 11; Positioning post 12; Limiting slot 13; Elastic buckle 14; Clearance slot 15; Correction cover plate 2; Engaging step 21; Engaging slope 211; Strip hole 22; Positioning hole 23; Mounting hole 24; Clearance slot 25; Bottom shell 3; Edge groove 31; Screw hole 32; PCBA 4. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0022] In the description of this utility model, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In the description of this utility model, the terms "upper", "middle", "side", "side", "upper side", "end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Reference Figure 1-4 As shown, a calibration tray fixture for assembling LED modules includes a tray 1 and a placement slot 11 inside the tray 1. The tray 1 has at least one placement slot 11 station. The tray 1 has a calibration cover plate 2 that matches the placement slot 11. The calibration cover plate 2 has a locking step 21, a positioning hole 23, and a mounting hole 24. The locking step 21 is symmetrically arranged on the front of the calibration cover plate 2 and engages with the edge slots 31 on the four sides of the bottom shell 3 of the LED module. The positioning hole 23 is arranged around the calibration cover plate 2. The tray 1 has a positioning post 12 corresponding to the positioning hole 23. The mounting hole 24 is arranged on the calibration cover plate 2 and corresponds to the screw hole 32 on the bottom shell 3.

[0025] In one embodiment, two adjacent placement slots 11 are arranged on the tray 1; the alignment cover 2 and the placement slots 11 are positioned and assembled by positioning pins 12 and positioning slots, thereby ensuring that the PCBA 4 placed in the placement slots 11 is precisely aligned with the bottom shell 3 installed on the alignment cover 2; the bottom shell 3 is snapped together by the snap-fit ​​steps 21 on the four sides of the alignment cover 2, and the opposite sides of the bottom shell 3 are respectively provided with edge grooves 31, and the snap-fit ​​steps 21 are pressed into the edge grooves 31 to achieve a tight connection.

[0026] Furthermore, the correction cover plate 2 is provided with a strip hole 22, and the engaging step 21 is fixed to the strip hole by screws.

[0027] By installing and fixing the locking step 21 through the strip hole 22, the installation spacing of the locking step 21 can be adjusted according to the relative spacing of the edge groove 31 of the bottom shell 3, so as to obtain a better locking effect.

[0028] Furthermore, the inner side of the engaging step 21 is an engaging inclined surface 211.

[0029] The engagement ramp 211 is designed to facilitate the bottom shell 3 to be inserted into the engagement step 21, thereby achieving a tight connection.

[0030] Furthermore, the correction cover plate 2 is also provided with a relief groove 25, which corresponds to the insertion interface on the bottom shell 3.

[0031] The PCBA 4 is equipped with a signal socket, and the bottom shell 3 is equipped with a connection hole. The clearance groove 25 is used to avoid signal interference.

[0032] Furthermore, both the placement groove 11 and the correction cover plate 2 are rectangular, and the engaging step 21 is fixed at the middle of the length and width directions of the correction cover plate 2, respectively.

[0033] Symmetrical arrangement helps maintain balance.

[0034] Furthermore, the edge of the placement groove 11 is provided with a limiting groove 13, and the limiting groove 13 is provided with an elastic buckle 14.

[0035] The elastic clip 14 is used to restrict the position of PCBA 4, ensuring a precise connection with the base shell 3. When installing PCBA 4, push the elastic clip 14 outwards to assemble PCBA 4 into the placement slot 11. After installation, the elastic clip 14 clamps PCBA 4 inwards. The elastic clip 14 uses existing elastic components or elastic buttons, which will not be described in detail here.

[0036] Furthermore, the limiting groove 13 is provided on at least two adjacent edges of the placement groove 11.

[0037] It achieves limits in both length and width directions.

[0038] Furthermore, the placement slot 11 has a clearance slot 15 on one of its opposite edges.

[0039] The slot 11 is designed to facilitate the installation and removal of PCBA 4.

[0040] The operation sequence of the fixture in this application is as follows: First, the back of the bottom shell 3 is manually inserted into the front of the correction cover plate 2, and fixed into a whole by the four locking steps 21 of the correction cover plate 2; the tray 1 is fed into a fixed position by the automated line, and the PCBA 4 is loaded into the placement slot 11 of the tray 1 by the robot arm; the fixed bottom shell 3 and correction cover plate 2 are combined and loaded into the automated track, the robot arm clamps the tray 1 and aligns it with the PCBA 4, and the positioning is corrected and fixed by the positioning holes 23 of the correction cover plate 2 and the positioning pins 12 on the tray 1, and then combined and fixed together; the whole assembly flows into the screw machine, and the screws are tightened according to the conventional fixing limit, and the assembly flows out of the screw machine. The correction cover plate 2 is manually removed for reuse, and the module flows into the next process.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A calibration tray fixture for assembling LED modules, characterized in that, The device includes a tray and a placement slot within the tray, with at least one placement slot station on the tray. The tray is equipped with a calibration cover plate that matches the placement slot. The calibration cover plate has an engaging step, positioning holes, and mounting holes. The engaging step is symmetrically located on the front of the calibration cover plate and engages with the edge slots on the four sides of the bottom shell of the LED module. The positioning holes are located around the calibration cover plate. The tray has positioning posts corresponding to the positioning holes. The mounting holes are located on the calibration cover plate and correspond to the screw holes on the bottom shell.

2. The calibration tray fixture for assembling LED modules according to claim 1, characterized in that, The correction cover plate has a strip-shaped hole, and the engagement step is fixed to the strip-shaped hole by screws.

3. The calibration tray fixture for assembling LED modules according to claim 1, characterized in that, The inner side of the engagement step is an engagement ramp.

4. The calibration tray fixture for assembling LED modules according to claim 1, characterized in that, The correction cover plate is also provided with a clearance groove, which corresponds to the insertion interface on the bottom shell.

5. A calibration tray fixture for assembling LED modules according to claim 1, characterized in that, Both the placement groove and the correction cover plate are rectangular, and the engaging steps are fixed at the middle of the length and width directions of the correction cover plate, respectively.

6. A calibration tray fixture for assembling LED modules according to claim 1 or 5, characterized in that, The edge of the placement slot is provided with a limiting groove, and the limiting groove is provided with an elastic buckle.

7. A calibration tray fixture for assembling LED modules according to claim 6, characterized in that, The limiting groove is provided on at least two adjacent edges of the placement groove.

8. A calibration tray fixture for assembling LED modules according to claim 1, characterized in that, The placement slot has a clearance groove on one of its opposite edges.

Images