Welding device for backlight pins of display module

Abstract

The utility model provides a welding device for a backlight pin of a display module, which comprises a bottom plate, a first placing component and a second placing component arranged on the bottom plate, a positioning component arranged on the second placing component, and a pushing component used for driving the positioning component to operate. Through the concave hole and the groove, as the shape of the concave hole is matched with the shape of the rear half part of the backlight module, the backlight module can be positioned, and the shape of the groove is matched with the shape of the FPC, the FPC can be positioned, so that after the backlight module and the FPC are respectively placed, the pin position of the backlight module is just positioned right above the FPC bonding pad position; when the pins of the backlight module and the FPC bonding pad are welded, accurate alignment can be achieved to prevent position deviation, in addition, the wedge-shaped piece moves downwards to block the backlight module at the concave hole, and therefore it is guaranteed that the backlight module is fixed in the welding process, and welding position deviation caused by movement of the backlight module is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of display module manufacturing and processing, in particular to a welding device for backlight pins of a display module. Background Art

[0002] With the rapid development of display technology, liquid crystal display modules (LCD) have been widely used in many fields, from smart phones, tablet computers to TV monitors. In these display modules, the backlight unit is a crucial component, responsible for providing a uniform light source to ensure that the screen can display images clearly. The backlight unit usually contains multiple backlight strips and corresponding flexible printed circuits (FPCs). The FPC is used to connect the control circuit with the backlight strips to achieve power supply and signal transmission.

[0003] However, the alignment accuracy between the backlight pins and the FPC pads is extremely high. In the actual production process, the welding of the display module backlight pins and the flexible circuit board faces a series of challenges. The traditional welding alignment method relies on manual operation or simple mechanical alignment. This method is not only inefficient, but also prone to inaccurate positioning due to human factors, affecting the welding quality. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a welding device for display module backlight pins that can be accurately aligned.

[0005] The utility model provides the following technical solution: a welding device for display module backlight pins, comprising a base plate, a first placement component and a second placement component arranged on the base plate, a positioning component arranged on the second placement component, and the welding device further comprising a pushing component for driving the positioning component to operate;

[0006] The first placement assembly includes at least one slide rail arranged on the bottom plate, a placement plate slidably connected to the slide rail, a groove for placing the FPC opened on the placement plate, and a driving member fixedly connected to the bottom plate, wherein the output end of the driving member is fixedly connected to the placement plate;

[0007] The second placement component comprises a placement frame fixedly connected to the bottom plate, and a concave hole opened on the placement frame for placing the backlight module, wherein the concave hole is located above the groove;

[0008] The positioning assembly comprises a sliding frame slidably connected to the placement frame, and a wedge-shaped piece fixedly connected to the lower part of the sliding frame.

[0009] Furthermore, the pushing assembly includes an L-shaped extrusion member fixedly connected to the placement plate, a first sliding sleeve fixedly connected to the placement frame, a bidirectional wedge block slidably connected to the first sliding sleeve, a unidirectional wedge block fixedly connected to the sliding frame, and at least one elastic member connected between the sliding frame and the placement frame, wherein the extrusion member is extruded and matched with one end of the bidirectional wedge block, and the other end of the bidirectional wedge block is extruded and matched with the unidirectional wedge block.

[0010] Furthermore, the driving member is an electric push rod, and the output end of the electric push rod is fixedly connected to the placement plate.

[0011] Furthermore, two elastic members are connected between the sliding frame and the placing frame, the two elastic members are symmetrically arranged along the midpoint of the sliding frame, and the elastic members are springs.

[0012] Furthermore, the lower side surface of the wedge-shaped piece gradually forms an inclined surface downward from the position close to the recessed hole to the direction away from the recessed hole.

[0013] Furthermore, two of the slide rails are fixedly connected to the bottom plate, the two slide rails are symmetrically arranged along the midpoint of the bottom plate, and the placement plate is slidably connected between the two slide rails.

[0014] Furthermore, the welding device also includes a suction cup assembly arranged on the placement rack, and the suction cup assembly includes a second sliding sleeve fixedly connected to the placement rack, a sliding rod slidably connected to the second sliding sleeve, a vacuum suction cup fixedly connected to the lower part of the sliding rod, and a touch switch arranged on the upper part of the sliding rod.

[0015] The beneficial effects of the utility model are as follows: through the concave hole and the groove, the backlight module can be positioned because the shape of the concave hole is adapted to the shape of the rear half of the backlight module, and the shape of the groove is adapted to the shape of the FPC, so the FPC can be positioned, so that after the backlight module and the FPC are placed respectively, the pin position of the backlight module is just above the position of the FPC pad, and when the backlight module pin and the FPC pad are welded, precise alignment can be achieved to prevent position deviation, and in addition, the wedge-shaped piece is moved downward to block the backlight module at the concave hole, thereby ensuring that the backlight module is fixed during the welding process to prevent its movement from causing welding position deviation, and in addition, when the placement plate moves upward, the pushing component will be operated, and the operation of the pushing component will drive the sliding frame to move downward, and the downward movement of the sliding frame will drive the wedge-shaped piece to move downward, so that the wedge-shaped piece automatically operates the backlight module, thereby achieving the effect of convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the first placement component of the utility model.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the second placement component of the utility model.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the positioning component of the utility model.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the propulsion assembly of the utility model.

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the suction cup assembly of the utility model.

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the backlight module and pins of the utility model.

[0023] The marks in the accompanying drawings are: 1-bottom plate, 2-first placement component, 21-slide rail, 22-placement plate, 23-groove, 24-electric push rod, 3-second placement component, 31-placement frame, 32-recess, 4-positioning component, 41-wedge, 42-sliding frame, 5-pushing component, 51-first sliding sleeve, 52-bidirectional wedge block, 53-unidirectional wedge block, 54-spring, 55-extrusion piece, 6-suction cup assembly, 61-second sliding sleeve, 62-slide rod, 63-touch switch, 64-vacuum suction cup, 7-FPC, 8-backlight module, 9-pin. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] A welding device for display module backlight pins, such as Figure 1-Figure 5 and Figure 7 As shown, it comprises a base plate 1, a first placement component 2 and a second placement component 3 arranged on the base plate 1, a positioning component 4 arranged on the second placement component 3, and the welding device further comprises a pushing component 5 for driving the positioning component 4 to operate;

[0028] like Figure 2 As shown, the first placement component 2 includes at least one slide rail 21 provided on the bottom plate 1, a placement plate 22 slidably connected to the slide rail 21, a groove 23 for placing the FPC 7 opened on the placement plate 22, and a driving member fixedly connected to the bottom plate 1, and the output end of the driving member is fixedly connected to the placement plate 22;

[0029] like Figure 3 As shown, the second placement component 3 includes a placement frame 31 fixedly connected to the bottom plate 1, and a concave hole 32 opened on the placement frame 31 for placing the backlight module 8, and the concave hole 32 is located above the groove 23;

[0030] like Figure 4 As shown, the positioning assembly 4 includes a sliding frame 42 slidably connected to the placement frame 31, and a wedge-shaped member 41 fixedly connected to the lower part of the sliding frame 42;

[0031] The driving member is an electric push rod 24 , and an output end of the electric push rod 24 is fixedly connected to the placement plate 22 .

[0032] It can be understood that when the operator needs to weld FPC7 and backlight module 8 together, the operator can first place backlight module 8 and FPC7 into concave hole 32 and groove 23 respectively. The shape of concave hole 32 is adapted to the shape of the rear half of backlight module 8, thereby positioning backlight module 8. The shape of groove 23 is adapted to the shape of FPC7, thereby positioning FPC7. When backlight module 8 is placed into concave hole 32, the rear side of backlight module 8 needs to be placed into the deepest part of concave hole 32, and the rear side of backlight module 8 contacts the deepest surface of concave hole 32. When C7 is placed in the groove 23, the FPC7 needs to be flattened and fully contacted with the groove 23. In this way, the pin 9 of the backlight module 8 is located just above the position of the FPC7 pad. When the pin 9 of the backlight module 8 and the FPC7 pad are welded, accurate alignment can be achieved to prevent position deviation. Then the operator can apply high-temperature molten tin to the position of the FPC7 pad, and then start the electric push rod 24. The output end of the electric push rod 24 will drive the placement plate 22 to move upward, and the placement plate 22 moves upward to drive the FPC7 to move upward. At the same time, the placement plate When 22 moves upward, the pushing component 5 will be activated, and the pushing component 5 will drive the sliding frame 42 to move downward. The downward movement of the sliding frame 42 will drive the wedge 41 to move downward. The downward movement of the wedge 41 will block the backlight module 8 at the concave hole 32, thereby ensuring that the backlight module 8 is fixed during the welding process to prevent its movement from causing welding position deviation. Finally, the placement plate 22 will drive the FPC7 to contact the backlight module 8, thereby welding the FPC7 pad to the pin 9 of the backlight module 8 through the high-temperature molten tin. Only need to wait for two cooling The welding is completed. After the welding is completed, the electric push rod 24 is started again to move its output end downward, and the placement plate 22 also moves downward. Since the backlight module 8 and FPC7 are welded together, FPC7 will not move downward with the placement plate 22. When the placement plate 22 moves downward, the pushing component 5 will start to operate, and the pushing component 5 will drive the sliding frame 42 to move upward. The upward movement of the sliding frame 42 drives the wedge 41 to move upward. The wedge 41 no longer blocks the backlight module 8. At this time, the operator can take the welded backlight module 8 out of the recessed hole 32.

[0033] like Figure 5As shown, the pushing assembly 5 includes an L-shaped extrusion member 55 fixedly connected to the placement plate 22, a first sliding sleeve 51 fixedly connected to the placement frame 31, a bidirectional wedge block 52 slidably connected to the first sliding sleeve 51, a unidirectional wedge block 53 fixedly connected to the sliding frame 42, and at least one elastic member connected between the sliding frame 42 and the placement frame 31, wherein the extrusion member 55 is extruded and matched with one end of the bidirectional wedge block 52, and the other end of the bidirectional wedge block 52 is extruded and matched with the unidirectional wedge block 53, and two of the elastic members are connected between the sliding frame 42 and the placement frame 31, and the two elastic members are symmetrically arranged along the midpoint of the sliding frame 42, and the elastic member is a spring 54.

[0034] It can be understood that when the placement plate 22 moves upward, the placement plate 22 drives the extrusion member 55 to move upward, and the extrusion member 55 moves upward to squeeze the bidirectional wedge block 52, and the bidirectional wedge block 52 will move toward the direction close to the unidirectional wedge block 53 and squeeze the unidirectional wedge block 53, and the unidirectional wedge block 53 will be squeezed and move downward, and the spring 54 will be compressed, and the unidirectional wedge block 53 will move downward to drive the sliding frame 42 to move downward, so that the sliding frame 42 moves downward and drives the wedge member 41 to move downward to block the backlight module 8 When the placement plate 22 moves downward to its original position, the extrusion piece 55 will no longer squeeze the two-way wedge block 52, and will be reset by the spring 54, driving the sliding frame 42 and the wedge piece 41 to reset, and the sliding frame 42 will drive the unidirectional wedge block 53 to reset, and the reset of the unidirectional wedge block 53 will squeeze the two-way wedge block 52 to reset the two-way wedge block 52; wherein the spring 54 is symmetrically arranged along the midpoint of the sliding frame 42, and when the spring 54 drives the sliding frame 42 to reset, the sliding frame 42 can move and reset more smoothly to increase its stability.

[0035] The lower side surface of the wedge-shaped member 41 gradually slopes downward from a position close to the concave hole 32 to a direction away from the concave hole 32 .

[0036] Among them, the lower side of the wedge 41 is inclined. If the backlight module 8 is placed in the recessed hole 32, the backlight module 8 is not inserted into the deepest part of the recessed hole 32, but a small part is not inserted. If more backlight modules 8 are not inserted, it is easy for the operator to check it. Or due to external vibration, the backlight module 8 is moved out a little. When the wedge 41 moves downward, since the lower side of the wedge 41 is inclined, the wedge 41 will push the backlight module 8 to move deeper into the recess, thereby further ensuring that the pins 9 of the backlight module 8 are aligned with the FPC7 pads to prevent the two from offsetting.

[0037] The bottom plate 1 is fixedly connected to two slide rails 21 , which are symmetrically arranged along the midpoint of the bottom plate 1 , and the placement plate 22 is slidably connected between the two slide rails 21 .

[0038] Among them, by providing two slide rails 21, the placement plate 22 will move more smoothly, thereby increasing the stability of the placement plate 22 and increasing its service life.

[0039] like Figure 6 As shown, the welding device also includes a suction cup assembly 6 arranged on the placement rack 31, and the suction cup assembly 6 includes a second sliding sleeve 61 fixedly connected to the placement rack 31, a sliding rod 62 slidably connected to the second sliding sleeve 61, a vacuum suction cup 64 fixedly connected to the lower part of the sliding rod 62, and a touch switch 63 arranged on the upper part of the sliding rod 62.

[0040] It can be understood that when the backlight module 8 and the FPC7 are welded together and the placement plate 22 moves downward, the placement plate 22 will no longer support the FPC7. Since the backlight module 8 and the FPC7 are just welded together, the welding point is not very firm. The weight of the FPC7 itself may cause the welding point that has just been welded to break. Therefore, the suction cup assembly 6 is set. Specifically, when the placement plate 22 drives the FPC7 to move upward and contact the backlight module 8, the operator can push the slide bar 62 to move downward, and the downward movement of the slide bar 62 drives the vacuum suction cup 64 downward. Move, the vacuum suction cup 64 will contact the upper surface of FPC7, and the operator presses the touch switch 63 at this time, and the vacuum suction cup 64 starts to suck FPC7, giving FPC7 a suction force to prevent the welding point between the backlight module 8 and FPC7 from breaking. When the placement plate 22 moves down and resets, the operator can hold FPC7 with one hand, and then press the touch switch 63 again, the vacuum suction cup 64 stops working and no longer sucks FPC7, and then the operator pushes the slide bar 62 to reset the vacuum suction cup 64, and then the welded backlight module 8 and FPC7 can be taken out.

[0041] In summary, through the concave hole 32 and the groove 23, since the shape of the concave hole 32 is adapted to the shape of the rear half of the backlight module 8, the backlight module 8 can be positioned, and the shape of the groove 23 is adapted to the shape of the FPC7, so the FPC7 can be positioned. Therefore, after the backlight module 8 and FPC7 are placed respectively, the position of the pin 9 of the backlight module 8 is just above the position of the FPC7 pad. When the pin 9 of the backlight module 8 and the FPC7 pad are welded, precise alignment can be achieved to prevent position deviation. In addition, the wedge 41 is moved downward to block the backlight module 8 at the concave hole 32, thereby ensuring that the backlight module 8 is fixed during the welding process to prevent its movement from causing welding position deviation. In addition, when the placement plate 22 moves upward, the pushing component 5 will be operated, and the operation of the pushing component 5 will drive the sliding frame 42 to move downward. The downward movement of the sliding frame 42 will drive the wedge 41 to move downward, thereby the wedge 41 automatically operates the backlight module 8, thereby achieving the effect of convenient operation.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A welding device for display module backlight pins, characterized in that: The welding device comprises a bottom plate, a first placement component and a second placement component arranged on the bottom plate, and a positioning component arranged on the second placement component, wherein the welding device further comprises a pushing component for driving the positioning component to operate; The first placement assembly includes at least one slide rail arranged on the bottom plate, a placement plate slidably connected to the slide rail, a groove for placing the FPC opened on the placement plate, and a driving member fixedly connected to the bottom plate, wherein the output end of the driving member is fixedly connected to the placement plate; The second placement component comprises a placement frame fixedly connected to the bottom plate, and a concave hole opened on the placement frame for placing the backlight module, wherein the concave hole is located above the groove; The positioning assembly comprises a sliding frame slidably connected to the placement frame, and a wedge-shaped piece fixedly connected to the lower part of the sliding frame.

2. The welding device according to claim 1, characterized in that: The pushing assembly includes an L-shaped extrusion member fixedly connected to the placement plate, a first sliding sleeve fixedly connected to the placement frame, a bidirectional wedge block slidably connected to the first sliding sleeve, a unidirectional wedge block fixedly connected to the sliding frame, and at least one elastic member connected between the sliding frame and the placement frame, wherein the extrusion member is extruded and matched with one end of the bidirectional wedge block, and the other end of the bidirectional wedge block is extruded and matched with the unidirectional wedge block.

3. The welding device according to claim 1, characterized in that: The driving member is an electric push rod, and the output end of the electric push rod is fixedly connected to the placement plate.

4. The welding device according to claim 2, characterized in that: Two elastic members are connected between the sliding frame and the placing frame. The two elastic members are symmetrically arranged along the midpoint of the sliding frame, and the elastic members are springs.

5. The welding device according to claim 1, characterized in that: The lower side surface of the wedge-shaped piece gradually forms an inclined surface downward from a position close to the concave hole to a direction away from the concave hole.

6. The welding device according to claim 1, characterized in that: Two slide rails are fixedly connected to the bottom plate, the two slide rails are symmetrically arranged along the midpoint of the bottom plate, and the placement plate is slidably connected between the two slide rails.

7. The welding device according to claim 1, characterized in that: The welding device also includes a suction cup assembly arranged on the placement rack, and the suction cup assembly includes a second sliding sleeve fixedly connected to the placement rack, a sliding rod slidably connected to the second sliding sleeve, a vacuum suction cup fixedly connected to the lower part of the sliding rod, and a touch switch arranged on the upper part of the sliding rod.

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