Liquid crystal screen welding device

Abstract

The utility model provides a liquid crystal screen welding device, a liquid crystal screen comprises a printed circuit board (PCB), a backlight module arranged above the PCB and a liquid crystal display screen arranged above the backlight module, the liquid crystal screen welding device comprises a substrate, a plurality of placing cavities used for placing the PCB are arranged on the substrate, and the PCB is arranged in the placing cavities. The welding device comprises a PCB, a containing cavity is formed in the PCB, avoiding grooves for avoiding welding points are formed in the containing cavity, positioning pieces are arranged at the upper end and the lower end of the containing cavity, the lower end faces of the positioning pieces can abut against the upper end face of the PCB, and a positioning cover plate is arranged above the positioning pieces. And a plurality of PCBs can be fixedly welded at the same time, so that the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid crystal screen welding technical field, concretely relates to a liquid crystal screen welding device. BACKGROUND

[0002] Liquid crystal screen controls light by changing liquid crystal molecule arrangement through voltage, is applied to television, mobile phone and other equipment, in the process of liquid crystal screen welding, product needs to weld a liquid crystal display screen first, then weld a plug-in backlight module, in the process of welding, the requirement of welding is higher, requires that the backlight module and the backlight cannot have horizontal direction inclination, if the display screen is not welded well once, exists the situation that component pin is not completely leaked, secondary welding easily causes product scrap. UTILITY MODEL CONTENTS

[0003] Therefore, the utility model wants to solve the technical problem in prior art is to overcome the defect that the backlight module welding position deviation, thereby provides a kind of liquid crystal screen welding device with high welding efficiency and good welding effect.

[0004] Therefore, the utility model provides liquid crystal screen welding device, liquid crystal screen includes PCB board, the backlight module being set on the top of PCB board and the liquid crystal display screen being set on the top of backlight module, and liquid crystal screen welding device includes base plate, the base plate is provided with a plurality of placing cavities for placing PCB board, the avoiding slot for avoiding welding point is arranged in the placing cavity, the positioning sheet is arranged in the upper and lower ends of the placing cavity, the lower end surface of the positioning sheet can be in abutment with the upper end surface of PCB board, and the positioning cover plate is arranged above the positioning sheet.

[0005] Further, the positioning column for inserting the positioning sheet is arranged on the base plate, and the positioning groove matched with the positioning column is arranged on the positioning sheet.

[0006] Further, the extension sheet extending to the upper end surface of the PCB board is arranged on the positioning sheet, the liquid crystal display screen is covered above the extension sheet, and the avoiding camber surface for avoiding parts on the PCB board is further arranged on the positioning sheet.

[0007] Further, the positioning nail is arranged on the base plate, and the circular groove capable of being clamped into the positioning nail is arranged on the positioning cover plate.

[0008] Further, the opening for clamping the positioning nail is arranged on the circular groove.

[0009] Further, the empty slot for inserting the finger to take down the positioning cover plate is arranged on the base plate.

[0010] The utility model technical scheme has the following advantages:

[0011] 1.The liquid crystal screen welding device provided by the utility model, when welding the display screen, place each PCB board into the placing cavity of the base plate, then place two positioning sheets at the upper and lower ends of the PCB board to fix the PCB board, the base plate can place six backlight modules and distribute them into two rows, three in each row, after placing the PCB board, place the backlight modules on the PCB board, finally place the liquid crystal display screen above the backlight modules, cover the positioning cover plate, turn over the whole welding device, that is, the positioning cover plate is at the bottom and the base plate is at the top, after turning over, the operator can weld the backlight modules and the liquid crystal display screen on the PCB board, and the positioning sheet and the positioning cover plate can effectively limit the liquid crystal display screen to prevent the need for secondary welding.

[0012] 2.The liquid crystal screen welding device provided by the utility model, the base plate is provided with positioning columns, in order to effectively fix the position of the positioning sheet, a positioning groove is formed in the positioning sheet, when installing the positioning sheet, insert the positioning groove into the positioning column to fix the position of the two sides of the positioning sheet. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0014] Figure 1 It is the front structure schematic view of the welding device;

[0015] Figure 2 It is the back structure schematic view of the welding device;

[0016] Figure 3 It is the structure schematic view of the welding device after removing the positioning cover plate;

[0017] Figure 4 It is the structure schematic view of the backlight module and the liquid crystal display screen installed on the base plate.

[0018] Explanation of reference signs:

[0019] 10, PCB board; 1, backlight module; 11, liquid crystal display screen; 2, empty groove; 3, base plate; 31, placing cavity; 32, avoiding groove; 33, positioning column; 4, positioning sheet; 41, positioning groove; 42, extension sheet; 5, positioning cover plate; 6, avoiding arc surface; 7, positioning nail; 8, circular groove. SPECIFIC EMBODIMENTS

[0020] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0024] Embodiment

[0025] The present embodiment provides a liquid crystal screen welding device, which comprises a PCB board 10, a backlight module 1 arranged above the PCB board 10, and a liquid crystal display screen 11 arranged above the backlight module 1. The liquid crystal screen welding device comprises a base plate 3, wherein a plurality of placement cavities 31 for placing the PCB board 10 are arranged on the base plate 3, an avoidance groove 32 for avoiding welding points is arranged in each placement cavity 31, positioning sheets 4 are arranged at the upper and lower ends of each placement cavity 31, the lower end surface of each positioning sheet 4 can abut against the upper end surface of the PCB board 10, and a positioning cover plate 5 is arranged above each positioning sheet 4.

[0026] The above specific improvement is that Figures 1-4As shown, when soldering the display screen, each PCB board 10 is placed into the placement cavity 31 of the substrate 3. Then, two positioning pieces 4 are placed at the upper and lower ends of the PCB board 10 to fix the PCB board 10. The substrate 3 can hold 6 backlight modules 1, which are distributed in two rows of 3. After the PCB board 10 is placed, the backlight module 1 is placed on the PCB board 10. Finally, the LCD display 11 is placed on top of the backlight module 1. Finally, the positioning cover plate 5 is covered, and the entire soldering device is flipped over, that is, the positioning cover plate 5 is at the bottom and the substrate 3 is at the top. After flipping, the operator can solder the backlight module 1 and the LCD display 11 onto the PCB board 10. During the soldering process, the positioning pieces 4 and the positioning cover plate 5 can effectively restrict the LCD display 11 so that it does not tilt horizontally and avoids the need for secondary soldering.

[0027] Based on the above embodiments: the substrate 3 is provided with a positioning post 33 for the positioning piece 4 to be inserted, and the positioning piece 4 is provided with a positioning groove 41 that is adapted to the positioning post 33.

[0028] The specific improvements mentioned above are as follows: Figure 3 As shown, a positioning post 33 is provided on the substrate 3. In order to effectively fix the position of the positioning piece 4, a positioning groove 41 is opened on the positioning piece 4. When installing the positioning piece 4, the positioning groove 41 is inserted into the positioning post 33, which can fix the position of both sides of the positioning piece 4.

[0029] Based on the above embodiments: the positioning piece 4 is provided with an extension piece 42 extending to the upper end face of the PCB board 10, the liquid crystal display screen 11 covers the extension piece 42, and the positioning piece 4 is also provided with a avoidance arc surface 6 for avoiding parts on the PCB board 10.

[0030] The specific improvements mentioned above are as follows: Figure 3 As shown, the positioning piece 4 is provided with an extension piece 42. The positioning piece 4 presses down on the upper and lower ends of the PCB board 10. The extension piece 42 extends into the PCB board 10. The LCD screen 11 is installed above the backlight module 1, and its lower end face is in contact with the upper end face of the extension piece 42. In order to ensure that the positioning piece 4 will not affect the components on the PCB board 10, a clearance arc surface 6 is provided on the positioning piece 4 to avoid the components on the PCB board 10.

[0031] Based on the above embodiments: a positioning pin 7 is provided on the substrate 3, and a circular groove 8 is provided on the positioning cover plate 5 that can be inserted into the positioning pin 7.

[0032] The specific improvements mentioned above are as follows: Figure 1 As shown, a positioning pin 7 is provided on the substrate 3. When the positioning cover plate 5 is installed, the positioning pin 7 is matched with the circular groove 8, so that the position of the positioning cover plate 5 can be effectively fixed.

[0033] On the basis of the above embodiment: the circular groove 8 is provided with an opening for the positioning nail 7 to be clamped into.

[0034] The specific improvement is that: in order to facilitate the positioning cover plate 5 to be covered above the liquid crystal display screen 11, the opening is arranged at the circular groove 8, the positioning cover plate 5 is provided with four circular grooves 8, each of which is provided with an opening, when the positioning cover plate 5 is installed, the circular groove 8 at the lower end of the positioning cover plate 5 needs to be aligned with the positioning nail 7, then the positioning cover plate 5 is placed down, the two circular grooves 8 above the positioning cover plate 5 will be naturally aligned with the positioning nail 7, finally the operator presses the positioning cover plate 5 and the base plate 3 with the thumb, turns them over, and then the circuit of the backlight module 1 and the liquid crystal display screen 11 can be welded.

[0035] On the basis of the above embodiment: the base plate 3 is provided with an empty slot 2 for the finger to be inserted into and take down the positioning cover plate 5.

[0036] The specific improvement is that: as shown in the figure Figure 2 After the welding is completed, the finger is inserted into the empty slot 2, the finger can hold the positioning cover plate 5, and the positioning cover plate 5 can be taken down.

[0037] Obviously, the above embodiment is only an example for clear illustration, and is not a limitation on the implementation. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the implementation is not required and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A liquid crystal screen welding device, characterized in that: The LCD screen includes a PCB board (10), a backlight module (1) disposed above the PCB board (10), and an LCD display screen (11) disposed above the backlight module (1). The LCD screen welding device includes a substrate (3). The substrate (3) is provided with a plurality of placement cavities (31) for placing the PCB board (10). The placement cavity (31) is provided with a relief groove (32) to avoid the welding point. The upper and lower ends of the placement cavity (31) are provided with positioning pieces (4). The lower end surface of the positioning piece (4) can abut against the upper end surface of the PCB board (10). The positioning cover plate (5) is provided above the positioning piece (4).

2. The LCD screen welding device according to claim 1, characterized in that: The substrate (3) is provided with a positioning post (33) for the positioning piece (4) to be inserted, and the positioning piece (4) is provided with a positioning groove (41) that is adapted to the positioning post (33).

3. The LCD screen welding device according to claim 2, characterized in that: The positioning piece (4) is provided with an extension piece (42) extending to the upper end face of the PCB board (10), and the liquid crystal display screen (11) covers the extension piece (42). The positioning piece (4) is also provided with a clearance arc surface (6) for avoiding parts on the PCB board (10).

4. The LCD screen welding device according to claim 3, characterized in that: The substrate (3) is provided with a positioning pin (7), and the positioning cover plate (5) is provided with a circular groove (8) that can be inserted into the positioning pin (7).

5. The LCD screen welding apparatus according to claim 4, characterized in that: The circular groove (8) is provided with an opening for the positioning pin (7) to be inserted.

6. A liquid crystal screen welding apparatus according to any one of claims 1-5, characterized in that: The substrate (3) is provided with a slot (2) for inserting a finger to remove the positioning cover plate (5).

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