A soldering mechanism for processing LCD liquid crystal display screen

Abstract

The present invention relates to a soldering mechanism, and more specifically, to a soldering mechanism for processing LCD liquid crystal display screens. The mechanism comprises an air supply component, a pair of toggle components and a pair of guide cavity plates. The present invention sets a guide cavity plate to cooperate with the toggle component to deflect back and forth up and down, and during the soldering process, the guide cavity plates on both sides deflect away from the guide cavity plate and do not participate in the smoke extraction work, thereby reserving solidification time for the solder area, preventing continuous suction from damaging the shape of the solder area and affecting the soldering effect. At the same time, after the soldering work is completed, the solder rack cooperates with the toggle component to drive the two guide cavity plates to reset, and through the negative pressure provided by the air supply component, the smoke around the solder area is extracted from far to near, thereby increasing the smoke extraction range and avoiding the smoke escape phenomenon.

Description

Technical Field

[0001] The invention relates to a soldering mechanism, in particular to a soldering mechanism for processing an LCD liquid crystal display screen. Background Art

[0002] The structure of LCD is to place a liquid crystal box between two parallel glass substrates, set TFT on the lower substrate glass, and set color filter on the upper substrate glass. The signal and voltage on the TFT are changed to control the rotation direction of the liquid crystal molecules, so as to control whether the polarized light of each pixel is emitted or not to achieve the display purpose. When LCD is produced, soldering is required. At present, fully automatic soldering machines are generally used for soldering. During the soldering process, a small amount of smoke will be generated. Traditional fully automatic soldering machines use automatic smoke extraction equipment to extract smoke, but there are still the following problems:

[0003] First, during the soldering process, electronic components of different sizes need to be soldered, and the corresponding amount of solder will also be different. Traditional smoke extraction equipment cannot adapt to the smoke extraction work of different soldering parts, resulting in some small solder areas being directly sucked without being fully solidified, which is easy to cause shape changes and even solder gaps, affecting the soldering effect.

[0004] Second, another way to deal with it is to start the automatic smoke extraction equipment to extract the smoke after the soldering is completed. However, the smoke generated during the soldering process will spread to the surroundings, and the automatic smoke extraction equipment with a constant suction area is difficult to fully extract the smoke, resulting in some smoke remaining.

[0005] In order to deal with the above problems, there is an urgent need for a soldering mechanism for LCD liquid crystal display processing with a smoke extraction function. Summary of the invention

[0006] The purpose of the present invention is to provide a soldering mechanism for processing LCD liquid crystal display screens to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, a soldering mechanism for processing an LCD liquid crystal display screen is provided, comprising a soldering table and a soldering device installed on the top of the soldering table, a pair of brackets are arranged on the top of the soldering table, a positioning structure is connected between the two brackets, the soldering device is slidably arranged on the side of the positioning structure, a solder rack is slidably connected to the bottom end of the side of the soldering device, a solder head for soldering is connected to the bottom end of the solder rack, drainage cavity plates for airflow guidance are arranged on both sides of the soldering device, and air supply components that are connected to the drainage cavity plates at corresponding positions are arranged on both sides of the top of the soldering device;

[0008] The bottom end of the drainage cavity plate is hinged with a guide cavity plate, the guide cavity plate is in a V-shaped structure, and the bottom end port of the guide cavity plate faces the soldering position of the solder head, and a toggle assembly is connected between the side of the solder rack and the side of the bottom end of the guide cavity plate;

[0009] When the solder rack completes the soldering work and resets to move upward, it cooperates with the air supply component to generate negative pressure at the inner end of the drainage cavity plate. At the same time, the solder rack drives the toggle components on both sides to move upward synchronously, driving the two guide cavity plates to move closer to the solder position of the solder rack from far to near, and using the negative pressure state to draw the smoke passing through the area inward from the port.

[0010] As a further improvement of the present technical solution, the air supply assembly includes a pair of air bags, and drainage tubes are connected between the air bags on both sides and the top ends of the drainage cavity plates on the corresponding sides, and pressure frames are provided at both ends of the side of the solder rack, and the top ends of the two pressure frames are respectively located at the top positions of the two air bags.

[0011] As a further improvement of the present technical solution, hinge shafts are arranged between the two sides of the top of the guide cavity plate and the two sides of the bottom of the drainage cavity plate. The guide cavity plate is rotationally connected to the bottom of the drainage cavity plate through the hinge shaft, and an inner soft plate is conductively connected between the inner ends of the drainage cavity plates.

[0012] As a further improvement of the technical solution, an exhaust pipe is connected between the two airbag sides, and a one-way valve is provided on the exhaust pipe and the inner ends of the two drainage tubes. The one-way valve cooperates with the exhaust pipe to realize one-way exhaust operation and one-way air suction operation of the two drainage tubes.

[0013] As a further improvement of the technical solution, the toggle assembly includes a blocking frame and an end shaft arranged at an end position of the blocking frame.

[0014] As a further improvement of the technical solution, rollers are provided at both ends of the end shaft, and the rollers are rotationally connected to the end shaft.

[0015] As a further improvement of the technical solution, a port cavity plate is hingedly connected to the bottom end of the guide cavity plate, and the port cavity plate is rotationally connected to the bottom end of the guide cavity plate. A flexible cavity plate is conductively connected between the inner end of the port cavity plate and the inner end of the guide cavity plate.

[0016] As a further improvement of the technical solution, a torsion spring is connected between the hinge position of the port cavity plate and the guide cavity plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the soldering mechanism for processing LCD display screens, the guide cavity plate is arranged to cooperate with the toggle assembly to deflect back and forth up and down, and during the soldering process, the guide cavity plates on both sides are deflected away from the guide cavity plate and do not participate in the smoke extraction work, thereby reserving solidification time for the soldering area to prevent continuous suction from damaging the shape of the soldering area and affecting the soldering effect. At the same time, after the soldering work is completed, the solder rack cooperates with the toggle assembly to drive the two guide cavity plates to reset, and through the negative pressure provided by the air supply assembly, the smoke around the soldering area is extracted from far to near, thereby increasing the smoke extraction range and avoiding smoke escape.

[0019] 2. In the soldering mechanism for processing LCD display screens, a port cavity plate hinged to the bottom end of the guide cavity plate is provided to replace the guide cavity plate to contact the edge of the LCD display screen main board, and deflects toward the solder head during the contact process. The torsion spring is compressed to offset the pressure exerted by the edge of the LCD display screen on it, thereby avoiding contact collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic plan view of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the soldering device of the present invention;

[0023] Figure 4 For the present invention Figure 3 A local enlarged view of point A;

[0024] Figure 5 For the present invention Figure 3 A partial enlarged view of point B;

[0025] Figure 6 This is a disassembled diagram of the drainage cavity plate structure of the present invention;

[0026] Figure 7 It is a working schematic diagram of the soldering device of the present invention.

[0027] The meaning of each number in the figure is:

[0028] 10. Soldering table; 110. Bracket; 120. Position adjustment structure;

[0029] 20. Soldering device; 210. Soldering rack; 211. Soldering head; 212. Barrier rack; 213. End shaft; 214. Roller; 220. Air bag; 221. Drainage tube; 222. Exhaust pipe; 230. Drainage cavity plate; 231. Guide cavity plate; 232. Articulated shaft; 233. Inner soft plate; 234. Port cavity plate; 235. Flexible cavity plate; 240. Press frame. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] See also Figure 1-Figure 2 As shown, a soldering mechanism for processing an LCD liquid crystal display screen is provided, comprising a soldering platform 10 and a soldering device 20 installed on the top of the soldering platform 10, a pair of brackets 110 are arranged on the top of the soldering platform 10, a positioning structure 120 is connected between the two brackets 110, the soldering device 20 is slidably arranged on the side of the positioning structure 120, a solder rack 210 is slidably connected to the bottom end of the side of the soldering device 20, a solder head 211 for soldering is connected to the bottom end of the solder rack 210, a drainage cavity plate 230 for guiding airflow is arranged on both sides of the soldering device 20, and an air supply component that is connected to the drainage cavity plate 230 at the corresponding position is arranged on both sides of the top of the soldering device 20;

[0033] The bottom of the drainage cavity plate 230 is hinged with a guide cavity plate 231, the guide cavity plate 231 is in a V-shaped structure, and the bottom end of the guide cavity plate 231 faces the soldering position of the solder head 211, and a toggle assembly is connected between the side of the solder rack 210 and the side of the bottom end of the guide cavity plate 231;

[0034] When the solder rack 210 completes the soldering work and resets to move upward, the air supply component cooperates to generate negative pressure at the inner end of the drainage chamber plate 230. At the same time, the solder rack 210 drives the toggle components on both sides to move upward synchronously, driving the two guide chamber plates 231 from far to near to the solder position of the solder rack 210, and using the negative pressure state to draw the smoke passing through the area inward from the port.

[0035] When used specifically, during the soldering process of the LCD display mainboard, the LCD display mainboard to be soldered is first placed on the top of the soldering table 10, and the position of the soldering frame 210 is adjusted by the adjustment structure 120 and the soldering device 20, so that the soldering work can be performed along the top of the LCD display mainboard;

[0036] During the soldering process, the solder rack 210 is driven by the soldering device 20 to slide up and down along its side, and the bottom end of the solder rack 210 is adjusted to the soldering position. During this process, the solder rack 210 drives the toggle components on both sides to move downward synchronously, driving the guide cavity plates 231 on both sides to deflect away from the solder rack 210.

[0037] After the soldering work is completed, Figure 7 As shown, the solder rack 210 drives the toggle components on both sides to move downward and upward synchronously, and the guide cavity plates 231 on both sides are reset and gradually approach the bottom position of the solder rack 210. During this process, the air supply component is in a negative pressure state, and the air supply component and the guide cavity plate 230 and the guide cavity plate 231 are all in a conductive state. The air supply component under the negative pressure state will draw air inward through the bottom port of the guide cavity plate 231, that is, the guide cavity plate 231 approaches the bottom end of the solder head 211 from far to near, and the smoke in the area passing through its port is drawn into it.

[0038] In addition, by Figure 3 As shown, the air supply assembly includes a pair of air bags 220, and drainage tubes 221 are connected between the air bags 220 on both sides and the top of the drainage cavity plate 230 on the corresponding side, and pressure frames 240 are provided at both ends of the side of the solder rack 210, and the tops of the two pressure frames 240 are respectively located at the top positions of the two air bags 220;

[0039] Depend on Figure 6 As shown, hinge shafts 232 are provided between the two sides of the top of the guide cavity plate 231 and the two sides of the bottom of the drainage cavity plate 230. The guide cavity plate 231 is rotatably connected with the bottom of the drainage cavity plate 230 through the hinge shafts 232. An inner soft plate 233 is conductively connected between the inner end of the drainage cavity plate 230 and the inner end of the guide cavity plate 231.

[0040] Depend on Figure 5 As shown, an exhaust pipe 222 is connected between the sides of the two airbags 220, and a one-way valve is provided at the inner end of the exhaust pipe 222 and the two drainage tubes 221, and cooperates with the one-way valve to realize one-way exhaust work of the exhaust pipe 222 and one-way suction work of the two drainage tubes 221.

[0041] During specific use, when the solder rack 210 slides downward along the side of the soldering device 20, the solder rack 210 will synchronously drive the two pressure racks 240 to move downward, and the top of the pressure rack 240 is located above the air bag 220. When the pressure rack 240 moves downward, pressure will be applied to the top of the air bag 220 to discharge the gas at its inner end into the inner end of the exhaust pipe 222. It is worth noting that during actual operation, the end of the exhaust pipe 222 will be connected to a pipe or box specifically for collecting smoke to collect and process the smoke in a centralized manner. When the drainage tube 221 completes the soldering work, the solder rack 210 drives the two pressure racks 240 to move upward synchronously. At this time, the two air bags 220 lose their squeezing and will reset upward, and generate negative pressure in the drainage tube 221, the drainage cavity plate 230, the inner soft plate 233 and the inner end of the guide cavity plate 231, so that the bottom end port of the guide cavity plate 231 sucks the smoke in the area it passes through, and extracts the smoke remaining at different positions in the soldering area.

[0042] Further, by Figure 3-Figure 4 As shown, the toggle assembly includes a blocking frame 212 and an end shaft 213 disposed at the end of the blocking frame 212;

[0043] Depend on Figure 4 As shown, rollers 214 are provided at both ends of the end shaft 213 , and the rollers 214 are rotationally connected to the end shaft 213 .

[0044] When in use, during the upward movement of the solder rack 210, since the blocking rack 212 is tilted downwardly and arranged at the side of the solder rack 210, the gap between the blocking rack 212 and the guide cavity plate 231 in the upward state gradually increases, and the guide cavity plate 231 will be deflected toward the position close to the end shaft 213 due to its own gravity, so that the end shaft 213 connected to the end of the blocking rack 212 always slides from bottom to top along the side of the guide cavity plate 231. During this process, the bottom end port position of the guide cavity plate 231 will gradually approach the bottom end of the solder head 211, and the smoke passing through the area will be drawn into it from far to near;

[0045] As the side of the end shaft 213 slides along the side of the guide cavity plate 231, friction resistance will be generated at the contact position between the two, and this friction resistance is always opposite to the movement direction of the end shaft 213, hindering the sliding of the end shaft 213. The roller 214 is set to replace the end shaft 213 to contact the side of the guide cavity plate 231. On the one hand, the contact area between the two is reduced, and the contact area is proportional to the friction resistance. Reducing the contact area means reducing the friction resistance between the two. On the other hand, the roller 214 maintains a rotational connection with the end shaft 213, further reducing the obstruction encountered by the roller 214 during its movement along the side of the guide cavity plate 231, thereby improving the position adjustment efficiency of the guide cavity plate 231.

[0046] Further, by Figure 6As shown, the bottom end of the guide cavity plate 231 is hinged with a port cavity plate 234, the port cavity plate 234 is rotatably connected to the bottom end of the guide cavity plate 231, and a flexible cavity plate 235 is conductively connected between the inner end of the port cavity plate 234 and the inner end of the guide cavity plate 231;

[0047] Depend on Figure 6 As shown, a torsion spring is connected between the port cavity plate 234 and the hinged position of the guide cavity plate 231. In specific use, during the soldering process of the edge electronic components, the bottom end of the guide cavity plate 231 deflected outward is easy to contact the edge of the LCD liquid crystal display screen main board, and the guide cavity plate 231 blocked by the edge of the main board will be deformed due to the force, which is likely to block its bottom port, affecting the subsequent smoking work, and also causing wear to the edge of the LCD liquid crystal display screen main board, affecting its later use. At this time, the port cavity plate 234 hinged to the bottom end of the guide cavity plate 231 is set to replace the guide cavity plate 231 to contact the edge of the LCD liquid crystal display screen main board, and deflects toward the direction of the solder head 211 during the contact process, and the pressure applied to it by the edge of the LCD liquid crystal display screen is offset by the compression of the torsion spring, avoiding contact collision, and after the port cavity plate 234 is separated from the contact position with the edge of the LCD liquid crystal display screen, the torsion spring is used to drive the port cavity plate 234 to reset and restore to the initial position for subsequent smoking work.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soldering mechanism for processing an LCD liquid crystal display screen, comprising a soldering platform (10) and a soldering device (20) mounted on the top of the soldering platform (10), wherein a pair of brackets (110) are arranged on the top of the soldering platform (10), a positioning structure (120) is connected between the two brackets (110), the soldering device (20) is slidably arranged on the side of the positioning structure (120), a soldering frame (210) is slidably connected to the bottom end of the side of the soldering device (20), and a soldering head (211) for soldering is connected to the bottom end of the soldering frame (210), wherein the soldering head (211) for soldering is connected, wherein: Drainage cavity plates (230) for guiding airflow are provided on both sides of the soldering device (20), and air supply components are provided on both sides of the top of the soldering device (20) and are in communication with the drainage cavity plates (230) at corresponding positions; The bottom end of the drainage cavity plate (230) is hingedly connected to a guide cavity plate (231), the guide cavity plate (231) is in a V-shaped structure, and the bottom end port of the guide cavity plate (231) faces the soldering position of the solder head (211), and a toggle assembly is connected between the side of the solder rack (210) and the side of the bottom end of the guide cavity plate (231); When the solder rack (210) completes the soldering work and resets and moves upward, the air supply component cooperates to generate negative pressure at the inner end of the drainage cavity plate (230), and at the same time, the solder rack (210) drives the two side toggle components to move upward synchronously, driving the two drainage cavity plates (231) to move closer to the soldering position of the solder rack (210) from far to near, and using the negative pressure state to draw smoke from the port inwards through the area; The air supply assembly comprises a pair of air bags (220), the air bags (220) on both sides are connected to the top of the drainage cavity plate (230) on the corresponding side by a drainage tube (221), and both ends of the side of the solder rack (210) are provided with a pressing frame (240), and the top of the two pressing frames (240) are respectively located at the top of the two air bags (220); Hinge shafts (232) are provided between the two sides of the top end of the guide cavity plate (231) and the two sides of the bottom end of the guide cavity plate (230); the guide cavity plate (231) is rotatably connected to the bottom end of the guide cavity plate (230) via the hinge shafts (232); an inner soft plate (233) is conductively connected between the inner end of the guide cavity plate (230) and the inner end of the guide cavity plate (231); The bottom end of the guide cavity plate (231) is hingedly connected to a port cavity plate (234), the port cavity plate (234) is rotationally connected to the bottom end of the guide cavity plate (231), and a flexible cavity plate (235) is conductively connected between the inner end of the port cavity plate (234) and the inner end of the guide cavity plate (231); A torsion spring is connected between the hinged position of the port cavity plate (234) and the guide cavity plate (231).

2. The soldering mechanism for processing LCD display screens according to claim 1, characterized in that: An exhaust pipe (222) is connected between the sides of the two air bags (220), and one-way valves are provided at the inner ends of the exhaust pipe (222) and the two drainage pipes (221). The one-way valves cooperate with each other to achieve one-way exhaust operation of the exhaust pipe (222) and one-way air extraction operation of the two drainage pipes (221).

3. The soldering mechanism for LCD display processing according to claim 1, characterized in that: The toggle assembly comprises a blocking frame (212) and an end shaft (213) arranged at an end position of the blocking frame (212).

4. The soldering mechanism for LCD display processing according to claim 3, characterized in that: Rollers (214) are provided at both ends of the end shaft (213), and the rollers (214) are rotationally connected to the end shaft (213).

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