A jig for processing P-plates

Abstract

This utility model discloses a fixture for P-board processing, belonging to the technical field of circuit board manufacturing. It solves the problem of controller chip pins detaching from the circuit board when impacted by the upward wave of liquid solder, thus affecting the soldering quality of the controller chip. The technical solution mainly involves a PCB board with multiple insertion holes. The fixture includes a board body with multiple insertion components, each corresponding to a insertion hole. When the heat sink is not mounted on the PCB board, the insertion components are inserted into the corresponding insertion holes and press against the controller chip, allowing the controller chip pins to pass through the PCB board and remain extended for soldering. This utility model primarily positions the board body on the P-board using the insertion components and insertion holes, pressing the board body downwards against the controller chip. This effectively prevents the controller chip from being impacted by the upward wave of liquid solder, which could cause pins to detach from the P-board and affect the soldering quality.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit board processing and manufacturing, and in particular to a fixture for processing P-boards. Background Technology

[0002] Circuit boards are a common type of electronic device. With the development of technology and continuous innovation in intelligence, electronic products such as mobile phones, cameras, washing machines, refrigerators, and televisions are constantly being updated and replaced, and the demand for circuit boards has increased dramatically. The functions of circuit boards are also increasing with people's needs, and the processing difficulty of circuit boards is also increasing. In order to improve the efficiency of circuit board processing, existing circuit boards are generally processed using intelligent production lines.

[0003] The prior art CN201810114530.7 discloses a wave soldering furnace. The horizontally arranged furnace body has a feeding end and a discharging end. Two conveyor chain claws are respectively assembled on the guide rails of the furnace body. The conveyor chain claws circulate between the feeding end and the discharging end of the furnace body. A flux spraying device, a preheating device, a wave soldering device, and a cooling device are arranged sequentially along the feeding direction of the conveyor chain claws inside the furnace body. An exhaust device is arranged above the flux spraying device. A smoke alarm is installed inside the furnace body above the preheating device. The preheating device has heating modules placed on the upper and lower sides of the conveyor chain claws. The wave soldering device is assembled into the furnace body by movable splicing. The furnace body has reserved channels for the wave soldering device to enter and exit the furnace body, which facilitates maintenance and replacement, helps with continuous production, and has the advantages of upper and lower side heating.

[0004] In the aforementioned prior art, although wave soldering significantly improves soldering efficiency compared to manual soldering, the circuit board is mounted on a conveyor belt with the pins extending to the underside of the board. During wave soldering, the liquid solder in the solder bath of the wave soldering device forms a solder wave that contacts the pins and the board during the board's transport. The liquid solder adheres to the pins after contact and is then cooled by a cooling device, thus soldering the pins and board together. During soldering, the upward contact of the wave solder with the pins creates an upward impact. For controller chips, which are small and lightweight, and whose pins are essentially bent and inserted downwards into pin sockets on the circuit board, this upward impact could cause the pins to push the controller chip upwards and disengage from the pin sockets, thus affecting the soldering quality of the controller chip. Utility Model Content

[0005] The purpose of this invention is to provide a fixture for processing P-boards, where P-boards are PCBs. This fixture addresses the problem of controller chip pins detaching from the circuit board when impacted by the upward wave of liquid solder, thus affecting the soldering quality of the controller chip. By using connectors and holes to position the board on the PCB, the board presses downward against the controller chip, effectively preventing the controller chip from being impacted by the upward wave of liquid solder, which could cause the pins to detach from the PCB and affect the soldering quality of the controller chip.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a P-board processing fixture, wherein the PCB board is provided with a plurality of insertion holes for connecting to heat sink pins, the plurality of insertion holes are arranged around the controller chip, the fixture includes a board body, the board body is provided with a plurality of plug-in components, the plurality of plug-in components are arranged one-to-one with the plurality of insertion holes, when the heat sink is not assembled on the PCB board, the plug-in components are inserted into the corresponding insertion holes and pressed down against the controller chip, so that the pins of the controller chip pass through the PCB board and remain in an extended state for soldering.

[0007] After adopting the above technical solution, this utility model has the following advantages: Before the PCB board enters the wave soldering equipment, the board body is stably installed on the PCB board by the insertion of connectors and connector holes, and by the cooperation of multiple connector holes and multiple connectors, ensuring that the board body stably shields the controller chip. Then, the board body is pressed down appropriately to ensure that the board body is pressed against the upper surface of the controller chip, so that the pins of the controller chip remain protruding from the lower side of the PCB board. When the board body enters the wave soldering equipment with the PCB board, when the liquid solder impacts the pins of the controller chip upwards, the controller chip does not have the space or tendency to move upwards because it is pressed down by the board body, effectively avoiding the possibility that the upward movement of the controller chip pins will affect the soldering quality of the controller chip. The connector holes are opened on the PCB board for mounting heat sinks. The positions of multiple connectors are set directly by the position and number of connector holes, without the need to process additional connector holes on the PCB board to stably place the board body, thereby reducing the cost of modifying the PCB board.

[0008] Furthermore, the controller chip is provided with two positioning notches, which are located at opposite ends of the controller chip. The board is provided with positioning components, which extend into the positioning notches as the connector is inserted to position the controller chip.

[0009] Using the aforementioned technical solution, after the pins of the controller chip are inserted into the PCB board, the controller chip deviates from its predetermined installation position when the pins are inserted at an angle. By inserting the positioning components and positioning notches, when the board presses against the controller chip, the two positioning components gradually move the offset controller chip to the predetermined position as the positioning components are inserted, ensuring that the controller chip is installed in the predetermined position after the board is pressed against it, effectively avoiding the impact of pin tilting on the soldering effect of the controller chip.

[0010] Furthermore, it also includes a pressing part, and the plate has a pressing surface for pressing the controller chip. The pressing part is disposed on the pressing surface, and the pressing part and the pressing surface press the controller chip of different thicknesses respectively.

[0011] Using the aforementioned technical solution, existing household washing machines, in addition to basic washing functions, also have drying functions as people's needs increase. The washing and drying functions are controlled by different controller chips with different thicknesses. To ensure that chips of different thicknesses can be pressed against the board to ensure the welding effect, the pressing part is set on the pressing surface. When the board presses down on the controller chip, the pressing part presses against the thinner controller chip, ensuring that both controller chips can be pressed against to ensure that the pins remain in the extended state. This ensures the quality of the simultaneous wave soldering of the two controller chips and effectively avoids the thinner controller chip not being pressed against, which would affect the welding quality.

[0012] Furthermore, the connector includes a mounting part and a plug-in part integrally connected to the mounting part. The mounting part is fastened to the plate body by a locking member, and the plug-in part is inserted into the plug-in hole to position the plate body.

[0013] By adopting the aforementioned technical solution, the connector is configured with a mounting part and a plug-in part. The plug-in part is inserted into the plug-in hole on the PCB board, ensuring that the board body can be stably inserted into the PCB board and pressed against the controller chip, thereby ensuring the stability of the controller chip during the soldering process. The mounting part is fastened to the board body by a locking part, ensuring the stability of the mounting part and the plug-in part on the board body. At the same time, damaged mounting parts and plug-in parts can be replaced by using the locking part to ensure the stability of the board body pressing against the controller chip. In addition, when the position of the plug-in hole does not correspond to the plug-in part, a new mounting part and plug-in part can be replaced by using the locking part to ensure that the plug-in part can be inserted into the plug-in hole to press against the controller chip, thereby ensuring the soldering quality of the controller chip.

[0014] Furthermore, the mounting part has a receiving groove on the side opposite to the insertion part, and the insertion part is inserted into the receiving groove when the plates are stacked vertically.

[0015] Using the aforementioned technical solution, the boards are usually stacked together when not in use. By setting a receiving groove on the side of the mounting part away from the plug-in part, when not in use, the plug-in part can be inserted into the receiving groove on another board, and multiple boards can be neatly stacked together, effectively avoiding the possibility of collision and damage caused by messy stacking of boards.

[0016] Furthermore, the opening of the receiving groove is located on a guide slope.

[0017] By adopting the aforementioned technical solution, a guide slope is set at the opening of the receiving groove to guide the insertion part into the receiving groove, thereby improving the efficiency of multiple plates being inserted and stacked together.

[0018] Furthermore, the plate is provided with clearance openings to avoid electronic components.

[0019] By adopting the aforementioned technical solution, a clearance opening is provided on the board to avoid the possibility of damage to other electronic components when the board presses against the controller chip.

[0020] Furthermore, the plate body is provided with two bosses for detaching the plate body from the PCB board. The two bosses are parallel and spaced apart, and the two bosses protrude from the upper surface of the plate body so that the clamps can hold the opposite sides of the two bosses.

[0021] By employing the aforementioned technical solution, two protrusions are spaced apart and parallel on the board. When the board needs to be picked up, the operator can place the board on the PCB by holding it on the opposite sides of the two protrusions with one hand. The two protrusions facilitate holding and moving the board. When using a clamp to place or pick up the board, since the protrusions are located on the upper surface of the board and protrude upwards, the clamp can pick up the board by using the protrusions, effectively avoiding the possibility of the clamp colliding with the electronic components on the PCB and causing damage to the electronic components.

[0022] Furthermore, the top of the two opposite side walls of the two bosses are provided with ribs, which extend from the side wall of the boss in a direction away from the other boss.

[0023] By adopting the aforementioned technical solution, ribs are provided at the top of the two side walls opposite to the boss, and a step is formed between the ribs and the boss. The operator's hand or clamp abuts against the ribs, which improves the stability of the hand gripping or the clamp holding, thereby ensuring the stability of the board during the movement of the board and effectively avoiding the possibility of the board falling off the clamp and hitting the PCB board.

[0024] Furthermore, the distance between the upper surface of the boss and the upper surface of the plate is D1, and the distance between the upper surface of the connector and the upper surface of the plate is D2, where D2 ≧ D1.

[0025] By adopting the aforementioned technical solution, the height of the boss is set to be lower than the height of the upper surface of the connector, so that when multiple plates are stacked, the upper plate abutting against the boss does not affect the stability of the plate stacking; effectively avoiding the possibility of the plate tipping over and being damaged by impact. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a fixture for processing P-plates according to the present invention; Figure 2 This is an exploded view of a P-plate processing fixture according to the present invention; Figure 3 This is a schematic diagram of the structure of the plate body and the pressing part of this utility model; Figure 4 This is a schematic diagram of the connector structure in this utility model; Figure 5 This is a schematic diagram of the installation of the boss and the connector in this utility model. Detailed Implementation

[0027] 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 embodiments of this utility model, and not all embodiments.

[0028] The terms "first," "second," etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects, not to describe a specific order or sequence. Even if "second" is used before a technical feature for distinction, it does not necessarily imply the presence of "first." It should be understood that in this utility model, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. It should be understood that in this utility model, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, and Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Containing X, Y, and Z," "Containing X, Y, and Z" means that all three X, Y, and Z are included; "Containing X, Y, or Z" means that one of X, Y, and Z is included; "Containing X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are included.

[0029] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0030] like Figure 1 and Figure 2 As shown, this utility model provides a fixture for processing P-boards, where P-board refers to PCB boards, or printed circuit boards. The PCB board 3 has multiple insertion holes 32 for connecting to heat sink pins. These insertion holes 32 surround a controller chip 31. The fixture includes a board body 1 with multiple connectors 2. Each connector 2 corresponds to one of the insertion holes 32. When no heat sink is installed on the PCB board 3, to ensure the pins of the controller chip 31 remain plugged in and extended, the connectors 2 are inserted into the insertion holes 32, causing the board body 1 to press down on the controller chip 31, allowing the pins of the controller chip 31 to pass through the PCB board 3 and remain extended for soldering. Specifically, the connectors 2 are inserted into the insertion holes 32... With proper engagement, the upper surface of board 1, close to PCB board 3, presses against controller chip 31 as connector 2 is inserted, ensuring that the pins of controller chip 31 remain extended. This effectively prevents the pins of controller chip 31 from moving upwards under the impact of the wave soldering peaks, thus ensuring that the wave soldering solder adheres to the pins and PCB board 3, thereby ensuring the soldering quality of controller chip 31. The connector hole 32 is subsequently used for positioning and installing the heat sink on PCB board 3. In other words, by using the existing connector hole 32 on PCB board 3 for heat sink installation and the multiple connectors 2 on board 1 for engagement, there is no need to additionally process connector holes 32 on PCB board 3 to stably place board 1, thereby reducing the cost of modifying PCB board 3.

[0031] After the pins of the controller chip 31 are plugged into the PCB board 3, tilting the pins during plugging causes the controller chip 31 to deviate from its intended mounting position, such as... Figure 2As shown, in order to ensure that the controller chip 31 can be accurately installed in the predetermined position after the pins of the controller chip 31 are plugged into the PCB board 3, the controller chip 31 is provided with two positioning notches 311, which are respectively located at opposite ends of the controller chip 31. The board body 1 is provided with a positioning member 12, which extends into the positioning notch 311 along with the plug-in member 2 to position the controller chip 31. Specifically, during the process of inserting the plug-in member 2 into the plug-in hole 32, the positioning member 12 extends into the positioning notch 311 along with the plug-in member 2. When the controller chip 31 is offset from the predetermined installation position, the offset controller chip 31 is reset by the plug-in member 12 and the positioning notch 311. This ensures that the controller chip 31 reaches the predetermined installation position before soldering after the pins are plugged in and the board body 1 is pressed against it, effectively preventing the controller chip 31 from being soldered and fixed when it is deviated from the predetermined position, and improving the quality of the soldering and fixing of the controller chip 31.

[0032] With increasing consumer demand, existing household washing machines, in addition to basic washing functions, also include drying functions. These washing and drying functions are controlled by different controller chips 31, which have different thicknesses. To ensure that chips of varying thicknesses can be pressed together by a fixture to guarantee welding quality, such as... Figure 3 As shown, the fixture also includes a pressing part 13. The board body 1 has a pressing surface 101 for pressing the controller chip 31. The pressing part 13 is disposed on the pressing surface 101. The pressing part 13 and the pressing surface 101 press the controller chip 31 of different thicknesses respectively. Specifically, the pressing surface 101 presses the thicker controller chip 31, and the pressing part 13 presses the thinner controller chip 31, so that both controller chips 31 of different thicknesses are pressed, thereby ensuring the stability of the controller chips 31 of different thicknesses on the PCB board 3 and the soldering quality after wave soldering.

[0033] In another embodiment, to improve the applicability of plate 1, such as Figure 2 and Figure 4As shown, the connector 2 includes a mounting portion 21 and a connector portion 22 integrally connected to the mounting portion 21. The mounting portion 21 includes a first mounting body 211 and a second mounting body 212. The lower surface of the first mounting body 211 forms a mounting surface that abuts against the board body 1. The second mounting body 212 is flush with the board body 1. The connector portion 22 is located on the lower surface of the second mounting body 212. The mounting portion 21 is fastened to the board body 1 by a locking member. The locking member passes through the mounting surface and is fastened to the board body 1. The connector portion 22 is used to connect to the connector hole 32 for use on the PCB board. 3. Positioning board 1; The mounting part 21 is locked in place by a locking member. On the one hand, when there is a positional deviation between the plug part 22 and the plug hole 32, the mounting part 21 can be removed from the board 1 by the locking member, and the mounting part 21 and plug part 22 that are compatible with the plug hole 32 can be replaced. On the other hand, when the plug part 22 is worn, the mounting part 21 can be removed from the board 1 by the locking member, and a new mounting part 21 and plug part 22 can be replaced to ensure the stability of the board 1 on the PCB board 3 after the plug part 22 is plugged into the plug hole 32.

[0034] In this embodiment, to facilitate the stacking of multiple plates 1, such as Figure 4 As shown, the mounting part 21 has a receiving groove 23 on the side opposite to the insertion part 22. When the board 1 does not need to press against the controller chip 31, it is inserted into the receiving groove 23 on another board 1, thereby neatly stacking multiple boards 1. Specifically, the board 1 is neatly stacked for subsequent use by inserting the insertion part 22 into the receiving groove 23, effectively avoiding the possibility of damage caused by collision between multiple boards 1. In addition, after the PCB board 3 is soldered in the wave soldering equipment, the board 1 placed on the PCB board 3 needs to be removed and stacked by inserting the insertion part 22 into the receiving groove 23, which facilitates the stable transfer of the board 1 to the front end of the wave soldering.

[0035] like Figure 4 As shown, in order to facilitate the insertion part 22 to enter the receiving groove 23, a guide slope 231 is provided at the opening of the receiving groove 23. When multiple plates 1 need to be stacked neatly, the guide slope 231 guides the insertion part 22, improving the efficiency of the insertion part 22 entering the receiving groove 23. Moreover, the setting of the guide slope 231 increases the opening of the receiving groove 23, reducing the difficulty of the insertion part 22 entering the receiving groove 23.

[0036] like Figure 2 and Figure 3 As shown, in order to avoid the possibility of damage caused by the board 1 pressing against other electronic components after it is installed on the PCB board 3, the board 1 is provided with a clearance opening 11 to avoid electronic components; specifically, the connector 2 is inserted into the connector hole 32, so that when the board 1 presses against the controller chip 31, the electronic components that do not need to be pressed are avoided in the clearance opening 11, which effectively avoids the possibility of damage caused by the board 1 pressing against the electronic components that do not need to be pressed.

[0037] In another embodiment, such as Figure 3 As shown, in order to facilitate the picking or clamping of the board 1, a boss 4 is provided on the board 1 to assist in the disassembly of the board 1 from the PCB board 3. The two bosses 4 are parallel and spaced apart, and the two bosses 4 protrude from the upper surface of the board 1 so that the clamp can hold the two opposite side walls of the two bosses 4. After the controller chip 31 is soldered and fixed, when the board 1 is disassembled from the PCB board 3 by the clamp, the two jaws of the clamp abut against the two opposite side walls of the two bosses 4 respectively. By clamping the two bosses 4, the board 1 is disassembled from the PCB board 3. The setting of the bosses 4 protruding from the surface of the board 1 effectively avoids the possibility of the clamp colliding with the PCB board 3 during the disassembly process and causing damage to the PCB board 3.

[0038] To improve the stability of the clamp holding the boss 4, such as Figure 3 and Figure 5 As shown, the top of the two opposing side walls of the two bosses 4 are provided with ribs 41. The ribs 41 extend in a direction away from the other boss 4, so that a step is formed between the ribs 41 and the opposing side walls of the bosses 4. When the clamping jaws abut against the opposing side walls of the bosses 4, they abut against the step formed by the ribs 41 and the bosses 4, which improves the stability of the bosses 4 after they are clamped and effectively avoids the possibility of the plate 1 falling off the clamp.

[0039] In another embodiment, such as Figure 3 and Figure 5 As shown, the plate 1 is square in shape, and there are four connectors 2. The four connectors 2 are located at the four corners of the plate 1. The boss 4 is located in the area enclosed by the four connectors 2. To ensure that the plates 1 can be stacked neatly and stably, the distance between the upper surface of the boss 4 and the upper surface of the plate 1 is D1, and the distance between the upper surface of the connector 2 and the upper surface of the plate 1 is D2, D2≧D1. This makes the upper surface of the boss 4 lower than the upper surface of the connector 2, or the upper surface of the boss 4 is flush with the upper surface of the connector 2. When the plates 1 are stacked, the upper plate 1 is supported by the connectors 2 located on the side, ensuring the stability of the stacked plates 1 and effectively preventing the possibility of the stacked plates 1 tipping over during the transfer from the tail end to the head end of the wave soldering process.

[0040] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A fixture for processing a P-board, wherein the PCB board has multiple insertion holes for connecting to heat sink pins, the multiple insertion holes being arranged around a controller chip, characterized in that, The fixture includes a board body with multiple connectors on it. Each connector corresponds to a connector hole. When the heat sink is not mounted on the PCB board, the connectors are inserted into the connector holes and pressed down against the controller chip, so that the pins of the controller chip pass through the PCB board and remain extended for soldering.

2. The fixture for processing P-plates according to claim 1, characterized in that, The controller chip has two positioning notches, which are located at opposite ends of the controller chip. The board has positioning components that extend into the positioning notches as the connector is inserted to position the controller chip.

3. The fixture for processing P-plates according to claim 1, characterized in that, It also includes a pressing part, and the plate has a pressing surface for pressing the controller chip. The pressing part is located on the pressing surface, and the pressing part and the pressing surface press the controller chip of different thicknesses respectively.

4. The fixture for processing P-plates according to claim 1, characterized in that, The connector includes a mounting part and a plug-in part integrally connected to the mounting part. The mounting part is fastened to the plate body by a locking member, and the plug-in part is inserted into the plug-in hole to position the plate body.

5. The fixture for processing P-plates according to claim 4, characterized in that, The mounting part has a receiving groove on the side opposite to the insertion part, and the insertion part is inserted into the receiving groove when the plates are stacked vertically.

6. The fixture for processing P-plates according to claim 5, characterized in that, The opening of the receiving groove is located on a guide slope.

7. The fixture for processing P-plates according to claim 1, characterized in that, The plate is provided with clearance openings to avoid electronic components.

8. The fixture for processing P-plates according to claim 1, characterized in that, The plate is provided with two bosses that assist in the removal of the plate from the PCB. The two bosses are parallel and spaced apart, and protrude from the upper surface of the plate so that the clamps can hold the two opposite sides of the two bosses.

9. The fixture for processing P-plates according to claim 8, characterized in that, The top of the two opposite side walls of the two bosses are provided with ribs, which extend from the side wall of the boss in a direction away from the other boss.

10. The fixture for processing P-plates according to claim 8, characterized in that, The distance between the upper surface of the boss and the upper surface of the plate is D1, and the distance between the upper surface of the connector and the upper surface of the plate is D2, where D2 ≧ D1.

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