Computer motherboard welding device

Abstract

The present invention provides a computer motherboard welding device, which belongs to the technical field of computer device welding. It comprises a device body, the inner bottom surface of which is respectively provided with an ultrasonic cleaner, an air-drying support column, a chip mounter, a membrane separation nitrogen generator, a wave soldering machine and a detection component from front to back, a stirring component is fixedly installed on the upper surface of the ultrasonic cleaner, a hot blower is fixedly installed on the upper surface of the air-drying support column, a protruding platform is provided on the inner top surface of the device body, and a linear guide is fixedly installed on the lower surface of the protruding platform. The present invention realizes an efficient and automated pre-welding cleaning step by setting a stirring component and an ultrasonic cleaner, and realizes an automated post-welding quality inspection process by setting a detection component, thereby reducing the work pressure of the staff, and providing a full-process motherboard welding device as a whole.

Description

Technical Field

[0001] The invention relates to the technical field of computer component welding, in particular to a computer mainboard welding device. Background Art

[0002] The computer motherboard is a multi-layer rectangular circuit board, usually containing 4-6 layers, on which many electronic components are integrated, such as north and south bridge chips, BIOS chips, I / O control chips, various interfaces, slots, and a large number of capacitors and resistors. The pin spacing of these electronic components is small and the installation precision is high, especially for some chips, which have a large number of pins and are closely arranged, which has strict requirements on welding technology and equipment. In the early days, computer motherboard welding mainly relied on manual operation. Technicians used electric soldering irons and solder wires to solder components one by one. This method has high flexibility but low efficiency, and requires extremely high skills and experience of operators. The welding quality is uneven. With the development of technology, some semi-automatic welding equipment has emerged, such as electric soldering irons with automatic tin feeding function, which improves the efficiency and stability of welding. In recent years, automated welding technology has been widely used in the manufacture of computer motherboards, such as laser welding machines and reflow soldering machines using machine vision positioning, which can achieve high-speed and high-precision welding operations, greatly improving production efficiency and product quality. At present, Commonly used welding processes include manual soldering, wave soldering and reflow soldering. Manual soldering is suitable for small-batch production and maintenance, while wave soldering is suitable for batch soldering of plug-in components. Reflow soldering is mainly used for welding of surface mount components. Emerging welding technologies such as laser welding and electron beam welding are also beginning to be used in computer motherboard welding. These technologies have the advantages of high energy density, fast welding speed and small heat-affected zone, and can achieve more precise welding. Automated welding equipment includes welding robots, reflow soldering machines, wave soldering machines, etc. These equipment have high-precision positioning systems, stable welding control systems and efficient production capabilities, which can meet the needs of large-scale production. Welding materials mainly include solder wire and flux. Solder wire is usually composed of metals such as tin and lead. With the improvement of environmental protection requirements, lead-free solder wire has gradually become the mainstream, and flux is used to remove oxides on the welding surface and improve welding quality.

[0003] An intelligent welding device for a computer motherboard disclosed in the Chinese invention patent application publication number CN116571951B comprises a base, a preparation table for preparing components is arranged on the base, a welding box is also arranged on the base, a positioning assembly is slidably mounted on the base, the positioning assembly comprises a positioning seat, a clamping member for positioning and clamping the motherboard is arranged on the positioning seat, the positioning seat cooperates with the bottom of the welding box to form a welding space; a cleaning member is arranged on one side of the welding box for cleaning the motherboard; a collecting member is arranged on the other side of the welding box for collecting waste chips on the motherboard; a clamping assembly is arranged on the top of the welding box for transferring components and positioning and installing the components on the motherboard; the present invention can transfer electronic components to the motherboard for positioning and installation, and welding; and can perform local fine cleaning treatment on the motherboard after welding.

[0004] The above-mentioned welding device achieves a certain degree of automated computer welding, but its cleaning considerations are still insufficient. It only considers the cleaning after welding, but does not think that inadequate cleaning before welding will also affect the welding process, and it does not have a quality inspection process after welding is completed. Therefore, this application provides a computer motherboard welding device to meet the needs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a computer motherboard welding device to solve the problems that the existing motherboard processing before welding, the influence of the motherboard's own temperature on welding and the automatic detection of the motherboard after welding are not considered.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A computer motherboard welding device comprises a device body, wherein the inner bottom surface of the device body is respectively provided with an ultrasonic cleaner, an air-drying support column, a placement machine, a membrane separation nitrogen generator, a wave soldering machine and a detection component from front to back, a stirring component is fixedly installed on the upper surface of the ultrasonic cleaner, a hot blower is fixedly installed on the upper surface of the air-drying support column, a protruding platform is provided on the inner top surface of the device body, a linear guide is fixedly installed on the lower surface of the protruding platform, a slider is fixedly installed on the lower surface of the linear guide, and glass is fixedly installed on one side of the device body.

[0008] Optionally, the stirring assembly includes an assembly base plate, the upper surface of the assembly base plate is provided with a threaded hole, the internal thread of the threaded hole is connected to the assembly base plate bolt, the assembly base plate is threadedly connected to the upper surface of the ultrasonic cleaner through the assembly base plate bolt, the upper surface of the assembly base plate is fixedly installed with a rectangular tooth, the inner surface of the rectangular tooth is meshed with a rectangular tooth gear, the lower surface of the rectangular tooth gear is fixedly installed with a paddle, the upper surface of the rectangular tooth gear is provided with a bearing hole, and the inside of the bearing hole is fixedly installed with a rectangular tooth gear bearing.

[0009] Optionally, a bearing column is fixedly installed on the inner surface of the rectangular tooth gear bearing, a chain is fixedly installed on the upper surface of the bearing column, a chain driving gear and a chain driven gear are respectively meshed on the surface of the chain, a chain driving gear motor is fixedly installed on the lower surface of the chain driving gear, a chain driven gear bearing column is fixedly installed on the upper surface of the chain driven gear, and the other end of the chain driven gear bearing column is fixedly installed on the upper surface of the component bottom plate.

[0010] Optionally, the detection component includes a gear rack driven lifting platform, an external plate is fixedly installed on the upper surface of the gear rack driven lifting platform, a threaded hole is opened on one side of the external plate, the internal thread of the threaded hole is connected with a gear pushing motor bolt, one side of the external plate is threadedly connected with a gear pushing motor through the gear pushing motor bolt, one end of the gear pushing motor is fixedly installed with a bar tooth, the lower surface of the bar tooth is slidably connected with a tooth slide groove, the upper surface of the bar tooth is meshed with a bar tooth gear, and a bar tooth gear transmission rod is fixedly installed on one side of the bar tooth gear.

[0011] Optionally, a transmission rod bearing is fixedly installed on the surface of the bar-tooth gear transmission rod, a support member is fixedly installed on the outer surface of the transmission rod bearing, a threaded hole is opened on the lower surface of the support member, the internal thread of the threaded hole is connected with a support member bolt, the support member is threadedly connected to one side of the external plate through the support member bolt, a rotating member is fixedly installed on the surface of the bar-tooth gear transmission rod, an electric telescopic rod of the component is fixedly installed on one end of the rotating member, a connecting member is fixedly installed on one end of the electric telescopic rod of the component, and a micro motor is fixedly installed on the upper surface of the connecting member.

[0012] Optionally, a micromotor gear is fixedly installed at one end of the micromotor, a rotating gear is meshed on the surface of the micromotor gear, a screw-driven motor is fixedly installed on the lower surface of the rotating gear, a screw is fixedly installed on one end of the screw-driven motor, a screw is meshed on the surface of the screw with a screw gear, a hole is opened on the side of the screw gear, a rotating rod is inserted into the inside of the hole, the screw gear is rotatably connected to a fixing part through the rotating rod, a ring is fixedly installed on the lower surface of the fixing part, a pillar is fixedly installed on the lower surface of the ring, the ring is fixedly installed on the lower surface of the rotating gear through the pillar, a groove is opened on the surface of the ring, a plug-in is inserted into the inside of the groove, one side of the plug-in is fixedly installed on the bottom end of the connecting part, an additional part is fixedly installed on the upper surface of the screw gear, and a clamping part is fixedly installed on the surface of the additional part.

[0013] Optionally, a slider electric telescopic rod is fixedly installed on the lower surface of the slider, a supporting member is fixedly installed on one end of the slider electric telescopic rod, a small column is fixedly installed on the inner bottom surface of the device body, a transmission plate is fixedly installed on the upper surface of the small column, and a transmission plate transmission belt is provided on one side of the transmission plate.

[0014] Optionally, a column is fixedly installed on the inner bottom surface of the device body, a column platform is fixedly installed on the upper surface of the column, a platform transmission belt is provided on one side of the column platform, a push plate pushing motor is fixedly installed on the upper surface of the column platform, a push plate is fixedly installed on one end of the push plate pushing motor, and the upper surface of the column platform is fixedly installed on the lower surface of the detection component.

[0015] Optionally, a water inlet is provided on one side of the ultrasonic cleaning instrument, a water inlet pipe is fixedly installed on the surface of the water inlet, a water inlet pump is fixedly installed on one side of the ultrasonic cleaning instrument through the water inlet pipe, and a liquid storage tank is fixedly installed on one end of the water inlet pump through the water inlet pipe; a water outlet is provided on the other side of the ultrasonic cleaning instrument, a water outlet pipe is fixedly installed on the surface of the water outlet, a water outlet pump is fixedly installed on the other side of the ultrasonic cleaning instrument through the water outlet pipe, and a waste water tank is fixedly installed on one end of the water outlet pump through the water outlet pipe.

[0016] A computer mainboard welding device comprises the following steps:

[0017] Step 1: Prepare an automated operation room, which is composed of a bottom plate, columns and a top plate. An entrance is set at the back of the automated operation room for personnel to enter for maintenance. Both sides are closed and have openings, respectively realizing the functions of inserting and sending out the mainboard. Glass is set at the front for staff to observe. A PLC electric control terminal can also be added to the front as needed, so as to realize data control of the automated process externally.

[0018] Step 2: The front end of the automation room is protruded to install two linear guide rails. Two sliders are placed on the two linear guide rails, respectively, for a total of four sliders. An electric telescopic rod is installed on each slider, and a component is installed at the bottom of the electric telescopic rod. One end of the component is flattened to receive the movement driven by the main board.

[0019] Step 3, set up an ultrasonic cleaning instrument, the two sides of the ultrasonic cleaning instrument are respectively provided with water inlet and outlet, and the liquid storage tank and the waste water tank are respectively connected by water pipes, and the cleaning liquid of the ultrasonic cleaning instrument is automatically replaced by pumping with a water pump, prepare a rectangular toothed part, the middle part of the rectangular toothed part is opened, the inner surface is provided with meshing teeth, and an adapted rectangular toothed part gear is meshed, and a paddle is installed on the lower surface of the rectangular toothed part gear, and the paddle is bevel-cut to have a certain drag reduction ability, prepare a chain, and install it on the upper part of the rectangular toothed part gear at the intersection of the chain link and the connecting part, prepare a chain driven gear, the chain driven gear is adapted to mesh with the chain, and the chain driven gear is supported and connected to the surface of the rectangular toothed part by an independent chain driven gear bearing column, the chain driven gear is arranged at the four corners of the chain, and the chain is supported, and a chain driving gear is prepared, the chain driving gear is adapted to mesh with the outer surface of the chain, and is driven by a chain driving gear motor;

[0020] Step 4: Prepare a transmission belt for transmission, which is supported by a small column. A transmission plate is installed on the upper part of the small column. A motor is placed on one side of the transmission plate. A transmission plate transmission belt is arranged on the other side of the transmission plate. The motor provides power. The transmission belt for transmission is divided into two places. Four air-drying support columns with inclined angle cuts on the top are arranged around the transmission belt at the first place, and a hot blower is installed on the upper surface of the air-drying support columns.

[0021] Step 5: Place the chip mounter, membrane separation nitrogen generator and wave soldering machine in a front-to-back order. The chip mounter and wave soldering machine are on the production line, and the membrane separation nitrogen generator is located at the rear of the automated operation room.

[0022] Step 6: Prepare a transmission belt for transmission and support, which is supported by a column, on which a column platform is installed, on which a push plate driving motor is installed, the push plate driving motor is connected to a push plate, and is located at the center of the column platform surface, and a platform transmission belt is arranged on the inner side of the column platform, which is also driven by a motor, but the motor is arranged inside the column platform to prevent obstruction of the detection component function;

[0023] Step 7. Prepare a gear rack driven lifting platform, install an external plate on it, set a gear push motor, one end of the gear push motor is not directly connected to the bar gear but is connected to one end of the bar gear through an independent small connecting block, the gear slide groove adapts to the sliding movement of the bar gear, and there is no restriction on both ends, prepare a support member, the support member is set in a "T" shape, holes are opened on the surface, prepare a rotating member, realize transmission and rotation on the bar gear gear transmission rod and can add an electric telescopic rod as a component, prepare a connecting member, the connecting member is extended at the upper part and the circular opening at the lower part, and a plurality of extension columns are arranged inside the circular opening, prepare a ring, the outer surface of the ring is grooved, and the groove is adapted to the extension column at the bottom of the plug-in connecting member, prepare a clamping member, the clamping member is chamfered on the surface of a rectangular body, and presents a streamline change from thin to thick from the end to the tail.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] In the above scheme, an automated cleaning process before soldering of the motherboard is realized by setting an ultrasonic cleaner and a stirring component thereon. The computer motherboard often needs to be cleaned before soldering because some impurities such as metal debris, dust, oil, etc. may remain during the production process or transportation process of the motherboard. These impurities will affect the welding quality and may cause problems such as cold soldering and short circuit. For example, metal debris may be sandwiched between solder joints during soldering, causing loose soldering or short circuit. The surface of the motherboard can be cleaned to a great extent by using an ultrasonic cleaner, but there are certain problems in the process of putting ultrasonic cleaners into automated production. The dirt stripped off by the ultrasonic wave often adheres to the surface of the motherboard and is taken out together with the motherboard when it leaves, making the cleaning step incomplete. A stirring component is added to the ultrasonic cleaner. When the cleaning is completed, the stirring function of the stirring component is used to stir up the dirt stripped off by the ultrasonic wave, so that the surface of the motherboard is exposed to the clean cleaning liquid and then taken out by the relevant components, thereby achieving a high cleaning efficiency.

[0026] By setting up a membrane separation nitrogen generator, the nitrogen in the air inside the device is separated, and the remaining gas is discharged outside the device to form a nitrogen working environment to prevent the air from continuing to react with the surface of the mainboard to cause hidden dangers of welding. At the same time, the setting of the hot blower allows the mainboard to be driven by the transmission plate belt to be exposed to the working range of the hot blower after cleaning. The hot blower heats the nitrogen to heat the mainboard and dry the moisture. The surface temperature of the mainboard rises to a certain extent. The appropriate temperature helps to form full, smooth, and pore-free high-quality solder joints to ensure good electrical connection and mechanical strength. When the temperature is low, various defects such as cold solder joints, short circuits, and tin bridges will occur in the solder joints, reducing the reliability of the mainboard. Poor contact and signal transmission interruption may occur during use. At the same time, a certain increase in the temperature of the mainboard is also suitable for the working needs of the wave soldering machine.

[0027] The detection component is set up to carry out the final inspection step for the welded motherboard. After the welded motherboard, the staff will often gently lift or twist the welding components on the surface to check whether there are components that are not firmly welded. This leads to increased work pressure for the staff, and it is also the part that is neglected by the existing automated process. Through the setting of the detection component and the column platform, when the motherboard is transferred to the column platform, the relevant components on the column platform will clamp and fix the motherboard, and then the detection component will randomly or comprehensively check the welding components of the motherboard. The detection component has the function of lifting and twisting or applying force simultaneously to carry out the final process inspection of the welding components. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0029] Figure 1 It is a three-dimensional structural diagram of a computer motherboard welding device;

[0030] Figure 2 It is a schematic diagram of the internal structure of the three-dimensional structure of the computer motherboard welding device;

[0031] Figure 3 A schematic diagram of an ultrasonic cleaner and agitation assembly for a computer motherboard welding device;

[0032] Figure 4 Exploded diagram of stirring assembly for computer motherboard welding device;

[0033] Figure 5 Soldering device for computer motherboard Figure 4 Figure A structural diagram;

[0034] Figure 6This is a schematic diagram of the structure of the computer motherboard welding device detection component;

[0035] Figure 7 Detect component structure explosion diagram for computer motherboard welding device;

[0036] Figure 8 This is a schematic diagram of the computer motherboard welding device structure;

[0037] Fig. 9 This is a schematic diagram of an ultrasonic cleaner and its related components for a computer motherboard welding device.

[0038] Reference numerals:

[0039] 1. Device body; 2. Ultrasonic cleaner; 3. Air drying support column; 4. SMT machine; 5. Membrane separation nitrogen generator; 6. Wave soldering machine; 7. Detection component; 8. Stirring component; 9. Hot blower; 10. Linear guide; 11. Slider; 12. Glass; 13. Slider electric telescopic rod; 14. Supporting part; 15. Small column; 16. Transmission plate; 17. Transmission plate transmission belt; 18. Column; 19. Column platform; 20. Platform transmission belt; 21. Push plate push motor; 22. Push plate; 23. Water inlet; 24. Water inlet pump; 25. Liquid storage tank; 26. Water outlet; 27. Water outlet pump; 28. Wastewater tank; 701. Gear rack drive lifting platform; 702. Gear push motor; 703. Bar gear; 704. Gear slide; 705. Bar Tooth gear; 706, bar tooth gear transmission rod; 707, transmission rod bearing; 708, support member; 709, rotating member; 710, component electric telescopic rod; 711, connecting member; 712, micro motor; 713, micro motor gear; 714, rotating gear; 715, screw drive motor; 716, screw; 717, screw gear; 718, rotating rod; 719, fixing member; 720, ring; 721, pillar; 722, plug-in; 723, clamping member; 801, component bottom plate; 802, rectangular tooth; 803, rectangular tooth gear; 804, paddle; 805, rectangular tooth gear bearing; 806, bearing column; 807, chain; 808, chain driving gear; 809, chain driven gear; 810, chain driven gear bearing column.

[0040] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0041] The following is a detailed description of a computer motherboard welding device provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0042] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" etc. in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it should be within the knowledge of technicians in the relevant field to implement such features, structures or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0043] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0044] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0045] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0046] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a computer motherboard welding device, including a device body 1, the inner bottom surface of the device body 1 is respectively provided with an ultrasonic cleaner 2, an air-drying support column 3, a mounter 4, a membrane separation nitrogen generator 5, a wave soldering machine 6 and a detection component 7 from front to back, a stirring component 8 is fixedly installed on the upper surface of the ultrasonic cleaner 2, a hot blower 9 is fixedly installed on the upper surface of the air-drying support column 3, a protruding platform is provided on the inner top surface of the device body 1, a linear guide 10 is fixedly installed on the lower surface of the protruding platform, a slider 11 is fixedly installed on the lower surface of the linear guide 10, and one side of the device body 1 is fixedly installed The present invention is equipped with glass 12. When the present invention is used, the mainboard is sent into the device through the mainboard delivery entrance on one side of the device body 1. The mainboard will be driven by the sliding of the slider 11 on the linear guide rail 10 and supported by the supporting member 14 on the slider 11 to move toward the ultrasonic cleaning device 2. When it moves to the top of the ultrasonic cleaning device 2, the slider electric telescopic rod 13 on the slider 11 is extended downward, so that the mainboard is immersed in the cleaning liquid and the dirt on the surface of the mainboard is started to be cleaned. Usually, it takes 15-30 minutes for the ultrasonic cleaning of the computer mainboard. When the cleaning is completed, the stirring component 8 is started to stir the cleaning liquid evenly so that the dirt attached to the mainboard surface is The dirt on the surface is stirred up to prevent the dirt from attaching again, and then the mainboard is moved to the transmission plate transmission belt 17 by the linear guide 10, the slider 11 and the supporting member 14, and the transmission plate transmission belt 17 transports the mainboard to the center of the hot blower 9, and the hot blower 9 is started to dry the water on the surface of the mainboard, and at the same time, the temperature of the surface of the mainboard is increased to a certain extent, and then the transmission plate transmission belt 17 sends the mainboard to the SMT machine 4 and the wave soldering machine 6 for welding. (The SMT machine 4 and the wave soldering machine 6 are existing well-known technologies. The SMT machine 4 is a kind of electronic assembly equipment, which is mainly used to automatically place electronic components on the circuit board. The nozzle of the placement machine 4 picks up a specific type of component from the material box or material belt according to a preset program. It is usually driven by a vacuum system to generate negative pressure to absorb and fix the component. After the component is sucked, the built-in camera and image processing system are used to identify and locate the component to quickly and accurately determine the type, position and posture of the component. According to the information obtained by the image processing system, the placement head is moved to the target position and aligned to the position. A precise servo system and feedback control system are used to ensure high-precision position and angle adjustment. After the placement head reaches the target position and adjusts the angle, the component is released from the nozzle onto the PCB board. After placement, various sensors are used to check the position and posture of the component. If deviation is found, the built-in correction system is used to correct it.The wave soldering machine 6 is a soldering equipment widely used in the field of electronic manufacturing. It is mainly used for efficient and reliable soldering between electronic components and printed circuit boards (PCBs). The PCB board is sent into the wave soldering machine 6 through a conveying system. First, it passes through a flux coating system. The flux is evenly coated on the soldering surface of the PCB board. The PCB board coated with flux enters a preheating zone and is preheated by infrared heating or hot air circulation to make the PCB board and components reach a certain temperature, reduce the thermal shock during soldering, and activate the flux at the same time. The preheated PCB board enters a wave soldering zone. Liquid solder forms a wave crest under the action of a pump. The PCB board passes over the wave crest so that the component pins on the PCB board are fully in contact with the solder, completing the soldering process. After soldering, the PCB board enters a cooling zone and the solder joints are quickly cooled and solidified by air cooling or natural cooling to fix the components and the PCB. The main board is connected to the detection component 7 for the final quality inspection. At the same time, the push plate pushes the motor 21 and the push plate 22 to position and clamp to maintain stability during the inspection. During the overall operation of the device, the membrane separation nitrogen generator 5 will extract the nitrogen in the air in the device to keep the inside of the device in a nitrogen state. (The membrane separation nitrogen generator 5 is an existing well-known technology that uses the difference in permeation rates of different gases in the membrane material to achieve separation. When the mixed gas applies a certain pressure on one side of the membrane, the gas molecules selectively penetrate according to their solubility and diffusion rate in the membrane. Since the nitrogen molecules are in the membrane material The permeation rate of nitrogen in the air is slow, while the permeation rate of oxygen and other gas molecules is fast. On the other side of the membrane, the nitrogen concentration gradually increases, thereby achieving the separation and purification of nitrogen. Its working principle is to first compress the gas in the atmosphere so that it can enter the subsequent module for processing. It uses a multi-stage filter to filter impurities in the air, such as moisture, grease and particles, to ensure the purity of nitrogen, and then separate it by the membrane separation module. The membrane separation module is mainly composed of many thin and porous polymer membranes. These membranes have specific permeability properties and can selectively allow nitrogen to pass through, while blocking other gases, and finally separating the nitrogen).

[0047] like Figures 2 to 5As shown, the stirring assembly 8 includes an assembly bottom plate 801, the upper surface of the assembly bottom plate 801 is provided with a threaded hole, the inner thread of the threaded hole is connected with an assembly bottom plate bolt, the assembly bottom plate 801 is threadedly connected to the upper surface of the ultrasonic cleaning instrument 2 through the assembly bottom plate bolt, the upper surface of the assembly bottom plate 801 is fixedly installed with a rectangular toothed member 802, the inner surface of the rectangular toothed member 802 is meshed with a rectangular toothed member gear 803, the lower surface of the rectangular toothed member gear 803 is fixedly installed with a paddle 804, the upper surface of the rectangular toothed member gear 803 is provided with a The bearing hole has a rectangular toothed gear bearing 805 fixedly installed inside the bearing hole, a bearing column 806 fixedly installed on the inner surface of the rectangular toothed gear bearing 805, a chain 807 fixedly installed on the upper surface of the bearing column 806, a chain driving gear 808 and a chain driven gear 809 are respectively meshed on the surface of the chain 807, a chain driving gear motor is fixedly installed on the lower surface of the chain driving gear 808, a chain driven gear bearing column 810 is fixedly installed on the upper surface of the chain driven gear 809, and a chain driven gear bearing column 811 is fixedly installed on the upper surface of the chain driven gear 809. The other end of the chain 808 is fixedly mounted on the upper surface of the assembly bottom plate 801. The chain driving gear 808 is provided with a rotational force by the chain driving gear motor, meshing with the chain 807 to make the chain 807 move. The chain driven gears 809 arranged at the four corners of the chain 807 can effectively maintain the normal operation and stability of the chain 807. The chain driven gear 809 is kept stable on the assembly bottom plate 801 by the chain driven gear bearing column 810. As the chain 807 moves, the rectangular toothed gear 803 arranged thereon will move synchronously. While the gear 803 is moving, the rectangular toothed gear 803 will rotate due to the meshing with the rectangular toothed gear 802. The setting of the rectangular toothed gear bearing 805 and the bearing column 806 ensures that the rectangular toothed gear 803 can continue to revolve along with the chain 807 while rotating itself. Therefore, the paddle 804 provided on the rectangular toothed gear 803 will rotate while revolving under such a series of transmissions, thereby efficiently stirring the cleaning liquid. Its own bevel angle setting also effectively reduces the resistance of water.

[0048] like Figures 2 to 5 and Figure 6As shown, the detection component 7 includes a gear rack driven lifting platform 701, an external plate is fixedly installed on the upper surface of the gear rack driven lifting platform 701, a threaded hole is opened on one side of the external plate, and a gear pushing motor bolt is threadedly connected to the internal thread of the threaded hole, and a gear pushing motor 702 is threadedly connected to one side of the external plate through the gear pushing motor bolt, and a bar gear 703 is fixedly installed on one end of the gear pushing motor 702, and a gear slide groove 704 is slidably connected to the lower surface of the bar gear 703, and a bar gear gear 705 is meshed on the upper surface of the bar gear 703, and a bar gear gear transmission rod 706 is fixedly installed on one side of the bar gear gear 705. A transmission rod bearing 707 is fixedly installed on the surface of the bar-tooth gear transmission rod 706, and a support member 708 is fixedly installed on the outer surface of the transmission rod bearing 707. A threaded hole is opened on the lower surface of the support member 708, and the internal thread of the threaded hole is connected with a support member bolt. The support member 708 is threadedly connected to one side of the external plate through the support member bolt. A rotating member 709 is fixedly installed on the surface of the bar-tooth gear transmission rod 706, and an electric telescopic rod 710 is fixedly installed on one end of the rotating member 709. A connecting member 711 is fixedly installed on one end of the electric telescopic rod 710, and a micro motor 712 is fixedly installed on the upper surface of the connecting member 711. A micro motor gear 713 is fixedly installed at one end, a rotating gear 714 is meshed on the surface of the micro motor gear 713, a screw driving motor 715 is fixedly installed on the lower surface of the rotating gear 714, a screw 716 is fixedly installed at one end of the screw driving motor 715, a screw gear 717 is meshed on the surface of the screw 716, a hole is opened on the side of the screw gear 717, a rotating rod 718 is inserted in the inside of the hole, the screw gear 717 is rotatably connected to a fixing member 719 through the rotating rod 718, a ring 720 is fixedly installed on the lower surface of the fixing member 719, a support 721 is fixedly installed on the lower surface of the ring 720, and the ring 720 is fixed by the support 721 Installed on the lower surface of the rotating gear 714, the surface of the ring 720 is provided with a groove, the interior of the groove is plugged with an insert 722, one side of the insert 722 is fixedly installed on the bottom end of the connecting piece 711, the upper surface of the screw gear 717 is fixedly installed with an additional part, and the surface of the additional part is fixedly installed with a clamping part 723. The gear rack is used to drive the lifting platform 701 to realize the overall up and down movement of the device. (The gear rack driving lifting platform 701 is an existing well-known technology. The gear rack driving lifting platform 701 is mainly driven by a motor to drive the gear to rotate. The gear and the rack are meshed with each other, and the rotational motion of the motor is converted into the linear motion of the rack, thereby driving the platform to achieve lifting.When the motor rotates forward, the gear drives the rack to move upward and the platform rises; when the motor rotates reversely, the gear drives the rack to move downward and the platform descends). The gear pushes the motor 702 to push. One end of the gear push motor 702 is fixedly installed with a bar gear 703, so the bar gear 703 moves back and forth in the gear slide groove 704 when the gear push motor 702 is driven. The surface of the bar gear 703 is provided with protruding teeth and is adapted to mesh with the bar gear gear 705. Here, the bar gear gear 705 is driven to rotate. While the bar gear gear 705 rotates, it meshes with the bar gear gear 705. The bar-shaped gear transmission rod 706 fixedly connected to the toothed gear 705 also rotates. The arrangement of the transmission rod bearing 707 and the support member 708 provides support and stability. The rotating member 709 is fixedly installed on the surface of the bar-shaped gear transmission rod 706. The rotating member 709 can carry the component electric telescopic rod 710 for rotation (the component electric telescopic rod 710 uses a 200mm24V electric telescopic rod). The component electric telescopic rod 710 carries the connecting member 711 here to rotate, and the motor 715 is driven by the screw rod to give the screw rod 716 a push. The force causes the screw rod 716 to move upward or downward. During the displacement of the screw rod 716, the rotating rod 718 and the fixing member 719 restrict and allow the screw rod gear 717 meshing therewith to deflect and rotate, thereby driving the clamping member 723 arranged thereon to perform offset grasping. The clamping member 723 is a long rectangular beveled configuration, which can adapt to various sizes of components. After the grasping is completed, the screw rod pushes the motor 715 back to realize the upward extraction. At the same time, the micro motor 712 drives the micro motor gear 713 to rotate, and the micro motor gear 713 meshes with the rotating gear 714 to rotate. Since the lower surface of the rotating gear 714 is connected to the pillar 721 and the screw-driven motor 715, and the groove on the outer surface of the ring 720 is inserted into the plug-in 722 under the connecting piece 711, the clamping piece 723 and a series of components thereof can be rotated on the connecting piece 711 to achieve left and right grasping and twisting. With such a series of operation controls, the detection component 7 can achieve positioning offset, extension, upward and downward movement above the mainboard, realizing an efficient grasping and positioning, and can realize lifting and twisting after grasping, and efficiently detect the stability of the mainboard welding.

[0049] like Figure 2 and Figure 7As shown, a slider electric telescopic rod 13 is fixedly installed on the lower surface of the slider 11, and a supporting member 14 is fixedly installed on one end of the slider electric telescopic rod 13. A small column 15 is fixedly installed on the inner bottom surface of the device body 1, and a transmission plate 16 is fixedly installed on the upper surface of the small column 15. A transmission plate transmission belt 17 is provided on one side of the transmission plate 16. A column 18 is fixedly installed on the inner bottom surface of the device body 1, and a column platform 19 is fixedly installed on the upper surface of the column 18. A platform transmission belt 20 is provided on one side of the column platform 19. A push plate pushing motor 21 is fixedly installed on the upper surface of the column platform 19, and a push plate 22 is fixedly installed on one end of the push plate pushing motor 21. The upper surface of the column platform 19 is fixedly installed on the lower surface of the detection component 7. (Slider electric telescopic rod 13 is fixedly installed on the inner bottom surface of the device body 1, and a small column 15 is fixedly installed on the upper surface of the small column 15. A transmission plate 16 is fixedly installed on the upper surface of the small column 15. A transmission plate transmission belt 17 is provided on one side of the transmission plate 16. A column 18 is fixedly installed on the upper surface of the column 18. A platform transmission belt 20 is provided on one side of the column platform 19. A push plate pushing motor 21 is fixedly installed on the upper surface of the column platform 19. A push plate 22 is fixedly installed on one end of the push plate pushing motor 21. The upper surface of the column platform 19 is fixedly installed on the lower surface of the detection component 7. The dynamic telescopic rod 13 uses a 300MM24V electric telescopic rod). When the mainboard initially enters the interior of the device, the slider electric telescopic rod 13 on the two sliders 11 on the left controls the supporting member 14 to move up, so that the mainboard can be placed on the two supporting members 14 on the right. Then the left slider 11 moves left and resets the supporting member 14 downward. Finally, the slider 11 moves right and resets, so that the mainboard is perfectly lifted. When the mainboard is sent to the transmission plate transmission belt 17, the slider 11 controls the slider electric telescopic rod 13 to support downward and move left and right by itself to disengage the mainboard. When the mainboard is sent to the center of the platform transmission belt 20, the transmission is stopped, and the push plate push motor 21 pushes the push plate 22 to clamp the mainboard and stabilize it, so as to facilitate the stability of the subsequent detection component 7 when it is working.

[0050] like Figure 2 and Figure 8 As shown, a water inlet 23 is provided on one side of the ultrasonic cleaning instrument 2, a water inlet pipe is fixedly installed on the surface of the water inlet 23, a water inlet pump 24 is fixedly installed on one side of the ultrasonic cleaning instrument 2 through the water inlet pipe, a liquid storage tank 25 is fixedly installed on one end of the water inlet pump 24 through the water inlet pipe, a water outlet 26 is provided on the other side of the ultrasonic cleaning instrument 2, a water outlet pipe is fixedly installed on the surface of the water outlet 26, a water outlet pump 27 is fixedly installed on the other side of the ultrasonic cleaning instrument 2 through the water outlet pipe, a waste water tank 28 is fixedly installed on one end of the water outlet pump 27 through the water outlet pipe, the cleaning liquid in the liquid storage tank 25 is pumped by the water inlet pump 24 and enters the ultrasonic cleaning instrument 2 through the water inlet 23, when the cleaning liquid is replaced, the waste water is pumped out from the water outlet 26 into the waste water tank 28 through the water outlet pump 27, thereby realizing an automatic replacement of the cleaning liquid.

[0051] A computer mainboard welding device, when in use, comprises the following steps;

[0052] Step 1: Prepare an automated operation room, which is composed of a bottom plate, columns and a top plate. An entrance is set at the back of the automated operation room for personnel to enter for maintenance. Both sides are closed and have openings, respectively realizing the functions of inserting and sending out the mainboard. Glass is set at the front for staff to observe. A PLC electric control terminal can also be added to the front as needed, so as to realize data control of the automated process externally.

[0053] Step 2: The front end of the automation room is protruded to install two linear guide rails. Two sliders are placed on the two linear guide rails, respectively, for a total of four sliders. An electric telescopic rod is installed on each slider, and a component is installed at the bottom of the electric telescopic rod. One end of the component is flattened to receive the movement driven by the main board.

[0054] Step 3, set up an ultrasonic cleaning instrument, the two sides of the ultrasonic cleaning instrument are respectively provided with water inlet and outlet, and the liquid storage tank and the waste water tank are respectively connected by water pipes, and the cleaning liquid of the ultrasonic cleaning instrument is automatically replaced by pumping with a water pump, prepare a rectangular toothed part, the middle part of the rectangular toothed part is opened, the inner surface is provided with meshing teeth, and an adapted rectangular toothed part gear is meshed, and a paddle is installed on the lower surface of the rectangular toothed part gear, and the paddle is bevel-cut to have a certain drag reduction ability, prepare a chain, and install it on the upper part of the rectangular toothed part gear at the intersection of the chain link and the connecting part, prepare a chain driven gear, the chain driven gear is adapted to mesh with the chain, and the chain driven gear is supported and connected to the surface of the rectangular toothed part by an independent chain driven gear bearing column, the chain driven gear is arranged at the four corners of the chain, and the chain is supported, and a chain driving gear is prepared, the chain driving gear is adapted to mesh with the outer surface of the chain, and is driven by a chain driving gear motor;

[0055] Step 4: Prepare a transmission belt for transmission, which is supported by a small column. A transmission plate is installed on the upper part of the small column. A motor is placed on one side of the transmission plate. A transmission plate transmission belt is arranged on the other side of the transmission plate. The motor provides power. The transmission belt for transmission is divided into two places. Four air-drying support columns with inclined angle cuts on the top are arranged around the transmission belt at the first place, and a hot blower is installed on the upper surface of the air-drying support columns.

[0056] Step 5: Place the chip mounter, membrane separation nitrogen generator and wave soldering machine in a front-to-back order. The chip mounter and wave soldering machine are on the production line, and the membrane separation nitrogen generator is located at the rear of the automated operation room.

[0057] Step 6: Prepare a transmission belt for transmission and support, which is supported by a column, on which a column platform is installed, on which a push plate driving motor is installed, the push plate driving motor is connected to a push plate, and is located at the center of the column platform surface, and a platform transmission belt is arranged on the inner side of the column platform, which is also driven by a motor, but the motor is arranged inside the column platform to prevent obstruction of the detection component function;

[0058] Step 7. Prepare a gear rack driven lifting platform, install an external plate on it, set a gear push motor, one end of the gear push motor is not directly connected to the bar gear but is connected to one end of the bar gear through an independent small connecting block, the gear slide groove adapts to the sliding movement of the bar gear, and there is no restriction on both ends, prepare a support member, the support member is set in a "T" shape, holes are opened on the surface, prepare a rotating member, realize transmission and rotation on the bar gear gear transmission rod and can add an electric telescopic rod as a component, prepare a connecting member, the connecting member is extended at the upper part and the circular opening at the lower part, and a plurality of extension columns are arranged inside the circular opening, prepare a ring, the outer surface of the ring is grooved, and the groove is adapted to the extension column at the bottom of the plug-in connecting member, prepare a clamping member, the clamping member is chamfered on the surface of a rectangular body, and presents a streamline change from thin to thick from the end to the tail.

[0059] The working principle of the technical solution provided by the present invention is as follows:

[0060] First, the mainboard is sent into the device through the mainboard transmission entrance on one side of the device body 1. The mainboard will be driven by the sliding of the slider 11 on the linear guide 10 and supported by the supporting member 14 on the slider 11 to move toward the ultrasonic cleaning device 2. When it moves to the top of the ultrasonic cleaning device 2, the slider electric telescopic rod 13 on the slider 11 is extended downward, so that the mainboard is immersed in the cleaning liquid and the dirt on the surface of the mainboard begins to be cleaned. After the cleaning is completed, the cleaning liquid is stirred by the stirring component 8 so that the sludge attached to the surface of the mainboard can be dispersed and will not continue to remain on the mainboard when the mainboard is taken out. Then, the mainboard is driven by the linear guide 10, the slider 11 and the supporting member 14 to move the mainboard to the transmission plate transmission belt 17. The transmission plate transmission belt 17 transports the mainboard to the center of the hot blower 9, and the hot blower 9 is started to dry the water on the surface of the mainboard. At the same time, the temperature of the surface of the mainboard is increased to a certain extent, and then the transmission plate belt 17 sends the mainboard to the placement machine 4 and the wave soldering machine 6 for welding. Finally, the mainboard is sent to the detection component 7 for final quality inspection. The detection component 7 can realize left and right grasping and twisting and up and down extraction. Such a series of operation controls allow the detection component 7 to realize positioning offset, extension, upward and downward movement above the mainboard, thereby realizing an efficient grasping and positioning, and can realize lifting and twisting after grasping, and efficiently detect the stability of the mainboard welding. At the same time, the push plate pushes the motor 21 and the push plate 22 for positioning and clamping to maintain stability during inspection. During the overall operation of the device, the membrane separation nitrogen generator 5 will extract the nitrogen in the air in the device, so that the inside of the device is always in a nitrogen state, so that oxygen has no effect on the welding process of the mainboard.

[0061] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A computer motherboard welding device, characterized in that: It comprises a device body, and the inner bottom surface of the device body is respectively provided with an ultrasonic cleaner, an air-drying support column, a chip mounter, a membrane separation nitrogen generator, a wave soldering machine and a detection component from front to back; A stirring assembly is fixedly mounted on the upper surface of the ultrasonic cleaning instrument, and a hot blower is fixedly mounted on the upper surface of the air-drying support column; A protruding platform is provided on the inner top surface of the device body, a linear guide is fixedly installed on the lower surface of the protruding platform, a slider is fixedly installed on the lower surface of the linear guide, and a glass is fixedly installed on one side of the device body; The detection component includes a gear rack driven lifting platform, the gear rack driven lifting platform is fixedly installed with an external plate on the upper surface of the gear rack driven lifting platform, a threaded hole is opened on one side of the external plate, the internal thread of the threaded hole is connected with a gear pushing motor bolt, one side of the external plate is threadedly connected with a gear pushing motor bolt through the gear pushing motor bolt, one end of the gear pushing motor is fixedly installed with a bar gear, the lower surface of the bar gear is slidably connected with a gear slide groove, the upper surface of the bar gear is meshed with a bar gear gear, one side of the bar gear gear is fixedly installed with a bar gear gear transmission rod, the surface of the bar gear gear transmission rod is fixedly installed with a transmission rod bearing, the outer surface of the transmission rod bearing is fixedly installed with a support member, the lower surface of the support member is opened with a threaded hole, the internal thread of the threaded hole is connected with a support member bolt, the support member is threadedly connected to one side of the external plate through the support member bolt, the surface of the bar gear gear transmission rod is fixedly installed with a rotating member, one side of the rotating member An electric telescopic rod component is fixedly installed on the end, and a connecting piece is fixedly installed on one end of the electric telescopic rod component, a micro motor is fixedly installed on the upper surface of the connecting piece, a micro motor gear is fixedly installed on one end of the micro motor, the surface of the micro motor gear is meshed with a rotating gear, and a screw driving motor is fixedly installed on the lower surface of the rotating gear, and a screw is fixedly installed on one end of the screw driving motor, and a screw is meshed with a screw gear on the surface of the screw, a hole is opened on the side of the screw gear, a rotating rod is inserted in the inside of the hole, and the screw gear is rotatably connected to a fixing piece through the rotating rod, a ring is fixedly installed on the lower surface of the fixing piece, a pillar is fixedly installed on the lower surface of the ring, and the ring is fixedly installed on the lower surface of the rotating gear through the pillar, a groove is opened on the surface of the ring, and a plug-in is inserted in the inside of the groove, and one side of the plug-in is fixedly installed on the bottom end of the connecting piece, an additional piece is fixedly installed on the upper surface of the screw gear, and a clamping piece is fixedly installed on the surface of the additional piece.

2. The computer motherboard welding device according to claim 1, characterized in that: The stirring assembly includes an assembly base plate, a threaded hole is formed on the upper surface of the assembly base plate, and an assembly base plate bolt is threadedly connected to the upper surface of the ultrasonic cleaner through the assembly base plate bolt. A rectangular tooth is fixedly installed on the upper surface of the assembly base plate, a rectangular tooth gear is meshed on the inner surface of the rectangular tooth, a paddle is fixedly installed on the lower surface of the rectangular tooth gear, a bearing hole is formed on the upper surface of the rectangular tooth gear, and a rectangular tooth gear bearing is fixedly installed inside the bearing hole.

3. The computer motherboard welding device according to claim 2, characterized in that: A bearing column is fixedly installed on the inner surface of the rectangular tooth gear bearing, a chain is fixedly installed on the upper surface of the bearing column, a chain driving gear and a chain driven gear are respectively meshed on the surface of the chain, a chain driving gear motor is fixedly installed on the lower surface of the chain driving gear, a chain driven gear bearing column is fixedly installed on the upper surface of the chain driven gear, and the other end of the chain driven gear bearing column is fixedly installed on the upper surface of the component bottom plate.

4. The computer motherboard welding device according to claim 1, characterized in that: A slider electric telescopic rod is fixedly installed on the lower surface of the slider, a supporting member is fixedly installed on one end of the slider electric telescopic rod, a small column is fixedly installed on the inner bottom surface of the device body, a transmission plate is fixedly installed on the upper surface of the small column, and a transmission plate transmission belt is provided on one side of the transmission plate.

5. The computer motherboard welding device according to claim 1, characterized in that: A column is fixedly installed on the inner bottom surface of the device body, a column platform is fixedly installed on the upper surface of the column, a platform transmission belt is provided on one side of the column platform, a push plate pushing motor is fixedly installed on the upper surface of the column platform, a push plate is fixedly installed on one end of the push plate pushing motor, and the upper surface of the column platform is fixedly installed on the lower surface of the detection component.

6. The computer motherboard welding device according to claim 1, characterized in that: A water inlet is provided on one side of the ultrasonic cleaning instrument, a water inlet pipe is fixedly installed on the surface of the water inlet, a water inlet pump is fixedly installed on one side of the ultrasonic cleaning instrument through the water inlet pipe, and a liquid storage tank is fixedly installed on one end of the water inlet pump through the water inlet pipe; a water outlet is provided on the other side of the ultrasonic cleaning instrument, a water outlet pipe is fixedly installed on the surface of the water outlet, a water outlet pump is fixedly installed on the other side of the ultrasonic cleaning instrument through the water outlet pipe, and a waste water tank is fixedly installed on one end of the water outlet pump through the water outlet pipe.

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