Patch processing device for processing built-in circuit board of charger

Abstract

The invention relates to the field of circuit board surface mounting, in particular to a surface mounting processing device for processing a built-in circuit board of a charger, which comprises an operation table, a polished rod assembly is arranged on the operation table, and the polished rod assembly is composed of a polished rod and a rod frame; a polished rod assembly is arranged on the base, a sliding table is arranged on the polished rod assembly in a sliding fit mode, a motor is fixedly installed on the outer end face of the sliding table, the output end of the motor is connected with a threaded rod through a coupler, the two ends of the threaded rod are connected to the two ends of an inner cavity of the sliding table through bearings, and a containing frame is arranged on the threaded rod in a threaded fit mode. According to the patch processing device for processing the built-in circuit board of the charger, the negative pressure channel is rapidly switched through the splitter plate, it is ensured that the negative pressure only acts on the patch mechanism in current operation, and the negative pressure utilization rate is increased.

Description

Technical Field

[0001] This invention relates to the field of circuit board surface mount technology, specifically to a surface mount processing apparatus for processing the built-in circuit board of a charger. Background Technology

[0002] In the electronics manufacturing industry, surface mount technology (SMT) is a core process for precisely soldering micro-electronic components (such as resistors, capacitors, and chips) to designated locations on circuit boards, directly determining the performance and reliability of electronic products. As electronic products evolve towards miniaturization, high precision, and high integration, SMT must meet three core requirements: First, precise positioning, controlling coordinate errors to ensure accurate alignment between components and circuit board pads; second, multi-size compatibility, supporting components of different sizes to achieve efficient adsorption of small components and stable fixation of large components; and third, cleanliness and reliability, avoiding clogging of component adsorption holes and residual impurities during the placement process to prevent misalignment or poor soldering, while ensuring placement efficiency to match the pace of assembly line production.

[0003] The process of placing PCB components requires frequent switching between the "component picking station" and the "PCB placement station". Existing equipment requires disassembly and reinstallation of nozzles or adjustment of positioning references when switching, which takes 10-15 minutes. In addition, when small and large components are placed at the same time, the switching frequency increases and the equipment idle rate increases, which cannot meet the needs of mixed placement of multi-specification components. Summary of the Invention

[0004] The present invention provides a surface mount processing apparatus for processing the built-in circuit board of a charger, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a surface mount processing device for processing the built-in circuit board of a charger, comprising an operating table, wherein a light rod assembly is provided on the operating table, and the light rod assembly is composed of a light rod and a rod frame; The light rod assembly is equipped with a sliding table, and a motor is fixedly installed on the outer end face of the sliding table. The output end of the motor is connected to a threaded rod through a coupling. The two ends of the threaded rod are connected to the two ends of the inner cavity of the sliding table through bearings. The threaded rod is equipped with a placement bracket. A diversion mechanism is used to guide the flow of negative pressure gas and is fixedly installed on the placement frame; The first and second mounting mechanisms are both located at the bottom of the placement frame and connected to the distribution mechanism, and are used to perform mounting and bonding processes on large and small components, respectively. The diversion mechanism includes an air pipe, the top end of which is connected to an external vacuum pump. A three-way pipe is fixedly installed at the bottom end of the air pipe. The three-way pipe is sleeved on the bottom of the placement frame. A central shaft is fixedly installed in the center of the inside of the three-way pipe. A diversion plate is rotatably installed on the outside of the central shaft. A partition plate is slidably fitted at the bottom of the diversion plate. The partition plate is fixedly connected to the inside of the three-way pipe.

[0006] Preferably, a feeding plate and a mounting plate are respectively provided on the center part of the operating table. The feeding plate is used to place the circuit board, and the mounting plate is used to place the patch.

[0007] Preferably, an electric push rod is fixedly installed on the outer side of the placement frame, the output end of the electric push rod passes through the bottom of the placement frame, and a sleeve block is fixedly connected to the outer side of the output end of the electric push rod, the bottom of the sleeve block being an inclined surface.

[0008] Preferably, a reducing post is inserted into one side of the tee tube, a spring is fixedly connected to the outside of the reducing post, and the end of the spring away from the reducing post is fixedly connected to the outside of the tee tube. The top of the outer end face of the first variable diameter column is an inclined surface and is squeezed and adapted to the first sleeve block. The end of the first variable diameter column away from the first sleeve block is squeezed and adapted to the diverter plate.

[0009] Preferably, a second electric push rod is fixedly installed on the outside of the placement frame, the output end of the second electric push rod passes through the bottom of the placement frame, and a second sleeve block is fixedly connected to the outside of the output end of the second electric push rod, the bottom of the second sleeve block being an inclined surface; The bottom of the placement rack is fitted with cylinder No. 1 and cylinder No. 2 respectively.

[0010] Preferably, a second reducing post is inserted into the side of the tee pipe away from the first reducing post, a second spring is fixedly connected to the outside of the second reducing post, and the end of the second spring away from the second reducing post is fixedly connected to the outside of the tee pipe. The top of the outer end face of the No. 2 variable diameter column is an inclined surface and is squeezed and adapted to the No. 2 sleeve block. The end of the No. 2 variable diameter column away from the No. 2 sleeve block is squeezed and adapted to the diverter plate.

[0011] Preferably, the first patching mechanism includes a first isolation frame, which is fixedly installed at the bottom of the placement frame by a connecting rod. The first isolation frame is provided with a first connecting tube inside. The top end of the first connecting tube is fixedly connected to the three-way pipe, and the outside is fixedly connected to the second cylinder. A third spring is fixedly connected to the bottom of the first connecting tube, and a fine suction nozzle is fixedly connected to the bottom end of the third spring. The fine suction nozzle is slidably adapted to the inside of the first connecting tube. The bottom end of the first electric push rod is provided with a cross groove, and a first fitting rod is slidably fitted in the cross groove. A fourth spring is fixedly connected to the outside of the first fitting rod, and the end of the fourth spring away from the first fitting rod is fixedly connected to the bottom of the first electric push rod.

[0012] Preferably, a bending rod is fixedly connected to the bottom of the first isolation frame, an electric drive rod is fixedly installed inside the bending rod, and a square plate is fixedly connected to the outer end face of the output end of the electric drive rod; The outer side of the fine suction nozzle is provided with a T-shaped groove, and a slide rod is slidably adapted in the T-shaped groove. Flexible reset pieces are fixedly connected to both the upper and lower sides of the slide rod. The other end of the flexible reset piece is fixedly connected to the T-shaped groove. A ring is fixedly installed at the bottom of the slide rod, and a cleaning needle is fixedly connected to the bottom of the ring.

[0013] Preferably, the second patching mechanism includes a second isolation frame, which is fixedly connected to the bottom of the placement frame by a connecting rod. A second connecting tube is provided inside the second isolation frame. The top end of the second connecting tube is fixedly connected to the three-way pipe, and the outer side is fixedly connected to the first cylinder. A fifth spring is fixedly connected to the bottom of the second connecting tube, and a coarse suction nozzle is fixedly connected to the bottom end of the fifth spring. The coarse suction nozzle is slidably adapted to the inside of the second connecting tube. The bottom end of the second electric push rod is provided with a cross groove, and the second fitting rod is slidably adapted in the cross groove. The outer side of the second fitting rod is fixedly connected to the sixth spring, and the end of the sixth spring away from the second fitting rod is fixedly connected to the bottom of the second electric push rod.

[0014] Preferably, a vertical rail is fixedly installed at the bottom of the second isolation frame, a No. 7 spring is fixedly connected to the top of the inner cavity of the vertical rail, a double-sided center ring is fixedly connected to the bottom of the No. 7 spring, the center part of the double-sided center ring is squeezed and adapted to the coarse suction nozzle, and the double-sided center ring is slidably adapted to the inside of the vertical rail. An infrared sensor and a No. 3 electric push rod are fixedly installed on the outer side of the vertical rail. A T-shaped groove is opened at the bottom of the vertical rail, and a locking plate is slidably fitted in the T-shaped groove. An L-shaped rod is fixedly connected to the outer end face of the output end of the No. 3 electric push rod, and the end of the L-shaped rod away from the No. 3 electric push rod is fixedly connected to the locking plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. For small components, the fine nozzle stably adsorbs the component under negative pressure. A No. 3 spring buffers the impact between the nozzle and the component, preventing damage due to compression. Simultaneously, after placement, a cleaning needle automatically inserts into the nozzle hole to remove residual impurities, preventing clogging and ensuring optimal subsequent adsorption. The negative pressure channel is quickly switched via a flow divider, ensuring that negative pressure only applies to the currently operating placement mechanism, improving negative pressure utilization and guaranteeing the stability and reliability of small component adsorption.

[0016] 2. During large component placement, an infrared sensor monitors the distance between the nozzle and the circuit board in real time. The clamping plate and double-sided center rings work together to correct the component position, preventing component misalignment. The double-sided center rings further assist in positioning during nozzle descent, while the elastic support of the No. 7 spring cushions impacts. Simultaneously, the clamping plate secures the component, preventing it from falling off due to insufficient nozzle suction. This multi-layered protection design effectively addresses the pain points of large component placement being prone to misalignment and detachment, ensuring the accuracy and stability of large component placement.

[0017] 3. The equipment is equipped with two placement mechanisms, No. 1 and No. 2, which are adapted to small components and large components respectively. The operation of the two mechanisms can be quickly switched by switching the negative pressure of the flow divider, without the need to change the nozzle or adjust the core components. Automatic cleaning of small components and automatic positioning and correction of large components are completed simultaneously, reducing manual intervention, shortening the placement cycle of a single circuit board, adapting to the high-efficiency placement production needs of batch circuit boards, and significantly improving overall operation efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of a surface mount processing device for processing the built-in circuit board of a charger according to the present invention.

[0019] Figure 2 This is a schematic diagram of the patch device of the present invention.

[0020] Figure 3 This is a schematic diagram of the diversion mechanism of the present invention.

[0021] Figure 4 This is a schematic diagram of the air tube structure in the diversion mechanism of the present invention.

[0022] Figure 5 This is a cross-sectional view of the three-way pipe in the diversion mechanism of the present invention.

[0023] Figure 6 This is a cross-sectional enlarged structural schematic diagram of the diversion plate in the diversion mechanism of the present invention.

[0024] Figure 7 This is a cross-sectional structural schematic diagram of the first patching mechanism of the present invention.

[0025] Figure 8 This is a cross-sectional enlarged structural diagram of the fine suction nozzle in the first patching mechanism of the present invention.

[0026] Figure 9 This is a cross-sectional enlarged structural diagram of the cleaning needle in the first patching mechanism of the present invention.

[0027] Figure 10 This is a cross-sectional view of the No. 2 patching mechanism of the present invention.

[0028] Figure 11 This is a cross-sectional enlarged structural diagram of the coarse suction nozzle in the No. 2 patching mechanism of the present invention.

[0029] Figure 12 This is a cross-sectional enlarged structural diagram of the locking plate in the No. 2 patching mechanism of the present invention.

[0030] In the picture: 1. Control panel; 2. Guide rod assembly; 3. Slide table; 4. Motor; 5. Threaded rod; 6. Placement rack; 7. Diverter mechanism; 71. Air pipe; 72. T-joint; 73. Central shaft; 74. Diverter plate; 75. Partition plate; 76. Electric push rod No. 1; 77. Sleeve No. 1; 78. Variable diameter column No. 1; 79. Spring No. 1; 70. Electric push rod No. 2; 701. Sleeve No. 2; 702. Variable diameter column No. 2; 703. Spring No. 2; 704. Cylinder No. 1; 705. Cylinder No. 2; 8. Patch assembly No. 1; 81. Isolation frame No. 1; 82. Connecting tube No. 1; 83. Spring No. 3; 84. Fine suction nozzle; 85. Fitting rod No. 1; 86. Spring No. 4; 87. Bending rod; 88. Electric drive rod; 89. Square plate; 80. Slide rod; 801. Resilient reset plate; 802. Ring; 803. Cleaning needle; 9. No. 2 patch mounting mechanism; 91. No. 2 isolation frame; 92. No. 2 connecting tube; 93. No. 5 spring; 94. coarse suction nozzle; 95. No. 2 fitting rod; 96. No. 6 spring; 97. vertical rail; 98. No. 7 spring; 99. double-sided center ring; 90. infrared sensor; 901. No. 3 electric push rod; 902. L-shaped rod; 903. locking plate; 10. Feeding plate; 11. Patch panel. Detailed Implementation

[0031] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 12 The present invention provides a technical solution: Example 1: Equipment positioning and adjustment stage: Precisely align with the work station.

[0033] like Figure 1 and Figure 2 As shown, the operating table 1 is a stainless steel platform, and the surface is fixedly mounted with the light rod assembly 2 by bolts. It consists of two parallel light rods and four rod frames. The bottom of the slide table 3 has light rod holes, which are slidably adapted to the light rods of the light rod assembly 2. Copper sleeves are installed in the holes to ensure that the slide table 3 moves smoothly along the light rods. The outer end face of the slide table 3 is fixed with motor 4 by motor seat bolts. It is a stepper motor. The output end of the motor 4 is connected to the threaded rod 5 through a flexible coupling. The two ends of the threaded rod 5 are mounted on the bearing seats at both ends of the inner cavity of the slide table 3 by deep groove ball bearings. The bearing seats are fixed to the inner wall of the slide table 3 by bolts. The deep groove ball bearings and bearing seats are existing technologies.

[0034] The outer side of the placement rack 6 is provided with a threaded hole that is threaded to fit the threaded rod 5; the center of the operating table 1 is fixed with a positioning pin to the material placement plate 10, which is used to place the circuit board. The surface is provided with a circuit board positioning groove and a surface mount plate 11, which is used to place surface mount components. The grooves are set according to the component specifications, and the distance between the two is 50cm, which facilitates the switching operation of the surface mount mechanism.

[0035] Initial positioning: Place the circuit board to be mounted into the positioning slot of the feeding plate 10. Small components are surface mount resistors, and they are placed into the corresponding grooves of the mounting plate 11 along with the large components, surface mount capacitors. Start the equipment control system and set the mounting coordinates.

[0036] Forward and backward adjustment: Drive the slide 3 to slide along the optical rod assembly 2, and use the grating ruler to provide feedback on the position signal until the patch mechanism at the bottom of the placement frame 6 is aligned with the patch plate 11 in the forward and backward direction, wherein the grating ruler is existing technology.

[0037] Lateral adjustment: Start motor 4 to drive threaded rod 5 to rotate, and place frame 6 moves laterally along the guide groove inside slide 3 until the first placement mechanism 8 is aligned with the small component groove of the placement plate 11 or the second placement mechanism 9 is aligned with the large component groove, thus completing the positioning adjustment.

[0038] Example 2, Small component placement stage: Adapting to negative pressure and cleaning impurities.

[0039] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the top end of the air pipe 71 of the diversion mechanism 7 is connected to an external vacuum pump via a quick connector, and the bottom end is fixed to a three-way pipe 72 via a threaded connection. The pipe 72 is made of plastic, and the two ends of the bottom end are connected to the first patching mechanism 8 and the second patching mechanism 9, respectively. The three-way pipe 72 is fixed to the bottom of the placement rack 6 by a buckle. The central shaft 73 is welded inside the three-way pipe 72, and the diversion plate 74 is mounted on the outside of the central shaft 73 via a bearing. The bottom of the diversion plate 74 is slidably adapted to the partition plate 75, which is made of metal plate and welded inside the three-way pipe 72, dividing the three-way pipe 72 into two independent channels.

[0040] The first electric push rod 76 is fixed to the outside of the placement frame 6 by bracket bolts. The output end of the first electric push rod 76 passes through the through hole at the bottom of the placement frame 6. The first sleeve block 77 is fixed to the outside by set screws. It is made of plastic and has a bottom inclination angle of 30°. A guide hole is opened on one side of the tee pipe 72 to slide and adapt to the first variable diameter column 78. The first spring 79 is sleeved on the outside of the first variable diameter column 78. One end of the first spring 79 is welded to the step of the first variable diameter column 78, and the other end is welded to the outside of the tee pipe 72. In the initial state, the spring is slightly compressed, so that one end of the first variable diameter column 78 is close to the diverter plate 74.

[0041] The first isolation frame 81 of the first patching mechanism 8 is welded to the bottom of the placement frame 6 via a connecting rod. The first connecting pipe 82 is installed inside. The top end of the first connecting pipe 82 is fixed to one end of the three-way pipe 72 via a threaded connection. The part of the three-way pipe 72 that connects to the first connecting pipe 82 is an elastic tube. The outer side of the first connecting pipe 82 is fixed to the piston rod of the second cylinder 705 via a clamp. The second cylinder 705 is used to drive the nozzle to rise and fall. The bottom of the first connecting pipe 82 is welded to the third spring 83. The bottom end of the third spring 83 is welded to the fine nozzle 84, which is a metal nozzle adapted to small components. The fine nozzle 84 slides inside the first connecting pipe 82 and can extend and retract axially.

[0042] A cross groove is formed at the bottom of the first electric push rod 76, which slides to fit the first fitting rod 85. A fourth spring 86 is sleeved on the outside of the first fitting rod 85. One end of the fourth spring 86 is welded to the step of the first fitting rod 85, and the other end is welded to the bottom of the first electric push rod 76. A bent rod 87 is welded to the bottom of the first isolation frame 81. An electric drive rod 88 is fixed inside the bent rod 87 by bolts. A square plate 89 is welded to the output end of the electric drive rod 88. The electric drive rod 88 is a telescopic rod driven by electricity. A T-shaped groove is formed on the outside of the fine suction nozzle 84, which slides to fit the sliding rod. The slide rod 80 has a flexible reset plate 801 welded to its upper and lower sides. The plate is made of spring steel. The other end of the flexible reset plate 801 is welded to the inner wall of the T-shaped groove. A circular ring 802 is welded to the bottom of the slide rod 80. A cleaning needle 803 is welded to the bottom of the circular ring 802. There are several cleaning needles 803. One of them is located at the bottom of the slide rod 80 and is concentric with the circular ring 802. The others are arranged in a circumferential array at the bottom of the circular ring 802. The circumferentially arranged cleaning needles 803 are in contact with the inner wall of the fine suction nozzle 84 for balancing the slide rod 80.

[0043] Negative pressure switching: Activating the first electric push rod 76, the output end pushes the first sleeve block 77 downwards. Its inclined surface presses against the inclined surface of the first variable diameter column 78. The first variable diameter column 78 overcomes the elastic force of the first spring 79 and moves into the three-way tube 72, pushing the flow divider plate 74 to rotate around the central axis 73 until the flow divider plate 74 deflects towards the second patching mechanism 9, closing the channel from the three-way tube 72 to the second patching mechanism 9. Negative pressure is only delivered to the fine suction nozzle 84 through the first connecting tube 82. Additionally, as the first electric push rod 76 moves downwards, the first fitting rod 85 moves downwards synchronously with the first connecting tube 82 until the fourth spring 86 is compressed and the first fitting rod 85 is completely retracted into the first electric push rod 76. The elastic force of the fourth spring 86 is less than the elastic force of the elastic tube at the bottom of the three-way tube 72, thus acting as a buffer when the second cylinder 705 drives the first connecting tube 82 to reset.

[0044] Small component adsorption: Start cylinder 705 to push connecting tube 82 and fine suction nozzle 84 down. Fine suction nozzle 84 contacts the small component on patch plate 11 and adsorbs the component under negative pressure. Spring 83 buffers the contact impact to prevent the small component from being damaged by squeezing.

[0045] Component Placement and Cleaning: The placement rack 6 moves above the circuit board of the feeding plate 10, the negative pressure is turned off, and the fine nozzle 84 releases the small component, completing the component placement; then the second cylinder 705 drives the fine nozzle 84 to move up to the highest position. Before this, the electric drive rod 88 needs to be driven to push the square plate 89 out, so that the slide bar 80 is squeezed by the square plate 89 during the upward movement of the fine nozzle 84 and moves down along the T-slot. The cleaning needle 803 is inserted into the suction hole of the fine nozzle 84 to remove residual impurities; then the square plate 89 remains extended. When the fine nozzle 84 picks up the small component, it moves down synchronously with the slide bar 80. At this time, the slide bar 80 is not squeezed by the square plate 89. However, when the fine nozzle 84 releases the small component, it moves up synchronously with the slide bar 80. At this time, the slide bar 80 is squeezed by the square plate 89.

[0046] Example 3: Large component placement stage: auxiliary positioning and prevention of falling off.

[0047] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 10 , Figure 11 and Figure 12 As shown, the second electric push rod 70 is fixed to the outside of the placement frame 6 by bracket bolts, and the second sleeve block 701 is fixed to the outside of the output end by set screws; a guide hole is opened on the other side of the three-way pipe 72 to slide and adapt the second variable diameter column 702, which has the same specifications as the first variable diameter column 78. The second spring 703 is sleeved on the outside. In the initial state, the spring is slightly compressed, so that the second variable diameter column 702 is close to the diverter plate 74; the first cylinder 704 is fixed to the bottom of the placement frame 6 by buckles.

[0048] The second isolation frame 91 of the second patching mechanism 9 is welded to the bottom of the placement frame 6 via a connecting rod. The second connecting tube 92 is installed inside, and its top end is fixed to the other end of the three-way pipe 72 via a threaded connection. The outside is fixed to the piston rod of the first cylinder 704 via a clamp. The bottom of the second connecting tube 92 is welded with a fifth spring 93, and the bottom end of the fifth spring 93 is welded with a coarse suction nozzle 94, which is a metal suction nozzle adapted to large components. The coarse suction nozzle 94 slides inside the second connecting tube 92. The bottom end of the second electric push rod 70 slides in the cross groove to adapt to the second fitting rod 95, and the outside is fitted with a sixth spring 96.

[0049] The bottom of the second isolation frame 91 is welded with a vertical rail 97, which is made of metal and has a groove on the inside. The top of the inner cavity of the vertical rail 97 is welded with a No. 7 spring 98, and the bottom of the No. 7 spring 98 is welded with a double-sided center ring 99. The two ends of the spring 99 are rods with a metal ring in the center. The inner diameter is slightly larger than the outer diameter of the coarse suction nozzle 94, and it can slide along the groove of the vertical rail 97. The infrared sensor 90 and the No. 3 electric push rod 901 are fixed to the outside of the vertical rail 97 by bracket bolts. The bottom of the vertical rail 97 has a T-shaped groove for sliding adaptation and fitting plate 903, which is made of metal and adapts to the end face of large components. The output end of the No. 3 electric push rod 901 is welded with an L-shaped rod 902, and the other end of the L-shaped rod 902 is welded to the fitting plate 903.

[0050] Activate the second electric push rod 70 to push the second sleeve block 701 downward, squeezing the second reducing column 702 to overcome the elastic force of the second spring 703, pushing the flow divider plate 74 to rotate, closing the channel of the three-way pipe 72 to the first patching mechanism 8, and delivering negative pressure to the second connecting pipe 92; activate the first cylinder 704 to push the coarse suction nozzle 94 downward, adsorbing the large components on the patching plate 11, and the fifth spring 93 buffers the contact impact to avoid damage to the large components. The functions of the second fitting rod 95 and the sixth spring 96 are the same as those of the first fitting rod 85 and the fourth spring 86.

[0051] The placement rack 6 moves above the circuit board. The infrared sensor 90 detects the distance between the coarse suction nozzle 94 and the circuit board and sends a feedback signal to the third electric push rod 901. The third electric push rod 901 pushes the locking plate 903 inward through the L-shaped rod 902, cooperating with the double-sided center ring 99 to correct the component position. Then, the coarse suction nozzle 94 continues to move downward, squeezing the double-sided center ring 99 to move down along the vertical rail 97 and stretching the seventh spring 98 until the double-sided center ring 99 moves to the same height as the infrared sensor 90. After the infrared sensor 90 detects the double-sided center ring 99, it drives the locking plate 903 to clamp again to prevent the component from falling off due to insufficient suction of the coarse suction nozzle 94. The negative pressure is turned off, the coarse suction nozzle 94 releases the component, and the placement is completed. The first cylinder 704 drives the coarse suction nozzle 94 to reset, the seventh spring 98 drives the double-sided center ring 99 to reset, and the locking plate 903 is reset under the drive of the third electric push rod 901.

[0052] The working principle of this invention is as follows: The guide rod assembly 2 on the operating table 1 provides a moving reference for the slide table 3, which can slide along the guide rod assembly 2 to adjust its forward and backward position. After the motor 4 is started, it drives the threaded rod 5 to rotate, and the placement frame 6, which is threadedly adapted to the threaded rod 5, moves along the inner cavity of the slide table 3 to achieve lateral position adjustment. Through the coordinated lateral and forward and backward movement, the first placement mechanism 8 and the second placement mechanism 9 at the bottom of the placement frame 6 can be accurately aligned with the feeding plate 10 and the placement plate 11 on the operating table 1. The feeding plate 10 and the placement plate 11 respectively place the circuit board and the surface mount component, laying the positioning foundation for subsequent surface mount operations.

[0053] The flow divider 7 provides appropriate adsorption force for different patching mechanisms through negative pressure flow divider: the external vacuum pump delivers negative pressure to the three-way pipe 72 through the air pipe 71, and the flow divider plate 74 inside the three-way pipe 72 rotates around the central axis 73, and works with the partition plate 75 to realize the switching of negative pressure channels. When processing small components, the first electric push rod 76 pushes the first sleeve block 77 downward, and its inclined surface squeezes the first variable diameter column 78. The first variable diameter column 78 moves against the elastic force of the first spring 79, pushing the diverter plate 74 to turn to the side of the second mounting mechanism 9, closing the corresponding channel. The negative pressure is concentrated and delivered to the first connecting pipe 82 of the first mounting mechanism 8, realizing the negative pressure adaptation for the adsorption of small components. When processing large components, the second electric push rod 70 pushes the second sleeve block 701 downward, squeezing the second variable diameter column 702 and overcoming the elastic force of the second spring 703, causing the diverter plate 74 to turn to the side of the first mounting mechanism 8. The negative pressure is switched to the second connecting pipe 92 of the second mounting mechanism 9, realizing the negative pressure adaptation for the adsorption of large components.

[0054] After negative pressure is supplied to the first connecting pipe 82, the fine suction nozzle 84 adsorbs small components on the patch panel 11 under the action of negative pressure; the third spring 83 buffers the contact impact between the fine suction nozzle 84 and the small components to avoid damage to the components. After the placement rack 6 moves above the circuit board, the negative pressure is closed, and the fine suction nozzle 84 releases the components to complete the patching; at the same time, when the fine suction nozzle 84 is driven down to the lowest position by the second cylinder 705, the electric drive rod 88 in the bending rod 87 pushes the square plate 89 to extend outward and is directly above the slide rod 80. As the fine suction nozzle 84 is driven up to the highest position by the second cylinder 705, the square plate 89 drives the slide rod 80 to slide down along the T-shaped groove of the fine suction nozzle 84. The ring 802 moves down synchronously with the cleaning needle 803 to clean the residual impurities at the suction port of the fine suction nozzle 84. The toughness reset plate 801 assists the slide rod 80 in resetting and ensures the accuracy of the next adsorption.

[0055] When negative pressure is applied to the second connecting pipe 92, the coarse suction nozzle 94 picks up the large component. The fifth spring 93 buffers the impact between the coarse suction nozzle 94 and the large component, preventing damage to the component. After moving above the circuit board, the infrared sensor 90 detects the distance between the coarse suction nozzle 94 and the circuit board, and sends a feedback signal to the third electric push rod 901. The third electric push rod 901 pushes the locking plate 903 through the L-shaped rod 902, which, together with the double-sided center ring 99, assists in positioning the large component. The seventh spring 98 plays a reset role, ensuring that the component is accurately attached to the circuit board. After the negative pressure is turned off, the coarse suction nozzle 94 releases the component, completing the placement of the large component. Additionally: When the coarse suction nozzle 94 moves down and squeezes the double-sided center ring 99, the double-sided center ring 99 moves down along the vertical rail 97 and stretches the No. 7 spring 98. At this time, the infrared sensor 90 and the double-sided center ring 99 are at the same height. Then, the infrared sensor 90 pushes the locking plate 903 again through the L-shaped rod 902 to clamp the two sides of the large component to prevent the coarse suction nozzle 94 from having insufficient suction.

[0056] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made by those skilled in the art based on the above concepts without creative effort shall fall within the scope of protection of the present invention.

Claims

1. A surface mount processing apparatus for processing the built-in circuit board of a charger, characterized in that, include: An operating table, on which a light rod assembly is provided, the light rod assembly consisting of a light rod and a rod frame; The light rod assembly is equipped with a sliding table, and a motor is fixedly installed on the outer end face of the sliding table. The output end of the motor is connected to a threaded rod through a coupling. The two ends of the threaded rod are connected to the two ends of the inner cavity of the sliding table through bearings. The threaded rod is equipped with a placement bracket. A diversion mechanism is used to guide the flow of negative pressure gas and is fixedly installed on the placement frame; The first and second mounting mechanisms are both located at the bottom of the placement frame and connected to the distribution mechanism, and are used to perform mounting and bonding processes on large and small components, respectively. The diversion mechanism includes an air pipe, the top end of which is connected to an external vacuum pump. A three-way pipe is fixedly installed at the bottom end of the air pipe. The three-way pipe is sleeved on the bottom of the placement frame. A central shaft is fixedly installed in the center of the inside of the three-way pipe. A diversion plate is rotatably installed on the outside of the central shaft. A partition plate is slidably fitted at the bottom of the diversion plate. The partition plate is fixedly connected to the inside of the three-way pipe.

2. The surface mount processing apparatus for processing the built-in circuit board of a charger according to claim 1, characterized in that: The center of the operating table is provided with a feeding plate and a mounting plate. The feeding plate is used to place the circuit board and the mounting plate is used to place the chip.

3. The surface mount processing apparatus for processing the built-in circuit board of a charger according to claim 1, characterized in that: An electric push rod is fixedly installed on the outside of the placement frame. The output end of the electric push rod passes through the bottom of the placement frame. A sleeve block is fixedly connected to the outside of the output end of the electric push rod. The bottom of the sleeve block is an inclined surface.

4. The surface mount processing apparatus for processing the built-in circuit board of a charger according to claim 3, characterized in that: A reducing post is inserted into one side of the tee tube, and a spring is fixedly connected to the outside of the reducing post. The end of the spring away from the reducing post is fixedly connected to the outside of the tee tube. The top of the outer end face of the first variable diameter column is an inclined surface and is squeezed and adapted to the first sleeve block. The end of the first variable diameter column away from the first sleeve block is squeezed and adapted to the diverter plate.

5. The surface mount processing apparatus for processing the built-in circuit board of a charger according to claim 4, characterized in that: A second electric push rod is fixedly installed on the outside of the placement frame. The output end of the second electric push rod passes through the bottom of the placement frame. A second sleeve block is fixedly connected to the outside of the output end of the second electric push rod. The bottom of the second sleeve block is an inclined surface. The bottom of the placement rack is fitted with cylinder No. 1 and cylinder No. 2 respectively.

6. The surface mount processing apparatus for processing the built-in circuit board of a charger according to claim 5, characterized in that: A second reducing post is inserted into the side of the three-way pipe away from the first reducing post. A second spring is fixedly connected to the outside of the second reducing post. The end of the second spring away from the second reducing post is fixedly connected to the outside of the three-way pipe. The top of the outer end face of the No. 2 variable diameter column is an inclined surface and is squeezed and adapted to the No. 2 sleeve block. The end of the No. 2 variable diameter column away from the No. 2 sleeve block is squeezed and adapted to the diverter plate.

7. The surface mount processing apparatus for processing the built-in circuit board of a charger according to claim 3, characterized in that: The first patching mechanism includes a first isolation frame, which is fixedly installed at the bottom of the placement frame via a connecting rod. A first connecting tube is provided inside the first isolation frame. The top end of the first connecting tube is fixedly connected to the three-way pipe, and the outer side is fixedly connected to the second cylinder. A third spring is fixedly connected to the bottom of the first connecting tube, and a fine suction nozzle is fixedly connected to the bottom end of the third spring. The fine suction nozzle slides and adapts to the inside of the first connecting tube. The bottom end of the first electric push rod is provided with a cross groove, and a first fitting rod is slidably fitted in the cross groove. A fourth spring is fixedly connected to the outside of the first fitting rod, and the end of the fourth spring away from the first fitting rod is fixedly connected to the bottom of the first electric push rod.

8. The surface mount processing apparatus for processing the built-in circuit board of a charger according to claim 7, characterized in that: A bending rod is fixedly connected to the bottom of the first isolation frame, an electric drive rod is fixedly installed inside the bending rod, and a square plate is fixedly connected to the outer end face of the output end of the electric drive rod. The outer side of the fine suction nozzle is provided with a T-shaped groove, and a slide rod is slidably adapted in the T-shaped groove. Flexible reset pieces are fixedly connected to both the upper and lower sides of the slide rod. The other end of the flexible reset piece is fixedly connected to the T-shaped groove. A ring is fixedly installed at the bottom of the slide rod, and a cleaning needle is fixedly connected to the bottom of the ring.

9. The surface mount processing apparatus for processing the built-in circuit board of a charger according to claim 5, characterized in that: The second patching mechanism includes a second isolation frame, which is fixedly connected to the bottom of the placement rack via a connecting rod. A second connecting tube is provided inside the second isolation frame. The top end of the second connecting tube is fixedly connected to the three-way pipe, and the outer side is fixedly connected to the first cylinder. A fifth spring is fixedly connected to the bottom of the second connecting tube, and a coarse suction nozzle is fixedly connected to the bottom end of the fifth spring. The coarse suction nozzle slides and adapts to the inside of the second connecting tube. The bottom end of the second electric push rod is provided with a cross groove, and the second fitting rod is slidably adapted in the cross groove. The outer side of the second fitting rod is fixedly connected to the sixth spring, and the end of the sixth spring away from the second fitting rod is fixedly connected to the bottom of the second electric push rod.

10. A surface mount processing apparatus for processing the built-in circuit board of a charger according to claim 9, characterized in that: A vertical rail is fixedly installed at the bottom of the second isolation frame. A No. 7 spring is fixedly connected to the top of the inner cavity of the vertical rail. A double-sided center ring is fixedly connected to the bottom of the No. 7 spring. The center part of the double-sided center ring is squeezed and adapted to the coarse suction nozzle. The double-sided center ring is slidably adapted to the inside of the vertical rail. An infrared sensor and a No. 3 electric push rod are fixedly installed on the outer side of the vertical rail. A T-shaped groove is opened at the bottom of the vertical rail, and a locking plate is slidably fitted in the T-shaped groove. An L-shaped rod is fixedly connected to the outer end face of the output end of the No. 3 electric push rod, and the end of the L-shaped rod away from the No. 3 electric push rod is fixedly connected to the locking plate.

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