Switching power supply automatic assembly production line with pressure loss prevention function

Abstract

The application discloses a switch power supply automatic assembly production line with a pressure loss prevention function, relates to the technical field of switch power supply production, and comprises a board separating unit, a circulating transfer unit is arranged on one side of the board separating unit, a shell feeding unit is arranged at one end of the circulating transfer unit, a shell cover feeding unit is arranged at the other end of the circulating transfer unit, an assembling unit can realize the assembly of a PCBA board, a shell cover and a shell, a detection unit is arranged above the circulating transfer unit and can detect the assembly state of the PCBA board, the shell cover and the shell, and a transfer manipulator can transfer the PCBA board on the board separating unit, the shell on the shell feeding unit and the shell cover on the shell cover feeding unit to the circulating transfer unit. Through the design of a pressure loss prevention structure and the linkage of multi-station real-time detection, the problems of a high pressure loss rate and detection lag in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the field of switching power supply manufacturing technology, specifically to an automated assembly line for switching power supplies with anti-voltage loss function. Background Technology

[0002] A switching power supply is an electronic component with a circuit board inside a fixed housing. Traditional switching power supply assembly is mostly done manually or on semi-automated production lines. During manual assembly, the fit between the PCBA board (printed circuit board with components already assembled) and the housing, as well as between the housing cover and the housing, depends on the operator's experience. Improper pressure control can easily damage the PCBA board components, especially causing clip breakage on plastic housings and deformation on metal housings.

[0003] Existing production lines mostly perform spot checks at the final stage, making it impossible to monitor the assembly status of each process in real time. This results in defective products flowing into subsequent processes and wasting materials. Summary of the Invention

[0004] The purpose of this invention is to provide an automated assembly line for switching power supplies with anti-pressure loss function. Through anti-pressure loss structural design and real-time multi-station detection linkage, the problems of high pressure loss rate and detection lag in the prior art can be solved.

[0005] The above-mentioned optimized structure of the present invention is achieved through the following technical solution: an automated assembly line for switching power supplies with anti-pressure loss function, including a board splitting unit; A circulating transfer unit is located on one side of the dividing plate unit; A housing feeding unit is provided at one end of the circulating transfer unit; A shell cover feeding unit is located at the other end of the circulating transfer unit; An assembly unit that can assemble the PCBA board, cover, and housing; The detection unit is located above the circulating transfer unit and can detect the assembly status of the PCBA board, cover and housing; Multiple transfer robots can transfer PCBA boards from the board separation unit, housings from the housing feeding unit, and housing covers from the housing cover feeding unit to the circulating transfer unit.

[0006] In some embodiments, the plate-splitting unit includes a splitting device, which is disposed on one side of the circulating transfer unit; A multi-dividing device is provided between the dividing device and the circulating transfer unit; A pitch-changing device is provided between the multi-part device and the circulating transfer unit; A conveying device is located on one side of the circulating transfer unit and can reciprocate between the splitting device, the multi-splitting device, and the variable pitch device.

[0007] In some embodiments, the pitch-changing device includes two pitch-changing cylinders, which are symmetrically arranged on the side of the multi-splitting device away from the splitting device; Four fixing blocks are symmetrically arranged between the two variable pitch cylinders; Two sliding rods are provided, which are located between the two fixed blocks and are perpendicular to the moving direction of the variable pitch cylinder. Multiple placement plates are slidably mounted on two sliding rods, and a return spring is provided between two adjacent placement plates. Multiple pitch bars are symmetrically arranged on the output shaft of the pitch cylinder and are inserted into the gap between two adjacent placement plates.

[0008] In some embodiments, the cyclic transfer unit includes an annular guide rail, which is disposed on one side of the plate-separating unit, and the assembly unit and the detection unit are disposed above the annular guide rail; Multiple transfer components are equidistantly and slidably disposed on the annular guide rail.

[0009] In some embodiments, the assembly unit includes a first assembly device that enables the placement of a PCBA board within a housing; A dispensing device, which can dispensing adhesive onto the housing; The second assembly device can assemble the cover and the housing.

[0010] In some embodiments, the second assembly device includes an assembly rack disposed between the shell cover feeding unit and the circulating transfer unit; A movable component, the movable component being disposed on top of the assembly frame; A lifting assembly, wherein the lifting assembly is disposed at the bottom of the moving assembly; A gripping component is located at the bottom of the lifting component.

[0011] In some embodiments, the gripping component includes a gripping plate disposed at the bottom of the lifting component; Multiple lifting slots are arranged in a matrix at the bottom of the gripping plate; A piston, which is slidably and sealingly disposed within the lifting groove; A gripping suction cup is located at the bottom of the piston; A sensor is disposed on the top wall inside the lifting groove; A vent pipe is provided, which is connected to the side wall of the lifting trough.

[0012] In some embodiments, the dispensing device includes a dispensing frame that spans the circulating transfer unit; An obstacle avoidance cylinder is mounted on the dispensing frame; A displacement assembly, which is connected to the output shaft of the avoidance cylinder; Multiple dispensing components are rectangularly arranged on the displacement assembly.

[0013] In some embodiments, the detection unit includes a first detection device, which is disposed between the first assembly device and the dispensing device; A dispensing detection device is disposed between the dispensing device and the second assembly device; The second detection device is located on the side of the second assembly device away from the dispensing detection device.

[0014] In some embodiments, both the first detection device and the second detection device include a detection frame, which is straddling the circulating transfer unit; A movable structure, wherein the movable structure is disposed on the top of the detection frame; Two first displacement sensors are disposed on one side of the moving structure; Two second displacement sensors are disposed on one side of the movable structure, and the first displacement sensor is disposed between two adjacent second displacement sensors. The first displacement sensor protrudes from the second displacement sensor.

[0015] The above-described technical solutions in the embodiments of the present invention have at least the following technical effects or advantages: This invention achieves flexible pressing of the cover and housing through the cooperation of a piston and a sensor, thereby reducing the pressure loss rate of the housing. By setting a detection unit at a corresponding position above the circulating transfer unit, the entire process from PCBA placement and dispensing to cover assembly can be monitored, and defective products can be rejected in real time, thereby reducing material waste and costs. At the same time, the pitch-changing device can adjust the spacing between multiple single boards after board separation to adapt to different spacing requirements in subsequent workstations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of the present invention; Figure 2 This is a schematic diagram of the structure of the panel unit of the present invention; Figure 3 This is a schematic diagram of the pitch-changing device of the present invention; Figure 4 This is a schematic diagram of the dispensing device of the present invention; Figure 5 This is a schematic diagram of the structure of the second assembly device of the present invention; Figure 6 This is a cross-sectional view of the grasping component of the present invention; Figure 7 This is a schematic diagram of the dispensing detection device of the present invention; Figure 8 This is a schematic diagram of the structure of the first detection device of the present invention.

[0018] In the diagram: 1. Separating unit; 11. Splitting device; 12. Multi-splitting device; 13. Pitch-changing device; 131. Pitch-changing cylinder; 132. Fixing block; 133. Sliding rod; 134. Placement plate; 135. Pitch-changing bar; 14. Handling device; 2. Circulating transfer unit; 21. Circular guide rail; 22. Transfer assembly; 3. Shell feeding unit; 4. Shell cover feeding unit; 5. Assembly unit; 51. First assembly device; 52. Dispensing device; 521. Dispensing frame; 522. Avoidance cylinder; 523. Positioning assembly; 524. 53. Dispensing component; 531. Second assembly device; 532. Assembly frame; 533. Moving component; 534. Lifting component; 535. Gripping component; 5341. Gripping plate; 5342. Lifting groove; 5343. Piston; 5344. Gripping suction cup; 5345. Sensor; 5346. Vent pipe; 6. Detection unit; 61. First detection device; 611. Detection frame; 612. Moving structure; 613. First displacement sensor; 614. Second displacement sensor; 62. Dispensing detection device; 63. Second detection device. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] refer to Figure 1-8This automated assembly line for switching power supplies, equipped with anti-pressure loss function, includes a board splitting unit 1, a circulating transfer unit 2, a housing feeding unit 3, a housing cover feeding unit 4, an assembly unit 5, an inspection unit 6, and multiple transfer robots. The board splitting unit 1 can divide the entire PCBA into individual workpieces, facilitating the subsequent assembly of individual boards and housings. The circulating transfer unit 2 is located on one side of the board splitting unit 1, enabling continuous flow of workpieces between processes, facilitating the assembly of the switching power supply. The housing feeding unit 3 is located at one end of the circulating transfer unit 2, enabling automatic feeding of housings. The housing cover feeding unit 4 is located at the other end of the circulating transfer unit 2, enabling automatic feeding of housing covers. Both the housing feeding unit 3 and the housing cover feeding unit 4 can adopt a vibratory feeder + linear feeder structure. The vibratory feeder can be equipped with an air blowing device to blow air onto the housings and covers on the vibratory feeder to identify the front and back of the housings and covers, ensuring the consistency of housing and cover material transportation and facilitating subsequent operations. Assembly unit 5 enables automated assembly of PCBA boards, housings, and covers. Inspection unit 6, located above the circulating transfer unit 2, detects the assembly status of PCBA boards, covers, and housings, achieving real-time inspection throughout the entire process. A transfer robot can transport PCBA boards from the board separation unit 1, housings from the housing feeding unit 3, and covers from the cover feeding unit 4 to the circulating transfer unit 2. The transfer robot can be a SCARA robot, equipped with quick-change grippers at its end effector compatible with PCBA boards, housings, and covers, achieving material transfer through visual positioning.

[0024] In some embodiments, the board splitting unit 1 includes a splitting device 11, a multi-splitting device 12, a pitch-changing device 13, and a conveying device 14. The splitting device 11 is fixed to one side of the circulating transfer unit 2 and can split the entire PCBA board into two half-boards along the pre-splitting line in the middle. Specifically, a thin aligning plate can be pressed against the pre-splitting line of the entire board, and the two sides of the entire board can be rotated upwards to form a structure similar to a splitting plate, thereby achieving symmetrical division of the entire board. The multi-splitting device 12 is mounted between the splitting device 11 and the circulating transfer unit 2 via a guide rail, and can further divide the half-board into single boards. A staggered stamping process can be used to divide the half-board into multiple single boards. The pitch-changing device 13 is installed on the side of the multi-splitting device 12 near the circulating transfer unit 2 and is used to adjust the spacing between the split single boards. The spacing is adjusted to accommodate subsequent transfer needs, improving accuracy and efficiency. The handling device 14 can be a combination of a horizontal moving cylinder, a vertical moving cylinder, and a suction cup assembly. The horizontal moving cylinder enables the handling device 14 to reciprocate between the splitting device 11, the multi-splitting device 12, and the variable-pitch device 13. The vertical moving cylinder enables the handling device 14 to change in height. The suction cup assembly, connected to an external air source, generates negative pressure to achieve the adsorption and fixation of half boards and single boards, thereby realizing the transfer of PCBA boards between the splitting device 11, the multi-splitting device 12, and the variable-pitch device 13.

[0025] In some embodiments, the pitch control device 13 includes two pitch cylinders 131, four fixing blocks 132, two sliding rods 133, multiple placement plates 134, and multiple pitch bars 135. The two variable pitch cylinders 131 can be double-rod cylinders, symmetrically installed on the base of the multi-dividing device 12 on the side away from the splitting device 11, with their output shafts facing each other; the four fixing blocks 132 can be L-shaped metal blocks, symmetrically fixed on the base in pairs, located between the two variable pitch cylinders 131; the two sliding rods 133 can be chrome-plated optical shafts, horizontally mounted between the two sets of fixing blocks 132, with their axes perpendicular to the output shaft direction of the variable pitch cylinders 131; the multiple placement plates 134 can be rectangular plastic plates, with placement grooves on the top matching the single plates, and the bottom can be sleeved on the sliding rods 133 through linear bearings, with reset springs connecting adjacent placement plates 134; the multiple variable pitch strips 135 can be wedge-shaped metal pieces with an inclination angle of 30°, symmetrically fixed to the end of the output shaft of the variable pitch cylinders 131, and can be inserted into the gap between adjacent placement plates 134. When the output shaft of the variable pitch cylinder 131 extends, the variable pitch bar 135 pushes the placement plate 134 to slide along the sliding rod 133, increasing the distance between the plates; when the output shaft retracts, the reset spring pulls the placement plate to reset, thereby adjusting the distance.

[0026] In some embodiments, the cyclic transfer unit 2 includes an annular guide rail 21 and multiple transfer components 22. The annular guide rail 21 may be a closed double-rail structure and may be equipped with a servo-driven synchronous belt; the multiple transfer components 22 are equally spaced on the slider of the annular guide rail 21. Each transfer component 22 may include a positioning fixture (with adjustable stops) and a piezoelectric sensor. A silicone anti-slip pad (2mm thick) may be attached to the surface of the fixture to stably place the housing or semi-finished product. It moves cyclically with the annular guide rail 21 to achieve continuous multi-station flow. The cyclic movement of multiple transfer components 22 on the annular guide rail 21 is prior art and will not be described in detail here.

[0027] In some embodiments, the assembly unit 5 includes a first assembly device 51, a dispensing device 52, and a second assembly device 53. The first assembly device 51 is located between the housing feeding unit 3 and the annular guide rail 21. The first assembly device 51 can be a four-axis SCARA robot, which can be located above the first station of the cyclic transfer unit 2. Its end can be equipped with a flexible gripper, which can accurately place the single board on the pitch device 13 into the housing of the transfer assembly 22 to realize the installation between the single board and the housing. The gripper can have a built-in pressure sensor, which will automatically alarm when the clamping force exceeds the threshold to avoid deformation of the PCBA board. The dispensing device 52 can be located above the second station of the cyclic transfer unit 2 to apply sealant to the edge of the housing to realize the dispensing of the housing. The second assembly device 53 can be installed above the third station of the cyclic transfer unit 2 to grab the housing cover of the housing cover feeding unit 4 and fasten it to the housing after applying the sealant, thereby realizing the assembly of the housing cover and the housing.

[0028] In some embodiments, the second assembly device 53 includes an assembly frame 531, a moving component 532, a lifting component 533, and a gripping component 534. The assembly frame 531 may be an aluminum profile frame spanning between the housing supply unit 4 and the circulating transfer unit 2; the moving component 532 may be a linear motor module fixed to the top crossbeam of the assembly frame 531; the lifting component 533 is mounted on the bottom of the slider of the moving component 532; the gripping component 534 is fixed to the output shaft end of the lifting component 533 and is used to grip and transfer the housing cover, adaptable to housing covers of different sizes.

[0029] In some embodiments, the gripping assembly 534 includes a gripping plate 5341, a plurality of lifting slots 5342, a piston 5343, a gripping suction cup 5344, a sensor 5345, and a vent pipe 5346. The gripping plate 5341 may be a rectangular metal plate, fixed to the bottom of the lifting assembly 533; the plurality of lifting slots 5342 are distributed in a matrix at the bottom of the gripping plate 5341; the piston 5343 may be a T-shaped rubber stopper, which is sealed and slidably engaged with the inner wall of the lifting slot 5342; the gripping suction cup 5344 may be made of silicone material, which can be fixed to the bottom of the piston 5343 by threaded connection; the sensor 5345 is a pressure sensor, installed on the inner top wall of the lifting slot 5342, which can detect the pressure intensity inside the lifting slot 5342; the vent pipe 5346 may be a PU tube, one end of which is connected to a through hole in the side wall of the lifting slot 5342, and the other end is connected to a pneumatic device. When the gripping suction cup 5344 contacts the cover, the vacuum generator operates to create negative pressure to adsorb the cover. When the cover is pressed onto the housing, the pneumatic device inflates the lifting groove 5342, increasing the air pressure inside the lifting groove 5342. This causes the piston 5343 to descend, pulling the gripping suction cup 5344 down and pressing the cover onto the housing. The sensor 5345 senses the air pressure intensity inside the lifting groove 5342 in real time. Due to the interaction of forces, the magnitude of the force exerted on the piston 5343 by the gripping suction cup 5344 is the magnitude of the air pressure inside the lifting groove 5342, and also the magnitude of the pressure sensed by the sensor 5345. This enables real-time monitoring of the force between the cover and the housing. When the sensed value exceeds the set value, the gripping stops to prevent damage to the cover and housing.

[0030] In some embodiments, the dispensing device 52 includes a dispensing frame 521, an obstacle avoidance cylinder 522, a positioning assembly 523, and multiple dispensing elements 524. The dispensing frame 521 may be a gantry frame spanning above the circulating transfer unit 2; the obstacle avoidance cylinder 522 may be a single-rod cylinder, horizontally mounted on the crossbeam of the dispensing frame 521; the positioning assembly 523 has a lateral and longitudinal moving structure, which can drive the dispensing elements 524 to move laterally and longitudinally to achieve adhesive application to the housing. Multiple dispensing elements 524 are rectangularly distributed and fixed on the positioning assembly 523, and may be needle-type dispensing valves. Each dispensing element is equipped with an independent heating jacket and flow sensor to adapt to adhesives of different viscosities. The distribution of multiple dispensing elements 524 corresponds to the position of the housing, achieving a one-to-one correspondence between the housing and the dispensing elements 524, thus improving dispensing efficiency.

[0031] In some embodiments, the detection unit 6 includes a first detection device 61, a dispensing detection device 62, and a second detection device 63. The first detection device 61 can be mounted on the annular guide rail 21 between the first assembly device 51 and the dispensing device 52 via a bracket, and can detect the placement position of the single board inside the housing; the dispensing detection device 62 can be a visual inspection camera with a resolution of 20 megapixels, mounted between the dispensing device 52 and the second assembly device 53, and can identify whether the dispensing trajectory is continuous and whether the amount of glue is up to standard. Defective products are marked and removed by a subsequent rejection device; the second detection device 63 is mounted on a gantry on the side of the second assembly device 53 away from the dispensing detection device 62, and can detect the fastening quality of the cover and the housing. Defective products can be rejected from the annular guide rail 21 by an air blowing device.

[0032] In some embodiments, both the first detection device 61 and the second detection device 63 include a detection frame 611, a moving structure 612, two first displacement sensors 613, and two second displacement sensors 614. The detection frame 611 may be an aluminum profile frame straddling the annular guide rail 21; the moving structure 612 may be a drive cylinder mounted on top of the detection frame 611; the two first displacement sensors 613 may be infrared displacement sensors, fixed to one side of the moving structure 612 by brackets, and can detect the height between a corner of the top surface of the housing and the first displacement sensor 613; the two second displacement sensors 614 may be infrared displacement sensors, symmetrically arranged on both sides of the first displacement sensor 613, and can detect the height between a corner of the top surface of the housing and the first displacement sensor 613. The detection end of the first displacement sensor 613 may protrude more than the detection end of the second displacement sensor 614. The first displacement sensor 613 and the second displacement sensor 614 of the first detection device 61 detect the height value between two opposite corners of the housing, thereby determining whether there is a single board inside the housing and the flatness of the single board placed inside the housing. NG products are automatically rejected. The first displacement sensor 613 and the second displacement sensor 614 of the second detection device 63 detect the height value between two opposite corners of the housing, thereby determining whether the surface of the housing cover is flat and whether it is installed in place.

[0033] In some embodiments, the production line can be linked by a PLC control system: the cycle time of the board splitting unit 1 is matched with the station flow speed of the circulating transfer unit 2; the action trigger signal of the assembly unit 5 is linked with the qualified signal of the detection unit 6 (only qualified products enter the next process); the threshold values ​​of all pressure sensors and displacement sensors can be set via a touch screen to adapt to the assembly requirements of different models of switching power supplies.

[0034] The specific working principle is as follows: The entire PCBA board can be transported by a robotic arm to the splitting device 11 of the splitting unit 1. A "splitting" action symmetrically divides the board into two halves along a pre-splitting line (avoiding stress damage from traditional cutting). The transport device 14 is activated; a horizontally moving cylinder drives the suction cup assembly above the splitting device 11, while a vertically moving cylinder descends to bring the suction cup into contact with the half-board. An external air source generates negative pressure through the suction cup to adsorb the half-board, which is then moved horizontally to the feeding table of the multi-splitting device 12. The multi-splitting device 12 employs a staggered stamping structure, using stamping pressure to equally divide the half-board into multiple individual boards. After splitting, the transport device 14 transfers the individual boards to the placement plate 134 of the variable-pitch device 13 (the positioning groove on the top of the placement plate matches the edge of the individual board to prevent offset).

[0035] The pitch-changing device 13 adjusts the pitch according to the subsequent transfer requirements: the output shafts of the two pitch-changing cylinders 131 extend and push the wedge-shaped pitch-changing bar 135 into the gap between adjacent placement plates 134. The placement plates slide along the sliding rod 133 and compress the return spring, so that the distance between the plates increases from the initial 30mm to 60mm (adapting to the fixture distance of the circulating transfer unit 2). After the adjustment is completed, the pitch-changing cylinders 131 reset, and the return spring pulls the placement plates to maintain a stable distance, preparing for the next single-plate pitch change.

[0036] The shell feeding unit 3 uses a vibratory feeder to organize the shells, and an air blowing device inside the feeder identifies the front and back of the shells. Qualified shells are sent to the picking position by a linear feeder, where a robotic arm grabs them and places them into the transfer component 22 of the circulating transfer unit 2. After confirming that the placement is stable, the synchronous belt of the annular guide rail 21 drives the transfer component to the next station.

[0037] The flexible gripper of the first assembly device 51 moves above the pitch-changing device 13. The opening angle of the gripper is adapted to the size of the single board. After the gripper grabs the single board, it moves above the transfer component 22 and descends vertically to put the single board into the housing groove. The pressure sensor monitors the placement pressure in real time. If jamming causes the pressure to exceed the limit, the operation will stop immediately and an alarm will be triggered.

[0038] The housing containing the single board moves with the transfer assembly 22 to below the first detection device 61. The first displacement sensor 613 and the second displacement sensor 614 detect the height difference between the two opposite corners of the housing. If the height difference exceeds the limit (e.g., the PCBA is not placed or is tilted), it is judged as an NG product and marked. The housing is moved by the moving structure 612 to detect the next group of housings. After detection, the transfer assembly 22 delivers the housing containing the single board to below the dispensing device 52. The displacement assembly 523 moves the dispensing component 524 to the edge of the housing, and the dispensing component 524 performs the dispensing operation on the housing. After dispensing, the transfer assembly 22 continues to move to below the dispensing detection device 62. The dispensing detection device 62 takes an image of the glue line and judges the continuity of the glue line through image recognition. Defective products are marked and then rejected by the subsequent air blowing device.

[0039] After the shell cover of the shell cover feeding unit 4 is arranged, the moving component 532 of the second assembly device 53 drives the gripping component 534 to the picking position. The lifting component 533 descends so that the gripping suction cup 5344 contacts the shell cover, and the vacuum generator generates negative pressure to adsorb the shell cover. The gripping plate 5341 moves above the shell, the lifting component 533 descends, and when the shell cover contacts the shell, the piston 5343 is pressurized and rises, the air pressure in the lifting groove 5342 increases, the sensor 5345 detects the pressure increase, the external pneumatic device starts, and other materials are transported into the lifting groove 5342. When the sensor 5345 detects that the pressure has reached the set value, the external pneumatic device stops, realizing flexible fastening.

[0040] More specifically, see the following references: Figure 6 As shown, the gripping component 534 moves above the housing and descends. Once the housing cover makes initial contact with the housing, the external pneumatic device activates, injecting compressed air into the vent pipe 5346 and the lifting groove 5342. The increased air pressure pushes the piston 5343 and the gripping suction cup 5344 downwards steadily, applying pressure to the housing cover. Due to the compressibility of gas, this pressure is flexible. During the pressing process, the sensor 5345 monitors the air pressure value in the lifting groove 5342 in real time. This air pressure value is proportional to the force applied to the housing cover. When the pressure value detected by the sensor 5345 reaches a preset qualified threshold, the pneumatic device stops inflating, thereby completing precise force-controlled pressing and effectively avoiding pressure loss caused by excessive force.

[0041] The transfer component 22 continues to transfer the product to the area below the second detection device 63. The second detection device 63 detects the height difference between the two opposite corners of the shell cover surface. After confirming that the product is qualified, the finished product is transferred to the unloading conveyor belt. Unqualified products are removed from the production line by the rejection device at the end of the circular guide rail.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automated assembly line for switching power supplies with anti-pressure loss function, characterized in that: Including the sub-board unit (1); A circulating transfer unit (2) is provided on one side of the dividing plate unit (1); Shell feeding unit (3), the shell feeding unit (3) is located at one end of the circulating transfer unit (2); Shell cover feeding unit (4), the shell cover feeding unit (4) is located at the other end of the circulating transfer unit (2); Assembly unit (5), which can realize the assembly of PCBA board, cover and housing; The detection unit (6) is located above the circulating transfer unit (2) and can detect the assembly status of the PCBA board, the cover and the housing; Multiple transfer robots can transfer the PCBA board on the board-separating unit (1), the housing on the housing feeding unit (3), and the housing cover on the housing cover feeding unit (4) to the circulating transfer unit (2). The plate-splitting unit (1) includes a splitting device (11), which is located on one side of the circulating transfer unit (2); A multi-dividing device (12) is provided between the dividing device (11) and the circulating transfer unit (2); A pitch-changing device (13) is provided between the multi-part device (12) and the circulating transfer unit (2); The conveying device (14) is located on one side of the circulating transfer unit (2) and can reciprocate between the splitting device (11), the multi-splitting device (12) and the variable pitch device (13).

2. The automated assembly line for switching power supplies with anti-pressure loss function according to claim 1, characterized in that: The pitch-changing device (13) includes two pitch-changing cylinders (131), which are symmetrically arranged on the side of the multi-dividing device (12) away from the splitting device (11). Four fixing blocks (132) are symmetrically arranged between the two variable pitch cylinders (131); Two sliding rods (133) are provided between the two fixed blocks (132), and the sliding rods (133) are perpendicular to the moving direction of the variable pitch cylinder (131). Multiple placement plates (134) are slidably mounted on two sliding rods (133), and a return spring is provided between two adjacent placement plates (134). Multiple pitch bars (135) are symmetrically arranged on the output shaft of the pitch cylinder (131) and are inserted into the gap between two adjacent placement plates (134).

3. The automated assembly line for switching power supplies with anti-pressure loss function according to claim 1, characterized in that: The circulating transfer unit (2) includes an annular guide rail (21), which is located on one side of the plate-separating unit (1), and the assembly unit (5) and the detection unit (6) are located above the annular guide rail (21). Multiple transfer components (22) are equidistantly and slidably disposed on the annular guide rail (21).

4. The automated assembly line for switching power supplies with anti-pressure loss function according to claim 1, characterized in that: The assembly unit (5) includes a first assembly device (51), which can realize the placement of PCBA board in the housing; A dispensing device (52) is provided, which can dispense adhesive onto the housing. The second assembly device (53) can assemble the cover and the shell.

5. The automated assembly line for switching power supplies with anti-pressure loss function according to claim 4, characterized in that: The second assembly device (53) includes an assembly frame (531), which is located between the shell cover feeding unit (4) and the circulating transfer unit (2); A movable component (532) is disposed on top of the assembly frame (531); A lifting assembly (533) is located at the bottom of the moving assembly (532); A gripping component (534) is located at the bottom of the lifting component (533).

6. The automated assembly line for switching power supplies with anti-pressure loss function according to claim 5, characterized in that: The gripping component (534) includes a gripping plate (5341), which is disposed at the bottom of the lifting component (533); Multiple lifting slots (5342) are arranged in a matrix at the bottom of the gripping plate (5341); Piston (5343), which is slidably and sealed within the lifting groove (5342); A gripping suction cup (5344) is located at the bottom of the piston (5343); Sensor (5345), the sensor (5345) is disposed on the inner top wall of the lifting groove (5342); Ventilation pipe (5346) is connected to the side wall of the lifting groove (5342).

7. The automated assembly line for switching power supplies with anti-pressure loss function according to claim 5, characterized in that: The dispensing device (52) includes a dispensing frame (521), which is mounted across the circulating transfer unit (2); An obstacle avoidance cylinder (522) is mounted on the dispensing frame (521); A displacement assembly (523) is connected to the output shaft of the avoidance cylinder (522); Multiple dispensing components (524) are rectangularly arranged on the displacement assembly (523).

8. The automated assembly line for switching power supplies with anti-pressure loss function according to claim 5, characterized in that: The detection unit (6) includes a first detection device (61), which is located between the first assembly device (51) and the dispensing device (52). A dispensing detection device (62) is provided between the dispensing device (52) and the second assembly device (53); The second detection device (63) is located on the side of the second assembly device (53) away from the dispensing detection device (62).

9. The automated assembly line for switching power supplies with anti-pressure loss function according to claim 8, characterized in that: Both the first detection device (61) and the second detection device (63) include a detection frame (611), which is straddling the circulating transfer unit (2); A movable structure (612) is disposed on top of the detection frame (611); Two first displacement sensors (613) are disposed on one side of the moving structure (612); Two second displacement sensors (614) are disposed on one side of the moving structure (612), and the first displacement sensor (613) is disposed between two adjacent second displacement sensors (614), and the first displacement sensor (613) protrudes from the second displacement sensor (614).

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