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

Abstract

The invention discloses a switching power supply automatic assembly production line with a pressure loss prevention function, and relates to the technical field of switching power supply production, the switching power supply automatic assembly production line comprises a plate dividing unit, a circulating transfer unit arranged on one side of the plate dividing unit, a shell feeding unit arranged at one end of the circulating transfer unit, and a shell cover feeding unit arranged at the other end of the circulating transfer unit; the assembly unit can achieve assembly of PCBA boards, shell covers and shells, the detection unit is arranged above the circulation transfer unit and can detect the assembly states of the PCBA boards, the shell covers and the shells, and the transfer manipulator can transfer the shells on the PCBA board shell feeding unit on the board dividing unit and the shell covers on the shell cover feeding unit to the circulation transfer unit. Through the design of a pressure loss prevention structure and multi-station real-time detection linkage, the problems of high pressure loss rate and detection lag in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch power supply production, in particular to a switch power supply automatic assembly production line with a pressure damage prevention function. BACKGROUND

[0002] A switch power supply is an electronic component with a circuit board in a fixed shell. Traditional switch power supply assembly is mostly carried out by manual or semi-automatic production lines. When manually assembling, the cooperation of the PCBA board (a printed circuit board that has completed component assembly) with the shell and the shell cover with the shell depends on the experience of the operator, and improper pressure control can easily cause damage to the components of the PCBA board, especially causing the buckling of the plastic shell and the deformation of the metal shell.

[0003] Existing production lines mostly carry out sampling inspection in the final link, which cannot detect the assembly status of each process in real time, resulting in defective products flowing into subsequent processes and material waste. SUMMARY

[0004] The purpose of the present application is to provide a switch power supply automatic assembly production line with a pressure damage prevention function, which can solve the problems of high pressure damage rate and detection lag in the prior art through pressure damage prevention structure design and multi-station real-time detection linkage.

[0005] The above-mentioned optimized structure of the present application is realized by the following technical scheme: a switch power supply automatic assembly production line with a pressure damage prevention function, comprising 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 assembly unit can realize the assembly of the PCBA board, shell cover and shell; A detection unit is arranged above the circulating transfer unit and can detect the assembly status of the PCBA board, shell cover and shell; A plurality of transfer manipulators 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.

[0006] In some embodiments, the board separating unit comprises a separating device arranged on one side of the circulating transfer unit; A multiple separating device is arranged between the separating device and the circulating transfer unit; A variable distance device is arranged between the multiple separating device and the circulating transfer unit; A conveying device is arranged on one side of the circulating transfer unit and can reciprocate between the splitting device, the multiple splitting device and the variable distance device.

[0007] In some embodiments, the variable distance device includes two variable distance cylinders, which are symmetrically arranged on the side of the multiple splitting device away from the splitting device. Four fixed blocks are symmetrically arranged between the two variable distance cylinders. Two sliding rods are arranged between the two fixed blocks and are perpendicular to the moving direction of the variable distance cylinders. Multiple placement plates are slidably arranged on the two sliding rods, and a return spring is arranged between adjacent two placement plates. Multiple variable distance strips are symmetrically arranged on the output shaft of the variable distance cylinder and are inserted into the gap between adjacent two placement plates.

[0008] In some embodiments, the circulating transfer unit includes a circular guide rail arranged on one side of the board splitting unit, and the assembly unit and the detection unit are arranged above the circular guide rail. Multiple transfer assemblies are arranged on the circular guide rail at equal intervals and are slidably arranged.

[0009] In some embodiments, the assembly unit includes a first assembly device that can realize the placement of the PCBA board in the shell. A dispensing device can realize the dispensing of the shell. A second assembly device can realize the assembly of the shell cover and the shell.

[0010] In some embodiments, the second assembly device includes an assembly rack arranged between the shell cover feeding unit and the circulating transfer unit. A moving assembly is arranged on the top of the assembly rack. A lifting assembly is arranged on the bottom of the moving assembly. A grabbing assembly is arranged on the bottom of the lifting assembly.

[0011] In some embodiments, the grabbing assembly includes a grabbing plate arranged on the bottom of the lifting assembly. Multiple lifting grooves are arranged in a matrix on the bottom of the grabbing plate. A piston is slidably and sealingly arranged in the lifting groove. A grabbing suction cup is arranged on the bottom of the piston. An inductor is arranged on the inner top wall of the lifting groove. A ventilation pipe is connected with the side wall of the lifting groove.

[0012] In some embodiments, the dispensing device comprises a dispensing frame arranged on the circulating transfer unit; An avoidance cylinder is arranged on the dispensing frame; A displacement assembly is connected with the output shaft of the avoidance cylinder; A plurality of dispensing elements are arranged on the displacement assembly in a rectangular shape.

[0013] In some embodiments, the detection unit comprises a first detection device arranged between the first assembly device and the dispensing device; A dispensing detection device is arranged between the dispensing device and the second assembly device; A second detection device is arranged on the side of the second assembly device away from the dispensing detection device.

[0014] In some embodiments, the first detection device and the second detection device each comprise a detection frame arranged on the circulating transfer unit; A moving structure is arranged on the top of the detection frame; Two first displacement sensors are arranged on one side of the moving structure; Two second displacement sensors are arranged on one side of the moving structure, and the first displacement sensor is arranged between the two adjacent second displacement sensors, and the first displacement sensor protrudes from the second displacement sensor.

[0015] The one or more technical solutions described above in the embodiments of the present application have at least the following technical effects or advantages: The present application can realize flexible pressing of the shell cover and the shell body through the cooperation of the piston and the inductor, thereby reducing the pressure loss rate of the shell. By arranging the detection unit at the corresponding position above the circulating transfer unit, the whole process from PCBA placement, dispensing to shell cover assembly can be monitored, and defective products can be removed in real time, thereby reducing material waste and cost. At the same time, through the variable distance device, the distance between multiple single boards after splitting can be adjusted to adapt to different distance requirements in subsequent stations. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0017] Figure 1 is a top view of the present application; Figure 2 is a structural view of the plate splitting unit of the present application; Figure 3 is a structural view of the distance changing device of the present application; Figure 4 is a structural view of the dispensing device of the present application; Figure 5 is a structural view of the second assembling device of the present application; Figure 6 is a sectional view of the grabbing assembly of the present application; Figure 7 is a structural view of the dispensing detection device of the present application; Figure 8 is a structural view of the first detection device of the present application.

[0018] In the figure: 1, plate splitting unit; 11, splitting device; 12, multiple splitting device; 13, distance changing device; 131, distance changing cylinder; 132, fixed block; 133, sliding rod; 134, placing plate; 135, distance changing strip; 14, carrying device; 2, circulating transfer unit; 21, annular guide rail; 22, transfer assembly; 3, shell feeding unit; 4, shell cover feeding unit; 5, assembling unit; 51, first assembling device; 52, dispensing device; 521, dispensing frame; 522, avoiding cylinder; 523, displacement assembly; 524, dispensing part; 53, second assembling device; 531, assembling frame; 532, moving assembly; 533, lifting assembly; 534, grabbing assembly; 5341, grabbing plate; 5342, lifting groove; 5343, piston; 5344, grabbing suction cup; 5345, inductor; 5346, air 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 DESCRIPTION

[0019] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations. The embodiments described below are presented by way of example to explain the present application, and are not intended to limit the present application.

[0020] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0021] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not intended to indicate or imply relative importance or a number of indicated technical features. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0022] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] Reference Figures 1-8The application discloses a switch power supply automatic assembly production line with a pressure loss prevention function, which comprises a board splitting unit 1, a circulating transfer unit 2, a shell feeding unit 3, a shell cover feeding unit 4, an assembly unit 5, a detection unit 6, and a plurality of transfer manipulators. The board splitting unit 1 can split an integral PCBA board into single workpieces, facilitating the assembly of the single board and the shell. The circulating transfer unit 2 is arranged on one side of the board splitting unit 1 and can realize the continuous circulation of the workpieces between processes, facilitating the workpieces to pass through each process and realizing the assembly of the switch power supply. The shell feeding unit 3 is arranged at one end of the circulating transfer unit 2 and can realize the automatic feeding of the shell. The shell cover feeding unit 4 is arranged at the other end of the circulating transfer unit 2 and can realize the automatic feeding of the shell cover. The shell feeding unit 3 and the shell cover feeding unit 4 can both adopt a vibrating disc + linear feeder structure. A blowing device can be arranged in the vibrating disc to blow the shell and the shell cover on the vibrating disc, so as to identify the front and back surfaces of the shell and the shell cover, to ensure the consistency of the shell and shell cover conveying, and to facilitate subsequent operations. The assembly unit 5 can realize the automatic assembly of the PCBA board, the shell and the shell cover. The detection unit 6 is arranged above the circulating transfer unit 2 and can detect the assembly state of the PCBA board, the shell cover and the shell, to realize real-time detection in the whole process. The transfer manipulators can transfer the PCBA board on the board splitting unit 1, the shell on the shell feeding unit 3 and the shell cover on the shell cover feeding unit 4 to the circulating transfer unit 2. The transfer manipulators can adopt SCARA robots, the ends of which are equipped with quick-change clamps compatible with the PCBA board, the shell and the shell cover, and the material transfer is realized through visual positioning.

[0024] In some embodiments, the board splitting unit 1 comprises a splitting device 11, a multiple splitting device 12, a distance changing device 13 and a carrying device 14. The splitting device 11 is fixed on one side of the circulating transfer unit 2 and can split an integral PCBA board into two half boards along a middle pre-splitting line. Specifically, a thin plate is pressed on the pre-splitting line of the integral board, and the two sides of the integral board are rotated upward to form a structure similar to a board breaking structure, so as to realize the symmetrical splitting of the integral board. The multiple splitting device 12 is arranged between the splitting device 11 and the circulating transfer unit 2 through a guide rail and can further split the half board into single boards. The multiple splitting device 12 can adopt staggered stamping to divide the half board into multiple single boards. The distance changing device 13 is installed on one side of the multiple splitting device 12 close to the circulating transfer unit 2 and is used for adjusting the distance between the single boards after splitting, so as to adapt to the subsequent transfer requirements and improve the transfer effect and efficiency. The carrying device 14 can be a combination of a horizontal moving air cylinder, a vertical moving air cylinder and a suction disc assembly. The horizontal moving air cylinder is used for realizing the reciprocating movement of the carrying device 14 between the splitting device 11, the multiple splitting device 12 and the distance changing device 13. The vertical moving air cylinder is used for realizing the change of the carrying device 14 in the height direction. The suction disc assembly connected with an external air source generates negative pressure to realize the adsorption and fixation of the half board and the single board, so as to realize the transfer of the PCBA board between the splitting device 11, the multiple splitting device 12 and the distance changing device 13.

[0025] In some embodiments, the pitch changing device 13 includes two pitch changing cylinders 131, four fixed blocks 132, two sliding rods 133, multiple placement plates 134 and multiple pitch changing strips 135. The two pitch changing cylinders 131 can be double-rod cylinders, symmetrically installed on the base on the side of the splitting device 12 away from the splitting device 11, with the output shafts oppositely arranged; the four fixed blocks 132 can be L-shaped metal blocks, symmetrically fixed on the base in pairs, between the two pitch changing cylinders 131; the two sliding rods 133 can be chrome-plated light shafts, horizontally erected between the two groups of fixed blocks 132, with the shaft line perpendicular to the direction of the output shaft of the pitch changing cylinder 131; the multiple placement plates 134 can be rectangular plastic plates, with a placement groove on the top matching the single plate, and a linear bearing on the bottom of the bottom part, with adjacent placement plates 134 connected by a return spring; the multiple pitch changing strips 135 can be wedge-shaped metal sheets, with an angle of 30°, symmetrically fixed on the output shaft end of the pitch changing cylinder 131, and can be inserted into the gap between adjacent placement plates 134. When the output shaft of the pitch changing cylinder 131 is extended, the pitch changing strip 135 pushes the placement plate 134 to slide along the sliding rod 133, increasing the distance between the plates; when the output shaft is retracted, the return spring pulls the placement plate to reset, achieving the adjustment of the distance.

[0026] In some embodiments, the circulating transfer unit 2 includes a ring guide rail 21 and multiple transfer assemblies 22. The ring guide rail 21 can be a closed double-track structure, which can be equipped with a servo-driven synchronous belt; the multiple transfer assemblies 22 are installed at equal intervals on the sliding block of the ring guide rail 21, and each transfer assembly 22 can include a positioning jig (with an adjustable stopper), a piezoelectric sensor, and a jig surface can be pasted with a silica gel non-slip pad (2mm thick), which can stably place the shell or semi-finished product, and move with the ring guide rail 21 to realize continuous flow transfer of multiple stations. The circulating movement of multiple transfer assemblies 22 on the ring guide rail 21 is a prior art, which will not be described 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 arranged between the shell feeding unit 3 and the ring guide rail 21, and the first assembly device 51 can be a four-axis SCARA robot, which can be arranged above the first station of the circulating transfer unit 2, and the end can be equipped with a flexible gripper, which can accurately place the single plate on the pitch changing device 13 into the shell of the transfer assembly 22, realizing the installation between the single plate and the shell, and the gripper can be equipped with a built-in pressure sensor, which can automatically alarm when the clamping force exceeds the threshold value, avoiding the deformation of the PCBA plate. The dispensing device 52 can be arranged above the second station of the circulating transfer unit 2, which is used for coating sealant on the edge of the shell to realize the dispensing of the shell, and the second assembly device 53 can be installed above the third station of the circulating transfer unit 2, which can grab the shell cover of the shell cover feeding unit 4 and buckle with the glued shell, thereby realizing the assembly of the shell cover and the shell.

[0028] In some embodiments, the second assembling device 53 comprises an assembling frame 531, a moving assembly 532, a lifting assembly 533 and a grabbing assembly 534. The assembling frame 531 can be an aluminum profile frame, which is horizontally arranged between the cover feeding unit 4 and the circulating transfer unit 2. The moving assembly 532 can be a linear motor module, which is fixed to the top beam of the assembling frame 531. The lifting assembly 533 is installed at the bottom of the slider of the moving assembly 532. The grabbing assembly 534 is fixed to the end of the output shaft of the lifting assembly 533, which is used for grabbing and transferring the cover and can adapt to covers of different sizes.

[0029] In some embodiments, the grabbing assembly 534 comprises a grabbing plate 5341, a plurality of lifting grooves 5342, a piston 5343, a grabbing suction cup 5344, a sensor 5345 and a vent pipe 5346. The grabbing plate 5341 can be a rectangular metal plate, which is fixed to the bottom of the lifting assembly 533. The plurality of lifting grooves 5342 are arranged in a matrix at the bottom of the grabbing plate 5341. The piston 5343 can be a T-shaped rubber plug, which is sealingly and slidingly fitted with the inner wall of the lifting groove 5342. The grabbing suction cup 5344 can be made of silica gel, which is fixed to the bottom of the piston 5343 by screw connection. The sensor 5345 is a pressure sensor, which is installed at the inner top wall of the lifting groove 5342 and can detect the pressure intensity in the lifting groove 5342. The vent pipe 5346 can be a PU pipe, one end of which is connected with the side wall through hole of the lifting groove 5342, and the other end is connected with a pneumatic device. When the grabbing suction cup 5344 contacts the cover, the vacuum generator works to generate negative pressure to adsorb the cover. When the cover is pressed on the shell, the pneumatic device inflates into the lifting groove 5342, so that the air pressure in the lifting groove 5342 increases, thereby making the piston 5343 and the grabbing suction cup 5344 descend, so that the cover is pressed on the shell. The sensor 5345 senses the air pressure intensity in the lifting groove 5342 in real time. Due to the interaction of forces, the force of the piston 5343 subjected to the grabbing suction cup 5344 is the size of the air pressure in the lifting groove 5342, which is also the size of the pressure sensed by the sensor 5345, so as to realize real-time monitoring of the acting force between the cover and the shell. When the sensed value exceeds the set value, the grabbing is stopped to avoid damage to the cover and the shell.

[0030] In some embodiments, the dispensing device 52 comprises a dispensing frame 521, an avoidance cylinder 522, a displacement assembly 523, and a plurality of dispensing elements 524. The dispensing frame 521 can be a gantry frame, which is arranged above the circulating transfer unit 2; the avoidance cylinder 522 can be a single-rod cylinder, which is horizontally installed on the crossbeam of the dispensing frame 521; the displacement assembly 523 can be a transverse and longitudinal moving structure, which can drive the dispensing elements 524 to move transversely and longitudinally to realize the dispensing of the shell. The plurality of dispensing elements 524 are fixed on the displacement assembly 523 in a rectangular distribution, which can be needle tube type dispensing valves. Each dispensing element is equipped with an independent heating sleeve and a flow sensor to adapt to different viscosity glues. The plurality of dispensing elements 524 are distributed corresponding to the positions of the shell to realize one-to-one correspondence between the shell and the dispensing elements 524, thereby improving the dispensing efficiency.

[0031] In some embodiments, the detection unit 6 comprises a first detection device 61, a dispensing detection device 62, and a second detection device 63. The first detection device 61 can be installed above the annular guide rail 21 between the first assembly device 51 and the dispensing device 52 through a support, which can detect the placement position of the single board in the shell. The dispensing detection device 62 can be a visual detection camera with a resolution of 20 million pixels, which is arranged between the dispensing device 52 and the second assembly device 53. The dispensing detection device 62 can identify whether the dispensing track is continuous and whether the glue amount meets the standard. The unqualified products are marked and removed by the subsequent removing device. The second detection device 63 is installed on the gantry away from the dispensing detection device 62 on the side of the second assembly device 53, which can detect the buckling quality of the shell cover and the shell. The unqualified products can be removed from the annular guide rail 21 by the blowing device.

[0032] In some embodiments, the first detection device 61 and the second detection device 63 each include a detection frame 611, a moving structure 612, two first displacement sensors 613, and two second displacement sensors 614. The detection frame 611 can be an aluminum profile frame, which is arranged across the annular guide rail 21; the moving structure 612 can be a driving air cylinder, which is installed on the top of the detection frame 611; the two first displacement sensors 613 can be infrared displacement sensors, which are fixed on one side of the moving structure 612 through a support, and can detect the height between a corner of the top surface of the shell and the first displacement sensor 613; the two second displacement sensors 614 can be infrared displacement sensors, which are symmetrically arranged on the two sides of the first displacement sensor 613, and can detect the height between opposite corners of the top surface of the shell and the first displacement sensor 613; the detection end of the first displacement sensor 613 can protrude more than the detection end of the second displacement sensor 614. The height between the two opposite corners of the shell is detected by the first displacement sensor 613 and the second displacement sensor 614 of the first detection device 61, so as to determine whether there is a single board in the shell, and the flatness of the single board placed in the shell can be determined. NG products are automatically removed. The height between the two opposite corners of the shell is detected by the first displacement sensor 613 and the second displacement sensor 614 of the second detection device 63, so as to determine whether the surface of the shell cover is flat and whether it is installed in place.

[0033] In some embodiments, the production line can be realized through a PLC control system: the beat of the plate splitting unit 1 is matched with the work 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 through 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 whole board PCBA can be sent to the splitting device 11 of the plate splitting unit 1 by the manipulator, and the whole board is symmetrically divided into two half boards along the pre-splitting line through the "board splitting" action (which can avoid stress damage caused by traditional cutting). The carrying device 14 is started, the horizontal moving cylinder drives the suction cup assembly to the upper side of the splitting device 11, the vertical moving cylinder is lowered to make the suction cup contact the half board, the external air source generates negative pressure through the suction cup to adsorb the half board, and then the horizontal movement is to the feeding table of the multi-splitting device 12. The multi-splitting device 12 adopts a staggered stamping structure, and the half board is equally divided into multiple single boards through the stamping pressure. After the splitting is completed, the carrying device 14 moves the single board to the placement plate 134 of the distance changing device 13 (the positioning groove on the top of the placement plate is matched with the edge of the single board to prevent deviation).

[0035] The distance adjusting device 13 adjusts the distance according to the subsequent transfer requirement: the output shaft of the two distance adjusting cylinders 131 extends, pushes the wedge-shaped distance adjusting bar 135 to insert into the gap of the adjacent placement plate 134, the placement plate slides along the sliding rod 133 and compresses the reset spring, so that the distance between the plates increases from the initial 30 mm to 60 mm (adapted to the jig distance of the circulating transfer unit 2); after the adjustment is completed, the distance adjusting cylinder 131 resets, and the reset spring pulls the placement plate to keep the stable distance, preparing for the next single board distance adjustment.

[0036] The shell feeding unit 3 arranges the shells through the vibration disc, the disc blows air to identify the front and back of the shell, the qualified shell is sent to the material taking position through the linear feeder, and the mechanical hand grabs and puts it into the transfer assembly 22 of the circulating transfer unit 2. After confirming that the placement is stable, the synchronous belt of the ring guide rail 21 drives the transfer assembly to flow to the next station.

[0037] The flexible gripper of the first assembly device 51 moves above the distance adjusting device 13, the opening angle of the gripper is adapted to the size of the single board, the gripper moves above the transfer assembly 22 after grabbing the single board, and the single board is put into the shell groove by vertical descent. The pressure sensor monitors the placement pressure in real time, and if the pressure is out of limit due to jamming, the action is immediately stopped and an alarm is given.

[0038] The shell with the single board moves to below the first detection device 61 with the transfer assembly 22, the first displacement sensor 613 and the second displacement sensor 614 detect the height difference of the two opposite angles of the shell, and if the height difference is out of limit (such as the PCBA is not placed or inclined), it is determined as an NG product and marked. The next group of shells are detected by moving the structure 612, and after the detection is completed, the transfer assembly 22 sends the shell with the single board to below the dispensing device 52, the displacement assembly 523 drives the dispensing part 524 to be positioned to the edge of the shell, and the dispensing operation on the shell is realized through the dispensing part 524. After the dispensing is completed, 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, judges the continuity of the glue line through image recognition, and marks the unqualified product which is removed by the subsequent air blowing device.

[0039] The shell cover of the shell cover feeding unit 4 is arranged, the moving assembly 532 of the second assembly device 53 drives the grabbing assembly 534 to the material taking position, the lifting assembly 533 descends to make the grabbing suction cup 5344 contact the shell cover, and the vacuum generator generates negative pressure to adsorb the shell cover. The grabbing plate 5341 moves above the shell, the lifting assembly 533 descends, when the shell cover contacts the shell, the piston 5343 is pressed to rise, the air pressure in the lifting groove 5342 rises, the sensor 5345 detects the pressure rise, the external pneumatic device starts, and the other is sent to the lifting groove 5342. When the sensor 5345 detects that the pressure reaches the set value, the external pneumatic device stops, and the flexible buckling is realized.

[0040] Figure 6 More specifically, with specific reference to the drawingsFigure 6 As shown, the gripping assembly 534 moves above the shell and descends, and after the shell cover preliminarily contacts the shell, the external pneumatic device is started to inject compressed air into the air pipe 5346 and the lifting groove 5342, and the increased air pressure pushes the piston 5343 and the gripping suction cup 5344 to steadily descend and exert pressure on the shell cover. Since the gas is compressible, the pressure is a flexible pressure. During the pressing process, the inductor 5345 monitors the air pressure value in the lifting groove 5342 in real time, and the air pressure value is proportional to the force applied to the shell cover. When the pressure value detected by the inductor 5345 reaches the preset qualified threshold value, the pneumatic device stops inflating, thereby completing the precise force control pressing, and effectively avoiding the pressure damage caused by excessive force.

[0041] The transfer assembly 22 continues to transfer to below the second detection device 63, the second detection device 63 detects the height difference of two opposite angles of the shell cover surface, and after confirmation of qualification, the finished product is transferred to the unloading conveyor; the unqualified product is removed from the production line by the rejection device at the end of the annular guide rail.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A switch power supply automatic assembly production line with a pressure loss prevention function, characterized in that: It comprises a board separating unit (1); ​ A circulating transfer unit (2) is arranged on one side of the board separating unit (1); A shell feeding unit (3) is arranged at one end of the circulating transfer unit (2); A shell cover feeding unit (4) is arranged at the other end of the circulating transfer unit (2); An assembly unit (5) can realize the assembly of PCBA board, shell cover and shell; A detection unit (6) is arranged above the circulating transfer unit (2) and can detect the assembly state of PCBA board, shell cover and shell; A plurality of transfer manipulators can transfer the PCBA board on the board separating unit (1), the shell on the shell feeding unit (3) and the shell cover on the shell cover feeding unit (4) to the circulating transfer unit (2).

2. The switch power supply automation assembly line with pressure loss prevention function according to claim 1, characterized in that: The board separating unit (1) comprises a separating device (11) arranged on one side of the circulating transfer unit (2); A multiple separating device (12) is arranged between the separating device (11) and the circulating transfer unit (2); A variable distance device (13) is arranged between the multiple separating device (12) and the circulating transfer unit (2); A carrying device (14) is arranged on one side of the circulating transfer unit (2) and can reciprocate between the separating device (11), the multiple separating device (12) and the variable distance device (13).

3. The switch power supply automation assembly line with pressure loss prevention function according to claim 2, characterized in that: The variable distance device (13) comprises two variable distance cylinders (131) symmetrically arranged on the side of the multiple separating device (12) away from the separating device (11); Four fixed blocks (132) are symmetrically arranged between the two variable distance cylinders (131); Two sliding rods (133) are arranged between the two fixed blocks (132), and the sliding rods (133) are arranged vertically to the moving direction of the variable distance cylinders (131); A plurality of placement plates (134) are slidably arranged on the two sliding rods (133), and a reset spring is arranged between adjacent two placement plates (134); A plurality of variable distance strips (135) are symmetrically arranged on the output shaft of the variable distance cylinder (131) and are inserted into the gap between adjacent two placement plates (134).

4. The switch power supply automation assembly line with pressure loss prevention function according to claim 1, characterized in that: The circulating transfer unit (2) comprises a ring guide rail (21) arranged on one side of the board separating unit (1), and the assembly unit (5) and the detection unit (6) are arranged above the ring guide rail (21); A plurality of transfer assemblies (22) are equally spaced and slidably arranged on the ring guide rail (21).

5. The switch power supply automation assembly line with pressure loss prevention function according to claim 1, characterized in that: The assembly unit (5) comprises a first assembly device (51) which can realize the placement of PCBA board in the shell. An adhesive dispensing device (52) is arranged to dispense adhesive on the shell; A second assembling device (53) is arranged to assemble the shell cover and the shell.

6. The switch power supply automation assembly line with pressure loss prevention function according to claim 5, characterized in that: The second assembling device (53) comprises an assembling frame (531) arranged between the shell cover feeding unit (4) and the circulating transfer unit (2); A moving assembly (532) is arranged on the top of the assembling frame (531); A lifting assembly (533) is arranged on the bottom of the moving assembly (532); A grabbing assembly (534) is arranged on the bottom of the lifting assembly (533).

7. The switch power supply automation assembly line with pressure loss prevention function according to claim 6, characterized in that: The grabbing assembly (534) comprises a grabbing plate (5341) arranged on the bottom of the lifting assembly (533); A plurality of lifting grooves (5342) are arranged in a matrix on the bottom of the grabbing plate (5341); A piston (5343) is slidably and sealingly arranged in the lifting groove (5342); A grabbing suction cup (5344) is arranged on the bottom of the piston (5343); An inductor (5345) is arranged on the inner top wall of the lifting groove (5342); An air pipe (5346) is connected with the side wall of the lifting groove (5342).

8. The switch power supply automation assembly line with pressure loss prevention function according to claim 6, characterized in that: The adhesive dispensing device (52) comprises an adhesive dispensing frame (521) arranged across the circulating transfer unit (2); An avoidance air cylinder (522) is arranged on the adhesive dispensing frame (521); A displacement assembly (523) is connected with the output shaft of the avoidance air cylinder (522); A plurality of adhesive dispensing elements (524) are arranged in a rectangle on the displacement assembly (523).

9. The switch power supply automation assembly line with pressure loss prevention function according to claim 6, characterized in that: The detection unit (6) comprises a first detection device (61) arranged between the first assembling device (51) and the adhesive dispensing device (52); An adhesive dispensing detection device (62) is arranged between the adhesive dispensing device (52) and the second assembling device (53); A second detection device (63) is arranged on the side of the second assembling device (53) away from the adhesive dispensing detection device (62).

10. The switch power supply automation assembly line with pressure loss prevention function according to claim 9, characterized in that: The first detection device (61) and the second detection device (63) both comprise a detection frame (611) arranged across the circulating transfer unit (2); A moving structure (612) is arranged on the top of the detection frame (611); Two first displacement sensors (613) are arranged on one side of the moving structure (612); Two second displacement sensors (614), two second displacement sensors (614) are arranged on one side of the moving structure (612), and the first displacement sensor (613) is arranged between two adjacent second displacement sensors (614), and the first displacement sensor (613) protrudes from the second displacement sensor (614).

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