A new fully automatic intelligent rework station

Abstract

The utility model discloses a new fully automatic intelligent rework station, comprising: a frame, a mobile module arranged on the frame, a PCB clamping component, a PCB heating component, an outer camera component, a feeding and scraping solder paste component, and a detinning head component, a positioning camera component, and a welding head component arranged on the mobile module; the PCB heating component is arranged below the PCB clamping component, and is used for preheating a PCB board clamped on the PCB clamping component; the PCB heating component comprises a frame, a temperature zone component arranged in the frame, a mobile component spanning the frame, a fixed-point heating component arranged on the mobile component and above the temperature zone component, and a lifting component; the lifting component is arranged below the frame, and is used for driving the temperature zone component in the frame to be lifted and lowered; the mobile component is used for driving the fixed-point heating component to move in the X-axis and Y-axis directions; the mobile module is used for driving the detinning head component, the positioning camera component, and the welding head component to move in the X-axis and Y-axis directions.

Description

Technical Field

[0001] The utility model relates to the technical field of BGA chip rework, in particular to a new full-automatic intelligent rework station. Background Art

[0002] With the rapid development of electronic technology in recent years, the size differentiation, high density, high frequency and high integration of electronic product assembly have put higher and higher requirements on the quality of PCB board and electronic chip installation rework. The increasingly strong demand has led to the rapid development of PCB rework. At the same time, higher requirements are also put forward for the intelligence, precision and integration of PCB rework equipment, which is no longer just the traditional auxiliary disassembly and placement.

[0003] Therefore, existing rework technologies face the following challenges:

[0004] The degree of automation in the rework process is not high, and it relies on manual operation, which has low efficiency. The rework accuracy is insufficient, making it difficult to cope with the high-density and high-precision rework needs of electronic components. The equipment has a single function and cannot adapt to a variety of rework scenarios, such as automatic disassembly, tin removal, mounting and welding. The lack of an intelligent visual system makes it difficult to achieve precise alignment and welding quality control. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a new fully automatic intelligent rework station.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] The utility model provides a new fully automatic intelligent rework station, including: a frame, a mobile module arranged on the frame, a PCB clamping assembly, a PCB heating assembly, an outer camera assembly, a feeding and scraping solder paste assembly, and a detinning head assembly, a positioning camera assembly, and a welding head assembly arranged on the mobile module;

[0008] The PCB heating assembly is placed below the PCB clamping assembly and is used to preheat the PCB board clamped on the PCB clamping assembly;

[0009] The PCB heating assembly includes a frame, a temperature zone assembly arranged in the frame, a moving assembly spanning the frame, a fixed-point heating assembly arranged on the moving assembly and placed above the temperature zone assembly, and a lifting assembly;

[0010] The lifting assembly is arranged below the frame and is used to drive the temperature zone assembly in the frame to move up and down;

[0011] The moving component is used to drive the fixed-point heating component to move in the X-axis and Y-axis directions;

[0012] The mobile module is used to drive the desoldering head assembly, the positioning camera assembly, and the welding head assembly to move on the X-axis and the Y-axis;

[0013] The feeding and scraping solder paste assembly is arranged beside the PCB clamping assembly; and the outer camera assembly is placed above the PCB clamping assembly.

[0014] Preferably, the rack is also provided with an electric box, a display, a keyboard and mouse operating assembly, a three-color lamp, and a smoke extractor fan; the electric box is arranged at the lower part of the rack, the display and the keyboard and mouse operating assembly are arranged on the door side of the rack, and the three-color lamp and the smoke extractor fan are both arranged on the top of the rack.

[0015] Preferably, the moving module includes a gantry bracket, a Y-axis linear module and an X-axis linear module arranged on the gantry bracket, and a cross-flow fan installed under the gantry bracket; the X-axis linear module is arranged on the Y-axis linear module and can move along the Y-axis.

[0016] Preferably, the output end of the X-axis linear module is further provided with a sliding plate, on which the detinning head assembly, the positioning camera assembly and the welding head assembly are mounted.

[0017] Preferably, the welding head assembly includes a mounting seat, an R-axis motor and a suction rod shaft lifting motor arranged on the mounting seat, a suction rod spline shaft connected to the output end of the R-axis motor, a lower blowing seat, a heater, and a hot air pipe arranged in sequence below the mounting seat; one end of the suction rod spline shaft passes through the hot air pipe, the heater, the lower blowing seat, and the mounting seat in sequence and is connected to the output end of the suction rod shaft lifting motor.

[0018] Preferably, the detinning head assembly includes a Z-axis linear module, a detinning base plate arranged on the Z-axis linear module, a cylinder and a sliding rail arranged on the detinning base plate, a weighing sensor arranged on the detinning base plate, a detinning sliding seat arranged on the sliding rail and connected to the output end of the cylinder, a laser displacement sensor arranged on the detinning sliding seat, a detinning fixed cavity seat placed at the bottom of the detinning sliding seat, a heating tube arranged on the detinning sliding seat and one end of which is placed in the detinning fixed cavity seat, an air outlet nozzle arranged at the bottom of the detinning fixed cavity seat, a vacuum suction nozzle inserted in the air outlet nozzle, and a tin slag pot arranged on one side of the detinning fixed cavity seat and connected to the vacuum suction nozzle.

[0019] Preferably, the PCB clamping assembly includes front and rear stretching guide rails, a fixed plate arranged on the front and rear stretching guide rails, two movable guide rails arranged side by side installed on the fixed plate, a sliding guide rail spanning the two movable guide rails, a plurality of PCB board clamping jigs arranged on the sliding guide rails, a handle and an optical fiber sensor installed at the front end of the fixed plate, and a stop cylinder for limiting the movement of the fixed plate on the front and rear stretching guide rails.

[0020] Preferably, the feeding and scraping solder paste assembly includes a lifting cylinder, a mounting cabinet arranged at the output end of the lifting cylinder, a sliding track arranged in the mounting cabinet, a sliding mounting plate slidably connected to the sliding track, a screw motor installed on the mounting cabinet and connected to the sliding mounting plate, a lifting cylinder 2 installed on the sliding mounting plate, a scraper arranged at the output end of the lifting cylinder 2, a bearing seat arranged at one end of the top of the mounting cabinet, and a feeding tray, a waste tray and a tin slag collector arranged at one end of the top of the mounting cabinet; a bearing groove is provided on the bearing seat; a waist-shaped sliding hole is also provided on the top of the mounting cabinet, and the waist-shaped sliding holes are placed on both sides of the bearing seat, and the scraper passes through the waist-shaped sliding hole and spans the bearing seat.

[0021] Preferably, the external camera assembly includes an external industrial camera, a universal hose with one end arranged on the external industrial camera, a locking valve installed on the universal hose, a fixed block clamped on the external industrial camera, a movable block movably connected to the fixed block, and an external camera light source installed on the movable block.

[0022] Preferably, the moving component of the PCB heating component includes a Y-axis translation module and an X-axis translation module arranged on the Y-axis translation module; the X-axis translation module is provided with the fixed-point heating component; the fixed-point heating component includes a heating seat, and a plurality of ventilation holes are opened on the heating seat; the lifting component includes a fixed seat, a lifting motor, a reducer arranged at the output end of the lifting motor, a screw rod arranged at the output end of the reducer, a sliding track 2 arranged on both sides of the fixed seat, and a lifting plate arranged on the screw rod and slidably connected to the sliding track 2.

[0023] The technical solution of the utility model has the following beneficial effects:

[0024] Based on the traditional PCB rework station, the utility model integrates tin removal, mounting fool-proofing, solder paste DIPPING and self-cleaning components, which is suitable for the rework of various SMD devices, and can realize automatic disassembly, tin removal, nozzle self-cleaning, solder paste / flux dipping, alignment, mounting and welding functions. In terms of vision, it can automatically identify component solder joints and PCB solder joints, and automatically perform related rework actions; the same type of PCB board only needs the first one to be aligned, and the subsequent same PCB boards can achieve "one-click rework" to ensure the consistency of rework quality, and can easily cope with various high-end precision electronic products.

[0025] The utility model adopts high-precision visual alignment: it integrates a large-viewing field 25-megapixel resolution high-definition industrial vision camera to improve imaging clarity and achieve accurate automatic alignment. The high-definition industrial vision camera is used to prevent welding mistakes and avoid reverse BGA welding or electrode welding errors. The detinning nozzle has a self-cleaning function to effectively prevent nozzle clogging and reduce the need for manual cleaning. Self-cleaning function: The detinning nozzle has a self-cleaning function to effectively prevent nozzle clogging and reduce the need for manual cleaning. Before welding, the utility model will use a visual industrial camera to compare the components and PCB on the tray to prevent the direction and electrodes from being mistaken. The utility model adopts upper and lower hot air heating supplemented by preheating temperature zones to make the tin balls on the components melted, which is convenient for subsequent welding, disassembly and detinning, and effectively improves the heating efficiency of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the mobile module of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the PCB heating component of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the lifting component of the utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the PCB board clamping assembly of the utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the welding head assembly of the utility model;

[0033] Figure 8 This is a schematic diagram of the structure of the detinning head of the utility model;

[0034] Fig. 9 This is a schematic diagram of the structure of the feeding and scraping solder paste component of the utility model;

[0035] Fig.10 This is a schematic diagram of the structure of the outer camera assembly of the utility model;

[0036] In the figure: rack 1, electrical box 2, display 3, keyboard and mouse operating components, three-color light 4, smoke extraction fan 5;

[0037] PCB heating component 400, X-axis translation module 18, Y-axis translation module 19, fixed seat 254, lifting motor 250, reducer 26, screw rod 251, sliding track 252, lifting plate 253, PCB board 11, fixed point heating component 17, lifting component 25, heating brick 20;

[0038] Mobile module 100, Y-axis linear module 15, X-axis linear module 16;

[0039] Welding head assembly 8, Z-axis linear module 34, R-axis motor 36 and suction rod shaft lifting motor 37, suction rod spline shaft 35, lower blowing seat 39, heater 38, hot air pipe 40;

[0040] Detinning head assembly 7, Z-axis linear module 111, detinning base plate 112, cylinder 40 and sliding track 113, weighing sensor 39, detinning sliding seat 114, laser displacement sensor 39, detinning fixed cavity seat 115, heating tube 41, air outlet nozzle 117, tin slag tank 116;

[0041] PCB clamping assembly 300, front and rear stretching guide rails 31, moving guide rails 301, sliding guide rails 302, several PCB board clamping fixtures 30, handles 33 and optical fiber sensors, stop cylinders 32;

[0042] Feeding and scraping solder paste assembly 200, lifting cylinder 27, mounting cabinet 280, sliding track 281, lifting cylinder 282, scraper 283, bearing seat 28, feeding tray 29, waste tray 290, tin slag collector 291, bearing groove 284, waist-shaped sliding hole 285;

[0043] External camera assembly 500 , external industrial camera 45 , universal hose 46 , locking valve 461 , fixed block 451 , movable block 452 , external camera light source 44 . DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] Reference Figures 1 to 10 The utility model provides a new fully automatic intelligent rework station, including: a frame 1, a mobile module 100 arranged on the frame, a PCB clamping assembly 300, a PCB heating assembly 400, an outer camera assembly 500, a feeding and scraping solder paste assembly 200, and a detinning head assembly 7, a positioning camera assembly, and a welding head assembly 8 arranged on the mobile module 100;

[0050] The PCB clamping assembly 300 is used to fix and clamp the PCB board 11 for rework operation.

[0051] The PCB heating assembly 400 is placed below the PCB clamping assembly 300 and is used to preheat the PCB board 11 clamped on the PCB clamping assembly 300;

[0052] The PCB heating assembly 400 includes a frame, temperature zone assemblies arranged in the frame, a moving assembly across the frame, a fixed-point heating assembly 17 arranged on the moving assembly and placed above the temperature zone assemblies, and a lifting assembly 25; a heating brick 20 is placed in each temperature zone assembly; the lifting assembly 25 is arranged under the frame and is used to drive the temperature zone assemblies in the frame to move up and down;

[0053] The moving component is used to drive the fixed-point heating component 17 to move in the X-axis and Y-axis directions;

[0054] The mobile module is used to drive the desoldering head assembly 7, the positioning camera assembly, and the welding head assembly 8 to move on the X-axis and the Y-axis;

[0055] The feeding and scraping solder paste component 200 is arranged beside the PCB clamping component 300 and is used to scrape the solder paste flat;

[0056] The outer camera assembly 500 is placed above the PCB clamping assembly 300 .

[0057] The positioning camera assembly is composed of a large-viewing-field, high-resolution visual industrial camera and a prism, and is used for photo positioning and anti-mistake to achieve automatic alignment.

[0058] Furthermore, the rack 1 is also provided with an electrical box 2, a display 3, a keyboard and mouse operating component, a tricolor light 4, and a smoke extractor fan 5; the electrical box 2 is arranged at the lower part of the rack 1, the display 3 and the keyboard and mouse operating component are arranged on the side of the door of the rack 1, and the tricolor light 4 and the smoke extractor fan 5 are both arranged on the top of the rack 1, wherein the electrical box 2 is responsible for providing a stable and safe power supply for the entire rework station and protecting the circuit system from risks such as overload and short circuit. The display 3: as part of the user interface, it displays information such as equipment status, operation menu, program execution status, etc., so that the operator can monitor and control the working status of the rework station. The tricolor light 4: usually used as a status indicator light, through the changes of red, green and yellow colors to indicate different working states or warning information of the equipment, such as green for normal operation, red for possible errors or warnings, and yellow for standby or waiting for user input. The smoke extractor fan 5: used to remove harmful gases and fumes generated during welding or rework, improve the working environment, protect the health of operators, and prevent pollutants from damaging the equipment.

[0059] Furthermore, the moving component of the PCB heating component 400 includes a Y-axis translation module 19, an X-axis translation module 18 arranged on the Y-axis translation module 19; the X-axis translation module 18 is provided with the fixed-point heating component 17; the fixed-point heating component 17 includes a heating seat 17, and a plurality of ventilation holes are opened on the heating seat 17; the lifting component 25 includes a fixed seat 254, a lifting motor 250, a reducer 26 arranged at the output end of the lifting motor 250, a screw rod 251 arranged at the output end of the reducer 26, and a fixed-point heating component 17; The sliding rails 252 on both sides of the fixed seat 254, and the lifting plate 253 arranged on the screw 251 and slidably connected to the sliding rails 252, the Y-axis translation module 19 includes a servo motor and a conveyor belt, the X-axis translation module 18 includes a servo motor and a screw module, and the heating seat 17 is installed on the screw module. The specific structure of the PCB heating assembly 400 in this embodiment can refer to Chinese Patent 202022922497.6 A new type of rapid visual alignment and repair equipment, the disclosed lower preheating mechanism, again not cumbersome. The positioning camera assembly disclosed in this application can refer to Chinese Patent 202022922497.6 A new type of rapid visual alignment and repair equipment, which has been applied for authorization in this application, and the disclosed visual positioning mechanism, again not cumbersome.

[0060] Furthermore, the mobile module 100 includes a gantry bracket, a Y-axis linear module 15 and an X-axis linear module 16 arranged on the gantry bracket, and a cross-flow fan installed under the gantry bracket; the X-axis linear module 16 is arranged on the Y-axis linear module 15 and can move along the Y-axis. The output end of the X-axis linear module 16 is also provided with a sliding plate, on which the detinning head assembly 7, the positioning camera assembly, and the welding head assembly 8 are installed. The mobile module 100 is used to drive the detinning head assembly 7, the positioning camera assembly, and the welding head assembly 8 to move on the X-axis and the Y-axis to the required position.

[0061] Furthermore, the welding head assembly 8 includes a welding head Z-axis linear module 34, a mounting seat at the output end of the Z-axis linear module, an R-axis motor 36 and a suction rod shaft lifting motor 37 arranged on the mounting seat, a suction rod spline shaft 35 connected to the output end of the R-axis motor 36, and a lower blowing seat 39, a heater 38, and a hot air pipe 40 arranged in sequence below the mounting seat; one end of the suction rod spline shaft 35 passes through the hot air pipe 40, the heater 38, the lower blowing seat 39, and the mounting seat in sequence and is connected to the output end of the suction rod shaft lifting motor 37; the main function is head heating, suction rod lifting and rotating to pick up materials and mount; the specific details and principles can refer to the heating and transferring device 4 disclosed in the Chinese patent 202321188657.6, a new desktop semi-automatic BGA chip repair equipment that the applicant has applied for, and the applicant will not repeat it again.

[0062] Furthermore, the detinning head assembly 7 includes a Z-axis linear module 111, a detinning base plate 112 arranged on the Z-axis linear module 111, a cylinder 40 and a sliding rail 113 arranged on the detinning base plate 112, a weighing sensor 39 arranged on the detinning base plate 11, a detinning sliding seat 114 arranged on the sliding rail 113 and connected to the output end of the cylinder 40, a laser displacement sensor 39 arranged on the detinning sliding seat 114, a detinning fixed cavity seat 115 placed at the lower part of the detinning sliding seat 114, a heating tube 41 arranged on the detinning sliding seat 114 and one end of which is placed in the detinning fixed cavity seat 115, an air outlet nozzle 117 arranged at the bottom of the detinning fixed cavity seat 115, and a vacuum suction nozzle 117 inserted in the air outlet nozzle 117, A tin slag pot 116 is arranged on one side of the tin removal fixed cavity seat 115 and is connected to the vacuum suction nozzle, wherein the Z-axis linear module 111 can drive the tin removal base plate 112 and the cylinder 40 and the sliding track 113 installed on the tin removal base plate 112 to move along the Z-axis, and the cylinder 40 can drive the tin removal sliding seat 114 to move along the sliding track 113; the vacuum suction nozzle is used to suck away the melted tin slag and collect it into the tin slag pot 116, and the detection function of the weighing sensor 39 can protect the vacuum suction nozzle from damaging the soldering pad. The top of the heating tube 41 is set as a ventilation interface of the external air source. After the external air is blown into the heating tube 41, hot air is blown out through the air outlet nozzle. After the residual tin is melted, it can be sucked into the tin slag pot 116 through the vacuum suction nozzle for storage.

[0063] Furthermore, the PCB clamping assembly 300 includes front and rear stretching rails 31, a fixed plate arranged on the front and rear stretching rails 31, two movable rails 301 arranged side by side and installed on the fixed plate, a sliding rail 302 spanning the two movable rails 301, a plurality of PCB board clamping jigs 30 arranged on the sliding rails 302, a handle 33 and an optical fiber sensor installed at the front end of the fixed plate, and a stop cylinder 32 for limiting the movement of the fixed plate on the front and rear stretching rails 31. When the handle 33 is pulled, the fixed plate can be driven to move on the front and rear stretching rails 31, so that the operator can load and unload the PCB board conveniently; the movable rail 301 is used to guide and support the sliding guide rail 302 to ensure its stable movement. The sliding guide rail 302 spans over the two movable guide rails 301 and can move along the movable guide rails 301 to drive the PCB board clamping fixture 30 set thereon to move forward and backward; the PCB board clamping fixture 30 is used to clamp and fix the PCB board to ensure the stability and precise alignment of the PCB board 11 during the rework process; the optical fiber sensor facilitates the operator to load and unload the PCB board 11; the stop cylinder 32: is used to limit the movement range of the fixed plate on the front and rear stretching guide rails 31 to prevent it from excessive movement or accidental derailment, thereby ensuring the safety of the equipment and operators.

[0064] Furthermore, the feeding and scraping solder paste assembly 200 includes a lifting cylinder 27, a mounting cabinet 280 disposed at the output end of the lifting cylinder 27, a sliding track 281 disposed in the mounting cabinet 280, a sliding mounting plate slidably connected to the sliding track 281, a screw motor mounted on the mounting cabinet 280 and connected to the sliding mounting plate, a lifting cylinder 282 mounted on the sliding mounting plate, a scraper 283 disposed at the output end of the lifting cylinder 282, and a bearing seat 283 disposed at one end of the top of the mounting cabinet 280. 8, and a feeding tray 29, a waste tray 290, and a tin slag collector 291 are arranged at one end of the top of the installation cabinet 280; a bearing groove 284 is provided on the bearing seat 28; a waist-shaped sliding hole 285 is also provided on the top of the installation cabinet 280, and the waist-shaped sliding hole 285 is placed on both sides of the bearing seat 28, and the scraper 283 passes through the waist-shaped sliding hole 285 and spans the bearing seat 28, wherein the sliding installation plate is slidably connected with the sliding track 281, and can move along the track, which may be used to adjust the position or angle of the scraper 283. The bearing groove 284 is used to place solder paste, which is helpful for the storage and scraping of solder paste.

[0065] The feeding tray 29 is used to place solder paste or other welding materials for scraping by the scraper 283. The waste tray 290 is used to collect the waste generated during the scraping process to keep the working area clean. The tin slag collector 291 collects the tin slag generated during the scraping process to facilitate the recycling and treatment of waste. The working principle of the feeding and scraping solder paste assembly 200: the lifting cylinder 27 drives the installation cabinet 280 and the components installed on the installation cabinet 280 to lift and lower, and the screw motor drives the lifting cylinder 282 to move back and forth, thereby driving the scraper 283 to move along the waist-shaped sliding hole 285, so as to scrape the solder paste on the bearing seat 28 to the bearing groove 284, and scrape the solder paste evenly.

[0066] Furthermore, the external camera assembly 500 includes an external industrial camera 45, a universal coil 46 with one end arranged on the external industrial camera 45, a locking valve 461 installed on the universal coil 46, a fixed block 451 clamped on the external industrial camera 45, a movable block 452 movably connected to the fixed block 451, and an external camera light source 44 installed on the movable block 452; the other end of the universal coil 46 is connected to the frame 1, and the universal coil 46 can provide flexible steering and positioning capabilities, allowing the external industrial camera 45 to be adjusted in different directions to meet the shooting requirements of different angles. The locking valve 461 is installed on the universal coil 46 to fix the position of the coil. Once the external industrial camera 45 is adjusted to a suitable position, it can be locked by the locking valve 461 to ensure the stability of the camera position during welding. Fixed block 451: It is clamped on the external industrial camera 45 to provide stable support for the camera and serve as a base point for connecting other components. The movable block 452 is movably connected to the fixed block 451, allowing the position or angle of the external camera light source 44 to be adjusted within a certain range.

[0067] Working principle of this utility model:

[0068] During operation, the PCBA board is first manually placed on the workbench device 1 and clamped to limit position, and then the PCB heating component 400 preheats the PCB board 11 as a whole, and then the fixed-point heating component 17 is driven by the mobile module on the PCB heating component 400 to move to the fixed-point heating area of ​​the PCB board 11. At the same time, the mobile module 100 drives the welding head component 8 to align with the fixed-point heating area and blows hot air to heat it. At this time, the collapse quality of the solder ball during heating can be observed through the external camera component 500. By preheating with the upper and lower heating methods, the melting rate of the solder ball can be accelerated, the mounting efficiency can be improved, and the solder head component 7 can be removed at the same time. The melted solder ball is absorbed; during mounting, the mobile module 100 drives the welding head assembly 8 to absorb the BGA chip onto the feeding and scraping solder paste assembly 200, which scrapes the solder paste flat in advance, and then the mobile module 100 drives the BGA chip to descend to dip in the solder paste, and then transfer it to the pad area on the PCB board 11 where it needs to be mounted and soldered, and then the BGA chip and the pad position to be soldered can be aligned through the positioning camera assembly, so that the PIN position on the BGA chip is completely consistent with the corresponding point on the pad, and then the BGA chip is mounted on the corresponding pad to complete the reverse work.

[0069] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A new fully automatic intelligent rework station, characterized by: include: A frame, a mobile module arranged on the frame, a PCB clamping assembly, a PCB heating assembly, an outer camera assembly, a feeding and scraping solder paste assembly, and a detinning head assembly, a positioning camera assembly, and a welding head assembly arranged on the mobile module; The PCB heating assembly is placed below the PCB clamping assembly and is used to preheat the PCB board clamped on the PCB clamping assembly; The PCB heating assembly includes a frame, a temperature zone assembly arranged in the frame, a moving assembly spanning the frame, a fixed-point heating assembly arranged on the moving assembly and placed above the temperature zone assembly, and a lifting assembly; The lifting assembly is arranged below the frame and is used to drive the temperature zone assembly in the frame to move up and down; The moving component is used to drive the fixed-point heating component to move in the X-axis and Y-axis directions; The mobile module is used to drive the desoldering head assembly, the positioning camera assembly, and the welding head assembly to move on the X-axis and the Y-axis; The feeding and scraping solder paste assembly is arranged beside the PCB clamping assembly; and the outer camera assembly is placed above the PCB clamping assembly.

2. The new fully automatic intelligent rework station according to claim 1 is characterized in that: The rack is also provided with an electric box, a display, a keyboard and mouse operating assembly, a three-color lamp, and a smoke extracting fan; the electric box is arranged at the lower part of the rack, the display and the keyboard and mouse operating assembly are arranged at one side of the door of the rack, and the three-color lamp and the smoke extracting fan are both arranged at the top of the rack.

3. The new fully automatic intelligent rework station according to claim 1 is characterized in that: The moving module includes a gantry bracket, a Y-axis linear module and an X-axis linear module arranged on the gantry bracket, and a cross-flow fan installed under the gantry bracket; the X-axis linear module is arranged on the Y-axis linear module and can move along the Y-axis.

4. The new fully automatic intelligent rework station according to claim 3 is characterized in that: The output end of the X-axis linear module is also provided with a sliding plate, on which the detinning head assembly, the positioning camera assembly and the welding head assembly are installed.

5. The new fully automatic intelligent rework station according to claim 4 is characterized in that: The welding head assembly includes a mounting seat, an R-axis motor and a suction rod shaft lifting motor arranged on the mounting seat, a suction rod spline shaft connected to the output end of the R-axis motor, a lower blowing seat, a heater, and a hot air pipe arranged in sequence below the mounting seat; one end of the suction rod spline shaft passes through the hot air pipe, the heater, the lower blowing seat, and the mounting seat in sequence and is connected to the output end of the suction rod shaft lifting motor.

6. The new fully automatic intelligent rework station according to claim 4 is characterized in that: The detinning head assembly includes a Z-axis linear module, a detinning base plate arranged on the Z-axis linear module, a cylinder and a sliding rail arranged on the detinning base plate, a weighing sensor arranged on the detinning base plate, a detinning sliding seat arranged on the sliding rail and connected to the output end of the cylinder, a laser displacement sensor arranged on the detinning sliding seat, a detinning fixed cavity seat placed at the bottom of the detinning sliding seat, a heating tube arranged on the detinning sliding seat and one end of which is placed in the detinning fixed cavity seat, an air outlet nozzle arranged at the bottom of the detinning fixed cavity seat, a vacuum suction nozzle inserted in the air outlet nozzle, and a tin slag pot arranged on one side of the detinning fixed cavity seat and connected to the vacuum suction nozzle.

7. The new fully automatic intelligent rework station according to claim 1 is characterized in that: The PCB clamping assembly includes front and rear stretching guide rails, a fixed plate arranged on the front and rear stretching guide rails, two movable guide rails arranged side by side and installed on the fixed plate, a sliding guide rail spanning the two movable guide rails, a plurality of PCB board clamping jigs arranged on the sliding guide rails, a handle and an optical fiber sensor installed at the front end of the fixed plate, and a stop cylinder for limiting the movement of the fixed plate on the front and rear stretching guide rails.

8. The new fully automatic intelligent rework station according to claim 1 is characterized in that: The feeding and scraping solder paste assembly includes a lifting cylinder, a mounting cabinet arranged at the output end of the lifting cylinder, a sliding track arranged in the mounting cabinet, a sliding mounting plate slidably connected to the sliding track, a screw motor installed on the mounting cabinet and connected to the sliding mounting plate, a lifting cylinder 2 installed on the sliding mounting plate, a scraper arranged at the output end of the lifting cylinder 2, a bearing seat arranged at one end of the top of the mounting cabinet, and a feeding tray, a waste tray, and a tin slag collector arranged at one end of the top of the mounting cabinet; a bearing groove is provided on the bearing seat; a waist-shaped sliding hole is also provided on the top of the mounting cabinet, and the waist-shaped sliding hole is placed on both sides of the bearing seat, and the scraper passes through the waist-shaped sliding hole and spans the bearing seat.

9. The new fully automatic intelligent rework station according to claim 1 is characterized in that: The external camera assembly includes an external industrial camera, a universal coil with one end arranged on the external industrial camera, a locking valve installed on the universal coil, a fixed block clamped on the external industrial camera, a movable block movably connected to the fixed block, and an external camera light source installed on the movable block.

10. The new fully automatic intelligent rework station according to claim 1 is characterized in that: The moving component of the PCB heating component includes a Y-axis translation module and an X-axis translation module arranged on the Y-axis translation module; the X-axis translation module is provided with the fixed-point heating component; the fixed-point heating component includes a heating seat, and a plurality of ventilation holes are opened on the heating seat; the lifting component includes a fixed seat, a lifting motor, a reducer arranged at the output end of the lifting motor, a screw rod arranged at the output end of the reducer, a sliding track 2 arranged on both sides of the fixed seat, and a lifting plate arranged on the screw rod and slidably connected to the sliding track 2.

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