tin potter

Abstract

The application discloses a tin coating machine, which comprises a workbench, a moving assembly arranged at the inner wall of the workbench and used for realizing quick movement and positioning of a suction assembly, the suction assembly arranged at the inner wall of the workbench and used for realizing suction movement of a device, and a feeding assembly arranged at the inner wall of the workbench and used for circulating and transporting the device needing tin coating in the workbench. The moving assembly is full direct drive multi-axis linkage, accurate positioning without backlash, greatly reduces tin coating deviation, the suction assembly is multiple parallel groups, the suction nozzle compensates and automatically corrects deviation, visual guidance is efficient and stable, efficiency and precision are significantly improved, the feeding assembly is embedded and circulates to feed, the material taking stroke is shortened, maintenance is convenient, process modules are linearly integrated, vacuum tin suction eliminates bridging defects, yield is improved, a closed purification system effectively controls dust, an operation panel is embedded, the equipment is highly integrated, installation and maintenance cost is low, and environmental protection and easy use are realized.

Description

Technical Field

[0001] This invention belongs to the technical field of electronic device processing equipment, specifically a tinning machine. Background Technology

[0002] In the current field of electronic assembly, tinning is a critical process to ensure the solderability and reliability of devices. However, existing tinning equipment generally suffers from low integration, insufficient automation, and frequent process defects. Regarding motion control, traditional equipment often uses cylinders with lead screws or belt drives, which are prone to backlash and creep during long-term operation, making it difficult to maintain positioning accuracy at the micrometer level. This results in device pick-up misalignment or uneven tinning thickness. The adsorption mechanism is usually a single-nozzle structure, handling only one device at a time, and manual intervention is required to change the nozzle, leading to low efficiency and inability to adapt to batch production cycles. Material feeding methods often rely on independent feeders or manual tray placement, resulting in long material transport paths that are prone to interference with the motion mechanism, and discontinuous feeding causes equipment downtime. At the process integration level, gold removal, tinning, and vacuum tinning for devices such as QFNs are often handled by different dedicated equipment, requiring multiple device transfers. This not only increases positioning errors and oxidation risks but also occupies additional space and manpower. The solder pot and flux units are scattered, resulting in a loose process flow, significant heat loss, and high energy consumption. Furthermore, existing equipment has a rather rudimentary control over the working environment. Tin fumes and flux volatiles are mostly passively extracted through top-mounted fume hoods, resulting in significant dispersion and failing to meet increasingly stringent occupational health and environmental emission standards. The operating interface and control system are typically located in separate external electrical control cabinets, leading to a large overall machine size, long installation and commissioning cycles, and requiring users to separately configure purification devices and material racks, resulting in high overall costs. In summary, existing tinning equipment has significant shortcomings in terms of motion precision, parallel operation capability, process continuity, environmental safety, and structural integration. There is an urgent need for a high-precision, high-efficiency, fully integrated, and environmentally friendly integrated tinning solution. Summary of the Invention

[0003] The technical solution adopted in this invention is as follows: a tinning machine, comprising:

[0004] Workbench;

[0005] A movable component, located on the inner wall of the worktable, is used to enable rapid movement and positioning of the adsorption component.

[0006] An adsorption assembly, located on the inner wall of the worktable, is used to achieve adsorption and movement of the device.

[0007] The feeding assembly, located on the inner wall of the worktable, is used to circulate and transport components that need to be tinned within the worktable.

[0008] Furthermore, the moving component includes a first linear motor, a first moving stage, a mounting plate, a second linear motor, a second moving stage, a third linear motor, a third moving stage, and a rotary table.

[0009] Furthermore, two first linear motors are respectively fixedly mounted on the top sides of the outer wall of the worktable via brackets. Two first movable stages are respectively slidably fitted onto the outer walls of the two first linear motors. The threaded ends of the two first linear motors are respectively threadedly connected to the openings of the inner walls of the first movable stages. The mounting plate is fixedly mounted on the top of the outer wall of the first movable stage. The second linear motor is fixedly mounted on the outer wall of the mounting plate via brackets. The second movable stage is slidably fitted onto the outer wall of the second linear motor. The threaded ends of the second linear motor are respectively threadedly connected to the openings of the inner walls of the second movable stage. The third linear motor is fixedly mounted on the outer wall of the second movable stage via brackets. The third movable stage is slidably fitted onto the outer wall of the third linear motor. The threaded ends of the third linear motor are respectively threadedly connected to the openings of the inner walls of the third movable stage. The rotary table is fixedly mounted at the center of the outer wall of the third movable stage.

[0010] Furthermore, the adsorption assembly is provided in three groups, and each group of the adsorption assembly includes a feeding linear motor, an auxiliary frame, a lifting cylinder, a moving frame, a suction nozzle compensator, a quick connector and a positioning camera.

[0011] Furthermore, a lifting frame is fixedly installed at the center of the outer wall of the rotating end of the rotary table. Each set of adsorption components is equidistantly arranged at the bottom of the outer wall of the lifting frame. The feeding linear motor is fixedly installed at the bottom of the outer wall of the lifting frame. The auxiliary frame is slidably sleeved on the outer wall of the feeding linear motor. The threaded output end of the feeding linear motor is threadedly connected to the inner wall opening of the auxiliary frame. The lifting cylinder is fixedly installed on the outer wall of the auxiliary frame. The moving frame is slidably sleeved on the slide rail end of the outer wall of the auxiliary frame. The suction nozzle compensator is fixedly installed on the outer wall of the moving frame. The suction nozzle compensator is connected to the quick connector. The suction nozzle compensator is connected to the external negative pressure generator through a telescopic tube. The positioning camera is fixedly installed on the outer wall of the lifting frame.

[0012] Furthermore, the feeding assembly includes a feeding rack and a feeding wheel.

[0013] Furthermore, the feeding rack is embedded in the inner wall of the workbench, and the feeding wheel is rotatably embedded in the inner wall of the feeding rack.

[0014] Furthermore, a conveyor belt is fitted onto the outer wall of the feeding wheel, and the feeding wheel is driven by an external motor.

[0015] Furthermore, the outer wall of the workbench is fitted with a protective shell, an operation panel, and a negative pressure platform. An observation panel is rotatably inserted into the outer wall of the workbench, and the negative pressure platform is connected to an external negative pressure collection and purification device via a flexible hose.

[0016] Furthermore, a suction cup storage box, a compensation camera, a gold removal flux supply box, a gold removal solder pot, a soldering flux applicator, a soldering pot, and a vacuum desoldering device are respectively fixedly installed on the top of the outer wall of the workbench.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] (1) The precise combination of the three moving stages and the rotary stage of the present invention constructs a fully direct-drive multi-axis linkage motion system, abandoning the traditional belt, screw or cylinder transmission method, realizing high-precision positioning and fast response. The threaded end of the first linear motor is threaded to the opening of the inner wall of the first moving stage, the threaded end of the second linear motor is threaded to the opening of the inner wall of the second moving stage, and the threaded end of the third linear motor is threaded to the opening of the inner wall of the third moving stage, ensuring that there is no backlash and zero crawling in each axis of motion. The rotary stage is fixed at the center of the outer wall of the third moving stage to provide high rigidity angle adjustment, which significantly improves the position stability and trajectory smoothness during the device handling process, lays an ultra-high precision foundation for the subsequent tinning process, and greatly reduces the tinning defect rate caused by positioning deviation.

[0019] (2) The adsorption components of the present invention are set in multiple groups and fixed at equal intervals to the bottom of the outer wall of the lifting frame at the rotating end of the rotary table. Each group is equipped with an independent feeding linear motor, auxiliary frame, lifting cylinder, moving frame, suction nozzle compensator, quick connector and positioning camera. The feeding linear motor drives the auxiliary frame to slide radially to realize flexible adjustment of the suction nozzle spacing. The lifting cylinder drives the moving frame to rise and fall quickly along the slide rail end of the auxiliary frame. Multiple adsorption components can simultaneously change suction nozzles from the suction cup storage box and pick up multiple devices in parallel, which significantly improves the efficiency of a single operation cycle. The suction nozzle compensator is connected to an external negative pressure generator through a quick connector and automatically compensates for the installation deviation of the suction nozzle and the height difference of the device through the telescopic tube. The positioning camera is fixed to the lifting frame to provide a stable imaging benchmark, avoids vibration interference of moving parts, realizes high-precision identification and real-time feedback compensation of the device center, size and posture, and completely solves the industry problem of low efficiency of traditional single suction nozzle operation and suction nozzle wear leading to misalignment.

[0020] (3) The feeding assembly of the present invention has a feeding rack embedded in the inner wall of the workbench and a feeding wheel embedded in the inner wall of the feeding rack. The outer wall of the feeding wheel is fitted with a conveyor belt and is directly driven by an external motor, forming an embedded closed-loop circulating feeding system. The material tray transmission path is completely enclosed inside the workbench, which greatly shortens the material picking stroke of the moving component and eliminates the waiting time. At the same time, the embedded structure of the feeding rack and the inner wall of the workbench reduces the overall footprint of the equipment. Moreover, the feeding wheel and the conveyor belt assembly are independent of the motion system. During maintenance, there is no need to disassemble the moving or adsorption module, which significantly improves the reliability and maintenance convenience of the equipment. The top of the outer wall of the workbench is arranged in sequence. The fixed suction cup storage box, compensation camera, gold removal flux supply box, gold removal solder pot, soldering flux dispenser, soldering pot, and vacuum desoldering device linearly integrate the entire process module of nozzle storage, visual compensation, gold removal flux dipping, gold removal, soldering flux dipping, soldering, and dedicated vacuum desoldering into a single platform. Driven by the moving components, the devices flow sequentially through each station along the shortest path, avoiding the efficiency loss and secondary pollution caused by traditional material transfer between multiple devices. The vacuum desoldering device removes excess solder in real time for specific packaged devices, eliminating bridging defects from the end of the process chain and significantly improving product yield and consistency.

[0021] (4) The protective shell, operation panel, negative pressure platform, and rotating observation panel of the workbench of the present invention are connected to the external negative pressure collection and purification device through a hose, forming an integrated environmental control and safety protection system. When the protective shell and the observation panel are closed, they form a closed working cavity, which effectively isolates the tin fumes, flux volatiles and high-temperature splashes generated during the tinning process. The negative pressure platform adheres to the outer wall of the workbench and continuously and actively sucks up the tin-containing fumes and dust and transports them through the hose to the external negative pressure collection and purification device for centralized treatment, so that the concentration of fumes and dust in the working area is significantly reduced, which meets the stringent environmental emission standards. The operation panel is directly embedded on the surface of the protective shell, without the need for an independent electrical control cabinet. The operator can complete all parameter settings and status monitoring in the equipment body. The observation panel can be lifted at any time for manual intervention or internal cleaning. The overall structure is much smaller than the traditional split equipment. During installation, only the external power supply and purification hose need to be connected. It is plug-and-play, and the relocation and maintenance costs are significantly reduced. It realizes the high integration, environmental protection and humanization of the tinning equipment, which constitutes a substantial technological advancement in the field of electronic assembly automation. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a perspective view of the protective casing of the present invention;

[0024] Figure 3 This is an enlarged three-dimensional schematic diagram of invention A;

[0025] Figure 4 This is a perspective view of the suction cup storage box of the present invention;

[0026] Figure 5 This is a perspective view of the vacuum desoldering device of the present invention;

[0027] Figure 6 This is a perspective view of the mounting plate of the present invention;

[0028] Figure 7 This is an enlarged three-dimensional schematic diagram of the present invention B.

[0029] The diagram shows the following components: 1. Workbench; 2. Feed rack; 3. Feeding wheel; 4. First linear motor; 5. Mounting plate; 6. Third linear motor; 7. Lifting frame; 8. Compensation camera; 9. Gold removal flux supply box; 10. Gold removal solder pot; 11. Vacuum desoldering device; 12. Soldering flux dispenser; 13. Soldering pot; 14. Suction cup storage box; 101. Protective shell; 102. Operation panel; 103. Negative pressure table; 104. Observation panel; 401. First moving stage; 501. Second linear motor; 502. Second moving stage; 601. Third moving stage; 602. Rotary table; 701. Feeding linear motor; 702. Auxiliary frame; 7021. Lifting cylinder; 703. Moving frame; 704. Suction nozzle compensator; 705. Quick connector; 706. Positioning camera. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] Example 1

[0032] Reference Figure 1 - Figure 7A tinning machine includes: a worktable 1; a moving component located on the inner wall of the worktable 1 for rapid movement and positioning of an adsorption component; an adsorption component located on the inner wall of the worktable 1 for adsorbing and moving components; and a feeding component located on the inner wall of the worktable 1 for circulating and transporting components to be tinned within the worktable 1. The feeding wheel 3 of the feeding component is driven to rotate by an external motor on the inner wall of the feeding rack 2. A conveyor belt fitted on the outer wall of the feeding wheel 3 smoothly circulates the tray loaded with components to be tinned from the loading port of the worktable 1 to the preset working position. The operator starts the entire system through the operation panel 102 fitted on the outer wall of the worktable 1 and can monitor the internal workings in real time by rotating the observation panel 104 inserted on the outer wall of the worktable 1. When the system is in operation, the moving components respond immediately. Two first linear motors 4 are fixed to the top sides of the outer wall of the worktable 1 via brackets. Their threaded ends drive the first moving platform 401 to slide along the outer wall of the first linear motor 4. The first moving platform 401 drives the mounting plate 5 fixed to the top of its outer wall to move horizontally. The second linear motor 501 fixed on the mounting plate 5 drives the second moving platform 502 to move laterally along the outer wall of the second linear motor 501 via its threaded end. The third linear motor 6 fixed to the outer wall of the second moving platform 502 drives the third moving platform 601 to move longitudinally along the outer wall of the third linear motor 6 via its threaded end. The rotary table 602 fixed at the center of the outer wall of the third moving platform 601 rotates accordingly to precisely adjust the angle. The lifting frame 7, fixedly positioned at the center, moves the entire adsorption assembly above the device tray. Three sets of adsorption assemblies are equidistantly positioned at the bottom of the outer wall of the lifting frame 7. A positioning camera 706 in each adsorption assembly is fixed to the outer wall of the lifting frame 7. First, it performs image recognition on the devices on the tray to obtain the center coordinates and dimensions of the devices. After the data is fed back to the control system, the rotary table 602 drives the lifting frame 7 to rotate towards the suction cup storage box 14. The feeding linear motor 701, fixed to the bottom of the outer wall of the lifting frame 7, drives the auxiliary frame 702 to slide along the outer wall of the feeding linear motor 701. A lifting cylinder 7021 fixed to the outer wall of the auxiliary frame 702 pushes the moving frame 703 down along the slide rail end of the outer wall of the auxiliary frame 702. The outer wall of the moving frame 703... The fixed nozzle compensator 704 is connected to an external negative pressure generator via a quick connector 705. Using the negative pressure generated by the telescopic tube, it precisely picks up a nozzle matching the device size from the suction cup storage box 14. The nozzle compensator 704 automatically compensates for nozzle positional deviations. After changing the nozzle, the moving assembly moves the lifting frame 7 back above the device tray. The lifting cylinder 7021 drives the moving frame 703 to descend. The suction force generated by the external negative pressure generator connected to the nozzle compensator 704 via the quick connector 705 picks up the device from the tray. The three suction assemblies can simultaneously pick up three devices to improve work efficiency. Subsequently, the moving assembly moves the lifting frame 7 to the compensation camera 8 fixed to the top of the outer wall of the worktable 1. The compensation camera 8 provides high-precision imaging of the bottom of the device.The nozzle compensator 704 fine-tunes the angle and position offset of the device based on the identification result to ensure the positioning accuracy of subsequent processes. After compensation, the moving component sequentially moves the device to the gold removal flux supply box 9 to dip in gold removal flux, then to the gold removal solder pot 10 for gold removal treatment to remove the gold layer on the surface of the device pins, then to the soldering flux applicator 12 to dip in soldering flux, and then to the soldering solder pot 13 for soldering to evenly tin the pins. If the control system determines that the device is a QFN package type, the moving component moves the device to the vacuum desoldering pump 11, which removes excess solder between the pins to avoid short circuit defects. After completing all soldering processes, the moving component returns the device to the material tray position, and the lifting cylinder... The 7021 drive mechanism 703 descends, and the suction nozzle compensator 704 releases negative pressure to precisely place the components back into the tray. Subsequently, the moving component and suction component continue the process of suction, identification, compensation, gold removal, tinning, and vacuum tinning for the next set of untinned components. The feeding roller 3 continuously drives the conveyor belt to circulate and supply the tray until all components have completed tinning. Finally, the feeding component uses the conveyor belt to deliver the tray full of tinned components from the outlet of the workbench 1. Throughout the process, the negative pressure stage 103 is connected to an external negative pressure collection and purification device via a hose to continuously absorb the smoke and impurities generated during operation. The protective shell 101 maintains a clean environment inside the equipment. The operation panel 102 automatically controls the coordinated operation of all components, achieving efficient and precise batch tinning operations.

[0033] Reference Figure 1 - Figure 7The moving assembly includes a first linear motor 4, a first moving stage 401, a mounting plate 5, a second linear motor 501, a second moving stage 502, a third linear motor 6, a third moving stage 601, and a rotary table 602. The two first linear motors 4 are respectively fixedly mounted on the top sides of the outer wall of the worktable 1 via brackets. The two first moving stages 401 are slidably fitted onto the outer walls of the two first linear motors 4. The threaded ends of the two first linear motors 4 are threadedly connected to the openings in the inner walls of the first moving stages 401. The mounting plate 5 is fixedly mounted on the top of the outer wall of the first moving stage 401. The second linear motor 501 is fixedly mounted on the outer wall of the mounting plate 5 via brackets. The second moving stage 502 is slidably fitted onto the second linear motor 6. At the outer wall of 501, the threaded ends of the second linear motor 501 are threadedly connected to the openings of the inner wall of the second moving stage 502. The third linear motor 6 is fixedly mounted on the outer wall of the second moving stage 502 via a bracket. The third moving stage 601 is slidably sleeved on the outer wall of the third linear motor 6, and the threaded ends of the third linear motor 6 are threadedly connected to the openings of the inner wall of the third moving stage 601. The rotary table 602 is fixedly mounted at the center of the outer wall of the third moving stage 601. Three sets of adsorption components are provided. Each set of adsorption components includes a feeding linear motor 701, an auxiliary frame 702, a lifting cylinder 7021, a moving frame 703, a suction nozzle compensator 704, a quick connector 705, and a positioning camera 706. The rotation of the rotary table 602... A lifting frame 7 is fixedly installed at the center of the outer wall of the lifting frame 7. Each set of adsorption components is equidistantly arranged at the bottom of the outer wall of the lifting frame 7. A feeding linear motor 701 is fixedly installed at the bottom of the outer wall of the lifting frame 7. An auxiliary frame 702 is slidably sleeved on the outer wall of the feeding linear motor 701. The threaded output end of the feeding linear motor 701 is threadedly connected to the opening of the inner wall of the auxiliary frame 702. A lifting cylinder 7021 is fixedly installed on the outer wall of the auxiliary frame 702. A moving frame 703 is slidably sleeved on the slide rail end of the outer wall of the auxiliary frame 702. A suction nozzle compensator 704 is fixedly installed on the outer wall of the moving frame 703. The suction nozzle compensator 704 is connected to a quick connector 705. The suction nozzle compensator 704 is connected to an external negative pressure generator through a telescopic tube. The positioning camera 706 is fixedly installed on the outer wall of the lifting frame 7. The feeding assembly includes a feeding frame 2 and a feeding wheel 3. The feeding frame 2 is embedded in the inner wall of the worktable 1. The feeding wheel 3 is rotatably embedded in the inner wall of the feeding frame 2. A conveyor belt is sleeved on the outer wall of the feeding wheel 3. The feeding wheel 3 is driven by an external motor. The worktable 1 serves as the physical support platform. The moving assembly constructs an X-axis driving layer through a first linear motor 4 and a first moving stage 401. The mounting plate 5 serves as a transition connector. A second linear motor 501 and a second moving stage 502 construct a Y-axis driving layer. A third linear motor 6 and a third moving stage 601 construct a Z-axis driving layer. A rotary table 602 is fixed at the center of the third moving stage 601 to achieve θ-axis rotation, forming a four-axis linkage precision motion system.The adsorption assembly relies on the lifting frame 7 fixed at the rotating end of the rotary table 602 to achieve overall angle adjustment. The three adsorption assemblies are equidistantly arranged at the bottom of the lifting frame 7. Each assembly is driven by an independent feeding linear motor 701 to move the auxiliary frame 702 radially. The lifting cylinder 7021 drives the moving frame 703 to rise and fall along the slide rail of the auxiliary frame 702. The suction nozzle compensator 704 is fixed to the moving frame 703 and connected to an external negative pressure generator via a quick connector 705. The positioning camera 706 is fixed to the lifting frame 7 to achieve visual guidance, forming an adsorption execution unit with position compensation and parallel operation capabilities. The feeding assembly supports the feeding wheel 3 through the feeding frame 2 embedded in the inner wall of the worktable 1. The feeding wheel 3 is driven by an external motor and drives the conveyor belt to rotate in a cycle, forming an embedded continuous feeding channel. In the overall structure, the moving assembly is mounted on the top outer side of the worktable 1, the adsorption assembly is suspended above the inner cavity of the worktable 1, and the feeding assembly is embedded in the bottom of the inner wall of the worktable 1. The three are spatially compact and do not interfere with each other. The beneficial effects of each module are as follows: The moving component is driven by a combination of a first linear motor 4, a second linear motor 501, a third linear motor 6, and a rotary table 602, abandoning traditional belt or lead screw transmissions to achieve micron-level positioning accuracy and high-speed response. The first moving table 401, the second moving table 502, and the third moving table 601 are precisely guided along the threaded ends to ensure smooth and backlash-free movement. The adsorption component is equipped with three independent units integrated into the same lifting frame 7. The auxiliary frame 702 is radially fed by a feeding linear motor 701, and the spacing between each suction nozzle can be flexibly adjusted to adapt to different devices. The components are arranged in a vertical motion, driven by a lifting cylinder 7021 to move the moving frame 703 for quick loading and unloading. The nozzle compensator 704, through a telescopic tube and quick connector 705, can automatically compensate for nozzle installation deviations and component height differences. The positioning camera 706 is fixed to the lifting frame 7 to provide a stable imaging reference and avoid recognition errors caused by vibration of moving parts. The feeding assembly embeds the feeding frame 2 into the inner wall of the workbench 1. The feeding wheel 3 is built-in and rotates to drive the conveyor belt. The material circulation path is closed inside the workbench 1 to reduce external interference. The external motor directly drives the feeding wheel 3, which has high transmission efficiency and is easy to maintain. The core of this invention lies in the following: three sets of adsorption components are fixed in an equidistant array to the bottom of the lifting frame 7 driven by the rotary table 602, forming a rotary multi-head pick-and-place mechanism. This breaks through the single-nozzle piece-by-piece operation mode. The threaded drive structure of the feeding linear motor 701 and the auxiliary frame 702 enables independent fine-tuning of the nozzle position. Together with the nozzle compensator 704, they form an adaptive suction system. The nozzle compensator 704 is connected to the quick connector 705 and to an external negative pressure generator via a telescopic tube. The structure is highly integrated, enabling both quick nozzle replacement and real-time posture correction. The feeding component embeds the feeding wheel 3 and the conveyor belt into the inner wall of the worktable 1, forming a three-dimensional layered layout with the moving component and the adsorption component, optimizing space utilization.The positioning camera 706 is fixed to the lifting frame 7 instead of the moving frame 703, making the vision system relatively independent from the suction execution end, reducing motion inertia and improving image acquisition stability. The advantages of this invention are particularly significant compared to existing technologies: the moving component, driven by a multi-axis linear motor and a rotary table, exhibits smooth motion trajectory and rapid acceleration / deceleration response, achieving micron-level positioning repeatability, far exceeding traditional cylinder or stepper motor solutions; the three parallel operation groups of the suction components triple the number of devices processed in a single cycle, and each group has independent radial movement capability driven by a linear motor 701, allowing for switching between different spacing trays without stopping the machine, greatly enhancing equipment flexibility; the linkage design of the suction nozzle compensator 704 and the quick connector 705 allows for automatic adjustment of the suction nozzle based on subsequent visual feedback after device pickup. The tilt and height of the nozzle prevent misalignment due to nozzle wear or component tolerances; the embedded circulation structure of the feeding assembly minimizes the material tray transport path; the feeding roller 3 works in conjunction with the conveyor belt to achieve continuous and stable feeding, eliminating waiting time interruptions; the entire system uses the worktable 1 as a single integrated base, with all modules fixed by threaded connections or embedding, allowing for disassembly and assembly without interference, significantly improving maintenance convenience; furthermore, the positioning camera 706 is fixed to the lifting frame 7, allowing the camera's field of view to cover all workstations as the rotary table 602 rotates, eliminating the need for independent vision devices for each workstation, reducing manufacturing costs and system complexity. In summary, this invention achieves breakthrough progress in motion accuracy, operating efficiency, equipment flexibility, structural integration, and cost control, constituting a substantial innovation in the field of tinning equipment technology.

[0034] Reference Figure 1 - Figure 7The outer wall of the workbench 1 is fitted with a protective shell 101, an operation panel 102, and a negative pressure platform 103. An observation panel 104 is rotatably inserted into the outer wall of the workbench 1. The negative pressure platform 103 is connected to an external negative pressure collection and purification device via a flexible hose. At the top of the outer wall of the workbench 1, a suction cup storage box 14, a compensation camera 8, a gold-removing flux supply box 9, a gold-removing solder pot 10, a soldering flux applicator 12, a soldering pot 13, and a vacuum desoldering device 11 are fixedly installed. Using the workbench 1 as the integrated base, the protective shell 101, operation panel 102, negative pressure platform 103, and observation panel 104 constitute an environmental control and human-machine interface layer, directly attached to... The outer wall of workbench 1; suction cup storage box 14, compensation camera 8, gold removal flux supply box 9, gold removal solder pot 10, soldering flux applicator 12, soldering pot 13 and vacuum desoldering device 11 constitute the process execution layer, which is centrally fixed to the top of the outer wall of workbench 1, forming a three-dimensional cross layout with the movement space of the moving components and adsorption components; negative pressure stage 103 is connected to the external negative pressure collection and purification device through a hose to remove dust from the system, and protective shell 101 and observation panel 104 together maintain the internal micro-positive pressure or micro-negative pressure environment; all modules in the overall structure are directly fixed to workbench 1 by mechanical fastening, without the need for independent brackets, and the structure is highly compact.The beneficial effects of each module are as follows: the protective shell 101 is fitted onto the outer wall of the workbench 1, effectively isolating solder fumes, flux volatiles, and dust generated during the soldering process, preventing pollution of the workshop environment, and reducing interference from external airflow on precision moving parts; the operation panel 102 integrates control circuitry and a display interface, allowing operators to directly set parameters, control start / stop, and monitor status on the surface of the workbench 1 without the need for an external control cabinet, simplifying equipment layout; the negative pressure platform 103 is attached to the outer wall of the workbench 1 and connected to an external negative pressure collection and purification device, actively adsorbing solder fumes and particles drifting from the work area, eliminating harmful substances at the source, and the flexible hose connection facilitates installation and maintenance; the observation panel 104 is rotatably inserted into the outer wall of the workbench 1, allowing operators to open it at any time to observe the internal operating status or perform manual intervention, and when closed, it forms a continuous sealing surface with the protective shell 101; the suction cup storage box 14 is fixed to the top of the outer wall of the workbench 1. The device features multiple built-in suction nozzles, allowing for quick and easy nozzle replacement, shortening the pick-and-place path and improving changeover efficiency. A compensation camera 8, fixed to the top of the workbench 1, provides a bottom imaging reference for the device. Its fixed installation ensures a constant imaging angle, preventing image blurring caused by vibrations of moving parts. A flux supply box 9 and a solder pot 10 are sequentially fixed, providing flux and molten solder respectively for the gold removal process. Their proximity forms a gold removal station, shortening device transfer time. A soldering flux dispenser 12 and a solder pot 13 are sequentially fixed, forming a soldering station. Their linear arrangement with the gold removal station ensures a smooth process flow. A vacuum desoldering device 11, fixed after the solder pot 13, is specifically designed to remove excess solder from flat-bottomed devices such as QFNs, preventing bridging and short circuits. An external negative pressure collection and purification device is connected to the negative pressure stage 103 via a flexible hose, centrally filtering and discharging tin-containing fumes in compliance with environmental regulations. The protective shell 101, operation panel 102, negative pressure platform 103, and observation panel 104 are directly fitted or inserted into the outer wall of the workbench 1, eliminating the need for traditional independent electrical control cabinets and dust collection hoods. This significantly enhances the overall integrity of the equipment, resulting in a simpler appearance and reduced footprint. The suction cup storage box 14, compensation camera 8, gold removal flux supply box 9, gold removal solder pot 10, tinning flux dispenser 12, tinning solder pot 13, and vacuum desoldering device 11 are all fixed to the top of the outer wall of the workbench 1, forming a planar process island layout. Together with the lower feeding component and the upper moving suction component, this creates a three-dimensional working space that does not interfere with each other and has the shortest path. The negative pressure platform 103 and the protective shell 101 are integrated into the design, embedding the dust collection port into the outer wall of the workbench 1, avoiding the need for additional hanging dust collection pipes. The vacuum desoldering device 11 is connected in series with the tinning solder pot 13 as a dedicated module, integrating debridging function for the first time in a tinning machine, enabling timely defect repair.Traditional tinning equipment typically separates the operating interface, fume purification device, nozzle storage, and process tin pot, requiring additional control cabinets, dust collectors, and material racks. This invention integrates all functional modules into the workbench 1 body, reducing the overall equipment volume by more than 30%, eliminating the need for users to purchase additional accessories. The enclosed cavity formed by the protective shell 101 and the observation panel 104, combined with the active suction of the negative pressure stage 103, reduces the fume concentration in the working environment by more than 90%, superior to open-type equipment. The operating panel 102 is fixed to the outer wall of the workbench 1, with an ergonomic operating height to avoid bending over or tiptoeing. The compensation camera 8 is fixedly installed rather than moving, forming a... The device is stable and reliable, with recognition accuracy unaffected by the acceleration or deceleration of moving parts. The suction cup storage box 14 is located at the top edge of the workbench 1; the suction component can reach the nozzle position simply by rotating, reducing nozzle replacement time to less than 2 seconds. The gold removal pot 10 and the tinning pot 13 are fixed side-by-side with optimized spacing to minimize the transfer distance between the gold removal and tinning processes, reducing heat loss and oxidation. The vacuum desoldering device 11 is adjacent to the tinning pot 13, allowing immediate processing of QFN devices after tinning, avoiding secondary handling. The external negative pressure collection and purification device is quickly connected to the negative pressure platform 103 via a flexible hose, eliminating the need for on-site piping during installation and allowing for easy separation during relocation or maintenance. In summary, this invention achieves a high degree of integration, environmental friendliness, and ease of use in tinning equipment by fully integrating environmental control, human-machine interaction, process execution, and material storage modules into the outer wall and top of the workbench 1, constituting a groundbreaking innovation in the structural layout of existing tinning machines.

[0035] Working principle:

[0036] The conveyor belt fitted on the outer wall of the feeding roller 3 smoothly circulates the tray loaded with components to be soldered from the loading port of the workbench 1 to the preset working position. The operator starts the entire system through the operation panel 102 fitted on the outer wall of the workbench 1 and can monitor the internal operating status in real time through the observation panel 104 inserted into the outer wall of the workbench 1. The moving components respond immediately. The two first linear motors 4 are fixed to the top sides of the outer wall of the workbench 1 by brackets. Their threaded ends drive the first moving stage 401 to slide along the outer wall of the first linear motor 4. The first moving stage 401 drives the mounting plate 5 fixed to the top of its outer wall to move horizontally. The second linear motor 501 fixed on the mounting plate 5 drives the second moving stage 502 to move along the outer wall of the second linear motor 501 through its threaded end. Lateral displacement of the wall, the third linear motor 6 fixed to the outer wall of the second moving stage 502 drives the third moving stage 601 to move longitudinally along the outer wall of the third linear motor 6 through the threaded end. The rotary table 602 fixed at the center of the outer wall of the third moving stage 601 rotates accordingly to precisely adjust the angle. The lifting frame 7 fixed at the center of the outer wall of the rotating end of the rotary table 602 carries the adsorption assembly and moves it to the top of the device tray. There are three sets of adsorption assemblies, which are equidistantly arranged at the bottom of the outer wall of the lifting frame 7. The positioning camera 706 in each set of adsorption assemblies is fixed to the outer wall of the lifting frame 7. First, the device on the tray is image recognized to obtain the center coordinates and size specifications of the device. After the data is fed back to the control system, the rotary table 602 drives the lifting frame 7 to turn to the suction cup storage box 14 for... The linear motor 701 is fixed to the bottom of the outer wall of the lifting frame 7. Its threaded output end drives the auxiliary frame 702 to slide along the outer wall of the linear motor 701. The lifting cylinder 7021 fixed to the outer wall of the auxiliary frame 702 pushes the moving frame 703 down along the slide rail end of the outer wall of the auxiliary frame 702. The nozzle compensator 704 fixed to the outer wall of the moving frame 703 is connected to an external negative pressure generator through a quick connector 705. The negative pressure generated by the telescopic tube is used to accurately pick up the nozzle matching the size of the device from the suction cup storage box 14. The nozzle compensator 704 automatically completes the position deviation compensation of the nozzle. After the nozzle is replaced, the moving component moves the lifting frame 7 back to above the device tray. The lifting cylinder 7021 drives the moving frame 703 down. The nozzle compensator 704 is connected to the quick connector 705. The external negative pressure generator uses suction to lift the device from the tray. Three sets of suction components can simultaneously lift three devices to improve work efficiency. Then, the moving component moves the lifting frame 7 to the compensation camera 8 fixed on the top of the outer wall of the worktable 1. The compensation camera 8 performs high-precision imaging of the bottom of the device. The suction nozzle compensator 704 finely adjusts the angle and position offset of the device according to the recognition result to ensure the positioning accuracy of subsequent processes. After compensation, the moving component sequentially moves the device to the gold removal flux supply box 9 to dip in gold removal flux, then to the gold removal solder pot 10 for gold removal treatment to remove the gold layer on the surface of the device pins, then to the soldering flux applicator 12 to dip in soldering flux, and then to the soldering solder pot 13 for soldering to make the pins evenly soldered.If the control system determines that the device is a QFN package type, the moving component moves the device to the vacuum desoldering pump 11. The vacuum desoldering pump 11 removes excess solder between the pins to avoid short circuit defects. After completing the entire tinning process, the moving component transports the device back to the material tray position. The lifting cylinder 7021 drives the moving frame 703 to descend, and the suction nozzle compensator 704 releases negative pressure to accurately place the device back into the tray. Subsequently, the moving component and the suction component continue to perform the next set of untinned devices' suction, identification, compensation, gold removal, tinning, and vacuum desoldering processes. The feeding wheel 3 continuously drives the conveyor belt to circulate and supply the tray until all devices have completed the tinning process. Finally, the feeding component sends the tray full of tinned devices out of the workbench 1's outlet via the conveyor belt. Throughout the process, the negative pressure stage 103 is connected to an external negative pressure collection and purification device through a hose to continuously absorb the smoke and impurities generated during the operation. The protective shell 101 maintains a clean environment inside the equipment. The operation panel 102 automatically controls the coordinated operation of each component to achieve efficient and accurate batch tinning operations.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tinning machine, characterized in that, include: Workbench (1); A movable component is located on the inner wall of the workbench (1) to enable rapid movement and positioning of the adsorption component; An adsorption assembly is located on the inner wall of the worktable (1) to achieve adsorption and movement of the device; The feeding assembly is located on the inner wall of the workbench (1) and is used to circulate and transport the tinned components in the workbench (1).

2. The tinning machine as described in claim 1, characterized in that: The moving assembly includes a first linear motor (4), a first moving stage (401), a mounting plate (5), a second linear motor (501), a second moving stage (502), a third linear motor (6), a third moving stage (601), and a rotary table (602).

3. The tinning machine as described in claim 2, characterized in that: Two first linear motors (4) are fixedly mounted on the top sides of the outer wall of the worktable (1) via brackets. Two first movable stages (401) are slidably mounted on the outer walls of the two first linear motors (4). The threaded ends of the two first linear motors (4) are threadedly connected to the openings of the inner walls of the first movable stages (401). The mounting plate (5) is fixedly mounted on the top of the outer wall of the first movable stage (401). The second linear motor (501) is fixedly mounted on the outer wall of the mounting plate (5) via brackets. The second movable stage (502) is slidably mounted on the outer wall of the worktable (1). The second linear motor (501) is located on the outer wall of the second linear motor (501), and the threaded end of the second linear motor (501) is threadedly connected to the opening of the inner wall of the second moving stage (502). The third linear motor (6) is fixedly mounted on the outer wall of the second moving stage (502) by a bracket. The third moving stage (601) is slidably mounted on the outer wall of the third linear motor (6), and the threaded end of the third linear motor (6) is threadedly connected to the opening of the inner wall of the third moving stage (601). The rotary table (602) is fixedly mounted at the center of the outer wall of the third moving stage (601).

4. The tinning machine as described in claim 3, characterized in that: The adsorption assembly is provided in three groups. Each group of the adsorption assembly includes a feeding linear motor (701), an auxiliary frame (702), a lifting cylinder (7021), a moving frame (703), a suction nozzle compensator (704), a quick connector (705), and a positioning camera (706).

5. The tinning machine as described in claim 4, characterized in that: A lifting frame (7) is fixedly installed at the center of the outer wall of the rotating end of the rotary table (602). Each set of adsorption components is equidistantly arranged at the bottom of the outer wall of the lifting frame (7). The feeding linear motor (701) is fixedly installed at the bottom of the outer wall of the lifting frame (7). The auxiliary frame (702) is slidably sleeved on the outer wall of the feeding linear motor (701). The threaded output end of the feeding linear motor (701) is threadedly connected to the opening of the inner wall of the auxiliary frame (702). The lifting cylinder (7... 021) Fixedly installed on the outer wall of the auxiliary frame (702), the movable frame (703) is slidably sleeved on the slide rail end of the outer wall of the auxiliary frame (702), the suction nozzle compensator (704) is fixedly installed on the outer wall of the movable frame (703), the suction nozzle compensator (704) is connected to the quick connector (705), the suction nozzle compensator (704) is connected to the external negative pressure generator through the telescopic tube, and the positioning camera (706) is fixedly installed on the outer wall of the lifting frame (7).

6. The tinning machine as described in claim 5, characterized in that: The feeding assembly includes a feeding rack (2) and a feeding wheel (3).

7. The tinning machine as described in claim 6, characterized in that: The feeding rack (2) is embedded in the inner wall of the workbench (1), and the feeding wheel (3) is rotatably embedded in the inner wall of the feeding rack (2).

8. The tinning machine as described in claim 7, characterized in that: The outer wall of the feeding wheel (3) is fitted with a conveyor belt, and the feeding wheel (3) is driven by an external motor.

9. The tinning machine as described in claim 8, characterized in that: The outer wall of the workbench (1) is fitted with a protective shell (101), an operation panel (102) and a negative pressure platform (103). An observation panel (104) is rotatably inserted into the outer wall of the workbench (1). The negative pressure platform (103) is connected to an external negative pressure collection and purification device through a flexible hose.

10. The tinning machine as described in claim 9, characterized in that: The top of the outer wall of the workbench (1) is fixedly equipped with a suction cup storage box (14), a compensation camera (8), a gold removal flux supply box (9), a gold removal solder pot (10), a soldering flux applicator (12), a soldering pot (13), and a vacuum desoldering device (11).

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