Novel tinning machine and using method

Abstract

A novel tinning machine comprises an operation platform, and a mimicry transplanting module, a visual feeding module, a scaling powder coating module, a gold removing module, a hot air knife module, a tinning module, a suction nozzle bin module and a reinspection module are integrated on the operation platform. The mimicry transplanting module is used for grabbing, transplanting and posture adjustment of workpieces and supports three-dimensional translation and double-shaft rotation freedom degrees. The visual feeding module carries a deep learning algorithm and can recognize the contour and size of a workpiece and generate positioning coordinates. The invention also discloses a use method of the novel tinning machine, which comprises the following steps of: importing data, importing a workpiece three-dimensional model into a visual inspection camera, and establishing a feature point recognition model through a deep learning algorithm; path learning: the mimicry transplanting module records grabbing, tin immersion and obstacle avoidance tracks through manual teaching, and generates a mimicry transplanting path; and processing. The high-efficiency, high-precision and high-flexibility machining capacity is achieved, and the multi-variety and small-batch flexible production requirements in the electronic manufacturing field are particularly met.

Description

Technical Field

[0001] The present invention relates to the technical field of surface treatment equipment, and particularly to a new type of tinning machine and its usage method. Background Art

[0002] A tinning machine is a device used for coating the surface of electronic components with metallic tin, mainly for improving the electrical conductivity and corrosion resistance of the components. Tinning machines can be divided into two types: fully automatic and semi-automatic, and are widely used in the fields of electronics, electrical appliances, communications, instrumentation, etc.

[0003] Currently, in traditional tinning machines, the layouts of various functional areas are relatively scattered, the volume of the equipment and the occupied installation space are large; the processing flexibility is poor, it is difficult to process different types of workpieces in one process, and the compatibility is poor; it relies on manual positioning of workpieces, with low efficiency and easy errors; the process parameters such as gold removal and tinning are fixed and cannot be dynamically adjusted, resulting in a low yield rate; the flexibility of processing actions is insufficient, making it impossible to improve the processing accuracy and yield rate of workpieces; Therefore, in view of the deficiencies in the existing technology, it is necessary to design a new type of tinning machine and its usage method to solve the above problems.

[0004] It should be noted that the above introduction of the technical background is only for the convenience of clearly and completely explaining the technical solution of the present invention and facilitating the understanding of those skilled in the art, and it cannot be considered that the above content is well-known to those skilled in the art just because these contents are described in the background art of the present invention. Summary of the Invention

[0005] To overcome the above deficiencies in the existing technology, the purpose of the present invention is to disclose a new type of tinning machine and its usage method, so as to solve the technical problems of low efficiency, poor compatibility and uncontrollable quality of traditional equipment.

[0006] The present invention discloses a new type of tinning machine, which includes an operation platform, and integrated on the operation platform are a mimicry transplanting module, a vision loading module, a flux coating module, a gold removal module, a hot air knife module, a tinning module, a nozzle bin module and a re-inspection module.

[0007] The mimicry transplanting module is used for grasping, transplanting and attitude adjustment of workpieces, supporting three-dimensional translation and two-axis rotation degrees of freedom, and its composition includes: An XYZ linear motion mechanism, which provides three-dimensional translation degrees of freedom by orthogonally connecting an X-direction linear motion module, a Y-direction linear motion module and a Z-direction linear motion module in sequence; The first motor is fixed to the end of the XYZ linear motion mechanism, and the axis direction of the first motor is parallel to one of the X-axis linear motion module and the Y-axis linear motion module; the first reduction gearbox, the input end of which is connected to the output end of the first motor; the second motor is fixed to the end of the first reduction gearbox, and the axis direction of the second motor is perpendicular to the axis direction of the first motor; the negative pressure suction nozzle mounting seat is fixed to the end of the second motor, on which a pressure sensor is provided, and is detachably connected to the negative pressure suction nozzle. The first motor rotates horizontally through the first reduction gearbox, and the second motor rotates vertically to realize the pitching and deflection of the negative pressure suction nozzle; a built-in pressure sensor monitors the contact state between the negative pressure suction nozzle and the workpiece.

[0008] Vision feeding module: used for the identification and positioning of workpieces.

[0009] Flux coating module: used for coating flux on the surface of workpieces to ensure the quality of tinning.

[0010] Gold removal module: used to reduce the gold content of workpieces.

[0011] Hot air knife module: used for heating workpieces.

[0012] Tinning module: used for tinning treatment of workpieces.

[0013] Suction nozzle bin module: used for storing and automatically replacing negative pressure suction nozzles of different specifications to adapt to different workpieces.

[0014] Re-inspection module: used for surface quality re-inspection of finished workpieces to ensure that the tinning quality meets the requirements.

[0015] Preferred technical solution: The vision feeding module includes: The mounting plate is fixed on the working platform.

[0016] The feeding tray is made of transparent material and is arranged on the mounting plate. The surface of the feeding tray is divided into a plurality of cells in the X-axis and Y-axis directions for mixing and loading workpieces of different specifications.

[0017] The flat panel light source is arranged parallel to the upper part of the feeding tray, which can make the workpiece form uniform backlight under the feeding tray and enhance the visual contrast.

[0018] The XY linear motion mechanism is arranged under the feeding tray; The vision detection camera is connected to the end of the XY linear motion mechanism, the lens axis is perpendicular to the feeding tray, and is equipped with a deep learning algorithm, which can identify the contour and size of the workpiece and generate positioning coordinates.

[0019] Preferred technical solution: The mounting plate is also provided with a non-conforming product collection tank and a finished product placement tray for storing non-conforming workpieces and processed finished workpieces.

[0020] Preferred technical solution: The second motor is a hollow motor, and the rotating shaft of the second motor is a hollow shaft. The front and rear ends of the hollow shaft are respectively connected to the vacuum pumping pipeline and the negative pressure suction nozzle mounting seat, and are used to provide a negative pressure vacuum pumping channel for the negative pressure suction nozzle mounting seat.

[0021] Preferred technical solution: A second speed reducer is further provided between the second motor and the negative pressure suction nozzle mounting seat, and the second speed reducer is a hollow speed reducer.

[0022] Preferred technical solution: The temperature and wind speed of the hot air knife module can be independently adjusted to achieve precise adjustment of the workpiece heating process, and at the same time, the hot air knife can be used to clean the impurities on the workpiece surface.

[0023] Preferred technical solution: Both the gold removal module and the tinning module include a tin pot and a scraping rod. The scraping rod is controlled by a horizontal and lifting movement assembly and is used to scrape the oxide layer on the surface of the tin liquid.

[0024] Preferred technical solution: The suction nozzle bin module is provided with a locking mechanism for fixing negative pressure suction nozzles of different specifications, and is used to cooperate with the mimetic transplanting module to realize automatic replacement of negative pressure suction nozzles of different specifications.

[0025] Preferred technical solution: The re-inspection module includes a detection camera and a supplementary light lamp arranged upward along the Z-axis direction, and is used to perform surface quality re-inspection on the finished workpieces.

[0026] The present invention also discloses a usage method of the above-mentioned new tinning machine, including the following steps: Data import: Import the three-dimensional model of the workpiece into the vision detection camera, and establish a feature point recognition model through a deep learning algorithm; Path learning: The mimetic transplanting module records the grasping, tin dipping, and obstacle avoidance trajectories through manual teaching to generate a mimetic transplanting path; Processing operation: S1. Mix the workpieces in the cells of the loading tray, and turn on the flat light source to form uniform backlighting; S2. The vision detection camera scans the loading tray through the XY linear motion mechanism to identify the types, sizes, and positioning coordinates of the workpieces; S3. Call the locking mechanism of the suction nozzle bin module according to the workpiece type to replace the suitable negative pressure suction nozzle; S4. The mimetic transplanting module grabs the workpieces according to the path, calls the corresponding process parameters according to the workpiece type, and controls the flux coating module, gold removal module, hot air knife module, tinning module, and re-inspection module to cooperate with the mimetic transplanting module to complete gold removal, heating, tinning, and re-inspection Due to the application of the above technical solutions, the beneficial effects of the present invention compared with the prior art are: (1)The transparent loading tray combines with a vision system using deep learning algorithms for identification and positioning, allowing for the mixed loading of workpieces of different specifications without manual sorting, thus realizing the automated processing of small-batch and multi-variety workpieces.

[0027] (2)The mimetic transplant module utilizes a multi-degree-of-freedom motion design to generate a motion trajectory through teaching learning, and combines with visual positioning to perfectly replicate the soldering skills of senior soldering technicians, improving the efficiency and quality of soldering.

[0028] (3)The multi-module integrated design reduces the space occupied by the equipment, while reducing the moving distance of the workpieces during processing, improving the processing efficiency and facilitating the maintenance of the equipment.

[0029] (4)From workpiece identification, grasping, flux coating, gold removal, soldering to re-inspection, the whole process requires no manual intervention, reducing manpower dependence and improving operation accuracy.

[0030] (5)The re-inspection module automatically detects the surface quality of the soldering, rejects defective products, and realizes closed-loop quality management. Description of the Drawings

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is the external view schematic diagram of a new type of soldering machine of the present invention; Figure 2 It is the layout schematic diagram of a new type of soldering machine of the present invention; Figure 3 It is the structural schematic diagram of the mimetic transplant module in the present invention; Figure 4 It is the structural schematic diagram of the visual loading module in the present invention; Figure 5 It is the structural schematic diagram of the soldering module in the present invention.

[0033] In the above drawings, 100 is the operation platform; 1 is the mimic transplanting module; 11 is the X-direction linear motion module; 12 is the Y-direction linear motion module; 13 is the Z-direction linear motion module; 14 is the first motor; 15 is the first reducer; 16 is the second motor; 17 is the negative pressure nozzle mounting seat; 2 is the vision feeding module; 21 is the mounting plate; 22 is the feeding tray; 22a is the cell; 23 is the flat light source; 24 is the XY linear motion mechanism; 25 is the vision inspection camera; 26 is the defective product collection tank; 27 is the finished product placement tray; 3 is the flux coating module; 4 is the gold removal module; 5 is the hot air knife module; 6 is the tinning module; 7 is the nozzle magazine module; 8 is the re-inspection module; 9 is the negative pressure nozzle. Detailed implementation manners

[0034] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0035] It should be noted that the terms "first", "second", etc. in the specification, claims and above drawings of this application are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "comprising" and "having" and their synonyms are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0036] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0037] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the terms "installed", "set up", "equipped with", "connected", "linked", "socketed", and "fitted" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal communication between two devices, components, or parts. Another example is that "fitted" can be a complete tight fit or a partial tight fit. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] It should be noted that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other. The following will describe this application in detail with reference to the drawings and in conjunction with the embodiments.

[0040] Embodiment: As Figure 1 and Figure 2 shown, the present invention discloses a new type of tinning machine, which includes an operation platform 100. An imitating transplanting module 1, a vision loading module 2, a flux coating module 3, a de-gold module 4, a hot air knife module 5, a tinning module 6, a nozzle bin module 7, and a re-inspection module 8 are integrated on the operation platform 100. The following will specifically describe the main components of the above present invention: As Figure 1 、 Figure 2 and Figure 3 shown, the imitating transplanting module 1 is responsible for grasping and operation movement of the workpiece. Its specific structure includes: An XYZ linear motion mechanism, which is orthogonally connected in sequence by an X-direction linear motion module 11, a Y-direction linear motion module 12, and a Z-direction linear motion module 13 to provide three-dimensional translation degrees of freedom, ensuring that the negative pressure suction nozzle 9 can be accurately positioned in three-dimensional space.

[0041] A first motor 14, fixed at the end of the XYZ linear motion mechanism, and the direction of its rotating shaft is parallel to one of the X-direction linear motion module 11 and the Y-direction linear motion module 12; a first reduction gear 15, with its input end connected to the output end of the first motor 14; a second motor 16, fixed at the end of the first reduction gear 15, and the direction of its rotating shaft is perpendicular to the direction of the rotating shaft of the first motor 14; providing mutually perpendicular rotational degrees of freedom for the negative pressure suction nozzle 9 to ensure that the workpiece can be stably grasped and operationally moved.

[0042] A negative pressure suction nozzle mounting seat 17, fixed at the end of the second motor 16, is provided with a pressure sensor thereon and is detachably connected to the negative pressure suction nozzle 9. Through the connection of the pressure sensor and the negative pressure suction nozzle 9, it is ensured that the grasping force is appropriate to avoid damaging the workpiece.

[0043] As Figure 1 、 Figure 2 andFigure 4 As shown in the figure, the visual loading module 2 is used to identify the feature points and positioning coordinates of the workpiece to ensure accurate loading of the workpiece. Its specific structure includes: A mounting plate 21, fixed on the working platform 100.

[0044] A loading tray 22, made of transparent material, is arranged on the mounting plate 21. The surface of the loading tray 22 is divided into a plurality of cells 22a in the X-axis and Y-axis directions, which is convenient for the mixed loading and positioning of workpieces.

[0045] A flat panel light source 23 is arranged parallel to the upper part of the loading tray 22 to provide uniform backlight, which is convenient for the vision inspection camera 25 to identify the feature points of the workpiece.

[0046] An XY linear motion mechanism 24 is arranged under the loading tray 22 to drive the vision inspection camera 25 for positioning movement.

[0047] The vision inspection camera 25 is connected to the end of the XY linear motion mechanism 24. The axis of the lens is perpendicular to the loading tray 22, and it is equipped with a deep learning algorithm to identify the contour and size of the workpiece and generate positioning coordinates, ensuring accurate loading of the workpiece and providing support for the selection of process parameters of the mimicry transplanting module 1, the solder paste coating module 3, the gold removal module 4, the hot air knife module 5, the tinning module 6, the nozzle magazine module 7 and the re-inspection module 8.

[0048] As Figure 1 and Figure 2 shown, the solder paste coating module 3 coats the solder paste on the surface of the workpiece to prepare for the subsequent tinning process.

[0049] As Figure 1 and Figure 2 shown, the gold removal module 4 uses the gold removal tin pot in the gold removal module 4 to perform gold removal operations on the workpiece to reduce the gold plating content of the workpiece.

[0050] As Figure 1 and Figure 2 shown, the hot air knife module 5 heats the workpiece through hot air, and the temperature and wind speed can be adjusted independently to ensure that the surface of the workpiece reaches an appropriate temperature. At the same time, it can be used for the hot melting cleaning of impurities on the surface of the workpiece.

[0051] As Figure 1 , Figure 2 and Figure 5 shown, the tinning module 6 immerses the workpiece in the tin pot for tinning treatment to ensure that the surface of the workpiece is evenly covered with a tin layer.

[0052] As Figure 1 , Figure 2 and Figure 3 shown, the nozzle magazine module 7 is provided with a locking mechanism for fixing negative pressure nozzles 9 of different specifications to meet the grasping requirements of different workpieces.

[0053] As Figure 1 and Figure 2 shown, the re-inspection module 8 reinspects the tinned workpieces through the inspection camera and fill light arranged upward along the Z-axis direction to ensure qualified quality.

[0054] As Figure 1 、 Figure 2 and Figure 4 shown, further, a non-conforming product collection groove 26 and a finished product placement tray 27 are also provided on the mounting plate 21.

[0055] As Figure 1 、 Figure 2 and Figure 3 shown, further, the second motor 16 is a hollow motor, the rotating shaft of the second motor 16 is a hollow shaft, and the front and rear ends of the hollow shaft are respectively connected to the vacuum pumping pipeline and the negative pressure suction nozzle mounting seat 17 to provide a vacuum pumping channel for the negative pressure suction nozzle mounting seat 17 to realize the adsorption function of the negative pressure suction nozzle 9.

[0056] As Figure 1 、 Figure 2 and Figure 3 shown, a second speed reducer is also provided between the second motor 16 and the negative pressure suction nozzle mounting seat 17, and the second speed reducer is a hollow speed reducer to improve the stability when the negative pressure suction nozzle 9 rotates.

[0057] As Figure 1 、 Figure 2 and Figure 5 shown, the gold removal module 4 and the tinning module 6 both include a tin pot and a scraping rod. The scraping rod is controlled by a horizontal and lifting movement component. The oxide layer on the surface of the tin liquid in the tin pot is scraped off by the translation of the scraping rod, and the one-way scraping operation of the oxide layer on the surface of the tin liquid is realized by the lifting of the scraping rod.

[0058] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the usage method of the above new tinning machine includes the following steps: Data import: Import the three-dimensional model of the workpiece into the vision inspection camera 25, and establish a feature point recognition model through a deep learning algorithm; Path learning: The operator manually teaches the movement trajectory of the mimicry transplant module 1, and the central controller records the trajectory points and generates a smooth movement path; Processing operation: S1. Randomly place workpieces of different specifications in the cells 22a of the loading tray 22, and turn on the flat light source 23 to form uniform backlighting; S2. The vision detection camera 25 scans the loading tray 22 through the XY linear motion mechanism 24, identifies the types, sizes, and positioning coordinates of the workpieces, and marks the unqualified products and moves them to the collection tank 26 through the mimicry transplant module 1.

[0059] S3. Call the locking mechanism of the nozzle bin module 7 according to the type of the workpiece, and replace the adapted negative pressure nozzle 9. S4. The mimicry transplant module 1 grabs the workpiece according to the path, calls the corresponding process parameters according to the type of the workpiece, and controls the flux coating module 3, the gold removal module 4, the hot air knife module 5, the tinning module 6, and the re-inspection module 8 to cooperate with the mimicry transplant module 1 to complete gold removal, heating, tinning, and re-inspection.

[0060] The new tinning machine provided by the present invention realizes high-efficiency, high-precision, and high-flexibility processing capabilities through the technical integration of automation, intelligence, and modularization. It is especially suitable for the flexible production requirements of multiple varieties and small batches in the field of electronic manufacturing, and at the same time significantly reduces the comprehensive cost. It is an innovative upgrade solution for the traditional tinning process.

[0061] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel tinning machine, comprising a working platform (100), characterized in that: The operation platform (100) is integrated with a mimic transplanting module (1), a visual feeding module (2), a flux coating module (3), a gold removal module (4), a hot air knife module (5), a tinning module (6), a nozzle bin module (7) and a re-inspection module (8); The mimic transplanting module (1) comprises: An XYZ linear motion mechanism, comprising an X-direction linear motion module (11), a Y-direction linear motion module (12) and a Z-direction linear motion module (13) which are orthogonally connected in sequence to provide three-dimensional translational freedom; A first motor (14) is fixed to the end of the XYZ linear motion mechanism, and the direction of its rotation axis is parallel to one of the X-direction linear motion module (11) and the Y-direction linear motion module (12); A first reducer (15), an input end of which is connected to an output end of the first motor (14); A second motor (16) is fixed to the end of the first reducer (15), and the direction of its rotation axis is perpendicular to the direction of the rotation axis of the first motor (14); The negative pressure suction nozzle mounting seat (17) is fixed to the end of the second motor (16), is provided with a pressure sensor, and is detachably connected to the negative pressure suction nozzle (9).

2. A novel tinning machine according to claim 1, characterized in that: The visual loading module (2) comprises: A mounting plate (21) fixed on the working platform (100); A loading tray (22) is made of a transparent material and is disposed on the mounting plate (21), and its surface is divided into a plurality of cells (22a) in an array along the X-axis and Y-axis directions; A flat light source (23) is arranged parallel to and above the loading tray (22); An XY linear motion mechanism (24) is disposed below the loading tray (22); A visual inspection camera (25) is connected to the end of the XY linear motion mechanism (24), with the lens axis being perpendicular to the loading tray (22) and equipped with a deep learning algorithm for identifying feature points of a workpiece and generating positioning coordinates.

3. A novel tinning machine according to claim 2, characterized in that: The mounting plate (21) is also provided with a defective product collecting trough (26) and a finished product placement tray (27).

4. A novel tinning machine according to claim 3, characterized in that: The second motor (16) is a hollow motor, the rotating shaft of the second motor (16) is a hollow shaft, and the front and rear ends of the hollow shaft are respectively connected to the vacuum pipe and the negative pressure nozzle mounting seat (17).

5. A novel tinning machine according to claim 4, characterized in that: A second reducer is also provided between the second motor (16) and the negative pressure nozzle mounting seat (17), and the second reducer is a hollow reducer.

6. A novel tinning machine according to claim 5, characterized in that: The temperature and wind speed of the hot air knife module (5) can be adjusted independently.

7. A novel tinning machine according to claim 6, characterized in that: The gold removal module (4) and the tinning module (6) both comprise a tin pot and a scraper rod, and the scraper rod is controlled by a horizontal and lifting moving assembly.

8. A novel tinning machine according to claim 7, characterized in that: The nozzle bin module (7) is provided with a locking mechanism for fixing negative pressure nozzles (9) of different specifications.

9. A novel tinning machine according to claim 8, characterized in that: The re-inspection module (8) comprises a detection camera and a fill light which are arranged upward along the Z-axis direction.

10. The method for using the novel tinning machine according to claim 9 is characterized in that The following steps are involved: Data import: import the three-dimensional model of the workpiece into the visual inspection camera (25), and establish a feature point recognition model through a deep learning algorithm; Path learning: The mimic transplanting module (1) records the grasping, tinning, and obstacle avoidance trajectories through manual teaching to generate a mimic transplanting path; Processing operations: S1, mixing the workpieces into the cells (22a) of the loading tray (22), and turning on the flat light source (23) to form a uniform backlight; S2, the visual inspection camera (25) scans the loading tray (22) through the XY linear motion mechanism (24) to identify the type, size and positioning coordinates of the workpiece; S3, calling the locking mechanism of the nozzle bin module (7) according to the type of workpiece, and replacing an appropriate negative pressure nozzle (9); S4, the mimic transplanting module (1) grabs the workpiece according to the path, calls the corresponding process parameters according to the type of the workpiece, controls the flux coating module (3), the gold removal module (4), the hot air knife module (5), the tinning module (6) and the re-inspection module (8) to cooperate with the mimic transplanting module (1) to complete gold removal, heating, tinning and re-inspection.

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