Tin pan anti-oxidation system

Abstract

A tin pot anti-oxidation system comprises a tin pot body, a tin pump assembly, a tin liquid circulation channel, a slag scraping mechanism and a nitrogen protection unit. A heating device and a detachable cover plate are arranged in the tin pot body, and the tin pump assembly is used for pumping tin liquid and conveying the tin liquid to the wide-opening nozzle. The tin liquid circulation channel penetrates through the cover plate and is internally provided with a wide-opening nozzle, and the slag scraping mechanism drives a scraping rod to remove oxide on the surface of the wide-opening nozzle through a horizontal translation device. The nitrogen protection unit comprises a preheating plate, nitrogen is introduced into a gas channel of the preheating plate, a nitrogen protection layer is formed in an inner cavity of the tin pot body, and tin liquid is prevented from being oxidized. Through the synergistic effect of tin liquid circulation, nitrogen protection and the slag scraping mechanism, the contact between tin liquid and air is effectively reduced, oxidation is prevented, the purity and stability of the tin liquid are ensured, and meanwhile the operability and maintainability of the system are optimized.

Description

Technical Field

[0001] This utility model relates to the field of soldering equipment technology, and in particular to a solder pot anti-oxidation system. Background Technology

[0002] In processes such as electronic soldering and tin plating, tin pots are used to melt and store molten solder. Because molten solder readily reacts with oxygen in the air at high temperatures to form oxides, the quality of the solder deteriorates, affecting the soldering or tin plating results. Traditional methods for preventing oxidation in tin pots typically involve using covering agents or inert gas protection, but these methods suffer from inconsistent effectiveness and complex operation.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a tin pot anti-oxidation system to solve the above problems.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and facilitating the understanding of those skilled in the art. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0005] To overcome the shortcomings of the prior art, the present invention discloses a tin pot anti-oxidation system, which effectively prevents tin oxidation and improves the efficiency and quality of tin use through the synergistic effect of tin liquid circulation, nitrogen protection and slag scraping mechanism.

[0006] This utility model discloses a tin pot anti-oxidation system, comprising:

[0007] The solder pot body has a heating device at the bottom of its inner cavity to heat and maintain the temperature of the molten solder; a removable cover plate at the top for easy maintenance and cleaning; a molten solder circulation channel runs through the top of the cover plate, serving as a channel for external molten solder to enter the inner cavity of the solder pot body; a wide-mouth nozzle is installed in the molten solder circulation channel; the top opening of the wide-mouth nozzle is designed with one side low as an overflow port, which controls excess molten solder in the wide-mouth nozzle to flow into the molten solder circulation channel from one direction; at least one porous buffer plate is installed inside the wide-mouth nozzle to buffer the molten solder delivered by the solder pump assembly, keeping the liquid level in the wide-mouth nozzle stable.

[0008] The solder pump assembly is mounted on the cover plate, with its inlet end extending into the inner cavity of the solder pot body for drawing molten solder and delivering it to the wide-mouth nozzle; its outlet end is connected to the lower end of the wide-mouth nozzle 5 through a liquid delivery pipe 31.

[0009] The slag scraping mechanism includes a horizontal translation device located on one side of the tin pot body. The output end of the horizontal translation device is equipped with a scraper rod, which is suspended horizontally above the wide-mouth nozzle to remove oxides from the surface of the wide-mouth nozzle.

[0010] The nitrogen protection unit includes a preheating plate located at the lower end of the cover plate. The lower end of the preheating plate is below the standard liquid level of the molten solder in the solder pot. The preheating plate has a gas passage, the inlet of which is connected to a nitrogen inlet pipe, and the outlet of which is above the standard liquid level of the molten solder in the solder pot. Nitrogen enters the gas passage through the nitrogen inlet pipe and exits through the outlet, forming a nitrogen protective layer to prevent the molten solder from contacting air.

[0011] Preferred technical solution: The tin pump assembly is equipped with a waterfall pump, and the delivery impeller of the waterfall pump is located at the inlet end of the tin pump assembly to ensure sufficient supply of molten tin.

[0012] Preferred technical solution: The liquid delivery pipe has a curved structure; the wide-mouth nozzle is equipped with at least two layers of porous buffer plates to provide multiple buffers for the molten tin entering the wide-mouth nozzle, ensuring the stability of the molten tin surface inside the wide-mouth nozzle.

[0013] Preferred technical solution: The opening direction of the overflow port is consistent with the movement direction of the scraper, which facilitates the discharge of oxides.

[0014] Preferred technical solution: The scraper is rotatably connected to the output end of the horizontal translation device to avoid the scraper being obstructed due to scraping and to improve the slag removal effect.

[0015] Preferred technical solution: A baffle is provided on the side of the molten solder circulation channel corresponding to the horizontal translation device. The baffle is slidably connected to the side wall of the molten solder circulation channel along the movement direction of the horizontal translation device. The scraper passes through the baffle and is movably connected to it to prevent molten solder from splashing out.

[0016] Preferred technical solution: The number of preheating plates is two or more, and the exhaust port of the gas passage is set towards the inside of the tin pot body to enhance the nitrogen protection effect.

[0017] Preferred technical solution: The top of the molten tin circulation channel is provided with a protective cover, and the protective cover and the wide-mouth nozzle are provided with a hollowed-out processing avoidance hole to facilitate operation and maintenance.

[0018] Preferred technical solution: The horizontal translation device is driven by any one of a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

[0019] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0020] This invention discloses a solder pot anti-oxidation system. The design of a porous buffer plate and a waterfall pump ensures stable solder surface and reduces fluctuations. A wide-mouth nozzle with an overflow port, combined with a solder circulation channel, keeps the solder constantly circulating, reducing the possibility of oxide accumulation. Through solder circulation and nitrogen protection, the contact between the solder and air is reduced, while the slag scraping mechanism promptly removes oxides from the solder surface, ensuring the purity and stability of the solder. A preheating plate is immersed in the solder, and the exhaust port of the air passage is located above the liquid surface. Nitrogen is released after preheating, preventing temperature fluctuations caused by cold nitrogen and reducing nitrogen consumption. The scraper and horizontal translation device are rotatably connected, and with the directional opening of the drain trough, continuous scraping-guiding-collection operation is achieved. A baffle plate and the solder circulation channel are slidably connected to form a dynamic sealing system, preventing secondary contamination during slag scraping. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the internal structure of a tin pot anti-oxidation system according to the present invention;

[0023] Figure 2 for Figure 1 A magnified view of a portion of point B in the middle;

[0024] Figure 3 This is a top view of a tin pot anti-oxidation system according to the present invention;

[0025] Figure 4 For along Figure 3 A cross-sectional view taken by line AA in the middle;

[0026] Figure 5 This is an exploded view of the preheating plate in this utility model.

[0027] In the attached diagrams above, 1 is the solder pot body; 11 is the heating device; 2 is the cover plate; 3 is the solder pump assembly; 31 is the liquid delivery pipe; 4 is the solder liquid circulation channel; 41 is the baffle; 42 is the protective cover; 42a is the machining clearance hole; 5 is the wide-mouth nozzle; 51 is the overflow port; 52 is the porous buffer plate; 6 is the horizontal translation device; 7 is the scraper; 8 is the preheating plate; 81 is the gas passage; and 9 is the nitrogen inlet pipe. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the description of embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0032] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" 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 connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Example:

[0035] like Figure 1 and Figure 4 As shown, this utility model discloses a solder pot anti-oxidation system, including a solder pot body 1, a solder pump assembly 3, a solder liquid circulation channel 4, a slag scraping mechanism, and a nitrogen protection unit. The main components of this utility model will be described in detail below:

[0036] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the tin pot body 1 has a heating device 11 at the bottom of its inner cavity for heating the molten tin to a molten state and maintaining a constant temperature; a removable cover plate 2 is provided at the top; a molten tin circulation channel 4 is provided through the top of the cover plate 2, and a wide-mouth nozzle 5 is provided in the molten tin circulation channel 4. The top opening of the wide-mouth nozzle 5 is designed with one side low as an overflow port 51. Excess molten tin in the wide-mouth nozzle 5 is directed to flow into the molten tin circulation channel 4 from the overflow port 51, and finally flows back to the inner cavity of the tin pot body 1 through the molten tin circulation channel 4 to form a circulation, ensuring that the temperature of the molten tin is evenly distributed and avoiding the accumulation of oxides in the wide-mouth nozzle 5; two layers of porous buffer plates 52 are arranged in parallel inside the wide-mouth nozzle 5. It should be noted that in this embodiment, the porous buffer plates 52 are arranged in parallel, but in other embodiments they can also be arranged at an angle.

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the solder pump assembly 3 is installed on the cover plate 2, and its inlet end extends into the inner cavity of the solder pot body 1 for drawing molten solder from the inner cavity of the solder pot body 1. The outlet end of the solder pump assembly 3 is connected to the lower end of the wide-mouth nozzle 5 through the liquid delivery pipe 31 for delivering the drawn molten solder to the wide-mouth nozzle 5. The liquid delivery pipe 31 has a curved structure to make the delivery of molten solder more stable.

[0038] like Figure 1 , Figure 2 and Figure 4 As shown, the slag scraping mechanism includes a horizontal translation device 6 disposed on one side of the tin pot body 1. The output end of the horizontal translation device 6 is provided with a scraper 7. The scraper 7 is suspended in the horizontal direction above the wide-mouth nozzle 5 to remove oxides from the surface of the wide-mouth nozzle 5. The movement direction of the scraper 7 is consistent with the opening direction of the overflow port 51, which promotes the separation and removal of oxides.

[0039] like Figure 1 , Figure 4 and Figure 5As shown, the nitrogen protection unit includes a preheating plate 8 located at the lower end of the cover plate 2. The lower end of the preheating plate 8 is below the standard liquid level of the molten solder in the tin pot body 1. The preheating plate 8 is provided with a gas passage 81. The air inlet of the gas passage 81 is connected to the nitrogen inlet pipe 9. The exhaust port of the gas passage 81 is above the standard liquid level of the molten solder in the tin pot body 1. The heat of the molten solder is used to preheat the nitrogen, forming a uniform nitrogen protection layer to prevent the molten solder from oxidizing.

[0040] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the usage method and principle of this utility model are described below:

[0041] The heating device 11 is activated to heat the molten tin in the tin pot body 1 to a molten state and maintain a constant temperature.

[0042] The solder pump assembly 3 is activated, drawing molten solder from the solder pot body 1 and sending it into the wide-mouth nozzle 5 through the liquid delivery pipe 31.

[0043] As the molten tin flows into the wide-mouth nozzle 5, it is buffered by the curved liquid delivery pipe 31 and the porous buffer plate 52, so that the liquid level of the molten tin in the wide-mouth nozzle 5 remains stable. After the molten tin in the wide-mouth nozzle 5 is full, it overflows through the overflow port 51 into the molten tin circulation channel 4, and flows into the inner cavity of the molten tin pot body 1 through the molten tin circulation channel 4, forming a circulation flow.

[0044] The horizontal translation device 6 drives the scraper 7 to move horizontally, scraping off oxides and impurities from the surface of the molten tin inside the wide-mouth nozzle 5.

[0045] The nitrogen protection unit delivers nitrogen to the surface of the molten solder through the gas passage 81 in the preheating plate 8, forming a protective layer above the molten solder. Since the preheating plate 8 is partially located below the surface of the molten solder, the nitrogen is preheated during delivery. The preheated nitrogen has improved diffusivity and can form a more stable protective layer to prevent oxidation of the molten solder.

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the tin pump assembly 3 further includes a waterfall pump 32, and the conveying impeller of the waterfall pump 32 is located at the inlet end of the tin pump assembly 3 to ensure the stability of the molten tin conveying volume.

[0047] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the scraper 7 is further rotatably connected to the output end of the horizontal translation device 6 to prevent the scraper 7 from being obstructed due to scraping.

[0048] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, further, a baffle 41 is provided on the side of the molten tin circulation channel 4 corresponding to the horizontal translation device 6. The baffle 41 is slidably connected to the side wall of the molten tin circulation channel 4 along the movement direction of the horizontal translation device 6. The scraper 7 passes through the baffle 41 and is movably connected to it, ensuring that the baffle 41 can move with the scraper 7 during the slag scraping process.

[0049] like Figure 1 , Figure 4 and Figure 5 As shown, the number of preheating plates 8 is two or more, and the exhaust port of the gas passage 81 is set towards the inside of the tin pot body 1 to improve the uniformity of nitrogen forming a protective layer.

[0050] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the top of the molten tin circulation channel 4 is further provided with a protective cover 42. The protective cover 42 and the wide-mouth nozzle 5 are provided with a hollowed-out processing clearance hole 42a, which facilitates operation and maintenance.

[0051] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the horizontal translation device 6 is further driven by any of a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

[0052] This invention effectively prevents molten solder oxidation and ensures its quality and stability through multiple measures, including molten solder circulation, slag scraping, and nitrogen protection. The slag scraping mechanism employs a horizontal translation device and a rotating scraper rod, avoiding movement obstruction caused by scraping and improving scraping efficiency. The nitrogen protection unit evenly distributes nitrogen through a preheating plate, forming a stable protective layer to further reduce molten solder oxidation. The system has a simple structure, is easy to maintain, and is suitable for anti-oxidation treatment of molten solder pots in industrial production.

[0053] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tin pot anti-oxidation system characterized by, The application relates to a tin pot body (1) which is internally provided with a heating device (11) at the bottom and a detachable cover plate (2) at the top, the top of the cover plate (2) is provided with a tin liquid circulation channel (4) which is internally provided with a wide-mouth nozzle (5), the top end of the wide-mouth nozzle (5) is designed to be low on one side to serve as an overflow port (51), and the wide-mouth nozzle (5) is internally provided with at least one layer of porous buffer plates (52); a tin pump assembly (3) is installed on the cover plate (2) and extends to the inner cavity of the tin pot body (1) at the inlet end; the outlet end is communicated with the lower end of the wide-mouth nozzle (5) through a liquid conveying pipeline (31); a slag scraping mechanism is arranged on one side of the tin pot body (1) and comprises a horizontal translation device (6) which is provided with a scraping rod (7) at the output end, and the scraping rod (7) is suspended above the wide-mouth nozzle (5) in the horizontal direction; a nitrogen protection unit is arranged at the lower end of the cover plate (2) and comprises a preheating plate (8) which is below the standard liquid level of the tin liquid in the tin pot body (1), the preheating plate (8) is internally provided with a gas path channel (81), the gas inlet of the gas path channel (81) is communicated with a nitrogen inlet pipe (9), and the gas outlet of the gas path channel (81) is above the standard liquid level of the tin liquid in the tin pot body (1). The tin pump assembly (3) is internally provided with a waterfall pump (32), and the conveying impeller of the waterfall pump (32) is arranged at the inlet end of the tin pump assembly (3). The liquid conveying pipeline (31) is of a curved structure, and the wide-mouth nozzle (5) is internally provided with at least two layers of the porous buffer plates (52). The opening direction of the overflow port (51) is consistent with the movement direction of the scraping rod (7). The scraping rod (7) is rotationally connected to the output end of the horizontal translation device (6). The side of the tin liquid circulation channel (4) corresponding to the horizontal translation device (6) is provided with a baffle (41) which is slidingly connected with the side wall of the tin liquid circulation channel (4) along the movement direction of the horizontal translation device (6), and the scraping rod (7) penetrates through the baffle (41) and is movably connected with the baffle (41).

2. The tin pot oxidation prevention system of claim 1, wherein: The number of the preheating plates (8) is two or more, and the gas outlet of the gas path channel (81) is arranged towards the inner side of the tin pot body (1).

3. The tin pot oxidation prevention system of claim 1, wherein: The top of the tin liquid circulation channel (4) is provided with a protective cover (42), and the protective cover (42) is provided with a processing avoidance hole (42a) of a hollow structure at the corresponding position of the wide-mouth nozzle (5).

4. The tin pot oxidation prevention system of claim 1, wherein: The horizontal translation device (6) is driven by any one of a pneumatic cylinder, an electric cylinder and an oil cylinder.

5. The tin pot oxidation prevention system of claim 1, wherein: ​ 6. The tin pot oxidation prevention system of claim 5, wherein: ​ 7. The tin pot oxidation prevention system of claim 1, wherein: ​ 8. The tin pot oxidation prevention system of claim 1, wherein: ​ 9. The tin pot oxidation prevention system of claim 1, wherein: ​

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