Anti-oxidation structure and wave soldering device

Abstract

The utility model relates to the technical field of welding equipment, in particular to an anti-oxidation structure and a wave soldering device. The anti-oxidation structure is suitable for being installed on the wave soldering device and comprises an anti-oxidation cover and a fixing piece, and an anti-oxidation cavity is formed in the anti-oxidation cover so that a transmission assembly of the wave soldering device can be located in the anti-oxidation cavity; the anti-oxidation cover is connected with the fixing piece and can vertically move relative to the fixing piece so as to adjust the height of the lower end of the anti-oxidation cover relative to the tin material liquid level. The anti-oxidation structure provided by the utility model is used for overcoming the defects of high solder consumption and low production efficiency caused by the fact that a wave soldering device in the prior art needs to add solder frequently, the height of the lower end of the anti-oxidation cover is freely adjusted and is kept below the liquid level of liquid tin, and frequent feeding is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to an anti-oxidation structure and a wave soldering device. Background Art

[0002] A wave soldering device is a device used to perform the wave soldering process. During the wave soldering process, solder (usually a tin alloy) is heated to a molten state for component soldering.

[0003] The wave soldering device usually uses an anti-oxidation cover to protect the molten tin during soldering from oxidation. During the use of the anti-oxidation cover, since the liquid level of the molten tin will continuously drop, when the liquid level of the molten tin drops below the height of the lower end of the anti-oxidation cover, air will enter the inside of the anti-oxidation cover and contact with the molten tin to oxidize, forming tin dross. In the prior art, usually, the way of adding solder is adopted to make the liquid level of the molten tin higher than the lower end of the anti-oxidation cover. However, frequently adding new molten tin will increase the consumption of solder, thus increasing costs and wasting resources, and affecting the welding efficiency and production efficiency. Summary of the Utility Model

[0004] The utility model provides an anti-oxidation structure to solve the defects of large solder consumption and low production efficiency existing in the need for frequent solder addition in the wave soldering device in the prior art, and realizes the free adjustment of the height of the lower end of the anti-oxidation cover and keeps it below the liquid level of the molten tin without frequent feeding.

[0005] On the one hand, the utility model provides an anti-oxidation structure suitable for being installed on a wave soldering device, including:

[0006] An anti-oxidation cover, an anti-oxidation cavity is formed inside the anti-oxidation cover, so that the transmission bearing of the wave soldering device is located inside the anti-oxidation cavity;

[0007] A fixing member, the anti-oxidation cover is connected to the fixing member, and the anti-oxidation cover can move vertically relative to the fixing member to adjust the height of the lower end of the anti-oxidation cover relative to the liquid level of the solder.

[0008] According to the anti-oxidation structure provided by the utility model, the fixing member is threadedly connected to the anti-oxidation cover to adjust the height of the lower end of the anti-oxidation cover when the anti-oxidation cover is rotated.

[0009] According to the anti-oxidation structure provided by the utility model, one end of the anti-oxidation cover is provided with a first threaded section, and one end of the fixing member is provided with a second threaded section, and the first threaded section is in threaded cooperation with the second threaded section.

[0010] According to the anti-oxidation structure provided by the utility model, a limiting portion is provided on the anti-oxidation cover, and the limiting portion is suitable for restricting the anti-oxidation cover from rotating along its own axis.

[0011] According to the anti-oxidation structure provided by the present utility model, the anti-oxidation cover is slidably connected to the fixing member in the vertical direction.

[0012] According to the anti-oxidation structure provided by the present utility model, the anti-oxidation cover is sleeved on the fixing member, and a sealing mechanism is provided between the anti-oxidation cover and the fixing member.

[0013] According to the anti-oxidation structure provided by the present utility model, the sealing mechanism includes a sealing groove and a sealing ring. The sealing groove is provided on the fixing member or the anti-oxidation cover, and the sealing ring is provided in the sealing groove.

[0014] According to the anti-oxidation structure provided by the present utility model, a limiting mechanism is further included, and the limiting mechanism is adapted to limit the vertical movement of the anti-oxidation cover.

[0015] According to the anti-oxidation structure provided by the present utility model, a connection cavity adapted to communicate with the anti-oxidation gas source is formed in the fixing member, and the connection cavity is communicated with the anti-oxidation cavity.

[0016] According to the anti-oxidation structure provided by the present utility model, an air inlet member adapted to introduce anti-oxidation gas is further included. The air inlet member is provided on the fixing member, and the air inlet member is communicated with the connection cavity.

[0017] On the other hand, the present utility model provides a wave soldering device, including:

[0018] A solder pot;

[0019] A support frame, the support frame is connected to the solder pot;

[0020] A driving device, the driving device is provided on the support frame, and a transmission bearing is provided at the output end of the driving device;

[0021] The anti-oxidation structure as described above, the fixing member is connected to the support frame, and the transmission bearing is located in the anti-oxidation cavity.

[0022] For the anti-oxidation structure and the wave soldering device provided by the present utility model, the anti-oxidation cover can move vertically relative to the fixing member, and the position of the lower end of the anti-oxidation cover relative to the liquid surface of the molten tin in the solder pot can be adjusted according to the liquid level height of the molten tin in the solder pot, so that the lower end of the anti-oxidation cover is always below the liquid surface of the solder, which can effectively prevent air from entering the anti-oxidation cavity, and there is no need to frequently add solder. The present utility model solves the defects of large solder consumption and low production efficiency existing in the prior art that the wave soldering device needs to frequently add solder, realizes the free adjustment of the height of the lower end of the anti-oxidation cover and keeps it below the liquid surface of the molten tin, and there is no need to frequently add materials.

[0023] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 FIG. 9 is one of the schematic diagrams of the anti-oxidation structure provided by the embodiment of the present utility model;

[0026] Figure 2 FIG. 13 is a schematic diagram of the anti-oxidation cover in the anti-oxidation structure provided by the embodiment of the present utility model;

[0027] Figure 3 FIG. 17 is a schematic diagram of the fixing member in the anti-oxidation structure provided by the embodiment of the present utility model;

[0028] Figure 4 FIG. 21 is a schematic diagram of the wave soldering device provided by the embodiment of the present utility model.

[0029] REFERENCE NUMERALS:

[0030] 10, anti-oxidation structure; 110, anti-oxidation cover; 111, first threaded section; 112, limiting portion; 120, fixing member; 121, second threaded section; 130, air inlet member;

[0031] 20, tin furnace; 30, support frame; 40, driving device; 50, transmission bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model in conjunction with the drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0033] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0035] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0037] The following is combined with Figures 1 to 4 to describe the anti-oxidation structure and wave soldering device provided by the present utility model.

[0038] It should be noted that the anti-oxidation structure 10 provided by the present utility model is suitable for being installed on a wave soldering device to prevent the liquid tin from contacting the air and generating tin dross from entering the transmission bearing 50 at the output end of the driving device 40, causing damage to the transmission bearing 50.

[0039] See Figures 1 to 3 As shown, the anti-oxidation structure 10 provided by the present utility model includes an anti-oxidation cover 110 and a fixing member 120. An anti-oxidation cavity is formed inside the anti-oxidation cover 110 so that the transmission bearing 50 of the wave soldering device is located inside the anti-oxidation cavity; the anti-oxidation cover 110 is connected to the fixing member 120, and the anti-oxidation cover 110 can move vertically relative to the fixing member 120 to adjust the height of the lower end of the anti-oxidation cover 110 relative to the liquid surface of the solder.

[0040] It should be noted that the transmission assembly includes a transmission bearing 50 and a transmission shaft. During the continuous rotation of the transmission shaft to stir the solder, since the solder contacts the air, it is easy to react with oxygen in the air and be oxidized to form elemental tin, and the tin dross is easy to climb upward along the transmission shaft and then enter the transmission bearing 50, resulting in the jamming and damage of the transmission bearing 50.

[0041] For the anti-oxidation structure 10 and the wave soldering device provided by the present utility model, the anti-oxidation cover 110 can move vertically relative to the fixing member 120, and the position of the lower end of the anti-oxidation cover 110 relative to the liquid surface of the solder can be adjusted according to the liquid surface height of the liquid tin in the tin furnace 20, so that the lower end of the anti-oxidation cover 110 is always below the liquid surface of the solder, which can effectively prevent air from entering the anti-oxidation cavity and does not require frequent addition of solder. The present utility model solves the defects of large solder consumption and low production efficiency existing in the prior art that the wave soldering device needs to frequently add solder, realizes the free adjustment of the height of the lower end of the anti-oxidation cover 110 and keeps it below the liquid surface of the liquid tin, and does not require frequent feeding.

[0042] During specific implementation, the transmission bearing 50 located therein can be protected by means of evacuating the anti-oxidation cavity or introducing an anti-oxidation gas. Among them, the anti-oxidation gas can be nitrogen, carbon dioxide, and inert gases (such as helium), etc. In this embodiment, nitrogen is taken as an example. Introducing an anti-oxidation gas inside the anti-oxidation cavity can isolate the contact between the liquid tin and the air, reduce the generation amount of tin dross inside the anti-oxidation cover 110, thereby reducing the tin dross adsorbed on the transmission bearing 50 and preventing the transmission bearing 50 from being damaged.

[0043] According to some embodiments of the present utility model, a cavity can be provided only within the anti-oxidation cover 110 to form the above-mentioned anti-oxidation cavity, and the transmission bearing 50 can be arranged within the anti-oxidation cover 110 for protection. On this basis, in some other embodiments, a cavity can also be provided within the fixing member 120, and this cavity communicates with the cavity within the anti-oxidation cover 110. The cavity formed within the fixing member 120 and the cavity formed within the anti-oxidation cover 110 communicate to form the anti-oxidation cavity, which can increase the volume of the anti-oxidation cavity, improve the protection effect, and anti-oxidation gas can be introduced into the anti-oxidation cavity through the cavity formed within the fixing member 120, improving the flexibility of pipeline connection. The fixing member 120 plays a fixing role and is used to connect with the support frame 30 of the wave soldering device, thereby fixing the anti-oxidation structure 10. During use, since the fixing member 120 is located above the anti-oxidation cover 110 and the cavity inside it is far from the liquid surface of the molten tin, therefore, on the premise of meeting the spatial layout, the transmission bearing 50 is usually arranged in the cavity within the fixing member 120.

[0044] During specific implementation, the vertical movement of the anti-oxidation cover 110 relative to the fixing member 120 can be controlled by a screw lifting mechanism, a sliding connection mechanism, a hydraulic (pneumatic) mechanism, a chain drive mechanism, etc.

[0045] Among them, the screw lifting mechanism uses the screw drive principle. Through a motor or manual operation, the anti-oxidation cover 110 can be lifted or lowered in the vertical direction. This mechanism has a simple and reliable structure and can achieve a large stroke range. The sliding connection mechanism can achieve relative movement in the vertical direction through the combination of a slider and a guide rail. The slider can be fixed on the anti-oxidation cover 110, and the guide rail is installed on the fixing member 120, enabling the anti-oxidation cover 110 to slide vertically on the guide rail. The hydraulic (pneumatic) mechanism utilizes the force transmission characteristics of the liquid and realizes the vertical movement of the anti-oxidation cover 110 through a hydraulic cylinder or a hydraulic motor. By controlling the liquid flow and pressure in the hydraulic system, the position of the anti-oxidation cover 110 can be precisely controlled. The chain drive mechanism transmits power to the anti-oxidation cover 110 through the transmission of a chain and a gear to achieve vertical movement. The chain drive mechanism has the characteristics of a compact structure and strong load-bearing capacity.

[0046] It should be noted that during specific implementation, corresponding mechanisms can be selected according to different working conditions (such as spatial layout) to enable the anti-oxidation cover 110 to move up and down relative to the fixing member 120. And when different mechanisms are selected, a sealing mechanism can be correspondingly set to seal the anti-oxidation cavity to prevent air from entering the anti-oxidation cavity or the anti-oxidation gas from leaking out.

[0047] See Figures 1 to 3As shown, according to some embodiments of the present utility model, the fixing member 120 is threadedly connected to the anti-oxidation cover 110 to adjust the height of the lower end of the anti-oxidation cover 110 when the anti-oxidation cover 110 is rotated. By configuring the fixing member 120 and the anti-oxidation cover 110 to be threadedly connected, the height of the anti-oxidation cover 110 can be adjusted by rotating the anti-oxidation cover 110, and then the position of the lower end of the anti-oxidation cover 110 relative to the liquid tin surface can be adjusted, so that the lower end of the anti-oxidation cover 110 is always below the liquid tin surface, thereby preventing air from entering the anti-oxidation cavity. It is convenient to adjust the height of the anti-oxidation cover 110 by manually rotating it, and it is also convenient to rotate the anti-oxidation cover 110 with the help of an external driving structure to achieve automatic adjustment. It is convenient to install and disassemble the fixing member 120 and the anti-oxidation cover 110, and to clean the tin slag inside the anti-oxidation cover 110 and the fixing member 120. When the transmission bearing 50 is protected by introducing anti-oxidation gas into the anti-oxidation cavity, the threaded connection between the fixing member 120 and the anti-oxidation cover 110 can also ensure the airtightness of the anti-oxidation cavity and prevent the anti-oxidation gas from overflowing through the connection position between the fixing member 120 and the anti-oxidation cover 110. In addition, by configuring the fixing member 120 and the anti-oxidation cover 110 to be threadedly connected, after the anti-oxidation cover 110 is adjusted, the anti-oxidation cover 110 can be kept at the current height without being restricted by other constraints by using thread self-locking, and there is no need to additionally set a limiting mechanism to limit the anti-oxidation cover 110.

[0048] According to some embodiments of the present utility model, when the anti-oxidation cover 110 is rotated manually, a hand-held part convenient for hand-held operation can be provided on the anti-oxidation cover 110. On this basis, the hand-held part can also be set as a mechanism for increasing the torque. For example, on the premise of meeting the space layout and anti-interference, an adjusting rod extending radially can be provided on the outer wall of the anti-oxidation cover 110. Since the part is fixed during use, when the height of the anti-oxidation cover 110 needs to be adjusted, the anti-oxidation cover 110 can be rotated and lifted by applying a force to the adjusting rod, and this structure can keep the operator's hand appropriately away from the liquid tin, improving the safety factor during operation.

[0049] According to some embodiments of the present utility model, to further improve the airtightness of the anti-oxidation cavity, a thread sealing tape can be provided at the threaded connection position between the fixing member 120 and the anti-oxidation cover 110 to fill the incomplete surface defects at the threaded connection position between the fixing member 120 and the anti-oxidation cover 110 and prevent the leakage of anti-oxidation gas.

[0050] According to some embodiments of the present utility model, sealant can also be filled at the threaded connection position between the fixing member 120 and the anti-oxidation cover 110 to enhance the airtightness of the anti-oxidation cavity.

[0051] See Figures 1 to 3As shown, according to some embodiments of the present utility model, for the anti-oxidation structure 10 provided by the present utility model, one end of the anti-oxidation cover 110 is provided with a first threaded section 111, and one end of the fixing member 120 is provided with a second threaded section 121. The first threaded section 111 is in threaded cooperation with the second threaded section 121. By respectively arranging the first threaded section 111 and the second threaded section 121 at the ends of the anti-oxidation cover 110 and the fixing member 120, it is convenient for the anti-oxidation cover 110 and the fixing member 120 to be threadedly connected, which is convenient for assembly and can reduce the manufacturing difficulty of the anti-oxidation cover 110 and the fixing member 120.

[0052] See Figures 1 to 3 As shown, according to some embodiments of the present utility model, a limiting portion 112 is provided on the anti-oxidation cover 110. The limiting portion 112 is adapted to limit the anti-oxidation cover 110 from rotating along its own axis. Since the anti-oxidation cover 110 and the fixing member 120 are threadedly connected, during use, the vibration of the device will cause the anti-oxidation cover 110 to rotate, causing it to deviate from the set position or even fall off. By providing the limiting portion 112 on the anti-oxidation cover 110, it can be limited to prevent it from rotating along its own axis, thereby improving the stability of the anti-oxidation cover 110 during use.

[0053] Specifically, see Figures 1 to 3 As shown, in this embodiment, the limiting portion 112 is a limiting boss provided at the upper end of the anti-oxidation cover 110, and the limiting boss has a plurality of limiting side walls. During use, by making an external fixing component abut against the limiting side walls to apply a limiting effect on the limiting boss, the anti-oxidation cover 110 can be prevented from rotating. In addition, this limiting boss structure also facilitates the disassembly and assembly of the anti-oxidation cover 110 using disassembly and assembly tools (such as a wrench).

[0054] According to some embodiments of the present utility model, the limiting portion 112 can also be provided in the middle or at the lower end of the anti-oxidation cover 110. And the limiting portion 112 is not limited to the above-mentioned limiting boss shape, as long as the limiting portion 112 can be in limiting cooperation with an external fixing component to achieve the purpose of preventing the anti-oxidation cover 110 from rotating along its own axis. For example, a limiting hole (which does not communicate with the cavity inside the anti-oxidation cover 110) can be provided on the anti-oxidation cover 110. During use, in cooperation with an external limiting pin, the anti-oxidation cover 110 can also be limited.

[0055] According to some embodiments of the present utility model, the anti-oxidation cover 110 and the fixing member 120 are slidably connected vertically. By configuring the anti-oxidation cover 110 and the fixing member 120 to be slidably connected vertically, the height of the anti-oxidation cover 110 can be adjusted by sliding the anti-oxidation cover 110 vertically. Its structure is simple and is suitable for manual adjustment or applying a vertical driving effect on the anti-oxidation cover 110 through an external driving structure to achieve automatic adjustment.

[0056] It should be noted that after adjusting the anti-oxidation cover 110 to an appropriate height, the vertical position of the anti-oxidation cover 110 can be limited by the limiting mechanism of the anti-oxidation structure 10 itself or the external limiting mechanism. When adjustment is required, the limiting mechanism of the anti-oxidation structure 10 itself or the external limiting mechanism can be used to release the limit on the anti-oxidation cover 110.

[0057] According to some embodiments of the utility model, the anti-oxidation cover 110 is sleeved on the fixing member 120, and a sealing mechanism is provided between the anti-oxidation cover 110 and the fixing member 120. By sleeved the anti-oxidation cover 110 on the fixing member 120, it is convenient to configure the anti-oxidation cover 110 and the fixing member 120 into a vertical sliding connection relationship, and the structure is simple. At this time, the anti-oxidation cover 110 and the fixing member 120 are gap-matched, and the sliding connection position between the two can be sealed by the sealing mechanism.

[0058] According to some embodiments of the utility model, the sealing mechanism includes a sealing groove and a sealing ring, wherein the sealing groove is provided in the fixing member 120 or the anti-oxidation cover 110, and the sealing ring is provided in the sealing groove. The sealing ring is constrained by the anti-oxidation cover 110 and the fixing member 120, deformed and squeezed, thereby filling and sealing the gap between the two interconnected parts, and when the anti-oxidation cover 110 is adjusted to move vertically, the sealing ring can also have a good sealing effect on the small gap between the anti-oxidation cover 110 and the fixing member 120, and the structure is simple and easy to process and manufacture.

[0059] Specifically, the sealing groove may be provided on the outer wall of the fixing member 120 or on the inner wall of the anti-oxidation cover 110 .

[0060] It should be noted that the sealing mechanism may include a set of sealing grooves and sealing rings, or may include multiple sets of sealing grooves and sealing rings arranged at intervals along the vertical direction to further improve the sealing effect.

[0061] According to some embodiments of the present invention, the anti-oxidation structure 10 further includes a limiting mechanism, which is suitable for limiting the vertical movement of the anti-oxidation cover 110. By providing the limiting mechanism, the position of the anti-oxidation cover 110 can be limited after the height adjustment is completed, so that it can maintain the current position (height).

[0062] For example, a locking hole can be opened on the outer wall of the anti-oxidation cover 110, and a locking screw can be threadedly matched with the locking hole so that the end of the locking screw abuts against the outer wall of the fixing member 120, thereby playing a locking role. At this time, a sealing ring of a certain type and size can be installed between the locking screw hole and the locking screw to disperse the locking force and form a seal between the components. A layer of sealing material, such as silicone rubber, polytetrafluoroethylene, etc., can also be coated on the surface between the locking screw hole and the locking screw to seal this place.

[0063] See alsoFigures 1 to 3 As shown, according to some embodiments of the present utility model, a connection cavity adapted to communicate with an anti-oxidation gas source is formed in the fixing member 120, and the connection cavity communicates with the anti-oxidation cavity. By respectively forming the anti-oxidation cavity and the connection cavity in the anti-oxidation cover 110 and the fixing member 120, the volume of the inner cavity of the anti-oxidation structure can be increased, and the protection effect on the transmission bearing 50 can be improved. And since the connection cavity is located above the anti-oxidation cavity, its distance from the liquid tin surface is relatively far, and the intake air can be buffered through the connection cavity to prevent the intake air from affecting the liquid tin surface.

[0064] See Figures 1 to 3 As shown, according to some embodiments of the present utility model, the anti-oxidation structure 10 further includes an intake member 130 adapted to introduce an anti-oxidation gas into the anti-oxidation cavity. The intake member 130 is provided on the fixing member 120, and the intake member 130 communicates with the connection cavity. By providing the intake member 130, it is convenient to connect the pipeline for transporting the anti-oxidation gas to the anti-oxidation cavity through the intake member 130, and the intake member 130 is convenient for sealing connection with the pipeline for transporting the anti-oxidation gas, improving the airtightness of the device.

[0065] Specifically, in this embodiment, the intake member 130 is an intake nozzle. An intake hole is provided on the side wall of the fixing member 120, and the intake nozzle is provided at the intake hole by welding. The connection position between the intake nozzle and the intake hole can be sealed by welding, and there is no need to additionally provide a sealing structure at this position.

[0066] According to some embodiments of the present utility model, the anti-oxidation cover 110 is a stainless steel anti-oxidation cover 110 or a titanium alloy anti-oxidation cover 110, and the fixing member 120 is a stainless steel fixing member 120 or a titanium alloy fixing member 120. Stainless steel and titanium alloy have good corrosion resistance and heat resistance, and have good strength and stiffness, and their service life is long.

[0067] Next, see Figure 1 and Figure 2 , and the anti-oxidation structure 10 according to the embodiments of the present utility model will be described in detail.

[0068] The anti-oxidation structure 10 includes an anti-oxidation cover 110, a fixing member 120 and an intake member 130. A first threaded section 111 (internal threaded section) is provided at the upper end of the anti-oxidation cover 110, and a second threaded section 121 (external threaded section) is provided at the lower end of the fixing member 120. The anti-oxidation cover 110 and the fixing member 120 are threadedly connected through the first threaded section 111 and the second threaded section 121, which is convenient to adjust the height of the anti-oxidation cover 110 by rotating the anti-oxidation cover 110. The position of the lower end of the anti-oxidation cover 110 relative to the liquid tin surface in the tin furnace 20 can be adjusted according to the liquid level height of the liquid tin in the tin furnace 20, so that the lower end of the anti-oxidation cover 110 is always below the liquid tin surface, which can effectively prevent air from entering the anti-oxidation cavity, and there is no need to frequently add solder.

[0069] A limiting boss is provided at the upper end of the anti-oxidation cover 110, and the limiting boss has a plurality of limiting side walls. During use, by abutting an external fixing member against the limiting side walls to apply a limiting effect on the limiting boss, the anti-oxidation cover 110 can be prevented from rotating. In addition, this limiting boss structure also facilitates the disassembly and assembly of the anti-oxidation cover 110 using disassembly and assembly tools (such as a wrench).

[0070] A connection cavity is provided inside the fixing member 120, and the connection cavity is communicated with the anti-oxidation cavity. During use, the anti-oxidation cavity can be evacuated or filled with anti-oxidation gas to protect the transmission bearing 50 therein. The air inlet member 130 is welded to the side wall of the fixing member 120 and is communicated with the connection cavity, and the anti-oxidation gas can be introduced into the connection cavity through the air inlet member 130. The connection cavity can play a certain buffering role for the introduced anti-oxidation gas to prevent the anti-oxidation gas from affecting the liquid level of the liquid tin.

[0071] See Figure 3 As shown, the wave soldering device provided by the present utility model includes a tin furnace 20, a support frame 30, a driving device 40, and the anti-oxidation structure 10 described in any one of the above embodiments. Among them, the support frame 30 is connected to the tin furnace 20, the driving device 40 is provided on the support frame 30, a transmission bearing 50 is provided at the output end of the driving device 40, the fixing member 120 is connected to the support frame 30, and the transmission bearing 50 is located inside the anti-oxidation cavity.

[0072] For the wave soldering device provided by the present utility model, since the above anti-oxidation structure 10 is used to protect the transmission bearing 50, it can prevent the contact between the liquid tin and the air through the anti-oxidation structure 10, reduce the generation of tin dross inside the oxidation protection cover cavity, and reduce the tin dross adsorbed on the transmission bearing 50. And by enabling the anti-oxidation cover 110 to move vertically relative to the fixing member 120, the position of the lower end of the anti-oxidation cover 110 relative to the liquid level of the tin material in the tin furnace 20 can be adjusted according to the liquid level height of the liquid tin in the tin furnace 20, so that the lower end of the anti-oxidation cover 110 is always below the liquid level of the tin material, which can effectively prevent air from entering the anti-oxidation cavity and does not require frequent addition of solder.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An anti-oxidation structure, characterized in that, Suitable for being installed in a wave soldering device, including: An anti-oxidation cover, an anti-oxidation cavity is formed inside the anti-oxidation cover, so that the transmission assembly of the wave soldering device is located inside the anti-oxidation cavity; A fixing member, the anti-oxidation cover is connected to the fixing member, and the anti-oxidation cover can move vertically relative to the fixing member to adjust the height of the lower end of the anti-oxidation cover relative to the solder liquid level.

2. The anti-oxidation structure according to claim 1, wherein The fixing member is threadedly connected to the anti-oxidation cover to adjust the height of the lower end of the anti-oxidation cover when the anti-oxidation cover is rotated.

3. The anti-oxidation structure according to claim 2, wherein, One end of the anti-oxidation cover is provided with a first thread section, one end of the fixing member is provided with a second thread section, and the first thread section is in threaded cooperation with the second thread section.

4. The anti-oxidation structure according to claim 2, characterized in that A limiting portion is provided on the anti-oxidation cover, and the limiting portion is suitable for restricting the anti-oxidation cover from rotating along its own axis.

5. The anti-oxidation structure according to claim 1, characterized in that The anti-oxidation cover is slidably connected to the fixing member in the vertical direction.

6. The anti-oxidation structure according to claim 5, wherein, The anti-oxidation cover is sleeved on the fixing member, and a sealing mechanism is provided between the anti-oxidation cover and the fixing member.

7. The anti-oxidation structure according to claim 6, wherein The sealing mechanism includes a sealing groove and a sealing ring. The sealing groove is provided on the fixing member or the anti-oxidation cover, and the sealing ring is provided in the sealing groove.

8. The anti-oxidation structure according to claim 5, characterized in that, It further includes a limiting mechanism, and the limiting mechanism is suitable for restricting the vertical movement of the anti-oxidation cover.

9. The anti-oxidation structure according to any one of claims 1 to 8, characterized in that, A connection cavity suitable for communicating with an anti-oxidation gas source is formed inside the fixing member, and the connection cavity is communicated with the anti-oxidation cavity.

10. The anti-oxidation structure according to claim 9, wherein, It further includes an air inlet member suitable for introducing anti-oxidation gas. The air inlet member is provided on the fixing member, and the air inlet member is communicated with the connection cavity.

11. A wave soldering device, characterized in that, Including: A solder pot; A support frame, the support frame is connected to the solder pot; A driving device, the driving device is provided on the support frame, and a transmission bearing is provided at the output end of the driving device; The anti-oxidation structure according to any one of claims 1 to 10, the fixing member is connected to the support frame, and the transmission bearing is located inside the anti-oxidation cavity.

Images