A guide plate mechanism for a circuit board hot air leveling tin furnace

Abstract

The utility model discloses a kind of line board hot air leveling tin furnace's guide fender mechanism, comprising: a pair of symmetrically arranged in the feed inlet position both sides of air knife seat of tin furnace material guide strip, the material guide strip is formed with the guide groove arranged along its length direction;The upper and lower ends of guide groove are all provided with the guide plate of flared structure, the guide plate is connected with guide groove, forms in and out material guide wire structure;Material guide strip adopts short axle distance structure design, the guide plate of lower end of material guide strip is higher than tin liquid surface height in tin furnace;Through the tin furnace guide fender mechanism, the guiding work of line board feeding and discharging is realized, can make line board import and export more smoothly, to effectively solve the problem of line board when entering tin furnace, edge lifting, displacement, and the problem of hot air leveling defect caused by deformation when exporting;In addition, guide structure adopts short axle distance structure design, by shortening high temperature zone contact length, reduce heat conduction influence, improve structure heat deformation resistance.

Description

Technical Field

[0001] This utility model belongs to the technical field of tin furnace equipment, and relates to a guide plate mechanism for a circuit board hot air leveling tin furnace. Background Technology

[0002] During the hot air leveling process of printed circuit boards (PCBs), the PCBs, being thin boards, are prone to warping or lateral displacement when entering the solder pot. Traditional guiding methods use long guide rails inserted into the bottom of the solder pot. These guide rails are constantly exposed to high temperatures, making them susceptible to deformation. Furthermore, cleaning the oil and solder dross carbides from the air knife holder requires removing the guide rails, followed by reinstallation and trial adjustments, severely impacting production efficiency. Therefore, a solder pot guide guard plate mechanism that can solve these problems is needed. Utility Model Content

[0003] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0004] A guide plate mechanism for a hot air leveling solder spraying furnace for circuit boards includes: a pair of guide strips symmetrically arranged on both sides of the air knife seat inlet of the solder furnace, wherein the guide strips are formed with guide grooves arranged along their length.

[0005] Both the upper and lower ends of the guide channel are equipped with guide plates with a trumpet-shaped structure. These guide plates are connected to the guide channel to form an infeed and outfeed guide wire structure.

[0006] The guide bar adopts a short wheelbase structure design, and the guide plate at the lower end of the guide bar is higher than the surface of the molten tin in the tin furnace.

[0007] As a further embodiment of this utility model: the guide bar is provided with a quick-fixing clamp and a quick-installation bracket for quick installation.

[0008] The beneficial effects of this utility model are as follows: The tin furnace guide plate mechanism guides the circuit board during feeding and unloading, making the board entry and exit smoother. This effectively solves the problems of edge warping and displacement when the circuit board enters the tin furnace, as well as the problem of poor hot air leveling caused by deformation during unloading. In addition, the guide structure adopts a short-axis design, which reduces the impact of heat conduction by shortening the contact length of the high-temperature zone and improving the structure's resistance to thermal deformation. At the same time, under this structural design, the guide plate can form a linkage flipping mechanism with the air knife seat, enabling internal cleaning operations of the tin furnace without disassembling the guide components, effectively balancing guide accuracy and maintenance convenience. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structural arrangement of this utility model.

[0010] Figure 2This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0011] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. It should be understood that this application is not limited to the exemplary embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0012] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0013] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0014] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0015] This utility model provides a reference. Figures 1-2 In this embodiment of the utility model, a guide plate mechanism for a hot air leveling soldering furnace for circuit boards includes: a pair of guide strips 3 symmetrically arranged on both sides of the inlet position of the air knife seat 2 of the soldering furnace 1, and guide grooves 32 arranged along their length direction are formed on the guide strips 3; during the soldering operation, the two sides of the circuit board will pass through the guide grooves 32 and enter the soldering furnace 1.

[0016] Both the upper and lower ends of the guide groove 32 are provided with a flared guide plate 33, which is connected to the guide groove 32 to form an infeed and outfeed wire structure. When the circuit board descends rapidly into the tin furnace 1, it may swing back and forth, causing the end to form a fan shape and making it difficult to enter the guide groove 32. The guide plate 33 at the upper end of the guide groove 32 can achieve the effect of guiding the feeding.

[0017] Similarly, the circuit board will soften and deform after being tinned at high temperature. When the circuit board is lifted from the tin furnace 1, the guide plate 33 of the guide groove 32 can achieve the effect of material discharge guidance, which can prevent the circuit board from contacting the edge of the guide groove 32 and causing the circuit board to deform.

[0018] The guide bar 3 adopts a short wheelbase structure design, and the guide plate 33 at the lower end of the guide bar 3 is higher than the surface height of the molten tin in the tin furnace 1. By shortening the contact length in the high temperature zone, the influence of heat conduction is reduced, and the structural resistance to thermal deformation is improved. At the same time, under this structural design, the guide bar 3 can form a linkage flipping mechanism with the air knife seat 2 (the air knife seat 2 is hinged to the tin furnace 1), so as to realize the internal cleaning operation of the tin furnace 1 without disassembling the guide components, effectively balancing the guide accuracy and maintenance convenience.

[0019] Furthermore, the guide bar 3 is provided with a quick-fixing clip 34 and a quick-installation bracket 35 for quick installation; in use, the guide bar 3 can be installed on the corresponding position of the air knife holder 2 through the quick-installation bracket 35 and the quick-fixing clip 34 to achieve the effect of quick assembly and disassembly.

[0020] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A guide plate mechanism for a circuit board hot air leveling tin furnace, characterized by comprising: The utility model relates to a tin furnace feeding device, including: a pair of symmetrically arranged guide bars on both sides of the air knife seat feeding port position of the tin furnace, the guide bar is formed with a guide groove arranged along the length direction; the upper and lower ends of the guide groove are both provided with a guide plate in a horn structure, the guide plate is connected with the guide groove to form an in-out material guide line structure; the guide bar adopts a short axle distance structure design, and the guide plate at the lower end of the guide bar is higher than the tin liquid surface height in the tin furnace.

2. The guide shield mechanism of a hot air leveling tin furnace for a wiring board according to claim 1, wherein the guide bar is provided with a quick fixing clamp and a quick mounting clamping seat for realizing quick installation.

Images