A feeding guide rail for automatic wave soldering

Abstract

This utility model discloses an automatic wave soldering feeding guide, relating to the field of wave soldering processing technology. It includes an installation assembly and a fixed frame. The fixed frame has a positioning element at its top and a conveyor chain at its bottom. A mounting plate is fixed to one side of the fixed frame, and a protective shell is fixed to one side of the mounting plate. This utility model, through the adjustment of the assembly and the cooperation of the tightening bolt and the rotating plate, drives the tension wheel to move via a locking element. Simultaneously, the guide groove and guide rod limit the direction of the tension wheel's displacement to ensure uniform tension. Furthermore, the matching of the limiting plate and the limiting groove achieves normal locking of the rotating shaft and the sprocket, ensuring transmission stability. For cleaning, simply rotate the second rotating rod; the linkage of the fixed plate, the first limiting rod, and the second limiting rod pulls the limiting plate away from the limiting groove to release the lock, allowing the sprocket to be removed for subsequent cleaning and replacement.

Description

Technical Field

[0001] This utility model relates to the field of wave soldering technology, and in particular to a feeding guide rail for automatic wave soldering. Background Technology

[0002] Wave soldering is an automated process for mass soldering printed circuit boards (PCBs) in electronics manufacturing. The core of it is to bring the bottom of the PCB into contact with molten solder waves. Wave soldering is an assembly line operation. The feeding guide is driven by a chain or belt to move the PCB board continuously, replacing manual handling and greatly improving production efficiency.

[0003] In existing wave soldering feed guides, insufficient belt tension during prolonged operation can lead to decreased friction between the conveyor belt and the drive wheel, causing slippage. This results in fluctuations in the transmission speed during PCB soldering, leading to uneven solder joint wetting time. Additionally, after long-term operation, sprockets accumulate flux residue, solder dross, and oil. If disassembly is difficult, thorough cleaning is impossible. The residual flux is corrosive, accelerating wear on sprocket teeth and bearings, and reducing transmission accuracy. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the above and / or existing automatic wave soldering feed rails, this utility model is proposed.

[0006] Therefore, the problem to be solved by this utility model is how to address the issue that insufficient belt tension in existing wave soldering feed guides during long-term operation leads to a decrease in friction between the conveyor belt and the drive wheel, causing slippage and resulting in fluctuations in the transmission speed of the PCB board during soldering. This leads to uneven solder joint wetting time. At the same time, after long-term operation, the sprocket will accumulate flux residue, solder slag, and oil stains. If it is difficult to disassemble and clean thoroughly, the residual flux is corrosive and will accelerate the wear of the sprocket teeth and bearings, reducing transmission accuracy.

[0007] To solve the above technical problems, this utility model provides the following technical solution: an automatic wave soldering feeding guide rail, comprising: a mounting assembly including a fixing frame, a positioning element provided at the top of the fixing frame, a conveying chain provided at the bottom of the positioning element, a mounting plate fixed on one side of the fixing frame, a protective shell fixed on one side of the mounting plate; an adjusting assembly disposed in the inner cavity of the protective shell, including an L-shaped plate fixed to the surface of the mounting plate, a tightening bolt threadedly connected to the surface of the L-shaped plate, a connecting shaft fixedly sleeved on one side of the L-shaped plate, a rotating plate rotatably sleeved on the surface of the connecting shaft, a rotating shaft rotatably connected to the surface of the mounting plate, a sprocket and a limiting disc movably sleeved on the surface of the rotating shaft, a limiting groove formed on the surface of the limiting disc, and a locking element provided on one side of the rotating plate.

[0008] As a preferred embodiment of the automatic wave soldering feeding guide rail of this utility model, the number of positioning components is several, one end of the clamping bolt is in close contact with one side of the rotating plate, and one side of the sprocket is rotatably connected to one side of the limiting disc.

[0009] As a preferred embodiment of the automatic wave soldering feeding guide rail of this utility model, the locking component includes a limiting plate disposed on one side of the limiting disc and adapted to the limiting groove. There are two limiting plates, and the other end of the limiting plate is rotatably connected to a first rotating rod via a rotating shaft.

[0010] In a preferred embodiment of the automatic wave soldering feeding guide rail of this utility model, a connecting rod is fixed to the surface of the first rotating rod, a displacement rod is fixed to the bottom of the connecting rod, and a compression spring is fixedly sleeved on the surface of the displacement rod.

[0011] In a preferred embodiment of the automatic wave soldering feeding guide rail of this utility model, one end of the compression spring is fixed to the surface of the displacement rod, and the other end of the compression spring is fixed to the bottom of the connecting rod.

[0012] As a preferred embodiment of the automatic wave soldering feeding guide rail of this utility model, the bottom of the displacement rod is fixed with a mounting block, the surface of the mounting block is fixed with a round rod and rotatably connected to one side of the rotating plate, and one side of the rotating plate is provided with a displacement groove that is adapted to the round rod.

[0013] As a preferred embodiment of the automatic wave soldering feeding guide rail of this utility model, a fixing plate is fixed on one side of the rotating plate, and a second rotating rod is rotatably connected to the surface of the rotating plate. One end of the second rotating rod passes through the surface of the fixing plate and is fixedly connected to the surface of the fixing plate.

[0014] In a preferred embodiment of the automatic wave soldering feeding guide rail of this utility model, one end of the fixing plate is rotatably connected to a first limiting rod via a rotating shaft, the other end of the first limiting rod is rotatably connected to the bottom of the mounting block, and the other end of the fixing plate is rotatably connected to a second limiting rod via a rotating shaft.

[0015] As a preferred embodiment of the automatic wave soldering feeding guide rail of this utility model, the second limiting rod is rotatably connected to a connecting block via a rotating shaft on one side, the surface of the connecting block is provided with a guide groove, and a guide rod is provided on one side of the rotating plate and is adapted to the guide groove.

[0016] As a preferred embodiment of the automatic wave soldering feeding guide rail of this utility model, a tensioning wheel is provided on one side of the fixed frame, and a rectangular rod is fixed at one end of the tensioning wheel. A rectangular groove is provided on the surface of the rectangular rod and is adapted to the connecting block.

[0017] The beneficial effects of this utility model are as follows: By adjusting the configuration of the components, the rotating bolt can be rotated around the connecting shaft by cooperating with the tightening bolt and the rotating plate. This, in turn, drives the tension wheel to move through the locking component. At the same time, the guide groove and guide rod can limit the displacement direction of the tension wheel to ensure uniform tension. Furthermore, the adaptation of the limiting plate and the limiting groove enables the rotating shaft and the sprocket to be normally locked, ensuring transmission stability. When cleaning is required, simply rotate the second rotating rod. Through the linkage of the fixing plate, the first limiting rod, and the second limiting rod, the limiting plate can be pulled away from the limiting groove to release the lock, and the sprocket can be removed for subsequent cleaning and replacement operations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A scene diagram of a feeding guide rail used in automated wave soldering.

[0020] Figure 2 This is a partial structural diagram of the feeding guide rail used in automatic wave soldering.

[0021] Figure 3 A partial structural diagram of the adjustment assembly for the feed guide rail used in automatic wave soldering.

[0022] Figure 4 Side view of the adjustment assembly for the feed guide rail used in automatic wave soldering.

[0023] Figure 5Another structural view of the adjustment assembly for the feed guide rail used in automatic wave soldering.

[0024] Figure 6 This is a structural diagram of the locking component for the feed guide rail used in automatic wave soldering.

[0025] Figure 7 Feed guide for automatic wave soldering Figure 6 Enlarged structural diagram of A in the middle.

[0026] Figure 8 This is a structural diagram of the round rod and displacement groove of the feeding guide for automatic wave soldering.

[0027] In the diagram: 1. Mounting assembly; 11. Fixing frame; 12. Positioning component; 13. Conveyor chain; 14. Mounting plate; 15. Protective shell; 2. Adjusting assembly; 21. L-shaped plate; 211. Tightening bolt; 22. Connecting shaft; 23. Rotating plate; 24. Locking component; 241. Limiting plate; 242. First rotating rod; 2421. Connecting rod; 2422. Displacement rod; 2423. Compression spring; 2424. Mounting... 2425, round rod; 2426, displacement groove; 243, fixing plate; 2431, second rotating rod; 2432, first limiting rod; 2433, second limiting rod; 244, connecting block; 2441, guide groove; 2442, guide rod; 2443, rectangular rod; 2444, rectangular groove; 245, tensioning wheel; 25, rotating shaft; 251, sprocket; 252, limiting disc; 2521, limiting groove. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0031] Example 1, referring to Figure 1 and Figure 2This is the first embodiment of the present invention, which provides an automatic wave soldering feeding guide. The automatic wave soldering feeding guide includes an installation component 1 and an adjustment component 2. In existing wave soldering feeding guides, insufficient belt tension during long-term operation can lead to a decrease in friction between the conveyor belt and the drive wheel, causing slippage. This results in fluctuations in the transmission speed of the PCB board during soldering, leading to uneven solder joint wetting time. At the same time, after long-term operation, the sprocket will accumulate flux residue, solder dross, and oil stains. If it is difficult to disassemble easily, it will be difficult to clean thoroughly. The residual flux is corrosive and will accelerate the wear of the sprocket teeth and bearings, reducing transmission accuracy.

[0032] Specifically, the mounting component 1 includes a fixing frame 11, a positioning element 12 is provided on the top of the fixing frame 11, a conveyor chain 13 is provided on the bottom of the positioning element 12, a mounting plate 14 is fixed on one side of the fixing frame 11, and a protective shell 15 is fixed on one side of the mounting plate 14.

[0033] The fixing frame 11 serves as the main support structure for the mounting assembly 1, providing a stable mounting base for the positioning component 12, conveying chain 13, and mounting plate 14. This ensures the structural stability of the entire feeding guide during operation and prevents transmission deviation caused by vibration. The positioning component 12 is used to position the PCB board during transmission, ensuring the accurate position of the PCB board on the conveying chain 13 and preventing it from shifting during movement. This also ensures accurate contact between the PCB board and the molten solder wave, improving the welding quality.

[0034] The mounting plate 14 is fixed to one side of the mounting bracket 11, providing a mounting carrier for the adjustment component 2 and the protective shell 15. This integrates the adjustment function with the main structure, making the device compact and facilitating the coordinated operation of each component. The protective shell 15 prevents flux residue, solder dross, oil stains and impurities generated during wave soldering from entering the interior of the adjustment component 2, protecting the internal parts from corrosion and contamination, and extending the service life of the adjustment component 2.

[0035] Specifically, the adjusting component 2, located in the inner cavity of the protective shell 15, includes an L-shaped plate 21 fixed to the surface of the mounting plate 14. The surface of the L-shaped plate 21 is threaded with a clamping bolt 211. A connecting shaft 22 is fixedly sleeved on one side of the L-shaped plate 21. A rotating plate 23 is rotatably sleeved on the surface of the connecting shaft 22. A rotating shaft 25 is rotatably connected to the surface of the mounting plate 14. A sprocket 251 and a limiting disc 252 are movably sleeved on the surface of the rotating shaft 25. A limiting groove 2521 is formed on the surface of the limiting disc 252. A locking element 24 is provided on one side of the rotating plate 23.

[0036] The L-shaped plate 21 is fixed to the surface of the mounting plate 14, providing a threaded connection fulcrum for the clamping bolt 211. At the same time, the rotating plate 23 is supported by the fixedly sleeved connecting shaft 22, providing a stable mounting base for the rotation adjustment of the rotating plate 23 and ensuring the reliability of the adjustment action. The position of the tensioning wheel 245 can be adjusted by the clamping bolt 211. The operation is simple and the tension can be controlled.

[0037] By setting the rotating plate 23, the connecting shaft 22, the locking component 24, and the tension wheel 245 can be linked together. Through its own rotation, power is transmitted to realize the coordinated action of adjusting the tension wheel 245 and locking and unlocking the sprocket 251, ensuring smooth linkage of each functional component.

[0038] Example 2, refer to Figures 2-8 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0039] Specifically, there are several positioning components 12, one end of the clamping bolt 211 is in close contact with one side of the rotating plate 23, and one side of the sprocket 251 is rotatably connected to one side of the limiting disc 252.

[0040] Specifically, the locking member 24 includes a limiting plate 241 disposed on one side of the limiting disc 252 and adapted to the limiting groove 2521. There are two limiting plates 241, and the other end of the limiting plate 241 is rotatably connected to a first rotating rod 242 via a rotating shaft.

[0041] Specifically, a connecting rod 2421 is fixed to the surface of the first rotating rod 242, a displacement rod 2422 is fixed to the bottom of the connecting rod 2421, and a compression spring 2423 is fixedly sleeved on the surface of the displacement rod 2422.

[0042] Specifically, one end of the compression spring 2423 is fixed to the surface of the displacement rod 2422, and the other end of the compression spring 2423 is fixed to the bottom of the connecting rod 2421.

[0043] Specifically, a mounting block 2424 is fixed to the bottom of the displacement rod 2422, and a round rod 2425 is fixed to the surface of the mounting block 2424 and rotatably connected to one side of the rotating plate 23. A displacement groove 2426 is provided on one side of the rotating plate 23 and is adapted to the round rod 2425.

[0044] Specifically, a fixing plate 243 is fixed to one side of the rotating plate 23, and a second rotating rod 2431 is rotatably connected to the surface of the rotating plate 23. One end of the second rotating rod 2431 passes through the surface of the fixing plate 243 and is fixedly connected to the surface of the fixing plate 243.

[0045] Specifically, one end of the fixing plate 243 is rotatably connected to a first limiting rod 2432 via a rotating shaft, the other end of the first limiting rod 2432 is rotatably connected to the bottom of the mounting block 2424, and the other end of the fixing plate 243 is rotatably connected to a second limiting rod 2433 via a rotating shaft.

[0046] Specifically, a connecting block 244 is rotatably connected to one side of the second limiting rod 2433 via a rotating shaft. A guide groove 2441 is provided on the surface of the connecting block 244. A guide rod 2442 is provided on one side of the rotating plate 23 and is adapted to the guide groove 2441.

[0047] Specifically, a tensioning wheel 245 is provided on one side of the fixing frame 11, and a rectangular rod 2443 is fixed to one end of the tensioning wheel 245. A rectangular groove 2444 is opened on the surface of the rectangular rod 2443, and it is adapted to the connecting block 244.

[0048] By setting the limiting plate 241, it is adapted to the limiting groove 2521 of the limiting disc 252. Under normal conditions, it can lock the relative position of the rotating shaft 25 and the sprocket 251 by being inserted into the limiting groove 2521, preventing the sprocket 251 from shifting during transmission. When unlocking, it is disengaged from the limiting groove 2521, providing conditions for the disassembly of the sprocket 251, taking into account both transmission stability and maintenance convenience.

[0049] The first rotating rod 242 is rotatably connected to the limiting plate 241 at one end, and the other end drives the displacement rod 2422 through the connecting rod 2421 to transmit the unlocking action, thereby realizing the displacement of the limiting plate 241 and controlling the switching of the locking state to ensure reliable locking and unlocking actions. The mounting block 2424 serves as a connecting component to integrate the round rod 2425, the displacement rod 2422 and the first limiting rod 2432, ensuring smooth transmission of the actions of each component and improving the stability of the linkage structure.

[0050] The circular rod 2425 is fixed to the mounting block 2424 and adapted to the displacement groove 2426 of the rotating plate 23, which restricts the displacement direction of the mounting block 2424 and ensures that the mounting block 2424 and the connected components move along the predetermined trajectory, avoiding deviation during the adjustment process. The fixed plate 243 provides mounting fulcrums for the second rotating rod 2431, the first limiting rod 2432, and the second limiting rod 2433, integrates the linkage components, and ensures the structural stability of the locking and tensioning adjustment actions.

[0051] The first limiting rod 2432 is rotatably connected to the fixed plate 243 and the mounting block 2424 at both ends, respectively, transmitting the action of the second rotating rod 2431 to the mounting block 2424, causing the mounting block 2424 and the limiting plate 241 to move, thereby switching the locking state and ensuring the unlocking action is effective. The second limiting rod 2433 is rotatably connected to the fixed plate 243 and the connecting block 244 at both ends, transmitting power to the connecting block 244, causing the tension wheel 245 to move, thereby adjusting the tension of the conveyor chain 13 and ensuring that the tensioning action and the unlocking action are coordinated.

[0052] The tensioning wheel 245 is set to contact the conveyor chain 13. The tension of the conveyor chain 13 is changed by adjusting its position, which solves the slippage problem caused by insufficient tension, ensures stable PCB board transmission speed, and improves welding consistency. The limiting disc 252 is set to be movably sleeved on the rotating shaft 25 and rotatedly connected to the sprocket 251. The limiting groove 2521 is opened on the surface to cooperate with the limiting plate 241.

[0053] The sprocket 251 is fixed in position by locking with the limiting plate 241, ensuring the stability of the sprocket 251 during transmission. The limiting groove 2521 is set on the surface of the limiting disc 252 and is adapted to the limiting plate 241, providing a locking point for the limiting plate 241. This ensures that the limiting plate 241 can reliably lock the limiting disc 252 and the sprocket 251, preventing the sprocket 251 from shifting axially or circumferentially during transmission.

[0054] During use, the positioning component 12 limits the PCB board in transit to ensure that it is accurately positioned on the conveyor chain 13. The conveyor chain 13 cooperates with the sprocket 251 and drives the PCB board to move continuously under the drive of the rotating shaft 25, thereby realizing automated feeding.

[0055] When the tension of the conveyor chain 13 is insufficient, by adjusting the setting of component 2, the rotating bolt can be driven to rotate around the connecting shaft 22 by the cooperation of the clamping bolt 211 and the rotating plate 23. Then, the tensioning wheel 245 is displaced by the locking component 24. At the same time, the guide groove 2441 and the guide rod 2442 can limit the displacement direction of the tensioning wheel to ensure uniform tension.

[0056] Meanwhile, the adaptation of the limiting plate 241 and the limiting groove 2521 enables the normal locking of the rotating shaft 25 and the sprocket 251, ensuring transmission stability. When cleaning is required, simply rotate the second rotating rod 2431, and the linkage of the fixing plate 243, the first limiting rod 2432 and the second limiting rod 2433 will pull the limiting plate 241 away from the limiting groove 2521 to release the lock, and the sprocket 251 can be removed for subsequent cleaning and replacement.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A feeding guide for automatic wave soldering, characterized in that: include, The mounting assembly (1) includes a fixing frame (11), a positioning element (12) is provided on the top of the fixing frame (11), a conveying chain (13) is provided on the bottom of the positioning element (12), a mounting plate (14) is fixed on one side of the fixing frame (11), and a protective shell (15) is fixed on one side of the mounting plate (14). Adjustment component (2), located in the inner cavity of protective shell (15), includes an L-shaped plate (21) fixed to the surface of mounting plate (14), the surface of the L-shaped plate (21) is threaded with a clamping bolt (211), a connecting shaft (22) is fixedly sleeved on one side of the L-shaped plate (21), a rotating plate (23) is rotatably sleeved on the surface of the connecting shaft (22), a rotating shaft (25) is rotatably connected to the surface of mounting plate (14), a sprocket (251) and a limiting disc (252) are movably sleeved on the surface of the rotating shaft (25), a limiting groove (2521) is opened on the surface of the limiting disc (252), and a locking member (24) is provided on one side of the rotating plate (23).

2. The automatic wave soldering feed guide rail as described in claim 1, characterized in that: The number of positioning components (12) is several, one end of the clamping bolt (211) is in close contact with one side of the rotating plate (23), and one side of the sprocket (251) is rotatably connected to one side of the limiting disc (252).

3. The automatic wave soldering feed guide as described in claim 1 or 2, characterized in that: The locking member (24) includes a limiting plate (241) disposed on one side of the limiting disc (252) and adapted to the limiting groove (2521). There are two limiting plates (241), and the other end of the limiting plate (241) is rotatably connected to a first rotating rod (242) via a rotating shaft.

4. The automatic wave soldering feed guide rail as described in claim 3, characterized in that: A connecting rod (2421) is fixed to the surface of the first rotating rod (242), a displacement rod (2422) is fixed to the bottom of the connecting rod (2421), and a compression spring (2423) is fixedly sleeved on the surface of the displacement rod (2422).

5. The automatic wave soldering feed guide as described in any one of claims 1, 2, or 4, characterized in that: One end of the compression spring (2423) is fixed to the surface of the displacement rod (2422), and the other end of the compression spring (2423) is fixed to the bottom of the connecting rod (2421).

6. The automatic wave soldering feed guide as described in claim 5, characterized in that: The bottom of the displacement rod (2422) is fixed with a mounting block (2424), and a round rod (2425) is fixed on the surface of the mounting block (2424) and rotatably connected to one side of the rotating plate (23). A displacement groove (2426) is opened on one side of the rotating plate (23) and is adapted to the round rod (2425).

7. The automatic wave soldering feed guide as described in claim 6, characterized in that: A fixing plate (243) is fixed on one side of the rotating plate (23). A second rotating rod (2431) is rotatably connected to the surface of the rotating plate (23). One end of the second rotating rod (2431) passes through the surface of the fixing plate (243) and is fixedly connected to the surface of the fixing plate (243).

8. The automatic wave soldering feed guide as described in claim 7, characterized in that: One end of the fixing plate (243) is rotatably connected to a first limiting rod (2432) via a rotating shaft, and the other end of the first limiting rod (2432) is rotatably connected to the bottom of the mounting block (2424). The other end of the fixing plate (243) is rotatably connected to a second limiting rod (2433) via a rotating shaft.

9. The automatic wave soldering feed guide as described in claim 8, characterized in that: The second limiting rod (2433) is rotatably connected to a connecting block (244) via a rotating shaft. The surface of the connecting block (244) is provided with a guide groove (2441). The rotating plate (23) is provided with a guide rod (2442) on one side, which is adapted to the guide groove (2441).

10. The automatic wave soldering feed guide as described in claim 9, characterized in that: A tensioning wheel (245) is provided on one side of the fixing frame (11), and a rectangular rod (2443) is fixed at one end of the tensioning wheel (245). A rectangular groove (2444) is provided on the surface of the rectangular rod (2443) and is adapted to the connecting block (244).

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