Surface-mounted component welding furnace

Abstract

The utility model discloses a surface-mounted component welding furnace, which relates to the technical field of welding furnaces and comprises a welding machine, an upper cover is mounted at the top end of the welding machine, a hot air mechanism penetrating to an inner cavity of the upper cover is mounted at the top end of the upper cover, and a downward concave groove body is formed in the top end of the welding machine. A conveying mechanism penetrating to one end of the outer part of the welding machine is mounted in the groove body; the conveying mechanism comprises a rotating motor installed at one end of the welding machine, a mounting groove is formed in the welding machine, a protective cover is installed at an opening in the upper portion of the mounting groove, and two gears meshed with each other are arranged in the mounting groove. According to the utility model, the clamping mechanism is arranged and can be used for clamping the PCBs with different thicknesses, so that the PCBs with different thicknesses can be properly clamped and conveyed without additional adjustment operation in the welding process, and the working efficiency of welding operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding furnaces, in particular to a chip component welding furnace. Background Art

[0002] During reflow soldering, solder paste is applied to the corresponding locations on the PCB, and the corresponding electronic components are attached to the mounting locations. The PCB is then placed in a reflow oven, where hot air processing (heated nitrogen blowing) melts the solder paste and secures the electronic components to the PCB. However, when soldering PCBs of varying thicknesses (typically 62-93 mils), the reflow oven's conveyor mechanism needs to be adjusted to properly hold the PCB, resulting in inconvenient operation. Utility Model Content

[0003] The purpose of the present invention is to provide a soldering furnace for patch components in order to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a patch component welding furnace, comprising a welding machine, an upper cover is installed at the top of the welding machine, a hot air mechanism penetrating into the inner cavity of the upper cover is installed at the top of the upper cover, an installation slot is provided inside the welding machine, a protective cover is installed at the upper opening of the installation slot, a conveying mechanism penetrating into one end of the outside of the welding machine is installed inside the installation slot; the conveying mechanism comprises a rotating motor installed at one end of the welding machine, two meshing gears are provided inside the installation slot, one of the gears is connected to the output end of the rotating motor through a rotating shaft and a coupling, one end of the two gears is connected to a synchronous shaft penetrating into the inside of the installation slot, and two sets of transmission components are rotatably installed on the inner wall of the installation slot.

[0005] As a further solution of the present invention: the two transmission components are symmetrically arranged up and down, and a group of the transmission components includes four synchronous wheels, and the four synchronous wheels are distributed in a rectangular shape. The two synchronous wheels distributed along the length direction of the installation groove are connected by a transmission belt, and the two synchronous wheels distributed along the width direction of the installation groove are synchronously connected through a rotating shaft. The outer periphery of the transmission belt is provided with an inwardly recessed outer groove, and a limiting mechanism is installed inside the outer groove, and the limiting mechanism is located on the inner side of the outer groove.

[0006] As a further solution of the present invention: the two gears are coaxially connected to two synchronous wheels symmetrically distributed up and down through a synchronous shaft.

[0007] As a further solution of the present invention: the limiting mechanism includes an annular wall No. 1 rubber sleeve integrally formed on the inner wall of the outer groove, a fixed block is inserted into the interior of the No. 1 rubber sleeve through interference, a rotating block is rotatably installed on one end of the fixed block located outside the No. 1 rubber sleeve, a No. 2 rubber sleeve is inserted into the outer wall of the rotating block through interference, and an inclined surface is formed on the end of the No. 2 rubber sleeve away from the No. 1 rubber sleeve.

[0008] As a further solution of the present invention: the limiting mechanism also includes two arc-shaped grooves opened on the inner side of the rotating part of the fixed block and movable columns integrally formed on both sides of the rotating block, and the movable columns are movably connected to the inner walls of the arc-shaped grooves.

[0009] As a further solution of the present invention: the limiting mechanism further includes a receiving groove opened on one side of the rotating block, and a torsion spring is engaged between one end of the inner wall of the receiving groove and the fixed block.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] By setting up a clamping mechanism, the clamping mechanism can clamp PCB boards of different thicknesses, so that during the welding process, PCB boards of different thicknesses can be properly clamped and conveyed without additional adjustment operations, thereby improving the work efficiency of the welding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 For the utility model Figure 1 A partial enlarged view of the middle part;

[0014] Figure 3 This is a schematic diagram of the installation position of the gear of the present invention;

[0015] Figure 4 For the utility model Figure 3 A partial enlarged view of point B in the middle;

[0016] Figure 5 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0017] Figure 6 This is a schematic diagram of the internal structure of the limiting mechanism of the utility model;

[0018] Figure 7 This is a schematic diagram of the installation of the torsion spring of the present invention.

[0019] In the figure: 1. Welding machine; 2. Upper cover; 3. Rotating motor; 4. Protective cover; 5. Synchronous pulley; 6. Rotating shaft; 7. Transmission belt; 8. External groove; 9. Mounting slot; 10. Gear; 11. Rubber sleeve No. 1; 12. Fixed block; 13. Rotating block; 14. Rubber sleeve No. 2; 15. Inclined surface; 16. Arc groove; 17. Movable column; 18. Accommodating slot; 19. Torsion spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 7 In an embodiment of the present invention, a patch component welding furnace includes a welding machine 1, an upper cover 2 is installed on the top of the welding machine 1, and a hot air mechanism that penetrates into the inner cavity of the upper cover 2 is installed on the top of the upper cover 2. A mounting slot 9 is opened inside the welding machine 1, and a protective cover 4 is installed at the upper opening of the mounting slot 9. A conveying mechanism that penetrates to one end of the outside of the welding machine 1 is installed inside the mounting slot 9; the conveying mechanism includes a rotating motor 3 installed at one end of the welding machine 1, and two meshing gears 10 are provided inside the mounting slot 9. One gear 10 is connected to the output end of the rotating motor 3 through a rotating shaft and a coupling. One end of the two gears 10 is connected to a synchronous shaft that penetrates into the inside of the mounting slot 9, and two sets of transmission components are rotatably installed on the inner wall of the mounting slot 9.

[0022] In this embodiment, the rotary motor 3 is first activated, which drives the connected gear 10 to rotate. This gear 10 then drives another meshing gear 10 to rotate. The two rotating gears 10 drive the two transmission assemblies to clamp and transmit the PCB relative to each other. A PCB with SMD electronic components is then placed between the two transmission assemblies. During this process, the limiting mechanisms on the transmission assemblies clamp the PCB, enabling the transmission assemblies to transport the PCB.

[0023] It should be noted that: an external air pump delivers heated nitrogen to the hot air mechanism, and the heated nitrogen is blown out from the nozzle of the hot air mechanism, and then acts on the solder paste on the PCB board. Under the action of high temperature, the solder paste melts and solders the electronic components to the PCB board. After that, it cools down to form effective soldering.

[0024] Please refer to Figure 4The two transmission components are symmetrically arranged up and down. One set of transmission components includes four synchronous wheels 5. The four synchronous wheels 5 are distributed in a rectangular shape. The two synchronous wheels 5 distributed along the length direction of the installation groove 9 are connected by a transmission belt 7. The two synchronous wheels 5 distributed along the width direction of the installation groove 9 are synchronously connected by a rotating shaft 6. The outer periphery of the transmission belt 7 is provided with an inwardly recessed outer groove 8. A limiting mechanism is installed inside the outer groove 8. The limiting mechanism is located on the inner side of the outer groove 8. The two gears 10 are coaxially connected to the two synchronous wheels 5 symmetrically distributed up and down through a synchronous shaft.

[0025] In this embodiment, when the two gears 10 rotate, the two gears 10 respectively drive one synchronous wheel 5 in the two transmission components to rotate, and the synchronous wheel 5 drives the other three synchronous wheels 5 in one group to rotate through the transmission belt 7 and the rotating shaft 6. At this time, the transmission directions of the upper and lower transmission belts 7 are opposite, and the multiple limiting mechanisms are transmitted along with the transmission belt 7.

[0026] Please refer to Figure 5 、 Figure 6 and Figure 7 The limiting mechanism includes an annular wall No. 1 rubber sleeve 11 integrally formed on the inner wall of the outer groove 8, and a fixed block 12 is inserted into the interior of the No. 1 rubber sleeve 11 through interference fit. A rotating block 13 is rotatably installed on one end of the fixed block 12 located outside the No. 1 rubber sleeve 11, and a No. 2 rubber sleeve 14 is inserted into the outer wall of the rotating block 13 through interference fit. The end of the No. 2 rubber sleeve 14 away from the No. 1 rubber sleeve 11 is formed with a slope 15. The limiting mechanism also includes two arc grooves 16 provided on the inner side of the rotating portion of the fixed block 12 and movable columns 17 integrally formed on both sides of the rotating block 13. The movable columns 17 are movably connected to the inner wall of the arc groove 16. The limiting mechanism also includes a receiving groove 18 provided on one side of the rotating block 13, and a torsion spring 19 is engaged between one end of the inner wall of the receiving groove 18 and the fixed block 12.

[0027] In this embodiment, during the transmission of the transmission belt 7 in the conveying assembly, the plurality of limiting mechanisms move accordingly, placing the PCB board between the two transmission belts 7. At this time, the top and bottom surfaces of the PCB board are in contact with the upper and lower No. 2 rubber sleeves 14. Figure 5 As shown, at this time, the two No. 2 rubber sleeves 14 clamp the PCB board.

[0028] When processing PCBs of different thicknesses, especially when the thickness of the PCB board increases, the second rubber sleeve 14 is forced to drive the rotating block 13 to rotate, and the rotating rotating block 13 drives the movable column 17 to rotate on the inner wall of the arc groove 16. At this time, the distance between the second rubber sleeves 14 in the upper and lower transmission assemblies changes to meet the processing requirements of different PCB boards.

[0029] During the above process, the rotating rotating block 13 drives one end of the torsion spring 19 to rotate accordingly, while the end of the torsion spring 19 engaged with the fixed block 12 remains stationary. At this time, the torsion spring 19 is twisted, and the twisted torsion spring 19 has a reset force. The reset force will cause the rotating block 13 to drive the second rubber sleeve 14 to stably clamp the PCB board; the setting of the arc groove 16 can prevent the rotating block 13 from being over-reset.

[0030] When the limiting mechanism needs to be replaced due to fatigue or wear after long-term use, the fixed block 12 can be pulled out from the No. 1 rubber sleeve 11 by applying force, and when the No. 2 rubber sleeve 14 is excessively worn, the No. 2 rubber sleeve 14 can also be replaced by pulling it out from the rotating block 13.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A soldering furnace for patch components, comprising a soldering machine (1), wherein an upper cover (2) is installed at the top of the soldering machine (1), and a hot air mechanism penetrating into the inner cavity of the upper cover (2) is installed at the top of the upper cover (2), characterized in that: The welding machine (1) is provided with an installation slot (9) inside, a protective cover (4) is installed at the upper opening of the installation slot (9), and a conveying mechanism is installed inside the installation slot (9) and extends to one end of the outside of the welding machine (1); the conveying mechanism comprises a rotating motor (3) installed at one end of the welding machine (1), and two meshing gears (10) are arranged inside the installation slot (9), one of the gears (10) is connected to the output end of the rotating motor (3) via a rotating shaft and a coupling, one end of the two gears (10) are connected to a synchronous shaft extending through the inside of the installation slot (9), and two sets of transmission components are rotatably installed on the inner wall of the installation slot (9).

2. The chip component welding furnace according to claim 1, characterized in that: The two transmission assemblies are symmetrically arranged in the upper and lower parts, and one group of the transmission assemblies comprises four synchronous wheels (5), which are arranged in a rectangular shape. The two synchronous wheels (5) arranged in the length direction of the installation groove (9) are connected by transmission through a transmission belt (7), and the two synchronous wheels (5) arranged in the width direction of the installation groove (9) are synchronously connected through a rotating shaft (6). The outer periphery of the transmission belt (7) is provided with an inwardly recessed outer groove (8), and a limiting mechanism is arranged inside the outer groove (8), and the limiting mechanism is located on the inner side of the outer groove (8).

3. The chip component welding furnace according to claim 2, characterized in that: The two gears (10) are coaxially connected to two synchronous wheels (5) symmetrically distributed up and down via a synchronous shaft.

4. The chip component welding furnace according to claim 3, characterized in that: The limiting mechanism comprises a first rubber sleeve (11) having an annular wall integrally formed on the inner wall of the outer groove (8); a fixing block (12) is inserted into the interior of the first rubber sleeve (11) by interference fit; a rotating block (13) is rotatably mounted on one end of the fixing block (12) located outside the first rubber sleeve (11); a second rubber sleeve (14) is inserted into the outer wall of the rotating block (13) by interference fit; and a slope (15) is formed on one end of the second rubber sleeve (14) away from the first rubber sleeve (11).

5. The chip component welding furnace according to claim 4, characterized in that: The limiting mechanism further comprises two arc-shaped grooves (16) formed on the inner side of the rotating part of the fixed block (12) and movable columns (17) integrally formed on both sides of the rotating block (13), wherein the movable columns (17) are movably connected to the inner walls of the arc-shaped grooves (16).

6. The SMD component welding furnace according to claim 5, characterized in that: The limiting mechanism further comprises a receiving groove (18) formed on one side of the rotating block (13), and a torsion spring (19) is engaged between one end of the inner wall of the receiving groove (18) and the fixed block (12).

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