PCB hot air leveling auxiliary device

Abstract

The utility model relates to the technical field of PCBs, in particular to a PCB hot air leveling auxiliary device which comprises a shell, the inner bottom wall of the shell is fixedly connected with an electric push rod, the top end of the electric push rod is fixedly connected with a limiting plate, the inner wall of the limiting plate is provided with a square groove hole, the inner wall of the square groove hole is rotationally connected with a roller, and the roller is fixedly connected with a motor. The outer surfaces of the rolling wheels are fixedly connected with rubber pads. Through the arrangement of the electric push rod, the limiting plate, the rollers and the rubber pads, during use, a circuit board is inserted into the limiting plate, the two sides of the circuit board slide downwards along the rubber pads fixed on the outer surfaces of the rollers, the rubber pads have an insulation effect, sparks generated by friction between the rubber pads and the circuit board can be avoided, the distance between the rollers on the two sides of the limiting plate is wide, and the service life of the circuit board is prolonged. The circuit board limiting device can adapt to the thickness of most circuit boards and prevent the circuit boards from bending during hot air treatment and friction damage during up-down sliding, and the electric push rod is used for pushing the limiting plate to move up and down, so that the effects of limiting the circuit boards and preventing damage caused by friction after deformation are achieved.

Description

Technical Field

[0001] The present invention relates to a hot air leveling manufacturing technology for circuit boards, and in particular to a PCB hot air leveling auxiliary device. Background Art

[0002] PCB (Printed Circuit Board), also known as printed circuit board, is an important electronic component, a support for electronic components, and a carrier for electrical connections of electronic components. Because it is made using electronic printing technology, it is called a "printed" circuit board.

[0003] However, the entire circuit board production process is complicated, especially during the hot air leveling process. Because the air blades are closely spaced, the PCB will bend and deform at high temperatures. The board surface is easily contacted by the air blades, resulting in scratches on the board surface, causing defects such as scratches and scrapping, which brings many inconveniences to production. Moreover, the current PCB panels are generally large in size, and the air blades are less than 3cm apart. At high temperatures, the PCB is prone to bowing and bending, resulting in direct contact with the air blades, causing scratches and scrapping defects. Utility Model Content

[0004] The purpose of the present utility model is to provide a PCB hot air leveling auxiliary device. On the basis of traditional hot air leveling, the device is optimized to prevent the PCB from contacting the air knife through mechanical processing and the addition of auxiliary devices. In order to meet the needs of hot air leveling, double-sided guide rails are used to fix the PCB in an up and down operation mode to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A PCB hot air leveling auxiliary device, comprising

[0007] The shell has an electric push rod fixedly connected to the inner bottom wall of the shell, and the top of the electric push rod is fixedly connected to a limit plate, the inner wall of the limit plate is provided with a square slot hole, the inner wall of the square slot hole is rotatably connected to a roller, the outer surface of the roller is fixedly connected to a rubber pad, one side of the electric push rod is fixedly connected to a fixing block, one side of the fixing block is provided with a threaded hole, the inner wall of the threaded hole is threadedly connected to a bolt, one side of the outer surface of the bolt is threadedly connected to a connecting plate, the top of the connecting plate is fixedly connected to a splint, and the inner wall of the splint is provided with an air inlet slot.

[0008] Preferably, a slot is provided on a side of the inner bottom wall of the housing close to the electric push rod, and a guide plate is fixedly connected to the inner wall of the slot.

[0009] Preferably, a connecting groove is provided on one side of the fixing block, and the inner wall of the connecting groove is clamped to the outer surface of the connecting plate.

[0010] Preferably, a placement groove is provided on one side of the shell, and a hot air blower is fixedly connected to the inner wall of the placement groove.

[0011] Preferably, a feed port is provided in the middle of the top end of the shell, and an air knife is fixedly connected to the inner wall of the feed port, and the distance between the air knives is 3 cm.

[0012] Preferably, the distance between the inner walls of the guide plates is 2 cm, and the distance between the rollers rotatably connected to the inner walls of the guide plates is 1.5 cm.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This PCB hot air leveling auxiliary device is equipped with an electric push rod, a limit plate, rollers and rubber pads. When in use, the circuit board is inserted into the limit plate, and the rubber pads fixed on the outer surface of the rollers on both sides of the circuit board slide downward. The rubber pads have an insulating effect, which can avoid sparks generated by friction with the circuit board. In addition, the rollers on both sides of the limit plate are spaced wide to adapt to the thickness of most circuit boards, preventing the circuit board from bending during hot air treatment and causing friction damage when sliding up and down. The electric push rod is used to push the limit plate up and down, thereby achieving the effect of limiting the circuit board and preventing damage caused by friction after deformation.

[0015] 2. This PCB hot air leveling auxiliary device is equipped with a fixing block, a threaded hole, a bolt, a connecting plate, a clamping plate and an air inlet slot. When in use, the bolt is connected to the threaded hole by rotating the bolt, and then the connecting plate is fixed in the fixing block by the bolt. The inside of the clamping plate connected to the connecting plate can limit the circuit board to prevent the circuit board from being deformed by hot air and the middle part of the circuit board from deforming and rubbing against the inlet and outlet of the device. The opening of the air inlet slot is used to expand the air inlet range, thereby achieving the effect of limiting the middle position of the circuit board and preventing friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall appearance of the utility model;

[0017] Figure 2 This is a disassembled schematic diagram of the guide plate, electric push rod, limit plate, roller and rubber pad of the utility model;

[0018] Figure 3 This is a disassembled schematic diagram of the fixing block, threaded holes, bolts, connecting plates, clamping plates and air inlet slots of the present invention;

[0019] Figure 4 This is a schematic cross-sectional view of the interior of the housing of the present invention from the front.

[0020] In the figure: 1. Shell; 2. Electric push rod; 3. Limit plate; 4. Roller; 5. Rubber pad; 6. Fixing block; 7. Threaded hole; 8. Bolt; 9. Connecting plate; 10. Clamp; 11. Air inlet slot; 12. Guide plate; 13. Hot air blower; 14. Feed port; 15. Air knife. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figures 1-4 As shown, the utility model provides a technical solution:

[0023] A PCB hot air leveling auxiliary device, comprising

[0024] The shell 1 has an electric push rod 2 fixedly connected to the bottom wall of the shell 1, and the top of the electric push rod 2 is fixedly connected to the limit plate 3. The inner wall of the limit plate 3 is provided with a square slot, and the inner wall of the square slot is rotatably connected to the roller 4. The outer surface of the roller 4 is fixedly connected with a rubber pad 5. One side of the electric push rod 2 is fixedly connected to a fixing block 6, and one side of the fixing block 6 is provided with a threaded hole 7. The inner wall of the threaded hole 7 is threadedly connected with a bolt 8. One side of the outer surface of the bolt 8 is threadedly connected to a connecting plate 9. The top of the connecting plate 9 is fixedly connected to a splint 10, and the inner wall of the splint 10 is provided with an air inlet slot 11. Through the arrangement of the electric push rod 2, the limit plate 3, the roller 4 and the rubber pad 5, when in use, the circuit board is inserted into the limit plate 3, and the rubber pads 5 fixed on the outer surface of the roller 4 on both sides of the circuit board slide downward. The rubber pad 5 has an insulating effect, which can avoid sparks generated by friction with the circuit board, and The spacing between the rollers 4 on both sides of the limiting plate 3 is wide, which can adapt to the thickness of most circuit boards, preventing the circuit boards from bending during hot air treatment and causing friction damage when sliding up and down. The electric push rod 2 is used to push the limiting plate 3 to move up and down, thereby achieving the effect of limiting the circuit board and preventing damage caused by friction after deformation. Through the arrangement of the fixing block 6, the threaded hole 7, the bolt 8, the connecting plate 9, the clamping plate 10 and the air inlet slot 11, when in use, the bolt 8 is connected to the threaded hole 7 by rotating the bolt 8, and then the connecting plate 9 is fixed in the fixing block 6 by the bolt 8. The inside of the clamping plate 10 connected to the connecting plate 9 can limit the circuit board to prevent the circuit board from being deformed by hot air and the middle part of the circuit board from deforming and rubbing against the inlet and outlet of the device. The opening of the air inlet slot 11 is used to expand the air inlet range, thereby achieving the effect of limiting the middle position of the circuit board and preventing friction.

[0025] In this embodiment, preferably, a card slot is opened on one side of the inner bottom wall of the housing 1 close to the electric push rod 2, and a guide plate 12 is fixedly connected to the inner wall of the card slot. By setting the guide plate 12, when in use, the guide plate 12 is installed, and the guide plate 12 is used to limit the movement of the electric push rod 2 and the limit plate 3 to prevent shaking during movement, causing the limit plate 3 to deviate, thereby achieving the effect of limiting the limit plate 3;

[0026] In this embodiment, preferably, a connecting groove is opened on one side of the fixing block 6, and the inner wall of the connecting groove is clamped to the outer surface of the connecting plate 9. The opening of the placement groove is used to limit the position of the connecting plate 9 when it is installed, thereby achieving the effect of limiting the position of the connecting plate 9;

[0027] In this embodiment, preferably, a placement groove is opened on one side of the housing 1, and a hot air blower 13 is fixedly connected to the inner wall of the placement groove. Through the setting of the hot air blower 13, when in use, through the installation of the hot air blower 13, the hot air blower 13 is connected to an external power supply to perform hot air treatment on the tin on the surface of the internal circuit board to dry it, which is convenient for subsequent processing, thereby achieving the effect of drying the tin;

[0028] In this embodiment, preferably, a feed port 14 is opened in the middle of the top of the shell 1, and an air knife 15 is fixedly connected to the inner wall of the feed port 14. The spacing between the air knives 15 is 3 cm. Through the setting of the feed port 14 and the air knife 15, when in use, the feed port 14 is installed, and the feed port 14 facilitates the up and down movement of the circuit board. Then, through the installation of the air knife 15, the air knife 15 is used to guide the hot air to be discharged outward and limit the wind direction of the hot air, thereby achieving the effect of transmitting hot air to guide the circuit board to move up and down. The spacing of 3 cm can adapt to the thickness of most circuit boards;

[0029] In this embodiment, preferably, the inner wall spacing of the guide plate 12 is 2 cm. The spacing between the rollers 4 rotatably connected to the inner wall of the guide plate 12 is 1.5 cm. The spacing of the rollers 4 of 1.5 cm can adapt to most circuit boards, most of which have thicknesses of 0.8 mm, 1.0 mm, and 1.2 mm.

[0030] When a PCB hot air leveling auxiliary device of this embodiment is in use, the guide plate 12 is installed, and the guide plate 12 is used to limit the electric push rod 2 and the limit plate 3 when they move, to prevent shaking during movement, causing the limit plate 3 to deflect, thereby achieving the effect of limiting the limit plate 3. By installing the hot air blower 13, the hot air blower 13 can be connected to an external power supply to perform hot air treatment on the tin on the surface of the internal circuit board to dry it, which is convenient for subsequent processing, thereby achieving the effect of drying the tin. By installing the feed port 14, the feed port 14 is convenient for the circuit board to move up and down, and then by installing the wind knife 15, the wind knife 15 is used to guide the hot air to be discharged outward, and limit the wind direction of the hot air, thereby achieving the effect of transmitting hot air to guide the circuit board to move up and down. The circuit board is inserted into the limit plate 3, and the rubber pads 5 fixed on both sides of the circuit board along the outer surface of the roller 4 When sliding downward, the rubber pad 5 has an insulating effect, which can avoid sparks generated by friction with the circuit board, and the spacing between the rollers 4 on both sides of the limit plate 3 is relatively wide, which can adapt to the thickness of most circuit boards to prevent the circuit board from bending during hot air treatment and causing friction damage when sliding up and down. The electric push rod 2 is used to push the limit plate 3 to move up and down, so as to limit the circuit board and prevent damage caused by friction after deformation. The bolt 8 is connected to the threaded hole 7 by rotating the bolt 8, and the connecting plate 9 is fixed in the fixed block 6 by the bolt 8. The inside of the splint 10 connected to the connecting plate 9 can limit the circuit board to prevent the middle part of the circuit board from deforming and rubbing against the inlet and outlet of the device when the circuit board is deformed by hot air. The opening of the air inlet slot 11 is used to expand the air inlet range, thereby limiting the middle position of the circuit board and preventing friction.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCB hot air leveling auxiliary device, characterized by: include A housing (1) is provided, wherein the inner bottom wall of the housing (1) is fixedly connected to an electric push rod (2), the top end of the electric push rod (2) is fixedly connected to a limit plate (3), the inner wall of the limit plate (3) is provided with a square slot hole, the inner wall of the square slot hole is rotatably connected to a roller (4), the outer surface of the roller (4) is fixedly connected to a rubber pad (5), one side of the electric push rod (2) is fixedly connected to a fixed block (6), one side of the fixed block (6) is provided with a threaded hole (7), the inner wall of the threaded hole (7) is threadedly connected to a bolt (8), one side of the outer surface of the bolt (8) is threadedly connected to a connecting plate (9), the top end of the connecting plate (9) is fixedly connected to a clamping plate (10), and the inner wall of the clamping plate (10) is provided with an air inlet slot (11).

2. The PCB hot air leveling auxiliary device according to claim 1, characterized in that: A slot is provided on one side of the inner bottom wall of the housing (1) close to the electric push rod (2), and a guide plate (12) is fixedly connected to the inner wall of the slot.

3. The PCB hot air leveling auxiliary device according to claim 1, characterized in that: A connection groove is provided on one side of the fixing block (6), and the inner wall of the connection groove is clamped to the outer surface of the connection plate (9).

4. The PCB hot air leveling auxiliary device according to claim 1, characterized in that: A placement groove is provided on one side of the housing (1), and a hot air blower (13) is fixedly connected to the inner wall of the placement groove.

5. The PCB hot air leveling auxiliary device according to claim 1, characterized in that: A feed port (14) is provided in the middle of the top of the shell (1), and an air knife (15) is fixedly connected to the inner wall of the feed port (14), and the distance between the air knives (15) is 3 cm.

6. The PCB hot air leveling auxiliary device according to claim 2, characterized in that: The spacing between the inner walls of the guide plate (12) is 2 cm. The spacing between the rollers (4) rotatably connected to the inner walls of the guide plate (12) is 1.5 cm.

Images