Jig for PCB welding

Abstract

The invention belongs to the technical field of PCB production, and discloses a jig for PCB welding. Comprising a base and a rotating seat, the rotating seat is rotationally arranged on the base, the device further comprises a U-shaped frame, the U-shaped frame is arranged at the top of the rotating seat in a sliding mode, a protection assembly used for protecting important parts on a PCB is arranged on the U-shaped frame, and a cleaning assembly used for cleaning the tin soldering position is further arranged on the U-shaped frame. By arranging the protection assembly, a PCB is clamped and fixed through the rotating seat and the base, when important parts on the PCB need to be protected in the welding process, a first motor is started to drive a first circular gear to walk on a first rack, a U-shaped frame can be moved to the important parts, and the important parts on the PCB can be protected; the electric push rod is started to drive the mounting plate and the cooling part to move downwards, the cooling bag body is made of a soft material, the cooling bag body can cover the top of the important part, and the cooling liquid in the cooling bag body can prevent the important part from being influenced by high temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB production, and more specifically, to a welding jig for PCB. Background Art

[0002] A PCB is a board that forms electrical connections between electronic components by patterning conductive copper foil on the surface of insulating material. Its main function is to achieve electrical connections between electronic components through these copper foil lines and to support components fixed on the board. During the soldering process of the PCB, a special jig is required to fix the PCB, and then the jig and the PCB are sent to the soldering equipment for soldering.

[0003] The current PCB board fixture is difficult to protect the components on the PCB board that are not resistant to high temperatures. The PCB board may be equipped with some components that are not resistant to high temperatures or are easily damaged by high temperatures. During the welding process of the PCB board, the entire PCB board and the components thereon will be at high temperatures, and the current PCB board cannot protect the components that are not resistant to high temperatures, which makes these parts not only easily damaged. Summary of the invention

[0004] The present invention solves the problem in the background technology that the current PCB board fixture is difficult to protect the components on the PCB board that are not resistant to high temperatures, and proposes a PCB board welding fixture.

[0005] To achieve the above object, the present invention provides the following technical solution: a jig for PCB board welding, comprising a base and a rotating seat, wherein the rotating seat is rotatably arranged on the base, and further comprising: A U-shaped frame, the U-shaped frame is slidably arranged on the top of the rotating seat, the U-shaped frame is provided with a protection component for protecting important components on the PCB board, and the U-shaped frame is also provided with a cleaning component for cleaning the soldering position; Four shells are respectively arranged at four corners of the top of the rotating seat, and a display component for clamping the display base and the rotating seat to hold the PCB board in place is arranged in the shell.

[0006] Furthermore, the protection component includes an electric push rod fixedly connected to the top of the U-shaped frame, the output end of the electric push rod is fixedly connected to a mounting plate, the bottom of the mounting plate is fixedly connected to a cooling component, the cooling component includes a hard cooling box and a soft cooling bag body that are interconnected and fixed, the cooling bag body is located at the bottom, and coolant is arranged inside the cooling component.

[0007] Furthermore, a moving component for driving the U-shaped frame to move on the rotating seat is provided on the rotating seat, and the moving component includes a first motor fixedly connected to the U-shaped frame, and the output shaft of the first motor is fixedly connected to a first circular gear. Two sliding grooves are provided on the U-shaped frame, and two limit bars are fixedly connected to the rotating seat. The U-shaped frame is slidably connected to the limit bars through the sliding grooves, and one of the limit bars is fixedly connected to a first rack meshing with the first circular gear.

[0008] Furthermore, the cleaning component includes a cylinder fixedly connected to the mounting plate, a second motor fixedly connected to the top of the cylinder, an output shaft of the second motor fixedly connected to a first rotating shaft rotatably connected to the cylinder, a plurality of first blades fixedly connected to the outer wall of the first rotating shaft, two transverse tubes connected and fixedly connected to the cylinder, a plurality of air outlet pipes connected and fixedly connected to the transverse tubes, and the air outlet pipes can be bent and shaped arbitrarily.

[0009] Furthermore, one end of the air outlet pipe is provided with an auxiliary air outlet component for increasing the air outlet area, the auxiliary air outlet component includes an air outlet tube fixedly connected to one end of the air outlet pipe, the inner wall of the air outlet tube is fixedly connected to a fixing frame, a rotating tube is rotatably connected to the fixing frame, one end of the rotating tube is fixedly connected to an elastic tube in a bent state, one end of the elastic tube is fixedly connected to a connecting tube, a plurality of second blades are fixedly connected to the outer wall of the rotating tube, one end of the air outlet tube is fixedly connected to an elliptical ring via a connecting rod, the elliptical ring is used to limit the rotation range of the connecting tube, and the connecting tube is in contact with the end point of the long axis of the elliptical ring.

[0010] Furthermore, a box body is fixedly connected to the cylinder body through a connecting plate, and the box body is fixedly connected to the side wall of the cooling box, a second rotating shaft is rotatably connected to the box body, one end of the second rotating shaft and the bottom end of the first rotating shaft are fixedly connected with a first bevel gear that meshes with each other, a third rotating shaft is rotatably connected to the box body, an outer wall of the third rotating shaft and the other end of the second rotating shaft are fixedly connected with a second bevel gear that meshes with each other, a spiral sheet is fixedly connected to the outer wall of the third rotating shaft, and a partition is fixedly connected to the inner wall of the cooling box, the partition divides the cooling component into two areas, and two through openings are provided on the partition.

[0011] Further, the display component includes a lifting column arranged below the shell, the bottom end of the lifting column is arranged on the top of the base, the rotating seat is provided with four circular openings, the lifting column slides in the circular opening, the top of the lifting column is fixedly connected to an L-shaped plate, the top of the L-shaped plate is fixedly connected to a connecting rope, the top of the rotating seat is rotatably connected to a fourth rotating shaft and a fifth rotating shaft through a fixed plate, the fourth rotating shaft is fixedly connected to a guide wheel, the connecting rope passes around the guide wheel, the outer wall of the fifth rotating shaft is fixedly connected to a winding wheel, the connecting rope is wrapped and fixedly connected to the surface of the winding wheel, the outer wall of the connecting rope is fixedly connected to a circular piece, the top of the rotating seat is fixedly connected to a connecting plate, a spring is fixedly connected between the connecting plate and the circular piece, the outer wall of the fifth rotating shaft is fixedly connected to a second circular gear, the second circular gear is meshed with a second rack, one end of the second rack is fixedly connected to a connecting rod slidably inserted on the side wall of the shell, and a scale is provided on the connecting rod.

[0012] Furthermore, the base is rotatably connected to a sixth rotating shaft via a fixed plate, a rotating plate is fixedly connected to an outer wall of the sixth rotating shaft, an L-shaped block is fixedly connected to the rotating seat, a rectangular groove is provided in the L-shaped block, the rotating plate is slidably inserted in the rectangular groove, a threaded rod is threadedly connected to the L-shaped block, and the bottom end of the threaded rod is rotatably connected to the rotating plate.

[0013] The technical effects and advantages of a PCB welding fixture of the present invention are as follows: (1) By setting up a protection component, the PCB board is clamped and fixed by a rotating seat and a base. When it is necessary to protect important components on the PCB board during welding, the first motor is started to drive the first circular gear to move on the first rack, so that the U-shaped frame can be moved to the important components, and the electric push rod is started to drive the mounting plate and the cooling component to move downward. Since the cooling bag body of the cooling component is made of soft material, the cooling bag body can cover the top of the important components, and the coolant in the cooling bag body can prevent the important components from being affected by high temperature.

[0014] (2) By setting a cleaning component, before soldering the soldering position, the second motor can be started to drive the first blade to rotate. The rotation of the first blade can generate wind to blow toward the horizontal pipe, and the wind will be discharged from the air outlet pipe. The wind blows toward the welding position to blow away dust and impurities to clean it. When the wind passes through the air outlet tube, the wind can drive the second blade to rotate. The rotation of the second blade can drive the rotating tube, the elastic tube and the connecting tube to rotate, so that the connecting tube rotates along the inner circle of the elliptical ring, and the wind enters the rotating tube and is discharged from the connecting tube. The continuous rotation of the connecting tube can make the wind swing left and right to achieve a uniform air outlet effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2It is a cross-sectional schematic diagram of the U-shaped frame and the cooling component in the present invention; Figure 3 It is a cross-sectional schematic diagram of the cooling component and the cylinder in the present invention; Figure 4 It is a cross-sectional schematic diagram of the air outlet tube in the present invention; Figure 5 It is a schematic diagram of the base and rotating seat structure in the present invention; Figure 6 It is a schematic cross-sectional view of the housing in the present invention; Figure 7 For the present invention Figure 6 The enlarged schematic diagram at A in the middle; Figure 8 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle; Fig. 9 It is a schematic cross-sectional view of the cooling component in the present invention.

[0016] In the figure: 1. Base; 2. Rotating seat; 3. U-shaped frame; 4. Electric push rod; 5. Mounting plate; 6. Cooling component; 601. Cooling bag; 602. Cooling box; 7. First motor; 8. First circular gear; 9. Slide; 10. Limiting strip; 11. First rack; 12. Cylinder; 13. Second motor; 14. First rotating shaft; 15. First blade; 16. Horizontal pipe; 17. Air outlet pipe; 18. Air outlet cylinder; 19. Fixed frame; 20. Rotating pipe; 21. Elastic pipe; 22. Connecting pipe; 23. Second blade; 24. Oval ring; 25. Box; 26. The second rotating shaft; 27, the first bevel gear; 28, the third rotating shaft; 29, the second bevel gear; 30, the spiral piece; 31, the spacer; 32, the through-port; 33, the housing; 34, the round port; 35, the lifting column; 36, the L-shaped plate; 37, the connecting rope; 38, the fourth rotating shaft; 39, the guide wheel; 40, the fifth rotating shaft; 41, the winding wheel; 42, the round piece; 43, the connecting plate; 44, the spring; 45, the second circular gear; 46, the second rack; 47, the connecting rod; 48, the sixth rotating shaft; 49, the rotating plate; 50, the L-shaped block; 51, the rectangular groove; 52, the threaded rod. DETAILED DESCRIPTION

[0017] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0018] Reference Figure 1 - Fig. 9A PCB welding fixture comprises a base 1 and a rotating base 2, wherein the rotating base 2 is rotatably arranged on the base 1, and further comprises: A U-shaped frame 3 is slidably arranged on the top of the rotating seat 2. A protection component for protecting important components on the PCB is arranged on the U-shaped frame 3. A cleaning component for cleaning the soldering position is also arranged on the U-shaped frame 3. Four shells 33, the four shells 33 are respectively arranged at the four corners of the top of the rotating base 2, and the shells 33 are provided with display components for clamping the PCB board in place by the display base 1 and the rotating base 2; When in use, open the rotating seat 2, set the PCB board to be soldered on the base 1, and clamp the PCB board between the base 1 and the rotating seat 2 through the rotating seat 2. The display component can display whether the base 1 and the rotating seat 2 clamp the PCB board in place. Before welding, the important components on the PCB board are protected from high temperature by the protection component on the U-shaped frame 3. At the same time, the cleaning component can clean the position to be soldered on the PCB board to remove dust and impurities.

[0019] Reference Figure 1 , Figure 2 and Fig. 9 The protection component includes an electric push rod 4 fixedly connected to the top of the U-shaped frame 3, the output end of the electric push rod 4 is fixedly connected to a mounting plate 5, the bottom of the mounting plate 5 is fixedly connected to a cooling component 6, the cooling component 6 includes a hard cooling box 602 and a soft cooling bag body 601 which are connected and fixed to each other, the cooling bag body 601 is located at the bottom, and the cooling component 6 is provided with a coolant inside; when it is necessary to protect the important components on the PCB board before welding, the U-shaped frame 3 is moved to a suitable position, the electric push rod 4 is started, the electric push rod 4 drives the mounting plate 5 to move downward, and the mounting plate 5 drives the cooling component 6 to move downward, because the cooling bag body 601 of the cooling component 6 is made of soft material, the cooling bag body 601 can cover the important components, and the coolant in the cooling bag body 601 can keep the important components at a low temperature in a high temperature environment to prevent the important components from being affected by high temperature.

[0020] Reference Figure 1 and Figure 2, a moving assembly for driving the U-shaped frame 3 to move on the rotating seat 2 is provided on the rotating seat 2, and the moving assembly includes a first motor 7 fixedly connected to the U-shaped frame 3, the output shaft of the first motor 7 is fixedly connected to a first circular gear 8, two slide grooves 9 are provided on the U-shaped frame 3, and two limit bars 10 are fixedly connected to the rotating seat 2, and the U-shaped frame 3 is slidably connected to the limit bar 10 through the slide groove 9, and one of the limit bars 10 is fixedly connected to a first rack 11 meshing with the first circular gear 8; when it is necessary to move the U-shaped frame 3 to a certain position, the first motor 7 is started, the first motor 7 drives the first circular gear 8 to rotate, and the first circular gear 8 walks on the first rack 11, thereby driving the U-shaped frame 3 to walk on the rotating seat 2, so that the U-shaped frame 3 drives the protection assembly to walk to a suitable position on the rotating seat 2, and the cooling component 6 can also be moved to the welding position after welding, and the cooling component 6 can also cool the welding position.

[0021] Reference Figure 2 and Figure 3 The cleaning component includes a cylinder 12 fixedly connected to the mounting plate 5, a second motor 13 is fixedly connected to the top of the cylinder 12, an output shaft of the second motor 13 is fixedly connected to a first rotating shaft 14 rotatably connected to the cylinder 12, a plurality of first blades 15 are fixedly connected to the outer wall of the first rotating shaft 14, two transverse tubes 16 are connected and fixedly connected to the cylinder 12, a plurality of air outlet pipes 17 are connected and fixedly connected to the transverse tubes 16, and the air outlet pipes 17 can be bent and shaped arbitrarily; before welding, the welding position on the PCB board needs to be cleaned, the second motor 13 is started, the second motor 13 drives the first rotating shaft 14 to rotate, the first rotating shaft 14 drives the first blades 15 to rotate, the rotation of the first blades 15 can generate wind, the wind enters the two transverse tubes 16, the wind will be discharged from the air outlet pipe 17, the wind blows to the welding position, blows away dust and impurities, and achieves the purpose of cleaning the PCB board.

[0022] Reference Figure 3 and Figure 4One end of the air outlet pipe 17 is provided with an auxiliary air outlet component for increasing the air outlet area, and the auxiliary air outlet component includes an air outlet cylinder 18 fixedly connected to one end of the air outlet pipe 17, and the inner wall of the air outlet cylinder 18 is fixedly connected to a fixing frame 19, and a rotating tube 20 is rotatably connected to the fixing frame 19, and one end of the rotating tube 20 is fixedly connected to an elastic tube 21 in a bent state, and one end of the elastic tube 21 is fixedly connected to a connecting tube 22, and a plurality of second blades 23 are fixedly connected to the outer wall of the rotating tube 20, and one end of the air outlet cylinder 18 is fixedly connected to an elliptical ring 24 through a connecting rod, and the elliptical ring 24 is used to limit the connecting tube 2 2, the connecting tube 22 contacts the end point of the long axis of the elliptical ring 24; in the process of wind being discharged from the air outlet pipe 17, the wind will pass through the air outlet cylinder 18, and part of the wind will be discharged directly from one end of the air outlet cylinder 18, and the wind will drive the second blade 23 to rotate, and the second blade 23 can drive the rotating tube 20, the elastic tube 21 and the connecting tube 22 to rotate, and the connecting tube 22 will continuously rotate along the inner circle of the elliptical ring 24, and part of the wind will enter the rotating tube 20, and the connecting tube 22 will continuously rotate to guide the wind out, and the wind will be discharged in a reciprocating swinging manner, so that the discharge area of ​​the wind is increased, and the cleaning effect on the PCB board can be better.

[0023] Reference Figure 2 , Figure 3 and Fig. 9 A box body 25 is fixedly connected to the cylinder 12 through a connecting plate, and the box body 25 is fixedly connected to the side wall of the cooling box 602. A second rotating shaft 26 is rotatably connected to the box body 25, and one end of the second rotating shaft 26 and the bottom end of the first rotating shaft 14 are fixedly connected with a first bevel gear 27 that meshes with each other. A third rotating shaft 28 is rotatably connected to the box body 25, and an outer wall of the third rotating shaft 28 and the other end of the second rotating shaft 26 are fixedly connected with a second bevel gear 29 that meshes with each other, and a spiral sheet 30 is fixedly connected to the outer wall of the third rotating shaft 28. A partition 31 is fixedly connected to the inner wall of the cooling box 602, and the partition 31 divides the cooling component 6 into two areas. The area above the partition 31 is the driving circulation area, i.e., the inside of the cooling box 602, and the area below the partition 31 is the cooling area, i.e., the inside of the cooling bag 601 , that is, the third shaft 28 and the spiral piece 30 are located in the driving circulation area, which are used to drive the coolant in the area, and the spacer 31 has two openings 32; during the cleaning process of the PCB board, the second motor 13 will drive the first shaft 14 to rotate, and the first shaft 14 will drive the second shaft 26 to rotate through the two first bevel gears 27 at the same time, and the second shaft 26 will drive the third shaft 28 to rotate through the two second bevel gears 29, and the third shaft 28 will drive the spiral piece 30 to rotate, and the rotation of the spiral piece 30 can drive the coolant above the spacer 31 to move in a certain direction. By setting two openings 32, the coolant can circulate between the driving circulation area of ​​the cooling box 602 and the cooling area of ​​the cooling bag body 601, so as to achieve rapid cooling and enhance the cooling effect of the cooling component 6.

[0024] Reference Figure 5 , Figure 6 and Figure 7 The display assembly includes a lifting column 35 arranged below the housing 33, the bottom end of the lifting column 35 is arranged on the top of the base 1, the rotating seat 2 is provided with four round openings 34, the lifting column 35 slides in the round openings 34, the top of the lifting column 35 is fixedly connected to an L-shaped plate 36, the top of the L-shaped plate 36 is fixedly connected to a connecting rope 37, the top of the rotating seat 2 is rotatably connected to a fourth rotating shaft 38 and a fifth rotating shaft 40 through a fixed plate, the fourth rotating shaft 38 is fixedly connected to a guide wheel 39, the connecting rope The fifth rotating shaft 40 is fixedly connected to a winding wheel 41 on its outer wall, the connecting rope 37 is wound around the surface of the winding wheel 41, the connecting rope 37 is fixedly connected to a disc 42 on its outer wall, the top of the rotating seat 2 is fixedly connected to a connecting plate 43, a spring 44 is fixedly connected between the connecting plate 43 and the disc 42, the outer wall of the fifth rotating shaft 40 is fixedly connected to a second circular gear 45, the upper part of the second circular gear 45 is meshed with a second rack 46, one end of the second rack 46 is fixedly connected to a sliding insert in the housing 33, the connecting rod 47 is provided with a scale on the connecting rod 47; after the PCB board is placed on the base 1, the rotating seat 2 is closed, the bottom end of the lifting column 35 will fall on the PCB board, the lifting column 35 moves upward relative to the rotating seat 2, the lifting column 35 drives the L-shaped plate 36 to move upward, the L-shaped plate 36 pulls the winding wheel 41 to rotate through the connecting rope 37, the spring 44 is compressed, the winding wheel 41 drives the fifth rotating shaft 40 to rotate, the fifth rotating shaft 40 drives the second circular gear 45 to rotate, the second circular gear 45 drives the fifth rotating shaft 40 to rotate, The second rack 46 moves, and the second rack 46 drives the connecting rod 47 to move, so that the connecting rod 47 gradually leaves the shell 33. The user can judge whether the rotating seat 2 is pressed into place according to the scale on the connecting rod 47. If the scales of the connecting rods 47 extending from the four corners are equal, it means that the distance between the base 1 and the rotating seat 2 is compatible with the thickness of the PCB board. If the scales on the connecting rods 47 at the four corners are not equal, it means that the distance between the base 1 and the rotating seat 2 is not compatible with the thickness of the PCB board, and the distance of the gap needs to be adjusted.

[0025] Reference Figure 1 , Figure 5 and Figure 8The base 1 is rotatably connected with a sixth rotating shaft 48 through a fixed plate, and a rotating plate 49 is fixedly connected to the outer wall of the sixth rotating shaft 48. An L-shaped block 50 is fixedly connected to the rotating seat 2. A rectangular groove 51 is opened in the L-shaped block 50, and the rotating plate 49 is slidably inserted in the rectangular groove 51. A threaded rod 52 is threadedly connected to the L-shaped block 50, and the bottom end of the threaded rod 52 is rotatably connected to the rotating plate 49; when it is necessary to adjust the distance between the base 1 and the rotating seat 2 to adapt to the thickness of the PCB board, the rotating block drives the threaded rod 52 to rotate, and the rotation of the threaded rod 52 can make the L-shaped block 50 and the rotating seat 2 move relative to the base 1, so that the rotating plate 49 is inserted into the rectangular groove 51, thereby adjusting the distance between the base 1 and the rotating seat 2.

[0026] Working principle: When in use, open the rotating seat 2, set the PCB board to be soldered on the base 1, clamp the PCB board between the base 1 and the rotating seat 2 through the rotating seat 2, and use the display component to display whether the base 1 and the rotating seat 2 clamp the PCB board in place. Before welding, the protection component on the U-shaped frame 3 protects the important parts on the PCB board from the influence of high temperature. At the same time, the cleaning component can clean the position to be soldered on the PCB board to remove dust and impurities; When it is necessary to protect important components on the PCB before welding, the U-shaped frame 3 is moved to a suitable position, and the electric push rod 4 is started. The electric push rod 4 drives the mounting plate 5 to move downward, and the mounting plate 5 drives the cooling component 6 to move downward. Since the cooling bag 601 of the cooling component 6 is made of soft material, the cooling bag 601 can cover the important components. The coolant in the cooling component 6 can keep the important components at a low temperature in a high temperature environment, thereby preventing the important components from being affected by high temperature. When the U-shaped frame 3 needs to be moved to a certain position, the first motor 7 is started, and the first motor 7 drives the first circular gear 8 to rotate, and the first circular gear 8 moves on the first rack 11, thereby driving the U-shaped frame 3 to move on the rotating seat 2, so that the U-shaped frame 3 drives the protection component to move to a suitable position on the rotating seat 2. After welding, the cooling component 6 can also be moved to the welding position, and the cooling component 6 can also cool the welding position; Before welding, the welding position on the PCB needs to be cleaned, and the second motor 13 is started. The second motor 13 drives the first rotating shaft 14 to rotate, and the first rotating shaft 14 drives the first blade 15 to rotate. The rotation of the first blade 15 can generate wind, and the wind enters the two horizontal pipes 16. The wind will be discharged from the air outlet pipe 17, and the wind will blow to the welding position to blow away dust and impurities, thereby achieving the purpose of cleaning the PCB board; When the wind is discharged from the air outlet pipe 17, the wind will pass through the air outlet cylinder 18, and part of the wind will be discharged directly from one end of the air outlet cylinder 18. The wind will drive the second blade 23 to rotate, and the second blade 23 can drive the rotating tube 20, the elastic tube 21 and the connecting tube 22 to rotate. The connecting tube 22 will continuously rotate along the inner circle of the elliptical ring 24, and part of the wind will enter the rotating tube 20. The connecting tube 22 continuously rotates to guide the wind out, and the wind will be discharged in a reciprocating swinging manner, so that the wind discharge area is increased, and the cleaning effect on the PCB board is better; During the cleaning process of the PCB board, the second motor 13 drives the first rotating shaft 14 to rotate, and the first rotating shaft 14 drives the second rotating shaft 26 to rotate through the two first bevel gears 27 at the same time, and the second rotating shaft 26 drives the third rotating shaft 28 to rotate through the two second bevel gears 29, and the third rotating shaft 28 drives the spiral piece 30 to rotate. The rotation of the spiral piece 30 can drive the coolant above the spacer 31 to move in a certain direction. By setting two through ports 32, the coolant can circulate between the driving circulation area of ​​the cooling box 602 and the cooling area of ​​the cooling bag body 601, so as to achieve rapid cooling and enhance the cooling effect of the cooling component 6; After the PCB board is placed on the base 1, the rotating base 2 is closed, and the bottom end of the lifting column 35 falls on the PCB board. The lifting column 35 moves upward relative to the rotating base 2, and the lifting column 35 drives the L-shaped plate 36 to move upward. The L-shaped plate 36 pulls the winding wheel 41 to rotate through the connecting rope 37, and the spring 44 is compressed. The winding wheel 41 drives the fifth rotating shaft 40 to rotate, and the fifth rotating shaft 40 drives the second circular gear 45 to rotate. The second circular gear 45 drives the second rack 46 to move, and the second rack 46 drives the connecting rod 47 to move, so that the connecting rod 47 gradually leaves the shell 33. The user can judge whether the rotating base 2 is pressed into place according to the scale on the connecting rod 47. If the scales of the connecting rods 47 at the four corners are equal, it means that the distance between the base 1 and the rotating base 2 is compatible with the thickness of the PCB board. If the scales on the connecting rods 47 at the four corners are not equal, it means that the distance between the base 1 and the rotating base 2 is not compatible with the thickness of the PCB board, and the distance of the gap needs to be adjusted. When the distance between the base 1 and the rotating seat 2 needs to be adjusted to adapt to the thickness of the PCB board, the rotating block drives the threaded rod 52 to rotate. The rotation of the threaded rod 52 can make the L-shaped block 50 and the rotating seat 2 move relative to the base 1, so that the rotating plate 49 is inserted into the rectangular groove 51, thereby adjusting the distance between the base 1 and the rotating seat 2.

[0027] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0028] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PCB welding jig, comprising a base (1) and a rotating base (2), wherein the rotating base (2) is rotatably disposed on the base (1), and is characterized in that: Also includes: A U-shaped frame (3), the U-shaped frame (3) being slidably arranged on the top of the rotating seat (2), the U-shaped frame (3) being provided with a protection component for protecting important components on the PCB board, and the U-shaped frame (3) being further provided with a cleaning component for cleaning the soldering position; Four shells (33), the four shells (33) being respectively arranged at four corners of the top of the rotating seat (2), and a display component for clamping the display base (1) and the rotating seat (2) to hold the PCB board in place is arranged in the shells (33); The protection component comprises an electric push rod (4) fixedly connected to the top of the U-shaped frame (3), the output end of the electric push rod (4) is fixedly connected to a mounting plate (5), the bottom of the mounting plate (5) is fixedly connected to a cooling component (6), the cooling component (6) comprises a hard cooling box (602) and a soft cooling bag body (601) which are connected and fixed to each other, the cooling bag body (601) is located at the bottom, and a coolant is arranged inside the cooling component (6).

2. The PCB welding jig according to claim 1, characterized in that: The rotating seat (2) is provided with a moving assembly for driving the U-shaped frame (3) to move on the rotating seat (2), the moving assembly comprising a first motor (7) fixedly connected to the U-shaped frame (3), the output shaft of the first motor (7) being fixedly connected to a first circular gear (8), the U-shaped frame (3) being provided with two slide grooves (9), the rotating seat (2) being fixedly connected to two limit bars (10), the U-shaped frame (3) being slidably connected to the limit bars (10) via the slide grooves (9), one of the limit bars (10) being fixedly connected to a first rack (11) meshing with the first circular gear (8).

3. The PCB welding jig according to claim 2, characterized in that: The cleaning assembly comprises a cylinder (12) fixedly connected to a mounting plate (5); a second motor (13) is fixedly connected to the top of the cylinder (12); an output shaft of the second motor (13) is fixedly connected to a first rotating shaft (14) rotatably connected to the cylinder (12); a plurality of first blades (15) are fixedly connected to the outer wall of the first rotating shaft (14); two transverse tubes (16) are connected and fixedly connected to the cylinder (12); a plurality of air outlet pipes (17) are connected and fixedly connected to the transverse tubes (16); and the air outlet pipes (17) can be bent and shaped as desired.

4. The PCB welding jig according to claim 3, characterized in that: An auxiliary air outlet component for increasing the air outlet area is provided at one end of the air outlet pipe (17), the auxiliary air outlet component comprising an air outlet cylinder (18) fixedly connected to one end of the air outlet pipe (17), a fixing frame (19) fixedly connected to the inner wall of the air outlet cylinder (18), a rotating tube (20) rotatably connected to the fixing frame (19), an elastic tube (21) in a bent state fixedly connected to one end of the rotating tube (20), a connecting tube (22) fixedly connected to one end of the elastic tube (21), a plurality of second blades (23) fixedly connected to the outer wall of the rotating tube (20), an elliptical ring (24) fixedly connected to one end of the air outlet cylinder (18) via a connecting rod, the elliptical ring (24) being used to limit the rotation range of the connecting tube (22), the connecting tube (22) being in contact with the end point of the long axis of the elliptical ring (24).

5. The PCB welding jig according to claim 4, characterized in that: The cylinder (12) is fixedly connected to a box body (25) via a connecting plate. The box body (25) is fixedly connected to the side wall of the cooling box (602). A second rotating shaft (26) is rotatably connected to the box body (25). One end of the second rotating shaft (26) and the bottom end of the first rotating shaft (14) are fixedly connected to a first bevel gear (27) that meshes with each other. A third rotating shaft (28) is rotatably connected to the box body (25). An outer wall of the third rotating shaft (28) and the other end of the second rotating shaft (26) are fixedly connected to a second bevel gear (29) that meshes with each other. A spiral sheet (30) is fixedly connected to the outer wall of the third rotating shaft (28). A partition (31) is fixedly connected to the inner wall of the cooling box (602). The partition (31) divides the cooling component (6) into two areas. Two through openings (32) are provided on the partition (31).

6. The PCB welding jig according to claim 5, characterized in that: The display assembly comprises a lifting column (35) arranged below the shell (33), the bottom end of the lifting column (35) being arranged on the top of the base (1), the rotating seat (2) being provided with four circular openings (34), the lifting column (35) slidingly occurring in the circular openings (34), the top end of the lifting column (35) being fixedly connected to an L-shaped plate (36), the top end of the L-shaped plate (36) being fixedly connected to a connecting rope (37), the top of the rotating seat (2) being rotatably connected to a fourth rotating shaft (38) and a fifth rotating shaft (40) via a fixed plate, the fourth rotating shaft (38) being fixedly connected to a guide wheel (39), the connecting rope (37) passing around the guide wheel (39), the fifth rotating shaft (40) being fixedly connected to the fourth rotating shaft (38 ... A winding wheel (41) is fixedly connected to the outer wall of the rotating shaft (40), the connecting rope (37) is wound and fixedly connected to the surface of the winding wheel (41), a disc (42) is fixedly connected to the outer wall of the connecting rope (37), a connecting plate (43) is fixedly connected to the top of the rotating seat (2), a spring (44) is fixedly connected between the connecting plate (43) and the disc (42), a second circular gear (45) is fixedly connected to the outer wall of the fifth rotating shaft (40), a second rack (46) is meshed above the second circular gear (45), one end of the second rack (46) is fixedly connected to a connecting rod (47) slidably inserted on the side wall of the housing (33), and a scale is provided on the connecting rod (47).

7. The PCB welding jig according to claim 6, characterized in that: The base (1) is rotatably connected to a sixth rotating shaft (48) via a fixed plate, the outer wall of the sixth rotating shaft (48) is fixedly connected to a rotating plate (49), an L-shaped block (50) is fixedly connected to the rotating seat (2), a rectangular groove (51) is provided in the L-shaped block (50), the rotating plate (49) is slidably inserted in the rectangular groove (51), a threaded rod (52) is threadedly connected to the L-shaped block (50), and the bottom end of the threaded rod (52) is rotatably connected to the rotating plate (49).

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