Vacuum welding device for PCBA (printed circuit board assembly) reflow furnace

Abstract

The utility model belongs to the technical field of PCBA (printed circuit board assembly) board processing equipment, particularly relates to a vacuum welding device for a PCBA reflow oven, and aims to solve the problems that a PCBA board is not uniformly heated and the welding effect is influenced when the PCBA board is processed by a vacuum reflow oven. The furnace door is arranged on one side of the reflow furnace body; the movable seat is fixedly mounted on one side of the furnace door; the moving mechanism is arranged on the reflow furnace body and is used for moving the moving seat; the heating pipe is fixedly mounted on the inner wall of the top of the reflow furnace body; the rotating seat is rotationally mounted at the top of the moving seat; the rotating mechanism is arranged on the moving seat and used for rotating the rotating seat; the placing plate is fixedly mounted at the top of the rotating seat and used for placing a PCBA needing to be welded; and the fixing plate is fixedly mounted at the top of the placing plate. The PCBA board can be fixed conveniently, the PCBA board can be rotated during heating, the PCBA board is heated evenly, and the welding effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of PCBA board processing equipment, and in particular to a PCBA reflow oven vacuum welding device. Background Technology

[0002] A vacuum reflow oven is a device used in the electronic manufacturing process to perform high-quality soldering of electronic components in a vacuum environment. Vacuum reflow ovens are required when processing PCBA boards.

[0003] In the prior art, when processing PCBA boards in a vacuum reflow oven, the PCBA boards are not heated evenly, which affects the welding effect. Therefore, we propose a PCBA reflow oven vacuum welding device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the heat distribution of PCBA boards is not uniform when the vacuum reflow oven processes them, which affects the welding effect. Therefore, a vacuum welding device for PCBA reflow ovens is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A PCBA reflow oven vacuum soldering apparatus, comprising:

[0007] Reflux furnace body;

[0008] The furnace door is located on one side of the reflux furnace body;

[0009] A movable base is fixedly installed on one side of the furnace door;

[0010] The moving mechanism, located on the reflux furnace body, is used to move the moving seat;

[0011] The heating element is fixedly installed on the top inner wall of the reflux furnace body;

[0012] A rotating base is rotatably mounted on top of a movable base;

[0013] A rotating mechanism, mounted on a movable base, is used to rotate the rotating base;

[0014] The placement plate is fixedly installed on the top of the rotating base and is used to place the PCBA that needs to be soldered.

[0015] A fixing plate is fixedly installed on top of the placement plate to restrict one side of the PCBA.

[0016] A clamping mechanism, located on the placement plate, is used to clamp the other side of the PCBA.

[0017] Preferably, the moving mechanism includes a moving block, the top of which is fixedly connected to the bottom of the moving seat, and a moving groove is provided at the bottom of the reflux furnace body, in which the moving block is slidably installed.

[0018] Preferably, a screw is rotatably installed in the moving slot, the screw is threadedly connected to the moving block, and a first motor is fixedly installed on the outside of the reflux furnace body. The output shaft of the first motor extends into the moving slot and is fixedly connected to one end of the screw.

[0019] Preferably, the rotating mechanism includes a crossbar, one end of which is fixedly mounted with a first bevel gear, and the bottom of the rotating seat is fixedly mounted with a second bevel gear. The first bevel gear meshes with the second bevel gear, and the movable seat has an installation cavity, in which both the first bevel gear and the second bevel gear are located.

[0020] Preferably, a rotating hole is provided on one inner wall of the mounting cavity, and a connecting hole is provided on the furnace door. The outer side of the crossbar contacts the inner wall of the rotating hole and the connecting hole. A second motor is fixedly installed on one side of the furnace door, and the output shaft of the second motor is fixedly connected to the other end of the crossbar.

[0021] Preferably, the clamping mechanism includes a side plate, which is disposed on one side of the placement plate. A clamping plate and a reset plate are fixedly installed on one side of the side plate. The clamping plate is slidably installed on the top of the placement plate. A reset groove is opened on one side of the placement plate. The reset plate is slidably installed in the reset groove. One end of a spring is fixedly installed on the inner wall of one side of the reset groove. The other end of the spring is fixedly connected to the reset plate.

[0022] Preferably, two mounting brackets are fixedly installed on the outer side of the reflux furnace body. A vacuum pump and a cold air fan are fixedly installed on the two mounting brackets respectively. The air inlet of the vacuum pump is fixedly connected to an air extraction pipe, and one end of the air extraction pipe is fixedly connected to the reflux furnace body.

[0023] Preferably, the air outlet of the air cooler is fixedly connected to an air supply pipe, one end of which is fixedly connected to the reflux furnace body, and valves are provided on both the exhaust pipe and the air supply pipe.

[0024] Compared with the prior art, the advantages of this utility model are:

[0025] This solution involves pulling the side plate to the left, which moves the clamping plate and reset plate to the left. The reset plate stretches the spring, placing the PCBA board on top of the placement plate so that one end of the PCBA board contacts the left side of the fixing plate. Then, the side plate is released, and the spring moves the reset plate back to its original position, allowing the clamping plate to hold the other side of the PCBA board, thus fixing the PCBA board. The first motor drives the screw to rotate, causing the moving block to move to the right. The moving block moves the moving seat to the right, moving the PCBA board into the reflow oven body, thus closing the oven door.

[0026] Open the valve on the suction pipe, start the vacuum pump, evacuate the inside of the reflow furnace, close the valve on the suction pipe, heat the PCBA board through the heating tube, drive the crossbar to rotate through the second motor, drive the first bevel gear to rotate, drive the second bevel gear to rotate, drive the rotating seat to rotate, drive the placement plate to rotate, and thus rotate the PCBA board, so that the PCBA board is heated evenly.

[0027] This invention facilitates the fixing of PCBA boards and allows the PCBA boards to be rotated during heating, ensuring uniform heating and guaranteeing welding results. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a PCBA reflow oven vacuum welding device proposed in this utility model;

[0029] Figure 2 This is a top view of the reflow oven body, moving block, and screw of a PCBA reflow oven vacuum welding device proposed in this utility model.

[0030] Figure 3 This is a side view of the placement plate and reset plate of the PCBA reflow oven vacuum welding device proposed in this utility model.

[0031] In the diagram: 1. Recirculating furnace body; 2. Furnace door; 3. Moving seat; 4. Rotating seat; 5. Placement plate; 6. Fixing plate; 7. Side plate; 8. Clamping plate; 9. Reset plate; 10. Spring; 11. Heating tube; 12. Second bevel gear; 13. First bevel gear; 14. Crossbar; 15. Second motor; 16. Vacuum pump; 17. Evacuation pipe; 18. Air cooler; 19. Gas supply pipe; 20. First motor; 21. Screw; 22. Moving block. Detailed Implementation

[0032] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this embodiment, and not all embodiments.

[0033] Example 1

[0034] Reference Figures 1-3 A PCBA reflow oven vacuum soldering apparatus, comprising:

[0035] Reflux furnace body 1;

[0036] Furnace door 2 is located on one side of the reflux furnace body 1;

[0037] The movable seat 3 is fixedly installed on one side of the furnace door 2;

[0038] A moving mechanism, located on the reflux furnace body 1, is used to move the moving seat 3;

[0039] Heating tube 11 is fixedly installed on the top inner wall of the reflux furnace body 1;

[0040] Rotary seat 4 is rotatably mounted on top of movable seat 3;

[0041] A rotating mechanism, mounted on the movable seat 3, is used to rotate the rotating seat 4;

[0042] Placement plate 5 is fixedly installed on the top of rotating base 4 and is used to place PCBAs that need to be soldered;

[0043] The fixing plate 6 is fixedly installed on the top of the placement plate 5 and is used to restrict one side of the PCBA.

[0044] A clamping mechanism, located on the placement plate 5, is used to clamp the other side of the PCBA.

[0045] In this embodiment, the moving mechanism includes a moving block 22. The top of the moving block 22 is fixedly connected to the bottom of the moving seat 3. A moving groove is provided at the bottom of the reflux furnace body 1, and the moving block 22 is slidably installed in the moving groove.

[0046] In this embodiment, a screw 21 is rotatably installed in the moving slot, and the screw 21 is threadedly connected to the moving block 22. A first motor 20 is fixedly installed on the outside of the reflux furnace body 1, and the output shaft of the first motor 20 extends into the moving slot and is fixedly connected to one end of the screw 21.

[0047] In this embodiment, the rotating mechanism includes a crossbar 14, one end of which is fixedly mounted with a first bevel gear 13, and the bottom of the rotating seat 4 is fixedly mounted with a second bevel gear 12. The first bevel gear 13 meshes with the second bevel gear 12. The movable seat 3 has an installation cavity, and both the first bevel gear 13 and the second bevel gear 12 are located in the installation cavity.

[0048] In this embodiment, a rotating hole is provided on one side of the inner wall of the mounting cavity, and a connecting hole is provided on the furnace door 2. The outer side of the crossbar 14 contacts the inner wall of the rotating hole and the connecting hole. A second motor 15 is fixedly installed on one side of the furnace door 2, and the output shaft of the second motor 15 is fixedly connected to the other end of the crossbar 14.

[0049] In this embodiment, the clamping mechanism includes a side plate 7, which is disposed on one side of the placement plate 5. A clamping plate 8 and a reset plate 9 are fixedly installed on one side of the side plate 7. The clamping plate 8 is slidably installed on the top of the placement plate 5. A reset groove is opened on one side of the placement plate 5. The reset plate 9 is slidably installed in the reset groove. One end of a spring 10 is fixedly installed on the inner wall of one side of the reset groove. The other end of the spring 10 is fixedly connected to the reset plate 9.

[0050] In this embodiment, two mounting brackets are fixedly installed on the outside of the reflow oven body 1. A vacuum pump 16 and a cold air blower 18 are fixedly installed on the two mounting brackets respectively. The air inlet of the vacuum pump 16 is fixedly connected to an exhaust pipe 17, and one end of the exhaust pipe 17 is fixedly connected to the reflow oven body 1.

[0051] In this embodiment, the air outlet of the air cooler 18 is fixedly connected to the air supply pipe 19, one end of the air supply pipe 19 is fixedly connected to the reflux furnace body 1, and valves are provided on both the exhaust pipe 17 and the air supply pipe 19.

[0052] In this embodiment, during use, pulling the side plate 7 to the left causes the clamping plate 8 and the reset plate 9 to move to the left. The reset plate 9 stretches the spring 10, placing the PCBA board on top of the placement plate 5, so that one end of the PCBA board contacts the left side of the fixing plate 6. Then, releasing the side plate 7 causes the spring 10 to reset the reset plate 9, allowing the clamping plate 8 to clamp the other side of the PCBA board, thereby fixing the PCBA board. The first motor 20 drives the screw 21 to rotate, causing the moving block 22 to move to the right. The moving block 22 drives the moving seat 3 to move to the right, placing the PCBA board... The board is moved into the reflow oven 1, causing the oven door 2 to close. Then, the valve on the exhaust pipe 17 is opened, and the vacuum pump 16 is started to evacuate the interior of the reflow oven 1. The valve on the exhaust pipe 17 is closed, and the PCBA board is heated through the heating tube 11. The second motor 15 drives the crossbar 14 to rotate, which in turn drives the first bevel gear 13 to rotate. The first bevel gear 13 drives the second bevel gear 12 to rotate, which in turn drives the rotating seat 4 to rotate. The rotating seat 4 drives the placement plate 5 to rotate, thereby rotating the PCBA board and ensuring that the PCBA board is heated evenly.

[0053] Example 2

[0054] The difference between this embodiment and the first embodiment is that the furnace door 2 is provided with an observation window, which makes it convenient to observe the inside of the reflux furnace body 1.

[0055] The rest is the same as in Example 1.

[0056] The above description is only a preferred embodiment of this practice, but the scope of protection of this embodiment is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in this embodiment, based on the technical solution and the inventive concept of this embodiment, should be covered within the scope of protection of this embodiment.

Claims

1. A PCBA reflow oven vacuum soldering apparatus, characterized in that, include: Reflux furnace body (1); Furnace door (2) is located on one side of the reflux furnace body (1); The movable seat (3) is fixedly installed on one side of the furnace door (2); The moving mechanism is located on the reflux furnace body (1) and is used to move the moving seat (3); Heating tube (11) is fixedly installed on the top inner wall of the reflux furnace body (1); Rotary seat (4) is rotatably mounted on the top of movable seat (3); A rotating mechanism is provided on the movable seat (3) and is used to rotate the rotating seat (4); The placement plate (5) is fixedly installed on the top of the rotating base (4) and is used to place the PCBA that needs to be soldered. A fixing plate (6) is fixedly installed on the top of the placement plate (5) to restrict one side of the PCBA; A clamping mechanism is provided on the placement plate (5) for clamping the other side of the PCBA.

2. The PCBA reflow oven vacuum soldering apparatus according to claim 1, characterized in that, The moving mechanism includes a moving block (22), the top of which is fixedly connected to the bottom of the moving seat (3). A moving groove is provided at the bottom of the reflux furnace body (1), and the moving block (22) is slidably installed in the moving groove.

3. The PCBA reflow oven vacuum soldering apparatus according to claim 2, characterized in that, A screw (21) is rotatably installed in the moving slot. The screw (21) is threadedly connected to the moving block (22). A first motor (20) is fixedly installed on the outside of the reflux furnace body (1). The output shaft of the first motor (20) extends into the moving slot and is fixedly connected to one end of the screw (21).

4. The PCBA reflow oven vacuum soldering apparatus according to claim 3, characterized in that, The rotating mechanism includes a crossbar (14), one end of which is fixedly mounted with a first bevel gear (13), and the bottom of the rotating seat (4) is fixedly mounted with a second bevel gear (12). The first bevel gear (13) meshes with the second bevel gear (12). The moving seat (3) has an installation cavity, and both the first bevel gear (13) and the second bevel gear (12) are located in the installation cavity.

5. A PCBA reflow oven vacuum soldering apparatus according to claim 4, characterized in that, A rotating hole is provided on one side of the inner wall of the mounting cavity, and a connecting hole is provided on the furnace door (2). The outer side of the crossbar (14) contacts the inner wall of the rotating hole and the connecting hole. A second motor (15) is fixedly installed on one side of the furnace door (2), and the output shaft of the second motor (15) is fixedly connected to the other end of the crossbar (14).

6. A PCBA reflow oven vacuum soldering apparatus according to claim 5, characterized in that, The clamping mechanism includes a side plate (7), which is located on one side of the placement plate (5). A clamping plate (8) and a reset plate (9) are fixedly installed on one side of the side plate (7). The clamping plate (8) is slidably installed on the top of the placement plate (5). A reset groove is provided on one side of the placement plate (5). The reset plate (9) is slidably installed in the reset groove. One end of a spring (10) is fixedly installed on the inner wall of one side of the reset groove. The other end of the spring (10) is fixedly connected to the reset plate (9).

7. A PCBA reflow oven vacuum soldering apparatus according to claim 6, characterized in that, Two mounting brackets are fixedly installed on the outside of the reflux furnace body (1). A vacuum pump (16) and a cold air blower (18) are fixedly installed on the two mounting brackets respectively. The air inlet of the vacuum pump (16) is fixedly connected to an air extraction pipe (17), and one end of the air extraction pipe (17) is fixedly connected to the reflux furnace body (1).

8. A PCBA reflow oven vacuum soldering apparatus according to claim 7, characterized in that, The air outlet of the air cooler (18) is fixedly connected to an air supply pipe (19), one end of which is fixedly connected to the reflux furnace body (1). Valves are provided on both the exhaust pipe (17) and the air supply pipe (19).

Images