PCB baking device

Abstract

The utility model discloses a PCB (Printed Circuit Board) baking device, which comprises a machine body and a base, and a fixed rod is welded at the middle position in the machine body. According to the PCB baking device, the placing plates, the placing grooves and the rotating disc are adopted, the PCB can be placed in the placing grooves in the middle of the placing plates before being baked, and subsequent baking operation is facilitated; therefore, during post-baking, the air outlet pipes driven by the rotating disc to rotate act on the upper surface and the lower surface of the PCB at the same time, double-face baking is achieved, the baking range is expanded, the situation that the upper layer is heated but the lower layer is not heated is avoided, and the overall heating uniformity is improved; the PCB baking device has the advantages that rising moisture acting on the bottom face of the PCB above can be reduced, secondary interference is prevented, the overall baking effect is improved, the PCB baking device can be better used conveniently, and the PCB baking device has the advantages of double-face baking, uniform baking and sufficient heating.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB circuit board processing, in particular to a PCB circuit board baking device. Background Art

[0002] During PCB processing, one of the steps is to bake the PCB. Baking can remove moisture from the PCB and electronic components. When the PCB reaches a certain temperature, the flux can better bond with the components and pads, and the welding effect will be greatly improved.

[0003] The application number in the existing public technology is: CN202221490539.6 A baking device for PCB circuit board processing, which can be installed and disassembled through the placement plate, which is convenient for installing and fixing the circuit board and is more convenient to operate; since the hot air can be directly guided to the top of the placement plate, the temperature difference between the placement plates at different heights can be reduced; the driving component can drive the annular plate to revolve, and the engagement of the gear and the gear ring is used to realize the rotation of the gear, that is, the revolution and rotation of the placement plate are realized, so that the circuit board on the surface of the placement plate is heated more evenly, and the baking effect of the circuit board is good.

[0004] However, the above patent still has certain disadvantages when used: when performing the baking operation, the PCB board will be placed on the surface of the placement plate. At this time, the bottom surface of the PCB board will be in contact with the surface of the placement plate, thereby causing the upper surface to be baked quickly, but the baking effect of the lower surface in contact with the placement plate is poor, which easily causes uneven baking on both sides, thereby reducing the baking effect and baking quality of the PCB board, and the overall use effect is not very ideal.

[0005] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0006] (1) Technical problems solved

[0007] In view of the shortcomings of the existing technology, the present invention provides a PCB circuit board baking device, which has the advantages of double-sided baking, uniform baking, and sufficient heating, thereby solving the problems in the above-mentioned background technology.

[0008] (2) Technical solution

[0009] In order to achieve the above advantages of double-sided baking, uniform baking, and sufficient heating, the specific technical solutions adopted by the present invention are as follows:

[0010] A PCB circuit board baking device comprises a body and a base, a fixing rod is welded to the middle position inside the body, a plurality of groups of placement plates are installed around the surface of the fixing rod, and two groups of placement plates are provided, fixing strips are symmetrically welded between the two placement plates, a placement groove is provided between the fixing strips and located in the middle position of the placement plates, a drive shaft is rotatably connected to the top middle position of the body above the fixing rod, the bottom end of the drive shaft passes through one side of the body and is fixedly connected to a rotating disk, and the rotating disk is located above the fixing rod, a plurality of groups of air pipes are installed around the bottom surface of the rotating disk, a plurality of groups of air outlet pipes are evenly installed on the side of the air outlet pipe, and a plurality of groups of air outlet holes are provided on the surface of the air outlet pipe.

[0011] Furthermore, a motor is installed at one side of the top of the body, and transmission wheels are installed at the output end of the motor and the surface of the drive shaft. A transmission chain is connected between the transmission wheels, and an air duct is rotatably connected to the top of the drive shaft, and the other end of the air duct is connected to a hot air blower.

[0012] Furthermore, exhaust pipes are symmetrically installed on both sides of the top of the body.

[0013] Furthermore, a base is fixedly installed at the bottom of the body.

[0014] Furthermore, the air outlet pipes are grouped in pairs and are located at the upper and lower ends of the placement plate.

[0015] Furthermore, channels for hot air flow are provided inside the driving shaft and inside the rotating disk.

[0016] Furthermore, the placement plate is an L-shaped structure.

[0017] Furthermore, a cabinet door is provided on one side of the machine body.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the present invention provides a PCB circuit board baking device with the following beneficial effects:

[0020] The utility model adopts a placement plate, a placement slot and a rotating disk. Before baking the PCB board, it can be placed in the placement slot in the middle of the multiple placement plates, which is convenient for subsequent baking operations. Since the placement slot is open, the air outlet pipe driven by the rotating disk to rotate acts on the upper and lower surfaces of the PCB board at the same time during post-baking, thereby realizing double-sided baking, expanding the baking range, avoiding the situation where the upper layer is heated while the lower layer is not heated, and improving the overall heating uniformity. In addition, the placement plates of the upper and lower layers are staggered, which can reduce the effect of rising moisture on the bottom surface of the upper PCB board, prevent secondary interference, improve the overall baking effect, facilitate better use, and have the advantages of double-sided baking, uniform baking, and sufficient heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of a PCB circuit board baking device proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the connection between the placement plate and the fixing strip of the utility model;

[0024] Figure 3 This is a top view of the connection between the fixing rod and the placement plate of the utility model;

[0025] Figure 4 It is a cross-sectional view of the connection between the air guide tube and the top end of the drive shaft of the utility model.

[0026] In the picture:

[0027] 1. Machine body; 2. Air supply pipe; 3. Exhaust pipe; 4. Exhaust hole; 5. Placement plate; 6. Fixing bar; 7. Exhaust pipe; 8. Hot air blower; 9. Air guide pipe; 10. Drive shaft; 11. Transmission chain; 12. Transmission wheel; 13. Motor; 14. Rotating disk; 15. Fixing rod; 16. Placement slot; 17. Base. DETAILED DESCRIPTION

[0028] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0029] According to an embodiment of the present utility model, a PCB circuit board baking device is provided.

[0030] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-4 As shown, a PCB circuit board baking device according to an embodiment of the present invention includes a body 1 and a base 17, a fixing rod 15 is welded at the middle position inside the body 1, and several groups of placement plates 5 are installed around the surface of the fixing rod 15, and there are two groups of placement plates 5, and fixing bars 6 are welded symmetrically between the two placement plates 5. A placement groove 16 is provided between the fixing bars 6 and located in the middle position of the placement plates 5. A driving shaft 10 is rotatably connected to the top middle position of the body 1 above the fixing rod 15, and the bottom end of the driving shaft 10 passes through one side of the body 1 and is fixedly connected to the rotating disk 14, and the rotating disk 14 is located above the fixing rod 15, and several groups of air pipes 2 are installed around the bottom surface of the rotating disk 14, and several groups of air outlet pipes 3 are evenly installed on the side of the air supply pipe 2, and several groups of air outlet holes 4 are provided on the surface of the air outlet pipe 3. There are multiple groups of placement plates 5, and the upper and lower placement plates 5 are staggered with each other to reduce the moisture of the lower layer from acting on the circuit board on the upper layer, avoid secondary interference during baking, and ensure the overall baking quality.

[0031] In one embodiment, a motor 13 is installed at one side of the top of the body 1, and transmission wheels 12 are installed at the output end of the motor 13 and the surface of the drive shaft 10. A transmission chain 11 is connected between the transmission wheels 12. An air duct 9 is rotatably connected to the top of the drive shaft 10, and a hot air blower 8 is connected to the other end of the air duct 9. The hot air blower 8 is configured to generate hot air to achieve the baking operation of the circuit board by hot air. Since the hot air blower 8 is a common knot device, it will not be described in detail.

[0032] In one embodiment, exhaust pipes 7 are symmetrically installed on both sides of the top of the body 1. The exhaust pipes 7 are provided to discharge moisture generated by baking in a timely manner.

[0033] In one embodiment, a base 17 is fixedly installed at the bottom of the body 1, and the entire device can be fixed by the base 17 to enhance the overall stability in use.

[0034] In one embodiment, the air outlet pipes 3 are grouped in pairs and are located at the upper and lower ends of the placement plate 5. The upper and lower settings of the air outlet pipes 3 are to ensure that they can act on the upper and lower surfaces of the circuit board at the same time during subsequent baking, thereby expanding the overall baking area, avoiding uneven heating caused by the upper layer being heated while the lower layer is not heated, and ensuring the overall baking quality.

[0035] In one embodiment, channels for hot air flow are opened inside the drive shaft 10 and inside the rotating disk 14. The channels are opened to transport the hot air to the outlet pipe 3 and discharge it from the outlet holes 4 on its surface, thereby achieving the baking operation of the circuit board through the hot air.

[0036] In one embodiment, the placement plate 5 is an L-shaped structure. The L-shaped structure is set to support the two side surfaces of the PCB board, thereby realizing the support and fixing operation thereof. At this time, the bottom position of the circuit board can be exposed through the placement groove 16, which facilitates the heating and baking of the bottom and improves the overall baking quality and efficiency.

[0037] In one embodiment, a cabinet door is provided on one side of the body 1. The cabinet door is provided to facilitate the placement or removal of the PCB board for use. The cabinet door is the basic structure of the body 1 and will not be described in detail.

[0038] Working principle: In actual use, personnel can place the PCB boards that need to be baked in the placement slot 16 between the two placement plates 5 in sequence. Since the middle position of the placement slot 16 is open, it can effectively ensure that the bottom surface of the PCB board can also contact the hot air generated by the hot air blower 8, thereby expanding the overall baking area and improving the overall baking quality, so that the upper and lower surfaces of the PCB board can be processed. Moreover, when the PCB board is being baked, the operation of the motor 13 can drive the transmission wheel 12 and the transmission chain 11 to operate, thereby driving the rotating disk 14 to rotate. At this time, the surface of the rotating disk 14 will drive the multiple air outlet pipes 3 at its bottom to rotate. Since the air outlet pipes 3 are grouped in pairs and act on the upper and lower surfaces of the PCB board respectively, the overall baking area can be expanded, so that the surface of the PCB board can be fully baked, which can improve the overall baking uniformity and facilitate better processing. In addition, the multiple placement plates 5 are installed in a staggered manner between the upper and lower layers, which can reduce the moisture generated in the lower layer from re-attaching to the bottom surface of the upper PCB board when rising, thereby improving the overall baking effect. The device as a whole has the advantages of double-sided baking, uniform baking, and sufficient heating.

[0039] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A PCB circuit board baking device, comprising a body (1) and a base (17), characterized in that: A fixing rod (15) is welded at the middle position inside the body (1), and a plurality of groups of placement plates (5) are installed around the surface of the fixing rod (15), and two groups of placement plates (5) are provided. A fixing strip (6) is symmetrically welded between the two placement plates (5), and a placement groove (16) is provided between the fixing strips (6) and located in the middle position of the placement plates (5). A driving shaft (10) is rotatably connected to the top middle position inside the body (1) above the fixing rod (15), and the bottom end of the driving shaft (10) passes through one side of the body (1) and is fixedly connected to the rotating disk (14), and the rotating disk (14) is located above the fixing rod (15). A plurality of groups of air supply pipes (2) are installed around the bottom surface of the rotating disk (14), and a plurality of groups of air outlet pipes (3) are evenly installed on the side of the air supply pipe (2), and a plurality of groups of air outlet holes (4) are provided on the surface of the air outlet pipe (3).

2. A PCB circuit board baking device according to claim 1, characterized in that: A motor (13) is installed at one side of the top of the machine body (1), and transmission wheels (12) are installed at the output end of the motor (13) and the surface of the drive shaft (10). A transmission chain (11) is connected between the transmission wheels (12). An air guide pipe (9) is rotatably connected to the top of the drive shaft (10), and the other end of the air guide pipe (9) is connected to a hot air blower (8).

3. A PCB circuit board baking device according to claim 1, characterized in that: Exhaust pipes (7) are symmetrically installed on both sides of the top of the machine body (1).

4. A PCB circuit board baking device according to claim 1, characterized in that: A base (17) is fixedly mounted at the bottom of the machine body (1).

5. The PCB baking device according to claim 1, characterized in that: The air outlet pipes (3) are arranged in pairs in a group and are located at the upper and lower ends of the placement plate (5).

6. A PCB circuit board baking device according to claim 1, characterized in that: Channels for hot air flow are provided at the inner position of the drive shaft (10) and the inner position of the rotating disk (14).

7. The PCB baking device according to claim 1, characterized in that: The placement plate (5) is an L-shaped structure.

8. The PCB baking device according to claim 1, characterized in that: A cabinet door is provided on one side of the machine body (1).

Images