PCB manufacturing blow-drying and cooling device
By designing a multi-stage air-drying cooling device, the problem of incomplete blow-drying in PCB manufacturing is solved, efficient moisture removal and cooling is achieved, and production defects and costs are reduced.
Patent Information
- Application Number
- CN202421660358.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-07-12
AI Technical Summary
During the PCB manufacturing process, incomplete blow-drying leads to deep oxidation and mucosal problems, resulting in layered scrapping and poor copper residue, increasing production costs and labor waste.
A PCB-made blow-drying cooling device is designed, including a cold air chamber, a hot air chamber and a cooling chamber, which blows cold air, hot air and cold air respectively, and is equipped with a fan for multi-stage air drying and cooling to ensure that the moisture is completely removed.
It effectively reduces the stratified scrap rate and copper residual defect rate, and significantly reduces production costs.
Smart Images
Figure CN223231396U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of PCB manufacturing, in particular to a PCB manufacturing drying and cooling device. Background Art
[0002] A printed circuit board (PCB) is an electronic component primarily used to carry, connect, and protect various electronic components in electronic devices. A high-density, highly integrated carrier, PCBs offer a variety of circuit connection methods, such as unidirectional and bidirectional conduction, and multi-channel bus connections. PCBs organically integrate various electronic components onto a unified platform, significantly reducing product size and weight while improving reliability.
[0003] PCB manufacturing refers to the process of producing electronic circuit boards with specific functions and performance using printed circuit technology (PCB manufacturing). This process involves multiple steps, including design, manufacturing, and quality inspection, ultimately resulting in a product that meets specifications. Currently, PCB production requires cleaning after copper and tin plating to remove any residual chemical residue on the board surface. After cleaning, the board must be dried and cooled.
[0004] However, during the above production process, deep oxidation and sticky film problems often occur due to failure to blow dry, resulting in delamination and scrap and poor residual copper, which brings cost and labor waste to the company's production. Utility Model Content
[0005] The utility model provides a PCB manufacturing drying and cooling device, aiming to solve the existing problems.
[0006] The utility model is implemented as follows: a PCB manufacturing drying and cooling device, the PCB manufacturing drying and cooling device comprises: a shell, the shell is divided into four sections, the first three sections are respectively provided with slots, the three slots are respectively provided with a cold air chamber, a hot air chamber and a cooling chamber, a plurality of motors are provided in the three slots, the output end of each motor is connected to a group of wind knives, an inlet is provided on the side of the cold air chamber away from the hot air chamber, an outlet is provided on the side of the cooling chamber away from the hot air chamber, cold air is blown in the cold air chamber, hot air is blown in the hot air chamber, and cold air is blown in the cooling chamber, the fourth section is provided with a fan, and the fan is fixedly connected to the outer wall of the shell.
[0007] Preferably, each of the slots includes at least two motors.
[0008] Preferably, a plurality of guide bars are provided between the plurality of wind knives, and both ends of the guide bars are detachably connected between two adjacent wind knives.
[0009] Preferably, the guide strip is parallel to the wind knife edge.
[0010] Compared with the prior art, the beneficial effects of the present invention are:
[0011] The PCB manufacturing drying and cooling device enters the cold air chamber through the PCB board from the inlet, and blows cold air in the cold air chamber to blow part of the moisture on the circuit board away from the board body, and blows hot air in the hot air chamber to dry the remaining moisture on the circuit board with hot air, and blows cold air in the cooling chamber to dry the remaining moisture on the board while cooling the circuit board. The PCB board passes through the outlet and reaches the fan outlet, and the fan further cools the dried PCB board, which effectively improves defects and reduces the company's costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0013] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model;
[0014] Figure 2 It is a structural diagram of embodiment 2 of the present utility model.
[0015] The numbers in the accompanying drawings are: 1, shell; 2, cold air chamber; 3, hot air chamber; 4, cooling chamber; 5, fan; 6, motor; 7, wind knife; 8, guide bar. DETAILED DESCRIPTION
[0016] In order to more fully understand the technical content of the present invention, the technical solution of the present invention is further introduced and illustrated in conjunction with specific embodiments below, but is not limited thereto. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.
[0017] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the utility model is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.
[0018] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0019] Example 1
[0020] refer to Figure 1 The PCB manufacturing drying and cooling device includes: a shell 1, a fan 5, multiple motors 6 and multiple air knives 7. The shell 1 is divided into four sections. The first three sections are respectively provided with slots. The three slots are respectively a cold air chamber 2, a hot air chamber 3 and a cooling chamber 4. Multiple motors 6 are provided in the three slots. Each slot includes at least two motors 6. The output end of each motor 6 is connected to a group of air knives 7. The motor 6 controls the switch of the air knife 7. The cold air chamber 2 is provided with an inlet on the side away from the hot air chamber 3, and the cooling chamber 4 is provided with an outlet on the side away from the hot air chamber 3. The PCB board enters the cold air chamber 2 from the inlet, and cold air is blown in the cold air chamber 2 to blow part of the moisture on the circuit board away from the board body. Hot air is blown in the hot air chamber 3 to dry the remaining moisture on the circuit board with hot air. Cold air is blown in the cooling chamber 4 to dry the remaining moisture on the board while cooling the circuit board. The fourth section is provided with a fan 5. The fan 5 is fixedly connected to the outer wall of the shell 1. The PCB board reaches the air outlet of the fan 5 through the outlet, and the fan 5 further cools the dried PCB board. After using this device, the scrap rate of delamination was reduced from 3% to 0.2%, and the defective residual copper rate was reduced from 5% to 0.5%, which effectively improved the defects and reduced the company's costs.
[0021] Example 2
[0022] refer to Figure 2The difference from Example 1 is that, in order to prevent the PCB board from being shaken back and forth by the wind during the drying and cooling process, multiple guide bars 8 are provided between the multiple air knives 7. The two ends of the guide bar 8 are detachably connected between two adjacent air knives 7. The guide bar 8 is parallel to the opening of the air knife 7. The PCB board passes through the cold air chamber 2, the hot air chamber 3 and the cooling chamber 4 in sequence along the guide bar 8, thereby increasing the stability of the PCB board during the drying and cooling process. The guide bar 8 is easy to disassemble and maintain.
[0023] It should be noted that the electrical components appearing in this application document are all electrically connected to the external main controller and 220V AC power, and the main controller can be a conventional known device that controls the servo motor, contact sensor, processor, alarm module and drive module. The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part are connected by conventional means such as mature bolts, rivets, welding, etc. in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, so no specific description will be given here.
[0024] The embodiments described above are only part of the embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any ordinary technician in the field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A PCB manufacturing drying and cooling device, characterized in that: The PCB manufacturing drying and cooling device comprises: a shell (1), the shell (1) is divided into four sections, the first three sections are respectively provided with slots, the three slots are respectively a cold air chamber (2), a hot air chamber (3) and a cooling chamber (4), a plurality of motors (6) are provided in the three slots, the output end of each motor (6) is connected to a group of wind knives (7), an inlet is provided on a side of the cold air chamber (2) away from the hot air chamber (3), and an outlet is provided on a side of the cooling chamber (4) away from the hot air chamber (3), cold air is blown in the cold air chamber (2), hot air is blown in the hot air chamber (3), and cold air is blown in the cooling chamber (4), and the fourth section is provided with a fan (5), which is fixedly connected to the outer wall of the shell (1).
2. The PCB manufacturing drying and cooling device according to claim 1, characterized in that: Each of the slots comprises at least two motors (6).
3. The PCB manufacturing drying and cooling device according to claim 1, characterized in that: A plurality of guide bars (8) are provided between the plurality of wind knives (7), and both ends of the guide bars (8) are detachably connected between two adjacent wind knives (7).
4. The PCB manufacturing drying and cooling device according to claim 1, characterized in that: The guide strip (8) is parallel to the opening of the wind knife (7).