An FPC cleaning device

Abstract

The utility model discloses a kind of FPC cleaning devices, belong to FPC cleaning equipment technical field, including machine body, cleaning assembly is arranged on the machine body, the cleaning assembly includes shell, placing seat, fixed block, blowing mechanism and suction mechanism and is composed, the placing seat is fixed in shell, placing groove for vertically accommodating FPC body is opened in the placing seat, the fixed block is symmetrically set in the both ends of placing seat along its length direction, U type clamping groove is opened in the side of the placing seat towards the fixed block, and the both ends of the placing seat are clamped and fixed by the U type clamping groove, upper air hole and lower air hole are opened in the side wall of the fixed block, the upper air hole is located above lower air hole, the air outlet of blowing mechanism is communicated with the upper air hole, the air inlet of suction mechanism is communicated with the lower air hole, control unit is arranged on the machine body, the control unit is electrically connected with the blowing mechanism and the suction mechanism respectively, the utility model has the advantage of improving the cleaning efficiency of FPC.

Description

Technical Field

[0001] This utility model relates to the field of FPC cleaning equipment technology, specifically to an FPC cleaning device. Background Technology

[0002] Flexible printed circuit boards (FPCs) are a technology developed in the United States in the 1970s for the development of aerospace rocket technology. They are printed circuits made with polyester film or polyimide as the substrate, offering high reliability and excellent flexibility. By embedding circuit designs into a flexible, thin, bendable plastic sheet, a large number of precision components can be packed into narrow and limited spaces, thus forming a flexible circuit. This type of circuit can be bent and folded at will, is lightweight, small in size, has good heat dissipation, and is easy to install, breaking through the limitations of traditional interconnection technologies.

[0003] In the semiconductor industry, the main methods for cleaning FPCs are handheld vacuum cleaners and air guns to blow away the dust, which is troublesome and inconvenient, resulting in low cleaning efficiency.

[0004] Based on this, the present invention designs an FPC cleaning device to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a body, on which a cleaning component is provided. The cleaning component comprises a shell, a placement seat, a fixing block, a blowing mechanism, and a suction mechanism. The placement seat is fixed inside the shell and has a placement groove for vertically accommodating the FPC body. The fixing block is symmetrically arranged at both ends of the placement seat along its length. A U-shaped slot is provided on the side of the fixing block facing the placement seat, and the fixing block is clamped and fixed to both ends of the placement seat through the U-shaped slot. An upper vent and a lower vent are provided on the side wall of the fixing block. The upper vent is located above the lower vent. The air outlet of the blowing mechanism communicates with the upper vent, and the air inlet of the suction mechanism communicates with the lower vent. A control unit is provided on the body, and the control unit is electrically connected to the blowing mechanism and the suction mechanism respectively.

[0006] By adopting the above technical solution, the U-shaped slot on the fixing block is used to clamp and fix the placement seat, ensuring that the relative positions of the air blowing hole and air suction hole with the surface of the FPC body are always accurate. Then, the air blowing mechanism blows away the surface contaminants, and the air suction mechanism sucks them away, avoiding secondary adhesion of contaminants. This realizes the integrated operation of positioning, fixing and cleaning the FPC body, freeing the operator's hands, simplifying the workflow and improving cleaning efficiency.

[0007] Preferably, the depth of the placement groove is greater than the width of the FPC body.

[0008] By adopting the above technical solution, the depth of the placement tank is limited to be greater than the width of the FPC body, providing sufficient depth for positioning and preventing it from tipping over or shifting during the cleaning process. At the same time, when the air blowing mechanism blows air, the contaminants can be retained in the placement tank as much as possible, so that the suction mechanism can absorb the contaminants and reduce secondary pollution caused by the flow of contaminants.

[0009] Preferably, a laser sensor is provided on one side of the machine body, a notch is provided in the center of the placement slot, the emitting end of the laser sensor is positioned directly opposite the notch, and the laser sensor is electrically connected to the control unit.

[0010] By adopting the above technical solution, and through the cooperation of laser sensors and notches, it is possible to accurately detect whether the FPC body has been correctly placed in place, and automatically transmit the signal to the control unit to start the cleaning process, thus realizing fully automated operation and further improving production efficiency.

[0011] Preferably, elastic clamping pieces are provided on both sides of the placement groove.

[0012] By adopting the above technical solution, the elastic clamping piece can provide cushioning while clamping the FPC body, avoiding scratches on the surface of the FPC body that may be caused by rigid clamping, and improving the placement stability of the FPC body.

[0013] Preferably, the outer casing is made of an antistatic material.

[0014] By adopting the above technical solution, the shell made of antistatic material can effectively prevent the static electricity generated by friction during the cleaning process from attracting tiny dust particles, or from electrostatic discharge from breaking down the precision FPC body circuit, which greatly improves the safety of the cleaning process and the yield of finished products.

[0015] In summary, this application has the following beneficial technical effects: First, the U-shaped slot on the fixing block clamps and fixes the placement seat, ensuring that the relative positions of the air blowing hole and the air suction hole with the surface of the FPC body are always accurate. Then, the air blowing mechanism blows away surface contaminants, and the air suction mechanism sucks them away, avoiding secondary adhesion of contaminants. This realizes the integrated operation of positioning, fixing and cleaning of the FPC body, simplifies the workflow and improves cleaning efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this embodiment; Figure 3 This is a schematic diagram of the cross-sectional structure of the cleaning component in this embodiment; Figure 4 This is a schematic diagram of the cross-sectional structure of the placement base in this embodiment.

[0018] The attached diagram lists the components represented by each number as follows: 1. Body; 2. Outer shell; 3. Control unit; 4. Laser sensor; 5. Receiver; 6. Air blowing mechanism; 7. Air suction mechanism; 8. Fixing block; 9. Placement seat; 10. Placement slot; 11. FPC body; 12. Notch; 13. Upper vent; 14. Lower vent; 15. Clamping piece; 16. Slot. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0021] An FPC cleaning device includes a body 1, on which a cleaning component is provided. The cleaning component comprises a housing 2, a placement seat 9, a fixing block 8, a blowing mechanism 6, and a suction mechanism 7. The placement seat 9 is fixed inside the housing 2 and has a placement groove 10 for vertically accommodating the FPC body 11. The fixing block 8 is symmetrically arranged at both ends of the placement seat 9 along its length. The side of the fixing block 8 facing the placement seat 9 has a U-shaped slot 16, which clamps and fixes it to both ends of the placement seat 9. The side wall of the fixing block 8 has an upper vent 13 and a lower vent 14. The upper vent 13 is located above the lower vent 14. The air outlet of the blowing mechanism 6 communicates with the upper vent 13, and the air inlet of the suction mechanism 7 communicates with the lower vent 14. A control unit 3 is provided on the body 1 and is electrically connected to the blowing mechanism 6 and the suction mechanism 7, respectively.

[0022] In use, after the FPC body 11 is vertically inserted into the placement slot 10, the operator can start the device automatically via a button. After receiving the start signal, the control unit 3 first drives the blowing mechanism 6 to work. A strong airflow blows out from the upper vent 13, blowing away and raising dust, particles and other contaminants attached to the surface of the FPC body 11. Then, the control unit 3 closes the blowing mechanism 6 and immediately starts the suction mechanism 7. The airflow direction is reversed, and a strong suction is generated from the lower vent 14, which quickly sucks away the contaminants that are still suspended in the air and have been raised. The contaminants are then collected or discharged through the pipe. This "blow first, then suck" timing control constitutes an efficient cleaning cycle, effectively avoiding the problem of secondary contaminant adhesion that may be caused by traditional single blowing, and significantly improving the cleanliness rate.

[0023] The depth of the placement groove 10 is greater than the width of the FPC body 11. When the FPC body 11 is fully inserted into the bottom of the placement groove 10 with its side, a considerable portion of the upper part of the FPC body 11 is still contained within the groove. The placement groove 10 has sufficient depth to enclose and limit it. When the air blowing mechanism 6 blows air out from the upper vent 13 and acts on the surface of the FPC body 11, most of the dispersed contaminants will move toward the groove wall opposite to the FPC body 11 under the influence of inertia and airflow and be confined within this deep groove space. This greatly limits the diffusion path of contaminants and prevents them from splashing outside the device or settling back into other areas of the FPC body 11.

[0024] Therefore, a laser sensor 4 is installed on one side of the machine body 1, and a notch 12 is provided in the center of the placement slot 10. The emitting end of the laser sensor 4 is positioned directly opposite the notch 12. The laser sensor 4 is electrically connected to the control unit 3. When the operator inserts the FPC body 11 vertically into the bottom of the placement slot 10, the side of the FPC body 11 will completely block the laser beam path passing through the notch 12. The receiving end of the laser sensor 4 cannot receive the light signal, and its output state immediately flips. The control unit 3 monitors this level change in real time. Once a trigger signal indicating that an object has been inserted is detected, the standby state is immediately interrupted, and the preset cleaning program is automatically started. The blowing mechanism 6 and the suction mechanism 7 are controlled to work in sequence, which simplifies the operator's steps, reduces human intervention, and improves production efficiency.

[0025] The placement slot 10 is provided with elastic clamping pieces 15 on both sides. When the FPC body 11 is vertically inserted into the placement slot 10, its two side surfaces will contact the raised elastic clamping pieces 15 and generate slight compression. The elastic clamping pieces 15 provide a continuous and gentle clamping force through their own deformation, stabilizing the FPC body 11 in the center position in the slot. This flexible contact effectively avoids scratches on the circuit board surface, plating wear, or damage to the internal circuit due to stress concentration that may be caused by rigid clamping. It is especially suitable for precision flexible circuit boards with extremely high requirements for surface condition, thereby ensuring a constant distance between the air blowing hole and the air suction hole and the board surface, making the cleaning effect more uniform and reliable.

[0026] The outer shell 2 is made of anti-static material. Using anti-static material can significantly reduce the surface resistivity of the outer shell 2, preventing the accumulation of high-potential static charges and fundamentally eliminating the problem of secondary pollution caused by electrostatic adsorption. At the same time, the anti-static outer shell 2 also avoids electrostatic shocks that may occur when operators come into contact with the equipment, thus improving the working environment.

[0027] The implementation principle of this embodiment is as follows: The operator inserts the FPC body 11 to be cleaned vertically into the narrow slot 10 of the placement seat 9, using its side as a reference, until the bottom of the FPC body 11 is fully in place. At this time, the FPC body 11 is stably clamped in a vertical state by the elastic clamping piece 15 in the slot. When the FPC body 11 is inserted into place, its plate will block the laser sensor 4 beam passing through the notch 12 at the bottom of the slot. The sensor detects this change in state and immediately sends a trigger signal to the control unit 3. After receiving the signal, the control unit 3 automatically starts the preset cleaning program. The blowing mechanism 6 is activated, and the clean airflow is blown out from the upper vent 13, impacting the surface of the FPC body 11, blowing away and raising the contaminants. Subsequently, the suction mechanism 7 is activated, generating a strong suction at the lower vent 14, which quickly sucks away and discharges the contaminants suspended in mid-air and retained in the deep slot. After the cleaning cycle is completed, the device automatically stops. The operator can quickly remove the clean FPC body 11 from the placement tank 10, thus completing the entire operation without the need for manual adsorption cleaning, which improves the cleaning efficiency of the FPC body 11.

[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An FPC cleaning device, characterized in that: The device includes a body (1), on which a cleaning assembly is provided. The cleaning assembly comprises a shell (2), a placement seat (9), a fixing block (8), a blowing mechanism (6), and a suction mechanism (7). The placement seat (9) is fixed inside the shell (2). The placement seat (9) has a placement groove (10) for vertically accommodating the FPC body (11). The fixing block (8) is symmetrically arranged at both ends of the placement seat (9) along its length. The fixing block (8) has a U-shaped slot (16) on the side facing the placement seat (9), and the cleaning assembly is connected by a U-shaped slot (16) for vertically accommodating the FPC body (11). The U-shaped slot (16) is clamped and fixed at both ends of the placement base (9). The side wall of the fixing block (8) is provided with an upper vent (13) and a lower vent (14). The upper vent (13) is located above the lower vent (14). The air outlet of the blowing mechanism (6) is connected to the upper vent (13). The air inlet of the suction mechanism (7) is connected to the lower vent (14). The body (1) is provided with a control unit (3). The control unit (3) is electrically connected to the blowing mechanism (6) and the suction mechanism (7) respectively.

2. The FPC cleaning device according to claim 1, characterized in that: The depth of the placement slot (10) is greater than the width of the FPC body (11).

3. The FPC cleaning device according to claim 1, characterized in that: Therefore, a laser sensor (4) is provided on one side of the body (1), and a notch (12) is provided in the center of the placement slot (10). The emitting end of the laser sensor (4) is positioned directly opposite the notch (12), and the laser sensor (4) is electrically connected to the control unit (3).

4. The FPC cleaning device according to claim 1, characterized in that: Elastic clamping pieces (15) are provided on both sides of the placement groove (10).

5. The FPC cleaning device according to claim 1, characterized in that: The outer shell (2) is made of antistatic material.

Images