An automatic air blowing cleaning device applied to a packaging equipment

Abstract

This utility model relates to the field of packaging equipment and discloses an automatic air-blowing cleaning device for packaging equipment. The device includes an air source, a solenoid valve, a flow regulating valve, an intermediate relay, a sensor, an air supply pipeline, and an air-blowing nozzle. The air inlet of the solenoid valve is connected to the air source via the air supply pipeline, and the air outlet is connected to the flow regulating valve, which in turn is connected to the air-blowing nozzle, enabling targeted cleaning of specific areas. The solenoid valve receives signals from the sensor via the intermediate relay to control its opening and closing. The sensor is located at the end of the stroke of the pressure head or platen of the packaging equipment to detect the operational status in real time. This device automatically starts the air-blowing action after the pressure head or platen completes the pressing operation, promptly removing aluminum powder, debris, and other foreign objects from the equipment base or track surface. This effectively prevents foreign object accumulation from causing scratches or dents on the product, improving the yield of finished products, extending the service life of the equipment, and demonstrating good automation and practicality.

Description

Technical Field

[0001] This utility model belongs to, but is not limited to, the field of automatic blowing and cleaning technology, and particularly relates to an automatic air blowing cleaning device applied to packaging equipment. Background Technology

[0002] In the ASM aluminum wire Hercules equipment, the base structure itself is not equipped with an air blowing function, which is a significant design limitation in daily use. Especially in the DB blanking process, dust, aluminum shavings, or other foreign objects may adhere to the back of the DBC board. If these contaminants are not cleaned in time, they are very easy to fall off and accumulate in the base area of ​​the equipment, thereby affecting the stability and reliability of subsequent WB operations.

[0003] As production continues, these foreign objects are dragged and pressed down during the repeated operation of the equipment's conveyor claws, gradually accumulating and forming sources of abrasion. This causes irreversible defects such as minor scratches, indentations, and even dents on the bottom surface of the product. Simultaneously, the track surface, due to long-term exposure to the aluminum wire processing environment, easily accumulates aluminum powder, alumina particles, and processing debris. These contaminants not only affect the positioning accuracy and smoothness of mechanical movement but may also lead to decreased product yield and increased rework rates. Therefore, it is urgent to introduce an air-blowing device through structural improvements to achieve real-time cleaning of foreign objects and automatic protection of the base area. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an automatic purging device for the track of an ASM aluminum wire machine.

[0005] This utility model is implemented as follows: an automatic air blowing cleaning device for packaging equipment includes an air source, a solenoid valve, a flow regulating valve, an intermediate relay, a sensor, an air supply pipeline, and an air blowing nozzle. The air inlet of the solenoid valve is connected to the air source through the air supply pipeline, the air outlet is connected to the flow regulating valve, and the outlet of the flow regulating valve is connected to the air blowing nozzle.

[0006] Furthermore, the solenoid valve is electrically connected to an intermediate relay, the intermediate relay is electrically connected to a sensor, and the sensor is installed at the end of the stroke of the pressure head or pressure plate of the packaging equipment.

[0007] Furthermore, the solenoid valve, flow regulating valve, and intermediate relay are installed in the electrical control area inside the rear cover of the equipment by screws or guide rail clips, and the air blowing nozzle is installed on the side edge of the Bondhead support plate by a bracket and a locking nut.

[0008] Furthermore, the air supply pipeline adopts a dual-branch structure, which connects to two independent air nozzles through a split connector. The two air nozzles are respectively located in the Bondhead1 and Bondhead2 areas.

[0009] Furthermore, the flow regulating valve is of a rotatable structure, and its adjusting knob faces the outside of the equipment side plate. The flow regulating valve is connected between the air outlet end of the solenoid valve and the blowing nozzle through a quick-connecting air pipe.

[0010] Furthermore, the intermediate relay, the solenoid valve and the sensor are all powered by a 24V DC power supply. The 24V DC power supply is electrically connected to each electrical component through wires and is centrally wired in the equipment's electrical control terminal board.

[0011] In current mainstream packaging equipment (such as ASM Hercules aluminum wire bonding machines), the equipment base usually lacks an automatic cleaning function. Especially during the DB blanking or WB operation process, aluminum powder, oxidation particles and tiny debris are inevitably generated on the back of the DBC board or in the environment. These foreign substances are deposited on the surface of the base during repeated transmission and operation cycles, which can easily cause equipment track contamination and workpiece scratching, becoming an important hidden danger affecting the yield and equipment stability. Traditional cleaning methods rely on manual labor or regular shutdown processing, with low efficiency and lagging response, making it difficult to meet the high requirements for automation and cleanliness in modern packaging lines.

[0012] To solve the above problems, the present utility model proposes an embedded automatic blowing cleaning device. By modularly integrating a solenoid valve, a flow regulating valve, an intermediate relay and a sensor inside the packaging equipment, it realizes full-process dynamic sensing and linkage control. The sensor is deployed at the end position of the press head or platen stroke, which can accurately capture the completion nodes of key process steps, trigger the action of the intermediate relay, and then drive the solenoid valve to quickly open, realizing directional, instantaneous and high-pressure blowing, intervening in the occurrence mechanism of foreign substance deposition from the source and breaking the lag of traditional passive cleaning.

[0013] Structurally, by compactly arranging the solenoid valve and control components in the electrical control module of the equipment rear cover, and arranging the nozzle in the Bondhead area through a bracket, the system embedding is completed without changing the original mechanical framework, improving the maintainability and wiring rationality. Adopting a dual-channel branch air pipe structure, it covers both the Bondhead1 and Bondhead2 areas at once, improving the cleaning coverage and actual operation stability. The knob-type flow valve configuration enables external adjustment, ensuring accurate and controllable air pressure output, facilitating flexible adaptation by process engineers under different materials and operating conditions.

[0014] The overall system is uniformly powered by a 24V DC power supply and integrated into the electrical control terminal board, avoiding the system fragmentation problem caused by introducing additional power supplies. Compared with traditional solutions, this system shows significant advantages in terms of cleaning efficiency, response speed, equipment compatibility and maintenance convenience. Especially in semiconductor packaging scenarios with high cleanliness requirements, it provides a reliable guarantee for the stable operation of the equipment and product consistency, demonstrating good engineering practical value and promotion potential. Attached Figure Description

[0015] Figure 1 This is a structural diagram of an automatic purging device for the track of an ASM aluminum wire machine provided in an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection between the solenoid valve and the flow control valve provided in this embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the dual-branch structure of the gas supply pipeline provided in this embodiment of the utility model.

[0018] In the diagram: 1. 24V DC power supply; 2. Sensor; 3. Intermediate relay; 4. Gas tank; 5. Solenoid valve; 6. Flow control valve; 7. Gas nozzle; 8. Y-connector; 9. Bondhead 1 area; 10. Bondhead 2 area. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0020] like Figure 1 As shown, this device is installed in the base area of ​​the ASM Haercules aluminum wire welding machine and mainly consists of a solenoid valve 5, a flow control valve 6, an intermediate relay 3, an air supply line, and an air nozzle. The solenoid valve 5 is installed inside the rear cover of the equipment and fixed to the electrical control module bracket with screws. Its air inlet is connected to the output end of the air tank 4 via an air pipe, and its air outlet is connected to the flow control valve 6. The flow control valve is then connected to the air nozzle installed on the side of the Bondhead area via a flexible hose. The overall layout unfolds sequentially from the rear cavity to the front of the equipment, ensuring modular wiring and convenient maintenance.

[0021] Intermediate relay 3 is fixedly mounted on the power control terminal board. Its control terminal input comes from the output signal of sensor 2, which is commonly a sensor or limit switch for detecting the height of the pressure plate. Sensor 2 is located at the end of the downward path of the pressure plate and is screwed into the opening on the side wall of the equipment. It can accurately sense whether the pressure plate has been pressed to the set height, and then input the switching signal to intermediate relay 3.

[0022] In terms of gas circuit control, gas tank 4 provides a constant pressure source. A branch of the main gas supply pipe is connected to the inlet of solenoid valve 5 via a tee connector. The connection between solenoid valve 5 and flow control valve 6 uses a quick-connect connector to avoid leakage caused by frequent plugging and unplugging. The flow valve is installed on the internal side plate of the equipment, with the adjustment knob facing outward for easy manual fine-tuning. Its function is to set the upper limit of the outflow velocity, ensuring that the airflow at the nozzle can effectively blow away foreign objects without interfering with the operation of the pressure plate.

[0023] In terms of control logic, after the equipment is powered on, the 24V DC power supply 1 supplies the sensor 2 and the intermediate relay 3. When the pressure plate moves to the set low position, the sensor sends a closing signal, causing the intermediate relay 3 to engage and control the solenoid valve 5 to open. At this time, the airflow is released and guided to the nozzle through the flow valve with a set flow rate, completing the precise air blowing cleaning of the Bondhead area and the area around the pressure plate.

[0024] Once the pressure plate returns to its original position and moves upward, sensor 2 disconnects the signal, the relay releases, solenoid valve 5 is de-energized and closes, the entire airflow path is cut off, and the nozzle stops blowing air. This linkage control method ensures that cleaning operations are only performed when the pressure plate has fallen into place, without affecting the normal movement trajectory of the operating head or pressure plate, thus balancing operational safety and cleaning requirements.

[0025] In terms of assembly process, the nozzle assembly is fixed to the side edge of the Bondhead support plate and a stable angle is maintained by a small bracket and a locking nut. The nozzle is tilted slightly downward to fit the contour of the pressure plate. All electrical parts are centrally routed to the electrical control area of ​​the equipment's rear cover and organized using cable ties. This ultimately forms an integrated, fast-responding, and precise automatic air blowing cleaning system, effectively improving the pass rate of the DBC product's back appearance.

[0026] like Figure 2 As shown, the air blowing control system is concealed inside the rear cover of the ASM Hectores aluminum wire welder. Removing the rear cover reveals the central functional module, which compactly integrates a three-position five-way solenoid valve assembly, a precision pressure regulating valve, a throttle valve, and a safety relay. Different air paths are distinguished by colored hoses. After being regulated by the manifold, the gas is divided into left and right paths and delivered to the bonding area. The corresponding nozzles are fixed with ball joints, allowing for quick alignment of weld points of different sizes. This layout makes full use of the rear cavity space, significantly shortening the air path and reducing pressure loss. The quick-release design of the rear cover facilitates valve core maintenance and pressure calibration. The modular installation with DIN rails allows all control wiring harnesses to be stored in the upper cable tray, avoiding intersections with servo and vision cables, minimizing electromagnetic interference and improving system reliability.

[0027] like Figure 3As shown, the air blowing control system of this device is installed inside the rear cover of the ASM Haercules aluminum wire welding machine. Structurally, it consists of a power module, intermediate relay 3, solenoid valve 5, flow regulating valve, and dual-path air distribution pipes. The air path is introduced from the main compressed air pipe, controlled by the main solenoid valve 5, and then split into two paths through a Y-connector, which are sent to the air nozzles 7 in Bondhead 1 and Bondhead 2 areas respectively to complete the synchronous air blowing operation.

[0028] Each bondhead is equipped with a set of sensors to detect the position of the pressure head. When the pressure head is in the downward state and reaches the set stroke position, the sensor outputs an electrical signal to activate the intermediate relay 3. After the relay is energized, it drives the solenoid valve 5 to open, thereby opening the air passage and releasing gas to the air nozzle 7.

[0029] The blowing gas is preset to a fixed pressure and flow rate in the flow regulating valve to ensure that the airflow ejected from the nozzle 7 is stable, continuous and directional. This does not interfere with the normal movement of the Bonding head, but can also accurately blow away potential foreign objects, dust, aluminum shavings and other microparticles around the pressure head, ensuring the cleanliness of the back of the DBC.

[0030] When the pressure head is lifted and the sensor detection signal is disconnected, the intermediate relay 3 is released, the solenoid valve 5 is closed, the airflow channel is cut off, and the air nozzle 7 stops blowing air, thus avoiding energy waste or interference vortex caused by prolonged ineffective blowing.

[0031] The entire control logic is based on a closed-loop "action-feedback-control-execution" chain, requiring no additional control commands. The sensors directly drive the electrical actuators to complete the response. The two Bondhead structures and logics are completely identical, enabling parallel control without mutual interference.

[0032] During the assembly process, all modules of the system are fixed to the internal electrical control board of the rear cover through standard quick-connect terminals and guide rail clips. The air pipes are connected with high-pressure hoses and stainless steel quick connectors, making installation and maintenance convenient. The overall structure is compact and reliable, and it is suitable for air blowing and cleaning retrofitting solutions for various types of packaging equipment.

[0033] The following is a summary of defective data before equipment modification:

[0034]

[0035] The following is a statistical summary of the defective data after the equipment modification:

[0036]

[0037] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the technical scope disclosed in this utility model, and within the spirit and principles of this utility model, should be included within the protection scope of this utility model.

Claims

1. An automatic air-blowing cleaning device for packaging equipment, characterized in that, It includes an air source, a solenoid valve, a flow regulating valve, an intermediate relay, a sensor, an air supply line, and an air blowing nozzle. The air inlet of the solenoid valve is connected to the air source through the air supply line, the air outlet is connected to the flow regulating valve, and the outlet of the flow regulating valve is connected to the air blowing nozzle.

2. The automatic air-blowing cleaning device according to claim 1, characterized in that, The solenoid valve is electrically connected to the intermediate relay, the intermediate relay is electrically connected to the sensor, and the sensor is installed at the end of the stroke of the pressure head or pressure plate of the packaging equipment.

3. The automatic air-blowing cleaning device according to claim 1, characterized in that, The solenoid valve, flow regulating valve, and intermediate relay are installed in the electrical control area inside the rear cover of the equipment by screws or guide rail clips. The air blowing nozzle is installed on the side edge of the Bondhead support plate by a bracket and a locking nut.

4. The automatic air-blowing cleaning device according to claim 1, characterized in that, The gas supply pipeline adopts a dual-branch structure, which is connected to two independent air blowing nozzles through a split connector. The two air blowing nozzles are respectively located in the Bondhead1 and Bondhead2 areas.

5. The automatic air-blowing cleaning device according to claim 1, characterized in that, The flow regulating valve has a rotatable structure, with its adjustment knob facing outwards from the side panel of the equipment. The flow regulating valve is connected between the air outlet of the solenoid valve and the air nozzle via a quick-connect air hose.

6. The automatic air-blowing cleaning device according to claim 1, characterized in that, The intermediate relay, solenoid valve and sensor are all powered by a 24V DC power supply. The 24V DC power supply is electrically connected to each electrical component through wires and is centrally wired in the equipment's electrical control terminal board.

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