Cleaning device for residual adhesive after cutting the solder surface of packaged products

Abstract

This application relates to a device for cleaning residual adhesive from the solder surface of packaged products, comprising a vacuum adsorption assembly, a sliding assembly, and a cleaning assembly. The vacuum adsorption assembly is used to adsorb the product fixed on a fixture. The sliding assembly includes a sliding frame, an adjusting plate, and a supporting plate. The sliding frame is slidably mounted on the vacuum adsorption assembly. The supporting plate is adjustablely connected to the sliding frame. The adjusting plate is fixedly mounted on the sliding frame and supports the supporting plate. The cleaning assembly is fixedly mounted on the supporting plate. Driven by the sliding assembly, the cleaning assembly can wipe the product on the fixture to remove residual adhesive. This cleaning device can quickly complete the cleaning of the product, thereby improving the cleaning efficiency and preventing any product from being missed.

Description

Technical Field

[0001] This application relates to packaging technology, specifically to a device for cleaning residual adhesive from the solder surface of a packaged product. Background Technology

[0002] QFN packaged products typically have one side as a plastic encapsulation surface and the other side as a circuit board soldering pin. After encapsulation, a large unit is formed by an array of individual products. This unit is then cut into individual products by a dicing blade. During cutting, the flat plastic encapsulation surface is attached to the UV film, exposing the soldering surface. A resin blade is used during the cutting process. The blade rotates at high speed, and a large amount of water is sprayed onto the cutting edge for cooling and washing away cutting debris. After cutting, the cut product surface is rinsed and blown away with high-pressure water inside the equipment to further remove cutting residue. Because the conventional QFN encapsulation surface is a flat surface, a large amount of cutting water is sprayed directly onto the soldering surface during the cutting process, so that the cutting plastic encapsulation residue and the UV adhesive cut into the UV film are immediately washed away by a large amount of water, thus minimizing contamination of the soldering surface.

[0003] However, in some QFN packages, especially MEMS products, bumps or metal plates are often added to the molded surface to achieve pressure and impact effects in practical applications. This makes the molded surface rough. When the bumps on the molded surface are greater than 100µm, and the individual package itself is only 2*2mm long and wide and 1mm thick, if the film is kept on the molded surface during cutting, insufficient adhesion due to insufficient UV film adhesive layer thickness will cause vibration during cutting, resulting in defective products. If the cut is no longer perpendicular in the vertical direction, or if the product is difficult to peel off after the film is applied, the welding side is usually attached to the side with the UV film. As a result, during the cutting process, the mixture of cutting water, plastic sealant residue, and UV adhesive is sprayed at a high speed of more than 20,000 revolutions per minute into the closed welding cavity, causing these mixtures to adhere firmly to the welding surface. Conventional ultrasonic and acetone methods are difficult to remove the mixtures from the welding surface, resulting in the welding surface of the product being heavily contaminated, which affects subsequent testing and board welding functions, causing a large number of defective products.

[0004] Currently, manual casting followed by wiping is used to remove residual adhesive, which has achieved good results. However, during the cleaning process, it was found that although following the prescribed wiping methods, techniques, and number of wiping cycles can effectively remove residual adhesive, human intervention makes it difficult to ensure that everyone adheres to the established operating rules. In particular, the hand gestures, the number of wiping passes, and the proper coverage of each product are difficult to execute, resulting in incomplete cleaning of customer products. This has led to customer complaints due to incomplete cleaning of some products, and the cleaning efficiency is relatively low. Therefore, a more efficient device is needed to solve this problem. Utility Model Content

[0005] To overcome the above-mentioned defects, this application provides a cleaning device for removing residual adhesive from the welding surface of packaged products. This cleaning device can quickly complete the cleaning of the products, thereby improving the cleaning efficiency of the products, and will not cause any products to be missed. It is easy to operate and ensures the consistency of the cleaned products.

[0006] The technical solution adopted by this application to solve its technical problem is:

[0007] A device for cleaning residual adhesive from the welding surface of packaged products includes a vacuum adsorption component, a sliding component, and a cleaning component. The vacuum adsorption component is used to adsorb the product fixed on a fixture. The sliding component includes a sliding frame, an adjusting plate, and a supporting plate. The sliding frame is slidably mounted on the vacuum adsorption component. The supporting plate is adjustablely connected to the sliding frame. The adjusting plate is fixedly mounted on the sliding frame and is used to support the supporting plate. The cleaning component is fixedly mounted on the supporting plate. Driven by the sliding component, the cleaning component can wipe the product on the fixture to remove residual adhesive from the product.

[0008] Optionally, the support plate is hinged to the sliding frame, the support plate is fixedly installed on the adjusting plate by locking screws, there is a gap between the support plate and the adjusting plate, and an elastic element is installed between the support plate and the adjusting plate.

[0009] Optionally, a guide rail is fixedly provided on the vacuum adsorption assembly, and the sliding frame is slidably mounted on the guide rail.

[0010] Optionally, the sliding frame includes a fixed plate and a slider fixedly mounted on the fixed plate. The slider is slidably mounted on the guide rail. The support plate is hinged to the fixed plate, and the adjusting plate is fixedly mounted on the back of the fixed plate.

[0011] Optionally, the adjusting plate includes a connecting part and an adjusting part that are fixedly connected. The connecting part is fixedly connected to the back of the fixed plate, the adjusting part is located below the support plate, and there is a gap between the adjusting part and the support plate. The support plate is fixed to the adjusting part by adjusting screws.

[0012] Optionally, the vacuum adsorption assembly includes a vacuum chamber plate and a vacuum platform mounted on the vacuum chamber plate. The vacuum chamber plate has a cavity inside, and the vacuum platform has adsorption holes that are connected to the cavity.

[0013] Optionally, the vacuum stage has a groove, and the clamp can cover part of the groove.

[0014] Optionally, the cleaning assembly includes a roller brush, a brush shaft, and a drive motor. The roller brush is fixedly mounted on the brush shaft, a support is fixedly mounted on the support plate, the brush shaft is rotatably mounted on the support, the drive motor is mounted on the support, and the drive motor is connected to the brush shaft.

[0015] Optionally, the roller brush wheel has a mounting hole, the support has an assembly hole, and the brush wheel shaft includes a fixedly connected joint and a rotating part. The joint is fixedly installed in the mounting hole, and the rotating part is movably installed in the assembly hole.

[0016] Optionally, the radial cross-section of the joint is non-circular, the radial cross-section of the rotating part is circular, and the shape of the mounting hole is the same as that of the joint.

[0017] The beneficial effects of this application are: the vacuum adsorption component can adsorb and fix the product, and the vacuum adsorption component is used to support the sliding component, the support plate is used to support the cleaning component, and the height of the support plate is adjustable to ensure that the cleaning component can fit against the surface of the product. By pushing the sliding component, the cleaning component is moved to complete the cleaning of the product, thereby improving the cleaning efficiency of the product and preventing some products from being missed. The operation is convenient and ensures the consistency of the cleaned products. Attached Figure Description

[0018] Figure 1 This is one of the structural schematic diagrams of the cleaning device in this application;

[0019] Figure 2 This is the second schematic diagram of the cleaning device in this application;

[0020] Figure 3 This is an exploded view of the cleaning device in this application;

[0021] Figure 4 This is a schematic diagram of the sliding frame in this application;

[0022] Figure 5 This is a schematic diagram of the vacuum adsorption assembly in this application;

[0023] Figure 6 This is a schematic diagram of the vacuum chamber plate in this application;

[0024] Figure 7 This is a schematic diagram of the vacuum platform structure in this application;

[0025] Figure 8 This is a schematic diagram of the guide rail structure in this application;

[0026] Figure 9This is a schematic diagram of the structure of the fixing plate in this application;

[0027] Figure 10 This is one of the structural schematic diagrams of the adjustment plate in this application;

[0028] Figure 11 This is the second schematic diagram of the structure of the adjusting plate in this application;

[0029] Figure 12 This is a schematic diagram of the structure of the roller brush in this application;

[0030] Figure 13 This is a schematic diagram of the brush wheel shaft in this application;

[0031] In the diagram: 100-vacuum adsorption assembly, 110-vacuum chamber plate, 111-chamber, 120-vacuum platform, 121-adsorption hole, 122-groove, 130-guide rail, 200-sliding assembly, 210-slider, 220-fixed plate, 221-hinge, 230-adjusting plate, 231-connecting part, 232-adjusting part, 240-support plate, 250-support, 251-assembly hole, 300-cleaning assembly, 310-brushing wheel, 311-mounting hole, 320-brushing wheel shaft, 321-jointing part, 322-rotating part, 330-drive motor, 400-clamp. Detailed Implementation

[0032] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the embodiments of this application. Obviously, the embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of the terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0035] Example: Figure 1-13 As shown, a device for cleaning residual adhesive from the welding surface of packaged products includes a vacuum adsorption component 100, a sliding component 200, and a cleaning component 300. The vacuum adsorption component 100 is used to adsorb and fix the product on the fixture 400. The sliding component 200 includes a sliding frame, an adjusting plate 230, and a support plate 240. The sliding frame is slidably mounted on the vacuum adsorption component 100. The support plate 240 is positionally adjustable and connected to the sliding frame. The adjusting plate 230 is fixedly mounted on the sliding frame and is used to support the support plate 240. The cleaning component 300 is fixedly mounted on the support plate 240. Driven by the sliding component 200, the cleaning component 300 can wipe the product on the fixture 400 to remove residual adhesive from the product. In use, the product (i.e., the packaged body) is adhered to the UV film, which is then attached to the clamp 400. The clamp 400 is then placed on the vacuum adsorption assembly 100, with the surface of the product to be cleaned (the welding surface) facing upwards. The vacuum adsorption assembly 100 adsorbs and fixes the UV film. The position of the support plate 240 is adjusted to regulate the height of the cleaning assembly 300, ensuring it contacts the product. Then, the sliding assembly 200 is pushed, causing the cleaning assembly 300 to move and clean the welding surface of the product across the entire UV film. In this application, the vacuum adsorption assembly 100 can adsorb and fix the product, and it supports the sliding assembly 200. The support plate 240 supports the cleaning assembly 300, and its height is adjustable to ensure the cleaning assembly 300 adheres to the product surface. By pushing the sliding assembly 200 to move the cleaning assembly 300, the product cleaning is completed, thus improving cleaning efficiency and preventing any product from being missed. The operation is convenient and ensures the consistency of the cleaned products.

[0036] like Figure 1-4 As shown, the support plate 240 is hinged to the sliding frame, and the support plate 240 is fixedly installed on the adjusting plate 230 by locking screws. There is a gap between the support plate 240 and the adjusting plate 230, and an elastic element is installed between them. The locking screws can be used to adjust the height of the cleaning assembly 300 by utilizing the support of the adjusting plate 230. Optionally, the support plate 240 is hinged to the sliding frame by hinge 221, and the tilt of the support plate 240 relative to the sliding frame can be adjusted by adjusting the locking screws, thereby adjusting the height of the cleaning assembly 300. The gap between the support plate 240 and the adjusting plate 230 provides space for adjusting the tilt of the support plate 240. The elastic element can be a spring, and the force exerted on the product by the cleaning assembly 300 can be adjusted by adjusting the compression of the spring.

[0037] like Figure 2 As shown, a guide rail 130 is fixedly mounted on the vacuum adsorption assembly 100, and the sliding frame is slidably mounted on the guide rail 130. Two parallel guide rails 130 are provided on the vacuum adsorption assembly 100, and the two sides of the sliding frame are slidably mounted on the guide rails 130 respectively to improve the stability of the sliding frame's movement. In one possible embodiment, the length of the guide rail 130 is designed to be 460mm, which can accommodate a product cleaning range of 300mm.

[0038] like Figure 1-2 As shown, the sliding frame includes a fixed plate 220 and a slider 210 fixedly installed on the fixed plate 220. The slider 210 is slidably installed on the guide rail 130. The support plate 240 is hinged to the fixed plate 220. The adjustment plate 230 is fixedly installed on the back of the fixed plate 220.

[0039] like Figure 2 , Figure 9-10 As shown, the adjusting plate 230 includes a connecting part 231 and an adjusting part 232 fixedly connected. The connecting part 231 is fixedly connected to the back of the fixing plate 220, and the adjusting part 232 is located below the support plate 240, with a gap between the adjusting part 232 and the support plate 240. The support plate 240 is fixed to the adjusting part 232 by adjusting screws. In one possible implementation, both the connecting part 231 and the adjusting part 232 are plate-shaped structures. The thickness of the connecting part 231 is greater than that of the adjusting part 232, and the front of the connecting part 231 is higher than the front of the adjusting part 232, so as to form a gap between the front of the adjusting part 232 and the back of the support plate 240. The back of the connecting part 231 is flush with the back of the adjusting part 232.

[0040] like Figure 5-7As shown, the vacuum adsorption assembly 100 includes a vacuum chamber plate 110 and a vacuum platform 120 mounted on the vacuum chamber plate 110. The vacuum chamber plate 110 has a cavity 111, and the vacuum platform 120 has adsorption holes 121 connected to the cavity 111. The vacuum chamber plate 110 is connected to an external vacuum tube, introducing vacuum into the cavity and adsorbing and fixing the UV film through the adsorption holes 121. Simultaneously, magnets are installed on the vacuum platform 120 to adsorb and fix the clamp 400, ensuring stable adhesion of the product to the UV film during cleaning without movement. This allows the product on the UV film to withstand greater force, enabling normal cleaning and improving the cleaning effect.

[0041] like Figure 1 and Figure 7 As shown, the vacuum table 120 has a groove 122, and the clamp 400 can cover part of the groove 122. In one possible embodiment, the upper surface of the vacuum table 120 has a rectangular structure, and four grooves 122 are provided around the vacuum table 120, that is, a groove 122 is provided on the upper surface of each side to facilitate the removal of the clamp.

[0042] like Figure 1 and Figure 7 As shown, the cleaning assembly 300 includes a roller brush 310, a brush shaft 320, and a drive motor 330. The roller brush 310 is fixedly mounted on the brush shaft 320. A support 250 is fixedly mounted on the support plate 240, and the brush shaft 320 is rotatably mounted on the support 250. The drive motor 330 is mounted on the support 250 and connected to the brush shaft 320. The roller brush 310 is made of non-woven fabric and is made of anti-static black material, which ensures that no loose fibers stick to the product and that no static electricity is generated that could adversely affect the product. The brush shaft 320 is rotatably mounted on the support 250 via bearings. The drive motor 330 drives the brush shaft 320 to rotate, thereby driving the roller brush 310. In practical applications, the brush shaft 320 is fully loaded with roller brushes 310, with adjacent roller brushes 310 fitting together.

[0043] like Figure 3 , Figure 12-13 As shown, the roller brush 310 has a mounting hole 311, the support 250 has an assembly hole 251, and the brush wheel shaft 320 includes a fixedly connected joint 321 and a rotating part 322. The joint 321 is fixedly installed in the mounting hole 311, and the rotating part 322 is movably installed in the assembly hole 251.

[0044] like Figure 12-13As shown, the radial cross-section of the connecting portion 321 is non-circular, while the radial cross-section of the rotating portion 322 is circular. The shape of the mounting hole 311 is the same as that of the connecting portion 321. The connecting portion 321 is tightly fitted into the mounting hole 311, thereby ensuring that the brush wheel shaft 320 and the roller brush wheel 310 rotate synchronously. Optionally, the radial cross-section of the connecting portion 321 may include an oblong, polygonal, elliptical, or other irregular shapes. The brush wheel shaft 320 is generally rod-shaped, with a rotating portion 322 fixedly installed at each end of the connecting portion 321. Two supports 250 are fixedly installed on the support plate 240, and the two rotating portions 322 are respectively inserted into the mounting holes 251 of one of the supports 250.

[0045] In use, the product, i.e. the package body, is attached to the UV film, the UV film is attached to the clamp 400, and then the clamp 400 is placed on the vacuum adsorption component 100 with the surface of the product to be cleaned, i.e. the welding surface, facing upwards. The vacuum adsorption component 100 adsorbs and fixes the UV film.

[0046] Adjusting the locking screws adjusts the tilt of the support plate 240 relative to the fixed plate 220, thereby adjusting the height of the roller brush 310 so that the roller brush 310 fits against the welding surface of the product. Starting the drive motor 330 causes the roller brush 310 to rotate, which in turn pushes the sliding component 200. The sliding component 200 causes the roller brush 310 to move on the product, thereby cleaning the welding surface of the product on the entire UV film.

[0047] It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be determined by the appended claims.

Claims

1. A device for cleaning residual adhesive from the soldering surface of packaged products, characterized in that: The device includes a vacuum adsorption assembly (100), a sliding assembly (200), and a cleaning assembly (300). The vacuum adsorption assembly (100) is used to adsorb and fix products on a fixture (400). The sliding assembly (200) includes a sliding frame, an adjusting plate (230), and a support plate (240). The sliding frame is slidably mounted on the vacuum adsorption assembly (100). The support plate (240) is positionally adjustable and connected to the sliding frame. The adjusting plate (230) is fixedly mounted on the sliding frame and is used to support the support plate (240). The cleaning assembly (300) is fixedly mounted on the support plate (240). Driven by the sliding assembly (200), the cleaning assembly (300) can wipe the products on the fixture (400) to remove residual adhesive from the products.

2. The device for cleaning residual adhesive from the welding surface of packaged products according to claim 1, characterized in that: The support plate (240) is hinged to the sliding frame. The support plate (240) is fixedly installed on the adjusting plate (230) by locking screws. There is a gap between the support plate (240) and the adjusting plate (230), and an elastic element is installed between the support plate (240) and the adjusting plate (230).

3. The device for cleaning residual adhesive from the welding surface of packaged products according to claim 1, characterized in that: The vacuum adsorption assembly (100) is fixedly provided with a guide rail (130), and the sliding frame is slidably mounted on the guide rail (130).

4. The device for cleaning residual adhesive from the welding surface of packaged products according to claim 3, characterized in that: The sliding frame includes a fixed plate (220) and a slider (210) fixedly installed on the fixed plate (220). The slider (210) is slidably installed on the guide rail (130). The support plate (240) is hinged to the fixed plate (220). The adjustment plate (230) is fixedly installed on the back of the fixed plate (220).

5. The device for cleaning residual adhesive from the welding surface of packaged products according to claim 4, characterized in that: The adjusting plate (230) includes a connecting part (231) and an adjusting part (232) that are fixedly connected. The connecting part (231) is fixedly connected to the back of the fixing plate (220). The adjusting part (232) is located below the support plate (240), and there is a gap between the adjusting part (232) and the support plate (240). The support plate (240) is fixed to the adjusting part (232) by adjusting screws.

6. The device for cleaning residual adhesive from the welding surface of packaged products according to claim 1, characterized in that: The vacuum adsorption assembly (100) includes a vacuum chamber plate (110) and a vacuum platform (120) mounted on the vacuum chamber plate (110). The vacuum chamber plate (110) has a cavity (111) inside, and the vacuum platform (120) has an adsorption hole (121) on it. The adsorption hole (121) is connected to the cavity (111).

7. The device for cleaning residual adhesive from the welding surface of packaged products according to claim 6, characterized in that: The vacuum platform (120) is provided with a groove (122), and the clamp (400) can cover part of the groove (122).

8. The device for cleaning residual adhesive from the welding surface of packaged products according to claim 1, characterized in that: The cleaning assembly (300) includes a roller brush (310), a brush shaft (320), and a drive motor (330). The roller brush (310) is fixedly mounted on the brush shaft (320). A support (250) is fixedly mounted on the support plate (240). The brush shaft (320) is rotatably mounted on the support (250). The drive motor (330) is mounted on the support (250) and connected to the brush shaft (320).

9. The device for cleaning residual adhesive from the welding surface of packaged products according to claim 8, characterized in that: The roller brush (310) has a mounting hole (311), the support (250) has an assembly hole (251), and the brush wheel shaft (320) includes a fixedly connected connecting part (321) and a rotating part (322). The connecting part (321) is fixedly installed in the mounting hole (311), and the rotating part (322) is movably installed in the assembly hole (251).

10. The device for cleaning residual adhesive from the welding surface of packaged products according to claim 9, characterized in that: The radial cross-section of the connecting part (321) is non-circular, the radial cross-section of the rotating part (322) is circular, and the shape of the mounting hole (311) is the same as that of the connecting part (321).

Images