Ultrasonic cleaning clamp

Abstract

The utility model discloses an ultrasonic cleaning clamp which comprises a clamp base, a plurality of vertical storage assemblies and a plurality of horizontal storage assemblies, wherein the vertical storage assemblies and the horizontal storage assemblies are arranged on the clamp base. By means of the mode, the ultrasonic cleaning clamp can position and fix a PCB, the cleaning quality and effect are improved, the product yield is improved, the cleaning efficiency is improved, operation is convenient and fast, management is convenient, and the universality and adaptability of the clamp are improved.

Description

Technical Field

[0001] This utility model relates to the field of PCB cleaning technology, and in particular to an ultrasonic cleaning fixture. Background Technology

[0002] The PCA process has certain requirements for the surface cleanliness of the PCB before assembly. Generally, an ultrasonic cleaning process is used to remove dirt, dust and other contaminants from the PCB before assembly, thereby improving the surface cleanliness and quality for the next assembly and soldering process.

[0003] However, the current ultrasonic cleaning process for PCBs still has the following drawbacks:

[0004] a. Since more than 100 small PCBs are cleaned at a time, the diameter of the central hole of these small PCBs is inconsistent and there are multiple specifications. Moreover, there is no fixing device in the ultrasonic cleaner. When multiple PCBs are placed in the cleaning tank, they will overlap, which will lead to the overlapping parts of the PCBs not being cleaned properly. It will also cause confusion between PCBs of different specifications, making it inconvenient to distinguish them.

[0005] b. The tiny bubbles in the cleaning fluid vibrate under the influence of the sound field. Without clamps to hold the PCB in place, they will rub against each other, causing scratches and rendering the PCB unusable.

[0006] c. Traditional fixture designs place the PCB horizontally, which results in low size utilization due to the limitations of the ultrasonic cleaning tank. Furthermore, the PCB cannot be fixed using a pressure head structure, otherwise it will cause surface scratches. Utility Model Content

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] An ultrasonic cleaning fixture is provided, comprising: a fixture base and several sets of vertical storage components and horizontal storage components disposed on the fixture base.

[0009] The vertical storage assembly is used to place PCBs with inconsistent central circular hole sizes. It includes a vertical storage base, a storage step, and a vertical guide rod. The vertical storage base has a conical structure. The vertical storage base and the vertical guide rod are detachably mounted on the fixture base, so that the vertical storage base passes through the central circular hole of the PCB and the vertical guide rod passes through the circular hole on the side of the PCB to limit the PCB's position. This allows the PCBs to be stacked in order of decreasing central circular hole diameter, and adjacent PCBs do not overlap.

[0010] The horizontal storage assembly is used to place PCBs with uniform central circular holes. It includes a fixed base, a first horizontal guide rod, a positioning groove, a second horizontal guide rod, a horizontal limiting rod, a pressure plate, a snap fastener, and a snap fastener seat. The fixed base is disposed on the fixture base. One end of the first horizontal guide rod, the second horizontal guide rod, and the horizontal limiting rod is connected to the fixed base, while the other end is suspended. This allows the first horizontal guide rod to pass through the central circular hole of the PCB, and the second horizontal guide rod to pass through the side circular hole of the PCB, thereby restricting the PCB. The first horizontal guide rod is provided with the positioning groove to position the PCB, and a gap is provided between two adjacent PCBs. The horizontal limiting rod is located below the first horizontal guide rod and contacts the bottom of the PCB. The pressure plate is movably connected to the fixed base, so that the bottom surface of the pressure plate contacts the top of the PCB, thereby cooperating with the horizontal limiting rod to restrict the vertical displacement of the PCB. The snap fastener is rotatably disposed on the top of the snap fastener seat to press the pressure plate tightly onto the fixed base.

[0011] In a preferred embodiment of the present invention, the clamp base is provided with a handle.

[0012] In a preferred embodiment of the present invention, the fixture base is provided with a plurality of through holes.

[0013] In a preferred embodiment of the present invention, the outer peripheral wall of the vertical storage base is provided with a plurality of annular storage steps for supporting the PCB, and the diameter of the storage steps increases sequentially from top to bottom.

[0014] In a preferred embodiment of this utility model, the vertical storage base and the vertical guide rod are detachably connected to the clamp base by screws.

[0015] In a preferred embodiment of the present invention, the first horizontal guide rod and the second horizontal guide rod are detachably connected to the fixing base by screws.

[0016] In a preferred embodiment of this utility model, the diameter of the first horizontal guide rod is larger than the diameter of the second horizontal guide rod.

[0017] In a preferred embodiment of this utility model, the cross-section of the positioning groove is a V-shaped structure, and the included angle of the V-shaped structure is 90°.

[0018] In a preferred embodiment of the present invention, a snap fastener is provided on each side of the fixing base.

[0019] In a preferred embodiment of this utility model, the buckle is rotatably connected to the buckle seat via a rotating shaft.

[0020] The beneficial effects of this utility model are: it can position and fix the PCB, which not only improves the quality and effect of cleaning and increases the product yield, but also improves the cleaning efficiency, is easy to operate and manage, and improves the versatility and adaptability of the fixture. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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, wherein:

[0022] Figure 1 This is a schematic diagram of a preferred embodiment of an ultrasonic cleaning fixture according to the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a preferred embodiment of the ultrasonic cleaning fixture of this utility model after mounting the PCB.

[0024] Figure 3 This is a side view of a preferred embodiment of an ultrasonic cleaning fixture according to the present invention.

[0025] Figure 4 This is a partial structural schematic diagram of a preferred embodiment of an ultrasonic cleaning fixture of this utility model. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Please see Figure 1-4 The embodiments of this utility model include:

[0028] An ultrasonic cleaning fixture includes: a fixture base 1, two sets of vertical storage components 2, and two sets of horizontal storage components 3. The two sets of horizontal storage components are arranged in parallel on the fixture base, and the two sets of vertical storage components are arranged on the fixture base on the side of the horizontal storage components.

[0029] Further preferably, the fixture base is provided with a handle 4 to facilitate the picking up and putting down of the fixture.

[0030] Further preferably, the fixture base is provided with multiple through holes to allow cleaning fluid to pass through, which can also reduce the weight of the fixture.

[0031] The vertical storage assembly is used to place PCBs 5 with inconsistent hole sizes. Its structure includes a vertical storage base 21, a storage step 22, and a vertical guide rod 23.

[0032] The vertical storage base has a conical structure and is detachably mounted on the fixture base. The vertical guide rod is detachably mounted on the fixture base on the side of the vertical storage base, so that the vertical storage base passes through the round hole in the middle of the PCB and the vertical guide rod passes through the round hole on the side of the PCB, thereby restricting the horizontal displacement and axial rotation of the PCB.

[0033] The outer wall of the vertical storage base is evenly distributed with multiple horizontally arranged annular storage steps to support the PCB. The diameter of the storage steps increases from top to bottom, so that the PCBs can be installed in order of decreasing hole diameter, and there are gaps between adjacent PCBs.

[0034] In a further preferred embodiment, the vertical storage base and the vertical guide rod are connected to the fixture base by screws.

[0035] The horizontal storage assembly is used to place PCB components with uniform circular hole sizes. Its structure includes a fixing base 31, a first horizontal guide rod 32, a positioning groove 33, a second horizontal guide rod 34, a horizontal limiting rod 35, a pressure plate 36, a snap fastener 37, and a snap fastener base 38.

[0036] The fixed base is set on the fixture base. One end of the first horizontal guide rod, the second horizontal guide rod, and the horizontal limiting rod are connected to the fixed base, and the other end is suspended. This allows the first horizontal guide rod to pass through the round hole in the middle of the PCB and the second horizontal guide rod to pass through the round hole on the side of the PCB, thereby limiting the horizontal displacement and axial rotation of the PCB. The first horizontal guide rod is provided with a positioning groove for positioning the PCB, so that the PCB is evenly distributed and there is a gap between two adjacent PCBs, thereby improving the cleaning effect and cleaning efficiency.

[0037] Meanwhile, the horizontal limiting rod is located below the first horizontal guide rod and contacts the bottom of the PCB. The pressure plate is movably connected to the top of the fixed base, so that the bottom surface of the pressure plate contacts the top of the PCB, thereby cooperating with the horizontal limiting rod to limit the vertical displacement of the PCB. The snap fastener is set on both sides of the fixed base, and the snap fastener can be rotatably set on the top of the snap fastener to press the pressure plate tightly onto the fixed base.

[0038] More preferably, the first horizontal guide rod and the second horizontal guide rod are detachably connected to the fixing seat by screws.

[0039] More preferably, the diameter of the first horizontal guide rod is larger than the diameter of the second horizontal guide rod.

[0040] More preferably, the cross-section of the positioning groove is a V-shaped structure, and its included angle is 90°.

[0041] A further preferred embodiment has a smooth portion in the middle of the first horizontal guide rod to facilitate disassembly and processing.

[0042] In a further preferred embodiment, the support member is detachably mounted on the fixture base, and its top contacts the bottom surface of the pressure plate to provide a certain support for the pressure plate, thereby ensuring that the PCB board is pressed down while preventing the rear of the pressure plate from falling and damaging the PCB board due to gravity.

[0043] In a further preferred embodiment, the snap fastener is rotatably connected to the snap fastener base via a rotating shaft.

[0044] In use, the PCBs are first categorized: one category consists of PCBs with uniform hole sizes. These are installed one by one from one side of the horizontal guide rod and secured in the positioning groove. After all PCBs are installed, the pressure plate is mounted on the fixed base, and the clamps are rotated to secure the pressure plate, preventing PCB displacement during ultrasonic cleaning. The other category consists of PCBs with inconsistent hole sizes. These are then fitted one by one onto the vertical storage base and vertical guide rod according to the diameter of the central hole, from largest to smallest, for positioning and stability. The entire fixture is then placed into the ultrasonic cleaning tank for cleaning, maximizing the single-use of the ultrasonic cleaning tank and improving cleaning efficiency.

[0045] The beneficial effects of this ultrasonic cleaning fixture are:

[0046] 1. It can position and fix PCBs, preventing them from being scratched and scrapped due to friction during ultrasonic cleaning, thus improving product yield and conforming to actual production processes. More than 100 PCB sub-boards in a panel can be cleaned at once, improving efficiency and facilitating production management.

[0047] 2. It can prevent PCB overlap, improving the quality and effectiveness of cleaning;

[0048] 3. The clamps can be adjusted according to the characteristics of the product, making them convenient and easy to use;

[0049] 4. By adopting vertical and horizontal storage components, the ultrasonic cleaning applications of PCBs of different specifications are met, improving the versatility and adaptability of the fixture.

[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An ultrasonic cleaning fixture, characterized in that, include: The fixture base and several sets of vertical and horizontal storage components mounted on the fixture base. The vertical storage assembly is used to place PCBs with inconsistent central circular hole sizes. It includes a vertical storage base, a storage step, and a vertical guide rod. The vertical storage base has a conical structure. The vertical storage base and the vertical guide rod are detachably mounted on the fixture base, so that the vertical storage base passes through the central circular hole of the PCB and the vertical guide rod passes through the circular hole on the side of the PCB to limit the PCB's position. This allows the PCBs to be stacked in order of decreasing central circular hole diameter, and adjacent PCBs do not overlap. The horizontal storage assembly is used to place PCBs with uniform central circular holes. It includes a fixed base, a first horizontal guide rod, a positioning groove, a second horizontal guide rod, a horizontal limiting rod, a pressure plate, a snap fastener, and a snap fastener seat. The fixed base is disposed on the fixture base. One end of the first horizontal guide rod, the second horizontal guide rod, and the horizontal limiting rod is connected to the fixed base, while the other end is suspended. This allows the first horizontal guide rod to pass through the central circular hole of the PCB, and the second horizontal guide rod to pass through the side circular hole of the PCB, thereby restricting the PCB. The first horizontal guide rod is provided with the positioning groove to position the PCB, and a gap is provided between two adjacent PCBs. The horizontal limiting rod is located below the first horizontal guide rod and contacts the bottom of the PCB. The pressure plate is movably connected to the fixed base, so that the bottom surface of the pressure plate contacts the top of the PCB, thereby cooperating with the horizontal limiting rod to restrict the vertical displacement of the PCB. The snap fastener is rotatably disposed on the top of the snap fastener seat to press the pressure plate tightly onto the fixed base.

2. The ultrasonic cleaning fixture according to claim 1, characterized in that, The fixture base is equipped with a handle.

3. The ultrasonic cleaning fixture according to claim 1, characterized in that, The fixture base is provided with multiple through holes.

4. An ultrasonic cleaning fixture according to claim 1, characterized in that, The outer peripheral wall of the vertical storage base is provided with multiple annular storage steps for supporting the PCB, and the diameter of the storage steps increases from top to bottom.

5. An ultrasonic cleaning fixture according to claim 1, characterized in that, The vertical storage base and the vertical guide rod are detachably connected to the clamp base by screws.

6. An ultrasonic cleaning fixture according to claim 1, characterized in that, The first horizontal guide rod and the second horizontal guide rod are detachably connected to the fixing base by screws.

7. An ultrasonic cleaning fixture according to claim 1, characterized in that, The diameter of the first horizontal guide rod is larger than the diameter of the second horizontal guide rod.

8. An ultrasonic cleaning fixture according to claim 1, characterized in that, The positioning groove has a V-shaped cross-section with an included angle of 90°.

9. An ultrasonic cleaning fixture according to claim 1, characterized in that, Each side of the fixing base is provided with a snap fastener.

10. An ultrasonic cleaning fixture according to claim 1, characterized in that, The snap fastener is rotatably connected to the snap fastener base via a rotating shaft.

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