Sealed combined air knife for tin plating

Abstract

The utility model provides a sealed combined air knife for tin plating, which belongs to the technical field of air knives and comprises an air knife upper die and an air knife lower die positioned below the air knife upper die. The sealing surfaces are respectively arranged at the bottom of the air knife upper die and the top of the air knife lower die; the air inlet is formed in the outer side wall of the air knife lower die; the air cavities are respectively formed in the central position of the bottom of the air knife upper die and the central position of the top of the air knife lower die; the air outlet is formed in the position, close to one side of the air cavity, of the top of the air knife lower die; the sealing rubber strip is arranged at the bottom of the air knife upper die and is close to the outer side of the air cavity; the sealing groove is formed in the position, close to the outer side of the air cavity, of the top of the air knife lower die; according to the utility model, a layer of sealing structure is formed under the coating of high-vacuum silicone grease through the sealing surfaces which are precisely matched on the air knife upper die and the air knife lower die, so that the sealing performance of the combined joint of the air knife upper die and the air knife lower die can be ensured, and gas leakage is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of air knife technology, specifically relating to a sealed combination air knife for tin coating. Background Technology

[0002] During the tinning process, the wire harnesses that need to be tinned may contain dust and moisture. These are usually removed by blowing them off with an air knife. Air knives have numerous applications in the industrial field, such as blowing away water and dust, removing impurities, dust, residual liquid, and moisture from the product surface and outer packaging.

[0003] Existing air knives have poor sealing performance after assembly. Since high-pressure gas flows inside the air knife, this high-pressure gas is prone to leaking along the assembly joints, affecting the gas flow and purging intensity.

[0004] Therefore, a sealed combination air knife for tin coating is proposed. Summary of the Invention

[0005] This utility model provides a sealed combination air knife for tin coating, the purpose of which is to solve the problems mentioned above.

[0006] This utility model provides a sealing combination air knife for tin coating, including an upper air knife mold and a lower air knife mold located below it; sealing surfaces respectively provided at the bottom of the upper air knife mold and the top of the lower air knife mold; an air inlet opened on the outer wall of the lower air knife mold; air cavities respectively opened at the center of the bottom of the upper air knife mold and the center of the top of the lower air knife mold; an air outlet opened at the top of the lower air knife mold near the air cavity; a sealing rubber strip provided at the bottom of the upper air knife mold near the outer side of the air cavity; a sealing groove opened at the top of the lower air knife mold near the outer side of the air cavity; a high vacuum silicone grease anti-overflow groove opened at the bottom of the upper air knife mold near the air cavity and the sealing rubber strip; a high vacuum silicone grease anti-overflow protrusion provided at the top of the lower air knife mold near the air cavity and the sealing groove; a guide post fixed at the top of the lower air knife mold near the outer side of the sealing groove; and a guide hole opened at the bottom of the upper air knife mold near the outer side of the sealing rubber strip.

[0007] Furthermore, the top of the lower mold of the air knife is provided with a screw hole, the top of the upper mold of the air knife is provided with a storage hole, and the bottom of the storage hole is provided with a mounting hole.

[0008] Furthermore, the sealing surfaces on the upper and lower molds of the air knife are horizontal and precisely matched.

[0009] By adopting the above technical solution, it is ensured that the upper mold and lower mold of the air knife fit precisely during installation, thus guaranteeing their sealing performance.

[0010] Furthermore, both the air inlet and the air outlet are connected to the air chamber;

[0011] By adopting the above technical solution, it can be ensured that the gas enters the air chamber through the air inlet and is discharged through the air outlet, thus ensuring the smooth flow of air.

[0012] Furthermore, the centers of the guide posts and guide holes are on the same axis, and four guide posts and four guide holes are symmetrically arranged.

[0013] By adopting the above technical solution, and using the guidance of guide pillars and guide holes, the upper and lower molds of the air knife can be precisely aligned, avoiding misalignment and facilitating convenient and accurate subsequent installation.

[0014] Furthermore, the sealing rubber strip and the sealing groove are matched and fit together;

[0015] By adopting the above technical solution, the sealing rubber strip is precisely embedded in the sealing groove, thereby further sealing the sealing surface.

[0016] Furthermore, the high-vacuum silicone grease anti-overflow groove and the high-vacuum silicone grease anti-overflow protrusion are matched and fit together;

[0017] By adopting the above technical solution, the high vacuum grease anti-overflow protrusion can be precisely embedded inside the high vacuum grease anti-overflow groove, which can achieve a sealing effect. In addition, the protruding high vacuum grease anti-overflow protrusion can prevent the high vacuum grease on the sealing surface from entering the inner cavity under compression.

[0018] Furthermore, the upper and lower air knife dies are fixedly connected by screws, with the screws passing through mounting holes and threaded into the screw holes;

[0019] By adopting the above technical solution, the upper mold and the lower mold of the air knife are combined to form an air knife.

[0020] The beneficial effects of this utility model are as follows:

[0021] This invention utilizes precisely fitted sealing surfaces on the upper and lower molds of the air knife, forming a sealed structure under the application of high-vacuum silicone grease. This ensures the sealing performance at the connection between the upper and lower molds, preventing gas leakage. A protective structure formed by the high-vacuum silicone grease anti-overflow protrusions prevents the grease from being squeezed into the air cavity and outlet during the connection of the upper and lower molds, thus avoiding grease residue. This ensures sufficient air output without requiring cleaning of the air cavity and outlet. Furthermore, a secondary seal is formed by the cooperation of the sealing rubber strip and sealing groove, further improving sealing performance and guaranteeing the air output and blowing intensity of the air knife.

[0022] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the lower mold structure of the air knife according to an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the upper mold structure of the air knife according to an embodiment of the present utility model;

[0027] Figure 4 This is an embodiment of the present utility model. Figure 2 Enlarged diagram of point A in the diagram;

[0028] Reference numerals: 1. Upper mold of air knife; 2. Lower mold of air knife; 3. Sealing surface; 4. Air inlet; 5. Air cavity; 6. Air outlet; 7. Guide post; 8. Guide hole; 9. Sealing rubber strip; 10. Sealing groove; 11. High vacuum silicone grease anti-overflow groove; 12. High vacuum silicone grease anti-overflow protrusion; 13. Screw hole; 14. Mounting hole; 15. Storage hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Reference Figure 1-4This utility model provides a sealing combination air knife for tin coating, including an upper air knife mold 1 and a lower air knife mold 2. The upper air knife mold 1 is located above the lower air knife mold 2, and both the bottom of the upper air knife mold 1 and the top of the lower air knife mold 2 are provided with sealing surfaces 3. The sealing surfaces 3 on the upper air knife mold 1 and the lower air knife mold 2 are horizontal and precisely matched to ensure that the upper air knife mold 1 and the lower air knife mold 2 are precisely fitted during installation, ensuring their sealing performance. Both the upper air knife mold 1 and the lower air knife mold 2 are machined using a high-precision five-axis machining center to ensure the flatness and surface roughness of the sealing surfaces 3, thereby ensuring the sealing performance of the sealing surfaces 3. An air inlet 4 is provided on the outer side wall of the lower air knife mold 2, and the top of the lower air knife mold 2 and the air knife... The bottom of the upper mold 1 is provided with air chambers 5. The top of the lower mold 2 of the air knife is provided with an air outlet 6 near the air chamber 5. Both the air inlet 4 and the air outlet 6 are connected to the air chamber 5, which ensures that the gas enters the air chamber 5 through the air inlet 4 and is discharged through the air outlet 6, thus ensuring airflow. The bottom of the upper mold 1 of the air knife is provided with a high-vacuum silicone grease anti-overflow groove 11 and a sealing rubber strip 9 near the outer side of the air chamber 5. The high-vacuum silicone grease anti-overflow groove 11 is located inside the sealing rubber strip 9. The bottom of the lower mold 2 of the air knife is provided with a high-vacuum silicone grease anti-overflow protrusion 12 and a sealing groove 10 near the outer side of the air chamber 5. The high-vacuum silicone grease anti-overflow protrusion 12 is located inside the sealing groove 10. The rubber strip 9 and the sealing groove 10 are matched and fitted together, ensuring that the sealing rubber strip 9 is precisely embedded in the sealing groove 10, thereby further sealing the sealing surface 3. The high vacuum silicone grease anti-overflow groove 11 and the high vacuum silicone grease anti-overflow protrusion 12 are matched and fitted together, allowing the high vacuum silicone grease anti-overflow protrusion 12 to be precisely embedded inside the high vacuum silicone grease anti-overflow groove 11, which not only seals the surface but also prevents the high vacuum silicone grease on the sealing surface 3 from entering the air cavity 5 under compression. A guide post 7 is provided at the top of the upper mold 1 of the air knife near the outer side of the sealing groove 10, and a guide hole 8 is provided at the bottom of the lower mold 2 of the air knife near the outer side of the sealing rubber strip 9. The centers of the guide pillars 7 and guide holes 8 are on the same axis, and four guide pillars 7 and four guide holes 8 are symmetrically arranged. With the guidance of the guide pillars 7 and guide holes 8, the upper mold 1 and the lower mold 2 of the air knife can be accurately connected to avoid misalignment, which facilitates the convenience and accuracy of subsequent installation. A screw hole 13 is opened on the top of the lower mold 2 near the guide hole 8. A storage hole 15 is opened on the top of the upper mold 1 of the air knife. An installation hole 14 is opened at the center of the bottom of the storage hole 15. The upper mold 1 and the lower mold 2 of the air knife are fixedly connected by screws. The screws pass through the installation hole 14 and are screwed into the screw hole 13, so that the upper mold 1 and the lower mold 2 of the air knife can be combined to form an air knife.

[0031] The specific implementation method is as follows: During assembly, high-vacuum silicone grease is evenly applied to the sealing surfaces 3 of both the upper mold 1 and the lower mold 2 of the air knife. The guide post 7 on the lower mold 2 is inserted into the guide hole 8 on the upper mold 1. Under the guidance and limitation of the guide hole 8, the upper mold 1 and the lower mold 2 of the air knife are precisely joined together. During the joining process, the sealing rubber strip 9 is gradually embedded into the sealing groove 10 and deforms to fill the interior of the sealing groove 10. The high-vacuum silicone grease anti-overflow protrusion 12 is gradually inserted into the high-vacuum silicone grease anti-overflow. The high-vacuum silicone grease anti-overflow protrusion 12 forms a protective barrier, which can prevent the high-vacuum silicone grease on the sealing surface 3 from being squeezed into the air cavity 5 and the air outlet 6 when the upper mold 1 and the lower mold 2 of the air knife are connected. This avoids the presence of high-vacuum silicone grease residue in the air cavity 5 and the air outlet 6, ensuring the air output while eliminating the need to clean the air cavity 5 and the air outlet 6. After the upper mold 1 and the lower mold 2 of the air knife are connected, the screw is screwed into the screw hole 13 after passing through the mounting hole 14 to achieve the combination and fixation of the upper mold 1 and the lower mold 2 of the air knife.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sealed air knife for tin coating, characterized in that: It includes an upper air knife mold (1) and a lower air knife mold (2) located below it; Sealing surfaces (3) are respectively provided at the bottom of the upper mold (1) and the top of the lower mold (2) of the air knife; An air inlet (4) is opened on the outer side wall of the lower mold (2) of the air knife; Air cavities (5) are respectively opened at the bottom center of the upper air knife mold (1) and the top center of the lower air knife mold (2); An air outlet (6) is opened at the top of the lower mold (2) of the air knife, near the air cavity (5); A sealing rubber strip (9) is provided at the bottom of the upper mold (1) of the air knife near the outer side of the air cavity (5); A sealing groove (10) is opened at the top of the lower mold (2) of the air knife, near the outer side of the air cavity (5); A high-vacuum silicone grease anti-overflow groove (11) is formed at the bottom of the upper mold (1) of the air knife, near the air cavity (5) and the sealing rubber strip (9); A high-vacuum silicone grease anti-overflow protrusion (12) is provided at the top of the lower mold (2) of the air knife, near the position between the air cavity (5) and the sealing groove (10); A guide post (7) is fixed at the top of the lower mold of the air knife (2) near the outer side of the sealing groove (10); A guide hole (8) is opened at the bottom of the upper mold (1) of the air knife, near the outer side of the sealing rubber strip (9).

2. The sealing combination air knife for tin coating according to claim 1, characterized in that: The top of the lower mold (2) of the air knife is provided with a screw hole (13), the top of the upper mold (1) of the air knife is provided with a storage hole (15), and the bottom of the storage hole (15) is provided with a mounting hole (14).

3. The sealing combination air knife for tin coating according to claim 1, characterized in that: The sealing surfaces (3) on the upper mold (1) and lower mold (2) of the air knife are horizontal and precisely matched.

4. A sealing combination air knife for tin coating according to claim 1, characterized in that: The air inlet (4) and air outlet (6) are both connected to the air chamber (5).

5. A sealing combination air knife for tin coating according to claim 1, characterized in that: The centers of the guide post (7) and the guide hole (8) are on the same axis, and four guide posts (7) and four guide holes (8) are symmetrically arranged.

6. A sealing combination air knife for tin coating according to claim 1, characterized in that: The sealing rubber strip (9) and the sealing groove (10) are matched and fit together.

7. A sealing combination air knife for tin coating according to claim 1, characterized in that: The high vacuum silicone grease anti-overflow groove (11) and the high vacuum silicone grease anti-overflow protrusion (12) are matched and fit together.

8. A sealing combination air knife for tin coating according to claim 2, characterized in that: The upper mold (1) and the lower mold (2) of the air knife are fixedly connected by screws, which pass through the mounting hole (14) and are threaded into the screw hole (13).

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