T-shaped tube galvanizing nickel tooling

Abstract

This utility model relates to a T-shaped tube zinc-nickel plating fixture, including a frame, a cathode beam, a lower beam, an upper beam, an upper anode beam, and a lower anode beam. Anode connecting pieces are electrically connected to the upper and lower anode beams respectively. The cathode beam has a central support frame, which is detachably connected to a central fixing sleeve. A cathode ring is mounted on the central fixing sleeve, fitting against the outer wall of the T-shaped tube. The upper anode beam has an upper anode rod, and the lower anode beam has a lower anode rod. An internal vent pipe is located at the top of the lower anode rod. The frame has an external vent pipe connected to the internal vent pipe. The frame also has an external siphon pipe, and an internal siphon pipe is located inside the upper anode rod. This utility model achieves drainage through the blind hole at the top of the T-shaped tube via the internal and external siphon pipes, allowing the tank liquid to be emptied. The internal and external vent pipes also ensure that gas is discharged from the blind hole at the bottom of the T-shaped tube when it is immersed in the tank liquid, facilitating full contact between the inner wall of the blind hole and the tank liquid.

Description

Technical Field

[0001] This utility model relates to zinc-nickel plating fixtures, and more particularly to a zinc-nickel plating fixture for a T-shaped tube. Background Technology

[0002] T-shaped tubes for aerospace applications require zinc-nickel electroplating in harsh working environments. Because the T-shaped tube has two blind holes, gas tends to accumulate in the lower blind hole during electroplating, making it difficult for the bottom blind hole to fully contact the plating solution. After electroplating, the plating solution is difficult to drain from the top blind hole, and uneven current distribution on the side surface of the top blind hole results in an uneven plating layer. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a tooling for zinc-nickel plating of T-shaped tubes.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a T-shaped tube zinc-nickel plating fixture, including a frame, a cathode beam horizontally arranged in the middle of the frame, a lower beam horizontally arranged in the lower part of the frame, an upper beam horizontally arranged in the upper part of the frame, an upper anode beam horizontally arranged on the frame above the upper beam, and a lower anode beam horizontally arranged below the lower beam. The upper and lower anode beams are both insulated from the frame. The cathode beam is insulated from the frame. A cathode connecting piece is insulated from one side wall of the frame, and an anode connecting piece is insulated from the other side wall of the frame. The anode connecting pieces are electrically connected to the upper and lower anode beams respectively. A central support frame is provided on the cathode beam. A central support frame is detachably connected to a central fixing sleeve. A cathode ring is provided on the central fixing sleeve, and the cathode ring fits against the outer wall of the T-shaped tube. An upper anode rod is provided on the upper anode crossbeam, extending into a blind hole at the top of the T-shaped tube. A lower anode rod is provided on the lower anode crossbeam, extending into a blind hole at the bottom of the T-shaped tube. An internal exhaust pipe is provided at the top of the lower anode rod, extending to the end of the blind hole at the bottom of the T-shaped tube. An external exhaust pipe is provided on the frame, communicating with the internal exhaust pipe. The top of the external exhaust pipe extends to the top of the frame. An external siphon is provided on the frame. An internal siphon is provided inside the upper anode rod, extending to the end of the blind hole at the top of the T-shaped tube. The internal siphon communicates with the external siphon, and the bottom opening of the external siphon is lower than the bottom opening of the internal siphon.

[0005] As a further improvement to this design, the top of the external siphon tube is connected to a siphon exhaust pipe, and the siphon exhaust pipe is equipped with an exhaust diaphragm one-way valve, the exhaust direction of which faces the top opening of the siphon exhaust pipe.

[0006] As a further improvement to this design, a shielding sleeve is fitted onto the non-nickel-plated surface of the T-shaped tube. The shielding sleeve is formed by two semi-circular insulating plates hinged together. The openings of the insulating plates are provided with spring latches for closing and locking the two insulating plates. The openings at both ends of the shielding sleeve are provided with closures to seal the gap between the shielding sleeve and the T-shaped tube.

[0007] As a further improvement to this design, the side tubes on both sides of the T-shaped tube are fitted with insulating mesh sleeves, and an auxiliary anode rod is electrically connected to the upper anode beam, with the auxiliary anode rod extending to the T-shaped tube where plating is easily missed.

[0008] As a further improvement to this design, a stabilizing sleeve is fitted on the outer wall of the bottom of the T-shaped tube, and a clamping block is connected to the stabilizing sleeve to clamp the lower anode rod.

[0009] As a further improvement to this design, the bottom end of the internal exhaust pipe is provided with a stabilizing block whose outer wall fits against the inner wall of the blind hole at the bottom of the T-shaped pipe, and the stabilizing block is provided with a through hole that runs through the stabilizing block from top to bottom.

[0010] As a further improvement to this design, a leakage pipe is provided at the bottom of the external exhaust pipe, and a leakage diaphragm check valve is provided on the leakage pipe, with the leakage direction of the leakage diaphragm check valve being downward.

[0011] The beneficial effects of this utility model are: this utility model realizes drainage through the blind hole at the top of the T-shaped tube by means of the inner siphon and the outer siphon, which can empty the tank liquid; and realizes that when the T-shaped tube is immersed in the tank liquid by means of the inner vent pipe and the outer vent pipe, the gas in the blind hole at the bottom of the T-shaped tube is discharged, which facilitates the full contact between the inner wall of the blind hole at the bottom of the T-shaped tube and the tank liquid. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention after the T-shaped tube is installed.

[0014] Figure 2 This is a schematic diagram of the front structure of this utility model after the T-shaped tube is installed.

[0015] Figure 3 This is a schematic diagram of the cross-section along the axis of the T-shaped tube after the T-shaped tube is installed.

[0016] In the diagram: 1. Frame, 2. Upper anode beam, 3. Upper anode rod, 4. Spring latch, 5. Cathode connection piece, 6. Intermediate fixing sleeve, 7. Cathode beam, 8. Shielding sleeve, 9. Stabilizing sleeve, 10. Lower anode rod, 11. Lower anode beam, 12. Leakage pipe, 13. External siphon pipe, 14. Mesh sleeve, 15. Anode connection piece, 16. Lower beam, 17. Upper beam, 18. Middle support frame, 19. Cathode ring, 20. Siphon exhaust pipe, 21. Exhaust diaphragm check valve, 22. Auxiliary anode rod, 23. Clamping block, 24. Leakage diaphragm check valve, 25. Internal siphon pipe, 26. Internal exhaust pipe, 27. External exhaust pipe, 28. Enclosure, 29. Stabilizing block, 30. Through hole, 31. Lower stabilizing sleeve. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0018] Example: A T-shaped tube zinc-nickel plating fixture includes a frame 1, a cathode beam 7 horizontally disposed in the middle of the frame 1, a lower beam 16 horizontally disposed in the lower part of the frame 1, an upper beam 17 horizontally disposed in the upper part of the frame 1, an upper anode beam 2 horizontally disposed above the upper beam 17 on the frame 1, and a lower anode beam 11 horizontally disposed below the lower beam 16. The upper anode beam 2 and the lower anode beam 11 are both insulated from the frame 1. The cathode beam 7 is insulated from the frame 1. A cathode connecting piece 5 is insulated from one side wall of the frame 1, and an anode connecting piece 15 is insulated from the other side wall of the frame 1. The anode connecting piece 15 is electrically connected to the upper anode beam 2 and the lower anode beam 11, respectively. A central support frame 18 is provided on the cathode beam 7, and the central support frame 18 is detachable. A middle fixing sleeve 6 is connected, and a cathode ring 19 is provided on the middle fixing sleeve 6. The cathode ring 19 fits against the outer wall of the T-shaped tube. An upper anode rod 3 is provided on the upper anode crossbeam 2, which extends into the blind hole at the top of the T-shaped tube. A lower anode rod 10 is provided on the lower anode crossbeam 11, which extends into the blind hole at the bottom of the T-shaped tube. An inner exhaust pipe 26 is provided at the top of the lower anode rod 10, which extends to the end of the blind hole at the bottom of the T-shaped tube. An outer exhaust pipe 27 is provided on the frame 1, which communicates with the inner exhaust pipe 26. The top of the outer exhaust pipe 27 extends to the top of the frame 1. An outer siphon pipe 13 is provided on the frame 1. An inner siphon pipe 25 is provided inside the upper anode rod 3, which extends to the end of the blind hole at the top of the T-shaped tube. The inner siphon pipe 25 communicates with the outer siphon pipe 13. The bottom opening of the outer siphon pipe 13 is lower than the bottom opening of the inner siphon pipe 25.

[0019] The above-mentioned drainage through the inner siphon pipe 25 and the outer siphon pipe 13 is achieved by draining the blind hole at the top of the T-shaped pipe, which can empty the tank liquid; the inner vent pipe 26 and the outer vent pipe 27 are used to ensure that the gas in the blind hole at the bottom of the T-shaped pipe is discharged when the T-shaped pipe is immersed in the tank liquid, so as to facilitate the full contact between the inner wall of the blind hole at the bottom of the T-shaped pipe and the tank liquid.

[0020] To facilitate the filling of the inner siphon tube 25 and the outer siphon tube 13 with the tank liquid during immersion, thus creating a siphon, the top end of the outer siphon tube 13 is connected to a siphon exhaust pipe 20. The siphon exhaust pipe 20 is equipped with an exhaust diaphragm check valve 21, and the exhaust direction of the exhaust diaphragm check valve 21 faces the top opening of the siphon exhaust pipe 20.

[0021] To facilitate the shielding of the non-electroplated areas on the surface of the T-tube, a shielding sleeve 8 is fitted onto the non-nickel-plated surface of the T-tube. The shielding sleeve 8 is formed by two semi-circular insulating plates hinged together. The openings of the insulating plates are provided with spring latches 4 for closing and locking the two insulating plates. The two ends of the shielding sleeve 8 are provided with closures 28, which close the gap between the shielding sleeve 8 and the T-tube.

[0022] To reduce the current density on the outer wall of the T-shaped tube and prevent the plating layer from being too thick, an insulating mesh sleeve 14 is provided on both sides of the T-shaped tube. To ensure the plating thickness and quality in areas of the T-shaped tube that are prone to plating omissions, an auxiliary anode rod 22 is electrically connected to the upper anode beam 2, and the auxiliary anode rod 22 extends to the T-shaped tube at the locations where plating omissions are likely to occur.

[0023] To ensure the stability of the lower anode rod 10, a stabilizing sleeve 9 is fitted on the outer wall of the bottom of the T-shaped tube, and a clamping block 23 is connected to the stabilizing sleeve 9 to clamp the lower anode rod 10.

[0024] To improve the stability of the internal exhaust pipe 26, a stabilizing block 29 is provided at the bottom of the internal exhaust pipe 26, the outer wall of which fits against the inner wall of the blind hole at the bottom of the T-shaped pipe. The stabilizing block 29 is provided with a through hole 30 that runs through the stabilizing block 29 from top to bottom, facilitating the immersion of the tank liquid.

[0025] To facilitate the discharge of liquid from the inner vent pipe 26 and the outer vent pipe 27, a leakage pipe 12 is provided at the bottom of the outer vent pipe 27. A leakage diaphragm check valve 24 is provided on the leakage pipe 12, and the leakage direction of the leakage diaphragm check valve 24 is downward.

[0026] To further stabilize the T-shaped tube, a lower stabilizing sleeve 31 is provided on the lower crossbeam 16, and the lower stabilizing sleeve 31 is fitted on the outer wall of the T-shaped tube.

[0027] 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 based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tooling for zinc-nickel plating of T-shaped tubes, characterized in that, The system includes a frame, a cathode beam horizontally positioned in the middle of the frame, a lower beam horizontally positioned in the lower part of the frame, an upper beam horizontally positioned in the upper part of the frame, an upper anode beam horizontally positioned above the upper beam on the frame, and a lower anode beam horizontally positioned below the lower beam. The upper and lower anode beams are insulated from the frame. The cathode beam is also insulated from the frame. A cathode connecting piece is insulated from one side wall of the frame, and an anode connecting piece is insulated from the other side wall of the frame. The anode connecting pieces are electrically connected to the upper and lower anode beams, respectively. A central support frame is provided on the cathode beam, and a central fixing element is detachably connected to the central support frame. The set includes a cathode ring on the middle fixed sleeve, which fits against the outer wall of the T-shaped tube. An upper anode rod extending into a blind hole at the top of the T-shaped tube is provided on the upper anode crossbeam. A lower anode rod extending into a blind hole at the bottom of the T-shaped tube is provided on the lower anode crossbeam. An internal exhaust pipe extending to the end of the blind hole at the bottom of the T-shaped tube is provided at the top of the lower anode rod. An external exhaust pipe is provided on the frame, communicating with the internal exhaust pipe. The top of the external exhaust pipe extends to the top of the frame. An external siphon is provided on the frame. An internal siphon extending to the end of the blind hole at the top of the T-shaped tube is provided inside the upper anode rod, communicating with the external siphon. The bottom opening of the external siphon is lower than the bottom opening of the internal siphon.

2. The T-shaped tube zinc-nickel plating fixture according to claim 1, characterized in that, The top of the external siphon pipe is connected to a siphon exhaust pipe, and the siphon exhaust pipe is equipped with an exhaust diaphragm one-way valve, the exhaust direction of which faces the top opening of the siphon exhaust pipe.

3. The T-shaped tube zinc-nickel plating fixture according to claim 1, characterized in that, The non-nickel-plated surface of the T-shaped tube is fitted with a shielding sleeve, which is made of two semi-circular insulating plates hinged together. The opening of the insulating plates is provided with a spring buckle for closing and locking the two insulating plates. The openings at both ends of the shielding sleeve are provided with closures to close the gap between the shielding sleeve and the T-shaped tube.

4. The T-shaped tube zinc-nickel plating fixture according to claim 3, characterized in that, The T-shaped tube is fitted with insulating mesh sleeves on both sides, and an auxiliary anode rod is electrically connected to the upper anode beam, extending to the T-shaped tube at the position where plating is easily missed.

5. The T-shaped tube zinc-nickel plating fixture according to claim 1, characterized in that, A stabilizing sleeve is fitted on the outer wall of the bottom of the T-shaped tube, and a clamping block is connected to the stabilizing sleeve to clamp the lower anode rod.

6. The T-shaped tube zinc-nickel plating fixture according to claim 1, characterized in that, The bottom end of the internal exhaust pipe is provided with a stabilizing block whose outer wall is attached to the inner wall of the blind hole at the bottom of the T-shaped pipe, and the stabilizing block is provided with a through hole that runs through the stabilizing block from top to bottom.

7. The T-shaped tube zinc-nickel plating fixture according to claim 6, characterized in that, The bottom end of the external exhaust pipe is provided with a leakage pipe, and a leakage diaphragm check valve is provided on the leakage pipe. The leakage direction of the leakage diaphragm check valve is downward.

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