Zinc-aluminum coating fluid accumulation inhibiting device for small screw head inner hole

Abstract

The utility model relates to plating equipment technical field discloses small screw head inner hole zinc aluminum coating effusion inhibiting device, including two plating tanks (1), two plating tanks (1) are connected together through bidirectional gear pump (2), and the solenoid valve (3) is set between plating tank (1) and bidirectional gear pump (2);Plating tank (1) is provided with plating basket (4), and the upper portion of plating basket (4) is provided with pivot (5), and pivot (5) is rotatably installed in pivot groove (6) of plating tank (1) inner wall;The ear hole (8) on the bottom lug (7) of plating basket (4) is connected through pull rope and the output shaft (11) of reversing motor (10);Reversing motor (10) is installed on the top surface of plating tank (1). The utility model discloses that the plating basket is swung by the positive and negative rotation motor, and the small screw is turned over in the plating basket, and will not be accumulated together, makes the effusion of small screw head inner hole fully discharge, inhibits the effusion accumulation in the inner hole, improves small screw plating quality.

Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, specifically a device for inhibiting the accumulation of zinc-aluminum coating liquid in the inner hole of a small screw head. Background Technology

[0002] The zinc-aluminum coating treatment on the screw surface improves the screw's corrosion resistance, wear resistance, and appearance quality. After coating, small screws are placed haphazardly in the coating basket and piled up together. The liquid in the inner hole of the head cannot be fully drained, and it is easy for residue to remain in the inner hole, resulting in poor coating of small screws.

[0003] The relevant reference CN210048871U discloses a novel plating basket, including a plating basket outer frame, an ultrasonic vibration motor on the upper outer wall of the plating basket outer frame, a dispersion cover connected to the bottom of the support rod, a dispersion gyroscope connected to the lower side of the dispersion cover via a gyroscope support rod, a spray nozzle connected to the conical bottom of the plating basket outer frame, a basket bottom filter screen on the top of the spray nozzle, and a plating basket conductive component on the upper side of the basket bottom filter screen. The electroplating solution spraying speed is more uniform, but it cannot fully drain the liquid accumulated in the inner hole of the small screw head. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a device for inhibiting the accumulation of liquid in the inner hole of the screw head zinc-aluminum coating and improving the coating quality of the screw.

[0005] To solve the above technical problems, this utility model provides a device for inhibiting the accumulation of zinc-aluminum coating liquid in the inner hole of a small screw head, including two plating tanks connected together by a bidirectional gear pump, and an electromagnetic valve installed between the plating tanks and the bidirectional gear pump; a plating basket is installed in the plating tank, and a rotating shaft is installed on the upper part of the plating basket, which is rotatably installed in a rotating shaft groove on the inner wall of the plating tank; an ear plate is installed at the bottom of the plating basket, and an ear hole is provided on the ear plate, which is connected to the output shaft of a forward and reverse motor through a pull rope; the forward and reverse motor is installed on the top surface of the plating tank.

[0006] By adopting the above technical solution, one plating tank is used and the other is on standby. After plating, the zinc-aluminum plating solution is transferred to the other plating tank by a bidirectional gear pump. The plating basket in the plating tank is pulled and swung by a forward and reverse motor. The small screws are turned over in the plating basket and will not pile up together. This allows the liquid in the inner hole of the small screw head to be fully discharged, inhibits the accumulation of liquid in the inner hole, and improves the plating quality of the small screws.

[0007] Preferably, an end cap is provided on the top surface of the coated basket.

[0008] By adopting the above technical solution, the end cap covers the plating basket, preventing small screws from falling out of the plating basket during the plating process and improving plating efficiency.

[0009] Preferably, the coating basket has through-holes around its entire body.

[0010] By adopting the above technical solution, flow holes are opened on the plating basket to allow the plating liquid to flow inside the plating basket, thereby realizing the plating work of small screws.

[0011] Preferably, the diameter of the flow passage is 0.3-0.5 times the diameter of the small screw head, and not less than 2mm.

[0012] By adopting the above technical solution, the ratio between the size of the flow hole and the diameter of the small screw head is reasonable, allowing the plating solution to flow freely in the plating basket, ensuring the plating effect of the small screw, and allowing the accumulated liquid to be smoothly discharged from the plating basket.

[0013] Preferably, the bottom of the coating basket is arc-shaped.

[0014] By adopting the above technical solution, the arc structure has no right-angled edges, and the parts will not accumulate in the corners, ensuring that all small screws can participate in the turning, improving the turning effect of small screws and improving the drainage effect of liquid accumulation in the inner hole.

[0015] Preferably, a transfer hole is provided on one side wall of the plating tank, and a filter screen is installed on the transfer hole.

[0016] By adopting the above technical solution, when the plating solution is transferred to another plating tank through the bidirectional gear pump, the filter screen intercepts particulate impurities through its pore structure, thus preventing particulate impurities from clogging the solenoid valve core and wearing the gear end face of the bidirectional gear pump.

[0017] Preferably, the bidirectional gear pump, solenoid valve, forward and reverse motor, and PLC controller are electrically connected.

[0018] By adopting the above technical solution, the device is controlled by a PLC controller to realize the automated operation of the plating basket movement and the conversion of plating solution in two plating tanks, thereby reducing labor intensity.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model has two plating tanks, one for use and one for backup. After plating, the zinc-aluminum plating solution is transferred to the other plating tank by a bidirectional gear pump. The plating basket in the plating tank is pulled and swung by a forward and reverse motor. The small screws are turned over in the plating basket and will not pile up together. This allows the liquid in the inner hole of the small screw head to be fully discharged, eliminating the accumulation of liquid in the inner hole and inhibiting the accumulation of liquid in the inner hole, thereby improving the plating quality of the small screws.

[0020] 2. The bottom of the plating basket of this utility model is arc-shaped. The arc structure has no right-angled edges, so the parts will not accumulate in the corners. This ensures that all small screws can participate in the turning, improves the turning effect of small screws, and improves the drainage effect of liquid accumulation in the inner hole.

[0021] 3. This utility model device is controlled by a PLC controller to realize the automated operation of the plating basket movement and the conversion of plating solution in two plating tanks, thereby reducing labor intensity. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the present utility model; Figure 2 This is the front view of the present utility model; Figure 3 This is a schematic diagram of the coating basket of this utility model; Figure 4 This is a schematic diagram of the plating tank of this utility model.

[0023] Drawing numbers: 1. Coating tank, 2. Bidirectional gear pump, 3. Solenoid valve, 4. Coating basket, 5. Rotary shaft, 6. Rotary shaft groove, 7. Ear plate, 8. Ear hole, 9. PLC controller, 10. Forward and reverse motor, 11. Output shaft, 12. End cover, 13. Flow hole, 14. Transmission hole, 15. Filter screen. Detailed Implementation

[0024] like Figure 1 , 2 As shown, the device for suppressing zinc-aluminum coating liquid accumulation in the inner hole of a small screw head includes two plating tanks 1, which are connected together by a bidirectional gear pump 2. A solenoid valve 3 is installed between the plating tanks 1 and the bidirectional gear pump 2. A plating basket 4 is installed in the plating tank 1, and a rotating shaft 5 is installed on the upper part of the plating basket 4. The rotating shaft 5 is rotatably installed in a rotating shaft groove 6 on the inner wall of the plating tank 1. An ear plate 7 is installed at the bottom of the plating basket 4, and an ear hole 8 is provided on the ear plate 7. A pull rope is attached to the ear hole 8, and the pull rope is connected to the output shaft 11 of a forward and reverse motor 10. The forward and reverse motor 10 is installed on the top surface of the plating tank 1. The bidirectional gear pump 2, the solenoid valve 3, the forward and reverse motor 10, and the PLC controller 9 are electrically connected. The device is controlled by the PLC controller 9 to realize the automated operation of the movement of the plating basket 4 and the transfer of plating liquid between the two plating tanks 1, reducing labor intensity. In this application, two plating tanks 1 are used and one is on standby. After plating, the zinc-aluminum plating solution is transferred to another plating tank 1 by a bidirectional gear pump 2. The plating basket 4 in the plating tank 1 is pulled and swung by a forward and reverse motor 10. The small screws are turned over in the plating basket 4 and will not pile up together, so that the liquid in the inner hole of the small screw head is fully discharged, eliminating the liquid accumulation in the inner hole, inhibiting the accumulation of liquid in the inner hole, and improving the plating quality of the small screws.

[0025] The top surface of the plating basket 4 is fitted with an end cap 12 via a hinge to prevent small screws from falling out of the plating basket 4 during the plating process, thereby improving plating efficiency.

[0026] like Figure 3As shown, the plating basket 4 has through-holes 13 around its perimeter to allow the plating solution to flow within it, thus enabling the plating of small screws. The diameter of the through-holes 13 is 0.3-0.5 times the diameter of the screw head, and not less than 2mm. The proportion between the size of the through-holes 13 and the screw head diameter is reasonable, allowing the plating solution to flow freely within the plating basket 4, ensuring the plating effect on the small screws, and allowing any accumulated liquid to drain smoothly from the plating basket 4.

[0027] The bottom of the plating basket 4 is arc-shaped, and the arc structure has no right-angle edges, so parts will not accumulate in the corners. This ensures that all small screws can participate in the turning process, improves the turning effect of small screws, and improves the drainage effect of liquid accumulation in the inner hole.

[0028] like Figure 4 As shown, a transfer hole 14 is provided on one side wall of the plating tank 1, and a filter screen 15 is installed on the transfer hole 14. When the plating liquid is transferred to another plating tank 1 through the bidirectional gear pump 2, the filter screen 15 intercepts particulate impurities through its porous structure, preventing particulate impurities from clogging the valve core of the solenoid valve 3 and wearing the gear end face of the bidirectional gear pump 2.

[0029] Two plating tanks are used, one as a backup. One plating tank 1, designated as Tank A, is filled with the prepared zinc-aluminum plating solution. The other plating tank 1, designated as Tank B, is left empty. Solenoid valve 3 is closed. A plating basket 4 containing small screws to be plating is placed in Tank A, with the rotating shaft 5 embedded in the rotating shaft groove 6. A pull rope 9 is connected to the output shaft 11 of the forward / reverse motor 10 in Tank A via the ear hole 8 on the ear plate 7. The plating basket 4 is left to stand in Tank A for 5-10 minutes to allow the surface of the small screws to fully contact the plating solution and form an initial coating. The forward / reverse motor 10 is started, causing the plating basket 4 to swing at a frequency of 10-15 seconds per cycle, promoting the penetration of the plating solution into the inner hole of the small screw head. The concentration of metal ions in the plating solution is periodically sampled and tested; the concentration is adjusted by adding raw materials or diluting. Once plating is complete, solenoid valve 3 is opened, and the bidirectional gear pump 2 is started to transfer the plating solution to Tank B. The filter screen on the transfer hole 14 intercepts impurities such as oxide scale and coating debris during the transfer process, preventing impurities from clogging the valve core of the solenoid valve 3 and wearing the gear end face of the bidirectional gear pump 2. During the transfer of the plating solution, the forward and reverse motor 10 on tank A continues to drive the plating basket 4 to swing. The centrifugal force generated by the swing causes the plating solution to form a vortex in the inner hole, breaking the liquid film tension. Combined with the fluidity of the plating solution, the small screws achieve a combined drainage effect of mechanical oscillation and rolling, along with fluid flushing, ensuring that the accumulated liquid in the inner hole of the small screw head is fully discharged, eliminating liquid accumulation in the inner hole, and improving the plating quality of the small screws. The concentration of the plating solution in tank B is adjusted, and the next batch of small screws is plating in tank B.

[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A device for inhibiting liquid accumulation in the zinc-aluminum coating inside the head of a small screw, characterized in that: It includes two plating tanks (1), which are connected together by a bidirectional gear pump (2). A solenoid valve (3) is provided between the plating tank (1) and the bidirectional gear pump (2). A plating basket (4) is provided in the plating tank (1), and a rotating shaft (5) is provided on the upper part of the plating basket (4). The rotating shaft (5) is rotatably installed in the rotating shaft groove (6) on the inner wall of the plating tank (1). An ear plate (7) is provided at the bottom of the plating basket (4), and an ear hole (8) is provided on the ear plate (7). The ear hole (8) is connected to the output shaft (11) of a forward and reverse motor (10) through a pull rope. The forward and reverse motor (10) is installed on the top surface of the plating tank (1).

2. The device for inhibiting liquid accumulation in the zinc-aluminum coating of the inner hole of a small screw head according to claim 1, characterized in that: The top surface of the plating basket (4) is provided with an end cap (12).

3. The device for inhibiting liquid accumulation in the zinc-aluminum coating of the inner hole of a small screw head according to claim 1, characterized in that: The coating basket (4) has through-holes (13) around its entire body.

4. The device for inhibiting liquid accumulation in the zinc-aluminum coating of the inner hole of a small screw head according to claim 3, characterized in that: The diameter of the flow passage (13) is 0.3-0.5 times the diameter of the small screw head, and not less than 2mm.

5. The device for inhibiting liquid accumulation in the zinc-aluminum coating of the inner hole of a small screw head according to claim 1, characterized in that: The bottom of the coating basket (4) is arc-shaped.

6. The device for inhibiting liquid accumulation in the zinc-aluminum coating of the inner hole of a small screw head according to claim 1, characterized in that: The plating tank (1) has a transfer hole (14) on one side wall, and a filter screen (15) is provided on the transfer hole (14).

7. The device for inhibiting liquid accumulation in the zinc-aluminum coating of the inner hole of a small screw head according to claim 1, characterized in that: The bidirectional gear pump (2), solenoid valve (3), forward and reverse motor (10), and PLC controller (9) are electrically connected.

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