A hanger for cleaning and electroplating a gyroscope float and a method of using the hanger

Abstract

The present invention relates to a hanger for cleaning and electroplating a gyroscope float and a method for using the hanger, which is characterized in that: a hanging head is composed of an inverted V-shaped hook head and a straight hanging arm, and the end of the V-shaped hook head is provided with an inner folding flange with a threaded hole; the hanging head is fixedly connected to a beam suspension in a cleaning or electroplating device through the V-shaped hook head; a hinge shaft is inserted into a pin hole A on the hanging head and a pin hole B on a center rod, and a stop pin inserted into a limit groove A on the hanging head and a limit groove B on the center rod is used to form a fixed or rotating connection between the two at different use stages; a part pressure plate and a part tray are fixed on the center rod along an upper and lower sleeve, and a part installation space is formed between the two; a clamping device on the part pressure plate corresponds to an outward supporting arm of the part tray one by one, and a workpiece installation position is formed between each clamping device and the corresponding outward supporting arm, and the workpiece is clamped by two clamping claws of the clamping device and a sawtooth groove on the outward supporting arm. The present invention is easy to adjust and has good applicability.

Description

Technical Field

[0001] The invention belongs to the technical field of gyroscope float processing, and in particular relates to a hanger for cleaning and electroplating a gyroscope float and a use method thereof. Background Art

[0002] The dimensional accuracy and behavioral accuracy of the outer circle and inner hole of the gyroscope float are relatively high. Because the float needs to be alkaline etched in NaOH solution and exposed in HNO3 solution before electroplating. During the electroplating process, it needs to be suspended in the electroplating tank for electroplating. After electroplating, it needs to be cleaned in sodium carbonate solution. Therefore, whether it is the cleaning before electroplating, electroplating, or cleaning after electroplating, it is necessary to use a hanger to clamp the parts, and the surface of the parts must not be scratched. The position of the hanger clamping cannot be the outer circle and the inner hole, and too much clamping force will cause deformation of the parts, while too little clamping force will cause poor conductivity of the guide column, low current density, and poor electroplating effect. In addition, during the electroplating and cleaning process, the solubility of the solution around the parts will gradually decrease. If the parts cannot be moved during the electroplating and cleaning process, it will lead to poor cleaning effect and poor electroplating consistency. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a hanger for cleaning and electroplating a gyroscope float which is easy to adjust and has good applicability, and a method of using the hanger.

[0004] One of the above-mentioned purposes of the present invention is achieved by the following technical solution:

[0005] A hanger for cleaning and electroplating a gyroscope float, characterized in that it comprises a hanging head, a center rod, a parts tray, and a parts pressure plate;

[0006] The hanging head is composed of an inverted V-shaped hook head and a straight hanging arm connected to one side of the inverted V-shaped hook head. An inward folding flange is provided at the end of the V-shaped hook head away from the straight hanging arm, and a threaded hole is processed on the inward folding flange. The hanging head is connected to the crossbeam in the cleaning or electroplating equipment through the V-shaped hook head, and is fixed to the corresponding crossbeam by tightening the locking screw in the threaded hole on the inward folding flange.

[0007] A pin hole A and a limit slot A are arranged on the upper and lower edges of the straight hanging arm of the hanging head, and a pin hole B and a limit slot B are arranged on the upper and lower edges of the upper end of the center rod; a hinge shaft is inserted into the pin hole A and the pin hole B, and a stop pin inserted into the limit slot A and the limit slot B is used to form a fixed connection or a relatively rotatable connection between the hanging head and the center rod at different use stages;

[0008] The part pressure plate and the part tray are fixed on the center rod along the upper and lower sleeves, and a part installation space is formed between the two; the part pressure plate is composed of a center sleeve part, an outward pressure arm connected to the outer circle of the center sleeve part in a uniform radial pattern, and a clamping device installed at the end of each outward pressure arm, and the clamping device has two pressure claws that can be extended to both sides at the same time; the part tray is composed of a center sleeve part, an outward support arm connected to the outer circle of the center sleeve part in a uniform radial pattern, the number of the outward support arms is consistent with the number of the above-mentioned outward pressure arms, and the outward support arms adopt a support bar structure with serrations on the upper end; the clamping device on the part pressure plate corresponds to the outward support arm of the part tray one by one, and a workpiece installation position is formed between each clamping device and the corresponding outward support arm, and the clamping of the workpiece is achieved by the two pressure claws of the clamping device and the serrated groove on the outward support arm.

[0009] Further: the limit groove A is an L-shaped groove set obliquely and inverted, and the limit groove B is composed of an L-shaped groove section set obliquely and inverted and an arc-shaped groove section connecting one end of the L-shaped groove section, and the arc-shaped groove section is centered on the axis of the pin shaft hole B; when the stop pin is inserted into the upper groove end of the two limit grooves, the suspension head forms a fixed connection with the center rod; when the stop pin is inserted into the lower groove end of the limit groove A and is in the arc-shaped groove section of the limit groove B, the suspension head forms a relatively rotatable connection with the center rod.

[0010] Further: the clamping device is composed of a square slot box with openings on both sides, a gear shaft and two rack-like pressure claws; a gear socket is provided at the top of the square slot box, and an axial hole is provided at the bottom; the gear shaft extends into the square slot box from the gear socket, and the lower end of the gear shaft can be rotatably inserted into the square slot and the axial hole, and a driving handle is installed at the upper end of the gear shaft; the two rack-like pressure claws are placed in the square slot box, and form a tooth meshing with the inner and outer sides of the gear shaft.

[0011] Furthermore: radial threaded holes are arranged on the central sleeve parts of the parts pressure plate and the parts tray, and the parts pressure plate and the parts tray are fixedly connected to the center rod by installing locking screws.

[0012] The second object of the present invention is achieved by the following technical solution:

[0013] A method for using the above-mentioned hanger for cleaning and electroplating a gyroscope float is characterized by comprising the following steps:

[0014] Step 1. According to the number of parts to be electroplated, select the number of part trays and part pressure plates installed on the center rod, install the part trays and part pressure plates on the center rod, adjust the distance between each set of part trays and part pressure plates so that the distance between the two is slightly larger than the height of the parts, and tighten the part pressure plate and part tray with locking screws respectively.

[0015] Step 2: According to the size of the clamped parts, rotate the gear shaft to extend the two rack-type clamping claws from both sides, and adjust the clamping range of the clamping device to reach an appropriate value;

[0016] Step 3: After supporting the parts one by one on the outward supporting arms of the parts tray, loosen the locking screws of the fixed parts pressure plate, lower the parts pressure plate, and make the two rack-type pressure claws press tightly on the upper end surface of the parts to fix the parts;

[0017] Step 4: Place the stop pin between the suspension head and the center rod at the upper ends of the two limit grooves to lock the suspension head and the center rod;

[0018] Step 4. Hang the hanger on the beam above the cleaning tank, fasten the hanging head and the beam with the locking screw installed on the hanging head, and place the stop pin in the lower groove end of the limit groove A and the arc-shaped groove section of the limit groove B; during the cleaning process, shake the center rod continuously to remove the air pockets of the parts and update the solution concentration around the parts to enhance the cleaning effect;

[0019] Step 5. After cleaning the float, place the stop pin between the suspension head and the center rod to the upper groove end of the two limit grooves, loosen the locking screw between the suspension head and the crossbeam, place the hanger on the crossbeam of the electroplating tank, fasten the suspension head and the crossbeam with the locking screw, and place the stop pin in the lower groove end of the limit groove A and the arc-shaped groove section of the limit groove B; then turn on the power to start electroplating, and constantly shake the center rod during the electroplating process to eliminate the air pockets of the parts while updating the solution concentration around the parts, enhancing the electroplating effect, and ensuring the consistency of the electroplating;

[0020] Step 6. After the electroplating is completed, turn off the power supply, place the stop pin between the suspension head and the center rod to the upper end of the limit groove, loosen the locking screw between the suspension head and the crossbeam, and place the hanger in the subsequent weak alkali neutralization and cleaning process. During the cleaning process, constantly shake the center rod to remove the air pockets of the parts and update the solution concentration around the parts to enhance the cleaning effect;

[0021] Step 7: After cleaning, remove the float from the hanger and perform pickling and deplating on the hanger to ensure the conductivity of the hanger.

[0022] The present invention has the following advantages and positive effects:

[0023] 1. The hanging head of the present invention has a V-shaped cone surface, and the contact point with the electroplated anode rod is two-point contact, which has better conductive effect than the traditional single-point contact; the hanging head can be installed with a locking screw, and the locking screw can press the hanging head and the electrode tightly, even when the hanger is shaken, it can also ensure that the hanging head and the electrode are in close and firm contact.

[0024] 2. The other end of the suspension head of the present invention is connected to the center rod through a hinge shaft, and the two states of locking and rotation can be realized through the stop pin and the limit groove. The locked state is conducive to turnover and is not easy to bump into parts and operators. In the rotating state, it can be shaken to stir the solution around the parts, so as to achieve constant solution concentration and ensure consistency during cleaning and electroplating. The parts can also be shaken to remove the reacted or stored gas, so that the cleaning liquid or electroplating liquid can fully contact with each structure of the parts, especially the groove type and the right-angle structure have outstanding advantages in removing the trapped gas.

[0025] 3. The number of part trays and part pressure plates of the present invention can be freely installed, and the distance between the part tray and the pressure plate can be adjusted according to the size and height of the parts, so that the parts can be fixed with appropriate clamping force. In addition, it is also suitable for various types of float parts.

[0026] 4. The clamping device of the present invention adopts the meshing structure of the gear shaft and two rack-type pressing claws, which can evenly clamp both sides of the float every time, reducing the damage to the parts caused by the hanger clamping. In addition, the clamping range of the clamping device can be adjusted by rotating the gear shaft and the rack-type pressing claws, which is suitable for electroplating and cleaning of various types of floats during electroplating. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the hanger used for cleaning and electroplating the gyroscope float of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the suspension head of the present invention;

[0029] Figure 3 It is a partial enlarged view of the upper end of the center rod of the present invention;

[0030] Figure 4 It is a structural schematic diagram of a part pressure plate of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the parts tray of the present invention;

[0032] Figure 6 It is a schematic structural diagram of the suspension head and the center rod of the present invention in a relatively rotatable position;

[0033] Figure 7 It is a schematic diagram of the working principle of the clamping device in the part pressure plate of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the present invention in which the parts are clamped and fixed between the parts tray and the parts pressure plate. DETAILED DESCRIPTION

[0035] The structure of the present invention is further described below with reference to the accompanying drawings and by way of examples. It should be noted that the present examples are descriptive rather than restrictive.

[0036] A hanger for cleaning and plating gyro floats, see Figure 1-8 , mainly including a suspension head 1, a center rod 3, a parts tray 5, a parts pressure plate 4 and other components.

[0037] The hanging head is composed of an inverted V-shaped hook head 1.1 and a straight hanging arm 1.2 connected to one side of the inverted V-shaped hook head. An inner folding flange 1.6 is provided at the end of the V-shaped hook head away from the straight hanging arm, and a threaded hole 1.5 is processed on the inner folding flange. A V-shaped cone is formed on the inner side of the inverted V-shaped hook head. By utilizing the deadweight of the hanger and the parts, it can be in close contact with the circular electroplating anode rod, and the contact point is two-point contact, which has a better conductive effect than the traditional single-point contact. In addition, a locking screw 6 is installed in the threaded hole of the inner folding flange. The locking screw 6 can press the hanging head and the electrode tightly, and even when the hanger is shaken, it can ensure that the hanging head 1 is in close and firm contact with the electrode.

[0038] A pin hole A1.3 and a limit groove A1.4 are arranged on the upper and lower edges of the straight hanging arm of the suspension head, and a pin hole B3.1 and a limit groove B3.2 are arranged on the upper end of the center rod, wherein the limit groove A is an L-shaped groove arranged obliquely and invertedly, and the limit groove B is composed of an L-shaped groove section arranged obliquely and invertedly and an arc-shaped groove section connecting one end of the L-shaped groove section, and the arc-shaped groove section is centered on the axis of the pin hole B.

[0039] The suspension head is connected to the center rod through a hinge shaft 7 inserted into the pin shaft hole A and the pin shaft hole B. After the stop pin 2 is installed in the limit groove A and the limit groove B, two states can be realized.

[0040] The first state is when the stop pin is at the upper end of the two limit grooves. At this time, the suspension head and the center rod are stuck by the stop pin and cannot rotate around the hinge axis. In the process of rotating parts, the inability to rotate is conducive to turnover.

[0041] The second state is when the stop pin is at the lower groove end of the limit groove A and in the arc groove section of the limit groove B. At this time, the suspension head and the stop pin can realize rotation around the hinge axis, and the rotation angle is 0-20°, which is suitable for cleaning and electroplating processes. By shaking the center rod around the hinge axis, the solution around the part can be stirred to achieve a constant solution concentration and ensure consistency during the cleaning and electroplating processes; the reacted or stored gas can be removed by shaking the parts, so that the cleaning liquid or electroplating liquid can fully contact with each structure of the part, especially the groove type and the right-angle structure have outstanding advantages in removing trapped gas.

[0042] The center rod can be equipped with a parts tray and a parts pressure plate as needed. The parts tray, the parts pressure plate and the center rod are assembled together through clearance fit. The cylinders on the parts tray and the parts pressure plate that match the center rod are equipped with locking screws. The parts tray, the parts pressure plate and the middle rod can be locked by the locking screws. The distance between the parts tray and the pressure plate can be adjusted according to the size and height of the parts.

[0043] The part pressure plate is composed of a central sleeve portion 4.1, an outward pressure arm 4.2 connected to the outer circle of the central sleeve portion in a uniform radial shape, and a clamping device installed at the end of each outward pressure arm. The number of outward pressure arms in the attached figure is 10. The clamping device is composed of a square slot box 4.3 with openings on both sides, a gear shaft 4.4, and two rack-type pressure claws 4.5. A gear jack is provided at the top of the square slot box, and an axial hole is provided at the bottom. The gear shaft extends into the square slot box from the gear jack, and the lower end of the gear shaft can be rotatably inserted into the axial hole of the square slot, and a driving handle is installed at the upper end of the gear shaft. The two rack-type pressure claws are placed in the square slot box and form a tooth mesh with the inner and outer sides of the gear shaft. When the gear shaft rotates, the two rack-type pressure claws are synchronously extended or retracted from both sides of the square slot box. Each clamping can evenly clamp the two sides of the float, reducing the damage to the parts caused by the clamping of the hanger. In addition, the clamping range of the clamping device can be adjusted by rotating the gear shaft and the rack-type clamping claw, which is suitable for electroplating and cleaning of various types of floats.

[0044] The parts tray is composed of a central sleeve part 5.1 and an outward-extending support arm 5.2 evenly distributed radially connected to the outer circle of the central sleeve part. The number of the outward-extending support arms is the same as the number of the outward-extending pressure arms. The outward-extending support arm adopts a support bar structure with saw teeth 5.2.1 at the upper end, and two of the saw teeth can support the float, and cooperate with the parts pressure plate to achieve non-damaging clamping of the float. In addition, there are fewer hanger points during the electroplating process, which does not affect the beauty and precision of the float.

[0045] A method for using a gyroscope float cleaning and electroplating hanger:

[0046] Step 1. According to the number of parts to be plated, select the number of parts trays and parts pressure plates installed on the center rod, for example, refer to Figure 1 Each parts tray and parts pressure plate can grab 10 parts. Put the parts tray and parts pressure plate on the center rod, adjust the distance between each set of parts trays and parts pressure plate, make the distance between the two slightly larger than the height of the parts (that is, the distance between the two and the height of the parts are in a clearance fit), so that the parts can be easily placed between the parts tray and the parts pressure plate, and tighten the parts pressure plate and parts tray with locking screws respectively.

[0047] Step 2: According to the size of the clamped part 8, the two rack-type clamping claws are extended from both sides by rotating the gear shaft, and the clamping range of the clamping device is adjusted to reach an appropriate value.

[0048] Step 3. After supporting the parts one by one on the extended supporting arms of the parts tray, loosen the locking screws that fix the parts pressure plate, lower the parts pressure plate, and press the two rack-type pressure claws on the upper end surface of the parts to fix the parts. At this time, the two rack-type pressure claws undergo slight elastic deformation, and a moderate clamping force is applied to the parts to ensure the clamping effect of the parts. In addition, after the two rack-type pressure claws undergo slight deformation, they are clamped with the gear shaft to achieve a self-locking effect.

[0049] Step 4: Place the stop pin between the suspension head and the center rod at the upper end of the two limit grooves, lock the suspension head and the center rod, and prohibit rotation around the hinge axis to avoid damaging parts or operators during the placement of the turnover hanger.

[0050] Step 4. Hang the hanger on the beam above the cleaning tank, fasten the hanging head and the beam with the locking screws installed on the hanging head, and place the stop pin at the lower end of the limit groove A and the arc-shaped groove section of the limit groove B; during the cleaning process, constantly shake the center rod to remove air pockets in the parts and update the solution concentration around the parts to enhance the cleaning effect.

[0051] Step 5. After cleaning the float, place the stop pin between the suspension head and the center rod to the upper end of the two limit grooves, loosen the locking screws between the suspension head and the crossbeam, place the hanger on the crossbeam of the electroplating tank, use the locking screws to fasten the suspension head and the crossbeam, and place the stop pin at the lower end of the limit groove A and the arc-shaped groove section of the limit groove B; then turn on the power to start electroplating, and constantly shake the center rod during the electroplating process to eliminate air pockets in the parts while updating the solution concentration around the parts to enhance the electroplating effect and ensure the consistency of the electroplating.

[0052] Step 6. After the electroplating is completed, turn off the power supply, place the stop pin between the suspension head and the center rod to the upper end of the limit groove, loosen the locking screw between the suspension head and the crossbeam, and place the hanger in the subsequent weak alkali neutralization and cleaning process. During the cleaning process, constantly shake the center rod to remove the air pockets of the parts while updating the solution concentration around the parts to enhance the cleaning effect.

[0053] Step 7: After cleaning, remove the float from the hanger and perform pickling and deplating on the hanger to ensure the conductivity of the hanger.

[0054] The invention can be used in the field of electroplating surface treatment in the aerospace, chemical, water conservancy, electric power and other industries, especially in the field of cleaning and electroplating of gyroscope floats, and has a very broad prospect for promotion and application.

[0055] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A hanger for cleaning and electroplating a gyroscope float, characterized in that: Including suspension head, center rod, parts tray, parts pressure plate; The hanging head is composed of an inverted V-shaped hook head and a straight hanging arm connected to one side of the inverted V-shaped hook head. An inward folding flange is provided at the end of the V-shaped hook head away from the straight hanging arm, and a threaded hole is processed on the inward folding flange. The hanging head is connected to the crossbeam in the cleaning or electroplating equipment through the V-shaped hook head, and is fixed to the corresponding crossbeam by tightening the locking screw in the threaded hole on the inward folding flange. A pin hole A and a limit slot A are arranged on the upper and lower edges of the straight hanging arm of the hanging head, and a pin hole B and a limit slot B are arranged on the upper and lower edges of the upper end of the center rod; a hinge shaft is inserted into the pin hole A and the pin hole B, and a stop pin inserted into the limit slot A and the limit slot B is used to form a fixed connection or a relatively rotatable connection between the hanging head and the center rod at different use stages; The part pressure plate and the part tray are fixed on the center rod along the upper and lower sleeves, and a part installation space is formed between the two; the part pressure plate is composed of a center sleeve part, an outward pressure arm connected to the outer circle of the center sleeve part in a uniform radial pattern, and a clamping device installed at the end of each outward pressure arm, and the clamping device has two pressure claws that can be extended to both sides at the same time; the part tray is composed of a center sleeve part, an outward support arm connected to the outer circle of the center sleeve part in a uniform radial pattern, the number of the outward support arms is consistent with the number of the above-mentioned outward pressure arms, and the outward support arms adopt a support bar structure with serrations on the upper end; the clamping device on the part pressure plate corresponds to the outward support arm of the part tray one by one, and a workpiece installation position is formed between each clamping device and the corresponding outward support arm, and the clamping of the workpiece is achieved by the two pressure claws of the clamping device and the serrated groove on the outward support arm.

2. The hanger for cleaning and electroplating a gyroscope float according to claim 1, characterized in that: The limit groove A is an L-shaped groove set obliquely and inverted, and the limit groove B is composed of an L-shaped groove section set obliquely and inverted and an arc-shaped groove section connecting one end of the L-shaped groove section, and the arc-shaped groove section is centered on the axis of the pin shaft hole B; when the stop pin is inserted into the upper groove end of the two limit grooves, the suspension head and the center rod form a fixed connection; when the stop pin is inserted into the lower groove end of the limit groove A and is in the arc-shaped groove section of the limit groove B, the suspension head and the center rod form a relatively rotatable connection.

3. The hanger for cleaning and electroplating a gyroscope float according to claim 2, characterized in that: The clamping device consists of a square slot box with openings on both sides, a gear shaft and two rack-like pressing claws; a gear insertion hole is provided on the top of the square slot box, and an axial hole is provided on the bottom; the gear shaft extends into the square slot box from the gear insertion hole, and the lower end of the gear shaft can be rotatably inserted into the square slot and the axial hole, and a driving handle is installed on the upper end of the gear shaft; the two rack-like pressing claws are placed in the square slot box and form tooth meshing with the inner and outer sides of the gear shaft.

4. The hanger for cleaning and electroplating a gyroscope float according to claim 3, characterized in that: Radial threaded holes are arranged on the central sleeve parts of the parts pressure plate and the parts tray. The parts pressure plate and the parts tray are fixedly connected to the central rod by installing locking screws.

5. A method for using the hanger for cleaning and electroplating a gyroscope float according to claim 4, characterized in that: The steps include: Step 1. According to the number of parts to be plated, select the number of parts trays and parts pressure plates installed on the center rod, install the parts trays and parts pressure plates on the center rod, adjust the distance between each set of parts trays and parts pressure plates so that the distance between the two is slightly larger than the height of the parts, and tighten the parts pressure plates and parts trays with locking screws respectively; Step 2: According to the size of the clamped parts, rotate the gear shaft to extend the two rack-type clamping claws from both sides, and adjust the clamping range of the clamping device to reach an appropriate value; Step 3: After supporting the parts one by one on the outward supporting arms of the parts tray, loosen the locking screws of the fixed parts pressure plate, lower the parts pressure plate, and make the two rack-type pressure claws press tightly on the upper end surface of the parts to fix the parts; Step 4: Place the stop pin between the suspension head and the center rod at the upper ends of the two limit grooves to lock the suspension head and the center rod; Step 4. Hang the hanger on the beam above the cleaning tank, fasten the hanging head and the beam with the locking screw installed on the hanging head, and place the stop pin in the lower groove end of the limit groove A and the arc-shaped groove section of the limit groove B; during the cleaning process, shake the center rod continuously to remove the air pockets of the parts and update the solution concentration around the parts to enhance the cleaning effect; Step 5. After cleaning the float, place the stop pin between the suspension head and the center rod to the upper groove end of the two limit grooves, loosen the locking screw between the suspension head and the crossbeam, place the hanger on the crossbeam of the electroplating tank, fasten the suspension head and the crossbeam with the locking screw, and place the stop pin in the lower groove end of the limit groove A and the arc-shaped groove section of the limit groove B; then turn on the power to start electroplating, and constantly shake the center rod during the electroplating process to eliminate the air pockets of the parts while updating the solution concentration around the parts, enhancing the electroplating effect, and ensuring the consistency of the electroplating; Step 6. After the electroplating is completed, turn off the power supply, place the stop pin between the suspension head and the center rod to the upper end of the limit groove, loosen the locking screw between the suspension head and the crossbeam, and place the hanger in the subsequent weak alkali neutralization and cleaning process. During the cleaning process, constantly shake the center rod to remove the air pockets of the parts and update the solution concentration around the parts to enhance the cleaning effect; Step 7: After cleaning, remove the float from the hanger and perform pickling and deplating on the hanger to ensure the conductivity of the hanger.

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