Palladium plating clamp for armature assembly and palladium plating method thereof

Abstract

According to the palladium plating clamp for the armature assembly and the palladium plating method of the palladium plating clamp, a first cover plate is arranged below the armature assembly, the upper end face of the first cover plate is provided with a conductive gasket corresponding to a rectifying ring on the armature assembly in the vertical direction, a second cover plate is located on the upper end face of the armature assembly in a matched mode, and the first cover plate and the second cover plate are detachably and fixedly connected through a connecting assembly; the conductive gasket is fixedly connected with the plurality of rectification sheets on the rectification ring under tight contact, and the plurality of rectification sheets are electrically connected with the copper wire through the conductive gasket. The structure electrically connected with the rectifying ring in the armature assembly is optimized, the first cover plate and the second cover plate distributed at the lower end and the upper end of the armature assembly and the conductive coil arranged between the first cover plate and the rectifying ring are detachably and fixedly connected into a whole through the connecting assembly, and reliable contact of a conductive gasket and the rectifying ring in the electroplating process is ensured; the quality problem of the palladium plating layer caused by poor conductivity in the armature assembly electroplating process is solved, the palladium plating production qualification rate of the armature assembly is high, and the palladium plating quality is good.

Description

Technical Field

[0001] The invention belongs to the technical field of electroplating fixtures, and in particular relates to a palladium-plating fixture for an armature component and a palladium-plating method thereof. Background Art

[0002] The armature assembly is composed of armature laminations (soft magnetic alloy), rectifier segments (brass), coils and epoxy resin glue. The design requires palladium to be electroplated on the surface of the rectifier segments on 54 brass materials. Since the rectifier segments and the armature laminations are insulated from each other, local palladium electroplating of the rectifier segments on the armature assembly can only be achieved by clamping and conducting electricity in the groove between the outer circle φ58.7 of the rectifier segment and the R0.3 at the bonding surface; in production, φ0.2 copper wire is used to bind 360° along the groove R0.3 of the rectifier segment, and the tightening force of the binding copper wire is too large, causing the conductive copper wire to break due to excessive force; if the tightening force is too small, the conductivity of each rectifier segment is uneven, and even some rectifier segments are not conductive, and it is impossible to ensure that the copper wire fits tightly on the surface of the 54 rectifier segments, resulting in unreliable conductivity of each rectifier segment. During the electroplating process, due to the unreliable conductivity of the rectifier segment, the coating often peels and falls off due to poor bonding strength. Therefore, a fixture must be designed to solve the palladium plating quality problem caused by poor conductivity during the electroplating process of the armature assembly. Summary of the invention

[0003] The technical problem solved by the present invention is as follows: a palladium plating fixture for an armature assembly and a palladium plating method thereof are provided. By optimizing the structure electrically connected to a rectifier ring in the armature assembly, a connecting assembly is used to detachably fix cover plate 1 and cover plate 2 distributed at the lower end and the upper end of the armature assembly and a conductive coil arranged between the cover plate 1 and the rectifier ring as a whole, thereby ensuring reliable contact between the conductive gasket and the rectifier ring during the electroplating process, solving the problem of palladium plating quality caused by poor conductivity during the electroplating process of the armature assembly, and the armature assembly has a high palladium plating production qualification rate, good palladium plating quality, and high use value.

[0004] The technical solution adopted by the present invention is: a palladium-plated fixture for an armature assembly, comprising a cover plate one and a cover plate two, wherein the cover plate one is arranged below the armature assembly, and the upper end surface of the cover plate one is provided with a conductive gasket corresponding to the upper and lower positions of a rectifier ring on the armature assembly, the upper end surface of the armature assembly is adapted to be positioned with the cover plate two, and the cover plate one and the cover plate two are detachably fixedly connected by a connecting assembly, so as to realize the fixed connection of the conductive gasket and a plurality of rectifier segments on the rectifier ring in close contact, and the plurality of rectifier segments are electrically connected to the copper wire through the conductive gasket.

[0005] Among them, the connecting assembly includes connecting bolts and locking nuts, and the cover plate one and cover plate two are both provided with center holes in the middle of the plate surface, and the connecting bolts pass through the cover plate one, the conductive washer, the armature assembly and the cover plate two in sequence from bottom to top and are adapted to be connected with the locking nuts above the cover plate two, thereby realizing reliable fixed connection of the cover plate one, the conductive washer, the armature assembly and the cover plate two.

[0006] Furthermore, a positioning boss is formed on the end surface of the second cover plate facing the armature assembly, and the positioning boss is adapted to fit in the step hole of the armature assembly.

[0007] Furthermore, the cover plate 1, the cover plate 2, the connecting bolts and the locking nuts are all made of nylon material.

[0008] Furthermore, a plurality of weight-reducing holes are evenly distributed on the circumference of the plate surface of the cover plate 1 and the cover plate 2.

[0009] Furthermore, an ear plate is formed on the outer circumferential wall of the conductive gasket, and a hook for copper wire to pass through and bind is formed on the ear plate.

[0010] Furthermore, the conductive gasket is made of brass with a thickness of 0.3 mm.

[0011] A method for plating palladium for an armature assembly comprises the following steps:

[0012] 1) Assembly: Place the conductive gasket on the rectifier ring side of the armature assembly and correspond to the position of the rectifier ring; place cover plate 1 on the lower end surface of the conductive gasket, and place cover plate 2 on the plane of the armature assembly away from the rectifier ring side;

[0013] 2) Connection: Pass the connecting bolts through the cover plate 1, the conductive washer, the armature assembly and the cover plate 2 from bottom to top, fine-tune the position of the conductive washer, visually align the conductive washer with the lower end surface of the rectifier ring, and then fit the locking nut with the threaded section of the connecting bolt and lock it. At this time, the conductive washer is close to the rectifier plates on the rectifier ring, and the ear plate on the outer circumferential wall of the conductive washer extends out of the armature assembly;

[0014] 3) Electrical connection: Use φ0.3mm copper wire to tie into the hook on the ear plate on the outer circumferential wall of the conductive gasket;

[0015] 4) After the copper wire is energized, use a megohmmeter to check the conductivity between the conductive copper wire and several rectifier segments. After the conductivity check is qualified, complete the installation of the armature assembly and the fixture, and enter the palladium electroplating process.

[0016] The advantages of the present invention compared with the prior art are:

[0017] 1. This technical solution optimizes the structure electrically connected to the rectifier ring in the armature assembly, and uses a connecting assembly to detachably connect the cover plate 1 and the cover plate 2 distributed at the lower end and the upper end of the armature assembly, and the conductive coil provided between the cover plate 1 and the rectifier ring, so as to ensure reliable contact between the conductive gasket and the rectifier ring during the electroplating process, and solve the palladium plating quality problem caused by poor conductivity during the electroplating process of the armature assembly;

[0018] 2. This technical solution provides reliable and stable contact between the conductive gasket and the rectifier ring in the armature assembly, and the electrical connection is achieved by reliably binding the ear plate on the outer circumferential wall of the conductive gasket with the copper wire, thereby reducing the difficulty of the traditional electrical connection structure and improving the electrical connection efficiency;

[0019] 3. This technical solution has a simple structure and novel design. It optimizes the electrical connection method with the armature assembly, improves the reliability and stability of the electrical connection with the rectifier in the armature assembly, has a high qualified rate of palladium plating production of the armature assembly, has good palladium plating quality, and has a high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the conductive gasket of the present invention;

[0022] Figure 3 This is a structural front view of the backing plate 2 of the present invention;

[0023] Figure 4 It is a left side view of the structure of the backing plate 2 of the present invention;

[0024] Figure 5 It is a structural schematic diagram of a pad 1 of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention Figure 1-5 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations. The elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0028] Palladium-plated fixtures for armature assemblies, such as Figure 1-5 As shown, it includes a cover plate 1 and a cover plate 2, the cover plate 1 is arranged below the armature assembly 3, and the upper end surface of the cover plate 1 is provided with a conductive gasket 4 corresponding to the upper and lower positions of the rectifier ring 3-1 on the armature assembly 3, the upper end surface of the armature assembly 3 is adapted to be positioned with the cover plate 2, and the cover plate 1 and the cover plate 2 are detachably connected by a connecting assembly, so that the conductive gasket 4 is connected to a plurality of rectifier segments on the rectifier ring 3-1 in close contact, and the plurality of rectifier segments 3-1 are connected by conductive The washer 4 is electrically connected to the copper wire; in the above structure, by optimizing the structure electrically connected to the rectifying ring 3-1 in the armature assembly 3, a connecting assembly is used to detachably connect the cover plate 1 and the cover plate 2 2 distributed at the lower end and the upper end of the armature assembly 3 and the conductive coil 4 arranged between the cover plate 1 and the rectifying ring 3-1 as a whole, thereby ensuring reliable contact between the conductive washer 4 and the rectifying ring 3-1 during the electroplating process, and solving the palladium plating quality problem caused by poor conductivity during the electroplating process of the armature assembly 3;

[0029] The specific structure of the connecting component is as follows: the connecting component includes a connecting bolt 5 and a locking nut 6, and the cover plate 1 and the cover plate 2 are both provided with a center hole 7 in the middle of the plate surface, and the connecting bolt 5 passes through the cover plate 1, the conductive washer 4, the armature assembly 3 and the cover plate 2 from bottom to top in sequence and is adapted to be connected with the locking nut 6 above the cover plate 2, so as to realize a reliable fixed connection between the cover plate 1, the conductive washer 4, the armature assembly 3 and the cover plate 2; wherein, a positioning boss 8 is provided on the end surface of the cover plate 2 facing the armature assembly 3, and the positioning boss 8 is adapted to be in the step hole of the armature assembly 3.

[0030] The cover plate 1, the cover plate 2, the connecting bolts 5 and the locking nuts 6 are all made of nylon material; specifically, the cover plate 1 and the cover plate 2 are evenly distributed on the circumference of the plate surface with a plurality of weight-reducing holes 11. Specifically, the outer circumferential wall of the conductive gasket 4 is provided with an ear plate 9, and the ear plate 9 is provided with a hook 10 for the copper wire to pass through and bind; specifically, the conductive gasket 4 is made of brass with a thickness of 0.3 mm; in the above structure, under the reliable and stable contact between the conductive gasket 4 and the rectifying ring 3-1 in the armature assembly 3, the ear plate 9 provided on the outer circumferential wall of the conductive gasket 4 and the copper wire are reliably bound and then electrically connected, thereby reducing the difficulty of the traditional electrical connection structure and improving the electrical connection efficiency;

[0031] A method for plating palladium for an armature assembly comprises the following steps:

[0032] 1) Assembly: Place the conductive gasket 4 on the side of the rectifying ring 3-1 of the armature assembly 3 and correspond to the position of the rectifying ring 3-1; place the cover plate 1 on the lower end surface of the conductive gasket 4, and place the cover plate 2 on the plane of the armature assembly 3 away from the rectifying ring 3-1;

[0033] 2) Connection: Pass the connecting bolt 5 through the cover plate 1, the conductive washer 4, the armature assembly 3 and the cover plate 2 2 from bottom to top, fine-tune the position of the conductive washer 4, visually align the conductive washer 4 with the lower end surface of the rectifier ring 3-1, and then make the locking nut 6 fit and connect with the threaded section of the connecting bolt 5 and lock it. At this time, the conductive washer 4 is close to the several rectifier plates on the rectifier ring 3-1, and the ear plate 9 on the outer circumferential wall of the conductive washer 4 extends out of the armature assembly 3;

[0034] 3) Electrical connection: Use φ0.3mm copper wire to tie into the hook 10 on the ear plate 9 on the outer circumferential wall of the conductive gasket 4;

[0035] 4) After the copper wire is energized, use a megohmmeter to check the conductivity between the conductive copper wire and several rectifier segments. After the conductivity check is qualified, the installation of the armature assembly 3 and the fixture is completed, and the palladium electroplating process can be entered.

[0036] The designed palladium plating fixture is used in the palladium plating production of a certain type of armature component. Five batches of 45 armature components 3 were completed, with a pass rate of more than 92%, effectively solving the palladium plating quality problem caused by poor conductivity during the electroplating process of the armature component 3.

[0037] The technical solution has a simple structure and a novel design, optimizes the electrical connection method with the armature assembly 3, improves the reliability and stability of the electrical connection with the rectifier segments in the armature assembly 3, has a high qualified rate of palladium plating production of the armature assembly 3, has good palladium plating quality, and has a high use value.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A palladium-plated fixture for an armature assembly, characterized in that: The invention comprises a cover plate 1 (1) and a cover plate 2 (2), wherein the cover plate 1 (1) is arranged below an armature assembly (3), and a conductive washer (4) corresponding to the upper and lower positions of a rectifier ring (3-1) on the armature assembly (3) is arranged on the upper end surface of the cover plate 1 (1), and the cover plate 2 (2) is adapted to be positioned on the upper end surface of the armature assembly (3), and the cover plate 1 (1) and the cover plate 2 (2) are detachably fixedly connected via a connecting assembly, so that the conductive washer (4) is fixedly connected to a plurality of rectifier segments on the rectifier ring (3-1) in close contact, and the plurality of rectifier segments (3-1) are electrically connected to the copper wire via the conductive washer (4).

2. The palladium-plated fixture for armature assembly according to claim 1, characterized in that: The connection assembly comprises a connection bolt (5) and a locking nut (6); a central hole (7) is formed in the middle of the plate surface of the cover plate 1 (1) and the cover plate 2 (2); and the connection bolt (5) passes through the cover plate 1 (1), the conductive washer (4), the armature assembly (3) and the cover plate 2 (2) in sequence from bottom to top and is adaptively connected to the locking nut (6) above the cover plate 2 (2), thereby realizing reliable fixed connection of the cover plate 1 (1), the conductive washer (4), the armature assembly (3) and the cover plate 2 (2).

3. The palladium-plated fixture for armature assembly according to claim 2, characterized in that: A positioning boss (8) is formed on the end surface of the second cover plate (2) facing the armature assembly (3), and the positioning boss (8) is adapted to fit in the step hole of the armature assembly (3).

4. The palladium-plated fixture for an armature assembly according to claim 3, characterized in that: The cover plate 1 (1), the cover plate 2 (2), the connecting bolts (5) and the locking nuts (6) are all made of nylon material.

5. The palladium-plated fixture for an armature assembly according to claim 4, characterized in that: A plurality of weight-reducing holes (11) are evenly distributed on the circumference of the plate surface of the cover plate 1 (1) and the cover plate 2 (2).

6. The palladium-plated fixture for an armature assembly according to any one of claims 1 to 5, characterized in that: The conductive gasket (4) is provided with an ear plate (9) on its outer circumferential wall, and the ear plate (9) is provided with a hook (10) for passing the copper wire through for binding.

7. The palladium-plated fixture for an armature assembly according to claim 6, characterized in that: The conductive gasket (4) is made of brass with a thickness of 0.3 mm.

8. A palladium plating method for an armature assembly, characterized in that The following steps are involved: 1) Assembly: Place the conductive gasket (4) on the side of the rectifying ring (3-1) of the armature assembly (3) and in a position corresponding to the rectifying ring (3-1); place the cover plate 1 (1) on the lower end surface of the conductive gasket (4), and place the cover plate 2 (2) on the plane of the armature assembly (3) away from the rectifying ring (3-1); 2) Connection: Insert the connecting bolt (5) through the cover plate 1 (1), the conductive washer (4), the armature assembly (3) and the cover plate 2 (2) in sequence from bottom to top, fine-tune the position of the conductive washer (4), visually align the conductive washer (4) with the lower end surface of the rectifier ring (3-1), and then fit the locking nut (6) with the threaded section of the connecting bolt (5) and lock it. At this time, the conductive washer (4) is tightly attached to the plurality of rectifier plates on the rectifier ring (3-1), and the ear plate (9) on the outer circumferential wall of the conductive washer (4) extends out of the armature assembly (3); 3) Electrical connection: Use a φ0.3 mm copper wire to tie it into the hook (10) on the ear plate (9) on the outer circumferential wall of the conductive gasket (4); 4) After the copper wire is energized, use a megohmmeter to check the conductivity between the copper wire and several rectifier segments. After the conductivity check is qualified, the armature assembly (3) and the fixture are installed and the palladium electroplating process can be started.

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