An electroless silver plating device for a contact support

Abstract

The present invention relates to the technical field of material plating, and in particular to a contact support chemical silver plating device, comprising a bracket, a liquid cylinder and a silver plating mechanism. The liquid cylinder is mounted on the bracket, and is filled with silver liquid; the silver plating mechanism comprises a plurality of blades and a plurality of plating cylinders, wherein the plurality of blades can revolve and rotate in a vertical direction, and the blades and the plating cylinders are arranged in a one-to-one correspondence, and the plating cylinders can revolve and rotate in a vertical direction along with the blades arranged in correspondence therewith, and can rotate around their own axes. The contact support chemical silver plating device of the present invention is provided with a silver plating mechanism, and the rotation of the blades will stir the silver liquid in the liquid cylinder, and cause the plating cylinder rotatably mounted on the blades to rotate, and as the blades rotate, the silver liquid in the liquid cylinder will be subjected to the action of centrifugal force, so that the accumulated and blocked contact support surfaces can also be evenly plated, thereby achieving batch plating while improving the efficiency and quality of plating.

Description

Technical Field

[0001] The invention relates to the technical field of material plating, in particular to a contact support chemical silver plating device. Background Art

[0002] As a key component in electrical equipment, the quality of the surface plating of the contact support directly affects the electrical conductivity, wear resistance and corrosion resistance of the electrical equipment. Silver has excellent electrical conductivity and antioxidant properties, and can maintain stable electrical contact under high current and complex environments. Therefore, silver plating of the contact support is an important means to improve its performance. Among them, chemical silver plating is a commonly used surface treatment technology. It uses chemical reduction or electrochemical deposition methods to form a uniform and dense silver layer on the surface of the substrate, which can not only improve the appearance and texture of the substrate, but also enhance its corrosion resistance. In addition, chemical silver plating is simple to operate and low in cost, so it is widely used when plating contact supports.

[0003] However, when plating contact supports, in order to improve the efficiency of contact support plating, traditional silver plating equipment usually places multiple contact supports in a plating cylinder for batch processing. However, this will make it impossible for the multiple contact supports gathered together to be uniformly plated, resulting in inconsistent plating thickness on the surface of the contact supports, which not only affects the appearance, but may also reduce the conductivity and wear resistance of the plating, affecting the plating quality. Summary of the Invention

[0004] The present invention provides a contact support chemical silver plating device to solve the problem that when using existing silver plating equipment for silver plating, multiple contact supports are easily piled up and blocked with each other during the plating process, resulting in the plating solution being unable to evenly contact the surface of each contact support, and the plating solution is insufficiently fluid and cannot fully penetrate between the piled contact supports, thereby causing uneven plating thickness and inconsistent surface roughness.

[0005] The present invention provides a contact support chemical silver plating device adopts the following technical solution: a contact support chemical silver plating device, comprising a bracket, a liquid holding cylinder and a silver plating mechanism; the liquid holding cylinder is arranged in a vertical direction and installed on the bracket, and the liquid holding cylinder is filled with silver liquid; the silver plating mechanism can move up and down relative to the bracket so that the silver plating mechanism can be immersed in or out of the liquid holding cylinder; the silver plating mechanism comprises a plurality of blades and a plurality of plating cylinders, the blades are arranged in a vertical direction, the plurality of blades are evenly distributed around the vertical direction and can revolve around the vertical direction, the blades and the plating cylinders are arranged in a one-to-one correspondence, the plating cylinders are arranged in a vertical direction and installed on the blades corresponding thereto, a plurality of contact supports to be plated are placed in the plating cylinders, and a plurality of through holes are evenly distributed on the plating cylinders; the plating cylinders can revolve around the vertical direction along with the blades corresponding thereto and can rotate around their own axes.

[0006] Furthermore, it also includes a cover plate, which is installed on the bracket and is located above the liquid cylinder. The cover plate can move up and down on the bracket, and the cover plate can block the upper end of the liquid cylinder when it moves downward. Multiple blades are evenly distributed around the vertical direction at the lower end of the cover plate and can revolve around the vertical direction. The silver plating mechanism is rotatably installed on the cover plate and moves up and down synchronously with the cover plate.

[0007] Furthermore, the silver plating mechanism also includes a rotating plate, which is installed below the cover plate so as to be rotatable around a vertical direction, and a plurality of blades are evenly distributed around the vertical direction at the lower end of the rotating plate.

[0008] Furthermore, a mounting plate is fixedly connected to the lower end of the cover plate, a first motor is provided on the mounting plate, a first bevel gear is provided on the output shaft of the first motor, a second bevel gear is coaxially and fixedly provided on the rotating plate, and the first bevel gear is meshed with the second bevel gear.

[0009] Furthermore, the silver plating mechanism also includes a pitch variable frame, which is located between the mounting plate and the rotating plate. The rotating plate and the pitch variable frame are both rotatably connected to the blade. The blade is a wing-shaped structure. In the initial state, the pitch variable frame and the rotating plate are coaxially arranged in the vertical direction, and the pitch variable frame can move in the horizontal direction.

[0010] Furthermore, the pitch frame includes an upper ring, a lower ring and a plurality of pitch rods. The upper ring is located between the mounting plate and the lower ring. A cylinder is provided on the mounting plate. The output end of the cylinder is connected to the upper ring, so that the upper ring can move in the horizontal direction; a limit ring is coaxially and fixedly provided on the lower ring; the upper ring can move synchronously with the limit ring in the vertical direction, and the upper ring can rotate relative to the limit ring; a plurality of pitch rods are evenly distributed around the vertical direction on the lower ring, and the pitch rods rotate in coordination with the lower ring; the pitch rods are arranged in one-to-one correspondence with the blades, and each pitch rod is rotationally connected to the blade corresponding to it.

[0011] Furthermore, a sealing plate is provided at the upper end of each coating cylinder, which is used to seal the coating cylinder. A first rotating rod is provided at the upper end of the sealing plate, and a first elastic member is sleeved on the first rotating rod, and the first elastic member is arranged in the vertical direction; the upper end of the first elastic member is connected to a limiting block, the first rotating rod is rotatably matched with the limiting block, and the limiting block is connected to its corresponding blade bolt.

[0012] Furthermore, the lower end of each coating cylinder is connected to a rotating block, which can rotate relative to its corresponding coating cylinder and can drive its corresponding coating cylinder to move up and down. The rotating block is arranged in the vertical direction, and a plurality of rotating plates are distributed in the circumferential direction of the rotating block, and the rotating plates are spiral.

[0013] Furthermore, the lower end of the rotating block is rotatably connected to the corresponding blade through a second elastic member, the second elastic member is arranged along the vertical direction, and the second elastic member is a spring; a plurality of first spherical protrusions are evenly distributed on the lower end surface of the rotating block around the vertical direction, and a plurality of second spherical protrusions are arranged on the blade around the vertical direction, and the first spherical protrusions and the second spherical protrusions abut against each other.

[0014] Furthermore, the bracket includes a base and a support rod, the support rod is arranged in a vertical direction and fixed on the base, the liquid cylinder is installed on the base, the cover plate is installed on the support rod through a sliding frame, a driving motor is provided on the sliding frame, a gear is provided on the output shaft of the driving motor, and a rack is provided on the support rod, the rack is arranged in a vertical direction and meshes with the gear.

[0015] The beneficial effects of the present invention are as follows: the chemical silver plating equipment for contact supports of the present invention is provided with a silver plating mechanism. During silver plating, a plurality of blades are driven to revolve in a vertical direction. The rotation of the blades stirs the silver liquid in the liquid holding cylinder, so that the silver liquid is mixed evenly. At the same time, the silver liquid in the plating cylinder can also flow under the action of the blades, thereby enhancing the fluidity of the silver liquid and making the plating of the contact support more uniform. The silver liquid in the liquid holding cylinder will generate a vortex under the action of the blades, thereby causing the plating cylinder rotatably mounted on the blades to rotate under the promotion of the silver liquid, thereby further improving the uniformity and comprehensiveness of the contact between the contact support and the silver liquid at various positions in the circumferential direction of the plating cylinder. As the blades rotate, the silver liquid in the liquid holding cylinder will be subjected to centrifugal force, thereby enabling the silver liquid to further pass through the gaps between the contact supports in contact with each other along the radial direction of the plating cylinder, so that the surfaces of the contact supports that are accumulated or blocked can also be uniformly plated, thereby achieving batch plating while improving the efficiency and quality of plating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the overall structure of an embodiment of a contact support chemical silver plating device of the present invention;

[0018] Figure 2 A front view of the overall structure of an embodiment of a contact support chemical silver plating device of the present invention;

[0019] Figure 3 for Figure 2 Cross-sectional view along the middle line AA;

[0020] Figure 4 A schematic diagram of a partial structure of an embodiment of a contact support chemical silver plating device of the present invention;

[0021] Figure 5 This is a partial structural exploded view of an embodiment of a contact support chemical silver plating device of the present invention;

[0022] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 A schematic diagram of a blade and a plating cylinder of an embodiment of a contact support chemical silver plating device of the present invention;

[0024] Figure 8 A front view of a blade and a plating cylinder of an embodiment of a contact support chemical silver plating device of the present invention;

[0025] Figure 9 This is an exploded view of the blades and plating cylinder of an embodiment of a contact support chemical silver plating device of the present invention;

[0026] Figure 10 for Figure 9 Enlarged view of point C in the middle;

[0027] Figure 11 The figure is a schematic diagram of a rotating block of an embodiment of a contact support chemical silver plating device of the present invention.

[0028] In the figure: 100, bracket; 110, base; 120, support rod; 130, sliding frame; 200, liquid cylinder; 300, cover plate; 310, mounting plate; 311, mounting groove; 320, first motor; 330, first bevel gear; 340, cylinder; 400, silver plating mechanism; 410, blade; 411, second spherical protrusion; 420, plating cylinder; 421, blocking plate; 422, first rotating rod; 423, first elastic member; 424, limiting block; 425, second rotating rod; 426, rotating block; 427, third rotating rod; 428, second elastic member; 429, first spherical protrusion; 430, rotating plate; 431, second bevel gear; 440, pitch change frame; 441, upper ring; 442, lower ring; 443, pitch change rod; 444, limiting ring. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] An embodiment of a contact support chemical silver plating device of the present invention is as follows Figures 1 to 11 shown.

[0031] A contact support chemical silver plating device comprises a bracket 100, a liquid cylinder 200 and a silver plating mechanism 400. The liquid cylinder 200 is arranged in a vertical direction and fixedly mounted on the bracket 100, and the liquid cylinder 200 is filled with silver liquid.

[0032] The silver plating mechanism 400 can move up and down relative to the bracket 100, allowing it to be immersed in or out of the liquid holding cylinder 200. The silver plating mechanism 400 includes a plurality of blades 410 and a plurality of plating cylinders 420. The blades 410 are arranged in a vertical direction, uniformly distributed about the vertical direction, and capable of orbital rotation about the vertical direction. The blades 410 are arranged in a one-to-one correspondence with the plating cylinders 420. The plating cylinders 420 are arranged in the vertical direction and mounted on the corresponding blades 410. The plating cylinders 420 contain a plurality of contact supports to be plated. The plating cylinders 420 are uniformly distributed with a plurality of through-holes to allow the silver liquid to enter the plating cylinders 420. The plating cylinders 420 can orbital rotation about the vertical direction with the corresponding blades 410 and can rotate about their own axes.

[0033] In this embodiment, a silver plating mechanism 400 is provided. During silver plating, a plurality of contact supports to be plated are first placed in the plating cylinder 420. The silver plating mechanism 400 is then moved downward, so that the contact supports in the plating cylinder 420 can be immersed in the silver liquid to start plating. Then, a plurality of blades 410 are driven to revolve in a vertical direction. The rotation of the blades 410 stirs the silver liquid in the liquid cylinder 200 to mix the silver liquid uniformly. At the same time, the silver liquid in the plating cylinder 420 can also flow under the action of the blades 410, thereby enhancing the fluidity of the silver liquid and making the plating of the contact supports more uniform. The silver liquid in the liquid cylinder 200 will be The blades 410 generate a vortex, which causes the plating cylinder 420 rotatably mounted on the blades 410 to rotate under the urging of the silver liquid, further improving the uniformity and comprehensiveness of the contact between the contact supports at various positions in the circumferential direction of the plating cylinder 420 and the silver liquid. As the blades 410 rotate, the silver liquid in the liquid holding cylinder 200 is subjected to the centrifugal force, which enables the silver liquid to further pass through the gaps between the contact supports in contact with each other along the radial direction of the plating cylinder 420, so that the surfaces of the contact supports that are accumulated or blocked can also be uniformly plated, thereby improving the efficiency and quality of the plating while achieving batch plating.

[0034] In a further embodiment, a contact support chemical silver plating device also includes a cover plate 300, which is installed on the bracket 100 and is located above the liquid cylinder 200. The cover plate 300 can move up and down on the bracket 100, and the cover plate 300 moves downward to block the upper end of the liquid cylinder 200. The silver plating mechanism 400 is rotatably installed on the cover plate 300 and moves up and down synchronously with the cover plate 300.

[0035] Specifically, the bracket 100 includes a base 110 and a support rod 120. The support rod 120 is arranged in a vertical direction and fixed on the base 110. The liquid cylinder 200 is fixedly installed on the base 110. The cover plate 300 is installed on the support rod 120 through a sliding frame 130. A driving motor is provided on the sliding frame 130, and a gear is provided on the output shaft of the driving motor. A rack is provided on the support rod 120, and the rack is arranged in a vertical direction and meshes with the gear.

[0036] When in use, the driving motor is started to drive the gear to rotate, and the gear rotates and engages with the rack, so that the gear rotates and moves up and down, thereby moving the sliding frame 130 up and down, and driving the cover plate 300 to move up and down through the sliding frame 130.

[0037] In a further embodiment, the silver plating mechanism 400 further includes a rotating plate 430 , which is installed below the cover plate 300 so as to be rotatable around a vertical direction, and a plurality of blades 410 are evenly distributed around a vertical direction at a lower end of the rotating plate 430 .

[0038] Specifically, the lower end of the cover plate 300 is fixedly connected to a mounting plate 310, a first motor 320 is provided on the mounting plate 310, a first bevel gear 330 is provided on the output shaft of the first motor 320, and a second bevel gear 431 is coaxially and fixedly provided on the rotating plate 430, and the first bevel gear 330 is engaged with the second bevel gear 431.

[0039] By setting the rotating plate 430, when in use, the first motor 320 is started, and the first motor 320 starts to drive the second bevel gear 431 to rotate through the first bevel gear 330, thereby rotating the rotating plate 430, and the rotation of the rotating plate 430 will drive the multiple blades 410 to revolve around the vertical direction.

[0040] In a further embodiment, a blocking plate 421 is provided at the upper end of each coating cylinder 420. The blocking plate 421 is used to block the coating cylinder 420. A first rotating rod 422 is provided at the upper end of the blocking plate 421. A first elastic member 423 is sleeved on the first rotating rod 422. The first elastic member 423 is arranged in a vertical direction and is a spring. The upper end of the first elastic member 423 is connected to a limit block 424. The first rotating rod 422 rotates with the limit block 424, and the limit block 424 is bolted to its corresponding blade 410.

[0041] When the contact holder needs to be placed in the coating cylinder 420, the operator manually tightens the bolts to disassemble the limit block 424 and its corresponding blade 410, then removes the limit block 424 and the sealing plate 421, places the contact holder to be plated into the coating cylinder 420, and then covers the sealing plate 421 on the upper end of the coating cylinder 420 to seal the coating cylinder 420, and then uses the bolts to lock the limit block 424 on the blade 410, and uses the limit block 424 to simultaneously lock the sealing plate 421 to achieve sealing of the upper end of the coating cylinder 420.

[0042] In a further embodiment, the silver plating mechanism 400 also includes a pitch variable frame 440, which is located between the mounting plate 310 and the rotating plate 430. The rotating plate 430 and the pitch variable frame 440 are both rotatably connected to the blade 410. The blade 410 is a wing-shaped structure. In the initial state, the pitch variable frame 440 and the rotating plate 430 are coaxially arranged in the vertical direction, and the pitch variable frame 440 can move in the horizontal direction.

[0043] Specifically, the pitch-changing frame 440 comprises an upper ring 441, a lower ring 442, and a plurality of pitch-changing rods 443. The upper ring 441 is positioned between the mounting plate 310 and the lower ring 442. The mounting plate 310 defines a mounting slot 311, within which a cylinder 340 is positioned. The output end of the cylinder 340 is connected to the upper ring 441, enabling horizontal movement of the upper ring 441. A limit ring 444 is coaxially and fixedly mounted on the lower ring 442. A first annular groove is defined on the inner circumference of the upper ring 441, while a first protrusion is coaxially mounted on the outer circumference of the limit ring 444. The first protrusion is annular and rotatably engages with the first annular groove, enabling the upper ring 441 to move vertically synchronously with the limit ring 444 and relative rotation thereof. Multiple pitch rods 443 are evenly distributed vertically on the upper end surface of the lower ring 442, and the pitch rods 443 are rotatably coupled to the lower ring 442. The pitch rods 443 are arranged one-to-one with the blades 410, and each pitch rod 443 is rotatably connected to its corresponding blade 410.

[0044] Furthermore, the lower end of each coating cylinder 420 is connected to a rotating block 426, which can rotate relative to its corresponding coating cylinder 420 and can drive its corresponding coating cylinder 420 to move up and down. The rotating block 426 is arranged in the vertical direction, and a plurality of rotating plates are evenly distributed in the circumferential direction of the rotating block 426, and the rotating plates are spiral.

[0045] Specifically, a second rotating rod 425 is provided at the lower end of each plating cylinder 420, and the lower end of the second rotating rod 425 is connected to a rotating block 426. A second protrusion is coaxially provided on the outer peripheral wall of the second rotating rod 425, and a second annular groove is provided on the inner peripheral wall of the rotating block 426. The second protrusion is annular and rotates in conjunction with the second annular groove, thereby enabling the rotating block 426 to rotate relative to its corresponding plating cylinder and drive its corresponding plating cylinder 420 to move up and down.

[0046] Alternatively, the lower end of each coating cylinder 420 is fixedly connected to a rotating block 426 , so that when the rotating block 426 rotates and moves, the rotating block 426 can drive the coating cylinder 420 to move synchronously.

[0047] Furthermore, the lower end of the rotating block 426 is rotatably connected to its corresponding blade 410 via a second elastic member 428, which is disposed vertically and is a spring. The lower end surface of the rotating block 426 has a plurality of first spherical protrusions 429 evenly distributed vertically, while the blade 410 has a plurality of second spherical protrusions 411 disposed vertically. The first spherical protrusions 429 and the second spherical protrusions 411 abut against each other.

[0048] Specifically, a third rotating rod 427 is provided at the lower end of the rotating block 426 , and the third rotating rod 427 is rotatably connected to its corresponding blade 410 through a second elastic member 428 .

[0049] In this embodiment, a pitch-changing frame 440 is provided, and a rotating plate 430, a pitch-changing frame 440 and a plurality of blades 410 are used to form a cycloidal paddle structure in the prior art. When the first motor 320 is started to drive the rotating plate 430 to rotate, the rotation of the rotating plate 430 will drive the blades 410 to revolve. If the cylinder 340 does not move, the blades 410 will drive the pitch-changing rod 443 to rotate synchronously, and the pitch-changing rod 443 will drive the lower ring 442 of the pitch-changing frame 440 to rotate, so that the lower ring 442 rotates relative to the upper ring 441.

[0050] When the cylinder 340 is started and moves regularly, the cylinder 340 drives the upper ring 441 to move in the horizontal direction, and pulls the variable pitch pull rod 443 on the lower ring 442 through the upper ring 441, and uses the variable pitch pull rod 443 to pull the blade 410, so that the variable pitch frame 440 exhibits regular eccentric movement, thereby changing the rotation angle of the blade 410. When the change in the rotation angle of the blade 410 increases the flow rate of the silver liquid passing through the blade 410, it can accelerate the stirring of the silver liquid and give the rotating block 426 a positive force. The force of the rotating piece causes the rotating block 426 to rotate relative to the plating cylinder 420. The rotation of the rotating block 426 will cause relative movement between the first spherical protrusion 429 and the second spherical protrusion 411, thereby enabling the rotating block 426 to vibrate up and down, and drive the plating cylinder 420 to vibrate up and down, so that the contact support in the plating cylinder 420 can vibrate, changing its state in the plating cylinder 420, so that the surfaces where the multiple contact supports originally contacted and squeezed each other are exposed as much as possible, thereby improving the integrity of the plating and the quality of the plating.

[0051] When the rotating block 426 is fixedly connected to the plating cylinder 420, the rotation of the rotating block 426 will also drive the plating cylinder 420 to rotate synchronously, and the rotation of the plating cylinder 420 is used to further improve the comprehensiveness of the contact between the contact support and the silver liquid at various positions in the circumferential direction of the plating cylinder 420.

[0052] After the plating is completed, the speed of the first motor 320 can be increased, so that the silver liquid in the liquid holding cylinder 200 generates a vortex under the action of the blades 410, so that the plating cylinder 420 is separated from the silver liquid as much as possible. That is, in the initial state, the silver liquid in the liquid holding cylinder 200 is higher than the plating cylinder 420, but is not full. During the rotation of the first motor 320, the excess silver liquid on the contact support is thrown out by the centrifugal force, preventing the formation of plaques on the workpiece and causing uneven plating. The thrown-off silver liquid will fall back into the liquid holding cylinder 200 to avoid waste. The drive motor is then started, and the silver plating mechanism 400 is completely lifted out of the liquid holding cylinder 200 using the cover plate 300. In order to ensure the quality of the contact support, the first motor 320 can be started again after the silver plating mechanism 400 is lifted out to ensure that the excess silver liquid on the contact support can be completely thrown out. It should be noted that during the plating process, the speed of the first motor 320 is slowly increased to the maximum to ensure that during the plating process, the vortex generated by the silver liquid in the liquid holding cylinder 200 under the action of the blades 410 does not cause the plating cylinder 420 to separate from the silver liquid, that is, during the plating process, the plating cylinder 420 is always in the silver liquid.

[0053] In combination with the above embodiment, the specific working process is as follows:

[0054] When the contact holder needs to be placed in the coating cylinder 420, the operator manually tightens the bolts to disassemble the limit block 424 and its corresponding blade 410, then removes the limit block 424 and the sealing plate 421, places the contact holder to be plated into the coating cylinder 420, and then covers the sealing plate 421 on the upper end of the coating cylinder 420 to seal the coating cylinder 420, and then uses the bolts to lock the limit block 424 on the blade 410, and uses the limit block 424 to simultaneously lock the sealing plate 421 to achieve sealing of the upper end of the coating cylinder 420.

[0055] The driving motor is started, and the driving motor can drive the gear to rotate. The gear rotates and engages with the rack, so that the gear rotates and moves downward, thereby moving the sliding frame 130 downward, and the sliding frame 130 drives the cover plate 300 to move downward, so that the contact support in the plating cylinder 420 can be immersed in the silver liquid to start plating.

[0056] When the first motor 320 is started, it will drive the second bevel gear 431 to rotate via the first bevel gear 330, thereby rotating the rotating plate 430. The rotation of the rotating plate 430 will drive the multiple blades 410 to orbit around the vertical direction. When the first motor 320 is started to rotate the rotating plate 430, the rotation of the rotating plate 430 will drive the blades 410 to orbit. If the cylinder 340 is not actuated, the blades 410 will drive the pitch-changing rod 443 to rotate synchronously. The pitch-changing rod 443 will then drive the lower ring 442 of the pitch-changing frame 440 to rotate, causing the lower ring 442 to rotate relative to the upper ring 441.

[0057] The rotation of the blades 410 will stir the silver liquid in the liquid holding cylinder 200, making the silver liquid mixed evenly. At the same time, the silver liquid in the plating cylinder 420 can also flow under the action of the blades 410, thereby enhancing the fluidity of the silver liquid and making the plating of the contact support more uniform. The silver liquid in the liquid holding cylinder 200 will generate a vortex under the action of the blades 410, thereby causing the plating cylinder 420 rotatably mounted on the blades 410 to rotate under the promotion of the silver liquid, further improving the uniformity and comprehensiveness of the contact between the contact support at various positions in the circumferential direction of the plating cylinder 420 and the silver liquid. As the blades 410 rotate, the silver liquid in the liquid holding cylinder 200 will be affected by centrifugal force, thereby allowing the silver liquid to further pass through the gaps between the contact supports in contact with each other along the radial direction of the plating cylinder 420, so that the accumulated and blocked contact support surfaces can also be evenly plated.

[0058] When the cylinder 340 is started and moves regularly, the cylinder 340 drives the upper ring 441 to move in the horizontal direction, and pulls the variable pitch pull rod 443 on the lower ring 442 through the upper ring 441, and uses the variable pitch pull rod 443 to pull the blade 410, so that the variable pitch frame 440 exhibits regular eccentric movement, thereby changing the rotation angle of the blade 410. When the change in the rotation angle of the blade 410 increases the flow rate of the silver liquid passing through the blade 410, it can accelerate the stirring of the silver liquid and give the rotating block 426 a positive force. The force of the rotating piece causes the rotating block 426 to rotate relative to the plating cylinder 420. The rotation of the rotating block 426 will cause relative movement between the first spherical protrusion 429 and the second spherical protrusion 411, thereby enabling the rotating block 426 to vibrate up and down, and drive the plating cylinder 420 to vibrate up and down, so that the contact support in the plating cylinder 420 can vibrate, changing its state in the plating cylinder 420, so that the surfaces where the multiple contact supports originally contacted and squeezed each other are exposed as much as possible, thereby improving the integrity of the plating and the quality of the plating.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A contact support chemical silver plating device, characterized in that: The silver plating mechanism comprises a bracket, a liquid holding cylinder and a silver plating mechanism; the liquid holding cylinder is arranged in a vertical direction and mounted on the bracket, and the liquid holding cylinder is filled with silver liquid; the silver plating mechanism comprises a plurality of blades and a plurality of plating cylinders, the blades are arranged in one-to-one correspondence with the plating cylinders, the plating cylinders are arranged in a vertical direction and mounted on the blades arranged corresponding thereto, a plurality of contact supports to be plated are placed in the plating cylinders, and a plurality of through holes are uniformly distributed on the plating cylinders; the silver plating mechanism also comprises a cover plate, a rotating plate and a pitch-changing frame, the cover plate is mounted on the bracket and is located above the liquid holding cylinder, the cover plate can move up and down on the bracket, and the cover plate can seal the upper end of the liquid holding cylinder by moving downward The silver plating mechanism is rotatably mounted on the cover plate and moves up and down synchronously with the cover plate, so that the silver plating mechanism can be immersed in or out of the liquid cylinder; the rotating plate can be rotatably mounted under the cover plate in the vertical direction, and a plurality of blades are evenly distributed in the vertical direction at the lower end of the rotating plate and can revolve around the vertical direction. The silver liquid in the barrel will generate a vortex under the action of the blades, thereby causing the plating cylinder rotatably mounted on the blades to rotate under the promotion of the silver liquid; the pitch frame is located between the mounting plate and the rotating plate, and the rotating plate and the pitch frame are both rotatably connected to the blades. The blades are wing-shaped structures. In the initial state, the pitch frame and the rotating plate are in a state of rotation. It is coaxially arranged in the vertical direction, and the pitch frame can move in the horizontal direction; the pitch frame includes an upper ring, a lower ring and a plurality of pitch rods, the upper ring is located between the mounting plate and the lower ring, a cylinder is arranged on the mounting plate, and the output end of the cylinder is connected to the upper ring, so that the upper ring can move in the horizontal direction; a limit ring is coaxially and fixedly arranged on the lower ring; the upper ring can move synchronously with the limit ring in the vertical direction, and the upper ring can rotate relative to the limit ring; a plurality of pitch rods are evenly distributed around the vertical direction on the lower ring, and the pitch rods rotate in coordination with the lower ring; the pitch rods are arranged in one-to-one correspondence with the blades, and each pitch rod is The rotating block is arranged in a vertical direction, and a plurality of rotating pieces are evenly distributed in the circumferential direction of the rotating block, and the rotating pieces are spiral-shaped; the lower end of the rotating block is rotatably connected to the blades arranged correspondingly thereto through a second elastic member; a plurality of first spherical protrusions are evenly distributed in the vertical direction on the lower end surface of the rotating block, and a plurality of second spherical protrusions are arranged on the blades around the vertical direction, and the first spherical protrusions and the second spherical protrusions abut against each other.

2. The contact support chemical silver plating equipment according to claim 1, characterized in that: The lower end of the cover plate is fixedly connected to a mounting plate, on which a first motor is arranged, a first bevel gear is arranged on the output shaft of the first motor, a second bevel gear is coaxially and fixedly arranged on the rotating plate, and the first bevel gear is meshed with the second bevel gear.

3. The contact support chemical silver plating equipment according to claim 1, characterized in that: A sealing plate is provided at the upper end of each coating cylinder, which is used to seal the coating cylinder. A first rotating rod is provided at the upper end of the sealing plate, and a first elastic member is sleeved on the first rotating rod. The first elastic member is arranged in a vertical direction; the upper end of the first elastic member is connected to a limiting block, the first rotating rod is rotatably matched with the limiting block, and the limiting block is connected to its corresponding blade bolt.

4. The contact support chemical silver plating equipment according to claim 1, characterized in that: The second elastic member is arranged along the vertical direction, and the second elastic member is a spring.

5. The contact support chemical silver plating equipment according to claim 1, characterized in that: The bracket includes a base and a support rod. The support rod is arranged in a vertical direction and fixed on the base. The liquid cylinder is installed on the base. The cover plate is installed on the support rod through a sliding frame. A driving motor is provided on the sliding frame. A gear is provided on the output shaft of the driving motor. A rack is provided on the support rod. The rack is arranged in a vertical direction and meshes with the gear.

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