An electrical current needle surface protection coating apparatus

Abstract

The present application relates to the technical fields of electronic device processing, in particular to a kind of current needle surface protective coating equipment. Including material distribution unit and material moving unit, the material distribution unit side is provided with pickling unit;The pickling unit side away from material distribution unit is provided with chrome plating unit;The material moving unit bottom respectively moves and extends to pickling unit and chrome plating unit cavity;And the input end of the material moving unit is movably attached on the output end of material distribution unit.The present application is driven by power output component to make first outer ring rotate at uniform speed, let each group of current needle immerse in pickling solution or electroplating solution in turn, then leave and air dry, so on and so forth, and because it is always in motion, pickling solution or electroplating solution can realize the flushing of current needle, not simply soak, thereby improve the operation strength.Implementing automatic feeding, improving the degree of automation, also improve pickling and electroplating effect.

Description

Technical Field

[0001] This invention belongs to the field of electronic device processing technology, and specifically relates to a protective coating device for the surface of an electric needle. Background Technology

[0002] As an electronic device, the current needle needs to be electroplated with a protective coating on its surface in order to improve its service life. This protective coating is usually chromium.

[0003] A search revealed a patent document with publication number CN120485919A, published on April 17, 2025, entitled "Electroplating Apparatus and Method of Use Thereof," which includes: a wafer carrier, an auxiliary device, an electroplating tank, and a telescopic connector; the wafer carrier is used to horizontally fix the wafer to be plated, and the wafer carrier can move up and down to drive the wafer to move up and down; the auxiliary device includes a spray tank, a liquid inlet pipe embedded in the bottom of the spray tank, and a plurality of nozzles connected to the liquid inlet pipe, the nozzles being disposed on the surface of the bottom of the spray tank facing the inside of the tank, one end of the liquid inlet pipe being an open end and the other end being a closed end; the auxiliary device is connected to the wafer carrier through the telescopic connector, and by adjusting the telescopic connector, at least the spray tank of the auxiliary device can be horizontal with the inside of the tank facing the wafer carrier and positioned between the wafer carrier and the electroplating tank, and the auxiliary device can be rotated to the outside of the electroplating tank. In the above embodiment, during electroplating, the auxiliary device can be rotated to the outside of the electroplating tank to perform the draining and cleaning operation, without affecting the normal electroplating steps, thus improving the stability and efficiency of the electroplating process.

[0004] However, the above embodiments still have the following drawbacks:

[0005] The above embodiments use conventional immersion to electroplate the device, which keeps the device in a static state, making it easy for electroplating dead spots to appear, and the electroplating effect on each side of the device is also inconsistent. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a protective coating device for the surface of an electric needle, comprising a dispensing unit and a material moving unit. An acid pickling unit is disposed on one side of the dispensing unit; a chrome plating unit is disposed on the side of the acid pickling unit away from the dispensing unit; the bottom of the material moving unit extends movably into the cavities of the acid pickling unit and the chrome plating unit, respectively; and the input end of the material moving unit is movably attached to the output end of the dispensing unit.

[0007] The material moving unit includes a power output component and an outer cover. A first rotating wheel is provided below the power output component. A first outer ring is concentrically arranged around the first rotating wheel. Several sets of needle limiting mechanisms are distributed in a circular array on the inner wall of the first outer ring. A toothed ring is fixedly sleeved on the outer wall of the first outer ring, and the toothed ring is drivenly connected to the output end of the power output component. The outer cover is movably mounted on the first rotating wheel. A second outer ring is concentrically arranged around the outer cover. Several sets of sealing covers, the same number as the needle limiting mechanisms, are distributed in a circular array on the inner wall of the second outer ring. Each set of sealing covers is movably mounted on a corresponding set of needle limiting mechanisms.

[0008] Furthermore, one end of an electric slide is located directly above the material distribution unit, and the other end of the electric slide extends horizontally to directly above the chrome-plated unit; the material moving unit is connected to the bottom of the electric slide via a transmission.

[0009] Furthermore, the material distribution unit includes a material distribution box, the top of which has a feeding port, and the inner wall of the feeding port is designed as a V-shaped slope; a discharge channel is connected to the bottom edge of the side wall of the V-shaped slope near the pickling unit, the discharge channel is inclined, and the end near the V-shaped slope is higher; a push channel with a semi-circular cross-section is opened at the bottom edge of the end of the discharge channel away from the V-shaped slope, and a baffle block is provided at the top of the push channel; a rod opening and a needle outlet are respectively opened at both ends of the push channel.

[0010] Furthermore, a pushing mechanism is provided on the side of the pushing channel near the opening of the pestle, and the output end of the pushing mechanism extends movably into the opening of the pestle; the input end of the material moving unit is movably attached to the needle outlet.

[0011] Furthermore, the pushing mechanism includes a vertical plate, on which a miniature electric push rod is fixedly installed horizontally along one side wall of the vertical plate near the material distribution box; one end of a pestle is connected to the output end of the miniature electric push rod, and a bell-shaped rod head is installed at the other end of the pestle; a first semi-circular groove is opened at the port of the rod head, and the end of the rod head near the first semi-circular groove extends movably into the opening of the pestle.

[0012] A sight ring is slidably sleeved around the outside of the pestle, and an extension rod is fixedly installed on the sight ring. The other end of the extension rod is fixedly installed on the upright plate.

[0013] Furthermore, the power output component includes a servo electric cylinder arranged in a vertical direction, a motor housing mounted at the bottom of the servo electric cylinder, a servo motor arranged horizontally inside the motor housing, a transmission gear connected to the output end of the servo motor, and the bottom of the transmission gear extending directly below the motor housing; the gear ring meshes with the transmission gear.

[0014] Furthermore, a bearing is provided at the bottom of the motor housing; the first rotating wheel is rotatably connected to the bearing, and several sets of first connecting rods are fixedly connected between the first rotating wheel and the first outer ring; an outer cover locking hole is provided on the first rotating wheel, and the outer cover is movably locked onto the outer cover locking hole; several sets of material passage grooves are distributed in a ring array around the first outer ring.

[0015] Furthermore, the needle limiting mechanism includes a limiting cylinder, on the surface of which several sets of flow ports are evenly distributed. One end of the limiting cylinder is provided with an opening, and the sealing cap is movably installed on the opening. The other end of the limiting cylinder is provided with a second semi-circular groove.

[0016] Furthermore, the chromium plating unit includes an electroplating tank with a top opening at the top. The first rotating wheel extends movably into the electroplating tank through the top opening. The bottom of the electroplating tank has a bottom slope, with the height of the bottom slope near the top opening being lower than that of the other end. Two sets of air outlets are symmetrically arranged on the two sides of the top opening. A set of fan-shaped air outlets is opened on the opposite side walls of the two sets of air outlets. The input end of the air outlet is connected to the output end of the air supply device.

[0017] Furthermore, a wave-pushing plate is fixedly installed on the side wall of the electroplating tank away from the top opening. The port cross-section of the wave-pushing plate is a fan-shaped structure, and the inner wall of the wave-pushing plate is inclined downward. Several sets of high-pressure nozzles are arranged at equal intervals along the horizontal direction on the inner wall of the wave-pushing plate, and the output end of each set of high-pressure nozzles is connected to the output end of the air supply device.

[0018] The beneficial effects of this invention are:

[0019] 1. First, one set of needle-body limiting mechanisms is attached to the output end of the dispensing unit. Then, the power output component drives the first outer ring to rotate intermittently, and the dispensing unit sequentially pushes the current needles into each set of needle-body limiting mechanisms. Next, the bottom of the first outer ring is sequentially immersed in the pickling unit and the chrome plating unit. At this time, the power output component drives the first outer ring to rotate at a constant speed, allowing each set of current needles to be immersed in the pickling solution or electroplating solution in turn, and then removed for air drying. This cycle is repeated. Because it is constantly in motion, the pickling solution or electroplating solution can rinse the current needles, rather than simply immersing them, thus improving the efficiency of the operation. While achieving automatic feeding and improving the degree of automation, it also improves the pickling and electroplating effects.

[0020] 2. Because the sides of the feeding port are V-shaped slopes, when the current needles move to the V-shaped slopes, only one set of current needles can pass through. They are arranged one by one along the discharge channel and eventually fall into the pushing channel. Then, the current needles are prevented from accumulating by the baffle block. Then, the micro electric push rod is activated to push the rod head into the pushing channel, and the current needles in the pushing channel are pushed out from the needle body outlet and into the material moving unit. This process is repeated to achieve automatic feeding, further realizing the automation level of the feeding operation and improving the auxiliary effect on the chrome plating operation.

[0021] 3. Because the inner wall of the wave-pushing plate is inclined downwards, high-pressure gas is ejected through each set of high-pressure nozzles. This high-pressure gas propels the electroplating solution into artificial waves within the electroplating tank, preventing sedimentation and continuously pushing the solution towards the current needle. This accelerates the adhesion time of chromium ions in the electroplating solution to the surface of the current needle, thereby improving work efficiency.

[0022] 4. First, the second and third semicircular grooves prevent the current needle from shaking. Then, several sets of flow ports are evenly distributed around the perimeter of the limiting cylinder, so that the pickling solution or electroplating solution can be evenly applied to the surface of the current needle from all sides. This also prevents the current needle from shaking due to constant movement, or even colliding with the inner wall of the limiting cylinder, thus improving the protection effect of the current needle and increasing the contact area between the pickling solution or electroplating solution and the current needle.

[0023] 5. The sight ring ensures that the central axis of the pestle and the cover head always coincides with the central axis of the pestle opening, preventing the cover head sight from shifting due to long-term use, thereby improving the protection of the device components.

[0024] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of a coating apparatus according to an embodiment of the present invention is shown.

[0027] Figure 2A schematic diagram of the material dispensing unit according to an embodiment of the present invention is shown.

[0028] Figure 3 A cross-sectional schematic diagram of a dispensing bin according to an embodiment of the present invention is shown.

[0029] Figure 4 A schematic diagram of the pusher mechanism according to an embodiment of the present invention is shown.

[0030] Figure 5 An enlarged schematic diagram of the pole head according to an embodiment of the present invention is shown.

[0031] Figure 6 A schematic diagram of the structure of a material moving unit according to an embodiment of the present invention is shown.

[0032] Figure 7 A schematic diagram showing the connection between the first rotating wheel and the first outer ring according to an embodiment of the present invention is shown.

[0033] Figure 8 A rear view schematic diagram of the outer cover according to an embodiment of the present invention is shown.

[0034] Figure 9 A cross-sectional schematic diagram of a needle limiting mechanism according to an embodiment of the present invention is shown.

[0035] Figure 10 A cross-sectional schematic diagram of a chrome plating unit according to an embodiment of the present invention is shown.

[0036] In the diagram: 100, material distribution unit; 110, material distribution box; 111, feeding port; 112, V-shaped ramp; 113, pestle rod opening; 120, discharge channel; 130, pushing channel; 131, baffle block; 140, pushing mechanism; 141, vertical plate; 142, miniature electric push rod; 143, pestle rod; 144, rod head; 145, first semi-circular groove; 146, sight ring; 147, extension rod; 200, air supply device; 300, material moving unit; 301, servo electric cylinder; 302, motor box; 303, servo motor; 304, transmission gear; 305, bearing; 310, first rotating wheel; 311. First connecting rod; 312. Outer cover locking hole; 320. First outer ring; 321. Material passage groove; 330. Toothed ring; 340. Needle body limiting mechanism; 341. Limiting cylinder; 342. Flow port; 343. Opening; 344. Second semi-circular groove; 350. Outer cover; 351. Locking block; 360. Second outer ring; 370. Sealing cover; 371. Third semi-circular groove; 400. Pickling unit; 500. Chrome plating unit; 510. Electroplating tank; 511. Top opening; 512. Bottom slope; 520. Air outlet plate; 521. Air outlet; 530. Wave pusher plate; 531. High-pressure nozzle; 600. Electric slide table. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] This invention provides a protective coating device for the surface of an electric needle, exemplarily, such as... Figure 1 As shown, the device includes a material distribution unit 100 and an air supply device 200. A pickling unit 400 is located on one side of the material distribution unit 100. The material distribution unit 100 is used to arrange and feed the current needles. The pickling unit 400 is used to clean oxides or impurities from the surface of the current needles before chromium plating.

[0039] For example, a chromium plating unit 500 is provided on the side of the pickling unit 400 away from the dispensing unit 100, and the structure of the chromium plating unit 500 is the same as that of the pickling unit 400. The chromium plating unit 500 is used to apply an electro-chromium protective coating to the surface of the current needle.

[0040] For example, one end of an electric slide table 600 is disposed directly above the material dispensing unit 100, and the other end of the electric slide table 600 extends horizontally to directly above the chrome plating unit 500.

[0041] For example, the bottom of the electric slide table 600 is connected to a material moving unit 300, the bottom of which extends movably into the cavities of the pickling unit 400 and the chrome plating unit 500. The input end of the material moving unit 300 is movably attached to the output end of the dispensing unit 100. The material moving unit 300 is used to drive a batch of current needles to sequentially perform the feeding, pickling, and chrome plating steps.

[0042] For example, such as Figure 2 and Figure 3 As shown, the material distribution unit 100 includes a material distribution box 110. The top of the material distribution box 110 has a feeding port 111, and the inner wall of the feeding port 111 is a V-shaped ramp 112. A discharge channel 120 is connected to the bottom edge of the side wall of the V-shaped ramp 112 near the pickling unit 400. The discharge channel 120 is inclined, and the end near the V-shaped ramp 112 is higher. A push channel 130 with a semi-circular cross-section is formed at the bottom edge of the end of the discharge channel 120 away from the V-shaped ramp 112. A baffle block 131 is provided at the top of the push channel 130. A rod opening 113 and a needle outlet are respectively formed at both ends of the push channel 130.

[0043] Specifically, a pushing mechanism 140 is provided on the side of the pushing channel 130 near the rod opening 113, and the output end of the pushing mechanism 140 extends movably into the rod opening 113. The input end of the material moving unit 300 is movably attached to the needle outlet.

[0044] For example, such as Figure 4 and Figure 5 As shown, the pushing mechanism 140 includes a vertical plate 141. A miniature electric push rod 142 is fixedly installed horizontally on one side wall of the vertical plate 141 near the material distribution box 110. The brand and model of the miniature electric push rod 142 is LUILEC-LMNTL. One end of a pestle 143 is connected to the output end of the miniature electric push rod 142. The other end of the pestle 143 is equipped with a trumpet-shaped rod head 144. The port of the rod head 144 has a first semi-circular groove 145. The end of the rod head 144 near the first semi-circular groove 145 extends movably into the pestle opening 113.

[0045] Specifically, a sight ring 146 is slidably sleeved around the outside of the pestle 143, and an extension rod 147 is fixedly installed on the sight ring 146. The other end of the extension rod 147 is fixedly installed on the upright plate 141.

[0046] First, a batch of current needles are placed in the feeding port 111 in the same direction. Since the two side walls of the feeding port 111 are V-shaped ramps 112, the number of current needles stacked gradually decreases as they descend. When they reach the V-shaped ramp 112, only one set of current needles can pass through, and they are arranged one by one along the discharge channel 120. When the current needles move to the end of the discharge channel 120 away from the V-shaped ramp 112, they will fall into the pushing channel 130. Due to the obstruction of the baffle block 131, only one set of current needles can enter the pushing channel 130, avoiding the accumulation of current needles and affecting the pushing operation. Then, the micro electric push rod 142 is activated to push the rod head 144 and the rod 143 through the rod opening 113 into the pushing channel 130, and push the current needles in the pushing channel 130 out of the needle body outlet and into the material moving unit 300. This process is repeated to achieve automatic feeding, ensuring the automation level of the feeding operation and improving the auxiliary effect on the chrome plating operation. The sight ring 146 ensures that the central axis of the rod 143 and the cover head 144 always coincides with the central axis of the rod opening 113, avoiding the sight deviation of the cover head 144 caused by long-term use, thereby improving the protection effect on the device components.

[0047] For example, such as Figure 6 and Figure 7As shown, the material moving unit 300 includes a power output component, which includes a servo cylinder 301 arranged vertically. A motor housing 302 is mounted on the bottom of the servo cylinder 301. A servo motor 303 is horizontally arranged inside the motor housing 302. A transmission gear 304 is drivenly connected to the output end of the servo motor 303. The bottom of the transmission gear 304 extends to directly below the motor housing 302. A bearing 305 is provided at the bottom of the motor housing 302.

[0048] For example, a first rotating wheel 310 is rotatably connected to the bearing 305. A first outer ring 320 is concentrically arranged around the first rotating wheel 310. A plurality of first connecting rods 311 are fixedly connected between the first rotating wheel 310 and the first outer ring 320. An outer cover locking hole 312 is provided at the center of the side wall of the first rotating wheel 310 away from the bearing 305. A plurality of material passage grooves 321 are arranged in a circular array around the first outer ring 320, and a plurality of needle limiting mechanisms 340 are arranged in a circular array on the inner wall of the first outer ring 320. A toothed ring 330 is fixedly sleeved on the outer wall of the first outer ring 320, and the toothed ring 330 is meshed with a transmission gear 304.

[0049] For example, such as Figure 8 As shown, the material moving unit 300 also includes an outer cover 350, which is movably attached to the first rotating wheel 310. A locking block 351 is provided on the outer cover 350, and the locking block 351 is movably engaged within the outer cover locking hole 312. A second outer ring 360 is concentrically arranged around the outer cover 350. A plurality of sets of sealing caps 370, the same number as the needle body limiting mechanism 340, are distributed in a circular array on the inner wall of the second outer ring 360. Each sealing cap 370 has a third semi-circular groove 371. Each set of sealing caps 370 is movably mounted on a corresponding set of needle body limiting mechanisms 340.

[0050] For example, such as Figure 9 As shown, the needle limiting mechanism 340 includes a limiting cylinder 341. Several sets of flow ports 342 are evenly distributed on the surface of the limiting cylinder 341. One end of the limiting cylinder 341 is provided with an opening 343, and the sealing cap 370 is movably installed on the opening 343. The other end of the limiting cylinder 341 is provided with a second semi-circular groove 344.

[0051] First, the electric slide 600 transports the first rotating wheel 310 to the distribution box 110, and the input end of one set of needle body limiting mechanisms 340 is placed against the needle body outlet. As the pushing mechanism 140 pushes the current needle into the set of needle body limiting mechanisms 340, the servo motor 303 drives the transmission gear 304 to rotate. The transmission gear 304 then drives the gear ring 330, the first rotating wheel 310, and the first outer ring 320 to rotate, so that the input ends of adjacent sets of needle body limiting mechanisms 340 in the rotational direction can be placed against the overall outlet, thus completing the loading of one set of current needles. This process continues until the first outer ring 320 rotates one full revolution, ensuring that each set of needle body limiting mechanisms 340 contains one set of current needles. Then, the outer cover 350 and the second outer ring are fixed on the first rotating wheel 310 and the first outer ring 320 respectively, so that each set of sealing covers 370 can be installed on their respective set of needle body limiting mechanisms 340, and the second semicircular groove 344 and the third semicircular groove 371 are used to abut from both ends to fix each set of current needles and prevent them from shaking.

[0052] Then, the electric slide table 600 drives each group of current needles to move to the pickling unit 400 for pickling. During pickling, the servo cylinder 301 drives the first rotating wheel 310 to descend. When the bottom of the first rotating wheel 310 is submerged in the cavity of the pickling unit 400, the servo motor 303 is started, which drives the transmission gear 304 to rotate. This causes the first outer ring 320 to drive each group of needle body limiting mechanisms 340 to be submerged in the pickling solution in sequence. Then, as the first outer ring 320 rotates, each group of current needles can be pickled and dried repeatedly at a uniform speed. Because they are always in motion, the pickling solution can rinse the current needles instead of simply soaking them, thereby improving the pickling force.

[0053] Since the structure of the chromium plating unit 500 is the same as that of the pickling unit 400, the same method is used to make the electroplating solution have a greater scouring force on the current needle, thereby improving the electroplating effect.

[0054] For example, such as Figure 10 As shown, the chrome plating unit 500 includes an electroplating tank 510. The electroplating tank 510 has a top opening 511, and the first rotating wheel 310 extends movably into the electroplating tank 510 through the top opening 511. The bottom of the electroplating tank 510 has a bottom slope 512, with the height of one end of the bottom slope 512 near the top opening 511 being lower than the other end. Two sets of air outlets 520 are symmetrically arranged on the two sides of the top of the top opening 511. Each of the two sets of air outlets 520 has a fan-shaped air outlet 521 on its opposite side walls. The input end of the air outlet 521 is connected to the output end of the air supply device 200.

[0055] For example, a wave-pushing plate 530 is fixedly installed on the side wall of the electroplating tank 510 away from the top opening 511. The port cross-section of the wave-pushing plate 530 is a fan-shaped structure, and the inner wall of the wave-pushing plate 530 is inclined downward. Several sets of high-pressure nozzles 531 are arranged at equal intervals along the horizontal direction on the inner wall of the wave-pushing plate 530, and the output end of each set of high-pressure nozzles 531 is connected to the output end of the air supply device 200.

[0056] First, the bottom of the first outer ring 320 is submerged in the electroplating tank 510, and the top of the first outer ring 320 is positioned at the air outlet 521. As the first outer ring 320 rotates, each group of current needles undergoes a cyclical process of electroplating and drying. This rotation method ensures more even electroplating on the surface of the current needles. Simultaneously, because the inner wall of the wave-pushing plate 530 is inclined downwards, high-pressure gas is ejected through each group of high-pressure nozzles 531. This high-pressure gas propels the electroplating solution into artificial waves within the electroplating tank, preventing sedimentation and continuously pushing the solution towards one side of the current needles. This accelerates the adhesion time of chromium ions in the electroplating solution to the surface of the current needles, thereby improving work efficiency.

[0057] The above embodiments have the following beneficial effects:

[0058] 1. First, one set of needle limiting mechanisms 340 is attached to the output end of the dispensing unit 100. Then, the power output component drives the first outer ring 320 to rotate intermittently, and the dispensing unit 100 pushes the current needles sequentially into each set of needle limiting mechanisms 340. Next, the bottom of the first outer ring 320 is sequentially immersed in the pickling unit 400 and the chrome plating unit 500. At this time, the power output component drives the first outer ring 320 to rotate at a uniform speed, allowing each set of current needles to be immersed in the pickling solution or electroplating solution in sequence, and then removed for air drying. This cycle is repeated. Because it is constantly in motion, the pickling solution or electroplating solution can rinse the current needles, rather than simply immersing them, thus improving the efficiency of the operation. While achieving automatic feeding and improving the degree of automation, it also improves the pickling and electroplating effects.

[0059] 2. Because the two side walls of the feeding port 111 are V-shaped ramps 112, when the current needles move to the V-shaped ramps 112, only one set of current needles can pass through. They are arranged one by one along the discharge channel 120 and finally fall into the push channel 130. Then, the current needles are blocked by the baffle block 131 to prevent them from accumulating. Then, the micro electric push rod 142 is activated to push the rod head 144 into the push channel 130, and push the current needles in the push channel 130 out of the needle body outlet and into the material moving unit 300. This process is repeated to achieve automatic feeding, further realizing the automation of the feeding operation and improving the auxiliary effect on the chrome plating operation.

[0060] 3. Because the inner wall of the wave-pushing plate 530 is inclined downwards, high-pressure gas is ejected through each set of high-pressure nozzles 531. This high-pressure gas propels the electroplating solution into artificial waves within the electroplating tank, preventing sedimentation and continuously pushing the solution towards the current needle. This accelerates the adhesion time of chromium ions in the electroplating solution to the surface of the current needle, thereby improving work efficiency.

[0061] 4. First, the second semicircular groove 344 and the third semicircular groove 371 prevent the current needle from shaking. Then, several sets of flow ports 342 are evenly distributed around the limiting cylinder 341, so that the pickling solution or electroplating solution can be evenly applied to the surface of the current needle from all sides. This also prevents the current needle from shaking due to constant movement, or even colliding with the inner wall of the limiting cylinder 341, thus improving the protection effect of the current needle and increasing the contact area between the pickling solution or electroplating solution and the current needle.

[0062] 5. The sight ring 146 ensures that the central axis of the pestle 143 and the cover head 144 always coincides with the central axis of the pestle opening 113, thus preventing the sight of the cover head 144 from shifting due to long-term use and improving the protection of the device components.

[0063] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective coating device for the surface of an electric needle, comprising a dispensing unit and a material moving unit, characterized in that: A pickling unit is provided on one side of the material distribution unit; a chrome plating unit is provided on the side of the pickling unit away from the material distribution unit; the bottom of the material moving unit extends movably into the cavities of the pickling unit and the chrome plating unit respectively; and the input end of the material moving unit is movably attached to the output end of the material distribution unit. The material moving unit includes a power output component and an outer cover. A first rotating wheel is provided below the power output component. A first outer ring is concentrically arranged around the first rotating wheel. Several sets of needle limiting mechanisms are distributed in a circular array on the inner wall of the first outer ring. A toothed ring is fixedly sleeved on the outer wall of the first outer ring, and the toothed ring is drivenly connected to the output end of the power output component. The outer cover is movably mounted on the first rotating wheel. A second outer ring is concentrically arranged around the outer cover. Several sets of sealing covers, the same number as the needle limiting mechanisms, are distributed in a circular array on the inner wall of the second outer ring. Each set of sealing covers is movably mounted on a corresponding set of needle limiting mechanisms.

2. The protective coating device for the surface of an electric needle according to claim 1, characterized in that: One end of the electric slide is located directly above the material distribution unit, and the other end of the electric slide extends horizontally to directly above the chrome-plated unit; the material moving unit is connected to the bottom of the electric slide via a transmission.

3. The protective coating device for the surface of an electric needle according to claim 1, characterized in that: The material distribution unit includes a material distribution box, the top of which has a feeding port, and the inner wall of the feeding port is designed as a V-shaped slope; a discharge channel is connected to the bottom edge of the side wall of the V-shaped slope near the pickling unit, the discharge channel is inclined, and the end near the V-shaped slope is higher; a push channel with a semi-circular cross-section is opened at the bottom edge of the end of the discharge channel away from the V-shaped slope, and a baffle block is provided at the top of the push channel; a rod opening and a needle outlet are respectively opened at both ends of the push channel.

4. The protective coating device for the surface of an electric needle according to claim 3, characterized in that: The feeding channel is provided with a feeding mechanism on the side near the rod opening, and the output end of the feeding mechanism extends movably into the rod opening; the input end of the material moving unit is movably attached to the needle outlet.

5. The protective coating device for the surface of an electric needle according to claim 4, characterized in that: The pushing mechanism includes a vertical plate, on which a miniature electric push rod is fixedly installed horizontally on one side wall of the vertical plate near the material distribution box; one end of a pestle is connected to the output end of the miniature electric push rod, and a bell-shaped rod head is installed on the other end of the pestle; a first semi-circular groove is opened at the port of the rod head, and the end of the rod head near the first semi-circular groove extends movably into the opening of the pestle. A sight ring is slidably sleeved around the outside of the pestle, and an extension rod is fixedly installed on the sight ring. The other end of the extension rod is fixedly installed on the upright plate.

6. The protective coating device for the surface of an electric needle according to claim 1, characterized in that: The power output component includes a servo electric cylinder arranged vertically, a motor housing mounted at the bottom of the servo electric cylinder, a servo motor arranged horizontally inside the motor housing, a transmission gear connected to the output end of the servo motor, and the bottom of the transmission gear extending directly below the motor housing; the gear ring meshes with the transmission gear.

7. The protective coating device for the surface of an electric needle according to claim 6, characterized in that: The motor housing is equipped with a bearing at the bottom; the first rotating wheel is rotatably connected to the bearing, and several sets of first connecting rods are fixedly connected between the first rotating wheel and the first outer ring. The first rotating wheel is provided with an outer cover locking hole, and the outer cover is movably locked onto the outer cover locking hole; several sets of material passage grooves are distributed in a ring array around the first outer ring.

8. The protective coating device for the surface of an electric needle according to claim 1, characterized in that: The needle limiting mechanism includes a limiting cylinder with several sets of flow ports evenly distributed on the surface of the limiting cylinder. One end of the limiting cylinder has an opening, and the sealing cap is movably installed on the opening. The other end of the limiting cylinder has a second semi-circular groove.

9. The protective coating device for the surface of an electric needle according to claim 1, characterized in that: The chromium plating unit includes an electroplating tank with a top opening. The first rotating wheel extends into the electroplating tank through the top opening. The bottom of the electroplating tank has a bottom slope, with the height of the bottom slope near the top opening being lower than that of the other end. Two sets of air outlets are symmetrically arranged on the two sides of the top opening. Each of the two sets of air outlets has a fan-shaped air outlet on its opposite side wall. The input end of the air outlet is connected to the output end of the air supply device.

10. The protective coating device for the surface of an electric needle according to claim 9, characterized in that: A wave-pushing plate is fixedly installed on the side wall of the electroplating tank away from the top opening. The port cross-section of the wave-pushing plate is a fan-shaped structure, and the inner wall of the wave-pushing plate is inclined downward. Several sets of high-pressure nozzles are arranged at equal intervals along the horizontal direction on the inner wall of the wave-pushing plate. The output end of each set of high-pressure nozzles is connected to the output end of the air supply device.

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