A barrel plating device for surface treatment of automobile fasteners and a barrel plating process thereof

Abstract

The application discloses a kind of for automobile fastener surface treatment and its roll plating process, including mounting bracket and roll plating groove, mounting bracket is fixedly installed in the upper of roll plating groove, lifting cylinder is installed on the upper portion of mounting bracket, the output end of lifting cylinder is fixed seat and is set in the upper of roll plating groove through mounting bracket, two groups of side mounting seats are fixedly installed in two ends of fixed seat by connecting rod, two groups of roll plating cylinders are set between two ends of fixed seat and two groups of side mounting seats, a liquid inlet cavity is opened in fixed seat, a runner is rotatably arranged in the liquid inlet cavity, a connecting port is provided at the bottom of fixed seat and is communicated with the liquid inlet channel, two groups of shafts are symmetrically arranged at the two ends of runner, a liquid inlet circulating pipeline is correspondingly provided at the bottom of roll plating groove and below the connecting port, and a circulating pump is connected to the outer side of roll plating groove.The application has the advantages of effectively improving the plating efficiency of automobile fastener, and obtaining uniform and detailed high-quality plating layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile fastener barrel plating, and particularly relates to a barrel plating device for surface treatment of automobile fasteners and a barrel plating process thereof. BACKGROUND

[0002] The surface treatment of automobile metal parts of the company mainly involves the following parts: chassis system, the machining objects including brake calipers, control arms, steering columns, flanges, etc.; powertrain parts, the machining objects including pulleys, baffles, oil pipe joints, etc.; general standard parts, the machining products including automobile fasteners such as bolts, nuts, etc.; body parts, the machining products including four-door two-cover hinges, wire harness supports, special-shaped stamping parts, etc.

[0003] Automobile fasteners are usually surface treated by barrel plating, which effectively increases the corrosion resistance of standard parts and meets the friction coefficient requirements. The existing barrel plating device cannot realize the simultaneous movement of the plating solution and the workpiece, thereby effectively improving the overall barrel plating efficiency. SUMMARY

[0004] The purpose of the present application is to provide a barrel plating device for surface treatment of automobile fasteners and a barrel plating process thereof, which can effectively improve the plating efficiency of automobile fasteners and obtain a uniform and detailed high-quality plating layer.

[0005] The above technical purpose of the present application is realized by the following technical scheme:

[0006] A barrel plating device for surface treatment of automobile fasteners, characterized in that it comprises a mounting frame and a barrel plating tank, the mounting frame is fixedly installed above the barrel plating tank, a lifting cylinder is installed on the upper part of the mounting frame, a fixed seat is provided above the barrel plating tank through the output end of the lifting cylinder, two groups of side mounting seats are fixedly installed on the two ends of the fixed seat through connecting rods, two groups of barrel plating cylinders are arranged between the two ends of the fixed seat and the two groups of side mounting seats, the two groups of barrel plating cylinders are horizontally rotatably installed between the fixed seat and the side mounting seat, a liquid inlet cavity is formed in the fixed seat, a rotating wheel is rotatably arranged in the liquid inlet cavity, liquid inlet channels and liquid outlet channels are formed in the opposite sides of the rotating wheel, liquid outlets are arranged on the two sides of the fixed seat and communicate with the liquid outlet channels, a connecting port is arranged at the bottom of the fixed seat and communicates with the liquid inlet channel, two groups of rotating shafts are symmetrically arranged at the two ends of the rotating wheel, and the two groups of rotating shafts are fixedly connected with the barrel plating cylinders through the two ends of the fixed seat, a liquid inlet circulating pipeline is correspondingly arranged below the connecting port at the bottom of the barrel plating tank, a circulating pump is connected to the outer side of the barrel plating tank through the liquid inlet circulating pipeline, the inlet of the circulating pump is respectively connected with a plating solution pipeline and a plating solution circulating pipeline, and the plating solution circulating pipeline communicates with the upper part of the barrel plating tank.

[0007] Preferably, the two groups of the barrel plating cylinder are right frustum type, the lower bottom surface of the right frustum of the two groups of the barrel plating cylinder is connected with the fixed seat, the upper bottom surface of the barrel plating cylinder is provided with an opening, a plurality of leakage holes are arranged on the side surface and the upper bottom surface of the barrel plating cylinder, a plurality of groups of liquid outlets are arranged on the two sides of the fixed seat, and the liquid outlets are arranged in an annular array on the lower bottom surface of the barrel plating cylinder.

[0008] Preferably, the outer edges of the upper and lower bottom surfaces of the barrel plating cylinder are both sealingly provided with two groups of rotating bearings, each group of the two groups of rotating bearings of the barrel plating cylinder is movably mounted in the side mounting seat and the fixed seat, one group of the side surfaces of the barrel plating cylinder is movably connected with the rotating bearing near the upper bottom surface, and the other group of the side surfaces of the barrel plating cylinder is movably connected with the rotating bearing near the lower bottom surface.

[0009] Preferably, the two groups of the rotating shafts are connected with the inner walls at both ends of the barrel plating cylinder through a plurality of groups of connection frames arranged in a central symmetry, a driving oil cylinder is movably connected with each group of the rotating shafts, and the output end of the driving oil cylinder is movably connected with the openable and closable side surface of the barrel plating cylinder.

[0010] Preferably, the two ends of the side mounting seat are respectively and symmetrically vertically connected with a group of connection columns, the top of the connection column is movably penetrated through the mounting frame, and a limiting block is arranged above the mounting frame.

[0011] Preferably, the liquid inlet circulating pipeline is provided with a flow dividing seat below the connecting port, the side surface of the flow dividing seat is provided with an inlet in communication with the liquid inlet circulating pipeline, the upper part and the lower part of the flow dividing seat are respectively provided with an upper outlet and a lower outlet, a flow dividing cylinder is movably clamped in the upper outlet of the flow dividing seat, a through hole is arranged in the upper part of the flow dividing cylinder corresponding to the lower outlet of the side wall, a sealing ring is clamped on the upper part of the flow dividing cylinder, the upper part of the flow dividing cylinder is sealingly connected with the bottom of the connecting port through the sealing ring, and the through hole in the upper part of the flow dividing cylinder is in communication with the liquid inlet channel in the connecting port.

[0012] Preferably, a limiting convex is arranged on the inner side of the top of the flow dividing seat, a limiting groove is arranged on the outer wall of the flow dividing cylinder corresponding to the limiting convex, and a return spring is arranged above the limiting convex in the limiting groove.

[0013] Preferably, a plurality of groups of blades are arranged in an annular array in the runner, the plurality of groups of blades are all arc-shaped steel plates, and the flow directions of the plating solution in the liquid inlet channel and the liquid outlet channel are both tangent to the outer side edges of the blades.

[0014] A barrel plating process for surface treatment of automobile fasteners, characterized by comprising the following steps:

[0015] The plating solution is first introduced into the barrel plating tank through the liquid inlet circulation pipeline by the plating solution pipeline of the circulating pump, and when the liquid level of the plating solution is higher than the inlet of the plating solution circulation pipeline, the liquid inlet is stopped, and then the plating solution at the upper part of the barrel plating tank is introduced into the liquid inlet circulation pipeline at the bottom of the barrel plating tank through the plating solution circulation pipeline by the circulating pump, and the plating solution is discharged through the lower outlet of the shunt seat to perform up-down plating solution circulation.

[0016] The barrel plating cylinder is lifted to the highest stroke by the lifting air cylinder, the openable and closable side is adjusted to the top by rotating the barrel plating cylinder, and the barrel plating cylinder is opened on one side by simultaneously driving the two groups of drive oil cylinders, so that the automobile fastener is added into the barrel plating cylinder on both sides.

[0017] The barrel plating cylinder is lowered into the barrel plating tank by the lifting air cylinder, and when the connecting port at the bottom of the fixing seat contacts the upper part of the shunt cylinder and the shunt cylinder is pressed to the lowest stroke, the plating solution in the plating solution circulation pipeline enters the fixing seat through the liquid inlet circulation pipeline, sequentially passes through the liquid inlet channel, the runner in the liquid inlet cavity and the liquid outlet channel, drives the shaft coaxially connected with the runner, and the barrel plating cylinder is synchronously rotated, so that the plating solution outside the barrel plating cylinder is circulated into the barrel plating cylinder through the liquid outlet connected by the liquid outlet channel.

[0018] After the barrel plating is completed, the barrel plating cylinder is lifted to the highest stroke by the lifting air cylinder, the openable and closable side is adjusted to the bottom by rotating the barrel plating cylinder, and the barrel plating cylinder is opened on one side by simultaneously driving the two groups of drive oil cylinders, so that the automobile fastener after barrel plating can be discharged and collected.

[0019] In summary, the present application has the following beneficial effects:

[0020] The present application realizes the circulation and replacement of the plating solution inside and outside the barrel plating cylinder by the circulating pump, effectively improves the effect and efficiency of the whole barrel plating, and drives the shaft and the barrel plating cylinder to rotate by the runner rotating driven by the plating solution entering the barrel plating cylinder, so that the automobile fastener inside is rolled, the uniform barrel plating on the surface of the automobile fastener is completed, and the uneven barrel plating is avoided.

[0021] The present application is provided with two groups of symmetrical and installed positive frustum type barrel plating cylinders, and the barrel plating cylinder side with openable and closable setting is convenient for feeding and discharging, and the liquid outlets on both sides of the fixing seat are close to the lower bottom surface of the barrel plating cylinder, so that the plating solution inside the barrel plating cylinder can be timely supplemented. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the internal structure schematic diagram of the whole device in the feeding state in the embodiment of the present application;

[0023] Figure 2 is Figure 1 the structure schematic diagram of A in the embodiment of the present application;

[0024] Figure 3 is the internal structure schematic diagram of the whole device in the barrel plating state of the embodiment of the application;

[0025] Figure 4 is Figure 3 the structure schematic diagram of A-A in the embodiment of the application;

[0026] Figure 5 is Figure 3 the structure schematic diagram of B-B in the embodiment of the application;

[0027] Figure 6 is Figure 3 the structure schematic diagram of C in the embodiment of the application;

[0028] Figure 7 is the internal structure schematic diagram of the whole device in the discharging state of the embodiment of the application;

[0029] Figure 8 is the external connection structure schematic diagram of the barrel plating cylinder in the embodiment of the application;

[0030] Figure 9 is the barrel plating cylinder connection structure side view in the embodiment of the application;

[0031] Figure 10 is the internal structure schematic diagram of the fixed seat in the embodiment of the application. DETAILED DESCRIPTION

[0032] The specific embodiments of the application are further described below in conjunction with the accompanying drawings, and the embodiments do not constitute a limitation on the application.

[0033] As Figures 1 to 10As shown, a kind of for the surface treatment of automobile fastener barrel plating device, including mounting bracket 1 with barrel plating groove 2, mounting bracket 1 is fixedly installed in the upper of barrel plating groove 2, lifting cylinder 3 is installed on the upper portion of mounting bracket 1, the output end of lifting cylinder 3 is through mounting bracket 1 and is provided with fixed seat 4 in the upper of barrel plating groove 2, two groups of side mounting seat 5 are fixedly installed in the both ends of fixed seat 4 by connecting rod 31, two groups of barrel plating cylinder 6 are set between the both ends of fixed seat 4 and two groups of side mounting seat 5, and two groups of barrel plating cylinder 6 are horizontally rotatably installed between fixed seat 4 and side mounting seat 5, fixed seat 4 is provided with one liquid inlet cavity 7, one runner 8 is rotatably arranged in liquid inlet cavity 7, liquid inlet passage 9 and liquid outlet passage 10 are formed in the opposite sides of runner 8 in liquid inlet cavity 7, liquid outlet 11 is formed in the both sides of fixed seat 4 and is communicated with liquid outlet passage 10, connecting port 12 is formed in the bottom of fixed seat 4 and is communicated with liquid inlet passage 9, two groups of shafts 13 are symmetrically arranged in the both ends of runner 8, and the both ends of two groups of shafts 13 are fixedly connected with barrel plating cylinder 6 by penetrating the both ends of fixed seat 4, one liquid inlet circulating pipeline 14 is correspondingly arranged in the bottom of barrel plating groove 2 and below connecting port 12, one circulating pump 15 is connected with barrel plating groove 2 outside by liquid inlet circulating pipeline 14, the inlet of circulating pump 15 is respectively communicated with plating solution pipeline 16 and plating solution circulating pipeline 17, and plating solution circulating pipeline 17 is communicated with the upper portion of barrel plating groove 2.

[0034] The lower bottom surface of two groups of barrel plating cylinder 6 is connected with fixed seat 4, the upper bottom surface of barrel plating cylinder 6 is provided with an opening, a plurality of leakage holes 18 are formed in the side surface and upper bottom surface of barrel plating cylinder 6, a plurality of groups of liquid outlets 11 are formed in the both sides of fixed seat 4 and are arranged in the lower bottom surface of barrel plating cylinder 6 in annular array, a part of plating solution enters barrel plating cylinder 6 through leakage holes 18 to perform surface treatment on automobile fastener, and another part of plating solution is circulated to enter barrel plating cylinder 6 through liquid outlet 11, so as to ensure the quality of plating solution in barrel plating cylinder 6.

[0035] The outer edges of the upper and lower bottom surfaces of barrel plating cylinder 6 are both sealed and provided with two groups of rotating bearings 19, and the two groups of rotating bearings 19 of each group of barrel plating cylinder 6 are movably installed in side mounting seat 5 and fixed seat 4, respectively, one group of side surfaces of barrel plating cylinder 6 close to the upper bottom surface is movably hinged with rotating bearing 19, and the side surface close to the lower bottom surface is arranged to be openable and closable with rotating bearing 19, and the synchronous rotation of two groups of barrel plating cylinder 6 can be realized through shaft 13.

[0036] The both ends of two groups of shafts 13 are connected with the inner walls of barrel plating cylinder 6 through a plurality of groups of connection frames 20 arranged in central symmetry, and a driving oil cylinder 21 is movably hinged on each group of shafts 13, the output end of driving oil cylinder 21 is movably hinged with the openable and closable side surface of barrel plating cylinder 6, driving oil cylinder 21 realizes the opening of the openable and closable side surface, so as to complete feeding and discharging.

[0037] The side mounting seat 5 is vertically connected with a group of connecting columns 22 at both ends, the top of the connecting column 22 is movably penetrated through the mounting frame 1 and is provided with a limiting block 23 above the mounting frame 1, and the whole can be stably lifted through the cooperation of the two groups of connecting columns 22 and the lifting cylinder 3.

[0038] The liquid inlet circulating pipeline 14 is provided with a flow dividing seat 24 below the connecting port 12, the side of the flow dividing seat 24 is provided with an inlet in communication with the liquid inlet circulating pipeline 14, the upper part and the lower part of the flow dividing seat 24 are respectively provided with an upper outlet and a lower outlet, the flow dividing seat 24 is movably clamped with a flow dividing cylinder 25 in the upper outlet, the upper part of the flow dividing cylinder 25 is provided with a through hole corresponding to the lower outlet of the side wall, the upper part of the flow dividing cylinder 25 is clamped with a sealing ring 26, the upper part of the flow dividing cylinder 25 is sealingly connected with the bottom of the connecting port 12 through the sealing ring 26, and the through hole in the upper part of the flow dividing cylinder 25 is in communication with the liquid inlet channel 9 in the connecting port 12.

[0039] The top inside of the flow dividing seat 24 is provided with a limiting convex 27, the outer wall of the flow dividing cylinder 25 is provided with a limiting groove 28 corresponding to the limiting convex 27, and the limiting groove 28 is provided with a return spring 29 above the limiting convex 27, so that the flow dividing cylinder 25 can be upwardly returned to close the upper outlet and realize the communication between the lower outlet and the liquid inlet circulating pipeline 14 under the non-pressing state of the connecting port 12, and the lower outlet is closed and the communication between the upper outlet and the liquid inlet circulating pipeline 14 is realized when the flow dividing cylinder 25 is pressed to the bottom of the flow dividing seat 24.

[0040] A plurality of groups of blades 30 are arranged in an annular array in the runner 8, the plurality of groups of blades 30 are all arc-shaped steel plates, the flow directions of the liquid in the liquid inlet channel 9 and the liquid outlet channel 10 are all tangent to the outer side of the blade 30, and the liquid can effectively drive the runner 8 to rotate.

[0041] A barrel plating process for surface treatment of automobile fasteners, comprising the following steps:

[0042] The plating liquid is first introduced into the barrel plating tank 2 through the liquid inlet circulating pipeline 14 by the plating liquid pipeline 16 of the circulating pump 15, the liquid inlet is stopped when the liquid level of the plating liquid is higher than the inlet of the plating liquid circulating pipeline 17, and then the plating liquid at the upper part of the barrel plating tank 2 is introduced into the liquid inlet circulating pipeline 14 at the bottom of the barrel plating tank 2 through the plating liquid circulating pipeline 17 by the circulating pump 15, the plating liquid is discharged through the lower outlet of the flow dividing seat 24, and the up-and-down plating liquid circulation is performed.

[0043] The barrel plating cylinder 6 is lifted to the highest stroke by the lifting cylinder 3, the openable and closable one side of the barrel plating cylinder 6 is adjusted to the top by rotating the barrel plating cylinder 6, one side of the barrel plating cylinder 6 is opened upward by simultaneously driving the two groups of drive oil cylinders 21, and then the automobile fasteners are added into the barrel plating cylinder 6 on both sides, and one side of the barrel plating cylinder 6 is closed by driving the two groups of drive oil cylinders 21 after the addition is completed.

[0044] The plating solution in the plating solution circulating pipeline 17 enters the fixed seat 4 through the inlet liquid circulating pipeline 14 after the connecting port 12 at the bottom of the fixed seat 4 contacts the upper part of the shunt cylinder 25 and the shunt cylinder 25 is pressed to the lowest stroke, and then sequentially passes through the inlet liquid channel 9, the rotating wheel 8 in the inlet liquid cavity 7 and the outlet liquid channel 10, drives the rotating shaft 13 coaxially connected with the rotating wheel 8, and the barrel plating cylinder 6 rotates synchronously, and the plating solution outside the barrel plating cylinder 6 enters the barrel plating cylinder 6 through the outlet liquid port 11 connected by the outlet liquid channel 10.

[0045] After barrel plating is completed, the barrel plating cylinder 6 is lifted to the highest stroke by the lifting cylinder 3, the openable and closable one side is adjusted to the bottom by rotating the barrel plating cylinder 6, and the barrel plating cylinder 6 is opened downward on one side by simultaneously driving the two groups of drive oil cylinders 21, so that the discharge and collection of the automobile fastener after barrel plating are completed.

[0046] The present application realizes the circulation and replacement of the plating solution inside and outside the barrel plating cylinder through the circulating pump, effectively improves the effect and efficiency of the whole barrel plating, and drives the rotating shaft and the barrel plating cylinder to rotate by the plating solution entering the barrel plating cylinder to drive the rotating wheel to rotate, so that the internal automobile fastener is rolled, the uniform barrel plating on the surface of the automobile fastener is completed, and the uneven barrel plating is avoided.

[0047] The present application realizes the circulation and replacement of the plating solution inside and outside the barrel plating cylinder through the circulating pump, effectively improves the effect and efficiency of the whole barrel plating, and drives the rotating shaft and the barrel plating cylinder to rotate by the plating solution entering the barrel plating cylinder to drive the rotating wheel to rotate, so that the internal automobile fastener is rolled, the uniform barrel plating on the surface of the automobile fastener is completed, and the uneven barrel plating is avoided.

[0048] The above is only a preferred embodiment of the present application and is not used to limit the present application, and those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and the modification or equivalent replacement should also be regarded as falling within the protection scope of the technical scheme of the present application.

Claims

1. A barrel plating apparatus for surface treatment of automotive fasteners, characterized in that, The system includes a mounting frame and a barrel plating tank. The mounting frame is fixedly installed above the barrel plating tank. A lifting cylinder is mounted on the upper part of the mounting frame. The output end of the lifting cylinder passes through the mounting frame and is positioned above the barrel plating tank with a fixed base. Two sets of side mounting seats are fixedly installed at both ends of the fixed base via connecting rods. Two sets of barrel plating cylinders are positioned between the two ends of the fixed base and the two sets of side mounting seats. The two sets of barrel plating cylinders are horizontally rotatably installed between the fixed base and the side mounting seats. The fixed base has a liquid inlet chamber, and a rotating wheel is rotatably installed inside the liquid inlet chamber, opposite to the rotating wheel. The device has inlet and outlet channels on both sides. The fixed base has outlets on both sides that are connected to the outlet channels. The bottom of the fixed base has a connection port that is connected to the inlet channel. Two sets of rotating shafts are symmetrically arranged at both ends of the rotating wheel. The two sets of rotating shafts pass through both ends of the fixed base and are fixedly connected to the barrel plating tank. A liquid inlet circulation pipe is arranged at the bottom of the barrel plating tank directly below the connection port. A circulation pump is connected to the outside of the barrel plating tank. The inlet of the circulation pump is connected to a plating solution pipe and a plating solution circulation pipe. The plating solution circulation pipe is connected to the upper part of the barrel plating tank. The two sets of barrel plating cylinders are in the shape of a regular truncated pyramid. The lower bottom surface of the regular truncated pyramid of the two sets of barrel plating cylinders is connected to the fixed base. The upper bottom surface of the barrel plating cylinder is provided with an opening. Multiple leakage holes are provided on the side surface and the upper bottom surface of the barrel plating cylinder. Multiple sets of liquid outlets are provided on both sides of the fixed base and arranged in a ring array inside the lower bottom surface of the barrel plating cylinder. The upper and lower bottom surfaces of the barrel plating cylinder are each sealed with two sets of rotating bearings. The two sets of rotating bearings of each barrel plating cylinder are respectively movably installed in the side mounting seat and the fixed seat. One set of side surfaces of the barrel plating cylinder is movably hinged to the rotating bearing near the upper bottom surface, and is openable and closable near the lower bottom surface. Both sets of rotating shafts are connected to the inner walls of both ends of the barrel plating cylinder through multiple sets of connecting frames arranged symmetrically at the center. Each set of rotating shafts is movably hinged to a driving cylinder, and the output end of the driving cylinder is movably hinged to the openable side of the barrel plating cylinder. A diverter seat is provided directly below the connection port of the liquid inlet circulation pipe. The diverter seat has an inlet on its side that communicates with the liquid inlet circulation pipe. The upper and lower parts of the diverter seat are respectively provided with an upper outlet and a lower outlet. A diverter cylinder is movably mounted inside the upper outlet of the diverter seat. A through hole is opened on the upper part of the diverter cylinder and the side wall corresponding to the lower outlet. A sealing ring is mounted on the upper part of the diverter cylinder. The upper part of the diverter cylinder is sealed to the bottom of the connection port through the sealing ring. The through hole on the upper part of the diverter cylinder communicates with the liquid inlet channel inside the connection port.

2. The barrel plating apparatus for surface treatment of automotive fasteners according to claim 1, characterized in that: The side mounting base is symmetrically and vertically connected to a set of connecting columns at both ends. The top of the connecting columns can be moved through the mounting frame and a limit stop is provided above the mounting frame.

3. The barrel plating apparatus for surface treatment of automotive fasteners according to claim 1, characterized in that: A limiting protrusion is provided on the inner side of the top of the flow divider seat, and a limiting groove is provided on the outer wall of the flow divider corresponding to the limiting protrusion. A return spring is provided in the limiting groove above the limiting protrusion.

4. The barrel plating apparatus for surface treatment of automotive fasteners according to claim 1, characterized in that: The rotor has multiple sets of blades arranged in a ring array. All sets of blades are arc-shaped steel plates. The flow direction of the plating solution in the liquid inlet channel and the liquid outlet channel is tangent to the outer edge of the blades.

5. A barrel plating process for surface treatment of automotive fasteners according to any one of claims 1-4, characterized in that: Includes the following steps: The plating solution is first introduced into the barrel plating tank through the inlet circulation pipe via the circulating pump. When the plating solution level is higher than the inlet of the plating solution circulation pipe, the inlet is stopped. Subsequently, the plating solution in the upper part of the barrel plating tank is introduced into the inlet circulation pipe at the bottom of the barrel plating tank through the circulating pump via the circulating pump. The plating solution is discharged through the lower outlet of the distributor seat, thus circulating the plating solution between the upper and lower parts. The barrel plating cylinder is raised to its highest stroke by lifting cylinder, and the openable side of the barrel plating cylinder is adjusted to the top by rotating the barrel plating cylinder. The barrel plating cylinder is opened upward by driving two sets of drive cylinders at the same time, so that the car fasteners can be added into the barrel plating cylinders on both sides. After the addition is completed, the barrel plating cylinder is closed by driving two sets of drive cylinders. The barrel plating cylinder is lowered into the barrel plating tank by a lifting cylinder. After the connection port at the bottom of the fixed base contacts the top of the distribution cylinder and the distribution cylinder is pressed down to the lowest stroke, the plating solution in the plating solution circulation pipe passes through the inlet circulation pipe and switches to the upper outlet of the distribution base to enter the fixed base. It then passes through the inlet channel, the rotating wheel in the inlet chamber and the outlet channel in sequence, driving the rotating shaft coaxially connected to the rotating wheel. The barrel plating cylinder rotates synchronously, and the plating solution outside the barrel plating cylinder circulates into the barrel plating cylinder through the outlet port connected to the outlet channel. After barrel plating is completed, the barrel plating cylinder is raised to its highest stroke by the lifting cylinder. The barrel plating cylinder is rotated to adjust the openable side to the bottom. By simultaneously driving two sets of drive cylinders, one side of the barrel plating cylinder is opened downwards, thus completing the discharge and collection of the barrel-plated automotive fasteners.

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