CN112593274B - Barrel plating device for hardware used in matching mode and working method of barrel plating device - Google Patents
Barrel plating device for hardware used in matching mode and working method of barrel plating device Download PDFInfo
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- CN112593274B CN112593274B CN202011363221.7A CN202011363221A CN112593274B CN 112593274 B CN112593274 B CN 112593274B CN 202011363221 A CN202011363221 A CN 202011363221A CN 112593274 B CN112593274 B CN 112593274B
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- roller
- electroplating
- telescopic arm
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/16—Apparatus for electrolytic coating of small objects in bulk
- C25D17/18—Apparatus for electrolytic coating of small objects in bulk having closed containers
- C25D17/20—Horizontal barrels
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/10—Agitating of electrolytes; Moving of racks
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- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a barrel plating device for hardware used in a matched manner, which comprises a plating bath, a roller positioned in the plating bath, a power supply used for electrifying plating solution in the plating bath and a driving part used for driving the roller; the insulating second roller is arranged in the roller, the axial lead of the roller is parallel to the axial lead of the second roller, and the main body part of the second roller is of a grid hollow structure; the second roller is fixed on the lower half side of the roller through the suspension arm assembly, and a second electroplating part in the second roller is communicated with the first electroplating part in the roller through an electric lead; the second roller is provided with an end cover with at least one side capable of being opened, and the suspension arm assembly is made of an insulating material. The barrel plating device for the hardware used in a matched mode is provided with the internal roller and the self-driven second roller, so that the rollers are independent according to the rolling efficiency requirements of parts to be plated of different sizes, and the parts of all sizes have good inner and outer rolling efficiency in the same electroplating environment.
Description
Technical Field
The invention relates to the field of electroplating, in particular to a barrel plating device for hardware used in a matched manner and a working method thereof.
Background
The hardware used in cooperation comprises small-sized hardware such as buttons, zippers, trousers hooks and belt buckles, electroplating of the hardware is usually realized by a barrel plating process, and the existing barrel plating comprises horizontal barrel plating, inclined barrel plating and vibration barrel plating.
As shown in fig. 1, the horizontal barrel plating equipment includes a barrel 1 disposed in a plating bath, a cathode conductor 111 disposed in the barrel 1, the cathode conductor is usually a copper wire coated with an insulating layer, one end of the cathode conductor has a conductive terminal and contacts with a part to be plated, a diversion hole for convection of a plating solution is disposed on the barrel 1, an anode 112 of a power supply 11 is immersed in the plating solution in the plating bath, and a cathode of the power supply 11 is connected with the cathode conductor 111 of the barrel. Horizontal barrel plating is often applied to electroplating of small-size hardware, small parts subjected to pre-plating treatment are loaded into the roller, and the parts tightly press the cathode conductor 111 in the roller 1 under the action of self gravity, so that current required by the parts subjected to plating can be smoothly transmitted. Then, the roller 1 rotates at a certain speed and in a certain direction, and the parts roll and fall continuously after being subjected to the rotating action in the roller 1. Meanwhile, main metal ions are reduced to a metal coating on the surface of the part after being acted by an electric field, fresh solution outside the roller 1 is continuously supplemented into the roller 1 through countless small holes on a wall plate of the roller, and old solution in the roller 1 and gas generated in the electroplating process are exhausted out of the roller through the small holes.
At present, horizontal barrel plating is often adopted for the electroplating of the matched hardware, and the matched hardware has different sizes and quantities, for example, a slide fastener used in combination includes a slider and fastener elements, the size of the elements is smaller than that of the slider, but the number of the elements is larger than that of the slider, and if they are mixedly placed in a drum, because of different sizes and different electroplating quantities, on one hand, the stacking density of the hardware to be electroplated in the roller is different, as shown in fig. 2, the slider 12 in the roller 1 has a large volume but a small number, the fastener elements 13 have a small volume but a large number, therefore, the zipper head with a small number of electroplating tumbling times and a large volume is often sunk into the zipper teeth 13 with a large number and a small volume for a long time to be shielded by static electricity, the zipper head 12 cannot obtain good tumbling efficiency, and the electroplating effect of the zipper head 12 is poor. The difference of electroplating thickness and electroplating effect can be caused to the current density difference that flows through each electroplated part surface promptly, and on the other hand, when the hardware of treating electroplating that the size is different was rolled along with the cylinder in step, the hardware of treating electroplating of different sizes can not be synchronous inside and outside alternately and roll, leads to electroplating effect difference great. And the dividing work of hardware after the mixed placement and the electroplating is finished is time-consuming and labor-consuming. In addition, the hardware which is matched with different sizes and used is separately electroplated through two procedures, so that the difference of electroplating environments such as electroplating solution concentration and the like is caused, the electroplating difference of the hardware which is matched with the sizes and used is caused, and the electroplating efficiency is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of improving the electroplating effect of hardware with different sizes which is used in a matching way.
The invention provides a barrel plating device for hardware used in a matched manner, which comprises a plating bath, a roller positioned in the plating bath, a power supply used for electrifying electroplating solution in the plating bath and a driving part used for driving the roller; the insulating second roller is arranged in the roller, the axial lead of the roller is parallel to the axial lead of the second roller, and the main body part of the second roller is of a grid hollow structure;
the second roller is fixed on the lower half side of the roller through a suspension arm component, the suspension arm component comprises a central shaft and a telescopic arm, the upper end of the telescopic arm is connected with the central shaft, the central shaft can not rotate along with the rotation of the roller, the telescopic arm comprises a first telescopic arm and a second telescopic arm, a first rotating shaft transversely extends from the lower end of the first telescopic arm, a driving motor is arranged at the lower end of the second telescopic arm, a second bearing and a second rotating shaft are respectively arranged on end covers on two sides of the second roller, the first rotating shaft is rotatably connected with the second bearing, and a driving shaft of the driving motor is rotatably connected with the second rotating shaft through a coupler;
the second electroplating part in the second roller is communicated with the first electroplating part in the roller through an electric lead;
the second roller is provided with an end cover with at least one side capable of being opened, and the suspension arm assembly is made of an insulating material.
Furthermore, the wall of the second drum is provided with a stirring blade, the telescopic arm is arranged to enable the stirring blade to be in contact with a first electroplating part in the drum by stretching the length of the telescopic arm, the stirring blade is provided with an electric lead which is coated with an insulating material and has two ends conducting, the first end of the electric lead can be in contact with a second electroplating part in the second drum, the second end of the electric lead can be in contact with the first electroplating part in the drum, and the stirring blade is made of the insulating material;
furthermore, the central shaft is a fixed shaft, and the roller is connected with the central shaft through a first bearing.
Furthermore, the central shaft is a hollow shaft, and through holes communicated with openings at two ends of the central shaft are formed in the shaft wall of the central shaft.
Further, the upper end of the telescopic arm and the central shaft are connected through a shaft buckle, and the shaft buckle can enable the telescopic arm to slide along the central shaft.
Furthermore, flexible arm is including the upper segment pipe and the lower segment pipe that slip each other and cup joint, and upper segment pipe and lower segment pipe compress tightly fixedly through fastening bolt.
Further, stirring vane is along the circumference evenly distributed of section of thick bamboo wall, and stirring vane's main part is along the radial extension of second cylinder, and stirring vane is rectangular blade, and stirring vane's number is 4 at least, and each stirring vane size is the same.
Further, one side of the end cover is hinged with the main body part of the second roller, and the other side of the end cover is connected with the main body part of the second roller through a pressing type buckle.
The invention also discloses a working method of the barrel plating device for the matched hardware, which comprises the following steps:
step 2, vertically clamping the telescopic arm to a central shaft, sliding the telescopic arm along the central shaft, so that the first rotating shaft and the second bearing are rotatably connected, and rotatably connecting a driving shaft of a driving motor and the second rotating shaft through a coupler; adjusting the length of the telescopic arm to enable at least 1 stirring blade to be in contact with the first electroplating part;
step 3, setting the rotating speed of a driving part and a driving motor of the roller according to the rolling efficiency required by the first electroplating part and the second electroplating part;
and 4, injecting the electroplating solution into the electroplating bath so as to enable the electroplating solution to immerse the second electroplating part in the second roller, and starting the device to start electroplating.
Further, the length of the telescopic arm is adjusted, so that at least 2 stirring blades can contact the first electroplated part.
The invention has the following beneficial effects:
1. the barrel plating device for the hardware used in a matched mode is provided with the internal roller and the self-driven second roller, so that the rollers are independent according to the rolling efficiency requirements of parts to be plated of different sizes, and the parts of all sizes have good inner and outer rolling efficiency in the same electroplating environment.
2. The roller device disclosed by the invention avoids the splitting work after mixed electroplating by arranging the detachable second roller.
3. The invention reduces the matched electroplating process of parts with different sizes, improves the efficiency, and avoids the waste of electroplating solution and energy, thereby being more environment-friendly.
4. According to the invention, the stirring blades are arranged on the second drum, so that on one hand, a driving force is provided for the second drum, and on the other hand, the first electroplated part in the drum can obtain better inner and outer rolling efficiency.
Drawings
Fig. 1 is a schematic structural view of a conventional barrel plating apparatus.
Fig. 2 is a schematic structural diagram of a side view of a drum when the barrel plating apparatus of fig. 1 is loaded with parts of different sizes.
Fig. 3 is a schematic structural diagram of a barrel plating device for hardware used in cooperation with the barrel plating device.
FIG. 4 is a schematic view of the connection structure of the boom assembly and the second roller of the barrel plating device for the matched hardware.
Fig. 5 is a side view of the structure of fig. 4.
FIG. 6 is a schematic view of a connection structure of a telescopic arm and a second roller of the barrel plating device for hardware used with the barrel plating device.
FIG. 7 is a partial schematic view of the end cap of the second barrel of the barrel plating apparatus for hardware used therewith.
Fig. 8 is a partial structural schematic diagram of a telescopic arm of the barrel plating device for the matched hardware.
Fig. 9 is a side view structural schematic diagram of a second roller of the barrel plating device for the matched hardware.
In the figure, a drum 1, a power supply 11, a cathode conductor 111, an anode 112, a zipper head 12, a second plating part 121, a zipper tooth 13, a first plating part 131, a driving part 14, a second drum 15, a second bearing 151, an end cover 152, a stirring blade 153, a second rotating shaft 154, an electric lead 1531, a central shaft 161, a through hole 1611, a second through hole 1612, a telescopic arm 162, a shaft fastener 1621, a first rotating shaft 1622, an upper pipe 1623, a lower pipe 1624, a fastening bolt 1625, a driving shaft 1626 and a coupling 1627.
Detailed Description
The invention is described in further detail below with reference to the data in conjunction with the figures. It should be understood that the embodiments are merely illustrative of the present invention and do not limit the scope of the invention in any way.
As shown in FIG. 3, the barrel plating device for hardware used in cooperation comprises a plating bath, a roller 1 positioned in the plating bath, a power supply 11 for electrifying the plating solution in the plating bath and a driving part 14 for driving the roller 1,
an insulated second roller 15 is arranged in the roller 1, the axial lines of the roller 1 and the second roller 15 are parallel, the main body part of the second roller 15 is of a grid hollow structure, and a person skilled in the art can adjust the grid size of the grid hollow structure according to a second electroplating part 121 positioned in the second roller 15 so that the second electroplating part 121 cannot be separated from the side wall of the second roller 15; so that the plating solution in the drum 1 enters the second drum 15 through the mesh and contacts the second plated part 121 located in the second drum 15.
The second drum 15 is able to rotate without rotation of the drum 1, i.e. in this embodiment the second drum 15 is fixed to the lower half of the drum 1 by a boom assembly comprising a central shaft 161 and a telescopic arm 162; the central shaft 161 can rotate without following the rotation of the drum 1, wherein the central shaft 161 is a fixed shaft, and the drum 1 is connected with the central shaft 161 through a first bearing, that is, the driving mechanism drives the drum 1 to rotate around the central shaft 161. In this embodiment, the central shaft 161 is a hollow shaft, and the wall of the central shaft 161 is provided with a through hole 1611 communicating with openings at both ends of the central shaft 161, and the through hole 1611 allows the conductive terminal of the cathode conductor 111 connected to the power source 11 to penetrate through the opening at one end of the central shaft 161, enter the inside of the drum 1 from the through hole 1611, and contact the first plating part 131, while the cathode conductor 111 does not rotate with the rotation of the drum 1.
As shown in fig. 4-6, the upper end of the telescoping arm 162 and the central shaft 161 are removably connected, in this embodiment the upper end of the telescoping arm 162 and the central shaft 161 are connected by a shaft snap 1621. The shaft catch 1621 allows the telescopic arm 162 to slide along the central shaft 161, and the shaft catch 1621 is elastically deformable to a certain extent, so that the telescopic arm 162 can be detached from the central shaft 161.
The lower end of the telescopic arm 162 is rotatably connected with the end cover 152 of the second roller 15, in this embodiment, the telescopic arm 162 includes a first telescopic arm and a second telescopic arm, the lower end of the first telescopic arm extends transversely with a first rotating shaft 1622, the lower end of the second telescopic arm is provided with a driving motor, that is, the driving motor is hermetically sealed in a cavity at the lower end of the second telescopic arm, the end covers 152 at two sides of the second roller 15 are respectively provided with a second bearing 151 and a second rotating shaft 154, the first rotating shaft 1622 and the second bearing 151 are rotatably connected, and a driving shaft 1626 of the driving motor and the second rotating shaft 154 are rotatably connected through a coupling 1627; the second drum 15 is provided with an end cover 152 having at least one side opened. As shown in fig. 7, in this embodiment, one side of the end cap 152 is hinged to the main body of the second roller 15, and the other side of the end cap 152 is connected to the main body of the second roller 15 by a press-type snap. In this embodiment, the central shaft 161 further has a second through hole 1612, and the second through hole 1612 is used for allowing a power line of the driving motor to penetrate through one end opening of the central shaft 161 and enter the interior of the drum 1 from the second through hole 1612 and be connected with the driving motor
The wall of the second drum 15 is provided with a stirring blade 153, and the telescopic arm 162 is arranged to be able to contact the stirring blade 153 with the first electroplated part 131 in the drum 1 by extending and contracting its length, as shown in fig. 8, in this embodiment, the telescopic arm 162 includes an upper pipe 1623 and a lower pipe 1624 which are slidably sleeved with each other, and the upper pipe 1623 and the lower pipe 1624 are fixed by a fastening bolt 1625.
In this embodiment, the boom assembly and the blending blade 153 are both made of an insulating material.
As will be appreciated by those skilled in the art, the non-conductive components of the barrel plating apparatus that are capable of contacting the plating solution should be insulating to prevent oxidation and reduction by the plating solution.
As shown in fig. 4 and 9, the stirring blades 153 are arranged to stir the first plated part 131 while the second drum 15 is rotating, i.e., the stirring blades 153 are evenly distributed along the circumferential direction of the drum wall, and the bodies of the stirring blades 153 extend in the radial direction of the second drum 15. The stirring blades 153 are rectangular blades, the number of the stirring blades 153 is at least 4, and the sizes of the stirring blades 153 are the same. That is, the agitating blade 153 is provided as a non-propelling type agitating blade, and the second drum 15 is parallel to the axis line of the drum 1, thereby preventing the first plated parts 131 in the drum 1 from being concentrated from one side of the agitating blade 153 to the other side.
Second plated part 121 in second barrel 15 and first plated part 131 in barrel 1 communicate via electrical lead 1531; in this embodiment, stirring blade 153 is provided with an electrical lead 1531 coated with an insulating material and having two ends electrically conductive, a first end of electrical lead 1531 being capable of contacting second plated part 121 located within second barrel 15, and a second end of electrical lead 1531 being capable of contacting first plated part 131 located within barrel 1, in one embodiment, electrical lead 1531 is integrated into stirring blade 153.
During barrel plating, the main metal ions are actually reduced only on the surface of the surface part to form a metal plating layer, and the inner part is shielded and shielded by the surface part, so that only current passes through the inner part, but almost no electrochemical reaction occurs. Therefore, in order to be plated at an opportunity, the inner layer components need to be turned out from the inside of the stack to become the surface layer components. The surface parts cannot stay for a long time, and the surface parts become the inner parts after being electroplated for a while under the rotating action of the roller 1. Therefore, the small parts can promote the inner layer parts and the surface layer parts to be changed and converted continuously only by continuously rolling, and finally, the probability that each part is uniformly plated is ensured. The invention enables the parts which are used in a matched way and have different sizes to be electroplated in the same electroplating environment by arranging the self-driven second roller 151, and sets the rotating speeds of the driving part 14 and the driving motor of the roller 1 according to the rolling efficiency required by the first electroplating part 131 and the second electroplating part 121; further reducing the electroplating difference of the matched electroplated parts and the electroplating difference caused by the difference of the electroplating solution and the electroplating environment when the parts with different sizes are electroplated in batches.
The invention also discloses a working method of the barrel plating device for the matched hardware, which is characterized by comprising the following steps:
step 2, vertically clamping the telescopic arm to a central shaft, sliding the telescopic arm along the central shaft, so that the first rotating shaft and the second bearing are rotatably connected, and rotatably connecting a driving shaft of a driving motor and the second rotating shaft through a coupler; adjusting the length of the telescopic arm to enable at least 1 stirring blade to be in contact with the first electroplating part;
step 3, setting the rotating speed of a driving part and a driving motor of the roller according to the rolling efficiency required by the first electroplating part and the second electroplating part;
and 4, injecting the electroplating solution into the electroplating bath so as to enable the electroplating solution to immerse the second electroplating part in the second roller, and starting the device to start electroplating.
In one embodiment, the length of the telescopic arm is adjusted so that at least 2 stirring blades can contact the first plated part. Because stirring vane evenly distributed to make the electric lead can communicate first electroplating part and second electroplating part all the time.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A barrel plating device for hardware used in a matched mode comprises a plating bath, a rotary drum positioned in the plating bath, a power supply used for electrifying electroplating liquid in the plating bath and a driving portion used for driving the rotary drum; the roller is characterized in that an insulated second roller is arranged in the roller, the axial leads of the roller and the second roller are parallel, and the main body part of the second roller is of a grid hollow structure;
the second roller is fixed on the lower half side of the roller through a suspension arm assembly, the suspension arm assembly comprises a central shaft and a telescopic arm, the central shaft can not rotate along with the rotation of the roller, the upper end of the telescopic arm is connected with the central shaft, the telescopic arm comprises a first telescopic arm and a second telescopic arm, the lower end of the first telescopic arm transversely extends to form a first rotating shaft, the lower end of the second telescopic arm is provided with a driving motor, two side end covers of the second roller are respectively provided with a second bearing and a second rotating shaft, the first rotating shaft and the second bearing are rotatably connected, and a driving shaft of the driving motor is rotatably connected with the second rotating shaft through a coupler;
the second electroplating part in the second roller is communicated with the first electroplating part in the roller through an electric lead;
the second roller is provided with an end cover with at least one side capable of being opened, and the suspension arm assembly is made of an insulating material;
the section of thick bamboo wall of second cylinder is provided with stirring vane, flexible arm is set up to make through its length of stretching out and drawing back stirring vane with the contact of the first part of electroplating in the cylinder, it is electrically conductive and both ends to be provided with cladding insulating material on the stirring vane the electric wire, the first end of electric wire can with be located the contact of the second part of electroplating in the second cylinder, the second end of electric wire can with be located the contact of the first part of electroplating in the cylinder, stirring vane's material is insulating material.
2. The barrel plating device for hardware used in cooperation according to claim 1, wherein the central shaft is a fixed shaft, and the drum is connected with the central shaft through a first bearing.
3. The barrel plating device for the matched hardware, according to claim 1, characterized in that the central shaft is a hollow shaft, and through holes communicated with openings at two ends of the central shaft are arranged on the shaft wall of the central shaft.
4. A barrel plating apparatus for hardware for use therewith, according to claim 1, wherein the upper end of the telescopic arm and the central shaft are connected by a shaft catch which enables the telescopic arm to slide along the central shaft.
5. The barrel plating device for the matched hardware, according to claim 1, characterized in that the telescopic arm comprises an upper section pipe and a lower section pipe which are slidably sleeved with each other, and the upper section pipe and the lower section pipe are tightly pressed and fixed through a fastening bolt.
6. The barrel plating device for the matched hardware, according to claim 1, characterized in that the stirring blades are uniformly distributed along the circumferential direction of the barrel wall, the main bodies of the stirring blades extend along the radial direction of the second roller, the stirring blades are rectangular blades, the number of the stirring blades is at least 4, and the sizes of the stirring blades are the same.
7. The barrel plating device for hardware used in cooperation with the barrel plating device of claim 1, wherein one side of the end cover is hinged with the main body part of the second roller, and the other side of the end cover is connected with the main body part of the second roller through a pressing type buckle.
8. The method of operating a barrel plating apparatus for hardware for use therewith as claimed in claim 1, comprising the steps of:
step 1, throwing the first electroplating part into the roller, flatly paving the first electroplating part at the bottom of the roller, and throwing the second electroplating part into the second roller;
step 2, vertically clamping the telescopic arm to the central shaft, sliding the telescopic arm along the central shaft, so that the first rotating shaft and the second bearing are rotatably connected, and rotatably connecting a driving shaft of the driving motor and the second rotating shaft through a coupler; adjusting the length of the telescopic arm to enable at least 1 stirring blade to be in contact with the first electroplated part;
step 3, setting the rotation speed of a driving part of the roller and the rotation speed of the driving motor according to the rolling efficiency required by the first electroplating part and the second electroplating part;
and 4, injecting a plating solution into the plating tank so that the plating solution submerges the second plated part in the second roller, and starting a device to start plating.
9. The method of claim 8, wherein the length of the telescoping arm is adjusted to allow at least 2 of said stirring blades to contact said first plated part.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011363221.7A CN112593274B (en) | 2020-11-28 | 2020-11-28 | Barrel plating device for hardware used in matching mode and working method of barrel plating device |
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| CN202011363221.7A CN112593274B (en) | 2020-11-28 | 2020-11-28 | Barrel plating device for hardware used in matching mode and working method of barrel plating device |
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| CN112593274B true CN112593274B (en) | 2022-02-08 |
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| CN113279042A (en) * | 2021-05-24 | 2021-08-20 | 广东风华高新科技股份有限公司 | Barrel for barrel plating and method of using the same |
| CN116536739A (en) * | 2023-07-05 | 2023-08-04 | 江苏台祥自动化科技有限公司 | Hardware electroplating equipment |
| CN117089913B (en) * | 2023-10-18 | 2023-12-15 | 深圳市华富五金制品有限公司 | Metal fastener electroplating equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101570880B (en) * | 2009-06-05 | 2011-06-15 | 重庆大学 | stream guidance electro-plating roller assembly |
| CN201501936U (en) * | 2009-08-14 | 2010-06-09 | 鸿亿机械工业(浙江)有限公司 | Long-strip workpiece drum |
| CN203668542U (en) * | 2013-12-17 | 2014-06-25 | 安徽大地熊新材料股份有限公司 | Electroplating cylinder for magnet |
| CN104846421A (en) * | 2015-06-15 | 2015-08-19 | 李小顺 | Multifunctional electroplating barrel |
| CN106048701A (en) * | 2016-08-16 | 2016-10-26 | 天津睿兴科技有限公司 | Novel electroplating roller |
| CN211665204U (en) * | 2019-12-06 | 2020-10-13 | 嘉兴市金鹰新材料股份有限公司 | Electroplating roller for electroplating production line |
| CN211999968U (en) * | 2020-04-07 | 2020-11-24 | 沧州瑞青五金制品有限公司 | Hardware barrel-plating device |
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