CN213388953U - Controllable power supply and electrode automatic clamping device for deep small hole inner wall chromium plating - Google Patents
Controllable power supply and electrode automatic clamping device for deep small hole inner wall chromium plating Download PDFInfo
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- CN213388953U CN213388953U CN202022429561.7U CN202022429561U CN213388953U CN 213388953 U CN213388953 U CN 213388953U CN 202022429561 U CN202022429561 U CN 202022429561U CN 213388953 U CN213388953 U CN 213388953U
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Abstract
The utility model discloses a controllable electricity and electrode self-holding device of dark aperture inner wall chromium plating, including positive pole upper end clamping device and positive pole lower extreme clamping device, positive pole lower extreme clamping device arranges the below in, with positiveThe clamping device at the upper end of the pole rod is matched with and clamps the anode rod; the slender pipe is sleeved outside the anode rod, is arranged between the anode rod upper end clamping device and the anode rod lower end clamping device and is a cathode part for electroplating; the cathode clamping device is used for clamping or loosening the elongated tube; DC current source is1And a direct current source is2The anode is respectively connected with the anode rod upper end clamping device and the anode rod lower end clamping device and transmits current to the anode rod, and the cathode is connected with the cathode clamping device and transmits the current to the slender tube; DC current source is1And a direct current source is2The power is supplied from two ends of the anode rod respectively, and the current at the two ends can be adjusted, so that controllable power supply is realized.
Description
Technical Field
The utility model relates to an electroplate technical field, concretely relates to controllable for electricity of dark aperture inner wall chromium plating and electrode self-holding device.
Background
Under severe working conditions, a deep hole of a long and thin tube needs to have extremely high wear resistance and ablation resistance, common metal materials are difficult to meet the requirements of the working conditions, and a layer of metal chromium is generally required to be electroplated on the inner wall surface of the deep hole.
On one hand, the length-diameter ratio of the slender pipe exceeds 70, and in the electroplating process, the current densities of different parts of the inner wall of the deep hole are different due to the attenuation effect of the anode current, so that the deposition rates of metal chromium at different parts of the inner wall are different, the thicknesses of chromium layers at different parts are different, and the product quality is seriously influenced.
On the other hand, in the traditional electroplating process of a certain slender pipe, manual clamping and carrying are adopted, the labor intensity is high, the working environment is severe, and the occupation health is not facilitated.
Disclosure of Invention
An object of the utility model is to overcome the not enough of current chromium plating power supply unit, provide a controllable power supply of dark aperture inner wall chromium plating and electrode self-holding device, verify through research and test, adopt controllable power supply unit can solve the inhomogeneous problem of elongated tube cladding material thickness distribution.
In order to achieve the above object, the utility model adopts the following technical scheme:
a controllable power supply and automatic electrode clamping device for chrome plating of the inner wall of a deep small hole comprises an anode rod upper end clamping device which is arranged on an electroplating equipment machine tool; clamping device for lower end of anode rod, mountingThe clamping device is arranged below the clamping device at the upper end of the anode rod on the electroplating equipment machine tool, is matched with the clamping device at the upper end of the anode rod and is used for clamping the anode rod; the slender pipe is sleeved outside the anode rod, is arranged between the anode rod upper end clamping device and the anode rod lower end clamping device, and is used for electroplating chromium on the surface of an inner hole of the slender pipe, which is an electroplated cathode part; the cathode clamping device is arranged outside the slender pipe, one end of the cathode clamping device is arranged on a machine tool of the electroplating equipment, and the other end of the cathode clamping device is used for clamping or loosening the slender pipe; DC current source is1The anode of the anode rod is connected with the clamping device at the upper end of the anode rod, current is transmitted to the anode rod from the clamping device at the upper end of the anode rod, and the cathode is connected with the cathode clamping device and is in clamping contact with the slender pipe through the cathode clamping device; DC current source is2The anode of the anode rod is connected with the anode rod lower end clamping device, current is transmitted to the anode rod from the anode rod lower end clamping device, and the cathode is connected with the cathode clamping device and is in clamping contact with the slender pipe through the cathode clamping device; the direct current source is1And a direct current source is2The power is supplied from two ends of the anode rod respectively, and the current at the two ends can be adjusted, so that controllable power supply is realized.
Preferably, the anode rod upper end clamping device and the anode rod lower end clamping device both comprise a first cylinder, a first piston, a shell, a clamping sleeve, an elastic clamping sleeve and a sealing cover, the first cylinder is fixedly mounted on an electroplating equipment machine tool, one end of the first piston is connected with the first cylinder, the first cylinder drives the first cylinder to reciprocate up and down, the other end of the first piston extends into the shell and is connected with the clamping sleeve, a cavity is formed in the shell, the clamping sleeve is arranged in the cavity, the elastic clamping sleeve is arranged in the clamping sleeve, the clamping sleeve and the elastic clamping sleeve drive the clamping sleeve to reciprocate up and down under the pushing and pulling action of the first cylinder on the first piston, and the clamping sleeve and the elastic clamping sleeve enable the elastic clamping sleeve to contract inwards or expand outwards through mutual extrusion of matched wedge-shaped conical surfaces, so that the anode rod is clamped or loosened.
Preferably, the direct current source is1The anode of the anode rod is connected on an elastic jacket in a clamping device at the upper end of the anode rod, and current is transmitted to the anode rod from the elastic jacket, and the direct current source is2The anode is connected on an elastic jacket in a clamping device at the lower end of the anode rod, and the current is transmitted to the anode rod from the elastic jacket.
Preferably, the anode rod is a cylindrical metal rod and is an anode part of the elongated tube with deep small holes, and two ends of the anode rod respectively penetrate through sealing covers of a clamping device at the upper end of the anode rod and a clamping device at the lower end of the anode rod and then extend into the elastic jacket.
Preferably, the cathode clamping device comprises two cathode clamping blocks which are symmetrically arranged, each cathode clamping block is provided with a rotating shaft and a connecting rod, the middle parts of the two cathode clamping blocks enclose a space for clamping the slender tube, the connecting rod is arranged at the rear part of the cathode clamping block, one end of the connecting rod is hinged with the cathode clamping block, the other end of the connecting rod is hinged with a second piston, the right side of the second piston is connected with a second cylinder, the second cylinder is fixedly arranged on an electroplating equipment machine tool, the cathode clamping device drives the second piston to linearly push and pull to act on the connecting rod through the second cylinder, so that the cathode clamping blocks rotate around the rotating shafts to clamp and release the slender tube, and when the cathode clamping device works, the middle position of the slender tube in the length direction is clamped, and current distribution is uniform.
Preferably, the direct current source is1Negative electrode of (1), DC current source is2The cathodes of the cathode clamping devices are all connected with the cathode clamping blocks of the cathode clamping devices.
The utility model has the advantages that:
1. the invention adopts two current sources to respectively supply power from the two ends of the anode, and the current at the two ends is adjustable and controllable, thereby realizing that the current density at the two ends of the anode is controllable, the current distribution is uniform, and the thickness of the chromium plating layer on the inner wall of the slender pipe is more uniform;
2. both ends of the anode and the cathode adopt a pneumatic clamping mode, so that basic conditions are provided for realizing clamping automation, and the labor intensity of operators is reduced;
3. due to the adoption of the mode of controllable power supply at two ends, the effective current density on the surface of the workpiece is more uniform, the processing qualification rate of the product is greatly improved, the proportion of electrolytic chromium stripping or acid chromium stripping is reduced, the consumption of electric energy and plating solution is greatly reduced, the emission of heavy metals such as chromic anhydride and the like is reduced, and the energy-saving and emission-reducing effects are obvious.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the anode rod upper end clamping device and the anode rod lower end clamping device of the present invention;
fig. 3 is a schematic structural diagram of the cathode clamping device of the present invention.
Reference numerals
1. An anode rod upper end clamping device; 2. an anode rod; 3. an elongated tube; 4. a cathode clamping device; 5. clamping device for lower end of anode rod, 6, DC current source is17, direct current source is2；
11. The device comprises a first cylinder, a first piston, a first shell, a first clamping sleeve, a first elastic clamping sleeve, a first piston, a second piston, a third piston, a fourth piston;
41. a cathode clamping block; 42. a rotating shaft; 43. a connecting rod; 44. a second piston; 45. a second cylinder.
Detailed Description
The working principle and structure of the present invention will be described in further detail with reference to the following embodiments and accompanying drawings.
As shown in fig. 1 to 3, a controllable power supply and automatic electrode clamping device for deep small hole inner wall chromium plating comprises an anode rod upper end clamping device 1 and an anode rod lower end clamping device 5 which are arranged on an electroplating equipment machine tool, wherein the anode rod lower end clamping device 5 is arranged below the anode rod upper end clamping device 1 and is matched with the anode rod upper end clamping device 1 for clamping an anode rod 2;
as shown in fig. 2, the structure and function of the clamping device 1 at the upper end of the anode rod and the clamping device 5 at the lower end of the anode rod are consistent, and both comprise a first cylinder 11, a first piston 12, a housing 13, a clamping sleeve 14, an elastic jacket 15 and a sealing cover 16, the first cylinder 11 is fixedly installed on a machine tool of an electroplating device, one end of the first piston 12 is connected with the first cylinder 11, the first cylinder 11 drives the first cylinder 11 to reciprocate up and down, the other end of the first piston extends into the housing 13 and is connected with the clamping sleeve 14, a cavity is arranged in the housing 13, the clamping sleeve 14 is arranged in the cavity, the elastic jacket 15 is arranged in the clamping sleeve 14, the clamping sleeve 14 and the elastic jacket 15 drive the clamping sleeve 14 to reciprocate up and down under the pushing and pulling action of the first cylinder 11 on the first piston 12, the clamping sleeve 14 and the elastic jacket 15 make the elastic jacket 15 expand inwards or outwards through the mutual extrusion of the matched, thereby clamping or unclamping the anode rod 2, the sealing cover 16 is fixedly installed at the bottom of the case 13, and a through hole is formed at the middle of the sealing cover 16 for penetrating the anode rod 2.
The device also comprises an elongated tube 3, wherein the elongated tube 3 is sleeved outside the anode rod 2 and is arranged between the anode rod upper end clamping device 1 and the anode rod lower end clamping device 5, the elongated tube 3 is a deep small-hole tube part, is an object for electroplating processing, and is a cathode part for electroplating, wherein the surface of an inner hole of the elongated tube is required to be electroplated with chromium;
the cathode clamping device 4 is arranged outside the slender tube 3, one end of the cathode clamping device 4 is arranged on a machine tool of electroplating equipment, and the other end of the cathode clamping device 4 is used for clamping or loosening the slender tube 3; as shown in fig. 3, the cathode clamping device 4 includes two cathode clamping blocks 41 symmetrically arranged, each cathode clamping block 41 is provided with a rotating shaft 42 and a connecting rod 43, the middle portions of the two cathode clamping blocks 41 enclose a space for clamping the elongated tube 3, the connecting rod 43 is disposed at the rear portion of the cathode clamping block 41, one end of the connecting rod is hinged to the cathode clamping block 41, the other end of the connecting rod is hinged to a second piston 44, the right side of the second piston 44 is connected to the second cylinder 45, the second cylinder 45 is fixedly mounted on the electroplating equipment machine tool, the cathode clamping device 4 drives the second piston 44 to linearly push and pull the connecting rod 43 through the second cylinder 45, so that the cathode clamping block 41 rotates around the rotating shaft 42 to clamp and release the elongated tube 3, and when the cathode clamping device 4 works, the middle position in the length direction of the elongated tube 3 should be clamped, so that the.
Also comprises a direct current source is16, the direct current source is1The anode of 6 is connected with the elastic jacket 15 of the anode rod upper end clamping device 1, the current is transmitted to the anode rod 2 from the elastic jacket 15 of the anode rod upper end clamping device 1, the cathode is connected with the cathode clamping block 41 of the cathode clamping device 4, and is in clamping contact with the slender tube 3 through the cathode clamping block 41 of the cathode clamping device 4;
also comprises a direct current source is27, the direct current source is2The anode of the anode 7 is connected with the elastic jacket 15 of the anode rod lower end clamping device 5, the current is transmitted to the anode rod 2 from the elastic jacket 15 of the anode rod lower end clamping device, the cathode is connected with the cathode clamping device 4, and is in clamping contact with the slender tube 3 through the cathode clamping block 41 of the cathode clamping device;
the utility model provides an anode rod 2 is columniform metal pole, by steel wire surface copper facing (perhaps silver), the processing of plating lead forms again, is the anode part of the deep aperture chromium plating of slender pipe, and 2 both ends of anode rod pass behind anode rod upper end clamping device 1 and the sealed lid 16 of anode rod lower extreme clamping device 5 respectively, extend to in the elasticity presss from both sides the cover 15.
During electroplating, two current sources i are adopteds1、is2The two ends of the anode are respectively powered, and the current at the two ends of the anode rod can be adjusted according to the requirement of the thickness of the inner hole coating of the elongated tube.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a controllable power supply of dark aperture inner wall chromium plating and electrode self-holding device which characterized in that: comprises that
The anode rod upper end clamping device is arranged on an electroplating equipment machine tool;
the anode rod lower end clamping device is arranged on an electroplating equipment machine tool, is arranged below the anode rod upper end clamping device, is matched with the anode rod upper end clamping device and is used for clamping the anode rod;
the slender pipe is sleeved outside the anode rod, is arranged between the anode rod upper end clamping device and the anode rod lower end clamping device, and is used for electroplating chromium on the surface of an inner hole of the slender pipe, which is an electroplated cathode part;
the cathode clamping device is arranged outside the slender pipe, one end of the cathode clamping device is arranged on a machine tool of the electroplating equipment, and the other end of the cathode clamping device is used for clamping or loosening the slender pipe;
DC current source is1The anode of the anode rod is connected with the clamping device at the upper end of the anode rod, current is transmitted to the anode rod from the clamping device at the upper end of the anode rod, and the cathode is connected with the cathode clamping device and is in clamping contact with the slender pipe through the cathode clamping device;
DC current source is2The anode of the anode rod is connected with the anode rod lower end clamping device, current is transmitted to the anode rod from the anode rod lower end clamping device, and the cathode is connected with the cathode clamping device and is in clamping contact with the slender pipe through the cathode clamping device;
the direct current source is1And a direct current source is2The power is supplied from two ends of the anode rod respectively, and the current at the two ends can be adjusted, so that controllable power supply is realized.
2. The controllable power supply and automatic electrode clamping device for the chromium plating of the inner wall of the deep small hole as claimed in claim 1, wherein: the anode rod upper end clamping device and the anode rod lower end clamping device respectively comprise a first air cylinder, a first piston, a shell, a clamping sleeve, an elastic clamping sleeve and a sealing cover, the first air cylinder is fixedly installed on an electroplating equipment machine tool, one end of the first piston is connected with the first air cylinder, the first air cylinder drives the first air cylinder to reciprocate up and down, the other end of the first piston extends into the shell and is connected with the clamping sleeve, a cavity is formed in the shell, the clamping sleeve is arranged in the cavity, the elastic clamping sleeve is arranged in the clamping sleeve, the clamping sleeve and the elastic clamping sleeve drive the clamping sleeve to reciprocate up and down under the pushing and pulling action of the first air cylinder on the first piston, and the clamping sleeve and the elastic clamping sleeve enable the elastic clamping sleeve to contract inwards or expand outwards through mutual extrusion of matched wedge-shaped conical surfaces, so that the anode rod is clamped or.
3. The controllable power supply and automatic electrode clamping device for the chromium plating of the inner wall of the deep small hole as claimed in claim 2, wherein: the direct current source is1The anode is connected with an elastic clamp in a clamping device at the upper end of the anode rodOn the sleeve, the current is transmitted to the anode pole from the elastic jacket, and the direct current source is2The anode is connected on an elastic jacket in a clamping device at the lower end of the anode rod, and the current is transmitted to the anode rod from the elastic jacket.
4. The controllable power supply and automatic electrode clamping device for the chromium plating of the inner wall of the deep small hole as claimed in claim 2, wherein: the anode rod is a cylindrical metal rod and is an anode part of the slender tube deep small hole chromium plating, and two ends of the anode rod respectively penetrate through sealing covers of a clamping device at the upper end of the anode rod and a clamping device at the lower end of the anode rod and then extend into the elastic jacket.
5. The controllable power supply and automatic electrode clamping device for the chromium plating of the inner wall of the deep small hole as claimed in claim 1, wherein: the cathode clamping device comprises two cathode clamping blocks which are symmetrically arranged, a rotating shaft and a connecting rod are arranged on each cathode clamping block, the middle parts of the two cathode clamping blocks enclose a space for clamping the slender tube, the connecting rod is arranged at the rear part of each cathode clamping block, one end of the connecting rod is hinged to the cathode clamping block, the other end of the connecting rod is hinged to a second piston, the right side of the second piston is connected with a second air cylinder, the second air cylinder is fixedly arranged on a machine tool of the electroplating equipment, the cathode clamping device drives the second piston to be linearly pushed and pulled to act on the connecting rod through the second air cylinder, the cathode clamping blocks rotate around the rotating shaft, clamping and loosening of the slender tube are achieved, and when the cathode clamping device works, the middle position of the slender tube in the length direction.
6. The controllable power supply and automatic electrode clamping device for the chromium plating of the inner wall of the deep small hole as claimed in claim 5, wherein: the direct current source is1Negative electrode of (1), DC current source is2The cathodes of the cathode clamping devices are all connected with the cathode clamping blocks of the cathode clamping devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022429561.7U CN213388953U (en) | 2020-10-28 | 2020-10-28 | Controllable power supply and electrode automatic clamping device for deep small hole inner wall chromium plating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022429561.7U CN213388953U (en) | 2020-10-28 | 2020-10-28 | Controllable power supply and electrode automatic clamping device for deep small hole inner wall chromium plating |
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| Publication Number | Publication Date |
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| CN213388953U true CN213388953U (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022429561.7U Active CN213388953U (en) | 2020-10-28 | 2020-10-28 | Controllable power supply and electrode automatic clamping device for deep small hole inner wall chromium plating |
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| Country | Link |
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| CN (1) | CN213388953U (en) |
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