Extended gravure roller electroplating device

Abstract

The extended gravure roller electroplating device provided by the present invention comprises a conductive rod, a stop ring, a conductive head, an extended head and an insulating sealing sleeve. By locating the first stop ring between the second stop ring and the conductive head, the first stop ring is connected to the conductive rod through a left-handed thread, and the second stop ring, the conductive head and the conductive rod are connected through a right-handed thread, the conductive head and the stop ring can be respectively tightened on the conductive rod; by allowing a first screw arranged on the extended head to penetrate the disc portion of the conductive head and be threadedly connected to the first stop ring, the extended head, the conductive head and the first stop ring are locked with each other; by allowing a second screw arranged on the first stop ring to be threadedly connected to the second stop ring, the first and second stop rings are locked with each other, the locking effect is good, and the relative rotation of the conductive rod and the head can be avoided; by arranging the extended head, the length change of the gravure roller can be easily adapted, the utilization rate of the conductive rod of the device is high, the current and torque transmission paths are separated, and the safety is good.

Description

Technical Field

[0001] The invention relates to the technical field of gravure printing, and in particular to an extended gravure roller electroplating device. Background Art

[0002] The processing of the existing gravure rollers involves the processes of surface nickel plating, surface copper plating and surface chromium plating. Chinese invention patent CN208279711U discloses a plating device for a hollow gravure roller. However, in actual use, the current is transmitted through the contact surface between the conductive rod and the conductive head. When the conductive rod drives the conductive head to rotate, the friction force generated by the contact surface is also used to transmit the torque, which makes the overall utilization rate of the conductive rod low. In addition, there is a mutual slip phenomenon between the conductive rod and the conductive head, which makes the contact surface between the conductive rod and the conductive head easy to wear and generate a gap, which affects the current transmission effect and the torque transmission effect; Chinese invention patents CN210529094U, CN21052909 3U, CN210314539U, and CN210314538U all disclose an extended gravure roller electroplating device in which a key connection is used between the conductive rod and the conductive head to transmit the rotational torque. However, these four schemes have many components and complex structures, which makes the resistance of the current transmission path large and the energy consumption high. In addition, since the torque required for the rotation of the gravure roller is large, the key needs to have very high strength, resulting in a small range of material selection for the key and high cost. After long-term use, the key and the keyway are prone to wear and gaps. When starting and stopping, a large impact will occur, which will also affect the current transmission effect. Moreover, in the above method, when the length of the gravure roller changes, the entire conductive head needs to be replaced, which is inconvenient to operate and costly.

[0003] There is an urgent need for an extended gravure roller electroplating device with a high conductive rod utilization rate, separate current transmission path and torque transmission path, good locking degree of the conductive rod and the conductive head, which can prevent the conductive rod and the conductive head from rotating relative to each other and can easily adapt to changes in the length of the gravure roller. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide an extended gravure roller electroplating device which has a high conductive rod utilization rate, separate current transmission path and torque transmission path, good locking degree of the conductive rod and the conductive head, can avoid relative rotation of the conductive rod and the conductive head and can easily adapt to changes in the length of the gravure roller.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is that the extended gravure roller electroplating device comprises:

[0006] A conductive rod, wherein the conductive rod is a hollow copper rod;

[0007] A stop ring, the stop ring is threadedly connected to the right end of the conductive rod, the stop ring comprises a first stop ring and a second stop ring, and the first stop ring is located on the right side of the second stop ring;

[0008] A conductive head, the conductive head comprising a cylindrical portion and a disc portion, the disc portion being located on the right side of the cylindrical portion and being integrally formed with the cylindrical portion, the cylindrical portion being inserted into the right end portion of the conductive rod and being threadedly connected to the conductive rod, and the disc portion being located on the right side of the first retaining ring;

[0009] An extension head, the extension head is located on the right side of the disc portion, and a connecting head is provided on the right end surface of the extension head;

[0010] An insulating sealing sleeve, the insulating sealing sleeve comprising a first insulating sealing sleeve sleeved on the conductive rod, the retaining ring, and the outer wall of the disc portion, and a second insulating sealing sleeve sleeved on the outer wall of the extension head;

[0011] The first retaining ring is connected to the conductive rod via a left-handed thread, the second retaining ring is connected to the conductive rod via a right-handed thread, and the cylindrical portion is connected to the conductive rod via a right-handed thread;

[0012] The axial center lines of the conductive rod, the retaining ring, the conductive head, the extension head, and the connecting head coincide with each other;

[0013] The extension head is provided with a plurality of first screws penetrating the disc portion, the first screws are evenly distributed in a ring along the axis of the extension head, and the first screws are threadedly connected with the first threaded holes on the first retaining ring to lock the extension head on the conductive head;

[0014] The first retaining ring is provided with a plurality of second screws, the second screws are located outside the first threaded hole and are evenly distributed in an annular shape along the axis of the first retaining ring, and the second screws are threadedly connected with the second threaded hole on the second retaining ring to lock the first retaining ring on the second retaining ring;

[0015] A third screw penetrating the extension head is provided at the center of the connector, and the third screw is threadedly connected to the central threaded hole on the right end surface of the conductive head to lock the connector on the extension head.

[0016] Preferably, a first outer retaining ring is arranged between the first retaining ring, the second retaining ring and the first insulating sealing sleeve, and the left and right end faces of the first outer retaining ring are pressed against the right end faces of the first retaining ring, the first insulating sealing sleeve and the second retaining ring to prevent the three from sliding relative to each other in the axial direction; a retaining ring is arranged on the extension head, and a second outer retaining ring is arranged between the extension head, the retaining ring and the second insulating sealing sleeve, and the left and right end faces of the second outer retaining ring are pressed between the retaining ring, the second insulating sealing sleeve and the left end face of the extension head to prevent the three from sliding relative to each other in the axial direction.

[0017] Further preferably, the first outer retaining ring and the second outer retaining ring are both composed of three main body parts with the same structure.

[0018] Preferably, an inner retaining ring is also provided on the outer wall of the right end portion of the conductive rod, and the inner retaining ring is located between the first stopping ring and the second stopping ring, and the left and right end faces of the inner retaining ring are pressed against the first stopping ring, the conductive rod and the right end faces of the second stopping ring to prevent relative sliding of the three in the axial direction.

[0019] Further preferably, the inner retaining ring is composed of two main body parts with the same structure.

[0020] Preferably, both the first threaded hole and the second threaded hole are through holes.

[0021] Preferably, a plug for isolating an internal cavity of the conductive rod is provided in the conductive rod, the plug is located on the left side of the cylindrical portion, and the plug is tightly matched with the inner wall of the conductive rod.

[0022] Preferably, the outer surface of the conductive rod is provided with a third insulating sealing sleeve extending axially along the conductive rod, the third insulating sealing sleeve is located on the left side of the second stopping ring, the right end of the third insulating sealing sleeve is inserted between the first insulating sealing sleeve and the conductive rod, and an O-ring is provided between the third insulating sealing sleeve and the first insulating sealing sleeve.

[0023] Preferably, a positioning sleeve is provided in the middle of the first screw, and countersunk holes for accommodating the positioning sleeve are provided on the left end face of the extended head and the right end face of the disc portion; the extended head is also provided with top screw holes for easy disassembly and assembly, and the top screw holes are through holes and are evenly distributed in a ring shape along the axis of the extended head.

[0024] Further preferably, a first sealing ring is provided between the right end face of the first insulating sealing sleeve, the right end face of the conductive head and the left end face of the second insulating sealing sleeve, and the first sealing ring is used to prevent the plating liquid from contacting the conductive head; a second sealing ring is provided between the right end face of the extension head and the right end face of the second insulating sealing sleeve, and the second sealing ring is pressed against the gravure roller to prevent the plating liquid from contacting the extension head.

[0025] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0026] The extended gravure roller electroplating device provided by the present invention comprises: a conductive rod, two retaining rings, a conductive head, an extended head and an insulating sealing sleeve. By arranging a first retaining ring between a second retaining ring and a disc portion of the conductive head, the first retaining ring is connected to the conductive rod through a left-handed thread, and the second retaining ring, the cylindrical portion of the conductive head and the conductive rod are connected through a right-handed thread, the conductive head and the retaining ring can be respectively tightened on the conductive rod; by arranging a plurality of first screws penetrating the disc portion on the extended head and a plurality of second screws on the first retaining ring, the extended head can be locked on the conductive head through a threaded connection between the first screw and the first retaining ring, and the first retaining ring can be locked on the second retaining ring through a threaded connection between the second screw and the second retaining ring, so that the conductive rod and the conductive head are well locked and relative rotation between the conductive rod and the conductive head can be avoided; by arranging the extended head, the length change of the gravure roller can be easily adapted, the utilization rate of the conductive rod of the device is high, the current transmission path and the torque transmission path are separated, and the safety is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional schematic diagram of a preferred embodiment of the present invention.

[0028] Figure 2 yes Figure 1 Schematic diagram of the right side view of the conductive head.

[0029] Figure 3 yes Figure 1 Schematic diagram of the left side of the medium extension head.

[0030] Figure 4 yes Figure 1 Schematic diagram of the conductive rod.

[0031] Figure 5 yes Figure 1 Schematic diagram of the first insulating sealing sleeve.

[0032] Figure 6 yes Figure 1 Schematic diagram of the second insulating sealing sleeve.

[0033] Figure 7 yes Figure 1Schematic diagram of the right side view of the first outer retaining ring and the second outer retaining ring.

[0034] Figure 8 yes Figure 1 Schematic diagram of the right side view of the inner retaining ring.

[0035] Fig. 9 yes Figure 1 Schematic diagram of the right side view of the first retaining ring in FIG.

[0036] Fig.10 yes Figure 1 Schematic diagram of the right side view of the second retaining ring.

[0037] Fig.11 yes Figure 1 Schematic diagram of the right side view of the middle retaining ring.

[0038] Among them: 10. conductive rod; 11. plug; 21. first retaining ring; 211. first threaded hole; 212. countersunk hole; 22. second retaining ring; 221. second threaded hole; 30. conductive head; 31. cylindrical part; 32. disc part; 321. center threaded hole; 322. positioning sleeve countersunk hole; 40. extension head; 41. connector; 411. copper tile; 412. copper tile positioning column; 42. countersunk hole; 43. retaining ring; 44. top screw hole; 45. positioning sleeve countersunk hole; 51. first insulating sealing sleeve; 52. second insulating sealing sleeve; 53. third insulating sealing sleeve; 54. O-ring; 55. first sealing ring; 56. second sealing ring; 61. first outer retaining ring; 62. second outer retaining ring; 70. inner retaining ring; 80. positioning sleeve; 90. gravure roller. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0040] The left and right directions described in the present invention refer to Figure 1 The left and right direction in .

[0041] like Figure 1-11As shown, the extended gravure roller electroplating device provided by the present invention comprises: a conductive rod 10, a stop ring, a conductive head 30, an extended head 40, and an insulating sealing sleeve, wherein the conductive rod 10 is a hollow copper rod; the stop ring is threadedly connected to the right end of the conductive rod 10, the stop ring comprises a first stop ring 21 and a second stop ring 22, and the first stop ring 21 is located on the right side of the second stop ring 22; the conductive head 30 comprises a cylindrical portion 31 and a disc portion 32, the disc portion 32 is located on the right side of the cylindrical portion 31 and is integrally formed with the cylindrical portion 31, the cylindrical portion 31 is inserted into the right end of the conductive rod 10 and is connected to the conductive rod 10 Threaded connection, the disc portion 32 is located on the right side of the first stop ring 21; the extension head 40 is located on the right side of the disc portion 32, and the right end face of the extension head 40 is provided with a connector 41; the insulating sealing sleeve includes a first insulating sealing sleeve 51 sleeved on the outer wall of the conductive rod 10, the stop ring, and the disc portion 32, and a second insulating sealing sleeve 52 sleeved on the outer wall of the extension head 40; the first stop ring 21 is connected to the conductive rod 10 through a left-handed thread, the second stop ring 22 is connected to the conductive rod 10 through a right-handed thread, and the cylindrical portion 31 is connected to the conductive rod 10 through a right-handed thread; the conductive rod 10, the stop ring, the conductive rod 10 The axis lines of the electric head 30, the extension head 40, and the connecting head 41 coincide with each other; the extension head 40 is provided with a plurality of first screws (not shown in the figure) penetrating the disc portion 32, and the extension head 40 is provided with countersunk holes 42 for installing the first screws, and the first screws are evenly distributed in a ring along the axis line of the extension head 40, and the first screws are threadedly connected with the first threaded holes 211 on the first retaining ring 21 to lock the extension head 40 on the conductive head 30; the first retaining ring 21 is provided with a plurality of second screws (not shown in the figure), and the first retaining ring 21 is provided with countersunk holes 212 for installing the second screws, and the second screws are located at The outer side of the first threaded hole 211 is evenly distributed in a circle along the axial center line of the first stop ring 21, and the second screw is threadedly connected to the second threaded hole 221 on the second stop ring 22 to lock the first stop ring 21 on the second stop ring 22; the connecting head 41 includes a copper washer 411 for pressing against the end face of the gravure roller, a copper washer positioning column 412 located in the middle of the copper washer 411, and a third screw (not shown in the figure) arranged at the center of the copper washer positioning column 412 and passing through the extension head 40. The third screw is threadedly connected to the central threaded hole 321 on the right end face of the disc portion 32 to lock the connecting head 41 on the extension head 40.

[0042] Grooves are provided on the left end face of the first stopping ring 21 and the first insulating sealing sleeve 51, and a first outer retaining ring 61 is provided in a cavity surrounded by the two grooves and the right end face of the second stopping ring 22, and the left and right end faces of the first outer retaining ring 61 are pressed against the right end faces of the first stopping ring 21, the first insulating sealing sleeve 51 and the second stopping ring 22 to prevent the three from sliding relative to each other in the axial direction; a retaining ring 43 is provided on the extension head 40, and grooves are provided on the retaining ring 43 and the second insulating sealing sleeve 52, and a second outer retaining ring 62 is provided in a space surrounded by the two grooves and the left end face of the extension head 40, and the left and right end faces of the second outer retaining ring 62 are pressed between the retaining ring 43, the second insulating sealing sleeve 52 and the left end face of the extension head 40 to prevent the three from sliding relative to each other in the axial direction; in this embodiment, the first outer retaining ring 61 and the second outer retaining ring 62 are both composed of three main parts with the same structure.

[0043] A groove for installing an inner retaining ring 70 is also provided on the outer wall of the right end portion of the conductive rod 10. The inner retaining ring 70 is located between the first stop ring 21 and the second stop ring 22. The left and right end surfaces of the inner retaining ring 70 are pressed against the right end surfaces of the first stop ring 21, the conductive rod 10 and the second stop ring 22 to prevent relative sliding of the three in the axial direction. In this embodiment, the inner retaining ring is composed of two main parts with the same structure.

[0044] In order to facilitate the disassembly of the first retaining ring 21 and the second retaining ring 22 , the first threaded hole 211 and the second threaded hole 221 are both through holes, which can serve as both fixing screws and jackscrew holes.

[0045] A plug 11 is provided inside the conductive rod 10 for isolating its internal cavity. The plug 11 is located on the left side of the cylindrical portion 31. The plug 11 is tightly fitted with the inner wall of the conductive rod 10. The tight fit means that the outer diameter of the plug 11 is larger than the aperture of the inner hole of the conductive rod 10 by 0.005-0.015mm.

[0046] The outer surface of the conductive rod 10 is sleeved with a third insulating sealing sleeve 53 extending axially along the conductive rod 10. The third insulating sealing sleeve 53 is located on the left side of the second stop ring 22. The right end of the third insulating sealing sleeve 53 is inserted between the first insulating sealing sleeve 51 and the conductive rod 10. An O-ring 54 is arranged between the third insulating sealing sleeve 53 and the first insulating sealing sleeve 51.

[0047] In this embodiment, in order to facilitate the disassembly and assembly of the extension head 40, a positioning sleeve 80 is further arranged between the conductive head 30 and the extension head 40. The positioning sleeve 80 is sleeved on the middle part of the first screw. The left end face of the extension head 40 and the right end face of the disc portion 32 are provided with a positioning sleeve countersunk hole 45 and a positioning sleeve countersunk hole 322 for accommodating the positioning sleeve; the extension head 40 is also provided with a top screw hole 44 for easy disassembly and assembly. The top screw holes 44 are through holes and are evenly distributed in a ring shape along the axis of the extension head 40. The top screw holes 44 and the countersunk holes 42 are alternately arranged.

[0048] In this embodiment, a first sealing ring 55 is provided between the right end face of the first insulating sealing sleeve 51, the right end face of the conductive head 30 and the left end face of the second insulating sealing sleeve 52, and the first sealing ring 55 is used to prevent the plating liquid from contacting the conductive head 30; a second sealing ring 56 is provided between the right end face of the extension head 40 and the right end face of the second insulating sealing sleeve 52, and the second sealing ring 56 is pressed against the gravure roller 90 to prevent the plating liquid from contacting the extension head 40.

[0049] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0050] The extended gravure roller electroplating device provided by the present invention can tighten the conductive head and the stop ring to the conductive rod respectively by arranging a first stop ring between the second stop ring and the disc part of the conductive head, connecting the first stop ring to the conductive rod through a left-handed thread, and connecting the second stop ring, the cylindrical part of the conductive head and the conductive rod through a right-handed thread; by arranging a plurality of first screws penetrating the disc part on the extended head and a plurality of second screws on the first stop ring, the extended head can be locked to the conductive head through the threaded connection between the first screw and the first stop ring, and the first stop ring can be locked to the second stop ring through the threaded connection between the second screw and the second stop ring, so that the conductive rod and the conductive head are well locked and relative rotation between the conductive rod and the conductive head can be avoided; by arranging the extended head, the length change of the gravure roller can be easily adapted, the utilization rate of the conductive rod of the device is high, the current transmission path and the torque transmission path are separated, and the safety is good.

[0051] It should be noted that, in the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0052] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. Extended gravure roller electroplating device, including: A conductive rod, wherein the conductive rod is a hollow copper rod; A stop ring, the stop ring is threadedly connected to the right end of the conductive rod, the stop ring comprises a first stop ring and a second stop ring, and the first stop ring is located on the right side of the second stop ring; A conductive head, the conductive head comprising a cylindrical portion and a disc portion, the disc portion being located on the right side of the cylindrical portion and being integrally formed with the cylindrical portion, the cylindrical portion being inserted into the right end portion of the conductive rod and being threadedly connected to the conductive rod, and the disc portion being located on the right side of the first retaining ring; An extension head, the extension head is located on the right side of the disc portion, and a connector is provided on the right end surface of the extension head; an insulating sealing sleeve, the insulating sealing sleeve comprises a first insulating sealing sleeve sleeved on the conductive rod, the retaining ring, and the outer wall of the disc portion, and a second insulating sealing sleeve sleeved on the outer wall of the extension head; the axial center lines of the conductive rod, the retaining ring, the conductive head, the extension head, and the connector coincide with each other; Features: The first retaining ring is connected to the conductive rod via a left-handed thread, the second retaining ring is connected to the conductive rod via a right-handed thread, and the cylindrical portion is connected to the conductive rod via a right-handed thread; The extension head is provided with a plurality of first screws penetrating the disc portion, the first screws are evenly distributed in a ring along the axis of the extension head, and the first screws are threadedly connected with the first threaded holes on the first retaining ring to lock the extension head on the conductive head; The first retaining ring is provided with a plurality of second screws, the second screws are located outside the first threaded hole and are evenly distributed in an annular shape along the axis of the first retaining ring, and the second screws are threadedly connected with the second threaded hole on the second retaining ring to lock the first retaining ring on the second retaining ring; A third screw is provided at the center of the connector and passes through the extension head. The third screw is threadedly connected to the central threaded hole on the right end surface of the conductive head to lock the connector on the extension head. The first threaded hole and the second threaded hole are both through holes; A positioning sleeve is provided in the middle of the first screw, and countersunk holes for accommodating the positioning sleeve are provided on the left end face of the extended head and the right end face of the disc portion; the extended head is also provided with top screw holes for easy disassembly and assembly, and the top screw holes are through holes and are evenly distributed in a ring shape along the axis of the extended head.

2. The extended gravure roller electroplating device according to claim 1, characterized in that: A first outer retaining ring is arranged between the first retaining ring, the second retaining ring and the first insulating sealing sleeve, and the left and right end faces of the first outer retaining ring are pressed against the right end faces of the first retaining ring, the first insulating sealing sleeve and the second retaining ring to prevent the three from sliding relative to each other in the axial direction; a retaining ring is arranged on the extended head, and a second outer retaining ring is arranged between the extended head, the retaining ring and the second insulating sealing sleeve, and the left and right end faces of the second outer retaining ring are pressed between the retaining ring, the second insulating sealing sleeve and the left end face of the extended head to prevent the three from sliding relative to each other in the axial direction.

3. The extended gravure roller electroplating device according to claim 2, characterized in that: The first outer retaining ring and the second outer retaining ring are both composed of three main parts with the same structure.

4. The extended gravure roller electroplating device according to claim 1, characterized in that: An inner retaining ring is also provided on the outer wall of the right end portion of the conductive rod, and the inner retaining ring is located between the first stopping ring and the second stopping ring. The left and right end surfaces of the inner retaining ring are pressed against the first stopping ring, the conductive rod and the right end surfaces of the second stopping ring to prevent relative sliding of the three in the axial direction.

5. The extended gravure roller electroplating device according to claim 4, characterized in that: The inner retaining ring is composed of two main body parts with the same structure.

6. The extended gravure roller electroplating device according to claim 1, characterized in that: A plug for isolating the internal cavity of the conductive rod is arranged inside the conductive rod, the plug is located on the left side of the cylindrical portion, and the plug is tightly matched with the inner wall of the conductive rod.

7. The extended gravure roller electroplating device according to claim 1, characterized in that: The outer surface of the conductive rod is sleeved with a third insulating sealing sleeve extending axially along the conductive rod, the third insulating sealing sleeve is located on the left side of the second stopping ring, the right end of the third insulating sealing sleeve is inserted between the first insulating sealing sleeve and the conductive rod, and an O-ring is arranged between the third insulating sealing sleeve and the first insulating sealing sleeve.

8. The extended gravure roller electroplating device according to any one of claims 1 to 7, characterized in that: A first sealing ring is provided between the right end face of the first insulating sealing sleeve, the right end face of the conductive head and the left end face of the second insulating sealing sleeve, and the first sealing ring is used to prevent the electroplating liquid from contacting the conductive head; a second sealing ring is provided between the right end face of the extension head and the right end face of the second insulating sealing sleeve, and the second sealing ring is pressed against the gravure roller to prevent the electroplating liquid from contacting the extension head.

Images