阅读说明：本技术 一种阴极辊专用在线防氧化装置 (Special online anti-oxidation device for cathode roller ) 是由 李永明 叶成林 陈优昌 杨榕桢 杨雨平 温欢元 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种阴极辊专用在线防氧化装置；属于阴极辊防氧化技术领域；其技术要点包括罩设在剥离辊沿阴极辊转动方向前侧的隔离罩,在隔离罩上表面分布有若干进气接头,进气接头与外部压缩氮气源管路连接；在隔离罩与阴极辊辊面相对的上下两端分别设置有可调式隔离组件；在隔离罩左右两端设置有与阴极辊两侧端面相配合的动态密封组件,通过可调式隔离组件和动态密封组件配合,隔离罩和阴极辊之间形成上下两端具有0.8-1.2mm开口的密封腔室,在密封腔室内填充有氮气,位于密封腔室内的氮气压强比密封腔室外的大气压强大0.1-0.3Mpa；本发明旨在提供一种结构紧凑、密封方式独特且效果良好的阴极辊专用在线防氧化装置；用于生箔机上阴极辊的在线防氧化。(The invention discloses a special online anti-oxidation device for a cathode roller; belongs to the technical field of cathode roller oxidation prevention; the technical key points of the device comprise an isolation cover which covers the front side of a stripping roller along the rotation direction of a cathode roller, wherein a plurality of air inlet joints are distributed on the upper surface of the isolation cover and are connected with an external compressed nitrogen source pipeline; adjustable isolation components are respectively arranged at the upper end and the lower end of the isolation cover opposite to the roll surface of the cathode roll; the left end and the right end of the isolation cover are provided with dynamic sealing components matched with the end surfaces of the two sides of the cathode roller, a sealing cavity with openings of 0.8-1.2mm at the upper end and the lower end is formed between the isolation cover and the cathode roller through the matching of the adjustable isolation components and the dynamic sealing components, nitrogen is filled in the sealing cavity, and the pressure intensity of the nitrogen in the sealing cavity is 0.1-0.3Mpa greater than the atmospheric pressure outside the sealing cavity; the invention aims to provide the special online anti-oxidation device for the cathode roller, which has the advantages of compact structure, unique sealing mode and good effect; the on-line anti-oxidation device is used for on-line anti-oxidation of the cathode roller on the foil forming machine.)

1. The special online anti-oxidation device for the cathode roller is characterized by comprising an isolation cover (1) which covers the front side of a stripping roller along the rotation direction of the cathode roller, wherein a plurality of air inlet joints (2) are distributed on the upper surface of the isolation cover (1), and the air inlet joints (2) are connected with an external compressed nitrogen source pipeline; a lifting translation mechanism (3) is connected to the near end part of one end of the isolation cover (1) far away from the stripping roller;

adjustable isolation components (4) are respectively arranged at the upper end and the lower end of the isolation cover (1) opposite to the roll surface of the cathode roll, and the distance between the free end of each adjustable isolation component (4) and the roll surface of the cathode roll is 0.8-1.2 mm;

the left end and the right end of the isolation hood (1) are provided with dynamic sealing components (5) matched with the end faces of the two sides of the cathode roller, the isolation hood (1) is matched with the dynamic sealing components (5) through adjustable isolation components (4), a sealing cavity (6) with openings of 0.8-1.2mm in the upper end and the lower end is formed between the isolation hood (1) and the cathode roller, nitrogen is filled in the sealing cavity (6), and the pressure intensity of the nitrogen in the sealing cavity (6) is 0.1-0.3Mpa stronger than the atmospheric pressure outside the sealing cavity (6).

2. The special online anti-oxidation device for the cathode roller according to claim 1, wherein the lifting translation mechanism (3) comprises a rodless cylinder (3a) fixed on an operating platform at the side of the cathode roller along the horizontal direction, a first abdicating long hole (3b) is arranged on the operating platform at the side of the rodless cylinder (3a), an H-shaped mounting seat (3c) is arranged above the first abdicating long hole (3b), a lifting cylinder (3d) is arranged in a groove at the lower end of the mounting seat (3c) along the vertical direction, and the free end of a piston rod of the lifting cylinder (3d) passes through the mounting seat (3c) and is connected with an L-shaped connecting block (3e) positioned at the upper side of the mounting seat (3 c);

guide holes are respectively formed in the mounting seats (3c) on the two sides of the lifting cylinder (3d), guide rods (3f) penetrate through the guide holes, and the upper ends of the guide rods (3f) are fixedly connected with the L-shaped connecting blocks (3 e); the isolation cover (1) is connected with the L-shaped connecting block (3 e).

3. The special online anti-oxidation device for the cathode roller according to claim 2, wherein a rotating shaft (3g) corresponding to the L-shaped connecting block (3e) is fixedly welded at two ends of the isolation cover (1), and a shaft seat (3h) matched with the rotating shaft (3g) is arranged on the L-shaped connecting block (3 e); a manual operating handle (3i) is arranged on the upper surface of the isolation cover (1) at the side edge of the rotating shaft (3 g);

a limit block (3j) is fixedly connected to the rotating shaft (3g) between the isolation cover (1) and the L-shaped connecting block (3e), two limit columns (3k) matched with the limit block (3j) are welded to the side face of the L-shaped connecting block (3e) close to one side of the isolation cover (1), and the limit columns (3k) are respectively located on two sides of the rotating shaft (3 g);

when the limiting block (3j) is contacted with a limiting column (3k) close to the axis of the cathode roller, the isolation cover (1) covers the surface of the cathode roller; when the limiting block (3j) is contacted with the limiting column (3k) far away from the axis of the cathode roller, the isolation cover (1) is in an open state.

4. The special online anti-oxidation device for the cathode roller according to claim 1, wherein an installation notch (1a) is formed in one end, close to the stripping roller, of the upper surface of the isolation cover (1), and the length of the installation notch (1a) is the same as the inner width of the isolation cover (1);

the adjustable isolation assembly (4) comprises an isolation plate, the isolation plate is composed of an adjusting plate (4a) and a sealing plate (4b) which are mutually connected in a V shape, and the free end of the adjusting plate (4a) is hinged to the upper surface of the isolation cover (1) on the side edge of the installation notch (1 a);

a silica gel sheet (4c) is connected to the free end of the sealing plate (4b) along the length direction, and the length of the silica gel sheet (4c) is the same as that of the sealing plate (4 b);

a spacing fine adjustment component (7) and a self-tensioning component (8) are arranged between the adjusting plate (4a) and the isolation cover (1), and the spacing between the silica gel sheet (4c) and the roller surface of the cathode roller is 0.8-1.2mm through the matching of the spacing fine adjustment component (7) and the self-tensioning component (8);

an auxiliary sealing rubber strip (4d) is arranged on the inner top surface of the end part of the isolation cover (1) at the side edge of the sealing plate (4b), the free end of the auxiliary sealing rubber strip (4d) is in contact with the inner side surface of the sealing plate (4b), and the middle part of the auxiliary sealing rubber strip (4d) is always kept in an upwarping state.

5. The special online anti-oxidation device for the cathode roller according to claim 4, wherein the spacing fine adjustment assembly (7) comprises an adjustment wedge block (7a) clamped between the adjustment plate (4a) and the isolation cover (1), a positioning seat (7b) is arranged on the isolation cover (1) outside the hinged end of the adjustment plate (4a), and a fine adjustment screw rod (7c) is in threaded connection with the positioning seat (7b) along the horizontal direction; one end of the fine adjustment screw rod (7c) is rotatably connected with the adjusting wedge block (7a) through a bearing (7d), the other end of the fine adjustment screw rod is welded with an outer hexagonal operation nut (7e), and at least two anti-loosening nuts (7f) are arranged on the fine adjustment screw rods (7c) on two sides of the positioning seat (7 b).

6. The special online anti-oxidation device for the cathode roller according to claim 4, wherein a second abdicating long hole (4e) matched with the self-tensioning assembly (8) is formed in the adjusting plate (4a), the self-tensioning assembly (8) comprises a hinged seat (8a) arranged at the end part of the upper surface of the isolation cover (1), a connecting rod (8b) is hinged to the hinged seat (8a), and a sliding seat (8c), a first tensioning spring (8d), a gasket (8e) and an adjusting screw (8f) are sequentially arranged on the connecting rod (8b) positioned on the outer side of the adjusting plate (4a) from bottom to top; a thread part matched with the adjusting screw (8f) is formed at the free end of the connecting rod (8 b); when the spacing fine adjustment assembly (7) acts, the sliding seat (8c) slides correspondingly relative to the adjusting plate (4a), so that the connecting rod (8b) and the adjusting plate (4a) are always kept in a vertical state.

7. The special online anti-oxidation device for the cathode roller according to claim 6, wherein the sliding seat (8c) comprises a seat body (8g) sleeved on the periphery of the connecting rod (8b), a plurality of mounting counter bores (8h) are distributed at intervals at the bottom of the seat body (8g) at two sides of the second abdicating long hole (4e) along the length direction of the second abdicating long hole (4e), second tensioning springs (8i), ball seats (8j) and balls (8k) are sequentially arranged in the mounting counter bores (8h) from inside to outside, a positioning plate (8l) corresponding to each mounting counter bore (8h) is fixedly connected to the bottom of the seat body (8g) through screws, and limiting through holes (8m) corresponding to each ball (8k) are formed in the positioning plate (8 l); guide grooves matched with the balls (8k) are formed on the adjusting plates (4a) on two sides of the second abdicating long hole (4 e).

8. The special online anti-oxidation device for the cathode roller according to claim 4, wherein an air extraction opening (4f) in a flat shape is integrally formed on the outer side surface of the sealing plate (4b), and the air extraction opening (4f) is connected with an external tail gas treatment system pipeline.

9. The special online anti-oxidation device for the cathode roller according to claim 1, wherein PVC rings (9) are connected to two ends of the roller surface of the cathode roller, horizontal sealing plates (1b) are formed by bending free ends of side plates at the left end and the right end of the isolation cover (1), and the free ends of the horizontal sealing plates (1b) extend to contact parts of the PVC rings (9) and the cathode roller; a receiving groove (1c) is formed at the free end of the horizontal sealing plate (1 b);

the dynamic sealing assembly (5) comprises a graphite packing (5a) with the front end face attached to the PVC ring (9) and the lower end face attached to the horizontal sealing plate (1b), and a plurality of automatic pressing assemblies (10) connected with the graphite packing (5a) are distributed on the side plate of the isolation cover (1) at intervals in the length direction;

the automatic pressing assembly (10) comprises a connecting ring (10a) welded on the side wall of the isolation cover (1), a guide sliding seat is arranged in the connecting ring (10a), the guide sliding seat is composed of a guide part (10b) sleeved with the connecting ring (10a) and a connecting part (10c) which is integrally formed with the guide part (10b) and penetrates through the isolation cover (1) to be opposite to the graphite packing (5a), and a abdicating through hole matched with the connecting part (10c) is formed in the side wall of the isolation cover (1); a mounting plate (10d) for fixing the graphite packing (5a) is welded at the free end of the connecting part (10 c);

an adjusting end cover (10e) is connected to the outer wall of the connecting ring (10a) in a threaded mode, a positioning groove (10f) is formed in the center of the inner bottom of the adjusting end cover (10e), a pressure sensor (10g) is arranged in the positioning groove (10f), and a third tensioning spring (10h) is clamped between the pressure sensor (10g) and the guide sliding seat.

10. The special online anti-oxidation device for the cathode roller according to claim 1, wherein an end face of the guide sliding seat opposite to a third tensioning spring (10h) is provided with a containing groove (10i), and one end of the third tensioning spring (10h) is located in the containing groove (10 i); an observation rod (11) is arranged on the end face of the guide sliding seat on the side of the containing groove (10i), and scale marks are arranged on the side wall of the observation rod (11).

Technical Field

The invention relates to an online protection structure of a cathode roller, in particular to an online anti-oxidation device special for the cathode roller.

Background

The electrolytic copper foil is an important material for manufacturing Copper Clad Laminate (CCL), Printed Circuit Board (PCB) and lithium ion battery. In the rapid development of the electronic information industry, the electrolytic copper foil is called a "neural network" for signal and power transmission and communication of electronic products. Since 2002, the production value of printed circuit boards in China has gone beyond the third world, and the copper clad laminate serving as a substrate material of the PCB also becomes the third world production country. Therefore, the electrolytic copper foil industry in China has a rapid development in recent years.

The foil forming machine is a key device for preparing electrolytic copper foil and mainly comprises an anode tank and a cathode roller which are matched with each other. The surface flatness of the cathode roll is the most basic element for ensuring the quality of the electrolytic copper foil. In the actual production process, because the rotating speed of the cathode roller is low during work, after the copper foil is stripped, a part of the cathode roller is exposed in the air for a long time, oxidation is easy to occur to form an oxidation layer, the generation of the electrolytic copper foil is influenced, and the product quality is unstable.

Disclosure of Invention

The invention aims to provide the special online anti-oxidation device for the cathode roller, which has a compact structure, a unique sealing mode and a good effect, aiming at the defects of the prior art.

The technical scheme of the invention is realized as follows: an online anti-oxidation device special for a cathode roller comprises an isolation cover which covers the front side of a stripping roller along the rotation direction of the cathode roller, wherein a plurality of air inlet joints are distributed on the upper surface of the isolation cover and are connected with an external compressed nitrogen source pipeline; a lifting translation mechanism is connected to the near end part of one end of the isolation cover far away from the stripping roller;

adjustable isolation components are respectively arranged at the upper end and the lower end of the isolation cover opposite to the roll surface of the cathode roll, and the distance between the free end of each adjustable isolation component and the roll surface of the cathode roll is 0.8-1.2 mm;

and dynamic sealing assemblies matched with the end surfaces of the two sides of the cathode roller are arranged at the left end and the right end of the isolation cover, a sealing cavity with openings of 0.8-1.2mm at the upper end and the lower end is formed between the isolation cover and the cathode roller through the matching of the adjustable isolation assemblies and the dynamic sealing assemblies, nitrogen is filled in the sealing cavity, and the pressure intensity of the nitrogen in the sealing cavity is 0.1-0.3MPa greater than the atmospheric pressure outside the sealing cavity.

In the special online anti-oxidation device for the cathode roller, the lifting translation mechanism comprises a rodless cylinder fixed on an operation table on the side edge of the cathode roller along the horizontal direction, a first abdicating long hole is formed in the operation table on the side edge of the rodless cylinder, a mounting seat in an H shape is arranged above the first abdicating long hole, a lifting cylinder is arranged in a groove at the lower end of the mounting seat along the vertical direction, and the free end of a piston rod of the lifting cylinder penetrates through the mounting seat and is connected with an L-shaped connecting block on the upper side of the mounting seat.

Guide holes are respectively formed in the mounting seats on the two sides of the lifting cylinder, guide rods penetrate through the guide holes, and the upper ends of the guide rods are fixedly connected with the L-shaped connecting blocks; the isolation cover is connected with the L-shaped connecting block.

In the above on-line anti-oxidation device special for the cathode roller, two ends of the isolation cover are respectively fixedly welded with a rotating shaft corresponding to the L-shaped connecting block 15e, and the L-shaped connecting block is provided with a shaft seat matched with the rotating shaft; and a manual operating handle is arranged on the upper surface of the isolation cover on the side edge of the rotating shaft.

The limiting block is fixedly connected to the rotating shaft between the isolation cover and the L-shaped connecting block, two limiting columns matched with the limiting block are welded to the side face of the L-shaped connecting block close to one side of the isolation cover, and the limiting columns are located on two sides of the rotating shaft respectively.

When the limiting block is contacted with the limiting column close to the axis of the cathode roller, the isolation cover covers the surface of the cathode roller; when the limiting block is contacted with the limiting column far away from the axis of the cathode roller, the isolation cover is in an open state.

In the online anti-oxidation device special for the cathode roller, the mounting notch is formed in one end, close to the stripping roller, of the upper surface of the isolation hood, and the length of the mounting notch is the same as the inner width of the isolation hood.

The adjustable isolation assembly comprises an isolation plate, the isolation plate is composed of an adjusting plate and a sealing plate which are mutually connected in a V shape, and the free end of the adjusting plate is hinged to the upper surface of the isolation cover on the side edge of the installation gap.

The free end of the sealing plate is connected with a silica gel sheet along the length direction, and the length of the silica gel sheet is the same as that of the sealing plate.

And a spacing fine adjustment assembly and a self-tensioning assembly are arranged between the adjusting plate and the isolation cover, and the spacing between the silica gel sheet and the roller surface of the cathode roller is 0.8-1.2mm through the matching of the spacing fine adjustment assembly and the self-tensioning assembly.

And an auxiliary sealing rubber strip is arranged on the inner top surface of the end part of the isolation cover on the side edge of the sealing plate, the free end of the auxiliary sealing rubber strip is in contact with the inner side surface of the sealing plate, and the middle part of the auxiliary sealing rubber strip is always kept in an upward arching state.

In the online anti-oxidation device special for the cathode roller, the distance fine-tuning assembly comprises an adjusting wedge block clamped between an adjusting plate and an isolating cover, a positioning seat is arranged on the isolating cover outside the hinged end of the adjusting plate, and a fine-tuning screw rod is connected to the positioning seat along the horizontal direction through threads; one end of the fine adjustment screw rod is rotatably connected with the adjusting wedge block through a bearing, an outer hexagonal operation nut is welded at the other end of the fine adjustment screw rod, and at least two anti-loosening nuts are arranged on the fine adjustment screw rods on the two sides of the positioning seat.

In the online anti-oxidation device special for the cathode roller, the adjusting plate is provided with a second abdicating long hole matched with the self-tensioning assembly, the self-tensioning assembly comprises a hinge seat arranged at the end part of the upper surface of the isolation cover, the hinge seat is hinged with a connecting rod, and the connecting rod positioned on the outer side of the adjusting plate is sequentially provided with a sliding seat, a first tensioning spring, a gasket and an adjusting screw from bottom to top; a thread part matched with the adjusting screw is formed at the free end of the connecting rod; when the spacing fine adjustment assembly acts, the sliding seat slides correspondingly relative to the adjusting plate, so that the connecting rod and the adjusting plate are always kept in a vertical state.

In the online anti-oxidation device special for the cathode roller, the sliding seat comprises a seat body sleeved on the periphery of the connecting rod, a plurality of mounting counter bores are distributed at intervals at the bottom of the seat body at two sides of the second abdicating long hole along the length direction of the second abdicating long hole, second tensioning springs, ball seats and balls are sequentially arranged in the mounting counter bores from inside to outside, positioning plates corresponding to the mounting counter bores are fixedly connected to the bottom of the seat body through screws, and limiting through holes corresponding to the balls one by one are formed in the positioning plates; and guide grooves matched with the balls are formed on the adjusting plates on two sides of the second abdicating long hole.

In the online anti-oxidation device special for the cathode roller, the outer side surface of the sealing plate is integrally formed with a flat air exhaust opening, and the air exhaust opening is connected with an external tail gas treatment system pipeline.

In the special online anti-oxidation device for the cathode roller, the two ends of the roller surface of the cathode roller are connected with PVC rings, the free ends of the side plates at the left end and the right end of the isolation cover are bent to form horizontal sealing plates, and the free ends of the horizontal sealing plates extend to contact parts of the PVC rings and the cathode roller; a receiving groove is formed at the free end of the horizontal sealing plate.

The dynamic sealing assembly comprises a graphite packing, wherein the front end face of the graphite packing is attached to the PVC ring, the lower end face of the graphite packing is attached to the horizontal sealing plate, and a plurality of automatic pressing assemblies connected with the graphite packing are distributed on the side plate of the isolation cover at intervals in the length direction.

The automatic pressing assembly comprises a connecting ring welded on the side wall of the isolation cover, a guide sliding seat is arranged in the connecting ring, the guide sliding seat consists of a guide part thrown with the connecting ring sleeve and a connecting part which is integrally formed with the guide part and penetrates through the isolation cover to be opposite to the graphite packing, and a abdicating through hole adaptive to the connecting part is arranged on the side wall of the isolation cover; and the free end of the connecting part is welded with an installation plate for fixing the graphite packing.

The outer wall of the connecting ring is in threaded connection with an adjusting end cover, a positioning groove is formed in the center of the bottom in the adjusting end cover, a pressure sensor is arranged in the positioning groove, and a third tensioning spring is clamped between the pressure sensor and the guide sliding seat.

In the above on-line anti-oxidation device special for the cathode roll, an accommodating groove is formed in an end surface of the guide sliding seat opposite to the third tensioning spring, and one end of the third tensioning spring is located in the accommodating groove; an observation rod is arranged on the end face of the guide sliding seat on the side edge of the containing groove, and scale marks are arranged on the side wall of the observation rod.

After the structure is adopted, firstly, a large-area coverage is formed in the exposed area of the cathode roller through the isolation cover, then a micro gap of 0.8-1.2mm is formed at two ends opposite to the surface of the cathode roller, meanwhile, the end surfaces opposite to the left end and the right end of the cathode roller are sealed by adopting the dynamic sealing assembly, a sealing cavity with openings of 0.8-1.2mm at the upper end and the lower end is formed between the isolation cover and the cathode roller, and finally, the nitrogen pressure in the sealing cavity is enabled to be 0.1-0.3Mpa greater than the atmospheric pressure outside the sealing cavity by continuously filling nitrogen. Therefore, absolute sealing of most exposed surfaces of the cathode roller is realized, contact with oxygen is completely isolated, and oxidation of the surface of the cathode roller is greatly slowed down. Since the sealed chamber has a very small gap and the pressure of the charged nitrogen is an optimum value obtained through experiments, the leakage amount is very small and the external environment is hardly influenced. Through long-time field use and test, the oxidation rate of the surface of the cathode roller is reduced to 5-8% of the original oxidation rate, and the effect is very obvious.

Drawings

The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

FIG. 4 is a schematic structural view of the dynamic seal assembly of the present invention;

fig. 5 is a schematic structural diagram of the lifting translation mechanism of the present invention.

In the figure: 1. an isolation cover; 1a, installing a notch; 1b, horizontal sealing plates; 1c, a containing groove; 2. an air inlet joint; 3. a lifting translation mechanism; 3a, a rodless cylinder; 3b, a first abdicating long hole; 3c, a mounting seat; 3d, lifting the air cylinder; 3e, an L-shaped connecting block; 3f, a guide rod; 3g, a rotating shaft; 3h, shaft seat; 3i, a manual operating handle; 3j, a limiting block; 3k, a limiting column; 4. an adjustable isolation assembly; 4a, an adjusting plate; 4b, a sealing plate; 4c, a silica gel sheet; 4d, auxiliary sealing rubber strips; 4e, a second abdicating long hole; 4f, an air extraction opening; 5. a dynamic seal assembly; 5a, graphite packing; 6. sealing the chamber; 7. a pitch fine adjustment assembly; 7a, adjusting a wedge block; 7b, a positioning seat; 7c, fine adjustment of a screw rod; 7d, a bearing; 7e, an outer hexagonal operation nut; 7f, a loosening-preventing nut; 8. a self-tensioning assembly; 8a, a hinge seat; 8b, a connecting rod; 8c, a sliding seat; 8d, a first tensioning spring; 8e, a gasket; 8f, adjusting screws; 8g, a seat body; 8h, mounting a counter bore; 8i, a second tensioning spring; 8j, a ball seat; 8k, a ball; 8l, positioning plate; 8m, limiting through holes; 9. a PVC ring; 10. an automatic compression assembly; 10a, a connecting ring; 10b, a guide part; 10c, a connecting part; 10d, mounting plates; 10e, adjusting the end cover; 10f, positioning a groove; 10g, a pressure sensor; 10h, a third tensioning spring; 10i, a containing groove; 11. an observation rod; 12. a cathode roll; 13. and (4) peeling off the roller.

Detailed Description

Referring to fig. 1 to 5, the special online anti-oxidation device for the cathode roller comprises an isolation cover 1 which covers the front side of a stripping roller along the rotation direction of the cathode roller, wherein a plurality of air inlet joints 2 are distributed on the upper surface of the isolation cover 1, and the air inlet joints 2 are connected with an external compressed nitrogen source pipeline; and a lifting translation mechanism 3 is connected to the proximal end part of one end of the isolation cover 1 far away from the stripping roller.

The upper end and the lower end of the isolation cover 1 opposite to the roller surface of the cathode roller are respectively provided with an adjustable isolation component 4, and the distance between the free end of the adjustable isolation component 4 and the roller surface of the cathode roller is 0.8-1.2 mm.

The left end and the right end of the isolation hood 1 are provided with dynamic sealing components 5 matched with the end surfaces of the two sides of the cathode roller, a sealing chamber 6 with openings of 0.8-1.2mm at the upper end and the lower end is formed between the isolation hood 1 and the cathode roller through the matching of the adjustable isolation components 4 and the dynamic sealing components 5, the sealing chamber 6 is filled with nitrogen, and the pressure intensity of the nitrogen in the sealing chamber 6 is 0.1-0.3Mpa greater than the atmospheric pressure outside the sealing chamber 6. The pressure of the sealed chamber is kept slightly higher than the external pressure by continuously filling the sealed chamber with nitrogen. The numerical value is obtained through experiments, under the pressure, external air can be completely prevented from entering the sealed cavity, and meanwhile, internal nitrogen can overflow at a low speed, so that the nitrogen consumption is saved, and the anti-oxidation of the cathode roller is realized.

And a pressure sensor or a pressure gauge communicated with the inside is arranged on the isolation cover. Or a pressure gauge is arranged on the air inlet joint or a pipeline connected with the air inlet joint, and the purpose that the nitrogen pressure in the sealed chamber 6 is 0.1-0.3Mpa greater than the atmospheric pressure outside the sealed chamber 6 can be realized by controlling the numerical value on the pressure gauge. This is easily conceivable by the person skilled in the art on the basis of the above-described disclosure.

Referring to fig. 5, in this embodiment, the lifting and translating mechanism 3 includes a rodless cylinder 3a fixed on the operating platform on the side of the cathode roller along the horizontal direction, a first abdicating long hole 3b is provided on the operating platform on the side of the rodless cylinder 3a, an installation seat 3c in an H shape is provided above the first abdicating long hole 3b, a lifting cylinder 3d is provided in the groove at the lower end of the installation seat 3c along the vertical direction, and the free end of the piston rod of the lifting cylinder 3d passes through the installation seat 3c and is connected with an L-shaped connection block 3e located on the upper side of the installation seat 3 c.

Guide holes are respectively formed in the mounting seats 3c on the two sides of the lifting cylinder 3d, guide rods 3f penetrate through the guide holes, and the upper ends of the guide rods 3f are fixedly connected with the L-shaped connecting blocks 3 e; the isolation cover 1 is connected with an L-shaped connecting block 3 e.

When the isolation cover needs to be moved away, the lifting cylinder is lifted for a certain distance to enable the bottom in the isolation cover to be higher than the upper end surface of the cathode roller, and then the rodless cylinder is started to translate to avoid touching the cathode roller during translation. The specific lifting distance of the lifting cylinder is adjusted according to specific conditions.

It is further preferred that the separation of the cage from the cathode roll is achieved more quickly, facilitating a fast reaction operation when tearing the edge. Two ends of the isolation cover 1 are respectively fixedly welded with a rotating shaft 3g corresponding to the L-shaped connecting block 3e, and the L-shaped connecting block 3e is provided with a shaft seat 3h matched with the rotating shaft 3 g; a manual operating handle 3i is arranged on the upper surface of the isolation cover 1 at the side of the rotating shaft 3 g.

Fixedly connected with stopper 3j on pivot 3g between cage 1 and L shape connecting block 3e, the welding has two spacing posts 3k with stopper 3j matched with on the L shape connecting block 3e side near cage 1 one side, spacing post 3k is located pivot 3g both sides respectively.

When the limiting block 3j is contacted with a limiting column 3k close to the axis of the cathode roller, the isolation cover 1 covers the surface of the cathode roller; when the limiting block 3j contacts with the limiting column 3k far away from the axis of the cathode roller, the isolation cover 1 is in an open state.

Preferably, the upper surface of the isolation cover 1 is provided with an installation notch 1a at one end close to the peeling roller, and the length of the installation notch 1a is the same as the inner width of the isolation cover 1. Namely, the side surface of the end isolation cover is reserved, and the top surface is completely removed, so that the subsequent sealing is facilitated.

The adjustable isolation assembly 4 comprises an isolation plate, the isolation plate is composed of an adjusting plate 4a and a sealing plate 4b which are mutually connected in a V shape, and the free end of the adjusting plate 4a is hinged to the upper surface of the isolation cover 1 on the side edge of the installation notch 1 a.

A silicone piece 4c is connected to the free end of the sealing plate 4b in the longitudinal direction, and the length of the silicone piece 4c is the same as that of the sealing plate 4 b. The free end is provided with a silica gel sheet, and the purpose is to avoid accidental collision between the end part of the sealing plate and the cathode roller.

A spacing fine adjustment component 7 and a self-tensioning component 8 are arranged between the adjusting plate 4a and the isolation cover 1, and the spacing between the silica gel sheet 4c and the roller surface of the cathode roller is 0.8-1.2mm through the matching of the spacing fine adjustment component 7 and the self-tensioning component 8.

An auxiliary sealing rubber strip 4d is arranged on the inner top surface of the end part of the isolation cover 1 on the side edge of the sealing plate 4b, the free end of the auxiliary sealing rubber strip 4d is in contact with the inner side surface of the sealing plate 4b, and the middle part of the auxiliary sealing rubber strip 4d always keeps an upward arching state. This allows the gap between the seal plate and the end of the cage to be completely sealed without interfering with movement of the seal plate.

The design of the adjustable isolation assembly is mainly used for keeping the distance between the silica gel sheet and the roller surface of the cathode roller. Because the cathode roller regularly can carry out polishing and grinding to repair, its excircle can dwindle gradually, if the cage is fixed knot structure, then the interval between the two can be bigger and bigger. And the nitrogen consumption is obviously increased, and meanwhile, the overflowing nitrogen quantity is also obviously increased, so that the cost is increased, and the environmental safety is not facilitated.

Referring to fig. 2, it is further preferable that the distance fine-tuning assembly 7 includes an adjusting wedge 7a interposed between the adjusting plate 4a and the shielding case 1, a positioning seat 7b is disposed on the shielding case 1 outside the hinged end of the adjusting plate 4a, and a fine-tuning screw rod 7c is screwed on the positioning seat 7b along the horizontal direction; one end of the fine adjustment screw rod 7c is rotatably connected with the adjusting wedge 7a through a bearing 7d, an outer hexagonal operation nut 7e is welded at the other end of the fine adjustment screw rod 7c, and at least two anti-loosening nuts 7f are arranged on the fine adjustment screw rods 7c on two sides of the positioning seat 7 b.

Meanwhile, a second abdicating long hole 4e matched with the self-tensioning assembly 8 is formed in the adjusting plate 4a, the self-tensioning assembly 8 comprises a hinge seat 8a arranged at the end part of the upper surface of the isolation cover 1, a connecting rod 8b is hinged to the hinge seat 8a, and a sliding seat 8c, a first tensioning spring 8d, a gasket 8e and an adjusting screw 8f are sequentially arranged on the connecting rod 8b positioned on the outer side of the adjusting plate 4a from bottom to top; a thread part matched with the adjusting screw 8f is formed at the free end of the connecting rod 8 b; when the fine pitch adjustment assembly 7 is actuated, the sliding seat 8c slides correspondingly relative to the adjustment plate 4a, so that the connecting rod 8b is always perpendicular to the adjustment plate 4 a.

The function of sliding seat is to guarantee that connecting rod and regulating plate are perpendicular all the time, avoids causing the distortion of position because the card of spring removal is pause when adjusting, and in subsequent working process, the spring takes place the displacement because the microvibration suddenly again, causes the change of silica gel piece and cathode roll surface distance, because this interval is very little, consequently must guarantee from the uniqueness of tensioning assembly position when adjusting, avoids appearing the secondary displacement condition.

Referring to fig. 3, in the present embodiment, the sliding seat 8c includes a seat body 8g sleeved on the periphery of the connecting rod 8b, a plurality of mounting counter bores 8h are distributed at intervals at the bottom of the seat body 8g at two sides of the second abdicating long hole 4e along the length direction of the second abdicating long hole 4e, a second tensioning spring 8i, a ball seat 8j and balls 8k are sequentially arranged in the mounting counter bores 8h from inside to outside, a positioning plate 8l corresponding to each mounting counter bore 8h is fixedly connected to the bottom of the seat body 8g through a screw, and a limiting through hole 8m corresponding to each ball 8k one to one is formed on the positioning plate 8 l; guide grooves are formed in the adjusting plate 4a on both sides of the second abdicating long hole 4e to be engaged with the balls 8 k.

Preferably, in order to avoid the influence of nitrogen leakage on the environment, a flat air exhaust port 4f is integrally formed on the outer side surface of the sealing plate 4b, and the air exhaust port 4f is connected with an external tail gas treatment system through a pipeline. Therefore, the negative pressure of the air exhaust port can ensure the complete extraction of the overflowing nitrogen, provide suction for the opening part of the sealed cavity and further ensure that air cannot enter the sealed cavity.

Referring to fig. 4, in this embodiment, two ends of the roll surface of the cathode roll are connected with PVC rings 9, the free ends of the side plates at the left and right ends of the shielding case 1 are bent to form horizontal sealing plates 1b, and the free ends of the horizontal sealing plates 1b extend to contact portions of the PVC rings 9 and the cathode roll; a receiving recess 1c is formed at the free end of the horizontal sealing plate 1 b. The dynamic seal assembly 5 comprises a graphite packing 5a, the front end face of the graphite packing is attached to the PVC ring 9, the lower end face of the graphite packing is attached to the horizontal seal plate 1b, and a plurality of automatic pressing assemblies 10 connected with the graphite packing 5a are distributed on the side plate of the isolation cover 1 at intervals in the length direction. The accommodating groove can accommodate trace powder generated by friction of the graphite packing and the PVC ring, and the powder is prevented from falling into the anode groove. Meanwhile, the graphite packing is matched with the PVC ring and the horizontal sealing plate, so that the side surface between the isolation cover and the cathode roller can be dynamically sealed. Further reducing the overflow of nitrogen.

Preferably, the automatic pressing assembly 10 comprises a connecting ring 10a welded on the side wall of the isolation cover 1, a guide sliding seat is arranged in the connecting ring 10a, the guide sliding seat consists of a guide part 10b sleeved with the connecting ring 10a and a connecting part 10c which is integrally formed with the guide part 10b and penetrates through the isolation cover 1 to be opposite to the graphite packing 5a, and a abdicating through hole matched with the connecting part 10c is arranged on the side wall of the isolation cover 1; and a mounting plate 10d for fixing the graphite packing 5a is welded at the free end of the connecting part 10 c.

An adjusting end cover 10e is connected to the outer wall of the connecting ring 10a in a threaded mode, a positioning groove 10f is formed in the center of the inner bottom of the adjusting end cover 10e, a pressure sensor 10g is arranged in the positioning groove 10f, and a third tensioning spring 10h is arranged between the pressure sensor 10g and the guide sliding seat in a clamped mode.

Further preferably, an accommodating groove 10i is formed in an end surface of the guide sliding seat opposite to the third tensioning spring 10h, and one end of the third tensioning spring 10h is located in the accommodating groove 10 i; an observation rod 11 is arranged on the end face of the guide sliding seat at the side of the containing groove 10i, and scale marks are arranged on the side wall of the observation rod 11. The design of storage tank mainly is in order to guarantee under the unchangeable circumstances that enlarges of overall structure volume, can use longer third tensioning spring, provides more stable tension output to graphite packing, guarantees the leakproofness. The observation rod with the scale marks can facilitate operators to observe the allowance of the internal graphite packing in real time, and assists in knowing the tension degree of the third tensioning spring. Of course, the pressure value output by each third tension spring to the graphite packing can be observed in real time in the system through the pressure sensor.

When in use, firstly, the separation cover is covered on the surface of the cathode roller according to the design scheme. And then adjusting the distance between the silica gel sheet on the adjustable isolation assembly at the upper end and the lower end and the roller surface of the cathode roller, wherein the operation is manually finished. And then according to the pre-designed pressure value, the tension of the third tensioning spring is adjusted by adjusting the connection depth between the connecting ring and the adjusting end cover. Then, a predetermined amount of nitrogen gas is continuously supplied into the shield cover to sufficiently make the difference between the inside and outside pressures. Thus, the sealing operation of the surface of the cathode roller is completed, and the purpose of oxidation resistance is achieved.

When the isolation cover needs to be opened, the isolation cover is lifted for a certain distance and then horizontally translated, and then the isolation cover is manually turned and opened according to specific conditions. Such as servicing or tearing edges, etc.

The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.