Silver-copper composite strip hot rolling device and hot rolling method
Technical Field
The invention belongs to the technical field of silver-copper composite strip hot rolling, and particularly relates to a silver-copper composite strip hot rolling device and a hot rolling method.
Background
The silver-copper composite metal strip is a composite material formed by firmly combining two layers of silver and copper along the whole contact surface. The silver-copper composite strip integrates excellent electrical performance, oxidation resistance and good physical performance of copper of fine-grain silver, and elements made of the silver-copper composite metal strip serving as contact materials are widely applied to various electrical appliances such as switch connectors, relays and the like.
When a silver strip is compounded with a copper strip, a hot rolling process is generally adopted, and in the hot rolling process, adhesion abrasion exists on a roller, wherein the adhesion abrasion mainly easily occurs when metals with strong adhesion such as titanium, aluminum, copper and alloys thereof are rolled, and consequently pecking marks appear on the surface of a rolled piece or indentation is formed on the surface of the rolled piece.
The hot rolling device for producing the copper-silver composite strip comprises a fixing plate, wherein the top of the fixing plate is fixedly connected with a hot rolling frame, the back surface of the hot rolling frame is provided with a driving motor, the output end of the driving motor penetrates through the hot rolling frame and is fixedly connected with a rotating rod, the right side of the rotating rod is movably connected with the joint of the hot rolling frame, and the surface of the rotating rod is fixedly connected with a driving roller. According to the utility model, through the rotating rod, the driving roller, the driving motor, the bearing sleeve, the cross rod, the auxiliary roller, the movable rod, the driving bevel gear, the transmission rod, the driven bevel gear, the moving plate, the screw rod and the screw block, the device can achieve the function of convenient adjustment and use, a user needs to carry out hot rolling on composite belts with different thicknesses under the influence of production processes in the operation process, the adjustment of the roll gap of the hot roller is inconvenient, and the production, operation and use problems of the user are not facilitated.
The hot roller of the device is not provided with a roller deslagging device, manual deslagging is needed for the hot roller before use, and the device is not convenient enough, meanwhile, when the copper strip is conveyed, due to the fact that equipment is long, the copper strip in the middle still has the phenomenon of sagging under the action of gravity despite the fact that the two ends are provided with the winding roller and the discharging roller, friction scratches are easily caused by contact with parts on the equipment, and the surfaces of the silver copper strip are damaged due to the fact that the two problems are both irradiated.
Disclosure of Invention
The invention aims to provide a silver-copper composite strip hot rolling device and a hot rolling method, which are used for solving the problems that in the background art, the surface of a bundling piece is marked by copper slag adhesion, manual deslagging is needed, the convenience is not enough, and meanwhile, when a copper strip is longer, the copper strip is easy to contact with an external device to cause surface scratch.
In order to achieve the above purpose, the invention adopts the following technical scheme:
A silver-copper composite belt hot rolling device comprises a workbench, a plurality of guide rollers, a height adjusting mechanism and a guide roller, wherein one side of the base is fixedly provided with a vertical plate, and the other side of the base is fixedly provided with a mounting plate;
The copper strip lifting device comprises a base, and is characterized in that an inverted L-shaped support is arranged on the upper surface of the base, a lifting mechanism for lifting a copper strip is arranged on one side of the support, an installation position for installing the lifting mechanism is arranged on the upper surface of the base, the lifting mechanism comprises a square cylinder, a lifting mechanism of the square cylinder is arranged in the support, and a lifting roller is rotatably connected to one side of the vertical plate; one side of the lifting roller is provided with two hot rollers, the silver-copper composite belt passes through the two hot rollers, one side of the mounting plate is provided with a transmission mechanism for driving the hot rollers, and one side of the hot rollers is provided with a copper slag removing mechanism of the hot rollers;
The copper slag removing mechanism comprises steel brushes, wherein one side of the vertical plate is provided with a horizontal displacement mechanism of the steel brushes, two groups of the steel brushes are arranged, and the two groups of the steel brushes are respectively positioned on one sides of the two hot rolls.
The silver strip hot rolling machine has the advantages that the silver strip can be covered on the surface of the copper strip from the upper side of the copper strip through the guide roller and the height adjusting mechanism of the guide roller, hot rolling and compounding can be achieved through the silver strip and the copper strip which enter the hot rolling roller together, mutual lamination between the silver strip and the copper strip is guaranteed, the middle part of the copper strip is lifted easily through the lifting mechanism, the silver strip and the copper strip after lamination are prevented from being integrally contacted with a base or external equipment, the surface damage rate of the silver copper strip can be reduced, and the two hot rollers are reversely rotated under the action of one driving through the transmission mechanism, and the silver copper strip is rolled. Through setting up the steel brush, when making steel brush and copper slag contact to under horizontal displacement mechanism's drive, sweep away the hot roll with the copper slag, solved among the background art copper slag and adhered the surface appearance indentation that causes pricking, need manual deslagging, it is not enough convenient, the copper strips is longer simultaneously, and easy and external device contact causes the problem of surface fish tail.
Preferably, the horizontal displacement mechanism comprises a fixed plate, the fixed plate is fixed on one side of the vertical plate, one end of the fixed plate is fixed with a guide rod, the other end of the fixed plate is rotationally connected with a displacement screw, and a driving motor for driving the displacement screw to rotate is arranged on the other side of the vertical plate.
The technical effect achieved by adopting the technical scheme is that the displacement screw is driven to rotate by the driving motor, so that the steel brush arranged on the guide rod and the displacement screw in the follow-up mode is driven, and the steel brush is ensured to clean copper slag.
Preferably, the horizontal displacement mechanism further comprises a rectangular strip-shaped movable plate, the guide rod penetrates through the movable plate and is in sliding connection with the movable plate, the displacement screw penetrates through the movable plate and is in threaded connection with the movable plate, two groups of steel brushes are respectively fixed at two ends of the movable plate, the movable plate is longitudinally arranged, one end, close to a hot roller, of each steel brush is arc-shaped, a plurality of rollers are installed in an inner cavity of each square cylinder, and two ends of each roller are in rotary connection with inner walls of two sides of each square cylinder.
After the displacement screw rotates, the moving plate horizontally moves on the outer wall of the guide rod, and one side of the steel brush is arranged into an arc shape to enable the steel brush to be closer to the surface of the hot roller.
Preferably, the lifting mechanism comprises a plurality of rollers arranged in the inner cavity of the square cylinder, wherein two ends of each roller are rotatably connected with the inner walls of two sides of the square cylinder, the guide rod and the lifting screw rod penetrate through one end of the square cylinder and are in sliding connection with the square cylinder, the lifting screw rod penetrates through the other end of the square cylinder and is in threaded connection with the square cylinder, one end of the lifting screw rod is rotatably connected with the base, the other end of the lifting screw rod is rotatably connected with the transverse plate of the support, and the top of the lifting screw rod is fixedly provided with a knob.
The technical effect obtained by adopting the technical scheme is that the roller is arranged, when the barrel belt moves in the square barrel, the roller rolls, and the friction of the barrel belt can be reduced. When the knob is screwed, the lifting screw rotates, so that the square barrel in threaded connection with the lifting screw moves up and down under the limit of the guide rod, the middle part of the copper strip is lifted easily, the attached silver strip and the copper strip are prevented from being integrally contacted with the base or external equipment, and the surface damage rate of the silver-copper composite strip can be reduced.
Preferably, the installation position comprises a clamping groove, a threaded hole and a concave base, the bottom end of the support vertical plate is clamped in the clamping groove, the bottom end of the guide rod is in threaded connection with the threaded hole, the bottom end of the lifting screw is clamped in the base, the base is rotationally connected in the base, and a plurality of groups of installation positions are arranged.
The technical effect that adopts above-mentioned technical scheme to obtain is that through setting up the installation position, makes whole lifting mechanism be convenient for install on the base, and this mechanism can install a plurality of simultaneously according to the demand, and range and height can all be through the demand regulation, uses in a flexible way.
Preferably, the guide roller comprises a rotating rod and a limiting ring, the limiting rings are fixed on the outer wall of the rotating rod, two limiting rings on the outer wall of each rotating rod are respectively arranged, the two limiting rings are used for penetrating through silver strips, and one end of each rotating rod is rotationally connected with a rotating seat.
Preferably, the height adjusting mechanism comprises a sliding block, a sliding groove for the sliding block to move up and down is formed in one side of the vertical plate, the rotating seat is arranged in the sliding block, a rotating motor for driving the rotating seat to rotate is arranged on one side of the sliding block, a screw rod is rotationally connected to the top of the sliding block, and the top end of the screw rod penetrates through the vertical plate and is in threaded connection with the vertical plate.
The technical effect that adopts above-mentioned technical scheme to obtain is that when twisting the lead screw, the slider reciprocates in the spout to realize the reciprocating of guide roll, when starting the rotation motor, the guide roll rotates, through setting up a plurality of guide roll, the altitude mixture control of every guide roll alone sets up, is convenient for silver strip change direction and copper strips laminating under the effect of guide roll.
Preferably, a supporting roller is rotatably connected to one side of the vertical plate, and the supporting roller is located between the lifting roller and the hot roller.
Preferably, the driving mechanism comprises a driving gear and a driven gear, the driving gear and the driven gear are respectively fixed at one ends of two hot rolls, the driving gear is meshed with the driven gear, one end of one hot roll is provided with a hot rolling motor for driving the hot roll, and the hot rolling motor is fixed at one side of the vertical plate through screws.
Based on the silver-copper composite belt hot rolling device, the invention also provides a silver-copper composite belt hot rolling method, which comprises the following steps:
S1, putting a silver soldering strip with the thickness of 1.2mm into a multi-channel slitting machine with a winding function, cutting into a plurality of narrow strips with the width of 20mm, respectively conveying a copper strip with the thickness of 2mm with the width of 50mm and a silver strip cut into the narrow strips into a heating furnace with atmosphere protection under the action of an uncoiler, heating and preserving heat for 20 minutes under the argon protection at the temperature of 600 ℃, conveying the copper strip conveyed from the heat preserving furnace into a compound rolling mill for hot rolling after conveying and protecting the copper strip conveyed from the heat preserving furnace through a lifting mechanism;
S2, before a hot rolling mill penetrates into a strip, deslagging is carried out on the surface of a hot roller through a copper slag removing mechanism, after deslagging is finished, a silver belt is tightly attached to the upper surface of a copper belt under the limit of a conveying device, the silver belt and the copper belt enter the rolling mill together, the rotating speed of the hot rolling mill is adjusted to be 380m/min, the rolling force is 3000KN, the heating temperature is 650 ℃, the thickness of the strip is continuously tracked through a non-contact thickness gauge in the rolling process, and the speed of the hot rolling mill is adjusted under the rotating speed of 300-480 m/min, so that the composite strip is uniformly and finely rolled to be 0.1mm thick;
S3, the rolled composite strip enters an annealing furnace, is annealed for 3 minutes at 600 ℃, and the silver-copper composite strip after refined binding is reeled by a reeling machine.
Compared with the prior art, the silver-copper composite strip hot rolling device and the silver-copper composite strip hot rolling method provided by the invention have the following advantages:
1. according to the invention, the copper slag removing mechanism is arranged, when copper slag is adhered to the surface of the hot roller, the copper slag protrudes out of the surface of the hot roller to be in contact with the arc-shaped end of the steel brush, so that the steel brush is driven by the horizontal linear mechanism to directly strip the copper slag from the hot roller, and the copper slag on the surface of the hot roller can be prevented from damaging the surface of the composite belt when the copper belt and the silver belt are pressed by the hot roller, so that poor appearance and uneven thickness of a product are avoided, normal use of components is influenced, and the product quality is improved.
2. According to the copper strip lifting mechanism, the square barrel can lift the copper strip and plays a role in supporting the middle of the copper strip, the lifting mechanism is arranged in a structure so that the copper strip lifting mechanism is convenient to install with a base, the height of the square barrel can be adjusted through the lifting mechanism, the lifting position and the height of the copper strip can be automatically adjusted according to requirements, and the probability of scratch caused by contact friction between the copper strip and an external device can be reduced through the arrangement of the lifting mechanism.
Drawings
FIG. 1 is a block diagram of a method of the present invention;
FIG. 2 is an isometric view of the present invention;
FIG. 3 is a schematic view of the lifting mechanism of the present invention;
FIG. 4 is a schematic diagram of a copper slag removing mechanism according to the present invention;
FIG. 5 is a top view of the present invention;
fig. 6 is a side view of the present invention.
1, A base, 2, a vertical plate, 3, a mounting plate, 4, a guide roller, 5, a height adjusting mechanism, 6, a bracket, 7, a lifting mechanism, 8, a mounting position, 9, a lifting roller, 10, a hot roller, 11, a transmission mechanism, 12, a copper slag removing mechanism, 1201, a steel brush, 701, a square cylinder, 1202, a fixed plate, 1203, a guide rod, 1204, a displacement screw, 1205, a driving motor, 1206, a moving plate, 702 and a roller;
703. Lifting screw rods, 704, knobs, 705, guide rods, 801, clamping grooves, 802, threaded holes, 803, bases, 401, rotating rods, 402, limiting rings, 403, rotating seats, 501, sliding blocks, 502, sliding grooves, 503, rotating motors, 504, screw rods, 505, supporting rollers, 1101, driving gears, 1102, driven gears, 1103 and hot rolling motors.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a silver-copper composite strip hot rolling device as shown in figures 1-6, which comprises a workbench, and comprises a base 1, wherein one side of the base 1 is fixedly provided with a vertical plate 2, the other side of the base 1 is fixedly provided with a mounting plate 3, one side of the vertical plate 2 is provided with a plurality of guide rollers 4 for guiding silver strips, the vertical plate 2 is internally provided with a height adjusting mechanism 5 of the guide rollers 4, the upper surface of the base 1 is provided with an inverted L-shaped bracket 6, one side of the bracket 6 is provided with a lifting mechanism 7 for lifting copper strips, the upper surface of the base 1 is provided with a mounting position 8 for mounting the lifting mechanism 7, one side of the vertical plate 2 is rotatably connected with lifting rollers 9, one side of the lifting rollers 9 is provided with hot rollers 10, one side of the mounting plate 3 is provided with a transmission mechanism 11 for driving the hot rollers 10, and one side of the hot rollers 10 is provided with a copper slag removing mechanism 12 for the hot rollers 10.
Through setting up silver strip guide roll 4, and its altitude mixture control mechanism 5, can make the silver strip cover on the copper strips surface by the copper strips top, get into hot rolling roller together and realize hot pressing complex, through setting up the partial lifting that lifting mechanism 7 is easily sagged to copper strips middle part, avoid copper strips and base 1 or external equipment contact, increase friction, through setting up lifting roller 9 to copper strips lifting, be convenient for silver strip and copper strips paste tightly, through setting up drive mechanism 11, make two hot rolls 10 reverse rotation under a driven effect, roll silver copper strips, lifting roller 9 is used for all lifting copper strips and silver strips, make both get into hot roll 10 under the state of pasting tightly.
The copper slag removing mechanism 12 comprises steel brushes 1201, a horizontal displacement mechanism of the steel brushes 1201 is arranged on one side of the vertical plate 2, the steel brushes 1201 are arranged in two groups, the two groups of steel brushes 1201 are respectively positioned on one sides of the two hot rolls 10, the lifting mechanism 7 comprises a square cylinder 701, and a lifting mechanism of the square cylinder 701 is arranged in the bracket 6.
By arranging the steel brush 1201, when the steel brush 1201 is contacted with copper slag, the copper slag is swept away from the hot roller 10 under the drive of the horizontal displacement mechanism.
The horizontal displacement mechanism comprises a fixing plate 1202, the fixing plate 1202 is fixed on one side of the vertical plate 2 through screws, a guide rod 1203 is fixed at one end of the fixing plate 1202, a displacement screw 1204 is rotatably connected to the other end of the fixing plate 1202, a driving motor 1205 for driving the displacement screw 1204 to rotate is mounted on the other side of the vertical plate 2, and the driving motor 1205 is started to enable the displacement screw 1204 to rotate.
The horizontal displacement mechanism further comprises a rectangular strip-shaped moving plate 1206, the guide rod 1203 penetrates through the moving plate 1206 and is in sliding connection with the moving plate 1206, the displacement screw 1204 penetrates through the moving plate 1206 and is in threaded connection with the moving plate 1206, one ends of two groups of steel brushes 1201 are respectively fixed at two ends of the moving plate 1206, the moving plate 1206 is longitudinally arranged, and one ends of the steel brushes 1201 close to the hot roller 10 are in arc-shaped arrangement.
After the displacement screw 1204 rotates, the moving plate 1206 horizontally moves on the outer wall of the guide rod 1203, and one side of the steel brush 1201 is arranged in an arc shape, so that the steel brush is closer to the surface of the hot roller 10, and the convex copper slag can be contacted with the arc-shaped surface of the steel brush 1201 only when copper slag exists on the surface of the hot roller 10.
The inner cavity of the square cylinder 701 is provided with a plurality of rollers 702, two ends of each roller 702 are rotatably connected with the inner walls of two sides of the square cylinder 701, and by arranging the rollers 702, as shown in fig. 3, when the copper strip moves in the square cylinder 701, the rollers 702 roll.
The lifting mechanism comprises a guide rod 705 and a lifting screw 703, wherein the guide rod 705 penetrates through one end of the square cylinder 701 and is in sliding connection with the square cylinder 701, the lifting screw 703 penetrates through the other end of the square cylinder 701 and is in threaded connection with the square cylinder 701, one end of the lifting screw 703 is rotationally connected with the base 1, the other end of the lifting screw 703 is rotationally connected with a transverse plate of the bracket 6, and a knob 704 is fixed at the top of the lifting screw 703.
When the knob 704 is screwed, the lifting screw 703 is rotated, so that the square cylinder 701 in threaded connection with the lifting screw 703 moves up and down under the limit of the guide rod 705.
The installation position 8 includes draw-in groove 801, screw hole 802 and concave shape base 803, and the bottom joint of the vertical board of support 6 is in draw-in groove 801, and the bottom threaded connection of guide arm 705 is in screw hole 802, and the bottom joint of lifting screw 703 is in base 803, base 803 rotates to be connected in base 1, and installation position 8 is provided with a plurality of groups.
Through setting up installation position 8, make whole lifting mechanism 7 be convenient for install on base 1, this mechanism can install a plurality of simultaneously according to the demand, and range and height all can be adjusted through the demand, use in a flexible way.
The guide roll 4 comprises a rotating rod 401 and limiting rings 402, the limiting rings 402 are fixed on the outer wall of the rotating rod 401, two limiting rings 402 are arranged on the outer wall of each rotating rod 401, one end of each rotating rod 401 is rotatably connected with a rotating seat 403, and in the silver belt conveying process, a silver belt is located between the two limiting rings 402.
The height adjusting mechanism 5 comprises a sliding block 501, a sliding groove 502 for the sliding block 501 to move up and down is formed in one side of the vertical plate 2, a rotating seat 403 is installed in the sliding block 501, a rotating motor 503 for driving the rotating seat 403 to rotate is installed on one side of the sliding block 501, a screw rod 504 is rotationally connected to the top of the sliding block 501, and the top end of the screw rod 504 penetrates through the vertical plate 2 and is in threaded connection with the vertical plate 2.
When the screw rod 504 is screwed, the sliding block 501 moves up and down in the sliding groove 502, so that the guide rollers 4 move up and down, when the rotating motor 503 is started, the guide rollers 4 rotate, and the height adjustment of each guide roller 4 is independently set by arranging a plurality of guide rollers 4, so that the silver belt can be conveniently changed in direction to be attached to the copper belt under the action of the guide rollers 4.
One side of the vertical plate 2 is rotatably connected with a supporting roller 505, the supporting roller 505 is positioned between the lifting roller 9 and the hot roller 10, and the supporting roller 505 is arranged to support the copper strip.
The transmission mechanism 11 comprises a driving gear 1101 and a driven gear 1102, wherein the driving gear 1101 and the driven gear 1102 are respectively fixed at one end of two hot rolls 10, the driving gear 1101 is meshed with the driven gear 1102, one end of one hot roll 10 is provided with a hot-rolling motor for driving the hot roll 10, and the hot-rolling motor is fixed at one side of the vertical plate 2 through screws;
When the hot rolling motor is started, the driving gear 1101 rotates, and the driven gear 1102 is driven to rotate, so that the two hot rolls 10 rotate relatively.
Based on the silver-copper composite strip hot rolling device, the invention also provides a use method of the silver-copper composite strip hot rolling device, which comprises the following steps:
S1, a silver-copper composite strip hot rolling method comprises the steps of putting a silver-soldering strip with the thickness of 1.2mm into a multi-channel slitting machine with a winding function, cutting into a plurality of narrow strips with the width of 20mm, respectively conveying copper strips with the thickness of 2mm and the silver strips cut into the narrow strips into a heating furnace with atmosphere protection under the action of an uncoiler, heating and preserving heat for 20 minutes under the argon protection at the temperature of 600 ℃, conveying the copper strips conveyed from the heat preserving furnace through a lifting mechanism for protection, and conveying the copper strips into a composite rolling mill for hot rolling;
S2, before a hot rolling mill penetrates into a strip, deslagging is carried out on the surface of a hot roller through a copper slag removing mechanism, after deslagging is finished, a silver belt is tightly attached to the upper surface of a copper belt under the limit of a conveying device, the silver belt and the copper belt enter the rolling mill together, the rotating speed of the hot rolling mill is adjusted to be 380m/min, the rolling force is 3000KN, the heating temperature is 650 ℃, the thickness of the strip is continuously tracked through a non-contact thickness gauge in the rolling process, and the speed of the hot rolling mill is adjusted under the rotating speed of 300-480 m/min, so that the composite strip is uniformly and finely rolled to be 0.1mm thick;
S3, the rolled composite strip enters an annealing furnace, is annealed for 3 minutes at 600 ℃, and the silver-copper composite strip after refined binding is reeled by a reeling machine.
When the copper slag removing device is used, the outer wall of the hot roller is used for removing copper slag, a driving motor is started to enable a displacement screw rod to rotate, after the displacement screw rod rotates, a moving plate horizontally moves on the outer wall of a guide rod, the arc-shaped end of a steel brush is contacted with the copper slag protruding out of the surface of the hot roller, and the copper slag is peeled off the hot roller;
Before hot pressing, as shown in fig. 2, the silver belt is penetrated between a plurality of guide rollers, the copper belt is penetrated in the square cylinder, the lower surface of the copper belt is contacted with the roller in the square cylinder, and the copper belt (the metal belt positioned below the silver belt) moves in the square cylinder under the action of the wind-up roller and the discharging roller at the two ends outside the device;
When the lifting height of the copper strip is adjusted, a knob is screwed, and the lifting screw is rotated, so that the square cylinder in threaded connection with the lifting screw moves up and down under the limit of the guide rod until the required height is adjusted;
During hot pressing, at the supporting roller (the supporting roller is shown in fig. 2 and 5), the silver belt is pressed against the surface of the copper belt under the limit of the limit ring of the guide roller and under the lower pressure of the rotating rod, and the silver belt and the copper belt are pressed into the hot roller from below at the lifting roller for hot pressing.
According to the copper strip rolling machine, the copper slag removing mechanism is arranged, copper slag is peeled off the hot roller, the damage of copper slag on the surface of the hot roller to the surface of the composite strip when the copper strip and the silver strip are pressed together can be avoided, and the square cylinder can lift the copper strip through the lifting mechanism, so that the function of supporting the middle part of the copper strip is achieved.
It should be noted that the foregoing description is only a preferred embodiment of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present invention.