WO2021037182A1

WO2021037182A1 - Production lines and production methods for continuously casting and rolling metal strap and composite metal strap

Info

Publication number: WO2021037182A1
Application number: PCT/CN2020/111980
Authority: WO
Inventors: 辛民昌; 李长明; 吴超; 辛程勋
Original assignee: 青岛九环新越新能源科技股份有限公司
Priority date: 2019-08-29
Filing date: 2020-08-28
Publication date: 2021-03-04

Abstract

Disclosed in the present invention are a production line and a production method for continuously casting and rolling a metal strap. The thickness of a liquid metal is controlled by using a control roller group, the liquid metal moves, under the combined action of the control roller group and a transmission belt, to a cooling area located at a discharging side of the control roller group, a metal strap is obtained after being cooled and shaped in the cooling area, as the liquid metal has a high fluidity, the thickness of the liquid metal can be controlled to be very thin, and when the metal strap is used as an energy storage electrode, the use requirements can be satisfied. The present invention further provides a production line and a production method for continuously casting and rolling a composite metal strap. The thickness of a liquid metal is controlled by using a control roller group, the liquid metal moves, under the combined action of the control roller group and a strap material, to a cooling area located at a discharging side of the control roller group, a metal material layer composite on the strap material is obtained after being cooled and shaped in the cooling area, as the liquid metal has a high fluidity, the thickness of the liquid metal can be controlled to be very thin, and when the composite metal strap is used as an energy storage electrode, the use requirements can be satisfied.

Description

Production line and production method of continuous casting and rolling metal strip and composite metal strip

Technical field

The invention relates to a strip production equipment and production method, in particular to a production line and production method for continuous casting and rolling metal strips and composite metal strips.

Background technique

The negative electrode of a lithium ion battery is made by mixing the negative active material carbon material or non-carbon material, binders and additives to form a paste glue that is evenly smeared on both sides of the copper foil, dried and rolled. The key to the successful manufacture of lithium-ion batteries lies in the preparation of negative electrode materials that can reversibly de-intercalate lithium ions. Generally speaking, choosing a good negative electrode material should follow the following principles: high specific energy; low electrode potential relative to lithium electrode; good reversibility of charge and discharge reaction; good compatibility with electrolyte and binder; small specific surface area (<10m ² /g), high true density (>2.0g/cm ³ ); good size and mechanical stability during lithium insertion; abundant resources and low price; stable in the air without toxic side effects. At present, the negative electrode materials that have been actually used in lithium-ion batteries are generally carbon materials, such as graphite, soft carbon (such as coke, etc.), hard carbon, and so on. Although traditional carbon materials can meet the requirements of lithium-ion battery negative electrodes to a certain extent, they have disadvantages such as low energy density and heavy weight.

Lithium metal has high capacity (theoretical 3860mAh/g), low density (0.59g/cm ³ ), and low electrochemical potential (-3.04Vvs. standard hydrogen electrode). Therefore, lithium metal is used as the negative electrode of lithium metal secondary Compared with lithium-ion batteries with graphite negative electrodes, the battery has excellent performance with high voltage and high energy density. In order to meet the demand for high-rate discharge of lithium batteries, an ultra-thin positive electrode suitable for high-rate discharge is required. Therefore, the metal lithium negative electrode that matches the capacity of the positive electrode also needs to be ultra-thin. However, commercially available battery-grade metal lithium is generally thicker. Only a few manufacturers can provide metal lithium with a width of 50-100μm and a width of only 10-50mm. The surface condition of the metal lithium is poor, and it is difficult to laminate with conductive substrates. The laminate strength Lower.

Existing lithium belt production processes generally use extrusion molding. For example, in the lithium belt production processes disclosed in Chinese patents with publication numbers CN204564801U and CN101497088B, the thinnest can be several tens of micrometers in thickness. When a thicker metal lithium tape is used in a metal lithium battery, the capacity of the negative electrode is far more than that of the positive electrode, which causes a waste of negative metal lithium, and also increases the volume and weight of the battery, and reduces the volume and quality of the battery. Energy density is not conducive to the improvement of the ultimate energy density of metal lithium batteries. In addition, the Chinese Patent Publication No. CN105489845A proposes a PVD-based method to prepare a thin-layer metal lithium-based negative electrode. This method can prepare a thinner thickness of metal lithium, but this method cannot be mass-produced continuously in a large area.

Existing negative metal composite materials are generally obtained by compounding metal lithium foil and metal copper foil. For example, the Chinese patent with publication number CN108435791A discloses a cryogenic asynchronous rolling method for preparing layered copper/lithium composite foil. , Including the following steps: the first step: use pure lithium and pure copper metal foil as raw materials, the thickness of the copper foil is one-half of the lithium foil; the second step: cut the copper foil and the lithium foil into a rectangle; third Step: Fold the copper foil in half to completely cover the lithium foil; Step 4: Put the material in a cryogenic box for cooling, and cool for 10 minutes to achieve uniform cooling of the material temperature; Step 5: Take out the material and press it Cryogenic rolling is carried out at a reduction rate of about 50%. After rolling, the temperature of the rolled piece is <-50°C; Step 6: Fold and overlap the rolled strip in half and place it in a cryogenic box to re-cool , The cooling time is 3-5 minutes; the seventh step: the cooled material is then cryogenically rolled, and the reduction rate is maintained at about 50%; repeat the sixth and seventh steps 5-10 times to produce high-performance Layered copper/lithium bimetal composite foil; Step 8: Put the layered copper/lithium bimetal composite foil into a cryogenic box for re-cooling, the cooling time is 3-5 minutes; Step 9: Use cryogenic asynchronous For rolling, the different speed ratio is 1.0-1.6, and the rolling reduction is 5-20%; the eighth step and the ninth step are repeated until the thickness of the rolled piece is rolled to 10-50μm.

The negative metal composite material prepared by the cryogenic asynchronous rolling method for preparing layered copper/lithium composite foil has the following disadvantages:

1) It is difficult to prepare a lithium belt with a thickness of 2-20um on the surface of the copper foil, that is, the thickness of metal lithium is relatively thick, which wastes materials;

2) In the prepared negative electrode metal composite material, the binding force of metal lithium and metal copper is often not strong enough and easy to fall off.

Summary of the invention

In view of this, the purpose of the present invention is to provide a production line and production method for continuous casting and rolling of metal strips and composite metal strips, which can accurately control the production thickness of metal strips and metal material layers, that is, the thickness can be thinner to meet storage requirements. The use requirements of energy electrodes and other scenes.

In order to achieve the above objective, the present invention provides the following technical solutions:

The present invention first proposes a continuous casting and rolling metal strip production line, which includes:

Transmission belt mechanism I, the transmission belt mechanism I includes a first transmission roller and a second transmission roller located at both ends, and a transmission belt I is sleeved between the first transmission roller and the second transmission roller;

Winding mechanism I, used to wind the metal belt made;

The transmission belt mechanism I is provided with a control roller group I for controlling the thickness of the metal belt. The control roller group I includes an upper control roller I located above the transmission belt I and a lower control roller I located below the transmission belt I. The feeding side of the control roll set I is provided with a feeding device I for adding liquid metal, and the feeding side of the control roll set I is provided with a high temperature zone I for keeping the liquid metal in liquid state and fluidity. The discharge side of the control roll group I is provided with a cooling zone I for cooling and shaping the liquid metal into a metal strip.

Further, the highest point of the lower control roller I is flush with the highest points of the first transmission roller and the second transmission roller, and the transmission belt I is positioned on a horizontal surface; the upper control roller I and the lower control roller I The gap between the rollers in the vertical direction is equal to the sum of the thickness of the transmission belt I and the preset thickness of the metal belt; the feed side of the control roller set I is provided with an overflow control plate I, and the overflow The overflow height of the flow control plate I is flush with the lowest point of the upper control roller I.

Further, the vertical distance between the upper control roller I and the first transmission roller is equal to the thickness of the transmission belt I; the feed side of the control roller group I is provided with a press on the transmission belt I Pressure roller I, the vertical distance between the pressure roller I and the lower control roller I is equal to the thickness of the transmission belt I, and the upper control roller I and the lower control roller I are in the vertical direction The upper roller gap is equal to the sum of the thickness of the transmission belt I and the preset thickness of the metal belt;

The pressure roller I is provided with an overflow ring groove I, the depth of the overflow ring groove I is greater than or equal to the preset thickness of the metal strip, and the feeding device I adds liquid metal to the pressure roller I and the Between control roller group I.

Further, the highest point of the first transmission roller is higher than the highest point of the second transmission roller, and the difference between the height of the highest point of the first transmission roller and the height of the highest point of the second transmission roller is equal to The preset thickness of the metal strip.

Further, an overflow receiving tank I for recovering the overflowing liquid metal is provided at the first driving roller.

Further, the feeding side of the control roller group I is provided with a feeding roller I, and the feeding roller I is provided with at least one pusher arranged along its axial direction and used to push the liquid metal to the control roller group I Brush Ⅰ or push paddle Ⅰ.

Furthermore, the feeding side of the control roller group I is further provided with at least one guide roller I for uniformly spreading the liquid metal along the width direction of the transmission belt I on the feeding side.

Furthermore, a first compounding mechanism for compounding an anti-sticking film on at least one side of the metal belt is provided between the winding mechanism I and the driving belt mechanism I.

Further, it also includes a finishing area I arranged between the discharge side of the control roller group I and the winding mechanism I, and at least one group is arranged in the finishing area I for finishing the warp The cooling zone I cools the finishing roll group I of the shaped metal belt.

Further, the finishing zone I is provided with a finishing temperature control device I for controlling the finishing temperature.

Further, the finishing area I is arranged between the winding mechanism I and the second transmission roller, and between the second transmission roller and the finishing area I is arranged for the metal At least one side surface of the belt is composited with a second composite mechanism supporting the film.

Further, the metal material used in the metal belt adopts but is not limited to metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum or metal silver; or the metal material used in the metal belt adopts However, it is not limited to an alloy formed by a ratio of at least two of metallic lithium, metallic sodium, metallic potassium, metallic magnesium, metallic calcium, metallic zinc, metallic aluminum and metallic silver.

Further, the second transmission roller is provided with a stripper for peeling the metal belt from the transmission belt I.

Further, it also includes a side retaining device arranged on both sides of the transmission belt I and used to limit the forming width of the metal belt.

Further, the side retaining device includes side retaining seats respectively located on the upper two sides of the transmission belt I, and the side retaining seats are provided with pressure strips for contacting and cooperating with the upper side of the transmission belt I and used to limit the flow range of the liquid metal. .

The present invention also proposes a production method for continuous casting and rolling of metal strip. Liquid metal is added to the feeding side of the control roll group I, and the high temperature zone I arranged on the feeding side of the control roll group I is used to keep the liquid metal in a liquid state. For fluidity, the control roller group I is used to control the forming thickness of the liquid metal, and the cooling zone I arranged on the discharge side of the control roller group I is used to cool and shape the liquid metal on the transmission belt I into a metal belt.

Further, the vertical distance between the upper control roller I and the lower control roller I is set equal to the sum of the thickness of the transmission belt I and the preset thickness of the metal belt; the highest point of the lower control roller I is set It is flush with the highest points of the first and second transmission rollers, so that the transmission belt I is on a horizontal surface; an overflow control plate I is set on the feeding side of the control roller group I, so that the overflow height of the overflow control plate I is equal to The lowest point of the upper control roller I is flush.

Further, the vertical roll gap between the upper control roller I and the first transmission roller is set equal to the thickness of the transmission belt I; a pressure roller pressing on the transmission belt I is provided on the feeding side of the control roller group I Ⅰ. Set the vertical distance between the pressure roller I and the lower control roller I to be equal to the thickness of the transmission belt I, and set the upper control roller I and the lower control roller I in the vertical direction. The roll gap is set equal to the sum of the thickness of the transmission belt I and the preset thickness of the metal belt; an overflow ring groove I is set on the pressure roller I, and the depth of the overflow ring groove I is set to be greater than Equal to the preset thickness of the metal strip, the feeding device I adds liquid metal between the pressing roller I and the control roller group I.

Further, the highest point of the first transmission roller is set to be higher than the highest point of the second transmission roller, and the height of the highest point of the first transmission roller is the same as the highest point of the second transmission roller. The difference in height is equal to the preset thickness of the metal strip.

Further, the overflow receiving tank I is used to recover the overflowing liquid metal at the first driving roller.

Further, a feeding roller I is provided on the feeding side of the control roller group I, and at least one pushing roller is arranged on the feeding roller I along its axial direction and used to push the liquid metal toward the control roller group I. The material brush I or the material pushing paddle I makes the liquid metal fill the gap between the upper control roller I and the transmission belt I.

Further, at least one guide roller I is arranged at intervals on the feeding side of the control roller group I, and the guide roller I is used to spread the liquid metal evenly on the transmission belt I along the width direction of the transmission belt I.

Further, before winding the metal belt, a layer of anti-sticking film is laminated on at least one side of the metal belt to prevent two adjacent layers of metal belts from adhering together.

Further, after the metal belt is cooled and formed, the metal belt is finished, and the metal belt is finished by using at least one set of finishing roller sets I arranged at intervals to make the thickness and surface accuracy of the metal belt reach the set range.

Further, the finishing temperature is controlled to keep the metal strip within a temperature range convenient for its finishing.

Further, when the metal belt is peeled from the transmission belt I and then the metal belt is finished, after the metal belt is peeled from the transmission belt I and before the metal belt is finished, on at least one side of the metal belt A layer of supporting film used to support the metal belt is laminated.

Further, the metal belt is peeled off the transmission belt I by a peeler.

Further, on both sides of the transmission belt I are respectively provided with side retaining devices for limiting the forming width of the metal belt.

The invention also provides a production line for continuous casting and rolling of composite metal strips, which includes:

Transmission belt mechanism II, the transmission belt mechanism II includes a third transmission roller and a fourth transmission roller at both ends, and a transmission belt II is sleeved between the third transmission roller and the fourth transmission roller;

Unwinding mechanism for unwinding strips that move synchronously with the drive belt II;

Winding mechanism II, used to wind the composite metal belt made by winding;

The transmission belt mechanism II is provided with a control roller group II for controlling the thickness of the metal material layer, and the control roller group II includes an upper control roller II located above the transmission belt II and a lower control roller II located below the transmission belt II The feeding side of the control roll group II is provided with a feeding device II for adding liquid metal, and the feeding side of the control roll group II is provided with a high temperature zone II for keeping the liquid metal in a liquid state and fluidity, A cooling zone II for cooling and shaping the liquid metal on the strip into a metal material layer is provided on the discharge side of the control roll group II.

Further, the unwinding mechanism unwinds the strip and is guided by the third driving roller to move synchronously with the driving belt II.

Further, the highest point of the lower control roller II is flush with the highest points of the third transmission roller and the fourth transmission roller, and the transmission belt II is positioned on a horizontal surface; the upper control roller II and the lower control roller II The gap between the rollers in the vertical direction is equal to the sum of the thickness of the transmission belt II, the thickness of the strip and the preset thickness of the metal material layer; the feed side of the control roller group II is provided with an overflow control Plate II, the overflow height of the overflow control plate II is flush with the lowest point of the upper control roller II.

Further, the vertical distance between the upper control roller II and the third transmission roller is equal to the sum of the thickness of the transmission belt II and the thickness of the strip; the feeding side of the control roller group II is set There is a pressing roller II pressed on the transmission belt II, and the vertical distance between the pressing roller II and the lower control roller II is equal to the sum of the thickness of the transmission belt II and the thickness of the strip, and the upper The vertical roll gap between the control roll II and the lower control roll II is equal to the sum of the thickness of the transmission belt II, the thickness of the strip and the preset thickness of the metal material layer;

The pressure roller II is provided with an overflow ring groove II, the depth of the overflow ring groove II is greater than or equal to the preset thickness of the metal material layer, and the feeding device II adds liquid metal to the pressure roller II and the metal material layer. Said control roller group Ⅱ.

Further, the highest point of the third driving roller is higher than the highest point of the fourth driving roller, and the difference between the height of the highest point of the third driving roller and the height of the highest point of the fourth driving roller is equal to The preset thickness of the metal material layer.

Furthermore, the third driving roller is provided with an overflow receiving tank II for recovering the overflowing liquid metal.

Further, the feeding side of the control roller group II is provided with a feeding roller II, and the feeding roller II is provided with at least one pusher arranged along its axial direction and used to push the liquid metal to the control roller group II. Brush Ⅱ or push paddle Ⅱ.

Furthermore, the feeding side of the control roller group II is also provided with at least one guide roller II for uniformly spreading the liquid metal along the width direction of the strip.

Further, it also includes a finishing zone II arranged between the discharge side of the control roller group II and the winding mechanism II, and at least one set of the finishing zone II is arranged at intervals for finishing the warp The cooling zone II cools the finalized finishing roll group II of the metal material layer.

Further, a finishing temperature control device II for controlling the finishing temperature is provided in the finishing zone II.

Further, the strip material adopts, but is not limited to, a copper strip, aluminum strip, steel strip, nickel strip, silver strip, gold strip, or a composite strip of a metal material and a non-metal material.

Further, the strip is a mesh foil or the strip is provided with through holes in an array.

Further, the metal material used to roll the metal material layer is, but not limited to, metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum, or metal silver; or the metal material is used but not It is limited to an alloy formed by a ratio of at least two of metallic lithium, metallic sodium, metallic potassium, metallic magnesium, metallic calcium, metallic zinc, metallic aluminum and metallic silver.

Furthermore, it also includes an edge pressing device for pressing on the edges of both sides of the strip and forming a blank area that does not cover the metal material layer on the edges of both sides of the strip.

Further, in the initial state, no metal material layer is formed on both sides of the strip, the edge holding device includes upper edge holders respectively located on the upper two sides of the transmission belt II, and the bottom surface of the upper edge holder There is an upper pressing edge for contacting and cooperating with the upper side edge of the strip; or, the edge pressing device includes an upper pressing seat and a lower pressing edge respectively located on the upper and lower sides of the transmission belt II Seat, the bottom surface of the upper crimping seat is provided with an upper crimp for contacting and matching with the upper side edge of the strip, and the top surface of the lower crimping seat is provided with a lower crimp for contacting the strip The side edges touch the mating lower pressing edge.

Further, in the initial state, the metal material layer has been formed on one side of the strip, and the edge pressing device includes an upper edge holder and a lower edge holder which are respectively located on the upper and lower sides of the transmission belt II. Seat, the bottom surface of the upper crimping seat is provided with an upper crimp for contacting and matching with the upper side edge of the strip, and the top surface of the lower crimping seat is provided with a lower crimp for contacting the strip The side edges touch the mating lower pressing edge.

Further, a cold temperature zone located below the transmission belt II is provided between the lower control roller II and the first transmission belt II, and the cold temperature zone is used to prevent the formed metal material layer from being melted.

The present invention also proposes a production method for continuous casting and rolling of composite metal strip, unwinding the strip and making the strip move synchronously with the transmission belt II, adding liquid metal to the feeding side of the control roll group II, and using the setting in the control The high temperature zone II on the feed side of the roll set II keeps the liquid metal liquid and fluid, the control roll set II is used to control the thickness of the liquid metal, and the cooling zone II set on the discharge side of the control roll set II is used to make the liquid metal on the strip The liquid metal is cooled and shaped into a metal material layer composited on the strip to obtain a composite metal strip.

Further, the belt material enters the transmission belt mechanism II under the guidance of the third transmission roller and moves synchronously with the transmission belt II.

Further, the vertical distance between the upper control roller II and the lower control roller II is set equal to the sum of the thickness of the transmission belt II, the thickness of the strip and the preset thickness of the metal material layer; The highest point of the control roller II is flush with the highest points of the third and fourth transmission rollers, so that the transmission belt II is on a horizontal surface; the feed side of the control roller group II is provided with an overflow control plate II, and the overflow The overflow height of the flow control plate II is flush with the lowest point of the upper control roller II.

Further, the vertical roll gap between the upper control roller II and the third transmission roller is set equal to the sum of the thickness of the transmission belt II and the thickness of the strip; on the feeding side of the control roller group II Setting a pressing roller II pressed on the transmission belt II, and setting the vertical distance between the pressing roller II and the lower control roller II to be equal to the sum of the thickness of the transmission belt II and the thickness of the strip, Setting the roll gap in the vertical direction between the upper control roll II and the lower control roll II to be equal to the sum of the thickness of the transmission belt II, the thickness of the strip, and the preset thickness of the metal material layer;

An overflow ring groove II is provided on the pressure roller II, the depth of the overflow ring groove II is set to be greater than or equal to the preset thickness of the metal material layer, and the feeding device II adds liquid metal to the pressure roller Ⅱ and the control roller group Ⅱ.

Further, the highest point of the third transmission roller is set to be higher than the highest point of the fourth transmission roller, and the height of the highest point of the third transmission roller is the same as the highest point of the fourth transmission roller. The difference in height is equal to the preset thickness of the metal material layer.

Further, a feeding roller II is provided on the feeding side of the control roller group II, and at least one pushing roller is provided on the feeding roller II along its axial direction and used to push the liquid metal toward the control roller group II. The material brush II or the material pushing paddle II makes the liquid metal fill the gap between the upper control roller II and the strip.

Further, at least one guide roller II is arranged at intervals on the feeding side of the control roller group II, and the guide roller II is used to uniformly spread the liquid metal along the width direction of the transmission belt II.

Further, after the metal material layer is cooled and formed, the metal material layer is finished, and the metal material layer is finished by using at least one set of finishing roller set II arranged at intervals to make the thickness and surface accuracy of the metal material layer reach the set value. range.

Further, the finishing temperature is controlled to keep the metal material layer within a temperature range that facilitates its finishing.

Further, the rolling width of the metal material layer is controlled, and a blank area not covered with the metal material layer is formed on both sides of the strip.

Furthermore, the edge crimping device is used to press on both sides of the strip to prevent the liquid metal from flowing into the area pressed by the crimping device, and finally the blank areas are formed on both sides of the strip.

Further, in the initial state, there is no metal material layer formed on the two sides of the strip, and only the upper edge holders are provided on the upper two sides of the transmission belt II, and the bottom surface of the upper edge holder is provided for contact with the belt. The upper edge of the material is in contact with the matching upper crimp; or, an upper crimp seat and a lower crimp seat are provided on the upper and lower sides of the transmission belt II, respectively, and the bottom surface of the upper crimp seat is provided for contact with the The upper side edge of the strip is in contact with the matched upper crimping edge, and the top surface of the lower crimping seat is provided with a lower crimping edge for contacting and matching with the lower side edge of the strip.

Furthermore, in the initial state, a metal material layer has been formed on one side of the strip. The upper and lower sides of the drive belt II are respectively provided with an upper and a lower clamping seat. The bottom surface of the upper clamping seat An upper crimp for contact and fit with the upper side edge of the strip is provided, and a lower crimp for contact and fit with the lower side edge of the strip is provided on the top surface of the lower crimp seat.

Furthermore, a cold temperature zone for preventing the rolled metal material layer from being melted is provided under the transmission belt II on the feeding side of the control roll group II.

The beneficial effects of the present invention are:

The continuous casting and rolling metal belt production line of the present invention uses the control roll set I to control the thickness of the liquid metal, and the liquid metal moves to the cooling zone located on the discharge side of the control roll set I under the combined action of the control roll set I and the transmission belt I I. The metal strip is obtained after cooling and shaping in the cooling zone I. Due to the high fluidity of the liquid metal, the thickness of the liquid metal can be controlled to be very thin. When the composite metal strip is used as an energy storage electrode, it can meet the requirements of use.

By setting the finishing zone I, not only the thickness of the metal strip can be trimmed and the surface accuracy of the metal strip can be controlled, but also the internal stress in the metal strip can be effectively eliminated by controlling the temperature during the finishing process, and the metal strip’s quality can be improved. Plasticity prevents defects such as cracks in the metal belt and improves product quality.

The production method of the continuous casting and rolling metal belt of the present invention uses the control roll group I to control the thickness of the liquid metal. The liquid metal moves to the cooling on the discharge side of the control roll group I under the combined action of the control roll group I and the transmission belt I. Zone I, the metal strip is obtained after cooling and shaping in the cooling zone I. Due to the high fluidity of the liquid metal, the thickness of the liquid metal can be controlled to be very thin. When the composite metal strip is used as an energy storage electrode, it can meet the requirements of use.

Finishing can not only control the thickness of the metal strip and the surface accuracy of the metal strip, but also in the finishing process, through the control of the temperature, it can effectively eliminate the internal stress in the metal strip, improve the plasticity of the metal strip, and prevent the metal strip from being inside. Defects such as cracks appear to improve product quality.

The continuous casting and rolling composite metal belt production line of the present invention uses the transmission belt II to drive the belt material to move synchronously, which reduces the requirement on the tensile strength of the belt material, and directly adds liquid metal to the feeding side of the control roller group II, and uses the control roller group Ⅱ Control the thickness of the liquid metal. The liquid metal moves to the cooling zone Ⅱ on the discharge side of the control roll group Ⅱ under the joint action of the control roll group Ⅱ and the strip. After cooling and shaping in the cooling zone Ⅱ, the liquid metal is compounded on the strip. For the metal material layer, due to the high fluidity of the liquid metal, the thickness of the liquid metal can be controlled to be very thin. When the composite metal strip is used as an energy storage electrode, it can meet the use requirements; in addition, due to the high temperature of the liquid metal, After the process of cooling from high temperature to low temperature, the bonding strength between the metal material layer and the strip can be improved.

By setting the finishing zone II, not only the thickness of the metal material layer can be finished and the surface accuracy of the metal material layer can be controlled, but also the internal stress in the metal material layer can be effectively eliminated by controlling the temperature during the finishing process and improve The plasticity of the metal material layer prevents defects such as cracks in the metal material layer and improves product quality.

The production method of the continuous casting and rolling composite metal belt of the present invention uses the transmission belt II to drive the belt material to move synchronously, which reduces the requirement on the tensile strength of the belt material, and directly adds liquid metal to the feeding side of the control roll group II, and uses the control Roll group II controls the thickness of the liquid metal. The liquid metal moves to the cooling zone II on the discharge side of the control roll group II under the joint action of the control roll group II and the strip. After cooling and shaping in the cooling zone II, the liquid metal is compounded in the strip. Due to the high fluidity of the liquid metal, the thickness of the liquid metal can be controlled to be very thin on the upper metal material layer. When the composite metal strip is used as an energy storage electrode, it can meet the requirements of use; in addition, because the temperature of the liquid metal is relatively high High, through the process of cooling from high temperature to low temperature, it can improve the bonding strength between the metal material layer and the strip.

Finishing can not only finish the thickness of the metal material layer and control the surface accuracy of the metal material layer, but also during the finishing process, by controlling the temperature, it can effectively eliminate the internal stress in the metal material layer and improve the plasticity of the metal material layer. , Prevent defects such as cracks in the metal material layer, and improve product quality.

Description of the drawings

In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

Figure 1 is a schematic structural view of Embodiment 1 of a production line for continuous casting and rolling of metal strips according to the present invention;

Figure 2 is a cross-sectional view of A-A in Figure 1;

Figure 3 is a detailed view of Figure 2 B;

FIG. 4 is a schematic diagram of the principle of the production line for continuous casting and rolling of metal strips in this embodiment;

5 is a schematic structural view of Embodiment 2 of a production line for continuous casting and rolling of metal strips according to the present invention;

6 is a schematic diagram of the principle of the production line for continuous casting and rolling of metal strips in this embodiment;

Figure 7 is a schematic diagram of the structure of the pressure roller I;

FIG. 8 is a schematic structural view of Embodiment 3 of the production line of the continuous casting and rolling composite metal strip of the present invention;

Figure 9 is a C-C cross-sectional view of Figure 1;

Figure 10 is a detailed view of D in Figure 2;

Figure 11 is a schematic diagram of the rolling principle of the production line for continuous casting and rolling of composite metal strips in Figure 1;

12 is a schematic diagram of the second structure of the production line for continuous casting and rolling of composite metal strips in this embodiment;

Figure 13 is an E-E cross-sectional view of Figure 5;

Figure 14 is a detailed view of F in Figure 6;

15 is a schematic diagram of the rolling principle of the continuous casting and rolling composite metal strip production line in FIG. 5;

Figure 16 is a schematic diagram of the structure of the pressure roller II;

Figure 17a is a schematic diagram of the structure of a composite metal strip when the strip adopts a solid structure and a metal material layer is laminated on one side;

Figure 17b is a schematic diagram of the structure of a composite metal strip when the strip is provided with through holes in an array and a metal material layer is composited on one side;

18 is a schematic structural view of Embodiment 4 of the production line for continuous casting and rolling of composite metal strips according to the present invention;

19 is a schematic diagram of the second structure of the production line for continuous casting and rolling of composite metal strip in this embodiment;

Figure 20 is a G-G cross-sectional view of Figure 12;

FIG. 21 is a detailed view of H in FIG. 13;

Figure 22 is a schematic diagram of the structure of a composite metal strip when the strip adopts a solid structure and has metal material layers on both sides;

FIG. 23 is a schematic diagram of the structure of a composite metal strip when the through holes are arranged in an array on the strip and the metal material layers are laminated on both sides.

Description of reference signs:

1-Metal tape; 2-Supporting film; 3-Strip material; 4-Composite metal tape; 5-Metal material layer; 4-Blank area;

11-first transmission roller; 12-second transmission roller; 13-transmission belt I; 14-upper control roller I; 15-lower control roller I; 16-overflow control plate I; 16a-overflow port I; 17- High temperature zone Ⅰ; 18-cooling zone Ⅰ; 19-roll group Ⅰ; 20-press roller Ⅰ; 21-overflow ring groove Ⅰ; 22-guide roller Ⅰ; 23-side rib seat; 24-beading; 25-stripping器；26-Support surface; 28-Feeding roller Ⅰ;

30- Winding mechanism I;

40-Finishing zone Ⅰ; 41-Finishing roller group Ⅰ;

50-The second compound organization.

61-Third transmission roller; 62-Fourth transmission roller; 63-Transmission beltⅡ; 64-Upper control rollerⅡ; 65-Lower control rollerⅡ; 66-Overflow control plateⅡ; 66a-Overflow portⅡ; 67- High temperature zone Ⅱ; 68-cooling zone Ⅱ; 69-roll group Ⅱ; 70-press roller Ⅱ; 71-overflow ring groove Ⅱ; 72-guide roll Ⅱ; 73-upper holder; 74-upper edge; 75- lower edge holder; 76- lower edge holder; 77- low temperature zone; 78- feed roller Ⅱ;

80-Unwinding mechanism;

90-winding mechanism Ⅱ;

100-Finishing zone II; 101-Finishing roller group II.

detailed description

The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention, but the examples given are not intended to limit the present invention.

Example 1

As shown in FIG. 1, it is a schematic structural diagram of Embodiment 1 of the production line for continuous casting and rolling of metal strips of the present invention. The continuous casting and rolling metal strip production line of this embodiment includes:

Transmission belt mechanism I. The transmission belt mechanism I includes a first transmission roller 11 and a second transmission roller 12 at both ends, and a transmission belt I13 is sleeved between the first transmission roller 11 and the second transmission roller 12;

Winding mechanism Ⅰ30, used for winding the metal belt 1 made;

The transmission belt mechanism I is equipped with a control roller group I for controlling the thickness of the metal belt. The control roller group I includes an upper control roller I14 located above the transmission belt I13 and a lower control roller I15 located below the transmission belt I13. The feeding side of the control roller group I A feeding device I for adding liquid metal is provided, and a high temperature zone I17 for keeping the liquid metal liquid and fluid is set on the feeding side of the control roll set I, and a high temperature zone I17 for keeping the liquid metal liquid and fluid is set on the discharge side of the control roll set I for making The liquid metal cooling is shaped into the cooling zone I18 of the metal belt.

In the production line for continuous casting and rolling of metal strip in this embodiment, the thickness of the liquid metal is controlled by the control roll set I. The liquid metal moves to the cooling zone located on the discharge side of the control roll set I under the combined action of the control roll set I and the transmission belt I. I. The metal strip is obtained after cooling and shaping in the cooling zone I. Due to the high fluidity of the liquid metal, the thickness of the liquid metal can be controlled to be very thin. When the composite metal strip is used as an energy storage electrode, it can meet the requirements of use.

Further, the highest point of the lower control roller I15 of this embodiment is flush with the highest points of the first transmission roller 11 and the second transmission roller 12, and the transmission belt I13 is located on a horizontal surface; between the upper control roller I14 and the lower control roller I15 The roll gap in the vertical direction is equal to the sum of the thickness of the transmission belt I13 and the preset thickness of the metal belt 1. The feed side of the control roll group I is equipped with an overflow control plate I16, and the overflow height of the overflow control plate I16 is equal to The lowest point of the upper control roller I14 is flush. Specifically, the overflow control plate I16 is provided with an overflow port I16a, and the lowest point of the overflow port I16a is flush with the lowest point of the upper control roller I14, as shown in FIG. In this way, the feeding device I adds the liquid metal to the transmission belt I13 between the overflow control plate I and the control roller group I, and the control roller group I controls the circulation height of the liquid metal, thereby controlling the forming thickness of the metal belt 1. In order to prevent the problem of large fluctuations in the thickness of the liquid metal due to excessive liquid metal, the overflow port I16a provided on the overflow control plate I16 is used to discharge the excess liquid metal, and the overflow control plate I16 and the control roller set are maintained. The volume of liquid metal between I is relatively stable, and the forming thickness of the metal belt 1 can be better controlled.

Furthermore, the first transmission roller 11 is provided with an overflow receiving tank I for recovering the overflowing liquid metal, which is used for recovering the overflowing liquid metal, and the recovered liquid metal can be recycled.

Further, the feeding side of the control roller group I is provided with a feeding roller I 28, and the feeding roller I 28 is provided with at least one pusher brush I or a pusher paddle arranged along its axial direction and used to push the liquid metal to the control roller group I Ⅰ. Specifically, the feed roller I28 is set between the overflow control plate I16 and the control roller group I, and is used to push the liquid metal so that the liquid metal always fills the gap between the upper control roller I14 and the transmission belt I1, even if the metal belt 1 is in The molding thickness in the length direction is more uniform.

Furthermore, the feed side of the control roller set I is also provided with at least one guide roller I22 for evenly spreading the liquid metal along the width direction of the transmission belt I13 on the transmission belt I, so that the liquid metal can be evenly distributed in the width direction of the transmission belt I13. , So that the forming thickness of the metal strip 1 in the width direction is more uniform.

Further, if the metal belt is directly wound after being cooled and shaped in the cooling zone I18, a first composite mechanism for compounding a release film on at least one side of the metal belt 1 can be provided between the winding mechanism I30 and the transmission belt mechanism I. Prevent two adjacent layers of metal tapes from sticking together after rewinding. The continuous casting and rolling metal strip production line of this embodiment also includes a finishing zone I 40 arranged between the discharge side of the control roll group I and the winding mechanism I. The finishing zone I 40 is provided with at least one set for finishing at intervals. The finishing roll group I41 of the shaped metal belt 1 is cooled in the warping cooling zone I. Preferably, a finishing temperature control device I for controlling the finishing temperature is provided in the finishing zone I. Specifically, the finishing area I 40 of this embodiment is arranged between the winding mechanism I 30 and the second transmission roller 12 and, and between the second transmission roller 12 and the finishing area I 40 is provided at least one metal belt 1 The second composite mechanism 50 supporting the film 2 is composited on one side. By compounding the supporting film 2 on the side surface of the metal belt 1, the supporting film 2 is used to bear the effect of tension and prevent the metal belt 1 from being broken due to its thin thickness. By setting the finishing zone I, not only the thickness of the metal strip can be trimmed and the surface accuracy of the metal strip can be controlled, but also the internal stress in the metal strip can be effectively eliminated by controlling the temperature during the finishing process, and the metal strip’s quality can be improved. Plasticity, prevent defects such as cracks in the metal strip, and improve product quality

Further, the metal material used in the metal belt 1 is, but not limited to, metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum or metal silver; or the metal material used in the metal belt 1 is but not limited to metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum or metal silver. It is limited to an alloy formed by a ratio of at least two of metallic lithium, metallic sodium, metallic potassium, metallic magnesium, metallic calcium, metallic zinc, metallic aluminum and metallic silver. That is, the metal material selected in this embodiment can be used as the active material of the energy storage electrode, that is, the composite metal belt of this embodiment can be used as the energy storage electrode, and the metal belt 1 of this embodiment is preferably made of metal lithium.

Furthermore, the second transmission roller 12 is provided with a stripper 25 for peeling the metal belt 1 from the transmission belt I13 to assist in peeling the metal belt 1 from the transmission belt I13 to prevent the metal belt 1 from breaking, and the stripper 25 is provided There is a supporting surface 26 for supporting the metal belt 1 between the second transmission roller 12 and the first composite mechanism or the second composite mechanism, so as to further prevent the metal belt 1 from being broken under the action of gravity.

Furthermore, the production line for continuous casting and rolling of metal belts in this embodiment also includes edge retaining devices arranged on both sides of the transmission belt I13 and used to limit the forming width of the metal belt 1. The side rib device of this embodiment includes side rib seats 23 respectively located on the upper two sides of the transmission belt I, and the side rib seats 23 are provided with pressure bars 24 for contacting and cooperating with the upper side of the transmission belt I and used to limit the flow range of the liquid metal. The bead 24 is made of a high-temperature resistant and soft material, and the frictional resistance between it and the transmission belt I13 is small; depending on the metal material, the bead 24 also needs to have the characteristics of non-adhesive metal materials, which will not be repeated.

The specific implementation of the continuous casting and rolling composite metal strip production method of this embodiment will be described in detail below in conjunction with the above-mentioned metal strip rolling production line.

In the production method of the continuous casting and rolling metal strip of this embodiment, liquid metal is added to the feeding side of the control roll set I, and the high temperature zone I17 arranged on the feeding side of the control roll set I is used to keep the liquid metal liquid and fluid. The control roller group I is used to control the forming thickness of the liquid metal, and the cooling zone I18 arranged on the discharge side of the control roller group I is used to cool and shape the liquid metal on the transmission belt I13 into the metal belt 1.

Further, the vertical distance between the upper control roller I14 and the lower control roller I15 is set equal to the sum of the thickness of the transmission belt I13 and the preset thickness of the metal belt 1; the highest point of the lower control roller I and the first The highest points of the driving roller 11 and the second driving roller 12 are level, so that the transmission belt I13 is on a horizontal surface; an overflow control plate I16 is set on the feeding side of the control roller group I, so that the overflow height of the overflow control plate I16 is equal to the upper The lowest point of the control roller I is level, and the overflow collecting trough I is used to recover the overflowing liquid metal at the first transmission roller to recover the overflowing liquid metal. The recovered liquid metal can be recycled. Specifically, the overflow control plate I16 is provided with an overflow port I16a, and the lowest point of the overflow port I16a is flush with the lowest point of the upper control roller I14, as shown in FIG. In this way, the feeding device I adds the liquid metal to the transmission belt I13 between the overflow control plate I and the control roller group I, and the control roller group I controls the circulation height of the liquid metal, thereby controlling the forming thickness of the metal belt 1. In order to prevent the problem of large fluctuations in the thickness of the liquid metal due to excessive liquid metal, the overflow port I16a provided on the overflow control plate I16 is used to discharge the excess liquid metal, and the overflow control plate I16 and the control roller set are maintained. The volume of liquid metal between I is relatively stable, and the forming thickness of the metal belt 1 can be better controlled.

Further, a feeding roller I 28 is provided on the feeding side of the control roller group I, and at least one pushing brush I or a material pushing brush is arranged along the axial direction of the feeding roller I 28 and is used to push the liquid metal to the control roller group I. Paddle I makes the liquid metal fill the gap between the upper control roller I14 and the transmission belt I13. Specifically, the feed roller I28 is set between the overflow control plate I16 and the control roller group I, and is used to push the liquid metal so that the liquid metal always fills the gap between the upper control roller I14 and the transmission belt I1, even if the metal belt 1 is in The molding thickness in the length direction is more uniform.

Further, at least one guide roller I22 is arranged at intervals on the feeding side of the control roller group I. The guide roller I22 is used to spread the liquid metal evenly across the transmission belt I13 along the width direction of the transmission belt I13, so that the liquid metal can be in the width of the transmission belt I13. The direction is evenly distributed, so that the forming thickness of the metal strip 1 in the width direction is more uniform.

Further, if the metal belt is directly wound after being cooled and shaped in the cooling zone I18, before winding the metal belt 1, at least one side surface of the metal belt 1 can be laminated with a layer that prevents two adjacent layers of metal belts from adhering together. Anti-sticking film to prevent two adjacent layers of metal tapes from sticking together after rewinding. In this embodiment, after the metal belt is cooled and formed, the metal belt is also finished. At least one set of finishing roller sets I41 arranged at intervals is used to finish the metal belt 1 so that the thickness and surface accuracy of the metal belt 1 reach the set range. In the finishing process, the finishing temperature is controlled to keep the metal strip in a temperature range that is convenient for its finishing. Finishing can not only control the thickness of the metal strip and the surface accuracy of the metal strip, but also in the finishing process, through the control of the temperature, it can effectively eliminate the internal stress in the metal strip, improve the plasticity of the metal strip, and prevent the metal strip from being inside. Defects such as cracks appear to improve product quality. Preferably, when the metal belt 1 is peeled from the transmission belt I and then the metal belt 1 is finished, after the metal belt is peeled from the transmission belt I and before the metal belt is finished, on at least one side of the metal belt 1 A layer of supporting film 2 used to support the metal belt is laminated, and the supporting film 2 is used to bear the effect of tension to prevent the metal belt 1 from being broken due to its thin thickness.

Further, the metal material used in the metal belt 1 is, but not limited to, metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum, or metal silver; or the metal material used in the metal belt is but not limited to An alloy of at least two of metallic lithium, metallic sodium, metallic potassium, metallic magnesium, metallic calcium, metallic zinc, metallic aluminum and metallic silver. That is, the metal material selected in this embodiment can be used as the active material of the energy storage electrode, that is, the composite metal belt of this embodiment can be used as the energy storage electrode, and the metal belt 1 of this embodiment is preferably made of metal lithium.

Furthermore, the stripper 25 is used to strip the metal belt 1 on the transmission belt I13 to prevent the metal strip 1 from breaking, and the stripper 25 is provided with a metal strip for supporting the metal between the second transmission roller 12 and the first composite mechanism or the second composite mechanism. The supporting surface 26 of the belt 1 further prevents the metal belt 1 from being pulled off under the action of gravity.

Furthermore, on both sides of the transmission belt I13 are respectively provided with side retaining devices for limiting the forming width of the metal belt. The side rib device of this embodiment includes side rib seats 23 respectively located on the upper two sides of the transmission belt I, and the side rib seats 23 are provided with pressure bars 24 for contacting and cooperating with the upper side of the transmission belt I and used to limit the flow range of the liquid metal. The bead 24 is made of a high-temperature resistant and soft material, and the frictional resistance between it and the transmission belt I13 is small; depending on the metal material, the bead 24 also needs to have the characteristics of non-adhesive metal materials, which will not be repeated.

Example 2

As shown in FIG. 5, it is a schematic structural diagram of Embodiment 2 of a production line for continuous casting and rolling of metal strips according to the present invention. The continuous casting and rolling metal strip production line of this embodiment includes:

Winding mechanism Ⅰ30, used for winding the metal belt 1 made;

In this embodiment, the vertical distance between the upper control roller I14 and the first transmission roller 11 is equal to the thickness of the transmission belt I13; the feed side of the control roller group I is provided with a pressure roller I20 pressed on the transmission belt I13, The vertical distance between the roller I20 and the lower control roller I15 is equal to the thickness of the transmission belt I13, and the gap between the upper control roller I14 and the lower control roller I15 in the vertical direction is equal to the thickness of the transmission belt I13 and the metal belt 1 The sum of the preset thicknesses. The pressure roller I20 of this embodiment is provided with an overflow ring groove I21. The depth of the overflow ring groove I21 is greater than or equal to the preset thickness of the metal belt 1. The feeding device I adds liquid metal to the pressure roller I20 and the control roller group I. between. In this way, the problem of large fluctuations in the thickness of the liquid metal due to excessive liquid metal can be prevented. The overflow ring groove I21 provided on the pressure roller I20 is used to discharge the excess liquid metal to maintain the pressure roller I20 and the control roller group I. The capacity of the liquid metal is relatively stable, and the forming thickness of the metal strip 1 can be better controlled. Preferably, the overflow ring grooves I21 are arranged on the pressing roller I20 at intervals along the axial direction. Preferably, the highest point of the first driving roller 11 is higher than the highest point of the second driving roller 12, and the difference between the height of the highest point of the first driving roller 11 and the height of the highest point of the second driving roller 12 is equal to the metal belt 1. In this way, the transmission belt I13 located on the downstream side of the pressure roller I20 can always be kept horizontal, which is convenient for the forming control of the metal belt 1.

The other implementation manners of this embodiment are the same as those of the embodiment 1, and will not be repeated one by one.

Further, the vertical roll gap between the upper control roller I14 and the first transmission roller 11 is set equal to the thickness of the transmission belt I13; a pressure roller I20 pressed on the transmission belt I is set on the feed side of the control roller group I, and The vertical distance between the pressure roller I20 and the lower control roller I15 is set equal to the thickness of the transmission belt I13, and the vertical gap between the upper control roller I14 and the lower control roller I15 is set equal to the thickness of the transmission belt I13 and the metal The sum of the preset thickness of the belt 1; an overflow ring groove I21 is set on the pressure roller I20, the depth of the overflow ring groove I21 is set to be greater than or equal to the preset thickness of the metal belt 1, and the feeding device I adds liquid metal to the pressure Between roller I 20 and control roller group I. In this way, the problem of large fluctuations in the thickness of the liquid metal due to excessive liquid metal can be prevented. The overflow ring groove I21 provided on the pressure roller I20 is used to discharge the excess liquid metal to maintain the pressure roller I20 and the control roller group I. The capacity of the liquid metal is relatively stable, and the forming thickness of the metal strip 1 can be better controlled. Preferably, the overflow ring grooves I21 are arranged on the pressing roller I20 at intervals along the axial direction. Preferably, the highest point of the first driving roller 11 is higher than the highest point of the second driving roller 12, and the difference between the height of the highest point of the first driving roller 11 and the height of the highest point of the second driving roller 12 is equal to the metal belt 1. In this way, the transmission belt I13 located on the downstream side of the pressure roller I20 can always be kept horizontal, which is convenient for the forming control of the metal belt 1.

The other implementations of the production method of the continuous casting and rolling metal strip in this embodiment are the same as those in the embodiment 1, and will not be repeated one by one.

Note: The "liquid metal" mentioned in this article refers to the molten metal whose fluidity reaches the set requirements or the liquid metal whose temperature exceeds the boiling point of the metal material, which will not be repeated here.

The "predetermined thickness of the metal strip" mentioned herein is the thickness value after thermal expansion and contraction are considered, that is, the forming thickness of the metal strip satisfies: h = δH, where h is the forming thickness of the metal strip, and H is the thickness described herein "The preset thickness of the metal strip", δ is the thermal expansion and contraction rate of the metal material.

In the process of producing composite metal belts, depending on the choice of the material of the belt and the metal material used to form the metal belt, the corresponding atmosphere environment and the set temperature and dryness environment need to be used. These environment settings can be set. According to the adjustment and selection of the strip and the metal material, for those skilled in the art, there are no technical obstacles, so it will not be repeated.

Example 3

As shown in FIG. 8, it is a schematic structural diagram of Embodiment 3 of the production line of the continuous casting and rolling composite metal strip of the present invention. The production line for continuous casting and rolling of composite metal strip in this embodiment includes:

Transmission belt mechanism II. The transmission belt mechanism II includes a third transmission roller 61 and a fourth transmission roller 62 at both ends, and a transmission belt Ⅱ63 is sleeved between the third transmission roller 61 and the fourth transmission roller 62;

The unwinding mechanism 80 is used to unwind the strip 3 that moves synchronously with the transmission belt Ⅱ63;

Winding mechanism Ⅱ90, used to wind the composite metal belt 4 made by winding;

The transmission belt mechanism II is provided with a control roller group Ⅱ for controlling the thickness of the metal material layer. The control roller group Ⅱ includes an upper control roller Ⅱ64 located above the transmission belt Ⅱ63 and a lower control roller Ⅱ65 located below the transmission belt Ⅱ63, which controls the feeding of the roller group Ⅱ There is a feeding device II for adding liquid metal on the side, and a high temperature zone II 67 for keeping the liquid metal liquid and fluid on the feeding side of the control roll group II, and a high temperature zone II 67 for keeping the liquid metal liquid and fluidity on the discharge side of the control roll group II. The liquid metal on the strip is cooled and shaped into the cooling zone II 68 of the metal material layer.

In the production line for continuous casting and rolling of composite metal belts in this embodiment, belts II are used to drive belts to move synchronously to reduce the requirements on the tensile strength of the belts, and liquid metal is directly added to the feeding side of the control roll group II, and the control rolls are used. Group II controls the thickness of the liquid metal. The liquid metal moves to the cooling zone II on the discharge side of the control roll group II under the combined action of the control roll group II and the strip. After cooling and shaping in the cooling zone II, the liquid metal is compounded on the strip. Due to the high fluidity of the liquid metal, the thickness of the liquid metal can be controlled to be very thin. When the composite metal strip is used as an energy storage electrode, it can meet the requirements of use; in addition, because the temperature of the liquid metal is relatively high , After the process of cooling from high temperature to low temperature, the bonding strength between the metal material layer and the strip can be improved.

Furthermore, the unwinding mechanism of this embodiment unwinds the strip 3 and is guided by the third drive roller 61 to move synchronously with the drive belt II 63. The thickness control of the liquid metal layer and the metal material layer 5 can be implemented in a variety of ways. This embodiment provides the following two ways to control the thickness of the liquid metal layer and the metal material layer 5.

The first method: the highest point of the lower control roller Ⅱ65 is flush with the highest points of the third drive roller 61 and the fourth drive roller 62, and the transmission belt Ⅱ63 is on the horizontal plane; the upper control roller Ⅱ64 and the lower control roller Ⅱ65 are between The roll gap in the vertical direction is equal to the sum of the thickness of the transmission belt II 63, the thickness of the strip 3, and the preset thickness of the metal material layer 5. The feed side of the control roll group II is provided with an overflow control plate Ⅱ66, and the overflow height of the overflow control plate Ⅱ66 is flush with the lowest point of the upper control roll Ⅱ. Specifically, the overflow control plate II 66 is provided with an overflow port II 66a, and the lowest point of the overflow port II 66a is flush with the lowest point of the upper control roller II 64, as shown in Figure 8-11. In this way, the feeding device II adds the liquid metal to the transmission belt II 63 between the overflow control plate II and the control roller group II, and the control roller group II controls the circulation height of the liquid metal, thereby controlling the forming thickness of the metal material layer 5. In order to prevent the problem of large fluctuations in the thickness of the liquid metal due to excessive liquid metal, the overflow port Ⅱ66a provided on the overflow control plate Ⅱ66 is used to discharge the excess liquid metal and keep the overflow control plate Ⅱ66 and the control roller set. The volume of liquid metal is relatively stable between II, and the forming thickness of the metal material layer 5 can be better controlled.

The second method: the vertical distance between the upper control roller Ⅱ64 and the third transmission roller 61 is equal to the sum of the thickness of the transmission belt Ⅱ63 and the thickness of the strip 3; The vertical distance between the pressure roller Ⅱ70, the pressure roller Ⅱ70 and the lower control roller Ⅱ65 on the transmission belt Ⅱ is equal to the sum of the thickness of the transmission belt Ⅱ63 and the thickness of the strip 3, between the upper control roller Ⅱ64 and the lower control roller Ⅱ65 The roll gap in the vertical direction is equal to the sum of the thickness of the transmission belt II 63, the thickness of the strip 3, and the preset thickness of the metal material layer 5. Specifically, the pressure roller Ⅱ70 is provided with an overflow ring groove Ⅱ71, the depth of the overflow ring groove Ⅱ71 is greater than or equal to the preset thickness of the metal material layer 5. The feeding device Ⅱ adds liquid metal to the pressure roller Ⅱ70 and the control roller group Ⅱ Time, as shown in Figure 12-16. In this way, the problem of large fluctuations in the thickness of the liquid metal due to excessive liquid metal can also be prevented. The overflow ring groove Ⅱ71 provided on the pressure roller Ⅱ70 is used to discharge the excess liquid metal to maintain the pressure roller Ⅱ70 and the control roller group. The volume of liquid metal is relatively stable between II, and the forming thickness of the metal material layer 5 can be better controlled. Preferably, the overflow ring grooves II 71 are arranged on the pressing roller II 70 at intervals along the axial direction. Preferably, the highest point of the third transmission roller 61 is higher than the highest point of the fourth transmission roller 62, and the difference between the height of the highest point of the third transmission roller 61 and the height of the highest point of the fourth transmission roller 62 is equal to the metal material layer The preset thickness of 5, in this way, can keep the transmission belt Ⅱ63 at the downstream side of the pressing roller Ⅱ70 always level, which is convenient for the forming control of the metal material layer 5.

Furthermore, the third driving roller 61 is provided with an overflow receiving tank II for recovering the overflowing liquid metal, which is used for recovering the overflowing liquid metal, and the recovered liquid metal can be recycled.

Furthermore, the feeding side of the control roller group II is provided with a feeding roller Ⅱ78, and the feeding roller Ⅱ78 is provided with at least one pushing brush II or a pushing paddle arranged along its axial direction and used to push the liquid metal to the control roller group II. Ⅱ. Specifically, the feeding roller Ⅱ 78 is arranged between the overflow control plate Ⅱ and the control roller group Ⅱ or between the pressure roller Ⅱ 70 and the control roller group Ⅱ, and is used to push the liquid metal so that the liquid metal is always filled with the upper control roller Ⅱ 64 and the control roller group Ⅱ. The gap between the strips 3 is even more uniform in the forming thickness of the metal material layer 5 in the length direction.

Furthermore, the feeding side of the control roller group II is also provided with at least one guide roller Ⅱ72 for evenly spreading the liquid metal along the width direction of the strip, so that the liquid metal can be evenly distributed in the width direction of the strip 3. The distribution makes the forming thickness of the metal material layer 5 in the width direction more uniform.

Further, the continuous casting and rolling composite metal strip production line of this embodiment also includes a finishing zone Ⅱ100 arranged between the discharge side of the control roll group Ⅱ and the winding mechanism Ⅱ90, and at least one group is arranged in the finishing zone Ⅱ100. The finishing roll set II101 is used for finishing the metal material layer after cooling and shaping in the cooling zone II. Specifically, the finishing zone II 100 is provided with a finishing temperature control device II for controlling the finishing temperature. By setting the finishing zone II, not only the thickness of the metal material layer can be finished and the surface accuracy of the metal material layer can be controlled, but also the internal stress in the metal material layer can be effectively eliminated by controlling the temperature during the finishing process and improve The plasticity of the metal material layer prevents defects such as cracks in the metal material layer and improves product quality. Preferably, on the upstream side of the finishing zone II, a roller set II 69 can also be provided to roll the composite metal strip, so that the metal material layer 5 is denser and more uniform.

Further, the strip 3 adopts but is not limited to copper strip, aluminum strip, steel strip, nickel strip, silver strip, gold strip or a strip of metal material and non-metal material composite, that is, the strip 3 of this embodiment can be used as The current collector of the energy storage electrode. Specifically, the strip can be a mesh foil, and through holes can be arranged in an array on the strip. When the metal material layer is provided on only one side of the strip 3, the metal material layer is embedded in the mesh or through holes of the strip 3 to increase the bonding force. When the metal material is provided on both sides of the strip 3 When layering, the metal material layers on both sides of the strip 3 are connected together through meshes or through holes to further increase the bonding force. As shown in FIG. 17a, it is a schematic diagram of the structure after the metal material layer 5 is compounded on one side of the strip 3 when the strip 3 adopts a solid structure. As shown in Fig. 17b, it is a schematic diagram of the structure after the metal material layer 5 is laminated on one side of the strip 3 when the through holes are provided on the strip 3. Specifically, the metal material uses but is not limited to metallic lithium, metallic sodium, metallic potassium, metallic magnesium, metallic calcium, metallic zinc, metallic aluminum or metallic silver; or the metallic material uses but not limited to metallic lithium, metallic sodium, metallic potassium, metal An alloy of at least two of magnesium, metallic calcium, metallic zinc, metallic aluminum and metallic silver. That is, the metal material selected in this embodiment can be used as the active material of the energy storage electrode, that is, the composite metal strip of this embodiment can be used as the energy storage electrode. Specifically, the strip material in this embodiment is copper strip, and the metal material is Lithium metal. Specifically, the temperature of the liquid metal of the metallic lithium material in this embodiment is equivalent to the melting point of metallic copper. For example, the temperature range of the liquid metallic lithium can be 800-1400°C. In this way, after the liquid metallic lithium is sprayed on the copper strip, the metal can be effectively strengthened. The binding force of lithium and copper tape.

Further, the production line of the continuous casting and rolling composite metal strip of this embodiment also includes an edge pressing device for pressing on the edges of both sides of the strip 3 and forming a blank area on both sides of the strip 3 that is not covered by the metal material layer. . Specifically, in the initial state, there is no metal material layer formed on the two sides of the strip, and the crimping device includes upper crimping seats 73 respectively located on the upper two sides of the transmission belt Ⅱ 63, and the bottom of the upper crimping seat 73 is provided with The upper pressing edge 74 is in contact with the upper side edge of the strip 3; as shown in Figs. 9 and 10. Or, the crimping device includes an upper crimping seat 73 and a lower crimping seat 75 located on the upper and lower sides of the transmission belt Ⅱ 63 respectively, and the bottom surface of the upper crimping seat 73 is provided for contact with the upper side edge of the strip 3 The top surface of the matching upper pressing edge 74 and the lower pressing edge seat 75 are provided with a lower pressing edge 76 for contacting and fitting with the lower side edge of the strip 3, as shown in FIGS. 14 and 15. The lower holding edge 24 and the lower holding edge 76 are made of high-temperature resistant and soft materials, and the frictional resistance between the lower holding edge 24 and the lower holding edge 76 is small. According to the different metal materials, the lower holding edge 24 and the lower holding edge 76 are still It needs to have the characteristics of non-adhesive metal materials, which will not be repeated. By setting the edge holding device, it is possible to effectively prevent the liquid metal from entering the edges of both sides of the strip 3, that is, the blank areas 6 that are not covered by the metal material layer are formed on the edges of both sides of the strip 3. When the composite metal strip is used as energy storage In the case of electrodes, the blank area can be used as the tabs of the current collector, instead of processing the tabs on the strip 3 separately.

The specific implementation of the continuous casting and rolling composite metal strip production method of this embodiment will be described in detail below in conjunction with the above-mentioned continuous casting and rolling composite metal strip production line.

In the production method of the continuous casting and rolling composite metal strip in this embodiment, the strip 3 is unwinded and the strip is moved synchronously with the transmission belt Ⅱ 63. Liquid metal is added to the feeding side of the control roll group Ⅱ, and the liquid metal is added to the control roll group Ⅱ. The high temperature zone Ⅱ67 on the feeding side keeps the liquid metal liquid and fluidity. The thickness of the liquid metal is controlled by the control roller set Ⅱ, and the cooling zone Ⅱ68 on the discharge side of the control roller set Ⅱ is used to make the liquid metal on the strip 3 The metal material layer composited on the strip 3 is cooled and shaped to obtain a composite metal strip 4.

The production method of the continuous casting and rolling composite metal belt of this embodiment uses the transmission belt II to drive the belt material to move synchronously, which reduces the requirement on the tensile strength of the belt material. The liquid metal is directly added to the feeding side of the control roll group II. The control roll group II controls the thickness of the liquid metal. The liquid metal moves to the cooling zone II on the discharge side of the control roll group II under the joint action of the control roll group II and the strip. Due to the high fluidity of the liquid metal, the thickness of the liquid metal can be controlled to be very thin on the metal material layer on the material. When the composite metal strip is used as an energy storage electrode, it can meet the requirements of use; in addition, due to the temperature of the liquid metal Higher, through the process of cooling from high temperature to low temperature, the bonding strength between the metal material layer and the strip can be improved.

Further, under the guidance of the third driving roller 61, the strip 3 enters the transmission belt mechanism II and moves synchronously with the transmission belt Ⅱ63, that is, the strip 3 moves synchronously with the transmission belt Ⅱ63 after bypassing the transmission roller 11. The maximum point is the highest point of strip 3. The thickness control of the liquid metal and the metal material layer 5 can be achieved in a variety of ways. This embodiment provides the following two ways to control the thickness of the liquid metal layer and the metal material layer 5.

The first method: Set the vertical distance between the upper control roller II 64 and the lower control roller II 654 to be equal to the sum of the thickness of the transmission belt II 63, the thickness of the strip 3 and the preset thickness of the metal material layer 5; The highest point of the lower control roller II 65 is flush with the highest points of the third drive roller 61 and the fourth drive roller 62, so that the drive belt II 63 is on a horizontal surface. The feed side of the control roll group II is provided with an overflow control plate Ⅱ66, and the overflow height of the overflow control plate Ⅱ66 is flush with the lowest point of the upper control roll Ⅱ. Specifically, the overflow control plate II 66 is provided with an overflow port II 66a, and the lowest point of the overflow port II 66a is flush with the lowest point of the upper control roller II 64, as shown in Figure 8-11. In this way, the feeding device II adds the liquid metal to the transmission belt II 63 between the overflow control plate II and the control roller group II, and the control roller group II controls the circulation height of the liquid metal, thereby controlling the forming thickness of the metal material layer 5. In order to prevent the problem of large fluctuations in the thickness of the liquid metal due to excessive liquid metal, the overflow port Ⅱ66a provided on the overflow control plate Ⅱ66 is used to discharge the excess liquid metal, and the overflow control plate Ⅱ66 and the control roller set are maintained. The volume of liquid metal is relatively stable between II, and the forming thickness of the metal material layer 5 can be better controlled.

The second method: Set the vertical gap between the upper control roller Ⅱ64 and the third transmission roller 61 to be equal to the sum of the thickness of the transmission belt Ⅱ63 and the thickness of the strip 3; The pressure roller Ⅱ70 pressed on the transmission belt Ⅱ is set on the side, the vertical distance between the pressure roller Ⅱ70 and the lower control roller Ⅱ65 is set equal to the sum of the thickness of the transmission belt Ⅱ63 and the thickness of the strip 3, and the upper control roller The roll gap in the vertical direction between Ⅱ64 and the lower control roll Ⅱ65 is set equal to the sum of the thickness of the transmission belt Ⅱ63, the thickness of the strip 3 and the preset thickness of the metal material layer 5; an overflow ring is set on the pressure roller Ⅱ70 For the groove II 71, the depth of the overflow ring groove II 71 is set to be greater than or equal to the preset thickness of the metal material layer 5, and the feeding device II adds liquid metal between the pressing roller II 70 and the control roller group II. As shown in Figure 12-16. In this way, the problem of large fluctuations in the thickness of the liquid metal due to excessive liquid metal can also be prevented. The overflow ring groove Ⅱ71 provided on the pressure roller Ⅱ70 is used to discharge the excess liquid metal to maintain the pressure roller Ⅱ70 and the control roller group. The volume of liquid metal is relatively stable between II, and the forming thickness of the metal material layer 5 can be better controlled. Preferably, the overflow ring grooves II 71 are arranged on the pressing roller II 70 at intervals along the axial direction. Preferably, the highest point of the third transmission roller 61 is higher than the highest point of the fourth transmission roller 62, and the difference between the height of the highest point of the third transmission roller 61 and the height of the highest point of the fourth transmission roller 62 is equal to the metal material layer The preset thickness of 5, in this way, can keep the transmission belt Ⅱ63 at the downstream side of the pressing roller Ⅱ70 always level, which is convenient for the forming control of the metal material layer 5.

Further, a feeding roller II 78 is provided on the feeding side of the control roller group II, and at least one pusher brush II or a material pushing brush arranged along its axial direction and used to push the liquid metal to the control roller group II is provided on the feeding roller II 78 Paddle II makes the liquid metal fill the gap between the upper control roll II and the strip. Specifically, the feeding roller Ⅱ 78 is arranged between the overflow control plate Ⅱ and the control roller group Ⅱ or between the pressure roller Ⅱ 70 and the control roller group Ⅱ, and is used to push the liquid metal so that the liquid metal is always filled with the upper control roller Ⅱ 64 and the control roller group Ⅱ. The gap between the strips 3 is even more uniform in the forming thickness of the metal material layer 5 in the length direction.

Furthermore, at least one guide roller Ⅱ72 is arranged at intervals on the feeding side of the control roller group II. The guide roller Ⅱ72 is used to uniformly spread the liquid metal along the width direction of the transmission belt Ⅱ, so that the metal material layer 5 is in the width direction. The forming thickness is more uniform.

Further, when the metal material layer is cooled and formed, the metal material layer is finished, and the metal material layer 5 is finished by using at least one set of finishing roller set II101 arranged at intervals to make the thickness and surface accuracy of the metal material layer 5 reach the set value. range. Specifically, during the finishing process, it is also necessary to control the finishing temperature to keep the metal material layer within a temperature range that is convenient for its finishing. Finishing can not only finish the thickness of the metal material layer and control the surface accuracy of the metal material layer, but also during the finishing process, by controlling the temperature, it can effectively eliminate the internal stress in the metal material layer and improve the plasticity of the metal material layer. , Prevent defects such as cracks in the metal material layer, and improve product quality.

Further, the strip 3 adopts but is not limited to copper strip, aluminum strip, steel strip, nickel strip, silver strip, gold strip or a strip of metal material and non-metal material composite, that is, the strip 3 of this embodiment can be used as The current collector of the energy storage electrode. Specifically, the strip can be a mesh foil, and through holes can be arranged in an array on the strip. When the metal material layer is provided on only one side of the strip 3, the metal material layer is embedded in the mesh or through holes of the strip 3 to increase the bonding force. When the metal material is provided on both sides of the strip 3 When layering, the metal material layers on both sides of the strip 3 are connected together through meshes or through holes to further increase the bonding force. As shown in FIG. 17a, it is a schematic diagram of the structure after the metal material layer 5 is compounded on one side of the strip 3 when the strip 3 adopts a solid structure. As shown in FIG. 17b, it is a schematic diagram of the structure after the metal material layer 5 is composited on one side of the strip 3 when the through holes are provided on the strip 3. Specifically, the metal material uses but is not limited to metallic lithium, metallic sodium, metallic potassium, metallic magnesium, metallic calcium, metallic zinc, metallic aluminum or metallic silver; or the metallic material uses but not limited to metallic lithium, metallic sodium, metallic potassium, metal An alloy of at least two of magnesium, metallic calcium, metallic zinc, metallic aluminum and metallic silver. That is, the metal material selected in this embodiment can be used as the active material of the energy storage electrode, that is, the composite metal strip of this embodiment can be used as the energy storage electrode. Specifically, the strip material in this embodiment is copper strip, and the metal material is Lithium metal. Specifically, the temperature of the liquid metal of the metallic lithium material in this embodiment is equivalent to the melting point of metallic copper. For example, the temperature range of the liquid metallic lithium can be 800-1400°C. In this way, after the liquid metallic lithium is sprayed on the copper strip, the metal can be effectively strengthened. The binding force of lithium and copper tape.

Further, the rolling width of the metal material layer 5 is controlled, and a blank area 6 that is not covered with the metal material layer is formed on both sides of the strip 3 respectively. Specifically, in this embodiment, a crimping device is used to press the edges on both sides of the strip 3 so that liquid metal cannot flow into the area pressed by the crimping device, and finally a blank area 6 is formed on both sides of the strip. Specifically, in the initial state, there is no metal material layer formed on the two sides of the strip 3, and only the upper edge holder 73 is provided on the upper two sides of the transmission belt Ⅱ 63, and the bottom surface of the upper edge holder 73 is provided for The upper pressing edge 74 contacting and matching with the upper side edge of the strip 3; as shown in Figs. 9 and 10. Or, an upper crimp seat 73 and a lower crimp seat 75 are provided on the upper and lower sides of the transmission belt Ⅱ 63, respectively, and an upper crimp seat 73 and a lower crimp seat 75 are provided on the bottom surface of the upper crimp seat 73 for contact and fit with the upper side edge of the strip 3 The pressing edge 74 is provided on the top surface of the lower pressing edge seat 75 with a lower pressing edge 76 for contacting and cooperating with the lower side edge of the strip 3, as shown in FIGS. 14 and 15. The lower holding edge 24 and the lower holding edge 76 are made of high-temperature resistant and soft materials, and the frictional resistance between the lower holding edge 24 and the lower holding edge 76 is small. According to the different metal materials, the lower holding edge 24 and the lower holding edge 76 are still It needs to have the characteristics of non-adhesive metal materials, which will not be repeated. By setting the edge holding device, it is possible to effectively prevent the liquid metal from entering the edges of both sides of the strip 3, that is, the blank areas 6 that are not covered by the metal material layer are formed on the edges of both sides of the strip 3. When the composite metal strip is used as energy storage In the case of electrodes, the blank area can be used as the tabs of the current collector, instead of processing the tabs on the strip 3 separately.

Example 4

As shown in FIG. 18, it is a schematic diagram of the structure of Embodiment 4 of the production line of the continuous casting and rolling composite metal strip of the present invention. The production line for continuous casting and rolling of composite metal strip in this embodiment includes:

Furthermore, the composite metal strip rolling production equipment of this embodiment also includes an edge pressing device for pressing on the edges of both sides of the strip 3 and forming a blank area 6 that is not covered by the metal material layer on the edges of both sides of the strip 3. In the initial state, the metal material layer 5 has been rolled on one side of the strip 3, and the edge holding device includes an upper edge holder 73 and a lower edge holder 75 located on the upper and lower sides of the transmission belt II, respectively. The bottom surface of the edge holder 73 is provided with an upper edge 74 for contact and fit with the upper side edge of the strip, and the top surface of the lower edge holder 75 is provided with a lower edge 74 for contact and fit with the lower side edge of the strip. 76. Specifically, at this time, under the transmission belt II 63 on the feeding side of the control roll group II, there is a low temperature zone 77 for preventing the metal material layer 5 from being melted.

Other implementations of the production line for continuous casting and rolling of composite metal strips in this example are the same as those of Example 1, and will not be described one by one.

Further, the rolling width of the metal material layer 5 is controlled, and a blank area 6 that is not covered with the metal material layer is formed on both sides of the strip 3 respectively. Specifically, in this embodiment, a crimping device is used to press the edges on both sides of the strip 3 so that liquid metal cannot flow into the area pressed by the crimping device, and finally a blank area 6 is formed on both sides of the strip. Specifically, in the initial state, a metal material layer 5 has been formed on one side of the strip 3, and an upper crimp seat 73 and a lower crimp seat 75 are provided on the upper and lower sides of the transmission belt Ⅱ 63, respectively. The bottom surface of the crimp seat 73 is provided with an upper crimp 74 for contact and fit with the upper side edge of the strip 3, and a lower crimp 74 for contact and fit with the lower side edge of the strip 3 is provided on the top surface of the lower crimp seat 75 25. Specifically, a low temperature zone 77 for preventing the rolled metal material layer from being melted is provided below the transmission belt II 63 on the feeding side of the control roll group II. The lower holding edge 24 and the lower holding edge 76 are made of high-temperature resistant and soft materials, and the frictional resistance between the lower holding edge 24 and the lower holding edge 76 is small. According to the different metal materials, the lower holding edge 24 and the lower holding edge 76 are still It needs to have the characteristics of non-adhesive metal materials, which will not be repeated. By setting the edge holding device, it is possible to effectively prevent the liquid metal from entering the edges of both sides of the strip 3, that is, the blank areas 6 that are not covered by the metal material layer are formed on the edges of both sides of the strip 3. When the composite metal strip is used as energy storage In the case of electrodes, the blank area can be used as the tabs of the current collector, instead of processing the tabs on the strip 3 separately.

The other implementations of the production method of the continuous casting and rolling composite metal strip in this embodiment are the same as those in the embodiment 1, and will not be described one by one.

The “predetermined thickness of the metal material layer” mentioned herein is the thickness value after thermal expansion and contraction are considered, that is, the forming thickness of the metal material layer satisfies: h=δH, where h is the forming thickness of the metal material layer, and H is The "predetermined thickness of the metallic material layer" mentioned herein, δ is the thermal expansion and contraction rate of the metallic material.

In the process of producing composite metal belts, depending on the choice of the material of the strip and the metal material used to form the metal material layer, the corresponding atmosphere environment and the set temperature and dryness environment need to be used. These environmental settings are all It can be adjusted and selected according to the strips and metal materials. For those skilled in the art, there are no technical obstacles and will not be repeated here.

The above-mentioned embodiments are only preferred embodiments for fully explaining the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.

Claims

A production line for continuous casting and rolling of metal strips, which is characterized in that it comprises:

Transmission belt mechanism I, the transmission belt mechanism I includes a first transmission roller and a second transmission roller located at both ends, and a transmission belt I is sleeved between the first transmission roller and the second transmission roller;

Winding mechanism I, used to wind the metal belt made;

The transmission belt mechanism I is provided with a control roller group I for controlling the thickness of the metal belt. The control roller group I includes an upper control roller I located above the transmission belt I and a lower control roller I located below the transmission belt I. The feeding side of the control roll set I is provided with a feeding device I for adding liquid metal, and the feeding side of the control roll set I is provided with a high temperature zone I for keeping the liquid metal in liquid state and fluidity. The discharge side of the control roll group I is provided with a cooling zone I for cooling and shaping the liquid metal into a metal strip.
The production line of continuous casting and rolling metal strip according to claim 1, characterized in that: the highest point of the lower control roller I is flush with the highest points of the first transmission roller and the second transmission roller, and the highest points of the lower control roller I are flush with the highest points of the first transmission roller and the second transmission roller. The transmission belt I is located on a horizontal plane; the roll gap in the vertical direction between the upper control roller I and the lower control roller I is equal to the sum of the thickness of the transmission belt I and the preset thickness of the metal belt; the control The feed side of the roller set I is provided with an overflow control plate I, and the overflow height of the overflow control plate I is flush with the lowest point of the upper control roller I.
The continuous casting and rolling metal belt production line according to claim 1, wherein the vertical distance between the upper control roller I and the first transmission roller is equal to the thickness of the transmission belt I; The feed side of the control roller group I is provided with a pressing roller I pressed on the transmission belt I, and the vertical distance between the pressing roller I and the lower control roller I is equal to the thickness of the transmission belt I , The roll gap in the vertical direction between the upper control roller I and the lower control roller I is equal to the sum of the thickness of the transmission belt I and the preset thickness of the metal belt;

The pressure roller I is provided with an overflow ring groove I, the depth of the overflow ring groove I is greater than or equal to the preset thickness of the metal strip, and the feeding device I adds liquid metal to the pressure roller I and the Between control roller group I.
The continuous casting and rolling metal strip production line according to claim 3, wherein the highest point of the first transmission roller is higher than the highest point of the second transmission roller, and the highest point of the first transmission roller is The difference between the height of the dot and the height of the highest point of the second transmission roller is equal to the preset thickness of the metal belt.
The production line for continuous casting and rolling of metal strip according to any one of claims 2 to 4, characterized in that: the first transmission roller is provided with an overflow receiving trough I for recovering overflow liquid metal.
The continuous casting and rolling metal strip production line according to claim 1, characterized in that: the feeding side of the control roller group I is provided with a feeding roller I, and the feeding roller I is provided with at least one along its axial direction. The direction is set and used to push the liquid metal to the pushing brush I or the pushing paddle I of the control roller group I.
The production line of continuous casting and rolling metal belt according to claim 1, characterized in that: the feeding side of the control roll group I is also provided with at least one spaced apart for making the liquid metal evenly distributed along the width direction of the transmission belt I The guide roller I of the full transmission belt I.
The production line of continuous casting and rolling metal belt according to claim 1, characterized in that: between the winding mechanism I and the transmission belt mechanism I is provided with an anti-sticking film for compounding at least one side of the metal belt The first compound agency.
The continuous casting and rolling metal strip production line according to claim 1, characterized in that it further comprises a finishing zone I arranged between the discharge side of the control roll group I and the winding mechanism I, and the In the finishing zone I, at least one set of finishing rolls I for finishing the metal belt cooled and shaped by the cooling zone I is arranged at intervals.
The production line for continuous casting and rolling of metal strip according to claim 9, characterized in that: the finishing zone I is provided with a finishing temperature control device I for controlling the finishing temperature.
The production line of continuous casting and rolling metal strip according to claim 9, characterized in that: the finishing zone I is arranged between the winding mechanism I and the second transmission roller, and the second A second composite mechanism for composite supporting film on at least one side surface of the metal belt is provided between the driving roller and the finishing zone I.
The continuous casting and rolling metal strip production line according to claim 1, wherein the metal material used in the metal strip adopts but is not limited to metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, and metal zinc. , Metal aluminum or metal silver; or the metal material used in the metal belt adopts but is not limited to at least two of metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal zinc, metal aluminum and metal silver. Compared with the alloy.
The production line of continuous casting and rolling metal belt according to claim 1, characterized in that: the second transmission roller is provided with a stripper for peeling the metal belt from the transmission belt I.
The continuous casting and rolling metal belt production line according to any one of claims 1-4, 6-13, characterized in that it further comprises a stopper arranged on both sides of the transmission belt I and used to limit the forming width of the metal belt.边装置。 Side device.
The production line of continuous casting and rolling metal belt according to claim 14, characterized in that: the edge retaining device includes edge retaining seats respectively located on the upper two sides of the transmission belt I, and the edge retaining seats are provided with The upper side of the transmission belt I is in contact with a bead which is used to limit the flow range of the liquid metal.
A production method of continuous casting and rolling metal strip, characterized in that: liquid metal is added to the feeding side of the control roll group I, and the high temperature zone I arranged on the feeding side of the control roll group I is used to keep the liquid metal liquid and flowing The control roller group I is used to control the forming thickness of the liquid metal, and the cooling zone I arranged on the discharge side of the control roller group I is used to cool and shape the liquid metal on the transmission belt I into a metal belt.
The method for producing a continuous casting and rolling metal belt according to claim 16, wherein the vertical distance between the upper control roll I and the lower control roll I is set equal to the thickness of the transmission belt I and The sum of the preset thickness of the metal belt; the highest point of the lower control roller I is set to be flush with the highest points of the first transmission roller and the second transmission roller, so that the transmission belt I is on a horizontal surface; the feeding of the control roller group I An overflow control plate I is installed on the side, so that the overflow height of the overflow control plate I is flush with the lowest point of the upper control roller I.
The production method of continuous casting and rolling metal belt according to claim 16, characterized in that: the vertical roll gap between the upper control roller I and the first transmission roller is set equal to the thickness of the transmission belt I; The feed side of the control roller group I is provided with a pressing roller I pressed on the transmission belt I, and the vertical distance between the pressing roller I and the lower control roller I is set equal to the thickness of the transmission belt I , Set the vertical gap between the upper control roller I and the lower control roller I to be equal to the sum of the thickness of the transmission belt I and the preset thickness of the metal belt; set on the pressure roller I Overflow ring groove I, the depth of the overflow ring groove I is set to be greater than or equal to the preset thickness of the metal strip, and the feeding device I adds liquid metal to the pressure roller I and the control roller group I between.
The production method of continuous casting and rolling metal strip according to claim 18, characterized in that: the highest point of the first transmission roller is set higher than the highest point of the second transmission roller, and the highest point is located at the The difference between the height of the highest point of the first transmission roller and the height of the highest point of the second transmission roller is equal to the preset thickness of the metal belt.
The production method of continuous casting and rolling metal strip according to any one of claims 17-19, characterized in that the overflow receiving trough I is used to recover the overflowing liquid metal at the first driving roller.
The production method of continuous casting and rolling metal strip according to claim 16, characterized in that: a feeding roller I is arranged on the feeding side of the control roller group I, and at least one feeding roller I is arranged along the feeding roller I It is arranged in the axial direction and used to push the liquid metal to the pushing brush I or the pushing paddle I of the control roller group I, so that the liquid metal fills the gap between the upper control roller I and the transmission belt I.
The production method of continuous casting and rolling metal strip according to claim 16, characterized in that: at least one guide roller I is arranged at intervals on the feeding side of the control roll group I, and the liquid metal is moved along with the guide roller I The width direction of the transmission belt I is evenly covered with the transmission belt I.
The production method of continuous casting and rolling metal strip according to claim 16, characterized in that: before winding the metal strip, a layer is laminated on at least one side of the metal strip to prevent the adhesion of two adjacent metal strips Release film together.
The production method of continuous casting and rolling metal strip according to claim 16, characterized in that: after the metal strip is cooled and formed, the metal strip is finished, using at least one set of finishing rolls arranged at intervals. Said metal belt makes the thickness and surface accuracy of the metal belt reach the set range.
The production method of continuous casting and rolling metal strip according to claim 24, characterized in that the finishing temperature is controlled to keep the metal strip within a temperature range convenient for its finishing.
The production method of continuous casting and rolling metal belt according to claim 24, characterized in that: when the metal belt is peeled from the transmission belt I and then the metal belt is finished, the metal belt is removed from the transmission belt I After peeling and before finishing the metal belt, a layer of supporting film for supporting the metal belt is laminated on at least one side of the metal belt.
The production method of continuous casting and rolling metal strip according to claim 16, characterized in that: the metal material used in the metal strip adopts but is not limited to metal lithium, metal sodium, metal potassium, metal magnesium, metal calcium, metal Zinc, metallic aluminum or metallic silver; or the metallic material used in the metallic belt adopts but is not limited to at least two of metallic lithium, metallic sodium, metallic potassium, metallic magnesium, metallic calcium, metallic zinc, metallic aluminum and metallic silver The proportioned alloy.
The method for producing a continuous casting and rolling metal belt according to claim 16, wherein the metal belt is peeled off the transmission belt I by a stripper.
The production method of continuous casting and rolling metal belt according to any one of claims 16-19, 21-28, characterized in that: two sides of the transmission belt I are respectively provided with edge retaining devices for limiting the forming width of the metal belt.
The production method of continuous casting and rolling metal belt according to claim 29, characterized in that: said side retaining device comprises side retaining seats respectively located on two sides above the transmission belt I, and said side retaining seats are provided with A bead that contacts and cooperates with the upper side of the transmission belt I and is used to limit the flow range of the liquid metal.
A production line for continuous casting and rolling of composite metal strip, which is characterized in that it comprises:

Transmission belt mechanism II, the transmission belt mechanism II includes a third transmission roller and a fourth transmission roller at both ends, and a transmission belt II is sleeved between the third transmission roller and the fourth transmission roller;

Unwinding mechanism for unwinding strips that move synchronously with the drive belt II;

Winding mechanism II, used to wind the composite metal belt made by winding;

The transmission belt mechanism II is provided with a control roller group II for controlling the thickness of the metal material layer, and the control roller group II includes an upper control roller II located above the transmission belt II and a lower control roller II located below the transmission belt II The feeding side of the control roll group II is provided with a feeding device II for adding liquid metal, and the feeding side of the control roll group II is provided with a high temperature zone II for keeping the liquid metal in a liquid state and fluidity, A cooling zone II for cooling and shaping the liquid metal on the strip into a metal material layer is provided on the discharge side of the control roll group II.
The production line of continuous casting and rolling composite metal belt according to claim 31, characterized in that: the unwinding mechanism unwinds the strip and is guided by the third transmission roller to move synchronously with the transmission belt II.
The production line of continuous casting and rolling composite metal strip according to claim 32, characterized in that: the highest point of the lower control roller II is flush with the highest points of the third and fourth transmission rollers, and makes The transmission belt II is located on a horizontal plane; the roll gap in the vertical direction between the upper control roller II and the lower control roller II is equal to the thickness of the transmission belt II, the thickness of the strip and the preset value of the metal material layer The sum of the thickness; the feed side of the control roll group II is provided with an overflow control plate II, and the overflow height of the overflow control plate II is flush with the lowest point of the upper control roll II.
The production line of continuous casting and rolling composite metal belt according to claim 32, characterized in that: the vertical distance between the upper control roller II and the third transmission roller is equal to the thickness of the transmission belt II And the thickness of the strip; the feed side of the control roller group II is provided with a pressure roller II pressed on the transmission belt II, the pressure roller II and the lower control roller II in the vertical direction The distance is equal to the sum of the thickness of the transmission belt II and the thickness of the strip, and the gap between the upper control roller II and the lower control roller II in the vertical direction is equal to the thickness of the transmission belt II, the thickness of the strip and The sum of preset thicknesses of the metal material layers;

The pressure roller II is provided with an overflow ring groove II, the depth of the overflow ring groove II is greater than or equal to the preset thickness of the metal material layer, and the feeding device II adds liquid metal to the pressure roller II and the metal material layer. Said control roller group Ⅱ.
The production line of continuous casting and rolling composite metal belt according to claim 34, characterized in that: the highest point of the third transmission roller is higher than the highest point of the fourth transmission roller, and the The difference between the height of the highest point and the height of the highest point of the fourth transmission roller is equal to the preset thickness of the metal material layer.
The production line for continuous casting and rolling of composite metal strip according to any one of claims 33-35, characterized in that: the third driving roller is provided with an overflow receiving trough II for recovering overflow liquid metal.
The production line of continuous casting and rolling composite metal strip according to claim 31, characterized in that: the feeding side of the control roll group II is provided with a feeding roller II, and the feeding roller II is provided with at least one along its axis It is arranged in the direction and used to push the liquid metal to the pushing brush II or the pushing paddle II of the control roller group II.
The production line of continuous casting and rolling composite metal strip according to claim 31, characterized in that: the feeding side of the control roll group II is also provided with at least one spaced apart for making the liquid metal uniform along the width direction of the strip. The guide roll II covered with the strip.
The production line for continuous casting and rolling of composite metal strip according to claim 31, characterized in that it further comprises a finishing zone II arranged between the discharge side of the control roll group II and the winding mechanism II, so In the finishing zone II, at least one set of finishing roller sets II for finishing the metal material layer cooled and shaped by the cooling zone II is arranged at intervals.
The production line for continuous casting and rolling of composite metal strip according to claim 40, characterized in that: the finishing zone II is provided with a finishing temperature control device II for controlling the finishing temperature.
The production line of continuous casting and rolling composite metal strip according to claim 31, characterized in that: the strip is made of but not limited to copper strip, aluminum strip, steel strip, nickel strip, silver strip, gold strip or metal materials and Composite strips of non-metallic materials.
The production line of continuous casting and rolling composite metal strip according to claim 11, characterized in that: the strip is a mesh foil or the strip is provided with through holes in an array.
The production line for continuous casting and rolling of composite metal strip according to claim 31, characterized in that: the metal material used for rolling the metal material layer adopts but is not limited to metal lithium, metal sodium, metal potassium, metal magnesium, metal Calcium, metallic zinc, metallic aluminum or metallic silver; or the metallic material adopts but not limited to at least two proportions of metallic lithium, metallic sodium, metallic potassium, metallic magnesium, metallic calcium, metallic zinc, metallic aluminum and metallic silver Alloy.
The production line of continuous casting and rolling composite metal strip according to any one of claims 31-35, 37-43, characterized in that it further comprises a method for pressing on both sides of the strip and making the two sides of the strip An edge pressing device that does not cover the blank area of the metal material layer is formed.
The production line of continuous casting and rolling composite metal strip according to claim 44, characterized in that: in the initial state, no metal material layer is formed on both sides of the strip, and the edge pressing device includes The upper crimping seats on both sides of the upper side of the transmission belt II, the bottom surface of the upper crimping seat is provided with upper crimps for contacting and cooperating with the upper side edge of the strip; or, the crimping devices include The upper and lower sides of the upper and lower sides of the drive belt II are provided with an upper crimp for contact and fit with the upper side edge of the strip on the bottom surface of the upper crimp seat, so The top surface of the lower pressing seat is provided with a lower pressing edge for contacting and matching with the edge of the lower side of the strip.
The production line of continuous casting and rolling composite metal strip according to claim 44, characterized in that: in the initial state, the metal material layer is already formed on one side of the strip, and the edge pressing device includes The upper and lower sides of the upper and lower sides of the drive belt II are provided with an upper crimp for contact and fit with the upper side edge of the strip on the bottom surface of the upper crimp seat, so The top surface of the lower pressing seat is provided with a lower pressing edge for contacting and matching with the edge of the lower side of the strip.
The production line of continuous casting and rolling composite metal belt according to claim 46, characterized in that: between the lower control roll II and the first transmission belt II is provided with a cold and warm zone located below the transmission belt II, and The cold temperature zone is used to prevent the formed metal material layer from being melted.
A production method of continuous casting and rolling composite metal belt, which is characterized in that: unwinding the strip and making the strip move synchronously with the transmission belt II, adding liquid metal to the feeding side of the control roll group II, and using the control roll The high temperature zone II on the feed side of the group II keeps the liquid metal liquid and fluidity, the thickness of the liquid metal is controlled by the control roll group II, and the cooling zone II on the discharge side of the control roll group II is used to make the liquid metal on the strip The metal is cooled and shaped into a metal material layer composited on the strip to obtain a composite metal strip.
The production method of continuous casting and rolling composite metal belt according to claim 48, characterized in that: the belt material enters the transmission belt mechanism II under the guiding action of the third transmission roller and moves synchronously with the transmission belt II.
The method for producing a continuous casting and rolling composite metal belt according to claim 49, wherein the vertical distance between the upper control roll II and the lower control roll II is set equal to the thickness of the transmission belt II The thickness of the strip and the sum of the preset thickness of the metal material layer; the highest point of the lower control roller II is set to be flush with the highest points of the third and fourth transmission rollers, so that the transmission belt II is on a horizontal surface; The feed side of the control roller group II is provided with an overflow control plate II, and the overflow height of the overflow control plate II is flush with the lowest point of the upper control roller II.
The production method of continuous casting and rolling composite metal belt according to claim 49, characterized in that: the vertical roll gap between the upper control roller II and the third transmission roller is set equal to that of the transmission belt II. The sum of the thickness and the thickness of the strip; on the feeding side of the control roller group II, a pressing roller II pressed on the transmission belt II is arranged, and the pressing roller II and the lower control roller II are in a vertical direction The upper distance is set equal to the sum of the thickness of the transmission belt II and the thickness of the strip, and the vertical roll gap between the upper control roller II and the lower control roller II is set equal to that of the transmission belt II. The sum of the thickness, the thickness of the strip and the preset thickness of the metal material layer;

An overflow ring groove II is provided on the pressure roller II, the depth of the overflow ring groove II is set to be greater than or equal to the preset thickness of the metal material layer, and the feeding device II adds liquid metal to the pressure roller Ⅱ and the control roller group Ⅱ.
The production method of continuous casting and rolling composite metal belt according to claim 51, characterized in that: the highest point of the third transmission roller is set higher than the highest point of the fourth transmission roller, and is located at the highest point of the fourth transmission roller. The difference between the height of the highest point of the third transmission roller and the height of the highest point of the fourth transmission roller is equal to the preset thickness of the metal material layer.
The production method of continuous casting and rolling composite metal strip according to claim 48, characterized in that: a feeding roller II is arranged on the feeding side of the control roll group II, and at least one edge is arranged on the feeding roller II. The axial direction is arranged and used to push the liquid metal to the pushing brush II or the pushing paddle II of the control roller group II, so that the liquid metal fills the gap between the upper control roller II and the strip.
The production method of continuous casting and rolling composite metal strip according to claim 48, characterized in that: at least one guide roller II is arranged at intervals on the feeding side of the control roll group II, and the liquid metal is moved along with the guide roller II. The belt is evenly covered in the width direction of the transmission belt II.
The production method of continuous casting and rolling composite metal strip according to claim 48, characterized in that: after the metal material layer is cooled and formed, the metal material layer is finished, using at least one set of finishing roll sets II arranged at intervals Finishing the metal material layer so that the thickness and surface accuracy of the metal material layer reach the set range.
The production method of continuous casting and rolling composite metal strip according to claim 55, characterized in that the finishing temperature is controlled to keep the metal material layer in a temperature range that is convenient for its finishing.
The production method of continuous casting and rolling composite metal strip according to claim 48, characterized in that: the strip is made of but not limited to copper strip, aluminum strip, steel strip, nickel strip, silver strip, gold strip or metal material Strips compounded with non-metallic materials.
The method for producing a continuous casting and rolling composite metal strip according to claim 57, wherein the strip is a mesh foil or the strip is provided with through holes in an array.
The production method of continuous casting and rolling composite metal strip according to claim 48, characterized in that: the metal material used for rolling the metal material layer adopts but is not limited to metal lithium, metal sodium, metal potassium, metal magnesium, Metallic calcium, metallic zinc, metallic aluminum or metallic silver; or the metallic material adopts but is not limited to at least two of metallic lithium, metallic sodium, metallic potassium, metallic magnesium, metallic calcium, metallic zinc, metallic aluminum and metallic silver Compared with the alloy.
The production method of continuous casting and rolling composite metal strip according to any one of claims 48-59, characterized in that: the rolling width of the metal material layer is controlled, and uncovered metal material is formed on both edges of the strip. The blank area of the layer.
The production method of continuous casting-rolling composite metal strip according to claim 60, characterized in that the edge pressing device is used to press on both sides of the strip to prevent liquid metal from flowing into the area pressed by the edge pressing device. Finally, the blank areas are formed on both sides of the strip.
The production method of continuous casting and rolling composite metal belt according to claim 61, characterized in that: in the initial state, no metal material layer is formed on both sides of the belt, and only two sides are respectively arranged above the transmission belt II. Upper crimping seat, and the bottom surface of the upper crimping seat is provided with upper crimping edges for contacting and matching with the upper side edge of the strip; or, respectively setting upper crimping edges on the upper and lower sides of the transmission belt II Seat and lower edge holder, the bottom surface of the upper edge holder is provided with an upper edge for contact and fit with the upper side edge of the strip, and the top surface of the lower edge holder is provided for contact with the lower edge of the strip. The side edges touch the mating lower pressing edge.
The method for producing a continuous casting and rolling composite metal belt according to claim 61, characterized in that: in the initial state, a metal material layer is already formed on one side of the belt, and the two sides are on the upper and lower sides of the belt II. An upper crimping seat and a lower crimping seat are respectively arranged on the sides. The bottom of the upper crimping seat is provided with an upper crimp for contacting and matching with the upper side edge of the strip, and the top surface of the lower crimping seat is provided with The lower side edge of the strip is in contact with the matched lower pressing edge.
The production method of continuous casting and rolling composite metal strip according to claim 63, characterized in that: under the transmission belt II on the feeding side of the control roll group II is provided with a device for preventing the rolled metal material layer from being melted. Cold temperature zone.