Multi-coiled-material same-dimension cold rolling composite rolling mill

Abstract

The invention relates to the technical field of cold rolling mills, in particular to a multi-coiled-material same-dimension cold rolling composite rolling mill which comprises a tension transmission assembly, a transmission assembly and a binding assembly which are sequentially arranged along a coiled material advancing path, and the tension transmission assembly is arranged between an outer-layer coiled material and an inner-layer coiled material and comprises a driving roller and a driven roller which are arranged at intervals. The driving roller is attached to the surface of the outer-layer coiled material, the driven roller is arranged between the outer-layer coiled material and the inner-layer coiled material, the end of the driving roller is coaxially connected with a second gear, the end of the driven roller is coaxially connected with a third gear, the second gear is meshed with the third gear, and a plurality of sets of driving arms are evenly arranged on the periphery of the driven roller in the circumferential direction. And the plurality of groups of driving arms alternately drive the inner-layer coiled material to advance along with the rotation of the driven roller. Through gear engagement of the driving roller and the driven roller, advancing tension of the outer-layer coiled material is converted into rotation driving force of the driven roller, and interlayer sliding caused by speed difference is avoided.

Description

[0001] This application claims priority to the prior application with application date of 2025 / 6 / 4 and application number 2025107363911. Technical Field

[0002] The present invention relates to the technical field of cold rolling mills, in particular to a cold rolling composite mill for multiple coils of the same dimension. Background Art

[0003] In the field of cold rolling composite processing, the rolling process of multi-layer coils is widely used in industries such as aerospace, automobile manufacturing, and electronic materials. Traditional cold rolling equipment generally faces the following technical difficulties when processing multi-coil composites:

[0004] Uneven tension transmission causes the coil to deflect or break; the material difference between the outer and inner coils can easily lead to mismatched driving force. The traditional transmission method relies solely on the friction of the outer coil to drive the inner coil. During startup, the inner coil lags behind due to inertia, which can easily cause a speed difference between the inner and outer coils, leading to wrinkles, tensile fractures, or compound dislocations. Summary of the Invention

[0005] In order to solve the problems in the prior art, the present invention provides a multi-coil cold rolling composite mill with the same dimension. The specific technical solution is as follows:

[0006] A multi-coil same-dimensional cold-rolling composite mill is used for bundling two outer coils and an inner coil spaced between the two outer coils, comprising a tension transmission assembly, a transmission assembly and a bundling assembly sequentially arranged along the coil travel path, wherein the tension transmission assembly is arranged between the outer coil and the inner coil, and comprises an active roller and a passive roller spaced apart, wherein the active roller is in contact with the surface of the outer coil, and the passive roller is arranged between the outer coil and the inner coil, the end of the active roller is coaxially connected to gear two, the end of the passive roller is coaxially connected to gear three, and gear two and gear three are meshed, and a plurality of groups of driving arms are evenly arranged on the outer circumference of the passive roller, and the plurality of groups of driving arms alternately drive the inner coil to travel as the passive roller rotates.

[0007] As a further technical solution of the present invention, the driving arm includes an inner arm body connected to the surface of the driven roller, an outer arm body slidably mounted on the other end of the inner arm body, and two elastic parts connected between the inner arm body and the outer arm body, wherein the contact pressure between the driving arm and the inner layer coil increases as its length decreases.

[0008] As a further technical solution of the present invention, when the driven roller rotates, at least two groups of driving arms are in contact with the inner layer coil.

[0009] As a further technical solution of the present invention, the tension transmission components are provided in two groups, which are symmetrically distributed on both sides of the inner coil. The driving arms located on both sides of the inner coil can cooperate to form an engaging surface facing the inner coil.

[0010] As a further technical solution of the present invention, the gear three includes a ring gear and a plurality of floating tooth groups evenly distributed around the ring gear in the circumferential direction;

[0011] The floating tooth group includes a movable groove opened on the peripheral wall of the gear ring, a floating tooth that can be floated in the movable groove, and an elastic member 1 connected between the movable groove and the floating tooth. The elastic member 1 is pre-compressed and installed in the movable groove to drive the floating tooth to float out. The floating tooth sinks into the movable groove when the transmission resistance between it and gear 2 reaches a threshold, so that relative rotation occurs between gear 2 and gear 3.

[0012] As a further technical solution of the present invention, the threshold force for the floating teeth to sink into the movable groove is less than the maximum tension at which the outer coil breaks.

[0013] As a further technical solution of the present invention, the transmission assembly is arranged between the two outer layer coils, and is used to make the linear speeds of the two outer layer coils the same. It includes two transmission rollers, two sprockets and a chain belt wrapped around and connected between the two sprockets, wherein the two transmission rollers correspond to the two outer layer coils respectively, and the two sprockets are respectively arranged at the ends of the two transmission rollers.

[0014] As a further technical solution of the present invention, the bundling assembly is arranged at the junction of the outer layer coil and the inner layer coil, and is used to bundle the outer layer coil and the inner layer coil, including two cold rolling rollers arranged at intervals and two sets of mutually meshing gears, and the two sets of gears correspond to the two cold rolling rollers respectively, so that the two cold rolling rollers rotate in opposite directions at the same speed.

[0015] The beneficial effects of the present invention are as follows:

[0016] (1) The innovative design of the tension transmission component converts the travel tension of the outer layer of the coil into the rotational driving force of the driven roller through the gear meshing of the active roller and the driven roller, thus avoiding inter-layer slippage caused by speed difference.

[0017] (2) The driving arm on the periphery of the driven roller adopts a telescopic structure of "inner arm body + outer arm body + elastic part 2". When it contacts the inner layer of the coil, the elastic part 2 is compressed as it rotates, so that the contact pressure increases as the arm length decreases, avoiding slipping and ensuring the stability of the driving force. At least two sets of driving arms contact the inner layer of the coil at the same time to ensure the continuity of the driving force and solve the problem of the difference in acceleration of the inner and outer layers of the coil during startup.

[0018] At the same time, a group of tension transmission components are set on each side of the inner coil, and the driving arms cooperate to form an engaging surface facing the inner coil, increasing the contact pressure through bidirectional extrusion to ensure the stability of the linear movement of the inner coil.

[0019] (3) Overload protection mechanism: The floating tooth group of gear three consists of a movable groove, floating teeth and elastic member one; under normal conditions, elastic member one drives the floating teeth to engage with gear two to transmit power; when the resistance of the inner coil is too large, the floating teeth sink into the movable groove, and gear two and gear three rotate relative to each other to prevent the outer coil from breaking due to overload; the threshold force is less than the breaking tension of the outer coil, realizing adaptive unloading and protecting the coil safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It shows the overall structure diagram of a multi-coil same-dimension cold rolling composite mill;

[0021] Figure 2 Shows a schematic structural diagram of the tying assembly;

[0022] Figure 3 shows a schematic structural diagram of the tension transmission assembly;

[0023] Figure 4 shows a schematic structural diagram of the driving arm;

[0024] Figure 5 A schematic diagram of the coordination structure between the driving arm and the inner coil is shown;

[0025] Figure 6 shows a schematic structural diagram of gear three;

[0026] Figure 7 A schematic structural diagram of the transmission assembly is shown.

[0027] Description of the drawings: 100, outer layer coil; 200, inner layer coil; 300, binding assembly; 310, cold rolling roller; 320, gear one; 400, tension transmission assembly; 410, driving roller; 420, driven roller; 430, gear two; 440, gear three; 441, gear ring; 442, movable groove; 443, floating tooth; 444, elastic part one; 450, driving arm; 451, inner arm body; 452, outer arm body; 453, elastic part two; 500, transmission assembly; 510, transmission roller; 520, sprocket; 530, chain belt. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0029] Figure 1It shows the overall structure diagram of a multi-coil same-dimension cold rolling composite mill; Figure 1 In the present invention, the multi-coil same-dimensional cold-rolling composite rolling mill is used for binding two outer layer coils 100 and an inner layer coil 200 spaced apart between the two outer layer coils 100; it includes a tension transmission component 400, a transmission component 500 and a binding component 300 sequentially arranged along the coil travel path, wherein the tension transmission component 400 is arranged between the outer layer coil 100 and the inner layer coil 200, and is used to transmit the tension of the outer layer coil 100 to the inner layer coil 200, so as to convert the tension of the outer layer coil 100 into the driving force of the inner layer coil 200; the binding component 300 is arranged at the junction of the outer layer coil 100 and the inner layer coil 200, and is used to bind the outer layer coil 100 and the inner layer coil 200; the transmission component 500 is arranged between the two outer layer coils 100, and is used to make the linear speeds of the two outer layer coils 100 the same, so that the two have the same frequency.

[0030] It should be noted that, in this embodiment, the yield strength of the outer coil 100 is greater than the yield strength of the inner coil 200; that is, the driving force required for the outer coil 100 is greater than the driving force required for the inner coil 200, making it easier for the inner coil 200 to be entrained and transmitted by the outer coil 100.

[0031] Figure 2 shows a schematic structural diagram of the binding assembly 300; Figure 2 In the figure, the bonding assembly 300 includes two cold rolling rollers 310 arranged at intervals and two sets of gears 1 320 that mesh with each other, and the two sets of gears 1 320 correspond to the two cold rolling rollers 310 respectively, so that the two cold rolling rollers 310 rotate at the same speed in opposite directions; the two cold rolling rollers 310 are used to press the multi-layer coils, and the gear 1 320 is used to drive the two cold rolling rollers 310, that is, the two sets of gears 1 320 are coaxially arranged at the ends of the two cold rolling rollers 310, and rotate in opposite directions after meshing.

[0032] Figure 3 shows a schematic structural diagram of the tension transmission assembly 400; Figure 3In the embodiment, the tension transmission assembly 400 includes an active roller 410 and a driven roller 420 arranged at intervals, wherein the active roller 410 is in contact with the surface of the outer coil 100, and the driven roller 420 is arranged between the outer coil 100 and the inner coil 200. The end of the active roller 410 is coaxially connected to a gear 2 430, and the end of the driven roller 420 is coaxially connected to a gear 3 440, and the gear 2 430 and the gear 3 440 are meshed; through the force transmission between the gear 3 440 and the gear 2 430, the tension of the outer coil 100 can be converted into the tension of the driven roller 420. The rotational force of the roller 420; a plurality of groups of driving arms 450 are evenly arranged on the outer circumference of the driven roller 420, and the plurality of driving arms 450 alternately drive the inner layer coil 200 to advance as the driven roller 420 rotates; through the arrangement of the plurality of driving arms 450, the tension of the outer layer coil 100 can be further converted into a driving force that directly contacts the inner layer coil 200, thereby driving the inner layer coil 200, accelerating the starting speed of the inner layer coil 200, and reducing the acceleration difference between the inner layer coil 200 and the outer layer coil 100 at the time of starting.

[0033] Figure 4 shows a schematic structural diagram of the driving arm 450; Figure 4 In the embodiment, the driving arm 450 includes an inner arm body 451 connected to the surface of the driven roller 420, an outer arm body 452 slidably mounted on the other end of the inner arm body 451, and an elastic member 453 connected between the inner arm body 451 and the outer arm body 452, wherein the contact pressure between the driving arm 450 and the inner layer coil 200 increases as the length thereof decreases; during rotation, after the driving arm 450 contacts the inner layer coil 200, the length of the driving arm 450 is at its maximum value, and as the driven roller 420 rotates, relative sliding occurs between the outer arm body 452 and the inner arm body 451, and the overall length of the driving arm 450 gradually decreases, while the elastic member 453 is squeezed. The outer arm 452 is gradually deformed under pressure, and the deformation force of the elastic member 453 is used to reversely drive the outer arm 452 to squeeze the surface of the inner coil 200, so that the contact pressure between the outer arm 452 and the inner coil 200 gradually increases until the driving arm 450 reaches the minimum value. With this structure, the driving force on the inner coil 200 can be ensured, and relative sliding between the driving arm 450 and the inner coil 200 can be avoided; when the driven roller 420 rotates, at least two groups of driving arms 450 are in contact with the inner coil 200; no matter to which angle the driven roller 420 rotates, at least two groups of driving arms 450 are in contact with the inner coil 200 at the same time, ensuring a continuous supply of driving force.

[0034] Figure 5 A schematic diagram of the cooperation structure of the driving arm 450 and the inner layer coil 200 is shown; Figure 5In the figure, two groups of tension transmission components 400 are provided, which are symmetrically distributed on both sides of the inner layer coil 200. The driving arms 450 located on both sides of the inner layer coil 200 can cooperate to form an engaging surface facing the inner layer coil 200; using this structural setting, the direct contact pressure between the driving arm 450 and the inner layer coil 200 can be ensured, ensuring that the inner layer coil 200 can move linearly with the rotation of the driving arm 450.

[0035] Figure 6 shows a schematic structural diagram of gear three 440; Figure 6 In the figure, gear three 440 includes a gear ring 441 and several groups of floating tooth groups evenly distributed circumferentially around the gear ring 441; the floating tooth group includes a movable groove 442 opened on the peripheral wall of the gear ring 441, a floating tooth 443 floatably arranged in the movable groove 442, and an elastic member 444 connected between the movable groove 442 and the floating tooth 443. The elastic member 444 is pre-compressed and installed in the movable groove 442 to drive the floating tooth 443 to float out. The floating tooth 443 sinks into the movable groove 442 when the transmission resistance between it and gear two 430 reaches a threshold value, so that relative rotation occurs between gear two 430 and gear three 440; the floating tooth group is used to maintain force transmission between gear two 430 and gear three 440 under normal conditions, and can cause gear two 430 and gear three 440 to "slip" when the transmission resistance is too large to avoid overload.

[0036] It should be noted that since the binding component 300 applies a pulling force to the outer layer coil 100 to drive it to move forward, and the inner layer coil 200 applies a resistance in the opposite direction of the pulling force to the outer layer coil 100 through the transmission of the tension transmission component 400, that is, the outer layer coil 100 needs to overcome this resistance to achieve movement. In order to avoid the outer layer coil 100 from being pulled and broken, the floating tooth group is designed to realize an overload self-unloading force mechanism to protect the outer layer coil 100 from breaking; that is, the threshold force of the floating tooth 443 sinking into the movable groove 442 is less than the maximum tension that causes the outer layer coil 100 to break.

[0037] Figure 7 shows a schematic structural diagram of the transmission assembly 500; Figure 7 In the figure, the transmission assembly 500 includes two transmission rollers 510, two sprockets 520 and a chain belt 530 wound and connected between the two sprockets 520, wherein the two transmission rollers 510 correspond to two outer layer coils 100 respectively, and the two sprockets 520 are respectively arranged at the ends of the two transmission rollers 510; the transmission rollers 510 are in contact with the outer layer coil 100 and can rotate when the outer layer coil 100 moves, so as to utilize the synchronous rotation of the two transmission rollers 510 to limit the two outer layer coils 100 to move at the same frequency linear speed.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A multi-coil cold rolling composite mill with the same dimensions, used for bonding two outer layer coils (100) and an inner layer coil (200) spaced between the two outer layer coils (100), comprising a tension transmission assembly (400), a transmission assembly (500) and a bonding assembly (300) sequentially arranged along a coil travel path, characterized in that: The tension transmission assembly (400) is arranged between the outer layer coil (100) and the inner layer coil (200), and includes an active roller (410) and a driven roller (420) arranged at intervals, wherein the active roller (410) is in contact with the surface of the outer layer coil (100), and the driven roller (420) is arranged between the outer layer coil (100) and the inner layer coil (200). The end of the active roller (410) is coaxially connected to a gear 2 (430), and the end of the driven roller (420) is coaxially connected to a gear 3 (440). The gear 2 (430) and the gear 3 (440) are meshed. The outer circumference of the driven roller (420) is evenly provided with a plurality of groups of driving arms (450). The plurality of groups of driving arms (450) alternately drive the inner layer coil (200) to advance as the driven roller (420) rotates.

2. The multi-coil same-dimension cold rolling composite mill according to claim 1, characterized in that: The driving arm (450) includes an inner arm body (451) connected to the surface of the driven roller (420), an outer arm body (452) slidably mounted on the other end of the inner arm body (451), and an elastic member (453) connected between the inner arm body (451) and the outer arm body (452), wherein the contact pressure between the driving arm (450) and the inner layer coil (200) increases as the length thereof decreases.

3. The multi-coil same-dimension cold rolling composite mill according to claim 2, characterized in that: When the driven roller (420) rotates, at least two groups of driving arms (450) contact the inner layer coil (200).

4. The multi-coil same-dimension cold rolling composite mill according to claim 3, characterized in that: The tension transmission assembly (400) is provided with two groups, which are symmetrically distributed on both sides of the inner coil (200). The driving arms (450) located on both sides of the inner coil (200) can cooperate to form an engaging surface facing the inner coil (200).

5. The multi-coil same-dimension cold rolling composite mill according to claim 3, characterized in that: The gear three (440) includes a gear ring (441) and a plurality of floating gear groups evenly distributed circumferentially around the gear ring (441); The floating tooth group includes a movable groove (442) provided on the peripheral wall of the gear ring (441), a floating tooth (443) that can be floated in the movable groove (442), and an elastic member (444) connected between the movable groove (442) and the floating tooth (443). The elastic member (444) is pre-compressed and installed in the movable groove (442) to drive the floating tooth (443) to float out. The floating tooth (443) sinks into the movable groove (442) when the transmission resistance between it and gear 2 (430) reaches a threshold value, so that relative rotation occurs between gear 2 (430) and gear 3 (440).

6. The multi-coil same-dimension cold rolling composite mill according to claim 5, characterized in that: The threshold force at which the floating teeth (443) sink into the movable groove (442) is less than the maximum tension at which the outer layer coil (100) breaks.

7. The multi-coil same-dimension cold rolling composite mill according to claim 1, characterized in that: The transmission assembly (500) is arranged between two outer layer coils (100) and is used to make the two outer layer coils (100) have the same linear speed. It includes two transmission rollers (510), two sprockets (520) and a chain belt (530) wound and connected between the two sprockets (520), wherein the two transmission rollers (510) respectively correspond to the two outer layer coils (100), and the two sprockets (520) are respectively arranged at the ends of the two transmission rollers (510).

8. The multi-coil same-dimension cold rolling composite mill according to claim 1, characterized in that: The binding assembly (300) is arranged at the junction of the outer layer coil (100) and the inner layer coil (200) and is used to bind the outer layer coil (100) and the inner layer coil (200). It includes two cold rolling rollers (310) arranged at intervals and two sets of mutually meshing gears (320), and the two sets of gears (320) correspond to the two cold rolling rollers (310) respectively, so that the two cold rolling rollers (310) rotate at the same speed in opposite directions.

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