An ironing device for rolling aluminum foil

Abstract

An ironing device for rolling aluminum foil includes a reel, a counterweight slide column, an ironing roller and a lifting roller group; the reel rotates horizontally and is used to roll up the aluminum foil; the counterweight slide column cooperates with a fixed sliding sleeve and can slide up and down in the vertical direction; the ironing roller is horizontally connected to the lower end of the counterweight slide column and is used to press down the aluminum foil rolled on the reel; the lifting roller group includes a guide roller, a moving roller and a roller frame, and a plurality of static rollers are installed on the roller frame, and the aluminum foil is horizontally or vertically wound between the guide roller, the static roller and the moving roller; a lifting mechanism is installed on the roller frame and the moving roller, and the lifting speed of the roller frame and the moving roller is twice that of the moving roller, so that the aluminum foil is rolled on the reel in a horizontal state under constant tension and forms a tangent point at the position in contact with the ironing roller. The ironing device can ensure that the distance from the tangent point to the rolling mill does not change during the rolling process, which fundamentally solves the tension fluctuation problem of the aluminum foil caused by the distance change.

Description

Technical Field

[0001] The invention relates to the field of aluminum foil rolling equipment, in particular to an ironing device for aluminum foil rolling. Background Art

[0002] The production of pharmaceutical foil and aluminum foil for soft-pack batteries requires a complete set of aluminum foil rolling equipment. The existing complete sets of aluminum foil rolling equipment are equipped with a coiler, guide rollers and ironing devices. Figure 1 The ironing device is arranged on the left side of the coiler, and the angle roller 9 is arranged on the right side of the coiler. The rolled aluminum foil 6 is guided by the angle roller 9 and then wound on the reel 1 of the coiler, and the foil becomes larger and larger as it is rolled. The ironing device is mainly composed of a rocker arm, an ironing roller 2 and three oil cylinders. The ironing roller 2 has three functions: first, it applies a constant pressure to the aluminum coil to make the aluminum coil flat and have a relatively constant winding tension; second, as the diameter of the aluminum coil increases, it is necessary to ensure that the contact point between the ironing roller and the aluminum coil is always near the tangent point to squeeze out the air and eliminate the air gap; third, it presses the belt head at the end of winding to prevent the belt from loosening. However, the shortcomings of the existing ironing device are also obvious, which are mainly reflected in the following points:

[0003] 1. The existing ironing roller device adopts a pressure closed-loop control mode, which not only requires precise and expensive sensors and complex control systems, but also requires mathematical modeling to determine the pressure parameter table. Personnel without in-depth training cannot operate it correctly.

[0004] 2. The pressure N applied by the ironing roller to the aluminum coil is provided by the oil cylinder. Due to the limitation of the overall structure, the direction of the pressure N cannot always point to the center of the roll during the winding process, resulting in the generation of a tangential component force N t and radial force N r , radial force N r The change of will affect the winding tension of the aluminum foil after winding, and the tangential force N t The change will affect the rolling tension of the aluminum foil before winding.

[0005] 3. The speed of the rolling mill is constant, while the speed of the coiler decreases as the diameter of the coil increases. The speed of the coiler follows a strict mathematical relationship, resulting in a small speed difference between the coiler and the rolling mill, thereby forming the tension required for rolling. During the coiling process, the distance AB from the tangent point to the guide roller of the aluminum foil is constantly decreasing. Although the change in the distance AB per unit time is not large, the small distance change is enough to cause tension fluctuations. For the rolling of strips, the thinning rolling of the rolling mill plays a key role. For the rolling of foil, the key factor of thinning rolling lies in tension. It can be said that the foil is thinned by tension. It is crucial to keep the tension stable during the thinning process. The fluctuation of tension will not only seriously affect the rolling quality, but also easily cause the aluminum foil to break.

[0006] In summary, it is necessary to improve the existing ironing device in terms of principle and structure. Summary of the invention

[0007] In order to overcome the shortcomings of the background technology, the present invention discloses an ironing device for aluminum foil rolling, the purpose of which is:

[0008] 1. Simplify the structure and control method of the ironing device to make it easy to operate;

[0009] 2. Eliminate the adverse effects of oblique pressure on winding tension and rolling tension;

[0010] 3. Solve the problem of tension fluctuation caused by distance changes.

[0011] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0012] An ironing device for rolling aluminum foil, comprising:

[0013] Roller, rotating horizontally, for rolling up aluminum foil;

[0014] The counterweight slide column cooperates with the fixed slide sleeve and can slide up and down in the vertical direction;

[0015] The ironing roller is horizontally connected to the lower end of the counterweight slide column and is used to press the aluminum foil rolled on the reel downward; when viewed from the end face direction of the reel and the ironing roller, the axis of the reel and the ironing roller is located on the extension line of the axis of the counterweight slide column;

[0016] The lifting roller group includes a guide roller, a moving roller and a roller frame, a plurality of static rollers are installed on the roller frame, and the aluminum foil is horizontally or vertically wound between the guide roller, the static roller and the moving roller; a lifting mechanism is respectively installed on the roller frame and the moving roller, and the lifting speed of the roller frame and the moving roller is twice that of the moving roller, so that the aluminum foil is rolled on the reel in a horizontal state under constant tension and forms a tangent point at the position where it contacts the ironing roller.

[0017] To further improve the technical solution, when the guide roller is located above the roller frame, the lifting speed of the roller frame is twice the lifting speed of the movable roller; when the guide roller is located below the roller frame, the lifting speed of the movable roller is twice the lifting speed of the roller frame.

[0018] To further improve the technical solution, the lifting mechanism installed on the roller frame is a first screw nut lifting motion pair, and the lifting mechanism installed on the movable roller is a second screw nut lifting motion pair.

[0019] To further improve the technical solution, the first screw nut lifting motion pair is driven by a servo motor, and a gear transmission pair with a tooth number of 2:1 is connected between the first screw nut lifting motion pair and the second screw nut lifting motion pair.

[0020] To further improve the technical solution, the first screw nut lifting motion pair and the second screw nut lifting motion pair are driven by servo motors respectively, and the speed ratio of the two servo motors is 2:1.

[0021] To further improve the technical solution, the lifting mechanism installed on the movable roller is a constant force cylinder, and the force applied by the constant force cylinder to the movable roller is twice the tension that the aluminum foil should be subjected to.

[0022] To further improve the technical solution, a counterweight block is installed on the top of the counterweight sliding column.

[0023] To further improve the technical solution, the lifting roller group also includes a vertically arranged guide rail slider motion pair, and the movable roller and the roller frame are respectively connected to the guide rail slider motion pair.

[0024] After implementing the above technical solution, compared with the background technology, the beneficial effects produced by the present invention are:

[0025] 1. The structure and control method of the ironing device are simplified, making the ironing device easy to operate;

[0026] 2. It can ensure that the pressure exerted by the ironing roller on the aluminum coil is constant and not affected by external factors;

[0027] 3. It can ensure that the direction in which the ironing roller applies pressure to the aluminum coil always points to the center of the roll, and no force component will be generated, thereby eliminating the adverse effects of the force component on the winding tension and rolling tension;

[0028] 4. During the coiling process, the aluminum foil is always kept in a taut state with constant tension to ensure that the distance from the cutting point to the rolling mill does not change, and the length of the aluminum foil does not change, which fundamentally solves the problem of tension fluctuation caused by distance changes in the aluminum foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Attached Figure 1 Shown is a schematic structural diagram of an existing ironing device.

[0030] Attached Figure 2 What is shown is a schematic diagram of the structure of the ironing device in Example 1.

[0031] Attached Figure 3 The attached Figure 2 Side view of.

[0032] Attached Figure 4 Shown is a schematic structural diagram of the ironing device before rolling.

[0033] Attached Figure 5 Shown is a schematic structural diagram of the ironing device after winding.

[0034] Attached Figure 6What is shown is a schematic structural diagram of the ironing device in Example 2.

[0035] Attached Figure 7 What is shown is a schematic structural diagram of the ironing device in Example 3.

[0036] Attached Figure 8 What is shown is a schematic diagram of the structure of the ironing device in Example 4.

[0037] In the attached figure: 1. reel; 2. ironing roller; 3. counterweight slide column; 4. sleeve; 5. lifting roller group; 51. roller frame; 52. static roller; 53. dynamic roller; 54. guide roller; 55. first screw nut lifting motion pair; 56. second screw nut lifting motion pair; 57. servo motor; 58. gear transmission pair; 59. guide rail slider motion pair; 6. aluminum foil; 7. constant force cylinder; 8. counterweight block; 9. angle roller. DETAILED DESCRIPTION

[0038] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. It should be noted that in the description of the present invention, the terms "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Embodiment 1:

[0039] See attached Figure 2 An ironing device for rolling aluminum foil mainly comprises a reel 1, a counterweight slide column 3, an ironing roller 2 and a lifting roller group 5, and its structure and function are described in detail below.

[0040] The reel 1 is the main component of the coiler, and the reel 1 can rotate horizontally to roll the rolled aluminum foil into a coil. The aluminum foil rolling production line adopts the traditional mode of horizontal in and horizontal out, and the coiler is set at the end of the aluminum foil rolling production line.

[0041] See attached Figure 3The counterweight slide column 3 is a pair and is arranged above the reel 1. The counterweight slide column 3 cooperates with the fixed sliding sleeve 4 and can slide up and down in the vertical direction. A counterweight block is installed on the top of the counterweight slide column 3.

[0042] The ironing roller 2 is horizontally connected to the lower end of a pair of counterweight slides 3. It relies on the weight of the counterweight slides 3, the counterweight block and its own weight to press down the aluminum foil rolled on the reel 1 and exert pressure on it. In other words, the pressure exerted by the ironing roller 2 on the aluminum coil is the weight of the counterweight slide 3, the counterweight block and the ironing roller 2. Compared with the force applied by the oil cylinder, the pressure exerted on the aluminum coil by its own weight is constant and is not affected by factors such as oil pressure. In addition, by increasing or decreasing the number of counterweight blocks, the pressure exerted by the ironing roller 2 on the aluminum coil can be accurately adjusted to ensure that the aluminum coil has a relatively constant winding tension.

[0043] Observing from the end face direction of the reel 1 and the ironing roller 2, the axis of the reel 1 and the ironing roller 2 is located on the extension line of the axis of the counterweight slide column 3. In other words, the direction in which the ironing roller 2 applies pressure to the aluminum coil is always toward the center of the reel 1, and no component force is generated, thereby eliminating the adverse effects of the component force on the winding tension and rolling tension.

[0044] The lifting roller group 5 includes a guide roller 54, a moving roller 53 and a roller frame 51. Three static rollers 52 are installed on the roller frame 51. The aluminum foil 6 is wound horizontally or vertically between the guide roller 54, the static roller 52 and the moving roller 53. In order to ensure that the moving roller 53 and the roller frame 51 can be lifted and lowered vertically, a vertical guide rail slider kinematic pair 59 is provided on one side of the moving roller 53 and the roller frame 51. The moving roller 53 and the roller frame 51 are connected to the guide rail slider kinematic pair 59 respectively. It is worth noting that the static rollers 52 can also be two or four, but not less than two.

[0045] A lifting mechanism is respectively installed on the roller frame 51 and the movable roller 53. In the present embodiment, the lifting mechanism installed on the roller frame 51 is a first screw nut lifting motion pair 55, and the lifting mechanism installed on the movable roller 53 is a second screw nut lifting motion pair 56. The first screw nut lifting motion pair 55 is driven by a servo motor 57, and a gear transmission pair 58 with a tooth number of 2:1 is connected between the first screw nut lifting motion pair 55 and the second screw nut lifting motion pair 56.

[0046] In this embodiment, the guide roller 54 is located above the roller frame 51, and the distance between the roller frame 51 and the guide roller 54 is L. The number of teeth of the gear installed on the second screw nut lifting motion pair 56 is twice the number of teeth of the gear installed on the first screw nut lifting motion pair 55, and the rotation direction of the first screw is opposite to that of the second screw, and the pitch is the same. When the servo motor 57 is working, the roller frame 51 and the movable roller 53 rise at the same time, and the rising speed of the roller frame 51 is twice the rising speed of the movable roller 53. It is worth noting that the lifting mechanism can also be replaced by a servo cylinder. The servo cylinder connected to the roller frame 51 has a lifting speed twice that of the servo cylinder connected to the movable roller 53.

[0047] See attached Figure 2 , Attachment Figure 4 and attached Figure 5 . When working, the reel 1 rotates and the diameter of the aluminum coil begins to increase. Although the angular velocity ω of the reel 1 decreases as the aluminum coil increases, the angular velocity ω of the reel 1 is pre-set according to a strict mathematical formula. The reel 1 reels as many meters of aluminum foil as the rolling mill rolls out. The radius R of the aluminum coil at any time can be obtained by the formula R=V / ω, where V is the rolling speed of the aluminum foil, which is generally constant. In the prior art, when the radius R of the aluminum coil is known, the servo motor 57 is used to raise the roller frame 51 and the moving roller 53, so that the aluminum foil 6 is always rolled on the reel 1 in a horizontal state, and a tangent point is formed at the position where it contacts the ironing roller 2. This is easy to achieve. In this way, it can be ensured that the ironing roller 2 is always pressed on the tangent point, squeezing out the air between the aluminum foil 6 and the coil, thereby achieving the purpose of eliminating the air gap.

[0048] The distance L between the roller frame 51 and the guide roller 54 will decrease due to the horizontal rise of the aluminum foil 6. If no measures are taken at this time, the aluminum foil 6 will lose tension due to relaxation. Since the rising speed of the roller frame 51 is twice the rising speed of the movable roller 53, the rising distance of the movable roller 53 per unit time is only 1 / 2 of the rising distance of the roller frame 51, so the distance between the movable roller 53 and the roller frame 51 will increase. With the roller frame 51 as a stationary reference, the movable roller 53 moves downward. In addition, since the movable roller 53 is in the movable pulley state, each time the movable roller 53 rises and falls by one unit of length, the aluminum foil will move two units of length. Therefore, the relative movement of the movable roller 53 and the roller frame 51 compensates for the relaxation of the aluminum foil caused by the rise, so that the aluminum foil is always in a taut state with constant tension. At this time, the distance from the tangent point to the rolling mill will not change, and the aluminum foil will not change in length.

[0049] For the rolling of foil, it is very important to maintain stable tension. This ironing device always keeps the aluminum foil in a taut state with constant tension during the coiling process, ensuring that the distance from the cutting point to the rolling mill does not change, and the length of the aluminum foil does not change, fundamentally solving the problem of tension fluctuation caused by distance changes in the aluminum foil. Embodiment 2:

[0050] See attached Figure 6 . The difference between this embodiment and the first embodiment is that the first screw nut lifting motion pair 55 and the second screw nut lifting motion pair 56 are driven by servo motors 57 respectively. Since the first screw and the second screw have the same rotation direction and pitch, the rotation speed of the servo motor connected to the first screw nut lifting motion pair 55 is twice that of the other servo motor, so the lifting speed of the roller frame 51 is also twice that of the moving roller 53. Obviously, this dual servo motor connection structure can also achieve the same beneficial effects as the first embodiment. Embodiment 3:

[0051] See attached Figure 7 The difference between this embodiment and the first embodiment is that the guide roller 54 is located below the roller frame 51, the number of teeth of the gear mounted on the first screw nut lifting motion pair 55 is twice the number of teeth of the gear mounted on the second screw nut lifting motion pair 56, the rotation direction of the first screw is opposite to the rotation direction of the second screw, and the pitch is the same. When the servo motor 57 is working, the roller frame 51 and the movable roller 53 rise at the same time, and the rising speed of the movable roller 53 is twice the rising speed of the roller frame 51.

[0052] Since the guide roller 54 is located below the roller frame 51, the distance L between the roller frame 51 and the guide roller 54 will increase due to the horizontal rise of the aluminum foil 6 during operation. If no measures are taken at this time, the tension on the aluminum foil 6 will increase suddenly. However, since the rising speed of the movable roller 53 is twice that of the roller frame 51, the distance between the movable roller 53 and the roller frame 51 will decrease during operation, compensating for the tension of the aluminum foil 6 caused by the rise, so that the aluminum foil 6 is always in a tensioned state with constant tension. Embodiment 4:

[0053] See attached Figure 8 The present embodiment is different from the embodiment 3 in that the lifting mechanism installed on the movable roller 53 is a constant force cylinder 7 , and the force applied by the constant force cylinder 7 to the movable roller 53 is twice the tension to which the aluminum foil 6 should be subjected.

[0054] The constant force oil cylinder 7 is an oil cylinder that can generate constant pulling force or thrust, and the pulling force or thrust is not affected by the telescopic length. When the aluminum foil reaches the ideal tension (or set tension) and the tension can be kept constant, the downward pulling force applied by the constant force oil cylinder 7 to the movable roller 53 is twice the ideal tension, and the telescopic length of the constant force oil cylinder 7 is unchanged. When the distance L between the roller frame 51 and the guide roller 54 increases due to the horizontal rise of the aluminum foil 6, the constant force oil cylinder 7 will also be extended accordingly, so that the rising speed of the movable roller 53 is twice the rising speed of the roller frame 51, ensuring that the aluminum foil 6 is always in a taut state with constant tension.

[0055] Due to various reasons, the tension on the aluminum foil is not actually constant. When the tension on the aluminum foil exceeds the ideal value, the constant force cylinder will reduce the tension of the aluminum foil by appropriate extension, so that the tension of the aluminum foil returns to the ideal value; when the tension on the aluminum foil is lower than the ideal value, the constant force cylinder will increase the tension of the aluminum foil by appropriate retraction, so that the tension of the aluminum foil returns to the ideal value.

[0056] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An ironing device for aluminum foil rolling, characterized in that: include: Roller, rotating horizontally, for rolling up aluminum foil; The counterweight slide column cooperates with the fixed slide sleeve and can slide up and down in the vertical direction; The ironing roller is horizontally connected to the lower end of the counterweight slide column and is used to press the aluminum foil rolled on the reel downward; when viewed from the end face direction of the reel and the ironing roller, the axis of the reel and the ironing roller is located on the extension line of the axis of the counterweight slide column; The lifting roller group includes a guide roller, a moving roller and a roller frame, a plurality of static rollers are installed on the roller frame, and the aluminum foil is wound horizontally or vertically between the guide roller, the static roller and the moving roller; a lifting mechanism is installed on the roller frame and the moving roller respectively, and the lifting speed of the roller frame and the moving roller is twice that of the moving roller, so that the aluminum foil is wound on the reel in a horizontal state under constant tension and forms a tangent point at the position where it contacts the ironing roller.

2. The ironing device for rolling aluminum foil according to claim 1, characterized in that: When the guide roller is located above the roller frame, the lifting speed of the roller frame is twice the lifting speed of the movable roller; when the guide roller is located below the roller frame, the lifting speed of the movable roller is twice the lifting speed of the roller frame.

3. An aluminum foil rolling ironing device as claimed in claim 1 or 2, characterized in that: The lifting mechanism installed on the roller frame is the first screw nut lifting motion pair, and the lifting mechanism installed on the movable roller is the second screw nut lifting motion pair.

4. The ironing device for rolling aluminum foil according to claim 3, characterized in that: The first screw nut lifting motion pair is driven by a servo motor, and a gear transmission pair with a tooth number of 2:1 is connected between the first screw nut lifting motion pair and the second screw nut lifting motion pair.

5. The ironing device for rolling aluminum foil according to claim 3, characterized in that: The first screw nut lifting motion pair and the second screw nut lifting motion pair are driven by servo motors respectively, and the speed ratio of the two servo motors is 2:

1.

6. The ironing device for rolling aluminum foil according to claim 1, characterized in that: The lifting mechanism installed on the moving roller is a constant force cylinder, and the force applied by the constant force cylinder to the moving roller is twice the tension that the aluminum foil should be subjected to.

7. The ironing device for rolling aluminum foil according to claim 1, characterized in that: A counterweight block is installed on the top of the counterweight sliding column.

8. The ironing device for aluminum foil rolling according to claim 1, characterized in that: The lifting roller group also includes a vertically arranged guide rail slider motion pair, and the movable roller and the roller frame are respectively connected to the guide rail slider motion pair.

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