Film fold removing device and material receiving machine

Abstract

The invention discloses a film fold removing device and a material collecting machine, a support and a spindle-shaped shaft, the spindle-shaped shaft is arranged on the support in the first direction, and the spindle-shaped shaft can rotate relative to the support along the axis of the spindle-shaped shaft; wherein the area of the radial section of the spindle-shaped shaft is gradually reduced from the middle to the two ends. According to the thin film fold removing device, the fusiform shaft is adopted, the structural characteristic that the center of the fusiform shaft is thick and the two ends of the fusiform shaft are gradually thinned is adopted, in the collecting process of lithium battery copper foil, the characteristics of a thin film material can be better adapted, it is ensured that the material can be evenly distributed in the winding process, folds are reduced, and the yield of the lithium battery copper foil is improved. And the material receiving efficiency and quality can be improved. When the spindle-shaped shaft rotates along the axis in cooperation with the spindle-shaped shaft, a film to be collected evenly extends from the center of the spindle-shaped shaft to the two ends of the spindle-shaped shaft when passing through the surface of the outer side of the spindle-shaped shaft, and therefore wrinkles are removed.

Description

Technical Field

[0001] The present application discloses the technical field of film material processing, and in particular, to a film de-wrinkling device and a material receiving machine. Background Art

[0002] As a high-efficiency, high-energy-density secondary battery, lithium-ion batteries play a vital role in modern electronic devices, electric vehicles, and energy storage systems. As one of the key strategic materials for lithium batteries, the quality of lithium battery copper foil, the negative electrode current collector material of lithium batteries, directly affects the overall performance and life of the battery. In the production process of copper foil, copper sulfate liquid is electrolyzed into raw foil through a foil machine via direct current. This process requires the copper foil to have good uniformity and density.

[0003] However, in the production process of copper foil, especially when the copper foil negative electrode material is being wound, the problem of wrinkles in the copper foil material is often encountered. Such wrinkles not only affect the quality of the product, but also require the operation of the production equipment to be stopped and the wrinkles to be manually eliminated. This affects the utilization rate of the equipment and increases the labor intensity of the operators. The existing winding mechanism lacks effective anti-wrinkle measures in design, resulting in the copper foil film material being unable to maintain a continuous flat state during the winding process, further exacerbating the above problem.

[0004] In view of this, in order to ensure the product quality of lithium battery copper foil and improve the continuous and stable operation capability of foil production equipment, it is necessary to develop a device that can effectively prevent the wrinkling of copper foil materials during the winding process, improve the utilization rate of the equipment, and reduce the workload of operators. This is a technical problem that needs to be solved urgently in the current lithium battery copper foil production process. Summary of the invention

[0005] A technical problem to be solved by the present application is to make the film material flat and wrinkle-free during the winding process.

[0006] In order to solve the above technical problems, the embodiment disclosed in the present application provides a film de-folding device, comprising: a bracket and a spindle-shaped shaft, wherein the spindle-shaped shaft is arranged on the bracket along a first direction, and the spindle-shaped shaft can rotate relative to the bracket along its axis;

[0007] The area of ​​the radial cross section of the spindle-shaped shaft gradually decreases from the middle to both ends.

[0008] In some embodiments, the spindle-shaped shaft includes a functional layer disposed on a peripheral side of the spindle-shaped shaft.

[0009] In some embodiments, the functional layer is one of soft rubber, polyurethane, silicone or fabric coating.

[0010] In some embodiments, wind knives are also included, at least two of which are disposed on the bracket and located at the middle section of the spindle-shaped shaft, and the two wind knives are disposed back to back so that the air outlets of the wind knives face the ends of the spindle-shaped shaft.

[0011] In some embodiments, it also includes a shaping tube and an air inlet pipe, one end of the shaping tube extends to the middle section of the spindle-shaped shaft and is connected to the air inlet of the wind knife, one end of the air inlet pipe is connected to the other end of the shaping tube, and the other end of the air inlet pipe is connected to the air source.

[0012] In some embodiments, a height adjustment device is also included. Two height adjustment devices are respectively arranged on opposite end surfaces of the relative mounting plates of the bracket along the first direction, and both ends of the spindle-shaped axis are respectively connected to the height adjustment devices. The height of the spindle-shaped axis on the bracket is adjusted by using the height adjustment device.

[0013] In some embodiments, the height adjustment device includes a first driving member, a first slideway, a first sliding member, and a mounting seat;

[0014] The first slideway is arranged on the mounting plate along the second direction, and the first sliding member is slidably arranged on the first slideway and can reciprocate along the length direction of the first slideway;

[0015] The first sliding member is provided with a first end and a second end opposite to each other along the second direction, a mounting seat is provided at the first end, an end of the spindle-shaped shaft is rotatably connected to the mounting seat, and a driving end of the first driving member is connected to the second end;

[0016] The second direction is perpendicular to the first direction, and under the driving action of the first driving member, the spindle-shaped shaft moves along the second direction.

[0017] In some embodiments, a horizontal tilt adjustment device is also included, and two horizontal tilt adjustment devices are respectively arranged on opposite end surfaces of the bracket relative to the mounting plate along the first direction.

[0018] In some embodiments, the horizontal tilt adjustment device includes a second slideway, a second sliding member, and a second driving member;

[0019] The second slideway is arranged on the bracket along the third direction, and the second sliding member is slidably arranged on the second slideway and can reciprocate along the length direction of the second slideway;

[0020] The mounting plate is fixedly arranged with the second sliding member, the second driving member is arranged at one side of the second slideway, and the driving end of the second driving member is connected with the second sliding member or the mounting plate;

[0021] The third direction is perpendicular to a plane formed by the first direction and the second direction, and under the driving action of the second driving member, the mounting plate moves along the third direction.

[0022] The disclosed embodiment of the present application also proposes a material receiving machine, including the film de-pleating device mentioned in the above embodiment, the film de-pleating device includes a bracket and a spindle-shaped shaft, the spindle-shaped shaft is arranged on the bracket along a first direction, and the spindle-shaped shaft can rotate along its axis relative to the bracket; wherein the area of ​​the radial cross-section of the spindle-shaped shaft gradually decreases from the middle to both ends.

[0023] Through the above technical solution, the present application discloses a film wrinkle removal device, which adopts a spindle-shaped shaft with a thick center and gradually tapered ends. It can better adapt to the characteristics of the film material during the collection of lithium battery copper foil, ensure that the material can be evenly distributed during the winding process, reduce the occurrence of wrinkles, and help improve the collection efficiency and quality. In conjunction with the rotation of the spindle-shaped shaft along the axis, when the film to be collected passes on the outer surface of the spindle-shaped shaft, it is evenly extended from the center of the spindle-shaped shaft to both ends, thereby removing wrinkles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments disclosed in the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments disclosed in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of a film de-wrinkling device disclosed in an embodiment of the present application from a first viewing angle;

[0026] Figure 2 It is a structural schematic diagram of the film de-wrinkling device disclosed in the embodiment disclosed in the present application from a second viewing angle.

[0027] Description of reference numerals:

[0028] 10. Bracket; 11. Mounting plate; 20. Spindle-shaped shaft; 30. Wind knife; 40. Shaping tube; 50. Air inlet pipe; 60. Height adjustment device; 61. First driving member (61); 62. First slideway; 63. First sliding member; 64. Mounting seat; 70. Horizontal tilt adjustment device; 71. Second slideway; 72. Second sliding member; 73. Second driving member; X, first direction; Y, third direction; Z, second direction. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the embodiments disclosed in the present application in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles disclosed in the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0030] The present application discloses and provides these embodiments in order to make the present application disclosed thoroughly and completely, and to fully express the scope disclosed in the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0031] It should be noted that, in the description disclosed in this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the disclosure of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the disclosure of this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0032] In addition, the words "first", "second" and similar words used in the disclosure of this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements.

[0033] It should also be noted that in the description disclosed in this application, 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the disclosure of this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0034] All terms used in this application disclosure have the same meanings as those understood by those of ordinary skill in the art to which this application disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as those in general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0035] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0036] When the copper foil negative electrode material is being collected, wrinkles often appear on the copper foil material. This wrinkle not only affects the quality of the product, but also requires the production equipment to be stopped to remove the wrinkles manually. This affects the equipment utilization rate and increases the labor intensity of the operators. Since the lithium battery copper foil itself is very thin and soft, it is very sensitive to changes in tension and cannot be removed by stretching the copper foil, which can easily lead to the breakage of the copper foil. The existing collection mechanism lacks effective anti-wrinkle measures in design, resulting in the copper foil film material being unable to maintain a continuous and flat state during the winding process.

[0037] In this regard, the present application discloses a thin film wrinkle removal device to solve the problem that thinner films such as lithium battery films cannot be wrinkled by stretching.

[0038] It should be noted that the first direction, the second direction, and the third direction mentioned in the present application can be understood as corresponding to the X-axis, the Z-axis, and the Y-axis of the Cartesian coordinate system, respectively.

[0039] like Figure 1-2 As shown, an embodiment disclosed in the present application provides a film depletion device, comprising: a bracket 10 and a spindle-shaped shaft 20, wherein the spindle-shaped shaft 20 is arranged on the bracket 10 along a first direction X, and the spindle-shaped shaft 20 can rotate along its axis relative to the bracket 10; wherein the area of ​​the radial cross-section of the spindle-shaped shaft 20 gradually decreases from the middle to both ends.

[0040] It can be understood that the bracket 10 is used to support and fix the structural parts of other components, and can be a support structure combining a frame and a base or other forms of support structures. The spindle-shaped shaft 20 is arranged on the bracket 10 along the first direction X, and rotates around its own axis. The area of ​​the radial cross-section of the spindle-shaped shaft 20 gradually decreases from the middle to the two ends, and the axial diameter of the spindle-shaped shaft 20 gradually shortens from the middle part to the two ends, so that the spindle-shaped shaft 20 forms a long strip-shaped rotating shaft similar to a spindle, and the structural feature is that the center part is thick and the two ends gradually become thinner. The rotation can be realized by respectively providing bearing seats on the bracket 10, so that the two ends of the spindle-shaped shaft 20 are respectively assembled on the bearing seats, so that the spindle-shaped shaft 20 can achieve flexible rotation.

[0041] The spindle-shaped shaft 20, with its thick center and gradually tapering at both ends, can better adapt to the characteristics of the film material during the reeling of the lithium battery copper foil, ensure that the material can be evenly distributed during the reeling process, reduce the occurrence of wrinkles, and help improve the reeling efficiency and quality. In conjunction with the rotation of the spindle-shaped shaft 20 along the axis, when the film to be reeled passes on the outer surface of the spindle-shaped shaft 20, it is evenly extended from the center of the spindle-shaped shaft 20 to both ends, thereby removing wrinkles.

[0042] The arc from the endpoint of one end of the spindle-shaped axis 20 to the endpoint of the other end is a smoothly transitioned arc with an arc range of 3°-10°. In this embodiment, the arc is 5°.

[0043] In some embodiments, the spindle-shaped shaft 20 includes a functional layer disposed on the outer circumference of the spindle-shaped shaft 20 .

[0044] It can be understood that the functional layer (not shown in the figure) can be coated on the outer peripheral side of the spindle-shaped shaft 20, or it can be sprayed on the outer peripheral side of the spindle-shaped shaft 20. The function of the functional layer is to increase the friction when the spindle-shaped shaft 20 contacts the film, and to protect the film from being scratched when passing through the surface of the spindle-shaped shaft 20.

[0045] The spindle shaft 20 may be a cylindrical shaft with equal diameter, and the outer circumference is coated or sprayed with a functional layer to form a spindle-shaped structure. Alternatively, the spindle shaft 20 may be a spindle-shaped structure with a thick middle and thin ends, and the functional layer is only coated or sprayed on the outer side of the shaft in a thin layer.

[0046] In some embodiments, the functional layer is one of soft rubber, polyurethane, silicone or fabric coating.

[0047] It can be understood that soft rubber has a higher friction coefficient and can provide sufficient friction to ensure that the film does not slip easily during the winding process. Soft rubber is soft in texture and will not damage the surface of the film. It can also absorb vibration and reduce the shaking of the film when it is running at high speed.

[0048] Polyurethane has good wear resistance and a high friction coefficient, which can effectively increase friction. Polyurethane material is flexible and wear-resistant, will not scratch the film, and can provide a good buffering effect. Silicone is soft and has a certain elasticity, which can well protect the film from damage, and has good temperature resistance and chemical stability.

[0049] Silicone also has good friction properties, which can increase the friction between the film and the shaft. Silicone is soft and elastic, which can well protect the film from damage, and has good temperature resistance and chemical stability.

[0050] Fabric coating, coating a layer of fabric material (such as nylon, cotton, etc.) on the surface of the shaft, can increase friction. The surface of the fabric is relatively smooth and will not cause scratches or other damage to the film. At the same time, the fabric also has certain water absorption and breathability.

[0051] For example, soft rubber or polyurethane may be used as the coating material for the outer circumference of the spindle-shaped shaft 20 to ensure that the copper foil can obtain good friction support during the winding process and to avoid scratches on the surface of the film.

[0052] Any one of the above materials can be used as a functional layer to coat or spray on the outside of the spindle-shaped shaft 20, which can not only increase the friction, but also absorb vibration and reduce the shaking of the film during high-speed operation, thereby improving the winding stability and film quality.

[0053] In some embodiments, a wind knife 30 is further included, and at least two wind knives 30 are disposed on the bracket 10 and located at the middle section of the spindle-shaped shaft 20 . The two wind knives 30 are disposed back to back so that the air outlet of the wind knife 30 faces the end of the spindle-shaped shaft 20 .

[0054] It can be understood that the air outlet of the wind knife 30 is a slit-type linear air outlet, and the gas forms a uniform airflow through the air outlet. This airflow covers a large area, forming a thin and powerful air curtain, which blows from the center of the spindle-shaped shaft 20 to both ends to smooth out the wrinkles of the film on the spindle-shaped shaft 20.

[0055] In the process of rewinding the lithium battery copper foil, the air knife 30 is mainly used to prevent the copper foil from wrinkling when it is rolled up. Specifically, the air knife 30 is installed above or obliquely above the middle position of the spindle-shaped shaft 20, so that the air knife 30 blows from the middle position of the copper foil to the two ends of the copper foil. This can increase the tension of the copper foil, keep it flat and wrinkle-free during the rolling process, and at the same time clean the surface of the product, thereby improving the quality of the product.

[0056] Since there are two wind knives 30 and they are arranged in opposite directions, the high-speed airflow generated by the air outlet of the wind knife 30 will exert a force in the opposite direction on the film, which can offset the original relaxation of the film, thereby increasing the tension of the film on the roller. When both ends of the film are impacted by the uniform airflow, the middle part of the film will also be affected by the tension, thus becoming flatter. This dynamic balance helps to eliminate the wrinkles formed in the film during the winding process. It should be emphasized that this tension will not cause the film to tear.

[0057] In some embodiments, a shaping tube 40 and an air inlet pipe 50 are also included. One end of the shaping tube 40 extends toward the middle section of the spindle-shaped shaft 20 and is connected to the air inlet of the wind knife 30. One end of the air inlet pipe 50 is connected to the other end of the shaping tube 40, and the other end of the air inlet pipe 50 is connected to the air source.

[0058] It is understandable that the shaping tube 40 can change the bending angle at will, and then shape and maintain stability, so that the angle and position of the wind knife 30 can be easily adjusted to adapt to the actual working conditions and blow and remove wrinkles from the film. The shaping tube 40 can be a PVC hose, the inner layer is PVC material, and the outer layer may be covered with braided fiber or spiral steel wire. It has the characteristics of softness, corrosion resistance, and aging resistance. It can also be a polyester fiber hose, which is made of high-strength polyester fiber and may have PVC lining. It can also be a metal bellows, specifically a bellows made of stainless steel or other metal materials, which is resistant to high temperature, high pressure, and corrosion.

[0059] One end of the air inlet pipe 50 is connected to an air source, and the other end is connected to the shaping tube 40. The air source may be an air compressor, wherein the air inlet pipe 50 and the shaping tube 40 are arranged on the bracket 10, and valves are arranged on the air inlet pipe 50 and the shaping tube 40, and the air volume is controlled by adjusting the opening of the valve. The air volume of the air knife 30 is adjusted according to the on-site situation to cooperate with the film wrinkle removal.

[0060] In some embodiments, a height adjustment device 60 is also included. Two height adjustment devices 60 are respectively arranged on opposite end surfaces of the relative mounting plate 11 of the bracket 10 along the first direction X, and both ends of the spindle-shaped axis 20 are respectively connected to the height adjustment devices 60. The height of the spindle-shaped axis 20 on the bracket 10 is adjusted by using the height adjustment device 60.

[0061] It can be understood that the film depletion device is a front-end device of the material receiving machine. The film passes through the spindle-shaped shaft 20 of the film depletion device to achieve the wrinkle removal effect before entering the roller shaft of the material receiving machine for receiving, thereby improving product quality and work efficiency.

[0062] Among them, the heights of the rollers of different types of material receiving machines from the ground are different. In order to improve the applicability of the device and to be able to match and apply to different types of material receiving machines, a height adjustment device is added.

[0063] There are two height adjustment devices, which are symmetrically arranged on two oppositely arranged mounting plates 11 on the bracket 10. A plurality of mounting holes are provided on the mounting plates 11 for installation. The two ends of the spindle-shaped shaft 20 are rotatably connected to the height adjustment devices respectively, and each height adjustment device can work independently, so that one end of the spindle-shaped shaft 20 can be made higher than the other end, so as to flexibly adapt to different situations.

[0064] Through the height adjustment device, the spindle-shaped shaft 20 can be adjusted to the same height as the roller shaft of the receiving machine, that is, the axes of the two are at the same height, and the spindle-shaped shaft 20 can also be made higher or lower than the height of the roller shaft of the receiving machine. Specifically, it can be flexibly adjusted according to the actual situation of film de-folding during material collection.

[0065] In some embodiments, the height adjustment device 60 includes a first driving member 61, a first slideway 62, a first sliding member 63, and a mounting seat 64;

[0066] The first slideway 62 is disposed on the mounting plate 11 along the second direction Z, and the first sliding member 63 is slidably disposed on the first slideway 62 and can reciprocate along the length direction of the first slideway 62;

[0067] The first sliding member 63 is provided with a first end and a second end opposite to each other along the second direction Z, a mounting seat 64 is provided at the first end, an end of the spindle-shaped shaft 20 is rotatably connected to the mounting seat 64, and a driving end of the first driving member 61 is connected to the second end;

[0068] The second direction Z is perpendicular to the first direction X, and the spindle-shaped shaft 20 moves along the second direction Z under the driving action of the first driving member 61 .

[0069] It is understandable that the first driving member 61, a component for generating driving force, may be one of a motor, an electric telescopic cylinder, a pneumatic cylinder, and a hydraulic cylinder.

[0070] The first slideway 62 is a track for guiding the sliding member to move along a predetermined track, and may be a linear guide rail, a slide groove, or a ball screw, etc.

[0071] The first sliding member 63 is a component that can move on the first slideway 62, and usually has a guiding structure that cooperates with the slideway. It can be a slide groove that cooperates with the guide rail, or it can be a slider that cooperates with the slide groove, or it can be a nut that cooperates with the roller screw.

[0072] The mounting seat 64 is fixed on the first sliding member 63 and is used for rotational connection with the end of the spindle-shaped shaft 20, and can be understood as a bearing seat.

[0073] For example, the first driving member 61 may be an electric telescopic cylinder, the telescopic rod of which is fixedly connected to the first sliding member 63, and the first sliding member 63 is moved along the linear guide rail by telescoping, thereby driving the spindle-shaped shaft 20 to move up and down along the second direction Z, thereby adjusting the height of the spindle-shaped shaft 20 relative to the roller shaft of the material receiving machine, so that the spindle-shaped shaft 20 is the same height as the roller shaft or slightly lower or higher than the roller shaft. The motor of the electric telescopic rod may be a stepping motor or a servo motor.

[0074] In order to make the height of the spindle-shaped shaft 20 consistent with that of the roller of the receiving machine, a rough adjustment is first performed, and then a precise adjustment is performed. In order to make the distance of the precise adjustment clearly visible, a ruler or scale mark is respectively provided on the frame body on both sides of the bracket 10, and the ruler or scale mark is provided along the second direction Z. A marking arrow is provided on the first sliding member 63, and the marking arrow points to the ruler or scale mark. The distance of precise adjustment can be known from the marking arrow. For example, the height difference between the end of the spindle-shaped shaft 20 and the end of the roller is 2 cm by measuring with a level ruler. The first driving member 61 is started and the height is raised by two centimeters, so as to achieve the height consistency between the two. In this way, when the film enters the stage where the roller rotates to receive the material, the smoothness of the film conveying by the spindle-shaped shaft 20 is maintained without wrinkles.

[0075] In some embodiments, a horizontal tilt adjustment device 70 is further included, and two horizontal tilt adjustment devices 70 are respectively arranged along the first direction X on the opposite end surfaces of the bracket 10 relative to the mounting plate 11.

[0076] It can be understood that it is necessary not only to adjust the height of the spindle-shaped shaft 20 relative to the roller shaft of the receiving machine, but also to make the spindle-shaped shaft 20 and the axis of the roller shaft relatively parallel. Therefore, two horizontal tilt adjustment devices 70 are spaced and symmetrically arranged on the bracket 10 along the first direction X. The horizontal tilt adjustment device 70 is arranged on the end surface of the mounting plate 11 away from the height adjustment device 60, and can make the mounting plate 11 move relative to the bracket 10 along the third direction Y, so as to adjust the parallelism of the spindle-shaped shaft 20 with respect to the roller shaft, so that

[0077] When the film passes through the spindle shaft 20, the thicker middle part of the spindle shaft 20 will generate greater tension on the film, which helps to remove wrinkles on the film. The spindle shaft 20 is set parallel to the roller of the receiving machine to ensure that the film will not deviate or twist during the transmission process. This parallel setting helps to keep the film in a straight line and reduce wrinkles caused by angle deviation.

[0078] In some embodiments, the horizontal tilt adjustment device 70 includes a second slide 71, a second sliding member 72, and a second driving member 73;

[0079] The second slideway 71 is disposed on the bracket 10 along the third direction Y, and the second sliding member 72 is slidably disposed on the second slideway 71 and can reciprocate along the length direction of the second slideway 71;

[0080] The mounting plate 11 is fixedly arranged with the second sliding member 72, the second driving member 73 is arranged at one side of the second slideway 71, and the driving end of the second driving member 73 is connected with the second sliding member 72 or the mounting plate 11;

[0081] The third direction Y is perpendicular to a plane formed by the first direction X and the second direction Z, and the mounting plate 11 moves along the third direction Y under the driving action of the second driving member 73 .

[0082] It is understandable that the second slideway 71, which is a track for guiding the sliding member to move along a predetermined track, may be a linear guide rail, a slide groove or a ball screw, etc.

[0083] The second driving member 73 is a member for generating driving force, and may be a motor, an electric telescopic cylinder, a pneumatic cylinder, a hydraulic cylinder, or a member provided with a hand wheel and a lead screw.

[0084] The second sliding member 72 is a component that can move on the second slideway 71, and usually has a guiding structure that cooperates with the slideway. It can be a slide groove that cooperates with the guide rail, or it can be a slider that cooperates with the slide groove, or it can be a nut that cooperates with the lead screw.

[0085] For example, the second slideway 71 is two guide rails that are spaced apart, the mounting plate 11 is spaced apart with two sliders, and the sliders are adapted to be mounted on the guide rails; the second driving member 73 is a lead screw, the second sliding member 72 is a nut, the mounting plate 11 and the nut are fixedly arranged, a handwheel is arranged at one end of the lead screw, and by manually rotating the handwheel, the driving nut drives the mounting plate 11 to move on the guide rail along the third direction Y through the slider.

[0086] In order to make the spindle-shaped shaft 20 and the axis of the receiving machine roller parallel to each other, a rough adjustment is first performed, and then a precise adjustment is performed. In order to make the precise adjustment distance clearly visible, a ruler or scale mark is respectively provided on the upper end of the frame body of the bracket 10, and the ruler or scale mark is arranged along the third direction Y. An identification arrow is provided on the mounting plate 11, and the identification arrow points to the ruler or scale mark. The distance of precise adjustment can be known from the marking arrow. The distance from the two ends of the spindle-shaped shaft 20 to the receiving machine roller is made the same, so as to achieve a parallel effect.

[0087] Example of a work process divided into a preparation phase and an action phase.

[0088] Preparation stage:

[0089] The height adjustment device 60 and the horizontal tilt adjustment device 70 are activated to make the spindle-shaped shaft 20 and the roller shaft of the material receiving machine have the same height and are in a parallel state. The position of the first sliding member 63 is adjusted by the first driving member 61 so that the spindle-shaped shaft 20 is at an optimal height.

[0090] Operational phase:

[0091] Start feeding the wrinkled film.

[0092] Due to the spindle-shaped shaft 20 having a thick middle and thin ends, the film will be evenly stretched when passing through the spindle-shaped shaft 20 and blown from the center of the spindle-shaped shaft 20 to both ends with the help of the wind knife 30 to smooth out the wrinkles of the film on the spindle-shaped shaft 20 .

[0093] At the same time, the film passes through the spindle-shaped shaft 20, which is rotated due to friction, further helping the film to pass evenly and remove wrinkles. After the film passes through the spindle-shaped shaft 20 smoothly, it enters the roller of the receiving machine for collection.

[0094] Through the above process, the special shape of the spindle-shaped shaft 20 and its parallel arrangement with the roller of the receiving machine can be effectively used to remove wrinkles on the film, ensuring that the film is flat when finally collected. This method not only improves the quality of the film, but also improves production efficiency.

[0095] The disclosed embodiment of the present application also proposes a material receiving machine, including the film de-pleating device mentioned in the above embodiment, the film de-pleating device includes a bracket 10 and a spindle-shaped shaft 20, the spindle-shaped shaft 20 is arranged on the bracket 10 along the first direction X, and the spindle-shaped shaft 20 can rotate along its axis relative to the bracket 10; wherein, the area of ​​the radial cross-section of the spindle-shaped shaft 20 gradually decreases from the middle to both ends.

[0096] The use of the spindle-shaped shaft 20, with its structural features of being thick in the center and gradually tapering at both ends, can better adapt to the characteristics of the film material during the collection of the lithium battery copper foil, ensure that the material can be evenly distributed during the winding process, reduce the occurrence of wrinkles, and help improve the collection efficiency and quality. In conjunction with the rotation of the spindle-shaped shaft 20 along the axis, when the film to be collected passes on the outer surface of the spindle-shaped shaft 20, it is evenly extended from the center of the spindle-shaped shaft 20 to both ends, thereby removing wrinkles. So far, the various embodiments disclosed in the present application have been described in detail. In order to avoid obscuring the concepts disclosed in the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0097] Although some specific embodiments disclosed in the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are only for illustration, and are not intended to limit the scope disclosed in the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit disclosed in the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. A film de-wrinkling device, characterized in that: include: Bracket (10); a spindle-shaped shaft (20), the spindle-shaped shaft (20) being arranged on the support (10) along a first direction (X), and the spindle-shaped shaft (20) being capable of rotating along its axis relative to the support (10); The area of ​​the radial cross section of the spindle-shaped shaft (20) gradually decreases from the middle to both ends.

2. The film de-wrinkling device according to claim 1, characterized in that: The spindle-shaped shaft (20) comprises a functional layer, wherein the functional layer is arranged on the outer peripheral side of the spindle-shaped shaft (20).

3. The film de-wrinkling device according to claim 2, characterized in that: The functional layer is one of soft rubber, polyurethane, silicone or fabric coating.

4. The film de-wrinkling device according to claim 1, characterized in that: Also includes: Wind knives (30), at least two of the wind knives (30) are arranged on the bracket (10) and located at the middle section of the spindle-shaped shaft (20), and the two wind knives (30) are arranged back to back so that the air outlets of the wind knives (30) face the ends of the spindle-shaped shaft (20).

5. The film de-wrinkling device according to claim 4, characterized in that: Also includes: A shaping tube (40), one end of which extends toward the middle section of the spindle-shaped shaft (20) and is connected to the air inlet of the wind knife (30); An air intake pipe (50), one end of which is connected to the other end of the shaping pipe (40), and the other end of which is connected to an air source.

6. The film de-wrinkling device according to claim 1, characterized in that: Also includes: A height adjustment device (60), wherein two of the height adjustment devices (60) are respectively arranged on opposite end surfaces of the mounting plate (11) of the bracket (10) along a first direction (X), and both ends of the spindle-shaped shaft (20) are respectively connected to the height adjustment devices (60), and the height of the spindle-shaped shaft (20) on the bracket (10) is adjusted by using the height adjustment devices (60).

7. The film de-wrinkling device according to claim 6, characterized in that: The height adjustment device (60) comprises a first driving member (61), a first slideway (62), a first sliding member (63) and a mounting seat (64); The first slideway (62) is arranged on the mounting plate (11) along the second direction (Z); the first sliding member (63) is slidably arranged on the first slideway (62) and is capable of reciprocating along the length direction of the first slideway (62); The first sliding member (63) is provided with a first end and a second end opposite to each other along the second direction (Z), the mounting seat (64) is arranged at the first end, the end of the spindle-shaped shaft (20) is rotatably connected to the mounting seat (64), and the driving end of the first driving member (61) is connected to the second end; The second direction (Z) is perpendicular to the first direction (X), and under the driving action of the first driving member (61), the spindle-shaped shaft (20) moves along the second direction (Z).

8. The film de-wrinkling device according to claim 6, characterized in that: Also includes A horizontal tilt adjustment device (70), wherein two horizontal tilt adjustment devices (70) are respectively arranged on opposite end surfaces of the relative mounting plate (11) of the bracket (10) along a first direction (X).

9. The film de-wrinkling device according to claim 8, characterized in that: The horizontal tilt adjustment device (70) comprises a second slideway (71), a second sliding member (72), and a second driving member (73); The second slideway (71) is arranged on the bracket (10) along the third direction (Y), and the second sliding member (72) is slidably arranged on the second slideway (71) and is capable of reciprocating along the length direction of the second slideway (71); The mounting plate (11) and the second sliding member (72) are fixedly arranged, the second driving member (73) is arranged on one side of the second slideway (71), and the driving end of the second driving member (73) is connected to the second sliding member (72) or the mounting plate (11); The third direction (Y) is perpendicular to a plane formed by the first direction (X) and the second direction (Z), and under the driving action of the second driving member (73), the mounting plate (11) moves along the third direction (Y).

10. A material receiving machine, characterized in that; It comprises a film de-wrinkling device as described in any one of claims 1 to 9.

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