Slitting machine guide roller magnetic adsorption device for improving the yield of battery aluminum foil

Abstract

The utility model relates to aluminium foil processing technical field especially is the slitting machine guide roller magnetic adsorption device of improving battery aluminium foil superior product rate, including guide roller mechanism and is used for conducting battery aluminium foil in the slitting process, and guide roller mechanism includes: main component, including the fixed shaft setting on the slitting machine, the fixed shaft outer wall installs the several permanent magnets of circumferential array arrangement, the fixed shaft outside rotatory mounting has the roller body, cooling assembly includes the several cooling flow channels of opening in the circumferential arrangement of roller body inside, and the both ends of cooling flow channel all are connected to the setting of elbow, and the fixed shaft left and right two ends all are opened to have the water inlet and outlet, and the water inlet and outlet inner end all are connected to the setting of cavity, and the cavity inner wall opens the several water holes of circumferential arrangement, and cooling system realizes dynamic sealing circulation in the roller body high -speed rotation, and uniformly efficient heat is taken away, and the magnet performance and operation accuracy are guaranteed, and it is the key of promoting aluminium foil superior product rate.

Description

Technical Field

[0001] This utility model relates to the field of aluminum foil processing technology, specifically to a magnetic adsorption device for the guide rollers of a slitting machine to improve the yield of high-quality battery aluminum foil. Background Technology

[0002] With the rapid development of new energy vehicles and energy storage industries, the demand for high-performance battery aluminum foil for power batteries and energy storage batteries continues to grow. As a key material for battery current collectors, the slitting process of battery aluminum foil is a critical link in the subsequent processing. The guide roller system of the slitting machine is the core component that directly contacts and conducts the foil material, and its technical performance directly affects the finished product quality and production efficiency of the aluminum foil.

[0003] According to CN206242161U, a magnetic seat for the guide roller of a battery aluminum foil slitting machine is disclosed. This technology discloses a technical solution including "a guide roller, a magnetic device, and a bearing seat. The guide roller has guide roller ends at both ends, a central shaft at the outer end of the guide roller ends, and bearing seats installed at both ends of the central shaft. A magnetic device is installed on the side of the bearing seat near the guide roller. The magnetic device includes a magnetic seat and a permanent magnet. The permanent magnet is inside the magnetic seat, and there is a gap between the permanent magnet and the central shaft. The bearing seat and the magnetic seat have the same outer diameter." This technology has the following technical effects: "Based on the magnetic principle, it removes harmful substances such as iron powder generated during the rotation of the guide roller and bearing, prevents splashing onto the material surface, reduces damage to the battery, improves the yield of high-quality battery foil, improves product quality, and eliminates potential safety hazards during production."

[0004] During high-speed operation, the guide rollers of existing battery aluminum foil slitting machines can cause scratches, indentations, and dust pollution due to direct contact and friction between the aluminum foil and the roller surface. At the same time, the eddy current heat and frictional heat generated when the guide rollers rotate can cause temperature rise, which in turn affects the equipment accuracy and material performance, ultimately resulting in surface quality defects and a decrease in the yield of high-quality aluminum foil. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a magnetic adsorption device for the guide roller of a slitting machine to improve the yield of high-quality aluminum foil for batteries. The cooling system achieves dynamic sealed circulation during the high-speed rotation of the roller, uniformly and efficiently removing heat and ensuring the performance and operational accuracy of the magnet, which is the key to improving the yield of high-quality aluminum foil.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a magnetic adsorption device for the guide roller of a slitting machine to improve the yield of high-quality battery aluminum foil, comprising a guide roller mechanism for conducting battery aluminum foil during the slitting process, the guide roller mechanism comprising:

[0007] The main components include a fixed shaft mounted on the slitting machine, several permanent magnets arranged in a circular array installed on the outer wall of the fixed shaft, and a roller body rotatably mounted on the outside of the fixed shaft;

[0008] The cooling assembly includes several cooling channels arranged circumferentially inside the roller body. Both ends of the cooling channels are connected by bends. The left and right ends of the fixed shaft are provided with water inlets and outlets. The inner ends of the water inlets and outlets are connected to cavities. The inner walls of the cavities are provided with several water holes arranged circumferentially.

[0009] Preferably, the cooling assembly further includes outer annular grooves formed on the outer walls of both ends of the fixed shaft, and the positions of the outer annular grooves correspond to a plurality of water holes arranged in a circle. Inner annular grooves are formed on the inner walls of both ends of the roller body, and the positions of the inner annular grooves correspond to a plurality of bends arranged in a circle.

[0010] Preferably, the cooling assembly further includes second sealed bearings installed on both sides between the outer annular groove and the inner annular groove, and the second sealed bearings on both sides of the outer annular groove and the inner annular groove form a complete annular cavity.

[0011] Preferably, the main component further includes a first sealed bearing installed between the two ends of the fixed shaft and the two ends of the roller body, and end caps are fixed to both ends of the fixed shaft.

[0012] Preferably, the permanent magnets are arranged on the outer wall of the fixed shaft in a Hellbeck array manner and are evenly distributed along the axial direction of the fixed shaft.

[0013] Preferably, the roller body is made of austenitic stainless steel.

[0014] Beneficial effects

[0015] This invention provides a magnetic adsorption device for the guide rollers of a slitting machine to improve the yield of high-quality battery aluminum foil. Compared with the prior art, it has the following advantages:

[0016] 1. Coolant is pumped into the cavity through the inlet and outlet of the fixed shaft, and then enters the sealed annular cavity formed by the outer annular groove, inner annular groove, and second sealed bearing through water holes, achieving seamless fluid transition during rotation. Subsequently, the coolant evenly enters the curved channel and axial cooling channel at the end of the roller, efficiently removing eddy current heat and frictional heat, and is finally discharged through the other end loop. The entire cooling cycle is carried out synchronously and continuously during the high-speed rotation of the roller, ensuring reliable transfer of the cooling medium between the rotating and fixed components during roller rotation. This achieves uniform and efficient heat exchange of the coolant along the circumference and axis of the roller, effectively suppressing the temperature rise of the roller, ensuring the stability of the permanent magnet performance and the running accuracy of the roller, thus providing continuous and stable thermal management for aluminum foil slitting, which is a key guarantee for improving the yield of high-quality products.

[0017] 2. Annular outer grooves are precisely machined on the outer walls of both ends of the fixed shaft. The axial position of these outer grooves is precisely aligned with and connected to multiple water holes arranged circumferentially on the inner wall of the fixed shaft cavity. Correspondingly, annular inner grooves are also precisely machined on the inner walls of both ends of the rotating roller. The axial position of these inner grooves is precisely aligned with and connected to the entrances of multiple bends arranged circumferentially at the ends of the roller. When the coolant flows out from the water holes, it first enters this annular cavity, realizing the fluid transfer and transition from the fixed component to the rotating component. Through the annular groove docking structure, the problem of difficulty in direct connection between the fixed water holes and the rotating bends during rotation is avoided. This ensures that the coolant can be continuously, stably, and evenly distributed to all axially distributed bends and cooling channels through the circumferentially distributed water holes, regardless of the rotational motion of the roller. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the side end of the present invention.

[0020] Figure 3 This is a cross-sectional view of the front end of the present invention.

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the structure of part A in the middle.

[0022] In the diagram: 1. Guide roller mechanism; 11. Main body assembly; 111. Fixed shaft; 112. Permanent magnet; 113. Roller body; 114. First sealed bearing; 115. End cap; 12. Cooling assembly; 121. Cooling channel; 122. Bend; 123. Inlet and outlet; 124. Cavity; 125. Water hole; 126. Outer ring groove; 127. Inner ring groove; 128. Second sealed bearing. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a magnetic adsorption device for the guide roller of a slitting machine to improve the yield of high-quality battery aluminum foil, including a guide roller mechanism 1 for conducting battery aluminum foil during the slitting process. The guide roller mechanism 1 includes:

[0025] The main component 11 includes a fixed shaft 111 mounted on the slitting machine, a plurality of permanent magnets 112 arranged in a circular array on the outer wall of the fixed shaft 111, and a roller 113 rotatably mounted on the outside of the fixed shaft 111.

[0026] The cooling assembly 12 includes several cooling channels 121 arranged circumferentially inside the roller body 113. Both ends of the cooling channels 121 are connected to bends 122. The fixed shaft 111 has inlet and outlet ports 123 at both ends. The inner ends of the inlet and outlet ports 123 are connected to cavities 124. The inner wall of the cavity 124 has several water holes 125 arranged circumferentially.

[0027] In this embodiment, the coolant is pumped into the cavity 124 inside the fixed shaft 111 from the inlet / outlet 123 at one end. Under pressure, it flows radially out through the evenly distributed water holes 125 and enters the annular distribution chamber formed by the outer annular groove 126 machined on the outer wall of the fixed shaft 111 and the inner annular groove 127 machined on the inner wall of the roller body 113, and is dynamically sealed by the second sealing bearings 128 on both sides. After the coolant completes circumferential uniform distribution in this dynamically sealed chamber, it then enters the inlets of the bends 122 arranged circumferentially at the ends of the rotating roller body 113, which are connected to the inner annular groove 127. It then flows into the internal cooling channel 121 extending along the axial direction of the roller body 113, carrying away the eddy current heat and frictional heat generated by the high-speed rotation of the roller body. After heat exchange, the coolant collects in the roller body. The water flows into the corresponding annular distribution chamber at the bend 122 at the other end of roller 113, and finally into the cavity 124 through the water hole 125 on the fixed shaft 111 on this side, and is discharged from another inlet / outlet 123, forming a complete circulating cooling circuit that dynamically isolates leakage during operation. Moreover, the entire cooling cycle is carried out synchronously and continuously during the high-speed rotation of roller 113, ensuring that the cooling medium can be reliably transferred between the rotating and fixed parts during the rotation of roller 113. This achieves uniform and efficient heat exchange of the coolant along the circumference and axial direction of roller 113, effectively suppressing the temperature rise of roller 113, ensuring the stability of the permanent magnet 112 performance and the running accuracy of roller 113, thereby providing continuous and stable thermal management for aluminum foil slitting, which is a key guarantee for improving the yield of high-quality products.

[0028] Specifically, the cooling assembly 12 also includes an outer ring groove 126 formed on the outer wall of both ends of the fixed shaft 111, and the position of the outer ring groove 126 corresponds to a number of water holes 125 arranged in a circle. The inner wall of both ends of the roller body 113 is provided with an inner ring groove 127, and the position of the inner ring groove 127 corresponds to a number of bends 122 arranged in a circle.

[0029] In this embodiment, annular outer grooves 126 are precisely machined on the outer walls at both ends of the fixed shaft 111. The axial position of the outer grooves 126 is precisely aligned with and communicates with the multiple water holes 125 arranged circumferentially on the inner wall of the cavity 124 of the fixed shaft 111. Correspondingly, annular inner grooves 127 are also precisely machined on the inner walls at the corresponding positions at both ends of the rotating roller 113. The axial position of the inner grooves 127 is precisely aligned with and communicates with the inlets of the multiple bends 122 arranged circumferentially at the ends of the roller 113. When the coolant flows out from the water holes 125, it first enters this annular cavity, realizing the fluid transfer and transition from the fixed component to the rotating component. Through the annular groove docking structure, the problem of the fixed water holes 125 and the rotating bends 122 being difficult to communicate directly in the rotating state is avoided. This ensures that the coolant can be continuously, stably, and evenly distributed to all the axially distributed bends 122 and cooling channels 121 through the circumferentially distributed water holes 125, regardless of the rotational movement of the roller 113.

[0030] Specifically, the cooling assembly 12 also includes second sealed bearings 128 installed on both sides between the outer ring groove 126 and the inner ring groove 127, and the outer ring groove 126 and the inner ring groove 127 cooperate with the second sealed bearings 128 on both sides to form a complete annular cavity.

[0031] In this embodiment, a set of second sealing bearings 128 are precisely installed on both sides of the corresponding annular cavity formed by the outer annular groove 126 on the outer wall of the fixed shaft 111 and the inner annular groove 127 on the inner wall of the roller body 113. The outer ring of the second sealing bearing 128 is interference-fitted with the roller body 113 and rotates with it, while the inner ring is interference-fitted with the fixed shaft 111 and remains stationary. The sealing lips of the inner sides of the second sealing bearings 128 on both sides are tightly fitted to the corresponding shaft and hole walls, thereby forming a dynamic and reliable radial sealing interface on both axial sides of the outer annular groove 126 and the inner annular groove 127. The bottom of the outer annular groove 126 and the top of the inner annular groove 127 constitute the top and bottom surfaces of the annular cavity, and the inner sealing surfaces of the second sealing bearings 128 on both sides constitute the two sides of the annular cavity, which together enclose a complete annular pressure chamber that is completely isolated from the outside.

[0032] Specifically, the main component 11 also includes a first sealed bearing 114 installed between the two ends of the fixed shaft 111 and the two ends of the roller body 113, and end caps 115 are fixed to both ends of the fixed shaft 111.

[0033] In this embodiment, the sealing structure integrated in the first sealed bearing 114 together with the end cover 115 forms a sealing barrier, completely sealing the core components such as the internal permanent magnet 112 array and cooling component interface in a clean, dry and protected chamber, which effectively prevents pollutants such as dust, water vapor, and oil mist from the external environment from entering the device.

[0034] Specifically, the permanent magnets 112 are arranged on the outer wall of the fixed shaft 111 in a Hellbeck array manner and are evenly distributed along the axial direction of the fixed shaft 111.

[0035] In this embodiment, the permanent magnets 112 are precisely arranged in a circular array according to the specific rules of the Hellbeck array and fixed to the entire outer surface of the fixed shaft 111. The array pattern with alternating polarities is continuously and uniformly distributed along the axial direction of the fixed shaft 111. This allows the magnetic field vector generated by the permanent magnets 112 to be directionally superimposed and focused, thereby generating a strong static magnetic field with significantly enhanced intensity, unidirectional direction, and highly uniform distribution on one side of the outer surface of the rotating roller 113, i.e., the working area through which the aluminum foil passes. At the same time, a very weak magnetic field that is greatly weakened and almost cancels out is generated on the inner side of the fixed shaft 111 and the back of the device. This allows the battery aluminum foil to induce the best eddy current effect under the action of the strong unidirectional magnetic field, obtain extremely stable and sufficient repulsive force to achieve perfect suspension, completely avoid any physical contact, and at the same time, its axial uniform distribution characteristics ensure that the magnetic force on the aluminum foil is completely consistent throughout the entire width direction.

[0036] Specifically, the roller body 113 is made of austenitic stainless steel.

[0037] In this embodiment, the inherent properties of the 113 austenitic stainless steel material of the roller body ensure that it has extremely low magnetic permeability, making it a nearly completely transparent non-magnetic material.

[0038] The working principle and usage process of this utility model are as follows: First, the coolant is pumped into the cavity 124 inside the fixed shaft 111 from the inlet / outlet 123 at one end. Under pressure, it flows radially out through the evenly distributed water holes 125 and enters the annular distribution chamber formed by the connection between the outer annular groove 126 machined on the outer wall of the fixed shaft 111 and the inner annular groove 127 machined on the inner wall of the roller body 113, and is dynamically sealed by the second sealing bearings 128 on both sides. After the coolant completes the circumferential uniform distribution in this dynamically sealed chamber, it then enters the inlets of the bends 122 arranged circumferentially at the ends of the rotating roller body 113, which are connected to the inner annular groove 127. It then flows into the internal cooling channel 121 extending along the axial direction of the roller body 113, carrying away the eddy current heat and frictional heat generated by the high-speed rotation of the roller body. After completing the heat exchange, the coolant is cooled. The liquid collects at the bend 122 at the other end of the roller 113, flows into the corresponding annular distribution chamber, and finally enters the cavity 124 through the water hole 125 on the fixed shaft 111 on that side, and is discharged from another inlet / outlet 123, forming a complete circulating cooling circuit that dynamically isolates leakage during operation. Moreover, the entire cooling cycle is carried out synchronously and continuously during the high-speed rotation of the roller 113, ensuring that the cooling medium can be reliably transferred between the rotating and fixed components during the rotation of the roller 113. This achieves uniform and efficient heat exchange of the coolant along the circumference and axial direction of the roller 113, effectively suppressing the temperature rise of the roller 113, ensuring the stability of the permanent magnet 112 performance and the running accuracy of the roller 113, thus providing continuous and stable thermal management for aluminum foil slitting, which is a key guarantee for improving the yield of high-quality products.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetic adsorption device for the guide roller of a slitting machine to improve the yield of high-quality battery aluminum foil, characterized in that: The guide roller mechanism (1) includes a guide roller mechanism (1) for guiding the battery aluminum foil during the slitting process. The guide roller mechanism (1) includes: The main component (11) includes a fixed shaft (111) set on the slitting machine, a number of permanent magnets (112) arranged in a circular array are installed on the outer wall of the fixed shaft (111), and a roller (113) is rotatably installed on the outside of the fixed shaft (111). The cooling assembly (12) includes several cooling channels (121) arranged circumferentially inside the roller body (113). Both ends of the cooling channels (121) are connected to bends (122). Both ends of the fixed shaft (111) are provided with inlet and outlet ports (123). The inner ends of the inlet and outlet ports (123) are connected to cavities (124). The inner wall of the cavity (124) is provided with several water holes (125) arranged circumferentially.

2. The magnetic adsorption device for the guide roller of the slitting machine for improving the yield of high-quality battery aluminum foil according to claim 1, characterized in that: The cooling assembly (12) also includes an outer ring groove (126) formed on the outer wall of both ends of the fixed shaft (111), and the position of the outer ring groove (126) corresponds to a number of water holes (125) arranged in a circle. The inner wall of both ends of the roller body (113) is provided with an inner ring groove (127), and the position of the inner ring groove (127) corresponds to a number of bends (122) arranged in a circle.

3. The magnetic adsorption device for the guide roller of the slitting machine for improving the yield of high-quality battery aluminum foil according to claim 2, characterized in that: The cooling assembly (12) also includes second sealed bearings (128) installed on both sides between the outer ring groove (126) and the inner ring groove (127), and the outer ring groove (126) and the inner ring groove (127) cooperate with the second sealed bearings (128) on both sides to form a complete annular cavity.

4. The magnetic adsorption device for the guide roller of the slitting machine for improving the yield of high-quality battery aluminum foil according to claim 1, characterized in that: The main component (11) also includes a first sealed bearing (114) installed between the two ends of the fixed shaft (111) and the two ends of the roller body (113), and end caps (115) are fixed at both ends of the fixed shaft (111).

5. The magnetic adsorption device for the guide roller of the slitting machine for improving the yield of high-quality battery aluminum foil according to claim 1, characterized in that: The permanent magnets (112) are arranged on the outer wall of the fixed shaft (111) in a Hellbeck array manner and are evenly distributed along the axial direction of the fixed shaft (111).

6. The magnetic adsorption device for the guide roller of the slitting machine for improving the yield of high-quality battery aluminum foil according to claim 1, characterized in that: The roller body (113) is made of austenitic stainless steel.

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