Silicon carbide ceramic back roller
By using silicon carbide ceramic rollers and flange structures, the problem of reduced support strength of the coating back roller during high-speed rotation was solved, improving wear resistance and deformation resistance, reducing weight and driving torque, and ensuring the stability and precise control of the roller.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN MATERIAL TECH CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-07-03
AI Technical Summary
Existing coating back rollers have mounting flanges with receiving grooves on the ceramic rollers, which reduces the support strength and poses a risk of breakage during high-speed rotation.
The roller is made of silicon carbide ceramic and flanges are set at both ends of the roller. The flanges have protrusions that fit into the roller. The connection is made by screws, combined with pins and threaded sleeves to ensure the connection is firm and the support strength is strong, avoiding the reduction of support strength caused by grooving.
It improves the wear resistance and deformation resistance of the roller, avoids metal impurity contamination, reduces weight, reduces driving torque and inertia, improves overall driving and control performance, avoids roller breakage, and simplifies processing difficulty.
Smart Images
Figure CN224443593U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of coating machine accessories, specifically to a silicon carbide ceramic back roller. Background Technology
[0002] A coating back roller is a rapidly rotating roller-like component used to support foil for coating. During coating, the battery paste flows out through the die lip and adheres to the foil on the back roller. The back roller, acting as a drive roller, moves the foil, and its precision directly determines the consistency of the coating, thus affecting battery performance. Battery coating back rollers are generally made of steel, including a roller cylinder and a roller core. Both the cylinder and core are made of steel, resulting in a low modulus of elasticity. Over time, the cylinder can deform (inadequate circular runout), and coating peeling can lead to rust, further affecting coating quality. Therefore, in related technologies, ceramic materials are used for the cylinder to address these issues. The cylinder is typically connected to the roller core via a flange. A receiving groove is usually provided on the cylinder, and the flange is embedded within this groove for support. However, the inclusion of the receiving groove reduces the cylinder wall thickness and lowers the support strength, posing a risk of breakage during high-speed rotation. Utility Model Content
[0003] This invention provides a silicon carbide ceramic back roller, which solves the technical problem that existing coating back rollers have reduced support strength due to the installation of flanges with receiving grooves on the ceramic roller, resulting in the risk of breakage during high-speed rotation.
[0004] In view of this, the present invention provides a silicon carbide ceramic back roller, comprising:
[0005] The roller has openings at both ends; the roller is a silicon carbide ceramic roller.
[0006] The roller core is coaxially inserted inside the roller.
[0007] Two flanges are fitted onto the roller core and abut against the two end faces of the roller respectively; the flanges have a protrusion on the side facing the roller; the protrusion is adapted to be embedded in the inner side of the roller for supporting the roller; the flanges are connected to the roller by a first screw.
[0008] Optionally, the roller has a plurality of first connecting holes on its end face around its axial direction, and a connector is provided in the first connecting hole; the flange has a second connecting hole corresponding to the first connecting hole; the first screw passes through the second connecting hole and extends into the first connecting hole to be threadedly connected to the connector.
[0009] Optionally, it also includes a plurality of pins, and the end face of the roller is provided with a plurality of first pin holes around its axial direction; the flange is provided with a second pin hole corresponding to the first pin hole; the pins are sequentially inserted into the second pin hole and the first pin hole.
[0010] Optionally, the connector is a threaded sleeve, which is threadedly connected to the first connecting hole, and the threaded sleeve is made of PEEK material.
[0011] Optionally, the threaded sleeve is glued to the first connecting hole.
[0012] Optionally, the threaded sleeve is bonded to the first connecting hole using AB glue.
[0013] Optionally, the flange has an annular fixing part on the side opposite to the protrusion, the annular fixing part is arranged around the roller core, and the annular fixing part is connected to the roller core by a second screw.
[0014] Optionally, the annular fixing part is provided with a plurality of third connecting holes around its axial direction, and the roller core is provided with a fourth connecting hole corresponding to the third connecting holes; the second screw passes through the third connecting hole and extends into the fourth connecting hole and is threadedly connected to the fourth connecting hole.
[0015] Optionally, the roller core is provided with a stepped portion corresponding to each flange, and the stepped portion abuts against the protrusion.
[0016] Optionally, the system further includes two sets of bearing assemblies, each bearing assembly comprising a fixed seat, a bearing, an outer end cap, and an inner end cap, wherein the bearing is disposed within the fixed seat; both ends of the roller core are respectively connected to the bearings of the two sets of bearing assemblies; the outer end cap and the inner end cap are respectively connected to both sides of the fixed seat and are both sealed onto the roller core for sealing the bearings.
[0017] The technical solution of this utility model has the following advantages:
[0018] 1. The roller of this utility model adopts silicon carbide ceramic roller, which improves wear resistance and deformation resistance, avoids metal impurities from the metal layer falling off the metal roller surface from contaminating the coating quality, thereby improving battery performance and safety, reducing the overall weight, and effectively reducing the torque and inertia required when driving the roller, thus significantly improving the overall driving performance and control performance.
[0019] 2. This utility model provides a support strength by providing a protrusion on the flange that fits snugly inside the roller. This avoids reducing the support strength at the grooved part of the roller due to slotting, thus preventing the roller from breaking during high-speed operation and reducing the difficulty of roller processing. While ensuring the support strength of the roller core, the diameter of the roller core between the two protrusions can be appropriately reduced, further reducing the overall weight. Consequently, the torque and inertia required for driving are effectively reduced, which is beneficial for the precise control of the whole machine.
[0020] 3. The flange of this utility model is connected to the roller by the first screw, which ensures the firmness and accuracy of the connection between the flange and the roller core, and facilitates installation and disassembly. Attached Figure Description
[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0022] Figure 1 A schematic diagram of the structure of the silicon carbide ceramic back roller provided by this utility model from a first perspective.
[0023] Figure 2 for Figure 1 Sectional view at point AA;
[0024] Figure 3 A schematic diagram of the structure of the silicon carbide ceramic back roller provided by this utility model from a second perspective.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Roller; 2. Roller core; 3. Flange; 4. Protrusion; 5. First screw; 6. Connector; 7. Pin; 8. Annular fixing part; 9. Second screw; 10. Stepped part; 11. Fixing seat; 12. Bearing; 13. Outer end cover; 14. Inner end cover. Detailed Implementation
[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0030] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0031] For this purpose, please refer to Figures 1 to 3 This embodiment provides a silicon carbide ceramic back roller, including: a roller 1 with openings at both ends; the roller 1 is a silicon carbide ceramic roller; a roller core 2, coaxially inserted inside the roller 1; two flanges 3, sleeved on the roller core 2, and respectively abutting against the two end faces of the roller 1; the flange 3 has a protrusion 4 on the side facing the roller 1; the protrusion 4 is adapted to be embedded in the inner side of the roller 1 for supporting the roller 1; the flange 3 is connected to the roller 1 by a first screw 5.
[0032] It should be noted that the diameter of flange 3 is the same as the diameter of roller 1; the hardness of silicon carbide ceramic roller is greater than 2000 Hv and the elastic modulus is greater than 400 Gpa.
[0033] In this embodiment, roller 1 is a silicon carbide ceramic roller. During coating, the roller surface of roller 1 is in direct contact with the foil material, exhibiting excellent wear resistance and deformation resistance. This avoids metal impurities from the metal layer falling off the metal roller surface from contaminating the coating quality, thereby improving battery performance and safety. Furthermore, the density of silicon carbide is (3.1-3.2) g / cm³. 3The weight is much smaller than that of metal materials, thus reducing the overall weight. Consequently, the torque and inertia required to drive the roller 1 are effectively reduced, resulting in a significant improvement in overall driving and control performance. Furthermore, the flange 3 abuts against the end face of the roller 1, and the protrusion 4 of the flange 3 is fitted tightly into the roller 1. The flange 3 is connected to the roller 1 by the first screw 5, ensuring a firm and precise connection between the flange 3 and the roller core 2, facilitating installation and disassembly. The protrusion 4 supports the roller 1, ensuring support strength and preventing slots on the roller 1 from reducing the support strength at the slots, thereby preventing the roller 1 from breaking at high speeds and reducing the processing difficulty of the roller 1. Since the protrusion 4 cooperates with the roller core 2 at the end of the roller 1 for support, while ensuring the support strength of the roller core 2, the diameter of the roller core 2 between the two protrusions 4 can be appropriately reduced, further reducing the overall weight. Consequently, the torque and inertia required for driving are effectively reduced, which is beneficial for the precise control of the entire machine.
[0034] In one embodiment, such as Figure 2 As shown, the roller 1 has a plurality of first connecting holes on its end face around its axial direction, and a connector 6 is provided in the first connecting hole; the flange 3 has a second connecting hole corresponding to the first connecting hole; the first screw 5 passes through the second connecting hole and extends into the first connecting hole to be threadedly connected to the connector 6.
[0035] In this embodiment, a first connecting hole is provided on the end face of the roller 1, and a second connecting hole is provided on the flange 3 accordingly. A connector 6 is provided in the first connecting hole. During connection, after the first connecting hole and the second connecting hole are aligned, the first screw 5 passes through the second connecting hole and extends into the first connecting hole to connect with the connector 6. By providing the connector 6, since the first screw 5 is usually made of metal, the direct thread connection between the first screw 5 and the first connecting hole is avoided, which would cause the threads of the ceramic material to break. This ensures the connection strength and improves the service life.
[0036] Specifically, such as Figure 3 As shown, the first connecting holes are evenly arranged around the axial direction of roller 1 to improve the uniformity of connection and ensure stability.
[0037] In one embodiment, such as Figure 3 As shown, the silicon carbide ceramic back roller also includes multiple pins 7, and multiple first pin holes are provided on the end face of the roller 1 around its axial direction; the flange 3 is provided with second pin holes corresponding to the first pin holes; the pins 7 are sequentially inserted into the second pin holes and the first pin holes.
[0038] In this embodiment, when connecting the flange 3 and the roller 1, the pins 7 are first used to pass through the second pin hole and the first pin 7 in sequence for positioning connection, so that the second connection hole on the flange 3 is aligned with the first connection hole, which facilitates the connection of the first screw 5 for fixation. At the same time, the roller core 2 and the roller 1 are accurately positioned. The pins 7 can bear the torque transmitted from the roller core 2 to the roller 1, eliminating the gap error that exists when the first screw 5 is fixed alone.
[0039] Specifically, such as Figure 3 As shown, multiple first pin holes are evenly arranged along the axial direction of roller 1 to improve the uniformity of connection and ensure stability.
[0040] Specifically, such as Figure 3 As shown, the first pin hole is located between two adjacent first connecting holes, which makes the arrangement uniform, improves the uniform distribution of torque during connection, and improves the stability during transmission.
[0041] In one embodiment, such as Figure 2 As shown, connector 6 is a threaded sleeve, which is threadedly connected to the first connecting hole. The threaded sleeve is made of PEEK material.
[0042] In this embodiment, a threaded sleeve is used to connect to the first connecting hole, which facilitates installation and disassembly. The threaded sleeve is made of PEEK material to avoid damage to the ceramic threads inside the first connecting hole and to improve service life.
[0043] In one embodiment, the threaded sleeve is glued to the first connecting hole.
[0044] In this embodiment, the threaded sleeve is glued to the first connecting hole to further improve the connection strength and prevent the threaded sleeve from coming out of the first connecting hole.
[0045] In one embodiment, the threaded sleeve is bonded to the first connecting hole by AB glue.
[0046] In this embodiment, a threaded sleeve is used to bond to the first connecting hole with AB glue to improve the connection strength.
[0047] In one embodiment, such as Figure 2 and Figure 3 As shown, the flange 3 has an annular fixing part 8 on the side opposite to the protrusion 4. The annular fixing part 8 is arranged around the roller core 2 and is connected to the roller core 2 by a second screw 9.
[0048] In this embodiment, by setting an annular fixing part 8 and using a second screw 9 to fix it to the roller core 2, it is convenient to install and disassemble, and avoids the situation where the flange 3 and the roller core 2 are welded and fixed, which may cause eccentricity or assembly difficulties when connecting the flange 3 and the roller 1. The roller core 2 and the flange 3 are connected by the second screw 9 to eliminate errors and improve assembly accuracy.
[0049] In one embodiment, the annular fixing part 8 is provided with a plurality of third connecting holes around its axial direction, and the roller core 2 is provided with a fourth connecting hole corresponding to the third connecting holes; the second screw 9 passes through the third connecting hole and extends into the fourth connecting hole and is threadedly connected to the fourth connecting hole.
[0050] It should be noted that the flange 3 is provided with a shaft hole for the roller core 2 to pass through.
[0051] In this embodiment, during connection, the flange 3 is fitted onto the roller core 2, so that the third connection hole is aligned with the fourth connection hole. The second screw 9 passes through the third connection hole and extends into the fourth connection hole to be threadedly connected to the fourth connection hole, which facilitates installation and disassembly.
[0052] In one embodiment, such as Figure 2 As shown, each flange 3 on the roller core 2 is provided with a stepped portion 10, and the stepped portion 10 abuts against the protrusion 4.
[0053] In this embodiment, the two ends of the roller core 2 are provided with stepped portions 10 that abut against the two flanges 3 to limit the movement in the axial direction, prevent deviation during operation, and improve overall stability.
[0054] Specifically, flange 3 is a steel flange 3, which improves the overall strength.
[0055] Specifically, the roller core 2 is made of steel, which improves the load-bearing capacity, avoids deformation due to torque during operation, and ensures that the roller body of the roller core 2 is not affected when the shaft ends at both ends are impacted.
[0056] In one embodiment, such as Figure 2 and Figure 3 As shown, the silicon carbide ceramic back roller also includes two sets of bearing assemblies. The bearing assembly includes a fixed seat 11, a bearing 12, an outer end cover 13, and an inner end cover 14. The bearing 12 is disposed inside the fixed seat 11. The two ends of the roller core 2 are respectively connected to the bearings 12 of the two sets of bearing assemblies. The outer end cover 13 and the inner end cover 14 are respectively connected to both sides of the fixed seat 11 and are both sealed on the roller core 2 to seal the bearing 12.
[0057] It should be noted that both ends of the roller core 2 extend axially through the flange 3 and into the bearing 12.
[0058] In this embodiment, two sets of bearing assemblies are respectively set at both ends of the roller core 2, and the roller core 2 is supported to rotate by the bearing 12 at the shaft head of the roller core 2. The outer end cover 13 and the inner end cover 14 are respectively set on both sides of the fixed seat 11 corresponding to the bearing 12, so as to prevent dust and impurities from entering the fixed seat 11 and affecting the rotation of the roller core 2, thereby improving the service life.
[0059] Specifically, bearing 12 is an angular contact bearing 12, which further improves stability.
[0060] In one embodiment, the silicon carbide ceramic back roller provided in this embodiment is used for room temperature coating. The roller 1 can be filled with a heating medium, and the flange 3 can be without an exhaust hole, which improves the overall strength of the flange 3 and reduces the processing difficulty.
[0061] The installation method of the silicon carbide ceramic back roller provided in this embodiment specifically includes the following steps:
[0062] Step 1: Inject AB glue into the first connection hole;
[0063] Step 2: Screw the PEEK threaded insert into the first connecting hole, scrape off the excess AB glue, and let it stand for 2-3 hours to cure.
[0064] Step 3: Insert the roller core 2 into the roller 1, and then put the flange 3 into the roller core 2;
[0065] Step 4: Place the flange 3 against the end face of the roller 1 and embed the protrusion 4 into the inner side of the roller 1. First, use the pin 7 to pass through the second pin hole and the first pin hole in sequence to fix and position it, and then use the first screw 5 to lock it.
[0066] Step 5: Secure the flange 3 to the roller core 2 with the second screw 9, and perform fine grinding on the outer cylindrical grinder to achieve a circular runout of 1μm. Leave a margin of 0.2-0.5mm on the outer diameter of the roller 1.
[0067] Step 6: Install the bearing 12 onto the roller 1 by heat fitting, tighten it with a lock nut, and then fix the bearing 12 to the fixed seat 11. The fixed seat 11 is provided with an inner end cover 14 and an outer end cover 13 on both sides to shield the connection between the fixed seat 11 and the shaft end of the roller core 2 and prevent impurities from entering.
[0068] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A silicon carbide ceramic back roll characterized by, include: Roller (1) with openings at both ends; The roller (1) is a silicon carbide ceramic roller; The roller core (2) is coaxially inserted inside the roller (1); Two flanges (3) are fitted onto the roller core (2) and respectively abut against the two end faces of the roller (1); the flange (3) has a protrusion (4) on the side facing the roller (1); the protrusion (4) is adapted to be embedded in the inner side of the roller (1) for supporting the roller (1); the flange (3) is connected to the roller (1) by a first screw (5).
2. The silicon carbide ceramic back roller of claim 1, wherein, The roller (1) has a plurality of first connecting holes on its end face around its axial direction, and a connector (6) is provided in the first connecting hole; the flange (3) has a second connecting hole corresponding to the first connecting hole; the first screw (5) passes through the second connecting hole and extends into the first connecting hole to be threadedly connected to the connector (6).
3. The silicon carbide ceramic back roller of claim 2, wherein, It also includes multiple pins (7), and multiple first pin holes are provided on the end face of the roller (1) around its axial direction; the flange (3) is provided with second pin holes corresponding to the first pin holes; the pins (7) are sequentially inserted into the second pin holes and the first pin holes.
4. The silicon carbide ceramic back roller of claim 2, wherein, The connector (6) is a threaded sleeve, which is threadedly connected to the first connecting hole, and the threaded sleeve is made of PEEK material.
5. The silicon carbide ceramic back roller of claim 4, wherein, The threaded sleeve is glued to the first connecting hole.
6. The silicon carbide ceramic back roller of claim 5, wherein, The threaded sleeve is bonded to the first connecting hole using AB glue.
7. The silicon carbide ceramic back roller of any one of claims 1 to 6, wherein, The flange (3) has an annular fixing part (8) on the side opposite to the protrusion (4). The annular fixing part (8) surrounds the roller core (2) and is connected to the roller core (2) by a second screw (9).
8. The silicon carbide ceramic back roller of claim 7, wherein, The annular fixing part (8) is provided with a plurality of third connecting holes around its axial direction, and the roller core (2) is provided with a fourth connecting hole corresponding to the third connecting holes; the second screw (9) passes through the third connecting hole and extends into the fourth connecting hole and is threadedly connected to the fourth connecting hole.
9. The silicon carbide ceramic back roller of Claim 1, wherein, The roller core (2) is provided with a stepped portion (10) corresponding to each flange (3), and the stepped portion (10) abuts against the protrusion (4).
10. The silicon carbide ceramic back roller of Claim 1, wherein, It also includes two sets of bearing assemblies, each bearing assembly including a fixed seat (11), a bearing (12), an outer end cover (13), and an inner end cover (14). The bearing (12) is disposed inside the fixed seat (11). The two ends of the roller core (2) are respectively connected to the bearings (12) of the two sets of bearing assemblies. The outer end cover (13) and the inner end cover (14) are respectively connected to both sides of the fixed seat (11) and are both sealed on the roller core (2) for sealing the bearing (12).