Turret drive and rolling apparatus

Abstract

This application relates to a turret drive device and a rolling mill. The turret drive device includes a turret shaft mounted on a frame upright and a drive mechanism driven by the turret shaft. The drive mechanism includes: a power source; a first reducer, including an inner ring fixed to the frame upright and an outer ring rotatable relative to the inner ring, the outer ring being linked to the turret shaft; and a connecting member penetrating the frame upright and the inner ring of the first reducer, forming a shear-resistant connection. The solution provided by this application effectively avoids the problems of uneven stress and poor shear resistance caused by traditional threaded connections, and significantly improves the load-bearing limit and operational safety of the turret drive device under heavy-load conditions.

Description

Technical Field

[0001] This application relates to the field of battery production equipment technology, and in particular to turret drive devices and rolling equipment. Background Technology

[0002] Electrode rolling equipment is a key piece of equipment in lithium battery production. Its core consists of two high-hardness pressure rollers that generate pressure by rotating in opposite directions, pressing the electrode from a loose state to a dense state, thereby improving the bonding strength between the active material and the current collector and the energy density.

[0003] In related technologies, when the roller pressing equipment adopts the dual-shaft turret unwinding method, due to the large weight of the material roll, the turret drive device needs to have a large output torque. When using the traditional method of fixing the transmission device with ordinary screws, it will be subjected to a large shear force, which can easily lead to the screw breaking. Moreover, due to the gap problem of the thread pair, the force on multiple mounting screws is uneven when the transmission device is running. The shear force may be concentrated on a few screws or even a single screw, which can further lead to screw breakage and cause serious safety problems. Utility Model Content

[0004] To solve or partially solve the problems existing in the related technologies, this application provides a turret drive device and a rolling equipment, which can effectively avoid the problems of uneven force and poor shear resistance caused by traditional threaded connections, and can significantly improve the load-bearing limit and operational safety of the turret drive device under heavy load conditions.

[0005] The first aspect of this application provides a turret drive device, comprising:

[0006] The turret shaft mounted on the frame upright and the drive mechanism that is connected to the turret shaft for transmission.

[0007] The drive mechanism includes:

[0008] Power source;

[0009] The first reducer includes an inner ring fixed to the frame plate and an outer ring that can rotate relative to the inner ring, the outer ring being linked to the turret shaft;

[0010] The connector penetrates the frame upright plate and the inner ring of the first reducer, forming a shear-resistant connection.

[0011] In one implementation, a rotating connection assembly is further included, comprising a bearing housing and a bearing. The bearing housing is fixed to the frame upright plate, and the bearing is disposed between the turret shaft and the bearing housing, for forming a rotatable connection between the bearing housing and the turret shaft; wherein the connecting member also penetrates the bearing housing.

[0012] In one implementation, the frame upright plate, bearing seat, and inner ring of the first reducer are respectively provided with through holes in opposite positions;

[0013] The connector includes a rod, a limiting part and a locking part located at both ends of the rod;

[0014] The rod passes through the through hole, the limiting part is used to limit the radial and / or axial direction of the connector, and the locking part is used to lock the connector in the axial direction.

[0015] In one implementation, the connector is a bolt, the limiting part is a countersunk head structure of the bolt, and the locking part includes a nut connected to the end of the bolt away from the countersunk head structure.

[0016] In one implementation, the through hole is a reamed hole, the bolt is a reamed hole bolt, the threaded portion of the reamed hole bolt is connected to the nut, and the unthreaded portion of the reamed hole bolt forms a transition fit with the reamed hole.

[0017] In one implementation, the frame upright plate is provided with a polygonal countersunk hole, and the countersunk head structure of the bolt matches the shape of the polygonal countersunk hole, with the countersunk head structure embedded in the polygonal countersunk hole.

[0018] In one implementation, multiple connectors are provided, and the multiple connectors are distributed in a ring around the inner ring of the first reducer. The multiple connectors simultaneously penetrate the frame upright plate and the inner ring of the first reducer, forming a shear-resistant connection.

[0019] In one implementation, a second reducer is provided between the power output end of the power source and the first reducer, and the power source transmits power to the first reducer through the second reducer.

[0020] In one implementation, a turret flange is further included. The turret flange is connected to the outer ring of the first reducer via a first fastener and to the turret shaft via a second fastener, for transmitting power from the outer ring of the first reducer to the turret shaft.

[0021] A second aspect of this application provides a roller pressing apparatus, comprising:

[0022] Unwinding system; and

[0023] The turret drive device as described in the first aspect above is located in the unwinding system.

[0024] The technical solution provided in this application may include the following beneficial effects:

[0025] The solution provided in this application uses a connector that penetrates through the frame upright plate and the inner ring of the first reducer to form a shear-resistant connection, which effectively avoids the problem of uneven force caused by the clearance of traditional threaded pairs and significantly improves the load-bearing limit and operational safety under heavy load conditions.

[0026] Furthermore, the solution provided in this application adopts a shear-resistant connection structure of a reamed hole bolt assembly. Through the precise positioning characteristics of the transition fit between the straight rod section and the through hole, the connection structure is ensured to remain in a tight state during long-term high-load operation, thereby improving operational stability.

[0027] Furthermore, in the solution provided in this application, the first reducer adopts a layered fixing design, with the frame upright plate, bearing seat, and reducer inner ring fixed in sequence. During maintenance, only some nuts need to be removed from the outer flange side to complete the separation of the reducer, without the need to remove all connecting parts or for personnel to enter the equipment for operation, which greatly shortens the maintenance time and reduces the operational risk.

[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0029] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0030] Figure 1 This is a schematic diagram of the turret drive device from a first-view perspective, as shown in the embodiments of this application;

[0031] Figure 2 This is a schematic diagram of the turret drive device shown in the embodiments of this application from a second-view perspective;

[0032] Figure 3 This is a schematic diagram of the drive mechanism of the turret drive device shown in the embodiments of this application.

[0033] Reference numerals: 100, turret drive unit; 110, power source; 120, second reducer; 130, first reducer; 131, inner ring; 132, outer ring; 140, frame upright plate; 141, countersunk hole; 150, rotating connection assembly; 151, bearing housing; 152, bearing; 160, connecting piece; 161, limiting part; 162, rod; 163, locking part; 170, turret shaft; 180, turret flange; 181, first fixing part; 182, second fixing part; 190, braking device. Detailed Implementation

[0034] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0035] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0036] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0037] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In related technologies, when a roller pressing machine adopts a dual-shaft turret unwinding method, the large weight of the coil necessitates a turret drive device with a large output torque. Using conventional methods to fix the transmission device with ordinary screws results in significant shear forces, easily leading to screw breakage. Furthermore, due to the gaps in the threaded connections, the force on multiple mounting screws is uneven during operation, potentially concentrating shear force on a few screws or even a single screw, further causing breakage and serious safety issues. To address these problems, this application provides a turret drive device that effectively avoids the uneven force distribution and poor shear resistance issues caused by traditional threaded connections, significantly improving the load-bearing capacity and operational safety of the turret drive device under heavy load conditions.

[0039] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0040] Figure 1 This is a schematic diagram of the turret drive device from a first-view perspective, as shown in the embodiments of this application; Figure 2 This is a schematic diagram of the turret drive device shown in the embodiments of this application from a second-view perspective; Figure 3 This is a schematic diagram of the drive mechanism of the turret drive device shown in the embodiments of this application.

[0041] Please see also Figures 1-3 This application provides a turret drive device 100, which includes a turret shaft 170 mounted on a frame plate 140 and a drive mechanism that is pulverizedly connected to the turret shaft 170. The drive mechanism includes a power source 110, a first reducer 130, and a connecting member 160. The power source 110 is used to provide rotational power. The first reducer 130 includes an inner ring 131 fixed to the frame plate 140 and an outer ring 132 that can rotate relative to the inner ring 131. The outer ring 132 is linked with the turret shaft 170. The connecting member 160 passes through the frame plate 140 and the inner ring 131 of the first reducer 130 and forms a shear-resistant connection.

[0042] The turret drive unit 100 is supported by the frame plate 140. The drive mechanism includes a servo motor as the power source 110, which transmits power through the first reducer 130. The first reducer 130 can be a worm gear reducer. The inner ring 131 of the first reducer 130 is rigidly fixed to the frame plate 140 through the connector 160, and the outer ring 132 is connected to the turret shaft 170. The connector 160 passes through the frame plate 140, the bearing seat 151 and the inner ring 131 of the reducer, and the connector 160 bears the shear force.

[0043] The solution proposed in this application, through the design of a shear-resistant connection structure for the connectors, can effectively avoid the problems of uneven stress and poor shear resistance caused by traditional threaded connections, and can significantly improve the load-bearing limit and operational safety of the turret drive device under heavy load conditions.

[0044] In some embodiments, the present application also includes a rotating connection assembly 150 for forming a rotatable connection between the bearing housing 151 and the turret shaft 170, wherein the turret shaft 170 is rotatably mounted on the frame upright plate 140 via the rotating connection assembly 150.

[0045] The rotating connection assembly 150 includes a bearing housing 151 and a bearing 152. The bearing housing 151 is fixed to the frame upright plate 140, and the bearing 152 is located between the turret shaft 170 and the bearing housing 151. The bearing 152 can be a self-aligning roller bearing 152, which is sealed and supported by the bearing housing 151 and the end cover. The connecting member 160 also penetrates the bearing housing 151. The connecting member 160 sequentially penetrates the frame upright plate 140, the bearing housing 151, and the inner ring 131 of the first reducer 130, forming a stacked and fixed structure.

[0046] In the solution of this application, the worm and turbine tooth profile design of the first reducer 130 has a self-locking characteristic. When there is no power input, the turbine cannot drive the worm in reverse, thereby passively preventing the turret shaft 170 from unexpectedly reversing due to external loads (such as the weight of the coil).

[0047] See also Figure 3 In some embodiments, the frame upright plate 140, bearing housing 151, and inner ring 131 of the first reducer 130 are each provided with corresponding through holes. Specifically, the frame upright plate 140, bearing housing 151, and inner ring 131 of the first reducer 130 are respectively machined with coaxial through holes. The connecting member 160 includes a rod 162, a limiting part 161 and a locking part 163 located at both ends of the rod 162. The rod 162 passes through the through holes of the frame upright plate 140, bearing housing 151, and inner ring 131 of the first reducer 130. The limiting part 161 of the connecting member 160 is used to limit the connecting member 160 in the radial and / or axial direction, and the locking part 163 is used to lock the connecting member 160 in the axial direction. With this configuration, the through hole alignment design ensures installation accuracy, prevents the connecting member 160 from rotating, and the multi-directional limiting eliminates the risk of loosening of the connecting member 160.

[0048] In some embodiments, the connector 160 is a bolt, the limiting part 161 is a countersunk head structure of the bolt, and the locking part 163 includes a nut connected to the end of the bolt away from the countersunk head structure. The frame upright plate 140 is provided with a polygonal countersunk hole 141, the countersunk head structure of the bolt matches the shape of the polygonal countersunk hole 141, and the countersunk head structure is embedded in the polygonal countersunk hole 141.

[0049] Specifically, the frame upright plate 140 is provided with polygonal countersunk holes 141. The countersunk head structure of the bolt matches the shape of the polygonal countersunk hole 141, and the countersunk head structure is embedded in the polygonal countersunk hole 141. The polygonal countersunk hole 141 of the frame upright plate 140 is a polygonal structure such as a square, regular pentagon, or regular hexagon. The countersunk end of the reamed bolt is machined into a matching polygonal cross section, and cannot be rotated after being embedded. The anti-rotation fit between the countersunk hole 141 and the bolt can effectively eliminate the possibility of bolt loosening and enhance long-term operational stability.

[0050] The countersunk end of the connector 160 in this application is embedded in the polygonal (e.g., square, pentagonal, or hexagonal) countersunk hole 141 of the frame upright plate 140, and the threaded end passes through the bearing housing 151 and the inner ring 131 of the reducer and is locked by a nut. The straight section of the bolt is precisely fitted with the through hole to withstand shear force, and the thread is only used for locking, avoiding the risk of breakage caused by the stress on the threads of traditional bolts.

[0051] In some embodiments, the through hole is a reamed hole, the bolt is a reamed hole bolt, the threaded portion of the reamed hole bolt is connected to the nut, and the unthreaded portion of the reamed hole bolt forms a transition fit with the reamed hole. The unthreaded straight section of the reamed hole bolt transition fits with the reamed holes of the frame upright plate 140, bearing seat 151, and inner ring 131 of the first reducer 130. The threaded section is only connected to the nut. This transition fit enables high-precision positioning, ensures that multiple bolts evenly distribute the load, avoids local stress concentration, and further prevents breakage.

[0052] See also Figures 1-3 In some embodiments, multiple connectors 160 are provided, and the multiple connectors 160 are distributed in a ring around the inner ring 131 of the first reducer 130. The multiple connectors 160 simultaneously penetrate the frame upright plate 140 and the inner ring 131 of the first reducer 130, forming a shear-resistant connection. Multiple reamed bolts are evenly distributed around the inner ring 131 of the first reducer 130, and the bolt axes are parallel to the rotation axis of the turret shaft 170, forming a ring-shaped shear-resistant connection array. The ring-shaped uniform distribution design disperses the shear force to multiple connection points, avoiding the risk of failure caused by single-point overload.

[0053] In some embodiments, a second reducer 120 is further provided between the power output end of the power source 110 and the first reducer 130. The second reducer 120 can be a planetary reducer, and the power source 110 transmits power to the first reducer 130 through the second reducer 120. Specifically, the power output end of the servo motor is connected in series with the second reducer 120, and then connected to the first reducer 130 through a coupling, forming a two-stage reduction and torque amplification transmission chain. The combination of the second reducer 120 and the first reducer 130 provides high torque output.

[0054] In some embodiments, the drive mechanism also includes a braking device 190, which, when triggered, prevents the output of rotational power, ensuring self-locking safety during emergency stops. The braking device 190 can be integrated into the second reducer, acting directly on the output of the servo motor. In the event of an unexpected power failure of the servo motor, the braking device 190 automatically triggers to prevent the turret shaft from slipping backwards due to gravity or material tension, thus avoiding material roll detachment or equipment loss of control. Furthermore, during roll-changing station switching, the braking device 190, in conjunction with the closed-loop control of the servo motor, achieves precise angular positioning of the turret flange 180, ensuring accurate material roll docking.

[0055] In this application, the braking device 190 is used for active and rapid braking to cope with short-term, high-dynamic scenarios such as emergency stops and roll changing positioning; the self-locking characteristic of the first reducer 130 serves as passive redundancy protection, and the two form a dual safety guarantee mechanism. Under high load conditions, even if the braking device 190 fails due to mechanical wear or electrical faults, the first self-locking can still serve as redundant protection.

[0056] In some embodiments, a turret flange 180 is also included. The turret flange 180 is connected to the outer ring 132 of the first reducer 130 via a first fastener 181 and to the turret shaft 170 via a second fastener 182, for transmitting power from the outer ring 132 of the first reducer 130 to the turret shaft 170. The first fastener 181 can be a screw or bolt, and the second fastener 182 can be a key or nut. That is, the turret flange 180 is connected to the outer ring 132 of the first reducer 130 via a pin or bolt and engages with the turret shaft 170 via a key or nut. It should be noted that this application does not limit the types of the first and second fasteners.

[0057] This application transmits power from the outer ring 132 of the first reducer 130 to the turret shaft 170 via the turret flange 180. By setting the turret flange 180, quick disassembly and maintenance can be achieved.

[0058] In related technologies, due to the gaps in the threaded pairs and the influence of installation methods, the position of the screws is not precise, and the preload may also vary. This results in uneven stress on multiple mounting screws during the operation of the transmission device. Under extreme conditions, shear force may be concentrated on a few or even one screw, causing the screw to break. In cases where the coil is heavy, this can easily lead to serious safety hazards.

[0059] As can be seen from the above embodiments, the solution of this application, compared with related technologies, can achieve the following technical effects:

[0060] First, the shear-resistant connection structure using bolt holes, through the transition fit between its straight rod section and the reamed through hole, effectively avoids the problem of uneven force caused by the gap in traditional threaded pairs, resulting in stronger shear resistance and thus significantly improving the load-bearing limit and operational stability of the turret drive device under heavy load conditions.

[0061] Secondly, the first reducer 130 is designed to be fixed in layers through connecting parts. That is, the frame plate 140, bearing seat 151, and reducer inner ring 131 are fixed to each other in sequence by bolts with reamed holes. During maintenance, the reducer can be separated by removing some nuts from the outer turret flange 180 side. There is no need to remove all connecting parts or for personnel to enter the equipment to work, which shortens the maintenance time and reduces the operational risk.

[0062] Third, the non-rotational fit design of the polygonal countersunk hole 141 on the frame upright plate 140 and the countersunk head structure of the reamed hole bolt can eliminate the risk of bolts loosening due to self-rotation caused by vibration or impact. Combined with the precision positioning characteristics of the straight rod section transition fit, it ensures that the connection structure remains tight during long-term high-load operation.

[0063] The turret drive device of this application has been described above. Accordingly, this application also provides a roll forming device, which includes an unwinding system and a turret drive device 100 as described in any of the above embodiments. The turret drive device 100 is disposed in the unwinding system.

[0064] The turret drive device 100 of this application is suitable for the unwinding needs of different materials such as lithium battery electrodes and metal foils, and can be adapted to a variety of unwinding systems, such as coating machines, film slitting machines and other scenarios that require high-frequency roll changing. This application does not limit this.

[0065] The turret drive device 100 of the roller pressing equipment of this application is supported by a frame upright plate 140, powered by a servo motor, and transmits torque through a second reducer 120 and a first reducer 130. The inner ring 131 of the first reducer 130 is rigidly fixed to the frame upright plate 140 through a connector 160, and the outer ring 132 is drivenly connected to the turret shaft 170. The connector 160 passes through the frame upright plate 140, the bearing seat 151, and the inner ring 131 of the reducer.

[0066] The roller pressing equipment provided in this application has a turret drive device 100 with a hinged hole bolt forming a shear-resistant connection with the frame plate 140, bearing seat 151 and inner ring 131 of the first reducer 130, which can significantly improve the load-bearing capacity under heavy load conditions.

[0067] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A turret drive apparatus, characterized by, include: The turret shaft mounted on the frame upright and the drive mechanism that is connected to the turret shaft for transmission. The drive mechanism includes: Power source; The first reducer includes an inner ring fixed to the frame plate and an outer ring that can rotate relative to the inner ring, the outer ring being linked to the turret shaft; The connector penetrates the frame upright plate and the inner ring of the first reducer, forming a shear-resistant connection.

2. The turret drive device according to claim 1, characterized in that: It also includes a rotating connection assembly, which includes a bearing housing and a bearing. The bearing housing is fixed to the frame plate, and the bearing is located between the turret shaft and the bearing housing to form a rotatable connection between the bearing housing and the turret shaft. The connecting member also passes through the bearing housing.

3. The turret drive device according to claim 2, characterized in that: The frame upright plate, bearing seat, and inner ring of the first reducer are respectively provided with corresponding through holes; The connector includes a rod, a limiting part and a locking part located at both ends of the rod; The rod passes through the through hole, the limiting part is used to limit the radial and / or axial direction of the connector, and the locking part is used to lock the connector in the axial direction.

4. The turret drive device according to claim 3, characterized in that: The connector is a bolt, the limiting part is a countersunk head structure of the bolt, and the locking part includes a nut connected to the end of the bolt away from the countersunk head structure.

5. The turret drive device according to claim 4, characterized in that: The through hole is a reamed hole, the bolt is a reamed hole bolt, the threaded portion of the reamed hole bolt is connected to the nut, and the unthreaded portion of the reamed hole bolt forms a transition fit with the reamed hole.

6. The turret drive device according to claim 4, characterized in that: The frame plate is provided with a polygonal countersunk hole, and the countersunk head structure of the bolt matches the shape of the polygonal countersunk hole, and the countersunk head structure is embedded in the polygonal countersunk hole.

7. The turret drive device according to claim 1, characterized in that: The connectors are provided in multiple ways, and the multiple connectors are distributed in a ring around the inner ring of the first reducer. The multiple connectors simultaneously penetrate the frame plate and the inner ring of the first reducer, forming a shear-resistant connection.

8. The turret drive device according to claim 1, characterized in that: A second reducer is also provided between the power output end of the power source and the first reducer, and the power source transmits power to the first reducer through the second reducer.

9. The turret drive device according to claim 1, characterized in that: It also includes a turret flange, which is connected to the outer ring of the first reducer via a first fastener and to the turret shaft via a second fastener, for transmitting the power of the outer ring of the first reducer to the turret shaft.

10. A calendering apparatus characterized by, include: Unwinding system; as well as The turret drive device according to any one of claims 1-9, wherein the turret drive device is disposed in the unwinding system.

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