A sleeve dismounting device

Abstract

The utility model relates to the strip rolling production technical field, concretely relates to a sleeve dismounting device, through clamping swing mechanism clamping roll sleeve and can move roll sleeve position, axial transfer mechanism drive clamping swing mechanism moves along the sleeve's axial movement, sleeve centering mechanism receives sleeve and carries out center positioning to it in the axial, sleeve supply mechanism supplies sleeve to sleeve centering mechanism one by one, two clamping parts on the floating grab hand in clamping swing mechanism and the clamping part of right clamping arm end one clamping part and the outer circumferential surface of sleeve form three point enveloping type contact clamping, and good stability, the utility model's each mechanism function is special, and the structure is clear, and the fault diagnosis and maintenance are more convenient, can carry out optimal arrangement according to the scene space, and are not limited by the unloading volume trolley track.

Description

Technical Field

[0001] This utility model relates to the field of strip rolling production technology, specifically to a sleeve disassembly and assembly device. Background Technology

[0002] In the production process of cold rolling and leveling mills for strip and sheet steel, to ensure that thin-gauge, high-strength strip steel receives sufficient rigid support during coiling and to prevent the coil from collapsing during subsequent hoisting and storage, a support component called a "process sleeve" is usually installed on the coiler drum. The reliable installation and removal of this sleeve is one of the key aspects of ensuring continuous and efficient production.

[0003] Currently, the commonly used sleeve assembly and disassembly methods in the industry heavily rely on loading and unloading trolleys. A typical operating procedure is as follows: First, a bridge crane lifts the sleeve to a dedicated sleeve storage platform; then, the sleeve is conveyed via a roller conveyor system to the loading and unloading trolley's carrying position; finally, the loading and unloading trolley lifts the sleeve and, through its own lifting and centering mechanism, precisely mounts the sleeve onto the winding machine's drum. Another improved method is to pre-place the sleeve within a dedicated frame of the same width as the sleeve, which is then extended horizontally by a hydraulic cylinder; the loading and unloading trolley then vertically lifts the sleeve from below, separating it from the frame. After the frame retracts, the trolley moves the sleeve and mounts it onto the winding machine's drum.

[0004] However, as modern rolling production lines develop towards higher speeds, continuous operation, and intelligent operation, the aforementioned traditional sleeve assembly and disassembly methods have revealed many insurmountable bottlenecks: A significant efficiency bottleneck restricts production pace: the installation of the sleeve can only begin after the previous coil has been completely unloaded by the unloading trolley, creating inherent process waiting time. In high-speed rolling production lines, this sequential operation mode severely restricts the improvement of production rhythm and becomes a significant obstacle to increasing overall efficiency.

[0005] Poor equipment versatility and insufficient flexibility: Traditional methods have extremely stringent requirements for the geometric tolerances of the sleeve's outer diameter, width, and other dimensions. When producing strip steel of different specifications requires changing to a corresponding sleeve, existing equipment often struggles to achieve rapid and flexible adaptation and switching, failing to meet the flexible production needs of multiple varieties and small batches.

[0006] The operation process is complex and the auxiliary time is long: the entire disassembly and assembly process involves multiple positioning and alignment, the degree of automation is low, and manual intervention and repeated adjustments are often required, resulting in excessively long non-productive auxiliary time.

[0007] Safety and quality risks exist: manual intervention not only increases operational safety risks, but also easily leads to damage to the sleeve or equipment body due to inaccurate alignment during repeated positioning.

[0008] Therefore, developing a dedicated disassembly and assembly device that can operate independently of the loading and unloading trolley, achieve full automation, high efficiency, high flexibility, and adaptability to multiple specifications of sleeves has become a technical challenge that urgently needs to be solved in this field. Summary of the Invention

[0009] This invention overcomes the shortcomings of the prior art and provides a sleeve assembly and disassembly device, which features the ability to operate independently of the loading and unloading trolley, achieve full automation, high efficiency, high flexibility, and adaptability to multiple sleeve specifications.

[0010] The technical problem solved by this utility model can be achieved by the following technical solution: A sleeve disassembly and assembly device, comprising: The clamping swing mechanism includes a swingable bracket, an asymmetric clamping unit, and a first drive unit that drives the bracket to swing. The asymmetric clamping unit includes a right clamping arm and a left clamping arm mounted on the bracket, and a second drive unit that drives the two clamping arms to open and close synchronously. The end of the left clamping arm is connected to a floating gripper through a rotary joint. The floating gripper is provided with at least two clamping parts. The end of the right clamping arm is provided with one clamping part. A transverse trolley forms an axial conveying mechanism; the bracket is hinged to the transverse trolley via a bearing bracket; the transverse trolley includes a trolley base, a trolley track disposed below the trolley base, and a transverse hydraulic cylinder for pushing the trolley base; The sleeve centering mechanism includes a base; A pair of centering saddles that are slidably disposed on the base and can move toward each other or backwards; A third drive unit that drives the pair of center saddles to move synchronously; A sleeve supply mechanism is used to supply sleeves one by one to the sleeve centering mechanism; wherein, the asymmetric clamping unit is configured such that, when it closes to grip the sleeve, the two clamping parts on the floating gripper and one clamping part at the end of the right clamping arm form a three-point envelope contact clamping with the outer peripheral surface of the sleeve. Furthermore, the first driving unit is a swing hydraulic motor, used to drive the bracket to swing around the hinge axis; the trolley base is provided with rollers, and the trolley base is slidably connected to the trolley track through the internally provided rollers.

[0011] Furthermore, the second drive unit includes a synchronous rack driven by a clamping hydraulic motor. The synchronous rack is connected to the right clamping arm and the left clamping arm respectively via two pull rods to drive them to rotate synchronously and symmetrically.

[0012] Furthermore, the floating gripper is hinged to the left clamping arm via a pin, and its floating rotation angle ranges from ±15° to ±30°.

[0013] Furthermore, the third drive unit includes a transverse double-headed hydraulic cylinder and a lifting hydraulic cylinder. The two piston rods of the transverse double-headed hydraulic cylinder are respectively connected to two centering saddles to drive the centering saddles to move towards or away from each other. The lifting hydraulic cylinder is located below the base. The piston rod end of the lifting hydraulic cylinder is equipped with a spherical joint. The lower end of the base is provided with a spherical pad. The spherical joint and the spherical pad form a self-aligning floating support.

[0014] Furthermore, the base is provided with a C-shaped guide groove, a sliding plate is installed in the C-shaped guide groove, and the centering saddle is slidably mounted on the sliding plate.

[0015] Furthermore, the third drive unit also includes a guide column and a guide cylinder. At least two sets of the guide cylinder and the guide column are provided, and each set is located at the bottom of the base. One end of the guide column is slidably connected inside the guide cylinder, and the other end is connected to the bottom of the base. One end of the guide cylinder is connected to the civil engineering foundation, and the other end is in contact with the bottom of the base.

[0016] Furthermore, the sleeve supply mechanism includes an inclined storage platform and a shift fork assembly for controlling the single rollout of the sleeve. The inclination angle of the storage platform is 5° to 10°. The shift fork assembly includes a cylinder support, a shift fork cylinder, and a movable shift fork. The storage platform is a box-type welded structure. The cylinder support, shift fork cylinder, and movable shift fork are all disposed inside the storage platform. The cylinder support is fixed to the storage platform by bolts. The movable shift fork is hinged to the storage platform. The bottom of the shift fork cylinder is hinged to the cylinder support, and the head is hinged to the tail end of the movable shift fork.

[0017] Furthermore, the upper and lower surfaces of the C-shaped guide groove of the sleeve centering mechanism are each fitted with a sliding plate. The sliding plate is a 20mm thick phosphor bronze sliding plate, and the phosphor bronze sliding plate is fastened to the base by countersunk bolts. Furthermore, the clamping part on the floating gripper and the clamping part at the end of the right clamping arm are nylon pads, and a disc spring is built into the nylon pad.

[0018] The beneficial effects of this utility model are: Compared with existing technologies, this utility model uses a "clamping hydraulic motor + synchronous rack" to drive the gripper arm to open and close. The hydraulic system can be pressurized to 20MPa, generating a radial clamping force of ≥125kN. This ensures that under the high tension environment generated by high-speed rolling, the clamping swing mechanism can firmly grip the sleeve and strip coil, preventing loosening and ensuring process safety. The high-torque hydraulic drive provides sufficient power to overcome the static friction between the sleeve and the coil, enabling reliable assembly and disassembly.

[0019] This utility model discloses a sleeve assembly / disassembly device, which elevates sleeve assembly / disassembly from a "feature of the loading / unloading trolley" to an "independent, parallel process executed by a dedicated automatic assembly / disassembly device," breaking the sequential bottleneck of the traditional process where "the sleeve can only be operated after the loading / unloading trolley has completed unloading." The left and right clamping arms in the clamping swing mechanism can operate in parallel with the loading / unloading trolley, greatly shortening non-rolling time and directly meeting the "fast-paced" requirements of high-speed rolling production lines, thus optimizing the production cycle. At the same time, each mechanism has a specialized function and a clear structure, making fault diagnosis and maintenance more convenient. It can be optimized according to the available space and is not limited by the loading / unloading trolley track.

[0020] The entire process of this utility model adopts the above-mentioned automated control, which reduces manual intervention and avoids repetitive positioning operations; the modular design of each mechanism simplifies the equipment layout and improves system reliability; it breaks through the traditional sleeve size limitation and realizes flexible and rapid switching of multiple sleeve specifications. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the A-direction side view of the transverse trolley of this utility model.

[0024] Figure 3 This is a schematic diagram of the A-direction structure of the transverse trolley of this utility model.

[0025] Figure 4 This is a side view diagram of the sleeve centering mechanism of this utility model from direction B.

[0026] Figure 5 This is a schematic diagram of the sleeve centering mechanism of this utility model along direction B.

[0027] Figure 6 This is a schematic diagram of the sleeve supply mechanism of this utility model.

[0028] Figure 7 This is a schematic diagram of the sleeve supply mechanism of this utility model in use.

[0029] In the diagram: 1-support, 2-transverse trolley, 3-sleeve centering mechanism, 4-sleeve supply mechanism, 5-left clamping arm, 6-right clamping arm, 7-synchronous rack, 8-left gripper, 9-swing hydraulic motor, 10-pull rod, 11-clamping hydraulic motor, 12-unloading trolley; 2-1 Bearing bracket; 2-2 Lateral movement cylinder; 2-3 Trolley base; 2-4 Trolley track; 3-1-Base; 3-2-Slide plate; 3-3-Horizontal double-headed hydraulic cylinder; 3-4-Lifting hydraulic cylinder; 3-5-Spherical joint; 3-6-Spherical pad; 3-7-Guide column; 3-8-Guide cylinder; 3-9-Centering saddle; 4-1-Storage platform; 4-2-Hydraulic cylinder support; 4-3-Hydraulic cylinder fork; 4-4-Modible fork. Detailed Implementation

[0030] First, it should be noted that the automatic sleeve assembly and disassembly device of this utility model also includes an automatic control system for realizing intelligent control of the entire device. The system includes a programmable logic controller (PLC) and multiple sensors and actuators connected to the PLC via signals. The actuators include at least the first drive unit, the second drive unit, the drive unit of the axial transfer mechanism, the drive unit of the sleeve centering mechanism 3, and the drive unit of the sleeve supply mechanism 4. The sensors are used to detect the position and status of each mechanism. The PLC is programmed to automatically control each actuator to coordinate its actions according to a preset program based on the feedback signals from the sensors, thereby completing the automatic gripping, transfer, installation, and disassembly of the sleeve.

[0031] In this invention, the clamping hydraulic motor 11 is connected to the PLC as an actuator; the automatic control system also includes a clamping force sensor or a hydraulic system pressure sensor connected to the PLC. The PLC is configured to control the hydraulic system of the clamping hydraulic motor 11 to pressurize to a preset pressure based on the feedback from the sensor, so as to generate a radial clamping force of not less than 125kN.

[0032] In this invention, the swing hydraulic motor 9 and the transverse cylinder 2-2 are both connected to the PLC as actuators; the automatic control system also includes an angle sensor for detecting the swing angle of the bracket 1 and a position sensor for detecting the axial position of the transverse trolley 2.

[0033] In this invention, the transverse double-headed hydraulic cylinder 3-3 and the lifting hydraulic cylinder 3-4 are connected to the PLC as actuators; the automatic control system also includes a centering position sensor for detecting the position of the centering saddle 3-9.

[0034] The automatic control system in this utility model is configured to control the lifting cylinder 3-4 to lift the sleeve to a preset height, such that the center of the sleeve is located on the swing arc of the clamping swing mechanism.

[0035] In this invention, the shift fork cylinder 4-3 is connected to the PLC as an actuator; the automatic control system also includes a material detection sensor for detecting whether there is a sleeve on the storage platform 4-1.

[0036] The automatic control system also includes a human-machine interface (HMI) that communicates with the PLC to set sleeve specifications, start and stop operations, and display the operating status of the device. The automatic control system is configured to exchange data with the upper-level winding machine control system to collaboratively complete the sleeve disassembly and assembly process.

[0037] The entire process of this utility model adopts the above-mentioned automated control, reducing manual intervention and avoiding repetitive positioning operations; the modular design of each mechanism simplifies the equipment layout and improves system reliability; it breaks through the traditional sleeve size limitation and realizes flexible and rapid switching of multiple sleeve specifications; the automatic control accessories used in this utility model are all existing products, and the various electronic components, in conjunction with the different structures of this invention, realize the automated control of this utility model through the control of a programmable logic controller (PLC). As long as the functions of the electronic components in the prior art can realize the control principle of this utility model, they are all within the protection scope of this utility model. Among them, those that are conventional designs of programmable logic controller (PLC) control principles will not be described in detail in this utility model.

[0038] The technical solution of a sleeve disassembly and assembly device provided by this utility model will be described in detail below through several specific embodiments.

[0039] Reference Figure 1 As shown, a sleeve disassembly and assembly device includes: The clamping swing mechanism includes a swingable support 1, an asymmetric clamping unit, and a first drive unit that drives the support to swing. The asymmetric clamping unit includes a right clamping arm 6 and a left clamping arm 5 mounted on the support 1, and a second drive unit that drives the two clamping arms to open and close synchronously. The end of the left clamping arm 5 is connected to a floating gripper 8 through a rotary joint. The floating gripper 8 is provided with at least two clamping parts, and the end of the right clamping arm 6 is provided with a clamping part. The right clamping arm 6 is an active rigid gripper, and the floating gripper 8 connected to the left clamping arm 5 on the left can realize the stable gripping of sleeves with different outer diameters.

[0040] Reference Figure 1 As shown, the second drive unit of this utility model includes a synchronous rack 7 driven by a clamping hydraulic motor 11. The synchronous rack 7 is connected to the right clamping arm 6 and the left clamping arm 5 respectively through two pull rods 10, so as to drive the two to rotate synchronously and symmetrically, thereby adjusting the opening degree between the right clamping arm 6 and the left clamping arm 5.

[0041] This invention employs a hydraulic motor 11 and a synchronous rack 7 to drive the gripper arm's opening and closing. The hydraulic system can be pressurized to 20MPa, generating a radial clamping force of ≥125kN. This ensures that under the high tension conditions generated by high-speed rolling, the gripping swing mechanism can firmly hold the sleeve and strip coil, preventing loosening and ensuring process safety. The high-torque hydraulic drive provides sufficient power to overcome the static friction between the sleeve and the coil, enabling reliable assembly and disassembly.

[0042] Reference Figure 1 As shown, the floating gripper 8 is hinged to the left clamping arm 5 via a pin, and its floating rotation angle ranges from ±15° to ±30°. In the invention, the floating gripper 8 is hinged to the left clamping arm 5 via a precision pin, forming a rotational degree of freedom of ±25°, wherein the radial clearance is ≤0.5mm. It has a passive follow-up function and can adapt to the deviation of the outer circle profile of the sleeve, thereby achieving stable gripping of sleeves with different outer diameters.

[0043] In this invention, the gripping parts on the floating gripper 8 and the right gripping arm 6 can be wear-resistant liners or elastic pads. In this invention, nylon pads are used, with multiple disc springs built into the nylon pads. When gripping the sleeve, two nylon pads on the floating gripper 8 and one nylon pad on the right gripping arm 6 contact the sleeve. Depending on the gripping position, the nylon pads are tilted slightly to increase the contact area and friction between the nylon pads and the sleeve, thus safely completing the sleeve gripping operation.

[0044] Reference Figure 2 and Figure 3 As shown, the axial transfer mechanism is connected to the clamping swing mechanism for driving the clamping swing mechanism to move along the axial direction of the sleeve. In this invention, the axial transfer mechanism is a transverse trolley 2, and the support 1 is hinged to the transverse trolley 2 via a bearing support 2-1. The first drive unit is a swing hydraulic motor 9, which drives the support 1 to swing around the hinge axis. The swing hydraulic motor 9 of this invention drives a precise ±90° swing. The transverse trolley 2 also includes a trolley base 2-3 located at the bottom of the bearing support 2-1. A trolley track 2-4 is located below the trolley base 2-3. Rollers are installed inside the trolley base 2-3, and the trolley base 2-3 is slidably connected to the trolley track 2-4 via the internally installed rollers. The outer side of the bearing support 2-1 of this invention is machined with screws. The oscillating hydraulic motor 9 is bolted to the bearing bracket 2-1; a transverse hydraulic cylinder 2-2 for pushing the trolley base 2-3 is also provided on one side of the trolley base 2-3; for driving the clamping oscillating mechanism to move axially along the sleeve; the trolley track 2-4 of this utility model is a quenched and hardened track with a hardness of HRC58-62 and a straightness of 0.1mm / m. The transverse trolley 2 drives the clamping oscillating mechanism to complete the axial precise positioning, with a repeatability of ±0.5mm; the bottom of the transverse trolley 2 of this utility model can also be equipped with a double row self-aligning roller bearing to run along the track, wherein the track installation flatness is ≤0.15mm / m.

[0045] Reference Figure 4 and Figure 5 As shown, the sleeve centering mechanism 3 is disposed on the swing path of the clamping swing mechanism and is used to receive the sleeve and center it in the axial direction. The sleeve centering mechanism 3 includes a base 3-1; a pair of centering saddles 3-9 that are slidably disposed on the base 3-1 and can move towards or away from each other; and a third drive unit that drives the pair of centering saddles 3-9 to move synchronously. The base 3-1 of this invention is provided with a C-shaped guide groove, and a sliding plate 3-2 is installed in the C-shaped guide groove. The centering saddle 3-9 is slidably set on the sliding plate 3-2. The sliding plate 3-2 of this invention is made of phosphor bronze, which has the characteristics of wear resistance, fatigue resistance and good elasticity. The specific installation principle is that the C-shaped guide groove of the base 3-1 is machined with threaded holes for installing the phosphor bronze sliding plate, and the phosphor bronze sliding plate is machined with countersunk holes. It is bolted into the C-shaped guide groove of the base 3-1. The upper and lower surfaces of the C-shaped guide groove are each embedded with a phosphor bronze sliding plate with a thickness of 20mm. The phosphor bronze sliding plate is fastened to the base 3-1 by countersunk bolts (ISO 8.8 grade). The bolt head is recessed by ≥0.5mm to ensure full-plane contact of the working surface.

[0046] The third drive unit of this utility model includes a transverse double-headed hydraulic cylinder 3-3 and a lifting hydraulic cylinder 3-4. The two piston rods of the transverse double-headed hydraulic cylinder 3-3 are respectively connected to two centering saddles 3-9, and are used to drive the centering saddles 3-9 to move in opposite directions or in opposite directions. The opposite movement stroke of this utility model is ±300mm, achieving an axial centering accuracy of ≤±1.0mm for the sleeve. The lifting hydraulic cylinder 3-4 is located below the base 3-1, and the piston rod end of the lifting hydraulic cylinder 3-4 is equipped with a spherical joint 3-5. The lower end of the base 3-1 is provided with a spherical pad 3-6, and a self-aligning floating support is formed between the spherical joint 3-5 and the spherical pad 3-6. Specifically, a transverse double-headed hydraulic cylinder 3-3 is installed on the base 3-1. The present invention has two lifting hydraulic cylinders 3-4. The piston rods of the two lifting hydraulic cylinders 3-4 are equipped with spherical joints 3-5. The lower end of the base 3-1 is machined with threaded holes. The spherical pad 3-6 is connected to the base 3-1 by bolts. The bottom ends of the two lifting hydraulic cylinders 3-4 are fixed to the civil engineering foundation by bolts.

[0047] The piston rod ends of the two lifting cylinders 3-4 of this utility model are all machined with fine threads and screwed into the spherical joint 3-5. The bottom of the base 3-1 is provided with a self-aligning base: the spherical pad 3-6 is fixed to the threaded hole of the base 3-1 by hexagonal bolts. The spherical joint 3-5 and the spherical pad 3-6 are paired and ground, wherein the contact spot is ≥85%, forming a self-aligning floating support, wherein the compensation angle is ±2°.

[0048] This utility model integrates a low-friction guiding structure of "two centering saddles 3-9 moving synchronously in opposite directions" and "C-shaped guide groove + phosphor bronze sliding plate", as well as a precise drive of "lateral double-headed hydraulic cylinder 3-3", achieving an axial centering accuracy of ≤±1.0mm. The lateral double-headed hydraulic cylinder 3-3 of this utility model is vertically fixed to the base 3-1 by high-strength bolts via a flange seat. The ends of the double piston rods of the lateral double-headed hydraulic cylinder 3-3 are rigidly connected to the saddle trunnion using spherical bearings, with an axial positioning accuracy of ±0.1mm.

[0049] The third drive unit of this utility model also includes guide posts 3-7 and guide cylinders 3-8. There are at least two sets of guide cylinders 3-8 and guide posts 3-7, which are respectively set at the bottom of the base 3-1. One end of the guide post 3-7 is slidably connected inside the guide cylinder 3-8, and the other end is connected to the bottom of the base 3-1. One end of the guide cylinder 3-8 is connected to the civil engineering foundation, and the other end is in contact with the bottom of the base 3-1. Specifically, two sets of a total of four guide posts 3-7 are installed at the bottom of the base 3-1. The four guide posts 3-7 move inside the four guide cylinders 3-8. Each guide cylinder 3-8 also has a self-lubricating copper sleeve embedded at both ends. The guide cylinders 3-8 are fixed to the civil engineering foundation by bolts.

[0050] Reference Figure 6 and Figure 7As shown, the sleeve supply mechanism 4 is used to supply sleeves one by one to the sleeve centering mechanism. The asymmetric clamping unit is configured such that when it closes to grip the sleeve, the two clamping parts on the floating gripper 8 and one clamping part at the end of the right clamping arm 6 form a three-point enveloping contact with the outer circumference of the sleeve. This invention adopts an asymmetric structure of "left floating gripper 8 + right active rigid gripper 6". Simultaneously, the two nylon pads on the floating gripper 8 and one nylon pad on the right clamping arm 6 contact the sleeve, forming a stable three-point enveloping contact. The ±25° floating capability of the left floating gripper 8 can automatically compensate for the out-of-roundness deviation of the sleeve caused by manufacturing, wear, or hoisting deformation, ensuring uniform distribution of clamping force and avoiding localized stress damage to the sleeve. The right active rigid gripper 6 provides a stable positioning reference, ensuring a definite relative position between the sleeve and the robot arm in the clamping state, laying the foundation for subsequent precise assembly with the drum.

[0051] Reference Figure 6 and Figure 7 As shown, the sleeve supply mechanism 4 of this utility model includes an inclined storage platform 4-1 and a shift fork assembly for controlling the single rollout of the sleeve. The inclination angle of the storage platform 4-1 is 5° to 10°, and the maximum load is 10 tons. The shift fork assembly of this utility model includes a cylinder support 4-2, a shift fork cylinder 4-3, and a movable shift fork 4-4. The storage platform 4-1 is a box-type welded structure. The cylinder support 4-2, the shift fork cylinder 4-3, and the movable shift fork 4-4 are all disposed inside the storage platform 4-1. The cylinder support 4-2 is fixed to the storage platform 4-1 by bolts. The movable shift fork 4-4 is hinged to the storage platform 4-1. The bottom of the shift fork cylinder 4-3 is hinged to the cylinder support 4-2, and the head is hinged to the tail end of the movable shift fork 4-4.

[0052] The optimal tilt angle of the storage platform 4-1 in this invention is 6-8°. This angle allows the sleeve to remain stable in the center position by its own weight during storage, facilitating the gripping swing mechanism or the sleeve centering mechanism 3. The movable fork 4-4 acts as a "latch" and a "positioning stop." When retracted, it allows the sleeve to enter or leave the movable fork 4-4; when extended, it restricts the position of the sleeve, ensuring its accurate initial position on the movable fork 4-4. The fork cylinder support 4-2 of this invention is connected to the storage platform 4-1 via a through-hole-threaded hole structure using ISO 8.8 grade high-strength bolts. The movable fork 4-4 is hinged via a pin shaft to achieve interference-free rotational movement from 0° to 45°, with a rotational clearance of ≤0.1mm.

[0053] The following examples illustrate this point: The working process will be explained using the installation of a sleeve with an outer diameter of 508mm: During operation, the left clamping arm 5 and right clamping arm 6 in the clamping swing mechanism open to their maximum opening positions. The swing hydraulic motor 9 controls the bracket 1 to move to the center position of the sleeve centering mechanism 3. The piston rod of the shift fork cylinder 4-3 extends, the movable shift fork 4-4 rotates, and the sleeve rolls onto the centering saddle 3-9 of the sleeve centering mechanism 3. The piston rod of the transverse double-headed cylinder 3-3 retracts, and the centering saddle 3-9 drives the sleeve to the center position with an accuracy of ≤±1.0mm. The piston rods of the two lifting cylinders 3-4 extend, so that the center of the sleeve is located on the swing arc of the center of the clamping swing mechanism with an error of ≤±1.0mm. The guide column 3-7 and guide cylinder 3-8 limit its lifting and lowering movements and provide support to prevent tipping. Subsequently, the clamping hydraulic motor 11 drives the synchronous rack 7 to move backward, and the floating gripper 8 contacts the sleeve surface with the right clamping arm 6. The right clamping arm 6 performs active positioning, and the floating gripper 8 rotates around the pin under the reaction force of the sleeve until a three-point envelope is formed to form a stable clamp. Then, the hydraulic system of the clamping hydraulic motor 11 is pressurized to make the floating gripper 8 and the right clamping arm 6 firmly grip the sleeve.

[0054] Subsequently, the swing hydraulic motor 9 controls the bracket 1 to swing until the center of the sleeve is aligned with the center of the winding machine drum. The piston rod of the transverse cylinder 2-2 extends, pushing the transverse trolley 2 to the center position of the winding machine drum. The drum expands, and the sleeve is successfully installed on the drum. At this time, the clamping hydraulic motor 11 drives the synchronous rack 7 to move forward, and the left clamping arm 5 and right clamping arm 6 in the clamping swing mechanism open. The piston rod of the transverse cylinder 2-2 retracts, and the transverse trolley 2 drives the clamping swing mechanism to a position that does not affect the operation of the loading and unloading trolley 12. The sleeve installation is completed.

[0055] The installation method and steps of this utility model for the three-point enveloping clamping full-size sleeve automatic disassembly and assembly device are the same when installing a 610mm outer diameter drum as when installing a 508mm outer diameter drum drum.

[0056] The following explanation will be based on the working process of disassembling a steel tail coil sleeve with an outer diameter of 700mm: During operation, the left clamping arm 5 and right clamping arm 6 in the clamping swing mechanism open to their maximum opening positions. The swing hydraulic motor 9 controls the bracket 1 to swing until the gripping center of the floating gripper 8 and the right clamping arm 6 aligns with the center of the coiler drum. The piston rod of the transverse cylinder 2-2 extends, pushing the transverse trolley 2 to the center position of the coiler drum. Then, the clamping hydraulic motor 11 drives the synchronous rack 7 to move backward, and the floating gripper 8 contacts the surface of the strip tail coil with the right clamping arm 6. The right clamping arm 6 performs active positioning, and the floating gripper 8 rotates around the pin shaft under the reaction force of the sleeve until a three-point envelope is formed for stable clamping. Subsequently, the clamping hydraulic motor 11 is controlled to... The hydraulic system of 11 is pressurized, the floating gripper 8 and the right clamping arm 6 firmly grip the tail coil sleeve, the coiler drum is retracted, the coiler pressure roller swings away, the piston rod of the transverse cylinder 2-2 retracts, the transverse trolley 2 drives the clamping swing mechanism away, the swing hydraulic motor 9 controls the clamping swing mechanism to swing to the vertical position, after the overhead crane clamps the tail coil, the clamping hydraulic motor 11 drives the synchronous rack 7 to move forward, the floating gripper 8 and the right clamping arm 6 open, the piston rod of the transverse cylinder 2-2 continues to retract, the transverse trolley 2 drives the swing clamping swing mechanism away to a position that does not affect the operation of the loading and unloading trolley 12, and the disassembly of the strip tail coil sleeve is completed.

[0057] This invention eliminates the waiting time associated with the traditional loading and unloading trolley 12 for disassembling and assembling sleeves, thus adapting to the fast-paced production demands of high-speed rolling lines. This invention can reliably clamp sleeves of different diameters and roundnesses within the φ508-610mm range, achieving the disassembly of "full-size" sleeves and has a wide range of applications.

[0058] In summary, the sleeve assembly and disassembly device of this utility model elevates sleeve assembly and disassembly from an "auxiliary function of the loading and unloading trolley" to an "independent and parallel process executed by a dedicated automatic assembly and disassembly device," breaking the sequential bottleneck of the traditional process where "the sleeve can only be operated after the loading and unloading trolley has completed unloading." The left clamping arm 5 and the right clamping arm 6 in the clamping swing mechanism can operate in parallel with the loading and unloading trolley, greatly shortening the non-rolling time and directly meeting the "fast-paced" requirements of high-speed rolling production lines, thus optimizing the production cycle. At the same time, each mechanism has a specialized function and a clear structure, making fault diagnosis and maintenance more convenient. It can be optimized according to the site space and is not limited by the track of the loading and unloading trolley.

[0059] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention, and all such changes are within the protection scope of the technology.

[0060] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0061] The technical solutions of the various embodiments can be combined with each other, but must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

Claims

1. A sleeve disassembly and assembly device, characterized in that, include: The clamping swing mechanism includes a swingable bracket (1), an asymmetric clamping unit, and a first drive unit that drives the bracket to swing; the asymmetric clamping unit includes a right clamping arm (6) mounted on the bracket (1), a left clamping arm (5), and a second drive unit that drives the two clamping arms to open and close synchronously; the end of the left clamping arm (5) is connected to a floating gripper (8) through a rotary joint, the floating gripper (8) is provided with at least two clamping parts, and the end of the right clamping arm (6) is provided with a clamping part; A transverse trolley (2) forms an axial conveying mechanism; the bracket (1) is hinged to the transverse trolley (2) via a bearing bracket (2-1); the transverse trolley (2) includes a trolley base (2-3), a trolley track (2-4) disposed below the trolley base (2-3), and a transverse hydraulic cylinder (2-2) for pushing the trolley base (2-3); The sleeve centering mechanism (3) includes a base (3-1); A pair of centering saddles (3-9) that are slidably disposed on the base (3-1) and can move toward each other or backwards. A third drive unit that drives the pair of centering saddles (3-9) to move synchronously; Sleeve supply mechanism (4) is used to supply sleeves one by one to the sleeve centering mechanism (3); wherein, the asymmetric clamping unit is configured such that when it closes to grip the sleeve, the two clamping parts on the floating gripper (8) and one clamping part at the end of the right clamping arm (6) form a three-point enveloping contact clamping with the outer peripheral surface of the sleeve.

2. The sleeve disassembly and assembly device according to claim 1, characterized in that: The first driving unit is a swing hydraulic motor (9), which is used to drive the bracket (1) to swing around the hinge axis; the trolley base (2-3) is provided with rollers, and the trolley base (2-3) is slidably connected to the trolley track (2-4) through the rollers provided inside.

3. A sleeve disassembly and assembly device according to claim 1 or 2, characterized in that: The second drive unit includes a synchronous rack (7) driven by a clamping hydraulic motor (11). The synchronous rack (7) is connected to the right clamping arm (6) and the left clamping arm (5) respectively via two pull rods (10) to drive them to rotate synchronously and symmetrically.

4. The sleeve disassembly and assembly device according to claim 1, characterized in that: The floating gripper (8) is hinged to the left clamping arm (5) via a pin, and its floating rotation angle ranges from ±15° to ±30°.

5. The sleeve disassembly and assembly device according to claim 1, characterized in that: The third drive unit includes a transverse double-headed hydraulic cylinder (3-3) and a lifting hydraulic cylinder (3-4). The two piston rods of the transverse double-headed hydraulic cylinder (3-3) are respectively connected to two centering saddles (3-9) to drive the centering saddles (3-9) to move towards or away from each other. The lifting hydraulic cylinder (3-4) is located below the base (3-1). The piston rod end of the lifting hydraulic cylinder (3-4) is equipped with a spherical joint (3-5). The lower end of the base (3-1) is provided with a spherical pad (3-6). A self-aligning floating support is formed between the spherical joint (3-5) and the spherical pad (3-6).

6. A sleeve disassembly and assembly device according to claim 1 or 5, characterized in that: The base (3-1) is provided with a C-shaped guide groove, and a slide plate (3-2) is installed in the C-shaped guide groove. The centering saddle (3-9) is slidably mounted on the slide plate (3-2).

7. A sleeve disassembly and assembly device according to claim 6, characterized in that: The third drive unit also includes a guide column (3-7) and a guide cylinder (3-8). There are at least two sets of both the guide cylinder (3-8) and the guide column (3-7), which are respectively set at the bottom of the base (3-1). One end of the guide column (3-7) is slidably connected inside the guide cylinder (3-8), and the other end is connected to the bottom of the base (3-1). One end of the guide cylinder (3-8) is connected to the civil engineering foundation, and the other end is in contact with the bottom of the base (3-1).

8. The sleeve disassembly and assembly device according to claim 1, characterized in that: The sleeve supply mechanism (4) includes an inclined storage platform (4-1) and a shift fork assembly for controlling the single rollout of the sleeve. The inclined angle of the storage platform (4-1) is 5° to 10°. The shift fork assembly includes a cylinder support (4-2), a shift fork cylinder (4-3), and a movable shift fork (4-4). The storage platform (4-1) is a box-type welded structure. The cylinder support (4-2), the shift fork cylinder (4-3), and the movable shift fork (4-4) are all located inside the storage platform (4-1). The cylinder support (4-2) is fixed to the storage platform (4-1) by bolts. The movable shift fork (4-4) is hinged to the storage platform (4-1). The bottom of the shift fork cylinder (4-3) is hinged to the cylinder support (4-2), and the head is hinged to the tail end of the movable shift fork (4-4).

9. A sleeve disassembly and assembly device according to claim 6, characterized in that: The upper and lower surfaces of the C-shaped guide groove of the sleeve centering mechanism (3) are each fitted with a sliding plate (3-2). The sliding plate (3-2) is a phosphor bronze sliding plate with a thickness of 20mm. The phosphor bronze sliding plate is fastened to the base (3-1) by countersunk bolts.

10. A sleeve disassembly and assembly device according to claim 1, characterized in that: The clamping part on the floating gripper (8) and the clamping part at the end of the right clamping arm (6) are nylon pads, and a disc spring is built into the nylon pad.

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