A kind of online polishing equipment for lower pinch roll of portal type coiler

Abstract

The utility model discloses a kind of pavilion formula coiler lower pinch roll on-line polishing equipment, including fixed base fixed below rack, lifting frame driven by lifting cylinder, transverse swing mechanism and array polishing component.Lifting frame is accurately lifted through heavy load roller guide mechanism, so that polishing block and rotating lower pinch roll dynamic contact;Transverse drive cylinder drives polishing block to reciprocate along roll axis, realize the synchronous on-line polishing of roll surface circumferential and axial.Position sensor and safety pin ensure accurate positioning and maintenance locking.The equipment can complete efficient polishing in narrow space without stopping and occupying production gap, eliminate the safety hazard of manual operation, improve the flatness of roll surface and strip surface quality, significantly improve the efficiency of rolling line continuous production.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment, specifically to an online grinding device for the lower clamping roller of a gate-type winding machine. Background Technology

[0002] In the steel rolling production process, the frame coiler is a key piece of equipment for continuous coiling of strip steel. Its core component, the lower pinch roll, provides clamping force to ensure the smooth transport and tight winding of the strip steel during the coiling process, directly affecting the forming quality and surface precision of the strip steel. However, the lower pinch roll operates in a high-temperature, high-friction environment for extended periods. Due to factors such as strip steel friction and oxidation, defects such as adhering steel, iron filings, and oxide scale can easily accumulate on the roll surface. If these defects are not addressed in a timely manner, they will cause surface scratches, indentations, and other quality problems during subsequent strip steel transport, severely hindering the improvement of strip steel product quality.

[0003] Currently, the industry primarily relies on manual grinding techniques to address defects on the surface of the lower pinch roll. Specifically, when defects such as adhered steel or iron filings are detected on the lower pinch roll surface, the coiler operation must be paused or production breaks utilized. Workers then use handheld angle grinders, sandpaper, and other tools to perform grinding operations in the confined space beneath the equipment and close to rotating components. During this process, workers must manually control the grinding force and area to remove impurities adhering to the roll surface in an attempt to restore its flatness and minimize its impact on the subsequent strip surface.

[0004] The aforementioned manual grinding technique has significant drawbacks. Operators must operate in a confined space below the coiler, close to the rotating lower clamping roller and the gaps between complex equipment. They are prone to mechanical injuries due to accidental contact with rotating parts, tool slippage, or limited space. The force and angle of manual operation are difficult to control precisely, resulting in insufficient flatness of the roller surface. Manual grinding requires machine shutdown or occupies production gaps, severely interrupting the continuous production process of the rolling line and restricting production efficiency.

[0005] Therefore, the above problems urgently need to be solved. Utility Model Content

[0006] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide an online grinding device for the lower pinch roll of a gate-type coiler. By integrating a fixed base, a lifting mechanism, a transverse swing mechanism and a heavy-duty roller guide mechanism, it realizes online dynamic grinding of the lower pinch roll in a narrow space, solving the problems of low efficiency and high safety hazards of manual grinding and the inability of traditional equipment to adapt to the space limitations of the gate-type structure, while improving grinding accuracy and strip surface quality.

[0007] Technical Solution: This utility model provides an online grinding device for the lower pinch roller of a gate-type coiler, including a fixed base installed below the coiler frame; a lifting mechanism mounted on the fixed base; a lifting frame connected to the lifting mechanism; a grinding assembly mounted on the lifting frame; a lateral swing mechanism driven by the grinding assembly; and a heavy-duty roller guide mechanism located between the lifting frame and the fixed base. The lifting mechanism drives the lifting frame and grinding assembly to move up and down towards or away from the lower pinch roller, the lateral swing mechanism drives the grinding assembly to reciprocate along the axial direction of the lower pinch roller, and the heavy-duty roller guide mechanism ensures the accuracy and stability of the lifting frame during the lifting process. The fixed base is installed below the coiler frame, providing a stable installation foundation for the entire equipment. The lifting mechanism drives the lifting frame and grinding components to rise and fall, allowing the grinding components to move closer to the lower pinch roller (entering the working state) or further away (exiting the working state). As the core working component, the grinding components directly grind the surface of the lower pinch roller, removing roller wear, oxide scale, unevenness, and other defects, restoring the flatness and smoothness of the roller surface. The lateral swing mechanism drives the grinding components to move back and forth along the axial direction of the lower pinch roller, ensuring that the grinding components can cover the entire axial range of the lower pinch roller, avoiding localized missed grinding, and achieving uniform grinding of the entire length of the roller surface. The heavy-duty roller guide mechanism provides precise guidance during the lifting frame's raising and lowering process.

[0008] Furthermore, in this application, an online grinding device for the lower clamping roller of a gate-type coiler includes a lifting mechanism comprising a pair of lifting cylinders. The lifting cylinders are mounted on a fixed base and positioned below both ends of the lower clamping roller. The output ends of the lifting cylinders support the bottom of the lifting frame. The pair of lifting cylinders, respectively installed below both ends of the lower clamping roller, synchronously output driving force to support the bottom of the lifting frame, achieving stable lifting and lowering of the lifting frame and grinding components. This ensures balanced force at both ends and avoids tilting of the lifting frame due to unilateral force. The lifting cylinders can precisely control the extension and retraction amount via hydraulic or pneumatic means, thereby accurately adjusting the lifting height of the lifting frame and grinding components. This allows the grinding components to precisely reach the optimal grinding distance from the lower clamping roller, adapting to grinding requirements under different wear levels.

[0009] Furthermore, this application discloses an online grinding device for the lower pinch roll of a gate-type coiler. The grinding assembly includes a grinding mounting base and a set of grinding block assemblies. The grinding block assemblies are arrayed along the axial direction of the lower pinch roll on the grinding mounting base. Each grinding block assembly includes a modular grinding bracket and grinding blocks. The grinding blocks are mounted on the modular grinding bracket. When the lower pinch roll rotates and the grinding blocks abut against it, the grinding blocks grind the circumferential surface of the lower pinch roll. The grinding mounting base provides a unified mounting foundation for the set of grinding block assemblies. By arraying the grinding blocks along the axial direction of the lower pinch roll, the axial arrangement accuracy and positional stability of the grinding block assemblies are ensured, allowing each grinding block assembly to work synergistically on the surface of the lower pinch roll. The grinding block assembly adopts a combination structure of modular grinding brackets and grinding blocks. The modular design allows the grinding brackets and grinding blocks to be manufactured, assembled, and replaced separately, facilitating flexible combination of different types according to the specifications (such as diameter and material) and grinding requirements of the lower pinch roll. The grinding blocks and supports are of various sizes. When the lower pinch roller rotates and the grinding blocks come into contact with the roller surface, the grinding blocks use the rotational force of the lower pinch roller to perform circumferential grinding on the roller surface. This can remove wear marks, oxide layers, micro-protrusions and other defects distributed circumferentially on the roller surface, achieving uniform circumferential finishing of the roller surface. A set of grinding block assemblies is arrayed along the axial direction of the lower pinch roller. Combined with the drive of the transverse oscillation mechanism, it can cover the entire axial length of the lower pinch roller, ensuring that the roller surface can be fully ground in both the axial and circumferential directions, avoiding grinding blind spots.

[0010] Furthermore, in this application, an online grinding device for the lower pinch roll of a gate-type coiler includes a transverse oscillation mechanism comprising a transverse drive cylinder, a pair of transverse bearing seats, a transverse shaft, and a transverse support. The transverse drive cylinder is mounted on a fixed base, the pair of transverse bearing seats are mounted on a lifting frame, the transverse shaft passes through the pair of transverse bearing seats, and the transverse support is mounted on the transverse shaft. The output end of the transverse drive cylinder is connected to the transverse support via a transverse cylinder lug. The grinding mounting base is located on the transverse support. When the grinding block contacts the lower pinch roll, the transverse drive cylinder drives the transverse support to reciprocate along the transverse shaft, thereby causing the grinding block to grind the radial surface of the lower pinch roll. The transverse drive cylinder, serving as the power source, is mounted on a fixed base. Its output end is connected to the transverse support via a transverse cylinder lug, providing stable driving force to drive the transverse support to reciprocate along the transverse axis. This provides power support for the grinding block to perform radial grinding along the lower pinch roller. The transverse axis provides a precise guide trajectory for the reciprocating movement of the transverse support, ensuring that the transverse support moves smoothly along a straight line and avoids deviation. The transverse support, mounted on the transverse axis, not only supports the grinding mounting base and grinding block assembly but also serves as a transmission component, transmitting the driving force of the transverse drive cylinder to the grinding assembly. This enables the grinding block to reciprocate radially along the lower pinch roller, thus completing the radial grinding operation on the roller surface. When the grinding block contacts the lower pinch roller, the transverse support, driven by the transverse drive cylinder, drives the grinding block to reciprocate along the transverse axis. Combined with the rotation of the lower pinch roller, this allows the grinding block to perform all-round, multi-angle grinding on the roller surface, achieving a coordinated radial and circumferential grinding effect.

[0011] Furthermore, in this application, an online grinding device for the lower pinch roller of a gate-type coiler includes a heavy-duty roller guide mechanism comprising guide slides disposed on both sides of a fixed base and heavy-duty roller assemblies installed on both ends of a lifting frame. The heavy-duty roller assemblies roll in cooperation with the guide slides. When the lifting cylinder drives the lifting frame to rise and fall, the heavy-duty roller assemblies roll along the guide slides to limit the movement trajectory of the lifting frame. The guide slides are disposed on both sides of the fixed base, and the heavy-duty roller assemblies are installed on both ends of the lifting frame, with the two rolling in cooperation. When the lifting cylinder drives the lifting frame to rise and fall, the heavy-duty roller assembly rolls along the guide slide, which strictly limits the movement trajectory of the lifting frame, ensuring that it can only rise and fall in the set vertical direction, avoiding lateral deviation or tilting. The guide slide provides a clear guiding path for the heavy-duty roller assembly, which always stays in contact with the guide slide during rolling, providing precise guidance and positioning for the lifting frame's rise and fall, ensuring that the lifting frame does not deviate from the preset axis position during the lifting process. The heavy-duty roller assembly has a strong load-bearing capacity, capable of bearing the weight of the lifting frame, grinding components, and other upper structures, and transferring the weight to the fixed base through the guide slide, providing stable support during the lifting frame's rise and fall, and preventing the lifting frame from deforming or shaking due to excessive weight.

[0012] Furthermore, in this application, an online grinding device for the lower pinch roll of a gate-type coiler includes a position detection bracket on the lifting frame, a second sensor on the position detection bracket, and a grinding waiting position detection sensor and a grinding working position detection sensor on the fixed base. The grinding working position detection sensor is located above the grinding waiting position detection sensor. When grinding is not in progress, the second sensor corresponds to the grinding waiting position detection sensor. When grinding is required, the lifting cylinder drives the lifting frame to move upward until the second sensor corresponds to the grinding working position detection sensor, and then grinding begins.

[0013] Furthermore, in this application, an online grinding device for the lower pinch roll of a gate-type coiler includes a safety pin seat on the fixed base and a safety pin hole (not shown) corresponding to the safety pin seat on the lifting frame. When the equipment is under maintenance, the safety pin (not shown) passes through the safety pin hole and inserts into the safety pin seat to lock the lifting frame. A second sensor on the position detection bracket cooperates with a grinding waiting position detection sensor and a grinding working position detection sensor on the fixed base. Through the correspondence between the sensors, the position status of the lifting frame and grinding components is accurately detected. When grinding is not in progress, the second sensor corresponds to the grinding waiting position detection sensor, indicating that the equipment is in standby mode; when grinding, the second sensor corresponds to the grinding working position detection sensor, indicating that the equipment has entered working mode. The two detection sensors are distributed vertically on the fixed base (the grinding working position detection sensor is located at the top), setting precise limit points for the lifting frame's raising and lowering. The precise correspondence between the second sensor and the corresponding detection sensor ensures that the lifting frame reaches the preset waiting position or working position each time it is raised or lowered, avoiding improper distance between the grinding component and the lower clamping roller due to positional deviation (too close and it will easily collide, too far and it will not be able to grind).

[0014] Furthermore, in the online grinding equipment for the lower pinch roller of the archway-type coiler of this application, a buffer limiting plate is provided in the fixed base, and the buffer limiting plate is located directly below the heavy-duty roller assembly. When the lifting frame descends to the lowest position, the heavy-duty roller assembly will contact the buffer limiting plate, thereby limiting the further descent of the lifting frame. The buffer limiting plate can absorb part of the impact force, slow down the descent speed of the lifting frame, reduce the vibration and impact generated during collision, play a buffering and shock absorption role, and protect the lifting frame and the grinding components above it.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects: 1. The online grinding equipment for the lower pinch roll of a gate-type coiler described in this utility model integrates a lifting mechanism, a lateral swing mechanism, a heavy-duty roller guiding mechanism, and a position detection sensor to achieve dynamic and automated online grinding of the continuously rotating lower pinch roll during production. This completely avoids the traditional manual grinding operation that requires machine shutdown or occupies production intervals, significantly improving the continuous operating time and overall efficiency of the rolling production line.

[0016] 2. The online grinding equipment for the lower pinch roll of a gate-type coiler described in this utility model is stably installed under the frame with a fixed base, a heavy-duty roller guide mechanism to ensure lifting accuracy and stability, an axial array arrangement of modular grinding block components, and a transverse swing mechanism to drive the grinding blocks to reciprocate along the roller surface axially. This effectively solves the installation and movement problems caused by the narrow space and complex structure under the gate-type coiler. This design not only ensures reliable operation of the equipment in a confined space and eliminates the safety hazards of manual operation in dangerous areas, but also significantly improves the flatness and smoothness of the roller surface through uniform grinding covering the entire axial direction, thereby directly improving the surface quality of the strip steel products. Attached Figure Description

[0017] Figure 1 This utility model provides a schematic diagram of the structure of an online grinding device for the lower pinch roller of a gate-type coiler. Figure 1 ; Figure 2 This utility model provides a schematic diagram of the structure of an online grinding device for the lower pinch roller of a gate-type coiler. Figure 2 .

[0018] Explanation of reference numerals on the accompanying drawings: 1-Fixed base, 11-Grinding waiting position detection sensor, 12-Grinding working position detection sensor, 13-Safety pin seat, 14-Buffer limit plate; 2-Lifting mechanism, 21-Lifting cylinder; 3-Lifting frame, 31-Position detection bracket, 32-Second sensor; 4-Grinding component, 41-Grinding mounting base, 42-Grinding block assembly, 421-Modular grinding bracket, 422-Grinding block; 5-Transverse swing mechanism, 51-Transverse drive cylinder, 52-Transverse bearing seat, 53-Transverse shaft, 54-Transverse support, 55-Transverse cylinder lug; 6-Heavy-duty roller guide mechanism, 61-Guide slide plate, 62-Heavy-duty roller assembly. Detailed Implementation

[0019] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 like Figure 1 , Figure 2 The online grinding equipment for the lower pinch roll of a gate-type coiler shown below includes the following assembly process and operation: The fixed base 1 is securely installed under the frame of the archway-type winding machine, providing the installation foundation for the entire equipment. The fixed base 1 has guide slides 61 on both sides and a buffer limit plate 14 on the inner side, which is located directly below the heavy-duty roller group 62. The fixed base 1 is also equipped with a grinding waiting position detection sensor 11, a grinding working position detection sensor 12 (the grinding working position detection sensor 12 is located above the grinding waiting position detection sensor 11), and a safety pin seat 13. A pair of lifting cylinders 21 of the lifting mechanism 2 are mounted on the fixed base 1 and are respectively located below both ends of the lower clamping roller. The output end of the lifting cylinder 21 supports the bottom of the lifting frame 3. Heavy-duty roller sets 62 are installed on both ends of the lifting frame 3. The heavy-duty roller sets 62 roll in cooperation with the guide slides 61 on both sides of the fixed base 1 to form a heavy-duty roller guide mechanism 6. The lifting frame 3 is provided with a position detection bracket 31, on which a second sensor 32 is installed. At the same time, the lifting frame 3 is also provided with a safety pin hole corresponding to the safety pin seat 13, and a pair of transverse bearing seats 52 are installed thereon, with the transverse shaft 53 passing through the pair of transverse bearing seats 52. The grinding mounting base 41 of the grinding assembly 4 is mounted on the transverse support 54, and a set of grinding block assemblies 42 are mounted in an array along the lower clamping roller axial direction on the grinding mounting base 41; each grinding block assembly 42 consists of a modular grinding support 421 and a grinding block 422, and the grinding block 422 is fixed on the modular grinding support 421. The transverse drive cylinder 51 of the transverse swing mechanism 5 is mounted on the fixed base 1, and its output end is connected to the transverse support 54 through the transverse cylinder lug 55. The transverse support 54 is mounted on the transverse shaft 53. When the equipment is in standby mode, the lifting frame 3 is in a low position under the action of the lifting cylinder 21. At this time, the second sensor 32 corresponds to the grinding waiting position detection sensor 11, and the grinding component 4 is away from the lower pinch roller. When the lower pinch roller needs to be polished, the lifting cylinder 21 is activated and drives the lifting frame 3 to rise. During this process, the heavy-duty roller assembly 62 rolls along the guide slide plate 61 to ensure the accuracy and stability of the lifting frame 3's lifting and lowering. The lifting cylinder 21 stops moving when the second sensor 32 corresponds to the polishing work position detection sensor 12. At this time, the polishing block 422 comes into contact with the rotating lower pinch roller surface. Subsequently, the transverse drive cylinder 51 is activated, and its output end drives the transverse support 54 to reciprocate along the transverse axis 53 through the transverse cylinder lug 55. This, in turn, drives the polishing mounting base 41 and the polishing block assembly 42 to move synchronously, causing the polishing block 422 to reciprocate along the axial direction of the lower pinch roller. In conjunction with the rotation of the lower pinch roller, the polishing block 422 achieves synchronous circumferential and axial polishing of the lower pinch roller surface. After the grinding operation is completed, the lifting cylinder 21 drives the lifting frame 3 to descend, and the heavy-duty roller group 62 rolls down along the guide slide plate 61 until the heavy-duty roller group 62 contacts the buffer limit plate 14. The lifting frame 3 stops descending, and at this time the second sensor 32 corresponds to the grinding waiting position detection sensor 11 again, and the equipment returns to the standby state. When the equipment needs to be inspected and maintained, the safety pin can be passed through the safety pin hole on the lifting frame 3 and inserted into the safety pin seat 13 to lock the lifting frame 3 and ensure the safety of the inspection and maintenance process.

[0021] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An online grinding device for the lower pinch roller of a gate-type coiler, characterized in that: include: A fixed base (1) is installed below the frame of the winding machine; Lifting mechanism (2), which is mounted on fixed base (1); A lifting frame (3) is connected to a lifting mechanism (2); A polishing assembly (4) is mounted on a lifting frame (3); A transverse swing mechanism (5) is driven to be connected to the grinding assembly (4); Heavy-duty roller guide mechanism (6), which is located between the lifting frame (3) and the fixed base (1); The lifting mechanism (2) is used to drive the lifting frame (3) and the grinding assembly (4) to move up and down to get closer to or away from the lower clamping roller. The lateral swing mechanism (5) is used to drive the grinding assembly (4) to move back and forth along the axial direction of the lower clamping roller. The heavy-duty roller guide mechanism (6) is used to ensure the accuracy and stability of the lifting frame (3) during the lifting process.

2. The online grinding equipment for the lower pinch roller of a gate-type coiler according to claim 1, characterized in that, The lifting mechanism (2) includes a pair of lifting cylinders (21), which are mounted on the fixed base (1) and located below both ends of the lower clamping roller. The output end of the lifting cylinder (21) supports the bottom of the lifting frame (3).

3. The online grinding equipment for the lower pinch roller of a gate-type coiler according to claim 2, characterized in that, The grinding assembly (4) includes a grinding mounting base (41) and a set of grinding block assemblies (42). The grinding block assemblies (42) are arranged in an array along the axial direction of the lower pinch roller on the grinding mounting base (41). The grinding block assembly (42) includes a modular grinding bracket (421) and grinding blocks (422). The grinding blocks (422) are mounted on the modular grinding bracket (421). When the lower pinch roller rotates and the grinding blocks (422) abut against the lower pinch roller, the grinding blocks (422) grind the circumferential surface of the lower pinch roller.

4. The online grinding equipment for the lower pinch roller of a gate-type coiler according to claim 3, characterized in that, The transverse swing mechanism (5) includes a transverse drive cylinder (51), a pair of transverse bearing seats (52), a transverse shaft (53), and a transverse support (54). The transverse drive cylinder (51) is mounted on a fixed base (1), the pair of transverse bearing seats (52) is mounted on a lifting frame (3), the transverse shaft (53) passes through the pair of transverse bearing seats (52), and the transverse support (54) is mounted on the transverse shaft (53). The output end of the transverse drive cylinder (51) is connected to the transverse support (54) through a transverse cylinder lug (55). The grinding mounting seat (41) is located on the transverse support (54). When the grinding block (422) abuts against the lower pinch roller, the transverse drive cylinder (51) drives the transverse support (54) to reciprocate along the transverse shaft (53), thereby driving the grinding block (422) to grind the surface of the lower pinch roller radially.

5. The online grinding equipment for the lower pinch roller of a gate-type coiler according to claim 4, characterized in that, The heavy-duty roller guide mechanism (6) includes guide slides (61) on both sides of the fixed base (1) and heavy-duty roller sets (62) installed on both ends of the lifting frame (3). The heavy-duty roller sets (62) roll in cooperation with the guide slides (61). When the lifting cylinder (21) drives the lifting frame (3) to rise and fall, the heavy-duty roller sets (62) roll along the guide slides (61) to limit the movement trajectory of the lifting frame (3).

6. The online grinding equipment for the lower pinch roller of a gate-type coiler according to claim 5, characterized in that, The lifting frame (3) is provided with a position detection bracket (31), and the position detection bracket (31) is provided with a second sensor (32). The fixed base (1) is provided with a grinding waiting position detection sensor (11) and a grinding working position detection sensor (12). The grinding working position detection sensor (12) is located above the grinding waiting position detection sensor (11). When grinding is not performed, the second sensor (32) corresponds to the grinding waiting position detection sensor (11). When grinding is required, the lifting cylinder (21) drives the lifting frame (3) to move up until the second sensor (32) corresponds to the grinding working position detection sensor (12) and then grinding begins.

7. The online grinding equipment for the lower pinch roller of a gate-type coiler according to claim 6, characterized in that, The fixed base (1) is provided with a safety pin seat (13), and the lifting frame (3) is provided with a safety pin hole corresponding to the safety pin seat (13). When the equipment is under maintenance, the safety pin passes through the safety pin hole and inserts into the safety pin seat (13) to lock the lifting frame (3).

8. The online grinding equipment for the lower pinch roller of a gate-type coiler according to claim 7, characterized in that, The fixed base (1) is provided with a buffer limiting plate (14), which is located directly below the heavy-duty roller assembly (62).

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