A coil inner ring gathering clamp
Patent Information
- Application Number
- CN202510533116.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-11-03
AI Technical Summary
In existing technologies, misalignment occurs on the inner ring of steel coils, leading to increased production costs, low efficiency, and reduced yield.
Design a steel coil inner ring aligning fixture including a clamping cylinder, a fixed pressure plate, a clamping rod, and an open pressure plate. The clamping rod and pressure plate are driven by a hydraulic system to align the inner ring of the steel coil, ensuring simple operation and no safety hazards.
It effectively reduces production costs, improves production efficiency, increases yield, and meets the collection needs of different steel coil specifications.
Smart Images
Figure CN123024775A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a clamp, specifically a clamp for aligning the inner coil of a steel coil, belonging to the field of steel coil production technology. Background Technology
[0002] The finished steel coils produced by push-pull pickling units have a misalignment problem on the inner ring. To meet user needs and on-site packaging requirements, the coils with misalignment need to be re-rolled and repaired to eliminate the misalignment. However, this not only increases the processing cost per ton of steel but also affects delivery efficiency and may adversely impact the product yield. To reduce production costs, improve production efficiency, and increase yield, this fixture, based on the principles of reducing labor intensity and minimizing safety hazards, is designed as a cold-rolled steel coil inner ring alignment fixture to accommodate different steel coil specifications. Summary of the Invention
[0003] This invention addresses the technical problem of inner ring misalignment commonly encountered in current pickling units during the production of finished cold-rolled steel coils. It presents a simple-to-operate and safety-free inner ring alignment fixture for cold-rolled steel coils. Applying this fixture in the field can effectively reduce production costs, improve production efficiency, and increase yield.
[0004] To achieve the above objectives, the technical solution of the present invention is as follows: a steel coil inner ring alignment clamp, the clamp comprising a clamping cylinder, a fixed pressure plate, a clamping rod, and an open pressure plate, wherein the fixed pressure plate is mounted on the clamping cylinder, and the open pressure plate is placed on the clamping rod. The specific operating steps are as follows: First, the fixed pressure plate is mounted on the clamping cylinder; then, the clamping rod is extended into the steel coil; next, the open pressure plate is placed on the clamping rod; finally, the hydraulic station is activated to actuate the clamping cylinder, driving the clamping rod, thereby achieving clamping between the fixed pressure plate and the open pressure plate, completing the function of aligning the misaligned edges of the inner ring of the steel coil.
[0005] As an improvement of the present invention, one end of the open pressure plate is set as a movable end, and has an oblique notch with an outer opening mirrored by 22.5°, an inner opening mirrored by 15°, and a spacing of 69, which can be quickly installed onto the clamping rod.
[0006] As an improvement of the present invention, the surface of the opening pressure plate should be covered with a polyethylene liner to effectively prevent damage to the steel coil edge under stress. In terms of strength: when the clamping cylinder reaches its maximum lifting force, the opening pressure plate can remain stable and will not deform.
[0007] As an improvement of the present invention, the outer diameter of the open pressure plate is the same as that of the fixed pressure plate, thereby ensuring force balance. After the clamping rod is inserted into the steel coil, the operator can quickly place the open pressure plate into the stop position of the movable end of the clamping rod.
[0008] As an improvement of the present invention, the clamping rod material selection is as follows: to ensure that the clamping rod has sufficient rigidity, 40Cr material is selected. At the same time, to avoid the clamping rod sagging, the clamping rod guide sleeve (cantilever support point) is installed on the fixed baffle.
[0009] As an improvement of the present invention, in order to achieve effective coverage of the entire series of products: according to the stroke (200) of the clamping cylinder and the width (800-1630) of the steel coil, the clamping rod is provided with a variety of stops of different widths. The stop features are: the opening is 97, the outer diameter of the stop block is Φ200, the width is 50, it is installed on the clamping rod, and it is chamfered to facilitate the installation of the opening pressure plate.
[0010] As an improvement of the present invention, one end of the fixed pressure plate serves as a fixed end, equivalent to a support, and the fixed pressure plate remains stationary when the clamping cylinder is activated; the surface of the fixed pressure plate is covered with a polyethylene liner to effectively prevent damage to the edge of the steel coil under stress. In terms of strength: when the clamping cylinder reaches its maximum lifting force, the fixed pressure plate remains stable and will not deform.
[0011] As an improvement of the present invention, the outer diameter of the fixed pressure plate should be as follows: based on the range of outer diameter of the steel coil at the unit outlet being Φ1100-Φ2100, the inner diameter being Φ610, and the misalignment of the inner ring of the steel coil, a fixed pressure plate with an outer diameter of Φ750 is designed.
[0012] As an improvement to this invention, a clamping cylinder is used, which is convenient to operate; moreover, the hydraulic system is stable and can provide greater power; and thirdly, it also presents another hydraulic fastening scenario (such as a hydraulic wrench).
[0013] The required lifting force of the clamping cylinder: Based on the accumulated field experience, the required lifting force of the clamping cylinder varies depending on the thickness and specifications of the steel coil. The maximum lifting force is 60 tons, which is necessary to meet the needs of all steel coils on site.
[0014] What should the stroke of the clamping cylinder be? To meet the maximum misalignment requirement, according to incomplete statistics, the maximum misalignment of the inner ring of the steel coil is 200 mm, and the stroke of the clamping cylinder should not be less than 200 mm.
[0015] Finally, to ensure high operating efficiency, the single-stroke action time of the clamping cylinder must be at least 72 seconds.
[0016] Compared to existing technologies, this invention has the following advantages: the main function of the inner coil clamping fixture in this solution is to tighten the inner coil of the steel coil by using a hydraulic station powered by a clamping cylinder, clamping rod, and pressure plate. This device can meet the coiling requirements for steel coils with an outer diameter range of Φ1100-Φ2100, an inner diameter of Φ610, and a width range of 800-1630, achieving comprehensive coverage of the entire range of pickling products, significantly reducing unit production costs, and improving production efficiency and yield. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a clamp for aligning the inner coil of a steel coil.
[0018] Figure 2 This is a schematic diagram of a clamping cylinder.
[0019] Figure 3 This is a schematic diagram of the fixed pressure plate.
[0020] Figure 4 This is a schematic diagram of an open pressure plate.
[0021] In the diagram: 1 is the clamping cylinder, 2 is the fixed pressure plate, 3 is the clamping rod, 4 is the inner ring staggered steel coil, and 5 is the open pressure plate. Detailed Implementation
[0022] To enhance understanding of the present invention, the embodiments will be described in detail below with reference to the accompanying drawings.
[0023] Example 1: See Figure 1 A steel coil inner ring alignment clamp includes a clamping cylinder 1, a fixed pressure plate 2, a clamping rod 3, and an open pressure plate 5. The fixed pressure plate 2 is mounted on the clamping cylinder 1, and the open pressure plate 5 is placed on the clamping rod 3. The specific operating steps are as follows: First, the fixed pressure plate 2 is mounted on the clamping cylinder 1; then, the clamping rod 3 is inserted into the inside of the steel coil; note that the end of the steel coil with misaligned edges on the inner ring is close to the fixed pressure plate 2 (fixed end) for easy alignment; then, the open pressure plate 5 is placed on the clamping rod 3; finally, the hydraulic station is started to activate the clamping cylinder 1, which drives the clamping rod 3, thereby achieving the clamping of the fixed pressure plate 2 and the open pressure plate 5, completing the function of aligning the misaligned edges of the inner ring of the steel coil.
[0024] Among them, see Figure 4The open clamping plate 5 has a movable end and a slanted notch with an outer notch mirrored at 22.5°, an inner notch mirrored at 15°, and a spacing of 69 mm, allowing for quick installation onto the clamping rod. The surface of the open clamping plate should be covered with a polyethylene liner to effectively prevent damage to the steel coil edges under stress. In terms of strength, the open clamping plate remains stable and does not deform when the clamping cylinder reaches its maximum lifting force. The outer diameter of the open clamping plate is the same as the fixed clamping plate, ensuring balanced force. After the clamping rod is inserted into the steel coil, the operator can quickly place the open clamping plate into the movable end stop of the clamping rod.
[0025] Clamping rod material selection: To ensure sufficient rigidity, 40Cr material is selected. At the same time, to prevent the clamping rod from sagging, the clamping rod guide sleeve (cantilever support point) is installed on the fixed baffle.
[0026] To achieve effective coverage of the entire product series: based on the stroke (200) of the clamping cylinder and the width (800-1630) of the steel coil, the clamping rod is equipped with a variety of stops of different widths. The stop features are: the opening is 97, the outer diameter of the stop block is Φ200, the width is 50, it is installed on the clamping rod, and it is chamfered to facilitate the installation of the opening pressure plate.
[0027] See Figure 3 One end of the fixed pressure plate 2 serves as a fixed end, acting as a support, and remains stationary when the clamping cylinder operates. The surface of the fixed pressure plate is covered with a polyethylene liner to effectively prevent damage to the steel coil edges under stress. In terms of strength, the fixed pressure plate remains stable and does not deform when the clamping cylinder reaches its maximum lifting force.
[0028] What should be the outer diameter of the fixed pressure plate? Based on the range of outer diameter of the steel coil at the unit outlet (Φ1100-Φ2100), inner diameter (Φ610), and the misalignment of the inner ring of the steel coil, a fixed pressure plate with an outer diameter of Φ750 is designed.
[0029] See Figure 2 The clamping cylinder 1 is used for several reasons: firstly, it is easy to operate; secondly, the hydraulic system is stable and can provide greater power; and thirdly, it also represents another hydraulic fastening scenario (such as a hydraulic wrench).
[0030] The required lifting force of the clamping cylinder: Based on the accumulated field experience, the required lifting force of the clamping cylinder varies depending on the thickness and specifications of the steel coil. The maximum lifting force is 60 tons, which is necessary to meet the needs of all steel coils on site.
[0031] The stroke of the clamping cylinder should be as follows: To meet the maximum misalignment requirement, according to incomplete statistics, the maximum misalignment of the inner ring of the steel coil is 200 mm, and the stroke of the clamping cylinder should not be less than 200 mm. Finally, regarding the response of the clamping cylinder, to ensure high operating efficiency, its single-stroke action time should be at least 72 seconds.
[0032] Example 2: See Figure 1 A steel coil with misaligned inner edges is placed on a fixed saddle. After inserting clamping rod 3 into the coil, ensure the misaligned end of the coil is against the fixed pressure plate 2 (fixed end) for easy alignment. The operator can place the open pressure plate 5 on the movable end of clamping rod 3, ensuring it is flush against the edge of the coil. Then, the hydraulic station is activated, causing cylinder 1 to actuate and drive clamping rod 3, thus clamping the fixed pressure plate 2 against the open pressure plate 5, completing the alignment of the misaligned inner edges of the coil. Using this coil alignment fixture on a cold rolling pickling production line significantly reduces unit production costs and improves production efficiency and yield.
[0033] It should be noted that the above embodiments are not intended to limit the scope of protection of the present invention. Equivalent transformations or substitutions made based on the above technical solutions all fall within the scope of protection of the claims of the present invention.
Claims
1. A steel coil inner coil retraction clamp, characterized in that, The fixture includes a clamping cylinder, a fixed pressure plate, a clamping rod, and an open pressure plate. The fixed pressure plate is installed on the clamping cylinder, and the open pressure plate is placed on the clamping rod.
2. The steel coil inner ring retraction clamp according to claim 1, characterized in that, One end of the open pressure plate is set as a movable end, and there is a slanted notch with an outer opening mirrored by 22.5°, an inner opening mirrored by 15°, and a spacing of 69, which can be quickly installed onto the clamping rod.
3. The steel coil inner coil retraction clamp according to claim 1, characterized in that, The surface of the open pressure plate should be covered with a polyethylene liner to effectively prevent damage to the steel coil edges when under stress.
4. The steel coil inner ring retraction clamp according to claim 1, characterized in that, The outer diameter of the open pressure plate is the same as that of the fixed pressure plate.
5. A steel coil inner coil retraction clamp according to claim 1, characterized in that, The clamping rod is made of 40Cr material, and the clamping rod guide sleeve (cantilever support point) is installed on the fixed baffle.
6. A steel coil inner coil retraction clamp according to claim 1, characterized in that, The clamping rod is equipped with various stops of different widths. The stop features include: a 97° opening, achieved by a spacer, a stop block with an outer diameter of Φ200 and a width of 50, which is installed on the clamping rod and has a chamfer to facilitate the installation of the opening pressure plate.
7. A steel coil inner coil retraction clamp according to claim 1, characterized in that, One end of the fixed pressure plate serves as the fixed end, and the fixed pressure plate remains stationary when the clamping cylinder is activated; the surface of the fixed pressure plate is covered with a polyethylene liner.
8. A steel coil inner coil retraction clamp according to claim 1, characterized in that, The outer diameter of the fixed pressure plate is Φ750.
9. A steel coil inner coil retraction clamp according to claim 1, characterized in that, The clamping cylinder forming diameter must be no less than 200 mm, and the single-stroke action time of the clamping cylinder must be at least 72 seconds.
10. A steel coil inner coil retraction clamp according to claim 1, characterized in that, The specific operating steps are as follows: First, install the fixed pressure plate on the clamping cylinder; then, extend the clamping rod into the inside of the steel coil; note that the end of the steel coil with misaligned edges on the inner circle should be close to the fixed pressure plate (fixed end) to facilitate the retraction operation; then, place the open pressure plate on the clamping rod; finally, start the hydraulic station to make the clamping cylinder move, drive the clamping rod, thereby realizing the clamping of the fixed pressure plate and the open pressure plate, and completing the function of retracting the misaligned edges of the inner circle of the steel coil.