A sealing modification structure and method for hot coil cutting flying shear blade locking oil cylinder

Abstract

The present invention belongs to the field of mechanical design technology, and discloses a sealing modification structure of a hot coil head shear blade locking cylinder, comprising a cylinder body arranged on a shear drum, and a shaft neck of the cylinder body is provided with two radial grooves distributed axially at intervals, and sealing rings are respectively provided on the two radial grooves. The present invention completely solves the leakage problem after the locking cylinder is installed in the past, and improves the efficiency of blade replacement and installation, and also improves the working efficiency of the head shear. The present invention also provides a sealing modification method for the shear blade locking cylinder of a hot coil head shear.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical design, and in particular relates to a sealing modification structure and method for a hot coil cutting head flying shear blade locking oil cylinder. Background Art

[0002] When assembling the shear blade locking cylinder of the head shear, due to the small installation hole and the lack of observation, improper force or wrong installation method during the installation process will cause damage to the sealing ring, which will eventually cause cylinder leakage, poor locking effect and cylinder failure to open normally and other quality accidents. In addition, there is only one O-ring in the installation part of the cylinder, and there is no other protection measure after damage. The installation and removal of the cylinder is also troublesome, which does not facilitate the repair work and normal use of the equipment. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a sealing modification structure and method for a hot coil cutting shear blade locking cylinder to solve the cylinder leakage problem.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The invention provides a sealing modification structure of a hot coil cutting flying shear blade locking oil cylinder, comprising an oil cylinder body arranged on a flying shear drum, wherein the neck of the oil cylinder body is provided with two radial grooves distributed axially at intervals, and sealing rings are respectively arranged on the two radial grooves.

[0006] Furthermore, the sealing ring adopts an O-ring.

[0007] Furthermore, at least two coaxially distributed annular grooves are arranged on the lower end surface of the oil cylinder body, and a sealing lip that is convex-concavely matched with the at least two annular grooves is arranged in the at least two annular grooves.

[0008] Furthermore, the cross section of the annular groove is rectangular, trapezoidal or V-shaped.

[0009] Furthermore, the cross section of the sealing lip is concave, W-shaped or concavo-convex.

[0010] Furthermore, the sealing lip is provided with a concave arc bottom surface with an arc-shaped cross section and in contact with the inner cavity bottom surface of the flying shear drum, and the middle cavity and the inner and outer side surfaces.

[0011] Furthermore, an elastic rib with an arc-shaped cross section is arranged inside the concave arc bottom surface of the sealing lip.

[0012] The invention also provides a sealing modification method for a hot coil head cutting flying shear blade locking oil cylinder, wherein two radial grooves are processed on the oil cylinder body axial neck on the flying shear drum, and sealing rings are installed in the two radial grooves.

[0013] Preferably, at least two coaxially distributed annular grooves are provided on the lower end surface of the oil cylinder body, and a sealing lip which is matched with the at least two annular grooves in a convex-concave manner is installed in the at least two annular grooves.

[0014] The beneficial effects of the present invention are as follows: the sealing modification structure of the hot coil cutting flying shear blade locking oil cylinder provided by the present invention completely solves the leakage problem after the locking oil cylinder is installed in the past, and can adapt to repeated disassembly and installation pressure testing, and improves the efficiency of the cutting blade replacement and installation, and also improves the working efficiency of the cutting flying shear. The modification is simple and feasible, and is easy to promote and apply.

[0015] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0017] Figure 1 It is a schematic diagram of the installation of the sealing modification structure of the hot coil cutting head flying shear blade locking oil cylinder of the present invention;

[0018] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0019] Figure 3 for Figure 1 Another structural schematic diagram of part A of FIG.

[0020] Reference numerals: flying shear drum 1, oil cylinder body 2, radial groove 3, sealing ring 4, sealing lip 5, elastic rib 6. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0022] like Figure 1-2As shown, a sealing modification structure of the shear blade locking cylinder of a hot coil shearing shear in this embodiment is redesigned according to the sealing contact point of the shear blade locking cylinder of the shearing shear. It includes a cylinder body 2 arranged on the shear drum 1, in order to improve the service life of the shear blade locking cylinder of the shearing shear, improve the sealing performance of the O-ring installed in the locking cylinder, and improve the working efficiency of the shearing shear, reduce the downtime, and reduce quality accidents. The axial neck of the cylinder body 2 is provided with two radial grooves 3 distributed axially, and the two radial grooves 3 are respectively provided with sealing rings 4, and the sealing rings 4 are O-rings. That is, the locking cylinder installation part is processed, and the original O-ring installation part is processed into two O-ring installation parts, and the double seal can effectively guarantee its sealing performance and solve some missing problems in the installation process. Therefore, during the installation process, the front pair of O-rings are subjected to external force factors or scratched by the edges and corners of the installation part, and the rear pair of O-rings can also play a sealing protection operation, thereby improving the sealing performance.

[0023] like Figure 3 As shown, in another embodiment, two coaxially distributed annular grooves are arranged on the lower end surface of the oil cylinder body 2, and an integrated sealing lip 5 covering the two annular grooves and cooperating with them in a convex-concave manner is also included. The cross section of the sealing lip 5 adopts a concave structure, that is, its inner and outer edges are respectively stuck in the two annular grooves, and the sealing lip 5 is arranged on the side away from the lower end surface of the oil cylinder body 2. The concave arc bottom surface with a cross section is arc-shaped and has a middle cavity and inner and outer side surfaces in contact with the bottom surface of the inner cavity of the flying shear drum 1. When the sealing ring 4 of the oil cylinder body shaft neck is damaged, the sealing lip 5 effectively blocks the oil leaking from the pipeline under the action of the concave arc bottom surface and the convex-concave matching surface, and completely prevents the problem of oil leakage. The middle cavity formed between the concave arc bottom surface of the sealing lip and the bottom surface of the inner cavity of the flying shear drum can also have the function of buffering the leaked oil, so as to achieve the purpose of delaying leakage. Of course, in different embodiments, the annular grooves can be arranged in more than three, and the cross section of the annular groove can be one of rectangular, trapezoidal or V-shaped, and the cross section of the sealing lip can also be W-shaped or concave-convex.

[0024] In another embodiment, an elastic rib 6 with an arc-shaped cross section is arranged inside the concave arc bottom surface of the sealing lip 5. The elastic rib can be compressed after the sealing lip is installed and compressed, thereby providing a force for the concave arc bottom surface of the sealing lip, so that it can better contact with the bottom surface of the inner cavity of the flying shear drum, so as to achieve a better sealing effect. When the oil cylinder body 2 is constantly shaken in the flying shear drum 1, the back pressure provided by the elastic rib makes the concave arc bottom surface of the sealing lip closely contact with the bottom surface of the inner cavity of the flying shear drum, and the sealing lip will not be damaged by the shaking.

[0025] The sealing modification method of the hot coil head cutting flying shear blade locking oil cylinder in this embodiment includes processing two radial grooves 3 on the axial neck of the oil cylinder body 2 on the flying shear drum 1, opening at least two coaxially distributed annular grooves on the lower end surface of the oil cylinder body 2, and installing sealing rings 4 in both radial grooves 3, and installing a sealing lip 5 that matches the convex and concave parts in the at least two annular grooves. The two sealing rings form a secondary seal on the axial neck of the oil cylinder body, and the sealing lip forms a tertiary seal. This completely solves the leakage problem that occurs after the locking oil cylinder is installed in the past.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A sealing modification structure for a hot coil cutting flying shear blade locking oil cylinder, comprising an oil cylinder body (2) arranged on a flying shear drum (1), characterized in that: The shaft neck of the oil cylinder body is provided with two radial grooves (3) distributed axially at intervals, and the two radial grooves are respectively provided with sealing rings (4); the lower end surface of the oil cylinder body is provided with at least two coaxially distributed annular grooves, and a sealing lip (5) is provided in the at least two annular grooves to match the annular grooves convexly and concavely, and the cross section of the sealing lip is W-shaped; the side of the sealing lip away from the lower end surface of the oil cylinder body is provided with a concave bottom surface with an arc-shaped cross section and in contact with the bottom surface of the inner cavity of the flying shear drum, and an elastic rib (6) with an arc-shaped cross section is provided inside the concave bottom surface of the sealing lip.

2. The sealing modification structure of the hot coil cutting flying shear blade locking oil cylinder according to claim 1 is characterized in that: The sealing ring is an O-ring.

3. The sealing modification structure of the hot coil cutting flying shear blade locking oil cylinder according to claim 1 is characterized in that: The cross section of the annular groove is rectangular, trapezoidal or V-shaped.

4. A method for modifying the seal of a hot coil cutting flying shear blade locking cylinder, characterized in that: Based on the hot coil head shear blade locking cylinder seal modification structure described in any one of claims 1 to 3, the modification method comprises: processing two radial grooves (3) on the shaft neck of the cylinder body (2) on the shear drum (1), and installing sealing rings (4) in both radial grooves, opening at least two coaxially distributed annular grooves on the lower end surface of the cylinder body, and installing a sealing lip (5) with elastic ribs (6) that fit the at least two annular grooves in a convex-concave manner.

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