Quick roll changing mechanism for flat roll

Abstract

The utility model discloses a quick roll changing mechanism for a flat roll, which comprises a base, two parallel memorial archways are fixed on the base along the vertical direction, open slots in the vertical direction are arranged in the memorial archways, shaft system pull rods are arranged in the open slots, two roll shaft systems in the horizontal direction are erected between the two shaft system pull rods, and the two roll shaft systems are fixed on the base along the vertical direction. The two roller shaft systems are distributed up and down; a rotating shaft in the vertical direction is fixed to the top of the memorial archway, an upper cover is rotationally connected to the rotating shaft, the upper cover is connected to the memorial archway through a swing bolt, and the upper cover can rotate on the memorial archway in the horizontal direction through the rotating shaft; according to the quick roll changing mechanism for the flat roll, the roll changing efficiency of a high-frequency welded pipe unit can be effectively improved, the use frequency of a workshop crane is reduced, the number of roll changing personnel of one unit is reduced, the production efficiency of a production line is improved for customers, and the requirements of the unit personnel and hardware such as the crane are reduced.

Description

Technical Field

[0001] The utility model relates to the field of steel processing equipment, in particular to a flat roll quick roll changing structure in a welded pipe unit. Background Art

[0002] At present, most welded pipe units in the industry adopt the ordinary W forming process. When the round pipe high-frequency straight seam welded pipe unit of this process produces products of different specifications, roll changing work needs to be carried out. The whole unit includes a rough forming section, a fine forming section, a welding and extrusion section, and a sizing and straightening section. Because a traveling crane is needed for roll changing (especially for large-diameter welded pipe units), generally, manufacturers configure roll changing teams according to the number of traveling cranes in the workshop. It will take a lot of time, manpower and material resources to carry out roll changing operations at all workstations; according to the actual data of the user site of our company, in the case of two roll changing teams, it takes more than 12 hours for a small unit to change rolls once, and at least more than 24 hours for a large unit to complete a roll changing operation once; combined with the above introduction, reducing the roll changing time to improve the production line efficiency is a problem faced by the whole welded pipe industry at present. Summary of the Utility Model

[0003] In order to solve the above problems, the utility model provides a flat roll quick roll changing mechanism that can reduce the roll changing time and improve the roll changing efficiency.

[0004] In order to achieve the above purpose, the utility model provides a flat roll quick roll changing mechanism, which includes a base. Two parallel and vertical archways are fixed on the base. An opening groove in the vertical direction is provided in the archway. A shaft system pull rod is arranged in the opening groove. Two horizontal roll shafts are arranged between the two shaft system pull rods and are distributed up and down; a vertical rotating shaft is fixed at the top of the archway, and an upper cover is rotatably connected to the rotating shaft. The upper cover is connected to the archway through a turnbuckle bolt, and the upper cover can rotate horizontally on the archway through the rotating shaft.

[0005] Optionally, one end of the turnbuckle bolt is fixed on one of the archways, and the other end is fixed on the other archway through a nut.

[0006] Optionally, the roll shaft system includes a roll shaft. One end of the roll shaft is connected with a driving motor, and a roll is connected to the roll shaft.

[0007] Optionally, the roll is detachably connected to the roll shaft.

[0008] Optionally, the roll is cylindrical, and an annular groove is provided in the middle along the circumferential direction.

[0009] Optionally, a lifting ring is arranged on the roll shaft of at least one of the two roll shaft systems.

[0010] Optionally, a scale is fixed to the side of the memorial archway, and a pointer pointing to the scale is provided on one of the roll shafts.

[0011] The beneficial effects of the present utility model compared with the prior art are as follows: The flat roll quick roll change mechanism can effectively improve the roll change efficiency of the high-frequency welded pipe unit, reduce the usage frequency of the workshop traveling crane, reduce the number of roll change personnel for one unit, improve the production efficiency of the production line for customers, reduce the demand for unit personnel and the demand for hardware such as traveling cranes, thereby improving the production capacity of the production line and reducing the investment in the production line. Brief Description of the Drawings

[0012] Figure 1 is the front view of a flat roll quick roll change mechanism provided by the present utility model;

[0013] Figure 2 is the side view of a flat roll quick roll change mechanism provided by the present utility model.

[0014] Figure 3 —5 is the roll change flow chart of a flat roll quick roll change mechanism provided by the present utility model. Detailed Embodiments

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] As shown in this application and the claims, unless the context clearly indicates an exceptional situation, words such as "a", "an", "one" and / or "the" are not specifically singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0017] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: Similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0018] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above terms have no special meanings, and thus cannot be construed as limiting the scope of protection of the present application. In addition, although the terms used in the present application are selected from well-known and commonly used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant according to his or her judgment, and their detailed meanings are described in the relevant parts of the present description. In addition, it is required to understand the present application not only through the actual terms used, but also through the meanings implied by each term.

[0019] Referring to Figure 1 and Figure 2 , this embodiment provides a flat roll quick roll-changing mechanism, which includes a base 1. Two mutually parallel pylons 2 are fixedly arranged on the base 1 in the vertical direction. Vertical opening grooves (not shown in the figure) are provided in both of the two pylons 2. A shaft system pull rod 3 is arranged in the opening groove. Two horizontal roll shafts 5 are arranged between the two shaft system pull rods 3, and the two roll shafts 5 are distributed vertically.

[0020] In this embodiment, the roll shaft system 5 includes a roll shaft 51. One end of the roll shaft 51 is connected with a driving motor 52, and a roll 53 is connected to the roll shaft 51.

[0021] In this embodiment, the roll 53 is detachably connected to the roll shaft 51 through a nut. When it is necessary to change the size of the roll 53, the entire roll shaft system 5 can be disassembled, and then the roll 53 can be disassembled.

[0022] In this embodiment, the roll 53 is cylindrical, and an annular groove 531 is provided in the middle along the circumferential direction. In this way, two rolls can form a cylindrical shape to extrude cylindrical steel.

[0023] In this embodiment, a vertical rotating shaft 21 is fixed to the top of the memorial archway 2. A top cover 6 is rotatably connected to the rotating shaft 21. The top cover 6 is connected to the corresponding memorial archway 2 through a loose-joint bolt 7. The top cover 6 can rotate horizontally on the memorial archway 2 through the rotating shaft 21.

[0024] Specifically, one end of the loose-joint bolt 7 is fixed to one of the memorial archways 2, and the other end is fixed to the other memorial archway 2 through a nut 4. When disassembly is required, loosen the nut 4 to open the loose-joint bolt 7, so that the shaft system tie rod 3 can be taken out. By taking out the shaft system tie rod 3, the roll shaft system 5 can be taken out, realizing roll change.

[0025] In this embodiment, at least one of the roll shafts of the two roll shaft systems 5 is provided with a lifting ring (not shown in the figure). The lifting ring can be connected by a lifting tool to realize disassembly and assembly, which is convenient, labor-saving, does not require bundling, and is firm and stable.

[0026] In some other embodiments, a scale 8 is fixed to the side of the memorial archway 2. A pointer 9 pointing to the scale is provided on one of the roll shaft systems. The distance between the rolls is accurately controlled through the corresponding relationship between the pointer 9 and the scale 8 to achieve precise adjustment.

[0027] Refer to Figure 3-5 The working process of the flat roll quick roll change mechanism provided in this embodiment is as follows: ① Open the unilateral loose-joint bolt 7; ② Then loosen the rotating shaft locking nut 4; ③ Then open the top cover 6 around the rotating shaft 21 to create space for the roll shaft system 5 to be lifted out; ④ Then connect the lifting ring on the roll shaft system with a lifting tool; ⑤ Then lift out the upper and lower shaft systems 5 as a whole for roll change; then hoist the replaced shaft system as a whole and place it in the memorial archway 2; finally, rotate the top cover 6 back to its original position and lock the nut 4 to complete the roll change operation.

[0028] The use of this device can effectively improve the roll change efficiency of the high-frequency welded pipe unit, reduce the use frequency of the workshop overhead crane, and reduce the number of roll change personnel for one unit; improve the production efficiency of the production line for customers, reduce the demand for unit personnel and the demand for hardware such as overhead cranes; thereby improving the production capacity of the production line and reducing the investment in the production line. According to customer feedback, after using the quick roll change structure, it can save half of the roll change time compared with the ordinary structure.

[0029] The above is only the implementation mode of the present invention, and it does not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A flat roll quick roll change mechanism, characterized in that: It includes a base, on which two mutually parallel archways are fixed in the vertical direction. An opening groove in the vertical direction is provided in the archway, and a shaft system tie rod is arranged in the opening groove. Two horizontal rolling mill shaft systems are arranged between the two shaft system tie rods, and the two rolling mill shaft systems are distributed vertically; a rotating shaft in the vertical direction is fixed at the top of the archway, and an upper cover is rotatably connected to the rotating shaft. The upper cover is connected to the archway by a loose joint bolt, and the upper cover can rotate horizontally on the archway through the rotating shaft.

2. The flat roll quick roll change mechanism according to claim 1, characterized in that: One end of the loose joint bolt is fixed on one of the archways, and the other end is fixed on the other archway by a nut.

3. The flat roll quick roll change mechanism according to claim 1, characterized in that: The rolling mill shaft system includes a rolling mill shaft, one end of the rolling mill shaft is connected to a driving motor, and a rolling mill is connected to the rolling mill shaft.

4. The flat roll quick roll change mechanism according to claim 1, characterized in that: The rolling mill is detachably connected to the rolling mill shaft.

5. The flat roll quick roll change mechanism according to claim 3 or 4, characterized in that: The rolling mill is cylindrical, and an annular groove is provided in the middle along the circumferential direction.

6. The flat roll quick roll change mechanism according to claim 1, characterized in that: A lifting ring is arranged on the rolling mill shaft of at least one of the two rolling mill shaft systems.

7. The flat roll quick roll change mechanism according to claim 1, characterized in that: A scale is fixed on the side of the archway, and a pointer pointing to the scale is arranged on one of the rolling mill shaft systems.

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