A large plate rolling machine auxiliary rolling device

Abstract

The utility model discloses a kind of auxiliary coiling devices of large plate rolling machine, belong to metal plate processing equipment technical field, to solve the problem of "horn mouth" when drum-shaped upper roller plate rolling machine coiling ultra-wide thin plate;The device includes several annular roller sleeves, all roller sleeve outer diameter is consistent, inner diameter and drum-shaped upper roller corresponding axial position section size match;Positioning structure is set between roller sleeve, and is connected as a whole by fastening component and adheres upper roller surface.Plate rolling machine movable end is successively sleeved into roller sleeve during installation, after positioning, fastening, use, can make plate stress uniform during coiling, eliminate "horn mouth";When thick plate is coiled, it can restore the original state of equipment by removing reversely, its structure is simple, convenient to disassemble and install, manufacturing cost is low, without modifying existing equipment, can improve plate rolling precision and equipment applicability, reduce scrap rate, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of metal sheet processing equipment, specifically to an auxiliary rolling device for a large plate rolling machine. Background Technology

[0002] In the field of metal sheet processing equipment technology, large plate rolling machines are the core equipment for realizing the rolling and forming of metal sheets. Especially in the case of thick plate rolling, in order to counteract the deflection deformation caused by the upper roller after being subjected to force, the industry generally adopts a drum-shaped cross-section design with a diameter in the middle larger than the diameters at both ends as the upper roller structure of the plate rolling machine. This design can effectively ensure the dimensional accuracy of thick plate rolling and meet the needs of thick plate processing.

[0003] However, when this type of drum-shaped upper roller plate rolling machine is applied to the rolling of ultra-wide thin plates (ultra-wide thin plates specifically refer to plates whose width exceeds the conventional rolling width of the equipment, whose thickness is less than the minimum applicable thickness of the equipment, and whose thickness is usually one-fifth of the maximum rolling thickness of the equipment), the special cross-sectional structure of the drum-shaped upper roller will cause new technical problems: during the rolling process, the contact pressure between the middle area of ​​the plate and the drum-shaped upper roller is significantly greater than that between the two ends, causing the degree of curling in the middle area of ​​the plate to be much greater than that at the two ends, ultimately making the rolled tube present a "trumpet mouth" shape with a large diameter in the middle and a small diameter at both ends.

[0004] The occurrence of the "trumpet mouth" phenomenon not only directly damages the dimensional accuracy of rolled workpieces, leading to a significant increase in the defect rate, increasing raw material consumption and production costs, but also interferes with subsequent processing steps—such as subsequent welding and splicing processes, which require additional manpower and resources to correct dimensional deviations, seriously restricting the improvement of enterprise production efficiency and product quality stability.

[0005] To address the aforementioned issues, existing technologies primarily employ two improvement approaches: First, adding pads to both ends of the drum-shaped upper roller to alter the local pressure distribution by adjusting the pad thickness. However, this method has extremely poor adaptability; for ultra-wide thin plates of varying thicknesses and materials, the size and material of the pads require frequent changes, and manual adjustment of the pads makes it difficult to precisely control pressure uniformity, thus failing to consistently guarantee rolling accuracy. Second, configuring an additional small plate rolling machine with a matching width and suitability for thin plate rolling, specifically for ultra-wide thin plate processing. While this solution avoids the "flared end" problem, it requires companies to bear additional equipment purchase costs and occupies limited workshop production space. Furthermore, the subsequent maintenance and upkeep of the new equipment further increases operating costs, limiting its widespread application in actual production.

[0006] In summary, existing technologies cannot effectively solve the "trumpet mouth" problem when rolling ultra-wide thin plates on drum-shaped upper roller plate rolling machines without significantly increasing costs or affecting the original thick plate rolling function of the equipment. The industry urgently needs a simple, adaptable and cost-controllable technical solution to fill this technological gap. Utility Model Content

[0007] The purpose of this utility model is to provide an auxiliary rolling device for a large plate rolling machine. It has a simple structure, is easy to install and disassemble, has low manufacturing cost, does not require modification of existing equipment, can improve the rolling accuracy and equipment applicability, reduce scrap rate, and improve production efficiency.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary rolling device for a large plate rolling machine, comprising several annular roller sleeves adapted to the drum-shaped upper roller of the plate rolling machine, all of which have the same outer diameter, and whose inner diameter matches the cross-sectional dimensions of the corresponding axial position of the drum-shaped upper roller; the annular roller sleeves are provided with positioning structures and are connected as one unit by fastening components to fit against the surface of the drum-shaped upper roller, so that the pressure on the plate is uniform during the rolling process.

[0009] To further optimize this utility model, the following technical solutions may be preferred: Preferably, the annular roller sleeve includes an inner roller sleeve, a middle roller sleeve, and an outer roller sleeve, wherein the inner roller sleeve is a symmetrically divided upper roller sleeve and a lower roller sleeve.

[0010] Preferably, the positioning structure includes a positioning hole provided on the annular roller sleeve and a positioning pin adapted to the positioning hole, and adjacent annular roller sleeves are positioned by the positioning pin.

[0011] Preferably, the fastening component is a double-ended through bolt, which passes through all the annular roller sleeves and is then fastened by a nut.

[0012] Preferably, the inner wall diameter of the inner side roller sleeve is smaller than the inner wall diameter of the middle roller sleeve, and is adapted to the cross-sectional dimensions of both ends of the drum-shaped upper roller.

[0013] Preferably, the number of the annular roller sleeves is adapted to the length of the drum-shaped upper roller of the plate rolling machine.

[0014] The beneficial effects of this utility model are: (1) Accurately solve core technical problems and improve rolling accuracy: This utility model sets up an annular roller sleeve with the same outer diameter and an inner diameter that matches the axial position cross-sectional size of the drum-shaped upper roller. The roller sleeve is connected as a whole and attached to the surface of the upper roller by the positioning structure and fastening components. This can fundamentally eliminate the problem of "high pressure in the middle and low pressure at both ends" when the drum-shaped upper roller rolls ultra-wide thin plates. This makes the plate uniformly stressed, completely avoids the "flared mouth" phenomenon, significantly improves the dimensional accuracy of ultra-wide thin plate rolling, reduces scrap and rework caused by dimensional deviation, and reduces production costs.

[0015] (2) Enhance equipment versatility and expand the scope of application: No additional purchase of new equipment is required. By simply adding this auxiliary device, the drum-shaped upper roller plate rolling machine, which was originally only suitable for thick plate rolling, can achieve "full thickness coverage" rolling within the processing width allowed by the equipment. It can maintain the original thick plate rolling function (the factory state can be restored by removing the device) and accurately adapt to ultra-wide thin plate rolling operations, greatly improving the equipment's adaptability to plates of different thicknesses, effectively revitalizing the company's existing equipment resources, and avoiding equipment idleness and duplicate investment.

[0016] (3) Simple structure and easy operation, suitable for existing production scenarios: The device consists of an annular roller sleeve, positioning structure and fastening components. The structure is simple and the manufacturing cost is low. During installation, the roller sleeve only needs to be put into the moving end of the plate rolling machine in sequence and the positioning and fastening are completed. When dismantling, the operation can be reversed. The entire process does not require modification of the existing plate rolling machine, does not affect the original equipment layout of the workshop, and does not require additional investment in later maintenance costs. It is highly convenient to operate and can be quickly integrated into the existing production process of the enterprise to ensure production continuity. Attached Figure Description

[0017] Figure 1 A schematic diagram of the assembly of the drum-shaped upper roller auxiliary winding device; Figure 2 This is an exploded view of the auxiliary winding device structure; Figure 3 A schematic diagram showing the insertion direction of the drum-shaped upper roller winding auxiliary device.

[0018] Wherein: 1 - Inner side roller sleeve (upper); 2 - Inner side roller sleeve (lower); 3 - Middle roller sleeve; 4 - Outer side roller sleeve; 5 - Double-headed through bolt; 6 - Drum-shaped upper roller; 7 - Moving end of plate rolling machine; 8 - Fixed end of plate rolling machine; 9 - Positioning pin; 10 - Positioning hole; 11 - Nut. Detailed Implementation

[0019] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: like Figure 1-3 As shown, an auxiliary rolling device for a large plate rolling machine includes several annular roller sleeves adapted to the drum-shaped upper roller 6 of the plate rolling machine. All annular roller sleeves have the same outer diameter, and the inner diameter of the annular roller sleeves matches the cross-sectional dimensions of the corresponding axial position of the drum-shaped upper roller 6. The annular roller sleeves are provided with positioning structures and are connected as one piece by fastening components to fit tightly against the surface of the drum-shaped upper roller 6, ensuring that the contact area between the plate and the roller sleeve is subjected to uniform force during the rolling process, eliminating the "trumpet mouth" phenomenon from the structural root, and improving the rolling dimensional accuracy.

[0022] As a preferred embodiment, the annular roller sleeve includes an inner side roller sleeve (upper) 1, an inner side roller sleeve (lower) 2, a middle roller sleeve 3, and an outer side roller sleeve 4. The inner side roller sleeve (upper) 1 and the inner side roller sleeve (lower) 2 are symmetrically segmented structures. This design can avoid the assembly problem that the overall annular sleeve cannot be fitted into the moving end 7 of the plate rolling machine, and at the same time, it is compatible with the small cross-sectional dimensions at both ends of the drum-shaped upper roller 6, ensuring the stability of the end fit.

[0023] As a preferred embodiment, the positioning structure includes positioning holes 10 on the annular roller sleeve and positioning pins 9 that fit into the positioning holes 10. Adjacent annular roller sleeves are precisely positioned by inserting the positioning pins 9 into the positioning holes 10. This structure can quickly align the axes and end faces of each roller sleeve, prevent relative displacement of the roller sleeves during the rolling process, and ensure uniform force distribution.

[0024] As a preferred embodiment, the fastening component is a double-ended through bolt 5, which passes through all the annular roller sleeves and is then fastened by nuts 11. This design can lock the dispersed annular roller sleeves into a whole, ensuring that the roller sleeves fit tightly against the surface of the drum-shaped upper roller 6 and avoiding gaps caused by winding vibration.

[0025] As a preferred embodiment, the inner wall diameters of the upper inner roller sleeve 1 and the lower inner roller sleeve 2 are smaller than the inner wall diameter of the middle roller sleeve 3, and are precisely matched with the cross-sectional dimensions at both ends of the drum-shaped upper roller 6. This design allows each roller sleeve to fit perfectly with the corresponding position of the drum-shaped upper roller 6, while ensuring balanced stress across the entire material through a uniform outer diameter design.

[0026] As a preferred embodiment, the number of annular roller sleeves is adapted to the length of the drum-shaped upper roller 6 of the plate rolling machine. This design can be flexibly adapted to plate rolling machines with drum-shaped upper rollers of different specifications, expanding the versatility of the device and eliminating the need to design special auxiliary devices for different equipment.

[0027] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. These embodiments are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0028] Equipment assembly process: ①Preparation: Confirm that the plate rolling machine is stopped and powered off. Lay the movable end 7 of the plate rolling machine down to a position that facilitates the installation of the roller sleeve. Clean the oil stains, iron filings and other impurities from the surface of the drum-shaped upper roller 6 to ensure that the roller sleeve contact surface is clean and free of foreign objects.

[0029] ②Inner side roller sleeve installation: Take the symmetrically divided inner side roller sleeve (upper) 1 and inner side roller sleeve (lower) 2, and put them on from the corresponding installation positions at both ends of the drum-shaped upper roller 6 in the vertical direction, so that the inner wall of the two side roller sleeves is completely in contact with the cross-sections at both ends of the drum-shaped upper roller 6; align the positioning holes 10 on the two side roller sleeves, insert the positioning pins 9 to achieve preliminary positioning, and then fasten the two side roller sleeves together as one unit with bolts.

[0030] ③ Installation of middle roller sleeve and outer roller sleeve: From the moving end 7 of the plate rolling machine, install the middle roller sleeve 3 and outer roller sleeve 4 in sequence to the corresponding axial positions of the drum-shaped upper roller 6. For each roller sleeve installed, the positioning pin 9 is inserted into the positioning hole 10 of the adjacent roller sleeve to complete the positioning, ensuring that the axes of each roller sleeve are aligned and the end faces are in contact.

[0031] ④ Overall fastening: Insert the double-headed through bolt 5 through all the annular roller sleeves from the fixed end 8 of the plate rolling machine, and screw the nut 11 onto the bolt end on the movable end 7 of the plate rolling machine. Tighten the nut 11 evenly so that all the annular roller sleeves fit tightly against the surface of the drum-shaped upper roller 6 to form an integral structure and complete the assembly of the auxiliary device.

[0032] Roll making operation: ① Ultra-wide thin plate rolling: After assembly, return the moving end 7 of the plate rolling machine to the working position, start the equipment according to the conventional plate rolling machine operation procedure, and feed the ultra-wide thin plate into the rolling area. Since the outer diameter of each annular roller sleeve is consistent, the force is uniform when the plate contacts the roller sleeve, which can effectively avoid the "trumpet mouth" phenomenon and achieve high-precision rolling.

[0033] ② Thick plate rolling: When thick plates need to be rolled, first stop the machine and disconnect the power, lay down the moving end 7 of the plate rolling machine, unscrew the nut 11, pull out the double-headed through bolt 5, remove the outer roller sleeve 4 and the middle roller sleeve 3 in sequence, then remove the connecting bolt and positioning pin 9 of the inner roller sleeve (upper) 1 and the inner roller sleeve (lower) 2, remove the two inner roller sleeves, restore the plate rolling machine to its factory state, and then the thick plate rolling operation can be carried out.

[0034] Precautions: (1) When fitting the roller sleeves, ensure that the inner wall of each roller sleeve is fully matched with the corresponding axial section of the upper drum roller 6 to avoid gaps that could lead to uneven force. (2) When tightening the double-headed through bolts 5, apply force evenly to prevent excessive local pressure from causing deformation or poor fit of the roller sleeves. (3) The positioning pins 9 and positioning holes 10 must be precisely matched to ensure that the roller sleeves do not undergo relative displacement during the rolling process, thus ensuring rolling accuracy.

[0035] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An auxiliary rolling device for a large plate rolling machine, characterized in that, It includes several annular roller sleeves adapted to the drum-shaped upper roller of a plate rolling machine. All the annular roller sleeves have the same outer diameter, and the inner diameter of the annular roller sleeves matches the cross-sectional dimensions of the corresponding axial position of the drum-shaped upper roller. The annular roller sleeves are provided with positioning structures and are connected as one piece by fastening components to fit against the surface of the drum-shaped upper roller, so that the pressure on the plate is uniform during the rolling process.

2. The auxiliary rolling device for a large plate rolling machine according to claim 1, characterized in that, The annular roller sleeve includes an inner side roller sleeve, a middle roller sleeve, and an outer side roller sleeve. The inner side roller sleeve consists of an upper roller sleeve and a lower roller sleeve that are symmetrically divided into segments.

3. The auxiliary rolling device for a large plate rolling machine according to claim 2, characterized in that, The positioning structure includes a positioning hole provided on the annular roller sleeve and a positioning pin adapted to the positioning hole, and adjacent annular roller sleeves are positioned by the positioning pin.

4. The auxiliary rolling device for a large plate rolling machine according to claim 1, characterized in that, The fastening component is a double-ended through bolt, which passes through all the annular roller sleeves and is then fastened by a nut.

5. The auxiliary rolling device for a large plate rolling machine according to claim 2, characterized in that, The inner wall diameter of the inner side roller sleeve is smaller than that of the middle roller sleeve, and it is adapted to the cross-sectional dimensions of both ends of the drum-shaped upper roller.

6. The auxiliary rolling device for a large plate rolling machine according to claim 1, characterized in that, The number of annular roller sleeves is adapted to the length of the drum-shaped upper roller of the plate rolling machine.

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