Hot rolling device

Abstract

The utility model relates to the technical field of hot rolling, and provides a hot rolling device. The hot rolling device comprises a hot rolling unit and a conveying unit, the hot rolling unit comprises hot rolling elements and a hot rolling unit shell, the hot rolling elements are rotating bodies, the hot rolling elements are rotationally installed in the hot rolling unit shell, and two sets of hot rolling elements are distributed in the hot rolling unit shell. The hot rolling elements are rotationally connected in the hot rolling unit shell in parallel, an angle of 45 degrees is formed between the hot rolling elements and the moving direction of a pipe, the conveying unit comprises conveying blocks and a conveying belt, the conveying blocks are evenly distributed on the conveying belt, and positioning grooves are formed in the conveying blocks. According to the hot rolling device, the roundness error caused by abrasion can be transferred to the diameter size of the pipe, the roundness of the pipe is guaranteed to the maximum degree, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot rolling, in particular to a hot rolling device. Background Art

[0002] Hot rolling refers to rolling above the crystallization temperature. Hot rolling has the characteristics of low energy consumption and good plastic processing, and is widely used in many fields.

[0003] Common periodic rolling mills mostly use two rolling wheels meshing for rolling, and the rolling effect is relatively stable in the initial stage; but as time goes by, the two rolling wheels will wear, resulting in a decrease in the roundness of the rolled pipe, affecting the quality of the product. Utility Model Content

[0004] The utility model aims to provide a hot rolling device, which can perform rotary processing, transfer the roundness error caused by wear to the diameter size of the pipe, and ensure the roundness of the pipe to the greatest extent. By adjusting the spacing of the hot rolling elements, the diameter size accuracy of the pipe can be controlled, thereby improving the quality of the product.

[0005] The utility model provides a hot rolling device, comprising:

[0006] A hot rolling unit, the hot rolling unit comprising a hot rolling element and a hot rolling unit shell, the hot rolling element being a rotating body, the hot rolling element having a cross section through a rotating axis as follows: a side edge being an arc concave inward, and upper and lower ends being straight lines, the hot rolling element being rotatably mounted in the hot rolling unit shell, two groups of the hot rolling elements being distributed in the hot rolling unit shell, the hot rolling elements in the first group being rotatably connected in parallel in the hot rolling unit shell, the distribution direction of the hot rolling elements in the first group being positive 45° to the movement direction of the pipe, the hot rolling elements in the second group being rotatably connected in parallel in the hot rolling unit shell, the distribution direction of the hot rolling elements in the second group being negative 45° to the movement direction of the pipe, and the projections of the hot rolling elements in the first group and the hot rolling elements in the second group in the vertical direction being 90°;

[0007] The conveying unit comprises a conveying block and a conveying belt. The conveying block is evenly fixed on the conveying belt, and a positioning groove is provided on the conveying block.

[0008] Preferably, wheels are installed on both sides of the hot rolling unit housing.

[0009] Preferably, all hot rolling elements in the hot rolling unit have the same rotational speed, and the hot rolling elements in the first group and the hot rolling elements in the second group rotate in opposite directions.

[0010] Preferably, the conveying unit further comprises a rotor, each conveying block is rotatably connected to the rotor, and the rotors are evenly distributed in the positioning grooves.

[0011] Preferably, the rotor is a bar rotor, and the rotation axis of the rotor is parallel to the center line of the tube.

[0012] Preferably, the conveying unit further comprises a limit frame, and the limit frame is located above the conveying block.

[0013] Preferably, the length of the conveying unit is greater than the length of a single pipe.

[0014] Preferably, the hot rolling device comprises a precision positioning block, and the hot rolling element is mounted on the hot rolling unit housing via the precision positioning block.

[0015] Preferably, the hot rolling device further comprises a cooling element, wherein the cooling element is located at the outlet of the hot rolling unit and the cooling element is fixedly connected to the hot rolling unit housing.

[0016] Preferably, the hot rolling device further comprises a heater, which is located in front of the conveying unit and is used to heat the pipe that will enter the conveying unit.

[0017] The technical solution of the utility model causes the pipe to rotate during processing and performs rotational processing through the design of the working angle and shape of the hot-rolled element, and transfers the roundness error caused by wear to the diameter size of the pipe, thereby ensuring the roundness of the pipe to the greatest extent. The diameter size accuracy of the pipe can be controlled by adjusting the spacing of the hot-rolled elements, thereby improving the quality of the product. The design of the transmission unit ensures that the pipe will not separate from the transmission unit due to rotation, and at the same time realizes the applicability of the transmission unit to rotating pipes and non-rotating pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the hot rolling device of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of the hot rolling device of the utility model;

[0021] Figure 3 for Figure 1A schematic cross-sectional view of a hot rolling unit in a hot rolling device;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure of the conveying unit in the hot rolling device;

[0023] Figure 5 for Figure 1 A schematic diagram of the structure of the conveying block in the hot rolling device;

[0024] Description of reference numerals:

[0025] 1. Hot rolling unit; 11. Hot rolling element; 12. Hot rolling unit housing; 121. Wheel; 2. Conveying unit; 21. Conveying block; 211. Positioning groove; 22. Conveying belt; 23. Rotor; 24. Limiting frame; 3. Cooling fan; 4. Heater. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Combination Figures 1 to 5 As shown, a hot rolling device provided by the utility model includes a hot rolling unit 1 and a conveying unit 2.

[0030] Combination Figures 1 to 5 As shown, the hot rolling unit 1 includes a hot rolling element 11 and a hot rolling unit shell 12, the hot rolling element 11 is a rotating body, and the cross section of the hot rolling element 11 passing through the rotating axis is as follows: the side is an arc concave inward, and the upper and lower ends are straight lines, the hot rolling element 11 is rotatably installed in the hot rolling unit shell 12, and two groups of the hot rolling elements 11 are distributed in the hot rolling unit shell 12, the hot rolling elements 11 in the first group are connected to the hot rolling unit shell 12 in parallel, and the distribution direction of the hot rolling elements 11 in the first group is positive 45° to the movement direction of the pipe, the hot rolling elements 11 in the second group are connected to the hot rolling unit shell 12 in parallel, and the distribution direction of the hot rolling elements 11 in the second group is negative 45° to the movement direction of the pipe, and the hot rolling elements 11 in the first group are connected to the hot rolling unit shell 12 in parallel, and the distribution direction of the hot rolling elements 11 in the second group is negative 45° to the movement direction of the pipe, and the hot rolling elements 11 in the first group are connected to the hot rolling unit shell 12 in parallel, and the distribution direction of the hot rolling elements 11 in the second group is negative 45° to the movement direction of the pipe. The projections of the rolled element 11 and the hot rolled element 11 in the second group in the vertical direction are 90°; the conveying unit 2 includes a conveying block 21 and a conveyor belt 22, the conveying block 21 is evenly fixed on the conveyor belt 22, and a positioning groove 211 is provided on the conveying block 21. The working angle and the shape of the hot rolled element are designed to rotate the pipe in the processing process, and rotational processing is performed, and the error of the roundness caused by wear is transferred to the diameter size of the pipe, thereby ensuring the roundness of the pipe to the greatest extent. The diameter size accuracy of the pipe can be controlled by adjusting the spacing of the hot rolled elements, thereby improving the quality of the product. The design of the conveying unit ensures that the pipe will not separate from the conveying unit due to rotation, and at the same time realizes the applicability of the conveying unit to rotating pipes and non-rotating pipes.

[0031] In some embodiments, in combination Figures 1 to 3As shown, wheels are installed on both sides of the hot rolling unit housing, and the hot rolling unit 1 can reciprocate through the wheels 121 to achieve periodic rolling of pipes.

[0032] In some embodiments, in combination Figures 1 to 3 As shown, the rotation speeds of all the hot rolling elements 11 in the hot rolling unit 1 are equal, and the hot rolling elements 11 in the first group and the hot rolling elements 11 in the second group rotate in opposite directions. The equal rotation speeds of the hot rolling elements 11 can ensure that the force on the pipe is uniform to improve the roundness of the product, and the hot rolling elements 11 in the first group and the hot rolling elements 11 in the second group rotate in opposite directions, so that the force direction of the hot rolling elements 11 on the pipe in the direction of movement of the pipe can be consistent, thereby preventing the pipe from being stuck in the hot rolling unit due to force problems. The rotation of the hot rolling elements 11 is controllable, so that the rolling effect can be ensured by changing the rotation speed of the hot rolling elements 11 when the pipe material changes, and at the same time, some basic conditions are provided for realizing periodic rolling of pipes.

[0033] In some embodiments, in combination Figures 4 to 5 As shown, the conveying unit 2 also includes a rotor 23, and each conveying block 21 is rotatably connected to the rotor 23. The rotor 23 is evenly distributed in the positioning groove 211. The design of the rotor 23 can ensure that the pipe stays stably in the positioning groove 211 on the conveying block 21 when one end of the pipe enters the hot rolling unit 1 and the other end is still on the conveying unit 2, thereby ensuring the conveying stability of the conveying unit 2.

[0034] In some embodiments, in combination Figures 4 to 5 As shown, the rotor is a bar rotor, and the rotation axis of the rotor is parallel to the center line of the pipe. The restriction on the rotation direction of the rotor 23 avoids the possibility of invalid movement of the conveying unit 2, that is, the movement of the rotor 23 and the movement of the conveyor belt 22 offset each other, thereby ensuring the conveying stability of the conveying unit 2.

[0035] In some embodiments, in combination Figure 4 As shown, the conveying unit 2 also includes a limit frame 24, and the limit frame 24 is located above the conveying block 21. By adjusting the height of the limit frame 24, the normal operation of the conveying unit 2 can be ensured while effectively preventing the pipe from escaping from the conveying unit 2. At the same time, adjusting the height of the limit frame 24 can make the conveying unit 2 adapt to pipes of different sizes.

[0036] In some embodiments, in combination Figure 1 , Figure 2 , Figure 4As shown, the length of the conveying unit is greater than the length of a single tube. Limiting the length of the conveying unit 2 can avoid the situation where one end of the tube is still in the heater while the other end has entered the hot rolling unit and started to rotate, thereby avoiding accidents.

[0037] In some embodiments, in combination Figures 1 to 3 As shown, the hot rolling device includes a precision positioning block, and the hot rolling element 11 is installed on the hot rolling unit housing 12 through the precision positioning block. The spacing between the hot rolling elements 11 can be adjusted through the precision positioning block to achieve strict control of the dimensional accuracy of the product.

[0038] In some embodiments, in combination Figure 1 , Figure 2 As shown, the hot rolling device also includes a cooling fan 3, which is located at the outlet of the hot rolling unit 1. The cooling fan 3 is fixedly connected to the hot rolling unit shell 12. The rolled product is cooled by the cooling fan 3, which can effectively ensure the cooling effect and indirectly improve the efficiency of the hot rolling device.

[0039] In some embodiments, in combination Figure 1 , Figure 2 As shown, the hot rolling device further includes a heater 4, which is located in front of the conveying unit 2. The heater heats the pipes that will enter the conveying unit. The heater 4 heats the pipes to provide a temperature basis for the hot rolling process.

[0040] Working process: the pipe heated by the heater 4 enters the conveying unit 2; the pipe will fall into the positioning groove 211 on the conveying block 21 in the conveying unit 2, and the conveying block 21 starts to move under the drive of the conveyor belt 22, and conveys the pipe to the hot rolling unit 1; after entering the hot rolling unit 1, the pipe will contact the hot rolling element 11, and the hot rolling element 11 starts to roll the pipe and starts to drive the pipe to rotate. At this time, the rotation of the part of the pipe still located in the conveying unit 2 will be offset by the rotor 23 located in the positioning groove 211, and with the help of the limit frame 24, the pipe is ensured to rotate stably in the positioning groove 211; when the pipe rolled by the hot rolling unit 1 moves out of the hot rolling unit 1, it will be cooled by the cold air fan 3 located at the outlet of the hot rolling unit 1. After the pipe cooled by the cold air fan 3 gradually moves out of the hot rolling unit 1, its external dimensions and other characteristics are determined, and the rolling process ends.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A hot rolling device, characterized in that: include: A hot rolling unit (1), the hot rolling unit (1) comprising a hot rolling element (11) and a hot rolling unit housing (12), the hot rolling element (11) being a rotating body, the hot rolling element (11) having a cross section passing through a rotating axis as follows: a side edge being an arc line concave inwards, and upper and lower ends being straight lines, the hot rolling element (11) being rotatably mounted in the hot rolling unit housing (12), two groups of the hot rolling elements (11) being distributed in the hot rolling unit housing (12), the hot rolling elements (11) in the first group being parallel to each other. The hot rolling elements (11) in the first group are connected to the hot rolling unit housing (12) in a rotational manner, the distribution direction of the hot rolling elements (11) in the first group and the movement direction of the tube are positive 45 degrees, the hot rolling elements (11) in the second group are connected to the hot rolling unit housing (12) in a rotational manner in parallel, the distribution direction of the hot rolling elements (11) in the second group and the movement direction of the tube are negative 45 degrees, and the projections of the hot rolling elements (11) in the first group and the hot rolling elements (11) in the second group in the vertical direction are 90 degrees; A conveying unit (2), the conveying unit (2) comprising a conveying block (21) and a conveying belt (22), the conveying block (21) being evenly fixed on the conveying belt (22), and a positioning groove (211) being provided on the conveying block (21).

2. The hot rolling device according to claim 1, characterized in that: Wheels (121) are installed on both sides of the hot rolling unit housing (12).

3. The hot rolling device according to claim 1, characterized in that: The rotation speeds of all the hot rolling elements (11) in the hot rolling unit (1) are equal, and the hot rolling elements (11) in the first group and the hot rolling elements (11) in the second group rotate in opposite directions.

4. The hot rolling device according to claim 1, characterized in that: It also includes a rotor (23), each transmission block (21) is rotatably connected to the rotor (23), and the rotors (23) are evenly distributed in the positioning grooves (211).

5. The hot rolling device according to claim 4, characterized in that: The rotor (23) is a bar rotor, and the rotation axis of the rotor (23) is parallel to the center line of the pipe.

6. The hot rolling device according to claim 1, characterized in that: It also comprises a limit frame (24), wherein the limit frame (24) is located above the conveying block (21).

7. The hot rolling device according to claim 1, characterized in that: The length of the conveying unit (2) is greater than the length of a single pipe.

8. The hot rolling device according to claim 1, characterized in that: It also comprises a precision positioning block, and the hot rolling element (11) is mounted on the hot rolling unit housing (12) via the precision positioning block.

9. The hot rolling device according to claim 1, characterized in that: It also comprises a cooling fan (3), wherein the cooling fan (3) is located at the outlet of the hot rolling unit (1), and the cooling fan (3) is fixedly connected to the hot rolling unit housing (12).

10. The hot rolling device according to claim 1, characterized in that: It also comprises a heater (4), which is located in front of the conveying unit (2) and is used to heat the pipe that will enter the conveying unit (2).

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