Hot straightening machine
By setting a cooling chamber inside the thermal straightening roller and circulating cooling water, the problem of high-temperature deformation and damage of the straightening roller is solved, and the stable operation of the equipment is achieved.
Patent Information
- Application Number
- CN202422199048.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The straightening rollers of the thermal straightener are prone to deform and damage at high temperatures, and the prior art is difficult to effectively cool, resulting in equipment failure.
A cooling chamber is set inside the thermal straightening roller, and a stainless steel water injection pipe is connected to the embedded rotary joint through a high-temperature-resistant sealing component to realize cooling water circulation and avoid excessive deformation of the outer peripheral surface of the straightening roller.
It effectively avoids damage caused by high-temperature deformation of the straightening roller and ensures that the equipment continues to work normally.
Smart Images
Figure CN223128990U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rolling equipment, and particularly relates to a hot straightening machine. Background Art
[0002] A hot straightening machine is a device for straightening metal materials in a high-temperature state. By heating the metal materials to a certain temperature to soften them, and then straightening them through a straightening mechanism to eliminate deformation defects such as bending and twisting of the materials. When straightening some metal plates with a relatively high yield strength, such as titanium alloy plates and spring steel plates, the plates enter the hot straightening machine for straightening after being processed by an annealing furnace and a cooling furnace. When the plates enter the hot straightening machine, the highest temperature can still reach 500°C. After the straightening rolls of the straightening mechanism work continuously for a period of time, due to the high temperature of the plates, the temperature of the outer peripheral surface of the straightening rolls will become higher and higher. When the temperature exceeds the temperature that the straightening rolls can withstand, the straightening rolls will be deformed and damaged. Therefore, it is necessary to cool down the straightening rolls of the hot straightening machine to ensure that the straightening rolls can continue to work normally. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a hot straightening machine in which cooling water circulates inside the straightening rolls, avoiding deformation and damage of the straightening rolls caused by high temperature.
[0004] To solve the above technical problem, the utility model adopts the following technical solutions:
[0005] A hot straightening machine includes a frame and a hot straightening roll assembly, a back pressure roll assembly and a pinch roll assembly arranged on the frame; the hot straightening roll assembly includes two sets of parallel hot straightening rolls arranged up and down. A cooling cavity is arranged inside the hot straightening rolls along the length direction. One end of the cooling cavity is provided with a first high-temperature resistant sealing assembly, and the other end is provided with a buried rotary joint and a second high-temperature resistant sealing assembly. The buried rotary joint is installed at the end of the cooling cavity through the second high-temperature resistant sealing assembly. The outer end of the buried rotary joint is provided with a water inlet interface and a water outlet interface. A stainless steel water injection pipe is coaxially arranged inside the cooling cavity. The outer diameter of the stainless steel water injection pipe is smaller than the inner diameter of the cooling cavity. The water outlet end of the stainless steel water injection pipe is inserted into the first high-temperature resistant sealing assembly, and water outlet holes are arranged on the side wall of the water outlet end of the stainless steel water injection pipe. The water inlet end of the stainless steel water injection pipe is communicated with the buried rotary joint; the back pressure roll assembly is arranged parallel to the upper and lower sides of the hot straightening roll assembly; the pinch roll assembly is arranged parallel to the feeding side and the discharging side of the hot straightening roll assembly.
[0006] In some embodiments, the first high-temperature resistant sealing assembly includes a water injection pipe head seat and a first O-ring. An annular groove for installing the first O-ring is arranged on the outer wall of the water injection pipe head seat. The water injection pipe head seat is hermetically inserted into the cooling cavity through the first O-ring. A jack for inserting the stainless steel water injection pipe is arranged at the inner end of the water injection pipe head seat.
[0007] In some embodiments, the second high-temperature resistant sealing assembly includes a rotary joint flange and a second O-ring seal. An annular groove for installing the second O-ring seal is provided on the inner wall at one end of the rotary joint flange. The rotary joint flange is sleeved on the end of the hot straightening roller through the second O-ring seal in a sealed manner. The embedded rotary joint is inserted into the rotary joint flange, and the outer shell of the embedded rotary joint is fixedly connected to the rotary joint flange by fasteners.
[0008] Compared with the prior art, the present utility model at least achieves the following beneficial effects:
[0009] A cooling cavity is provided along the length direction inside the hot straightening roller of the present utility model. A first high-temperature resistant sealing assembly is provided at one end of the cooling cavity, an embedded rotary joint and a second high-temperature resistant sealing assembly are provided at the other end. Both ends of the cooling cavity are sealed by the first high-temperature resistant sealing assembly and the second high-temperature resistant sealing assembly, and can withstand relatively high temperatures. An inlet interface and an outlet interface are provided at the outer end of the embedded rotary joint. The embedded rotary joint can adapt to the rotating working state of the hot straightening roller while maintaining the sealing property. Cooling water enters through the inlet interface of the embedded rotary joint, passes through the stainless steel water injection pipe until it flows out through the water outlet holes on the side wall of the water outlet end, and then flows to the surrounding cooling cavity to cool the hot straightening roller. Finally, it returns to the stainless steel water injection pipe and flows out through the outlet interface of the embedded rotary joint. By arranging the cooling water to circulate inside the straightening roller, it can avoid the deformation and damage caused by excessive temperature on the outer peripheral surface of the straightening roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Now, one or more embodiments of the present utility model will be described only by way of example with reference to the accompanying drawings, in which:
[0011] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;
[0012] Figure 2 is Figure 1 a front view of the embodiment;
[0013] Figure 3 is Figure 1 a schematic structural diagram of the hot straightening roller assembly and the back pressure roller assembly of the embodiment;
[0014] Figure 4 is Figure 1 a schematic structural diagram of the hot straightening roller of the embodiment;
[0015] Figure 5 is Figure 1 a schematic internal structure diagram of the hot straightening roller of the embodiment.
[0016] The reference numerals in the figure are: 1, frame; 2, hot straightening roll assembly; 21, hot straightening roll; 3, back pressure roll assembly; 4, pinch roll assembly; 5, cooling chamber; 6, first high-temperature resistant sealing assembly; 61, water injection pipe head seat; 62, first O-ring; 7, embedded rotary joint; 71, water inlet interface; 72, water outlet interface; 8, second high-temperature resistant sealing assembly; 81, rotary joint flange; 82, second O-ring; 9, stainless steel water injection pipe; 91, water outlet hole; 10, support member; 20, cooling water drainage diverter; 30, first drive system; 40, second drive system; 50, hard tooth surface reduction motor; 60, universal joint; 70, gear box; 80, upper roll bottom plate; 90, slider; 100, guide post; 200, first elastic member; 300, cross beam; 400, longitudinal beam; 500, second elastic member; 600, worm gear box; 700, spherical roller thrust bearing; 800, helical gear worm reduction motor; 900, adjusting pull rod. Detailed implementation mode
[0017] The present invention will be described in detail below with reference to the exemplary embodiments in the drawings. It should be understood, however, that the present application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.
[0018] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a number of" and "a plurality of" is two or more, unless otherwise specifically and clearly defined. In the present application, unless otherwise clearly specified and limited, the terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.
[0019] Such as Figures 1 to 5As shown, in an embodiment of the hot straightening machine of the present utility model, the hot straightening machine includes a frame 1, and a hot straightening roll assembly 2, a back pressure roll assembly 3, a pinch roll assembly 4, a first drive system 30 and a second drive system 40 provided on the frame 1; the hot straightening roll assembly 2 includes two sets of upper and lower parallel hot straightening rolls 21, a cooling cavity 5 is provided along the length direction inside the hot straightening roll 21, a first high-temperature sealing assembly 6 is installed at one end of the cooling cavity 5, and a buried rotary joint 7 and a second high-temperature sealing assembly 8 are provided at the other end. The buried rotary joint 7 is installed at the end of the cooling cavity 5 through the second high-temperature sealing assembly 8. The outer end of the buried rotary joint 7 is provided with a water inlet interface 71 and a water outlet interface 72. A stainless steel water injection pipe 9 is coaxially provided inside the cooling cavity 5. The outer diameter of the stainless steel water injection pipe 9 is smaller than the inner diameter of the cooling cavity 5. The water outlet end of the stainless steel water injection pipe 9 is inserted into the first high-temperature sealing assembly 6, and a water outlet hole 91 is provided on the side wall of the water outlet end of the stainless steel water injection pipe 9. The water inlet end of the stainless steel water injection pipe 9 is communicated with the buried rotary joint 7; the back pressure roll assembly 3 is arranged parallel to the upper and lower sides of the hot straightening roll assembly 2. The function of the back pressure roll assembly 3 is to provide back pressure to help the hot straightening roll assembly 2 straighten the metal sheet and prevent it from being excessively bent or rebounded during the straightening process, ensuring the straightening accuracy; the pinch roll assembly 4 is arranged parallel to the feeding side and the discharging side of the hot straightening roll assembly 2. It is used to clamp and feed the metal sheet during the straightening process to ensure that the sheet remains stable during the straightening process and avoid situations such as deviation or sliding; the first drive system 30 and the second drive system 40 are respectively used to drive the hot straightening roll assembly 2 and the pinch roll assembly 4 to rotate.
[0020] Further, the first high-temperature sealing assembly 6 includes a water injection pipe head seat 61 and a first O-ring 62. The outer wall of the water injection pipe head seat 61 is provided with an annular groove for installing the first O-ring 62. The water injection pipe head seat 61 is hermetically inserted into the cooling cavity 5 through the first O-ring 62. The inner end of the water injection pipe head seat 61 is provided with a jack for inserting the stainless steel water injection pipe 9. The second high-temperature sealing assembly 8 includes a rotary joint flange 81 and a second O-ring 82. One end inner wall of the rotary joint flange 81 is provided with an annular groove for installing the second O-ring 82. The rotary joint flange 81 is hermetically sleeved on the end of the hot straightening roll 21 through the second O-ring 82; the buried rotary joint 7 is inserted into the rotary joint flange 81, and the outer shell of the buried rotary joint 7 is fixedly connected to the rotary joint flange 81 by fasteners. The first high-temperature sealing assembly 6 and the second high-temperature sealing assembly 8 can withstand high temperatures and ensure the sealing of the cooling cavity 5. The buried rotary joint 7 can adapt to the rotating working state of the hot straightening roll 21 while maintaining the sealing.
[0021] Further, a plurality of support members 10 for supporting on the side wall of the cooling chamber 5 are fixedly connected to the outer wall of the stainless steel water injection pipe 9. Each group of support members 10 includes a plurality of friction tabs arranged at intervals in the circumferential direction of the stainless steel water injection pipe 9. The friction tabs are used to abut against the inner wall of the cooling chamber 5 to ensure the stability of the stainless steel water injection pipe 9.
[0022] Optionally, the hot straightening roll 21 is made of H13 (4Cr5Mosivl) steel and has the characteristic of high temperature resistance.
[0023] Further, a cooling water discharge diverter 20 is installed on the frame 1. The cooling water discharge diverter 20 is located below the embedded rotary joint 7. A plurality of water inlet joints and water outlet joints corresponding to the water inlet interface 71 and the water outlet interface 72 are provided on the cooling water discharge diverter 20.
[0024] Both the first drive system 30 and the second drive system 40 include a hard tooth surface reduction motor 50, a universal joint 60, and a gear box 70. The gear box 70 is connected to the output shaft of the hard tooth surface reduction motor 50. The gear box 70 is connected to the hot straightening roll assembly 2 or the pinch roll assembly 4 through the universal joint 60. The power is transmitted from the hard tooth surface reduction motor 50 through the universal joint 60 and the gear box 70 to provide power for both the upper and lower rolls of the hot straightening roll assembly 2 and the pinch roll assembly 4, ensuring stable passing of the sheet material and preventing slipping.
[0025] Further, an upper roll bottom plate 80 is provided in parallel at the top of the back pressure roll assembly 3 located above. A slider 90 is provided in parallel at the top of the upper roll bottom plate 80. Guide columns 100 are erected at the four corners of the frame 1. The slider 90 is slidably connected to the guide columns 100. A first elastic member 200 is provided on the guide columns 100 below the slider 90. A cross beam 300 and a longitudinal beam 400 are connected between the tops of the guide columns 100. A second elastic member 500 is connected between the cross beam 300 and the longitudinal beam 400. A worm gear box 600 and a thrust self-aligning roller bearing 700 are provided between the cross beam 300 and the slider 90. A meshing worm gear and worm are provided in the worm gear box 600. The worm gear and the thrust self-aligning roller bearing 700 are coaxially connected to the guide columns 100, and the thrust self-aligning roller bearing 700 is located at both ends of the worm gear. An inclined gear worm gear reduction motor 800 is externally connected to the worm, and the inclined gear worm gear reduction motor 800 is installed on the slider 90. Further, an adjusting pull rod 900 is also provided between the cross beam 300 and the slider 90. One end of the adjusting pull rod 900 is rotatably connected to the slider 90, and the other end passes through the cross beam 300 and is connected with a nut.
[0026] The adjusting pull rod 900 is used to adjust the position of the cross beam 300 relative to the slider 90. The worm gear drives the guide post 100 to rotate, thereby driving the slider 90 to move linearly up and down, adjusting the gap between the upper and lower hot straightening rollers 21, and adjusting the leveling accuracy. The first elastic member 200 and the second elastic member 500 have a buffering effect. The gear worm gear reduction motor 800 is used to drive the worm gear and the worm to work. The spherical roller thrust bearing 700 has self-aligning performance, allows the shaft to have a certain inclination, has a particularly large axial load capacity, and can also bear a certain radial load at the same time.
[0027] It should be understood that all of the above embodiments are exemplary rather than restrictive. Under the concept of the present invention, any modifications, equivalent changes and modifications made to the specific embodiments described above by those skilled in the art still fall within the scope of the technical solution of the present invention.
Claims
1. A hot straightening machine, characterized in that: It includes a frame (1), a hot straightening roll assembly (2), a back pressure roll assembly (3) and a pinch roll assembly (4) provided on the frame (1); The hot straightening roll assembly (2) includes two sets of parallel hot straightening rolls (21) arranged up and down. A cooling cavity (5) is provided along the length direction inside the hot straightening roll (21). One end of the cooling cavity (5) is installed with a first high-temperature resistant sealing assembly (6), and the other end is provided with an embedded rotary joint (7) and a second high-temperature resistant sealing assembly (8). The embedded rotary joint (7) is installed at the end of the cooling cavity (5) through the second high-temperature resistant sealing assembly (8). The outer end of the embedded rotary joint (7) is provided with a water inlet interface (71) and a water outlet interface (72). A stainless steel water injection pipe (9) is coaxially arranged inside the cooling cavity (5). The outer diameter of the stainless steel water injection pipe (9) is smaller than the inner diameter of the cooling cavity (5). The water outlet end of the stainless steel water injection pipe (9) is inserted into the first high-temperature resistant sealing assembly (6), and water outlet holes (91) are provided on the side wall of the water outlet end of the stainless steel water injection pipe (9). The water inlet end of the stainless steel water injection pipe (9) is communicated with the embedded rotary joint (7); The back pressure roll assembly (3) is arranged in parallel above and below the hot straightening roll assembly (2); The pinch roll assembly (4) is arranged in parallel on the feeding side and the discharging side of the hot straightening roll assembly (2).
2. The hot straightening machine according to claim 1, wherein: The first high-temperature resistant sealing assembly (6) includes a water injection pipe head seat (61) and a first O-ring (62). An annular groove for installing the first O-ring (62) is provided on the outer wall of the water injection pipe head seat (61). The water injection pipe head seat (61) is sealingly inserted into the cooling cavity (5) through the first O-ring (62). A jack for inserting the stainless steel water injection pipe (9) is provided at the inner end of the water injection pipe head seat (61).
3. The hot straightening machine according to claim 1, wherein: The second high-temperature resistant sealing assembly (8) includes a rotary joint flange (81) and a second O-ring (82). An annular groove for installing the second O-ring (82) is provided on the inner wall of one end of the rotary joint flange (81). The rotary joint flange (81) is sealingly sleeved on the end of the hot straightening roll (21) through the second O-ring (82). The embedded rotary joint (7) is inserted into the rotary joint flange (81), and the outer shell of the embedded rotary joint (7) is fixedly connected to the rotary joint flange (81) by fasteners.
4. The hot straightening machine according to claim 1, wherein: A plurality of sets of support members (10) for supporting on the side wall of the cooling cavity (5) are fixedly connected to the outer wall of the stainless steel water injection pipe (9). Each set of support members (10) includes a plurality of friction tabs arranged at intervals along the circumferential direction of the stainless steel water injection pipe (9).
5. The hot straightening machine according to claim 1, characterized in that: The hot straightening roll (21) is made of H13 steel.
6. The hot straightening machine according to claim 1, characterized in that: A cooling water discharge diverter (20) is installed on the frame (1). The cooling water discharge diverter (20) is located below the embedded rotary joint (7). A plurality of water inlet joints and water outlet joints corresponding to the water inlet interface (71) and the water outlet interface (72) are provided on the cooling water discharge diverter (20).
7. The hot straightening machine according to claim 1, characterized in that: It further includes a first drive system (30) and a second drive system (40). The first drive system (30) and the second drive system (40) are respectively used to drive the hot straightening roll assembly (2) and the pinch roll assembly (4) to rotate. Both the first drive system (30) and the second drive system (40) include a hard tooth surface reduction motor (50), a universal joint (60) and a gearbox (70). The gearbox (70) is connected to the output shaft of the hard tooth surface reduction motor (50), and the gearbox (70) is connected to the hot straightening roll assembly (2) or the pinch roll assembly (4) through the universal joint (60).
8. The hot straightening machine according to claim 1, characterized in that: A top roller bottom plate (80) is provided in parallel at the top of the back pressure roll assembly (3) located above. Sliders (90) are provided in parallel at the top of the top roller bottom plate (80); guide columns (100) are erected at the four corners of the frame (1). The sliders (90) are slidably connected to the guide columns (100). A first elastic member (200) is provided below the sliders (90) on the guide columns (100). A cross beam (300) and a longitudinal beam (400) are connected between the tops of the guide columns (100). A second elastic member (500) is connected between the cross beam (300) and the longitudinal beam (400). A worm gear box (600) and a spherical roller thrust bearing (700) are provided between the cross beam (300) and the slider (90). A meshing worm gear and worm are provided in the worm gear box (600). The worm gear and the spherical roller thrust bearing (700) are coaxially connected to the guide columns (100), and the spherical roller thrust bearing (700) is located at both ends of the worm gear. A helical gear worm gear reduction motor (800) is externally connected to the worm, and the helical gear worm gear reduction motor (800) is installed on the slider (90).
9. The hot straightening machine according to claim 8, characterized in that: An adjusting pull rod (900) is further provided between the cross beam (300) and the slider (90). One end of the adjusting pull rod (900) is rotatably connected to the slider (90), and the other end passes through the cross beam (300) and is connected with a nut.