Turnover type hot rolling mill

Abstract

The utility model provides a turnover type hot rolling mill, which relates to the technical field of hot rolling mills and comprises a hot rolling mill main body, the longitudinal partition plate is fixedly assembled in the hot rolling mill main body and used for isolating hot rolling parts of the hot rolling mill main body; the strip-shaped through hole is transversely formed in the longitudinal partition plate; the first overturning preheating mechanism, the second overturning preheating mechanism and the third overturning preheating mechanism are fixedly assembled in the hot rolling mill body from near to far away from the longitudinal partition plate. According to the device, passing non-woven fabrics are sequentially preheated through the third overturning preheating mechanism, the second overturning preheating mechanism and the first overturning preheating mechanism, the heights of the first overturning preheating mechanism, the second overturning preheating mechanism and the third overturning preheating mechanism are sequentially reduced after overturning, and then the preheating temperatures of the first overturning preheating mechanism, the second overturning preheating mechanism and the third overturning preheating mechanism are sequentially reduced; the preheating temperature is stably increased, and the non-woven fabric is prevented from generating large temperature change in a short time.

Description

Technical Field

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

[0002] Hot rolling is the process of melting uniform fiber filaments through rolling wheels with high temperature (100℃-150℃) to form a web. It is the last web-forming technology in the production process of non-woven fabrics. It is a process of forming fabrics after cooling and laying. As a process, hot-rolled non-woven fabric is not a specific type of fabric, but a general term for non-woven fabrics made through similar processes.

[0003] In order to avoid quality problems caused by sudden heating of non-woven fabrics, existing hot rolling mills preheat the non-woven fabrics through preheating rollers before processing. However, this preheating method cannot steadily increase the temperature of the non-woven fabrics. The non-woven fabrics directly contact the preheating rollers and can still produce large temperature changes in a short period of time, resulting in quality defects in the produced non-woven fabrics. Utility Model Content

[0004] The utility model aims to provide a reversible hot rolling mill, which preheats a non-woven fabric passing therethrough in sequence through a third reversing preheating mechanism, a second reversing preheating mechanism and a first reversing preheating mechanism, wherein the heights of the first reversing preheating mechanism, the second reversing preheating mechanism and the third reversing preheating mechanism are successively reduced after reversing, and thus their preheating temperatures are also successively reduced, thereby achieving a steady increase in the preheating temperature and avoiding a large temperature change of the non-woven fabric in a relatively short time.

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

[0006] Hot rolling mill body;

[0007] A longitudinal partition, which is fixedly assembled in the hot rolling mill body, and is used to isolate the hot rolling parts of the hot rolling mill body;

[0008] The end of the hot rolling mill body away from the hot rolling parts is the feeding end, and the end opposite to the feeding end is the discharging end;

[0009] A strip-shaped through hole is transversely opened on the longitudinal partition;

[0010] The first flip preheating mechanism;

[0011] Second flip preheating mechanism;

[0012] The third flip preheating mechanism;

[0013] The first reversing preheating mechanism, the second reversing preheating mechanism and the third reversing preheating mechanism are fixedly assembled in the hot rolling mill body from near to far from the longitudinal partition;

[0014] The heights of the first overturning preheating mechanism, the second overturning preheating mechanism and the third overturning preheating mechanism decrease in sequence after being overturned.

[0015] As a further optimization scheme, in order to make the preheating electric heating tube flippable, the distance between the electric heating tube and the non-woven fabric above is adjusted to change the preheating temperature, the first flip preheating mechanism, the second flip preheating mechanism and the third flip preheating mechanism have the same structure, and the first flip preheating mechanism includes:

[0016] Round rod, the rotating shaft of which is mounted on the front and rear sides of the inner wall of the hot rolling mill body;

[0017] A first drive motor, whose rotating shaft is fixedly connected to the end of the round rod, and whose housing is fixedly assembled on the outer wall of the hot rolling mill body;

[0018] A sleeve, which is fixedly sleeved on the outer wall of the round rod;

[0019] A support plate, one end of which is vertically fixedly assembled on the outer wall of the sleeve;

[0020] An arc-shaped mounting plate, which is fixedly assembled on the other end of the supporting plate;

[0021] The arc-shaped mounting plate is evenly and longitudinally fixedly equipped with electric heating tubes, and the electric heating tubes are connected in parallel to an external power supply.

[0022] As a further optimization scheme, in order to facilitate the control of the flipping angles of the first flipping preheating mechanism, the second flipping preheating mechanism and the third flipping preheating mechanism, a control panel is fixedly installed on the outer wall of the hot rolling mill body, and the control panel is electrically connected to the first flipping preheating mechanism, the second flipping preheating mechanism and the third flipping preheating mechanism respectively.

[0023] As a further optimization scheme, in order to achieve hot rolling of non-woven fabrics, the hot rolling mill body comprises:

[0024] shell;

[0025] A feed inlet is transversely opened on an end of the shell away from the longitudinal partition;

[0026] A discharge port, which is transversely opened on the opposite end of the feed port;

[0027] The hot rolling structure is assembled in the shell and is arranged close to the feed port.

[0028] As a further optimization scheme, in order to hot-roll the nonwoven fabric, the hot-rolling structure includes:

[0029] The lower hot rolling roller is longitudinally rotatably mounted on the front and rear sides of the inner wall of the shell;

[0030] A second drive motor, whose rotating shaft is fixedly connected to the end of the lower hot rolling roller, and whose housing is fixedly mounted on the outer wall of the housing;

[0031] The lifting and rotating connection structures are two in parallel and arranged in front and back, and the two lifting and rotating connection structures are respectively assembled on the front and back side walls of the housing;

[0032] The upper hot rolling roller has two ends rotatably connected in the lifting and rotating connection structure on the same side, and the upper hot rolling roller is located directly above the lower hot rolling roller.

[0033] As a further optimization scheme, in order to adjust the height of the upper hot rolling roller, the lifting and rotating connection structure includes:

[0034] There are two installation windows, which are parallelly distributed in the front and rear, and the two installation windows are symmetrically opened on the front and rear side walls of the shell;

[0035] An electric push rod is fixedly mounted in the middle of the top surface of the installation window, a bearing seat is fixedly mounted on the telescopic lower end of the electric push rod, and both ends of the upper hot rolling roller are fixedly connected to the inner ring surface of the bearing seat on the same side.

[0036] As a further optimization scheme, in order to reel up the inlet and outlet of the non-woven fabric respectively, a first detachable roller is fixedly mounted on the end where the inlet of the shell is located, and a second detachable roller is fixedly mounted on the end where the outlet of the shell is located.

[0037] As a further optimization scheme, in order to enable the roller body to be disassembled and replaced easily, the first roller and the second roller are of the same structure, and the first roller comprises:

[0038] Roller body;

[0039] There are two detachable mounting seats, which are parallelly distributed in the front and rear; the two detachable mounting seats are fixedly assembled on the housing;

[0040] The two ends of the roller body are assembled in the detachable mounting seat on the same side.

[0041] As a further optimization solution, in order to facilitate the disassembly and replacement of the roller body, the detachable mounting seat includes:

[0042] A connecting ear plate, which is fixedly connected to the housing;

[0043] A mounting groove is provided on the upper surface of the connecting ear plate;

[0044] Install the cover plate, which is buckled into the installation groove;

[0045] A fixing bolt, which fixes the mounting cover plate in the mounting groove;

[0046] The two ends of the roller body are rotatably clamped at the position between the mounting cover plate and the mounting groove on the same side.

[0047] As a further optimization solution, in order to achieve an anti-skid effect, an anti-skid pad is evenly adhered and fixed to the bottom surface of the shell.

[0048] The utility model provides a reversible hot rolling mill through improvement, which has the following improvements and advantages compared with the prior art:

[0049] Firstly, the device preheats the non-woven fabric passing through the third flip preheating mechanism, the second flip preheating mechanism and the first flip preheating mechanism in sequence. The flipping heights of the first flip preheating mechanism, the second flip preheating mechanism and the third flip preheating mechanism decrease in sequence, and then their preheating temperatures also decrease in sequence, thereby achieving a steady increase in the preheating temperature and avoiding large temperature changes of the non-woven fabric in a short time.

[0050] Secondly, the first flip preheating mechanism, the second flip preheating mechanism and the third flip preheating mechanism have the same structure, and can control the flipping angle of the electric heating tube, adjust the distance between the electric heating tube and the non-woven fabric above, and then change the preheating temperature, and can perform adaptive adjustment for the processing of non-woven fabrics with different heat resistance levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] 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.

[0052] Figure 1 It is a schematic diagram of the structure of the utility model;

[0053] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0054] Figure 3 It is a structural schematic diagram of the hot rolling structure of the utility model;

[0055] Figure 4 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0056] Figure 5 This is a schematic diagram of the detachable roller structure of the first roller of the utility model.

[0057] Description of reference numerals:

[0058] 1-hot rolling mill body, 11-shell, 12-feed port, 13-discharge port, 14-hot rolling structure, 141-lower hot rolling roller, 142-second drive motor, 143-lifting rotary connection structure, 1431-installation window, 1432-electric push rod, 1433-bearing seat, 144-upper hot rolling roller, 2-longitudinal partition, 3-strip through hole, 4-first flip preheating mechanism, 41-round rod, 42-first drive motor, 43-sleeve, 44-support plate, 45-arc mounting plate, 46-electric heating pipe, 5-second flip preheating mechanism, 6-third flip preheating mechanism, 7-first roller detachable roller, 71-detachable mounting seat, 711-connecting ear plate, 712-installation groove, 713-installation cover plate, 714-fixing bolt, 72-roller body, 8-second roller detachable roller, 9-control panel. DETAILED DESCRIPTION

[0059] 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.

[0060] 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.

[0061] 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.

[0062] See also Figure 1-5 The utility model provides a technical solution: a turnover hot rolling mill, comprising:

[0063] Hot rolling mill body 1;

[0064] A longitudinal partition 2 is fixedly assembled in the hot rolling mill body 1. The longitudinal partition 2 is used to isolate the hot rolling parts of the hot rolling mill body 1. The longitudinal partition 2 plays a heat insulation role to prevent the temperature of the hot rolling parts from affecting the preheating temperature of the non-woven fabric;

[0065] The end of the hot rolling mill body 1 away from the hot rolling part is the feed end, and the end opposite to the feed end is the discharge end, so that the non-woven fabric is preheated before hot rolling, avoiding a large temperature change of the non-woven fabric in a short time;

[0066] A strip-shaped through hole 3 is transversely opened on the longitudinal partition 2, and the strip-shaped through hole 3 is used for non-woven fabric to pass through;

[0067] The first turning preheating mechanism 4;

[0068] The second turning preheating mechanism 5;

[0069] The third turning preheating mechanism 6;

[0070] The first reversing preheating mechanism 4, the second reversing preheating mechanism 5 and the third reversing preheating mechanism 6 are fixedly assembled in the hot rolling mill body 1 from near to far from the longitudinal partition 2;

[0071] The heights of the first overturning preheating mechanism 4 , the second overturning preheating mechanism 5 and the third overturning preheating mechanism 6 decrease in sequence after being overturned.

[0072] In some embodiments, in order to make the preheating electric heating tube 46 flippable, the distance between the electric heating tube 46 and the non-woven fabric above is adjusted to change the preheating temperature, the first flip preheating mechanism 4, the second flip preheating mechanism 5 and the third flip preheating mechanism 6 have the same structure, and the first flip preheating mechanism 4 includes:

[0073] A round rod 41, whose rotating shaft is mounted on the front and rear sides of the inner wall of the hot rolling mill body 1;

[0074] A first drive motor 42, whose shaft is fixedly connected to the end of the round rod 41, and whose housing is fixedly mounted on the outer wall of the hot rolling mill body 1;

[0075] A sleeve 43, which is fixedly sleeved on the outer wall of the round rod 41;

[0076] A support plate 44, one end of which is vertically fixedly assembled on the outer wall of the sleeve 43;

[0077] An arc-shaped mounting plate 45, which is fixedly mounted on the other end of the supporting plate 44;

[0078] The arc-shaped mounting plate 45 is evenly and longitudinally fixedly mounted with electric heating tubes 46 , and the electric heating tubes 46 are connected in parallel to an external power source.

[0079] The first driving motor 42 is connected to an external power source, through which the round rod 41, the sleeve 43, the support plate 44 and the arc-shaped mounting plate 45 are driven to rotate, thereby driving the electric heating tube 46 on the arc-shaped mounting plate 45 to flip the angle.

[0080] In some embodiments, in order to facilitate the control of the flipping angles of the first flipping preheating mechanism 4, the second flipping preheating mechanism 5 and the third flipping preheating mechanism 6, a control panel 9 is fixedly installed on the outer wall of the hot rolling mill body 1, and the control panel 9 is electrically connected to the first flipping preheating mechanism 4, the second flipping preheating mechanism 5 and the third flipping preheating mechanism 6 respectively; the control panel 9 facilitates the control of the flipping angle of the electric heating tube 46.

[0081] In some embodiments, in order to achieve hot rolling of nonwoven fabrics, the hot rolling mill body 1 includes:

[0082] Housing 11;

[0083] A feed inlet 12 is transversely opened on an end of the housing 11 away from the longitudinal partition 2;

[0084] A discharge port 13 is transversely opened at an opposite end of the feed port 12;

[0085] The hot rolling structure 14 is assembled in the housing 11 and is disposed close to the feed port 12 .

[0086] In some embodiments, in order to perform hot rolling on the nonwoven fabric, the hot rolling structure 14 includes:

[0087] The lower hot rolling roller 141 is longitudinally rotatably mounted on the front and rear sides of the inner wall of the housing 11;

[0088] A second drive motor 142, whose rotating shaft is fixedly connected to the end of the lower hot rolling roller 141, and a housing of the second drive motor 142 is fixedly assembled on the outer wall of the housing 11;

[0089] There are two lifting and rotating connection structures 143 parallel to each other, and the two lifting and rotating connection structures 143 are respectively assembled on the front and rear side walls of the housing 11;

[0090] The upper hot rolling roller 144 has its two ends rotatably connected to the lifting and rotating connection structure 143 on the same side. The upper hot rolling roller 144 is located directly above the lower hot rolling roller 141. The lifting and rotating connection structure 143 can drive the upper hot rolling roller 144 to move up and down, and the distance between the upper hot rolling roller 144 and the lower hot rolling roller 141 can be adjusted to adapt to the hot rolling of non-woven fabrics of different thicknesses.

[0091] In some embodiments, in order to adjust the height of the upper hot rolling roller 144, the lifting and rotating connection structure 143 includes:

[0092] There are two installation windows 1431 parallel to each other, and the two installation windows 1431 are symmetrically opened on the front and rear side walls of the housing 11;

[0093] An electric push rod 1432 is fixedly assembled in the middle of the top surface of the installation window 1431, and a bearing seat 1433 is fixedly assembled at the telescopic lower end of the electric push rod 1432. Both ends of the upper hot rolling roller 144 are fixedly connected to the inner ring surface of the bearing seat 1433 on the same side; the electric push rod 1432 is connected to an external power supply, and the electric push rods 1432 on the front and rear sides work synchronously to drive the upper hot rolling roller 144 to rise and fall.

[0094] In some embodiments, in order to respectively wind up the inlet and outlet of the non-woven fabric, a first detachable roller 7 is fixedly mounted on the end where the feed port 12 of the outer shell 11 is located, and a second detachable roller 8 is fixedly mounted on the end where the outlet port 13 of the outer shell 11 is located; the first detachable roller 7 is used for winding up the non-woven fabric at the feed end, and the second detachable roller 8 is used for winding up the non-woven fabric at the outlet end.

[0095] In some embodiments, in order to enable the roller body 72 to be disassembled and replaced, the first roller detachable roller 7 and the second roller detachable roller 8 have the same structure, and the first roller detachable roller 7 includes:

[0096] Roller body 72;

[0097] There are two detachable mounting seats 71, which are parallelly distributed in the front and rear. The two detachable mounting seats 71 are fixedly assembled on the housing 11.

[0098] Both ends of the roller body 72 are assembled in the detachable mounting seat 71 on the same side; the roller body 72 can be detached from the detachable mounting seat 71 .

[0099] In some embodiments, in order to facilitate the disassembly and replacement of the roller body 72, the detachable mounting seat 71 includes:

[0100] A connecting ear plate 711, which is fixedly connected to the housing 11;

[0101] A mounting groove 712 is provided on the upper surface of the connecting ear plate 711;

[0102] Install the cover plate 713, which is buckled into the installation groove 712;

[0103] A fixing bolt 714, which fixes the mounting cover plate 713 in the mounting groove 712;

[0104] The two ends of the roller body 72 are rotatably clamped in the position between the mounting cover plate 713 and the mounting groove 712 on the same side; by removing the fixing bolts 714, the mounting cover plate 713 can be removed from the mounting groove 712, and then the roller body 72 can be removed, so that the roller body 72 can be removed and replaced easily.

[0105] In some embodiments, in order to achieve an anti-slip effect, an anti-slip pad is evenly adhered and fixed to the bottom surface of the housing 11 .

[0106] Working principle:

[0107] The end of the hot rolling mill body 1 away from the hot rolling part is the feed end, and the end opposite to the feed end is the discharge end, so that the non-woven fabric is preheated before hot rolling, avoiding a large temperature change of the non-woven fabric in a short time;

[0108] The nonwoven fabric passing through is preheated in sequence by the third flip preheating mechanism 6, the second flip preheating mechanism 5 and the first flip preheating mechanism 4. The flipped heights of the first flip preheating mechanism 4, the second flip preheating mechanism 5 and the third flip preheating mechanism 6 are successively reduced, and then their preheating temperatures are also successively reduced, so that a steady increase in the preheating temperature is achieved, and a large temperature change of the nonwoven fabric can be avoided in a short time.

[0109] The first flip preheating mechanism 4, the second flip preheating mechanism 5 and the third flip preheating mechanism 6 have the same structure, and can control the flip angle of the electric heating tube 46, adjust the distance between the electric heating tube 46 and the non-woven fabric above, and then change the preheating temperature, and can perform adaptive adjustment for the processing of non-woven fabrics with different heat resistance levels.

[0110] 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 mill, characterized in that: include: Hot rolling mill body (1); A longitudinal partition (2) fixedly mounted in the hot rolling mill body (1), the longitudinal partition (2) being used to isolate the hot rolling parts of the hot rolling mill body (1); The end of the hot rolling mill body (1) away from the hot rolling parts is the feeding end, and the end opposite to the feeding end is the discharging end; A strip-shaped through hole (3) is transversely opened on the longitudinal partition (2); A first turning and preheating mechanism (4); A second turning and preheating mechanism (5); A third turning and preheating mechanism (6); The first turning preheating mechanism (4), the second turning preheating mechanism (5) and the third turning preheating mechanism (6) are fixedly assembled in the hot rolling mill body (1) from near to far away from the longitudinal partition (2); After being turned over, the heights of the first turning over preheating mechanism (4), the second turning over preheating mechanism (5) and the third turning over preheating mechanism (6) are successively reduced.

2. A hot rolling mill according to claim 1, characterized in that: The first overturning preheating mechanism (4), the second overturning preheating mechanism (5) and the third overturning preheating mechanism (6) have the same structure. The first overturning preheating mechanism (4) comprises: A round rod (41) whose rotating shaft is mounted on the front and rear sides of the inner wall of the hot rolling mill body (1); A first drive motor (42), the rotation shaft of which is fixedly connected to the end of the round rod (41), and the housing of the first drive motor (42) is fixedly mounted on the outer wall of the hot rolling mill body (1); A sleeve (43) is fixedly sleeved on the outer wall of the round rod (41); A support plate (44), one end of which is vertically fixedly mounted on the outer wall of the sleeve (43); An arc-shaped mounting plate (45) fixedly mounted on the other end of the supporting plate (44); The arc-shaped mounting plate (45) is evenly and longitudinally fixedly mounted with electric heating pipes (46), and the electric heating pipes (46) are connected in parallel to an external power source.

3. A hot rolling mill according to claim 1, characterized in that: A control panel (9) is fixedly mounted on the outer wall of the hot rolling mill body (1), and the control panel (9) is electrically connected to the first reversing preheating mechanism (4), the second reversing preheating mechanism (5) and the third reversing preheating mechanism (6) respectively.

4. A hot rolling mill according to claim 1, characterized in that: The hot rolling mill body (1) comprises: Housing (11); A feed inlet (12) is transversely opened on an end of the housing (11) away from the longitudinal partition (2); A discharge port (13) is transversely opened at an opposite end of the feed port (12); A hot rolling structure (14) is assembled in the housing (11), and the hot rolling structure (14) is arranged close to the feed port (12).

5. A hot rolling mill according to claim 4, characterized in that: The hot-rolled structure (14) comprises: The lower hot rolling roller (141) is longitudinally rotatably mounted on the front and rear sides of the inner wall of the housing (11); A second driving motor (142), the rotating shaft of which is fixedly connected to the end of the lower hot rolling roller (141), and the housing of the second driving motor (142) is fixedly mounted on the outer wall of the housing (11); A lifting and rotating connection structure (143), two of which are parallelly distributed in the front and rear, and the two lifting and rotating connection structures (143) are respectively assembled on the front and rear side walls of the housing (11); The upper hot rolling roller (144) has two ends rotatably connected to the lifting and rotating connection structure (143) on the same side, and the upper hot rolling roller (144) is located directly above the lower hot rolling roller (141).

6. A hot rolling mill according to claim 5, characterized in that: The lifting and rotating connection structure (143) comprises: There are two installation windows (1431) arranged in parallel in the front and rear sides, and the two installation windows (1431) are symmetrically arranged on the front and rear side walls of the housing (11); An electric push rod (1432) is fixedly mounted in the middle of the top surface of the installation window (1431), and a bearing seat (1433) is fixedly mounted at the telescopic lower end of the electric push rod (1432), and both ends of the upper hot rolling roller (144) are fixedly connected to the inner ring surface of the bearing seat (1433) on the same side.

7. A hot rolling mill according to claim 4, characterized in that: A first detachable roller (7) is fixedly mounted on the end where the feed port (12) of the shell (11) is located, and a second detachable roller (8) is fixedly mounted on the end where the discharge port (13) of the shell (11) is located.

8. A hot rolling mill according to claim 7, characterized in that: The first detachable roller (7) and the second detachable roller (8) have the same structure. The first detachable roller (7) comprises: Roller body (72); Two detachable mounting seats (71) are arranged parallel to each other in the front and rear; the two detachable mounting seats (71) are fixedly mounted on the housing (11); Both ends of the roller body (72) are assembled in the detachable mounting seat (71) on the same side.

9. A hot rolling mill according to claim 8, characterized in that: The detachable mounting seat (71) comprises: A connecting ear plate (711) fixedly connected to the housing (11); A mounting groove (712) is provided on the upper surface of the connecting ear plate (711); An installation cover plate (713) is buckled into the installation groove (712); A fixing bolt (714) which fixes the mounting cover plate (713) into the mounting groove (712); The two ends of the roller body (72) are rotatably clamped to the position between the mounting cover plate (713) and the mounting groove (712) on the same side.

10. A hot rolling mill according to claim 4, characterized in that: An anti-slip pad is evenly adhered and fixed to the bottom surface of the housing (11).

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