Loading and unloading device and loading and unloading method for roller

Abstract

The invention relates to a roll changing device for a rolling mill and a loading and unloading method. The roll changing device comprises a support which is arranged on the ground and extends in the horizontal direction X, at least two rolls to be installed are arranged below the support in the direction X, the axis direction of the rolls is Y, and the direction perpendicular to the direction X and the direction Y is Z; the roller conveying mechanism is movably connected to the support and can translate along the support, the roller conveying mechanism can move in the Y direction and the Z direction and rotate in the X direction and the Z direction relative to the support, and the roller conveying mechanism can convey a roller from an initial position to a final position along a preset path under the driving of external force; and a control mechanism for an operator to preset a preset coordinate value of the roller conveying mechanism is arranged on the ground. By arranging the control mechanism, the roller conveying mechanism can move along the specified path according to the specified degree to complete roller loading and unloading operation, the operation efficiency and safety are high, the roller conveying mechanism can accurately adjust the position, and the situation that a lifting appliance makes contact with the working face of a roller, and consequently the roller is damaged is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of roll replacement, and particularly relates to a loading and unloading device and method for rolls. Background Art

[0002] A rolling mill is a device used in the metal rolling process. Different rolling mills are provided with different numbers of rolls. According to the number of rolls, rolling mills can generally be divided into two-high, four-high, six-high, eight-high, twelve-high, eighteen-high, etc. Among them, the rolls mainly include backup rolls, intermediate rolls, work rolls, etc. After long-term use, the rolls usually show varying degrees of wear, so they need to be replaced regularly. The steps for replacing the rolls are as follows: The operator manually operates the roll transfer cart to transport the work roll frame located on the roll transfer cart to the designated position. Subsequently, the operator manually operates the manual hoist to hoist the work roll frame to the new position on the roll changing stand; during the roll unloading process, the operator manually operates the manual hoist and hoists the old work roll on the roll changing stand to the work roll frame. However, the operator has the following problems in the actual operation process:

[0003] 1. The roll replacement mainly relies on manual labor, resulting in high labor intensity and low work efficiency;

[0004] 2. It is easy to affect the surface cleanliness of the roll after the sling contacts the surface of the work roll.

[0005] 3. During the hoisting process, the operator is closely combined with the machine, there are certain potential safety hazards.

[0006] Therefore, it is necessary to further improve the loading and unloading device and method for rolls. Summary of the Invention

[0007] The first technical problem to be solved by the present invention is to provide a loading and unloading device for rolls with high work efficiency, high safety and capable of avoiding the contact between the sling and the roll in view of the above-mentioned prior art situation.

[0008] The second technical problem to be solved by the present invention is to provide a loading and unloading method for a loading and unloading device for rolls in view of the above-mentioned prior art situation.

[0009] The technical solution adopted by the present invention to solve the first technical problem is as follows: The loading and unloading device for rolls includes:

[0010] A bracket is arranged on the ground. The bracket extends along the horizontal direction X. At least two rolls to be installed are arranged along the direction X below the bracket. The axial direction of the roll to be installed is Y, and the direction perpendicular to the directions X and Y is Z;

[0011] Characterized in that it further includes:

[0012] The roller transporting mechanism is movably connected to the bracket and can translate along the bracket. At the same time, the roller transporting mechanism can move relative to the bracket along directions X and Z and rotate along directions Y and Z. Driven by an external force, the roller transporting mechanism can transport the roller to be installed or the old roller to be replaced from the initial position to the final position along a preset path.

[0013] The control mechanism is arranged on the ground and is used for an operator to preset the coordinate values of the roller transporting mechanism. The coordinate values include the X coordinate, the Z coordinate, the Y rotation angle, and the Z rotation angle, so as to control the moving path of the roller transporting mechanism.

[0014] For the convenience of position adjustment, preferably, the roller transporting mechanism includes a first mounting plate movably connected to the bracket. A vertical portion extending along direction Z is movably connected to the first mounting plate. A transverse portion extending horizontally along direction Y is fixed to the bottom of the vertical portion. Clamping portions for clamping the roller are movably connected to both the head and the tail of the transverse portion. The clamping portions can be opened or closed under the drive of a cylinder. Among them, the first mounting plate can drive the transverse portion and the clamping portions to translate synchronously along direction X under the drive of an external force, so that the clamping portions and the transverse portion are adjusted to directly above the roller position of the roll changing stand. The clamping portions can be relatively opened and closed under the action of the cylinder, so as to facilitate the loosening or clamping action on the roller.

[0015] Furthermore, the roller transporting mechanism further includes a first driving member, a second driving member, a third driving member, and a fourth driving member. The first driving member is fixed to the bracket and can drive the vertical portion to move relative to the bracket along direction Z. The second driving member is fixed to the first mounting plate and can drive the whole roller transporting mechanism to move along direction X. The third driving member is arranged above the transverse portion and can drive the transverse portion and the clamping portions to rotate as a whole along the axis direction Y of the third driving member. The fourth driving member is arranged on the third driving member and can drive the transverse portion, the clamping portions, and the third driving member to rotate synchronously along its axis Z. Among them, the clamping portions in the roller transporting mechanism need to be accurately adjusted to a specified position to clamp the roller. In this application, multiple driving members are provided for the roller transporting mechanism to perform multi-dimensional adjustment. The first driving member and the second driving member are mainly responsible for the moving position adjustment in the X direction and the Z direction; the third driving member and the fourth driving member are mainly responsible for the rotation angle position adjustment in the Y direction and the Z direction.

[0016] For the convenience of transmission, preferably, a first slide rail extending along direction X is provided on the bracket. A sliding part slidably connected to the first slide rail is provided on one side of the first mounting plate facing the first slide rail. A second slide rail parallel to the first slide rail is also provided on the bracket. A transmission part drivingly connected to the second slide rail is provided on the second driving member. Among them, the first slide rail and the second slide rail on the bracket are arranged in parallel along direction X. A sliding part is provided on one side of the first mounting plate, and this sliding part is slidably connected to the first slide rail to drive the entire roller transporting mechanism to translate. The transmission part on the second driving member is a gear, and an engaging part matching the gear for driving is provided on the second slide rail, so as to facilitate the adjustment of the first mounting plate relative to the vertical part in direction X.

[0017] For the convenience of placing the rolling mill rolls, preferably, a roll changing rack and a roll frame are adjacently arranged below the bracket. The roll frame is used for placing the rolling mill rolls to be installed or the old rolling mill rolls after replacement. The roll changing rack is used for installing the rolling mill rolls to be installed. At least two roll positions are provided on both the roll changing rack and the roll frame. Among them, before the operation starts, multiple rolling mill rolls to be installed are arranged in the roll positions of the roll frame. The roller transporting mechanism transports the rolling mill rolls to be installed to the corresponding positions on the roll changing rack, and at the same time takes out the old rolling mill rolls on the roll changing rack and transports them to the roll positions on the roll frame.

[0018] For the realization of precise clamping of the rolling mill rolls, preferably, the roll changing device further includes a positioning mechanism for positioning the roll frame. The positioning mechanism includes a base arranged on the ground. The base is provided with a guide rail extending horizontally along direction Y. A second mounting plate is slidably connected to the guide rail. A first positioning member is provided on the side of the second mounting plate. A second positioning member cooperating with the first positioning member is provided on the side of the roll frame. A driving mechanism for driving the second mounting plate to translate is further provided on the second mounting plate. The driving mechanism can drive the second mounting plate to drive the first positioning member to translate to a specified position and engage with the second positioning member to achieve positioning. Among them, before the automatic loading and unloading operation of the rolling mill rolls, the roll frame needs to be placed at a specified position, so as to ensure that the control mechanism can control the roller transporting mechanism to move to a specified position to clamp the rolling mill rolls to be installed. During the positioning process, the first positioning member on the positioning mechanism and the second positioning member on the roll frame mainly cooperate with each other. The first positioning member and the second positioning member are provided with a matching part with concave-convex cooperation. When the driving mechanism drives the first positioning member to move along the guide rail until it engages with the second positioning member, the roll frame is located at the specified position.

[0019] For the realization of manual control, preferably, an adjusting member is movably connected to the bracket, and the adjusting member can be used by the operator to manually load and unload the rolling mill rolls. Among them, the loading and unloading of the rolling mill rolls can be carried out in two ways: automatic control and manual control. When the control mechanism is in a fault state, the operator can manually operate the adjusting member to load and unload the rolling mill rolls.

[0020] The technical solution adopted by the present invention to solve the second technical problem is as follows: For this loading and unloading method, it is characterized in that it includes the following roller loading steps:

[0021] S1. Debugging: The operator presets the coordinate values of the roller transporting mechanism in the control mechanism, including the X coordinate, Z coordinate, Y rotation angle, and Z rotation angle.

[0022] S2. Positioning: The driving mechanism drives the second mounting plate to translate along the guide rail until the first positioning member engages with the second positioning member, thereby accurately positioning the roller frame.

[0023] S3. Clamping the roller: The roller transporting mechanism moves downward along the Z direction under the drive of the first driving member. Under the action of the air cylinder, the clamping portions open outward and are located at both ends of the roller to be installed. Subsequently, the air cylinder drives the clamping portions to close and clamp the roller to be installed.

[0024] S4. Shifting: According to the coordinate values preset in the control mechanism, the first driving member drives the entire roller transporting mechanism to move upward along the Z direction. At the same time, the control mechanism controls the roller transporting mechanism to move along the first guide rail to above the roll changer. The first driving member drives the roller transporting mechanism to move downward along the Z direction to above the roll changer. Under the drives of the second driving member, the third driving member, and the fourth driving member, the control mechanism further adjusts the positions of the transverse portion and the clamping portion in the X direction and the rotation angles in the Y and Z directions according to the preset coordinate values, so that the roller A to be installed is aligned with the roll position of the roll changer.

[0025] S5. Installation: The air cylinder drives the clamping portions to open outward, and the roller to be installed falls into the roll position to complete the installation.

[0026] Furthermore, it also includes the following roller unloading steps:

[0027] S6. Adjustment: Under the drives of the third driving member and the fourth driving member, the control mechanism adjusts the rotation angles of the transverse portion and the clamping portion in the Y and Z directions, so that the old roller is aligned with the roll position of the roller frame.

[0028] S7. Extracting the roller: The air cylinder drives the clamping portions to close inward, thereby clamping the old roller located at the roll position of the roll changer.

[0029] S8. Shifting: The first driving member drives the entire roller transporting mechanism to move upward along the Z direction. Subsequently, the control mechanism controls the roller transporting mechanism to move along the first guide rail to above the roller frame. At this time, the first driving member drives the entire roller transporting mechanism to move downward along the Z direction to directly above the roller frame.

[0030] S9. Roll releasing: The air cylinder drives the clamping part to open outwards, and places the old roll on the corresponding roll position of the roll frame.

[0031] Compared with the prior art, the advantages of the present invention are as follows: By setting up a control mechanism, before the operation, the operator can pre-enter the coordinate values of the roll transporting mechanism. The coordinate values include the X coordinate, Z coordinate, Y rotation angle, and Z rotation angle, so that the roll transporting mechanism can move and rotate along a preset path according to a specified program, and finally complete the roll loading and unloading operations. The operation efficiency of the device is high and the operation safety is improved. At the same time, the control mechanism can accurately adjust the position of the roll transporting mechanism to avoid the contact between the lifting tool and the working surface of the roll, thereby preventing damage to the roll. The structure of the device is reasonably designed and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0033] Figure 2 is a front view of an embodiment of the present invention;

[0034] Figure 3 is a three-dimensional structural schematic diagram of the roll transporting mechanism in an embodiment of the present invention;

[0035] Figure 4 is a right view of the roll transporting mechanism in an embodiment of the present invention;

[0036] Figure 5 is a three-dimensional structural schematic diagram of the roll frame and the positioning mechanism in an embodiment of the present invention;

[0037] Figure 6 is Figure 5 a partial enlarged schematic diagram.

[0038] In the figure: 1. Bracket; 11. First slide rail; 12. Second slide rail; 13. Adjusting member; 2. Roll transporting mechanism; 21. First mounting plate; 211. Sliding part; 22. Vertical part; 23. Horizontal part; 231. Head; 232. Tail; 24. Clamping part; 25. First driving member; 26. Third driving member; 27. Fourth driving member; 3. Control mechanism; 4. Roll changing frame; 5. Roll frame; 51. Second positioning member; 6. Positioning mechanism; 61. Base; 62. Guide rail; 63. Second mounting plate; 64. First positioning member; 65. Driving mechanism; A. Roll to be installed; B. Old roll. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The present invention will be further described in detail below in conjunction with the embodiments of the drawings.

[0040] As Figures 1 to 6As shown, it is the best embodiment of the present invention. The device for loading and unloading rolls includes a bracket 1 arranged on the ground. In this embodiment, the bracket 1 is preferably a truss extending along the horizontal direction X. There are 12 rolls A to be installed arranged along the direction X below the bracket 1. The axis direction of the roll A to be installed is Y, and the direction perpendicular to the directions X and Y is Z. It also includes a roll transporting mechanism 2 movably connected to the bracket 1. The roll transporting mechanism 2 can perform translational motion along the bracket 1. At the same time, the roll transporting mechanism 2 can move relative to the bracket 1 along the directions X and Z and rotate along the directions Y and Z to accurately adjust the position. Driven by an external force, the roll transporting mechanism 2 can transport the roll A to be installed or the old roll B to be replaced from the initial position to the final position along a preset path. Among them, the movement path of the roll transporting mechanism 2 needs to be completed with the help of a control mechanism 3 arranged on the ground. The operator can preset the coordinate values of the roll transporting mechanism 2 on the control mechanism 3. These coordinate values involve the X coordinate, the Z coordinate, the Y rotation angle, and the Z rotation angle. The roll transporting mechanism 2 first moves along the X and Z directions, and then makes further adjustments according to the preset coordinate Y rotation angle and Z rotation angle, so as to achieve precise control of the movement path of the roll transporting mechanism 2.

[0041] Since the roll is prone to shift from the preset position during the operation, it is necessary to make corresponding adjustments to the position of the roll transporting mechanism 2. Referring to Figure 1 and Figure 2 , the roll transporting mechanism 2 includes a first mounting plate 21 movably connected to the bracket 1. A vertical part 22 extending along the direction Z is movably connected to the first mounting plate 21. A transverse part 23 extending horizontally along the direction Y is fixed to the bottom of the vertical part 22. Clamping parts 24 for clamping the roll are movably connected to both the head 231 and the tail 232 of the transverse part 23. The clamping parts 24 can be opened or closed under the drive of a cylinder. The first mounting plate 21 can drive the transverse part 23 and the clamping parts 24 to translate synchronously along the direction X under the drive of an external force, so that the clamping parts 24 and the transverse part 23 are adjusted to directly above the roll position of the roll changing rack 4. The clamping parts 24 can be relatively opened and closed under the action of the cylinder, so as to facilitate the clamping or gripping action on the roll.

[0042] Since the clamping part 24 in the roller transporting mechanism 2 needs to be precisely adjusted to a specified position to clamp the roller, four different driving parts are provided in this application for the multi-dimensional adjustment of the roller transporting mechanism 2. Among them, the first driving part 25 is fixed on the bracket 1 and can drive the vertical part 22 to move relative to the bracket 1 along the direction Z; the second driving part (not shown in the figure) is fixed on the first mounting plate 21 and can drive the first mounting plate 21 to make a front-back adjustment in the X direction relative to the vertical part 22; the third driving part 26 is arranged above the transverse part 23 and can drive the transverse part 23 and the clamping part 24 as a whole to rotate along the axis direction Y of the third driving part 26, so that the bottom of the clamping part 24 can be parallel to the roller; the fourth driving part 27 is arranged on the third driving part 26 and can drive the transverse part 23, the clamping part 24 and the third driving part 26 to rotate synchronously along its axis Z, so that the clamping part 24 can be aligned at both ends of the roller.

[0043] The roller transporting mechanism 2 needs to make a translational movement along the X direction on the bracket 1 to switch positions. The transmission mode between the roller transporting mechanism 2 and the bracket 1 can be in various forms, including chain drive, shaft drive, etc. In this embodiment, the preferred way is the slide rail drive with high service life. Three slide rails are arranged parallel to the X direction on the bracket 1, including the first slide rails 11 arranged on both sides and the second slide rail 12 located between the two first slide rails 11. A sliding part 211 is arranged on one side of the first mounting plate 21, and the sliding part 211 is slidably connected to the first slide rail 11 to drive the whole roller transporting mechanism 2 to make a translation. The transmission part 271 on the second driving part is a gear, and an engaging part matching the gear transmission is arranged on the second slide rail 12, so as to facilitate the adjustment of the first mounting plate 21 relative to the vertical part 22 in the X direction.

[0044] The process of loading and unloading the roller includes two steps: loading the roller and unloading the roller. The process of loading the roller requires transporting the roller A to be installed to the corresponding position of the rolling mill, while the process of changing the roller requires taking out the old roller B and transporting it to the corresponding position. In order to facilitate placing the roller A to be installed and the old roller B, in this embodiment, a roll changing rack 4 and two roller frames 5 are arranged under the bracket 1. Among them, the roller frames 5 are arranged on the ground and on both sides of the roll changing rack 4, and the roll changing rack 4 is placed on the support to form a certain preset distance from the ground. The roller frames 5 are used for placing the roller A to be installed or the old roller B after replacement, and the roll changing rack 4 is used for installing the roller A to be installed. Each roller frame 5 includes 6 roller positions, and each roll changing rack 4 includes 4 roller positions.

[0045] Reference Figure 5 and Figure 6, before the automatic loading and unloading of the roll, the roll frame 5 needs to be placed at a specified position, so as to ensure that the control mechanism 3 can control the roll transporting mechanism 2 to move to the specified position to clamp the roll A to be installed. The roll changing device in this embodiment further includes a positioning mechanism 6 for positioning the roll frame 5. The positioning mechanism 6 includes a base 61 arranged on the ground. The base 61 is horizontally extended along the Y direction with a guide rail 62. A second mounting plate 63 is slidably connected to the guide rail 62. A first positioning member 64 is arranged on the side of the second mounting plate 63. A second positioning member 51 that cooperates with the first positioning member 64 is arranged on the side of the roll frame 5. A driving mechanism 65 for driving the second mounting plate 63 to translate is further arranged on the second mounting plate 63. The driving mechanism 65 can drive the second mounting plate 63 to drive the first positioning member 64 to translate to a specified position and engage with the second positioning member 51 to achieve positioning. In this embodiment, the first positioning member 64 is provided with a concave portion, and the second positioning member 51 is provided with a convex portion. When the driving mechanism 65 drives the first positioning member 64 to move along the guide rail 62 until the concave portion and the convex portion of the first positioning member 64 and the second positioning member 51 are engaged, the roll frame 5 is located at the specified position.

[0046] Reference Figure 1 , the loading and unloading of the roll can be carried out in two ways: automatic control and manual control. When the control mechanism 3 is in a fault state, an adjusting member 13 is arranged on the bracket 1 in this embodiment. The adjusting member 13 is preferably a manual hoist, and the operator can manually operate the manual hoist to load and unload the roll.

[0047] This embodiment also provides a loading and unloading method of the above loading and unloading device, including the following roll loading steps:

[0048] S1. Debugging: The operator presets the coordinate values (including X coordinate, Z coordinate, Y rotation angle, and Z rotation angle) of the roll transporting mechanism 2 in the control mechanism 3;

[0049] S2. Positioning: The driving mechanism 65 drives the second mounting plate 63 to translate along the guide rail 62 until the first positioning member 64 engages with the second positioning member 51, so as to accurately position the roll frame 5;

[0050] S3. Clamping the roll: The roll transporting mechanism 2 moves downward along the Z direction under the drive of the first driving member 25. Under the action of the air cylinder, the clamping portions 24 open outward and are located at both ends of the roll A to be installed. Subsequently, the air cylinder drives the clamping portions 24 to close and clamp the roll A to be installed;

[0051] S4. Shifting: According to the preset coordinate values in the control mechanism 3, the first driving member 25 drives the entire roller transporting mechanism 2 to move upward in the Z direction. Meanwhile, the control mechanism 3 controls the roller transporting mechanism 2 to move along the first guide rail 62 to above the roll changing rack 4. Then the first driving member 25 drives the roller transporting mechanism 2 to move downward in the Z direction to above the roll changing rack 4. Under the drive of the second driving member, the third driving member 26 and the fourth driving member 27, the control mechanism 3 further adjusts the position of the transverse portion 23 and the clamping portion 24 in the X direction and the rotation angles in the Y and Z directions according to the preset coordinate values, so as to align the roll A to be installed with the roll position of the roll changing rack 4;

[0052] S5. Installation: The air cylinder drives the clamping portion 24 to open outward, and the roll A to be installed falls into the roll position to complete the installation.

[0053] There are also the following roll unloading steps:

[0054] S6. Adjustment: Under the drive of the third driving member 26 and the fourth driving member 27, the control mechanism 3 adjusts the rotation angles of the transverse portion 23 and the clamping portion 24 in the Y and Z directions, so as to align the old roll B with the roll position of the roll frame 5;

[0055] S7. Roll extraction: The air cylinder drives the clamping portion 24 to close inward, so as to clamp the old roll B located at the roll position of the roll changing rack 4;

[0056] S8. Shifting: The first driving member 25 drives the entire roller transporting mechanism 2 to move upward in the Z direction. Subsequently, the control mechanism 3 controls the roller transporting mechanism 2 to move along the first guide rail 62 to above the roll frame 5. At this time, the first driving member 25 drives the entire roller transporting mechanism 2 to move downward in the Z direction to directly above the roll frame 5;

[0057] S9. Roll placement: The air cylinder drives the clamping portion 24 to open outward, and places the old roll B on the corresponding roll position of the roll frame 5.

[0058] After the roll loading and unloading are completed, use a crane to lift the roll changing device off the site.

Claims

1. A loading and unloading device for a roller, comprising: A support (1) is arranged on the ground, the support (1) extends along a horizontal direction X, at least two rollers (A) to be installed are arranged below the support (1) along the direction X, the axis direction of the rollers (A) to be installed is Y, and the direction perpendicular to the directions X and Y is Z; Features: Also included are: A roller transport mechanism (2) is movably connected to the support (1) and can translate along the support (1). The roller transport mechanism (2) can move relative to the support (1) along directions X and Z and rotate in directions Y and Z. Driven by an external force, the roller transport mechanism (2) can transport the roller (A) to be installed or the old roller (B) to be replaced from an initial position to a final position along a preset path; The control mechanism (3) is arranged on the ground and is used for operators to pre-set the coordinate values ​​of the roller transport mechanism (2), the coordinate values ​​including the X coordinate, the Z coordinate, the Y rotation angle, and the Z rotation angle, so as to control the moving path of the roller transport mechanism (2).

2. The device for loading and unloading a roller according to claim 1, characterized in that: The roller transport mechanism (2) comprises a first mounting plate (21) movably connected to the bracket (1); a vertical portion (22) extending along a direction Z is movably connected to the first mounting plate (21); a transverse portion (23) extending transversely along a direction Y is fixed to the bottom of the vertical portion (22); a clamping portion (24) for clamping a roller is movably connected to the head portion (231) and the tail portion (232) of the transverse portion (23); and the clamping portion (24) can be opened or closed under the drive of a cylinder.

3. The device for loading and unloading a roller according to claim 2, characterized in that: The roller transport mechanism (2) further comprises a first driving member (25), a second driving member, a third driving member (26) and a fourth driving member (27); the first driving member (25) is fixed on the bracket (1) and can drive the vertical portion (22) to move relative to the bracket (1) along a direction Z; the second driving member is fixed on the first mounting plate (21) and can drive the roller transport mechanism (2) to move as a whole along a direction X; the third driving member (26) is arranged above the transverse portion (23) and can drive the transverse portion (23) and the clamping portion (24) to rotate as a whole along an axial direction Y of the third driving member (26); the fourth driving member (27) is arranged on the third driving member (26) and can drive the transverse portion (23), the clamping portion (24) and the third driving member (26) to rotate synchronously along their axes Z.

4. The device for loading and unloading a roller according to claim 3, characterized in that: The bracket (1) is provided with a first slide rail (11) extending along a direction X, and a sliding portion (211) slidably connected to the first slide rail (11) is provided on the side of the mounting plate facing the slide rail. The bracket (1) is also provided with a second slide rail (12) parallel to the first slide rail (11), and the second driving member is provided with a transmission portion transmission-connected to the second slide rail (12).

5. The device for loading and unloading a roller according to claim 4, characterized in that: A roll changing stand (4) and a roll frame (5) are disposed adjacent to each other below the support (1); the roll frame (5) is used for placing the roll (A) to be installed or the old roll (B) after replacement; the roll changing stand (4) is used for installing the roll (A) to be installed; and at least two roll positions are disposed on the roll changing stand (4) and the roll frame (5).

6. The device for loading and unloading a roller according to claim 5, characterized in that: The roller changing device also includes a positioning mechanism (6) for positioning the roller frame (5), the positioning mechanism (6) including a base (61) arranged on the ground, the base (61) being provided with a guide rail (62) extending transversely along a direction Y, a second mounting plate (63) being slidably connected to the guide rail (62), a first positioning member (64) being provided on the side of the second mounting plate (63), a second positioning member (51) cooperating with the first positioning member (64) being provided on the side of the roller frame (5), a driving mechanism (65) for driving the second mounting plate (63) to translate is also provided on the second mounting plate (63), the driving mechanism (65) being able to drive the second mounting plate (63) to translate the first positioning member (64) to a specified position and to engage with the second positioning member (51) to achieve positioning.

7. The device for loading and unloading a roller according to claim 1, characterized in that: The support (1) is also movably connected with an adjusting member (13), and the adjusting member (13) can be used by operators to manually load and unload the roller.

8. A method for loading and unloading a loading and unloading device according to any one of claims 1 to 7, characterized in that: The roller loading steps include: S1. Debugging: An operator presets the X coordinate and Z coordinate as well as the Y rotation angle and Z rotation angle of the roller transport mechanism (2) in the control mechanism (3); S2, positioning: the driving mechanism (65) drives the second mounting plate (63) to translate along the guide rail (62) until the first positioning member (64) engages with the second positioning member (51), thereby accurately positioning the roller frame (5); S3, roller clamping: the roller transport mechanism (2) moves downward along the direction Z under the drive of the first driving member (25), and the clamping part (24) opens outward and is located at both ends of the roller (A) to be installed under the action of the cylinder, and then the cylinder drives the clamping part (24) to close and clamp the roller (A) to be installed; S4, shifting: according to the preset coordinate values ​​in the control mechanism (3), the first driving member (25) drives the roller transport mechanism (2) to move upward along the direction Z as a whole, and at the same time, the control mechanism (3) controls the roller transport mechanism (2) to move along the first guide rail (62) to the top of the roller changing frame (4), and the first driving member (25) drives the roller transport mechanism (2) to move downward along the direction Z to the top of the roller changing frame (4). Under the drive of the second driving member, the third driving member (26) and the fourth driving member (27), the control mechanism (3) further adjusts the X-direction position and the rotation angle in the Y and Z directions of the transverse part (23) and the clamping part (24) according to the preset coordinate values, so that the roller (A) to be installed is aligned with the roller position of the roller changing frame (4); S5. Installation: The cylinder drives the clamping portion (24) to open outward, and the roller (A) to be installed falls into the roller position to complete the installation.

9. The loading and unloading method according to claim 8, characterized in that: The following roller unloading steps are also included: S6, adjustment: under the drive of the third driving member (26) and the fourth driving member (27), the control mechanism (3) adjusts the rotation angles of the transverse portion (23) and the clamping portion (24) in the Y and Z directions, so that the old roller (B) is aligned with the roller position of the roller frame (5); S7, roller withdrawal: the cylinder drives the clamping part (24) to close inward, thereby clamping the old roller (B) located on the roller position of the roller changing frame (4); S8, shifting: at the same time, the first driving member (25) drives the roller transport mechanism (2) to move upward along the direction Z as a whole, and then the control mechanism (3) controls the roller transport mechanism (2) to move along the first guide rail (62) to the top of the roller frame (5). At this time, the first driving member (25) drives the roller transport mechanism (2) to move downward along the direction Z as a whole to the top of the roller frame (5); S9, placing the roll: the cylinder drives the clamping part (24) to open outward, and places the old roll (B) on the corresponding roll position of the roll frame (5).

Images