A device for preventing tempering of a soluble magnesium alloy by hot rolling

Abstract

The present application relates to a kind of soluble magnesium alloy anti-temperature hot rolling device, belong to magnesium alloy processing technical field.It includes base, base is hollow structure;First mounting plate, slidingly penetrates the top side of base;Two first lifting cylinders, symmetrically fixedly connected in the bottom inner wall of one side of base, and the output of two first lifting cylinders all penetrates the top of base and is fixedly connected with the top of one side of first mounting plate.The present application is movably arranged by first mounting plate and second mounting plate, not only be convenient for adjusting the height of upper roller and lower roller, be convenient for adapting the installation of different needs, and cooperate with the adjustment of upper roller, can greatly improve the flexibility of use;It is also convenient for replacing upper roller and lower roller respectively, do not affect each other, whole replacement operation is simple, convenient, without the disassembly and assembly of whole device in large range, and operation saves time and effort, replacement efficiency is fast, unnecessary trouble is reduced, and the overall practicability is improved.

Description

A soluble magnesium alloy anti-temperature hot rolling device Technical Field

[0001] This invention belongs to the field of magnesium alloy processing technology and relates to a device for hot rolling of soluble magnesium alloys to prevent temperature changes. Background Technology

[0002] Magnesium alloys are alloys composed of magnesium as the base metal and other elements. Their characteristics include: low density, high specific strength, high specific modulus of elasticity, good heat dissipation, good vibration damping, greater impact load capacity than aluminum alloys, and good resistance to corrosion from organic substances and alkalis. The main alloying elements include aluminum, zinc, manganese, cerium, thorium, and small amounts of zirconium or cadmium. Currently, magnesium-aluminum alloys are the most widely used, followed by magnesium-manganese alloys and magnesium-zinc-zirconium alloys. They are mainly used in the aerospace, transportation, chemical, and rocket industries.

[0003] Among them, patent document CN102125932B discloses a magnesium alloy hot rolling apparatus, which consists of a reversible rolling mill, a conveyor roller table, a coiler, roll heaters, roller table heaters, and slab edge heaters. During the rolling of magnesium alloy sheets, the conveyor roller table where the rolls contact the magnesium alloy slab is preheated, and the slab is heated during the rolling process, controlling the temperature drop during rolling to roll the slab into a coil. Compared with traditional magnesium alloy rolling, it has the advantages of high production efficiency, high yield, and low cost.

[0004] Furthermore, patent document CN202377261U discloses a hot rolling apparatus for processing magnesium alloy plates, including a melting furnace, a feeder, a die, a rolling mill, and conveyor belts installed before and after the rolling mill. The feeder is connected to the inlet at the top of the melting furnace, and the bottom of the side wall of the melting furnace has an outlet. The die includes an upper die slider and a lower die slider, which are installed to block the outlet of the melting furnace. Molten magnesium alloy in the melting furnace can only flow out through a flat channel between the upper and lower die sliders. The starting end of the conveyor belt is located at the outlet of the flat channel between the upper and lower die sliders. The conveyor belt between the die and the rolling mill is installed in a temperature-controlled furnace, and a guide roller and a coiler are installed at the end of the conveyor belt. The conveyor belt between the rolling mill and the guide roller is installed in an annealing furnace. It has the advantages of reasonable design, simple structure, easy implementation, low manufacturing cost, low energy consumption, and high production efficiency.

[0005] In addition, patent document CN206509331U discloses a roll changing device and a rolling mill. The roll changing device includes a mounting base and a roll unit. The mounting base forms part of the mill frame and supports the roll unit. The roll unit includes a roll support and multiple rolls. The roll support has a processing channel, and the multiple rolls are rotatably arranged on the roll support around the processing channel to roll the workpiece passing through the processing channel. The roll support is detachably connected to the mounting base. This roll changing device can quickly change the rolls to match workpieces of different outer diameters, with short roll changing time, low labor intensity, simple operation, and improved safety during the roll changing process.

[0006] The first two patents (patent CN102125932B and patent CN202377261U) both use heaters or temperature-controlled furnaces to continuously heat and maintain the slab temperature before entering the rolling stage to prevent the slab from cooling down during transportation and affecting the subsequent rolling quality. However, the rolling mills used are both traditional hot rolling mills. Traditional hot rolling mills achieve the rolling and transportation effect through the relative rotation of two rolls. When rolling slabs of different thicknesses, the distance between the upper and lower rolls needs to be adjusted. When different rolls need to be replaced, or when rolls are damaged and need to be replaced, due to… Rolls are quite heavy, and changing them during conventional operations is quite troublesome. Due to the interaction between the frame and the upper and lower rolls, the operation is very time-consuming and labor-intensive. Although a later patent (patent publication number CN206509331U) can achieve rapid replacement of rolls, it replaces multiple rolls as a unit group, which shortens the replacement time but still cannot solve the need for replacing a single roll body. At the same time, this method requires the use of hoisting equipment for auxiliary operations, which is still relatively troublesome. Therefore, we propose a soluble magnesium alloy anti-temperature-variable hot rolling device to solve the above-mentioned problems. Summary of the Invention

[0007] In view of this, in order to solve the problem that the traditional method of changing rolls is quite troublesome and that the operation is very time-consuming and labor-intensive due to the mutual influence between the frame and the upper and lower rolls, the present invention provides a soluble magnesium alloy anti-temperature hot rolling device.

[0008] To achieve the above objectives, the present invention provides the following technical solution: including:

[0009] The base has a hollow structure.

[0010] The first mounting plate slides through the top side of the base;

[0011] Two first lifting cylinders are symmetrically fixedly connected to the bottom inner wall of one side of the base, and the output ends of the two first lifting cylinders pass through the top of the base and are fixedly connected to the top of one side of the first mounting plate.

[0012] Two sliding pillars slide symmetrically through the top of the base on the side away from the first mounting plate;

[0013] Two second lifting cylinders are symmetrically fixedly connected to the bottom inner wall of one side of the base, and the output ends of the two second lifting cylinders pass through the top of the base and are fixedly connected to the top of one side of the two sliding columns respectively.

[0014] The support slide is slidably connected between two sliding pillars, and the support slide is located inside the base;

[0015] The second mounting plate is fixedly connected to the top side of the supporting slide plate;

[0016] The clearance notch is located on the edge of the base near the sliding column, and both the supporting slide plate and the second mounting plate are used in conjunction with the clearance notch.

[0017] The upper and lower rolls are rotatably connected between the first mounting plate and the second mounting plate, with the upper roll located directly above the lower roll, and are used for hot rolling of magnesium alloys;

[0018] The drive mechanism, located on top of the support slide, is used to simultaneously drive the upper and lower rolls to rotate;

[0019] The cylinder is fixedly connected to the top of one side of the first mounting plate, and its output shaft is fixedly connected to the top of one side of the second mounting plate.

[0020] The support changing mechanism, located inside the base, is used to support the upper and lower rolls during replacement, facilitating the replacement process.

[0021] Furthermore, a first lower connecting sleeve is rotatably connected to one side bottom of the first mounting plate, and a second lower connecting sleeve is rotatably connected to one side bottom of the second mounting plate. Both ends of the lower roller are fixedly connected to a first connecting shaft, and the two first connecting shafts are respectively positioned and inserted into the first lower connecting sleeve and the second lower connecting sleeve.

[0022] Furthermore, both the first mounting plate and the second mounting plate have through holes on their adjacent sides. Connecting blocks are slidably connected inside the two through holes. The first upper connecting sleeve and the second upper connecting sleeve are respectively rotatably connected through the two connecting blocks. The second upper connecting sleeve is located on the second mounting plate. The two ends of the upper roller are respectively fixedly connected to the second connecting shaft and the third connecting shaft. The second connecting shaft is positioned and inserted into the first upper connecting sleeve, and the third connecting shaft is positioned and inserted into the second upper connecting sleeve.

[0023] Furthermore, the length of the third connecting shaft is greater than the length of the second connecting shaft, and the length of the second connecting shaft is the same as the length of the two first connecting shafts.

[0024] Furthermore, each of the two connecting blocks is rotatably connected to an adjusting screw, the top ends of which are threaded through the first mounting plate and the second mounting plate, respectively, and the top ends of the two adjusting screws are fixedly connected to a rotating handle.

[0025] Furthermore, the driving mechanism includes a drive motor fixedly connected to the top of the supporting slide plate. The output end of the drive motor is vertically fixedly connected to an inner spline bushing. The top end of the inner spline bushing is slidably connected to an outer spline shaft. A fourth bevel gear is fixedly sleeved on the top end of the outer spline shaft. A horizontal plate is fixedly connected to the top of one side of the connecting block on the second mounting plate, and the top end of the outer spline shaft is rotatably connected to the bottom of the horizontal plate. A second bevel gear that meshes with the fourth bevel gear is fixedly connected to the end of the second upper connecting sleeve away from the upper roller. A first bevel gear is fixedly connected to the end of the second lower connecting sleeve away from the lower roller. A third bevel gear that meshes with the first bevel gear is fixedly sleeved on the output shaft of the drive motor.

[0026] Furthermore, the tray-changing mechanism includes a sliding opening on one side of the top of the base, a sliding plate slidably connected inside the sliding opening, two symmetrical moving slots on the top of the sliding plate, a support block slidably connected inside each of the two moving slots, an arc-shaped groove on the top of the support block, and two handles symmetrically fixedly connected to one side of the sliding plate.

[0027] Furthermore, multiple balls are embedded in the bottom of both support blocks, and the balls roll in contact with the bottom wall of the moving groove.

[0028] Furthermore, the base has two symmetrically arranged support blocks located directly below the sliding opening inside. The bottom of each support block is symmetrically fixedly connected to two vertical rods, and the bottom ends of the two vertical rods are fixedly connected to the bottom inner wall of the base.

[0029] Furthermore, the base has two symmetrically arranged triangular blocks located directly below the sliding opening. The two triangular blocks are located above the two support blocks. On the sides of the two triangular blocks that are far apart from each other, multiple connecting slide rods are fixedly connected at equal intervals. One end of the connecting slide rod is slidably fitted with a fixing sleeve. One end of the fixing sleeve is fixedly connected to the inner wall of one side of the base. The same return spring is fixedly connected between one end of the connecting slide rod and the inner wall of one end of the fixing sleeve.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. The soluble magnesium alloy anti-temperature hot rolling device disclosed in this invention enables the rapid installation and disassembly of the lower and upper rolls by means of two first connecting shafts respectively engaging with the first lower connecting sleeve and the second lower connecting sleeve, and by means of the second connecting shaft and the third connecting shaft respectively engaging with the first upper connecting sleeve and the second upper connecting sleeve. Furthermore, during the installation and disassembly process, no additional disassembly or assembly operation is required on the gear transmission part, thus improving the convenience and practicality of replacement.

[0032] 2. The soluble magnesium alloy anti-temperature hot rolling device disclosed in this invention can adjust the height of the connecting block by rotating the handle to drive the adjusting screw, thereby adjusting the height position of the upper roll and thus adjusting the distance between the upper roll and the lower roll, which is convenient for rolling slabs of different thicknesses. At the same time, the height of the first mounting plate and the second mounting plate can be adjusted by activating the first lifting cylinder and the second lifting cylinder, thereby adjusting the overall height of the upper roll and the lower roll, which is convenient for adapting to different installation needs and improving the flexibility of use.

[0033] 3. The soluble magnesium alloy anti-temperature hot rolling device disclosed in this invention, by setting the length of the first connecting shaft to be shorter than the length of the third connecting shaft, allows one of the first connecting shafts to disengage from the positioning insertion of the second lower connecting sleeve first, so that the lower roll can be removed for replacement first. At this time, the third connecting shaft is still in the positioning insertion with the second upper connecting sleeve. Therefore, when replacing the lower roll, the upper roll will not fall off, which facilitates the replacement of the lower roll separately.

[0034] 4. The soluble magnesium alloy anti-temperature hot rolling device disclosed in this invention can lower the lower roll and the upper roll by activating the first lifting cylinder and the second lifting cylinder to drive the first mounting plate and the second mounting plate to move downwards simultaneously. After the lower roll moves down to the top of the two support blocks, it can be positioned and supported by the arc-shaped slot. The sliding of the support blocks facilitates the pushing and removal of the lower roll. At this time, the lower roll can be pulled out by pulling the sliding plate outward with the handle, which is convenient for replacement and removal. The whole operation is simple and convenient.

[0035] 5. The soluble magnesium alloy anti-temperature-variable hot rolling device disclosed in this invention involves pulling a sliding plate outward to expose a sliding opening, allowing the lower roller to pass through the sliding opening and enter the interior of the base when it is lowered. The lower roller is supported and placed by two support blocks. Then, through the gap between the lower and upper rollers, the sliding plate is pushed back and positioned below the upper roller. The upper roller is then adjusted to move downward onto the support block, facilitating the replacement of the upper roller. Since the lower roller is supported by the support blocks, it will not fall off after the first connecting shaft disengages from the positioning insertion of the second lower connecting sleeve. At the same time, it makes contact with the inclined surface of the triangular block. The inclined surface pushes the two triangular blocks to both sides, and the compression of the two triangular blocks can position and place the lower roller, thereby achieving a better placement effect, facilitating precise docking between the first connecting shaft and the second lower connecting sleeve, and improving the stability of the connection.

[0036] The present invention, through the movable arrangement of the first and second mounting plates, not only facilitates the adjustment of the height of the upper and lower rollers, making it easy to adapt to different installation needs, but also greatly improves the flexibility of use by coordinating the adjustment of the upper roller; at the same time, it also facilitates the separate replacement of the upper and lower rollers without affecting each other. The entire replacement operation is simple and convenient, without the need for extensive disassembly and assembly of the entire device, and the operation is time-saving and labor-saving, with fast replacement efficiency, reducing unnecessary troubles and improving the overall practicality.

[0037] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0038] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0039] Figure 1 is a front perspective view of the overall structure of a soluble magnesium alloy anti-temperature hot rolling device according to the present invention.

[0040] Figure 2 is a rear perspective view of the overall structure of a soluble magnesium alloy anti-temperature hot rolling device according to the present invention.

[0041] Figure 3 is a perspective view of the connection structure between the upper and lower rolls of a soluble magnesium alloy anti-temperature hot rolling device according to the present invention.

[0042] Figure 4 is a perspective view of the gear drive structure of a soluble magnesium alloy anti-temperature hot rolling device according to the present invention.

[0043] Figure 5 is a perspective view of the first mounting plate connection structure of a soluble magnesium alloy anti-temperature hot rolling device of the present invention.

[0044] Figure 6 is a perspective view of the upper and lower rolls of a soluble magnesium alloy anti-temperature hot rolling device according to the present invention.

[0045] Figure 7 is a perspective view of the sliding plate structure of a soluble magnesium alloy anti-temperature hot rolling device according to the present invention.

[0046] Figure 8 is a bottom perspective view of the support block structure of a soluble magnesium alloy anti-temperature hot rolling device according to the present invention.

[0047] Figure 9 is a perspective view of the cooperation structure of the support block and triangular block of the soluble magnesium alloy anti-temperature hot rolling device of the present invention.

[0048] Figure 10 is a side sectional view of the fixed sleeve connection structure of a soluble magnesium alloy anti-temperature hot rolling device according to the present invention.

[0049] Figure 11 is a front sectional view of the overall structure of a soluble magnesium alloy anti-temperature hot rolling device according to the present invention.

[0050] Figure 12 is a perspective view of the base structure of the soluble magnesium alloy anti-temperature hot rolling device after the sliding plate is pulled open.

[0051] Reference numerals: 1. Base; 2. First mounting plate; 3. Clearance notch; 4. Upper roller; 5. Push cylinder; 6. Second mounting plate; 7. Through hole; 8. Lower roller; 9. First connecting shaft; 10. First lower connecting sleeve; 11. Connecting block; 12. First upper connecting sleeve; 13. Adjusting screw; 14. Rotating handle; 15. Second connecting shaft; 16. Third connecting shaft; 17. First lifting cylinder; 18. Second lower connecting sleeve; 19. First bevel gear; 20. Second upper connecting sleeve; 21. 21. Second bevel gear; 22. Sliding column; 23. Supporting slide plate; 24. Second lifting cylinder; 25. Drive motor; 26. Third bevel gear; 27. Inner spline bushing; 28. Outer spline shaft; 29. ​​Fourth bevel gear; 30. Horizontal plate; 31. Sliding port; 32. Sliding plate; 33. Moving groove; 34. Support block; 35. Ball bearing; 36. Arc-shaped groove; 37. Handle; 38. Vertical rod; 39. Support block; 40. Fixing sleeve; 41. Connecting slide rod; 42. Return spring; 43. Triangular block. Detailed Implementation

[0052] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0053] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0054] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they 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 orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0055] Example 1: As shown in Figures 1-2, a soluble magnesium alloy anti-temperature-change hot rolling device includes a base 1, a first mounting plate 2, a clearance notch 3, an upper roll 4, a pushing cylinder 5, a second mounting plate 6, a lower roll 8, two first lifting cylinders 17, two sliding columns 22, a support slide plate 23, and two second lifting cylinders 24. The base 1 has a hollow structure. The first mounting plate 2 slides through one side of the top of the base 1. The two first lifting cylinders 17 are symmetrically fixedly connected to the inner wall of the bottom of one side of the base 1, and the output ends of the two first lifting cylinders 17 both penetrate through the top of the base 1 and are fixedly connected to the top of one side of the first mounting plate 2. The two sliding columns 22 slide symmetrically through the top of the base 1 on the side away from the first mounting plate 2. The two second lifting cylinders 24 are symmetrically fixedly connected to one side of the base 1. The bottom inner wall, and the output ends of the two second lifting cylinders 24 both pass through the top of the base 1 and are fixedly connected to the top of one side of the two sliding columns 22 respectively. The support plate 23 is slidably connected between the two sliding columns 22 and the support plate 23 is located inside the base 1. The second mounting plate 6 is fixedly connected to the top side of the support plate 23. The clearance notch 3 is opened on the edge of the base 1 near the sliding column 22, and the support plate 23 and the second mounting plate 6 are both used in conjunction with the clearance notch 3. The upper roller 4 and the lower roller 8 are rotatably connected between the first mounting plate 2 and the second mounting plate 6, and the upper roller 4 is located directly above the lower roller 8. It is used for hot rolling of magnesium alloy. The push cylinder 5 is fixedly connected to the top of one side of the first mounting plate 2, and its output shaft is fixedly connected to the top of one side of the second mounting plate 6.

[0056] In one aspect of this embodiment, as shown in Figures 3-6, a first lower connecting sleeve 10 is rotatably connected to one side of the bottom of the first mounting plate 2, and a second lower connecting sleeve 18 is rotatably connected to one side of the bottom of the second mounting plate 6. Both ends of the lower roller 8 are fixedly connected to first connecting shafts 9, and the two first connecting shafts 9 are respectively positioned and inserted into the first lower connecting sleeve 10 and the second lower connecting sleeve 18. Positioning and inserting the two first connecting shafts 9 into the first lower connecting sleeve 10 and the second lower connecting sleeve 18 allows for quick installation and removal of the lower roller 8, and enables the lower roller 8 to rotate via the first lower connecting sleeve 10 and the second lower connecting sleeve 18.

[0057] In one aspect of this embodiment, as shown in Figures 3-6, through holes 7 are provided on the sides of the first mounting plate 2 and the second mounting plate 6 that are close to each other. Connecting blocks 11 are slidably connected inside each of the two through holes 7. A first upper connecting sleeve 12 and a second upper connecting sleeve 20 are respectively rotatably connected through the interior of each connecting block 11. The second upper connecting sleeve 20 is located on the second mounting plate 6. A second connecting shaft 15 and a third connecting shaft 16 are respectively fixedly connected to both ends of the upper roller 4. The second connecting shaft 15 is positioned and inserted into the first upper connecting sleeve 12, and the third connecting shaft 16 is positioned and inserted into the second upper connecting sleeve 20. By positioning and inserting the second connecting shaft 15 into the first upper connecting sleeve 12 and the third connecting shaft 16 into the second upper connecting sleeve 20, the upper roller 4 can be quickly installed and disassembled, and the upper roller 4 can be rotated by the first upper connecting sleeve 12 and the second upper connecting sleeve 20.

[0058] In one aspect of this embodiment, as shown in Figures 1-4, adjusting screws 13 are rotatably connected to the tops of both connecting blocks 11. The top ends of the two adjusting screws 13 are threaded through the first mounting plate 2 and the second mounting plate 6, respectively. A rotating handle 14 is fixedly connected to the top end of each adjusting screw 13. By rotating the handle 14, the adjusting screws 13 can be rotated, thereby adjusting the height of the connecting blocks 11, and thus adjusting the height position of the upper roller 4. This adjusts the distance between the upper roller 4 and the lower roller 8, facilitating the rolling of slabs of different thicknesses.

[0059] Example 2: This example is a further improvement on the previous example: As shown in Figure 6, the length of the third connecting shaft 16 is greater than the length of the second connecting shaft 15, and the length of the second connecting shaft 15 is the same as the length of the two first connecting shafts 9. Since the lower roller 8 is located above the upper roller 4, in order to facilitate the separate replacement of the two rollers, the push cylinder 5 is first started to push the second mounting plate 6 to move laterally a certain distance. The second mounting plate 6 drives the second lower connecting sleeve 18 and the second upper connecting sleeve 20 to move simultaneously. Since the length of the first connecting shaft 9 is shorter than the length of the third connecting shaft 16, one of the first connecting shafts 9 will first disengage from the positioning insertion of the second lower connecting sleeve 18. At this time, the lower roller 8 can be removed for replacement, while the third connecting shaft 16 is still in the positioning insertion with the second upper connecting sleeve 20. Therefore, when replacing the lower roller 8, the upper roller 4 will not fall off. When it is necessary to replace the upper roller 4, the push cylinder 5 is started again to push the second mounting plate 6 to move laterally, so that the third connecting shaft 16 disengages from the positioning insertion of the second upper connecting sleeve 20.

[0060] Example 3: This example is a further improvement on the previous example: As shown in Figures 1-4, the hot rolling device further includes a drive mechanism located on top of the support slide plate 23, used to simultaneously drive the upper roll 4 and the lower roll 8 to rotate; the drive mechanism includes a drive motor 25 fixedly connected to the top of the support slide plate 23, the output end of the drive motor 25 is vertically fixedly connected to an inner spline bushing 27, the top end of the inner spline bushing 27 is slidably connected to an outer spline shaft 28, and the top end of the outer spline shaft 28 is fixedly sleeved with a fourth... A bevel gear 29 is fixedly connected to a horizontal plate 30 on one side of the connecting block 11 on the second mounting plate 6. The top of the external spline shaft 28 is rotatably connected to the bottom of the horizontal plate 30. A second bevel gear 21, which meshes with the fourth bevel gear 29, is fixedly connected to the end of the second upper connecting sleeve 20 away from the upper roller 4. A first bevel gear 19 is fixedly connected to the end of the second lower connecting sleeve 18 away from the lower roller 8. A third bevel gear 26, which meshes with the first bevel gear 19, is fixedly sleeved on the output shaft of the drive motor 25. When the drive motor 25 is started, the meshing of the first bevel gear 19 and the third bevel gear 26 drives the second lower connecting sleeve 18 to rotate, thereby driving the lower roller 8 to rotate. At the same time, the drive motor 25 drives the inner spline shaft sleeve 27 to rotate, and at the same time drives the fourth bevel gear 29 to rotate through the external spline shaft 28. Through meshing with the second bevel gear 21, the fourth bevel gear 29 drives the second upper connecting sleeve 20 to rotate, thereby driving the upper roller 4 to rotate relative to it, realizing the rolling and conveying of the slab.

[0061] Example 4: This example is a further improvement on the previous example: As shown in Figures 1-2 and 7, the hot rolling device also includes a support changing mechanism located in the base 1, which is used to support the upper roll 4 and the lower roll 8 when they are replaced, making the replacement convenient; the support changing mechanism includes a sliding opening 31 on one side of the top of the base 1, a sliding plate 32 is slidably connected inside the sliding opening 31, two moving grooves 33 are symmetrically opened on the top of the sliding plate 32, and a support block 34 is slidably connected inside the two moving grooves 33. An arc-shaped groove 36 is opened on the top of the support block 34, and two handles 37 are symmetrically fixedly connected to one side of the sliding plate 32. Activating the first lifting cylinder 17 and the second lifting cylinder 24 simultaneously moves the first mounting plate 2 and the second mounting plate 6 up and down. This not only adjusts the rolling height of the upper roll 4 and the lower roll 8 for different installation needs, but also lowers the lower roll 8 and the upper roll 4. After the lower roll 8 moves to the top of the two support blocks 34, it can be positioned and supported through the arc-shaped slot 36. Then, activating the push cylinder 5 pushes the second mounting plate 6 laterally, causing one of the first connecting shafts 9 to disengage from the positioning insertion of the second lower connecting sleeve 18. Then, pushing the lower roll 8 moves, causing the other first connecting shaft 9 to disengage from the positioning insertion of the first lower connecting sleeve 10, utilizing the support blocks... The sliding of 34 facilitates the pushing of the lower roller 8. At this time, the sliding plate 32 can be pulled outward by the handle 37 to pull out the lower roller 8 for easy replacement and removal. Similarly, after the lower roller 8 is disassembled and removed, the upper roller 4 is lowered to the top of the two support blocks 34. Then, the pushing cylinder 5 is activated to disengage the third connecting shaft 16 from the positioning insertion of the second upper connecting sleeve 20. Then, the upper roller 4 is pushed to move, so that the second connecting shaft 15 disengages from the positioning insertion of the first upper connecting sleeve 12. Then, the sliding plate 32 is pulled again to remove it. The whole operation is very convenient and does not require reinstallation of the gear transmission part. Only the corresponding roller needs to be replaced.

[0062] In one aspect of this embodiment, as shown in FIG8, a plurality of balls 35 are embedded in the bottom of both support blocks 34, and the balls 35 roll in contact with the bottom wall of the moving groove 33. The rolling of the balls 35 in the moving groove 33 makes it easier for the support blocks 34 to move, thereby making it easier to push the upper roller 4 and the lower roller 8 to move.

[0063] Example 5: This example is a further improvement on the previous example: As shown in Figures 9 and 11, the base 1 has two symmetrically arranged support blocks 39 located directly below the sliding opening 31. Two vertical rods 38 are symmetrically fixedly connected to the bottom of each support block 39, and the bottom ends of the two vertical rods 38 are fixedly connected to the inner wall of the bottom of the base 1. When only the upper roller 4 needs to be replaced, instead of replacing the lower roller 8, to avoid removing the lower roller 8 and reduce inconvenience, the sliding plate 32 can be pulled outwards to expose the sliding opening 31. This allows the lower roller 8 to pass through the sliding opening 31 and enter the interior of the base 1, supported by the two support blocks 39. Then, through the gap between the lower roller 8 and the upper roller 4, the sliding plate 32 is pushed back and positioned below the upper roller 4. This process can be adjusted appropriately according to the distance between the upper roller 4 and the lower roller 8. The upper roller 4 is adjusted upward by adjusting screw 13 so that the gap is large enough for the sliding plate 32 to pass through. Then, the upper roller 4 is adjusted downward by adjusting screw 13 onto the support block 34, which facilitates the replacement of the upper roller 4. Since the lower roller 8 is supported by the support block 39, the lower roller 8 will not fall off after the first connecting shaft 9 is disengaged from the positioning insertion of the second lower connecting sleeve 18. After the second mounting plate 6 is reset, the second lower connecting sleeve 18 can be automatically repositioned and inserted into the first connecting shaft 9, which facilitates the automatic connection of the lower roller 8.

[0064] Example 6: This example is a further improvement on the previous example: As shown in Figures 9-12, two triangular blocks 43 are symmetrically arranged inside the base 1, located directly below the sliding port 31. The two triangular blocks 43 are located above the two support blocks 39. Multiple connecting slide rods 41 are fixedly connected at equal intervals on the sides of the two triangular blocks 43 that are far apart from each other. A fixing sleeve 40 is slidably sleeved on one end of the connecting slide rod 41. One end of the fixing sleeve 40 is fixedly connected to the inner wall of one side of the base 1. The same return spring 42 is fixedly connected between one end of the connecting slide rod 41 and the inner wall of one end of the fixing sleeve 40. When the lower roller 8 moves down into the base 1, it first contacts the inclined surface of the triangular block 43. Then, the inclined surface pushes the two triangular blocks 43 to both sides, and the connecting slide rod 41 squeezes the return spring 42. At this time, when the lower roller 8 is supported on the support block 39, the lower roller 8 can be positioned by the squeezing of the two triangular blocks 43, thereby achieving a better placement effect and facilitating the precise docking between the first connecting shaft 9 and the second lower connecting sleeve 18, thus improving the stability of the connection.

[0065] Working principle: First, rotating the handle 14 drives the adjusting screw 13 to rotate, which adjusts the height of the connecting block 11, and thus the height position of the upper roller 4. This adjusts the distance between the upper roller 4 and the lower roller 8, facilitating the rolling of slabs of different thicknesses. After adjusting the height of the upper roller 4, the drive motor 25 is started. Through the meshing of the first bevel gear 19 and the third bevel gear 26, the second lower connecting sleeve 18 is driven to rotate, which in turn drives the lower roller 8 to rotate. Simultaneously, the drive motor 25 drives the inner spline bushing 27 to rotate, and through the outer spline shaft 28, it drives the fourth bevel gear 29 to rotate. Through its meshing with the second bevel gear 21, the fourth upper connecting sleeve 20 is driven to rotate, which in turn drives the upper roller 4 to rotate relative to it, realizing the rolling and conveying of the slab. When adjusting the height of the upper roller 4, the horizontal plate 30 can drive the fourth bevel gear 29 and the second bevel gear 21 to move down synchronously, keeping them in a meshing state and not affecting the rotation of the upper roller 4.

[0066] When the lower roller 8 needs to be replaced, firstly, simultaneously activate the first lifting cylinder 17 and the second lifting cylinder 24 to move the first mounting plate 2 and the second mounting plate 6 downwards. After the lower roller 8 is moved to the top of the two support blocks 34, it can be positioned and supported through the arc-shaped slot 36. Then, activate the pushing cylinder 5 to push the second mounting plate 6 laterally, causing one of the first connecting shafts 9 to disengage from the positioning insertion of the second lower connecting sleeve 18. Then, push the lower roller 8 to move, causing the other first connecting shaft 9 to disengage from the positioning insertion of the first lower connecting sleeve 10. By utilizing the sliding of the support block 34, it is easy to push the lower roller 8. At this time, the sliding plate 32 can be pulled outwards by the handle 37 to pull out the lower roller 8 for easy replacement and removal. Conversely, place the new one on the two support blocks 34, and then use the sliding plate 32 to push the new lower roller 8 inwards, and then install it in the reverse order.

[0067] When the upper roller 4 needs to be replaced, the sliding plate 32 can be pulled outward to expose the sliding opening 31, allowing the lower roller 8 to pass through the sliding opening 31 and enter the interior of the base 1. The lower roller 8 is then supported by two support blocks 39. The lower roller 8 first contacts the inclined surface of the triangular block 43, and then the inclined surface pushes the two triangular blocks 43 to both sides. The connecting slide rod 41 compresses the return spring 42. At this point, with the lower roller 8 supported on the support blocks 39, the compression of the two triangular blocks 43 positions the lower roller 8. Then, through the gap between the lower roller 8 and the upper roller 4, the sliding plate 32 is pushed back and positioned below the upper roller 4. This process can be adjusted appropriately according to the distance between the upper roller 4 and the lower roller 8. This can be done by first adjusting the screw 13... The upper roller 4 is adjusted upwards to allow the sliding plate 32 to pass through the gap. Then, the upper roller 4 is adjusted downwards onto the support block 34 via the adjusting screw 13, facilitating the replacement of the upper roller 4. Since the lower roller 8 is supported by the support block 39 and positioned by two triangular blocks 43, the lower roller 8 will not fall off after the first connecting shaft 9 disengages from the positioning insertion of the second lower connecting sleeve 18. After the second mounting plate 6 is reset, the second lower connecting sleeve 18 can automatically reposition and insert itself onto the first connecting shaft 9, facilitating the automatic connection of the lower roller 8. After replacing the upper roller 4 using the same replacement method as the lower roller 8, the first lifting cylinder 17 and the second lifting cylinder 24 are activated again to move the first mounting plate 2 and the second mounting plate 6 upwards simultaneously, adjusting to the required installation height.

[0068] However, as is well known to those skilled in the art, the working principles and wiring methods of the push cylinder 5, the first lifting cylinder 17, the second lifting cylinder 24 and the drive motor 25 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A soluble magnesium alloy anti-temperature-change hot rolling device, comprising: a base, the base having a hollow structure; a first mounting plate, slidably penetrating one side of the top of the base; two first lifting cylinders, symmetrically fixedly connected to the inner wall of the bottom of one side of the base, and the output ends of both first lifting cylinders penetrating the top of the base and fixedly connected to the top of one side of the first mounting plate; two sliding columns, symmetrically slidingly penetrating the top of the base away from the first mounting plate; two second lifting cylinders, symmetrically fixedly connected to the inner wall of the bottom of one side of the base, and the output ends of both second lifting cylinders penetrating the top of the base and respectively fixedly connected to the top of one side of the two sliding columns; a supporting slide plate, slidably connected between the two sliding columns, and the supporting slide plate being located inside the base; and a second mounting plate fixedly connected to one side of the top of the supporting slide plate, characterized in that... Also includes: The clearance notch is opened on the edge of the base near the sliding column, and the support slide plate and the second mounting plate are used in connection with the clearance notch; the upper roll and the lower roll are rotatably connected between the first mounting plate and the second mounting plate, and the upper roll is located directly above the lower roll, for hot rolling of magnesium alloys; The drive mechanism, located on top of the support slide, is used to simultaneously drive the upper and lower rolls to rotate; A push cylinder is fixedly connected to the top of one side of the first mounting plate, and its output shaft is fixedly connected to the top of one side of the second mounting plate. A roller changing mechanism, located inside the base, is used to support the upper and lower rollers during replacement, facilitating the change. The drive mechanism includes a drive motor fixedly connected to the top of the support slide plate. An inner splined bushing is vertically fixedly connected to the output end of the drive motor. An outer splined shaft is slidably connected to the top of the inner splined bushing. A fourth bevel gear is fixedly sleeved on the top of the outer splined shaft. A horizontal plate is fixedly connected to the top of one side of the connecting block on the second mounting plate, and the top of the outer splined shaft is rotatably connected to the bottom of the horizontal plate. A second bevel gear, meshing with the fourth bevel gear, is fixedly connected to the end of the second upper connecting sleeve away from the upper roller. A first bevel gear is fixedly connected to the end of the second lower connecting sleeve away from the lower roller. A third bevel gear, meshing with the first bevel gear, is fixedly sleeved on the output shaft of the drive motor. The roller changing mechanism... The mechanism includes a sliding opening on one side of the top of the base. A sliding plate is slidably connected inside the sliding opening. Two moving slots are symmetrically opened on the top of the sliding plate. Support blocks are slidably connected inside each of the two moving slots. An arc-shaped groove is opened on the top of each support block. Two handles are symmetrically fixedly connected to one side of the sliding plate. Two support blocks are symmetrically arranged inside the base, located directly below the sliding opening. Two vertical rods are symmetrically fixedly connected to the bottom of each support block. The bottom ends of the two vertical rods are fixedly connected to the bottom inner wall of the base. Two triangular blocks are symmetrically arranged inside the base, located directly below the sliding opening. The two triangular blocks are located above the two support blocks. Multiple connecting slide rods are equidistantly fixedly connected to the sides of the two triangular blocks that are far apart from each other. A fixing sleeve is slidably fitted onto one end of each connecting slide rod. One end of the fixing sleeve is fixedly connected to one side inner wall of the base. A return spring is fixedly connected between one end of the connecting slide rod and the inner wall of one end of the fixing sleeve.

2. The soluble magnesium alloy anti-temperature hot rolling device as described in claim 1, characterized in that, A first lower connecting sleeve is rotatably connected through one side of the bottom of the first mounting plate, and a second lower connecting sleeve is rotatably connected through one side of the bottom of the second mounting plate. Both ends of the lower roller are fixedly connected to a first connecting shaft, and the two first connecting shafts are respectively positioned and inserted into the first lower connecting sleeve and the second lower connecting sleeve.

3. The soluble magnesium alloy anti-temperature hot rolling device as described in claim 2, characterized in that, Both the first mounting plate and the second mounting plate have through holes on their adjacent sides. Connecting blocks are slidably connected inside the two through holes. A first upper connecting sleeve and a second upper connecting sleeve are respectively rotatably connected through the two connecting blocks. The second upper connecting sleeve is located on the second mounting plate. A second connecting shaft and a third connecting shaft are respectively fixedly connected to both ends of the upper roller. The second connecting shaft is positioned and inserted into the first upper connecting sleeve, and the third connecting shaft is positioned and inserted into the second upper connecting sleeve.

4. The soluble magnesium alloy anti-temperature hot rolling device as described in claim 3, characterized in that, The length of the third connecting shaft is greater than the length of the second connecting shaft, and the length of the second connecting shaft is the same as the length of the two first connecting shafts.

5. A soluble magnesium alloy anti-temperature hot rolling device as described in claim 3 or 4, characterized in that, The tops of both connecting blocks are rotatably connected to adjusting screws, the top ends of the two adjusting screws are threaded through the first mounting plate and the second mounting plate respectively, and the top ends of the two adjusting screws are fixedly connected to rotating handles.

6. The soluble magnesium alloy anti-temperature hot rolling device as described in claim 5, characterized in that, The bottom of each of the two support blocks is embedded with multiple balls, and the balls roll in contact with the bottom wall of the moving groove.

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