Magnesium alloy plate width-limiting straightening equipment

Abstract

The invention relates to the technical field of straightening equipment, in particular to magnesium alloy plate width-limiting straightening equipment which comprises a rack, and a guide rail, a straightening mechanism, a lower straightening roller set, an upper straightening roller set and a linear driving mechanism are arranged on the rack. The middle part of the rack is hollow to form a working cavity, and the two guide rails are arranged in parallel at an interval; the straightening mechanism comprises a width limiting die and a straightening die; the width limiting die is located on the inner sides of the two guide rails and is in sliding connection with the two guide rails. The straightening die is located on the upper side of the width limiting die and matched with the width limiting die to conduct width limiting straightening. The lower straightening roller set is located at the bottom of the working cavity and supports the width limiting die from the lower portion. The two upper straightening roller sets are arranged at intervals and located on the two sides of the guide rail in the length direction correspondingly, and the two upper straightening roller sets press the straightening die from the two sides. The linear driving mechanism is located above the guide rail and connected with the straightening die. By the adoption of the scheme, the magnesium alloy plate can be subjected to width-limited straightening.

Description

Technical Field

[0001] The present invention relates to the technical field of straightening equipment, and particularly to a width-limited straightening equipment for magnesium alloy sheets. Background Art

[0002] Magnesium alloys have excellent properties such as low density, high specific strength and specific stiffness, and good electromagnetic shielding performance, and are widely used in the fields of machinery, communication, aerospace, etc. However, the forming performance of magnesium alloys at room temperature is poor, which to a certain extent limits their application. In the prior art, by the process method of "bending width-limited straightening", compressive stress is applied to the initial sheet along the rolling direction, so that the sheet produces transverse shortening and thickening deformation in the thickness direction, so as to preset tensile twins in the sheet, thereby improving the forming performance of the sheet. When carrying out the bending width-limited straightening process method, generally, the magnesium alloy is first width-limited rolled, then bent width-limited straightened, and finally annealed. And in the processing process, bending equipment and flattening and straightening equipment are required.

[0003] The existing flattening machine includes a plurality of upper pressing rollers on the upper side and a plurality of lower pressing rollers on the lower side. The sheet passes between the upper pressing rollers and the lower pressing rollers to achieve flattening and straightening of the sheet. However, such a flattening machine, if used to straighten a magnesium alloy sheet, cannot limit the width of the magnesium alloy sheet, and thus cannot achieve the purpose of width-limited straightening, and cannot achieve the purpose of thickening after straightening. Therefore, there is an urgent need for a width-limited straightening equipment for magnesium alloy sheets. Summary of the Invention

[0004] (1) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a width-limited straightening equipment for magnesium alloy sheets, which can perform width-limited straightening on magnesium alloy sheets.

[0005] (2) Technical Solutions To achieve the above object, an embodiment of the present application provides a width-limited straightening device for magnesium alloy sheets, which includes a frame. A guiding rail, a straightening mechanism, a lower straightening roller group, an upper straightening roller group and a linear driving mechanism are arranged on the frame. The middle part of the frame is hollow to form a working cavity. Two guiding rails are arranged in parallel at intervals, and both ends of the guiding rails are fixed on the vertical side walls of the frame. The straightening mechanism includes a width-limiting die and a straightening die. The width-limiting die is located inside the two guiding rails and is slidably connected to the two guiding rails. The straightening die is located above the width-limiting die and cooperates with the width-limiting die for width-limited straightening. The lower straightening roller group is located at the bottom of the working cavity and supports the width-limiting die from below. Two groups of upper straightening roller groups are arranged at intervals and are respectively located on both sides of the length direction of the guiding rail. The two groups of upper straightening roller groups press the straightening die from both sides. The linear driving mechanism is located above the guiding rail. The linear driving mechanism is connected to the straightening die and drives the straightening die to move along the length direction and the vertical direction of the guiding rail.

[0006] Preferably, the width-limiting die includes a limiting frame, a limiting bottom plate, a guiding block and a guiding hopper. The limiting frame is rectangular. One end of the limiting frame close to the straightening die forms a feed inlet, and the end far from the straightening die forms a discharge outlet. The limiting frame and the limiting bottom plate are detachably connected, and the limiting bottom plate closes the discharge outlet. The guiding blocks are fixedly installed on both sides of the limiting frame close to the guiding rail. A guiding groove is formed on the guiding block. The lower end of the guiding groove penetrates the guiding block, and the guiding rail passes through the guiding groove and is slidably connected to the guiding block. The guiding hopper is in the shape of a quadrangular frustum, and the end with a smaller cross-sectional area of the guiding hopper is fixedly connected to the feed inlet.

[0007] Preferably, positioning strips are fixed on two relatively parallel vertical side walls of the limiting frame. The positioning strips are horizontally arranged, and the length direction of the positioning strips is perpendicular to the length direction of the guiding rail. Two positioning plates are symmetrically fixed on one side of the limiting bottom plate close to the limiting frame. The cross section of the positioning plate is L-shaped. A positioning groove is formed between the side surfaces of the positioning plates close to each other and the limiting bottom plate. When the positioning strip is inserted into the positioning groove, the limiting bottom plate closes the discharge outlet.

[0008] Preferably, the straightening die includes a middle straightening block, a mounting block, a driving column, and side straightening plates; the middle straightening block cooperates with the width-limiting die for straightening, and the mounting block is detachably fixed above the middle straightening block; a buffer cavity is formed at one end of the mounting block close to the middle straightening block, a communication hole is formed at one end of the mounting block far from the middle straightening block, the communication hole communicates with the buffer cavity, and the diameter of the communication hole is smaller than the diameter of the buffer cavity; the driving column includes a limiting column and a connecting column, the limiting column is arranged in the buffer cavity, and the limiting column can slide in the vertical direction, and the diameter of the limiting column is larger than the diameter of the communication hole; one end of the connecting column is fixedly connected with the limiting column, and the other end passes through the communication hole and is connected to the linear driving mechanism; there are two side straightening plates, which are respectively fixed on two side walls of the mounting block relatively close to the upper straightening roller group, and the upper straightening roller group presses the side straightening plates.

[0009] Preferably, the upper straightening roller group includes a first mounting seat, a second mounting seat, a first pressing wheel, a second pressing wheel, and a first lifting assembly; the length directions of the first mounting seat and the second mounting seat are parallel to the length direction of the guide rail; the first mounting seat is horizontally fixed on the vertical side wall of the frame, and a plurality of the first pressing wheels are connected at intervals in the horizontal direction between one side of the first mounting seat close to the guide rail; the second mounting seat is located above the first mounting seat, and the first lifting assembly controls the vertical movement of the second mounting seat; a plurality of the second pressing wheels are connected at intervals in the horizontal direction on one side of the second mounting seat close to the guide rail; the side straightening plate is located between the first pressing wheel and the second pressing wheel.

[0010] Preferably, the first lifting assembly includes a first guide post and a lifting member; the first guide post is fixed on the first mounting seat and is located on one side of the first mounting seat close to the second mounting seat, a first guide hole is formed in the second mounting seat in the vertical direction, the free end of the first guide post is inserted into the first guide hole, the lifting member is fixed on the frame, and the lifting end of the lifting member is connected to the second mounting seat.

[0011] Preferably, the linear driving mechanism includes a second guiding column, a driving block, a second lifting assembly, and a horizontal driving assembly; the second guiding column is parallel to the guiding rail, and two second guiding columns are arranged at intervals, and both ends of the two second guiding columns are fixed on the frame; the driving block is provided with second guiding holes at intervals, and the second guiding column passes through the second guiding holes; the driving block is slidably connected with the second guiding column; the driving block is provided with a through central hole in the vertical direction, the central hole is located in the middle of the two second guiding holes, the connecting column passes through the central hole, the second lifting assembly is installed on the upper side of the driving block, and drives the connecting column to move in the vertical direction; the horizontal driving assembly is connected to the driving block and controls the driving block to move along the length direction of the second guiding column.

[0012] Preferably, the second lifting assembly includes a linkage plate, a lifting column, and a control cylinder; the linkage plate is in a "return" shape, fixed on the connecting column, and located above the driving block; the lifting column is fixed on a side surface of the linkage plate close to the driving block, and a plurality of lifting columns are arranged at equal angles in the circumferential direction of the connecting column; a plurality of positioning holes are formed in the driving block, the positioning holes correspond to the lifting columns one by one, the end of the lifting column far from the linkage plate keeps passing through the positioning hole and is slidably connected with the positioning hole; the control cylinder is fixed on the driving block, and the piston end of the control cylinder is connected to the linkage plate, and two control cylinders are arranged at intervals.

[0013] Preferably, the horizontal driving assembly includes a first driving lead screw, a second driving lead screw, a driving sprocket, a driven sprocket, a chain, and a first driving motor; both ends of the first driving lead screw and the second driving lead screw are rotatably connected to the frame, and both are parallel to the second guiding column; a threaded hole is formed in the driving block, the threaded hole is parallel to the second guiding hole, two threaded holes are arranged at intervals, and the two threaded holes are located on both sides of the central hole; the first driving lead screw and the second driving lead screw both pass through one of the threaded holes and are threadedly connected with the threaded hole; a driving sprocket is fixed at one end of the first driving lead screw, a driven sprocket is fixed at one end of the second driving lead screw, and the driving sprocket and the driven sprocket are located at the same end of the first driving lead screw and the second driving lead screw; a chain is connected between the driving sprocket and the driven sprocket, and the first driving motor drives the first driving lead screw to rotate.

[0014] Preferably, the lower straightening roller group includes a supporting roller and a second driving motor, the supporting roller is horizontally rotatably connected to the bottom of the working cavity, and the length direction of the supporting roller is perpendicular to the length direction of the guiding rail; a plurality of supporting rollers are arranged at equal intervals along the length direction of the guiding rail; the second driving motor drives all the supporting rollers to rotate synchronously.

[0015] (3) Beneficial effects The present invention provides a width-limiting straightening device for magnesium alloy sheets. Through the straightening mechanism, lower straightening roller group, upper straightening roller group, and linear drive mechanism arranged in the working chamber, when performing the bending width-limiting straightening process on the magnesium alloy plate, and after bending the magnesium alloy plate, the device can perform width-limiting straightening on the bent magnesium alloy plate to achieve the purpose of width-limiting straightening and thickening. The linear drive mechanism provided in this application can control the straightening mechanism to move along the length direction of the guide rail. During the movement, the upper straightening roller group and the lower straightening roller group apply force to the straightening mechanism to achieve the purpose of width-limiting straightening. During the width-limiting straightening process of the device, the upper straightening roller group and the lower straightening roller group apply force, and the guide rail and the horizontal drive assembly control the straightening mechanism to move horizontally. The two roller groups applying force and the horizontal drive assembly cooperate with each other, so that during the movement of the straightening mechanism, force is applied to the straightening mechanism by the way of moving and rolling of the roller group, making the force on the magnesium alloy plate more balanced during the limiting straightening process and not affected by the change of the horizontal area of the magnesium alloy plate. At the same time, the time for the straightening mechanism to pass through the upper straightening roller group can be adjusted to achieve the purpose of adjusting the pressure-bearing time of the magnesium alloy plate. Description of the drawings

[0016] Figure 1 is a schematic structural diagram of a width-limiting straightening device for magnesium alloy sheets according to the present invention; Figure 2 is a cross-sectional view highlighting the straightening mechanism of the present invention; Figure 3 is a cross-sectional view highlighting the side pressing straight plate of the present invention; Figure 4 is a schematic diagram highlighting the upper straightening roller group of the present invention; Figure 5 is a cross-sectional view highlighting the second lifting assembly of the present invention; Figure 6 is a cross-sectional view highlighting the connection relationship between the first drive screw rod, the second drive screw rod, and the drive block of the present invention; Figure 7 is a schematic diagram highlighting the horizontal drive assembly of the present invention.

[0017] Reference numerals in the drawings: 100, Frame; 110, Working chamber; 200, Guide rail; 300, Straightening mechanism; 310, Width-limiting die; 311, Limit frame; 3111, Feeding port; 3112, Discharging port; 312, Limit bottom plate; 313, Guide block; 3131, Guide groove; 314, Guide hopper; 315, Positioning strip; 316, Positioning plate; 317, Positioning groove; 320, Pressing and straightening die; 321, Middle pressing and straightening block; 322, Mounting block; 3221, Buffer chamber; 3222, Communication hole; 323, Driving column; 3231, Limit column; 3232, Connecting column; 324, Side pressing and straightening plate; 400, Lower straightening roller group; 410, Support roller; 420, Second driving motor; 500, Upper straightening roller group; 510, First mounting seat; 520, Second mounting seat; 521, First guiding hole; 530, First pressing wheel; 540, Second pressing wheel; 550, First lifting assembly; 551, First guiding column; 552, Lifting member; 600, Linear driving mechanism; 610, Second guiding column; 620, Driving block; 621, Second guiding hole; 622, Central hole; 623, Positioning hole; 624, Threaded hole; 630, Second lifting assembly; 631, Linking plate; 632, Lifting column; 633, Control cylinder; 640, Horizontal driving assembly; 641, First driving lead screw; 642, Second driving lead screw; 643, Driving sprocket; 644, Driven sprocket; 645, Chain; 646, First driving motor. Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment The present invention provides a width-limiting and straightening device for magnesium alloy plates. Refer to Figure 1 , which includes a frame 100, on which a guide rail 200, a straightening mechanism 300, a lower straightening roller group 400, an upper straightening roller group 500, and a linear driving mechanism 600 are provided.

[0020] The middle of the frame 100 is hollow to form a working chamber 110. On one side of the frame 100 in the length direction, a loading operation port is formed at one end, and a discharging operation port is formed at the other end. When it is necessary to straighten the magnesium alloy plate, loading is carried out through the loading operation port, and finally the material is taken through the discharging operation port. In the design, the length of the lower straightening roller group 400 covers the loading operation port and the discharging operation port for the straightening mechanism 300.

[0021] Refer toFigure 2 and Figure 3 , two guide rails 200 are arranged in parallel at intervals. Both ends of the guide rails 200 are fixed on the vertical side walls of the frame 100. The length direction of the guide rails 200 is parallel to the length direction of the frame 100. The guide rails 200 are used to limit the straightening mechanism 300 to keep it moving in a straight line.

[0022] The straightening mechanism 300 includes a width-limiting die 310 and a straightening die 320; the width-limiting die 310 is used to place the magnesium alloy plate to be straightened. The width-limiting die 310 is located inside the two guide rails 200 and is slidably connected to the two guide rails 200. The straightening die 320 is located above the width-limiting die 310 and cooperates with the width-limiting die 310 to perform the width-limiting straightening work.

[0023] The lower straightening roller group 400 is located at the bottom of the working cavity 110 and supports the width-limiting die 310 from below; two groups of upper straightening roller groups 500 are arranged at intervals and are respectively located on both sides of the length direction of the guide rails 200. The two groups of upper straightening roller groups 500 press the straightening die 320 from both sides; during the straightening process, the upper straightening roller group 500 and the lower straightening roller group 400 apply acting forces, and the width-limiting die 310 and the straightening die 320 achieve the purpose of width-limiting straightening during the process of receiving this acting force.

[0024] The linear driving mechanism 600 is located above the guide rails 200. The linear driving mechanism 600 is connected to the straightening die 320 and drives the straightening die 320 to move along the length direction and the vertical direction of the guide rails 200.

[0025] During work, when it is necessary to straighten a bent magnesium alloy plate, the magnesium alloy plate to be straightened is placed inside the width-limiting die 310. The straightening die 320 is controlled by the linear driving mechanism 600 to partially enter the width-limiting die 310, and then the whole straightening mechanism 300 is controlled to move in a straight line. During the movement, it passes through the upper straightening roller group 500 and the lower straightening roller group 400, and the two apply acting forces to the straightening mechanism 300 to complete the width-limiting straightening work.

[0026] Specifically, the width-limiting die 310 includes a limiting frame 311, a limiting bottom plate 312, a guide block 313 and a guide hopper 314.

[0027] Among them, the limiting frame 311 is rectangular. During width-limiting straightening, the magnesium alloy plate to be straightened is located inside the limiting frame 311. One end of the limiting frame 311 close to the straightening die 320 forms a feeding port 3111, and the end far from the straightening die 320 forms a discharging port 3112.

[0028] The limiting frame 311 and the limiting bottom plate 312 are detachably connected, and the limiting bottom plate 312 closes the discharge port 3112; during the width limiting straightening process, the limiting bottom plate 312 keeps the discharge port 3112 closed, and after the width limiting straightening is completed, the limiting bottom plate 312 opens the discharge port 3112, and a force is applied from above to take out the straightened magnesium alloy plate from the discharge port 3112.

[0029] In one embodiment, two relatively parallel vertical side walls of the limit frame 311 are fixed with positioning strips 315, the positioning strips 315 are horizontally arranged, and the length direction of the positioning strips 315 is perpendicular to the length direction of the guide rail 200; two positioning plates 316 are symmetrically fixed to the side of the limit bottom plate 312 close to the limit frame 311, and the cross-section of the positioning plates 316 is L-shaped, and a positioning groove 317 is formed between the side of the positioning plates 316 close to each other and the limit bottom plate 312, and when the positioning strip 315 is inserted into the positioning groove 317, the limit bottom plate 312 closes the discharge port 3112.

[0030] It should be noted that when the positioning strip 315 is inserted into the positioning groove 317, the limiting bottom plate 312 and the limiting frame 311 can fit tightly. Secondly, the length direction of the positioning strip 315 and the positioning plate 316 is perpendicular to the guide rail 200. During the limiting straightening process, the positioning strip 315 and the positioning plate 316 can not only close the discharge port 3112, but also relatively limit the limiting bottom plate 312 and the limiting frame 311 to avoid relative displacement between the two. When the limiting bottom plate 312 and the limiting frame 311 are subjected to external forces, the two can keep moving synchronously.

[0031] The guide block 313 is fixedly installed on both sides of the limit frame 311 near the guide rail 200; the guide block 313 is provided with a guide groove 3131, the lower end of the guide groove 3131 passes through the guide block 313, and the guide rail 200 passes through the guide groove 3131 and is slidably connected with the guide block 313; when the width limiting mold 310 abuts against the lower straightening roller group 400, the guide rail 200 is located in the middle of the guide groove 3131, and the guide rail 200 will neither be separated from the guide groove 3131 nor abut against the upper end surface of the guide groove 3131. The purpose of setting the guide rail 200 is to limit the width limiting mold 310 so that it can only move along a straight line, and then better cooperate with the linear drive mechanism 600 to move. At the same time, by setting the guide groove 3131, the demand for limiting the width limiting mold 310 can be met, and at the same time, during the width limiting straightening process, the guide rail 200 will not be subjected to external force.

[0032] The guide bucket 314 is in the shape of a quadrangular pyramid, and one end of the guide bucket 314 with a smaller cross-sectional area is fixedly connected to the feed port 3111. The guide bucket 314 can be provided to guide the pressing mold 320 when it is docked with the width-limiting mold 310.

[0033] The straightening die 320 includes a middle straightening block 321, a mounting block 322, a driving column 323, and side straightening plates 324.

[0034] The middle straightening block 321 cooperates with the width-limiting die 310 for straightening. Specifically, the horizontal area of the middle straightening block 321 is the same as the horizontal area inside the width-limiting die 310.

[0035] A mounting block 322 is detachably fixed above the middle straightening block 321; specifically, the middle straightening block 321 and the mounting block 322 are fixedly connected by bolts. A buffer cavity 3221 is formed at one end of the mounting block 322 close to the middle straightening block 321, and a communication hole 3222 is formed at the other end of the mounting block 322 away from the middle straightening block 321. The communication hole 3222 communicates with the buffer cavity 3221, and the diameter of the communication hole 3222 is smaller than the diameter of the buffer cavity 3221.

[0036] The driving column 323 includes a limiting column 3231 and a connecting column 3232. The limiting column 3231 is disposed in the buffer cavity 3221 and can slide in the vertical direction. The diameter of the limiting column 3231 should be larger than the diameter of the communication hole 3222.

[0037] In a preferred manner, the vertical side wall of the limiting column 3231 contacts the buffer cavity 3221. Thus, when moving horizontally, the middle straightening block 321 can be quickly controlled to move synchronously, and at the same time, it will not affect the vertical sliding of the limiting column 3231.

[0038] One end of the connecting column 3232 is fixedly connected to the limiting column 3231, and the other end passes through the communication hole 3222 and is connected to the linear driving mechanism 600. The linear driving mechanism 600 is used to control the vertical or horizontal movement of the connecting column 3232.

[0039] When the connecting column 3232 rises a certain distance, it will drive the middle straightening block 321 to disengage from the width-limiting die 310. When the connecting column 3232 descends, it will also control the middle straightening block 321 to enter the width-limiting die 310. However, the height of the buffer cavity 3221 should be such that during the straightening process of the magnesium alloy plate, the limiting column 3231 will not abut against both ends of the buffer cavity 3221.

[0040] There are two side straightening plates 324, which are respectively fixed on two side walls of the mounting block 322 relatively close to the upper straightening roller set 500, and the upper straightening roller set 500 presses against the side straightening plates 324; when the upper straightening roller set 500 applies a force to the side straightening plates 324, since the side straightening plates 324 are connected to the middle straightening block 321 through the mounting block 322, the force will be transmitted to the middle straightening block 321, enabling it to complete the straightening work.

[0041] See Figure 1and Figure 4 The upper straightening roller set 500 includes a first mounting seat 510, a second mounting seat 520, a first pressing wheel 530, a second pressing wheel 540 and a first lifting assembly 550.

[0042] Among them, the length directions of the first mounting seat 510 and the second mounting seat 520 are parallel to the length direction of the guiding rail 200.

[0043] The first mounting seat 510 is horizontally fixed on the vertical side wall of the frame 100, and a plurality of first pressing wheels 530 are connected at intervals along the horizontal direction between the side of the first mounting seat 510 close to the guiding rail 200.

[0044] The second mounting seat 520 is located above the first mounting seat 510, and the first lifting assembly 550 controls the vertical movement of the second mounting seat 520. A plurality of second pressing wheels 540 are connected at intervals along the horizontal direction on the side of the second mounting seat 520 close to the guiding rail 200; the side pressing straightening plate 324 is located between the first pressing wheel 530 and the second pressing wheel 540. During a single straightening process, the distance that the first lifting assembly 550 controls the second mounting seat 520 to move in the vertical direction remains fixed.

[0045] In one embodiment, the first lifting assembly 550 includes a first guiding column 551 and a lifting member 552.

[0046] The first guiding column 551 is fixed on the first mounting seat 510 and is located on the side of the first mounting seat 510 close to the second mounting seat 520. A first guiding hole 521 is opened in the second mounting seat 520 along the vertical direction, and the free end of the first guiding column 551 is inserted into the first guiding hole 521. The first guiding column 551 serves the purpose of guiding, so that the second mounting seat 520 can only move in the vertical direction.

[0047] The lifting member 552 is fixed on the frame 100, and the lifting end of the lifting member 552 is connected to the second mounting seat 520. Among them, the lifting member 552 can be a hydraulic cylinder. During lifting control, the hydraulic cylinder can control the first mounting seat 510 to move a set distance in the vertical direction. When performing width-limiting straightening on magnesium alloy plates of different sizes and different thicknesses, the hydraulic cylinder controls the second mounting seat 520 to move downward to a corresponding distance, so as to achieve width-limiting straightening of magnesium alloy plates of different sizes and different thicknesses.

[0048] See Figure 1 and Figures 5 - 7 The linear driving mechanism 600 includes a second guiding column 610, a driving block 620, a second lifting assembly 630 and a horizontal driving assembly 640.

[0049] The second guide posts 610 are parallel to the guide rails 200 , and two second guide posts 610 are arranged at intervals, with both ends of the two second guide posts 610 being fixed to the frame 100 .

[0050] The driving block 620 is provided with second guide holes 621 at intervals, and the second guide column 610 passes through the second guide holes 621; the driving block 620 and the second guide column 610 are slidably connected. The driving block 620 is provided with a central hole 622 penetrating in the vertical direction, and the central hole 622 is located in the middle of the two second guide holes 621, and the connecting column 3232 passes through the central hole 622. The second lifting assembly 630 is installed on the upper side of the driving block 620, and drives the connecting column 3232 to move in the vertical direction.

[0051] In one embodiment, the second lifting assembly 630 includes a linkage plate 631 , a lifting column 632 and a control cylinder 633 .

[0052] The linkage plate 631 is in a "U" shape, fixed on the connecting column 3232, and located above the driving block 620. The lifting column 632 is fixed to a side of the linkage plate 631 close to the driving block 620, and a plurality of lifting columns 632 are arranged at equal angles in the circumferential direction of the connecting column 3232.

[0053] A plurality of positioning holes 623 are provided on the driving block 620, and the positioning holes 623 correspond to the lifting columns 632 one by one. One end of the lifting columns 632 away from the linkage plate 631 remains through the positioning hole 623 and is slidably connected to the positioning hole 623; that is, when the linkage plate 631 moves in the vertical direction, the lifting columns 632 will not separate from the positioning hole 623, and can control the connection column 3232 to move in the vertical direction, and can drive the connection column 3232 to move in the horizontal direction at the same time.

[0054] The control cylinder 633 is fixed on the driving block 620, and the piston end of the control cylinder 633 is connected to the linkage plate 631, and drives the linkage plate 631 to move a specific distance in the vertical direction. It should be noted that the distance that the control cylinder 633 drives the linkage plate 631 to move should be sufficient for the middle straightening block 321 to enter the limit frame 311, and can be used for the two to complete the straightening work, and at the same time can drive the middle straightening block 321 to completely separate from the width-limiting mold 310, so as to facilitate the placement of the magnesium alloy plate to be straightened. In order to provide the accuracy of the lifting control, two control cylinders 633 are arranged at intervals. The two control cylinders 633 maintain the same stroke when lifting.

[0055] The horizontal driving assembly 640 is connected to the driving block 620 and controls the driving block 620 to move along the length direction of the second guide column 610 .

[0056] In one embodiment, the horizontal drive assembly 640 includes a first drive lead screw 641, a second drive lead screw 642, a driving sprocket 643, a driven sprocket 644, a chain 645, and a first drive motor 646.

[0057] Both ends of the first drive lead screw 641 and the second drive lead screw 642 are rotatably connected to the frame 100, and both are parallel to the second guide post 610.

[0058] Threaded holes 624 are formed in the drive block 620. The threaded holes 624 are parallel to the second guide holes 621. There are two threaded holes 624 arranged at intervals, and the two threaded holes 624 are located on both sides of the central hole 622. Both the first drive lead screw 641 and the second drive lead screw 642 pass through one threaded hole 624 and are threadedly connected to the threaded hole 624.

[0059] A driving sprocket 643 is fixed to one end of the first drive lead screw 641, and a driven sprocket 644 is fixed to one end of the second drive lead screw 642. The driving sprocket 643 and the driven sprocket 644 are located at the same end of the first drive lead screw 641 and the second drive lead screw 642. A chain 645 is connected between the driving sprocket 643 and the driven sprocket 644. The first drive motor 646 drives the first drive lead screw 641 to rotate. When the first drive lead screw 641 rotates, under the action of the chain 645, the second drive lead screw 642 will be driven to rotate synchronously. The first drive lead screw 641 and the second drive lead screw 642 drive the drive block 620 to move synchronously on both sides.

[0060] See Figure 1 , the lower straightening roller set 400 includes support rollers 410 and a second drive motor 420. The support rollers 410 are horizontally rotatably connected to the bottom of the working chamber 110, and the length direction of the support rollers 410 is perpendicular to the length direction of the guide rail 200; a plurality of support rollers 410 are arranged at intervals along the length direction of the guide rail 200; the second drive motor 420 drives all the support rollers 410 to rotate synchronously. Specifically, adjacent support rollers 410 can be connected by a belt or a chain 645. The second drive motor 420 drives one of the support rollers 410 to rotate.

[0061] During the width-limiting straightening process, the lower straightening roller set 400 rotates, and at the same time, the horizontal drive assembly 640 controls the horizontal movement. The two synchronously drive the straightening mechanism 300 to move along a straight line. That is, it ensures that the straightening mechanism 300 can continuously move forward, and at the same time, it can limit the straightening mechanism 300 so that it can only move along a single straight line direction.

[0062] Through the cooperation of the upper straightening roller set 500 and the lower straightening roller set 400 provided, when the straightening mechanism 300 moves horizontally, a force is applied to the straightening mechanism 300 in the way of moving and rolling by the roller sets, so that during the limit straightening process of the straightening mechanism 300, the magnesium alloy plate is more evenly stressed and is not affected by the change of the horizontal area of the magnesium alloy plate.

[0063] When performing width-limiting straightening on magnesium alloy plates with different projection areas, different straightening mechanisms 300 can be replaced. When performing width-limiting straightening on magnesium alloy plates with different thicknesses, since the pressure-holding times of magnesium alloy plates with different thicknesses are different, through the provided horizontal drive assembly 640 and the lower straightening roller set 400, the moving speed of the straightening mechanism 300 is controlled by the two, and then the time for the straightening mechanism 300 to pass through the upper straightening roller set 500 is adjusted, so as to achieve the purpose of adjusting the pressure-bearing time of the magnesium alloy plate.

[0064] The present invention provides a width-limiting straightening device for magnesium alloy plates. Through the straightening mechanism 300, the lower straightening roller set 400, the upper straightening roller set 500 and the linear drive mechanism 600 arranged in the working chamber 110, when performing the bending width-limiting straightening process on the magnesium alloy plate, and after bending the magnesium alloy plate, the device can perform width-limiting straightening on the bent magnesium alloy plate to achieve the purpose of width-limiting straightening and thickening. Through the provided linear drive mechanism 600 in this application, the straightening mechanism 300 can be controlled to move along the length direction of the guide rail 200. During the movement, a force is applied to the straightening mechanism 300 by the upper straightening roller set 500 and the lower straightening roller set 400 to achieve the purpose of width-limiting straightening and thickening. During the width-limiting straightening process of the device, a force is applied by the upper straightening roller set 500 and the lower straightening roller set 400, and the guide rail 200 and the horizontal drive assembly 640 control the straightening mechanism 300 to move horizontally. The two roller sets applying the force and the horizontal drive assembly 640 cooperate with each other to adjust the time for the straightening mechanism 300 to pass through the upper straightening roller set 500, so as to achieve the purpose of adjusting the pressure-bearing time of the magnesium alloy plate.

[0065] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0066] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may 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 invention can be understood according to specific circumstances. Without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0067] The above embodiments only represent the implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A width-limited straightening device for magnesium alloy sheets, characterized in that It includes a frame (100), on which a guide rail (200), a straightening mechanism (300), a lower straightening roller set (400), an upper straightening roller set (500) and a linear drive mechanism (600) are arranged; The middle part of the frame (100) is hollow to form a working cavity (110). Two guide rails (200) are arranged in parallel at intervals, and both ends of the guide rail (200) are fixed on the vertical side walls of the frame (100); The straightening mechanism (300) includes a width-limiting die (310) and a straightening die (320); the width-limiting die (310) is located inside the two guide rails (200) and is slidably connected to the two guide rails (200); the straightening die (320) is located above the width-limiting die (310) and cooperates with the width-limiting die (310) for width-limiting straightening; The lower straightening roller set (400) is located at the bottom of the working cavity (110) and supports the width-limiting die (310) from below; two groups of upper straightening roller sets (500) are arranged at intervals and are respectively located on both sides of the length direction of the guide rail (200), and the two groups of upper straightening roller sets (500) press the straightening die (320) from both sides; The linear drive mechanism (600) is located above the guide rail (200), the linear drive mechanism (600) is connected to the straightening die (320) and drives the straightening die (320) to move along the length direction and the vertical direction of the guide rail (200).

2. The width-limited straightening device for magnesium alloy sheets according to claim 1, characterized in that The width-limiting die (310) includes a limit frame (311), a limit bottom plate (312), a guide block (313) and a guide hopper (314); The limit frame (311) is rectangular. One end of the limit frame (311) close to the straightening die (320) forms a feed port (3111), and the end far from the straightening die (320) forms a discharge port (3112); the limit frame (311) and the limit bottom plate (312) are detachably connected, and the limit bottom plate (312) closes the discharge port (3112); The guide blocks (313) are fixedly installed on both sides of the limit frame (311) close to the guide rail (200); guide grooves (3131) are formed on the guide blocks (313), the lower ends of the guide grooves (3131) penetrate through the guide blocks (313), the guide rail (200) passes through the guide grooves (3131) and is slidably connected to the guide blocks (313); The guide hopper (314) is in the shape of a quadrangular frustum, and the end with a smaller cross-sectional area of the guide hopper (314) is fixedly connected to the feed port (3111).

3. The width-limited straightening device for magnesium alloy sheets according to claim 2, wherein, Positioning strips (315) are fixed on two relatively parallel vertical side walls of the limit frame (311). The positioning strips (315) are arranged horizontally, and the length direction of the positioning strips (315) is perpendicular to the length direction of the guide rail (200); On one side of the limiting bottom plate (312) close to the limiting frame (311), two positioning plates (316) are symmetrically fixed. The cross-section of the positioning plate (316) is L-shaped. A positioning groove (317) is formed between the side surfaces of the positioning plates (316) close to each other and the limiting bottom plate (312). When the positioning strip (315) is inserted into the positioning groove (317), the limiting bottom plate (312) closes the discharge port (3112).

4. A width-limited straightening device for magnesium alloy sheets according to claim 1, characterized in that The straightening die (320) includes a middle straightening block (321), a mounting block (322), a driving column (323), and side straightening plates (324); The middle straightening block (321) cooperates with the width-limiting die (310) for straightening. The mounting block (322) is detachably fixed above the middle straightening block (321); A buffer cavity (3221) is formed at one end of the mounting block (322) close to the middle straightening block (321). A communication hole (3222) is formed at the end of the mounting block (322) away from the middle straightening block (321). The communication hole (3222) communicates with the buffer cavity (3221), and the diameter of the communication hole (3222) is smaller than the diameter of the buffer cavity (3221); The driving column (323) includes a limiting column (3231) and a connecting column (3232). The limiting column (3231) is arranged in the buffer cavity (3221), and the limiting column (3231) can slide in the vertical direction. The diameter of the limiting column (323) is larger than the diameter of the communication hole (3222); One end of the connecting column (3232) is fixedly connected to the limiting column (3231), and the other end passes through the communication hole (3222) and is connected to the linear driving mechanism (600); There are two side straightening plates (324), which are respectively fixed on two side walls of the mounting block (322) relatively close to the upper straightening roller group (500). The upper straightening roller group (500) presses the side straightening plates (324).

5. A magnesium alloy sheet width-limited straightening device according to claim 4, characterized in that, The upper straightening roller group (500) includes a first mounting seat (510), a second mounting seat (520), a first pressing wheel (530), a second pressing wheel (540), and a first lifting assembly (550); The length directions of the first mounting seat (510) and the second mounting seat (520) are parallel to the length direction of the guide rail (200); The first mounting seat (510) is horizontally fixed on the vertical side wall of the frame (100). A plurality of the first pressing wheels (530) are connected at intervals in the horizontal direction between the side of the first mounting seat (510) close to the guide rail (200); The second mounting seat (520) is located above the first mounting seat (510). The first lifting assembly (550) controls the vertical movement of the second mounting seat (520); A plurality of the second pressing wheels (540) are connected at intervals in the horizontal direction on the side of the second mounting seat (520) close to the guide rail (200); The side pressing straight plate (324) is located between the first pressing wheel (530) and the second pressing wheel (540).

6. The width-limited straightening device for magnesium alloy sheets according to claim 5, characterized in that, The first lifting assembly (550) includes a first guiding column (551) and a lifting member (552); The first guiding column (551) is fixed to the first mounting seat (510), and is located on the side of the first mounting seat (510) close to the second mounting seat (520). A first guiding hole (521) is formed in the second mounting seat (520) in the vertical direction. The free end of the first guiding column (551) is inserted into the first guiding hole (521). The lifting member (552) is fixed to the frame (100), and the lifting end of the lifting member (552) is connected to the second mounting seat (520).

7. An apparatus for width-limited straightening of a magnesium alloy sheet according to claim 4, characterized in that, The linear driving mechanism (600) includes a second guiding column (610), a driving block (620), a second lifting assembly (630) and a horizontal driving assembly (640); The second guiding column (610) is parallel to the guiding rail (200), and two second guiding columns (610) are arranged at intervals. Both ends of the two second guiding columns (610) are fixed to the frame (100); The driving block (620) is provided with second guiding holes (621) at intervals. The second guiding column (610) passes through the second guiding holes (621); the driving block (620) is slidably connected to the second guiding column (610); A through central hole (622) is formed in the driving block (620) in the vertical direction. The central hole (622) is located in the middle of the two second guiding holes (621). The connecting column (3232) passes through the central hole (622). The second lifting assembly (630) is installed on the upper side of the driving block (620) and drives the connecting column (3232) to move in the vertical direction; The horizontal driving assembly (640) is connected to the driving block (620) and controls the driving block (620) to move along the length direction of the second guiding column (610).

8. A width-limited straightening device for magnesium alloy sheets according to claim 7, characterized in that, The second lifting assembly (630) includes a linkage plate (631), a lifting column (632) and a control cylinder (633); The linkage plate (631) is in a "return" shape, fixed to the connecting column (3232), and is located above the driving block (620); the lifting column (632) is fixed to the side surface of the linkage plate (631) close to the driving block (620), and a plurality of lifting columns (632) are arranged at equal angles in the circumferential direction of the connecting column (3232); A plurality of positioning holes (623) are formed in the driving block (620). The positioning holes (623) correspond to the lifting columns (632) one by one. The end of the lifting column (632) away from the linkage plate (631) keeps passing through the positioning hole (623) and is slidably connected to the positioning hole (623); The control cylinder (633) is fixed on the driving block (620). The piston end of the control cylinder (633) is connected to the linkage plate (631). There are two control cylinders (633) arranged at intervals.

9. The width-limited straightening device for a magnesium alloy sheet according to claim 7, characterized in that, The horizontal driving assembly (640) includes a first driving lead screw (641), a second driving lead screw (642), a driving sprocket (643), a driven sprocket (644), a chain (645) and a first driving motor (646); Both ends of the first driving lead screw (641) and the second driving lead screw (642) are rotatably connected to the frame (100) and are both parallel to the second guide post (610). A threaded hole (624) is formed in the driving block (620). The threaded hole (624) is parallel to the second guide hole (621). There are two threaded holes (624) arranged at intervals, and the two threaded holes (624) are located on both sides of the central hole (622). The first driving lead screw (641) and the second driving lead screw (642) both pass through one of the threaded holes (624) and are threadedly connected to the threaded hole (624); A driving sprocket (643) is fixed to one end of the first driving lead screw (641), and a driven sprocket (644) is fixed to one end of the second driving lead screw (642). The driving sprocket (643) and the driven sprocket (644) are located at the same end of the first driving lead screw (641) and the second driving lead screw (642); A chain (645) is connected between the driving sprocket (643) and the driven sprocket (644). The first driving motor (646) drives the first driving lead screw (641) to rotate.

10. The width-limited straightening equipment for magnesium alloy sheets according to claim 1, wherein, The lower straightening roll group (400) includes a support roll (410) and a second driving motor (420), The support roll (410) is horizontally and rotatably connected to the bottom of the working chamber (110), and the length direction of the support roll (410) is perpendicular to the length direction of the guide rail (200). A plurality of support rolls (410) are arranged at intervals along the length direction of the guide rail (200). The second driving motor (420) drives all the support rolls (410) to rotate synchronously.

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