Cone forming device and cone forming method for fan-shaped titanium alloy plate

Abstract

The invention discloses a cone forming device and method for a fan-shaped titanium alloy plate, the cone forming device comprises a multi-roller machine, the multi-roller machine is provided with a plurality of forming rollers which are located in the same vertical plane and are of a conical structure, and the forming rollers comprise fixed rollers which are symmetrically and fixedly arranged left and right; the adjusting rollers are located on the top sides of the center lines of the symmetrical fixed rollers and can vertically move, and the outer side of each fixed roller is provided with a shaping reference component connected with a formed plate. The sizing reference component is used for feeding back the state of the plate in the curling process so as to guide downward movement of the adjusting roller, so that it is guaranteed that the plate can be curled and formed at a time, the problems of excessive curling and insufficient curling existing in manual operation at present are solved, the problems that the plate needs to be trimmed subsequently, and waste of the plate is caused are solved, and the production efficiency is improved. And meanwhile, the sealing performance of the arc-shaped cover body after the plates are welded is improved.

Description

Technical Field

[0001] The invention relates to the technical field of conical curling forming of fan-shaped plates, and in particular to a cone forming device and a cone forming method of a fan-shaped titanium alloy plate. Background Art

[0002] Separators are widely used in the chemical industry. Separators mainly include gas-liquid separators and liquid-liquid separators, each of which has different application scenarios and characteristics. The appearance of the separator currently used is shown in the instruction manual. Figure 1 The structure shown is generally a closed cylindrical structure, including a main body of a cylindrical structure and an arc-shaped cover body welded at the upper and lower ends of the main body. Since titanium and titanium alloy metals have excellent corrosion resistance compared to other metals, the separators used in the chemical industry are made of titanium alloy. In the manufacturing process, since the separator is an industrial product, its specifications are usually large (the diameter of the separator is about 3m and the height is about 5m), and the strength of titanium alloy is higher than other metals, its main body is usually made of multiple titanium alloy plates that are curled and welded, and its arc-shaped cover body is also made of multiple fan-shaped plates that are curled and welded.

[0003] In the current production of separators, the curved plate is easy to form due to the regular structure of the cylinder, and can be welded after forming. As for the curved cover, it has a conical structure after overall welding, such as Figure 2 As shown, each fan-shaped plate cut needs to be conically curled. The end side view of a single fan-shaped plate after curling is as shown in Figure 4 As shown in the figure, the curling arcs on the front and back sides of the plate are inconsistent, which makes the operation difficult and cannot ensure the smooth transition of the curling arc surface. Therefore, a multi-roller machine ( Figure 5-6 The multi-roller machine usually has three rollers, the two rollers on the lower side are fixed, and the tapered roller on the upper side can be adjusted up and down. Figure 7 As shown, the flat-cut sector plate is placed on the fixed roller on the lower side, and then the adjusting roller on the upper side moves down and gradually squeezes it onto the plate body. During the gradual extrusion process, the three rollers rotate back and forth accordingly until a tapered plate body is curled and formed. In this way, the tapered curling of multiple plates is completed and then welded into an integral arc-shaped cover body and welded to the main body.

[0004] At present, in the process of curling a single fan-shaped plate, the operator usually supports the plate body and controls the downward displacement and depth of the upper adjusting roller. It takes a long time of operation experience to curl it into a high-quality conical plate. Due to the influence of human factors, coupled with the error of the multi-roller machine and the influence of the quality of different batches of plates (such as the change of parameters during smelting leading to the change of the internal structure of the plate, affecting the strength of the plate), the same operator still has different curling states in the middle of different plates when curling different plates, such as Fig.10 The different plates shown have different vertical heights after curling (that is, the curling arcs are inconsistent, and there are cases of over-curling and under-curling). In order to avoid direct waste of the plates, they can usually be trimmed. For the under-curled plates, the curling can be deepened again ( Fig.11 The operation shown in the figure is that the standard curled plate on the left and the plate with insufficient curling on the right); for the plate with excessive curling, it is usually as follows Fig.12 As shown on the right side of the figure (the left side is a standard curled plate), it is necessary to apply external force in the direction of the arrow to reverse the excessive curling. If the plate is thin and the plate surface is large, it is easy to cause Fig.13 The back side pit shown in the figure; if a large external force is applied, it will also cause Fig.14 The state in which both sides of the plate are bent outwards as shown makes the trimming operation more difficult. Therefore, at present, the taper curling of the fan-shaped plate is still difficult to operate due to the influence of operator experience, the quality of plates in different batches, the structural errors of the multi-roller machine, and the difficulty of trimming required in the later stage. Summary of the invention

[0005] In response to the above-mentioned problems, the present invention aims to provide a cone forming device and a cone forming method for fan-shaped titanium alloy plates, which provide feedback on the state of the plate during the curling process to guide the downward movement of the adjustment roller, thereby ensuring that the plate can be curled and formed in one time, thereby solving the current problems of over-curling and under-curling in manual operations.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a cone forming device for fan-shaped titanium alloy plates, including a multi-roller machine, which has multiple forming rollers with conical structures in the same vertical plane, the forming rollers include fixed rollers that are symmetrically fixed in the left and right directions, and adjusting rollers that are located on the top side of the center line of the symmetrical fixed rollers and can move vertically, and a shaping reference component connected to the formed plate is provided on the outer side of each of the fixed rollers.

[0007] Preferably, the shaping reference member is a support rod symmetrically arranged on the outside of each of the fixed rollers, and a reference plate whose bottom surface is connected to the end of the formed plate is horizontally arranged on the support rod.

[0008] Preferably, the reference plate is vertically adjusted and arranged on the support rod.

[0009] Preferably, an adjustable positioning plate is vertically arranged on each side of the reference plate, and the positioning plate can be adjusted to the upper and lower sides of the reference plate.

[0010] A cone forming method for a fan-shaped titanium alloy plate comprises the following steps: S1. Vertically adjust the height of the reference plate on each side so that both ends of the standard plate are against the bottom surface of the reference plate on each side, and lock the sleeve; S2. Remove the standard plate, and adjust the positioning plates on both sides according to the horizontal width of the plate to be processed, so that the side wall of each positioning plate abuts against the side wall of the plate to be processed, and ensure that the center line of the positioning plates on both sides coincides with the center line of the adjusting roller; S3. Adjust the positioning plate upward until its bottom end is higher than the bottom surface of the reference plate; S4, the adjusting roller is moved downward to contact the surface of the plate to be processed, and at the same time, the adjusting roller and the fixed rollers on both sides reciprocate, and the adjusting roller is gradually moved downward, and the plate to be processed is gradually curled; S5. After the two ends of the plate to be processed are curled and contact the bottom surfaces of the reference plates on both sides, the conical plate is curled and formed.

[0011] The beneficial effects of the present invention are as follows: the present application uses a shaping reference component to provide feedback on the state of the plate during the curling process to guide the downward movement of the adjustment roller, thereby ensuring that the plate can be curled and formed in one time, solving the current problems of excessive curling and insufficient curling in manual operations, as well as the subsequent need for plate trimming procedures and the resulting waste of plates, improving the consistency of curling of multiple plates, and at the same time improving the sealing of the arc cover after the plates are welded.

[0012] Through the adjustment function of the positioning plate, the standard curling plate is used as a reference for plate positioning and curling reference adjustment during operation, further ensuring the quality accuracy of plate curling and the curling consistency of multiple plates, while also improving the operating efficiency during the curling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structure diagram of the separator.

[0014] Figure 2 This is a structural diagram of the arc-shaped cover.

[0015] Figure 3 This is a diagram showing the arc-shaped cover body splicing and welding.

[0016] Figure 4 It is a side view of the end of a single fan-shaped cone plate.

[0017] Figure 5 This is a side view of the multi-roller machine.

[0018] Figure 6 This is the front view of the structure of the adjusting roller and the fixed roller.

[0019] Figure 7 The illustration shows that the fan-shaped plate to be curled is placed on a fixed roller.

[0020] Figure 8 For Figure 7 Illustration of the curling operation of the plate on the basis.

[0021] Fig. 9 This is a diagram of the deformation of the plate during the curling process.

[0022] Fig.10 This is a diagram showing the problems of insufficient curling and excessive curling in current manual curling operations.

[0023] Fig.11 This is a diagram showing the current trimming operation for a plate that is not curled enough.

[0024] Fig.12 A diagram showing the current trimming operation for an excessively curled plate.

[0025] Fig.13 Figure 1 shows the shape of the excessively curled plate after repair.

[0026] Fig.14 Figure 2 shows the shape of the excessively curled plate after repair.

[0027] Fig.15 This is a diagram showing that the plates with inconsistent curling tapers have end face misalignment after splicing (as shown by the dotted circle in the figure).

[0028] Fig.16 A diagrammatic illustration of a reference plate structure is provided for the present invention.

[0029] Fig.17 For the present invention Fig.16 Illustration of the middle plate body contacting the bottom surface of the reference plate during the curling process.

[0030] Fig.18 For the present invention Fig.17 Enlarged view of the structure at point A in the middle (the side of the plate is bent after being squeezed into contact with the bottom surface of the reference plate).

[0031] Fig.19 According to the present invention, the reference plate is hingedly arranged on the sleeve, and a level ruler is also arranged as shown in the figure.

[0032] Fig. 20 This is a diagram showing that the reference plate is turned over after the side edge of the plate contacts the bottom surface of the reference plate according to the present invention.

[0033] Fig.21 The present invention is shown as being offset to the right when placing the sector-shaped flat plate to be rolled.

[0034] Fig. 22 For the present invention Fig.21 The plate body in the figure is in contact with the reference plate when it is not curled.

[0035] Fig.23 The present invention is a diagram showing a positioning plate for positioning a fan-shaped flat plate to be curled.

[0036] Fig.24 For the present invention Fig.23 An enlarged view of the structure at point B in the middle (the left side shows the positioning plate moving downward to position the plate, and the right side shows the positioning plate moving upward to curl the plate).

[0037] Fig.25 This is a diagram showing the present invention providing a strip hole on the reference plate and adjusting the positioning plate to connect with the standard curling plate.

[0038] Fig.26 This is a planar structural diagram of the reference plate of the present invention.

[0039] Fig. 27 This is a real-life illustration of the arc-shaped cover formed by splicing and welding.

[0040] Fig.28 This is a diagram showing the current manual operation of taper curling of a plate based on experience.

[0041] In the figure: 1-separator; 11-main body; 12-arc-shaped cover; 121-fan-shaped cone plate; 122-fan-shaped flat plate to be curled; 123-standard curling plate; 2-multi-roller machine; 21-fixed roller; 22-adjusting roller; 3-support rod; 4-reference plate; 4a-strip hole; 4b-cavity; 5-sleeve; 6-adjusting bolt; 7-level ruler; 8-positioning plate. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0043] Refer to the attached Figures 1 to 15 The cone forming device of a fan-shaped titanium alloy plate shown in the figure comprises a multi-roller machine 2, wherein the multi-roller machine 2 has a plurality of cone-shaped forming rollers in the same vertical plane, wherein the forming rollers include a fixed roller 21 which is fixedly arranged symmetrically on the left and right, and an adjusting roller 22 which is located on the top side of the center line of the symmetrical fixed roller 21 and can move vertically. Figure 7-8 As shown, a flat sector plate is placed on a fixed plate, and a sector plate with a taper can be formed by moving the adjusting roller 22 downward and curling and extruding the plate body.

[0044] In order to solve the problem that the curling tapers of multiple fan-shaped plates are inconsistent due to the influence of operator experience and plate quality, which affects the subsequent alignment welding, the present application provides a shaping reference component connected to the formed plate on the outer side of each fixed roller 21. Figure 8 As shown, during the curling process of the sheet on the multi-roller machine 2, the adjusting roller 22 and the fixed roller 21 realize reciprocating rotation curling, so that during the curling process, the two sides of the sheet reciprocate in an arc shape ( Figure 8 As shown by arrow a in the middle. When the plate is curled to the designed taper, the adjusting roller 22 no longer moves downward, and the plate body continues to rotate back and forth between the adjusting roller 22 and the fixed roller 21, and the side edges of the plate body rotate in an arc to a certain height on both sides, that is, during the reciprocating rotation of the plate body, the maximum height that the left and right sides can reach is Figure 8 The dotted line, that is, when the sheet is curled and formed, it is still under the reciprocating drive of the adjusting roller 22 (the adjusting roller 22 no longer moves down), and the side of the sheet can only and can reach the dotted line. Therefore, the present application sets a shaping reference component connected to the formed sheet on the outer side of each fixed roller 21, that is, the shaping reference component is in Figure 8 At the middle dotted line, during the curling process of the sheet, after gradual bending, the sides face upward, and the adjusting roller 22 moves downward gradually. When the sides of the sheet can contact the shaping reference component under the maximum rotation state to the left and right sides, the sheet is curled into a taper shape, and the adjusting roller 22 can be stopped from moving downward. In this state, after reciprocating rotation for multiple times to eliminate the stress of the sheet body, the sheet can be curled to a standard tapered state.

[0045] With the above-mentioned standard component as a reference, multiple fan-shaped plates can be rolled into multiple plates with the same taper, effectively ensuring that the plates are formed once during the rolling process, solving the problems of insufficient and excessive curling due to manual experience, and the need for later trimming operations; at the same time, the curling consistency of multiple plates is ensured, and welding operations can be performed after curling is completed. The side edges of the plates can be aligned in the welding state, and the sealing of the arc cover 12 can also be ensured. Finally, the difficulty of the current cone plate curling operation is solved, the waste of curling materials is reduced, the operation efficiency is improved and the cost is reduced.

[0046] Specifically, Figure 16-17 As shown, the shaping reference member is a support rod 3 symmetrically arranged outside each of the fixed rollers 21, and a reference plate 4 whose bottom surface is connected to the end of the formed plate is horizontally arranged on the support rod 3. The bottom surface height of the reference plate 4 is flush with the maximum rotation height of the side edge of the plate after curling and forming ( Figure 8The height is shown by the dotted line in the middle), and the side edges of the plate gradually bend upward during the curling process, and when the plate rotates to the left or right side at the maximum stroke and touches the bottom surface of the reference plate 4, the plate is curled into shape. After curling multiple plates in this operation mode, the consistency of the curling of the plate can be effectively guaranteed, and each plate can be curled into shape at one time, which greatly reduces the difficulty of the plate curling operation, improves the working efficiency, and solves the process of later finishing of the plate.

[0047] When the specifications of the arc-shaped cover 12 change, and the number of plates spliced ​​by the arc-shaped cover 12 changes, the curling taper of each plate changes synchronously. Therefore, in order to adapt to this operation, the present application sets the reference plate 4 on the support rod 3 for vertical adjustment. With the curled standard plate (plate curled to the designed taper) as a reference, the position height of the reference plate 4 is adjusted to achieve matching of plates with different curling tapers.

[0048] Specifically, Fig.16 As shown, the end of the reference plate 4 is provided with a sleeve 5 slidably mounted on the support rod 3, and an adjusting bolt 6 is pierced on the outer wall of the sleeve 5 to abut against the side wall of the support rod 3. The height of the reference plate 4 can be quickly adjusted by vertically sliding the sleeve 5 on the support rod 3, and then the reference plate 4 is fixed by tightening the adjusting bolt 6 and pressing it against the support rod 3.

[0049] However, in actual operation, the operator cannot accurately determine the contact state between the side edge of the plate and the bottom surface of the reference plate 4, which may lead to excessive curling. When the curling is excessive, due to the fixed state of the reference plate 4, the side edge of the (thinner) plate will bend after contacting the bottom surface of the reference plate 4 ( Fig.18 The status shown in the figure) cannot provide real-time feedback to the operator. Therefore, to solve this problem, Figure 19-20 As shown, the present application hinges the reference plate 4 on the sleeve 5 so that it can rotate upward (a torsion spring is preferably provided at the hinge, which is not shown in the figure), and places a level ruler 7 on the reference plate 4. When the plate is not in contact, the reference plate 4 is in a horizontal state; when the side of the plate contacts the reference plate 4, the reference plate 4 will flip upward, and the level ruler 7 placed on it will change its tilt, providing real-time feedback to the operator, and then guiding the operator to stop the adjustment roller 22 from moving downward, thereby effectively solving the problem of excessive curling.

[0050] Further preferably, a pressure sensor (not shown in the figure) is provided at the hinge of the reference plate 4 and the sleeve 5. When the reference plate 4 is pressed by the side of the plate body and flipped upward, the operator can be guided to stop the downward movement of the adjustment roller 22 through the feedback of the pressure sensor. Through the hinge setting of the reference plate 4, as well as the feedback of the level 7 and the pressure sensor, the curling state of the plate body can be effectively controlled to avoid the problem of excessive curling.

[0051] like Fig.21 As shown, before starting the rolling operation, the operator will place the planar sector plate body flat on the fixed rollers 21 on both sides. During the placement process, it is very easy for the plate to deviate left and right (the center line of the plate is misaligned with the center line of the adjusting roller 22, Fig.21 as shown by the dashed line in the figure. Fig.21 The middle plate is placed to the left, and during the curling process, the left side of the plate is too wide, so that the left side edge contacts the bottom surface of the left reference plate 4 in advance before the plate is curled ( Fig. 22 The right side edge needs to be excessively curled before it can contact the bottom surface of the reference plate 4, thus forming an erroneous reference for the curling of the plate. Therefore, in order to solve this problem, Figure 23-24 As shown, an adjustable positioning plate 8 is vertically arranged on each side of the reference plate 4, and the positioning plate 8 can be adjusted to the upper and lower sides of the reference plate 4. When placing the flat plate on the fixed roller 21, the positioning plates 8 on both sides are adjusted to extend downward to the bottom of the reference plate 4. When placing the plate, the positioning plates 8 on both sides are used as contact references. After the plate is placed, it can be ensured that the center line of the plate is in a position that coincides with the center line of the adjustment roller 22. During the curling operation, the positioning plate 8 is moved up to avoid interference caused by contact with the side during the curling process of the plate. Thereby, the curling of both sides of the plate is carried out synchronously, and at the same time, it can contact the reference plates 4 on both sides in the same curling state to solve the influence of the deviation of the plate placement on the curling.

[0052] In order to facilitate the up and down adjustment of the positioning plate 8, Fig.24 As shown, preferably, the positioning plate 8 is vertically inserted into the reference plate 4, and a plurality of threaded holes are vertically opened on the positioning plate 8, which is connected and fixed to the reference plate 4 by bolts (not shown in the figure), and the vertical adjustment operation of the positioning plate 8 compared with the reference plate 4 can be realized through different threaded holes. The positioning plate 8 can be moved down when positioning the plate body, and can be moved up when curling.

[0053] Before the plate body is curled for the first time, it is necessary to place a standard curling plate 123 to adjust the height of the reference plate 4. When the standard curling plate 123 is placed on the fixed roller 21, there is also a problem of left and right deviation, and the height adjustment of the reference plate 4 is inaccurate. At the same time, the horizontal width of the standard curling plate 123 after curling is smaller than the width of the flat plate, so the positioning plate 8 cannot contact the side of the standard curling plate 123, and the placement of the standard curling plate 123 cannot be positioned. Therefore, in order to solve this problem, Fig.25 As shown, a strip hole 4a is horizontally opened on the reference plate 4 to drive the reference plate 4 to adjust left and right. In order to facilitate the horizontal movement of the positioning plate 8 in the reference plate 4, as shown in FIG. Fig.26As shown, a cavity 4b is provided in the reference plate 4, and the positioning plate 8 is driven to move horizontally in the cavity 4b, so that the side wall of the positioning plate 8 contacts the side of the standard curling plate 123, and the positioning plate 8 is fixed to the strip hole 4a by bolts, and the positioning of the positioning plates 8 on both sides is used to realize the positioning and placement of the standard curling plate 123, and then the reference plate 4 is moved down by the sleeve 5, so that the bottom surface of the reference plate 4 on both sides contacts the side of the standard curling plate 123, and the height position of the reference plate 4 can be adjusted. Then, before placing the plate body on the fixed roller 21, the position of the positioning plates 8 on both sides is adjusted horizontally, so that the spacing between the symmetrical positioning plates 8 is the same as that of the plate body, and after the plate body is placed on the fixed roller 21 with the positioning plate 8 as the reference, the positioning plate 8 is moved up, and the adjusting roller 22 can be moved down to perform the curling operation on the plate body.

[0054] According to the above-mentioned cone forming device, the present application also provides a cone forming method for a fan-shaped titanium alloy plate, comprising the following steps: S1. Horizontally adjust the positioning plates 8 on both sides through the strip holes 4a to be symmetrical with the center line of the adjusting roller 22, and the spacing between the positioning plates 8 on both sides is equal to the width of the standard curling plate 123 of the formed plate; S2, placing the standard curled plate 123 of the formed plate on the fixed roller 21 and making the two ends of the standard curled plate 123 butt against the side walls of the positioning plate 8 on each side; S3, vertically adjust the height of the reference plate 4 on each side so that both ends of the standard curling plate 123 are against the bottom surface of the reference plate 4 on each side, and lock the sleeve 5; S4, remove the standard curling plate 123, and adjust the positioning plates 8 on both sides according to the horizontal width of the plate to be processed, so that the side walls of the positioning plates 8 on each side are against the side walls of the plate to be processed, and at the same time ensure that the center lines of the positioning plates 8 on both sides coincide with the center lines of the adjusting rollers 22, and then place the plate body to be processed on the fixed rollers 21 with the side walls of the positioning plates 8 on both sides as the reference; S5, adjust the positioning plate 8 upward until its bottom end is higher than the bottom surface of the reference plate 4; S6, the adjusting roller 22 is moved downward to contact the surface of the plate to be processed, and at the same time, the adjusting roller 22 and the fixed rollers 21 on both sides reciprocate, and the adjusting roller 22 is gradually moved downward, and the plate to be processed is gradually curled; S7. After the two ends of the plate to be processed are curled and contact the bottom surfaces of the reference plates 4 on both sides, the reference plates 4 are driven to flip over, and feedback is provided by the level ruler 7 on the reference plate 4 or the pressure sensor arranged at the hinge to stop the downward movement of the adjusting roller 22. Then, the curled plate body is driven to reciprocate for several times by the adjusting roller 22 and the fixed roller 21, and the curling stress is eliminated, and then the plate is disassembled, that is, the conical plate is curled and formed.

[0055] The principle of the present invention is: the present application uses a shaping reference component to provide feedback on the state of the plate during the curling process to guide the downward movement of the adjustment roller 22, thereby ensuring that the plate can be curled into shape in one time, solving the current problems of excessive curling and insufficient curling in manual operation, as well as the subsequent need for plate trimming procedures and the waste of plate, improving the consistency of curling of multiple plates, and at the same time improving the sealing of the arc cover 12 after the plate is welded.

[0056] The above shows and describes the basic principle, main features and advantages of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention claimed.

Claims

1. A cone forming device for a fan-shaped titanium alloy plate, comprising a multi-roller machine, the multi-roller machine having a plurality of cone-shaped forming rollers in the same vertical plane, the forming rollers comprising a fixed roller fixedly arranged symmetrically on the left and right, and an adjusting roller located on the top side of the center line of the symmetrical fixed roller and capable of vertical movement, characterized in that: A shaping reference component connected to the formed plate is arranged on the outer side of each of the fixed rollers.

2. The cone forming device according to claim 1, characterized in that: The shaping reference member is a support rod symmetrically arranged outside each of the fixed rollers, and a reference plate whose bottom surface is connected to the end of the formed plate is horizontally arranged on the support rod.

3. The cone forming device according to claim 2, characterized in that: The reference plate is vertically adjusted and arranged on the support rod.

4. The cone forming device according to claim 3, characterized in that: An adjustable positioning plate is vertically arranged on each side of the reference plate, and the positioning plate can be adjusted to the upper and lower sides of the reference plate.

5. A cone forming method for a sector-shaped titanium alloy plate, characterized in that: The following steps are involved: S1. Vertically adjust the height of the reference plate on each side so that both ends of the standard plate are against the bottom surface of the reference plate on each side, and lock the sleeve; S2. Remove the standard plate, and adjust the positioning plates on both sides according to the horizontal width of the plate to be processed, so that the side wall of each positioning plate abuts against the side wall of the plate to be processed, and ensure that the center line of the positioning plates on both sides coincides with the center line of the adjusting roller; S3. Adjust the positioning plate upward until its bottom end is higher than the bottom surface of the reference plate; S4, the adjusting roller is moved downward to contact the surface of the plate to be processed, and at the same time, the adjusting roller and the fixed rollers on both sides reciprocate, and the adjusting roller is gradually moved downward, and the plate to be processed is gradually curled; S5. After the two ends of the plate to be processed are curled and contact the bottom surfaces of the reference plates on both sides, the conical plate is curled and formed.

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