A pressure vessel cylinder plate rolling machine and its working method

Abstract

The present invention discloses a pressure vessel cylinder plate rolling machine and a working method thereof, and relates to the technical field of plate rolling machines. The pressure vessel cylinder plate rolling machine comprises: a rolling roller, which comprises an upper roller and lower rollers located on both sides below the upper roller. A plate is rolled by the upper roller and the lower roller and gradually forms a cylinder; an arc frame, which is located above the rolling roller, and the center of the arc frame and the center of the upper roller are located on the same vertical line. The arc frame is provided with a following mechanism, which can deflect along the arc of the arc frame and follow the cylinder, and a platform is radially installed on the following mechanism, and a limiting arm is provided on one side of the platform; a preliminary approach mechanism, which is provided on the platform. The pressure vessel cylinder plate rolling machine and the working method thereof can clamp the plate through the limiting arm and the radially movable plate and follow the plate to roll together, thereby maintaining the curvature of the plate and ensuring the roundness of the plate after rolling.

Description

Technical Field

[0001] The present invention relates to the technical field of plate rolling machines, in particular to a pressure vessel cylinder plate rolling machine and a working method thereof. Background Art

[0002] A plate rolling machine is an industrial processing device that uses work rollers to apply external force to metal sheets, causing them to plastically deform and bend into a specific shape (such as a cylinder, cone, or arc). Its core operating principle is to achieve continuous bending of the sheet through the rotation and position adjustment of the rollers.

[0003] Since the plate itself shakes during the rolling process, the curvature of the plate cannot reach the required curvature. The solution to this problem is generally to set a bracket above the plate rolling machine. For example, the patent with application number CN202411342016.0 proposes a method for using a three-roller and four-roller plate rolling machine for rolling a cone, which is to set a bracket above the plate rolling machine. However, in fact, the plate rolling deviation is very likely to occur in the second half of the plate rolling of the plate rolling machine, and the bracket cannot completely solve the problem. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a pressure vessel cylinder plate rolling machine and a working method thereof, which solves the problem that plate rolling deviation is very likely to occur in the latter half of the plate rolling process of the plate rolling machine.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A pressure vessel barrel plate rolling machine, comprising:

[0006] Rolling rollers, which include an upper roller and lower rollers located on both sides below the upper roller. The plate is rolled by the upper and lower rollers and gradually forms a cylinder;

[0007] An arc frame is located above the winding roller and is concentric with the cylinder of the pressure vessel to be formed. The center of the arc frame and the center of the upper roller are located on the same vertical line. The arc frame is provided with a following mechanism that can deflect along the arc of the arc frame and follow the cylinder. A platform is radially mounted on the following mechanism, and a limiting arm is provided on one side of the platform. The radial position of the platform in the arc frame can be adjusted to match the cylinder of the pressure vessel to be formed.

[0008] A preliminary approach mechanism is provided on the carrier platform and is used to make the first and second limit arm carrier blocks of the limit arm approach the cylinder at one time when the plate gradually forms the cylinder;

[0009] The radial movable plate is located in the limiting arm, and a fine-tuning mechanism is provided in the carrier. The clamping fine-tuning mechanism is used to control the radial movable plate to clamp the cylinder for the second time to adapt to plates of different thicknesses.

[0010] Furthermore, the limiting arm has an assembly cavity, and the assembly cavity is provided with:

[0011] An axially movable plate, one end of each axially movable plate extending into the corresponding limiting arm carrier block 1 and limiting arm carrier block 2, and one surface of the axially movable plate having an inclined surface;

[0012] The radial movable plate is clamped by the axial movable plate, and the side where the radial movable plate and the inclined surface of the axial movable plate are clamped is also an inclined surface. The fine-tuning mechanism is used to apply axial tension to the axial movable plate, so that the radial movable plate can move radially along the limiting arm, forming a state in which the radial movable plate in the two limiting arms clamps the cylinder.

[0013] Furthermore, a second tension spring is fixedly provided between the end of the axially movable plate away from the carrier and the limiting arm, and the second tension spring can apply a pulling force to the end of the limiting arm away from the carrier.

[0014] Furthermore, the fine-tuning mechanism includes:

[0015] The wheel axle is provided with two groups, which are distributed in the limiting arm load block 1 and the limiting arm load block 2. A reel is installed on the wheel axle, and a mounting pin is provided at one end of the axial movable plate close to the reel. A steel rope is rotatably provided between the mounting pin and the reel. When the wheel axle rotates, a pulling force can be applied to the axial movable plate through the steel rope;

[0016] A fine-tuning gear, the intermediate shaft of which is a rotating shaft, and the fine-tuning gear can move in the direction of the line connecting the limiting arm carrier block 1 and the limiting arm carrier block 2;

[0017] The transmission structure is used to convert the rotation of the rotating shaft into the rotation of the wheel axle, so that the fine-tuning gear can drive the wheel axle to rotate.

[0018] Furthermore, it also includes a wedge block 1, which is located in the carrier platform and can move axially along the arc frame. The limit arm carrier block 1 has a slope and a plane. The wedge block 1 has a slope and a plane. When the wedge block 1 is clamped with the slope of the limit arm carrier block 1, it can push the limit arm carrier block 1 to move radially along the arc frame. When the wedge block 1 is clamped with the plane of the limit arm carrier block 1, it no longer pushes the limit arm carrier block 1.

[0019] Furthermore, the ends of the corresponding rotating shafts pass through the corresponding limiting arm carrier blocks 1 and 2, and auxiliary wedge blocks 2 are provided near the two ends of the rotating shaft through bearings. Auxiliary wedge blocks 1 are provided on both sides of the wedge block 1. When the plane of the wedge block 1 clamps the plane of the limiting arm carrier block 1, the auxiliary wedge block 1 can push the auxiliary wedge block 2, so that the fine-tuning gear gradually approaches the midpoint of the line connecting the limiting arm carrier block 1 and the limiting arm carrier block 2;

[0020] The rack plate is located on the side of the fine-tuning gear close to the wedge block 1, and a tension spring 1 is installed at one end of the rack plate away from the midpoint of the line connecting the limit arm carrier block 1 and the limit arm carrier block 2, and the other end of the tension spring 1 is fixed on the inner wall of the carrier.

[0021] Furthermore, the transmission structure includes:

[0022] A first worm gear, wherein the first worm gear is coaxial with the rotation axis;

[0023] The worm gear 1 is meshed with one side of the worm gear 1, and a frame body is extended from the auxiliary wedge block 2. The lower end of the worm gear 1 is rotatably mounted on the frame body through a bearing. A hexagonal shaft is provided in the middle of the worm gear 1, and the hexagonal shaft is rotatably mounted in the carrier through a bearing. The worm gear 1 can move axially along the hexagonal shaft.

[0024] A second worm is coaxial with the hexagonal shaft, and a second worm wheel capable of meshing with the second worm is fixed on the axle.

[0025] Furthermore, it also includes a guide frame, which is fixed on the side of wedge block one, and a load-bearing slider is symmetrically slidably provided on the guide frame. A spring telescopic rod is installed on the load-bearing slider, and one end of the spring telescopic rod is fixed on the rack plate.

[0026] Furthermore, the preliminary approach mechanism further comprises a guide seat 1 fixedly mounted on the wedge-shaped block 1, the carrier is provided with a guide rail 1 for horizontally guiding the guide seat 1, and a force-bearing rod is fixedly mounted on a side of the guide seat 1 close to the arc frame;

[0027] The arc frame is provided with an arc groove along its circumference, one end of the arc groove is provided with a first oblique groove, and the other end of the arc groove is provided with a second oblique groove, and the force-bearing rod can slide in the first oblique groove, the arc groove and the second oblique groove;

[0028] The preliminary approach mechanism also includes a swing arm, which is arranged crosswise to form a cross-rod structure. The center of the crossed swing arm is installed on the inner wall of the carrier through the central axis rotation. A long hole is provided on the swing arm. The limiting arm carrier block 1 and the limiting arm carrier block 2 are both fixed with a protrusion adapted to the long hole. The inner wall of the carrier is provided with a vertically arranged guide groove adapted to the protrusion, which is used to limit the moving direction of the limiting arm carrier block 1 and the limiting arm carrier block 2 to the vertical direction.

[0029] The present invention also provides a working method applicable to the above-mentioned pressure vessel barrel plate rolling machine, comprising the following steps:

[0030] Step 1: Adjust the height of the arc frame and the radial position of the platform in the arc frame according to the diameter of the cylinder to be curled;

[0031] Step 2: The sheet is rolled up by the roller. When the sheet is rolled up to a semi-finished sheet and reaches the area where the limit arm is located, the following mechanism is controlled to move. The limit arm is moved close to the semi-finished sheet through the action of the preliminary approach mechanism and the fine-tuning mechanism, and the radially movable plate clamps the semi-finished sheet. The radially movable plate clamping the semi-finished sheet moves synchronously with the semi-finished sheet.

[0032] Step 3: When the semi-finished plate forms 3 / 4 of the cylinder, the following mechanism stops and the radial moving plate performs the release action.

[0033] The present invention has the following beneficial effects:

[0034] The pressure vessel cylinder plate rolling machine of the present invention can clamp the plate through the limiting arm and the radial movable plate and curl along with the plate, thereby maintaining the curvature of the plate and ensuring the roundness of the plate after curling.

[0035] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is an overall diagram of the present invention;

[0037] Figure 2 Schematic diagram of the arc frame of the present invention;

[0038] Figure 3 An exploded view of the arc frame and the following mechanism of the present invention;

[0039] Figure 4 Schematic diagram of the limiting arm and the carrier of the present invention;

[0040] Figure 5 Schematic diagram of the internal structure of the carrier of the present invention;

[0041] Figure 6 For the present invention Figure 5 A magnified view of area A;

[0042] Figure 7 is a cross-sectional view of the carrier of the present invention;

[0043] Figure 8 Schematic diagram of wedge block 1 of the present invention;

[0044] Figure 9 Schematic diagram of the first and second limit arm carrier blocks of the present invention;

[0045] Figure 10 It is a cross-sectional view of the limiting arm of the present invention;

[0046] Figure 11 This is an exploded view of the limiting arm of the present invention;

[0047] Figure 12 Schematic diagram of the second internal transmission structure of the limit arm carrier block of the present invention;

[0048] Figure 13 This is a diagram showing the initial states of the first and second limit arm carrier blocks of the present invention;

[0049] Figure 14 This is a diagram showing a state in which the limiting arm carrying block 1 and the limiting arm carrying block 2 of the present invention are close to each other;

[0050] Figure 15 This is a diagram of the meshing state of the fine-tuning gear and rack plate of the present invention.

[0051] In the figure, 1, machine head 1; 2, machine head 2; 3, limit arm; 31, radial movable plate; 32, axial movable plate; 321, mounting pin; 33, tension spring 2; 4, arc frame; 41, first inclined groove; 42, arc groove; 43, second inclined groove; 5, following mechanism; 51, following motor; 52, moving frame; 53, rack; 54, bevel gear; 6, carrier; 61, guide rail 1; 7, preliminary approach mechanism; 71, force rod; 72, guide seat 1; 73, wedge block 1; 74, limit arm carrier block 1; 75, convex portion; 76, swing arm; 77, central axis; 78, limit arm Carrier block 2; 79. Auxiliary wedge block 1; 8. Fine-tuning mechanism; 81. Fine-tuning gear; 82. Rack plate; 83. Tension spring 1; 84. Spring telescopic rod; 85. Guide frame; 86. Carrier slider; 87. Rotating shaft; 871. Reel; 872. Steel rope; 873. Auxiliary wedge block 2; 8731. Spring 2; 874. Hexagonal shaft; 875. Worm 1; 876. Worm wheel 1; 877. Worm 2; 878. Worm wheel 2; 879. Wheel axle; 9. Limit block; 10. Positioning cylinder; 11. Lifting platform; 12. Lower roller; 13. Upper roller; 14. Return spring. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0053] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] The following is based on Figures 1-15 The present invention describes a pressure vessel barrel plate rolling machine and a working method thereof provided in an embodiment of the present invention.

[0055] On the one hand, an embodiment of the present invention provides a pressure vessel barrel rolling machine.

[0056] Please refer to Figure 1 As shown, the pressure vessel cylinder plate rolling machine includes rolling rollers, which include an upper roller 13 and lower rollers 12 located on either side of the upper roller 13. Both rollers are assembled between the side-by-side die heads 1 and 2. The plate is first inserted between the upper roller 13 and the lower roller 12. The lower roller 12 serves as the driving roller. The two lower rollers 12 are driven by a motor and connected by a transmission belt to push the plate. The upper roller 13 itself is height-adjustable. Driven by a hydraulic cylinder or a mechanical screw mechanism, the upper roller 13 can move vertically up and down to adjust the gap between it and the lower roller 12 (determining the initial bending position and degree) and apply downward pressure (determining the magnitude of the bending force). The plate is rolled by the upper and lower rollers 13 and 12, gradually forming a cylinder.

[0057] During operation, the first step is to feed the plate horizontally onto the two lower rollers 12, and operate the upper roller 13 to move vertically downward and press it on the upper surface of the plate. The downward pressure of the upper roller 13 determines the position of the initial bending point of the plate (usually 1 / 3 to 1 / 2 of the length of the plate) and the initial pressure applied. The second step is the first bending, driving the lower roller 12 to rotate, and the two lower rollers 12 rotate synchronously in the same direction. Under the combined action of the downward pressure of the upper roller 13 and the upward support force of the lower roller 12, the plate undergoes local plastic bending deformation in the area near the contact point, forming a small upward arc; the third step is forward movement and bending expansion. As the lower roller 12 continues to rotate, the plate continues to move forward. The curved area already formed on the plate will move forward and expand as the plate moves forward. Due to the continuous downward pressure of the upper roller 13, the plate is always subjected to the bending moment when passing through the area directly below the upper roller 13, and the bending deformation occurs and accumulates progressively over the entire length of the plate.

[0058] The present invention aims to solve the problem of unstable bending caused by the continued forward movement of the plate in the third step.

[0059] like Figure 1 As shown, the present invention is provided with an arc frame 4, which is located above the winding roller, and the center of the arc frame 4 is located on the same vertical line as the center of the upper roller 13. A lifting platform 11 is provided at both ends of the arc frame 4 for driving the arc frame 4 to rise or fall, so that the center of the arc frame 4 coincides with the center of the curled cylinder. The specific center height of the arc frame 4 can be controlled by CNC. For example, the radius of the curled plate is a, and the center height of the plate is a. The CNC controls the lifting platform 11 to raise the center height of the arc frame 4 to the height a.

[0060] The reason for setting the above-mentioned arc frame 4 is to set up the limit arm 3. The limit arm 3 can clamp the plate and can rotate along the circumference of the arc frame 4, so that the limit arm 3 rotates together with the curled plate in a following state, that is, the limit arm 3 starts to limit the curling of the cylinder from the moment it clamps the cylinder, thereby ensuring that the curling degree of the plate meets the required curvature and also ensuring the stability of the plate when curling.

[0061] like Figure 1 and Figure 2 As shown, in order to achieve the above purpose, a following mechanism 5 is provided on the arc frame 4. The following mechanism 5 can deflect along the arc of the arc frame 4 and follow the curling plate. A carrier 6 is radially installed on the following mechanism 5, and the limiting arm 3 is installed on the carrier 6.

[0062] Combine Figure 1-Figure 3 As shown, the following mechanism 5 mentioned here includes a moving frame 52 and a following motor 51. The moving frame 52 is limited on the arc frame 4 by a limiting track and can deflect circumferentially, but cannot move axially or radially. The following motor 51 is installed on the moving frame 52. A bevel gear 54 is fixed to the power output end of the following motor 51, and a rack portion 53 meshing with the bevel gear 54 is provided on one side of the arc frame 4.

[0063] In this embodiment, when the follower motor 51 is working, the entire moving frame 52 can be moved in the circumferential direction of the arc frame 4 through the engagement of the bevel gear 54 and the rack portion 53 .

[0064] In addition, the following speed of the moving frame 52 needs to be the same as the curling speed of the sheet. Specifically, the following speed of the moving frame 52 is the curling angular velocity of the sheet, which is calculated as follows: ,in is the angular velocity of the sheet curling, is the rotation speed of the lower roller 12, r is the radius of the lower roller 12, and R is the radius of the cylinder of the pressure vessel after the plate is curled.

[0065] In addition, it should be noted that when curling plates of different diameters, the radial position of the limiting arm 3 on the arc frame 4 should be different. Therefore, a positioning cylinder 10 is also provided on the movable frame 52. The positioning cylinder 10 is used to adjust the radial position of the carrier 6 on the arc frame 4 to adapt to the height of the plate after curling.

[0066] Furthermore, the height that needs to be adjusted for the platform 6 can be calculated based on the radius of the curled plate. For example, if the radius of the curled plate is a, the height of the center of the curled plate is a, the height of the highest point of the curled plate is 2a, the height of the center of the arc frame 4 is a, the radius of the arc frame 4 is b, and the height of the highest point of the arc frame 4 is b+a. Then, the height of the midpoint of the line connecting the two limit arms 3 should be 2a, and the elongation of the positioning cylinder 10 should be ba.

[0067] Combine Figure 4-13 As shown, the sheet will be unstable when it is curled. In order to ensure that the curled sheet can enter between the two side-by-side limit arms 3 during the curling process, it is necessary to set a certain fault tolerance space between the two limit arms 3, that is, there is a certain distance between the two limit arms 3 to ensure that the curled sheet can enter between the two limit arms 3. Therefore, in order to achieve the state where the limit arms 3 approach each other and clamp the sheet, a preliminary approach mechanism 7, a fine-tuning mechanism 8 and a radially movable plate 31 are set here. The preliminary approach mechanism 7 is set on the carrier 6, and is used to make the limit arms 3 approach each other in the process of the sheet gradually forming a cylinder, and have a tendency to clamp the cylinder. The radially movable plate 31 is located in the limit arm 3, and a fine-tuning mechanism 8 is provided in the carrier 6. The fine-tuning mechanism 8 is used to control the radially movable plate 31 to approach and clamp the cylinder for the second time to adapt to sheets of different thicknesses.

[0068] Therefore, the pressure vessel cylinder plate rolling machine provided in the embodiment of the present invention can approach the plate through the limiting arm 3 and follow the plate to roll together, thereby maintaining the curvature of the rolled plate and ensuring the roundness of the rolled plate.

[0069] Combine Figure 4 、 Figure 7-Figure 9 As shown, the above-mentioned preliminary approach mechanism 7 includes a limit arm carrier block 1 74 and a limit arm carrier block 2 78 arranged side by side, which are respectively used to carry two groups of limit arms 3; when the limit arm carrier block 1 74 and the limit arm carrier block 2 78 approach each other, they can drive the two groups of limit arms 3 to approach each other.

[0070] A wedge block 73 is provided on the side of the limiting arm support block 74 close to the arc frame 4 ( Figure 5 and Figure 7 From the perspective, the wedge block 73 is located above), and the wedge block 73 is located inside the carrier 6. The wedge block 73 has a slope and a plane. A guide seat 72 is provided on the side of the wedge block 73 close to the arc frame 4. A guide rail 61 is provided on the carrier 6 for axially guiding the guide seat 72 on the arc frame 4. The limit arm carrier block 74 has a slope and a plane. In the initial state, the wedge block 73 contacts the slope of the limit arm carrier block 74. When the wedge block 73 moves, it can push the limit arm carrier block 74 to move radially along the arc frame 4 ( Figure 5 and Figure 7 From the perspective, wedge block 73 moves to the left, and limit arm carrier block 74 moves downward) until the inclined surfaces of wedge block 73 and limit arm carrier block 74 separate from each other, and the planes of wedge block 73 and limit arm carrier block 74 begin to contact. When the planes contact, wedge block 73 no longer pushes limit arm carrier block 74, that is, wedge block 73 has two states in the process of horizontal movement: pushing limit arm carrier block 74 and not pushing limit arm carrier block 74.

[0071] In order to realize the synchronous control of the limiting arm carrying block 1 74 when the limiting arm carrying block 2 78 moves relatively close to or relatively away from the limiting arm carrying block 1 74, a swing arm 76 is also provided. Figure 5 、 Figure 7 、 Figure 8 and Figure 9 As shown, two swing arms 76 are arranged crosswise to form a cross rod structure. The center of the crossed swing arms 76 is rotatably mounted on the inner wall of the carrier 6 through the central axis 77. A long hole is provided on the swing arm 76. The limiting arm carrier block 1 74 and the limiting arm carrier block 2 78 are both fixed with a protrusion 75 adapted to the long hole. The inner wall of the carrier 6 is provided with a vertically arranged guide groove adapted to the protrusion 75, which is used to limit the moving direction of the limiting arm carrier block 1 74 and the limiting arm carrier block 2 78 to the vertical direction.

[0072] In this embodiment, Figure 5 and Figure 7 From the perspective of , when the limit arm carrier block 1 74 drives the limit arm 3 on it to move downward, it will push the upper end of the swing arm 76 downward, so that the lower end of the swing arm 76 moves upward, thereby driving the lower limit arm carrier block 2 78 to move upward, causing the lower limit arm 3 to move upward, and the two limit arms 3 can be moved closer to each other.

[0073] Preferably, a reset spring 14 is provided between the limiting arm carrier block 1 74 and the limiting arm carrier block 2 78 so that the limiting arm carrier block 1 74 is reset when it is not subjected to pressure from the wedge block 1 73 .

[0074] Furthermore, in order to realize the automatic action of the initial approach mechanism 7 (the wedge block 73 automatically pushes the limit arm carrier block 74) during the following process of the following mechanism 5, a force rod 71 is fixedly provided on the side of the guide seat 72 close to the arc frame 4. The length of the force rod 71 is greater than the position adjustment change of the carrier 6 by the positioning cylinder 10. The arc frame 4 is provided with an arc groove 42 along its circumference, and a first inclined groove 41 is provided at one end of the arc groove 42, and a second inclined groove 43 is provided at the other end of the arc groove 42. The force rod 71 can slide in the first inclined groove 41, the arc groove 42 and the second inclined groove 43. Preferably, the first inclined groove 41 is located directly above the arc frame 4, and the second inclined groove 43 is located directly to the side of the arc frame 4.

[0075] In this embodiment, the initial position of the limit arm 3 is set at Figure 1 The position in the middle, that is, on the vertical radius of the arc frame 4 (or close to Figure 14, and the support frame 4 is provided with a plurality of support members 74, and the support members 75 are provided with a plurality of support members 76. The support members 77 are provided with a plurality of support members 77 and 78. The support members 78 are provided with a plurality of support members 76. The support members 77 are provided with a plurality of support members 76. When the remaining 1 / 4 section in the inclined groove 41 moves, the wedge block 73 contacts the plane of the limit arm carrier block 74. At this time, it no longer pushes the limit arm carrier block 74 to move, and the distance between the two limit arms 3 reaches the minimum (the reason for setting the stage where it no longer pushes the limit arm carrier block 74 is to adapt to the fine-tuning mechanism 8, and the specific content is described in detail in the fine-tuning mechanism 8 part); when the force rod 71 enters the arc groove 42, the position of the wedge block 73 no longer changes until the force rod 71 reaches the second inclined groove 43, and the thrust applied to the force rod 71 is reduced when in the second inclined groove 43.

[0076] like Figure 10 and Figure 11 As shown, however, since the thickness of the plates required for different pressure vessels is different, it is difficult to clamp plates of different thicknesses by simply relying on the quantitative approach of the two limit arms 3 mentioned above. Therefore, an assembly cavity is provided in the limit arm 3 of this embodiment, and a radially movable plate 31 is provided in the assembly cavity. The radially movable plates 31 on the two groups of limit arms 3 can approach each other and can adaptively control the extension amount of their own radial movement along the limit arm 3 according to the different thicknesses of the plates.

[0077] First, the movement method of the radial movable plate 31 is: an axial movable plate 32 is set in the limiting arm 3, and one end of the corresponding axial movable plate 32 extends into the corresponding limiting arm carrier block 1 74 and the limiting arm carrier block 2 78. One surface of the axial movable plate 32 has a slope, and the side where the radial movable plate 31 contacts the slope of the axial movable plate 32 is also a slope.

[0078] In this embodiment, the fine-tuning mechanism 8 is used to apply axial tension to the axial movable plate 32, so that the radial movable plate 31 moves radially along the limiting arm 3, forming a state in which the radial movable plates 31 in the two limiting arms 3 clamp the cylinder.

[0079] like Figure 10 and Figure 11As shown, in addition, since the axial length of the limit arm 3 is relatively large, in order to avoid the clamping force being too small due to bending of one end of the limit arm 3 away from the limit arm carrier block 1 74 and the limit arm carrier block 2 78 due to its own weight, a tension spring 2 33 is fixed between the end of the axial moving plate 32 away from the carrier 6 and the limit arm 3. The tension spring 2 33 can apply tension to the end of the limit arm 3 away from the carrier 6, thereby providing an axial straightening effect on the limit arm 3.

[0080] Furthermore, in essence, the radially movable plate 31 does not need to exert a large pressure on the plate. It only needs to be able to contact the plate to limit its position, that is, it can limit the undesirable curvature deformation of the plate when it is curled.

[0081] Specifically, refer to Figure 5 、 Figure 7 、 Figures 9-12 As shown, in order to realize the adaptive axial tension of the axial movable plate 32 by the fine-tuning mechanism 8, the following scheme is provided:

[0082] The fine-tuning mechanism 8 includes a wheel axle 879, which is provided with two groups and distributed in the limiting arm carrier block 1 74 and the limiting arm carrier block 2 78. A reel 871 is installed on the wheel axle 879, and a mounting pin 321 is provided at one end of the axial movable plate 32 close to the reel 871. A steel rope 872 is rotatably arranged between the mounting pin 321 and the reel 871.

[0083] In this embodiment, when the wheel shaft 879 rotates, it can drive the reel 871 to rotate. When the reel 871 rotates, the steel rope 872 can be wound up, thereby applying tension to the axially movable plate 32.

[0084] In order to realize the rotation of the wheel axle 879, a fine-tuning gear 81 and a transmission structure are also provided. The axis of the fine-tuning gear 81 is the rotating shaft 87. The fine-tuning gear 81 can rotate. The transmission structure is used to convert the rotation of the rotating shaft 87 into the rotation of the wheel axle 879, so that the fine-tuning gear 81 can drive the wheel axle 879 to rotate, that is, the rotation of the fine-tuning gear 81 can control the extension amount of the radial movable plate 31. The extension amount of the radial movable plate 31 can be adjusted by adjusting the rotation amount of the fine-tuning gear 81 to adapt to plates of different thicknesses.

[0085] Specifically, the ends of the corresponding rotating shaft 87 pass through the corresponding limiting arm carrier block 1 74 and limiting arm carrier block 2 78. Auxiliary wedge blocks 2 873 are provided near the ends of the rotating shaft 87 through bearings. A groove structure for guiding the auxiliary wedge blocks 2 873 is provided on the limiting arm carrier block 1 74 and limiting arm carrier block 2 78 for carrying the auxiliary wedge blocks 2 873 ( Figure 9The vertical grooves for accommodating the auxiliary wedge block 2 873 shown on the middle limit arm support block 1 74 and the limit arm support block 2 78 are provided on both sides of the wedge block 1 73. When the plane of the wedge block 1 73 contacts the plane of the limit arm support block 1 74, the limit arm support block 1 74 will not move any further. At this time, the auxiliary wedge block 1 79 reaches the position of the auxiliary wedge block 2 873 and can push the auxiliary wedge block 2 873 to move along the radial direction of the arc frame 4 ( Figure 5 From the perspective, the auxiliary wedge block 2 873 moves in the vertical direction), so that the fine-tuning gear 81 gradually approaches the midpoint of the line connecting the limit arm carrier block 1 74 and the limit arm carrier block 2 78, that is, the upper and lower fine-tuning gears 81 approach each other, and a rack plate 82 is set on the side of the fine-tuning gear 81 close to the wedge block 1 73. A tension spring 1 83 is installed on one end of the rack plate 82 away from the midpoint of the line connecting the limit arm carrier block 1 74 and the limit arm carrier block 2 78. The other end of the tension spring 1 83 is fixed to the inner wall of the carrier 6, so that the rack plate 82 has axial freedom in the carrier 6, so that the fine-tuning gear 81 gradually approaches the limit arm carrier block 1 When the midpoint of the line connecting the arm-carrying block 1 74 and the limiting arm-carrying block 2 78 is reached, the rack plate 82 is directly pulled to move synchronously or the fine-tuning gear 81 can roll on the rack plate 82 (when the radial movable plate 31 is already pressed on the plate, the fine-tuning gear 81 is restricted from rotating, so the fine-tuning gear 81 drives the rack plate 82 to move synchronously and pulls the tension spring 1 83; when the radial movable plate 31 has not yet been pressed on the plate, the fine-tuning gear 81 rolls on the rack plate 82, so that the steel rope 872 driven by the transmission structure continuously applies tension to the axial movable plate 32 to adapt to plates of different thicknesses).

[0086] Preferably, a spring 2 8731 is provided between the auxiliary wedge block 2 873 and the carrier 6 at one end away from the midpoint of the line connecting the limiting arm carrier block 1 74 and the limiting arm carrier block 2 78, so that the auxiliary wedge block 2 873 can automatically reset when it is not under pressure.

[0087] like Figure 12 As shown, the transmission structure mentioned above includes: worm one 875, worm wheel one 876 and worm two 877. The worm one 875 is coaxial with the rotating shaft 87, and the worm wheel one 876 is engaged with one side of the worm one 875. The auxiliary wedge block two 873 extends from the frame, and the lower end of the worm wheel one 876 is rotatably mounted on the frame through a bearing. A hexagonal shaft 874 is provided in the middle of the worm wheel one 876, and the hexagonal shaft 874 is rotatably mounted in the carrier 6 through a bearing, and the worm wheel one 876 can move axially along the hexagonal shaft 874; the worm two 877 is coaxial with the hexagonal shaft 874, and the wheel shaft 879 is fixed with a worm wheel two 878 that can engage with the worm two 877.

[0088] like Figure 12As shown, when this embodiment is working, when the fine-tuning gear 81 moves, it first rolls on the rack plate 82, so that its own rotation can drive the worm 1 875 to rotate, and the worm wheel 1 876, the hexagonal shaft 874, the worm 2 877 and the worm wheel 2 878 to rotate, thereby driving the reel 871 to rotate, so that the reel 871 can apply tension to the steel rope 872, and then the radial moving plate 31 can be extended until the radial moving plate 31 is clamped on the plate. At this time, it is blocked by the plate and the radial moving plate 31 can no longer continue to extend, thereby limiting the axial movement of the axial moving plate 32, and then limiting the rotation of the reel 871, that is, the fine-tuning gear 81 can no longer rotate, and it can no longer roll on the rack plate 82, so it can only drive the rack plate 82 to move together, and the tension spring 1 83 is stretched.

[0089] It should be noted that during the movement of the fine-tuning gear 81, it can synchronously drive the worm wheel 1 876 to produce displacement through the auxiliary wedge block 2 873, so that the movement of the fine-tuning gear 81 will not affect the rotation of the worm gear 2 877, that is, it will not affect the extension of the radial moving plate 31 (the movement of the fine-tuning gear 81 is fixed, which includes the movement when rolling and the movement when not rolling, that is, the push amount of the auxiliary wedge block 1 79 on the auxiliary wedge block 2 873).

[0090] In addition, since the motion state of the fine-tuning gear 81 changes from rolling when moving to not rolling when moving, the meshing position of the fine-tuning gear 81 on the rack plate 82 is different when the radial movable plate 31 clamps different plates, resulting in the meshing position of the fine-tuning gear 81 on the rack plate 82 being difficult to reach the initial set position when the plate is rolled next time ( Figure 5 and Figure 13 The position shown is not engaged at this time), so a guide frame 85 is provided here, which is fixed to the side of the wedge block 73. A bearing slider 86 is symmetrically slidably provided on the guide frame 85. A spring telescopic rod 84 is installed on the bearing slider 86. One end of the spring telescopic rod 84 is fixed to the rack plate 82. Figure 13 In the state shown (the fine-tuning gear 81 and the rack plate 82 are not engaged), the spring telescopic rod 84 is in the longest state, and a limit block 9 is provided in the carrier 6 to limit the rack plate 82 from moving further to the left (refer to Figure 6 ), the spring telescopic rod 84 is in the natural state, the limit block 9 is located on the left side of the rack plate 82. When the wedge block 73 moves to the left, it can drive the guide frame 85 and the spring telescopic rod 84 to move to the left until the rack plate 82 is blocked by the limit block 9. At this time, the rack plate 82 reaches a position close to the fine-tuning gear 81. Due to the contraction of the spring telescopic rod 84 and the setting of the limit block 9, the rack plate 82 will not move to the left anymore. Then, when the fine-tuning gear 81 moves in the radial direction of the arc frame 4 and approaches the rack plate 82 ( Figure 13From the perspective of , the upper and lower fine-tuning gears 81 are close to each other), the fine-tuning gear 81 can engage with the corresponding rack plate 82, and conversely, when the wedge block 73 moves to the right, it can drive the rack plate 82 to disengage from the fine-tuning gear 81, and due to the return force of the tension spring 83, it is reset along its own axial direction, which is convenient for the next clamping operation.

[0091] When in use (in operation), (1) first calculate the following speed of the following mechanism 5, the extension of the adjusting cylinder 10, and the height of the lifting platform 11 to lift the arc frame 4 according to the radius of the pressure vessel after rolling and the rotation speed of the lower roller 12;

[0092] (2) The plate is fed horizontally onto the two lower rollers 12, and the upper roller 13 is operated to move vertically downward and press against the upper surface of the plate. The position of the upper roller 13 pressing down determines the position of the initial bending point of the plate (usually at 1 / 3 to 1 / 2 of the plate length) and the initial pressure applied. The second step: the first bending, driving the lower roller 12 to rotate, the two lower rollers 12 rotate synchronously in the same direction, under the combined action of the downward pressure of the upper roller 13 and the upward support force of the lower roller 12, the plate undergoes local plastic bending deformation in the area near the contact point, forming a small upward arc; the third step: forward movement and bending expansion, as the lower roller 12 continues to rotate, the plate continues to move forward, and the curved area already formed on the plate will be pushed forward and expanded as the plate moves forward. Due to the continuous downward pressure of the upper roller 13, the plate is always subjected to the bending moment when passing through the area directly below the upper roller 13, and the bending deformation occurs and accumulates progressively over the entire length of the plate;

[0093] (3) When the sheet is curled to a semicircle, the initial bending point of the coil reaches between the two limit arms 3. At this time, the follower motor 51 is controlled to work. When the follower motor 51 works, the entire movable frame 52 can be moved in the circumferential direction of the arc frame 4 through the engagement of the bevel gear 54 and the rack portion 53. When the movable frame 52 rotates on the arc frame 4, it can drive the carrier 6 to move synchronously, and then the force rod 71 can gradually move in the first inclined groove 41. When the force rod 71 moves in the front 3 / 4 section of the first inclined groove 41, the wedge block 1 73 contacts the slope of the limit arm carrier block 1 74, and the wedge block 1 73 pushes the limit arm carrier block 1 74 to move radially along the arc frame 4 ( Figure 13 The limit arm carrier block 1 74 moves downward from the viewing angle), and at the same time, the wedge block 1 73 drives the guide frame 85 to gradually move to the left until the rack plate 82 is blocked by the limit block 9. At this time, the rack plate 82 reaches a position close to the fine-tuning gear 81. Due to the contraction of the spring telescopic rod 84 and the setting of the limit block 9, the rack plate 82 will not move further to the left. As the force-bearing rod 71 moves the remaining 1 / 4 of the way into the first inclined slot 41, the wedge block 1 73 contacts the plane of the limit arm carrier block 1 74 ( Figure 14The state shown in the figure) is no longer pushing the limit arm carrier block 1 74 to move. At this stage, due to the mutual approach of the limit arm carrier block 1 74 and the limit arm carrier block 2 78, the height of the auxiliary wedge block 2 873 is consistent with the height of the auxiliary wedge block 1 79, and the fine-tuning gear 81 engages with the rack plate 82 ( Figure 14 The upper and lower auxiliary wedge blocks 873 can be brought closer to each other, so that the fine-tuning gear 81 can roll on the rack plate 82 ( Figure 15 status shown).

[0094] When the fine-tuning gear 81 is able to roll on the rack plate 82, the rotation of the fine-tuning gear 81 itself can drive the worm 1 875 to rotate, causing the worm wheel 1 876, the hexagonal shaft 874, the worm 2 877 and the worm wheel 2 878 to rotate, thereby driving the reel 871 to rotate (in addition, during the movement of the fine-tuning gear 81, it can synchronously drive the worm wheel 1 876 to move through the auxiliary wedge block 2 873, and the worm wheel 1 876 moves on the hexagonal shaft 874, so that the displacement of the fine-tuning gear 81 will not affect the extension amount of the radial moving plate 31 The reel 871 exerts a pulling force on the steel rope 872, and the radial movable plate 31 is extended until the radial movable plate 31 is clamped on the plate. At this time, the radial movable plate 31 is blocked by the plate and cannot be extended any further, thereby limiting the axial movement of the axial movable plate 32 and limiting the rotation of the reel 871. That is, the fine-tuning gear 81 cannot rotate any more and cannot roll on the rack plate 82. Therefore, it can only drive the rack plate 82 to move together, and the tension spring 83 is stretched until the force-bearing rod 71 is When the first cam 81 is in the state of being clamped by the plate 31, the limit arm 3 and the radially movable plate 31 clamp the plate and follow the movement thereof, until the force-bearing rod 71 enters the second cam 81. At this time, the force-bearing rod 71 is in the state of being clamped by the plate 31. The force rod 71 moves in the opposite direction, and the wedge block 1 73 moves in the opposite direction, so that the auxiliary wedge block 1 79 is separated from the auxiliary wedge block 2 873, and is pulled back by the tension spring 2 33, and the radial movable plate 31 is reset, and it no longer clamps the plate. Since the length of the second inclined groove 43 is smaller than that of the first inclined groove 41, the wedge block 1 73 will not move in the opposite direction excessively, and it will only reset the radial movable plate 31, but will not reset the limit arm carrier block 1 74 and the limit arm carrier block 2 78, so that the two limit arms 3 at this time can play a role in guiding the container cylinder.

[0095] (4) As the lower roller 12 is continuously driven, the end of the plate is also curled to form a pressure vessel cylinder. At this time, the head 2 is removed and the container cylinder can be removed;

[0096] (5) The following mechanism 5 is reset. During its reset process, when the force-bearing rod 71 reaches the end 3 / 4 section in the first inclined groove 41, the wedge block 1 73 continues to reset, and the limit arm carrier block 1 74 and the limit arm carrier block 2 78 move away from each other. At the same time, the wedge block 1 73 pulls the rack plate 82 away from the position where the fine-tuning gear 81 is located through the guide frame 85 and the spring telescopic rod 84. Then, under the reset of the tension spring 1 83, the rack plate 82 is reset to its original height, which is convenient for the next rolling action.

[0097] On the other hand, the present invention also provides a working method applicable to the above-mentioned pressure vessel cylinder plate rolling machine, comprising the following steps:

[0098] Step 1: Adjust the height of the arc frame 4 and the radial position of the platform 6 in the arc frame 4 according to the diameter of the cylinder to be rolled;

[0099] Step 2: The sheet is rolled up by the roller. When the sheet is rolled up to a semi-finished sheet and reaches the area where the limit arm 3 is located, the follower motor 51 is controlled to move, and the limit arm 3 is moved close to the semi-finished sheet through the action of the preliminary approach mechanism 7 and the fine adjustment mechanism 8, and the radial movable plate 31 is clamped to the semi-finished sheet. The radial movable plate 31 clamping the semi-finished sheet moves synchronously with the semi-finished sheet.

[0100] Step 3: When the semi-finished sheet material forms 3 / 4 of the cylinder, the motor 51 stops and the radial moving plate 31 performs the release action.

Claims

1. A pressure vessel barrel plate rolling machine, characterized in that: include: Rolling rollers, comprising an upper roller (13) and lower rollers (12) located on both sides below the upper roller (13), the plate is rolled by the upper roller (13) and the lower roller (12) and gradually forms a cylinder; An arc frame (4), wherein the arc frame (4) is located above the winding roller and is cocentric with the cylinder of the pressure vessel to be formed, the center of the arc frame (4) and the center of the upper roller (13) are located on the same vertical line, and a following mechanism (5) is provided on the arc frame (4), and the following mechanism (5) can deflect along the arc of the arc frame (4) and follow the cylinder, and a carrier (6) is radially mounted on the following mechanism (5), and a limiting arm (3) is provided on one side of the carrier (6), and the radial position of the carrier (6) in the arc frame (4) can be adjusted to match the cylinder of the pressure vessel to be formed; A preliminary approach mechanism (7), the preliminary approach mechanism (7) being arranged on the carrier (6) and being used to make the limiting arm carrier block 1 (74) and the limiting arm carrier block 2 (78) of the supporting limiting arm (3) approach the cylinder at one time in the process of the plate gradually forming the cylinder; A radial movable plate (31) is located in the limiting arm (3); a fine-tuning mechanism (8) is provided in the carrier (6); the fine-tuning mechanism (8) is used to control the radial movable plate (31) to clamp the cylinder for a second time.

2. The pressure vessel barrel plate rolling machine according to claim 1, characterized in that: The limiting arm (3) has an assembly cavity therein, and the assembly cavity is provided with: An axially movable plate (32), one end of each axially movable plate (32) extending into a corresponding limiting arm carrier block 1 (74) and a limiting arm carrier block 2 (78), and a surface of the axially movable plate (32) having an inclined surface; A radial movable plate (31) is in contact with the axial movable plate (32), and the side where the radial movable plate (31) contacts the inclined surface of the axial movable plate (32) is also an inclined surface. The fine-tuning mechanism (8) is used to apply an axial pulling force to the axial movable plate (32), so that the radial movable plate (31) can move radially along the limiting arm (3), forming a state in which the radial movable plate (31) in the two limiting arms (3) clamps the cylinder.

3. The pressure vessel barrel plate rolling machine according to claim 2, characterized in that: A second tension spring (33) is fixedly provided between the end of the axially movable plate (32) away from the carrier (6) and the limiting arm (3), and the second tension spring (33) can apply a pulling force to the end of the limiting arm (3) away from the carrier (6).

4. The pressure vessel barrel plate rolling machine according to claim 2, characterized in that: The fine-tuning mechanism (8) comprises: A wheel axle (879), wherein the wheel axle (879) is provided with two groups and is distributed in the limiting arm carrier block 1 (74) and the limiting arm carrier block 2 (78). A reel (871) is installed on the wheel axle (879). An end of the axial movable plate (32) close to the reel (871) is provided with a mounting pin (321). A steel rope (872) is rotatably provided between the mounting pin (321) and the reel (871). When the wheel axle (879) rotates, a pulling force can be applied to the axial movable plate (32) through the steel rope (872); A fine-tuning gear (81), wherein the intermediate shaft of the fine-tuning gear (81) is a rotating shaft (87), and the fine-tuning gear (81) is capable of moving in the direction of the line connecting the limiting arm carrier block 1 (74) and the limiting arm carrier block 2 (78); A transmission structure is provided, wherein the transmission structure is used to convert the rotation of the rotating shaft (87) into the rotation of the wheel axle (879).

5. The pressure vessel barrel plate rolling machine according to claim 4, characterized in that: The invention also includes a wedge block (73), the wedge block (73) is located in the carrier (6), the wedge block (73) can move axially along the arc frame (4), the limit arm carrier block (74) has a slope and a plane, the wedge block (73) has a slope and a plane, and when the wedge block (73) contacts the slope of the limit arm carrier block (74), the limit arm carrier block (74) can be pushed to move radially along the arc frame (4), and when the wedge block (73) contacts the plane of the limit arm carrier block (74), the limit arm carrier block (74) is no longer pushed.

6. The pressure vessel barrel plate rolling machine according to claim 5, characterized in that: The ends of the corresponding rotating shaft (87) pass through the corresponding limiting arm carrier block 1 (74) and limiting arm carrier block 2 (78), and the rotating shaft (87) is provided with auxiliary wedge block 2 (873) through bearings near the two ends, and auxiliary wedge block 1 (79) is provided on both sides of the wedge block 1 (73). When the plane of the wedge block 1 (73) contacts the plane of the limiting arm carrier block 1 (74), the auxiliary wedge block 1 (79) can push the auxiliary wedge block 2 (873), so that the fine-tuning gear (81) gradually approaches the midpoint of the line connecting the limiting arm carrier block 1 (74) and the limiting arm carrier block 2 (78); A rack plate (82) is located on a side of the fine-tuning gear (81) close to the wedge block 1 (73), and a tension spring 1 (83) is installed at one end of the rack plate (82) away from the midpoint of the line connecting the limit arm carrier block 1 (74) and the limit arm carrier block 2 (78), and the other end of the tension spring 1 (83) is fixed to the inner wall of the carrier (6).

7. The pressure vessel barrel plate rolling machine according to claim 6, characterized in that: The transmission structure includes: A worm gear (875), wherein the worm gear (875) is coaxial with the rotation axis (87); A worm gear (876) is meshed with one side of a worm (875), and a frame body is extended from the auxiliary wedge block (873). The lower end of the worm gear (876) is rotatably mounted on the frame body through a bearing. A hexagonal shaft (874) is provided in the middle of the worm gear (876), and the hexagonal shaft (874) is rotatably mounted in the carrier (6) through a bearing. The worm gear (876) can move axially along the hexagonal shaft (874). A second worm (877) is coaxial with the hexagonal shaft (874), and a second worm wheel (878) capable of meshing with the second worm (877) is fixed on the wheel shaft (879).

8. The pressure vessel barrel plate rolling machine according to claim 7, characterized in that: The invention also includes a guide frame (85), wherein the guide frame (85) is fixed to the side of the wedge block (73), and a bearing slider (86) is symmetrically slidably provided on the guide frame (85), and a spring telescopic rod (84) is installed on the bearing slider (86), and one end of the spring telescopic rod (84) is fixed to the rack plate (82).

9. A pressure vessel barrel plate rolling machine according to any one of claims 5 to 8, characterized in that: The preliminary approach mechanism (7) further includes a guide seat (72) fixed on a wedge-shaped block (73), a guide rail (61) for horizontally guiding the guide seat (72) is provided on the carrier (6), and a force-bearing rod (71) is fixed on one side of the guide seat (72) close to the arc frame (4); The arc frame (4) is provided with an arc groove (42) along its circumference, one end of the arc groove (42) is provided with a first oblique groove (41), and the other end of the arc groove (42) is provided with a second oblique groove (43), and the force-bearing rod (71) is capable of sliding in the first oblique groove (41), the arc groove (42) and the second oblique groove (43); The preliminary approach mechanism (7) further includes a swing arm (76), the swing arm (76) being cross-arranged to form a cross-rod structure, the center of the cross-shaped swing arm (76) being rotatably mounted on the inner wall of the carrier (6) via a central axis (77), the swing arm (76) being provided with a long hole, the limiting arm carrier block 1 (74) and the limiting arm carrier block 2 (78) being fixed with a convex portion (75) adapted to the long hole, the inner wall of the carrier (6) being provided with a vertically arranged guide groove adapted to the convex portion (75), for limiting the moving direction of the limiting arm carrier block 1 (74) and the limiting arm carrier block 2 (78) to be a vertical direction.

10. A working method for a pressure vessel cylinder plate rolling machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: adjusting the height of the arc frame (4) and the radial position of the carrier (6) on the arc frame (4) according to the diameter of the cylinder to be rolled; Step 2: The plate is rolled up by a rolling roller. When the plate is rolled up to a semi-finished plate and reaches the area where the limit arm (3) is located, the following mechanism (5) is controlled to move, and the limit arm (3) is moved close to the semi-finished plate by the action of the preliminary approach mechanism (7). The radial movable plate (31) is clamped to the semi-finished plate by the fine adjustment mechanism (8), and the radial movable plate (31) clamping the semi-finished plate moves synchronously with the semi-finished plate. Step 3: When the semi-finished plate forms a 3 / 4 cylinder, the following mechanism (5) stops moving and the radial moving plate (31) performs a releasing action.

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