Processing apparatus for longitudinal corrugation of metal plate

Abstract

A processing apparatus (500) for longitudinal corrugation of a metal plate, comprising a pair of sliding plates (50), a pair of material pressing plates (60), a shaping protrusion (81) and a driving mechanism, wherein the driving mechanism comprises two rows of sliding plate driving parts and a shaping protrusion driving part connected to the shaping protrusion; and the two rows of sliding plate driving parts are respectively positioned on the transverse outer sides of the pair of material pressing plates, and each row of sliding plate driving parts has a plurality of the sliding plate driving parts. Two-row sliding block driving parts of the processing apparatus are suitable for processing a corrugated plate having a long longitudinal length, and the two-row sliding block driving parts can apply force evenly, so that both sliding blocks and the material pressing plates can move at a relatively uniform speed. The transverse movement of the material pressing plates, the transverse movement of the sliding blocks and the vertical movement of a shaping block are linked, so that the forming of corrugated plates is more controllable.

Description

Device for processing longitudinal corrugation of metal plate Technical Field

[0001] The present invention relates to a device for processing longitudinal corrugations in metal plates, suitable for non-cutting processing of metal plates. The metal plates can be used in storage containers, particularly liquefied gas storage tanks on marine equipment such as ships or onshore liquefied gas storage tanks, where the liquefied gases include liquefied natural gas, liquid nitrogen, liquid oxygen, liquid hydrogen, and liquid helium. Background Art

[0002] LNG typically requires transportation via marine equipment, such as ships. An LNG receiving terminal primarily consists of dock unloading, LNG storage, processing, and export. LNG storage tanks, responsible for storage, are the longest construction period, require the most advanced technology, and present the most challenges. They are therefore consistently managed as the critical path of the entire project. Furthermore, the structural form and technological innovation of LNG storage tanks are a focus of attention for both domestic and international industry professionals. Technical issues

[0003] In LNG storage tanks, the corrugated sheeting used to form the sealing layer must maintain excellent sealing and stability under a variety of operating conditions. Therefore, the sheeting's configuration and quality are crucial, placing high demands on its manufacturing process. Existing corrugated sheeting manufacturing processes use simple bending and stamping dies to create the corrugations. This leaves room for improvement in material uniformity, smoothness, and strength, particularly at the intersection of the horizontal and vertical corrugations.

[0004] Therefore, it is necessary to provide a processing device to at least partially solve the above problems. Technical Solutions

[0005] The purpose of the present invention is to provide a processing device for processing longitudinal corrugations of metal plates. The two-row sliding block driving portion of the processing device of the present invention is particularly suitable for processing metal plates with a long longitudinal length. The two-row sliding block driving portion can apply force evenly, so that the sliding block and the pressing plate can move at a relatively uniform speed. Preferably, the present invention can link the lateral movement of the pressing plate, the lateral movement of the sliding block, and the vertical movement of the shaping block, making the shaping of the metal plate more controllable.

[0006] According to one aspect of the present invention, there is provided a device for processing longitudinal corrugations of a metal plate, the device comprising:

[0007] a pair of sliding plates capable of moving away from and toward each other in a lateral direction;

[0008] a pair of pressing plates, the pair of pressing plates being correspondingly located on top sides of the pair of sliding plates to press the blank plate tightly between the pair of sliding plates and the pair of pressing plates;

[0009] a shaping protrusion, the shaping protrusion being located between the pair of sliding plates and extending in the longitudinal direction, the bottom end of the shaping protrusion having a predetermined shaping profile with a transverse dimension gradually decreasing toward the bottom side, and the predetermined shaping profile being smooth;

[0010] A driving mechanism, comprising:

[0011] two rows of sliding plate driving parts, the two rows of sliding plate driving parts are respectively positioned laterally outside the pair of pressing plates, and each row of the sliding plate driving parts has a plurality of them; and

[0012] a shaping protrusion driving portion connected to the shaping protrusion,

[0013] The shaping protrusion driving portion and the sliding plate driving portion are linked together, so that when the sliding plate driving portion drives the pair of sliding plates to approach each other, the shaping protrusion driving portion drives the shaping protrusion to move downward.

[0014] In one embodiment, the driving mechanism includes a main horizontal plate and a vertical plate connected as one body, wherein the vertical plate extends downward from the center of the main horizontal plate in the transverse direction, wherein:

[0015] The sliding plate driving part is a driving block, the top of the driving block is fixed to the main horizontal plate, and a force-bearing part corresponding to the driving block is installed on the lateral outer side of the sliding plate, and the driving block and the force-bearing part are in contact with each other through an inclined surface;

[0016] The shaping protrusion is fixed to the bottom end of the vertical plate.

[0017] In one embodiment, the upper mold of the processing device is constructed to allow the pair of pressing plates to move vertically together with the main horizontal plate; and to allow the main horizontal plate to move vertically relative to the pair of pressing plates when the pair of pressing plates rest against the top sides of the pair of sliding plates.

[0018] In one embodiment, the pair of pressing plates are connected below the main horizontal plate, and the pair of pressing plates can approach each other in the lateral direction under the action of the driving mechanism.

[0019] In one embodiment, the driving mechanism also includes a pair of intermediate horizontal plates located between the pair of pressing plates and the main horizontal plate, the pair of pressing plates are connected to the main horizontal plate through the pair of intermediate horizontal plates, the pair of intermediate horizontal plates are fixed relative to the pair of pressing plates in the horizontal direction, and the pair of intermediate horizontal plates are fixed relative to the main horizontal plate in the vertical direction.

[0020] In one embodiment, both longitudinal ends of the pair of intermediate horizontal plates are provided with guide rail grooves extending in the transverse direction, and the main horizontal plate is provided with guide rails accommodated in the guide rail grooves, and the pair of intermediate horizontal plates and the pair of pressing plates are suspended and connected below the main horizontal plate through the cooperation of the guide rails and the guide rail grooves.

[0021] In one embodiment, the intermediate horizontal plate is always in contact with the lower surface of the main horizontal plate during the entire processing process, and a second sliding block is provided between the intermediate horizontal plate and the main horizontal plate.

[0022] In one embodiment, the driving mechanism includes a spring extending laterally between the main horizontal plate and the intermediate horizontal plate, one end of the spring abuts against a first abutment portion, and the other end of the spring abuts against a second abutment portion, the first abutment portion is fixed relative to the intermediate horizontal plate, and the second abutment portion is fixed relative to the main horizontal plate, and an opening is formed on the intermediate horizontal plate for receiving the second abutment portion and allowing the second abutment portion to slide therein, and the spring is constructed to actuate the pressing plate laterally.

[0023] In one embodiment, a pressure source nitrogen spring is provided between the intermediate horizontal plate and the pair of pressing plates, and the pressure source nitrogen spring is constructed to provide pressure to the pair of pressing plates, and can be locked when it is at its maximum stretched length to allow the pair of pressing plates to move vertically with the main horizontal plate.

[0024] In one embodiment, the processing device includes a lower mold, the pair of sliding plates are installed on the lower mold, and the lower mold also includes a limit member positioned on the lateral outside of the two rows of sliding plate driving parts, and when the driving mechanism moves downward, the limit member contacts the corresponding lateral outer surface of the sliding plate driving part.

[0025] In one embodiment, the limiting members are two rows of limiting members corresponding one-to-one to the two rows of sliding plate driving parts, and a first slider or roller is installed on the surface of each limiting member that contacts the sliding plate driving part.

[0026] In one embodiment, the bottom of the pressing plate is provided with two groups of protrusions corresponding to the transverse corrugations formed on the blank plate, and the two groups of protrusions are arranged in the longitudinal direction. The positions of the protrusions adjacent to the shaping protrusions are provided with characteristic structures corresponding to the pattern features on the transverse corrugations, wherein the characteristic structures include positioning protrusions, and the positioning protrusions are used to penetrate into the concave parts on the corresponding pattern features on the blank plate.

[0027] In one embodiment, under the action of the driving mechanism, the pair of sliding plates approach each other at a first predetermined speed, the shaping protrusion moves downward at a second predetermined speed, and the pair of pressing plates approach each other at a third predetermined speed, and the first predetermined speed, the second predetermined speed and the third predetermined speed are specifically related to the predetermined forming profile of the intersection of the transverse corrugation and the longitudinal corrugation.

[0028] In one embodiment, the pair of press plates are driven by the pair of sliding plates. Beneficial effects

[0029] The drive mechanism of the processing device of the present invention is uniquely configured for the desired corrugated shape. Specifically, the speeds of the various sections of the extruded sheet moving in different directions are specifically correlated, making the forming process particularly suitable for corrugated sheet with the desired corrugated shape. The corrugated sheet produced using this process exhibits excellent material uniformity, smoothness, and strength at the formed corrugations, particularly at the intersection of the transverse and longitudinal corrugations. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] To better understand the above and other objects, features, advantages, and functions of the present invention, reference may be made to the preferred embodiments shown in the accompanying drawings. Like reference numerals in the accompanying drawings refer to like components. Those skilled in the art should understand that the accompanying drawings are intended to illustrate preferred embodiments of the present invention by way of illustration and are not intended to limit the scope of the present invention. The components in the drawings are not drawn to scale.

[0031] FIG1 is a schematic diagram of a processing device according to some preferred embodiments of the present invention;

[0032] FIG2 is a side view of the processing device in FIG1 ;

[0033] FIG3 is a schematic diagram of an upper mold of the processing device in FIG1 ;

[0034] FIG4 is a schematic diagram of the lower mold of the processing device in FIG1 ;

[0035] FIG5 is a schematic diagram of the processing device in FIG1 with the main horizontal plate removed;

[0036] FIG6 is a schematic diagram of the view in FIG5 with the intermediate horizontal plate further removed;

[0037] FIG. 7 is a separate schematic diagram of the slide plate driving portion and the force-bearing portion of the processing device in FIG. 1 .

[0038] Reference numerals:

[0039] Processing device 500

[0040] Sliding plate 50

[0041] Lower mold 53

[0042] Limiting member 54

[0043] First slider 55

[0044] Transverse corrugated recessed portion 56

[0045] Longitudinal corrugated recessed portion 57

[0046] Guide rail groove 58

[0047] Pressing plate 60

[0048] Second contact portion 61

[0049] First contact portion 62

[0050] Guide rail bracket 63

[0051] Guide Rail 631

[0052] Main horizontal slab 71

[0053] Vertical plate 72

[0054] Intermediate horizontal plate 73

[0055] Pressure source nitrogen spring 74

[0056] protrusion 76

[0057] Feature Structure 761

[0058] Drive block 77

[0059] Incline 771

[0060] Second slider 78

[0061] Spring member 79

[0062] Shaping bulge 81 Modes for Carrying Out the Invention

[0063] Now referring to the accompanying drawings, the specific embodiments of the present invention will be described in detail. What is described here is only the preferred embodiment of the present invention. Those skilled in the art can think of other ways to implement the present invention based on the preferred embodiment, and the other ways also fall within the scope of the present invention.

[0064] The present invention provides a processing device for processing metal plates, particularly suitable for non-cutting metal plate processing. The metal plates can be used in liquefied gas storage tanks or land-based storage tanks in transportation equipment, particularly marine equipment such as ships. Storage containers for these metal plates include, for example, LNG storage containers. These storage containers can be marine liquefied gas storage containers or land-based cryogenic liquid storage facilities. Figures 1-7 illustrate schematic diagrams of a processing device according to a preferred embodiment of the present invention.

[0065] First, it should be noted that the directional and positional terms mentioned in this disclosure are intended to be illustrative rather than restrictive. Descriptions of component positions should be understood as relative positions, not absolute positions, and descriptions of component extension directions should be understood as relative directions, not absolute directions. Directional and positional terms related to processing devices can be understood with reference to the positions and orientations of the components illustrated in Figures 1-7. For example, terms such as "top," "upward," "bottom," and "downward" regarding components of various processing devices can be interpreted with reference to the orientation of the processing devices illustrated in the accompanying drawings. "Upward" and "downward" refer to the vertical direction, as indicated by D3; "transverse" and "longitudinal" refer to two perpendicular horizontal directions, with the transverse direction indicated by D2 and the longitudinal direction indicated by D1. The vertical direction D3, transverse direction D2, and longitudinal direction D1 are orthogonal in space. In metal sheets (also known as corrugated sheet because they have corrugations), "longitudinal corrugations" refer to corrugations extending in the longitudinal direction, while "transverse corrugations" refer to corrugations extending in the transverse direction.

[0066] The processing device of the present invention is used for processing a blank plate which has been formed with a transverse corrugated plate, so as to process a longitudinal corrugated plate thereon.

[0067] Referring to Figures 1 to 7, the processing device 500 of the present invention has some preferred settings compared to traditional processing devices. First, referring to Figures 1 and 2, the processing device 500 includes an upper mold and a lower mold 53. The lower mold 53 has a pair of sliding plates 50 arranged side by side in the transverse direction, and the upper mold has a pair of pressing plates 60 arranged side by side in the transverse direction, a shaping protrusion 81 and a driving mechanism. Among them, the pair of sliding plates 50 can move away from and approach each other in the transverse direction, and the pair of pressing plates 60 are correspondingly located on the top sides of the pair of sliding plates 50, so that the corrugated plate can be pressed between the pair of sliding plates 50 and the pair of pressing plates 60. The shaping protrusion 81 is located between the pair of pressing plates 60, and the bottom end of the shaping protrusion 81 has a predetermined molding profile with a transverse dimension gradually decreasing toward the bottom side. The driving mechanism includes a sliding plate driving part in contact with the pair of sliding plates 50, and a shaping protrusion driving part connected to the shaping protrusion 81.

[0068] The drive mechanism may include a main horizontal plate 71 and a vertical plate 72 connected as one body. The vertical plate 72 extends downward from the center of the main horizontal plate 71 in the transverse direction. The sliding plate driving unit is, for example, a drive block 77, the top of which is fixed to the main horizontal plate 71. A shaping protrusion 81 is integrally formed at the bottom end of the vertical plate 72, i.e., the vertical plate 72 constitutes the shaping protrusion driving unit. There are multiple drive blocks 77, which are arranged in two rows, and the two rows of drive blocks 77 are respectively positioned laterally outward of the pair of press plates 60. Force-bearing portions 51 corresponding to the drive blocks 77 are mounted on the laterally outward sides of the pair of sliding plates 50. The surface of the drive block 77 that applies force to the force-bearing portion 51 is an inclined surface 771, and the surface of the force-bearing portion 51 facing the inclined surface is also an inclined surface. The inclined surface contact enables the motion of the drive block 77 to be converted into lateral movement of the sliding plate 50 when it moves vertically downward.

[0069] Specifically, when the driving mechanism drives the shaping protrusion 81 to move downward at a uniform speed, the inclined surface of the driving block 77 contacts the force-bearing portion 51 of the sliding plate 50, causing the sliding plate 50 as a whole to move at a uniform speed. Alternatively, the inclined surface can be an irregular inclined surface, in which case the uniform downward movement of the driving block 77 may be converted into a lateral variable speed movement of the sliding plate 50. The lower mold 53 also includes a limiter 54 positioned on the lateral outer side of the two rows of driving blocks 77. When the driving mechanism moves downward, the limiter 54 contacts the corresponding lateral outer surface of the driving block 77. The limiters 54 are two rows of limiters corresponding to the two rows of driving blocks 77, and a first slider 55 or roller is installed on the surface of each limiter 54 that contacts the driving block 77. The driving action of the two rows of driving blocks 77 can reduce the thinning rate of the blank plate.

[0070] The pair of press plates 60 are connected below the main horizontal plate 71, and the pair of press plates 60 can approach each other in the transverse direction under the action of the driving mechanism. Referring to Figures 5 and 6, both longitudinal ends of the pair of press plates 60 are provided with guide rail grooves extending in the transverse direction. The main horizontal plate 71 is provided with guide rails 631 accommodated in the guide rail grooves. The guide rails 631 are provided on the guide rail brackets 63. The guide rails 631 cooperate with the guide rail grooves to allow the pair of press plates 60 to be suspended below the main horizontal plate 71. Similarly, in order to enable the pair of sliding plates 50 to move laterally, the pair of sliding plates 50 are also provided with guide rail grooves 58 at both longitudinal ends.

[0071] The drive mechanism also includes a pair of intermediate horizontal plates 73 located between the pair of press plates 60 and the main horizontal plate 71. The pair of press plates 60 are connected to the main horizontal plate 71 via the pair of intermediate horizontal plates 73. The pair of intermediate horizontal plates 73 are fixed horizontally relative to the pair of press plates 60 and vertically relative to the main horizontal plate 71. The intermediate horizontal plates 73 are in contact with the lower surface of the main horizontal plate 71. In other words, in the vertical direction, the intermediate horizontal plates 73 continuously contact the lower surface of the main horizontal plate 71 and are fixed relative to the main horizontal plate 71, but are movable relative to the press plates 60. In a horizontal plane (defined by the transverse and longitudinal directions), the intermediate horizontal plates 73 are fixed relative to the press plates 60 but movable relative to the main horizontal plate 71, and can move laterally relative to the main horizontal plate 71 along with the press plates 60. In order to facilitate the intermediate horizontal plate 73 to slide relative to the main horizontal plate 71 while being in close contact with the bottom surface of the main horizontal plate 71 , a second sliding block 78 is provided between the intermediate horizontal plate 73 and the main horizontal plate 71 .

[0072] Referring to Figures 5 and 6, a laterally extending spring member 79 is further disposed between the press plate 60 and the main horizontal plate 71. One function of the spring member 79 is to act as a reset spring, used to reset the pair of press plates 60 relative to each other after machining is completed. In this case, the spring member 79 may be a delay spring. Alternatively, the spring member 79 can also serve as a driving member for driving the intermediate horizontal plate 73, thereby driving the press plate 60. In this case, one end of the spring member 79 abuts against the first abutment 62, and the other end of the spring member 79 abuts against the second abutment 61. The first abutment 62 is fixed relative to the intermediate horizontal plate 73, and the second abutment 61 is fixed relative to the main horizontal plate 71 (for example, the second abutment 61 is fixed to the vertical plate 72). An opening is formed in the intermediate horizontal plate 73 to receive and allow the second abutment 61 to slide therein. The spring member 79 can still be a time-delay spring. After the pressing plate 60 falls to the position where it engages with the sliding plate 50, the spring member 79 begins to apply force to the first abutment portion 62, thereby squeezing the pair of pressing plates 60 toward the middle. Alternatively, the first abutment portion 62 and the second abutment portion 61 can be installed in reverse. The spring member 79 does not serve as a member for actuating the pair of pressing plates 60 toward each other, but rather serves as a member for biasing the pair of pressing plates 60 away from each other after processing is completed, as described above.

[0073] It will be understood that the shaping protrusion driving unit and the sliding plate driving unit are fixed relative to each other, the shaping protrusion driving unit and the shaping protrusion 81 are fixedly connected, and the sliding plate driving unit drives the sliding plate 50 by frictional contact. This arrangement results in that although the speed and direction of movement of the shaping protrusion driving unit and the sliding plate driving unit are consistent, the speed and direction of movement of the shaping protrusion 81 and the sliding plate 50 are different. The speed at which the pair of sliding plates 50 move toward each other laterally under the action of the driving mechanism is referred to as the first predetermined speed, and the speed at which the driving mechanism (e.g., the main horizontal plate) moves downward is referred to as the second predetermined speed. The pair of press plates 60 can also move toward each other laterally under the drive of the driving mechanism, and this speed is referred to as the third predetermined speed. The first predetermined speed, the second predetermined speed, and the third predetermined speed are specifically related to the predetermined forming profile of the intersection of the transverse corrugations and the longitudinal corrugations.

[0074] In addition to the aforementioned laterally extending spring member 79, the driving mechanism can have a variety of other options for the driving mode of a pair of press plates 60. For example, in other embodiments, the pair of press plates are driven by the pair of sliding plates, that is, the driving mechanism indirectly drives the press plates by driving a pair of sliding plates. In this case, there can be a bonding feature between the press plate and the sliding plate, and the bonding feature allows the press plate and the sliding plate to separate in the vertical direction, but limits the lateral separation of the two under the fitted state. Alternatively, the driving mechanism includes a press plate drive portion that applies force to the pair of press plates and is different from the spring member 79, and the press plate drive portion is independent of the sliding plate drive portion or is formed into one with the sliding plate drive portion. When the press plate drive portion and the sliding plate drive portion are formed into one, an inclined surface can also be provided on the inner side surface of the driving block, and when the inclined surface at its bottom applies force to the sliding block, the inclined surface on its inner side surface applies force to the press plate.

[0075] Preferably, the upper mold is also constructed to allow a pair of pressing plates 60 to move vertically along with the main horizontal plate 71; and to allow the main horizontal plate 71 and the intermediate horizontal plate 73 to move vertically relative to the pair of pressing plates 60 when the pair of pressing plates 60 abut against the top side of the pair of sliding plates 50.

[0076] The upper die may include a pressure source nitrogen gas spring 74 disposed between the intermediate horizontal plate 73 and the pair of press plates 60. The pressure source nitrogen gas spring 74 is configured to be locked when it is at its maximum stretched length to allow the pair of press plates 60 to move vertically along with the main horizontal plate 71 and the intermediate horizontal plate 73. The top end of the pressure source nitrogen gas spring 74 is fixed to the intermediate horizontal plate 73, and the bottom end of the pressure source nitrogen gas spring 74 is fixed to the pair of press plates 60.

[0077] When it is necessary to lift the pressing plate 60, the drive mechanism can be actuated to move it upward. In the first stage of the process of the driving mechanism moving upward, the main horizontal plate 71 and the intermediate horizontal plate 73 move upward relative to the pressing plate 60, and the pressure source nitrogen spring 74 returns to its original length between the intermediate horizontal plate 73 and the pressing plate 60. When the pressure source nitrogen spring 74 is stretched to its maximum length, the upward movement process of the driving mechanism (which can be understood as the upward movement process of the main horizontal plate 71) enters the second stage. In the second stage of the driving mechanism moving upward, the pressing plate 60 moves upward together with the main horizontal plate 71 and the intermediate horizontal plate 73, and the pressing plate 60 moves upward away from the sliding plate 50, allowing the operator to place the blank plate between the pressing plate 60 and the sliding plate 50.

[0078] After the blank sheet has been placed between the press plate 60 and the sliding plate 50, the drive mechanism can be activated to move it downward. During the first phase of the drive mechanism's downward movement, the pressure source nitrogen spring 74 is at its maximum stretched length, and the press plate 60 is actuated by the drive mechanism to move downward with the drive mechanism. When the press plate 60 rests on the top surface of the sliding plate 50, the drive mechanism's downward movement (which can be understood as the downward movement of the main horizontal plate 71) enters the second phase. During this second phase, the press plate 60 no longer moves vertically. The drive mechanism, along with the intermediate horizontal plate 73 and the main horizontal plate 71, moves downward relative to the press plate 60, compressing the pressure source nitrogen spring 74. The second phase ends when the pressure source nitrogen spring 74 reaches its minimum length (i.e., when it is maximally compressed). It should be noted that the pressure source nitrogen spring 74 is mounted in an inverted manner. When installed, its top faces downward and its bottom faces upward.

[0079] In the second stage of the downward movement of the driving mechanism, the shaping protrusion 81, the sliding plate 50, and the pressing plate 60 move under the action of the driving mechanism and shape the blank. In other words, the first stage of the downward movement of the driving mechanism drives the pressing plate 60 downward; the second stage of the downward movement of the driving mechanism drives the shaping protrusion 81 downward, drives the pair of sliding plates 50 and the pair of pressing plates 60 to move laterally toward the center.

[0080] The bottom surface of the pressing plate 60 is provided with protrusions 76 corresponding to the transverse corrugations on the blank plate. The protrusions 76 are divided into two groups, and the two groups of protrusions 76 are arranged longitudinally. A characteristic structure 761 corresponding to the pattern feature is provided at a position adjacent to the shaping protrusions 81 on the protrusions 76. The characteristic structure 761 includes a positioning protrusion, which is used to penetrate into a recessed portion on the corresponding pattern feature on the blank plate (the recessed portion may have been formed in a previous processing process, for example). The coordination of the positioning protrusion and the recessed portion facilitates the positioning and fixation of the blank plate, preventing the blank plate from shifting during processing. Furthermore, in the first stage of the processing, the corresponding recessed portion on the blank plate can be positioned first by the positioning protrusion. Then, in the second stage, the shaping protrusions 81, a pair of sliding plates 50, and a pair of pressing plates 60 are driven downward to move them laterally toward the center. This solution can reduce the thinning rate of the blank plate.

[0081] Correspondingly, the lower die 53 has a transverse corrugated recess 56 and a longitudinal corrugated recess 57. In the present invention, the longitudinal corrugation forming base does not have an upwardly movable shaping base. Instead, it is provided with a vertically fixed longitudinal corrugated recess 57, which increases the degree of forming freedom. When the blank sheet, which has undergone the first two steps, is pressed by the shaping protrusions 81 and adapted to the longitudinal corrugated recess 57, a corrugated sheet with a desired predetermined shape and profile can be formed. This arrangement reduces the external forces acting on the blank sheet (it is no longer subject to the upward force of the shaping base), further reducing the thinning rate.

[0082] The above setting associates the lateral movement speed of a pair of sliding plates 50 (first predetermined speed), the downward movement speed of the shaping protrusion 81 (second predetermined speed) and the lateral movement speed of a pair of pressing plates 60 (third predetermined speed), and this association is specific to the predetermined forming profile of the intersection of the lateral corrugation and the longitudinal corrugation.

[0083] In addition to the above embodiments, the drive mechanism may also have other configurations to achieve a specific correlation between the first predetermined speed, the second predetermined speed, and the third predetermined speed with respect to the predetermined forming profile of the intersection portion. For example, the drive mechanism may be fixedly connected to the sliding plate and / or the pressing plate, and / or connected to the shaping protrusion in a rolling or sliding friction manner; the drive mechanism itself may include a non-fixed linkage mechanism, for example, the drive mechanism may include a first drive part, a second drive part, and a drive part, the first drive part, the second drive part, and the drive part have different movement directions and / or speeds, the first drive part may be connected to the sliding plate, the second drive part may be connected to the shaping protrusion, and the drive part may be connected to the pressing plate; the drive mechanism may include a control module, and the control module may be programmed to drive the sliding plate to move closer to each other at a first predetermined speed while driving the shaping protrusion to move downward at a second predetermined speed and driving the pressing plate to move closer to each other at a third predetermined speed.

[0084] In the processing device 500 of the present invention, it is ensured that the pressing plate 60 can move vertically relative to the main horizontal plate 71, and a pair of pressing plates 60 can be squeezed laterally toward the shaping protrusion 81. This arrangement enables the pressing plate 60 to simultaneously achieve two functions: positioning the blank plate and shaping the blank plate.

[0085] The operation process of the processing device 500 will be described below with reference to FIG. 1 to FIG. 5 .

[0086] When the processing device 500 is needed, the drive mechanism can be first actuated to move upward to lift the blank holder 60. Specifically, in the first stage of the drive mechanism's upward movement, the pressure source nitrogen spring 74 returns to its original length, the blank holder 60 remains stationary, and the main horizontal plate 71 and the intermediate horizontal plate 73 move upward relative to the blank holder 60. In the second stage of the drive mechanism's upward movement (which can be understood as the main horizontal plate 71 moving upward), the pressure source nitrogen spring 74 is at its maximum stretched length, and the drive mechanism drives the blank holder 60 upward, moving the blank holder 60 upward away from the sliding plate 50. In addition, at this time, it is also necessary to move the pair of sliding plates 50 laterally away from each other, and the pair of blank holders 60 laterally away from each other.

[0087] The operator then places the blank sheet into the gap between the sliding plate 50 and the press plate 60, ensuring that the transverse corrugations of the blank sheet are positioned precisely within the recessed portions and pressed against by the correspondingly shaped protrusions 76. The drive mechanism is then actuated, causing it to move downward. During the first stage of the drive mechanism's downward movement, the pressure source nitrogen spring 74 is at its maximum extension, and the press plate 60, along with the main horizontal plate 71 and the intermediate horizontal plate 73, moves downward until it abuts the top side of the sliding plate 50. At this point, the flat portion of the blank sheet and the pair of recessed portions on the transverse corrugations are compressed by the press plate 60 and the sliding plate 50.

[0088] The drive mechanism then continues to move downward, marking the second stage of the drive mechanism's downward movement. During this second stage, the pressure source nitrogen spring 74 is compressed, and the drive mechanism can no longer actuate the blank holder 60 downward. This second stage of the drive mechanism's actuation (i.e., the second stage of the main horizontal plate 71's downward movement) primarily actuates the shaping protrusions 81 downward and laterally actuates the sliding plate 50 and blank holder 60.

[0089] In the second stage of the actuation of the drive mechanism, the shaping protrusion 81 fixedly mounted at the bottom end of the vertical plate 72 of the drive mechanism moves downward at a second predetermined speed along with the drive mechanism. At the same time, the driving block 77 of the drive mechanism contacts and pushes the force-bearing portion 51 of the sliding plate 50. When the drive mechanism moves downward at the second predetermined speed, the pair of sliding plates 50 approach each other at the first predetermined speed. At the same time, the delayed spring member 79 begins to act, causing the pair of press plates 60 to also approach each other. Alternatively, the press plates 60 approach each other under the drive of the pair of sliding plates 50 or under the direct drive of the drive mechanism. Among them, the first to third predetermined speeds are specifically related. "Specifically related" means that the relationship between the second predetermined speed, the first predetermined speed, and the third predetermined speed is specially set for the predetermined forming profile of the intersection. This special setting is, for example, to take into account the concave-convex morphology of the intersection, setting a higher speed in the corresponding period where rapid deformation is required, and setting a lower speed in the corresponding period where gentle deformation is required.

[0090] During the second stage of drive mechanism activation, the pair of press plates 60, the shaping protrusions 81, and the pair of slide plates 50 work together to compress the blank sheet to form the predetermined longitudinal corrugations and intersections. The speeds of the various components extruding the blank sheet in different directions are specifically correlated, making the forming process particularly suitable for corrugated sheets with the predetermined corrugated shape. Furthermore, the pattern features created by the preceding processing device create predetermined weak points in the transverse corrugations of the blank sheet, allowing the intersections of the longitudinal and transverse corrugations to deform and form toward the predetermined shape during the processing of the processing device.

[0091] At the end of the second stage of the drive mechanism actuation, the pair of sliding plates 50 are at their closest relative positions, the pair of pressing plates 60 are also at their closest relative positions, and the shaping protrusions 81 are pressed between the pair of sliding plates 50. At this time, the pressure source nitrogen spring 74 is at its shortest position.

[0092] The first to third predetermined speeds can be uniform or non-uniform. For example, in the first stage of the downward movement of the driving mechanism, the main horizontal plate 71 as a whole can have a uniform downward movement speed. In the second stage of the downward movement of the main horizontal plate 71, due to the reaction force of the pressure source nitrogen spring 74, the downward movement speed, that is, the speed of the driven shaping protrusion 81 (the second predetermined speed), can also be variable, such as a gradually decelerating speed. Alternatively, in other embodiments, the control system for controlling the downward movement of the driving mechanism can be pre-programmed and execute such operating logic: in the second stage, the force acting on the driving mechanism is gradually increased, and this increased force can be balanced with the reaction force of the pressure source nitrogen spring 74, so that the driving mechanism still maintains a uniform downward speed in the second stage. In other words, the speed of the driven shaping protrusion 81 (the second predetermined speed) at this time can still be approximately uniform. Regardless of whether the downward movement speed of the shaping protrusion 81 in the second stage is uniform, the movement speed of the sliding plate 50 can be linearly related to the second predetermined speed. For example, when the second predetermined speed is non-uniform, the first predetermined speed and the third predetermined speed are also non-uniform; when the second predetermined speed is uniform, the first predetermined speed and the third predetermined speed are also uniform. Alternatively, the force-applying inclined surface of the driving block 77 can be set as an irregular inclined surface, so that the first predetermined speed and the third predetermined speed can be non-linearly related to the second predetermined speed. For example, when the second predetermined speed is uniform, the first predetermined speed and the third predetermined speed can be non-uniform.

[0093] It should be noted that the "speed" mentioned in the present invention should be understood as the size of the rate value of the speed. For example, the "first predetermined speed is not equal to the second predetermined speed" mentioned in the present invention means that at any time node, the rate value of the transient first predetermined speed is not equal to the rate value of the transient second predetermined speed.

[0094] As can be seen from the above embodiments, the drive mechanism of the processing device of the present invention is uniquely configured for a predetermined corrugated shape. Specifically, the operating speeds of the various parts of the extruded sheet moving in different directions are specifically correlated, making the forming process particularly suitable for corrugated sheet with the predetermined corrugated shape. The corrugated sheet produced using this process exhibits excellent material uniformity, smoothness, and strength at the formed corrugations, especially at the intersection of the transverse and longitudinal corrugations.

[0095] It should be noted that the processing device has two corresponding protrusions, and the processed corrugated plate has two transverse corrugations, thereby having two intersecting parts. Such corrugated plates have more uses than traditional corrugated plates. For example, the corrugated plates can be bent appropriately so that they can be used at the corners of storage containers to avoid liquid leakage at the corners. It can be understood that the two-row sliding block driving part of the processing device of the present invention is particularly suitable for processing such corrugated plates with a long longitudinal length. The two-row sliding block driving part can apply force evenly, so that the sliding blocks and the pressing plate can move at a relatively uniform speed.

[0096] The present invention also provides a corrugated plate obtained by processing the processing device of the above embodiment, and a storage container having the corrugated plate, wherein the storage container is, for example, a liquefied gas storage tank of marine equipment such as a ship, wherein the liquefied gas is, for example, liquefied natural gas, liquid nitrogen, liquid oxygen, liquid hydrogen, and liquid helium.

[0097] The above description of various embodiments of the present invention is provided for the purpose of description to one of ordinary skill in the relevant art. It is not intended to exclude or limit the present invention to a single disclosed embodiment. As above, a person of ordinary skill in the field of the above teachings will understand the various substitutions and variations of the present invention. Therefore, although some alternative embodiments are specifically described, a person of ordinary skill in the art will understand or relatively easily develop other embodiments. The present invention is intended to include all substitutions, modifications and variations of the present invention described herein, as well as other embodiments that fall within the spirit and scope of the present invention described above.

Claims

1. A device for processing longitudinal corrugations of metal plates, characterized in that: The processing device (500) comprises: a pair of sliding plates (50) capable of moving away from and toward each other along a transverse direction (D2); a pair of pressing plates (60), the pair of pressing plates being correspondingly located on the top sides of the pair of sliding plates (50) so as to press the blank plate between the pair of sliding plates (50) and the pair of pressing plates (60); a shaping protrusion (81), the shaping protrusion being located between the pair of pressing plates (60) and extending longitudinally, the bottom end of the shaping protrusion having a predetermined shaping profile with a transverse dimension gradually decreasing toward the bottom side, the predetermined shaping profile being smooth; A driving mechanism, comprising: Two rows of sliding plate driving parts, the two rows of sliding plate driving parts are respectively positioned on the lateral outsides of the pair of pressing plates (60), and each row of the sliding plate driving parts is plural; and a shaping protrusion driving portion connected to the shaping protrusion, The shaping protrusion driving portion and the sliding plate driving portion are linked, so that when the sliding plate driving portion drives the pair of sliding plates (50) to move closer to each other, the shaping protrusion driving portion drives the shaping protrusion (81) to move downward.

2. The processing device according to claim 1, characterized in that The driving mechanism comprises a main horizontal plate (71) and a vertical plate (72) connected as one body, wherein the vertical plate (72) extends downward from the center of the main horizontal plate in the transverse direction (D2), wherein: The sliding plate driving portion is a driving block (77), the top of the driving block is fixed on the main horizontal plate (71), and a force-bearing portion (51) corresponding to the driving block is installed on the lateral outer side of the sliding plate (50), and the driving block and the force-bearing portion are in contact via an inclined surface (771); The shaping protrusion (81) is fixed to the bottom end of the vertical plate (72), and the vertical plate (72) constitutes the shaping protrusion driving portion.

3. The processing device according to claim 2, characterized in that The upper mold of the processing device is constructed to allow the pair of pressing plates (60) to move vertically together with the main horizontal plate (71); and to allow the main horizontal plate (71) to move vertically relative to the pair of pressing plates (60) when the pair of pressing plates (60) abut against the top sides of the pair of sliding plates (50).

4. The processing device according to claim 2, characterized in that The pair of pressing plates (60) are connected below the main horizontal plate, and the pair of pressing plates (60) can approach each other in the transverse direction under the action of the driving mechanism.

5. The processing device according to claim 4, characterized in that The driving mechanism further comprises a pair of intermediate horizontal plates (73) located between the pair of pressing plates (60) and the main horizontal plate (71), wherein the pair of pressing plates are connected to the main horizontal plate via the pair of intermediate horizontal plates, the pair of intermediate horizontal plates (73) are fixed relative to the pair of pressing plates (60) in the horizontal direction, and the pair of intermediate horizontal plates (73) are fixed relative to the main horizontal plate (71) in the vertical direction.

6. The processing device according to claim 5, characterized in that Both longitudinal ends of the pair of intermediate horizontal plates (73) are provided with guide rail grooves extending in the transverse direction, and the main horizontal plate (71) is provided with guide rails (631) accommodated in the guide rail grooves, and the pair of intermediate horizontal plates (73) and the pair of pressing plates (60) are suspended and connected below the main horizontal plate (71) through the cooperation of the guide rails and the guide rail grooves.

7. The processing device according to claim 6, characterized in that The intermediate horizontal plate (73) always abuts against the lower surface of the main horizontal plate (71) during the entire processing process, and a second sliding block (78) is provided between the intermediate horizontal plate and the main horizontal plate.

8. The processing device according to claim 5, characterized in that The driving mechanism includes a spring member (79) extending laterally between the main horizontal plate (71) and the intermediate horizontal plate (73), one end of the spring member abuts against a first abutting portion (62), and the other end of the spring member abuts against a second abutting portion (61), the first abutting portion (62) is fixed relative to the intermediate horizontal plate (73), and the second abutting portion (61) is fixed relative to the main horizontal plate (71), and an opening is formed on the intermediate horizontal plate (73) for receiving the second abutting portion and allowing the second abutting portion to slide therein, and the spring member (79) is constructed to actuate the pressing plate (60) laterally.

9. The processing device according to claim 5, characterized in that A pressure source nitrogen spring (74) is provided between the intermediate horizontal plate (73) and the pair of pressing plates (60). The pressure source nitrogen spring is configured to provide pressure to the pair of pressing plates (60) and, when it is at its maximum stretched length, can be locked to allow the pair of pressing plates (60) to move vertically with the main horizontal plate (71).

10. The processing device according to claim 1, characterized in that The processing device includes a lower mold (53), the pair of sliding plates (50) are mounted on the lower mold, and the lower mold also includes a limit member (54) positioned on the lateral outer side of the two rows of sliding plate driving parts, and when the driving mechanism moves downward, the limit member (54) contacts the lateral outer surface of the corresponding sliding plate driving part.

11. The processing device according to claim 10, characterized in that The limiting member (54) includes two rows of limiting members corresponding one to one to the two rows of sliding plate driving parts, and a first slider (55) or a roller is installed on the surface of each limiting member in contact with the sliding plate driving part.

12. The processing device according to claim 1, characterized in that The bottom of the pressing plate (60) is provided with two groups of protrusions (76) corresponding to the transverse corrugations formed on the blank plate, and the two groups of protrusions are arranged in the longitudinal direction. A characteristic structure (761) corresponding to the pattern features on the transverse corrugations is provided at a position adjacent to the protrusions and the shaping protrusions (81), wherein the characteristic structure includes a positioning protrusion, and the positioning protrusion is used to penetrate into the concave portion on the corresponding pattern feature on the blank plate.

13. The processing device according to claim 4, characterized in that Under the action of the driving mechanism, the pair of sliding plates (50) approach each other at a first predetermined speed, the shaping protrusion (81) moves downward at a second predetermined speed, and the pair of pressing plates approach each other at a third predetermined speed, and the first predetermined speed, the second predetermined speed and the third predetermined speed are related to the predetermined forming profile of the intersection of the transverse corrugation and the longitudinal corrugation.

14. The processing device according to claim 4, characterized in that The pair of press plates are driven by the pair of slide plates.

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