Liquefied gas storage tank shield nameplate bending device

Abstract

The invention provides a liquefied gas storage tank shield nameplate bending device which comprises a rack, the rack is provided with a material guide groove, a material falling opening and a bending cavity, the rack is further provided with a material cavity, a material pushing plate is arranged in the material storage cavity, and the rack is provided with a first driving assembly; a feeding push plate is arranged in the guide groove, and a second driving assembly is arranged on the rack. The rack is further provided with two driven rods and a third driving assembly, the two driven rods are located on the two opposite sides of the bending cavity respectively, one driven rod is provided with a convex pressing head, and the other driven rod is provided with a concave pressing head matched with the convex pressing head. The third driving assembly drives the two driven rods to get close to each other or get away from each other, and when the two driven rods get close to each other, the convex pressing head and the concave pressing head stretch into the bending cavity. The technical problems that the labor intensity is high and poor welding is easily caused when a metal nameplate is manually pressed are solved, and the technical effects that the labor intensity of welding the metal nameplate on a protective cover by an operator is relieved, and the welding efficiency and the welding quality are improved are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of liquefied gas tank production, in particular to a liquefied gas tank shield nameplate bending device. Background Art

[0002] In order to promote the information-based traceability management of liquefied gas tank filling, the legal liquefied gas tank's shield and valve need to be equipped with a QR code electronic tag, and the liquefied gas tank's shield will also be marked with a laser code. The unit that fills the liquefied gas tank can trace the source of the liquefied gas tank by scanning the QR code or laser code on the liquefied gas tank. At present, the QR code label is generally set on the liquefied gas tank's shield by printing the QR code label on the surface of the metal nameplate and then welding the metal nameplate to the shield.

[0003] When manually welding a metal nameplate with a QR code label on the protective cover, since the liquefied gas tank protective cover is curved, before welding the metal nameplate, it is necessary to manually press the flat metal nameplate against the protective cover to deform the metal nameplate into a shape with a certain curvature and fit the surface of the protective cover, and then operate the welding gun to weld. Pressing the metal nameplate to deform it requires a lot of physical strength, resulting in high labor intensity for the operator, and manual pressing makes it difficult to ensure that the metal nameplate fits completely with the protective cover. There is a gap between the metal nameplate and the protective cover after welding, which can easily cause poor welding. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a liquefied gas tank shield nameplate bending device, which solves the problem in the prior art that manually pressing a metal nameplate has high labor intensity and is prone to poor welding.

[0005] According to an embodiment of the present invention, a liquefied gas tank shield nameplate bending device includes a frame, the frame is provided with a material guide trough, a material drop port and a bending chamber connected in sequence, the frame is also provided with a storage chamber connected to the material guide trough and a movable push plate is provided in the storage chamber, the frame is provided with a first drive component connected to the push plate in a transmission manner, the first drive component drives the push plate to move in a direction close to the material guide trough; a movable feeding push plate is provided in the material guide trough and the frame is provided with a second drive component connected to the feeding push plate in a transmission manner, the second drive component drives the push plate to move close to or away from When the push plate is away from the blanking port and approaches the blanking port under the drive of the second driving component, it passes through the connection between the material guide trough and the material storage chamber; the frame is also provided with two movable driven rods and a third driving component which is respectively connected to the two driven rods, the two driven rods are respectively located on the opposite sides of the bending chamber, one of the driven rods is provided with a convex pressure head, and the other driven rod is provided with a concave pressure head which cooperates with the convex pressure head, the third driving component drives the two driven rods to approach or move away from each other, and when the two driven rods approach each other, the convex pressure head and the concave pressure head respectively extend into the bending chamber.

[0006] Compared with the prior art, the present invention has the following beneficial effects: by adopting the first driving component to drive the pushing plate to move in the direction close to the material guide groove, several nameplates arranged in a row in the storage cavity are pushed into the material guide groove in turn, and the feeding pushing plate is driven by the second driving component to reciprocate in the material guide groove and push the nameplates along the material guide groove through the blanking port in turn into the bending cavity, and the nameplates fall between the convex pressure head and the concave pressure head after entering the bending cavity, and then the third driving component drives the two driven rods to approach each other and squeeze the nameplate through the convex pressure head and the concave pressure head to deform the nameplate, so that the flat nameplate can be deformed into a shape with a certain curvature, thereby ensuring that the nameplate fits the shield when it is welded to the shield, and there is no need for manual pressing to deform the nameplate, which solves the technical problem that manual pressing of metal nameplates is labor-intensive and easy to cause poor welding, and produces the technical effect of reducing the labor intensity of operators welding metal nameplates on the shields, improving welding efficiency and welding quality, and the operation is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of a liquefied gas tank shield nameplate bending device according to an embodiment of the present invention;

[0008] Figure 2 It is a structural schematic diagram of a liquefied gas tank shield nameplate bending device from another perspective according to one embodiment of the present invention;

[0009] Figure 3 A cross-sectional view of a liquefied gas tank shield nameplate bending device according to an embodiment of the present invention;

[0010] Figure 4 A cross-sectional view of another cross section of the liquefied gas tank shield nameplate bending device according to an embodiment of the present invention;

[0011] Figure 5 The present invention is a schematic structural diagram of an installation frame in a liquefied gas tank shield nameplate bending device according to an embodiment of the present invention.

[0012] In the above drawings: 1. frame; 11. material guide trough; 12. material drop opening; 13. bending chamber; 14. material storage chamber; 15. material discharge opening; 16. guide rail; 2. material push plate; 21. guide rod; 3. first drive assembly; 31. drive block; 32. tension spring; 4. material feed push plate; 41. limit groove; 5. second drive assembly; 51. motor; 52. transmission rod; 53. limit pin; 6. mounting frame; 61. driven rod; 62. convex pressure head; 63. concave pressure head; 64. clamping block; 7. third drive assembly; 71. active rod; 72. sliding sleeve; 73. first connecting rod; 74. second connecting rod; 75. first oil cylinder; 76. first piston rod; 8. material baffle plate; 81. slider; 9. fourth drive assembly; 91. second oil cylinder; 92. second piston rod; 100. nameplate. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] like Figures 1 to 5 As shown, an embodiment of the present invention proposes a liquefied gas tank shield nameplate bending device for extruding a flat metal nameplate 100 to deform the nameplate 100 into a shape with a certain curvature, so that the nameplate 100 can fit with the surface of the shield when being welded on the liquefied gas tank shield.

[0015] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4The liquefied gas tank shield nameplate bending device includes a frame 1, on which a guide groove 11, a blanking port 12 and a bending cavity 13 are connected in sequence, wherein the width of the guide groove 11 is equal to or slightly greater than the thickness of the nameplate 100, the width of the blanking port 12 is consistent with the width of the guide groove 11 and the length of the blanking port 12 is equal to or slightly greater than the length of the nameplate 100, the width of the bending cavity 13 is greater than the width of the blanking port 12 and the length of the bending cavity 13 is consistent with the length of the blanking port 12; the frame 1 is also provided with a storage cavity 14 connected to the guide groove 11, and the storage cavity 14 is used The nameplates 100 to be bent are placed in a row in the storage cavity 14, a movable push plate 2 is provided in the storage cavity 14, and a first driving component 3 connected to the push plate 2 is provided on the frame 1, and the first driving component 3 drives the push plate 2 to move toward the guide groove 11, so that the nameplates 100 in the storage cavity 14 enter the guide groove 11 in sequence; a movable feeding push plate 4 is provided in the guide groove 11, and a second driving component 5 connected to the feeding push plate 4 is provided on the frame 1, and the second driving component 5 drives the push plate 2 to move toward the guide groove 11. Or away from the blanking port 12 and when the push plate 2 approaches the blanking port 12 under the drive of the second driving component 5, it passes through the connection between the guide groove 11 and the storage chamber 14, so that the nameplate 100 entering the guide groove 11 from the storage chamber 14 is pushed toward the blanking port 12 through the movement of the feeding push plate 4, and the nameplate 100 passes through the blanking port 12 into the bending chamber 13 in turn; the frame 1 is also provided with two movable driven rods 61 and a third driving component 7 respectively connected to the two driven rods 61, and the two driven rods 61 are respectively located at the opposite two sides of the bending chamber 13 On the side, one of the driven rods 61 is provided with a convex pressure head 62, and the other driven rod 61 is provided with a concave pressure head 63 cooperating with the convex pressure head 62, and the third driving component 7 drives the two driven rods 61 to approach or move away from each other and when the two driven rods 61 approach each other, the convex pressure head 62 and the concave pressure head 63 respectively extend into the bending cavity 13, and when the convex pressure head 62 and the concave pressure head 63 clamp the nameplate 100 in the bending cavity 13, the nameplate 100 will be deformed, so that the flat nameplate 100 becomes a shape with a certain arc and can fit with the protective cover of the liquefied gas tank.

[0016] Specifically, the working process of the liquefied gas tank shield nameplate bending device provided in this embodiment is: first, a plurality of nameplates 100 are arranged in a row and placed in the storage cavity 14, and the nameplates 100 in the storage cavity 14 are located between the push plate 2 and the guide hole, and the first drive component 3, the second drive component 5 and the third drive component 7 are started respectively, and the first drive component 3 drives the push plate 2 to move in the direction close to the guide groove 11 to push the nameplates 100 in the storage cavity 14 into the guide groove 11 in sequence, and the feeding push plate 4 is driven by the second drive component 5 to reciprocate in the guide groove 11 and push the nameplates 100 along the guide groove 11 through the blanking port 12 in sequence to enter the bending In the cavity 13, the nameplate 100 enters the bending cavity 13 and falls between the convex pressure head 62 and the concave pressure head 63, and then the third driving component 7 drives the two follower rods 61 to approach each other and squeeze the nameplate 100 through the convex pressure head 62 and the concave pressure head 63 to deform the nameplate 100, so that the flat nameplate 100 can be deformed into a shape with a certain curvature. After the bending is completed, the third driving component 7 drives the two follower rods 61 to move away from each other. At this time, the bent nameplate 100 can be taken out of the bending cavity 13, and then the first driving component 3 and the second driving component 5 continuously input the nameplate 100 into the bending cavity 13, so that multiple flat nameplates 100 can be continuously processed into a shape with a certain curvature. The liquefied gas tank shield nameplate bending device provided in this embodiment can automatically bend the flat nameplate 100 to ensure that the nameplate 100 can fit with the surface of the shield when welded to the shield. There is no need for manual pressing to deform the nameplate 100, which reduces the labor intensity of the operator in welding the metal nameplate 100 on the shield, improves welding efficiency and welding quality, and is simple to operate and easy to use.

[0017] like Figure 1 As shown, a guide rod 21 is provided on one side of the push plate 2 away from the guide groove 11, and the axial direction of the guide rod 21 is consistent with the moving direction of the push plate 2, and a guide hole matching the guide rod 21 is provided on the frame 1. The moving direction of the push plate 2 on the frame 1 is limited by the matching of the guide rod 21 and the guide hole, so as to prevent the push plate 2 from deviating from the preset direction when moving, and ensure that the nameplate 100 in the storage cavity 14 smoothly enters the guide groove 11 under the action of the push plate 2.

[0018] In this embodiment, the first driving assembly 3 includes a driving block 31 connected to the end of the guide rod 21 away from the push plate 2, a tension spring 32 is provided on the driving block 31, and the end of the tension spring 32 away from the driving block 31 cooperates with the frame 1, and the extension and contraction direction of the tension spring 32 is consistent with the moving direction of the push plate 2. The first driving assembly 3 includes the driving block 31 connected to the guide rod 21 and the tension spring 32 is arranged on the driving block 31. When the nameplate 100 is placed in the storage chamber 14, the driving block 31 is first pulled to make the pushing plate 2 away from the guide groove 11, and then the nameplate 100 is placed between the pushing plate 2 and the guide groove 11. At this time, the tension spring 32 is stretched. After the nameplate 100 is placed, the driving block 31 is released so that the pushing plate 2 abuts against the nameplate 100 under the action of the elastic force provided by the tension spring 32. As the nameplate 100 is pushed by the feeding push plate 4 in turn toward the direction close to the blanking port 12, the driving block 31 gradually approaches the guide groove 11 under the action of the elastic force provided by the tension spring 32, so as to push the nameplate 100 in the storage chamber 14 into the guide groove 11 in turn, thereby improving the stability of the nameplate bending device of the liquefied gas tank shield.

[0019] Please combine Figure 2 and Figure 3 The second driving assembly 5 includes a motor 51 and a transmission rod 52 disposed at the output end of the motor 51. A limit pin 53 is eccentrically disposed on the transmission rod 52. A limit groove 41 is disposed at one end of the feeding push plate 4 away from the blanking port 12. The limit pin 53 extends into the limit groove 41 and abuts against the inner wall of the limit groove 41. When the transmission rod 52 rotates under the drive of the motor 51, the limit pin 53 rotates around the output end of the motor 51 and drives the feeding push plate 4 to reciprocate in the guide groove 11 through the cooperation between the limit pin 53 and the limit groove 41, so that the nameplate 100 pushed into the guide groove 11 by the push plate 2 is pushed into the blanking port 12 and enters the bending chamber 13 in turn, ensuring that the nameplate bending device for the liquefied gas tank shield can continuously and automatically perform the bending operation of the nameplate 100.

[0020] like Figure 2 and Figure 5 As shown, the frame 1 is also provided with a mounting frame 6, on which two guide grooves are arranged at intervals, and the two driven rods 61 are respectively arranged in the guide grooves in a one-to-one correspondence. The mounting frame 6 arranged on the frame 1 is used for installing the driven rods 61, and the driven rods 61 are respectively installed in the corresponding guide grooves to prevent the unintended deviation of the driven rods 61 when they move, resulting in the misalignment of the convex pressure head 62 and the concave pressure head 63, which is beneficial to improve the reliability of the liquefied gas tank shield nameplate bending device.

[0021] In detail, the third driving assembly 7 includes an active rod 71 movably arranged on the mounting frame 6, the active rod 71 is parallel to the driven rod 61 and the moving direction of the active rod 71 is perpendicular to the moving direction of the driven rod 61, the opposite ends of the active rod 71 are respectively sleeved with movable sliding sleeves 72 and the opposite sides of the sliding sleeve 72 are respectively rotatably connected with a first connecting rod 73 and a second connecting rod 74, the end of the first connecting rod 73 away from the sliding sleeve 72 is rotatably connected to the mounting frame 6, and the end of the second connecting rod 74 away from the sliding sleeve 72 is rotatably connected to the driven rod 61 in a one-to-one manner. The third driving assembly 7 is used to drive the active rod 71 to move on the installation frame 6. When the active rod 71 approaches the driven rod 61 under the drive of the third driving assembly 7, as the active rod 71 moves, the first connecting rod 73 rotates relative to the installation frame 6 and pushes the sliding sleeve 72 to slide on the active rod 71 so that the two sliding sleeves 72 are close to each other. As the sliding sleeve 72 moves, the second connecting rod 74 rotates and drives the driven rod 61 to move on the installation frame 6 so that the two driven rods 61 are close to each other. At this time, the convex pressure head 62 and the concave pressure head 63 move in the bending cavity 13 respectively and squeeze the The nameplate 100 in the bending cavity 13 is deformed; when the active rod 71 moves away from the driven rod 61 under the drive of the third driving component 7, as the active rod 71 moves, the first connecting rod 73 rotates relative to the mounting frame 6 and pulls the sliding sleeve 72 to slide on the active rod 71 so that the two sliding sleeves 72 move away from each other. As the sliding sleeve 72 moves, the second connecting rod 74 rotates and drives the driven rod 61 to move on the mounting frame 6 so that the two driven rods 61 move away from each other. At this time, the convex pressing head 62 and the concave pressing head 63 move respectively in the bending cavity 13 and away from the processed nameplate 100. The third driving assembly 7 drives the active rod 71 to move and drives the two driven rods 61 to move synchronously, which can improve the movement stability of the driven rod 61 while ensuring that the convex pressing head 62 and the concave pressing head 63 clamp the nameplate 100 to be processed and deform the nameplate 100, thereby avoiding the insufficient pressure exerted by the convex pressing head 62 and the concave pressing head 63 on the nameplate 100, resulting in the nameplate 100 not bending properly.

[0022] Please refer to Figure 3 and Figure 5The third driving assembly 7 further includes a first oil cylinder 75 disposed on the mounting frame 6 and a first piston rod 76 disposed at the output end of the first oil cylinder 75, and the first piston rod 76 cooperates with the active rod 71. The first oil cylinder 75 drives the first piston rod 76 to extend or retract into the first oil cylinder 75, so as to drive the active rod 71 to move on the mounting rod and drive the driven rod 61 to move, and when the first piston rod 76 extends out of the first oil cylinder 75, the active rod 71 approaches the driven rod 61, and at this time, the two driven rods 61 approach each other, and when the first piston rod 76 retracts into the first oil cylinder 75, the active rod 71 moves away from the driven rod 61, and at this time, the two driven rods 61 move away from each other, so as to conveniently control the convex pressure head 62 and the concave pressure head 63 to move in the bending chamber 13.

[0023] like Figure 5 As shown, the convex pressure head 62 and the concave pressure head 63 are respectively provided with a clamping block 64 , and the driven rod 61 is respectively provided with a dovetail groove matched with the clamping block 64 . The convex pressure head 62 and the concave pressure head 63 are respectively installed on the driven rod 61 through the cooperation of the clamping block 64 and the dovetail groove, ensuring a firm cooperation between the convex pressure head 62 and the concave pressure head 63 and the corresponding driven rod 61, preventing the convex pressure head 62 or the concave pressure head 63 from falling off the driven rod 61 during the process of squeezing the nameplate 100, and the convex pressure head 62 or the concave pressure head 63 can be easily removed from the corresponding driven rod 61 by pulling the clamping block 64 out of the dovetail groove, so as to facilitate the replacement of the convex pressure head 62 and the concave pressure head 63 of different shapes, so that the liquefied gas tank shield nameplate bending device can process nameplates 100 of various shapes to meet the production requirements of products of different specifications, which is beneficial to improving the versatility of the liquefied gas tank shield nameplate bending device.

[0024] like Figure 2 and Figure 3As shown, the frame 1 is also provided with a discharge port 15 connected to the bending chamber 13, a movable baffle plate 8 is provided in the discharge port 15, and the frame 1 is provided with a fourth drive component 9 which is transmission-connected to the baffle plate 8, and the fourth drive component 9 drives the baffle plate 8 to approach or move away from the bending chamber 13. The discharge port 15 is used to allow the nameplate 100 processed in the bending cavity 13 to be discharged from the bending cavity 13. When the nameplate 100 enters the bending cavity 13, the baffle plate 8 is driven by the fourth driving component 9 to approach the bending cavity 13 and move to the bottom of the blanking port 12, so that the nameplate 100 can remain in the bending cavity 13 after passing through the blanking port 12 and entering the bending cavity 13. After the nameplate 100 is processed, the fourth driving component 9 drives the baffle plate 8 to move away from the bending cavity 13. At this time, the nameplate 100 passes through the discharge port 15 and is discharged from the bending cavity 13 under the action of gravity, so as to collect the processed nameplate 100 and facilitate subsequent welding processing. After the nameplate 100 in the bending cavity 13 is discharged, the fourth driving component 9 drives the baffle plate 8 to move to the bottom of the blanking port 12, so that the liquefied gas tank shield nameplate bending device can operate continuously and stably.

[0025] Specifically, the frame 1 is provided with a guide rail 16, the length direction of the guide rail 16 is consistent with the moving direction of the baffle plate 8, and the baffle plate 8 is provided with a slider 81 that cooperates with the guide rail 16. The guide rail 16 provided on the frame 1 cooperates with the slider 81 on the baffle plate 8 to guide the baffle plate 8 to move on the frame 1, so as to prevent the baffle plate 8 from deviating from the preset direction when moving, so that the baffle plate 8 cannot close the bending cavity 13, and the friction between the baffle plate 8 and the frame 1 can be reduced by the cooperation of the slider 81 and the guide rail 16, so as to improve the stability of the baffle plate 8 when moving.

[0026] Please refer to Figure 3In this embodiment, the fourth driving assembly 9 includes a second oil cylinder 91 disposed on the frame 1 and a second piston rod 92 disposed at the output end of the second oil cylinder 91, and the second piston rod 92 cooperates with the slider 81. The second oil cylinder drives the second piston rod 92 to extend or retract into the second oil cylinder 91 to drive the baffle plate 8 to move on the frame 1, and when the second piston rod 92 extends out of the second oil cylinder 91, the baffle plate 8 approaches the bending chamber 13, and at this time, the baffle plate 8 moves to the right below the blanking port 12 to close the bending chamber 13, and when the second piston rod 92 retracts into the second oil cylinder 91, the baffle plate 8 moves away from the bending chamber 13, and at this time, the bottom of the bending chamber 13 is opened so that the nameplate 100 in the bending chamber 13 can fall out of the bending chamber 13, so that the nameplate 100 processed in the bending chamber 13 can be easily taken out.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A liquefied gas tank shield nameplate bending device, characterized in that: The machine comprises a frame, a material guide trough, a material drop opening and a bending chamber which are connected in sequence are arranged on the frame, a material storage chamber which is connected to the material guide trough and a movable material push plate is arranged in the material storage chamber, a first driving assembly which is transmission-connected with the material push plate is arranged on the frame, and the first driving assembly drives the material push plate to move in a direction close to the material guide trough; a movable material feed push plate is arranged in the material guide trough and a second driving assembly which is transmission-connected with the material feed push plate is arranged on the frame, the second driving assembly drives the material push plate to approach or move away from the material drop opening and the material push plate moves in the second driving assembly When driven by the driving component, it passes through the connection between the material guide trough and the material storage chamber when it approaches the blanking port; the frame is also provided with two movable driven rods and a third driving component which is respectively connected to the two driven rods, the two driven rods are respectively located on the opposite sides of the bending chamber, one of the driven rods is provided with a convex pressure head, and the other driven rod is provided with a concave pressure head which cooperates with the convex pressure head, the third driving component drives the two driven rods to approach or move away from each other, and when the two driven rods approach each other, the convex pressure head and the concave pressure head respectively extend into the bending chamber.

2. A liquefied gas tank shield nameplate bending device as claimed in claim 1, characterized in that: A guide rod is provided on one side of the push plate away from the material guide groove, and the axial direction of the guide rod is consistent with the moving direction of the push plate. A guide hole matching with the guide rod is provided on the frame.

3. A liquefied gas tank shield nameplate bending device as claimed in claim 2, characterized in that: The first driving assembly includes a driving block connected to one end of the guide rod away from the push plate, a tension spring is provided on the driving block and one end of the tension spring away from the driving block cooperates with the frame, and the extension direction of the tension spring is consistent with the moving direction of the push plate.

4. A liquefied gas tank shield nameplate bending device as claimed in claim 1, characterized in that: The second driving assembly includes a motor and a transmission rod arranged at the output end of the motor, a limit pin is eccentrically arranged on the transmission rod, a limit groove is arranged at one end of the feeding push plate away from the blanking port, and the limit pin extends into the limit groove and abuts against the inner wall of the limit groove.

5. A liquefied gas tank shield nameplate bending device as claimed in claim 1, characterized in that: The frame is also provided with a mounting frame, the mounting frame is provided with two guide grooves at intervals, and the two driven rods are respectively arranged in the guide grooves in a one-to-one correspondence.

6. A liquefied gas tank shield nameplate bending device as claimed in claim 5, characterized in that: The third driving assembly includes an active rod movably arranged on the mounting frame, the active rod is parallel to the driven rod and the moving direction of the active rod is perpendicular to the moving direction of the driven rod, the opposite ends of the active rod are respectively sleeved with movable sliding sleeves and the opposite sides of the sliding sleeve are respectively rotatably connected with a first connecting rod and a second connecting rod, one end of the first connecting rod away from the sliding sleeve is rotatably connected to the mounting frame, and one end of the second connecting rod away from the sliding sleeve is rotatably connected to the driven rod in a one-to-one correspondence.

7. A liquefied gas tank shield nameplate bending device as claimed in claim 6, characterized in that: The third driving assembly further comprises a first oil cylinder arranged on the mounting frame and a first piston rod arranged at an output end of the first oil cylinder, wherein the first piston rod cooperates with the active rod.

8. A liquefied gas tank shield nameplate bending device as claimed in claim 1, characterized in that: The frame is also provided with a discharge port connected to the bending chamber, a movable baffle plate is provided in the discharge port, and the frame is provided with a fourth drive assembly transmission-connected to the baffle plate, the fourth drive assembly drives the baffle plate to approach or move away from the bending chamber.

9. A liquefied gas tank shield nameplate bending device as claimed in claim 8, characterized in that: The frame is provided with a guide rail, the length direction of the guide rail is consistent with the moving direction of the baffle plate, and the baffle plate is provided with a sliding block matched with the guide rail.

10. A liquefied gas tank shield nameplate bending device as claimed in claim 9, characterized in that: The fourth driving assembly includes a second oil cylinder arranged on the frame and a second piston rod arranged at the output end of the second oil cylinder, and the second piston rod cooperates with the sliding block.

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