Frame type high-pressure hydraulic machine for plate profiling

Abstract

The high-pressure hydraulic machine comprises a hydraulic machine body, a bearing rack is arranged on the top face of the hydraulic machine body, and a supporting arm mechanism is fixedly assembled on the side face of the hydraulic machine body. The transverse supporting arm and the fixed longitudinal arm are fixed to the side of the hydraulic machine body, and the fixed longitudinal arm, the electric hydraulic push rod mechanism, the restraining and supporting platform plate and other structures are supported, so that the electric hydraulic push rod mechanism drives the plate restraining rotating roller mechanism to move transversely; the steerable plate restraining roller mechanism can be located at the side edge of a machined plate, so that a plate workpiece placed in the machined plate is laterally restrained, the position of the plate workpiece is located in the middle, the situation that the plate deflects and is disengaged is avoided, the plate restraining roller mechanism is greatly convenient to adapt to the working conditions that the plate structure is long, and continuous pushing is needed for section-by-section pressing forming, and the machining efficiency is greatly improved. The centering and stability of the plate workpiece are guaranteed, the machining stability is improved, and the forming machining efficiency is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic equipment, and in particular to a high-pressure hydraulic press for frame-type plate forming. Background Art

[0002] High-pressure hydraulic press is a machine that uses the static pressure of liquid to process metal, plastic, rubber, wood, powder and other products. High-pressure hydraulic press is often used in pressing and forming processes, such as forging, stamping, cold extrusion, straightening, bending, flanging, sheet metal drawing, powder metallurgy, pressing, etc. The working principle of high-pressure hydraulic press is to use Pascal's law, that is, in a closed container, the liquid pressure can be transmitted to the entire liquid, and its value remains unchanged, thereby realizing the amplification and transmission of force. The frame-type high-pressure hydraulic press has a sturdy frame structure and is composed of a fixed upper crossbeam and a movable lower workbench. The hydraulic press for plate forming needs to generate high-pressure oil generated by the hydraulic system of the hydraulic press, which is transmitted to the mechanical structure through a hydraulic cylinder or a hydraulic motor to generate huge pressure to form the plate. The materials for plate processing can include metal, plastic and other materials. The frame-type high-pressure hydraulic press can better form the plate structure.

[0003] In the process of forming the plate structure by the existing frame-type high-pressure hydraulic press, the plate is often prone to deflection and dislocation due to the lack of position constraint structure when the plate workpiece is placed between the crossbeam and the lower worktable. Especially in the working condition where the plate structure is long and needs to be continuously pushed forward to be pressed and formed in sections, it is difficult to stably keep the plate workpiece centered and stable, which is not conducive to improving the processing stability and forming efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a frame-type high-pressure hydraulic press for plate forming, which solves the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The cam body is provided with a support arm mechanism, and the cam body is fixedly equipped with an electric hydraulic push rod mechanism and a lateral constraint sleeve frame, and the other end of the lateral constraint sleeve frame and the output end of the electric hydraulic push rod mechanism are fixedly installed with a constraint support platform plate. The end of the other side of the constraint support platform plate is fixedly installed with a damping oil and gas fork inner tube portion, the surface of the damping oil and gas fork inner tube portion is sleeved with a damping oil and gas fork sleeve portion, and the surface of the damping oil and gas fork inner tube portion and the damping oil and gas fork sleeve portion are sleeved with a superimposed damping spring, and the end of the damping oil and gas fork sleeve portion away from the superimposed damping spring is fixedly connected with a plate constraint bending shaft, and the other end of the plate constraint bending shaft is sleeved with a bearing, and the plate constraint bending shaft is rotatably sleeved with a covering mechanism through the bearing, and the other end face of the covering mechanism is fixedly connected with a plate constraint roller mechanism.

[0007] Preferably, the plate constraining roller mechanism includes a constraining rigid shaft, a contact roller sleeve and a limiting concave arc platform, the contact roller sleeve and the limiting concave arc platform are fixedly sleeved on the end of the constraining rigid shaft, and the two ends of the contact roller sleeve respectively overlap with the end surface of the limiting concave arc platform and are fixedly connected.

[0008] Preferably, the contact roller sleeve is a round roller sleeve-shaped structure, the limiting concave arc platform is a truncated cone-shaped structure with a side annular depression, and one end of the limiting concave arc platform close to the contact roller sleeve is smaller than the other end surface thereof.

[0009] Preferably, columns are fixedly installed at the four corners of the hydraulic press body, a top crossbeam is provided at the top of the column, a hydraulic system is provided in the middle of the top crossbeam, a movable working crossbeam slidably connected to the column is installed at the bottom of the output end of the hydraulic system, and a covering beam plate is fixedly installed in the middle of the bottom surface of the movable working crossbeam.

[0010] Preferably, the hydraulic press body includes a support base, a bottom cross beam and an installation angle bracket, the bottom cross beam is fixedly installed on the top of the support base, and the installation angle bracket is fixedly installed on the four corners of the bottom of the support base; the bearing platform includes a workpiece carrier and a carrier reinforcing angle plate, the carrier reinforcing angle plate is fixedly installed on the front and rear sides of the bottom surface of the workpiece carrier, and the workpiece carrier and the carrier reinforcing angle plate are respectively fixed on the top surface and side surface of the bottom cross beam.

[0011] Preferably, the support arm mechanism comprises a transverse support arm and a fixed longitudinal arm, two ends of the transverse support arm are fixedly connected to the bottom cross beam and the fixed longitudinal arm respectively, and one end of the transverse restraining sleeve rack is fixedly connected to the fixed longitudinal arm.

[0012] Preferably, the transverse support arm includes a main arm frame, an arm end plate and assembly bolts, the arm end plate is welded and fixedly installed on the two end portions of the main arm frame, and the arm end plate is assembled and fixed to the bottom cross beam or the fixed longitudinal arm by assembly bolts; the fixed longitudinal arm includes a longitudinal arm beam tube, a longitudinal arm bevel tube and a longitudinal platform plate, the two ends of the longitudinal arm bevel tube are respectively fixedly connected to the longitudinal arm beam tube, the ends of the longitudinal arm beam tube and the longitudinal arm bevel tube are fixedly connected to the longitudinal platform plate, and the longitudinal arm beam tube is assembled and connected to the arm end plate.

[0013] Preferably, the transverse constraint sleeve rack includes a constraint liner, a constraint sleeve and a stabilizing ring, the constraint liner is slidably sleeved in the constraint sleeve, the stabilizing ring is fixedly installed at one end of the constraint liner that is inside the constraint sleeve, and the stabilizing ring is a protruding circular ring structure, and the end of the constraint sleeve is fixedly connected to the top and bottom ends of the longitudinal platform plate; the electric hydraulic push rod mechanism includes an electric hydraulic cylinder and a piston telescopic push rod, the piston telescopic push rod is arranged inside the electric hydraulic cylinder, and the electric hydraulic cylinder is fixedly connected to the middle part of the longitudinal platform plate.

[0014] Preferably, the inner tube portion of the shock-absorbing oil-gas fork includes an inner tube shell of the oil-gas fork and a first oil-gas fork end cover, and one end of the inner tube shell of the oil-gas fork is fixedly connected to the first oil-gas fork end cover; the sleeve portion of the shock-absorbing oil-gas fork includes an outer tube shell of the oil-gas fork and a second oil-gas fork end cover, and the end of the outer tube shell of the oil-gas fork and the second oil-gas fork end cover are fixedly connected, and the outer tube shell of the oil-gas fork is sleeved on the end of the inner tube shell of the oil-gas fork, and the two ends of the laminated shock-absorbing spring are respectively fixedly connected to the first oil-gas fork end cover and the second oil-gas fork end cover, and the inner ring of the laminated shock-absorbing spring does not contact the surface of the outer tube shell of the oil-gas fork, and the end of the plate constraining the bending axis is fixedly connected to the end of the outer tube shell of the oil-gas fork.

[0015] Preferably, the covering mechanism includes a covering end cover and a covering ring tube, the covering ring tube is fixedly installed on the edge of the covering end cover close to one end face of the bearing, and the end face of the covering end cover away from the bearing is fixedly connected to the limiting concave arc platform and the constrained rigid shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This kind of frame-type high-pressure hydraulic press for plate forming is fixed on the side of the hydraulic press body by arranging a transverse support arm and a fixed longitudinal arm, and provides support for the fixed longitudinal arm, the electric hydraulic push rod mechanism and the constraint support platform plate and other structures, so that the electric hydraulic push rod mechanism drives the plate constraint roller mechanism to move horizontally, and the steerable plate constraint roller mechanism can be placed at the side edge of the processed plate, so as to laterally constrain the plate workpiece placed in the process and make its position centered, thereby avoiding the situation that the plate deflects and moves out, which greatly facilitates the working conditions where the plate structure is long and needs to be continuously pushed forward to be pressed and formed in sections, ensures the centering and stability of the plate workpiece, is conducive to improving the processing stability, and also improves the efficiency of the forming process.

[0018] 2. This frame-type high-pressure hydraulic press for plate profiling, by setting a steerable plate restraining roller mechanism as a restraining structure for processing the plate, can provide better lateral contact for the plate during continuous advancement and step-by-step pushing processing. Because the rotatable plate restraining roller mechanism can avoid sliding friction of the plate, thereby avoiding the inconvenience caused by increased resistance, it also ensures the stability and continuity of step-by-step processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional view of the structure of the present invention;

[0020] Figure 2 It is a stereoscopic view of the transverse support arm and the fixed longitudinal arm of the present invention;

[0021] Figure 3 It is an enlarged stereoscopic view of a part of the structure of the present invention;

[0022] Figure 4 It is a dissected stereoscopic view of the transversely restrained casing rack of the present invention;

[0023] Figure 5 It is a three-dimensional view of the local structure of the present invention;

[0024] Figure 6 It is a three-dimensional view of another partial structure of the present invention;

[0025] Figure 7 This is a dissected stereoscopic view of the plate member restraining roller mechanism of the present invention.

[0026] In the figure: 1. Hydraulic press body; 2. Carrying platform; 3. Column; 4. Top crossbeam; 5. Hydraulic system; 6. Movable working crossbeam; 7. Covering beam plate; 8. Cross arm; 9. Fixed longitudinal arm; 10. Electric hydraulic push rod mechanism; 11. Lateral restraint casing rack; 12. Restraint support platform plate; 13. Shock-absorbing oil and gas fork inner tube; 14. Shock-absorbing oil and gas fork casing; 15. Composite shock-absorbing spring; 16. Plate restraint bending axis; 17. Bearing; 18. Covering mechanism; 19. Restraint rigid axis; 20. Limiting concave arc platform; 21. Contact roller sleeve;

[0027] 101. Supporting machine base; 102. Bottom cross beam; 103. Mounting angle bracket; 201. Workpiece carrier plate; 202. Carrier plate strengthening angle plate; 801. Main arm frame; 802. Support arm end plate; 803. Assembly bolts; 901. Longitudinal arm beam tube; 902. Longitudinal arm oblique edge tube; 903. Longitudinal platform plate; 1001. Electric hydraulic cylinder; 1002. Piston telescopic push rod; 1101. Constraint liner; 1102. Constraint sleeve; 1103. Stabilizing ring; 1301. Oil and gas fork inner tube shell; 1302. First oil and gas fork end cover; 1401. Oil and gas fork outer tube shell; 1402. Second oil and gas fork end cover; 1801. Covering end cover; 1802. Covering ring tube. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0029] Example: Refer to Figure 1-7A frame-type high-pressure hydraulic press for plate forming includes a hydraulic press body 1, a bearing platform 2 is provided on the top surface of the hydraulic press body 1, a support arm mechanism is fixedly installed on the side of the hydraulic press body 1, an electric hydraulic push rod mechanism 10 and a lateral restraining sleeve frame 11 are fixedly installed on the middle and end of the support arm mechanism near the side of the hydraulic press body 1, a restraining support platform plate 12 is fixedly installed on the other end of the lateral restraining sleeve frame 11 and the output end of the electric hydraulic push rod mechanism 10, and a damping oil and gas are fixedly installed on the end of the other side of the restraining support platform plate 12 The inner tube portion 13 of the fork has a shock-absorbing oil-gas fork sleeve portion 14 on its surface, and the surfaces of the inner tube portion 13 of the shock-absorbing oil-gas fork and the shock-absorbing oil-gas fork sleeve portion 14 are sleeved with a superimposed shock-absorbing spring 15. One end of the shock-absorbing oil-gas fork sleeve portion 14 away from the superimposed shock-absorbing spring 15 is fixedly connected to a plate-constrained bending axis 16, and the other end of the plate-constrained bending axis 16 is sleeved with a bearing 17. The plate-constrained bending axis 16 is rotatably sleeved with a covering mechanism 18 through the bearing 17, and the other end face of the covering mechanism 18 is fixedly connected to a plate-constrained roller mechanism.

[0030] In the present invention, the plate constraining roller mechanism comprises a constraining rigid shaft 19, a contact roller sleeve 21 and a position-limiting concave arc platform 20. The contact roller sleeve 21 and the position-limiting concave arc platform 20 are fixedly sleeved on the end of the constraining rigid shaft 19. The two ends of the contact roller sleeve 21 overlap with the end surface of the position-limiting concave arc platform 20 and are fixedly connected.

[0031] More specifically, by arranging the two ends of the contact roller sleeve 21 to overlap and be fixedly connected with the end faces of the limiting concave arc platform 20 respectively, and fixing the whole on the surface of the constrained rigid shaft 19, the overall strength of the structure is excellent, and the overlap and continuity of the roller surface also ensure that the plate is not easily stuck after contact.

[0032] In the present invention, the contact roller sleeve 21 is a round roller sleeve structure, the limiting concave arc platform 20 is a truncated cone structure with a sideways annular depression, and the end of the limiting concave arc platform 20 close to the contact roller sleeve 21 is smaller than the other end surface thereof;

[0033] More specifically, by setting the limiting concave arc platform 20 as a truncated cone-shaped structure with a side annular depression, it is located outside the side edge of the plate and in contact with it, thereby avoiding the jamming of the side edge of the plate and better promoting the advancement of the plate.

[0034] In the present invention, columns 3 are fixedly arranged at the four corners of the hydraulic press body 1, a top crossbeam 4 is arranged at the top of the column 3, a hydraulic system 5 is arranged in the middle of the top crossbeam 4, a movable working crossbeam 6 slidably sleeved on the column 3 is installed at the bottom of the output end of the hydraulic system 5, and a covering beam plate 7 is fixedly installed in the middle of the bottom surface of the movable working crossbeam 6;

[0035] More specifically, a covering beam plate 7 is provided so that it can be driven and controlled by the hydraulic system 5 at the bottom of the movable working cross beam 6 to realize longitudinal movement, that is, to realize the forming processing operation process.

[0036] In the present invention, the hydraulic press body 1 includes a support base 101, a bottom cross beam 102 and an installation angle bracket 103, the bottom cross beam 102 is fixedly installed on the top of the support base 101, and the installation angle bracket 103 is fixedly installed at the four corners of the bottom of the support base 101; the bearing platform 2 includes a workpiece carrier plate 201 and a carrier plate strengthening angle plate 202, the carrier plate strengthening angle plate 202 is fixedly installed on the front side and the rear side of the bottom surface of the workpiece carrier plate 201, and the workpiece carrier plate 201 and the carrier plate strengthening angle plate 202 are respectively fixed on the top surface and the side surface of the bottom cross beam 102;

[0037] More specifically, by providing a carrier reinforcing angle plate 202 fixedly installed on the front and rear sides of the bottom surface of the workpiece carrier 201, the front and rear sides of the workpiece carrier 201 are reinforced, thereby avoiding deformation of the front and rear sides of the workpiece carrier 201 structure and maintaining the stability of the structure.

[0038] In the present invention, the arm mechanism includes a transverse arm 8 and a fixed longitudinal arm 9, the two ends of the transverse arm 8 are fixedly connected to the bottom cross beam 102 and the fixed longitudinal arm 9 respectively, and one end of the transverse restraining casing frame 11 is fixedly connected to the fixed longitudinal arm 9;

[0039] More specifically, the two ends of the transverse support arm 8 are respectively fixedly connected to the bottom cross beam 102 and the fixed longitudinal arm 9, providing a stable lateral support for the fixed longitudinal arm 9 structure, making the entire device integrated and avoiding the inconvenience caused by a separate support structure.

[0040] In the present invention, the transverse support arm 8 includes a main arm frame 801, an arm end plate 802 and an assembly bolt 803. The arm end plate 802 is welded and fixedly installed on the two ends of the main arm frame 801. The arm end plate 802 is assembled and fixed with the bottom cross beam 102 or the fixed longitudinal arm 9 by the assembly bolt 803; the fixed longitudinal arm 9 includes a longitudinal arm beam tube 901, a longitudinal arm oblique edge tube 902 and a longitudinal platform plate 903. The two ends of the longitudinal arm oblique edge tube 902 are respectively fixedly connected with the longitudinal arm beam tube 901, the ends of the longitudinal arm beam tube 901 and the longitudinal arm oblique edge tube 902 are fixedly connected with the longitudinal platform plate 903, and the longitudinal arm beam tube 901 is assembled and connected with the arm end plate 802;

[0041] More specifically, by setting the two ends of the longitudinal arm bevel tube 902 to be fixedly connected to the longitudinal arm beam tube 901 respectively, and then fixedly connected to the longitudinal platform plate 903 at the side end, the entire fixed longitudinal arm 9 structure has multiple triangular structures, thereby improving the strength and stress resistance of the structure.

[0042] In the present invention, the transverse constraint casing rack 11 includes a constraint liner 1101, a constraint casing 1102 and a stabilizing ring 1103. The constraint liner 1101 is slidably sleeved in the constraint casing 1102. The stabilizing ring 1103 is fixedly installed at one end of the constraint liner 1101 inside the constraint casing 1102, and the stabilizing ring 1103 is a protruding annular structure. The end of the constraint casing 1102 is fixedly connected to the top and bottom ends of the longitudinal platform plate 903. The electric hydraulic push rod mechanism 10 includes an electric hydraulic cylinder 1001 and a piston telescopic push rod 1002. The piston telescopic push rod 1002 is arranged inside the electric hydraulic cylinder 1001, and the electric hydraulic cylinder 1001 is fixedly connected to the middle of the longitudinal platform plate 903.

[0043] More specifically, by providing a stabilizing ring 1103 fixedly installed on one end of the constraint liner 1101 inside the constraint sleeve 1102, the stabilizing ring 1103 with a raised surface can better maintain the stability of the constraint liner 1101 and the constraint sleeve 1102, avoid jamming when the constraint liner 1101 and the constraint sleeve 1102 are pushed toward each other, and make the sliding process of the constraint liner 1101 and the constraint sleeve 1102 toward each other smoother.

[0044] In the present invention, the damping oil-gas fork inner tube portion 13 includes an oil-gas fork inner tube shell 1301 and a first oil-gas fork end cover 1302, and one end of the oil-gas fork inner tube shell 1301 is fixedly connected to the first oil-gas fork end cover 1302; the damping oil-gas fork sleeve portion 14 includes an oil-gas fork outer tube shell 1401 and a second oil-gas fork end cover 1402, and the end of the oil-gas fork outer tube shell 1401 and the second oil-gas fork end cover 1402 are fixedly connected, and the oil-gas fork outer tube shell 1401 is sleeved on the end of the oil-gas fork inner tube shell 1301, and the two ends of the laminated damping spring 15 are respectively fixedly connected to the first oil-gas fork end cover 1302 and the second oil-gas fork end cover 1402, and the inner circle of the laminated damping spring 15 does not contact the surface of the oil-gas fork outer tube shell 1401, and the end of the plate constrained bending axis 16 is fixedly connected to the end of the oil-gas fork outer tube shell 1401;

[0045] More specifically, by arranging the two ends of the overlapping shock-absorbing spring 15 to be fixedly connected to the first oil-gas fork end cover 1302 and the second oil-gas fork end cover 1402 respectively, the shock-absorbing effects of the shock-absorbing oil-gas fork inner tube portion 13 and the shock-absorbing oil-gas fork sleeve portion 14 are enhanced, thereby improving the shock-absorbing efficiency in dealing with the lateral touch force generated by the plate during the forming process.

[0046] In the present invention, the sheathing mechanism 18 includes a sheathing end cover 1801 and a sheathing ring tube 1802. The sheathing ring tube 1802 is fixedly mounted on the edge of one end face of the sheathing end cover 1801 close to the bearing 17. One end face of the sheathing end cover 1801 away from the bearing 17 is fixedly connected to the limiting concave arc platform 20 and the constraining rigid shaft 19.

[0047] More specifically, by providing the sheathing ring tube 1802 fixedly installed on the edge of one end surface of the sheathing end cover 1801 close to the bearing 17, not only a certain isolation and protection is provided for the bearing 17, but also the inconvenience of cleaning and maintenance caused by the protrusion of the external structure is avoided.

[0048] When in use: during the forming process of the plate, the lateral position of the plate constraining roller mechanism composed of the constraining rigid shaft 19, the limiting concave arc platform 20 and the contact roller sleeve 21 is adjusted, that is, the electric hydraulic push rod mechanism 10 is started, so that the electric hydraulic push rod mechanism 10 drives its output end structure to push or contract, which can drive the constraining support platform plate 12 to move laterally, and then the lateral constraint sleeve frame 11 is extended or contracted, and the stability of the lateral movement of the constraining support platform plate 12 is promoted; and the lateral movement position of the constraining support platform plate 12 can drive the inner tube part 13 of the damping oil and gas fork, the sleeve part 14 of the damping oil and gas fork, the superimposed damping spring 15 and the plate constraining bending shaft 16 to move laterally, that is, drive the bearing 17, the covering mechanism 18 and the plate constraining roller mechanism to move laterally, so that the plate constraining roller mechanism moves to the position within the width of the plate to be processed, so that the plate constraining roller mechanism can provide lateral position constraints for the processed plate, so that the position placed behind the bearing stand 2 is constrained during the forming process of the plate;

[0049] When the plate is pushed, the plate constraint roller mechanism can realize the rotation with the plate constraint bending axis 16 through the connection with the bearing 17; when the plate constraint roller mechanism receives the lateral contact force of the plate, it can realize buffering through the energy absorption of the shock-absorbing oil-gas fork inner tube 13, the shock-absorbing oil-gas fork sleeve part 14 and the laminated shock-absorbing spring 15 to avoid jamming and structural damage.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A frame-type high-pressure hydraulic press for plate forming, comprising a hydraulic press body (1), characterized in that: The top surface of the hydraulic press body (1) is provided with a bearing platform (2), and the side of the hydraulic press body (1) is fixedly equipped with a support arm mechanism, and the middle and end portions of the support arm mechanism close to the side of the hydraulic press body (1) are respectively fixedly installed with an electric hydraulic push rod mechanism (10) and a transverse restraining sleeve rack (11), and the other end of the transverse restraining sleeve rack (11) and the output end of the electric hydraulic push rod mechanism (10) are fixedly installed with a restraining support platform plate (12), and the end portion of the other side of the restraining support platform plate (12) is fixedly installed with a damping oil-gas fork inner tube portion (13), and the damping oil-gas fork inner tube portion The surface of (13) is sleeved with a damping oil-gas fork sleeve portion (14), and the surfaces of the damping oil-gas fork inner tube portion (13) and the damping oil-gas fork sleeve portion (14) are sleeved with a superimposed damping spring (15). One end of the damping oil-gas fork sleeve portion (14) away from the superimposed damping spring (15) is fixedly connected with a plate-constrained bending axis (16), and the other end of the plate-constrained bending axis (16) is sleeved with a bearing (17). The plate-constrained bending axis (16) is rotatably sleeved with a covering mechanism (18) through the bearing (17), and the other end face of the covering mechanism (18) is fixedly connected with a plate-constrained roller mechanism.

2. A frame type high pressure hydraulic press for plate forming according to claim 1, characterized in that: The plate-constrained roller mechanism comprises a constrained rigid shaft (19), a contact roller sleeve (21) and a position-limiting concave arc platform (20); the contact roller sleeve (21) and the position-limiting concave arc platform (20) are fixedly sleeved on the end of the constrained rigid shaft (19); and the two ends of the contact roller sleeve (21) respectively overlap with the end surface of the position-limiting concave arc platform (20) and are fixedly connected.

3. A frame type high pressure hydraulic press for plate forming according to claim 1, characterized in that: The contact roller sleeve (21) is a round roller sleeve-shaped structure, the limiting concave arc platform (20) is a truncated cone-shaped structure with a sideways annular depression, and one end of the limiting concave arc platform (20) close to the contact roller sleeve (21) is smaller than the other end surface thereof.

4. A high pressure hydraulic press for frame type plate forming according to claim 1, characterized in that: The four corners of the hydraulic press body (1) are fixedly provided with columns (3), the top of the columns (3) is provided with a top crossbeam (4), the middle of the top crossbeam (4) is provided with a hydraulic system (5), the bottom of the output end of the hydraulic system (5) is provided with a movable working crossbeam (6) slidably connected to the column (3), and a covering beam plate (7) is fixedly provided in the middle of the bottom surface of the movable working crossbeam (6).

5. A frame type high pressure hydraulic press for plate forming according to claim 4, characterized in that: The hydraulic press body (1) comprises a support base (101), a bottom cross beam (102) and a mounting angle bracket (103), wherein the bottom cross beam (102) is fixedly mounted on the top of the support base (101), and the mounting angle bracket (103) is fixedly mounted on the four corners of the bottom of the support base (101); the bearing platform (2) comprises a workpiece carrier plate (201) and a carrier plate reinforcing angle plate (202), wherein the carrier plate reinforcing angle plate (202) is fixedly mounted on the front side and the rear side of the bottom surface of the workpiece carrier plate (201), and the workpiece carrier plate (201) and the carrier plate reinforcing angle plate (202) are respectively fixed on the top surface and the side surface of the bottom cross beam (102).

6. A frame type high pressure hydraulic press for plate forming according to claim 5, characterized in that: The support arm mechanism comprises a transverse support arm (8) and a fixed longitudinal arm (9), the two ends of the transverse support arm (8) are respectively fixedly connected to the bottom cross beam (102) and the fixed longitudinal arm (9), and one end of the transverse restraining sleeve rack (11) is fixedly connected to the fixed longitudinal arm (9).

7. A frame type high pressure hydraulic press for plate forming according to claim 6, characterized in that: The transverse support arm (8) comprises a main arm frame (801), an arm end plate (802) and assembly bolts (803); the arm end plate (802) is welded and fixedly installed on the two ends of the main arm frame (801); the arm end plate (802) is assembled and fixed to the bottom cross beam (102) or the fixed longitudinal arm (9) through the assembly bolts (803); the fixed longitudinal arm (9) comprises a longitudinal arm beam tube (901), a longitudinal arm oblique edge tube (902) and a longitudinal platform plate (903); the two ends of the longitudinal arm oblique edge tube (902) are respectively fixedly connected to the longitudinal arm beam tube (901); the ends of the longitudinal arm beam tube (901) and the longitudinal arm oblique edge tube (902) are fixedly connected to the longitudinal platform plate (903); the longitudinal arm beam tube (901) is assembled and connected to the arm end plate (802).

8. A frame type high pressure hydraulic press for plate forming according to claim 7, characterized in that: The transverse restraining sleeve rack (11) comprises a restraining sleeve (1101), a restraining sleeve (1102) and a stabilizing ring (1103); the restraining sleeve (1101) is slidably sleeved in the restraining sleeve (1102); the stabilizing ring (1103) is fixedly mounted on one end of the restraining sleeve (1101) which is inside the restraining sleeve (1102); and the stabilizing ring (1103) is a protruding annular structure; the end of the restraining sleeve (1102) is fixedly connected to the top and bottom ends of the longitudinal platform plate (903); the electric hydraulic push rod mechanism (10) comprises an electric hydraulic cylinder (1001) and a piston telescopic push rod (1002); the piston telescopic push rod (1002) is arranged inside the electric hydraulic cylinder (1001); and the electric hydraulic cylinder (1001) is fixedly connected to the middle part of the longitudinal platform plate (903).

9. A frame type high pressure hydraulic press for plate forming according to claim 1, characterized in that: The damping oil-gas fork inner tube portion (13) comprises an oil-gas fork inner tube housing (1301) and a first oil-gas fork end cover (1302), one end of the oil-gas fork inner tube housing (1301) is fixedly connected to the first oil-gas fork end cover (1302); the damping oil-gas fork sleeve portion (14) comprises an oil-gas fork outer tube housing (1401) and a second oil-gas fork end cover (1402), the end of the oil-gas fork outer tube housing (1401) is fixedly connected to the second oil-gas fork end cover (1402) The outer tube shell (1401) of the oil-gas fork is sleeved on the end of the inner tube shell (1301) of the oil-gas fork, and the two ends of the laminated damping spring (15) are respectively fixedly connected to the first oil-gas fork end cover (1302) and the second oil-gas fork end cover (1402). The inner ring of the laminated damping spring (15) does not contact the surface of the outer tube shell (1401) of the oil-gas fork, and the end of the plate constraining the bending axis (16) is fixedly connected to the end of the outer tube shell (1401) of the oil-gas fork.

10. A frame type high pressure hydraulic press for plate forming according to claim 1, characterized in that: The sheathing mechanism (18) comprises a sheathing end cover (1801) and a sheathing ring tube (1802); the sheathing ring tube (1802) is fixedly mounted on the edge of an end face of the sheathing end cover (1801) close to the bearing (17); and an end face of the sheathing end cover (1801) away from the bearing (17) is fixedly connected to a limiting concave arc platform (20) and a constrained rigid shaft (19).

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