A large-load intelligent internal high-pressure hydraulic forming equipment

Abstract

The present invention relates to the technical field of hydraulic forming, and discloses a large-load intelligent internal high-pressure hydraulic forming equipment, including a base and a special-shaped steel pipe, the special-shaped steel pipe is arranged on the top of the base, a high-pressure mechanism is arranged on the top of the base, a hydraulic mechanism is symmetrically arranged on the side of the high-pressure mechanism, and a detection mechanism is arranged on the outside of the hydraulic mechanism. The large-load intelligent internal high-pressure hydraulic forming equipment, the high-pressure mechanism includes a support rod symmetrically fixedly connected to the upper surface of the base, and the maximum thrust of the telescopic push head is limited by the detection control instrument, and the maximum hydraulic pressure sprayed by the groove is also limited, so as to avoid the problem of excessive hydraulic pressure causing the steel pipe with a thin inner wall thickness to rupture, and also avoid the problem of excessive hydraulic pressure causing the steel pipe with a thick inner wall thickness to wrinkle and incomplete forming, which not only improves the quality of preparing special-shaped steel pipes, but also improves the aesthetics of special-shaped steel pipes.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic forming, in particular to a large-load intelligent internal high-pressure hydraulic forming equipment. Background Art

[0002] Hydroforming is an advanced metal plastic processing technology, mainly used to manufacture hollow parts of various complex shapes. It uses liquid as a force transmission medium. For pipe hydroforming, the pipe is placed in a special mold, and high-pressure liquid is injected into the pipe to expand outward under the action of the internal liquid pressure. At the same time, axial thrust may be applied at both ends of the pipe to make the pipe material fit the shape of the mold cavity, thereby forming the required parts. This process utilizes the plastic deformation characteristics of metal materials. Under certain pressure and temperature conditions, metal materials can produce irreversible shape changes.

[0003] A Chinese invention patent with publication number CN104338818B discloses an internal high pressure forming device, including a clamping press, an internal high pressure mold, a first lateral hydraulic cylinder and a second lateral hydraulic cylinder, wherein a third lateral hydraulic cylinder is provided inside the first lateral hydraulic cylinder, and a third pusher is provided at the output end of the third lateral hydraulic cylinder; a liquid filling through hole is longitudinally provided at the front end of the third pusher, wherein the liquid outlet of the liquid filling through hole is provided at the end face of the free end of the third pusher, and the liquid inlet of the liquid filling through hole is provided on the side wall of the third pusher and can be connected with the first liquid filling hole. The present invention can obtain a higher internal pressure (greater than 400MPa) inside the tube blank during the forming process, so as to form some complex workpieces with large deformation and some hollow components with large volume and thick tube wall, and at the same time, hydraulic punching is performed by using a higher internal pressure, and the higher internal pressure directly pushes out the blank after punching, thereby reducing the subsequent cleaning work and improving the production efficiency.

[0004] In addition, since slight differences in pipe thickness may be magnified during the high-pressure hydraulic forming process, when the hydraulic strength is too high, the deformation of the steel pipe exceeds the material's ultimate elongation and rupture will occur. When the hydraulic strength is too low, the deformation of the steel pipe will be too low, resulting in the steel pipe being unable to fully fit the inner wall of the mold, causing the steel pipe to effectively deform. At the same time, under long-term repeated high-intensity hydraulic action, when processing some metal pipes that have not been finely processed, rust particles on the surface of the pipe will be embedded between the mold and the blank. As the blank moves, scratch-like wear is caused on the mold surface, causing the mold to leak. Therefore, the internal high-pressure forming equipment disclosed in Chinese invention patent CN104338818B cannot ensure that the hydraulic strength is suitable for steel pipes of different thicknesses, and cannot avoid the problem of leakage after long-term wear. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a large-load intelligent internal high-pressure hydraulic forming equipment, which has the advantages of preventing liquid leakage and automatically adjusting hydraulic pressure, and solves the problems of rupture and wrinkles in steel pipes.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a large-load intelligent internal high-pressure hydraulic forming equipment, comprising a base and a special-shaped steel pipe, the special-shaped steel pipe is arranged on the top of the base, a high-pressure mechanism is arranged on the top of the base, a hydraulic mechanism is symmetrically arranged on the side of the high-pressure mechanism, and a detection mechanism is arranged on the outside of the hydraulic mechanism.

[0009] Preferably, the high-pressure mechanism includes a support rod symmetrically fixedly connected to the upper surface of the base, the top of the support rod is penetrated and fixedly connected with a cover plate 1, the middle part of the cover plate 1 is penetrated and fixedly connected with a pump-type telescopic rod, the middle part of the cover plate 1 is slidably connected with a slide plate, the lower surface of the slide plate is fixedly connected with an upper mold plate, and the upper surface of the base is fixedly connected with a lower mold plate.

[0010] Preferably, the size of the inner cavity after the upper mold plate and the lower mold plate are aggregated is compatible with the size of the special-shaped steel pipe.

[0011] Preferably, there is an electrical connection between the pump-type telescopic rod and an external control device, and the slide plate is fixedly connected to the telescopic end of the pump-type telescopic rod.

[0012] Preferably, the hydraulic mechanism includes a fixed plate symmetrically fixedly connected to the upper surface of the base, the top of the fixed plate arranged on the right side of the special-shaped steel pipe is through-connected with a water tank box, the side wall of the water tank box is through-connected with a guide pipe, the side wall of the fixed plate is through-connected with a telescopic push head, the outer wall of the telescopic push head is fixedly connected with a sleeve plate, the end of the sleeve plate away from the fixed telescopic push head is slidably connected with a slot cover plate, a spring 1 is fixedly connected between the sleeve plate and the slot cover plate, the end of the slot cover plate away from the spring 1 is fixedly connected with a driving button arranged in a circular array, the inner wall of the sleeve plate is fixedly connected with a telescopic rod 1 arranged in a circular array, the top of the telescopic end of the telescopic rod 1 is fixedly connected with a fixed block, and a sealing plate is fixedly connected between the fixed blocks.

[0013] Preferably, the bottom end of the guide tube is connected to the inside of the telescopic push head.

[0014] Preferably, the size of the slot cover plate is matched with the size of the sleeve plate, and there is an electrical connection between the telescopic rod 1 and the driving button.

[0015] Preferably, the detection mechanism includes a detection control instrument fixedly connected to the outer wall of the telescopic push head located on the left side of the special-shaped steel pipe, a sliding rod is fixedly connected in an annular array on the outer wall of the end of the telescopic push head away from the fixed plate, a resistance plate is slidably connected between the sliding rods, and a spring 2 is sleeved on the end of the sliding rod away from the telescopic push head, a spray head rod is fixedly connected to the outer wall of the telescopic push head away from the fixed plate, a groove is provided in an annular array on the end of the spray head rod away from the telescopic push head, a rotating rod is rotatably connected inside the groove, both ends of the rotating rod are sleeved with torsion springs, and the side walls of the rotating rod are fixedly connected to the resistance rod, the end of the resistance rod away from the rotating rod is rotatably connected to a bracket, and the end of the bracket away from the resistance rod is rotatably connected to a hinge block.

[0016] Preferably, the two ends of the second spring are fixedly connected to the sliding rod and the contact plate respectively, the size of the contact rod is adapted to the size of the groove, and there is an electrical connection between the nozzle rod and the external control device.

[0017] Preferably, two ends of the torsion spring are fixedly connected to the groove and the rotating rod respectively, and the hinge block is fixedly connected to the contact plate.

[0018] Beneficial Effects

[0019] Compared with the prior art, the present invention provides a large-load intelligent internal high-pressure hydraulic forming equipment, which has the following beneficial effects:

[0020] 1. The maximum thrust of the telescopic push head is limited by the detection controller, and the maximum hydraulic pressure of the groove is also limited, which avoids the problem of excessive hydraulic pressure causing the steel pipe with thin inner wall thickness to rupture, and also avoids the problem of excessively low hydraulic pressure causing wrinkles and incomplete forming of steel pipes with thick inner wall thickness. It not only improves the quality of the preparation of special-shaped steel pipes, but also improves the aesthetics of special-shaped steel pipes.

[0021] 2. The gap between the lower mold plate and the upper mold plate is blocked by the sealing plate, which prevents the inner wall of the upper mold plate and the lower mold plate from being worn by the telescopic pusher head under the action of hydraulic pressure for a long time, prevents the gap between the inner wall of the mold and the telescopic pusher head from causing liquid leakage, and ensures the stability of hydraulic strength.

[0022] 3. The inner diameters of steel pipes of various sizes can be detected through the resistance rod and the bracket, which improves the flexibility of the equipment. At the same time, the hydraulic strength is indirectly controlled by the deformation generated by the spring 2, thereby improving the stability of the hydraulic strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a large-load intelligent internal high-pressure hydraulic forming equipment proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the position relationship between the base and the special-shaped steel pipe in a large-load intelligent internal high-pressure hydraulic forming equipment proposed by the present invention;

[0025] Figure 3 A schematic diagram of the position relationship between the lower die plate and the fixed plate in a large-load intelligent internal high-pressure hydraulic forming equipment proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the local structure of the hydraulic mechanism in a large-load intelligent internal high-pressure hydraulic forming equipment proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the position relationship between the sleeve plate and the driving button in a large-load intelligent internal high-pressure hydraulic forming equipment proposed by the present invention;

[0028] Figure 6 This is a schematic structural diagram of the position relationship between the sleeve plate and the sealing plate in a large-load intelligent internal high-pressure hydraulic forming equipment proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the local structure of a detection mechanism in a large-load intelligent internal high-pressure hydraulic forming equipment proposed by the present invention;

[0030] Figure 8 This is a schematic diagram of the position relationship between the nozzle rod and the hinge block in a large-load intelligent internal high-pressure hydraulic forming equipment proposed by the present invention.

[0031] In the figure: 1. base; 2. special-shaped steel pipe; 3. high-pressure mechanism; 31. support rod; 32. cover plate 1; 33. pump-type telescopic rod; 34. slide plate; 35. upper mold plate; 36. lower mold plate; 4. hydraulic mechanism; 41. fixed plate; 42. water tank box; 43. telescopic push head; 44. sleeve plate; 45. tank cover plate; 46. spring 1; 47. drive button; 48. telescopic rod 1; 49. fixed block; 410. sealing plate; 411. guide tube; 5. detection mechanism; 51. detection control instrument; 52. slide rod; 53. contact plate; 54. spring 2; 55. nozzle rod; 56. groove; 57. rotating rod; 58. torsion spring; 59. contact rod; 510. bracket; 511. hinge block. DETAILED DESCRIPTION

[0032] 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.

[0033] Example:

[0034] See attached Figures 1 to 8 As shown, a large-load intelligent internal high-pressure hydraulic forming equipment includes a base 1 and a special-shaped steel pipe 2. The special-shaped steel pipe 2 is arranged on the top of the base 1. A high-pressure mechanism 3 is arranged on the top of the base 1. A hydraulic mechanism 4 is symmetrically arranged on the side of the high-pressure mechanism 3. A detection mechanism 5 is arranged on the outside of the hydraulic mechanism 4.

[0035] Furthermore, the high-pressure mechanism 3 includes a support rod 31 symmetrically fixedly connected to the upper surface of the base 1, the top of the support rod 31 is penetrated and fixedly connected with a cover plate 32, the middle part of the cover plate 32 is penetrated and fixedly connected with a pump-type telescopic rod 33, there is an electrical connection between the pump-type telescopic rod 33 and an external control device, the middle part of the cover plate 32 is slidably connected with a slide plate 34, the slide plate 34 is fixedly connected to the telescopic end of the pump-type telescopic rod 33, the lower surface of the slide plate 34 is fixedly connected to an upper mold plate 35, the upper surface of the base 1 is fixedly connected to a lower mold plate 36, the inner cavity size after the upper mold plate 35 and the lower mold plate 36 are aggregated is compatible with the size of the special-shaped steel pipe 2.

[0036] Furthermore, the hydraulic mechanism 4 includes a fixed plate 41 symmetrically fixedly connected to the upper surface of the base 1, the top of the fixed plate 41 arranged on the right side of the special-shaped steel pipe 2 is connected with a water tank box 42, the side wall of the water tank box 42 is connected with a guide pipe 411, the side wall of the fixed plate 41 is connected with a telescopic push head 43, the bottom end of the guide pipe 411 is connected with the inside of the telescopic push head 43, the outer wall of the telescopic push head 43 is fixedly connected with a sleeve plate 44, and the end of the sleeve plate 44 away from the fixed end of the telescopic push head 43 is slidably connected with a slot cover plate 45, and the size of the slot cover plate 45 is adapted to the size of the sleeve plate 44. A spring 46 is fixedly connected between the sleeve plate 44 and the groove cover plate 45, and a driving button 47 is fixedly connected to the end of the groove cover plate 45 away from the spring 46 in a circular array. Telescopic rods 48 are fixedly connected to the inner wall of the sleeve plate 44 in a circular array. There is an electrical connection between the telescopic rods 48 and the driving button 47. Fixed blocks 49 are fixedly connected to the tops of the telescopic ends of the telescopic rods 48, and sealing plates 410 are fixedly connected between the fixed blocks 49. The sealing plates 410 are arranged to seal the interior of the upper mold plate 35 and the lower mold plate 36 to avoid liquid leakage affecting the reduction of hydraulic pressure.

[0037] Furthermore, the detection mechanism 5 includes a detection control instrument 51 fixedly connected to the outer wall of the telescopic push head 43 located on the left side of the special-shaped steel pipe 2, and the outer wall of the telescopic push head 43 away from the fixed plate 41 is arranged in a circular array and fixedly connected with sliding rods 52, and a resistance plate 53 is slidably connected between the sliding rods 52, and the end of the sliding rod 52 away from the telescopic push head 43 is sleeved with a spring 2 54, and the two ends of the spring 2 54 are respectively fixedly connected to the sliding rod 52 and the resistance plate 53, and the outer wall of the telescopic push head 43 away from the fixed plate 41 is fixedly connected with a nozzle rod 55, and there is an electrical connection between the nozzle rod 55 and the external control device, and the end of the nozzle rod 55 away from the telescopic push head 43 is provided with a groove 56 in a circular array, and the groove The interior of 56 is rotatably connected with a rotating rod 57, and both ends of the rotating rod 57 are sleeved with torsion springs 58. The two ends of the torsion spring 58 are fixedly connected to the groove 56 and the rotating rod 57 respectively. The side wall of the rotating rod 57 is fixedly connected with a resistance rod 59, and the size of the resistance rod 59 is adapted to the size of the groove 56. The end of the resistance rod 59 away from the rotating rod 57 is rotatably connected with a bracket 510, and the end of the bracket 510 away from the resistance rod 59 is rotatably connected with a hinge block 511, and the hinge block 511 is fixedly connected to the resistance plate 53. The thickness of the inner wall of the steel pipe is detected by the elastic force value generated by the stretching of the spring 54, so as to avoid the damage of the special-shaped steel pipe caused by the thrust of the telescopic push head 43 and the excessive hydraulic pressure sprayed from the groove 56.

[0038] It should be noted that an elastic force detector for detecting changes in the elastic force of spring 2 54 is installed inside the resistance plate 53. The elastic force detector detects the elastic force of spring 2 54 so that the detection result inside the elastic force detector enters the interior of the detection controller 51 in the form of an electrical signal, so that the detection controller 51 controls the maximum thrust of the telescopic push head 43 on the special-shaped steel pipe 2 and the maximum hydraulic pressure sprayed out of the groove 56.

[0039] The following is the working process and principle of the above embodiment:

[0040] The initial state is as follows: the pump-type telescopic rod 33 is in an unextended state, the spring 1 46 is in an uncontracted state, the telescopic rod 1 48 is in an unextended state, the spring 2 54 is in an unextended state, and the torsion spring 58 is in a non-rotated state.

[0041] The working steps are as follows: personnel put the steel pipe into the lower mold plate 36, and then control the telescopic end of the pump-type telescopic rod 33 to start extending downward through an external control device, so that the telescopic end of the pump-type telescopic rod 33 drives the slide plate 34 to start sliding downward on the outer wall of the support rod 31, so that the slide plate 34 drives the upper mold plate 35 to start sliding toward the side close to the lower mold plate 36 until the upper mold plate 35 and the lower mold plate 36 are closed.

[0042] Subsequently, the personnel controls the telescopic end of the telescopic push head 43 through an external control device to start extending toward the side close to the special-shaped steel pipe 2, so that the telescopic end of the telescopic push head 43 drives the sleeve plate 44 to start moving toward the side close to the special-shaped steel pipe 2, so that the sleeve plate 44 drives the spring 1 46 and the groove cover plate 45 to move synchronously toward the side close to the special-shaped steel pipe 2, so that the sleeve plate 44 drives the telescopic rod 1 48 and the fixed block 49 to move synchronously, so that the fixed block 49 drives the sealing plate 410 to move synchronously toward the side close to the special-shaped steel pipe 2, and the groove cover plate 45 drives the driving button 47 to move synchronously. When the driving button 47 contacts the upper mold plate 35 and the lower mold plate 36, the driving button 47 starts to retract toward the inside of the groove cover plate 45 until the groove cover plate 45 contacts the outer walls of the upper mold plate 35 and the lower mold plate 36, so that the groove cover plate 45 The sleeve plate 44 starts to move toward the side away from the driving button 47, and the groove cover plate 45 starts to squeeze the spring 46. At the same time, the driving button 47 controls the telescopic rod 48 through the external control device to start extending toward the side close to the special-shaped steel pipe 2, so that the telescopic rod 48 drives the sealing plate 410 to move synchronously toward the side close to the special-shaped steel pipe 2 through the fixed block 49, until the sealing plate 410 contacts the outer wall of the lower mold plate 36 and the upper mold plate 35, and the gap between the lower mold plate 36 and the upper mold plate 35 is blocked by the sealing plate 410, so as to avoid the inner wall of the upper mold plate 35 and the lower mold plate 36 after closing and the wear between the telescopic push head 43 for a long time under the action of hydraulic pressure, and to prevent the gap between the mold inner wall and the telescopic push head 43 to cause liquid leakage, thereby ensuring the stability of the hydraulic strength.

[0043] When the telescopic end of the telescopic push head 43 moves toward the side close to the special-shaped steel pipe 2, the telescopic push head 43 drives the sliding rod 52 and the nozzle rod 55 to move synchronously toward the side close to the special-shaped steel pipe 2 until the outer wall of the interference rod 59 contacts the outer wall of the opening of the special-shaped steel pipe 2, so that the interference rod 59 starts to rotate toward the side close to the telescopic push head 43 with the rotating rod 57 as the axis, and the rotating rod 57 rotates synchronously inside the groove 56, and at the same time, the rotating rod 57 drives the torsion spring 58 to start rotating, so that the interference rod 59 drives the bracket 510 rotatably connected thereto to move synchronously toward the side close to the telescopic push head 43, so that the bracket 510 drives the hinge block 511 to move toward the side close to the telescopic push head 43, so that the hinge block 511 drives the interference plate 53 to move synchronously , so that the contact plate 53 pulls the spring 2 54 to start stretching the spring 2 54 toward the side close to the telescopic push head 43. When the spring 2 54 is stretched, the elastic force generated by the spring 2 54 acts on the inside of the elastic force detector, so that the elastic force detector transmits the detection result to the inside of the detection control device 51 in the form of an electrical signal. The maximum thrust of the telescopic push head 43 is limited by the detection control device 51, and the maximum hydraulic pressure sprayed by the groove 56 is also limited, thereby avoiding the problem of excessive hydraulic pressure causing the steel pipe with a thinner inner wall thickness to rupture, and also avoiding the problem of excessive hydraulic pressure causing the steel pipe with a thicker inner wall thickness to wrinkle and incomplete forming. This not only improves the quality of the preparation of the special-shaped steel pipe 2, but also improves the aesthetics of the special-shaped steel pipe 2.

[0044] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0045] 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 large-load intelligent internal high-pressure hydraulic forming equipment, comprising a base (1) and a special-shaped steel pipe (2), wherein the special-shaped steel pipe (2) is arranged on the top of the base (1), characterized in that: A high-pressure mechanism (3) is arranged on the top of the base (1), a hydraulic mechanism (4) is symmetrically arranged on the side of the high-pressure mechanism (3), and a detection mechanism (5) is arranged on the outside of each of the hydraulic mechanisms (4); The hydraulic mechanism (4) comprises a fixed plate (41) symmetrically fixedly connected to the upper surface of the base (1), and a telescopic push head (43) is connected through the side wall of the fixed plate (41); the detection mechanism (5) also comprises a detection control instrument (51) fixedly connected to the outer wall of the telescopic push head (43) located on the left side of the special-shaped steel pipe (2), and sliding rods (52) are arranged in a circular array and fixedly connected on the outer wall of the end of the telescopic push head (43) away from the fixed plate (41), and a resistance plate (53) is slidably connected between the sliding rods (52), and the ends of the sliding rods (52) away from the telescopic push head (43) are sleeved with springs (54), and the telescopic push head (43) is connected to the outer wall of the telescopic push head (43) in a circular array. A nozzle rod (55) is fixedly connected to the outer wall of the retractable push head (43) at a side away from the fixed plate (41); grooves (56) are provided in a ring array at one end of the nozzle rod (55) away from the telescopic push head (43); rotating rods (57) are rotatably connected inside the grooves (56); torsion springs (58) are sleeved at both ends of the rotating rod (57); a resisting rod (59) is fixedly connected to the side wall of the rotating rod (57); one end of the resisting rod (59) away from the rotating rod (57) is rotatably connected to a bracket (510); and one end of the bracket (510) away from the resisting rod (59) is rotatably connected to a hinge block (511).

2. The large-load intelligent internal high-pressure hydraulic forming equipment according to claim 1 is characterized in that: The high-pressure mechanism (3) comprises a support rod (31) symmetrically fixedly connected to the upper surface of the base (1); the top end of the support rod (31) is penetrated and fixedly connected to a cover plate 1 (32); the middle part of the cover plate 1 (32) is penetrated and fixedly connected to a pump-type telescopic rod (33); the middle part of the cover plate 1 (32) is slidably connected to a slide plate (34); the lower surface of the slide plate (34) is fixedly connected to an upper mold plate (35); and the upper surface of the base (1) is fixedly connected to a lower mold plate (36).

3. The large-load intelligent internal high-pressure hydraulic forming equipment according to claim 2 is characterized in that: The size of the inner cavity after the upper mold plate (35) and the lower mold plate (36) are assembled is compatible with the size of the special-shaped steel pipe (2).

4. The large-load intelligent internal high-pressure hydraulic forming equipment according to claim 2 is characterized in that: There is an electrical connection between the pump-type telescopic rod (33) and the external control device, and the slide plate (34) is fixedly connected to the telescopic end of the pump-type telescopic rod (33).

5. The large-load intelligent internal high-pressure hydraulic forming equipment according to claim 2 is characterized in that: A water tank box (42) is connected through the top of a fixed plate (41) arranged on the right side of the special-shaped steel pipe (2), and a guide tube (411) is connected through the side wall of the water tank box (42); a sleeve plate (44) is fixedly connected to the outer wall of the telescopic push head (43); a slot cover plate (45) is slidably connected to the end of the sleeve plate (44) away from the fixed end of the telescopic push head (43); a spring (46) is fixedly connected between the sleeve plate (44) and the slot cover plate (45); a driving button (47) is fixedly connected to the end of the slot cover plate (45) away from the spring (46) in a circular array; telescopic rods (48) are fixedly connected to the inner wall of the sleeve plate (44) in a circular array; the tops of the telescopic ends of the telescopic rods (48) are fixedly connected to fixing blocks (49); and sealing plates (410) are fixedly connected between the fixing blocks (49).

6. The large-load intelligent internal high-pressure hydraulic forming equipment according to claim 5, characterized in that: The bottom end of the flow guide tube (411) is connected to the inside of the telescopic push head (43).

7. The large-load intelligent internal high-pressure hydraulic forming equipment according to claim 5 is characterized in that: The size of the slot cover plate (45) matches the size of the sleeve plate (44), and there is an electrical connection between the telescopic rod 1 (48) and the driving button (47).

8. The large-load intelligent internal high-pressure hydraulic forming equipment according to claim 1 is characterized in that: The two ends of the second spring (54) are respectively fixedly connected to the slide rod (52) and the abutment plate (53); the size of the abutment rod (59) matches the size of the groove (56); and there is an electrical connection between the nozzle rod (55) and the external control device.

9. The large-load intelligent internal high-pressure hydraulic forming equipment according to claim 1, characterized in that: The two ends of the torsion spring (58) are respectively fixedly connected to the groove (56) and the rotating rod (57), and the hinge block (511) is fixedly connected to the abutment plate (53).

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