A forging die and method for stainless steel forgings for liquid hydrogen storage

Abstract

The invention discloses a forging die and method for stainless steel forgings for liquid hydrogen storage, comprising a machine base, a lower die base being installed on the machine base, a lower die groove being installed on the lower die base, the lower die groove being assembled by two symmetrically distributed half-lower die grooves, the half-lower die groove being driven to move by a movable locking mechanism installed on the lower die base; an upper die groove being arranged above the lower die groove, the upper die groove being driven to rise and fall by a hydraulic rod installed on the machine base; a groove body being provided on the inner bottom wall of the half-lower die groove, a first elastic component being installed on the inner side of the groove body for assisting demoulding of forged pieces inside the half-lower die groove, the first elastic component comprising a first lifting plate engaged and clamped in the groove body, the invention relates to the technical field of forging dies, the forging die and method for stainless steel forgings for liquid hydrogen storage solves the problem that the existing forging dies for stainless steel forgings for liquid hydrogen storage are inconvenient to quickly take out the forgings after the forgings are processed, so as to facilitate the next forging.

Description

Technical Field

[0001] The invention relates to the technical field of forging dies, and in particular to a forging die and a method for forging stainless steel forgings for liquid hydrogen storage. Background Art

[0002] Metal molds are also called steel molds, a type of casting mold. Metal mold forming technology is a new high-tech metal material application. As a metal component, it has rapid development potential. Just like plastic molds, it can manufacture high-capacity, low-cost and complex parts. The existing casting method of stainless steel forgings for liquid hydrogen storage often uses scrap steel to make molten steel, injects the molten steel into the metal mold, cools and forms it, and then forges the formed intermediate piece. The forging mold is a key process equipment necessary in the production of die forgings. It is a tool that needs to be used in every stroke of the equipment and plays a vital role in the production of die forgings.

[0003] Stainless steel forging process flow: ingot - qualified inspection - heated in furnace - forged on press after meeting heating process (according to customer drawings) - slow cooling after forging - slow cooling time meets process inspection and finishing sawing - rough turning after heat treatment (normalizing or annealing) - heat treatment again (tempering) - semi-finishing turning - delivery.

[0004] For example, the forging die for stainless steel forging production and processing disclosed in patent CN220406962U includes a main body, two fixed horizontal plates are fixedly installed at the bottom end of the inner cavity of the main body, two second limit grooves are provided on the sides of the two fixed horizontal plates, and the interiors of the two second limit grooves are slidably connected with second limit columns. The forging die for stainless steel forging production and processing is inserted and clamped by the plug rod to the main body and the connecting horizontal plate. During the whole operation, the problem of sparks and debris splashing during the forging process causing injuries to the staff due to the hot embryo of the stainless steel forging being at a high melting temperature is effectively solved. A hand-controlled baffle is used to form a safe operating area during the forging process, which can effectively block the sparks and debris splashing during the forging process, avoid injuries to the staff, and improve the safety factor during operation.

[0005] However, the existing forging dies for stainless steel forgings for liquid hydrogen storage, including the forging dies for stainless steel forgings disclosed above, still have the following defects and deficiencies in the specific implementation process:

[0006] The existing forging dies for stainless steel forgings for liquid hydrogen storage are not convenient for quickly demolding and removing the forgings after the stainless steel forgings are processed, and it is not convenient for the next forging. At the same time, the stainless steel forgings in the die are prone to cool over time during the forging process, affecting the forging effect. For this reason, we propose a forging die for stainless steel forgings for liquid hydrogen storage and a method thereof to solve the above-mentioned problems. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a forging die and method for stainless steel forgings for liquid hydrogen storage. Two groups of half lower die grooves can be locked and fixed after docking through a movable plate, so that the half lower die grooves can be separated and quickly demolded and the forged parts can be taken out after forging is completed; the second spring elastic force is used to pop out the second lifting plate so that the top of the forging is naturally separated from the upper die groove, and the first spring elastic force is used to lift the hinge rod so that the bottom of the forging is separated by the first lifting plate, so that the present invention can quickly realize the demolding and taking out of the forged forging after forging is completed; and an auxiliary heating device is provided on one side of the half lower die groove, the auxiliary heating device includes a base, a lampshade, etc., and the auxiliary heating device is moved to one side of the half lower die groove by a moving mechanism during forging, and the electric heating wire can be used to heat and keep the forgings warm during use, so as to facilitate forging and shaping, improve forging, and solve the problem that the existing forging die for stainless steel forgings for liquid hydrogen storage is not convenient for quickly taking out the forgings after the forgings are processed, and is not convenient for the next forging.

[0008] Technical Solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: A forging die for stainless steel forgings for liquid hydrogen storage, comprising a machine base, a lower die base is installed on the machine base, a lower die groove is installed on the lower die base, the lower die groove is assembled by two symmetrically distributed half lower die grooves, and the half lower die groove is driven to move by a moving locking mechanism installed on the lower die base;

[0010] An upper die groove is arranged above the lower die groove, and the upper die groove is driven to rise and fall by a hydraulic rod installed on the machine base;

[0011] A groove body is formed on the inner bottom wall of the semi-lower die groove, and a first elastic component is installed on the inner side of the groove body for assisting demoulding of the forged part inside the semi-lower die groove, wherein the first elastic component comprises a first lifting plate engaged and clamped in the groove body, one end of the first lifting plate is hinged to the semi-lower die groove through a hinge rod, and a first spring is fixed between the bottom of the other end of the first lifting plate and the groove body;

[0012] A rectangular groove is provided on one side of the half lower die groove, a rectangular pressing plate is movably clamped in the rectangular groove for clamping and fixing the first lifting plate, and the rectangular pressing plate is driven to move horizontally by a moving mechanism, and the moving mechanism is arranged above a bracket fixed on one side of the machine base;

[0013] A second elastic component is arranged in the upper die groove to assist demoulding of the forged piece inside the upper die groove.

[0014] Preferably, the bracket is also provided with an auxiliary heating device for auxiliary heating of the forgings in the semi-lower die groove, and the auxiliary heating device is driven to move by a moving mechanism.

[0015] Preferably, the movable locking mechanism comprises an electric telescopic rod fixed on the lower mold base, a movable plate is installed at one end of the electric telescopic rod, a plurality of locking bolts are threadedly connected on the movable plate, and one end of the locking bolt is rotatably connected to the half lower mold groove through a bearing.

[0016] Preferably, the outer dimensions of the first lifting plate and the rectangular pressing plate are matched with the inner dimensions of the tank body, and the rectangular pressing plate and the first lifting plate are engaged and clamped inside the tank body to make the inner bottom wall of the semi-lower mold groove flat.

[0017] Preferably, the auxiliary heating device comprises a base, a lampshade is mounted on the base, an electric heating wire is mounted in the middle of the lampshade, and a switch is mounted on the base.

[0018] Preferably, the moving mechanism includes a motor fixed on a bracket, a screw is installed at the output end of the motor, a first threaded sleeve and a second threaded sleeve are threadedly connected on the screw, the bottom of the auxiliary heating device is fixedly connected to the first threaded sleeve, and the rectangular pressure plate is fixedly connected to the second threaded sleeve.

[0019] Preferably, the bottom of the first threaded sleeve is smooth, and the bottom of the first threaded sleeve contacts and is slidably connected to the surface of the bracket.

[0020] Preferably, the inner surface dimensions of the upper die groove and the half lower die groove are adapted to each other, and the upper die groove and the half lower die groove are respectively clamped at the top and the bottom of the forging, and an auxiliary lifting mechanism is also provided at the top of the upper die groove, and the auxiliary lifting mechanism includes a plurality of limiting through grooves opened at the top of the upper die groove, and a limiting push rod is movably inserted in the limiting through groove, and an electric push rod is installed at the center of the top of the upper die groove, and a plurality of hinged plates are hingedly installed on the top of the electric push rod, and the other end of the hinged plate is hinged to the top of the limiting push rod, and a rectangular slide groove is fixedly installed at the bottom of the hinge plate, and a rectangular slider is movably clamped inside the rectangular slide groove, and a telescopic rod is fixed at the top of the upper die groove and between the limiting through groove and the electric push rod, and the top of the telescopic rod is fixedly connected to the rectangular slider.

[0021] Preferably, the second elastic component comprises a second lifting plate on the inner side of the upper mold groove, and second springs are respectively fixed between the top four corners of the second lifting plate and the inner wall of the upper mold groove.

[0022] Furthermore, a method for forging a die for a stainless steel forging for liquid hydrogen storage specifically comprises the following steps:

[0023] S1. Start the electric telescopic rod to move and dock the two sets of half lower mold grooves, and lock and fix the half lower mold grooves through the movable plate. Use the moving mechanism to drive the rectangular pressing plate to move to the inside of the rectangular groove to press the first lifting plate inside the half lower mold groove to make the bottom wall inside the half lower mold groove flat;

[0024] S2. Place the formed intermediate forging inside the half lower die groove, start the hydraulic rod to drive the upper die groove to move down to the top of the half lower die groove, and perform die casting forging on the forging in the half lower die groove;

[0025] S3. After forging is completed, the hydraulic rod is started to drive the upper die groove to move upward, and the second lifting plate is ejected by the elastic force of the second spring so that the top of the forging is naturally separated from the upper die groove, and the electric push rod is started to drive one end of the hinged plate to tilt up, thereby driving the other end of the hinged plate to move downward, and then driving the limiting ejector rod to move up and down in the limiting slot, and the limiting ejector rod is used to move the second lifting plate downward to assist in separating the top of the forging from the upper die groove;

[0026] S4. The rectangular pressing plate is moved by the moving mechanism to be pulled out from the inside of the rectangular groove, and the hinge rod is lifted up by the elastic force of the first spring so as to separate the bottom of the forging from the first lifting plate;

[0027] S5. Start the electric telescopic rod to separate the two sets of half lower die grooves, take out the forging and complete demoulding.

[0028] Beneficial Effects

[0029] The invention provides a forging die and a method for a stainless steel forging for liquid hydrogen storage.

[0030] Compared with the prior art, it has the following beneficial effects:

[0031] 1. A forging die and method for stainless steel forgings for liquid hydrogen storage, wherein a lower die groove is assembled from two symmetrically distributed half lower die grooves, and the half lower die grooves are movable and locked by a movable locking mechanism, the movable locking mechanism includes an electric telescopic rod, a movable plate, etc., and starting the electric telescopic rod to move and connect or separate the two groups of half lower die grooves, and the two groups of half lower die grooves can be locked and fixed after docking through the movable plate, so that the forging can be quickly demoulded and the forged part can be taken out by separating the half lower die grooves after forging.

[0032] 2. A forging die and method for stainless steel forgings for liquid hydrogen storage. After the forging of the stainless steel forgings is completed, the hydraulic rod is started to drive the upper die groove to move upward. After the upper die groove is separated from the forging, the second lifting plate is driven downward by the action of the second spring to achieve the lifting of the forging, and the electric push rod is started to drive one end of the hinged plate to tilt up, thereby driving the other end of the hinged plate to move downward and then driving the limiting push rod to move up and down in the limiting through groove. The limiting push rod is used to move the second lifting plate downward to assist the top of the forging to separate from the upper die groove and prevent the forging from being stuck with the upper die groove. The second spring elastic force is used to pop out the second lifting plate so that the top of the forging naturally separates from the upper die groove. At the same time, the moving mechanism is used to drive the rectangular pressing plate to move and pull the rectangular pressing plate out from the inner side of the rectangular groove. The first spring elastic force is used to lift the hinged rod so that the bottom of the forging is separated by the first lifting plate. Therefore, the present invention can quickly realize the demoulding and removal of the forged forging after the forging is completed.

[0033] 3. A forging die and method for stainless steel forgings for liquid hydrogen storage, wherein an auxiliary heating device is provided on one side of a semi-lower die groove, the auxiliary heating device comprising a base, a lampshade, etc. During forging, the auxiliary heating device is moved to one side of the semi-lower die groove by a moving mechanism, and an electric heating wire can be used to heat and keep the forgings warm during use, thereby facilitating forging and shaping thereof and improving the forging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the first-view stereoscopic structure of a forging die and method for stainless steel forgings for liquid hydrogen storage of the present invention;

[0035] Figure 2 A schematic diagram of the stereoscopic structure of a forging die and method of a stainless steel forging for liquid hydrogen storage according to the present invention from a second viewing angle;

[0036] Figure 3 It is a partial structural schematic diagram of a forging die and method of a stainless steel forging for liquid hydrogen storage of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of a forging die and a moving locking mechanism of a stainless steel forging for liquid hydrogen storage of the present invention;

[0038] Figure 5 The present invention provides a forging die and method for stainless steel forgings for liquid hydrogen storage Figure 2 Schematic diagram of partial enlarged structure;

[0039] Figure 6 This is a schematic diagram of the overall structure of the first elastic component of a forging die and method for stainless steel forgings for liquid hydrogen storage of the present invention;

[0040] Figure 7 This is a schematic diagram of the overall structure of a forging die and a heating auxiliary device for a stainless steel forging for liquid hydrogen storage according to the present invention;

[0041] Figure 8 This is a schematic diagram of the structure of a forging die and a moving mechanism of a stainless steel forging for liquid hydrogen storage of the present invention;

[0042] Fig. 9 It is a schematic cross-sectional structure diagram of a second elastic component of a forging die and method for stainless steel forgings for liquid hydrogen storage of the present invention;

[0043] Fig.10 The present invention is a schematic diagram of the structure of a forging die and method-assisted jacking mechanism of a stainless steel forging for liquid hydrogen storage.

[0044] In the figure, the components represented by the reference numerals are as follows:

[0045] 1. Machine base; 2. Lower die base; 3. Half lower die groove; 31. Slot body; 32. Rectangular groove; 4. Upper die groove; 5. Hydraulic rod; 6. Mobile locking mechanism; 61. Electric telescopic rod; 62. Movable plate; 63. Locking bolt; 7. Bracket; 8. First elastic component; 81. First lifting plate; 82. Articulated rod; 83. First spring; 9. Rectangular pressing plate; 10. Auxiliary heating device; 101. Base; 102. Lamp cover; 103. Electric heating wire ; 104, switch; 11, moving mechanism; 111, motor; 112, screw; 113, first threaded sleeve; 114, second threaded sleeve; 12, second elastic component; 121, second lifting plate; 122, second spring; 14, auxiliary lifting mechanism; 141, limiting through groove; 142, limiting push rod; 143, electric push rod; 144, hinged plate; 145, rectangular slide groove; 146, telescopic rod; 147, rectangular slider. DETAILED DESCRIPTION

[0046] 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.

[0047] See also Figure 1-10 , the embodiment of the present invention provides the following technical solutions:

[0048] A forging die for stainless steel forgings for liquid hydrogen storage, comprising a machine base 1, a lower die base 2 is mounted on the machine base 1, a lower die groove is mounted on the lower die base 2, the lower die groove is assembled by two symmetrically distributed half lower die grooves 3, and the half lower die groove 3 is driven to move by a moving locking mechanism 6 mounted on the lower die base 2;

[0049] An upper die groove 4 is arranged above the lower die groove, and the upper die groove 4 is driven to rise and fall by a hydraulic rod 5 installed on the machine base 1;

[0050] A groove body 31 is formed on the inner bottom wall of the semi-lower die groove 3. A first elastic component 8 is installed on the inner side of the groove body 31 for assisting demoulding of the forged parts inside the semi-lower die groove 3. The first elastic component 8 includes a first lifting plate 81 engaged and clamped in the groove body 31. One end of the first lifting plate 81 is hinged to the semi-lower die groove 3 through a hinge rod 82. A first spring 83 is fixed between the bottom of the other end of the first lifting plate 81 and the groove body 31.

[0051] A rectangular groove 32 is provided on one side of the half lower die groove 3, and a rectangular pressing plate 9 is movably connected in the rectangular groove 32 for pressing and fixing the first lifting plate 81, and the rectangular pressing plate 9 is driven to move horizontally by a moving mechanism 11, and the moving mechanism 11 is arranged above a bracket 7 fixed on one side of the machine base 1;

[0052] A second elastic component 12 is arranged in the upper die groove 4 to assist demoulding of the forged part inside the upper die groove 4 .

[0053] A method for forging a die for a stainless steel forging for liquid hydrogen storage, comprising the following steps:

[0054] S1. Use the mobile locking mechanism 6 to drive the two sets of half lower mold grooves to move and dock, and lock and fix them. Use the mobile mechanism to drive the rectangular pressing plate to move to the inside of the rectangular groove to press the first lifting plate inside the half lower mold groove to make the bottom wall inside the half lower mold groove flat;

[0055] S2. Place the formed intermediate forging inside the half lower die groove, start the hydraulic rod to drive the upper die groove to move down to the top of the half lower die groove, and perform die casting forging on the forging in the half lower die groove;

[0056] S3. After forging is completed, the hydraulic rod is started to drive the upper die groove to move upward, and the second elastic component 12 is used to pop up the second lifting plate so that the top of the forging naturally leaves the upper die groove;

[0057] S4. The rectangular pressing plate is moved by the moving mechanism to be pulled out from the inside of the rectangular groove, and the hinge rod is lifted up by the elastic force of the first spring so as to separate the bottom of the forging from the first lifting plate;

[0058] S5. Start the electric telescopic rod to separate the two sets of half lower die grooves, take out the forging and complete demoulding.

[0059] Among them, a forging die for stainless steel forgings for liquid hydrogen storage includes a machine base 1, a lower die base 2 is installed on the machine base 1, a lower die groove is installed on the lower die base 2, and the lower die groove is assembled by two symmetrically distributed half lower die grooves 3, and the half lower die groove 3 is driven to move by a moving locking mechanism 6 installed on the lower die base 2;

[0060] An upper die groove 4 is arranged above the lower die groove, and the upper die groove 4 is driven to rise and fall by a hydraulic rod 5 installed on the machine base 1;

[0061] A groove body 31 is formed on the inner bottom wall of the semi-lower die groove 3. A first elastic component 8 is installed on the inner side of the groove body 31 for assisting demoulding of the forged parts inside the semi-lower die groove 3. The first elastic component 8 includes a first lifting plate 81 engaged and clamped in the groove body 31. One end of the first lifting plate 81 is hinged to the semi-lower die groove 3 through a hinge rod 82. A first spring 83 is fixed between the bottom of the other end of the first lifting plate 81 and the groove body 31.

[0062] A rectangular groove 32 is provided on one side of the half lower die groove 3, and a rectangular pressing plate 9 is movably connected in the rectangular groove 32 for pressing and fixing the first lifting plate 81, and the rectangular pressing plate 9 is driven to move horizontally by a moving mechanism 11, and the moving mechanism 11 is arranged above a bracket 7 fixed on one side of the machine base 1;

[0063] A second elastic component 12 is arranged in the upper die groove 4 to assist demoulding of the forged part inside the upper die groove 4 .

[0064] In this embodiment, an auxiliary heating device 10 is also provided on the bracket 7 for auxiliary heating of the forgings in the semi-lower die groove 3. The auxiliary heating device 10 is driven to move by a moving mechanism 11. The auxiliary heating device 10 includes a base 101, a lampshade 102, etc. During forging, the auxiliary heating device 10 is moved to one side of the semi-lower die groove 3 by the moving mechanism 11. The electric heating wire 103 can be used to heat and keep the forgings warm during use, which facilitates forging and shaping and improves the forging effect.

[0065] In this embodiment, the mobile locking mechanism 6 includes an electric telescopic rod 61 fixed on the lower die base 2, one end of the electric telescopic rod 61 is installed with a movable plate 62, and a plurality of locking bolts 63 are threadedly connected to the movable plate 62. One end of the locking bolt 63 is rotatably connected to the half lower die groove 3 through a bearing. Starting the electric telescopic rod 61 to extend and retract can drive the two groups of half lower die grooves 3 to move and dock, and by tightening the movable plate 62, the two groups of half lower die grooves 3 can be locked and fixed;

[0066] In this embodiment, the outer dimensions of the first lifting plate 81 and the rectangular pressing plate 9 are adapted to the inner dimensions of the groove body 31. After the rectangular pressing plate 9 and the first lifting plate 81 are engaged and clamped inside the groove body 31, the inner bottom wall of the semi-lower die groove 3 is flattened. The moving mechanism 11 can drive the rectangular pressing plate 9 to move to the inner side of the rectangular groove 32 to press the first lifting plate 81 inside the semi-lower die groove 3 to make the inner bottom wall of the semi-lower die groove 3 flat.

[0067] In this embodiment, the auxiliary heating device 10 includes a base 101, a lampshade 102 is installed on the base 101, an electric heating wire 103 is installed in the middle of the lampshade 102, and a switch 104 is installed on the base 101. During forging, the auxiliary heating device 10 is moved to one side of the semi-lower die groove 3 by the moving mechanism 11, and the switch 104 is turned on to use the electric heating wire 103 to heat and keep the forgings warm, so as to facilitate forging and shaping.

[0068] In this embodiment, the moving mechanism 11 includes a motor 111 fixed on the bracket 7, a screw rod 112 is installed at the output end of the motor 111, a first threaded sleeve 113 and a second threaded sleeve 114 are threadedly connected on the screw rod 112, the bottom of the auxiliary heating device 10 is fixedly connected to the first threaded sleeve 113, the bottom of the first threaded sleeve 113 is in contact with the surface of the bracket 7 and is smoothly connected, the rectangular pressing plate 9 is fixedly connected to the second threaded sleeve 114, the motor 111 is started to drive the screw rod 112 to rotate, and the first threaded sleeve 113, the second threaded sleeve 114 and the screw rod 112 are threadedly connected to drive the auxiliary heating device 10 and the rectangular pressing plate 9 to move horizontally respectively;

[0069] In this embodiment, the inner surface dimensions of the upper die groove 4 and the half lower die groove 3 are adapted, and the upper die groove 4 and the half lower die groove 3 are respectively clamped at the top and bottom of the forging, and an auxiliary lifting mechanism 14 is also provided at the top of the upper die groove 4, and the auxiliary lifting mechanism 14 includes a plurality of limiting through grooves 141 opened at the top of the upper die groove 4, and a limiting ejector rod 142 is movably inserted in the limiting through groove 141, and an electric push rod 143 is installed at the center of the top of the upper die groove 4, and a plurality of hinged plates 144 are hingedly installed at the top of the electric push rod 143, and the other end of the hinged plate 144 is hinged to the top of the limiting ejector rod 142, and the bottom of the hinged plate 144 is hinged to the top of the limiting ejector rod 142. A rectangular slide 145 is fixedly installed on the upper die 4, and a rectangular slider 147 is movably connected inside the rectangular slide 145. A telescopic rod 146 is fixed on the top of the upper die groove 4 and located between the limiting groove 141 and the electric push rod 143. The top of the telescopic rod 146 is fixedly connected to the rectangular slider 147. By starting the electric push rod 143, one end of the hinge plate 144 is driven to tilt up, thereby driving the other end of the hinge plate 144 to move downward, and then driving the limiting push rod 142 to move up and down in the limiting groove 141. The limiting push rod 142 is used to move the second lifting plate 121 downward, so as to assist in separating the top of the forging from the upper die groove 4.

[0070] In this embodiment, the second elastic component 12 includes a second lifting plate 121 on the inner side of the upper die groove 4, and second springs 122 are respectively fixed between the top four corners of the second lifting plate 121 and the inner wall of the upper die groove 4. The hydraulic rod 5 is started to drive the upper die groove 4 to move upward. After the upper die groove 4 is separated from the forging, the second lifting plate 121 is driven downward by the action of the second spring 122 to lift the forging and prevent the forging from being stuck with the upper die groove 4. The second lifting plate 121 is ejected by the elastic force of the second spring 122 to allow the top of the forging to naturally separate from the upper die groove 4.

[0071] When the forging die and method for stainless steel forgings for liquid hydrogen storage are used, first, the electric telescopic rod 61 is started to telescope to drive the two groups of half lower die grooves 3 to move and dock, and the half lower die grooves 3 are locked and fixed by the movable plate 62, and the moving mechanism 11 is used to drive the rectangular pressing plate 9 to move to the inside of the rectangular groove 32 to press the first lifting plate 81 inside the half lower die groove 3 to make the bottom wall inside the half lower die groove 3 flat; then the formed intermediate forging is placed inside the half lower die groove 3, and the hydraulic rod 5 is started to drive the upper die groove 4 to move down to above the half lower die groove 3, and the forging in the half lower die groove 3 is die-cast forged; after the forging is completed, the hydraulic rod 5 is started to drive the upper die groove 4 to move up, and the elastic force of the second spring 122 is used to lift the second top plate 81 to the inside of the half lower die groove 3. The lifting plate 121 pops up to make the top of the forging naturally detach from the upper die groove 4, and by starting the electric push rod 143, one end of the hinged plate 144 is driven to tilt up, thereby driving the other end of the hinged plate 144 to move downward, and then driving the limiting push rod 142 to move up and down in the limiting through groove 141, and the limiting push rod 142 is used to move the second lifting plate 121 downward to assist in making the top of the forging detach from the upper die groove 4; then the moving mechanism 11 is used to drive the rectangular pressing plate 9 to move and pull the rectangular pressing plate 9 out from the inner side of the rectangular groove 32, and the elastic force of the first spring 83 is used to lift the hinge rod 82, so as to use the first lifting plate 81 to detach the bottom of the forging; finally, the electric telescopic rod 61 is started to telescope to drive the two groups of semi-lower die grooves 3 to separate, and the forging is taken out to complete demolding.

[0072] In a forging die and method for stainless steel forgings for liquid hydrogen storage of the present invention, when in use, the forging is placed in two groups of half lower die grooves 3, the electric telescopic rod 61 is started to extend and retract to drive the two groups of half lower die grooves 3 to move and dock, and the half lower die grooves 3 are locked and fixed by the movable plate 62, and the rectangular pressing plate 9 is driven by the moving mechanism 11 to move to the inner side of the rectangular groove 32 to press the first lifting plate 81 inside the half lower die groove 3 to make the bottom wall inside the half lower die groove 3 flat, and the lower die groove is assembled by two symmetrically distributed half lower die grooves 3, and the half lower die groove 3 is driven to move and lock and fix by the moving locking mechanism 6, and the moving locking mechanism 6 includes an electric telescopic rod 61, a movable plate 62, etc., and the electric telescopic rod 61 is started to extend and retract to drive the two groups of half lower die grooves 3 to move and dock or separate, and the two groups of half lower die grooves 3 can be locked and fixed after docking through the movable plate 62, so that after the forging of the forged piece is completed, the half lower die groove 3 can be separated and the forged piece can be quickly demolded and taken out; after the forging is completed, the hydraulic rod 5 is started to drive the upper After the die groove 4 moves upward and the upper die groove 4 is separated from the forging, the second lifting plate 121 is driven downward by the action of the second spring 122 to lift the forging and prevent the forging from being stuck with the upper die groove 4. The second lifting plate 121 is ejected by the elastic force of the second spring 122 to make the top of the forging naturally separate from the upper die groove 4. At the same time, the moving mechanism 11 is used to drive the rectangular pressing plate 9 to move and pull the rectangular pressing plate 9 out from the inner side of the rectangular groove 32. The elastic force of the first spring 83 is used to lift the hinge rod 82 to facilitate The bottom of the forging is separated by the first lifting plate 81, so that the present invention can quickly realize the demolding and removal of the forged forging after the forging is completed; during the forging process, an auxiliary heating device 10 is arranged on one side of the semi-lower die groove 3, and the auxiliary heating device 10 includes a base 101, a lampshade 102, etc. During forging, the auxiliary heating device 10 is moved to one side of the semi-lower die groove 3 by the moving mechanism 11, and the electric heating wire 103 can be used to heat and keep the forging warm during use, so as to facilitate the forging and shaping thereof and improve the forging effect.

[0073] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0074] 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.

[0075] 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 forging die for stainless steel forgings for liquid hydrogen storage, comprising a machine base (1), characterized in that: A lower die base (2) is mounted on the machine base (1), a lower die groove is mounted on the lower die base (2), the lower die groove is assembled from two symmetrically distributed half lower die grooves (3), and the half lower die groove (3) is driven to move by a moving locking mechanism (6) mounted on the lower die base (2); An upper die groove (4) is arranged above the lower die groove, and the upper die groove (4) is driven to rise and fall by a hydraulic rod (5) installed on the machine base (1); The inner bottom wall of the semi-lower die groove (3) is provided with a groove body (31), and a first elastic component (8) is installed on the inner side of the groove body (31) for assisting demoulding of the forged part inside the semi-lower die groove (3), and the first elastic component (8) comprises a first lifting plate (81) engaged and clamped in the groove body (31), one end of the first lifting plate (81) is hinged to the semi-lower die groove (3) through a hinge rod (82), and a first spring (83) is fixed between the bottom of the other end of the first lifting plate (81) and the groove body (31); A rectangular groove (32) is provided on one side of the half lower die groove (3), a rectangular pressing plate (9) is movably clamped in the rectangular groove (32) for clamping and fixing the first lifting plate (81), and the rectangular pressing plate (9) is driven to move horizontally by a moving mechanism (11), and the moving mechanism (11) is arranged above a bracket (7) fixed on one side of the machine base (1); A second elastic component (12) is arranged in the upper die groove (4) and is used to assist in demoulding the forged part inside the upper die groove (4).

2. The forging die of a stainless steel forging for liquid hydrogen storage according to claim 1, characterized in that: The support (7) is also provided with an auxiliary heating device (10) for auxiliary heating of the forged part in the semi-lower die groove (3); the auxiliary heating device (10) is driven to move by a moving mechanism (11).

3. The forging die of a stainless steel forging for liquid hydrogen storage according to claim 1, characterized in that: The movable locking mechanism (6) comprises an electric telescopic rod (61) fixed on the lower die base (2), a movable plate (62) being installed at one end of the electric telescopic rod (61), a plurality of locking bolts (63) being threadedly connected to the movable plate (62), and one end of the locking bolts (63) being rotatably connected to the half lower die groove (3) via a bearing.

4. The forging die of a stainless steel forging for liquid hydrogen storage according to claim 1, characterized in that: The outer dimensions of the first lifting plate (81) and the rectangular pressing plate (9) are adapted to the inner dimensions of the trough body (31); after the rectangular pressing plate (9) and the first lifting plate (81) are engaged and clamped inside the trough body (31), the inner bottom wall of the semi-lower die groove (3) is made flat.

5. The forging die of a stainless steel forging for liquid hydrogen storage according to claim 2, characterized in that: The auxiliary heating device (10) comprises a base (101), a lampshade (102) is mounted on the base (101), an electric heating wire (103) is mounted in the middle of the lampshade (102), and a switch (104) is mounted on the base (101).

6. The forging die of a stainless steel forging for liquid hydrogen storage according to claim 2, characterized in that: The moving mechanism (11) comprises a motor (111) fixed on a bracket (7); a screw rod (112) is installed at the output end of the motor (111); a first threaded sleeve (113) and a second threaded sleeve (114) are threadedly connected on the screw rod (112); the bottom of the auxiliary heating device (10) is fixedly connected to the first threaded sleeve (113); and the rectangular pressing plate (9) is fixedly connected to the second threaded sleeve (114).

7. The forging die of a stainless steel forging for liquid hydrogen storage according to claim 6, characterized in that: The bottom of the first threaded sleeve (113) is smooth, and the bottom of the first threaded sleeve (113) is in contact with the surface of the bracket (7) and is slidably connected thereto.

8. The forging die of a stainless steel forging for liquid hydrogen storage according to claim 1, characterized in that: The inner dimensions of the upper die groove (4) and the half lower die groove (3) are adapted to each other. The upper die groove (4) and the half lower die groove (3) are respectively clamped at the top and bottom of the forging. An auxiliary lifting mechanism (14) is also provided at the top of the upper die groove (4). The auxiliary lifting mechanism (14) comprises a plurality of limit slots (141) provided at the top of the upper die groove (4). A limit push rod (142) is movably inserted in the limit slots (141). An electric push rod (143) is installed at the center of the top of the upper die groove (4). The electric push rod (143) is provided at the top of the upper die groove (4). A plurality of hinged plates (144) are hingedly installed at the top of the upper mold groove (143), and the other end of the hinged plate (144) is hinged to the top of the limiting push rod (142). A rectangular slide groove (145) is fixedly installed at the bottom of the hinged plate (144), and a rectangular slider (147) is movably connected inside the rectangular slide groove (145). A telescopic rod (146) is fixed at the top of the upper mold groove (4) and located between the limiting through groove (141) and the electric push rod (143), and the top of the telescopic rod (146) is fixedly connected to the rectangular slider (147).

9. The forging die of a stainless steel forging for liquid hydrogen storage according to claim 1, characterized in that: The second elastic component (12) comprises a second lifting plate (121) inside the upper die groove (4), and second springs (122) are respectively fixed between the top four corners of the second lifting plate (121) and the inner wall of the upper die groove (4).

10. A method for manufacturing a forging die for a stainless steel forging for liquid hydrogen storage as claimed in any one of claims 1 to 9, characterized in that: The specific steps include: S1. Start the electric telescopic rod (61) to move and extend to drive the two groups of half lower mold grooves (3) to move and dock, and lock and fix the half lower mold grooves (3) through the movable plate (62), and use the moving mechanism (11) to drive the rectangular pressing plate (9) to move to the inside of the rectangular groove (32) to press the first lifting plate (81) inside the half lower mold groove (3) to make the bottom wall inside the half lower mold groove (3) flat; S2. Place the formed intermediate forging inside the half lower die groove (3), start the hydraulic rod (5) to drive the upper die groove (4) to move down to the top of the half lower die groove (3), and perform die casting forging on the forging inside the half lower die groove (3); S3. After the forging is completed, the hydraulic rod (5) is started to drive the upper die groove (4) to move upward, and the second lifting plate (121) is ejected by the elastic force of the second spring (122) so that the top of the forging is naturally separated from the upper die groove (4), and the electric push rod (143) is started to drive one end of the hinge plate (144) to tilt up, thereby driving the other end of the hinge plate (144) to move downward, and then driving the limiting push rod (142) to move up and down in the limiting through groove (141), and the limiting push rod (142) is used to move the second lifting plate (121) downward to assist in separating the top of the forging from the upper die groove (4); S4. Using the moving mechanism (11) to drive the rectangular pressing plate (9) to move and pull the rectangular pressing plate (9) out from the inner side of the rectangular groove (32), using the elastic force of the first spring (83) to lift the hinge rod (82) so as to use the first lifting plate (81) to detach the bottom of the forging; S5. Start the electric telescopic rod (61) to extend and retract, driving the two sets of half lower die grooves (3) to separate, take out the forging and complete demoulding.

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