Aluminum alloy superplastic forming equipment

Abstract

The invention discloses aluminum alloy superplastic forming equipment, and relates to the technical field of superplastic forming. According to the aluminum alloy superplastic forming equipment, through the arrangement of the heat energy circulating device, when the mold assembling box moves downwards, hot air in the heat energy circulating device can be conveyed to a heating cavity through a gas conveying pipe; when the mold assembly box moves upwards, the hot air in the heating cavity can be pressed to enter the heat energy circulating device and enter the mold assembly box through a telescopic corrugated pipe, and the mold assembly box is heated to be in a closed state through the telescopic corrugated pipe. The die and the to-be-formed plate are preheated, energy is saved, meanwhile, the heating and cooling effects of equipment are effectively improved, and the operation efficiency of the equipment is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of superplastic forming, in particular to aluminum alloy superplastic forming equipment. Background Art

[0002] The superplastic forming equipment for special-shaped alloy parts is an advanced processing technology device. It utilizes the superplasticity of materials under specific temperature and pressure, and precisely controls environmental conditions and forming speed. Referring to the Chinese patent, the announcement number is "CN118385357B" "A superplastic forming equipment for special-shaped alloy parts". The patent points out that when the workpiece is superplasticly formed, the inert gas in the mold cavity of the lower mold will be directly discharged and cannot be recycled, resulting in a certain amount of waste; at present, since the injection molding alloy has low requirements for gas, most existing companies will replace the inert gas with compressed air to reduce production costs; the equipment still has the problem of poor heat recovery effect, which wastes energy and affects the forming efficiency and forming effect of the workpiece. In this regard, we propose an aluminum alloy superplastic forming equipment to solve the above problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an aluminum alloy superplastic forming device, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an aluminum alloy superplastic forming device, comprising a machine body, a heating system and a cooling system are respectively provided inside the machine body, a mold assembly box is slidably installed up and down inside the machine body, and positioning frames are provided on both sides of the mold assembly box for clamping and positioning the sheet to be formed;

[0005] An upper insulation plate is fixed on the upper side of the machine body, which is used to seal the mold assembly box when it moves upward. An air compressor is installed inside the machine body, which is used to deliver high-pressure gas to the inside of the mold assembly box, so that the heated sheet to be formed is pressurized and formed;

[0006] A heat circulation component is provided inside the machine body, which is used to deliver high-temperature gas to the inside of the mold assembly box when the mold assembly box moves upward, perform preset treatment on the mold and the sheet to be formed, and when the mold assembly box moves downward after the workpiece is formed, the gas inside the mold assembly box is extracted in the form of negative pressure, and the speed at which external air enters the mold assembly box is accelerated;

[0007] The heat circulation component includes a heat energy circulation device, which is fixed inside the machine body. A heat conduction coil is installed inside the heat energy circulation device. A plurality of heat conduction ends are fixed to the outside of the heat conduction coil. The ends of the heat conduction ends all pass through the heat energy circulation device and extend to the heating chamber. A gas delivery pipe is connected between the heat energy circulation device and the heating chamber, and a telescopic bellows is connected between the heat energy circulation device and the mold assembly box.

[0008] Preferably, a control panel is fixedly mounted on the outer side of the machine body, and a connecting end pipe is fixed on the top surface of the mold assembly box, and the connecting end pipe is used to communicate with the air compressor when the mold assembly box moves up to the heating chamber.

[0009] Preferably, a heat insulating member is provided between the heating system and the cooling system, and a sealing insulation layer is fixedly installed on the upper and lower sides of the mold assembly box, and the sealing insulation layer is used to contact the heat insulating member to block the heating system and the cooling system.

[0010] Preferably, a pressure plate is slidably disposed inside the positioning frame and telescopic pressure rods are installed on both sides of the top surface of the pressure plate. The telescopic pressure rods have built-in springs that can apply pressure to the pressure plate as the mold assembly box moves upward, thereby clamping the sheet to be formed.

[0011] Preferably, a hydraulic cylinder is fixedly installed on the inner top surface of the machine body, and the piston end of the hydraulic cylinder is fixedly connected to the mold assembly box, which is used to drive the mold assembly box to slide up and down inside the machine body. Slide rods are fixed on both sides of the top surface of the mold assembly box, and the slide rods are slidably assembled inside the machine body.

[0012] Preferably, positioning bolts are provided around the interior of the upper insulation board, and a sealing plate is installed on the inner side of the upper insulation board. The sealing plate is used to contact the side of the mold assembly box when the mold assembly box moves upward to seal the mold assembly box.

[0013] Preferably, an arc-shaped groove is opened inside the upper insulation plate, and a rotating shaft is rotatably connected inside the arc-shaped groove, and a plurality of right-angle transmission frames are fixed on the outside of the rotating shaft, and the sealing plate is fixedly installed on the outside of the plurality of right-angle transmission frames, and both ends of the rotating shaft are sleeved with return springs.

[0014] Preferably, an inner sealing plate is slidably installed inside the sealing plate, and a connecting component is provided between the inner sealing plate and the mold assembly box, which can drive the inner sealing plate to slide downward when the mold assembly box moves downward.

[0015] Preferably, the connecting component includes a locking block, a limiting rod is rotatably installed on the bottom of the inner sealing plate, there are multiple locking blocks and they are respectively fixed on the bottom of the limiting rod, a locking groove is opened inside the locking block, and the bottom of the locking block is opened as an arc surface, and a locking card plate adapted to the locking groove is fixedly installed on the outside of the mold assembly box.

[0016] Preferably, springs are sleeved on both ends of the limit rod to drive the limit rod to rotate and reset.

[0017] The present invention provides an aluminum alloy superplastic forming device. Compared with the prior art, it has the following beneficial effects:

[0018] (1) The aluminum alloy superplastic forming equipment, through the setting of the thermal energy circulation device, can make the hot air inside the thermal energy circulation device be transported to the heating chamber through the gas conveying pipe when the mold assembly box moves downward, so that the hot air inside the mold assembly box enters the thermal energy circulation device at a faster speed than the speed of the external air entering the mold assembly box. When the mold assembly box moves upward, the hot air inside the heating chamber can be pressed into the thermal energy circulation device and enter the mold assembly box through the telescopic bellows, so as to achieve preheating treatment of the mold and the plate to be formed, save energy and effectively improve the heating and cooling effects of the equipment, and further improve the operation efficiency of the equipment.

[0019] (2) The aluminum alloy superplastic forming equipment, through the setting of a right-angle transmission frame, can make the right-angle transmission frame rotate along the rotating shaft under pressure when the mold assembly box moves up and contacts therewith, exerting pressure on the sealing plate, further improving the sealing between the sealing plate and the mold assembly box, and effectively avoiding gas leakage when compressed air is injected, thereby ensuring the forming effect of the workpiece, and the inner sealing plate can slide downward with the mold assembly box to form a barrier to ensure the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-section structure;

[0022] Figure 3 It is a schematic cross-sectional view of the structure of the mold assembly box of the present invention;

[0023] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0024] Figure 5 For the present invention Figure 3 Sectional front view;

[0025] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0026] Figure 7 It is a schematic diagram of the explosion structure of the upper insulation plate, the sealing plate and the inner sealing plate of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point C in the middle.

[0028] In the figure: 1. machine body; 101. control panel; 102. heating system; 103. cooling system; 2. mold assembly box; 201. connecting end pipe; 3. positioning frame; 301. telescopic pressure rod; 4. upper insulation board; 401. positioning bolt; 402. arc notch; 5. hydraulic cylinder; 6. slide bar; 7. air compressor; 8. thermal energy circulation device; 801. gas delivery pipe; 802. telescopic bellows; 9. heat transfer coil; 901. heat transfer end head; 10. thermal insulation component; 11. sealing insulation layer board; 12. sealing plate; 1201. inner sealing plate; 1202. limiting rod; 1203. locking block; 1204. locking notch; 1205. arc surface; 1206. locking card board; 13. right-angle transmission frame; 14. rotating shaft; 1401. reset spring. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-Figure 8 The present invention provides two technical solutions, which specifically include the following embodiments:

[0031] Embodiment 1:

[0032] In the embodiment of the present invention, in the embodiment of the present invention, reference is made to Figure 1-Figure 8 , an aluminum alloy superplastic forming device, comprising a machine body 1, a heating system 102 and a cooling system 103 are respectively arranged inside the machine body 1, a mold assembly box 2 is slidably installed up and down inside the machine body 1, and positioning frames 3 are arranged on both sides of the mold assembly box 2 for clamping and positioning the sheet to be formed. After the mold is assembled into the mold assembly box 2, the sheet to be formed is installed on the positioning frame 3, and then heating and forming operations are performed;

[0033] Specifically, the interior of the machine body 1 is divided into a heating chamber and a cooling chamber, the heating system 102 is installed in the heating chamber, and the cooling system 103 is installed in the cooling chamber. The heating system 102 and the cooling system 103 are both existing devices for realizing heating and cooling operations on the workpiece;

[0034] In the embodiment of the present invention, further, an upper insulation plate 4 is fixed on the upper side of the machine body 1, which is used to seal the mold assembly box 2 when it moves upward, and an air compressor 7 is installed inside the machine body 1, which is used to deliver high-pressure gas to the inside of the mold assembly box 2, so that the heated sheet to be formed is pressurized and formed. When the mold assembly box 2 moves upward to drive the internal mold and the sheet to be formed to move to the heating chamber, the internal sheet to be formed can be heated by the operation of the heating system 102, and then the mold assembly box 2 is filled with high-pressure gas through the air compressor 7, so that the heated sheet is pressurized and formed;

[0035] In the embodiment of the present invention, specifically, the air compressor 7 is an existing device, which is used to deliver high-pressure air to the inside of the mold assembly box 2, so that the heated plate is pressed and in contact with the mold until it is formed;

[0036] In the embodiment of the present invention, specifically, the mold is an existing forming mold, which can be replaced according to different needs;

[0037] In the embodiment of the present invention, further, a heat circulation component is provided inside the machine body 1, which is used to convey high-temperature gas to the inside of the mold assembly box 2 when the mold assembly box 2 moves up, perform preset treatment on the mold and the sheet to be formed, and when the mold assembly box 2 moves down after the workpiece is formed, the gas inside the mold assembly box 2 is extracted in the form of negative pressure, and the speed at which the external air enters the inside of the mold assembly box 2 is accelerated; the heat circulation component includes a heat energy circulation device 8, the heat energy circulation device 8 is fixed inside the machine body 1, a heat conduction coil 9 is installed inside the heat energy circulation device 8, a plurality of heat conduction terminals 901 are fixed on the outside of the heat conduction coil 9, the ends of the heat conduction terminals 901 all pass through the heat energy circulation device 8 and extend to the heating chamber, a gas conveying pipe 801 is connected between the heat energy circulation device 8 and the heating chamber, and a telescopic bellows 802 is connected between the heat energy circulation device 8 and the mold assembly box 2;

[0038] In the embodiment of the present invention, specifically, when the heating process is carried out inside the heating chamber, the heat can be introduced into the heat energy circulation device 8 through the cooperation of the heat conduction coil 9 and the plurality of heat conduction terminals 901. After the sheet is formed, the mold assembly box 2 needs to be moved down to cool the sheet, and then the formed workpiece is taken out. When the mold assembly box 2 is moved down, the pressure inside the heating chamber changes, and the hot air inside the heat energy circulation device 8 can be transported to the heating chamber through the gas delivery pipe 801. At the same time, the hot air inside the mold assembly box 2 can be transported to the heat energy circulation device 8 through the telescopic bellows 802 to complete the heat circulation. At this time, the external cold air can quickly enter the cooling chamber, and then the workpiece is quickly cooled by the operation of the cooling system 103.

[0039] In the embodiment of the present invention, further, when the workpiece is taken out and the second forming operation is performed, as the sheet to be formed is installed on the positioning frame 3, the mold assembly box 2 moves up and enters the heating chamber. At this time, the hot air inside the heating chamber can be pressurized to enter the heat energy circulation device 8 through the gas delivery pipe 801, so that the hot air inside the heat energy circulation device 8 can enter the inside through the telescopic bellows 802 as the mold assembly box 2 moves up, and the mold and the sheet to be formed are preheated. After the mold assembly box 2 reaches the heating chamber and completes insulation through the upper insulation board 4, the heating system 102 is operated to realize the heating operation;

[0040] In the embodiment of the present invention, specifically, solenoid valves are provided inside the gas delivery pipe 801 and the telescopic bellows 802 to control the opening and closing of the gas delivery pipe 801 and the telescopic bellows 802;

[0041] In the embodiment of the present invention, further, a control panel 101 is fixedly installed on the outer side of the machine body 1, and a connecting end pipe 201 is fixed on the top surface of the mold assembly box 2. The connecting end pipe 201 is used to communicate with the air compressor 7 when the mold assembly box 2 moves up to the heating chamber. The control panel 101 is controlled based on the existing PLC control module. A plug adapted to the connecting end pipe 201 is provided at the bottom of the air compressor 7, which is used to connect the air compressor 7 with the mold assembly box 2 when the mold assembly box 2 moves up, so as to realize the gas delivery operation;

[0042] In the embodiment of the present invention, further, a heat insulating member 10 is provided between the heating system 102 and the cooling system 103, and sealing insulation layers 11 are fixedly installed on the upper and lower sides of the mold assembly box 2, and the sealing insulation layers 11 are used to contact with the heat insulating member 10 to block the heating system 102 and the cooling system 103. When the mold assembly box 2 moves up to the heating chamber, the sealing insulation layers 11 at the bottom thereof can contact with the heat insulating member 10 to ensure the sealing of the heating system 102 during operation. When the mold assembly box 2 moves down to the cooling chamber, the sealing insulation layers 11 above it can contact with the heat insulating member 10 to ensure the sealing of the cooling system 103 during operation.

[0043] In the embodiment of the present invention, further, a pressure plate is slidably provided inside the positioning frame 3 and telescopic pressure rods 301 are installed on both sides of the top surface of the pressure plate. The telescopic pressure rods 301 are equipped with springs, which can apply pressure to the pressure plate as the mold assembly box 2 moves upward to clamp the sheet to be formed. The pressure plate is not shown in the figure. When the sheet to be formed is placed inside the positioning frame 3, the telescopic pressure rods 301 can be pressed as the mold assembly box 2 moves upward. At this time, the pressure plate can slide downward to contact the sheet to be formed until the mold assembly box 2 moves upward to the heating chamber, and the sheet to be formed can be locked by the pressure plate.

[0044] In the embodiment of the present invention, specifically, a hydraulic cylinder 5 is fixedly installed on the inner top surface of the machine body 1, and the piston end of the hydraulic cylinder 5 is fixedly connected to the mold assembly box 2, which is used to drive the mold assembly box 2 to slide up and down inside the machine body 1. Slide rods 6 are fixed on both sides of the top surface of the mold assembly box 2, and the slide rods 6 are slidably assembled inside the machine body 1. The hydraulic cylinder 5 is an existing device, which is used to realize the driving operation, and the slide rods 6 are used to ensure the operation stability of the mold assembly box 2;

[0045] In the embodiment of the present invention, specifically, positioning bolts 401 are provided around the inner periphery of the upper insulation board 4, and a sealing plate 12 is installed on the inner side of the upper insulation board 4. The sealing plate 12 is used to contact the side of the mold assembly box 2 when the mold assembly box 2 moves upward to seal the mold assembly box 2;

[0046] In the embodiment of the present invention, further, an arc-shaped groove 402 is opened inside the upper insulation plate 4, and the inside of the arc-shaped groove 402 is rotatably connected to the rotating shaft 14, and a plurality of right-angle transmission frames 13 are fixed on the outside of the rotating shaft 14, and the sealing plate 12 is fixedly installed on the outside of the plurality of right-angle transmission frames 13, and both ends of the rotating shaft 14 are sleeved with return springs 1401. When the mold assembly box 2 moves up to the heating chamber and contacts the right-angle transmission frame 13, the right-angle transmission frame 13 can be pressed to rotate along the rotating shaft 14, exerting pressure on the sealing plate 12, thereby further improving the sealing between the sealing plate 12 and the mold assembly box 2, effectively avoiding gas leakage when compressed air is injected, and ensuring the workpiece forming effect.

[0047] Embodiment 2, based on embodiment 1, further, an inner sealing plate 1201 is installed inside the sealing plate 12 so as to slide up and down, and a connection component is provided between the inner sealing plate 1201 and the mold assembly box 2, which can drive the inner sealing plate 1201 to slide downward at the same time when the mold assembly box 2 moves downward. When the mold assembly box 2 moves downward after the workpiece is formed, the temperature inside the mold assembly box 2 is too high at this time, and the inner sealing plate 1201 moves downward with the mold assembly box 2 to achieve isolation, which can improve the operation safety of the equipment;

[0048] In the embodiment of the present invention, specifically, the connection component includes a locking block 1203, a limiting rod 1202 is rotatably installed at the bottom of the inner sealing plate 1201, a plurality of locking blocks 1203 are respectively fixed at the bottom of the limiting rod 1202, a locking notch 1204 is provided inside the locking block 1203, and the bottom of the locking block 1203 is provided with an arc surface 1205, a locking card plate 1206 adapted to the locking notch 1204 is fixedly installed on the outer side of the mold assembly box 2, and springs are sleeved at both ends of the limiting rod 1202 to drive the limiting rod 1202 to rotate and reset;

[0049] In the embodiment of the present invention, specifically, when the mold assembly box 2 moves up to the heating chamber position, it can drive the locking card plate 1206 to move up and contact the curved surface 1205, so that the locking block 1203 drives the limit rod 1202 to rotate, and locks the locking card plate 1206 through the locking groove 1204. When the mold assembly box 2 moves down, it can drive the inner sealing plate 1201 to slide down to achieve protection, until the inner sealing plate 1201 is opened after cooling is completed, and the workpiece is taken out.

[0050] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0051] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An aluminum alloy superplastic forming device, comprising a machine body (1), wherein a heating system (102) and a cooling system (103) are respectively arranged inside the machine body (1), characterized in that: A mold assembly box (2) is installed inside the machine body (1) so as to slide up and down, and positioning frames (3) are provided on both sides of the mold assembly box (2) for clamping and positioning the sheet material to be formed; An upper insulation plate (4) is fixed above the side of the machine body (1) for sealing the mold assembly box (2) when it moves upwards. An air compressor (7) is installed inside the machine body (1) for delivering high-pressure gas to the inside of the mold assembly box (2) so that the heated sheet material to be formed is pressurized and formed. The body (1) is provided with a heat circulation component inside, which is used to convey high-temperature gas into the mold assembly box (2) when the mold assembly box (2) moves upward, and perform preset treatment on the mold and the plate to be formed; when the mold assembly box (2) moves downward after the workpiece is formed, the gas inside the mold assembly box (2) is extracted in the form of negative pressure, and the speed at which external air enters the mold assembly box (2) is accelerated; The heat circulation assembly comprises a heat energy circulation device (8), the heat energy circulation device (8) is fixed inside the machine body (1), a heat conduction coil (9) is installed inside the heat energy circulation device (8), a plurality of heat conduction ends (901) are fixed on the outside of the heat conduction coil (9), the ends of the heat conduction ends (901) all pass through the heat energy circulation device (8) and extend to the heating chamber, a gas delivery pipe (801) is connected between the heat energy circulation device (8) and the heating chamber, and a telescopic bellows (802) is connected between the heat energy circulation device (8) and the mold assembly box (2).

2. The aluminum alloy superplastic forming equipment according to claim 1, characterized in that: A control panel (101) is fixedly mounted on the outer side of the machine body (1), and a connecting end pipe (201) is fixed on the top surface of the mold assembly box (2). The connecting end pipe (201) is used to communicate with the air compressor (7) when the mold assembly box (2) moves up to the heating chamber.

3. The aluminum alloy superplastic forming equipment according to claim 1, characterized in that: A heat insulating member (10) is provided between the heating system (102) and the cooling system (103), and a sealing heat-insulating layer plate (11) is fixedly installed on both the upper and lower sides of the mold assembly box (2), and the sealing heat-insulating layer plate (11) is used to contact the heat insulating member (10) to block the heating system (102) and the cooling system (103).

4. The aluminum alloy superplastic forming equipment according to claim 1, characterized in that: A pressure plate is slidably disposed inside the positioning frame (3) and telescopic pressure rods (301) are installed on both sides of the top surface of the pressure plate. The telescopic pressure rods (301) are built with springs and can apply pressure to the pressure plate as the mold assembly box (2) moves upward, thereby clamping the sheet material to be formed.

5. The aluminum alloy superplastic forming equipment according to claim 1, characterized in that: A hydraulic cylinder (5) is fixedly mounted on the inner top surface of the machine body (1), and a piston end of the hydraulic cylinder (5) is fixedly connected to the mold assembly box (2) for driving the mold assembly box (2) to slide up and down inside the machine body (1). Slide rods (6) are fixed on both sides of the top surface of the mold assembly box (2), and the slide rods (6) are slidably assembled inside the machine body (1).

6. The aluminum alloy superplastic forming equipment according to claim 1, characterized in that: Positioning bolts (401) are arranged around the interior of the upper insulation board (4), and a sealing plate (12) is installed on the inner side of the upper insulation board (4). The sealing plate (12) is used to contact the side of the mold assembly box (2) when the mold assembly box (2) moves upward, so as to seal the mold assembly box (2).

7. The aluminum alloy superplastic forming equipment according to claim 6, characterized in that: The upper insulation plate (4) is provided with an arc-shaped notch (402) inside, the arc-shaped notch (402) is rotatably connected to a rotating shaft (14), and a plurality of right-angle transmission frames (13) are fixed to the outside of the rotating shaft (14), the sealing plate (12) is fixedly mounted on the outside of the plurality of right-angle transmission frames (13), and both ends of the rotating shaft (14) are sleeved with return springs (1401).

8. The aluminum alloy superplastic forming equipment according to claim 7, characterized in that: An inner sealing plate (1201) is installed inside the sealing plate (12) so as to slide up and down, and a connection component is provided between the inner sealing plate (1201) and the mold assembly box (2), so as to drive the inner sealing plate (1201) to slide downward simultaneously when the mold assembly box (2) moves downward.

9. The aluminum alloy superplastic forming equipment according to claim 8, characterized in that: The connection component comprises a locking block (1203), a limiting rod (1202) is rotatably installed at the bottom of the inner sealing plate (1201), there are multiple locking blocks (1203) and they are respectively fixed at the bottom of the limiting rod (1202), a locking notch (1204) is provided inside the locking block (1203), and the bottom of the locking block (1203) is provided with an arc surface (1205), and a locking card plate (1206) adapted to the locking notch (1204) is fixedly installed on the outside of the mold assembly box (2).

10. The aluminum alloy superplastic forming equipment according to claim 8, characterized in that: Both ends of the limiting rod (1202) are sleeved with springs for driving the limiting rod (1202) to rotate and reset.

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