Die for forging 7-series aluminum alloy and using method of die

Abstract

The invention relates to the technical field of aluminum alloy forging, and discloses a 7-series aluminum alloy forging mold and a using method thereof.The 7-series aluminum alloy forging mold comprises a demolding mechanism, the demolding mechanism further comprises a lower mold, an upper mold is arranged at the top of the lower mold, a forming plate is slidably connected to the inner wall of the lower mold, a punching machine is started to stretch out, the upper mold is pushed to descend, and the upper mold is pressed down; then, the punching machine is retracted, the punching machine is driven to ascend, the connecting rod is driven to descend, the connecting rod pushes the connecting rod to rotate, the inclined plane blocks are pulled to move until the inclined plane blocks are separated from the forming plate, the upper die is attached to the lower die, and forging of the aluminum alloy is completed; and then, the punching machine is retracted, the punching machine is driven to ascend, and the connecting rod is pulled to ascend, so that the two inclined plane blocks move towards the forming plate. And the inclined plane block is in contact with the forming plate to jack up the forming plate, so that the aluminum alloy is driven to slowly rise, the adhesive force of the aluminum alloy and the lower mold is slowly separated, the aluminum alloy can be gradually separated from the mold, impact generated during demolding is reduced, and it is ensured that the aluminum alloy can be smoothly demolded.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy forging equipment, and specifically relates to a mold for forging 7-series aluminum alloy and its usage method. Background Technique

[0002] 7-series aluminum alloy is a type in the aluminum alloy series, mainly composed of aluminum and zinc as the main alloying elements. Aluminum alloys in this series are widely used in the fields of aviation, aerospace, military, automotive, shipbuilding, etc. due to their high strength. In order to improve the strength of 7-series aluminum alloy, forging is usually required. Forging is a processing method that uses forging machinery to apply pressure to metal blanks, causing them to undergo plastic deformation to obtain forgings with certain mechanical properties, certain shapes, and sizes. Among them, forging also includes die forging, and die forging is further divided into open die forging and closed die forging. The metal blank is pressured and deformed in a forging die cavity with a certain shape to obtain a forging. Die forging is generally used for producing parts with small weights and large batches. Die forging can be divided into hot die forging, warm forging, and cold forging.

[0003] Among them, when demolding after the forging of 7-series aluminum alloy is completed, the aluminum alloy is often ejected by a spring push rod. However, when forging aluminum alloy, the aluminum alloy usually needs to be heated. During the forging process, the surface of the heated aluminum alloy is prone to adhere to the surface of the mold. Due to the relatively fast release speed of the spring's resilience, a large impact force will be generated, resulting in a relatively fast demolding speed of the aluminum alloy. The adhesion force between the aluminum alloy and the mold may not be completely released, which may cause scratches and unevenness on the surface of the forging, affecting the appearance and quality of the forging. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a mold for forging 7-series aluminum alloy, including a demolding mechanism. The demolding mechanism further includes a lower mold, an upper mold is arranged on the top of the lower mold, and a forming plate is slidably connected to the inner wall of the lower mold;

[0005] A jetting mechanism, the jetting mechanism includes a sliding groove opened on the inner wall of the forming plate, a fixing plate is slidably connected to the inner wall of the sliding groove, and six air delivery pipes are connected through the inner wall of the forming plate;

[0006] A blocking mechanism, the blocking mechanism includes a second fixing ring fixedly connected to the inner wall of the air delivery pipe. Six placing grooves are opened on the inner walls of the six second fixing rings, and spring pressing blocks are slidably connected to the inner walls of the thirty-six placing grooves.

[0007] Preferably, the demolding mechanism further includes four first fixing rods fixedly connected to the top of the lower mold. The outer walls of the four first fixing rods are slidably connected to the inner wall of the upper mold. A punching machine is fixedly connected to the outer walls of the four first fixing rods. The bottom output end of the punching machine is fixedly connected to the top of the upper mold. Connecting rods are fixedly connected to both the left and right sides of the upper mold.

[0008] Preferably, the demolding mechanism further includes two inclined plane blocks slidably connected to the top of the lower mold. Connecting rods are rotatably connected to the side walls of the two inclined plane blocks. The bottoms of the two connecting rods are rotatably connected to the inner walls of the connecting rods. Two jacking rods are slidably connected to the inner wall of the forming plate. Return springs are sleeved on the outer walls of the two jacking rods. The staff places the heated aluminum alloy on the forming plate, then starts the punching machine to extend, pushes the upper mold down, drives the connecting rod down, makes the connecting rod push the connecting rod to rotate, makes the connecting rod push the inclined plane block to move, and makes the two inclined plane blocks move away from each other until the inclined plane block is separated from the forming plate. At this time, the forming plate will descend until the upper mold fits with the lower mold to complete the forging of the aluminum alloy. Then, retract the punching machine, drive the punching machine to rise, make the connecting rod rise, and pull the connecting rod up.

[0009] Preferably, the air jetting mechanism further includes a second fixing rod fixedly connected to the inner wall of the lower mold. The top of the second fixing rod is fixedly connected to the bottom of the fixing plate. The outer wall of the second fixing rod is slidably connected to the inner wall of the forming plate. Six fixing frames are fixedly connected to the inner wall of the sliding groove;

[0010] Among them, a seesaw is rotatably connected to the outer walls of the six fixing frames. Sliding rods are slidably connected to the inner walls of the six air pipes. Blocking frames are fixedly connected to the inner walls of the six air pipes. The inner wall of the fixing plate is slidably connected to the outer wall of the air pipe.

[0011] Preferably, the air jetting mechanism further includes four blocking frames slidably connected to the inner wall of the air pipe. Connecting plates are fixedly connected to the bottoms of the twenty-four blocking frames. Four rotating frames are provided on the inner walls of the six air pipes. Four third fixing rods are fixedly connected to the inner walls of the six air pipes;

[0012] Among them, the inner walls of the twenty-four rotating frames are rotatably connected to the outer walls of the third fixing rods. The inner walls of the twenty-four rotating frames are slidably connected to the bottoms of the connecting plates. When the forming plate rises, since the fixing plate is in a stationary state, the fixing plate will squeeze the gas in the sliding groove, and the squeezed gas will enter the air pipe. Since the blocking frame and the blocking frame are flush with the top of the forming plate, and there is aluminum alloy on the top of the forming plate, the gas will be blocked by the blocking frame and the blocking frame, causing the gas to generate high pressure. As the forming plate continues to move, one side of the seesaw will contact the convex block at the bottom of the fixing plate, causing the fixing frame to rotate, and the other side will rise, pushing the sliding rod up.

[0013] Preferably, the jet mechanism further includes two first fixing rings fixedly connected to the inner wall of the sliding groove. The inner walls of the six blocking frames are all slidably connected with spring return rods. Two spring blocking plates are placed on the inner wall of the sliding groove. The outer walls of the two spring blocking plates are slidably connected to the inner walls of the first fixing rings. Then it will push the rotating frame to rise, squeeze the spring return rods, so that the spring return rods accumulate elastic force. At the same time, it will make the rotating frame rotate, pull the connecting plate to descend, drive the blocking frame to descend, and create a gap between the blocking frame and the blocking frame.

[0014] Preferably, the blocking mechanism further includes a support ring fixedly connected to the outer wall of the sliding rod. Six blocking rings are slidably connected to the outer walls of the six sliding rods. Three fixing blocks are fixedly connected to the outer walls of the six sliding rods. The inner walls of the eighteen fixing blocks are slidably connected with spring pressing rods. When the sliding rod rises, it will also drive the support ring to rise. The support ring will drive the blocking ring to approach the second fixing ring. Since the aluminum alloy has been separated from the lower mold when it is lifted by the forming plate, a gap will be formed between the aluminum alloy and the side wall of the lower mold. When the high-pressure gas separates the bottom of the aluminum alloy from the forming plate, the gas will quickly discharge from the gap between the aluminum alloy and the side wall of the lower mold. When the flowing gas jets outwards and passes through the second fixing ring, it will adsorb the blocking ring. Part of the gas will also pass through the bottom of the blocking ring, thereby applying a thrust to make the blocking ring move towards the second fixing ring until the blocking ring contacts the second fixing ring and blocks the second fixing ring to reduce the gas discharge.

[0015] A method for using a mold for forging 7-series aluminum alloy includes the following steps:

[0016] S1: Lifting and demolding twice;

[0017] S2: Gas demolding;

[0018] S3: Blocking gas.

[0019] The present invention has the following beneficial effects:

[0020] (1) When the present invention is in use, the staff places the heated aluminum alloy on the forming plate, and then starts the stamping machine to extend, pushing the upper die downward, driving the connecting rod downward, making the connecting rod push the link to rotate, so that the link pushes the inclined block to move, causing the two inclined blocks to move away from each other until the inclined block is separated from the forming plate. At this time, the forming plate will descend until the upper die fits with the lower die, completing the forging of the aluminum alloy. Then, retract the stamping machine, driving the stamping machine to rise, making the connecting rod rise, pulling the link to rise, so that the two inclined blocks move towards the forming plate until the inclined block contacts the forming plate. Since the contact surfaces of both are inclined planes, the inclined block will smoothly lift the forming plate, thus driving the aluminum alloy to rise slowly, separating the adhesion force between the aluminum alloy and the lower die slowly. After the forming plate is lifted, the inclined block will continue to move and will contact the jacking rod. Since the contact surfaces of both are inclined planes, the inclined block will lift the jacking rod, squeezing the return spring, allowing the return spring to accumulate resilience. After the jacking rod rises, it will lift the aluminum alloy again, separating the bottom of the aluminum alloy from the forming plate, thus lifting the formed aluminum alloy, enabling the aluminum alloy to gradually separate from the die, reducing the impact generated during demolding. At the same time, jacking the aluminum alloy twice helps to reduce the adhesion force between the aluminum alloy and the forming plate, ensuring that the aluminum alloy can be smoothly demolded.

[0021] (2) When the forming plate of the present invention rises, since the fixed plate is in a static state, the fixed plate will squeeze the gas in the sliding groove, and the squeezed gas will enter the air delivery pipe. Since the blocking frame and the blocking rack are flush with the top of the forming plate and there is aluminum alloy on the top of the forming plate, the gas will be blocked by the blocking frame and the blocking rack, generating high pressure. As the forming plate continues to move, one side of the seesaw will contact the convex block at the bottom of the fixed plate, making the fixed frame rotate, the other side rise, pushing the sliding rod to rise. When the sliding rod rises, it will push the rotating frame to rise, squeezing the spring return rod, allowing the spring return rod to accumulate resilience. At the same time, making the rotating frame rotate, pulling the connecting plate to descend, driving the blocking frame to descend, creating a gap between the blocking frame and the blocking rack, as Figure VI shown. The high-pressure gas will spray out from the gap towards the bottom of the aluminum alloy. Through the gas isolation effect, it is avoided that the aluminum alloy is often the closest to the forming plate during the forging process, resulting in a strong adhesion force between the two, thus eliminating the strong surface adhesion between the aluminum alloy and the forming plate, ensuring that the aluminum alloy can be smoothly separated during demolding.

[0022] (3) When the sliding rod rises in the present invention, it will also drive the support ring to rise, and the support ring will drive the blocking ring closer to the second fixed ring. Since the aluminum alloy has been separated from the lower mold when it is lifted by the forming plate, a gap will be formed between the aluminum alloy and the side wall of the lower mold. When the high-pressure gas separates the bottom of the aluminum alloy from the forming plate, the gas will quickly discharge from the gap between the aluminum alloy and the side wall of the lower mold. When the flowing gas sprays outwards and passes through the second fixed ring, it will form an adsorption force on the blocking ring. Some gas will also pass through the bottom of the blocking ring, thereby applying a thrust force to move the blocking ring towards the second fixed ring until the blocking ring contacts the second fixed ring and blocks the second fixed ring to reduce the gas discharge. At this time, the high-pressure gas will push the bottom of the blocking ring and lift the blocking ring to make the blocking ring fully fit with the second fixed ring to block the second fixed ring. At the same time, the blocking ring will contact the spring pressing block. Since the contact surfaces of both are inclined planes, the blocking ring will smoothly squeeze the spring pressing block. Through the resilience of the spring pressing block, the outer wall of the blocking ring is fixed to fix the blocking ring. By blocking the second fixed ring, it effectively prevents the adhesion degree of the aluminum alloy and the forming plate from being inconsistent in various places. After the gas outlet pipe in the area with lower adhesion force has completed gas discharge, the gas all flows outwards through this gas outlet pipe, reducing the gas output of other gas outlet pipes and reducing the outward thrust of the remaining gas outlet pipes.

[0023] (4) When the forming plate descends in the present invention, the rocker will separate from the convex block of the fixed plate, and the force squeezing the rocker will disappear. At this time, the resilience of the spring reset rod will be released to push the rotating frame downward, driving the sliding rod downward. During the downward movement of the sliding rod, the spring pressing rod will contact the blocking ring, causing the spring pressing rod to be squeezed. As the sliding rod continues to descend, the fixed block will contact the blocking ring, thereby driving the blocking ring to descend. At this time, the resilience of the spring pressing rod will be released to push the blocking ring to quickly descend and contact the support ring. At the same time, when the rocker is completely separated from the fixed plate, the inside of the sliding groove will be in a sealed state again. At this time, as the forming plate descends, a negative pressure will be generated at the bottom of the fixed plate, sucking up the spring blocking plate to connect the sliding groove with the outside and supplement gas; In addition: by separating the blocking ring from the second fixed ring, it is convenient for the next gas ejection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 3 This is a schematic cross-sectional view of the lower mold of the present invention;

[0028] Figure 4 This is a schematic cross-sectional view of the forming plate of the present invention;

[0029] Figure 5 This is the present invention Figure 4 An enlarged schematic view of A in;

[0030] Figure 6 This is a schematic cross-sectional view of the gas pipeline of the present invention;

[0031] Figure 7 This is a schematic cross-sectional view of the first fixing ring of the present invention;

[0032] Figure 8 This is the present invention Figure 7 An enlarged schematic view of B in

[0033] Figure 9 This is a schematic diagram of the working process of the present invention.

[0034] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0035] In the figure: 1. Demolding mechanism; 101. Lower mold; 102. Upper mold; 103. Forming plate; 104. Press; 105. First fixing rod; 106. Connecting rod; 107. Link; 108. Inclined block; 109. Jacking rod; 110. Return spring; 2. Jet mechanism; 201. Sliding groove; 202. Fixed plate; 203. Gas pipeline; 204. Second fixing rod; 205. Fixed frame; 206. Lever; 207. Sliding rod; 208. Blocking frame; 209. Blocking box; 210. Connecting plate; 211. Rotating frame; 212. Third fixing rod; 213. Spring return rod; 214. Spring blocking plate; 215. First fixing ring; 3. Blocking mechanism; 301. Second fixing ring; 302. Placing groove; 303. Spring pressing block; 304. Blocking ring; 305. Support ring; 306. Fixed block; 307. Spring extrusion rod. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Example 1, please refer to Figure 1 - Figure 4, the present invention is a mold for forging 7-series aluminum alloy, including a demolding mechanism 1. The demolding mechanism 1 further includes a lower mold 101. An upper mold 102 is arranged at the top of the lower mold 101. A forming plate 103 is slidably connected to the inner wall of the lower mold 101;

[0038] A jetting mechanism 2. The jetting mechanism 2 includes a sliding groove 201 opened at the inner wall of the forming plate 103. A fixing plate 202 is slidably connected to the inner wall of the sliding groove 201. Six air pipes 203 are connected through the inner wall of the forming plate 103;

[0039] A blocking mechanism 3. The blocking mechanism 3 includes a second fixing ring 301 fixedly connected to the inner wall of the air pipe 203. Six placing grooves 302 are respectively opened at the inner walls of the six second fixing rings 301. Spring blocks 303 are slidably connected to the inner walls of the thirty-six placing grooves 302.

[0040] The demolding mechanism 1 further includes four first fixing rods 105 fixedly connected to the top of the lower mold 101. The outer walls of the four first fixing rods 105 are slidably connected to the inner wall of the upper mold 102. A punching machine 104 is fixedly connected to the outer walls of the four first fixing rods 105. The bottom output end of the punching machine 104 is fixedly connected to the top of the upper mold 102. Connecting rods 106 are fixedly connected to both the left side and the right side of the upper mold 102.

[0041] The demolding mechanism 1 further includes two inclined blocks 108 slidably connected to the top of the lower mold 101. Link rods 107 are rotatably connected to the side walls of the two inclined blocks 108. The bottoms of the two connecting rods 106 are rotatably connected to the inner walls of the link rods 107. Two jacking rods 109 are slidably connected to the inner wall of the forming plate 103. A return spring 110 is sleeved on the outer walls of the two jacking rods 109. The staff places the heated aluminum alloy on the forming plate 103, then starts the stamping machine 104 to extend, pushing the upper mold 102 down, driving the connecting rod 106 down, causing the connecting rod 106 to push the link rod 107 to rotate, making the link rod 107 push the inclined block 108 to move, and making the two inclined blocks 108 move away from each other until the inclined block 108 is separated from the forming plate 103. At this time, the forming plate 103 will descend until the upper mold 102 is in contact with the lower mold 101, completing the forging of the aluminum alloy. Then, retract the stamping machine 104, driving the stamping machine 104 to rise, causing the connecting rod 106 to rise, pulling the link rod 107 to rise, so that the two inclined blocks 108 move towards the forming plate 103 until the inclined block 108 contacts the forming plate 103. Since the contacts between them are all inclined surfaces, the inclined block 108 will smoothly lift the forming plate 103, thus driving the aluminum alloy to rise slowly, separating the adhesion force between the aluminum alloy and the lower mold 101 slowly. After the forming plate 103 is lifted, the inclined block 108 will continue to move and will contact the jacking rod 109. Since the contact surfaces between them are all inclined surfaces, the inclined block 108 will push up the jacking rod 109, compressing the return spring 110 and allowing the return spring 110 to accumulate resilience. After the jacking rod 109 rises, it will push up the aluminum alloy again, separating the aluminum alloy from the bottom of the forming plate 103, thus lifting the formed aluminum alloy, enabling the aluminum alloy to gradually separate from the mold, reducing the impact generated during demolding. At the same time, jacking up the aluminum alloy a second time helps to reduce the adhesion force between the aluminum alloy and the forming plate, ensuring that the aluminum alloy can be smoothly demolded.

[0042] Example 2. Please refer to Figure 5 - Figure 9 , the present invention is a mold for forging 7-series aluminum alloy. On the basis of Example 1, the air jet mechanism 2 further includes a second fixing rod 204 fixedly connected to the inner wall of the lower mold 101. The top of the second fixing rod 204 is fixedly connected to the bottom of the fixing plate 202. The outer wall of the second fixing rod 204 is slidably connected to the inner wall of the forming plate 103. Six fixing frames 205 are fixedly connected to the inner wall of the sliding groove 201;

[0043] Among them, a seesaw 206 is rotatably connected to the outer walls of the six fixing frames 205. A sliding rod 207 is slidably connected to the inner walls of the six air pipes 203. A blocking frame 208 is fixedly connected to the inner walls of the six air pipes 203. The inner wall of the fixing plate 202 is slidably connected to the outer wall of the air pipe 203.

[0044] The jetting mechanism 2 further includes four blocking frames 209 slidably connected to the inner wall of the gas delivery pipe 203. A connecting plate 210 is fixedly connected to the bottom of each of the twenty-four blocking frames 209. Four rotating frames 211 are provided at the inner walls of the six gas delivery pipes 203. Four fixing rods three 212 are fixedly connected to the inner walls of the six gas delivery pipes 203.

[0045] Among them, the inner walls of the twenty-four rotating frames 211 are rotatably connected to the outer walls of the fixing rods three 212, and the inner walls of the twenty-four rotating frames 211 are slidably connected to the bottoms of the connecting plates 210. When the forming plate 103 rises, since the fixing plate 202 is in a static state, the fixing plate 202 will squeeze the gas in the sliding groove 201, and the squeezed gas will enter the gas delivery pipe 203. Since the blocking frame 208 and the blocking frame 209 are flush with the top of the forming plate 103, and the top of the forming plate 103 is made of aluminum alloy, the gas will be blocked by the blocking frame 208 and the blocking frame 209, causing the gas to generate high pressure. As the forming plate 103 continues to move, one side of the rocker 206 will contact the convex block at the bottom of the fixing plate 202, causing the fixing frame 205 to rotate, and the other side to rise, pushing the sliding rod 207 upward.

[0046] The jetting mechanism 2 further includes two fixing rings one 215 fixedly connected to the inner wall of the sliding groove 201. A spring return rod 213 is slidably connected to the inner wall of each of the six blocking frames 208. Two spring blocking plates 214 are placed on the inner wall of the sliding groove 201. The outer walls of the two spring blocking plates 214 are slidably connected to the inner walls of the fixing rings one 215, which will push the rotating frame 211 upward, squeeze the spring return rod 213, allowing the spring return rod 213 to accumulate resilience. At the same time, the rotating frame 211 rotates, pulling the connecting plate 210 downward, driving the blocking frame 209 downward, causing a gap to appear between the blocking frame 209 and the blocking frame 208.

[0047] The blocking mechanism 3 further includes a support ring 305 fixedly connected to the outer wall of the sliding rod 207. A blocking ring 304 is slidably connected to the outer walls of the six sliding rods 207. Three fixing blocks 306 are fixedly connected to the outer walls of the six sliding rods 207. A spring extrusion rod 307 is slidably connected to the inner walls of the eighteen fixing blocks 306. When the sliding rod 207 ascends, it will also drive the support ring 305 to ascend. The support ring 305 will drive the blocking ring 304 to approach the second fixing ring 301. Since the aluminum alloy has been separated from the lower die 101 when it is lifted by the forming plate 103, a gap will be formed between the aluminum alloy and the side wall of the lower die 101. When the high-pressure gas separates the bottom of the aluminum alloy from the forming plate 103, the gas will quickly discharge from the gap between the aluminum alloy and the side wall of the lower die 101. When the flowing gas jets outwards and passes through the second fixing ring 301, it will form an adsorption on the blocking ring 304. Some gas will also pass through the bottom of the blocking ring 304, thereby applying a thrust to move the blocking ring 304 towards the second fixing ring 301 until the blocking ring 304 contacts the second fixing ring 301 to block the second fixing ring 301 and reduce the gas discharge. Additionally, when the forming plate 103 descends, the rocker 206 will separate from the convex block of the fixing plate 202, and the force squeezing the rocker 206 will disappear. At this time, the restoring force of the spring reset rod 213 will be released to push the rotating frame 211 to descend, driving the sliding rod 207 to descend. During the descent of the sliding rod 207, the spring extrusion rod 307 will contact the blocking ring 304, causing the spring extrusion rod 307 to be squeezed. As the sliding rod 207 continues to descend, the fixing block 306 will contact the blocking ring 304, thereby driving the blocking ring 304 to descend.

[0048] The quantity of the above components is not limited. Those skilled in the relevant art can freely set it according to actual requirements, as long as the above components are installed at the corresponding connection positions of the corresponding components.

[0049] The usage method of the die for forging 7-series aluminum alloy includes the following steps:

[0050] S1: Lifting and demolding twice;

[0051] S2: Gas demolding;

[0052] S3: Blocking gas.

[0053] A specific application of this embodiment is as follows: When the present invention is in use, the staff places the heated aluminum alloy on the forming plate 103, and then starts the punching machine 104 to extend, pushing the upper die 102 downward, driving the connecting rod 106 downward, enabling the connecting rod 106 to push the connecting rod 107 to rotate, causing the connecting rod 107 to push the inclined block 108 to move, making the two inclined blocks 108 move away from each other until the inclined block 108 separates from the forming plate 103. At this time, the forming plate 103 will descend until the upper die 102 fits with the lower die 101, completing the forging of the aluminum alloy. Then, retract the punching machine 104, driving the punching machine 104 to rise, causing the connecting rod 106 to rise, pulling the connecting rod 107 to rise, thereby making the two inclined blocks 108 move towards the forming plate 103 until the inclined block 108 contacts the forming plate 103. Since the contact surfaces of both are inclined surfaces, the inclined block 108 will smoothly lift the forming plate 103, thereby driving the aluminum alloy to rise slowly, separating the adhesion force between the aluminum alloy and the lower die 101 slowly. When the forming plate 103 is lifted, the inclined block 108 will continue to move and will contact the jacking rod 109. Since the contact surfaces of both are inclined surfaces, the inclined block 108 will jack up the jacking rod 109, squeezing the return spring 110, causing the return spring 110 to accumulate resilience. After the jacking rod 109 rises, it will jack up the aluminum alloy again, separating the aluminum alloy from the bottom of the forming plate 103, thereby jacking up the formed aluminum alloy, enabling the aluminum alloy to gradually separate from the mold, reducing the impact generated during demolding. At the same time, jacking up the aluminum alloy twice helps to reduce the adhesion force between the aluminum alloy and the forming plate, ensuring that the aluminum alloy can be smoothly demolded;

[0054] Secondly, when the forming plate 103 rises, since the fixing plate 202 is in a stationary state, the fixing plate 202 will squeeze the gas in the sliding groove 201, and the squeezed gas will enter the air delivery pipe 203. Since the blocking frame 208 and the blocking frame 209 are flush with the top of the forming plate 103, and there is aluminum alloy on the top of the forming plate 103, the gas will be blocked by the blocking frame 208 and the blocking frame 209, generating high pressure. As the forming plate 103 continues to move, one side of the seesaw 206 will contact the convex block at the bottom of the fixing plate 202, causing the fixing frame 205 to rotate, the other side to rise, pushing the sliding rod 207 to rise. When the sliding rod 207 rises, it will push the rotating frame 211 to rise, squeezing the spring return rod 213, causing the spring return rod 213 to accumulate resilience. At the same time, causing the rotating frame 211 to rotate, pulling the connecting plate 210 to descend, driving the blocking frame 209 to descend, creating a gap between the blocking frame 209 and the blocking frame 208, as Figure VIAs shown, high-pressure gas will spray out from the gap towards the bottom of the aluminum alloy. Through the gas isolation effect, it can avoid the aluminum alloy being most closely attached to the forming plate 103 during the forging process, resulting in a strong adhesion force between the two, thereby eliminating the strong adhesion force on the surface between the aluminum alloy and the forming plate 103, and ensuring that the aluminum alloy can be smoothly separated during demolding;

[0055] Secondly, when the sliding rod 207 rises, it will also drive the support ring 305 to rise. The support ring 305 will drive the blocking ring 304 to approach the second fixing ring 301. Since the aluminum alloy has been separated from the lower mold 101 when it is lifted by the forming plate 103, a gap will be formed between the aluminum alloy and the side wall of the lower mold 101. When the high-pressure gas separates the bottom of the aluminum alloy from the forming plate 103, the gas will quickly discharge from the gap between the aluminum alloy and the side wall of the lower mold 101. When the flowing gas sprays outwards and passes through the second fixing ring 301, it will form an adsorption force on the blocking ring 304. Some gas will also pass through the bottom of the blocking ring 304, thereby applying a thrust to make the blocking ring 304 move towards the second fixing ring 301 until the blocking ring 304 contacts the second fixing ring 301 and blocks the second fixing ring 301 to reduce the gas discharge. At this time, the high-pressure gas will push the bottom of the blocking ring 304 and lift the blocking ring 304 to make the blocking ring 304 fully fit with the second fixing ring 301 and block the second fixing ring 301. At the same time, the blocking ring 304 will contact the spring pressing block 303. Since the contact surfaces of both are inclined planes, the blocking ring 304 will smoothly squeeze the spring pressing block 303. Through the resilience of the spring pressing block 303, the outer wall of the blocking ring 304 is fixed, making the blocking ring 304 fixed. By blocking the second fixing ring 301, it can effectively prevent the adhesion degree of various parts of the aluminum alloy and the forming plate 103 from being inconsistent. After the gas outlet pipe 203 in the area with a lower adhesion force has completed gas discharge, the gas all flows out through this gas outlet pipe 203, reducing the gas output of other gas outlet pipes 203 and reducing the outward thrust of the remaining gas outlet pipes 203;

[0056] Secondly, when the forming plate 103 descends, the rocker 206 will separate from the convex block of the fixed plate 202, and the force squeezing the rocker 206 disappears. At this time, the resilience of the spring return rod 213 will be released, pushing the rotating frame 211 to descend, driving the sliding rod 207 to descend. During the descent of the sliding rod 207, the spring pressing rod 307 will contact the blocking ring 304, causing the spring pressing rod 307 to be squeezed. As the sliding rod 207 continues to descend, the fixed block 306 will contact the blocking ring 304, thereby driving the blocking ring 304 to descend. At this time, the resilience of the spring pressing rod 307 will be released, pushing the blocking ring 304 to descend rapidly to contact the support ring 305. At the same time, when the rocker 206 is completely separated from the fixed plate 202, the inside of the sliding groove 201 will be in a sealed state again. At this time, as the forming plate 103 descends, negative pressure will be generated at the bottom of the fixed plate 202, thereby sucking up the spring blocking plate 214, connecting the sliding groove 201 with the outside, and supplementing gas; In addition: by separating the blocking ring 304 from the second fixed ring 301, it is convenient for the next gas ejection.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A die for forging 7-series aluminum alloy, including a demoulding mechanism (1), the demoulding mechanism (1) further includes a lower die (101), an upper die (102) is arranged at the top of the lower die (101), and a forming plate (103) is slidably connected to the inner wall of the lower die (101), characterized in that, It further includes: A jetting mechanism (2), the jetting mechanism (2) includes a sliding groove (201) opened on the inner wall of the forming plate (103), a fixing plate (202) is slidably connected to the inner wall of the sliding groove (201), and six air delivery pipes (203) are connected through the inner wall of the forming plate (103); A blocking mechanism (3), the blocking mechanism (3) includes a second fixing ring (301) fixedly connected to the inner wall of the air delivery pipe (203), six placing grooves (302) are opened on the inner walls of the six second fixing rings (301), and a spring pressing block (303) is slidably connected to the inner wall of each of the thirty-six placing grooves (302).

2. A die for forging 7-series aluminum alloy according to claim 1, characterized in that: The demolding mechanism (1) further includes four first fixing rods (105) fixedly connected to the top of the lower mold (101), the outer walls of the four first fixing rods (105) are slidably connected to the inner wall of the upper mold (102), a punching machine (104) is fixedly connected to the outer walls of the four first fixing rods (105), the bottom output end of the punching machine (104) is fixedly connected to the top of the upper mold (102), and connecting rods (106) are fixedly connected to both the left and right sides of the upper mold (102).

3. A die for forging 7-series aluminum alloy according to claim 2, characterized in that: The demolding mechanism (1) further includes two inclined plane blocks (108) slidably connected to the top of the lower mold (101), connecting rods (107) are rotatably connected to the side walls of the two inclined plane blocks (108), the bottoms of the two connecting rods (106) are rotatably connected to the inner walls of the connecting rods (107), two jacking rods (109) are slidably connected to the inner wall of the forming plate (103), and a return spring (110) is sleeved on the outer walls of the two jacking rods (109).

4. A die for forging 7-series aluminum alloy according to claim 3, characterized in that: The jetting mechanism (2) further includes a second fixing rod (204) fixedly connected to the inner wall of the lower mold (101), the top of the second fixing rod (204) is fixedly connected to the bottom of the fixing plate (202), the outer wall of the second fixing rod (204) is slidably connected to the inner wall of the forming plate (103), and six fixing frames (205) are fixedly connected to the inner wall of the sliding groove (201); Among them, a seesaw (206) is rotatably connected to the outer walls of the six fixing frames (205), sliding rods (207) are slidably connected to the inner walls of the six air delivery pipes (203), blocking frames (208) are fixedly connected to the inner walls of the six air delivery pipes (203), and the inner wall of the fixing plate (202) is slidably connected to the outer wall of the air delivery pipe (203).

5. A die for forging 7-series aluminum alloy according to claim 4, characterized in that: The jetting mechanism (2) further includes four blocking frames (209) slidably connected to the inner wall of the air delivery pipe (203), connecting plates (210) are fixedly connected to the bottoms of the twenty-four blocking frames (209), four rotating frames (211) are arranged on the inner walls of the six air delivery pipes (203), and four third fixing rods (212) are fixedly connected to the inner walls of the six air delivery pipes (203); Among them, the inner walls of the twenty-four rotating frames (211) are all rotatably connected to the outer walls of the third fixing rods (212), and the inner walls of the twenty-four rotating frames (211) are all slidably connected to the bottom of the connecting plate (210).

6. A die for forging 7-series aluminum alloy according to claim 5, characterized in that: The jetting mechanism (2) further includes two first fixing rings (215) fixedly connected to the inner wall of the sliding groove (201). Spring return rods (213) are slidably connected to the inner walls of the six blocking frames (208). Two spring blocking plates (214) are placed on the inner wall of the sliding groove (201). The outer walls of the two spring blocking plates (214) are slidably connected to the inner walls of the first fixing rings (215).

7. A die for forging 7-series aluminum alloy according to claim 6, characterized in that: The blocking mechanism (3) further includes a support ring (305) fixedly connected to the outer wall of the sliding rod (207). Blocking rings (304) are slidably connected to the outer walls of the six sliding rods (207). Three fixing blocks (306) are fixedly connected to the outer walls of the six sliding rods (207). Spring pressing rods (307) are slidably connected to the inner walls of the eighteen fixing blocks (306).

8. A method for using a mold for forging 7xxx series aluminum alloy, using a mold for forging 7xxx series aluminum alloy as described in claim 7, characterized in that: It includes the following steps S1: Lifting and demolding twice S2: Gas demolding S3: Blocking gas

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