Aluminum alloy pipe low-pressure casting device and method

Abstract

The invention discloses a low-pressure casting device and method for an aluminum alloy pipeline, which belongs to the technical field of pipeline casting. The invention drives the combined outer mold and inner mold assembly to rotate through a flip assembly, so that the mold closing assembly moves from the recessed portion to the annular plate, thereby automatically realizing the mold closing operation of the combined outer mold. After the combined outer mold corresponds to the vacuum joint, the electric push rod pushes the vacuum joint to correspond to the combined outer mold. During the docking process, the magnetic attraction between the magnets drives the sealing assembly to open the combined outer mold, and then the vacuum assembly can smoothly perform vacuum operation. After vacuuming, the vacuum joint is disengaged. At this time, the sealing assembly automatically closes the combined outer mold to maintain sealing, thereby ensuring the vacuum operation of the combined outer mold. Before vacuuming and docking, the mold is automatically closed and the sealing assembly is opened, and after vacuuming, the sealing assembly is automatically closed to maintain operation continuity. The invention is suitable for casting high-strength and toughness lightweight aluminum alloy structural parts, and improves the casting quality of high-strength and toughness lightweight structural parts cast aluminum alloy.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline casting, and in particular to a low-pressure casting device and method for an aluminum alloy pipeline. Background Art

[0002] In the process of preparing aluminum alloy pipes, high-strength, toughness and lightweight structural parts are often produced by die-casting. Low-pressure casting of aluminum alloy pipes is an advanced casting process and a technology that can produce structural parts with high strength, high toughness and lightweight characteristics.

[0003] A search of CN117086288B discloses a low-pressure casting device for aluminum alloy pipes and its use method, which solves the problems of the existing low-pressure casting process for preparing aluminum alloy pipes, such as the inconvenience of quickly demolding the pipes, the low efficiency of casting, and the inconvenience of only producing one piece in a single casting.

[0004] When in use, the low-pressure casting device for aluminum alloy pipes realizes low-pressure casting of aluminum alloy pipes through structures such as a pressurized material guide mechanism, a pressurized box, a cylinder, and a guide rod. However, in actual use, after the casting of the aluminum alloy pipes is completed, it is necessary to manually release the connections between the ends of multiple molds and the end caps and the injection head, and then separate the upper and lower shells of the outer mold before taking them out. The whole process is relatively cumbersome and time-consuming, and it is difficult to achieve continuous demolding. Moreover, when it is used next time, the installation of the end caps may cause more gas to enter, which is not convenient for rapid exhaust processing and affects the casting quality to a certain extent. In response to the above problems, the present invention document proposes a low-pressure casting device and method for aluminum alloy pipes. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that after the casting of the aluminum alloy pipe is completed, it is necessary to manually release the connections between the two ends of multiple molds and the end covers and the injection head respectively, and then separate the upper and lower shells of the outer mold respectively before taking it out. The whole process is relatively cumbersome and time-consuming, and it is difficult to achieve continuous demolding. Moreover, when used next time, more gas may enter during the installation of the end cover, which is not convenient for rapid exhaust treatment and affects the casting quality to a certain extent. A low-pressure casting device and method for aluminum alloy pipes are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A low-pressure casting device for an aluminum alloy pipe comprises a die-casting mechanism, wherein the die-casting mechanism is provided with a die-matching mechanism;

[0008] The die-casting mechanism includes a base, a vacuum assembly is provided on the base, an annular plate and a die-casting device are fixedly mounted on the base, a notch is provided above the annular plate, and a raw material output assembly is provided on the die-casting device;

[0009] The mold alignment mechanism includes a flip assembly, which is provided with a vibration assembly and a combined plug. The four sides of the flip table of the flip assembly are connected to elastic components, and both sides of the elastic component are connected to mold paralleling auxiliary components. The two mold paralleling auxiliary components are connected to the mold clamping assembly and the two combined outer molds.

[0010] The pulley of the clamping assembly runs on the inner wall of the annular plate, and one end of the clamping assembly is also connected to the combined outer mold. An inner mold assembly is arranged between the two combined outer molds. A semi-annular conical groove is opened inside the combined outer mold, and a sealing assembly is arranged in the semi-annular conical groove. The sealing assembly is automatically opened for vacuuming operation by docking the combined outer mold with the vacuum assembly.

[0011] Preferably, the raw material output assembly includes two cylinders, which are fixedly installed on the die-casting equipment. One end of the two cylinders is fixedly connected to a pipe clamp, and a plurality of gear rods are fixedly connected to the pipe clamp. An output pipe is installed through the pipe clamp, and the output pipe is arranged in the die-casting equipment.

[0012] Preferably, the flipping assembly includes a fixed frame and a side plate, the fixed frame is fixedly connected to the base, a first motor is fixedly mounted on the fixed frame, the output shaft of the first motor is fixedly connected to a rotating shaft, the rotating shaft is rotatably mounted on the fixed frame and the side plate through two bearings respectively, the combined plug is fixedly mounted on the side plate, and a flipping table is fixedly mounted on the rotating shaft.

[0013] Preferably, the vibration assembly includes a fixed plate, which is fixedly connected to a fixed frame, a second motor is fixedly mounted on the fixed plate, an output shaft of the second motor is fixedly connected to a transmission shaft, the transmission shaft is rotatably mounted on the fixed plate through a bearing, and a cam is fixedly mounted on the transmission shaft.

[0014] Preferably, the vacuum assembly includes a vacuum device, which is fixedly mounted on a base, and is connected to a vacuum tube, which is connected to a plurality of vacuum joints, and the same clamping plate is mounted on the plurality of vacuum joints, and a plurality of support rods are fixedly connected to the interior of the clamping plate, and one side of the clamping plate is fixedly connected to an electric push rod, which is fixedly mounted on a mounting plate, and the mounting plate is fixedly connected to the base.

[0015] Preferably, the mold closing assembly includes a bracket and a movable rod, the movable rod is inserted into and slides in the bracket, one end of the movable rod is fixedly connected to a pulley, the other end of the movable rod is fixedly connected to one of the combined outer molds, and a second spring is fixedly connected between the combined outer mold and the bracket.

[0016] Preferably, the inner mold assembly includes multiple inner mold structures, each two combined outer molds are surrounded by the corresponding inner mold structure, a delivery head is installed at one end of the inner mold structure, the delivery head is docked with the two combined outer molds, the multiple delivery heads are fixed by a clamping plate, and a tooth valve is provided on the delivery head.

[0017] Preferably, the elastic component includes a connecting frame, on which a roller is rotatably mounted, each roller contacts a cam through rotation switching, both ends of the connecting frame are fixedly connected to a cross plate, the cross plate slides on a slide rod, both ends of the slide rod are fixedly connected to two fixed blocks, the two fixed blocks are fixedly connected to another combined outer mold, and both sides of the cross plate are fixedly connected to a third spring, one end of the third spring is fixedly connected to the fixed block.

[0018] Preferably, the mold paralleling auxiliary assembly includes two guide rods and a support shaft, the two ends of the two guide rods are fixedly connected to the cross plate and the bracket, the guide rods are slidably connected to a guide sleeve, and every two guide sleeves are fixedly connected to the corresponding combined outer molds, and the two guide rods are mounted on a support plate, and the support shaft is rotatably mounted on the support plate through a bearing, and a gear is fixedly mounted on the support shaft, and the gear is engaged with two tooth plates, and the two tooth plates are respectively fixedly connected to the two combined outer molds;

[0019] The sealing assembly includes a semi-ring seal, which is arranged in a semi-ring conical groove. The two semi-ring seals are overlapped. One side of the semi-ring seal is fixedly connected to a first spring and a telescopic rod. One end of the first spring and the telescopic rod is fixedly connected to a fixing member. The fixing member is fixedly connected to the combined outer mold. Magnets are installed at multiple positions of each support rod and the semi-ring seal. Adjacent magnets are magnetically attracted to each other. Multiple push rods are fixedly connected to each cavity of the combined plug.

[0020] A method for using a low-pressure casting device for an aluminum alloy pipe comprises the following steps:

[0021] S1. During the die-casting operation of the aluminum alloy pipe, the first motor drives the rotating shaft to rotate, which drives the turning table to rotate. The turning table drives the combined outer mold to rotate through the elastic component and the mold-joining auxiliary component, so that the mold-joining component moves, and the pulley moves along the notch toward the annular plate, so that the notch squeezes the pulley to move, and the pulley drives the movable rod to move, and the combined outer mold moves and drives the second spring to deform, and the combined outer mold drives the tooth plate to move. The two tooth plates generate relative motion through gear transmission, so that the two combined outer molds are joined on the conveying head and surrounded by the inner mold structure;

[0022] S2. After the mold is closed, the delivery head corresponds to the vacuum joint. At this time, the electric push rod pushes the chuck plate to move, so that the vacuum joint is connected to the combined outer mold. The magnetic attraction between the magnets drives the semi-ring seal to retract and drives the deformation of the first spring. The semi-ring seal is separated from the inner wall of the semi-ring conical groove, so that the vacuum joint is connected to the combined outer mold. At this time, the vacuum equipment is operated to vacuum the combined outer mold. After vacuuming, the electric push rod retracts, so that the vacuum joint is away from the combined outer mold, the magnets are separated, and the first spring drives the semi-ring seal to return to the original position and stick to the inner wall of the semi-ring conical groove, so that the combined outer mold is sealed.

[0023] S3. After the vacuum operation of the combined outer mold is completed, the conveying is continued so that the conveying head corresponds to the output pipe. At this time, the cylinder drives the pipe clamp and the output pipe to move, and the output pipe is docked with the combined outer mold. The movement of the pipe clamp drives the gear rod and the gear valve to drive, open the conveying head, and continue to apply force to dock the combined outer mold with the combined plug. After docking, the push rod applies force to the semi-ring seal to maintain sealing. At this time, the die-casting equipment feeds the material into the combined outer mold through the output pipe for casting operation;

[0024] S4. After the casting is completed, the raw material output assembly is reset and separated from the conveying head, and then the finished casting is conveyed upward. When the pulley moves to the notch position, the second spring applies a separation force to the combined outer mold, and the second motor drives the transmission shaft to rotate, and the transmission shaft drives the cam to rotate. The cam cooperates with the third spring to apply a reciprocating force to the rotating roller, causing the connecting frame and the cross plate to vibrate. The cross plate drives the combined outer mold to vibrate through the guide rod and the guide sleeve to perform demoulding. After demoulding, the combined outer mold is separated, the finished product is taken out, and then the continuous casting operation is continued in a cycle.

[0025] Compared with the prior art, the present invention provides an aluminum alloy pipe low-pressure casting device and method thereof, which has the following beneficial effects:

[0026] 1. The low-pressure casting device and method for aluminum alloy pipes drive the combined outer mold and inner mold assembly to rotate by a flip assembly, so that the mold clamping assembly moves from the notch to the annular plate, thereby automatically realizing the mold clamping operation of the combined outer mold. After the combined outer mold corresponds to the vacuum joint, the electric push rod pushes the vacuum joint to correspond with the combined outer mold. During the docking process, the magnetic attraction between the magnets drives the sealing assembly to open the combined outer mold, so that the vacuum assembly can smoothly perform vacuum operation. After vacuuming, the vacuum joint is disengaged. At this time, the sealing assembly automatically closes the combined outer mold to maintain sealing, thereby ensuring the vacuum operation of the combined outer mold. Before vacuuming and docking, the mold is automatically closed and the sealing assembly is opened. After vacuuming, the sealing assembly is automatically closed to maintain operation continuity. The device is suitable for casting high-strength and toughness lightweight aluminum alloy structural parts and improves the casting quality of high-strength and toughness lightweight aluminum alloy cast structural parts.

[0027] 2. The low-pressure casting device and method for aluminum alloy pipes connect the raw material output component with the inner mold component, and engage the tooth rod with the tooth valve to automatically open the delivery head. By continuing to push, one end of the combined outer mold is connected to the combined plug, and the sealing component is pressed against the push rod to maintain the stability of the combined outer mold seal, ensuring that the die-casting equipment can stably feed the material for the casting operation. After the casting is completed, the molded product is continued to be conveyed through the flipping component, so that the mold clamping component is located in the recessed part and a separation force is applied. The vibration component cooperates with the elastic component to vibrate the combined outer mold, thereby realizing the automatic demolding operation and ensuring the efficient and stable production of high-strength, tough and lightweight aluminum alloy.

[0028] 3. The low-pressure casting device and method of the aluminum alloy pipe drive the combined outer mold to rotate through the flip component, so that the mold clamping component moves out of the recess, and then drives the combined outer mold and inner mold component to automatically clamp the mold. After clamping, it is docked with the vacuum component and the sealing component is automatically opened, so that the vacuum operation of the combined outer mold can be carried out smoothly. After vacuum, it continues to be transported to the casting area and docked with the inner mold component through the raw material output component, and cooperates with the vacuum plug to achieve the tightness of the closure of the combined outer mold to ensure the casting operation. After vacuuming, the quality and process stability of the high-strength and lightweight aluminum alloy are significantly improved. After casting, the mold clamping component is located in the recess and generates a separation force. At this time, the vibration component cooperates with the elastic component to realize the vibration of the combined outer mold, thereby realizing the demoulding operation. This process completes the vacuuming, casting and demoulding operations synchronously by cyclically switching the mold position, realizing continuous production, and has a simple structure, improved operability, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional view of a low-pressure casting device for aluminum alloy pipes proposed by the present invention;

[0030] Figure 2 A three-dimensional view of the base of a low-pressure casting device for aluminum alloy pipes proposed by the present invention;

[0031] Figure 3 A three-dimensional view of a die-casting device for a low-pressure casting of an aluminum alloy pipe proposed by the present invention;

[0032] Figure 4 A three-dimensional view of an annular plate of a low-pressure casting device for an aluminum alloy pipe proposed by the present invention;

[0033] Figure 5 A three-dimensional view of the connection between the flip assembly and the vibration assembly of the low-pressure casting device for aluminum alloy pipes proposed by the present invention;

[0034] Figure 6 A three-dimensional view of a fixing frame of a low-pressure casting device for an aluminum alloy pipe proposed by the present invention;

[0035] Figure 7 A three-dimensional view of a vacuum component of a low-pressure casting device for an aluminum alloy pipe proposed by the present invention;

[0036] Figure 8 A three-dimensional view of the connection between the die clamping assembly and the combined outer mold of the low-pressure casting device for aluminum alloy pipes proposed by the present invention;

[0037] Figure 9 A three-dimensional view of the connection between the combined outer mold and inner mold assembly of the low-pressure casting device for an aluminum alloy pipe proposed by the present invention;

[0038] Figure 10 A three-dimensional view of the die-joining auxiliary components of a low-pressure casting device for an aluminum alloy pipe proposed by the present invention;

[0039] Figure 11 A three-dimensional view of the connection between a vacuum joint and a combined outer mold section of an aluminum alloy pipe low-pressure casting device proposed by the present invention;

[0040] Figure 12 This is a three-dimensional view of the connection between the combined plug and the combined outer mold section of the low-pressure casting device for aluminum alloy pipelines proposed by the present invention.

[0041] Figure 100, die-casting mechanism; 101, base; 102, die-casting equipment; 103, raw material output assembly; 1031, cylinder; 1032, pipe clamp; 1033, output pipe; 1034, gear rod; 104, annular plate; 105, vacuum assembly; 1051, vacuum equipment; 1052, vacuum tube; 1053, mounting plate; 1054, electric push rod; 1055, vacuum connector; 1056 , chuck plate; 1057, support rod; 1058, magnet; 106, sealing assembly; 1061, semi-ring seal; 1062, first spring; 1063, telescopic rod; 1064, fixing member; 107, notch; 200, mold matching mechanism; 201, flip assembly; 2011, first motor; 2012, fixing frame; 2013, rotating shaft; 2014, flip table; 2015, side plate; 2 02, vibration assembly; 2021, fixed plate; 2022, second motor; 2023, cam; 2024, transmission shaft; 203, mold clamping assembly; 2031, pulley; 2032, second spring; 2033, movable rod; 2034, bracket; 204, combined outer mold; 205, mold clamping auxiliary assembly; 2051, guide rod; 2052, guide sleeve; 2053, support plate; 2054, support Support shaft; 2055, gear; 2056, tooth plate; 206, elastic component; 2061, connecting frame; 2062, roller; 2063, cross plate; 2064, slide bar; 2065, third spring; 2066, fixed block; 207, combined plug; 208, push rod; 209, inner mold assembly; 2091, inner mold structure; 2092, delivery head; 2093, tooth valve; 210, semi-annular conical groove. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0044] Example 1: Reference Figure 1-Figure 2 and Figure 4-12 A low-pressure casting device for an aluminum alloy pipe comprises a die-casting mechanism 100 on which a die-matching mechanism 200 is provided;

[0045] The die-casting mechanism 100 includes a base 101, on which a vacuum assembly 105 is provided. The vacuum assembly 105 includes a vacuum device 1051, which is fixedly mounted on the base 101. The vacuum device 1051 is connected to a vacuum tube 1052. The vacuum tube 1052 is partially a hose, which makes the vacuum tube 1052 retractable, thereby allowing the vacuum joint 1055 to move smoothly. The vacuum tube 1052 is connected to multiple vacuum joints 1055. The multiple vacuum joints 1055 are equipped with the same head plate 1056. The head plate 1056 is fixedly connected to multiple support rods 1 057, one side of the clamping plate 1056 is fixedly connected to the electric push rod 1054. The electric push rod 1054 pushes the clamping plate 1056 to move, so that the clamping plate 1056 drives the vacuum joint 1055 to smoothly connect with the combined outer mold 204, thereby facilitating the vacuum operation. The electric push rod 1054 is fixedly mounted on the mounting plate 1053, and the mounting plate 1053 is fixedly connected to the base 101. The annular plate 104 and the die-casting device 102 are fixedly mounted on the base 101. A notch portion 107 is provided above the annular plate 104. The die-casting device 102 is provided with a raw material output assembly 103;

[0046] The mold matching mechanism 200 includes a flip assembly 201, which includes a fixed frame 2012 and a side plate 2015. The fixed frame 2012 is fixedly connected to the base 101. The first motor 2011 can be fixed by the fixed frame 2012 to ensure the stability of the first motor 2011, so that the first motor 2011 drives the rotating shaft 2013 to drive the flip table 2014 to rotate, so that the flip table 2014 can drive the combined outer mold 204 to switch positions, thereby performing a cyclic casting operation. The first motor 2011 is fixedly installed on the fixed frame 2012, and the output shaft of the first motor 2011 is fixedly connected to the rotating shaft 2013. The rotating shaft 2013 is rotatably mounted on the fixed frame 2012 and the side plate 2015 through two bearings. The rotating shaft 2013 is fixedly connected to the side plate 2015 through two bearings. 13 can maintain stable rotation through bearings, thereby making the flip table 2014 rotate stably, the combined plug 207 is fixedly installed on the side plate 2015, and the flip table 2014 is fixedly installed on the rotating shaft 2013. The flip assembly 201 is provided with a vibration assembly 202 and a combined plug 207. The combined plug 207 has multiple plugging cavities, and the combined outer mold 204 has multiple mold cavities, so that the combined outer mold 204 and the inner mold assembly 209 can be combined to form an integral structure, which is convenient for the simultaneous die-casting of multiple aluminum alloy pipes. The four sides of the flip table 2014 of the flip assembly 201 are connected to the elastic assembly 206, and the two sides of the elastic assembly 206 are connected to the mold auxiliary assembly 205, and the mold auxiliary assembly 205 includes two guide rods 205. 1 and support shaft 2054, the two ends of the two guide rods 2051 are fixedly connected to the cross plate 2063 and the bracket 2034, the guide rod 2051 is slidably connected with a guide sleeve 2052, the guide sleeve 2052 can slide smoothly on the guide rod 2051, so that the combined outer mold 204 moves smoothly, every two guide sleeves 2052 are fixedly connected to the corresponding combined outer mold 204, the two guide rods 2051 are installed with a support plate 2053, the support shaft 2054 is rotatably installed on the support plate 2053 through a bearing, the support shaft 2054 can rotate stably through the bearing, so that the support shaft 2054 drives the gear 2055 to rotate stably, so that the gear 2055 and the two tooth plates 2056 are transmitted, thereby making the two combined outer molds 204 move synchronously to achieve automatic During the mold closing operation, a gear 2055 is fixedly mounted on the support shaft 2054. The gear 2055 meshes with two tooth plates 2056. The two tooth plates 2056 are respectively fixedly connected to the two combined outer molds 204. The two mold closing auxiliary components 205 are connected to the mold closing component 203 and the two combined outer molds 204. The mold closing component 203 includes a bracket 2034 and a movable rod 2033. The movable rod 2033 is inserted and slidably arranged in the bracket 2034. One end of the movable rod 2033 is fixedly connected to a pulley 2031. The rolling of the pulley 2031 can reduce the resistance with the annular plate 104, thereby maintaining the smooth movement of the pulley 2031. When the pulley 2031 moves from the notch 107 to the annular plate 104, the notch 107 squeezes the pulley 2031.Thus, the combined outer mold 204 can be pushed to move by the movable rod 2033, which facilitates the mold closing operation. The other end of the movable rod 2033 is fixedly connected to one of the combined outer molds 204. A second spring 2032 is fixedly connected between the combined outer mold 204 and the bracket 2034. When the pulley 2031 moves to the position of the notch 107, the second spring 2032 can generate a restoring force, thereby applying a separation force to the combined outer mold 204, which is conducive to the demolding operation of the combined outer mold 204.

[0047] The pulley 2031 of the clamping assembly 203 runs on the inner wall of the annular plate 104, and one end of the clamping assembly 203 is also connected to the combined outer mold 204. An inner mold assembly 209 is provided between the two combined outer molds 204. A semi-annular conical groove 210 is provided inside the combined outer mold 204. A sealing assembly 106 is provided in the semi-annular conical groove 210. The sealing assembly 106 includes a semi-annular seal 1061. The semi-annular seal 1061 is provided in the semi-annular conical groove 210. The two semi-annular seals 1061 are overlapped. One side of the semi-annular seal 1061 is fixedly connected with a first spring 1062 and a telescopic rod 1063. The semi-annular seal 1061 is driven to reset by the first spring 1062, so that the semi-annular seal 1061 is tightly attached to the inner wall of the semi-annular conical groove 210, thereby maintaining The sealing of the combined outer mold 204, the first spring 1062 and one end of the telescopic rod 1063 are fixedly connected with a fixing part 1064, and the fixing part 1064 is fixedly connected in the combined outer mold 204. Magnets 1058 are installed at multiple positions of each support rod 1057 and the semi-annular seal 1061. The adjacent magnets 1058 are magnetically attracted to each other. Through the magnetic attraction between the two magnets 1058, the semi-annular seal 1061 is separated from the semi-annular conical groove 210, and the combined outer mold 204 is kept connected with the vacuum joint 1055, so as to facilitate the subsequent vacuum operation. A plurality of push rods 208 are fixedly connected to each cavity of the combined plug 207, which is connected to the vacuum component 105 through the combined outer mold 204, so that the sealing component 106 is automatically opened for vacuum operation.

[0048] In this embodiment, the first motor 2011 drives the rotating shaft 2013 and the turning table 2014 to rotate, so that the combined outer mold 204 and the inner mold assembly 209 rotate, so that the pulley 2031 gradually moves away from the notch 107 and is squeezed to drive the movable rod 2033 to move, so that the movable rod 2033 drives the combined outer mold 204 to move, and cooperates with the mold auxiliary assembly 205 to achieve the mold closing operation of the two combined outer molds 204. After the combined outer mold 204 corresponds to the vacuum joint 1055, the electric push rod 1054 pushes the vacuum joint 1055 to correspond to the combined outer mold 204. During the docking process, the magnet 1058 The magnetic attraction drives the semi-ring seal 1061 to open the combined outer mold 204, and then the vacuum component 105 can smoothly perform vacuum operation. After vacuuming, the vacuum joint 1055 is detached. At this time, the first spring 1062 drives the semi-ring seal 1061 to automatically close the combined outer mold 204 to maintain sealing, thereby ensuring the vacuum operation of the combined outer mold 204. Before vacuuming and docking, the mold is automatically closed and the sealing component 106 is opened. After vacuuming, it is automatically closed to maintain operational continuity. It is suitable for casting high-strength and toughness lightweight aluminum alloy structural parts, and improves the casting quality of high-strength and toughness lightweight cast aluminum alloy structural parts.

[0049] Example 2: Reference Figure 3 、 Figure 6 and Figure 9-10 , a low-pressure casting device for an aluminum alloy pipe includes a raw material output component 103, which includes two cylinders 1031. The cylinders 1031 push the pipe clamp 1032 to move, and the output pipe 1033 can be telescopically slid so that the output pipe 1033 can smoothly dock with the delivery head 2092. The cylinders 1031 are fixedly installed on the die-casting equipment 102. One end of the two cylinders 1031 is fixedly connected to the pipe clamp 1032, and the pipe clamp 1032 is fixedly connected to a plurality of gear rods 1034. The gear rods 1034 are engaged with the gear valve 2093, so that the gear valve 2093 opens the delivery head 2092, so that the delivery head 2092 is smoothly connected to the combined outer mold 204 and the output pipe 1033, so that the die-casting equipment 102 can smoothly die-cast the raw material into the combined outer mold 204. The output pipe 1033 is installed through the pipe clamp 1032, and the output pipe 1033 is set in the die-casting equipment 102;

[0050] The vibration assembly 202 includes a fixed plate 2021, which is fixedly connected to the fixed frame 2012. A second motor 2022 is fixedly mounted on the fixed plate 2021. The output shaft of the second motor 2022 is fixedly connected to a transmission shaft 2024. The transmission shaft 2024 is rotatably mounted on the fixed plate 2021 via a bearing. The transmission shaft 2024 can maintain stable rotation through the bearing, so that the transmission shaft 2024 can drive the cam 2023 to rotate stably. The cam 2023 is fixedly mounted on the transmission shaft 2024.

[0051] The inner mold assembly 209 includes multiple inner mold structures 2091. Each of the two combined outer molds 204 is surrounded by a corresponding inner mold structure 2091. A delivery head 2092 is installed at one end of the inner mold structure 2091. The delivery head 2092 is connected to the two combined outer molds 204. The multiple delivery heads 2092 are fixed together by a clamping plate, and a tooth valve 2093 is provided on the delivery head 2092.

[0052] The mold clamping assembly 203 includes a bracket 2034 and a movable rod 2033. The movable rod 2033 is inserted into and slides in the bracket 2034. One end of the movable rod 2033 is fixedly connected to a pulley 2031. The other end of the movable rod 2033 is fixedly connected to one of the combined outer molds 204. A second spring 2032 is fixedly connected between the combined outer mold 204 and the bracket 2034.

[0053] The elastic component 206 includes a connecting frame 2061, on which a roller 2062 is rotatably mounted. Each roller 2062 contacts the cam 2023 by rotating and switching. Both ends of the connecting frame 2061 are fixedly connected to a cross plate 2063, which slides on the slide rod 2064. The cross plate 2063 can slide smoothly on the slide rod 2064, so that the cross plate 2063 drives the guide rod 2051 to move smoothly. Both ends of the slide rod 2064 are fixedly connected to two fixed blocks 2066, and the two fixed blocks 2066 are fixedly connected to another combined outer mold 204, and the cross plate 2063 A third spring 2065 is fixedly connected on both sides, and the cam 2023 squeezes the roller 2062 to move, and the connecting frame 2061 drives the third spring 2065 to deform through the cross plate 2063. When the convex surface of the cam 2023 moves away from the roller 2062, the third spring 2065 drives the cross plate 2063 and the connecting frame 2061 to reset, so that the cam 2023 cooperates with the third spring 2065 to apply a reciprocating force to the roller 2062, so that the combined outer mold 204 can be driven by the mold auxiliary component 205 to realize the vibration demoulding operation. One end of the third spring 2065 is fixedly connected to the fixed block 2066.

[0054] In this embodiment, the cylinder 1031 pushes the pipe clamp 1032 to move, so that the output pipe 1033 is connected to the delivery head 2092. At the same time, the gear rod 1034 is engaged with the gear valve 2093, and the delivery head 2092 is automatically opened. By continuing to push, one end of the combined outer mold 204 is connected to the combined plug 207, and the push rod 208 is pressed against the sealing component 106 to maintain the stability of the seal of the combined outer mold 204, ensuring that the die-casting equipment 102 stably feeds the material for the casting operation. After the casting is completed, the die-casting equipment 102 is turned over. The rotating assembly 201 continues to convey the molded product, so that the mold clamping assembly 203 is located in the recessed portion 107, and the second spring 2032 applies a separation force to the combined outer mold 204, and the second motor 2022 drives the transmission shaft 2024 and the cam 2023, the cam 2023 squeezes the roller 2062, and cooperates with the third spring 2065 to generate a reciprocating squeezing force on the roller 2062, causing the combined outer mold 204 to vibrate, thereby realizing the automatic demoulding operation, while ensuring the efficient and stable production of high-strength and lightweight aluminum alloy.

[0055] Example 3: Reference Figure 2 、 Figure 4-Figure 5 and Figure 8-Figure 9 A low-pressure casting device for an aluminum alloy pipe includes a die-casting mechanism 100. The die-casting mechanism 100 includes a base 101, a vacuum assembly 105 is provided on the base 101, an annular plate 104 and a die-casting device 102 are fixedly mounted on the base 101, a notch 107 is provided above the annular plate 104, and a raw material output assembly 103 is provided on the die-casting device 102;

[0056] The mold alignment mechanism 200 includes a flip assembly 201, which is provided with a vibration assembly 202 and a combined plug 207. The four sides of the flip platform 2014 of the flip assembly 201 are connected to elastic assemblies 206, and both sides of the elastic assembly 206 are connected to mold-joining auxiliary assemblies 205. The two mold-joining auxiliary assemblies 205 are connected to the mold clamping assembly 203 and the two combined outer molds 204.

[0057] The pulley 2031 of the clamping assembly 203 runs on the inner wall of the annular plate 104, and one end of the clamping assembly 203 is also connected to the combined outer mold 204. An inner mold assembly 209 is arranged between the two combined outer molds 204. A semi-annular conical groove 210 is opened inside the combined outer mold 204, and a sealing assembly 106 is arranged in the semi-annular conical groove 210. By docking the combined outer mold 204 with the vacuum assembly 105, the sealing assembly 106 is automatically opened for vacuuming operation.

[0058] In this embodiment: the combined outer mold 204 is driven to rotate by the flip component 201, so that the mold clamping component 203 moves out of the recessed portion 107, and then the combined outer mold 204 can be driven to automatically clamp the mold with the inner mold component 209. After clamping, it is docked with the vacuum component 105 and the sealing component 106 is automatically opened, so that the vacuum operation of the combined outer mold 204 can be carried out smoothly. After vacuum, it continues to be transported to the casting area and docked with the inner mold component 209 through the raw material output component 103, and cooperates with the vacuum plug to achieve the closing tightness of the combined outer mold 204 to ensure the casting operation. After vacuuming, the quality and process stability of the high-strength and tough lightweight aluminum alloy are significantly improved. After casting, the mold clamping component 203 is located in the recessed portion 107 to generate a separation force. At this time, the vibration component 202 cooperates with the elastic component 206 to realize the vibration of the combined outer mold 204, thereby realizing the demoulding operation. This process completes the vacuuming, casting and demoulding operations synchronously by cyclically switching the mold position, thereby realizing continuous production, and has a simple structure, improved operability, and low cost.

[0059] A method for using a low-pressure casting device for an aluminum alloy pipe comprises the following steps:

[0060] S1. During the die-casting operation of the aluminum alloy pipe, the first motor 2011 drives the rotating shaft 2013 to rotate, and the rotating shaft 2013 drives the flip table 2014 to rotate. The flip table 2014 drives the combined outer mold 204 to rotate through the elastic component 206 and the mold-joining auxiliary component 205, so that the mold-joining component 203 moves, and the pulley 2031 moves along the notch 107 toward the annular plate 104, so that the notch 107 squeezes the pulley 2031. The moving pulley 2031 drives the movable rod 2033 to move, and the combined outer mold 204 moves and drives the second spring 2032 to deform, and the combined outer mold 204 drives the tooth plate 2056 to move. The two tooth plates 2056 are driven by the gear 2055 to generate relative motion, so that the two combined outer molds 204 are joined on the delivery head 2092 and surrounded by the inner mold structure 2091;

[0061] S2. After the mold is closed, the delivery head 2092 corresponds to the vacuum joint 1055. At this time, the electric push rod 1054 pushes the chuck plate 1056 to move, so that the vacuum joint 1055 is connected to the combined outer mold 204. The magnetic attraction between the magnets 1058 drives the semi-annular seal 1061 to retract, and drives the first spring 1062 to deform. The semi-annular seal 1061 is separated from the inner wall of the semi-annular conical groove 210, so that the vacuum joint 1055 is connected to the combined outer mold 204. At this time, the vacuum equipment 1051 operates to vacuum the combined outer mold 204. After vacuuming, the electric push rod 1054 retracts, so that the vacuum joint 1055 is away from the combined outer mold 204, the magnet 1058 is separated, and the first spring 1062 drives the semi-annular seal 1061 to return to the original position and stick to the inner wall of the semi-annular conical groove 210, so that the combined outer mold 204 is sealed.

[0062] S3. After the vacuum operation of the combined outer mold 204 is completed, the conveying is continued so that the conveying head 2092 is aligned with the output pipe 1033. At this time, the cylinder 1031 drives the pipe clamp 1032 and the output pipe 1033 to move, and the output pipe 1033 is docked with the combined outer mold 204. The movement of the pipe clamp 1032 drives the gear rod 1034 and the gear valve 2093 to transmit, and the conveying head 2092 is opened. By continuing to apply force, the combined outer mold 204 is docked with the combined plug 207. After docking, the push rod 208 applies force to the semi-ring seal 1061 to maintain the sealing. At this time, the die-casting equipment 102 feeds the material into the combined outer mold 204 through the output pipe 1033 to start the casting operation;

[0063] S4. After the casting is completed, the raw material output assembly 103 is reset and separated from the conveying head 2092, and then the cast product is conveyed upward. When the pulley 2031 moves to the notch 107 position, the second spring 2032 applies a separation force to the combined outer mold 204, and the second motor 2022 drives the transmission shaft 2024 to rotate, and the transmission shaft 2024 drives the cam 2023 to rotate. The cam 2023 cooperates with the third spring 2065 to apply a reciprocating force to the rotating roller 2062, causing the connecting frame 2061 and the cross plate 2063 to vibrate. The cross plate 2063 drives the combined outer mold 204 to vibrate through the guide rod 2051 and the guide sleeve 2052 to perform a demoulding operation. After demoulding, the combined outer mold 204 is separated, the finished product is taken out, and then the continuous casting operation is continued in a cycle.

[0064] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A low-pressure casting device for an aluminum alloy pipe, comprising a die-casting mechanism, characterized in that: The die-casting mechanism is provided with a die-matching mechanism; The die-casting mechanism includes a base, a vacuum component is provided on the base, an annular plate and a die-casting device are fixedly mounted on the base, a notch is provided above the annular plate, and a raw material output component is provided on the die-casting device; The mold alignment mechanism includes a flip assembly, which is provided with a vibration assembly and a combined plug. The four sides of the flip table of the flip assembly are connected to elastic assemblies, and both sides of the elastic assembly are connected to mold-joining auxiliary assemblies. The two mold-joining auxiliary assemblies are connected to the mold-closing assembly and the two combined outer molds. The pulley of the clamping assembly runs on the inner wall of the annular plate, and one end of the clamping assembly is also connected to the combined outer mold. An inner mold assembly is arranged between the two combined outer molds. A semi-annular conical groove is opened inside the combined outer mold. A sealing assembly is arranged in the semi-annular conical groove. The sealing assembly is automatically opened by docking the combined outer mold with the vacuum assembly to perform vacuum operation.

2. The low-pressure casting device for aluminum alloy pipes according to claim 1, characterized in that: The raw material output assembly includes two cylinders, which are fixedly installed on the die-casting equipment. One end of the two cylinders is fixedly connected to a pipe clamp, and a plurality of gear rods are fixedly connected to the pipe clamp. An output pipe is installed through the pipe clamp, and the output pipe is set in the die-casting equipment.

3. The low-pressure casting device for aluminum alloy pipes according to claim 2, characterized in that: The flip assembly includes a fixed frame and a side plate. The fixed frame is fixedly connected to the base. A first motor is fixedly installed on the fixed frame. The output shaft of the first motor is fixedly connected to a rotating shaft. The rotating shaft is rotatably mounted on the fixed frame and the side plate through two bearings. The combined plug is fixedly mounted on the side plate, and a flip table is fixedly mounted on the rotating shaft.

4. The low-pressure casting device for aluminum alloy pipes according to claim 3, characterized in that: The vibration assembly includes a fixed plate, which is fixedly connected to the fixed frame. The second motor is fixedly installed on the fixed plate. The output shaft of the second motor is fixedly connected to the transmission shaft. The transmission shaft is rotatably mounted on the fixed plate through a bearing, and a cam is fixedly installed on the transmission shaft.

5. The low-pressure casting device for aluminum alloy pipes according to claim 4, characterized in that: The vacuum assembly includes a vacuum device, which is fixedly mounted on the base. The vacuum device is connected to a vacuum tube, which is connected to multiple vacuum joints. The same clamping plate is installed on the multiple vacuum joints. Multiple support rods are fixedly connected to the inside of the clamping plate. One side of the clamping plate is fixedly connected to an electric push rod, which is fixedly mounted on a mounting plate, and the mounting plate is fixedly connected to the base.

6. The low-pressure casting device for aluminum alloy pipes according to claim 5, characterized in that: The mold closing assembly includes a bracket and a movable rod. The movable rod is inserted into and slides in the bracket. One end of the movable rod is fixedly connected to a pulley. The other end of the movable rod is fixedly connected to one of the combined outer molds. A second spring is fixedly connected between the combined outer mold and the bracket.

7. The low-pressure casting device for aluminum alloy pipes according to claim 6, characterized in that: The inner mold assembly includes multiple inner mold structures. Each two combined outer molds are surrounded by the corresponding inner mold structure. A conveying head is installed at one end of the inner mold structure. The conveying head is docked with the two combined outer molds. The multiple conveying heads are fixed by a clamping plate, and a tooth valve is provided on the conveying head.

8. The low-pressure casting device for aluminum alloy pipes according to claim 7, characterized in that: The elastic component includes a connecting frame, on which a roller is rotatably mounted, each roller contacts a cam by rotating and switching, both ends of the connecting frame are fixedly connected to a cross plate, the cross plate slides on the slide rod, both ends of the slide rod are fixedly connected to two fixed blocks, the two fixed blocks are fixedly connected to another combined outer mold, and both sides of the cross plate are fixedly connected to a third spring, one end of the third spring is fixedly connected to the fixed block.

9. The low-pressure casting device for aluminum alloy pipes according to claim 8, characterized in that: The die paralleling auxiliary assembly includes two guide rods and a support shaft. The two ends of the two guide rods are fixedly connected to the cross plate and the bracket. The guide rods are slidably connected to a guide sleeve. Every two guide sleeves are fixedly connected to the corresponding combined outer molds. The two guide rods are mounted with a support plate. The support shaft is rotatably mounted on the support plate through a bearing. A gear is fixedly mounted on the support shaft. The gear meshes with two tooth plates. The two tooth plates are respectively fixedly connected to the two combined outer molds. The sealing assembly includes a semi-ring seal, which is arranged in a semi-ring conical groove. The two semi-ring seals are overlapped. One side of the semi-ring seal is fixedly connected to a first spring and a telescopic rod. One end of the first spring and the telescopic rod is fixedly connected to a fixing member. The fixing member is fixedly connected to the combined outer mold. Magnets are installed at multiple positions of each support rod and semi-ring seal, and adjacent magnets are magnetically attracted. Multiple push rods are fixedly connected to each cavity of the combined plug.

10. The method for using the low-pressure casting device for aluminum alloy pipes according to claim 9, characterized in that: The following steps are involved: S1. During the die-casting operation of the aluminum alloy pipe, the first motor drives the rotating shaft to rotate, which drives the turning table to rotate. The turning table drives the combined outer mold to rotate through the elastic component and the mold-joining auxiliary component, so that the mold-joining component moves, and the pulley moves along the notch toward the annular plate, so that the notch squeezes the pulley to move, and the pulley drives the movable rod to move, and the combined outer mold moves and drives the second spring to deform, and the combined outer mold drives the tooth plate to move. The two tooth plates generate relative motion through gear transmission, so that the two combined outer molds are joined on the conveying head and surrounded by the inner mold structure; S2. After the mold is closed, the delivery head corresponds to the vacuum joint. At this time, the electric push rod pushes the chuck plate to move, so that the vacuum joint is connected to the combined outer mold. The magnetic attraction between the magnets drives the semi-ring seal to retract and drives the deformation of the first spring. The semi-ring seal is separated from the inner wall of the semi-ring conical groove, so that the vacuum joint is connected to the combined outer mold. At this time, the vacuum equipment is operated to vacuum the combined outer mold. After vacuuming, the electric push rod retracts, so that the vacuum joint is away from the combined outer mold, the magnets are separated, and the first spring drives the semi-ring seal to return to the original position and stick to the inner wall of the semi-ring conical groove, so that the combined outer mold is sealed. S3. After the vacuum operation of the combined outer mold is completed, the conveying is continued so that the conveying head corresponds to the output pipe. At this time, the cylinder drives the pipe clamp and the output pipe to move, and the output pipe is docked with the combined outer mold. The movement of the pipe clamp drives the gear rod and the gear valve to drive, open the conveying head, and continue to apply force to dock the combined outer mold with the combined plug. After docking, the push rod applies force to the semi-ring seal to maintain sealing. At this time, the die-casting equipment feeds the material into the combined outer mold through the output pipe for casting operation; S4. After the casting is completed, the raw material output assembly is reset and separated from the conveying head, and then the finished casting is conveyed upward. When the pulley moves to the notch position, the second spring applies a separation force to the combined outer mold, and the second motor drives the transmission shaft to rotate, and the transmission shaft drives the cam to rotate. The cam cooperates with the third spring to apply a reciprocating force to the rotating roller, causing the connecting frame and the cross plate to vibrate. The cross plate drives the combined outer mold to vibrate through the guide rod and the guide sleeve to perform demoulding. After demoulding, the combined outer mold is separated, the finished product is taken out, and then the continuous casting operation is continued in a cycle.

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