Automatic adding system for die-casting molten aluminum

Abstract

The invention relates to the technical field of molten aluminum adding, and discloses a die-casting molten aluminum automatic adding system which comprises a heat preservation furnace, a conveying part for conveying molten aluminum is arranged at the output end of the heat preservation furnace, a die-casting die is arranged on the outer side of the conveying part, and the conveying part comprises an outer heat preservation pipe connected with the outer side of the heat preservation furnace; the inner transmission pipe is connected with the output end of the heat preservation furnace, and a channel is formed in the inner transmission pipe; the intercepting part is communicated with the interior of the inner transmission pipe, the intercepting part and the inner transmission pipe are vertically arranged, and the intercepting part comprises a push shaft I and a push shaft II which can move longitudinally. Through the motion logic that the first push shaft and the second push shaft synchronously move downwards under the driving of the hydraulic cylinder, then the second push shaft stops, and the first push shaft continues to move downwards for extrusion, an aluminum storage space with the specified volume is accurately formed, complete extrusion of molten aluminum is achieved, and high-precision control over the adding amount of the molten aluminum is achieved; and compared with pure gravity pouring, the pressurized conveying has the advantages that a mold cavity can be filled more quickly, and the defects of die castings can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of molten aluminum addition, in particular to an automatic molten aluminum addition system for die-casting. Background Art

[0002] Aluminum ingots or other raw materials are melted in a central melting furnace, and the molten aluminum is transferred to a holding furnace. Then, through a pneumatic pump or electromagnetic pump system, the aluminum liquid is pumped directly from the holding furnace to the pouring port of the die-casting machine barrel through a high-temperature resistant pipe, and then die-casting is performed by the die-casting machine.

[0003] When molten aluminum is transported through high-temperature resistant pipelines, the transport path is typically optimized to minimize distance and vibration, reducing oxidation and heat loss. However, the current practice of opening and closing valves during aluminum transport exposes the molten aluminum to the external environment. Aluminum oxide rapidly forms when exposed to air, particularly on the inner surface of the valve and in the "dead zone" after closure. This aluminum oxide accumulates and forms nodules, making valve operation difficult, requiring greater force to open and close, or even causing the valve to become completely stuck. The nodules prevent the valve from fully closing, resulting in a loose closure and continuous leakage of aluminum. Furthermore, unstable valve opening and closing can lead to unstable flow control. Nodules alter the shape of the channel, making it difficult to accurately control the flow rate, impacting downstream processes.

[0004] When molten aluminum runs in a high-temperature resistant pipe, if it comes into contact with oxygen or water vapor due to leakage or valve opening and closing, it will quickly oxidize to form oxides, causing nodules on the pipe wall or valve. Frequent opening and closing of valves during the die-casting process will repeatedly introduce fresh air, exacerbating oxidation. Based on this, it is necessary to improve the transmission of molten aluminum in the die-casting process. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic adding system for die casting liquid aluminum water to solve the problems raised in the above background technology.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an automatic adding system for die casting liquid aluminum water, including a holding furnace, the output end of the holding furnace has a transmission part for transmitting aluminum water, the outer side of the transmission part has a die casting mold, and the transmission part includes: External insulation pipe, connected to the outside of the insulation furnace; An inner transmission pipe is connected to the output end of the holding furnace and has a channel therein; The intercepting portion is connected to the interior of the inner transmission tube, and the two are arranged vertically. The intercepting portion includes a push shaft 1 and a push shaft 2 that can move longitudinally. There is a space for accommodating molten aluminum between the push shafts 1 and 2. When molten aluminum is added, the space between the push shafts 1 and 2 changes, pushing the molten aluminum in the inner transmission tube outward; The hydraulic cylinder is arranged at the lower end of the intercepting part and is used to drive the telescopic movement of the intercepting part.

[0007] A further preferred embodiment of the present invention is as follows: the intercepting portion further comprises an upper tube and a lower tube integrally provided on the upper and lower sides of the inner transmission tube, respectively; the upper tube and the lower tube have the same diameter and are coaxial; the first push shaft and the second push shaft are respectively located in the upper tube and the lower tube; the inner wall of the upper tube and the inner wall of the lower tube are respectively in contact with the outer wall of the first push shaft and the outer wall of the second push shaft; and the lower end surface of the push shaft and the upper end surface of the push shaft are respectively flush with the upper and lower surfaces of the channel; A support rod 1 is fixed to the upper end of the push shaft 1, a clamp is fixed to the outside of the support rod 1, a support rod 2 is fixed to the lower end face of the push shaft 2, a telescopic shaft is supported on the outside of the support rod 2, and the outer wall of the support rod 2 has a meshing notch extending along its axis. The clamp is clamped in the meshing notch near the upper end part. When the support rod 1 moves, it pushes the support rod 2 to move. After moving to the stroke of the telescopic shaft, the support rod 1 can continue to move.

[0008] A further preferred solution of the present invention is that: the support rod 1 is bent upward and extends downward, parallel to the support rod 2, the output end of the hydraulic cylinder is integrally provided with the support rod 1, and the movement stroke of the hydraulic cylinder is greater than the movement stroke of the telescopic shaft; The lower end of the intercepting part is provided with a bracket, a sheet metal piece is installed on the bracket, support rod one and support rod two pass through the sheet metal piece, the telescopic shaft is fixed on the sheet metal piece, and the hydraulic cylinder is located at the lower end of the sheet metal piece.

[0009] A further preferred solution of the present invention is that the cross-sections of the clamping portion and the meshing opening of the clamp are both triangular.

[0010] A further preferred solution of the present invention is: a casting pipe is integrally formed on the outer side of the lower tube, the interior of the casting pipe is connected to the interior of the lower tube, and the die-casting mold is connected to the outer side of the casting pipe. When molten aluminum is added to the intercepting part, the space between the push shaft one and the push shaft two moves to the extension direction of the casting pipe, and as the addition is made, the space between the push shaft one and the push shaft two gradually becomes smaller until they fit together.

[0011] A further preferred solution of the present invention is that the channel has a rectangular cross-section, and its four corners are all rounded and smoothly transitioned.

[0012] A further preferred solution of the present invention is that the outward sides of the push shaft 1 and the push shaft 2 are flush with the upper tube and the lower tube respectively, and the movement stroke of the push shaft 1 and the push shaft 2 is less than the length of the push shaft 1.

[0013] A further preferred solution of the present invention is that the outer insulation pipe is divided into two parts, covering the outer wall of the inner transmission pipe, and has an insulation layer inside.

[0014] A further preferred solution of the present invention is that the die-casting mold is divided into an upper and a lower part, and the pouring tube is connected to the fixed part of the lower end of the die-casting mold.

[0015] A further preferred solution of the present invention is that the inner transmission tube, upper tube, lower tube, push shaft one and push shaft two are all made of silicon nitride bonded silicon carbide ceramic or pure hot-pressed silicon nitride ceramic.

[0016] Compared with the prior art, the advantages of the present invention are: 1. Through the synchronous downward movement of push shafts 1 and 2 driven by hydraulic cylinders, after which push shaft 2 stops and push shaft 1 continues to move downward, an aluminum storage space of a specified volume is accurately formed and complete extrusion of molten aluminum is achieved. This achieves highly precise control of the amount of molten aluminum added. In addition, compared with simple gravity pouring, this pressurized delivery can fill the mold cavity faster, helping to reduce defects in die-casting parts.

[0017] 2. When the addition of molten aluminum is completed, the push shaft 1 and the push shaft 2 are reset in a fitted state to prevent the external environment gas from affecting the molten aluminum in the channel. After that, in the reset state, the molten aluminum will fill the space between the push shaft 1 and the push shaft 2 to prevent the molten aluminum from being exposed to the air, thereby achieving a sealed and flat channel and reducing oxidation and heat loss.

[0018] 3. The channel cross section is rectangular and the corners are rounded with smooth transitions. The inner wall is continuous and smooth. Push shaft 1 and push shaft 2 slide in close proximity, leaving no gap during movement, and no residue after extrusion, effectively preventing nodule formation.

[0019] 4. In the reset state, the side of the push shaft 2 completely blocks the connection between the pouring pipe and the lower pipe, forming a physical barrier. Even if the molten aluminum tries to flow backward from the die-casting mold through the pouring pipe due to pressure during the die-casting process, it can be effectively blocked to prevent the backflow of molten aluminum and contamination, and also ensure the stability of the amount of die-casting aluminum water during the die-casting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings only conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the transmission part and die-casting mold structure of the present invention; Figure 3 This is a schematic diagram of the structure of a transmission section of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the outer insulation pipe and the inner transmission pipe of the present invention; Figure 5 This is a schematic diagram of the half-section structure of the inner transmission tube of the present invention along the upper tube and the lower tube; Figure 6 This is a schematic diagram of the structure of the push shaft 1 and the push shaft 2 moving downward during pouring; Figure 7 This is a schematic diagram of the structure of the push shaft 1 and the push shaft 2 after they move to their strokes; Figure 8 This is a schematic diagram of the upward reset structure of the push shaft 1 and the push shaft 2 of the present invention; Figure 9 This is a schematic diagram of the exploded structure of the push shaft 1 and the push shaft 2, the upper tube and the lower tube of the present invention; Figure 10 This invention Figure 9 Schematic diagram of the locally enlarged structure of A in the middle.

[0022] In the figure: 1. Insulation furnace; 2. Bracket; 3. Transmission part; 31. Outer insulation pipe; 32. Inner transmission pipe; 321. Channel; 33. Cut-off part; 331. Upper pipe; 332. Lower pipe; 333. Push shaft 1; 334. Support rod 1; 335. Push shaft 2; 336. Support rod 2; 337. Clamp; 338. Telescopic shaft; 339. Casting pipe; 34. Sheet metal; 35. Hydraulic cylinder; 4. Die-casting mold. DETAILED DESCRIPTION

[0023] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0024] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0025] See also Figures 1-10 The present invention provides a technical solution: a die-casting liquid aluminum water automatic adding system, such as Figure 1-Figure 5 As shown, it includes a holding furnace 1, the output end of the holding furnace 1 has a transmission part 3 for transmitting molten aluminum, the outer side of the transmission part 3 has a die-casting mold 4, and the transmission part 3 includes: The outer insulation pipe 31 is connected to the outer side of the insulation furnace 1; The inner transmission pipe 32 is connected to the output end of the holding furnace 1 and has a channel 321 therein; The shutoff portion 33 is connected to the interior of the inner transmission tube 32, and the two are arranged vertically. The shutoff portion 33 includes a longitudinally movable push shaft 1 333 and a second push shaft 335. There is a space between the push shaft 1 333 and the push shaft 2 335 to accommodate molten aluminum. When molten aluminum is added, the space between the push shaft 1 333 and the push shaft 2 335 changes, pushing the molten aluminum in the inner transmission tube 32 outward. The hydraulic cylinder 35 is provided at the lower end of the intercepting portion 33 and is used to drive the intercepting portion 33 to move in a telescopic manner.

[0026] Specifically, the outer side of the holding furnace 1 is connected to a transmission unit 3 for transmitting molten aluminum. The transmission unit 3 includes an outer insulation pipe 31 for insulating the transmitted molten aluminum, an inner transmission pipe 32 connected to the holding furnace 1, and transmitting the molten aluminum within the holding furnace 1. A cutoff unit 33 is provided on the inner transmission pipe 32 and is driven by a hydraulic cylinder 35 to rotate the molten aluminum within the inner transmission pipe 32, thereby achieving quantitative movement into the die-casting mold 4. It should be noted that the holding furnace 1 is a device for holding molten aluminum in the prior art, and the transmission of the molten aluminum is also a prior art. The molten aluminum can be transmitted along the inner transmission pipe 32 by a pneumatic pump or an electromagnetic pump system.

[0027] like Figure 5 The figure shows the initial state of the intercepting portion 33. Figure 6 and Figure 7 The diagram shows the state of the intercepting portion 33 transmitting the molten aluminum. Figure 8 The cut-off portion 33 is reset to the process diagram. Figure 5 The shut-off portion 33 further includes an upper tube 331 and a lower tube 332 integrally provided on the upper and lower sides of the inner transmission tube 32, respectively. The upper tube 331 and the lower tube 332 have the same diameter and are coaxial. The push shaft 1 333 and the push shaft 2 335 are respectively located in the upper tube 331 and the lower tube 332. The inner wall of the upper tube 331 and the inner wall of the lower tube 332 are respectively fitted with the outer wall of the push shaft 1 333 and the outer wall of the push shaft 2 335. The lower end surface of the push shaft 1 333 and the upper end surface of the push shaft 2 335 are respectively flush with the upper and lower surfaces of the channel 321. It should be noted that the lower end surface of the push shaft 1 333 and the upper end surface of the push shaft 2 335 are respectively flush with the upper and lower surfaces of the channel 321, so that the interior of the channel 321 is in a flat state, which can avoid reducing aluminum oxidation and heat loss during the movement of aluminum liquid, and can also avoid the formation of nodules. A support rod 1 334 is fixed to the upper end of the push shaft 1 333, and a clamp 337 is fixed to the outside of the support rod 1 334. A support rod 2 336 is fixed to the lower end face of the push shaft 2 335, and a telescopic shaft 338 is supported on the outside of the support rod 2 336. The outer wall of the support rod 2 336 has a meshing notch extending along its axis, and the clamp 337 is clamped in the meshing notch near the upper end part. When the support rod 1 334 moves, it pushes the support rod 2 336 to move. After moving to the stroke of the telescopic shaft 338, the support rod 1 334 can continue to move.

[0028] Specifically, the intercepting portion 33 includes an upper tube 331 and a lower tube 332 integrally arranged with the inner transmission tube 32, and the push shaft 1 333 and the push shaft 2 335 are respectively slidably arranged in the upper tube 331 and the lower tube 332, the support rod 1 334 is fixed to the push shaft 1 333, and the support rod 2 336 is fixed to the push shaft 2 335, and the telescopic shaft 338 is used to control the movement stroke of the support rod 2 336, so that the movement stroke of the support rod 2 336 is smaller than the support rod 1 334. Under the action of the hydraulic cylinder 35, the push shaft 1 333 and the push shaft 2 335 are moved up and down, and the push shaft 2 335 reaches the maximum operating stroke first, and the push shaft 1 333 can continue to move after the push shaft 2 335 stops, so as to ensure that there is space between the push shaft 1 333 and the push shaft 2 335 to hold the molten aluminum in a certain amount, and the push shaft 1 333 and the push shaft 2 335 can also fit together to squeeze the molten aluminum outward. It should be noted that the clamp 337 clamps the second support rod 336. The clamp 337 is U-shaped when viewed from above and has elasticity. After clamping the second support rod 336, it is buckled into the meshing mouth.

[0029] like Figure 9 As shown, the support rod 1 334 is bent from the top and extends downward, parallel to the support rod 2 336. The output end of the hydraulic cylinder 35 is integrally provided with the support rod 1 334, and the movement stroke of the hydraulic cylinder 35 is greater than the movement stroke of the telescopic shaft 338. The lower end of the intercepting portion 33 is provided with a bracket 2, on which a sheet metal piece 34 is mounted. A support rod 1 334 and a support rod 2 336 pass through the sheet metal piece 34, a telescopic shaft 338 is fixed on the sheet metal piece 34, and a hydraulic cylinder 35 is located at the lower end of the sheet metal piece 34.

[0030] Specifically, the shapes of support rod 1 334 and support rod 2 336 are parallel. Under the driving action of hydraulic cylinder 35, support rod 1 334 and support rod 2 336 clamped by clamp 337 move synchronously. Molten aluminum fills the gap between support rod 1 334 and support rod 2 336 to achieve downward movement. Then, due to the stroke problem of support rod 2 336, push shaft 1 333 and push shaft 2 335 contact each other. It should be noted that the function of sheet metal 34 is to support telescopic shaft 338 and limit support rod 1 334 and support rod 2 336, so that support rod 1 334 and support rod 2 336 pass through sheet metal 34 and move downward along sheet metal 34, which also suppresses the vibration generated by the movement of support rod 1 334 and support rod 2 336 to a certain extent.

[0031] like Figure 10 As shown, the cross-section of the clamping part and the cross-section of the meshing mouth of the clamp 337 are both triangular. When the position of the support rod 2 336 with the meshing mouth remains unchanged, the clamp 337 has a driving force, and the clamp 337 can move along the arranged meshing mouth due to its shape.

[0032] like Figure 7 As shown, a casting tube 339 is integrally formed on the outer side of the lower tube 332, the interior of the casting tube 339 is connected to the interior of the lower tube 332, and the die-casting mold 4 is connected to the outer side of the casting tube 339. When molten aluminum is added to the intercepting portion 33, the space between the push shaft 1 333 and the push shaft 2 335 moves to the extension direction of the casting tube 339, and as the addition is continued, the space between the push shaft 1 333 and the push shaft 2 335 gradually becomes smaller until they fit together.

[0033] Specifically, the pouring tube 339 is used to connect the die-casting mold 4 and the lower tube 332. It should be noted that although the pouring tube 339 achieves a transmission function, after the push shaft 1 333 and the push shaft 2 335 are reset, the inner end of the pouring tube 339 is blocked by the push shaft 2 335 to avoid communication with the lower tube 332. Therefore, during the die-casting process, even if there is molten aluminum moving in the opposite direction along the pouring tube 339, the molten aluminum can be prevented from moving into the lower tube 332. It should also be noted that the push shaft 1 333 and the push shaft 2 335 squeeze the molten aluminum in the extension direction of the pouring tube 339, so that the molten aluminum can be squeezed into the die-casting mold 4 along the pouring tube 339 under the action of pressure, and will not cause reverse flow.

[0034] like Figure 9 As shown, the channel 321 has a rectangular cross-section, and its four corners are all rounded and smoothly transitioned.

[0035] Specifically, the rectangular shape of channel 321 allows the inward ends of push shafts 1 333 and 2 335 to be flush with the inner wall of channel 321, avoiding uneven areas and the formation of nodules. This allows channel 321 to smoothly transport molten aluminum. Meanwhile, the inner transfer tube 32 can be configured in a U-shape to reverse the transported molten aluminum back into the holding furnace 1 for further heat preservation.

[0036] like Figure 9 As shown, the outward sides of the push shaft 1 333 and the push shaft 2 335 are flush with the upper tube 331 and the lower tube 332 respectively, and the movement stroke of the push shaft 1 333 and the push shaft 2 335 is less than the length of the push shaft 1 333 .

[0037] Specifically, during the up and down movement of the push shaft 1 333 and the push shaft 2 335 , the push shaft 1 333 is kept in the upper tube 331 and the push shaft 2 335 is kept in the lower tube 332 to prevent leakage of molten aluminum.

[0038] like Figure 4 As shown, the outer insulation pipe 31 is divided into two parts and is coated on the outer wall of the inner transmission pipe 32, and has an insulation layer inside.

[0039] Specifically, the outer insulation pipe 31 can be installed and disassembled, and is a metal shell. The internal insulation layer is a resistance belt, which is used to heat the inner transmission pipe 32. This is the existing technology.

[0040] like Figure 4 and Figure 5 As shown, the die-casting mold 4 is divided into two parts, the upper and lower parts, and the pouring pipe 339 is connected to the fixed part of the lower end of the die-casting mold 4. Specifically, the die-casting mold 4 is also a setting existing in the prior art and will not be described here.

[0041] The inner transmission tube 32, the upper tube 331, the lower tube 332, the push shaft 1 333 and the push shaft 2 335 are all made of silicon nitride bonded silicon carbide ceramic or pure hot-pressed silicon nitride ceramic. It should be noted that silicon nitride bonded silicon carbide ceramic or pure hot-pressed silicon nitride ceramic is also a prior art.

[0042] The working principle of the present invention is as follows: when the insulation furnace 1 is working, the internal molten aluminum is transmitted along the transmission part 3 and moves from the inner transmission pipe 32. The outer side of the inner transmission pipe 32 is provided with an outer insulation pipe 31 for insulating it. When the molten aluminum is poured, the hydraulic cylinder 35 drives the interception part 33 to move in the up and down directions, and the molten aluminum inside the inner transmission pipe 32 is transferred and then squeezed into the pouring pipe 339, so that the molten aluminum moves into the die-casting mold 4.

[0043] Specifically, such as Figure 5 As shown, the push shaft 1 333 and the push shaft 2 335 are in the reset state, and the lower end surface of the push shaft 1 333 and the upper end surface of the push shaft 2 335 are flush with the inner wall of the channel 321. Then, under the action of the hydraulic cylinder 35, the support rod 1 334 is driven to move downward. Since the clamp 337 is engaged with the outer meshing of the support rod 2 336, the support rod 2 336 also moves downward, causing the push shaft 1 333 and the push shaft 2 335 to move downward synchronously, partially intercepting the molten aluminum in the inner transmission pipe 32, as shown in FIG. Figure 6 As shown, the telescopic shaft 338 is compressed to the maximum stroke, and the upper end surface of the push shaft 2 335 is located in the extension direction of the casting tube 339, that is, the transferred molten aluminum enters the casting tube 339, thereby entering the die-casting mold 4, and then Figure 7 As shown, the push shaft 1 333 continues to move downward under the action of the hydraulic cylinder 35, and because the telescopic shaft 338 is compressed to the maximum stroke, the clamp 337 slides downward along the meshing of the support rod 2 336, so that the end faces of the push shaft 1 333 and the push shaft 2 335 contact each other, and the contact position is located in the extension direction of the casting pipe 339, so that the transferred aluminum liquid is squeezed out, and then as shown in FIG. Figure 8As shown, the hydraulic cylinder 35 pushes the support rod 1 334 upward, causing the clamped support rod 2 336 to move upward, and the push shaft 1 333 and the push shaft 2 335 remain in a meshing state. Then, when the telescopic shaft 338 expands outward to the maximum stroke, the support rod 2 336 is fixed to prevent it from moving upward, while the push shaft 1 333 can continue to move upward, so that the clamp 337 slides upward along the meshing mouth on the support rod 2 336, as shown in FIG. Figure 5 As shown, reset is achieved, thereby completing an automatic addition of molten aluminum. Afterwards, the die-casting mold 4 is subjected to die-casting.

[0044] It should be noted that, when the push shaft 1 333 and the push shaft 2 335 move downward, the space between them is the space where the molten aluminum is stored, so that quantitative addition is achieved, and subsequently the space between them is squeezed, squeezing the molten aluminum outward, so that the molten aluminum can be quickly filled into the die-casting mold 4, achieving the most complete filling possible, while also avoiding nodules caused by the molten aluminum remaining between the push shaft 1 333 and the push shaft 2 335, and will not cause the problem of difficulty in accurately controlling the flow rate.

[0045] Subsequently, push shaft 1 333 and push shaft 2 335 return upward, placing them in contact. This prevents external air from flowing between them, protecting the molten aluminum within inner transfer tube 32 from the external environment. After push shaft 2 335 returns to its original position, push shaft 1 333 continues its upward movement, automatically filling the space between them with molten aluminum, achieving precise control.

[0046] During the die-casting process of the die-casting mold 4, molten aluminum may move in the opposite direction from the casting tube 339. However, the first and second push shafts 333 and 335 are in their reset positions, and the inner end of the casting tube 339 is blocked by the second push shaft 335. This creates a sealed structure. Even if the die-casting mold 4 causes the molten aluminum to move in the opposite direction along the casting tube 339, this can prevent any impact on the intercepting portion 33. It should also be noted that the die-cast aluminum material is in one or more integral units, and the aluminum material in the casting tube 339 can also be connected to the die-cast aluminum material, allowing the aluminum material in the casting tube 339 to be removed together. Furthermore, even if nodules form in the casting tube 339, this will not affect the quantitative transmission function of the intercepting portion 33.

[0047] It should also be noted that the molten aluminum moves through the space between the push shaft 1 333 and the push shaft 2 335, and the inner wall of the upper tube 331 and the inner wall of the lower tube 332 are respectively in contact with the outer wall of the push shaft 1 333 and the outer wall of the push shaft 2 335. Therefore, no nodules will be formed on the outer sides of the push shaft 1 333 and the push shaft 2 335 due to the contact effect. At the same time, the channel 321 in the inner transmission tube 32 is in a smooth state, and the inner transmission tube 32 and the insulation furnace 1 can also circulate, which can greatly avoid the formation of nodules or aluminum oxide in the channel 321.

[0048] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0049] The above is a detailed introduction to the automatic addition system for die-casting liquid aluminum provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in several ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An automatic adding system for die casting liquid aluminum water, comprising a heat preservation furnace, an output end of the heat preservation furnace having a transmission part for transmitting aluminum water, and a die casting mold outside the transmission part, characterized in that: The transmission department includes: External insulation pipe, connected to the outside of the insulation furnace; An inner transmission pipe is connected to the output end of the holding furnace and has a channel therein; The intercepting portion is connected to the interior of the inner transmission tube, and the two are arranged vertically. The intercepting portion includes a push shaft 1 and a push shaft 2 that can move longitudinally. There is a space for accommodating molten aluminum between the push shafts 1 and 2. When molten aluminum is added, the space between the push shafts 1 and 2 changes, pushing the molten aluminum in the inner transmission tube outward; The hydraulic cylinder is arranged at the lower end of the intercepting part and is used to drive the telescopic movement of the intercepting part.

2. The automatic adding system for die casting liquid aluminum according to claim 1, characterized in that: The intercepting portion further includes an upper tube and a lower tube integrally provided on the upper and lower sides of the inner transmission tube, respectively. The upper tube and the lower tube have the same diameter and are coaxial. The push shaft 1 and the push shaft 2 are respectively located in the upper tube and the lower tube. The inner wall of the upper tube and the inner wall of the lower tube are respectively in contact with the outer wall of the push shaft 1 and the outer wall of the push shaft 2. The lower end surface of the push shaft and the upper end surface of the push shaft 2 are respectively flush with the upper and lower surfaces of the channel. A support rod 1 is fixed to the upper end of the push shaft 1, a clamp is fixed to the outside of the support rod 1, a support rod 2 is fixed to the lower end face of the push shaft 2, a telescopic shaft is supported on the outside of the support rod 2, and the outer wall of the support rod 2 has a meshing notch extending along its axis. The clamp is clamped in the meshing notch near the upper end part. When the support rod 1 moves, it pushes the support rod 2 to move. After moving to the stroke of the telescopic shaft, the support rod 1 can continue to move.

3. The automatic adding system for die casting liquid aluminum according to claim 2, characterized in that: The support rod 1 is bent upward and extends downward, parallel to the support rod 2, the output end of the hydraulic cylinder is integrally provided with the support rod 1, and the movement stroke of the hydraulic cylinder is greater than the movement stroke of the telescopic shaft; The lower end of the intercepting part is provided with a bracket, a sheet metal piece is installed on the bracket, support rod one and support rod two pass through the sheet metal piece, the telescopic shaft is fixed on the sheet metal piece, and the hydraulic cylinder is located at the lower end of the sheet metal piece.

4. The automatic adding system for die casting liquid aluminum according to claim 2, characterized in that: The cross sections of the clamping portion and the meshing opening of the clamp are both triangular.

5. The automatic adding system for die casting liquid aluminum according to claim 2, characterized in that: A pouring pipe is integrally formed on the outer side of the lower tube, the interior of the pouring pipe is connected to the interior of the lower tube, and the die-casting mold is connected to the outer side of the pouring pipe. When molten aluminum is added to the intercepting part, the space between the push shaft one and the push shaft two moves in the extension direction of the pouring pipe, and as the addition is made, the space between the push shaft one and the push shaft two gradually becomes smaller until they fit together.

6. The automatic adding system for die casting liquid aluminum according to claim 1, characterized in that: The channel has a rectangular cross section, and its four corners are all rounded and have a smooth transition.

7. The automatic adding system for die casting liquid aluminum according to claim 2, characterized in that: The outward sides of the push shaft 1 and the push shaft 2 are flush with the upper tube and the lower tube respectively, and the movement stroke of the push shaft 1 and the push shaft 2 is less than the length of the push shaft 1.

8. The automatic adding system for die casting liquid aluminum according to claim 5, characterized in that: The outer insulation pipe is divided into two parts and is coated on the outer wall of the inner transmission pipe, and has an insulation layer inside.

9. The automatic adding system for die casting liquid aluminum according to claim 5, characterized in that: The die-casting mold is divided into two parts, an upper part and an lower part, and the pouring pipe is connected to the fixed part of the lower end of the die-casting mold.

10. The automatic adding system for die casting liquid aluminum according to claim 1, characterized in that: The inner transmission tube, upper tube, lower tube, push shaft one and push shaft two are all made of silicon nitride combined with silicon carbide ceramic or pure hot-pressed silicon nitride ceramic.

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