Infiltration equipment for filling holes in die casting

Abstract

The invention relates to the technical field of casting machining, in particular to infiltration equipment used for filling holes of a die casting, the infiltration equipment comprises a tank body, an air pump structure located outside the tank body and an infiltration cage located inside the tank body, the infiltration cage is used for containing the casting, and the tank body is composed of a vacuum tank and an infiltration tank which are distributed up and down; and the vacuum tank is communicated with the infiltration tank. By means of the method, the defect that a casting is exposed to the external environment in a traditional infiltration process is effectively overcome, the casting is directly submerged and isolated through infiltration liquid in the vacuum low-pressure environment, pores in the casting are prevented from sucking air again under the normal pressure, it is guaranteed that the vacuum environment in the pores is effective for a long time, and the service life of the casting is prolonged. And then the infiltration liquid is squeezed into the pores in a pressurizing mode, so that the infiltration work of the casting is completed, the filling effect of the pores is effectively improved, the product quality of the casting is improved, meanwhile, the mode is high in continuity, and the casting does not need to be frequently transferred.

Description

Technical Field

[0001] This invention relates to the field of casting processing technology, and more particularly to an impregnation device for filling pores in die-cast parts. Background Technology

[0002] Die castings are widely used in industries such as automobiles and aerospace, but they often have defects such as micropores and shrinkage cavities, which affect their airtightness and mechanical properties. Impregnation is a key process that improves the reliability of castings by filling the pores with a sealant. Traditional impregnation methods usually involve two steps: first, the casting is evacuated in a vacuum tank to remove the gas from the pores; then, the tank is opened and the casting is transferred to an impregnation tank containing impregnation liquid for pressure impregnation.

[0003] However, this traditional process has significant technical limitations. During the transfer process, the casting is briefly exposed to the atmospheric environment, causing external air to re-infiltrate into the emptied pores. This is especially true for larger pores, where air is more likely to enter and remain, causing the previously established vacuum environment to partially fail. The residual gas in the pores will create air resistance during subsequent pressurized impregnation, hindering the impregnating liquid from fully filling the pores and easily forming unsealed areas, which directly affects the impregnation pass rate and the service life of the casting. Summary of the Invention

[0004] This invention provides an impregnation device for filling pores in die-cast parts, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An impregnation device for filling pores in die-cast parts includes a tank, an air pump structure located outside the tank, and an impregnation cage located inside the tank. The impregnation cage is used to hold the casting. The tank consists of a vacuum tank and an impregnation tank arranged vertically. The vacuum tank and the impregnation tank are interconnected. The air pump structure evacuates the vacuum tank or pressurizes the impregnation tank. The impregnation tank stores impregnating liquid and is equipped with a piston disc that can move vertically inside the impregnation tank. The impregnation tank is provided with a sealing structure for isolating the impregnation tank.

[0006] Furthermore, several impregnation tanks are provided, and the several impregnation tanks are arranged in a linear or circular manner. The several impregnation tanks are moved sequentially to the bottom of the vacuum tank and connected to each other for use.

[0007] Furthermore, the vacuum tank is provided with a support structure for fixing the impregnation cage. The support structure includes a plurality of transmission wheels rotatably disposed on the inner wall of the vacuum tank and a power ring that is connected to each of the transmission wheels. Each of the transmission wheels is provided with an arc arm.

[0008] Furthermore, the radius of the arc arm is equal to the inner diameter of the vacuum tank, and each arc arm is provided with a post and a locking hole, wherein the post on the arc arm is used in conjunction with the locking hole on the adjacent arc arm.

[0009] Furthermore, the sealing structure includes a plurality of conveying channels arranged around the circumference of the impregnation tank, a sealing plate slidably disposed in each of the conveying channels, and a cylinder for providing power for the movement of the sealing plate. When the plurality of sealing plates approach and abut against each other, the plurality of sealing plates seal the opening at the top of the impregnation tank.

[0010] Furthermore, a connecting shaft is provided on the outer wall of the impregnation cage, and a rotating body that cooperates with the connecting shaft is provided inside the impregnation tank.

[0011] Furthermore, the rotating body includes a fixed sleeve installed on the outer wall of the impregnation tank, a movable sleeve slidably located within the fixed sleeve, and a rotating column located within the movable sleeve and rotatably disposed relative to the fixed sleeve, wherein a slot is provided at the end of the rotating column; A locking block is provided on the outer wall of the connecting shaft, and the end face of the locking block away from the connecting shaft is used to cooperate with the circumferential outer wall of the rotating column.

[0012] Furthermore, four connecting shafts are provided, and the four connecting shafts are distributed in a square shape around the impregnation cage on the horizontal plane; Four rotating bodies are provided, and each rotating body is correspondingly arranged with the connecting shaft. A through groove is opened on the end face of the rotating column on each rotating body. The through groove is perpendicular to the slot, and the through grooves on two adjacent rotating bodies are perpendicular to each other.

[0013] Furthermore, a support column is slidably inserted on the piston disc, the support column is used to support the impregnation cage, the support column is connected to the piston disc by a spring, and the piston disc is provided with a storage groove for use with each of the rotating bodies. A lifting structure for moving the piston disc and the support column is provided at the bottom of the piston disc. The lifting structure includes a toothed column and a toothed plate that cooperate with each other. The toothed column and the toothed plate are respectively set in the impregnation tank through a side support column and a cylinder. A lifting arm is provided on the toothed column. The lifting arm is rotatably connected to the storage groove through a lifting arm.

[0014] Furthermore, the air pump structure includes a pump body disposed on the vacuum tank and a reversing valve disposed on the impregnation tank. The input end of the pump body is connected to the vacuum tank through a first pipe body. A secondary pipe and a control valve are disposed on the first pipe body. The output end of the pump body is disposed on a second pipe body. A pipe body three is provided at the input end of the reversing valve. The pipe body two and the pipe body three are connected by a sleeve, and the sleeve is pushed by a cylinder three and connected to or separated from the pipe body three. A pipe body four and a pipe body five are respectively provided on the two output ends of the reversing valve. The pipe body four is connected to the upper space of the piston disc, and the pipe body five is connected to the lower space of the piston disc.

[0015] The technical solution of this invention can achieve the following technical effects: This method effectively solves the drawbacks of traditional impregnation processes where castings are exposed to the external environment. It allows castings to be directly submerged and isolated by the impregnation liquid in a vacuum and low-pressure environment, preventing the pores on the casting from re-absorbing air under normal pressure. This ensures that the vacuum environment within the pores remains effective for a long time. The impregnation liquid is then forced into the pores by applying pressure, thus completing the impregnation process. This method effectively improves the pore filling effect and enhances the quality of the casting. Furthermore, this method is highly consistent and eliminates the need for frequent transfer of castings.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an impregnation device used for filling pores in die-cast parts; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 A schematic diagram showing the use of a vacuum tank in conjunction with several impregnation tanks; Figure 4 This is a schematic diagram of the vacuum tank. Figure 5 This is a schematic diagram of the impregnation tank. Figure 6 for Figure 5 A structural diagram from another perspective; Figure 7 for Figure 6 A cross-sectional view of the fixed sleeve. Figure 8 This is a schematic diagram of the impregnation cage structure; Figure 9 This is a schematic diagram of the piston disc structure; Figure 10 for Figure 9 A structural diagram from another perspective; Figure 11 for Figure 10 A schematic diagram of the lifting structure; Reference numerals: 100, vacuum tank; 101, drive wheel; 102, power ring; 103, arc arm; 104, insertion post; 200. Impregnation tank; 201. Piston disc; 202. Conveying channel; 203. Sealing plate; 204. Cylinder 1; 205. Fixed sleeve; 206. Movable sleeve; 207. Rotating column; 208. Slot; 209. Through groove; 210. Support column; 211. Storage slot; 212. Spring; 213. Lifting structure; 214. Gear column; 215. Gear plate; 216. Side support column; 217. Cylinder 2; 218. Lifting arm 1; 219. Lifting arm 2; 220. Synchronizing gear; 300. Air pump structure; 301. Pump body; 302. Pipe body one; 303. Pipe body two; 304. Reversing valve; 305. Pipe body three; 306. Pipe body four; 307. Pipe body five; 308. Sub-pipe; 309. Control valve; 310. Sleeve; 311. Cylinder three; 400, Impregnation cage; 401, Connecting shaft; 402, Clamping block. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] like Figures 1 to 2As shown, this application provides an impregnation device for filling the pores of die-cast parts, including a tank body, an air pump structure 300 located outside the tank body, and an impregnation cage 400 located inside the tank body. The impregnation cage 400 is used to hold the casting. The tank body is composed of a vacuum tank 100 and an impregnation tank 200 arranged vertically. The vacuum tank 100 and the impregnation tank 200 are interconnected. The air pump structure 300 evacuates the vacuum tank 100 or pressurizes the impregnation tank 200. The impregnation tank 200 stores impregnation liquid inside, and a piston disc 201 that can move vertically is provided inside the impregnation tank 200. A sealing structure for isolating the impregnation tank 200 is provided on the impregnation tank 200.

[0022] Specifically, the vacuum tank 100 is located on top of the impregnation tank 200. The opening at the bottom of the vacuum tank 100 and the opening at the top of the impregnation tank 200 are interconnected, allowing a vacuum environment to be created inside the vacuum tank 100. The impregnation tank 200 stores the impregnating liquid, and the vacuum environment and the impregnating liquid do not interfere with each other. The interconnection between the vacuum tank 100 and the impregnation tank 200 also allows the impregnation cage 400 to move between the two tanks. This allows the impregnation cage 400 and the castings inside it to operate within the vacuum environment or... The device is immersed in the impregnation solution. If the vacuum tank 100 and the impregnation tank 200 are distributed in other ways, the above functions cannot be achieved. The piston plate 201 in the impregnation tank 200 can move up and down. When the piston plate 201 moves up, it can push the impregnation solution from the impregnation tank 200 into the vacuum tank 100 and submerge the impregnation cage 400. When the piston plate 201 moves down, the impregnation solution can fall back from the vacuum tank 100 into the impregnation tank 200, and the impregnation cage 400 can move from the vacuum tank 100 into the impregnation tank 200 along with the piston plate 201.

[0023] To fix the position of the impregnation cage 400 inside the vacuum tank 100, a clamping structure or other structure for fixing the impregnation cage 400 can be provided inside the vacuum tank 100. When the piston disc 201 lifts the bottom of the impregnation cage 400, the fixing of the impregnation cage 400 stops, and the impregnation cage 400 can move down synchronously with the piston disc 201. The independent setting of the vacuum tank 100 and the impregnation tank 200 can conveniently provide an independent environment for different processing processes of the casting.

[0024] In use, open the lid of the vacuum tank 100 and move the impregnation cage 400 containing the casting into the vacuum tank 100. Then close the lid to seal the vacuum tank 100. Use the air pump structure 300 to remove the air from the inside of the vacuum tank 100, so that the impregnation cage 400 and the casting inside are in a vacuum environment. The air in the pores of the casting is discharged, which facilitates the subsequent entry of the impregnation liquid into the pores and avoids the air in the pores forming air resistance and hindering the entry of the impregnation liquid. When the air pressure inside the vacuum tank 100 reaches the specified requirement, move the piston plate 201 upward, so that the piston plate 201 pushes the impregnation liquid in the impregnation tank 200 upward into the vacuum tank 100, submerging the impregnation cage 400 and the casting. At this time, the casting is in a vacuum environment, so the submersion of the impregnation liquid can directly isolate the air. When the piston disc 201 moves down, the impregnation cage 400 moves from the vacuum tank 100 into the impregnation tank 200 along with the piston disc 201. The impregnation liquid flows into the impregnation tank 200 at the same time. The impregnation liquid keeps the impregnation cage 400 and the casting inside it submerged and isolated. The top opening of the impregnation tank 200 is sealed by the sealing structure to separate the vacuum tank 100 from the impregnation tank 200. The air pump structure 300 introduces air into the impregnation tank 200, which increases the pressure inside the impregnation tank 200 and the pressure of the impregnation liquid. Thus, the high pressure forces the impregnation liquid into the pores in the vacuum low-pressure state, realizing the impregnation of the casting.

[0025] In some embodiments, when the impregnation liquid enters the vacuum tank 100 and submerges the impregnation cage 400 and the casting inside, the air pump structure 300 can be used to directly pressurize the inside of the vacuum tank 100 so that the casting can complete the high-pressure impregnation work inside the vacuum tank 100. However, since the common environment of the vacuum tank 100 is vacuum and low pressure, if the vacuum tank 100 needs to be used in a high-pressure environment, the materials and structure of the vacuum tank 100 need to be improved and upgraded. The technical solution of this invention effectively solves the drawback of traditional impregnation processes where castings are exposed to the external environment. It allows castings to be directly submerged and isolated by impregnation liquid in a vacuum and low-pressure environment, preventing the pores on the castings from re-absorbing air under normal pressure and ensuring that the vacuum environment in the pores is effective for a long time. Then, the impregnation liquid is squeezed into the pores by pressurization, thereby completing the impregnation of the castings. This effectively improves the pore filling effect and the quality of the casting products. At the same time, this method has strong continuity and does not require frequent transfer of castings.

[0026] Furthermore, there are several impregnation tanks 200, which are arranged in a linear or circular pattern. The impregnation tanks 200 are moved sequentially to the bottom of the vacuum tank 100 and connected to each other for use.

[0027] When the casting is expelled from the pores in the vacuum tank 100 by using a vacuum, the speed is relatively fast, resulting in a short residence time for the casting in the vacuum tank 100. However, during impregnation, due to the need for pressure holding, the residence time of the casting in the impregnation tank 200 is longer. If a combination of one vacuum tank 100 and one impregnation tank 200 is used, the vacuum tank 100 cannot be used when the casting is impregnated under pressure in the impregnation tank 200, resulting in resource waste. By using a combination of one vacuum tank 100 and several impregnation tanks 200, the vacuum tank 100 can continuously provide a vacuum environment for different impregnation cages 400 and the castings within them, and several impregnation tanks 200 can provide a pressure-holding impregnation environment for different impregnation cages 400 and the castings within them. This facilitates continuous use of the vacuum tank 100, improving resource utilization and work efficiency.

[0028] The sealing structure on each impregnation tank 200 can seal the top opening of the impregnation tank 200 when it is separated from the vacuum tank 100, thus maintaining a continuous high-pressure state inside the impregnation tank 200; for example Figure 3 As shown, the impregnation tanks 200 are arranged in a linear manner. The impregnation tanks 200 move laterally one by one to the bottom of the vacuum tank 100 and connect with each other, so that the vacuum tank 100 and each impregnation tank 200 can be used in combination. Of course, the impregnation tanks 200 can also be arranged in a ring or other manner to form the effect of the impregnation tanks 200 being used in a cycle.

[0029] In some embodiments, the vacuum tank 100 or the impregnation tank 200 may also have a vertical movement function. When the impregnation tank 200 is replaced, the vacuum tank 100 and the impregnation tank 200 will have a relative displacement in the vertical direction. This facilitates the impregnation tank 200 to move laterally and away from the vacuum tank 100. When the next impregnation tank 200 moves to the bottom of the vacuum tank 100, the vacuum tank 100 and the impregnation tank 200 can be brought closer to each other again in the vertical direction and pressed together, thereby facilitating the connection and sealing of the vacuum tank 100 and the impregnation tank 200.

[0030] In addition to the horizontal separation method, the vacuum tank 100 and the impregnation tank 200 can also be vertically moved and separated from the vacuum tank 100. That is, each impregnation tank 200 that moves to the bottom of the vacuum tank 100 can move away from the vacuum tank 100 in the vertical direction. As long as the above-mentioned combination of the vacuum tank 100 and several impregnation tanks 200 can be achieved, it is within the protection scope of this case.

[0031] Furthermore, such as Figure 4As shown, the vacuum tank 100 is provided with a support structure for fixing the impregnation cage 400. The support structure includes a number of transmission wheels 101 rotatably disposed on the inner wall of the vacuum tank 100 and a power ring 102 that is connected to each transmission wheel 101. Each transmission wheel 101 is provided with an arc arm 103.

[0032] A number of drive wheels 101 are arranged in a ring and rotatably mounted on the inner wall of the vacuum tank 100. A power ring 102 is also rotatably mounted on the inner wall of the vacuum tank 100, and the power ring 102 is connected to each drive wheel 101. When the power ring 102 rotates, the drive wheels 101 will rotate synchronously in the same direction. At this time, a number of arc arms 103 move from near the inner wall of the vacuum tank 100 toward the axis of the vacuum tank 100. The arc arms 103 intersect each other. At this time, the impregnation cage 400 can be placed on the arc arms 103. When it is necessary to transfer from the inside of the vacuum tank 100 to the inside of the impregnation tank 200, the power ring 102 is rotated in the opposite direction, so that the arc arms 103 move away from each other. The space between the arc arms 103 can be used for the impregnation cage 400 to pass through. The rotational power of the power ring 102 can be provided by a motor.

[0033] Since the above method has several arc arms 103 located on the lower side of the impregnation cage 400, the arc arms 103 play a supporting role for the impregnation cage 400. When the several arc arms 103 are located on the outer wall of the impregnation cage 400, the several arc arms 103 can squeeze and clamp the outer wall of the impregnation cage 400, which can also achieve the fixation of the impregnation cage 400. However, this requires higher strength of the impregnation cage 400.

[0034] Furthermore, such as Figure 4 As shown, the radius of the arc arm 103 is equal to the inner diameter of the vacuum tank 100. Each arc arm 103 is provided with a post 104 and a locking hole. The post 104 on the arc arm 103 is used in conjunction with the locking hole on the adjacent arc arm 103.

[0035] When the arc arm 103 rotates and approaches the inner wall of the vacuum tank 100, since the radius of the arc arm 103 is equal to the inner diameter of the vacuum tank 100, the arc arm 103 can completely adhere to the inner wall of the vacuum tank 100, thereby forming a larger channel between the arc arms 103, which facilitates the passage of the impregnation cage 400. When the arc arms 103 approach each other, the insert post 104 on one arc arm 103 will be inserted into the locking hole on the adjacent arc arm 103, thereby connecting the arc arms 103 to each other and improving their overall strength. The rotation trajectory of the two adjacent arc arms 103 and the interlocking of the insert post 104 and the locking hole will give the insert post 104 and the locking hole a specific shape, which will have a certain locking effect on the downward bending deformation of the arc arms 103.

[0036] Furthermore, the sealing structure includes several conveying channels 202 arranged around the circumference of the impregnation tank 200, sealing plates 203 slidably arranged in each conveying channel 202, and a cylinder 204 for providing power for the movement of the sealing plates 203. When the sealing plates 203 approach and abut against each other, the sealing plates 203 seal the top opening of the impregnation tank 200.

[0037] The conveying channel 202 provides a channel for the movement of the sealing plate 203. To improve the sealing performance, rubber sealing structures can be added to the outer surface and ends of the sealing plate 203. When several sealing plates 203 approach each other, they can form a complete plane and seal the top opening of the impregnation tank 200. When several sealing plates 203 separate from each other, the impregnation tank 200 is connected to the vacuum tank 100, and the impregnation cage 400 can be transferred from the vacuum tank 100 to the impregnation tank 200.

[0038] like Figure 5 As shown, when there are two sealing plates 203, the contact surface of the two sealing plates 203 is flat. The length of the sealing plate 203 along its moving trajectory only needs to be greater than the radius of the impregnation tank 200, and the length of the conveying channel 202 along the moving trajectory of the sealing plate 203 will not be too large. If there are three or more sealing plates 203, the shape of the contact surface of the sealing plate 203 is conical. In order to ensure that the conical position of the sealing plate 203 is always within the conveying channel 202 and to avoid gaps between the sealing plate 203 and the conveying channel 202 in the width direction of the sealing plate 203, the shape of the conveying channel 202 also needs to be adjusted accordingly. At this time, the length of the conveying channel 202 will be larger. Therefore, setting the number of sealing plates 203 to two can save structural volume and operating space.

[0039] Furthermore, such as Figure 7 and Figure 8 As shown, a connecting shaft 401 is provided on the outer wall of the impregnation cage 400, and a rotating body that cooperates with the connecting shaft 401 is provided inside the impregnation tank 200.

[0040] When the impregnation cage 400 is moved into the impregnation tank 200, the connecting shaft 401 will combine with the rotating body. At this time, the rotating body can drive the impregnation cage 400 and the castings inside to rotate in the impregnation liquid through the connecting shaft 401. Using this movement, there is an opportunity for the castings to separate from each other. The impregnation liquid can flow between two adjacent castings, thereby allowing the impregnation liquid to enter the pores on each surface of the casting, avoiding mutual obstruction between the castings. At the same time, the movement of the castings can generate local small dynamic pressure in the impregnation liquid. This influx helps to form a flushing or pulsed pressurization effect at the pore inlet, facilitating the entry of the impregnation liquid into the pores. This method is more effective than simple static soaking.

[0041] It should be noted that, in order to improve the support effect on the impregnation cage 400, the number of connecting shafts 401 can be set to two, and they are arranged opposite to each other on both sides of the outer wall of the impregnation cage 400. The number and position of the rotating bodies need to correspond to the connecting shafts 401.

[0042] In some embodiments, the rotating body can not only rotate but also swing, which can reduce the collision intensity between castings, facilitate the protection of castings, and prevent the violent fluctuations of the impregnation liquid from entraining external air into the impregnation liquid.

[0043] Furthermore, such as Figures 7 to 8 As shown, the rotating body includes a fixed sleeve 205 installed on the outer wall of the impregnation tank 200, a movable sleeve 206 slidably located within the fixed sleeve 205, and a rotating column 207 located within the movable sleeve 206 and rotatably disposed relative to the fixed sleeve 205. A slot 208 is provided at the end of the rotating column 207. A locking block 402 is provided on the outer wall of the connecting shaft 401. The end face of the locking block 402 away from the connecting shaft 401 is used to cooperate with the circumferential outer wall of the rotating column 207.

[0044] When the impregnation cage 400 is moved into the impregnation tank 200, the opening of the slot 208 on the rotating column 207 faces upward and corresponds to the connecting shaft 401. The locking block 402 is located on the upper side of the outer wall of the connecting shaft 401. When the connecting shaft 401 moves into the slot 208, the top of the locking block 402 is on the same circle as the outer wall of the rotating column 207. At this time, the movable sleeve 206 is pushed to move and the opening of the slot 208 is blocked, thereby limiting the connecting shaft 401 on the rotating column 207, realizing the rapid connection between the rotating body and the impregnation cage 400. Then, by rotating the rotating column 207, the impregnation cage 400 and the casting inside can be driven to tumble in the impregnation liquid. The fixed sleeve 205 can provide support and guidance for the movable sleeve 206, and the fixed sleeve 205, the movable sleeve 206 and the rotating column 207 are sealed to each other to prevent the impregnation liquid from leaking. The movement of the movable sleeve 206 can be powered by a structure such as a driving cylinder, and the rotation of the rotating column 207 can be powered by a motor.

[0045] Furthermore, such as Figures 5 to 8 As shown, there are four connecting shafts 401, and the four connecting shafts 401 are distributed in a square around the impregnation cage 400 on the horizontal plane. There are four rotating bodies, and each rotating body is corresponding to the connecting shaft 401. Each rotating body has a through groove 209 on the end face of the rotating column 207. The through groove 209 and the slot 208 are perpendicular to each other, and the through grooves 209 on two adjacent rotating bodies are perpendicular to each other.

[0046] When the two connecting shafts 401 on the left and right sides of the impregnation cage 400 are used in conjunction with the two slots 208 on the corresponding two rotating bodies, the two connecting shafts 401 on the front and rear sides of the impregnation cage 400 are used in conjunction with the through slots 209 on the corresponding two rotating bodies. At this time, the two connecting shafts 401 on the front and rear sides of the impregnation cage 400 can pass through the through slots 209 and rotate through the rotating chair. That is, the two rotating bodies on the left and right sides can drive the impregnation cage 400 to rotate. The two rotating bodies on the front and rear sides are separated from the impregnation cage 400. When the two rotating bodies on the front and rear sides are used in conjunction with the corresponding two connecting shafts 401, the two rotating bodies on the left and right sides are separated from the impregnation cage 400. At this time, the two rotating bodies on the front and rear sides drive the impregnation cage 400 to move. This allows the impregnation cage 400 to move in different directions, avoiding the situation where the outer wall of the casting is always blocked when a single movement mode is used.

[0047] Furthermore, such as Figures 9 to 11 As shown, a support column 210 is slidably inserted on the piston disc 201. The support column 210 is used to support the impregnation cage 400. The support column 210 is connected to the piston disc 201 by a spring 212. The piston disc 201 is provided with a storage groove 211 that is used in conjunction with each rotating body. A lifting structure 213 is provided at the bottom of the piston disc 201 for moving the piston disc 201 and the support column 210. The lifting structure 213 includes a toothed column 214 and a toothed plate 215 that cooperate with each other. The toothed column 214 and the toothed plate 215 are respectively set in the impregnation tank 200 through the side support column 216 and the second cylinder 217. A lifting arm 218 is provided on the toothed column 214. The lifting arm 218 and the receiving groove 211 are rotatably connected through the second lifting arm 219.

[0048] The four receiving slots 211 on the piston disc 201 correspond to four rotating bodies respectively. When the piston disc 201 moves upward to a predetermined position, the rotating bodies are located in the receiving slots 211. At this time, the rotating bodies can restrict the movement of the piston disc 201 in the opposite direction. Simultaneously, the receiving slots 211 increase the upward height of the piston disc 201, thereby allowing more impregnating liquid to be pushed into the vacuum tank 100. Since the impregnation cage 400 is supported within the vacuum tank 100 by several arc arms 103, and... Furthermore, the upward movement of the piston disc 201 is limited. Therefore, it is necessary to support the bottom of the impregnation cage 400 by having the support column 210 pass through several arc arms 103. That is, when the piston disc 201 moves upward to the specified position, the support column 210 continues to move upward. At this time, the support column 210 slides relative to the piston disc 201. When the top of the support column 210 passes through several arc arms 103 and contacts the impregnation cage 400, the support column 210 supports the impregnation cage 400, and the several arc arms 103 separate and avoid each other.

[0049] The lifting structure 213 can provide the moving power for the piston disc 201 and the support column 210, specifically, such as Figure 11As shown, when cylinder 217 extends or retracts, it drives toothed plate 215 to move synchronously. Toothed plate 215 drives lifting arm 218 to rotate via toothed column 214. Lifting arm 218 pushes support column 210 up and down via lifting arm 219. Support column 210 pushes piston disc 201 to move via spring 212. When piston disc 201 moves to the specified position, piston disc 201 stops moving. At this time, support column 210 continues to move and compresses spring 212. To improve the stability of support column 210 movement, two sets of lifting structures 213 can be arranged opposite each other, and synchronous gears 220 can be set at the rotatable connection position between lifting arm 219 and support column 210. Synchronous gears 220 on the two lifting structures 213 mesh with each other, thereby making the support column 210 subjected to uniform force.

[0050] like Figure 11 As shown, lifting arm 1 218 and lifting arm 219 form a variable angle. Side support 216 provides support for toothed column 214. Initially, lifting arm 1 218 is located above lifting arm 219, and the angle between lifting arm 1 218 and lifting arm 219 is an acute angle. When the support column 210 moves upward, lifting arm 1 218 rotates and pushes the support column 210 to move through lifting arm 219. Lifting arm 1 218 gradually moves from the lower side of toothed column 214 to the upper side of toothed column 214. Thus, this structural method can reduce the area occupied by lifting structure 213 and provide a larger range of motion for support column 210.

[0051] Furthermore, such as Figure 4 and Figure 6 As shown, the air pump structure 300 includes a pump body 301 disposed on the vacuum tank 100 and a reversing valve 304 disposed on the impregnation tank 200. The input end of the pump body 301 is connected to the vacuum tank 100 through a first pipe 302. A secondary pipe 308 and a control valve 309 are disposed on the first pipe 302. The output end of the pump body 301 is provided with a second pipe 303. A pipe body 305 is provided at the input end of the reversing valve 304. The pipe body 303 and the pipe body 305 are connected by a sleeve 310. The sleeve 310 is pushed by a cylinder 311 and is connected to or separated from the pipe body 305. Pipe body 306 and pipe body 307 are respectively provided on the two output ends of the reversing valve 304. Pipe body 306 is connected to the upper space of piston disc 201, and pipe body 307 is connected to the lower space of piston disc 201.

[0052] When the impregnation tank 200 moves to the bottom of the vacuum tank 100, the cylinder 311 pushes the sleeve 310 on the tube 2 303 down and connects it with the tube 3 305. The control valve 309 is closed, and the directional valve 304 is adjusted to connect the tube 3 305 with the tube 5 307. The pump 301 is started, and the pump 301 draws the air out of the vacuum tank 100 through the tube 1 302, so that a vacuum negative pressure environment is formed inside the vacuum tank 100. The drawn air is introduced into the space under the piston disc 201 through the tube 2 303, the tube 3 305 and the tube 5 307. The air pressure in this space will provide auxiliary thrust for the upward movement of the piston disc 201.

[0053] Once the vacuum level inside the vacuum tank 100 reaches the required level, the lifting structure 213 pushes the piston disc 201 upward, allowing the impregnation liquid to enter the vacuum tank 100. This reduces the space occupied by air inside the vacuum tank 100, and the pump body 301 continuously pumps air to maintain a negative pressure inside the vacuum tank 100. When the impregnation liquid submerges the casting and the impregnation cage 400 moves downward synchronously with the piston disc 201, the pump body 301 reverses its direction, causing the air below the piston disc 201 to flow back into the vacuum tank 100, restoring the vacuum tank 100 to a normal pressure state. This facilitates the subsequent separation of the vacuum tank 100 from the impregnation tank 200.

[0054] When the impregnation cage 400 is moved into the impregnation tank 200 and the sealing structure closes the top opening of the impregnation tank 200, the control valve 309 opens, the reversing valve 304 controls the connection between the third pipe 305 and the fourth pipe 306, the pump 301 runs and uses the auxiliary pipe 308 to send external air into the space above the piston disc 201, thereby providing a high-pressure environment for the castings in the impregnation tank 200.

[0055] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined herein, and are to be considered as covering any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Thus, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. An impregnation apparatus for filling pores in die-cast parts, characterized in that, The device includes a tank body, an air pump structure located outside the tank body, and an impregnation cage located inside the tank body. The impregnation cage is used to hold the casting. The tank body consists of a vacuum tank and an impregnation tank arranged vertically. The vacuum tank and the impregnation tank are interconnected. The air pump structure evacuates the vacuum tank or pressurizes the impregnation tank. The impregnation tank stores impregnating liquid and is equipped with a piston disc that can move vertically inside the impregnation tank. The impregnation tank is provided with a sealing structure for isolating the impregnation tank.

2. The impregnation equipment for filling pores in die-cast parts according to claim 1, characterized in that, The impregnation tanks are provided in a plurality of ways, and the plurality of impregnation tanks are arranged in a linear or circular manner. The plurality of impregnation tanks are moved sequentially to the bottom of the vacuum tank and connected to each other for use.

3. The impregnation equipment for filling pores in die-cast parts according to claim 1, characterized in that, The vacuum tank is equipped with a support structure for fixing the impregnation cage. The support structure includes a plurality of transmission wheels rotatably disposed on the inner wall of the vacuum tank and a power ring that is connected to each of the transmission wheels. Each of the transmission wheels is provided with an arc arm.

4. The impregnation equipment for filling pores in die-cast parts according to claim 3, characterized in that, The radius of the arc arm is equal to the inner diameter of the vacuum tank. Each arc arm is provided with a post and a locking hole. The post on the arc arm is used in conjunction with the locking hole on the adjacent arc arm.

5. An impregnation device for filling pores in die-cast parts according to claim 1, characterized in that, The sealing structure includes several conveying channels arranged around the circumference of the impregnation tank, sealing plates slidably disposed in each of the conveying channels, and a cylinder for providing power for the movement of the sealing plates. When the sealing plates approach and abut against each other, the sealing plates seal the top opening of the impregnation tank.

6. The impregnation equipment for filling pores in die-cast parts according to claim 1, characterized in that, A connecting shaft is provided on the outer wall of the impregnation cage, and a rotating body that cooperates with the connecting shaft is provided inside the impregnation tank.

7. An impregnation apparatus for filling pores in die-cast parts according to claim 6, characterized in that, The rotating body includes a fixed sleeve installed on the outer wall of the impregnation tank, a movable sleeve slidably located within the fixed sleeve, and a rotating column located within the movable sleeve and rotatably disposed relative to the fixed sleeve. The end of the rotating column is provided with a slot. A locking block is provided on the outer wall of the connecting shaft, and the end face of the locking block away from the connecting shaft is used to cooperate with the circumferential outer wall of the rotating column.

8. An impregnation apparatus for filling pores in die-cast parts according to claim 7, characterized in that, The four connecting shafts are arranged in a square around the impregnation cage on the horizontal plane. Four rotating bodies are provided, and each rotating body is correspondingly arranged with the connecting shaft. A through groove is opened on the end face of the rotating column on each rotating body. The through groove is perpendicular to the slot, and the through grooves on two adjacent rotating bodies are perpendicular to each other.

9. An impregnation apparatus for filling pores in die-cast parts according to claim 6, characterized in that, A support column is slidably inserted on the piston disc. The support column is used to support the impregnation cage. The support column is connected to the piston disc by a spring. The piston disc is provided with a storage groove that cooperates with each of the rotating bodies. A lifting structure for moving the piston disc and the support column is provided at the bottom of the piston disc. The lifting structure includes a toothed column and a toothed plate that cooperate with each other. The toothed column and the toothed plate are respectively set in the impregnation tank through a side support column and a cylinder. A lifting arm is provided on the toothed column. The lifting arm is rotatably connected to the storage groove through a lifting arm.

10. An impregnation apparatus for filling pores in die-cast parts according to claim 1, characterized in that, The air pump structure includes a pump body mounted on the vacuum tank and a reversing valve mounted on the impregnation tank. The input end of the pump body is connected to the vacuum tank through a first pipe body. A secondary pipe and a control valve are mounted on the first pipe body. The output end of the pump body is mounted on a second pipe body. A pipe body three is provided at the input end of the reversing valve. The pipe body two and the pipe body three are connected by a sleeve, and the sleeve is pushed by a cylinder three and connected to or separated from the pipe body three. A pipe body four and a pipe body five are respectively provided on the two output ends of the reversing valve. The pipe body four is connected to the upper space of the piston disc, and the pipe body five is connected to the lower space of the piston disc.

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