A flexible taking-out device for lost foam

Abstract

The application provides a lost foam flexible mold taking device and relates to the technical field of lost foam extraction, comprising a rack, a hanging plate is bolted on the top of the rack, a lifting mechanism is arranged on the side of the rack, a moving mechanism is arranged on the rack, a mold taking mechanism is arranged on the moving mechanism, and a recovery mechanism is arranged on the left side of the rack; the recovery mechanism comprises a recovery pipeline, the recovery pipeline is arranged at the left end of the rack, a recovery window is arranged at the top end of the recovery pipeline, a filter screen is arranged in the recovery window, a heat exchange structure is arranged below the recovery pipeline, and an exhaust condensing structure is arranged below the heat exchange structure. The application solves the technical problem that the lost foam extraction device cannot recover high-temperature water vapor in the lost foam manufacturing process.

Description

Technical Field

[0001] This invention belongs to the field of lost foam extraction technology, specifically relating to a flexible lost foam extraction device. Background Technology

[0002] Removing the lost foam blank from the mold (i.e., taking out the lost foam blank from the forming mold) is one of the key steps in the lost foam casting process. It is necessary to balance the integrity of the blank (avoiding deformation and breakage) and the efficiency of mold removal. Therefore, flexible mold removal by pneumatic means can effectively ensure the integrity of the lost foam.

[0003] A search revealed that a utility model with patent publication number CN221089859U proposed an independent mobile mold removal truss device. In the aforementioned patent document, a cylinder is used to remove the injection molded part from the mold. However, the aforementioned utility model lacks a mechanism for recovering the high-temperature water vapor generated during the lost foam manufacturing process, and therefore cannot effectively recover and reuse the high-temperature water vapor. Summary of the Invention

[0004] The present invention provides a flexible mold removal device for lost foam casting, which solves at least one of the technical problems mentioned above.

[0005] To solve the above-mentioned technical problems, the present invention discloses a flexible mold removal device for lost foam casting, including a frame, a hanging plate bolted to the top of the frame, a lifting mechanism on the side of the frame, a moving mechanism on the frame, a mold removal mechanism on the moving mechanism, and a recycling mechanism on the left side of the frame.

[0006] The recycling mechanism includes a recycling pipe located at the left end of the frame. A recycling window is located at the top of the recycling pipe, and a filter screen is installed inside the recycling window. A heat exchange structure is located below the recycling pipe, and the heat exchange structure is connected to the exhaust condensation structure.

[0007] The heat exchange structure includes a heat exchange trough tube, which is connected to a recovery pipe. Both ends of the heat exchange trough tube are connected to water supply pipes. Two partitions are symmetrically fixed inside the heat exchange trough tube. Several heat exchange tubes are arranged between the two partitions. Both ends of the heat exchange tubes pass through and are fixedly connected to the two partitions. Exhaust vents are provided on both the upper and lower sides of the heat exchange trough tube.

[0008] Preferably, the lifting mechanism includes four columns, which are located at the four corners of the suspended platform. The suspended platform is slidably connected to the four columns. Two electric telescopic rods are provided on both sides of the frame. A horizontal plate is provided between the two electric telescopic rods. The horizontal plate is bolted to the working end of the electric telescopic rod. The horizontal plate is bolted to the suspended platform. An adjustment structure is provided between the two columns on the left and right sides.

[0009] Preferably, the adjustment structure includes a connecting crossbar, which is located between two columns. Both ends of the connecting crossbar are fitted and fixedly connected to the two columns. A threaded sleeve is threaded through and threaded to the center of the connecting crossbar. A stabilizing slide plate is rotatably connected to the bottom end of the threaded sleeve. Both ends of the stabilizing slide plate are fitted and slidably connected to the two columns. The threaded sleeve is rotatably connected to the electric telescopic rod. A rotating handle ring is fitted to the top end of the threaded sleeve.

[0010] Preferably, the moving mechanism includes two moving tracks, which are symmetrically bolted to both sides of the frame. A moving platform is provided between the moving tracks, and the two sides of the moving platform are slidably connected to the moving tracks. A mold-taking mechanism is provided on the moving platform. A ball screw is provided above each of the two moving tracks, and the ball screw is rotatably connected to the top surface of the frame. A moving clip is bolted to the nut of the ball screw, and the moving clip cooperates with the moving platform. A drive motor is provided at one end of the ball screw, and the output end of the drive motor is connected to the ball screw. The drive motor is bolted to the frame, and shock-absorbing structures are provided at both ends of the frame.

[0011] Preferably, the damping structure includes a unidirectional damper, which is bolted to the frame and fitted with a compression elastic element.

[0012] Preferably, the mold-taking mechanism includes a fixed frame, which is bolted to the bottom of the moving platform. The fixed frame has several connecting seats bolted on it, and a pressure pipe is fixedly connected to the bottom of each connecting seat. A buffer suction cup is fitted under the pressure pipe, and a connecting port is provided on one side of the pressure pipe, which is connected to the input end of the pressure pipe. A vacuum valve is bolted to the top of the fixed frame, and the output end of the pressure pipe is connected to the vacuum valve. A storage structure is provided above the hanging plate, and a main pressure pipe is connected to the input end of the vacuum valve on its side. The main pressure pipe is located inside the storage structure.

[0013] Preferably, the storage structure includes a wheel seat and a vacuum pump. The wheel seat is bolted to the top of the hanging plate. A recovery sleeve is fixedly connected to the center of the wheel seat. A recovery reel is rotatably connected to the recovery sleeve. An adapter is rotatably connected to one end of the recovery sleeve. A main pressure pipe is sleeved on the adapter. The main pressure pipe passes through and is wound around the recovery reel. The other end of the recovery sleeve is connected to the output end of the vacuum pump. An automatic recovery structure is provided on the side of the recovery reel near the vacuum pump.

[0014] Preferably, the automatic recycling structure includes a cover shell, which is fitted onto the recycling sleeve. The end face of the cover shell is bolted to the receiving reel. A retaining ring is provided inside the cover shell, which is fitted onto and fixedly connected to the recycling sleeve. An elastic coil spring is provided between the retaining ring and the cover shell, with both ends of the elastic coil spring fixedly connected to the retaining ring and the cover shell, respectively.

[0015] Preferably, the exhaust condensation structure includes a sealed housing, which is located below the heat exchange tank tube and is bolted to the heat exchange tank tube. A U-shaped channel is provided inside the sealed housing. One end of the U-shaped channel is connected to the exhaust port on the lower side of the heat exchange tank tube. A water accumulation chamber is provided at the bottom of the U-shaped channel. Several spray heads are provided at the other end of the U-shaped channel. A water supply branch pipe is fixedly connected to the input end of each spray head. The water supply branch pipe passes through and is fixedly connected to the sealed housing. An exhaust pipe passes through and is fixedly connected to the side of the sealed housing. A spiral blade is fixedly connected inside the exhaust pipe. A negative pressure fan is connected to the output end of the exhaust pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The mold removal mechanism of this invention uses negative pressure adsorption to avoid mechanical contact damage to the lost foam casting process; it solves the problem that traditional clamping and mold removal methods easily lead to product deformation and breakage. This improves the yield rate in the lost foam casting production process.

[0018] 2. This invention utilizes a recycling mechanism to collect high-temperature water vapor, which can not only prevent steam from spreading in the workshop and reduce the impact on the workers' operating environment and equipment, but also recover energy and resources from the high-temperature water vapor, thereby reducing the production cost of lost foam casting.

[0019] 3. This invention uses a retractable roller driven by an elastic coil spring to achieve the follow-up storage of the main pressure tube, avoiding air leakage (interruption of negative pressure transmission) or wear caused by dragging or bending of the main pressure tube, thereby extending the service life of the main pressure tube. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a side view of the present invention;

[0023] Figure 3 This is a schematic diagram of the top surface structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged view of a portion at point A;

[0025] Figure 5 This is a schematic diagram of the top structure of the mold-taking mechanism of the present invention;

[0026] Figure 6 This is a schematic diagram of the bottom structure of the mold-taking mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the storage structure of the present invention;

[0028] Figure 8 This is a cross-sectional structural diagram of the storage structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the recycling mechanism of the present invention;

[0030] Figure 10 This is a cross-sectional structural diagram of the recycling mechanism of the present invention;

[0031] Figure 11 This is a longitudinal cross-sectional structural diagram of the recycling mechanism of the present invention.

[0032] In the diagram: 1. Frame; 11. Hanging plate; 2. Lifting mechanism; 21. Column; 22. Electric telescopic rod; 23. Horizontal plate; 3. Adjustment structure; 31. Connecting crossbar; 32. Threaded sleeve; 33. Stabilizing slide plate; 34. Rotating grip ring; 4. Moving mechanism; 41. Moving track; 42. Moving platform; 43. Ball screw; 44. Moving clip; 45. Drive motor; 5. Shock absorption structure; 51. One-way damper; 52. Compression elastic element; 6. Demolding mechanism; 61. Fixed frame; 62. Connecting seat; 63. Pressure pipe; 64. Buffer suction cup; 65. Connection port; 66. Pressure pipeline; 67. Vacuum valve; 68. Main pressure pipe; 7. Storage structure 71. Wheel seat; 72. Recycling sleeve; 73. Recycling reel; 74. Adapter; 75. Vacuum pump; 8. Automatic recycling structure; 81. Encasing shell; 82. Snap ring; 83. Elastic coil spring; 9. Recycling mechanism; 91. Recycling pipe; 92. Recycling window; 93. Filter screen; 94. Heat exchange structure; 941. Heat exchange trough tube; 942. Water supply pipe; 943. Partition plate; 944. Heat exchange tube; 945. Exhaust vent; 10. Exhaust condensation structure; 101. Sealing shell; 102. U-shaped channel; 103. Water collection chamber; 104. Spray head; 105. Water supply branch pipe; 106. Exhaust duct; 107. Spiral blade; 108. Negative pressure fan. Detailed Implementation

[0033] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0034] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0035] The present invention provides the following embodiments:

[0036] Example 1

[0037] This invention provides a flexible lost foam casting device, such as... Figure 1 , Figure 9 , Figure 10 , Figure 11 As shown, a lost foam flexible mold removal device includes a frame 1, a hanging plate 11 bolted to the top of the frame 1, a lifting mechanism 2 on the side of the frame 1, a moving mechanism 4 on the frame 1, a mold removal mechanism 6 on the moving mechanism 4, and a recycling mechanism 9 on the left side of the frame 1.

[0038] During the demolding of lost foam casting, the mold rises, bringing the lost foam into contact with the mold removal mechanism 6. The mold removal mechanism 6 uses negative pressure to adhere the lost foam to itself. The mold then descends, and the lost foam is moved above the conveying device via the moving mechanism 4. The lifting mechanism 2 lowers the frame 1 until the lost foam reaches a predetermined position. At this point, the mold removal mechanism 6 releases the negative pressure, allowing the lost foam to fall. Then, the lifting mechanism 2 raises the frame 1 again. A large amount of water vapor is generated during demolding, and the recovery mechanism 9 recovers this water vapor.

[0039] The recycling mechanism 9 includes a recycling pipe 91, which is located at the left end of the frame 1. A recycling window 92 is provided at the top of the recycling pipe 91, and a filter screen 93 is provided inside the recycling window 92. A heat exchange structure 94 is provided below the recycling pipe 91, and the heat exchange structure 94 is connected to the exhaust condensation structure 10.

[0040] When a large amount of high-temperature water vapor is generated during the demolding process of lost foam casting, the exhaust condensation structure 10 of the recovery mechanism 9 is activated, which creates a negative pressure in the recovery pipe 91 to collect most of the high-temperature water vapor. After the collected high-temperature water vapor passes through the filter screen 93 to intercept large particulate impurities, it enters the heat exchange structure 94 for heat exchange, preheating the water used for lost foam casting to achieve initial cooling and condensation. Subsequently, the water vapor after initial cooling enters the exhaust condensation structure 10 for secondary condensation, recovering water molecules in the water vapor. Finally, the gas after secondary condensation is discharged from the exhaust condensation structure 10.

[0041] The heat exchange structure 94 includes a heat exchange trough tube 941, which is connected to a recovery pipe 91. Both ends of the heat exchange trough tube 941 are connected to water supply pipes 942. Two partitions 943 are symmetrically fixed inside the heat exchange trough tube 941. Several heat exchange tubes 944 are provided between the two partitions 943. Both ends of the several heat exchange tubes 944 pass through and are fixedly connected to the two partitions 943. Exhaust vents 945 are provided on both the upper and lower sides of the heat exchange trough tube 941.

[0042] Under negative pressure, water vapor enters the heat exchange tank tube 941 from the recovery pipe 91, and passes through several heat exchange tubes 944 between two partitions 943 (cooling water flows inside the tubes). The exhaust vents 945 at the top and bottom of the heat exchange tank tube 941 provide inlet and outlet channels for the heat medium (inlet from the top, outlet from the bottom). The water supply pipe 942 introduces cold water into the side of the heat exchange tank tube 941. The cold water enters the heat exchange tubes 944, and heat is transferred between the cold water and the heat medium in the heat exchange tank tube 941 through the tube wall. After the water vapor releases heat, it cools down and condenses some of the condensate. The cold water absorbs heat and heats up (which can be recovered as waste heat to the production water system). The condensed condensate enters the lower exhaust condensation structure 10 from the exhaust vent 945.

[0043] In the above technical solution, the mold-removing mechanism 6 adopts negative pressure adsorption, avoiding mechanical contact damage to the lost foam and solving the problem of product deformation and breakage easily caused by traditional clamping and mold removal; it can improve the yield rate in the lost foam production process. The lifting mechanism 2, together with the moving mechanism 4, can stably transfer the lost foam. Through automation technology, the damage to the lost foam during the transfer process is reduced. Moreover, the lifting mechanism 2 can be adjusted to adapt to lost foam of different sizes, improving the versatility of the equipment. The recovery mechanism 9 collects high-temperature water vapor, which can not only prevent steam from spreading in the workshop and reduce the impact on the workers' operating environment and equipment, but also recover energy and resources from the high-temperature water vapor, reducing the production cost of lost foam.

[0044] Example 2

[0045] Based on Example 1, such as Figure 2As shown, the lifting mechanism 2 includes four columns 21, which are located at the four corners of the hanging plate 11. The hanging plate 11 is slidably connected to the four columns 21. Two electric telescopic rods 22 are provided on both sides of the frame 1. A horizontal plate 23 is provided between the two electric telescopic rods 22. The horizontal plate 23 is bolted to the working end of the electric telescopic rod 22. The horizontal plate 23 is bolted to the hanging plate 11. An adjustment structure 3 is provided between the two columns 21 on both the left and right sides.

[0046] During the lost foam casting and moving stages, the electric telescopic rod 22 of the lifting mechanism 2 remains extended. When the electric telescopic rod 22 extends or retracts, its working end pushes the horizontal plate 23 to move upward or downward. Since the horizontal plate 23 is fixed to the hanging plate 11 by bolts, the horizontal plate 23 drives the hanging plate 11 to move upward or downward synchronously. The four corners of the hanging plate 11 are slidably connected to the four columns 21. Therefore, when the hanging plate 11 rises / falls, it slides along the axial direction of the columns 21. The columns 21 provide guidance for the hanging plate 11 to prevent deviation.

[0047] The adjustment structure 3 includes a connecting crossbar 31, which is located between two columns 21. Both ends of the connecting crossbar 31 are sleeved and fixedly connected to the two columns 21. A threaded sleeve 32 is threaded through the center of the connecting crossbar 31 and threadedly connected to it. A stabilizing slide plate 33 is rotatably connected to the bottom end of the threaded sleeve 32. Both ends of the stabilizing slide plate 33 are sleeved and slidably connected to the two columns 21. The threaded sleeve 32 is rotatably connected to the electric telescopic rod 22. A rotating handle ring 34 is sleeved on the top end of the threaded sleeve 32.

[0048] The adjustment structures 3 on both sides work independently. When the lifting height range of the electric telescopic rod 22 needs to be adjusted, the adjustment structures 3 on both sides are driven synchronously. Taking one side as an example: the connecting crossbar 31 is fixed between the two uprights 21, serving as both the fixed base and the lifting base of the adjustment structure 3; the threaded sleeve 32 is threadedly connected to the connecting crossbar 31, and its bottom end is slidably connected to the upright 21 through the stabilizing slide plate 33 (the stabilizing slide plate 33 ensures the stability of the threaded sleeve 32 during movement). If the lifting height range of the electric telescopic rod 22 needs to be adjusted: rotate the rotating handle ring 34 to drive the threaded sleeve 32 to rotate; since the threaded sleeve 32 is threadedly engaged with the connecting crossbar 31, and the stabilizing slide plate 33 slides along the upright 21, the threaded sleeve 32 will drive the stabilizing slide plate 33 to move up and down along the upright 21, thereby changing the lifting height range of the electric telescopic rod 22.

[0049] In the above technical solution, the four corners of the hanging plate 11 are slidably connected to the four columns 21. With the synchronous drive of the electric telescopic rod 22, the hanging plate 11 moves along the axial direction of the column 21 when it is raised and lowered, avoiding tilting or deviation, and ensuring the stability of the lost foam when it is removed from the mold. The threaded sleeve 32 and the connecting crossbar 31 in the adjustment structure 3 work together to achieve an adjustable lifting height range: to meet the mold removal requirements of different sizes of lost foam. Moreover, the threaded connection (threaded sleeve 32 and connecting crossbar 31) has self-locking properties, and the position of the stable sliding plate 33 is not easy to loosen after adjustment, ensuring the reliability of the support.

[0050] Example 3

[0051] Based on Example 1, such as Figure 3 , Figure 4 As shown, the moving mechanism 4 includes two moving tracks 41, which are symmetrically bolted to both sides of the frame 1. A moving platform 42 is provided between the moving tracks 41, and the two sides of the moving platform 42 are slidably connected to the moving tracks 41. A mold-taking mechanism 6 is provided on the moving platform 42. A ball screw 43 is provided above each of the two moving tracks 41. The ball screw 43 is rotatably connected to the top surface of the frame 1. A moving clip 44 is bolted to the nut of the ball screw 43. The moving clip 44 cooperates with the moving platform 42. A drive motor 45 is provided at one end of the ball screw 43. The output end of the drive motor 45 is connected to the ball screw 43. The drive motor 45 is bolted to the frame 1. A shock-absorbing structure 5 is provided at both ends of the frame 1.

[0052] The lost foam casting is removed from the mold by the mold-removing mechanism 6 and, under the suction of the mold-removing mechanism 6, moved by the moving mechanism 4 from above the mold at one end of the frame 1 to above the conveying device at the other end. The drive motor 45 provides power for the movement, and its output end is directly connected to the lead screw of the ball screw 43, driving the lead screw of the ball screw 43 to rotate around its own axis. Since the nut of the ball screw 43 is threadedly engaged with its lead screw, when the lead screw of the ball screw 43 rotates, its nut moves linearly along the lead screw axis (parallel to the direction of the moving track 41). The nut of the ball screw 43 cooperates with the moving platform 42 through the moving clip 44 (the moving clip 44 and the moving platform 42 are snap-fitted together), so the linear movement of the nut directly drives the moving platform 42 to move synchronously. The mobile platform 42 is slidably connected to the mobile track 41 on both sides. The mobile track 41 restricts the mobile platform 42 to move only along the direction of the mobile track 41 (lateral) to avoid deviation or shaking. At the same time, two symmetrical ball screws 43 (one on each side of the frame 1) are driven synchronously to ensure that the mobile platform 42 is subjected to balanced force and moves more smoothly.

[0053] The damping structure 5 includes a one-way damper 51, which is bolted to the frame 1, and a compression elastic element 52 is sleeved on the one-way damper 51.

[0054] The shock-absorbing structures 5 (one-way dampers 51 + compression elastic elements 52) at both ends of the frame 1 are used to buffer the impact when the moving platform 42 reaches the end of its stroke. When the moving platform 42 approaches the end of the frame 1 due to inertia or driving error, it will first contact the shock-absorbing structures 5. The compression elastic elements 52 will be compressed first, absorbing part of the impact energy through elastic deformation. The one-way dampers 51 do not generate damping force in the compression direction, so the one-way dampers 51 are compressed. When the moving platform 42 disengages from the one-way dampers 51, the one-way dampers 51 generate damping effect, which is used to buffer the reset of the compression elastic elements 52 and avoid the compression elastic elements 52 from causing the frame 1 to vibrate back.

[0055] In the above technical solution, the ball screws 43 on both sides rotate at the same speed, and the moving platform 42 is subjected to balanced force, which can ensure the stability of the moving platform 42 during movement and avoid adsorption failure caused by shaking. The impact energy is absorbed by the compression elastic element 52, and the one-way damper 51 suppresses the reset and counter-vibration of the compression elastic element 52. The double protection reduces the vibration caused by inertial impact and ensures the stability during the movement of the lost foam.

[0056] Example 4

[0057] Based on Example 3, such as Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the mold-taking mechanism 6 includes a fixed frame 61, which is bolted to the bottom of the moving platform 42. Several connecting seats 62 are bolted on the fixed frame 61, and pressure pipes 63 are fixedly connected to the bottom of each connecting seat 62. A buffer suction cup 64 is sleeved under the pressure pipe 63. A connecting port 65 is provided on one side of the pressure pipe 63, which is connected to the input end of the pressure pipeline 66. A vacuum valve 67 is bolted to the top of the fixed frame 61, and the output end of the pressure pipeline 66 is connected to the vacuum valve 67. A storage structure 7 is provided above the hanging plate 11. A main pressure pipe 68 is connected to the input end of the side of the vacuum valve 67, and the main pressure pipe 68 is located inside the storage structure 7.

[0058] When mold removal is required, vacuum valve 67 opens, generating negative suction pressure in main pressure pipe 68. This negative pressure enters pressure pipe 63 through pressure pipe 66, drawing air out of the buffer suction cup 64 and creating negative pressure. The suction cup tightly adheres to the surface of the lost foam, using atmospheric pressure to firmly adhere the lost foam (the suction force can be adjusted via vacuum valve 67). The buffer suction cup 64 is elastic and can deform slightly during adhesion, adapting to minor unevenness on the lost foam surface (ensuring a seal) and buffering impact upon contact (preventing damage from hard collisions). When moving mechanism 4 moves the lost foam to the designated position and lifting mechanism 2 descends to the predetermined height to release the lost foam, vacuum valve 67 closes. A small amount of outside air enters pressure pipe 63 and buffer suction cup 64 through pressure pipe 66, eliminating the negative pressure and allowing the lost foam to naturally detach from buffer suction cup 64.

[0059] The storage structure 7 includes a wheel seat 71 and a vacuum pump 75. The wheel seat 71 is bolted to the top of the hanging plate 11. A recovery sleeve 72 is fixedly connected to the center of the wheel seat 71. A recovery reel 73 is rotatably connected to the recovery sleeve 72. An adapter 74 is rotatably connected to one end of the recovery sleeve 72. A main pressure pipe 68 is sleeved on the adapter 74. The main pressure pipe 68 passes through and is wound around the recovery reel 73. The other end of the recovery sleeve 72 is connected to the output end of the vacuum pump 75. An automatic recovery structure 8 is provided on the side of the recovery reel 73 near the vacuum pump 75.

[0060] The main pressure tube 68 is wound around the receiving reel 73. When the moving platform 42 moves the mold-taking mechanism 6 away from the vacuum pump 75, the main pressure tube 68 is stretched, causing the receiving reel 73 to rotate around the recovery sleeve 72. When the receiving reel 73 rotates, the automatic recovery structure 8 stores elastic potential energy. When the moving platform 42 approaches the vacuum pump 75, the tension of the main pressure tube 68 disappears, the automatic recovery structure 8 releases elastic potential energy, and causes the receiving reel 73 to rotate in the opposite direction, rewinding the main pressure tube 68 onto the receiving reel 73, thus achieving automatic retraction of the main pressure tube 68. The recovery sleeve 72 is fixed on the wheel seat 71. When the adapter 74 and the main pressure tube 68 rotate, the main pressure tube 68 is kept connected to the vacuum pump 75 through a seal (the interior of the adapter 74 is a hollow passage), ensuring stable transmission of vacuum negative pressure.

[0061] The automatic recycling structure 8 includes a cover shell 81, which is sleeved on the recycling sleeve 72. The end face of the cover shell 81 is bolted to the receiving reel 73. A retaining ring 82 is provided inside the cover shell 81. The retaining ring 82 is sleeved on and fixedly connected to the recycling sleeve 72. An elastic coil spring 83 is provided between the retaining ring 82 and the cover shell 81. The two ends of the elastic coil spring 83 are fixedly connected to the retaining ring 82 and the cover shell 81, respectively.

[0062] When the moving platform 42 moves the mold-taking mechanism 6 away from the vacuum pump 75, the rotating housing 73 drives the outer shell 81 to rotate. When the outer shell 81 rotates, the retaining ring 82 and the outer shell 81 rotate relative to each other. The elastic coil spring 83 between the retaining ring 82 and the outer shell 81 is tightened, generating elastic potential energy. When the moving platform 42 approaches the vacuum pump 75, the elastic potential energy of the elastic coil spring 83 is released, pulling the outer shell 81 and the housing 73 to rotate in the opposite direction.

[0063] The elastic deformation of the buffer suction cup 64 and the "surface force" characteristics of negative pressure adsorption in the above technical solution solve the problems of thin-wall deformation and sharp corner breakage that are easily caused by traditional rigid mold taking (such as mechanical claw gripping). The adsorption force can be precisely adjusted by the vacuum valve 67 to adapt to lost foam of different weights and materials. The storage roller 73 driven by the elastic coil spring 83 realizes the follow-up storage of the main pressure tube 68, avoiding air leakage (interruption of negative pressure transmission) or wear of the main pressure tube 68 due to dragging and bending, thereby extending the service life of the main pressure tube 68. The sealing design of the recovery sleeve 72 and the adapter 74 (keeping the passage sealed during rotation) ensures stable negative pressure transmission and no fluctuation in adsorption force.

[0064] Example 5

[0065] Based on Example 1, such as Figure 9 , Figure 10 , Figure 11 As shown, the exhaust condensation structure 10 includes a sealing housing 101, which is located below the heat exchange tank tube 941. The sealing housing 101 is bolted to the heat exchange tank tube 941. A U-shaped channel 102 is provided inside the sealing housing 101. One end of the U-shaped channel 102 is connected to the exhaust port 945 on the lower side of the heat exchange tank tube 941. A water accumulation chamber 103 is provided at the bottom of the U-shaped channel 102. Several spray heads 104 are provided at the other end of the U-shaped channel 102. A water supply branch pipe 105 is fixedly connected to the input end of each spray head 104. The water supply branch pipe 105 passes through and is fixedly connected to the sealing housing 101. An exhaust pipe 106 passes through and is fixedly connected to the side of the sealing housing 101. A spiral blade 107 is fixedly connected inside the exhaust pipe 106. A negative pressure fan 108 is connected to the output end of the exhaust pipe 106.

[0066] The negative pressure fan 108 draws air through the exhaust pipe 106, creating a negative pressure in the recovery mechanism 9. This causes water vapor to enter from the recovery pipe 91, pass through the heat exchange structure 94, and enter the exhaust condensation structure 10. After the water vapor undergoes preliminary cooling and condensation in the heat exchange structure 94, it enters the U-shaped channel 102 of the sealed housing 101 from the exhaust port 945 below the heat exchange tank pipe 941 and flows along the U-shaped channel 102 toward the spray head 104. The water supply branch pipe 105 delivers cold water to the spray head 104, which sprays out to form a water curtain. The water curtain comes into direct contact with the water vapor in the U-shaped channel 102. The water vapor releases heat upon cooling and liquefies into liquid water, which flows along the inner wall of the U-shaped channel 102 into the bottom water collection chamber 103 (to collect condensate). The condensate in the water collection chamber 103 is discharged through the drain port at the bottom of the sealing housing 101. Finally, the water vapor, after sufficient heat exchange and condensation, is discharged through the exhaust pipe 106. The spiral blades 107 in the exhaust pipe 106 cause the airflow to rotate, which not only blocks the water in the sealing housing 101 but also uses centrifugal force to separate the residual water vapor carried in the airflow. Finally, the clean gas is discharged from the negative pressure fan outlet.

[0067] In the above technical solution, the heat exchange structure 94 is used to exchange heat with water vapor, which can recover part of the heat in the water vapor to preheat the water used in lost foam manufacturing, thereby reducing production energy consumption. In addition, the exhaust condensation structure 10 performs secondary condensation on the water vapor, which can effectively collect water molecules in the water vapor, improve the water recycling rate, reduce the water consumption in the lost foam manufacturing process, and through the secondary structure, the water vapor can be fully recovered and utilized, thereby improving the efficiency of lost foam production.

[0068] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A flexible pattern taking device for lost foam, characterized in that: The machine frame is provided with a lifting plate at the top, a lifting mechanism at the side, a moving mechanism, a mold taking mechanism, a recycling mechanism at the left side, and a storage structure at the top of the lifting plate. The recycling mechanism comprises a recycling pipeline, a recycling window, a filter screen, a heat exchange structure, and an air exhaust condensing structure. The heat exchange structure comprises a heat exchange groove pipe, a water supply pipeline, two symmetrical baffles, a plurality of heat exchange pipes, and an air outlet. The moving mechanism comprises two moving rails, a moving platform, a ball screw, a moving clamp, a driving motor, and a damping structure. The damping structure comprises a one-way damper and a compression elastic member. The mold taking mechanism comprises a fixed frame, a plurality of connecting seats, a pressure pipe, a buffer suction disc, a communication port, a vacuum valve, a main pressure pipe, a wheel seat, a recovery sleeve, a storage reel, an adapter, a main pressure pipe, and an automatic recovery structure. The automatic recovery structure comprises a clamping ring, a spring, and a cladding shell. ​ The exhaust air condensing structure comprises a sealed shell seat arranged below the heat exchange groove pipe, the sealed shell seat is bolted with the heat exchange groove pipe, a U-shaped channel is arranged in the sealed shell seat, one end of the U-shaped channel is communicated with the exhaust air outlet at the lower side of the heat exchange groove pipe, a water accumulation cavity is arranged at the bottom end of the U-shaped channel, a plurality of spray heads are arranged at the other end of the U-shaped channel, water supply branch pipes are fixedly connected to the input ends of the plurality of spray heads, the water supply branch pipes penetrate through and are fixedly connected to the sealed shell seat, an exhaust pipe is fixedly connected to the side of the sealed shell seat, helical blades are fixedly connected in the exhaust pipe, and a negative pressure fan is connected to the output end of the exhaust pipe.

2. The flexible pattern taking device for lost foam according to claim 1, characterized in that: The lifting mechanism comprises four columns, the four columns are arranged at four corners of a hanging plate, the hanging plate is slidingly connected with the four columns, two electric telescopic rods are arranged on both sides of a rack, a horizontal plate is arranged between the two electric telescopic rods, the horizontal plate is bolted at working ends of the electric telescopic rods, the horizontal plate is bolted between the hanging plate, and adjusting structures are arranged between the two columns on the left and right sides.

3. A flexible pattern taking device for lost foam molding according to claim 2, characterized in that The adjusting structure comprises a connecting crosspiece, the connecting crosspiece is arranged between the two columns, the connecting crosspiece is sleeved and fixedly connected to the two columns at both ends, a threaded sleeve pipe is threadedly connected to the center of the connecting crosspiece, a stable sliding plate is rotatably connected to the bottom end of the threaded sleeve pipe, the stable sliding plate is sleeved and slidingly connected to the two columns at both ends, the threaded sleeve pipe is rotatably connected with the electric telescopic rod, and a rotating handle ring is sleeved at the top end of the threaded sleeve pipe.

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