Reducing pipe evanescent mode casting mold and casting method thereof

Abstract

The invention relates to the technical field of reducing pipe evanescent mode casting molds, and discloses a reducing pipe evanescent mode casting mold and a casting method thereof.The reducing pipe evanescent mode casting mold comprises a circular shell, an upper fixing ring is arranged above the circular shell, reinforcing ribs are arranged between the upper fixing ring and the circular shell, and four positioning blocks are arranged above the circular shell; every two of the four positioning blocks are symmetrical to each other; a circular pressing plate is further arranged on one side of the circular shell. According to the device, the driving assembly drives the fixing plate to rotate and can vertically move upwards at the same time, so that placed gravel can be leveled, meanwhile, the driving assembly can drive the circular pressing plate to move when moving, and therefore the circular pressing plate can move to the position above the circular shell; and meanwhile, when casting is completed, the driving assembly continues to operate at the moment to drive the fixing plate to rotate, and when the fixing plate vertically moves upwards, the positioning plate can be driven to move, and therefore the workpiece is taken out.

Description

Technical Field

[0001] This invention belongs to the field of shrink-tube lost foam casting mold technology, specifically, it relates to a shrink-tube lost foam casting mold and its casting method. Background Technology

[0002] In modern industry, reducer pipes are widely used as important fluid transport fittings in many sectors such as petrochemicals, power energy, and water supply and drainage systems. As industrial production demands increasingly higher product performance, more stringent standards are being set for the dimensional accuracy, surface quality, and production efficiency of reducer pipes.

[0003] However, existing lost foam casting molds for tapered tubes often require the injection of sand and gravel. When injecting the sand and gravel from a single point, it tends to accumulate in a cone shape, requiring manual leveling later, which is quite troublesome.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A tapered tube lost foam casting mold includes a circular shell. An upper fixing ring is positioned above the circular shell, and reinforcing ribs are provided between the upper fixing ring and the circular shell. Four positioning blocks are positioned above the circular shell, symmetrically arranged in pairs. A circular pressing plate is also provided on one side of the circular shell. A hydraulic cylinder is positioned above the circular pressing plate, and an mounting block is positioned above the hydraulic cylinder. The circular pressing plate is used to press sand and gravel placed inside the circular shell. A driving assembly is positioned above the circular shell, and a fixing plate is located inside the circular shell. The driving assembly is used to drive the fixing plate to rotate and move vertically, and the fixing plate is used to level the sand and gravel placed inside the circular shell.

[0006] In a preferred embodiment of the present invention, a placement platform is provided on both sides of the circular shell, the two placement platforms are symmetrical to each other, two symmetrical guardrails are provided above each of the two placement platforms, and a circular pressing plate is placed on the placement platform. The inner cavity of the circular shell is also provided with four rectangular slots distributed in a circle, the four rectangular slots are symmetrical to each other in pairs, and a positioning plate is also placed in the inner cavity of the circular shell. The side wall of the positioning plate is provided with four connecting blocks, and the connecting blocks and the rectangular slots are aligned with each other.

[0007] In a preferred embodiment of the present invention, a mounting base is provided at the bottom of the circular shell, four support rods are provided above the mounting base, the four support rods are symmetrical to each other in pairs, and a top plate is provided above the four support rods.

[0008] In a preferred embodiment of the present invention, the drive assembly includes a servo motor, which is disposed above the top plate. The output end of the servo motor is provided with a threaded rod, which movably passes through the top plate. A threaded sleeve is engaged on the threaded rod, and two mutually symmetrical first multi-stage telescopic rods are provided on the threaded sleeve. The ends of the two first multi-stage telescopic rods away from the threaded sleeve are disposed on the top plate.

[0009] In a preferred embodiment of the present invention, a circular groove is provided at the bottom of the threaded sleeve, a movable slider is slidably disposed on the circular groove, a connecting rod is provided at the end of the movable slider away from the circular groove, and a fixing plate is connected to the end of the connecting rod away from the movable slider.

[0010] In a preferred embodiment of the present invention, a circular sleeve is sleeved on the connecting rod, a connecting rod is provided on one side of the circular sleeve, and the end of the connecting rod away from the circular sleeve is provided on the threaded rod.

[0011] In a preferred embodiment of the present invention, a circular mounting plate is provided at the bottom of the fixing plate, and a slide rail is provided above the circular mounting plate. The slide rail and the fixing plate are slidably disposed. Four fixing blocks are provided on the side wall of the circular mounting plate in a circular arrangement. The four fixing blocks respectively fit into the rectangular slots. A second multi-stage telescopic rod is provided above two fixing blocks. The two second multi-stage telescopic rods are symmetrical to each other, and the ends of the two second multi-stage telescopic rods away from the fixing blocks are disposed on the top plate.

[0012] In a preferred embodiment of the present invention, a rectangular tube is provided at the bottom of each of the two fixed blocks, a placement plate is provided in the inner cavity of each of the two rectangular tubes, a rectangular insertion rod is provided at the bottom of each of the two placement plates, the two rectangular insertion rods are symmetrical to each other, the two rectangular insertion rods are respectively movably inserted through the rectangular tubes, and one end of each of the two rectangular insertion rods away from the placement plate is provided on the positioning plate.

[0013] In a preferred embodiment of the present invention, a swing arm is movably provided at the bottom of the threaded sleeve, and the other end of the swing arm is provided on the mounting block.

[0014] A method for lost foam casting of tapered tubes, comprising the following steps: Step 1: The workers place the shrinking tube disappearing mold into the circular shell and simultaneously inject sand into the circular shell; Step 2: When the sand and gravel are placed in it, the staff can use the drive component to make the fixed plate rotate and move vertically upward at the same time, so as to level the sand and gravel. At the same time, when the drive component moves vertically upward, it can also drive the installation block to move, thereby driving the circular pressing plate to move. Step 3: When the fixing plate leaves the inner cavity of the circular shell, the circular pressing plate has moved to the middle of the circular shell. At this time, the operator can control the hydraulic cylinder to drive the circular pressing plate to compact the sand and gravel inside the circular shell. Step 4: At this point, the workers can gradually proceed with the lost foam casting process for the shrink tube. Step 5: When the casting is completed, the staff will control the drive component to run again, which will drive the fixed plate to rotate and move vertically upward. At the same time, it will pull up the positioning plate, thereby bringing out the cast workpiece. At this time, the circular pressing plate can be moved to the placement platform set on the other side.

[0015] Compared with the prior art, the present invention has the following advantages: This invention utilizes a drive assembly to rotate a fixed plate while simultaneously moving it vertically upwards. This allows for the leveling of the placed sand and gravel. The movement of the drive assembly also moves a circular pressing plate above the circular housing, facilitating subsequent pressing of the sand and gravel within it. Furthermore, once the casting is complete, the drive assembly continues to rotate and move the fixed plate vertically upwards, moving a positioning plate to remove the workpiece. By leveling the sand and gravel during pouring, the conical shape of the sand and gravel during pouring is reduced, minimizing the need for manual grinding.

[0016] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram: Figure 1 A three-dimensional structural diagram of a tapered tube lost foam casting mold; Figure 2 This is a side view of a tapered tube lost foam casting mold. Figure 3 A bottom view of a tapered tube lost foam casting mold; Figure 4 A schematic diagram of the mounting base structure for a tapered tube lost foam casting mold; Figure 5 A bottom view of the mounting base structure of a tapered tube lost foam casting mold; Figure 6 For a type of shrink-tube lost foam casting mold Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 A schematic diagram of the circular shell structure of a tapered tube lost foam casting mold; Figure 8 A schematic cross-sectional view of the circular shell structure of a tapered tube lost foam casting mold; Figure 9 A schematic diagram of the enlarged circular shell structure of a tapered tube lost foam casting mold; Figure 10 A schematic diagram of a partial circular shell structure of a tapered tube lost foam casting mold; Figure 11 This is a schematic diagram of a rectangular tube structure for a tapered tube lost foam casting mold.

[0018] In the picture: 1. Mounting base; 11. Placement platform; 111. Support rod; 112. Top plate; 113. Guardrail; 114. Positioning block; 12. Circular shell; 121. Reinforcing rib; 122. Rectangular groove; 123. Upper fixing ring; 13. Positioning plate; 2. Servo motor; 21. Threaded rod; 211. Threaded sleeve; 212. First multi-stage telescopic rod; 213. Circular slide groove; 214. Moving slider; 215. Connecting rod; 216. Circular sleeve; 217. Connecting rod; 22. Fixing plate; 23. Circular ring mounting plate; 231. Slide rail; 232. Fixing block; 233. Second multi-stage telescopic rod; 24. Rectangular cylinder; 241. Rectangular plug-in rod; 242. Placement plate; 3. Circular pressing plate; 31. Hydraulic cylinder; 32. Mounting block; 33. Swing arm. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0020] Example 1: like Figures 1 to 11As shown, a tapered tube lost foam casting mold includes a circular shell 12, an upper fixing ring 123 above the circular shell 12, a reinforcing rib 121 between the upper fixing ring 123 and the circular shell 12, four positioning blocks 114 above the circular shell 12, the four positioning blocks 114 being symmetrical to each other in pairs; a circular pressing plate 3 is also provided on one side of the circular shell 12, a hydraulic cylinder 31 is provided above the circular pressing plate 3, and an mounting block 32 is provided above the hydraulic cylinder 31. The circular pressing plate 3 is used to press the sand and gravel placed in the inner cavity of the circular shell 12; a driving assembly is provided above the circular shell 12, and a fixing plate 22 is provided in the inner cavity of the circular shell 12. The driving assembly is used to drive the fixing plate 22 to rotate and move vertically, and the fixing plate 22 is used to level the sand and gravel placed in the inner cavity of the circular shell 12. The drive assembly rotates the fixed plate 22 while also moving it vertically upwards, thus leveling the placed sand and gravel. Simultaneously, the drive assembly moves the circular pressing plate 3, allowing it to move above the circular housing 12, facilitating subsequent pressing of the sand and gravel within the plate. Furthermore, when the casting is complete, the drive assembly continues to rotate and move the fixed plate 22 vertically upwards, moving the positioning plate 13 to remove the workpiece.

[0021] like Figures 1 to 5 and Figures 7 to 10 As shown, in a specific embodiment, a placement platform 11 is also provided on both sides of the circular shell 12. The two placement platforms 11 are symmetrical to each other, and two symmetrical protective railings 113 are provided above each of the two placement platforms 11. A circular pressing plate 3 is placed on the placement platform 11. The inner cavity of the circular shell 12 also has four rectangular slots 122 distributed in a circular pattern. The four rectangular slots 122 are symmetrical to each other in pairs. A positioning plate 13 is also placed in the inner cavity of the circular shell 12, and four connecting blocks are provided on the side wall of the positioning plate 13. The connecting blocks and the rectangular slots 122 are aligned with each other. In this configuration, the positions of the placement platforms 11 and the positioning plate 13 are determined.

[0022] like Figures 1 to 5 As shown, further, a mounting base 1 is provided at the bottom of the circular shell 12, and four support rods 111 are provided above the mounting base 1. The four support rods 111 are symmetrical to each other in pairs, and a top plate 112 is provided above the four support rods 111. In this configuration, the installation position of the top plate 112 is determined.

[0023] Example 2: The difference between the above embodiments and this embodiment is that: Figures 1 to 6As shown, a tapered tube lost foam casting mold includes a drive assembly comprising a servo motor 2, which is positioned above a top plate 112. A threaded rod 21 is provided at the output end of the servo motor 2, movably passing through the top plate 112. A threaded sleeve 211 is engaged with the threaded rod 21, and two symmetrical first multi-stage telescopic rods 212 are provided on the threaded sleeve 211. The ends of the two first multi-stage telescopic rods 212 away from the threaded sleeve 211 are positioned on the top plate 112. This configuration determines the installation position and components of the drive assembly, ensuring that when the servo motor 2 operates, it can drive the threaded rod 21 to rotate, and when the threaded rod 21 rotates, it can drive the threaded sleeve 211 to move vertically.

[0024] like Figures 1 to 10 As shown in the specific embodiment, a circular groove 213 is provided at the bottom of the threaded sleeve 211. A movable slider 214 is slidably disposed on the circular groove 213. A connecting rod 215 is provided at the end of the movable slider 214 away from the circular groove 213, and a fixing plate 22 is connected to the end of the connecting rod 215 away from the movable slider 214. In this configuration, when the threaded rod 21 rotates, it can drive the connecting rod 217 to rotate. When the connecting rod 217 rotates, it can drive the connecting rod 215 to rotate with the assistance of the circular groove 213 and the movable slider 214.

[0025] like Figures 1 to 10 As shown, a circular sleeve 216 is further fitted onto the connecting rod 215, and a connecting rod 217 is provided on one side of the circular sleeve 216. The end of the connecting rod 217 away from the circular sleeve 216 is provided on the threaded rod 21. In this configuration, because the circular sleeve 216 is fitted onto the connecting rod 215, it is possible to ensure that the connecting rod 215 can move vertically and rotate.

[0026] like Figures 1 to 5 and Figures 7 to 10 As shown, further, a circular mounting plate 23 is provided at the bottom of the fixing plate 22, and a slide rail 231 is provided above the circular mounting plate 23. The slide rail 231 and the fixing plate 22 are slidably disposed. Four fixing blocks 232 are provided on the side wall of the circular mounting plate 23 in a circular arrangement. The four fixing blocks 232 respectively fit into the rectangular slot 122. A second multi-stage telescopic rod 233 is provided above two fixing blocks 232. The two second multi-stage telescopic rods 233 are symmetrical to each other, and the ends of the two second multi-stage telescopic rods 233 away from the fixing blocks 232 are disposed on the top plate 112. In this arrangement, it is ensured that when the connecting rod 215 rotates and moves vertically upward, it can drive the fixing plate 22 to rotate and move vertically upward. When the fixing plate 22 rotates and moves vertically upward, it can level the placed sand and gravel.

[0027] like Figures 1 to 5 and Figures 7 to 11 As shown, furthermore, each of the two fixing blocks 232 has a rectangular tube 24 at its bottom, and a placement plate 242 is provided inside the cavity of each of the two rectangular tubes 242. Each of the two placement plates 242 has a rectangular insertion rod 241 at its bottom. The two rectangular insertion rods 241 are symmetrical to each other and movably pass through the rectangular tubes 24. One end of each rectangular insertion rod 241, away from the placement plate 242, is mounted on the positioning plate 13. This configuration ensures that when the fixing plate 22 rotates and moves vertically upward, it can drive the annular mounting plate 23 to move vertically upward with the assistance of the fixing blocks 232 and the rectangular slot 122. Therefore, when the fixing block 232 moves vertically upward, it can drive the rectangular tube 24 to move vertically upward.

[0028] like Figures 1 to 3 As shown, a swing arm 33 is movably provided at the bottom of the threaded sleeve 211, with the other end of the swing arm 33 mounted on the mounting block 32. This configuration ensures that when the threaded sleeve 211 moves vertically, the mounting block 32 can be moved horizontally by the swing arm 33 with the assistance of the hydraulic cylinder 31, the circular pressing plate 3, and the guardrail 113 mounted on the placement platform 11.

[0029] Example 3: This invention also discloses a method for lost foam casting of tapered tubes, the steps of which are as follows: Step 1: The staff places the shrinking tube disappearing mold into the circular shell 12, and at the same time injects sand and gravel into the circular shell 12; Step 2: When the sand and gravel are placed in it, the staff can make the fixed plate 22 rotate and move vertically upward by using the drive component, so as to level the sand and gravel. At the same time, when the drive component moves vertically upward, it can also drive the mounting block 32 to move, thereby driving the circular pressing plate 3 to move. Step 3: When the fixing plate 22 leaves the inner cavity of the circular shell 12, the circular pressing plate 3 moves to the middle of the circular shell 12. At this time, the operator can control the hydraulic cylinder 31 to run, and drive the circular pressing plate 3 to compact the sand and gravel in the circular shell 12. Step 4: At this point, the workers can gradually proceed with the lost foam casting process for the shrink tube. Step 5: When the casting is completed, the staff will control the drive component to run again, which will drive the fixed plate 22 to rotate and move vertically upward. At the same time, the positioning plate 13 will be pulled up, thereby bringing out the cast workpiece. At this time, the circular pressing plate 3 can be moved to the placement platform 11 set on the other side.

[0030] The implementation principle of the tapered tube lost foam casting mold and its casting method in this embodiment is as follows: First, the staff placed the shrinking tube disappearing mold into the circular shell 12, and at the same time injected sand and gravel into the circular shell 12; When the sand and gravel are placed inside, the operator controls the servo motor 2 to run. When the servo motor 2 runs, it drives the threaded rod 21 to rotate. When the threaded rod 21 rotates, it drives the threaded sleeve 211 to move vertically. When the threaded sleeve 211 moves vertically, it drives the mounting block 32 to move horizontally with the help of the hydraulic cylinder 31, the circular pressing plate 3, and the guardrail 113 set on the placement platform 11 (at the same time, because the circular shell 12 is provided with a positioning block 114, it is further ensured that the circular pressing plate 3 can still move horizontally when it enters the circular shell 12. The guardrail 113 and the positioning block 114 are both L-shaped). Simultaneously, when the threaded rod 21 rotates, it can drive the connecting rod 217 to rotate. When the connecting rod 217 rotates, it can drive the connecting rod 215 to rotate with the assistance of the circular groove 213 and the movable slider 214 (because the connecting rod 215 is fitted with a circular sleeve 216, it can ensure that the connecting rod 215 can move vertically and rotate). When the connecting rod 215 rotates and moves vertically upward, it can drive the fixing plate 22 to rotate and move vertically upward. When the fixing plate 22 rotates and moves vertically upward, it can level the placed sand and gravel (when the fixing plate 22 rotates and moves vertically upward, it can drive the annular mounting plate 23 to move vertically upward with the assistance of the fixing block 232 and the rectangular slot 122. Therefore, when the fixing block 232 moves vertically upward, it can drive the rectangular cylinder 24 to move vertically upward). When the fixing plate 22 leaves the inner cavity of the circular shell 12, the circular pressing plate 3 moves to the middle of the circular shell 12. At this time, the operator can control the hydraulic cylinder 31 to run, and drive the circular pressing plate 3 to compact the sand and gravel in the circular shell 12 (and at this time, the placement plate 242 on the rectangular insertion rod 241 set in the rectangular tube 24 will be located at the bottom of the inner cavity of the rectangular tube 24). At this time, the operator can carry out the shrink tube lost foam work. When the casting is completed, the operator controls the servo motor 2 to run again, which can continue to drive the fixed plate 22 to rotate and move vertically upward. Since the placement plate 242 is located at the bottom of the inner cavity of the rectangular tube 24, when the fixed plate 22 moves vertically upward, it can pull the rectangular tube 24 to drive the placement plate 242 and the rectangular plug rod 241, and at the same time pull up the positioning plate 13, thereby bringing out the cast workpiece. At this time, the circular pressing plate 3 can move to the placement platform 11 set on the other side (and at this time, the swing arm 33 will not contact the connecting rod 215 and the fixed plate 22).

Claims

1. A tapered tube lost foam casting mold, comprising a circular shell (12), characterized in that: An upper fixing ring (123) is provided above the circular shell (12), and a reinforcing rib (121) is provided between the upper fixing ring (123) and the circular shell (12). Four positioning blocks (114) are provided above the circular shell (12), and the four positioning blocks (114) are symmetrical to each other in pairs. A circular pressing plate (3) is also provided on one side of the circular shell (12), a hydraulic cylinder (31) is provided above the circular pressing plate (3), and an installation block (32) is provided above the hydraulic cylinder (31). The circular pressing plate (3) is used to press the sand and gravel placed in the inner cavity of the circular shell (12). A driving assembly is provided above the circular shell (12), and a fixing plate (22) is provided in the inner cavity of the circular shell (12). The driving assembly is used to drive the fixing plate (22) to rotate and move vertically, and the fixing plate (22) is used to level the sand and gravel placed in the inner cavity of the circular shell (12).

2. The tapered tube lost foam casting mold according to claim 1, characterized in that, The circular shell (12) is also provided with a placement platform (11) on both sides. The two placement platforms (11) are symmetrical to each other. Two symmetrical guardrails (113) are provided above each of the two placement platforms (11). A circular pressing plate (3) is placed on the placement platform (11). The inner cavity of the circular shell (12) is also provided with four rectangular slots (122) distributed in a circle. The four rectangular slots (122) are symmetrical to each other. The inner cavity of the circular shell (12) is also provided with a positioning plate (13). The side wall of the positioning plate (13) is provided with four connecting blocks. The connecting blocks and the rectangular slots (122) are aligned with each other.

3. The tapered tube lost foam casting mold according to claim 1, characterized in that, The circular shell (12) has a mounting base (1) at its bottom, and four support rods (111) are provided above the mounting base (1). The four support rods (111) are symmetrical to each other, and a top plate (112) is provided above the four support rods (111).

4. The tapered tube lost foam casting mold according to claim 1, characterized in that, The drive assembly includes a servo motor (2), which is located above the top plate (112). The output end of the servo motor (2) is provided with a threaded rod (21), which is movably inserted through the top plate (112). A threaded sleeve (211) is engaged on the threaded rod (21), and two mutually symmetrical first multi-stage telescopic rods (212) are provided on the threaded sleeve (211). The ends of the two first multi-stage telescopic rods (212) away from the threaded sleeve (211) are located on the top plate (112).

5. A tapered tube lost foam casting mold according to claim 4, characterized in that, The threaded sleeve (211) has a circular groove (213) at the bottom. A movable slider (214) is slidably arranged on the circular groove (213). A connecting rod (215) is provided at the end of the movable slider (214) away from the circular groove (213). A fixing plate (22) is connected to the end of the connecting rod (215) away from the movable slider (214).

6. A tapered tube lost foam casting mold according to claim 5, characterized in that, A circular sleeve (216) is sleeved on the connecting rod (215), and a connecting rod (217) is provided on one side of the circular sleeve (216). The end of the connecting rod (217) away from the circular sleeve (216) is provided on the threaded rod (21).

7. A tapered tube lost foam casting mold according to claim 1, characterized in that, The bottom of the fixing plate (22) is provided with a circular mounting plate (23), and a slide rail (231) is provided above the circular mounting plate (23). The slide rail (231) and the fixing plate (22) are slidably arranged. The side wall of the circular mounting plate (23) is provided with four fixing blocks (232) arranged in a circular pattern. The four fixing blocks (232) respectively fit into the rectangular slot (122). A second multi-stage telescopic rod (233) is provided above two fixing blocks (232). The two second multi-stage telescopic rods (233) are symmetrical to each other. The ends of the two second multi-stage telescopic rods (233) away from the fixing blocks (232) are set on the top plate (112).

8. A tapered tube lost foam casting mold according to claim 7, characterized in that, The bottom of each of the two fixed blocks (232) is provided with a rectangular tube (24), the inner cavity of each of the two rectangular tubes (24) is provided with a placement plate (242), the bottom of each of the two placement plates (242) is provided with a rectangular plug rod (241), the two rectangular plug rods (241) are symmetrical to each other, the two rectangular plug rods (241) respectively move through the rectangular tube (24), and one end of each of the two rectangular plug rods (241) away from the placement plate (242) is provided on the positioning plate (13).

9. A tapered tube lost foam casting mold according to claim 4, characterized in that, The bottom of the threaded sleeve (211) is movably provided with a swing arm (33), and the other end of the swing arm (33) is provided on the mounting block (32).

10. A method for lost foam casting of tapered tubes, characterized in that, The method for casting a tapered tube lost foam mold, applicable to any one of claims 1 to 9, comprises the following steps: Step 1: The staff places the shrinking tube disappearing mold into the circular shell (12) and simultaneously injects sand into the circular shell (12); Step 2: When the sand and gravel are placed in it, the staff can make the fixed plate (22) rotate and move vertically upward by driving the component, so as to level the sand and gravel. At the same time, when the driving component moves vertically upward, it can also drive the mounting block (32) to move, thereby driving the circular pressing plate (3) to move. Step 3: When the fixing plate (22) leaves the inner cavity of the circular shell (12), the circular pressing plate (3) moves to the middle of the circular shell (12). At this time, the operator can control the hydraulic cylinder (31) to run and drive the circular pressing plate (3) to compact the sand and gravel in the circular shell (12). Step 4: At this point, the workers can gradually proceed with the lost foam casting process for the shrink tube. Step 5: When the casting is completed, the staff will control the drive component to run again, and will be able to drive the fixed plate (22) to rotate and move vertically upward. At the same time, the positioning plate (13) will be pulled up, thereby bringing out the cast workpiece. At this time, the circular pressing plate (3) will be able to move to the placement platform (11) set on the other side.

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