One-step forming method and device for wrapping flexible foam with polyurethane elastomer

Abstract

The invention relates to the technical field of soft foam forming, in particular to a polyurethane elastomer wrapped soft foam one-time forming method and device. The polyurethane elastomer wrapped soft foam one-time forming device comprises a base body, a feeding assembly and a forming assembly; the material guiding assembly comprises an outer feeding mechanism arranged in the foundation trench, an inner feeding mechanism arranged in the outer feeding mechanism, material guiding mechanisms arranged in the outer feeding mechanism and the inner feeding mechanism, reversing heads arranged in the material guiding mechanisms, and a power mechanism arranged on the base body and connected with the reversing heads. The forming assembly comprises a first forming component and a second forming component, the first forming component and the second forming component are symmetrically arranged in two mounting grooves, and an outer forming pipe and an inner forming pipe in the first forming component and the second forming component are arranged to be different in size or shape through arrangement of a reversing head and a power mechanism. Materials can be guided to the second forming component from the first forming component without shutdown, replacement is rapidly completed, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of flexible foam molding technology, specifically to a method and apparatus for one-time molding of flexible foam encapsulated with polyurethane elastomer. Background Technology

[0002] Polyurethane elastomer-encapsulated flexible foam one-piece molding polyurethane strips are made by injecting two liquid polyurethane materials separately to form a strip-shaped material with an outer layer of elastomer and a core layer of foamed flexible foam.

[0003] The polyurethane elastomer-encapsulated flexible foam one-time molding device disclosed in CN103112113B includes an outer tube, a core tube, a nut, a connector, a glue head seat, a quick connector I, a glue tube I, a glue inlet I, a plug, a quick connector II, a glue tube II, and a glue inlet II, which are fixedly connected to the glue head seat to form an integral unit.

[0004] However, when using the aforementioned polyurethane elastomer-encapsulated flexible foam one-time molding device, because the production process often requires the production of various polyurethane elastomer-encapsulated flexible foams of different shapes or diameters, the molding device needs to replace different outer tubes and core tubes when changing the products being produced, thus requiring machine downtime for replacement, which reduces production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a method and apparatus for one-time molding of polyurethane elastomer-encapsulated flexible foam, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: On the one hand, a polyurethane elastomer-encapsulated flexible foam one-step molding apparatus is provided, including: The substrate has a base groove and an installation groove provided on it; A feeding assembly is disposed within the base groove. The guiding assembly includes an outer feeding mechanism disposed within the base groove, an inner feeding mechanism disposed within the outer feeding mechanism, a guiding mechanism disposed within the outer feeding mechanism and the inner feeding mechanism, a reversing head disposed within the guiding mechanism, and a power mechanism disposed on the base and connected to the reversing head. A molding assembly comprises molding component one and molding component two symmetrically arranged in two mounting slots. Each molding component one and molding component two includes an outer molding mechanism disposed in the mounting slot and connected to the outer feeding mechanism, and an inner molding mechanism disposed in the outer molding mechanism and connected to the inner feeding mechanism. Elastomer material enters the outer feeding mechanism, and flexible foam material enters the inner feeding mechanism. The power mechanism opens one of the reversing heads, allowing the elastomeric material to enter the outer molding mechanism of molding component one through the guiding mechanism, and the flexible foam material to enter the inner molding mechanism of molding component one through the guiding mechanism. The materials are extruded and formed from the outer molding mechanism and the inner molding mechanism, respectively. The power mechanism closes the already opened reversing head and opens the closed guiding head on the other side, allowing both materials to be extruded and formed from molding component two. The power mechanism sprays water through the closed reversing head to rinse molding component one.

[0007] Preferably, the external feeding mechanism includes an external feeding cylinder disposed in the base groove, a top cover one disposed on the external feeding cylinder, and an external feeding pipe disposed on the top cover one; the internal feeding mechanism includes an internal feeding cylinder disposed inside the external feeding cylinder, a top cover two disposed on the internal feeding cylinder, and an internal feeding pipe disposed on the top cover two and passing through the top cover one.

[0008] Preferably, the elastomer material enters the outer feed cylinder through the outer feed pipe, and the flexible foam material enters the inner feed cylinder through the inner feed pipe.

[0009] Preferably, the material guiding mechanism includes an outer material channel and an inner material channel formed in the base body, an outer material guiding pipe disposed on the outer feed cylinder and inserted into the outer material channel, and an inner material guiding pipe disposed on the inner material cylinder and inserted through the outer feed cylinder and inserted into the inner material channel.

[0010] Preferably, the reversing head includes a base pipe disposed in the outer feed cylinder and one end inserted into the inner feed cylinder, reversing pipes disposed at both ends of the base pipe, a spray pipe inserted in the reversing pipe, a spray channel opened on the spray pipe, a connecting ring plate disposed on the spray pipe and located in the reversing pipe, a push spring sleeved on the spray pipe and connected to the connecting ring plate, a sealing ring and a water blocking plate disposed in both the outer guide pipe and the inner guide pipe, a fixing plate disposed on the spray pipe, a sealing block disposed on the fixing plate, and a water blocking block disposed on the water blocking plate.

[0011] Preferably, the power mechanism includes a guide cylinder that passes through the base body and is inserted into the outer feed cylinder and connected to the base pipe, a movable plate sleeved on the guide cylinder, a reversing telescopic rod disposed on the base body and connected to the movable plate, a pressure pump disposed on the movable plate, a pull pipe disposed on the pressure pump and connected to the connecting ring plate through the guide cylinder, and a force-bearing plate disposed on the movable plate and connected to the pull pipe.

[0012] Preferably, the reversing telescopic rod is used to drive the force plate to move, so that the force plate pulls the nozzle to move through the pull tube, so that the sealing block blocks the sealing ring, preventing material from passing through the outer guide pipe and the inner guide pipe, and causing the nozzle to move away from the sealing block, so that the pressurizing pump pumps water to the outer guide pipe and the inner guide pipe. The reversing telescopic rod drives the force plate to move in the opposite direction, and the push spring pulls the nozzle to move, so that the sealing block blocks the spray channel again, and the sealing block moves away from the sealing ring.

[0013] Preferably, the internal forming mechanism includes a base disposed in the mounting groove, an external connecting channel formed on the base and connected to the external material channel, an internal connecting channel formed on the base and connected to the internal material channel, and an internal forming tube inserted in the internal connecting channel.

[0014] Preferably, the outer forming mechanism includes an outer forming block disposed on the base, an outer forming groove disposed in the outer forming block and communicating with the outer connecting channel, and an outer forming tube inserted into the wall of the outer forming groove and wrapping the inner forming tube. The inner connecting channel receives the soft foam material fed from the inner material channel and extrudes it from the inner forming tube. The outer connecting channel receives the elastomeric material fed from the outer material channel and extrudes it from the outer forming tube and wraps the soft foam material.

[0015] On the other hand, a molding method based on the polyurethane elastomer-encapsulated flexible foam one-time molding apparatus described in any one of the above claims is also provided, comprising: S1: The elastomer material is fed into the outer feed cylinder through the outer feed pipe via the metering pump, and the soft foam material is fed into the inner feed cylinder through the inner feed pipe; S2: The reversing telescopic rod on one side drives the force plate to move, so that the force plate pulls the nozzle through the pull tube to move, so that the sealing block blocks the sealing ring, preventing the material from passing through the outer guide pipe and the inner guide pipe, and so that the nozzle leaves the sealing block, so that the pressurizing pump pumps water to the outer guide pipe and the inner guide pipe, so that the forming component stops extruding material and is cleaned; S3: At the same time, the reversing telescopic rod on the other side drives the force plate to move in the opposite direction, the push spring pulls the nozzle to move, so that the sealing block blocks the spray channel, and the sealing block leaves the sealing ring; S4: The inner connecting channel corresponding to the second molding component receives the soft foam material sent from the inner material channel and extrudes it from the inner molding tube. The outer connecting channel receives the elastomeric material sent from the outer material channel and extrudes it from the outer molding tube and encapsulates the soft foam material. That is, the second molding component extrudes the material and forms it.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention, by setting up a reversing head and a power mechanism, and by setting the outer and inner forming tubes in forming component one and forming component two to different sizes or shapes, allows the material to be guided from forming component one to forming component two without stopping the machine when it is necessary to change the shape of the polyurethane elastomer-encapsulated soft foam produced, thus quickly completing the change and improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the feeding assembly of the present invention; Figure 4 This is a cross-sectional view of the feeding assembly of the present invention; Figure 5 This is a schematic diagram of the structure of the annular head and the power mechanism of the present invention; Figure 6 This is a cross-sectional structural schematic diagram of the annular head and power mechanism of the present invention; Figure 7 This is a schematic diagram of the commutator structure of the present invention; Figure 8 This is a diagram showing the positional relationship of the tube in this invention; Figure 9 This is a schematic cross-sectional view of the substrate of the present invention; Figure 10 This is a cross-sectional structural schematic diagram of the molded component one of the present invention.

[0018] In the diagram: 1. Base; 2. Base trench; 3. Mounting trench; 4. Outer feed cylinder; 5. Top cover one; 6. Outer feed pipe; 7. Inner feed cylinder; 8. Top cover two; 9. Inner feed pipe; 10. Outer material channel; 11. Inner material channel; 12. Outer guide pipe; 13. Inner guide pipe; 14. Base pipe; 15. Reversing pipe; 16. Spray pipe; 17. Spray channel; 18. Connecting ring plate; 19. Push spring; 20. Sealing ring; 21. Water-blocking plate; 22. Fixing plate; 23. Sealing block; 24. Water-sealing block; 25. Guide tube; 26. Moving plate; 27. Reversing telescopic rod; 28. Pressure pump; 29. ​​Pull pipe; 30. Force plate; 31. Base; 32. External connecting channel; 33. Internal connecting channel; 34. Internal forming tube; 35. External forming block; 36. External forming groove; 37. External forming tube. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 10 The present invention provides a technical solution: A polyurethane elastomer-encapsulated flexible foam one-step molding device, comprising: The base 1 has a base groove 2 and an installation groove 3. The base groove 2 is located at the center of the base 1, and there are two installation grooves symmetrically arranged on the base 1.

[0021] The feeding assembly is located within the base trough 2. The guiding assembly includes an external feeding mechanism within the base trough 2, an internal feeding mechanism within the external feeding mechanism, a guiding mechanism within both the external and internal feeding mechanisms, a reversing head within the guiding mechanism, and a power mechanism mounted on the base 1 and connected to the reversing head. The external feeding mechanism includes an external feeding cylinder 4, a top cover 5, and an external feeding pipe 6. The external feeding cylinder 4 is located within the base trough 2 and is fixedly connected to the inner wall of the base trough 2 by means of clamps and bolts. The top cover 5 is mounted on the external feeding cylinder 4 and is fixedly connected to the external feeding cylinder 4 by means of sealing rings and bolts. The external feeding pipe 6 is mounted on the top cover 5 and is located within the external feeding cylinder 4. On the side wall, the outer feed pipe 6 is fixedly connected to the side wall of the outer feed cylinder 4 by welding or other means. The inner feed mechanism includes an inner feed cylinder 7, a top cover 8, and an inner feed pipe 9. The inner feed cylinder 7 is set inside the outer feed cylinder 4 and is fixedly connected to the feed cylinder by connecting rings and welding or other means. The top cover 8 is set on the inner feed cylinder 7 and is fixedly connected to the inner feed cylinder 7 by sealing rings and bolts or other means. The inner feed pipe 9 is set on the top cover 8 and passes through the top cover 5. The inner feed pipe 9 is fixedly connected to the top cover 8 by welding or other means. The inner feed pipe 9 is connected to the top cover 5 by sealing rings or other means. Elastomer material enters the outer feed cylinder 4 through the outer feed pipe 6, and soft foam material enters the inner feed cylinder 7 through the inner feed pipe 9.

[0022] The material guiding mechanism includes an outer material channel 10, an inner material channel 11, an outer material guide pipe 12, and an inner material guide pipe 13. The outer material channel 10 and the inner material channel 11 are located inside the base 1. The outer material guide pipe 12 is installed on the outer feed cylinder 4 and inserted into the outer material channel 10. The outer material guide pipe 12 is fixedly connected to the outer feed cylinder 4 by welding or other means. The outer material guide pipe 12 is connected to the inner material channel 7 by setting a sealing ring or other means. The inner material guide pipe 13 is installed on the inner material cylinder and passes through the outer feed cylinder 4 and is inserted into the inner material channel 11. The inner material guide pipe 13 is fixedly connected to the inner feed cylinder 7 and the outer feed cylinder 4 by welding or other means. The inner material guide pipe 13 is connected to the inner material channel 7 by setting a sealing ring or other means.

[0023] The reversing head includes a base pipe 14, a reversing pipe 15, a nozzle 16, a spray channel 17, a connecting ring plate 18, a push spring 19, a sealing ring 20, a water-blocking plate 21, a fixing plate 22, a sealing block 23, and a water-sealing block 24. The base pipe 14 is installed in the outer feed cylinder 4 and one end is inserted into the inner feed cylinder 7. The base pipe 14 is fixedly connected to the inner feed cylinder 7 by welding or by setting sealing rings and bolts. The reversing pipe 15 is installed at both ends of the base pipe 14. 15 is fixedly connected to the base pipe 14 by welding or other means. The nozzle 16 is inserted into the reversing pipe 15. The nozzle 16 is movably connected to the reversing pipe 15 by a movable sealing ring. The spray channel 17 is opened on the nozzle 16. The connecting ring plate 18 is set on the nozzle 16 and located in the reversing pipe 15. The connecting ring plate 18 is fixedly connected to the nozzle 16 by integral molding or other means. The push spring 19 is sleeved on the nozzle 16 and connected to the connecting ring plate 18. One end of the spring 19 is fixedly connected to the reversing pipe 15 by welding or other means, and the other end of the pushing spring 19 is fixedly connected to the connecting ring plate 18 by welding or other means. The sealing ring 20 is provided in both the outer guide pipe 12 and the inner guide pipe 13. The sealing ring 20 is fixedly connected to the outer guide pipe 12 or the inner guide pipe 13 by welding or other means. The water blocking plate 21 is provided in both the outer guide pipe 12 and the inner guide pipe 13. The water blocking plate 21 is fixedly connected to the outer guide pipe 12 or the inner guide pipe 13 by welding or other means. The fixing plate 22 is provided on the spray pipe 16. The fixing plate 22 is fixedly connected to the spray pipe 16 by welding or other means. The sealing block 23 is provided on the fixing plate 22. The sealing block 23 is fixedly connected to the fixing plate 22 by screws or adhesive. The water blocking block 24 is provided on the water blocking plate 21. The water blocking block 24 is fixedly connected to the water blocking plate 21 by screws or adhesive.

[0024] The power mechanism includes a guide cylinder 25, a movable plate 26, a reversing telescopic rod 27, a pressure pump 28, a pull pipe 29, and a force-bearing plate 30. The guide cylinder 25 passes through the base body 1 and is inserted into the outer feed cylinder 4, connecting to the base pipe 14. The guide cylinder 25 is fixedly connected to the outer feed cylinder 4, the base pipe 14, and the base body 1 by welding or other means. The movable plate 26 is sleeved on the guide cylinder 25 and is movably connected to the guide cylinder 25. The base pipe 14 guides the displacement of the movable plate 26. The reversing telescopic rod 27 is set on the base body 1 and is connected to the guide cylinder 26. The moving plate 26 is connected, and one end of the reversing telescopic rod 27 is fixedly connected to the base 1 by bolts or other means. The other end of the reversing telescopic rod 27 is fixedly connected to the moving plate 26 by bolts or other means. The pressure pump 28 is mounted on the moving plate 26 and is fixedly connected to the moving plate 26 by bolts or other means. The pull pipe 29 is mounted on the pressure pump 28 and is connected to the connecting ring plate 18 through the guide cylinder 25. One end of the pull pipe 29 is fixedly connected to the pressure pump 28 by flanges and bolts or other means. The other end of the pull pipe 29... One end passes through the guide tube 25, the base tube 14, and the reversing tube 15, and is then fixedly connected to the connecting ring plate 18 by means of flanges or other methods. A wire mesh is installed inside the pull tube 29, allowing it to be both flexible and strong. Pulleys are installed inside the guide tube 25, the base tube 14, and the reversing tube 15 to facilitate the turning of the pull tube 29. A force-bearing plate 30 is mounted on the moving plate 26 and connected to the pull tube 29. The force-bearing plate 30 is fixedly connected to the pull tube 29 by adhesive bonding, and also to the moving plate 26 by bolts or other means. Next, the reversing telescopic rod 27 is used to drive the force plate 30 to move, so that the force plate 30 pulls the nozzle 16 to move through the pull tube 29, so that the sealing block 23 blocks the sealing ring 20, preventing the material from passing through the outer guide pipe 12 and the inner guide pipe 13, and causing the nozzle 16 to leave the water sealing block 24, so that the pressurizing pump 28 pumps water to the outer guide pipe and the inner guide pipe 13. The reversing telescopic rod 27 drives the force plate 30 to move in the opposite direction, and the push spring 19 pulls the nozzle 16 to move, so that the water sealing block 24 blocks the spray channel 17 again, and the sealing block 23 leaves the sealing ring 20.

[0025] The molding components are symmetrically arranged in two mounting slots 3 as molding component one and molding component two. Both molding component one and molding component two include an outer molding mechanism located in the mounting slot 3 and connected to the outer feeding mechanism, and an inner molding mechanism located in the outer molding mechanism and connected to the inner feeding mechanism. The inner molding mechanism includes a base 31, an outer connecting channel 32, an inner connecting channel 33, and an inner molding tube 34. The base 31 is located in the mounting slot 3 and is fixedly connected to the side wall of the mounting slot 3 by bolts and sealing rings. The outer connecting channel 32 is located on the base 31 and connected to the outer material channel 10, and is connected to the outer material channel 10 by a connecting pipe. The inner connecting channel 33 is located on the base 31 and connected to the inner material channel 11. The inner molding tube 34 is inserted into the inner connecting channel 33 and is connected to the inner material channel 11 by a connecting pipe. The outer forming mechanism includes an outer forming block 35, an outer forming groove 36, and an outer forming tube 37. The outer forming block 35 is mounted on the base 31 and is fixedly connected to the base 31 by means of threaded connection or other means. The outer forming groove 36 is located inside the outer forming block 35 and communicates with the outer forming channel 32. The outer forming tube 37 is inserted into the wall of the outer forming groove 36 and wraps around the inner forming tube 34. The outer forming tube 37 is fixedly connected to the wall of the outer forming groove 36 by means of threaded connection or other means. The inner forming channel 33 receives the soft foam material fed from the inner material channel 11 and extrudes it from the inner forming tube 34. The outer forming channel 32 receives the elastomeric material fed from the outer material channel 10 and extrudes it from the outer forming tube 37 and wraps around the soft foam material.

[0026] Working principle: During use, the elastomer material enters the outer feed cylinder 4 through the outer feed pipe 6 via the metering pump, while the soft foam material enters the inner feed cylinder 7 through the inner feed pipe 9. The reversing telescopic rod 27 on one side drives the force plate 30 to move, causing the force plate 30 to pull the spray pipe 16 through the pull pipe 29. This causes the sealing block 23 to block the sealing ring 20, preventing material from passing through the outer guide pipe 12 and the inner guide pipe 13, and causing the spray pipe 16 to move away from the water sealing block 24. This causes the pressure pump 28 to pump water to the outer feed pipe and the inner guide pipe 13, stopping the molding component. The material is extruded and cleaned, while the reversing telescopic rod 27 on the other side drives the force plate 30 to move in the opposite direction, pushing the spring 19 to pull the nozzle 16 to move, so that the water sealing block 24 blocks the spray channel 17, the sealing block 23 leaves the sealing ring 20, and the inner connecting channel 33 corresponding to the second forming component receives the soft foam material sent from the inner material channel 11 and is extruded and formed from the inner forming tube 34. The outer connecting channel 32 receives the elastomeric material sent from the outer material channel 10 and is extruded and formed from the outer forming tube 37 and wraps the soft foam material. That is, the second forming component extrudes the material and forms it.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A one-step molding device for polyurethane elastomer-encapsulated flexible foam, characterized in that, include: The substrate has a base groove and an installation groove provided on it; A feeding assembly is disposed within the base groove. The guiding assembly includes an outer feeding mechanism disposed within the base groove, an inner feeding mechanism disposed within the outer feeding mechanism, a guiding mechanism disposed within the outer feeding mechanism and the inner feeding mechanism, a reversing head disposed within the guiding mechanism, and a power mechanism disposed on the base and connected to the reversing head. A molding assembly comprises molding component one and molding component two symmetrically arranged in two mounting slots. Each molding component one and molding component two includes an outer molding mechanism disposed in the mounting slot and connected to the outer feeding mechanism, and an inner molding mechanism disposed in the outer molding mechanism and connected to the inner feeding mechanism. Elastomer material enters the outer feeding mechanism, and flexible foam material enters the inner feeding mechanism. The power mechanism opens one of the reversing heads, allowing the elastomeric material to enter the outer molding mechanism of molding component one through the guiding mechanism, and the flexible foam material to enter the inner molding mechanism of molding component one through the guiding mechanism. The materials are extruded and formed from the outer molding mechanism and the inner molding mechanism, respectively. The power mechanism closes the already opened reversing head and opens the closed guiding head on the other side, allowing both materials to be extruded and formed from molding component two. The power mechanism sprays water through the closed reversing head to rinse molding component one.

2. The polyurethane elastomer-encapsulated flexible foam one-time molding device according to claim 1, characterized in that: The external feeding mechanism includes an external feeding cylinder disposed in the base groove, a top cover I disposed on the external feeding cylinder, and an external feeding pipe disposed on the feeding cylinder. The internal feeding mechanism includes an internal feeding cylinder disposed inside the external feeding cylinder, a top cover II disposed on the internal feeding cylinder, and an internal feeding pipe disposed on the top cover II and passing through the top cover I.

3. The polyurethane elastomer-encapsulated flexible foam one-time molding device according to claim 2, characterized in that: The elastomer material enters the outer feed cylinder through the outer feed pipe, and the flexible foam material enters the inner feed cylinder through the inner feed pipe.

4. The polyurethane elastomer-encapsulated flexible foam one-time molding device according to claim 2, characterized in that: The material guiding mechanism includes an outer material channel and an inner material channel formed in the base body, an outer material guiding pipe disposed on the outer feed cylinder and inserted into the outer material channel, and an inner material guiding pipe disposed on the inner material cylinder and inserted through the outer feed cylinder and into the inner material channel.

5. The polyurethane elastomer-encapsulated flexible foam one-time molding apparatus according to claim 4, characterized in that: The reversing head includes a base pipe disposed in the outer feed cylinder and one end inserted into the inner feed cylinder, reversing pipes disposed at both ends of the base pipe, a spray pipe inserted in the reversing pipe, a spray channel opened on the spray pipe, a connecting ring plate disposed on the spray pipe and located in the reversing pipe, a push spring sleeved on the spray pipe and connected to the connecting ring plate, a sealing ring and a water blocking plate disposed in both the outer guide pipe and the inner guide pipe, a fixing plate disposed on the spray pipe, a sealing block disposed on the fixing plate, and a water blocking block disposed on the water blocking plate.

6. The polyurethane elastomer-encapsulated flexible foam one-time molding apparatus according to claim 5, characterized in that: The power mechanism includes a guide cylinder that passes through the base body and is inserted into the outer feed cylinder and connected to the base pipe, a movable plate sleeved on the guide cylinder, a reversing telescopic rod disposed on the base body and connected to the movable plate, a pressure pump disposed on the movable plate, a pull pipe disposed on the pressure pump and connected to the connecting ring plate through the guide cylinder, and a force-bearing plate disposed on the movable plate and connected to the pull pipe.

7. The polyurethane elastomer-encapsulated flexible foam one-time molding apparatus according to claim 6, characterized in that: The reversing telescopic rod is used to drive the force plate to move, so that the force plate pulls the nozzle through the pull tube to move, so that the sealing block blocks the sealing ring, preventing material from passing through the outer guide pipe and the inner guide pipe, and causing the nozzle to move away from the sealing block, so that the pressurizing pump pumps water to the outer guide pipe and the inner guide pipe. The reversing telescopic rod drives the force plate to move in the opposite direction, and the push spring pulls the nozzle to move, so that the sealing block blocks the spray channel again, and the sealing block moves away from the sealing ring.

8. The polyurethane elastomer-encapsulated flexible foam one-time molding apparatus according to claim 5, characterized in that: The internal forming mechanism includes a base disposed in the mounting groove, an external connecting channel formed on the base and connected to the external material channel, an internal connecting channel formed on the base and connected to the internal material channel, and an internal forming tube inserted in the internal connecting channel.

9. The polyurethane elastomer-encapsulated flexible foam one-time molding apparatus according to claim 8, characterized in that: The outer forming mechanism includes an outer forming block disposed on the base, an outer forming groove disposed within the outer forming block and communicating with the outer connecting channel, and an outer forming tube inserted into the wall of the outer forming groove and enclosing the inner forming tube. The inner connecting channel receives the soft foam material fed from the inner material channel and extrudes it from the inner forming tube. The outer connecting channel receives the elastomeric material fed from the outer material channel and extrudes it from the outer forming tube and encloses the soft foam material.

10. A molding method for a polyurethane elastomer-encapsulated flexible foam one-time molding apparatus according to any one of claims 1-9, comprising: S1: The elastomer material is fed into the outer feed cylinder through the outer feed pipe via the metering pump, and the soft foam material is fed into the inner feed cylinder through the inner feed pipe; S2: The reversing telescopic rod on one side drives the force plate to move, so that the force plate pulls the nozzle through the pull tube to move, so that the sealing block blocks the sealing ring, preventing the material from passing through the outer guide pipe and the inner guide pipe, and so that the nozzle leaves the sealing block, so that the pressurizing pump pumps water to the outer guide pipe and the inner guide pipe, so that the forming component stops extruding material and is cleaned; S3: At the same time, the reversing telescopic rod on the other side drives the force plate to move in the opposite direction, the push spring pulls the nozzle to move, so that the sealing block blocks the spray channel, and the sealing block leaves the sealing ring; S4: The inner connecting channel corresponding to the second molding component receives the soft foam material sent from the inner material channel and extrudes it from the inner molding tube. The outer connecting channel receives the elastomeric material sent from the outer material channel and extrudes it from the outer molding tube and encapsulates the soft foam material. That is, the second molding component extrudes the material and forms it.

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