A forming mold for a bubble-free slow-rebound sponge

Abstract

The utility model discloses a kind of forming mould of bubble-free slow-rebound sponge, it is related to sponge forming mould technical field. Including upper die and lower die, upper die is placed in the upper end of lower die and is fixed by fixed component, the sidewall of the front and rear ends of lower die is fixedly installed with suction tube, the inner end of suction tube and the inner end of lower die are communicated, and fixedly installed with filter screen, by placing upper die in the upper end of lower die, and fixed by fixed component, then air inside mould is sucked away by suction tube, then the glue injection head of sponge production raw material is inserted into spigot two, and contact with limit ring, and downward thrust is applied to limit ring, let sleeve slide down, until spigot two is inserted into spigot one after passing through rubber sheet, glue injection in mould can be carried out, avoid the bubble in the sponge of forming, affect the quality of finished product.

Description

Technical Field

[0001] This utility model relates to the field of sponge molding technology, specifically a molding die for a bubble-free slow-rebound sponge. Background Technology

[0002] Pillows are an essential item in our daily lives, and foam pillows are crucial bedding for sleep. Their comfort directly affects our sleeping state. Given the diverse differences in human bodies, the best approach is to customize foam pillows to meet individual dimensions and needs. This is more beneficial for the physiological structure of the cervical spine and head.

[0003] When using current rapid prototyping equipment for slow rebound sponge pillows, excessive air in the mold can easily lead to numerous air bubbles in the finished product, affecting its quality. Utility Model Content

[0004] This invention provides a molding die for bubble-free slow-rebound sponge, which solves the problem mentioned in the background art that when there is too much air in the mold, it will easily lead to a lot of air bubbles in the finished product, affecting the quality of the finished product.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a molding mold for bubble-free slow rebound sponge, including an upper mold and a lower mold, the upper mold is placed on the upper end of the lower mold and fixed by a fixing component, and air extraction pipes are fixedly installed on the side walls at both the front and rear ends of the lower mold, the inner end of the air extraction pipe is connected to the inner end of the lower mold, and a filter screen is fixedly installed thereon.

[0006] The upper part of the upper mold has a feed port in the middle. A sealing component is installed in the feed port. The sealing component includes a cylinder one. An installation ring is fixedly installed at the upper end of the cylinder one, and a cylinder two is threadedly connected to the lower end. The cylinder one and the cylinder two are inserted into the feed port. The installation ring is located on the outer side of the upper end of the feed port and is fixed by bolts.

[0007] Furthermore, the fixing component includes a fixing plate and a rotating frame. The fixing plate is fixed to the outer walls of the left and right ends of the upper mold and the lower mold, respectively. The rotating frame is U-shaped and is located on the left and right sides of the upper mold and the lower mold, respectively. The lower end of the rotating frame is rotatably connected to a fixing plate, and the upper end of the rotating frame is threaded with a hand-tightening bolt. One end of the hand-tightening bolt passes through the upper side wall of the rotating frame and is rotatably connected to a push plate. The push plate can abut against the upper end of another fixing plate.

[0008] Furthermore, ear plates two are fixedly installed at both ends of the upper mold, and through holes are provided on the side walls of ear plates two. Ear plates one are fixedly installed on the side walls of both ends of the lower mold, ear plates one is located directly below ear plates two, and a positioning post is fixedly installed at the upper end of ear plates one, and the upper end of the positioning post can slide through the through holes.

[0009] Furthermore, a first insert sleeve is fixedly installed at the upper end of the second cylinder, and a sleeve is provided at the upper end of the first insert sleeve. A rubber ring is fixedly installed on the outer wall of the sleeve, and the outer wall of the rubber ring is in contact with the inner wall of the first cylinder.

[0010] Furthermore, the diameter of the sleeve is larger than the diameter of the first insert sleeve, and the second insert sleeve is fixedly installed on the inner side of the upper end of the sleeve, with the outer diameter of the second insert sleeve being smaller than the inner diameter of the first insert sleeve.

[0011] Furthermore, a fixing ring is fixedly installed on the inner side of the lower end of the sleeve, and several rubber sheets are fixedly installed on the upper end of the fixing ring. The outer walls of the several rubber sheets are pressed and contacted with each other, and an elastic sheet is fixedly installed on the upper end of each rubber sheet.

[0012] Furthermore, a spring is fixedly installed at the lower end of the rubber ring, and the lower end of the spring is fixedly installed at the upper end of the cylinder.

[0013] This invention provides a molding die for bubble-free slow-rebound sponge. It has the following beneficial effects:

[0014] By placing the upper mold on top of the lower mold and fixing it with a fixing component, the air inside the mold is then removed through an air extraction pipe. Next, the injection head of the sponge production material is inserted into the second insert sleeve and contacts the limiting ring. A downward pushing force is applied to the limiting ring, causing the sleeve to slide down until the second insert sleeve passes through the rubber sheet and is inserted into the first insert sleeve. This allows the glue to be injected into the mold, preventing air bubbles from forming in the molded sponge and affecting the quality of the finished product. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the inner end structure of the lower mold of this utility model;

[0018] Figure 4 This is a schematic diagram showing the connection between cylinder one and cylinder two of this utility model;

[0019] Figure 5 This is a schematic cross-sectional view of cylinder one and cylinder two of this utility model.

[0020] In the diagram: 1. Upper mold; 2. Lower mold; 3. Evacuation pipe; 4. Ear plate one; 5. Ear plate two; 6. Positioning post; 7. Through hole; 8. Fixing plate; 9. Rotating frame; 10. Hand-tightening bolt; 11. Push plate; 12. Filter screen; 13. Inlet; 14. Cylinder one; 15. Mounting ring; 16. Cylinder two; 17. Insert sleeve one; 18. Sleeve; 19. Insert sleeve two; 20. Rubber ring; 21. Spring; 22. Fixing ring; 23. Rubber sheet; 24. Elastic sheet; 25. Limiting ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a molding die for bubble-free slow-rebound sponge, including an upper die 1 and a lower die 2. The upper die 1 is placed on top of the lower die 2 and fixed by a fixing component, which includes a fixing plate 8 and a rotating frame 9. The fixing plate 8 is fixed to the outer walls of the left and right ends of the upper die 1 and the lower die 2, respectively. The rotating frame 9 is U-shaped and located on the left and right sides of the upper die 1 and the lower die 2, respectively. The lower end of the rotating frame 9 is rotatably connected to a fixing plate 8, and the upper end of the rotating frame 9 is threaded. A hand-tightening bolt 10 is attached, one end of which passes through the upper side wall of the rotating frame 9 and is rotatably connected to a push plate 11. The push plate 11 can abut against the upper end of another fixed plate 8. In use, the upper mold 1 is placed on the upper end of the lower mold 2, and then the rotating frame 9 is rotated upward to rotate the push plate 11 to the upper end of the upper fixed plate 8. Then, the hand-tightening bolt 10 is tightened to drive the push plate 11 to abut against the upper end of the fixed plate 8, thereby fixing the upper mold 1 on the upper end of the lower mold 2, which facilitates quick assembly and disassembly of the mold.

[0023] Air extraction pipes 3 are fixedly installed on the side walls at both ends of the lower mold 2. The inner end of the air extraction pipe 3 is connected to the inner end of the lower mold 2 and a filter screen 12 is fixedly installed thereon. The filter screen 12 is fixedly installed on the inner wall of the lower mold 2. The air extraction pipe 3 is connected to an external air pump, which can extract air from the inside of the mold to prevent air bubbles from appearing in the finished product after glue injection due to excessive air inside the mold. When injecting glue into the mold, the filter screen 12 can prevent the glue from entering the air extraction pipe 3.

[0024] The upper mold 1 has an inlet 13 at the middle of its upper end. A sealing component is installed inside the inlet 13. The sealing component includes a first cylinder 14. An installation ring 15 is fixedly installed at the upper end of the first cylinder 14, and a second cylinder 16 is threadedly connected to the lower end. The first cylinder 14 and the second cylinder 16 are inserted into the inlet 13. The installation ring 15 is located on the outer side of the upper end of the inlet 13 and is fixed by bolts, thus fixing the first cylinder 14 and the second cylinder 16 inside the inlet 13.

[0025] A connector 17 is fixedly installed at the upper end of cylinder 16. A sleeve 18 is provided at the upper end of connector 17. A rubber ring 20 is fixedly installed on the outer wall of sleeve 18. The outer wall of rubber ring 20 contacts the inner wall of cylinder 14. When connector 17 moves inside cylinder 14, rubber ring 20 slides on the inner wall of cylinder 14, sealing the space between sleeve 18 and cylinder 14. The diameter of sleeve 18 is larger than the diameter of connector 17. A second insert sleeve 19 is fixedly installed on the inner side of the upper end of the sleeve 18. The outer diameter of the second insert sleeve 19 is smaller than the inner diameter of the first insert sleeve 17. A limit ring 25 is fixedly installed on the inner side of the upper end of the second insert sleeve 19. When injecting glue into the mold, the glue injection head is inserted into the second insert sleeve 19 and contacts the limit ring 25, and applies a downward pushing force to the limit ring 25, so that the sleeve 18 slides down until the second insert sleeve 19 is inserted into the first insert sleeve 17, and then the glue can be injected into the mold.

[0026] A fixing ring 22 is fixedly installed on the inner side of the lower end of the sleeve 18. Several rubber sheets 23 are fixedly installed on the upper end of the fixing ring 22. The outer walls of the rubber sheets 23 are pressed against each other to form a circular plate, which seals the inner end of the sleeve 18. An elastic sheet 24 is fixedly installed on the upper end of each rubber sheet 23. The elastic sheet 24 is made of elastic steel sheet and has good deformation and restoring ability. When there is no external force, the elastic sheet 24 provides support for the rubber sheet 23, so that it seals the inner end of the sleeve 18. When the sleeve 18 moves down, the insertion tube 17 can push the rubber sheet 23 and the elastic sheet 24 up to allow the insertion tube 17 to pass through.

[0027] Specifically, by placing the upper mold 1 on top of the lower mold 2 and fixing it with a fixing component, the air inside the mold is then removed. Next, the injection head of the sponge production material is inserted into the second insertion tube 19 and contacts the limiting ring 25. A downward pushing force is applied to the limiting ring 25, causing the sleeve 18 to slide down until the second insertion tube 19 passes through the rubber sheet 23 and is inserted into the first insertion tube 17. This allows for the injection of glue into the mold, preventing air bubbles from forming in the molded sponge and affecting the quality of the finished product.

[0028] like Figure 1As shown, in some embodiments, ear plates 2 5 are fixedly installed at both the front and rear ends of the upper mold 1. Through holes 7 are provided on the side walls of ear plates 2 5. Ear plates 1 4 are fixedly installed on the side walls of both the front and rear ends of the lower mold 2. Ear plates 1 4 are located directly below ear plates 2 5. A positioning post 6 is fixedly installed at the upper end of ear plates 1 4. The upper end of the positioning post 6 can slide through the through hole 7. More specifically, when the upper mold 1 is installed at the upper end of the lower mold 2, the upper mold 1 can be quickly and accurately placed in place by allowing the positioning post 6 to pass through the through hole 7. The operation is simple and quick.

[0029] like Figure 5 As shown, in some embodiments, a spring 21 is fixedly installed at the lower end of the rubber ring 20, and the lower end of the spring 21 is fixedly installed at the upper end of the cylinder 16. When the spring 21 is in a balanced state, the rubber sheet 23 is located above the insertion cylinder 17. More specifically, when the sleeve 18 is pushed down, the sleeve 18 moves down by compressing the spring 21. After the glue injection is finished, the sleeve 18 is reset under the reaction force of the spring 21, and the rubber sheet 23 is reset under the force of the elastic sheet 24.

[0030] Working principle:

[0031] Step 1: When installing the upper mold 1, let the positioning pin 6 pass through the through hole 7, and the upper mold 1 can be quickly installed on the upper end of the lower mold 2. Then, fix the upper mold 1 with the fixing component. Next, install the air pump on the air extraction pipe 3 to remove the air inside the mold.

[0032] Step 2: When injecting glue, insert the glue injection head of the sponge production raw material into the second insertion tube 19 and make contact with the limiting ring 25. Apply a downward pushing force to the limiting ring 25 to make the sleeve 18 slide down until the second insertion tube 19 passes through the rubber sheet 23 and is inserted into the first insertion tube 17, and then the glue can be injected into the mold.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A molding die for bubble-free slow-rebound sponge, comprising an upper die (1) and a lower die (2), characterized in that, The upper mold (1) is placed on the upper end of the lower mold (2) and fixed by a fixing component. The front and rear ends of the lower mold (2) are both fixedly installed with air extraction pipes (3). The inner end of the air extraction pipe (3) is connected to the inner end of the lower mold (2) and a filter screen (12) is fixedly installed thereon. The upper mold (1) has an inlet (13) in the middle of its upper end. A sealing component is installed in the inlet (13). The sealing component includes a cylinder (14). An installation ring (15) is fixedly installed on the upper end of the cylinder (14), and a cylinder (16) is threadedly connected to the lower end. The cylinder (14) and the cylinder (16) are inserted into the inlet (13). The installation ring (15) is located on the outer side of the upper end of the inlet (13) and is fixed by bolts.

2. The molding die for a bubble-free slow-rebound sponge according to claim 1, characterized in that: The fixing components include a fixing plate (8) and a rotating frame (9). The fixing plate (8) is fixed on the outer walls of the left and right ends of the upper mold (1) and the lower mold (2), respectively. The rotating frame (9) is U-shaped and is located on the left and right sides of the upper mold (1) and the lower mold (2), respectively. The lower end of the rotating frame (9) is rotatably connected to a fixing plate (8). The upper end of the rotating frame (9) is threaded with a hand-tightening bolt (10). One end of the hand-tightening bolt (10) passes through the upper side wall of the rotating frame (9) and is rotatably connected to a push plate (11). The push plate (11) can abut against the upper end of another fixing plate (8).

3. The molding die for a bubble-free slow-rebound sponge according to claim 1, characterized in that: The upper mold (1) is fixedly installed with ear plates two (5) at both ends. The ear plates two (5) have through holes (7) on their side walls. The lower mold (2) is fixedly installed with ear plates one (4) at both ends. The ear plates one (4) is located directly below the ear plates two (5). The upper end of the ear plates one (4) is fixedly installed with a positioning post (6). The upper end of the positioning post (6) can slide through the through hole (7).

4. The molding die for a bubble-free slow-rebound sponge according to claim 1, characterized in that: The upper end of the second cylinder (16) is fixedly installed with a first plug-in cylinder (17), and the upper end of the first plug-in cylinder (17) is provided with a sleeve (18). A rubber ring (20) is fixedly installed on the outer wall of the sleeve (18), and the outer wall of the rubber ring (20) is in contact with the inner wall of the first cylinder (14).

5. The molding die for a bubble-free slow-rebound sponge according to claim 4, characterized in that: The diameter of the sleeve (18) is larger than the diameter of the first plug-in sleeve (17). The second plug-in sleeve (19) is fixedly installed on the inner side of the upper end of the sleeve (18). The outer diameter of the second plug-in sleeve (19) is smaller than the inner diameter of the first plug-in sleeve (17).

6. The molding die for a bubble-free slow-rebound sponge according to claim 5, characterized in that: A fixing ring (22) is fixedly installed on the inner side of the lower end of the sleeve (18). Several rubber sheets (23) are fixedly installed on the upper end of the fixing ring (22). The outer walls of the several rubber sheets (23) are pressed and contacted with each other. An elastic sheet (24) is fixedly installed on the upper end of each rubber sheet (23).

7. The molding die for a bubble-free slow-rebound sponge according to claim 5, characterized in that: A spring (21) is fixedly installed at the lower end of the rubber ring (20), and the lower end of the spring (21) is fixedly installed at the upper end of the cylinder (16).

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