Foamed plastic pre-foaming device

Abstract

The utility model relates to the field of foamed plastic and discloses a foamed plastic pre-foaming device which comprises foaming equipment, a cover body is arranged on the upper surface of the foaming equipment, a foaming outlet is formed in the middle of the bottom end of the foaming equipment, and a gas conveying device is fixedly installed at the bottom of one side of the inner wall of the foaming equipment. A driving motor is installed in the middle of the top end of the cover body, a connecting rotating shaft is rotatably installed in the middle of the top end of the air conveying device and extends to the output end of the lower bottom face of the driving motor, a plurality of movable pipes are rotatably installed at the bottom of the outer surface of the connecting rotating shaft, and a plurality of air injection holes are formed in the outer surfaces of the movable pipes; according to the foamed plastic foaming device, a plurality of movable pipes rotate in different directions, so that the effect of sufficiently adding a foaming agent into foamed plastic is achieved, the mixing effect between the foamed plastic and the foaming agent is improved, the problem of uneven foaming of the foamed plastic during production is solved, and the overall processing efficiency of the foamed plastic is improved.

Description

Technical Field

[0001] The present application relates to the field of foam plastics, and in particular to a foam plastic pre-foaming device. Background Art

[0002] Foam plastic is a common plastic material with the characteristics of light weight, heat insulation and shock absorption, so it is widely used in packaging, filling, protection and some specific application fields. Foam plastic is usually represented by expanded polystyrene (EPS) or polyethylene (EPE). When foam plastic is pre-foamed, gas (usually a foaming agent) is injected into the plastic material to expand it during heating or pressurization to form a foam structure.

[0003] Mechanical foaming is a type of plastic foaming process, which uses mechanical stirring to mix gas into the material, and then forms foam plastic with pores through a shaping process. However, during the mechanical stirring process, a long time is required to stir the foaming material. Insufficient time may cause uneven gas content in the material, which in turn affects the overall foaming effect of the material, resulting in smaller or uneven pores in some materials, reducing the overall production and processing efficiency of the foam plastic.

[0004] In view of the above-mentioned related technologies, the inventor believes that there is a defect of uneven gas injection in the mechanical foaming process of foam plastics. Therefore, a foam plastic pre-foaming device is proposed to solve the above problem. Utility Model Content

[0005] In order to solve the problem of uneven gas injection during the mechanical foaming process of foam plastics, the present application provides a foam plastics pre-foaming device.

[0006] The present application provides a foam plastic pre-foaming device that adopts the following technical solution:

[0007] A foam plastic pre-foaming device comprises a foaming device, wherein a cover body is provided on the upper surface of the foaming device, a foaming outlet is provided in the middle of the bottom end of the foaming device, an air delivery device is fixedly installed at the bottom of one side of the inner wall of the foaming device, one end of the air delivery device extends to the outside of the foaming device and an air inlet pipe is installed, a driving motor is installed in the middle of the top of the cover body, a connecting shaft is rotatably installed in the middle of the top of the air delivery device and extends to the output end of the lower bottom surface of the driving motor, a plurality of movable tubes are rotatably installed at the bottom of the outer surface of the connecting shaft, a plurality of air injection holes are provided on the outer surface of the movable tube, a bevel gear ring is fixedly installed at the bottom of one side of the inner wall of the foaming device, a bevel gear is fixedly installed at the edge of one side of the movable tube, and an extrusion mechanism is also provided above the foaming device for extruding the stirred foaming material.

[0008] Preferably, the extrusion mechanism includes a fixed frame, which is fixedly installed on the upper surface of the cover body, and a cylinder is installed on the upper surface of the fixed frame. The output end of the lower bottom surface of the cylinder extends to the inside of the fixed frame where a connecting plate is installed. Both side edges of the bottom end of the connecting plate are fixedly connected with connecting rods, and the bottom end of the connecting rod extends through the cover body to the inside of the foaming equipment where a movable pressure plate is installed. The upper surface of the cover body extends through the movable pressure plate to the inside of the foaming equipment where a feed pipe is fixedly installed.

[0009] Preferably, a guide groove is opened on the inner wall of the foaming device near the bottom of the bevel gear ring, one side of the movable tube passes through the bevel gear fixed limit block, one side edge of the limit block is located inside the guide groove, and the guide groove and the limit block are interlocked.

[0010] Preferably, the top of one side of the outer surface of the bevel gear moves close to one side of the inner wall of the bevel gear ring, and the bevel gear ring and the bevel gear are meshed with each other.

[0011] Preferably, through holes are formed on both side edges of the top of the cover body, the outer diameter of the connecting rod is smaller than the inner diameter of the through hole, and the connecting rod and the through hole are coupled to each other.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] The foaming material is injected into the foaming equipment along the feeding pipe, and the rotating connecting shaft drives the movable tube and the air injection hole to stir the material. At the same time, the bevel gear ring cooperates with the bevel gear to drive the movable tube to rotate, and the foaming agent is injected into multiple movable tubes along the air inlet pipe, and is discharged through the air injection hole and stirred and mixed in the material, and the movable pressure plate is pressed down along the inside of the foaming equipment to extrude the stirred material from the foaming outlet. Compared with the prior art, this scheme has the effect of facilitating the full addition of the foaming agent to the foam plastic, improves the mixing effect between the foam plastic and the foaming agent, solves the problem of uneven foaming of the foam plastic during production, and improves the overall processing efficiency of the foam plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0015] Figure 2 It is a schematic diagram of the structure of the movable tube in the embodiment of the application;

[0016] Figure 3 It is a structural schematic diagram of the movable pressing plate in the application embodiment;

[0017] Explanation of the accompanying drawings: 1. Foaming equipment; 2. Cover body; 3. Foaming outlet; 4. Gas delivery device; 5. Air inlet pipe; 6. Driving motor; 7. Connecting shaft; 8. Movable pipe; 9. Air injection hole; 10. Bevel gear ring; 11. Bevel gear; 12. Guide groove; 13. Limit block; 14. Fixed frame; 15. Cylinder; 16. Connecting plate; 17. Connecting rod; 18. Movable pressure plate; 19. Feed pipe. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-3 This application is described in further detail.

[0019] The present application embodiment discloses a foam plastic pre-foaming device. Figure 1-3 A foam plastic pre-foaming device comprises a foaming device 1, a cover body 2 is arranged on the upper surface of the foaming device 1, a foaming outlet 3 is opened in the middle of the bottom end of the foaming device 1, a gas delivery device 4 is fixedly installed at the bottom of one side of the inner wall of the foaming device 1, an air inlet pipe 5 is installed at one end of the gas delivery device 4 extending to the outside of the foaming device 1, a driving motor 6 is installed in the middle of the top of the cover body 2, a connecting shaft 7 is rotatably installed in the middle of the top of the gas delivery device 4 and extends to the output end of the lower bottom surface of the driving motor 6, a plurality of movable tubes 8 are rotatably installed at the bottom of the outer surface of the connecting shaft 7, and a plurality of gas injection holes 9 are arranged on the outer surface of the movable tube 8, and the foaming device A bevel gear ring 10 is fixedly installed at the bottom of one side of the inner wall of the foaming device 1, and a bevel gear 11 is fixedly installed at one side edge of the movable tube 8. A guide groove 12 is opened on the inner wall of the foaming device 1 near the bottom of the bevel gear ring 10. One side of the movable tube 8 passes through the bevel gear 11 and is fixedly connected to a limiting block 13. One side edge of the limiting block 13 is located inside the guide groove 12. The guide groove 12 and the limiting block 13 are interlocked with each other. The top of one side of the outer surface of the bevel gear 11 is movable near one side of the inner wall of the bevel gear ring 10. The bevel gear ring 10 and the bevel gear 11 are meshed with each other. An extrusion mechanism is also provided on the top of the foaming device 1 for extruding the stirred foaming material.

[0020] By injecting the foaming material into the foaming equipment 1 along the material delivery pipe 19, starting the driving motor 6 to drive the connecting shaft 7 to rotate along the upper surface of the gas delivery device 4, the rotating connecting shaft 7 drives the movable tube 8 and the gas injection hole 9 to rotate synchronously to stir the foaming material, and at the same time, the movable movable tube 8 drives the bevel gear 11 to move along the outer surface of the bevel gear ring 10, and then the bevel gear ring 10 drives the bevel gear 11 and the movable tube 8 to rotate, the foaming agent is transported to the gas delivery device 4 along the air inlet pipe 5, injected into the multiple movable tubes 8 through the gas delivery device 4, and discharged outward through the multi-directional rotating gas injection holes 9, so that the foaming agent is stirred and mixed in the material, reflecting the full mixing effect of the foaming agent in the foaming equipment 1.

[0021] Reference Figure 2 and Figure 3The extrusion mechanism includes a fixing frame 14, which is fixedly mounted on the upper surface of the cover body 2, and a cylinder 15 is mounted on the upper surface of the fixing frame 14. The output end of the lower bottom surface of the cylinder 15 extends to the inside of the fixing frame 14 and a connecting plate 16 is mounted therein. Both sides of the bottom end of the connecting plate 16 are fixedly connected with connecting rods 17. The bottom end of the connecting rod 17 passes through the cover body 2 and extends to the inside of the foaming device 1 where a movable pressing plate 18 is mounted. A feed pipe 19 is fixedly mounted on the upper surface of the cover body 2 through the movable pressing plate 18 and extends to the inside of the foaming device 1. Through holes are formed on both sides of the top of the cover body 2. The outer diameter of the connecting rod 17 is smaller than the inner diameter of the through hole, and the connecting rod 17 and the through hole are coupled to each other.

[0022] By starting the cylinder 15, the connecting plate 16 moves downward along the inside of the fixed frame 14, so that the connecting plate 16 pushes the connecting rod 17 and the movable pressing plate 18 to move downward along the inside of the foaming equipment 1, and the movable pressing plate 18 presses down to extrude the stirred material from the foaming outlet 3, reflecting the foaming extrusion effect of the foam plastic after mechanical stirring.

[0023] The implementation principle of a foam plastic pre-foaming device in the embodiment of the present application is as follows: by injecting the foaming material into the foaming device 1 along the feeding pipe 19, starting the driving motor 6 to drive the connecting shaft 7 to rotate along the upper surface of the gas delivery device 4, so that the rotating connecting shaft 7 drives the movable tube 8 and the gas injection hole 9 to rotate synchronously to stir the foaming material, and at the same time, the movable movable tube 8 drives the bevel gear 11 to move along the outer surface of the bevel gear ring 10, and then the bevel gear ring 10 drives the bevel gear 11 and the movable tube 8 to rotate, and the foaming agent is transported to the inside of the gas delivery device 4 along the air inlet pipe 5, and is respectively injected into the multiple movable tubes 8 through the gas delivery device 4, and is discharged outward through the multi-directional rotating gas injection holes 9 , so that the foaming agent is stirred and mixed in the material, and the cylinder 15 is started to make the connecting plate 16 move downward along the inside of the fixed frame 14, so that the connecting plate 16 pushes the connecting rod 17 and the movable pressing plate 18 to move downward along the inside of the foaming equipment 1, so that the movable pressing plate 18 presses down to extrude the stirred material from the foaming outlet 3, and the input ends of the power supply of the driving motor 6 and the cylinder 15 are electrically connected to the output end of the external power supply; compared with the prior art, this scheme has the effect of facilitating the full addition of the foaming agent to the foam plastic, improves the mixing effect between the foam plastic and the foaming agent, solves the problem of uneven foaming of the foam plastic during production, and improves the overall processing efficiency of the foam plastic.

[0024] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0025] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0027] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A foam plastic pre-foaming device, comprising a foaming device (1), wherein the upper surface of the foaming device (1) is provided with a cover (2), and a foaming outlet (3) is provided in the middle of the bottom end of the foaming device (1), characterized in that: An air delivery device (4) is fixedly mounted at the bottom of one side of the inner wall of the foaming device (1), and an air inlet pipe (5) is installed at one end of the air delivery device (4) extending to the outside of the foaming device (1). A driving motor (6) is installed at the middle of the top of the cover body (2). A connecting shaft (7) is rotatably mounted at the middle of the top of the air delivery device (4) and extends to the output end of the bottom surface of the driving motor (6). A plurality of movable tubes (8) are rotatably mounted at the bottom of the outer surface of the connecting shaft (7), and a plurality of air injection holes (9) are arranged on the outer surface of the movable tube (8). A bevel gear ring (10) is fixedly mounted at the bottom of one side of the inner wall of the foaming device (1), and a bevel gear (11) is fixedly mounted on one side edge of the movable tube (8). An extrusion mechanism is also arranged above the foaming device (1) for extruding the stirred foaming material.

2. A foam plastic pre-foaming device according to claim 1, characterized in that: The extrusion mechanism comprises a fixed frame (14), the fixed frame (14) is fixedly mounted on the upper surface of the cover body (2), a cylinder (15) is mounted on the upper surface of the fixed frame (14), the output end of the lower bottom surface of the cylinder (15) extends to the interior of the fixed frame (14) and a connecting plate (16) is mounted thereon, both sides of the bottom end of the connecting plate (16) are fixedly connected to connecting rods (17), the bottom end of the connecting rod (17) passes through the cover body (2) and extends to the interior of the foaming device (1) and a movable pressing plate (18) is mounted thereon, and a material conveying pipe (19) is fixedly mounted on the upper surface of the cover body (2) and extends through the movable pressing plate (18) to the interior of the foaming device (1).

3. A foam plastic pre-foaming device according to claim 1, characterized in that: A guide groove (12) is provided on the inner wall of the foaming device (1) near the bottom of the bevel gear ring (10); one side of the movable tube (8) passes through the bevel gear (11) and is fixedly connected to a limit block (13); one side edge of the limit block (13) is located inside the guide groove (12); and the guide groove (12) and the limit block (13) are interlocked.

4. A foam plastic pre-foaming device according to claim 1, characterized in that: The top of one side of the outer surface of the bevel gear (11) moves close to one side of the inner wall of the bevel gear ring (10), and the bevel gear ring (10) and the bevel gear (11) are meshed with each other.

5. A foam plastic pre-foaming device according to claim 2, characterized in that: Through holes are provided on both side edges of the top end of the cover body (2); the outer diameter of the connecting rod (17) is smaller than the inner diameter of the through hole; the connecting rod (17) and the through hole are coupled to each other.

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