A foaming molding device for biodegradable plastics

Abstract

This invention provides a biodegradable plastic foaming molding device, including a foaming shell and a molding frame shell, which are connected by multiple support columns. A mixing component is disposed within the inner cavity of the foaming shell and is used for foaming the biodegradable plastic. A mixing and extrusion component is disposed below the foaming shell and is drivenly connected to the mixing component. The mixing and extrusion component is used for foaming and extruding the biodegradable plastic. This invention utilizes the mixing component to mix the biodegradable plastic material from multiple directions, ensuring thorough mixing of the biodegradable plastic with the introduced gas, resulting in more uniform micropores formed during foaming. Simultaneously, the mixing and extrusion component facilitates the feeding of the biodegradable plastic from the foaming shell into the molding component, and makes the discharge of the foaming shell faster and more convenient, thereby improving the efficiency of biodegradable plastic molding.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing, and in particular to a biodegradable plastic foaming molding device. Background Technology

[0002] Biodegradable plastics are polymeric materials that gradually decompose into simple chemical substances (such as water, carbon dioxide, methane, and biomass) in the natural environment under the influence of microorganisms, water, light, and heat, without posing a threat to the environment and ecosystem. Biodegradable plastics are a relatively new sustainable development technology that, by improving the biodegradability of plastic materials, reduces plastic pollution and plays a significant role in environmental protection and sustainable development. Biodegradable plastics can be used to manufacture various packaging materials; they can be used to manufacture agricultural films, replacing traditional PE mulch films, reducing soil pollution, and promoting the development of green agriculture; they can be used to manufacture medical supplies, ensuring hygiene and safety while reducing the difficulty of medical waste disposal; and they can be used to manufacture building materials.

[0003] Biodegradable plastic foaming molding is a process that uses biodegradable plastic materials to introduce gas through physical or chemical methods to form a microporous structure. In the authorized Chinese utility model patent "Announcement No.: CN206983107U, Title: An Integrated Foam Plastic Foaming Molding Machine", the foam plastic particles produced are dropped into a storage chamber under gravity through valve one. The storage chamber serves to store and buffer the particles. Valve two is used to allow the foam plastic particles to fall into the molding mold, where they are pressed into foam plastic boards. However, in the above application, the foam plastic particles are dropped by gravity. Since the plastic particles have relatively low gravity, the dropping speed is low, and the material discharge is difficult, affecting the efficiency of plastic foaming molding. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects in the prior art, such as the difficulty in feeding and discharging materials, which affects the efficiency of plastic foaming molding, and to provide a biodegradable plastic foaming molding device.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This invention provides a biodegradable plastic foaming molding device, comprising a foaming shell and a molding frame shell, wherein the foaming shell and the molding frame shell are connected by multiple support columns.

[0007] A mixing assembly is disposed in the inner cavity of the foam shell, and the mixing assembly is used for foaming biodegradable plastics;

[0008] A compounding and extrusion assembly is disposed below the foaming shell and is connected to a mixing assembly. The compounding and extrusion assembly is used for foaming and extruding biodegradable plastics.

[0009] A molding component is disposed in the inner cavity of a molding frame, and the molding component is used for molding biodegradable plastics.

[0010] In this technical solution, the mixing component can mix the biodegradable plastic material from multiple directions, so that the biodegradable plastic and the introduced gas are fully mixed, making the micropores formed by the foaming of the biodegradable plastic more uniform.

[0011] Meanwhile, the use of the co-extrusion assembly makes it easier to feed the biodegradable plastic inside the foam shell into the molding assembly for molding. The co-extrusion assembly also makes the discharge of the foam shell faster and more convenient, thereby improving the efficiency of biodegradable plastic molding.

[0012] Preferably, the mixing assembly includes a rotating shaft disposed within the inner cavity of the foam shell;

[0013] The rotating shaft surface is connected to a central bevel gear, and the central bevel gear is meshed with multiple side bevel gears arranged in a circular array on its side.

[0014] A mixing shaft is connected to one side of the bevel gear, and multiple mixing blades are connected to the surface of the mixing shaft.

[0015] In this technical solution, the mixing component can be used to stir and mix the materials inside the foam shell.

[0016] Preferably, the top surface of the foamed shell is provided with a rotating hole, and the bottom end of the rotating shaft is rotatably connected to the top surface of the foamed shell through the rotating hole;

[0017] The top end of the rotating shaft is connected to the output end of the drive source, and the drive source is connected to the top of the foam shell.

[0018] In this technical solution, a drive source can be used to provide driving force for the rotation of the rotating shaft.

[0019] Preferably, a protective shell is provided on the outer side of the central bevel gear and the side bevel gear, and a plurality of fixing posts are connected to the top of the protective shell, with the top of the fixing posts connected to the inner wall of the top surface of the foam shell.

[0020] In this technical solution, the center bevel gear and the side bevel gear can be protected by a protective housing.

[0021] Preferably, the protective housing has multiple mounting holes on its side, one end of the mixing shaft is rotatably connected to the side of the protective housing, and the other end of the mixing shaft is rotatably connected to the inner wall of the foam housing.

[0022] In this technical solution, the mixing shaft can be connected to the side of the protective housing through the mounting hole.

[0023] Preferably, the extrusion assembly includes an extrusion cylinder connected to the bottom of the foam shell, and the bottom surface of the extrusion cylinder is fixedly connected to the top surface of the molding frame shell through the cylinder, and the outlet end of the extrusion cylinder is connected to the molding assembly.

[0024] A conveying auger is provided in the inner cavity of the extrusion cylinder, and the top end of the conveying auger is connected to the bottom end of the rotating shaft.

[0025] In this technical solution, the material inside the foamed shell can be easily discharged by using the extrusion assembly.

[0026] Preferably, the molding component includes an upper molding template and a lower molding template, the top of the upper molding template is connected to the outlet end of the mixing and extrusion component, and the lower molding template is disposed below the upper molding template;

[0027] The bottom of the lower forming template is connected to the top of the lifting device, and the lifting device is connected to the inner wall of the bottom surface of the forming frame.

[0028] In this technical solution, the molding components facilitate the foaming and molding of biodegradable plastics.

[0029] Preferably, reinforcing plates are connected to both sides of the upper forming template, and fixed shafts are connected to both sides of the lower forming template;

[0030] The inner wall of the foamed shell is connected to multiple fixed shafts. The surface of the fixed shaft is fixedly connected to the reinforcing plate through the shaft, and the surface of the fixed shaft is slidably connected to the anti-deviation plate through the shaft.

[0031] In this technical solution, the movement trajectory of the anti-deviation plate and the lower forming template can be limited by using a fixed axis.

[0032] Preferably, multiple control tube assemblies are connected to both the side surface of the molded frame shell and the top surface of the foamed shell.

[0033] In this technical solution, the control tube assembly can be used to introduce gas into the foam shell and the molding frame shell, thereby controlling the operation inside the foam shell and the molding frame shell.

[0034] Preferably, the bottom of the molded frame is equipped with multiple casters.

[0035] In this technical solution, the use of movable wheels makes it easy to move the molded frame and other structures.

[0036] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0037] The positive and progressive effects of this utility model are as follows:

[0038] This invention utilizes a mixing component to mix biodegradable plastic materials from multiple directions, ensuring thorough mixing of the biodegradable plastic with the introduced gas, resulting in more uniform micropores formed during the foaming of the biodegradable plastic.

[0039] Meanwhile, the use of the co-extrusion assembly makes it easier to feed the biodegradable plastic inside the foam shell into the molding assembly for molding. The co-extrusion assembly also makes the discharge of the foam shell faster and more convenient, thereby improving the efficiency of biodegradable plastic molding.

[0040] At the same time, the reverse rotation of the mixing and extrusion component can turn the biodegradable plastic material located below upwards. Combined with the mixing component, this allows the material inside the foam shell to be fully turned over and mixed, which can improve the mixing efficiency of the biodegradable plastic material inside the foam shell. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the biodegradable plastic foaming molding device according to an embodiment of the present invention.

[0042] Figure 2 for Figure 1 The diagram shows the overall front view of the biodegradable plastic foaming molding device.

[0043] Figure 3 for Figure 1 The diagram shows a front cross-sectional view of the biodegradable plastic foaming molding device.

[0044] Figure 4 for Figure 1 The diagram shows a top view of the overall structure of the biodegradable plastic foaming molding device.

[0045] Figure 5 for Figure 1 The diagram shows a three-dimensional structural representation of the connection relationship between the mixing component and the extrusion component of the biodegradable plastic foaming molding device.

[0046] Figure 6 for Figure 1 The diagram shows the connection structure between the central bevel gear, the side bevel gear, and the mixing shaft of the biodegradable plastic foaming molding device.

[0047] Explanation of reference numerals in the attached figures

[0048] 1. Foamed outer shell;

[0049] 2. Molded frame shell;

[0050] 3. Support columns;

[0051] 4. Mixing assembly; 41. Rotating shaft; 42. Center bevel gear; 43. Side bevel gear; 44. Mixing shaft; 45. Mixing blade; 46. Drive source; 47. Protective housing; 48. Fixing column;

[0052] 5. Extrusion assembly; 51. Extrusion cylinder; 52. Conveying auger;

[0053] 6. Molding components; 61. Upper molding template; 62. Lower molding template; 63. Lifting device; 64. Reinforcing plate; 65. Fixed shaft; 66. Anti-deviation plate;

[0054] 7. Casters. Detailed Implementation

[0055] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0056] Figures 1 to 6 The diagram shown is a structural schematic of an embodiment of the biodegradable plastic foaming molding device of this invention. The biodegradable plastic foaming molding device includes a foaming shell 1 and a molding frame shell 2, which are connected by multiple support columns 3.

[0057] Mixing component 4, which is disposed in the inner cavity of foam shell 1, is used to foam biodegradable plastic;

[0058] The extrusion assembly 5 is disposed below the foam shell 1 and is connected to the mixing assembly 4. The extrusion assembly 5 is used for foaming and extruding biodegradable plastics.

[0059] Molding component 6 is disposed in the inner cavity of molding frame shell 2 and is used for molding biodegradable plastics.

[0060] In this technical solution, the mixing component 4 can mix the biodegradable plastic material from multiple directions, so that the biodegradable plastic and the introduced gas are fully mixed, making the micropores formed by the foaming of the biodegradable plastic more uniform.

[0061] Meanwhile, the extrusion assembly 5 facilitates the feeding of biodegradable plastic from the foamed shell 1 into the molding assembly 6 for molding. The extrusion assembly 5 also makes the discharge of the foamed shell 1 faster and more convenient, thereby improving the efficiency of biodegradable plastic molding.

[0062] The mixing assembly 4 includes a rotating shaft 41, which is disposed in the inner cavity of the foam shell 1;

[0063] The rotating shaft 41 is connected to a central bevel gear 42, and the central bevel gear 42 is meshed with a plurality of side bevel gears 43 arranged in a ring array on its side.

[0064] A mixing shaft 44 is connected to one side of the bevel gear 43, and a plurality of mixing blades 45 are connected to the surface of the mixing shaft 44.

[0065] In this technical solution, the mixing component 4 can be used to stir and mix the materials inside the foamed shell 1.

[0066] The top surface of the foamed shell 1 is provided with a rotating hole, and the bottom end of the rotating shaft 41 is rotatably connected to the top surface of the foamed shell 1 through the rotating hole;

[0067] The top end of the rotating shaft 41 is connected to the output end of the drive source 46, and the drive source 46 is connected to the top of the foam shell 1.

[0068] In this technical solution, the drive source 46 can provide driving force for the rotation of the rotating shaft 41.

[0069] A protective shell 47 is provided on the outer side of the central bevel gear 42 and the side bevel gear 43. A plurality of fixing posts 48 are connected to the top of the protective shell 47, and the top of the fixing posts 48 is connected to the inner wall of the top surface of the foam shell 1.

[0070] In this technical solution, the protective housing 47 can protect the center bevel gear 42 and the side bevel gear 43.

[0071] The protective housing 47 has multiple mounting holes on its side. One end of the mixing shaft 44 is rotatably connected to the side of the protective housing 47, and the other end of the mixing shaft 44 is rotatably connected to the inner wall of the foam housing 1.

[0072] In this technical solution, the mixing shaft 44 can be connected to the side of the protective housing 47 through the mounting hole.

[0073] In use, biodegradable plastic material is added into the foam shell 1, then gas is filled into the foam shell 1, and then the drive source 46 drives the rotating shaft 41 to rotate. At this time, the central bevel gear 42 can be rotated, which in turn drives multiple side bevel gears 43 to rotate.

[0074] When the bevel gear 43 rotates, it can drive the mixing shaft 44 to rotate, which in turn drives multiple mixing blades 45 to rotate. The mixing blades 45 are used to mix the material inside the foam shell 1, so as to facilitate the molding of biodegradable plastic inside the foam shell 1.

[0075] The extrusion assembly 5 includes an extrusion cylinder 51, which is connected to the bottom of the foam shell 1 and the bottom surface of the extrusion cylinder 51 is fixedly connected to the top surface of the molding frame shell 2. The outlet end of the extrusion cylinder 51 is connected to the molding assembly 6.

[0076] A conveying auger 52 is provided in the inner cavity of the extrusion cylinder 51, and the top end of the conveying auger 52 is connected to the bottom end of the rotating shaft 41.

[0077] In this technical solution, the material inside the foamed shell 1 can be easily discharged by using the extrusion assembly 5.

[0078] In use, the rotating shaft 41 can drive the conveying auger 52 to rotate, thereby feeding the material inside the foam shell 1 into the upper molding template 61 and the lower molding template 62 for molding operation.

[0079] When the rotating shaft 41 drives the conveying auger 52 to rotate in the opposite direction, the material can be turned up, thereby cooperating with the mixing component 4 to more fully mix the material in the foam shell 1, improving the efficiency and uniformity of biodegradable plastic foaming.

[0080] The molding component 6 includes an upper molding template 61 and a lower molding template 62. The top of the upper molding template 61 is connected to the outlet end of the mixing and extrusion component 5, and the lower molding template 62 is disposed below the upper molding template 61.

[0081] The bottom of the lower forming template 62 is connected to the top of the lifting device 63, and the lifting device 63 is connected to the inner wall of the bottom surface of the forming frame shell 2.

[0082] In this technical solution, the molding component 6 facilitates the foaming and molding of biodegradable plastics.

[0083] The upper forming template 61 is connected to reinforcing plates 64 on both sides, and the lower forming template 62 is connected to fixing shafts 65 on both sides.

[0084] The inner wall of the foamed shell 1 is connected to a plurality of fixed shafts 65. The surface of the fixed shafts 65 is fixedly and through-connected to the reinforcing plate 64, and the surface of the fixed shafts 65 is slidably and through-connected to the anti-deviation plate 66.

[0085] In this technical solution, the movement trajectory of the anti-deviation plate 66 and the lower forming template 62 can be limited by the fixed shaft 65.

[0086] In use, the lifting device 63 drives the lower molding template 62 to move upward, so that the lower molding template 62 is in close contact with the upper molding template 61. At this time, the extrusion assembly 5 discharges the material in the foam shell 1 into the upper molding template 61 and the lower molding template 62. Then, steam is introduced into the molding frame shell 2 to control the temperature, pressure and other parameters in the molding frame shell 2, so that the biodegradable plastic in the upper molding template 61 and the lower molding template 62 can be molded, thus completing the foaming molding of the biodegradable plastic.

[0087] After molding is completed, the lower molding template 62 is moved down by the lifting device 63, which makes it easier to remove the molded biodegradable plastic.

[0088] When the lower forming template 62 moves, it can drive the anti-deviation plate 66 to move along the fixed axis 65. However, the movement of the anti-deviation plate 66 and the lower forming template 62 is more stable.

[0089] Multiple control tube groups are connected to the sides of the molded frame shell 2 and the top surface of the foamed shell 1.

[0090] In this technical solution, gas can be introduced into the foam shell 1 and the molding frame shell 2 using the control tube assembly, thereby controlling the operation inside the foam shell 1 and the molding frame shell 2.

[0091] The bottom of the molded frame 2 is equipped with multiple casters 7.

[0092] In this technical solution, the movable wheels 7 facilitate the movement of the molded frame shell 2 and other structures.

[0093] During use, gas is injected into the foam shell 1 through the control tube assembly, so that the biodegradable plastic inside the foam shell 1 can be foamed.

[0094] During molding, water vapor or other substances can be introduced into the molding frame 2 using the control tube assembly to control parameters such as temperature and pressure inside the molding frame 2, thereby facilitating the molding of biodegradable plastic components 6.

[0095] The drive source 46 is a motor or other device that can output rotational kinetic energy.

[0096] The lifting device 63 is a lifting cylinder, an electric push rod, a hydraulic lifting cylinder, or other equipment with autonomous extension and retraction functions.

[0097] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A biodegradable plastic foam molding apparatus, comprising a foam shell (1) and a molding frame shell (2), wherein the foam shell (1) and the molding frame shell (2) are connected by a plurality of support columns (3), characterized in that, The biodegradable plastic foaming molding device further includes: a mixing component (4), which is disposed in the inner cavity of the foaming shell (1) and is used to foam the biodegradable plastic; The extrusion assembly (5) is disposed below the foam shell (1). The extrusion assembly (5) is connected to the mixing assembly (4) in a transmission manner. The extrusion assembly (5) is used for foaming and extruding biodegradable plastics. Molding component (6) is disposed in the inner cavity of the molding frame (2) and is used for molding biodegradable plastics.

2. The biodegradable plastic foaming molding apparatus as described in claim 1, characterized in that: The mixing assembly (4) includes a rotating shaft (41), which is disposed in the inner cavity of the foam shell (1); The rotating shaft (41) is connected to a central bevel gear (42) on its surface, and the central bevel gear (42) is meshed with a plurality of side bevel gears (43) arranged in a ring array on its side. The side bevel gear (43) is connected to a mixing shaft (44) on one side, and a plurality of mixing blades (45) are connected to the surface of the mixing shaft (44).

3. The biodegradable plastic foaming molding apparatus as described in claim 2, characterized in that: The top surface of the foamed shell (1) is provided with a rotating hole, and the bottom end of the rotating shaft (41) is rotatably connected to the top surface of the foamed shell (1) through the rotating hole; The top end of the rotating shaft (41) is connected to the output end of the drive source (46), which is connected to the top of the foam shell (1).

4. The biodegradable plastic foaming molding apparatus as described in claim 2, characterized in that: The outer sides of the central bevel gear (42) and the side bevel gear (43) are provided with protective shells (47), and the top of the protective shells (47) is connected to multiple fixing posts (48), the top of the fixing posts (48) being connected to the inner wall of the top surface of the foam shell (1).

5. The biodegradable plastic foaming molding apparatus as described in claim 4, characterized in that: The protective shell (47) has multiple mounting holes on its side. One end of the mixing shaft (44) is rotatably connected to the side of the protective shell (47), and the other end of the mixing shaft (44) is rotatably connected to the inner wall of the foam shell (1).

6. The biodegradable plastic foaming molding apparatus as described in claim 1, characterized in that: The extrusion assembly (5) includes an extrusion cylinder (51), which is connected to the bottom of the foam shell (1), and the bottom surface of the extrusion cylinder (51) is fixedly connected to the top surface of the molding frame (2). The outlet end of the extrusion cylinder (51) is connected to the molding assembly (6). A conveying auger (52) is provided in the inner cavity of the extrusion cylinder (51), and the top end of the conveying auger (52) is connected to the bottom end of the rotating shaft (41).

7. The biodegradable plastic foaming molding apparatus as described in claim 1, characterized in that: The molding component (6) includes an upper molding template (61) and a lower molding template (62). The top of the upper molding template (61) is connected to the outlet end of the mixing and extrusion component (5), and the lower molding template (62) is located below the upper molding template (61). The bottom of the lower forming template (62) is connected to the top of the lifting device (63), and the lifting device (63) is connected to the inner wall of the bottom surface of the forming frame (2).

8. The biodegradable plastic foaming molding apparatus as described in claim 7, characterized in that: The upper forming template (61) is connected to reinforcing plates (64) on both sides, and the lower forming template (62) is connected to fixing shafts (65) on both sides. The inner wall of the foamed shell (1) is connected to a plurality of fixed shafts (65). The surface of the fixed shafts (65) is fixedly connected to the reinforcing plate (64) through the wall, and the surface of the fixed shafts (65) is slidably connected to the anti-deviation plate (66).

9. The biodegradable plastic foaming molding apparatus as described in claim 1, characterized in that: Multiple control tube groups are connected to the sides of the molded frame shell (2) and the top surface of the foamed shell shell (1).

10. The biodegradable plastic foaming molding apparatus as described in claim 1, characterized in that: The bottom of the molded frame (2) is equipped with multiple casters (7).

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