CN209832363U - Compression molding machine for melamine tableware - Google Patents
Compression molding machine for melamine tableware Download PDFInfo
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- CN209832363U CN209832363U CN201920571449.1U CN201920571449U CN209832363U CN 209832363 U CN209832363 U CN 209832363U CN 201920571449 U CN201920571449 U CN 201920571449U CN 209832363 U CN209832363 U CN 209832363U
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Abstract
The utility model discloses a compression molding machine for melamine tableware, which relates to the technical field of melamine tableware production, and has the technical scheme that the compression molding machine comprises a frame, a hydraulic cylinder, a lower die carrier, a lower die, an upper die carrier and an upper die fixedly connected to the bottom of the upper die carrier, wherein the lower die is provided with a cooling mechanism, the cooling mechanism comprises an annular cavity arranged on the lower die, a U-shaped plate detachably connected to the annular cavity, a wave water pipe arranged in the annular cavity, a drainage hose communicated with one end of the wave water pipe and a water supply assembly arranged outside the frame and used for supplying cooling water to one end, far away from the drainage hose, of the wave water pipe; the blowing assembly used for enabling air in the inner cavity to flow is arranged outside the rack, one side of the annular cavity is communicated with an exhaust pipe, and one end, far away from the annular cavity, of the exhaust pipe penetrates through one side of the lower die and extends out of the lower die. The utility model provides a lower problem of melamine tableware production efficiency, reached the higher effect of production efficiency who makes the melamine tableware.
Description
Technical Field
The utility model relates to a melamine tableware production technical field, more specifically the saying so, it relates to a compression moulding machine for melamine tableware.
Background
Melamine tableware, also known as porcelain-like tableware, is formed by heating, pressurizing and pressing melamine resin powder. Melamine tableware is widely used in catering industry and children's catering industry because of its advantages of lightness, beauty, low temperature resistance, and non-fragility.
The prior art can refer to Chinese utility model patent with the publication number of CN207616988U, which discloses a melamine tableware forming machine, comprising a machine body, wherein the top of the machine body is provided with a frame, the bottom of the frame is fixedly connected with an upper die frame, an upper die is arranged in the upper die frame, the bottom of the machine body is provided with a hydraulic cylinder, the top of the hydraulic cylinder is fixedly connected with a lower die frame, the top of the lower die frame is provided with a lower die, one side of the bottom of the machine body, which is far away from the hydraulic cylinder, is provided with a cylinder, the top of the cylinder is fixedly connected with a servo motor, one side of the top of the servo motor is fixedly connected with a telescopic supporting rod, one end of the telescopic supporting rod, which is far away from the servo motor, is fixedly connected with a telescopic supporting, tracheal one end fixedly connected with sucking disc, the trachea is kept away from the one end fixedly connected with vacuum pump of sucking disc, one side fixedly connected with of frame connects the silo, be provided with the rubber pad on the bottom inner wall that connects the silo, flexible bracing piece and flexible support column constitute by sleeve pipe and loop bar, the through-hole has all been seted up to the sheathed tube both sides, through-hole female connection has fastening bolt.
However, the cooling mechanism is not provided on the lower mold, and the molded melamine tableware can be cooled only by natural cooling, so that the production efficiency of the melamine tableware is low.
SUMMERY OF THE UTILITY MODEL
The object of the present invention is to provide a compression molding machine for melamine tableware, which can accelerate the cooling speed of the formed melamine tableware by setting a cooling mechanism, thereby accelerating the production efficiency of the melamine tableware.
In order to achieve the above purpose, the utility model provides a following technical scheme: a compression molding machine for melamine tableware comprises a rack, a hydraulic cylinder vertically arranged at the bottom of the rack, a lower die frame arranged on a piston rod of the hydraulic cylinder, a lower die fixedly connected to the top of the lower die frame, an upper die frame arranged right above the lower die frame and an upper die fixedly connected to the bottom of the upper die frame, wherein a cooling mechanism is arranged on the lower die and comprises an annular cavity arranged on the lower die, a U-shaped plate detachably connected to the annular cavity, a wavy water pipe arranged in the annular cavity, a drainage hose communicated with one end of the wavy water pipe and a water supply assembly arranged outside the rack and used for supplying cooling water to one end, far away from the drainage hose, of the wavy water pipe; the blowing assembly used for enabling air in the inner cavity to flow is arranged outside the rack, one side of the annular cavity is communicated with an exhaust pipe, and one end, far away from the annular cavity, of the exhaust pipe penetrates through one side of the lower die and extends out of the lower die.
By adopting the technical scheme, the heated melamine resin powder is placed on the lower die, then the lower die frame is driven to move upwards by the piston rod of the hydraulic cylinder, the lower die frame moves upwards to drive the lower die to move upwards, so that the upper die and the lower die are matched, and the required tableware can be pressed after the upper die and the lower die are matched; then, the air is blown into the annular cavity through the air blowing assembly, so that the air in the annular cavity can rapidly circulate, the cooling speed of the melamine tableware can be increased, and the production efficiency of the melamine tableware can be improved.
The utility model discloses further set up to: the water supply assembly comprises a cooling water tank arranged outside the rack, a cooling water pump arranged outside the rack and a water inlet hose communicated with a water outlet of the cooling water pump through a pipeline; a water inlet of the cooling water pump is communicated with the cooling water tank through a pipeline; and one end of the water inlet hose, which is far away from the cooling water pump, is communicated with one end of the wavy water pipe, which is far away from the drainage hose.
By adopting the technical scheme, when the water needs to be supplied to the wavy water pipe, the cooling water pump is started, and the cooling water pump pumps the cooling water in the cooling water tank into the wavy water pipe; by providing the water supply unit, the cooling water can be rapidly moved, thereby accelerating the cooling speed of the melamine tableware.
The utility model discloses further set up to: a plate-type heat exchanger is arranged outside the rack, and an ice water inlet pipe, an ice water outlet pipe and a cooling water pipe are communicated with the plate-type heat exchanger; one end of the cooling water pipe, which is far away from the plate-type heat exchanger, is communicated with the cooling water tank; and one end of the drainage hose, which is far away from the lower die, is communicated with the plate heat exchanger through a pipeline.
By adopting the technical scheme, the temperature of the cooling water can be relatively low through the plate-type heat exchanger, so that the cooling speed of the melamine tableware can be further increased.
The utility model discloses further set up to: the blowing assembly comprises a fan arranged outside the rack and a blowing hose communicated with a blowing port of the fan; and one end of the blowing hose, which is far away from the fan, is communicated with the annular cavity.
By adopting the technical scheme, when the air flow in the annular cavity needs to flow rapidly, the fan is started, and then the air in the annular cavity flows rapidly through the blowing hose; through setting up the subassembly of blowing, be convenient for make the air in the annular chamber flow fast, therefore can accelerate the heat in the annular chamber and scatter and disappear the speed.
The utility model discloses further set up to: the lower die frame is provided with a plurality of groups of ejection assemblies for ejecting melamine tableware, and each group of ejection assemblies comprises an air cylinder vertically arranged at the bottom of the lower die frame and an ejection column connected to the lower die in a sliding manner along the vertical direction; a piston rod of the air cylinder vertically and upwards sequentially penetrates through the lower die frame and the lower die and is fixedly connected with the bottom of the top column; and a vertical sliding groove for sliding of the top column is formed in the lower die.
By adopting the technical scheme, when the molded melamine tableware needs to be ejected, the air cylinder is started, the piston rod of the air cylinder drives the ejection column to move upwards, the ejection column moves upwards to eject the melamine tableware, and the ejection assembly is arranged to facilitate ejection of the molded melamine tableware.
The utility model discloses further set up to: each top column is provided with an annular groove, and the annular groove is sleeved with a sealing ring.
Through adopting above-mentioned technical scheme, through setting up the sealing washer, can reduce the possibility that the melamine resin powder after the heating takes place to leak.
The utility model discloses further set up to: the frame is vertically provided with a plurality of vertical guide pillars for guiding the lower die frame, the vertical guide pillars all penetrate through the lower die frame, and the lower die frame is connected to the vertical guide pillars in a sliding mode along the vertical direction.
Through adopting above-mentioned technical scheme, erect the guide pillar and have the guide effect to the lower die holder to can reduce the lower die holder and take place the possibility of skew along vertical slip in-process.
The utility model discloses further set up to: each vertical guide pillar is provided with a buffer assembly used for buffering the lower die frame, and the buffer assembly comprises a buffer block sleeved on the vertical guide pillar and a buffer spring sleeved on the vertical guide pillar; the buffer block is connected to the vertical guide pillar in a sliding manner along the vertical direction; and two ends of the buffer spring are fixedly connected to the upper die frame and the buffer block respectively.
Through adopting above-mentioned technical scheme, through setting up buffer block and buffer spring, can cushion the lower die carrier to can alleviate the rigidity contact of lower mould and last mould, therefore can prolong the life of last mould and lower mould.
To sum up, the utility model discloses compare and have following beneficial effect in prior art:
1. the heated melamine resin powder is placed on a lower die, then a piston rod of a hydraulic cylinder drives a lower die frame to move upwards, the lower die frame moves upwards to drive the lower die to move upwards, so that the upper die and the lower die are matched, and the required tableware can be pressed after the upper die and the lower die are matched; then, air is blown into the annular cavity through the air blowing assembly, so that the air in the annular cavity is quickly circulated, the cooling speed of the melamine tableware can be increased, and the production efficiency of the melamine tableware can be improved;
2. when the water needs to be supplied to the wavy water pipe, a cooling water pump is started, and the cooling water pump pumps cooling water in a cooling water tank into the wavy water pipe; by arranging the water supply assembly, the cooling water can move quickly, so that the cooling speed of the melamine tableware can be increased;
3. when the air flow in the annular cavity needs to flow rapidly, starting the fan, and then rapidly flowing the air in the annular cavity through the blowing hose; through setting up the subassembly of blowing, be convenient for make the air in the annular chamber flow fast, therefore can accelerate the heat in the annular chamber and scatter and disappear the speed.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a schematic view showing a structure of a protruded annular groove in the embodiment;
FIG. 3 is a schematic view showing the structure of the water supply assembly and the plate heat exchanger in the embodiment;
FIG. 4 is a schematic view of the embodiment illustrating the structure of the ejection assembly;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a schematic structural diagram of a salient buffer component in the embodiment.
In the figure: 1. a frame; 11. a hydraulic cylinder; 12. a lower die frame; 13. a lower die; 14. feeding a mold frame; 15. an upper die; 2. a cooling mechanism; 21. an annular cavity; 22. a U-shaped plate; 23. a wave-shaped water pipe; 24. a drain hose; 25. an exhaust pipe; 3. a water supply assembly; 31. a cooling water tank; 32. a cooling water pump; 33. a water inlet hose; 4. a plate heat exchanger; 41. an ice water inlet pipe; 42. an ice water outlet pipe; 43. a cooling water pipe; 5. a blowing assembly; 51. a fan; 52. a blowing hose; 6. ejecting the assembly; 61. a cylinder; 62. a top pillar; 63. a vertical chute; 64. an annular groove; 65. a seal ring; 7. a vertical guide post; 8. a buffer assembly; 81. a buffer block; 82. a buffer spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example (b): a compression molding machine for melamine tableware comprises a frame 1, a hydraulic cylinder 11 vertically arranged at the bottom of the frame 1, a lower die frame 12 arranged on a piston rod of the hydraulic cylinder 11, a lower die 13 fixedly connected to the top of the lower die frame 12, an upper die frame 14 arranged right above the lower die frame 12 and an upper die 15 fixedly connected to the bottom of the upper die frame 14, wherein a cooling mechanism 2 is arranged on the lower die 13, as shown in figure 1.
As shown in fig. 1 and 2, the cooling mechanism 2 includes an annular cavity 21 opened on the lower mold 13, a U-shaped plate 22 detachably connected to the outer side wall of the annular cavity 21 by bolts, a wave-shaped water pipe 23 installed in the annular cavity 21, a water discharge hose 24 communicated with one end of the wave-shaped water pipe 23 by an air joint, and a water supply assembly 3 installed outside the rack 1 for supplying cooling water to one end of the wave-shaped water pipe 23 away from the water discharge hose 24; the frame 1 is externally provided with a blowing assembly 5 for making the air in the cavity flow, one side of the annular cavity 21 is communicated with an exhaust pipe 25, and one end of the exhaust pipe 25, which is far away from the annular cavity 21, penetrates through one side of the lower die 13 and extends out of the lower die 13. The heated melamine resin powder is placed on a lower die 13, then a piston rod of a hydraulic cylinder 11 drives a lower die frame 12 to move upwards, the lower die frame 12 moves upwards to drive the lower die 13 to move upwards, so that an upper die 15 and the lower die 13 are matched, and the required tableware can be pressed after the upper die 15 and the lower die 13 are matched; then, the air is blown into the annular cavity 21 through the blowing assembly 5, so that the air inside the annular cavity 21 is rapidly circulated, the cooling speed of the melamine tableware can be increased, and the production efficiency of the melamine tableware can be improved.
As shown in fig. 2 and 3, the water supply assembly 3 includes a cooling water tank 31 installed outside the rack 1 (see fig. 1), a cooling water pump 32 installed outside the rack 1, and a water inlet hose 33 communicated with a water outlet of the cooling water pump 32 through a pipe; a water inlet of the cooling water pump 32 is communicated with the cooling water tank 31 through a pipeline; the end of the water inlet hose 33 far away from the cooling water pump 32 is communicated with the end of the wavy water pipe 23 far away from the water discharge hose 24 through an air connector, and the U-shaped plate 22 is convenient to detach and the hose is convenient to install through the air connector. When water needs to be supplied to the wavy water pipe 23, the cooling water pump 32 is started, and the cooling water pump 32 pumps the cooling water in the cooling water tank 31 into the wavy water pipe 23; by providing the water supply unit 3, the cooling water can be moved quickly, and thus the cooling speed of the melamine tableware can be increased.
As shown in fig. 1 and 3, a plate heat exchanger 4 is installed outside the frame 1, and the plate heat exchanger 4 is communicated with an ice water inlet pipe 41, an ice water outlet pipe 42 and a cooling water pipe 43; one end of the cooling water pipe 43 far away from the plate heat exchanger 4 is communicated with the cooling water tank 31; the ice water in the ice water inlet pipe 41 can be prepared by liquid nitrogen or liquid ammonia; the end of the drain hose 24 remote from the lower die 13 communicates with the plate heat exchanger 4 through a pipe. The plate heat exchanger 4 can lower the temperature of the cooling water, and thus can further increase the cooling rate of the melamine tableware.
As shown in fig. 1 and 2, the air blowing assembly 5 includes a blower 51 mounted outside the frame 1 and a blowing hose 52 communicated with a blowing port of the blower 51; one end of the blowing hose 52, which is far away from the blower 51, is communicated with the annular cavity 21 through an air joint, and the blowing hose 52 can be limited preliminarily through a pipeline, so that the blowing hose 52 is prevented from shaking back and forth. When the airflow in the annular cavity 21 needs to flow rapidly, the blower 51 is started, and then the air in the annular cavity 21 flows rapidly through the blowing hose 52; the air blowing assembly 5 is arranged to facilitate the rapid flow of air in the annular cavity 21, so that the heat dissipation speed in the annular cavity 21 can be increased.
As shown in fig. 4 and 5, a plurality of groups of ejection assemblies 6 for ejecting melamine tableware are mounted on the lower mold frame 12, each group of ejection assemblies 6 comprises an air cylinder 61 vertically mounted at the bottom of the lower mold frame 12 and an ejection column 62 connected to the lower mold 13 in a sliding manner in the vertical direction; a piston rod of the cylinder 61 vertically and upwards sequentially penetrates through the lower die frame 12 and the lower die 13 and is fixedly connected with the bottom of the top column 62; a vertical sliding groove 63 for the top column 62 to slide is formed in the lower die 13; each top column 62 is provided with an annular groove 64, the annular groove 64 is sleeved with a sealing ring 65, and the sealing ring 65 is arranged to reduce the possibility of leakage of melamine resin powder. When the molded melamine tableware needs to be ejected, the air cylinder 61 is started, the piston rod of the air cylinder 61 drives the ejection column 62 to move upwards, the ejection column 62 moves upwards to eject the melamine tableware, and the ejection assembly 6 is arranged to facilitate ejection of the molded melamine tableware.
As shown in fig. 6, a plurality of vertical guide pillars 7 for guiding a lower mold frame 12 are vertically arranged on a frame 1 (see fig. 1), the plurality of vertical guide pillars 7 all penetrate through the lower mold frame 12, and the lower mold frame 12 is connected to the plurality of vertical guide pillars 7 in a sliding manner in the vertical direction. The vertical guide post 7 has a guiding function on the lower die frame 12, so that the possibility of deviation of the lower die frame 12 in the vertical sliding process can be reduced.
As shown in fig. 6, each vertical guide post 7 is provided with a buffer assembly 8 for buffering the lower mold frame 12, and the buffer assembly 8 comprises a buffer block 81 sleeved on the vertical guide post 7 and a buffer spring 82 sleeved on the vertical guide post 7; the buffer block 81 is connected to the vertical guide post 7 in a sliding manner along the vertical direction; both ends of the buffer spring 82 are respectively fixed to the upper mold frame 14 and the buffer block 81. By providing the buffer blocks 81 and the buffer springs 82, the lower die holder 12 can be buffered, and the lower die 13 and the upper die 15 can be reduced in rigid contact, so that the service lives of the upper die 15 and the lower die 13 can be prolonged.
The working principle of the compression molding machine for melamine tableware is as follows:
the heated melamine resin powder is placed on a lower die 13, then a piston rod of a hydraulic cylinder 11 drives a lower die frame 12 to move upwards, the lower die frame 12 moves upwards to drive the lower die 13 to move upwards, so that an upper die 15 and the lower die 13 are matched, and the required tableware can be pressed after the upper die 15 and the lower die 13 are matched; then, the cooling water pump 32 is started, and the cooling water pump 32 pumps the cooling water in the cooling water tank 31 into the wavy water pipe 23; the fan 51 is then started and the air in the annular chamber 21 is rapidly flowed through the blowing hose 52, so that the cooling rate of the melamine tableware can be increased, and thus the production efficiency of the melamine tableware can be improved.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a compression moulding machine for melamine tableware, includes frame (1), vertical pneumatic cylinder (11) of installing in frame (1) bottom, install in lower die carrier (12) of pneumatic cylinder (11) piston rod, lower mould (13) at rigid coupling in lower die carrier (12) top, install in last die carrier (14) and rigid coupling directly over lower die carrier (12) in last die carrier (14) last mould (15) of bottom, its characterized in that: the cooling mechanism (2) is arranged on the lower die (13), and the cooling mechanism (2) comprises an annular cavity (21) arranged on the lower die (13), a U-shaped plate (22) detachably connected to the annular cavity (21), a wave-shaped water pipe (23) arranged in the annular cavity (21), a drainage hose (24) communicated with one end of the wave-shaped water pipe (23), and a water supply assembly (3) arranged outside the rack (1) and used for supplying cooling water to one end, far away from the drainage hose (24), of the wave-shaped water pipe (23); the blowing device is characterized in that a blowing assembly (5) used for enabling air in the inner cavity to flow is arranged outside the frame (1), an exhaust pipe (25) is communicated with one side of the annular cavity (21), and one end, far away from the annular cavity (21), of the exhaust pipe (25) penetrates through one side of the lower die (13) and extends out of the lower die (13).
2. A compression molding machine for melamine tableware according to claim 1 wherein: the water supply assembly (3) comprises a cooling water tank (31) arranged outside the rack (1), a cooling water pump (32) arranged outside the rack (1) and a water inlet hose (33) communicated with a water outlet of the cooling water pump (32) through a pipeline; a water inlet of the cooling water pump (32) is communicated with the cooling water tank (31) through a pipeline; one end of the water inlet hose (33) far away from the cooling water pump (32) is communicated with one end of the wavy water pipe (23) far away from the water discharge hose (24).
3. A compression molding machine for melamine tableware according to claim 2 wherein: a plate-type heat exchanger (4) is arranged outside the rack (1), and an ice water inlet pipe (41), an ice water outlet pipe (42) and a cooling water pipe (43) are communicated with the plate-type heat exchanger (4); one end of the cooling water pipe (43) far away from the plate heat exchanger (4) is communicated with the cooling water tank (31); and one end of the drainage hose (24) far away from the lower die (13) is communicated with the plate heat exchanger (4) through a pipeline.
4. A compression molding machine for melamine tableware according to claim 1 wherein: the blowing assembly (5) comprises a fan (51) arranged outside the rack (1) and a blowing hose (52) communicated with a blowing port of the fan (51); one end of the blowing hose (52) far away from the fan (51) is communicated with the annular cavity (21).
5. A compression molding machine for melamine tableware according to claim 1 wherein: a plurality of groups of ejection assemblies (6) for ejecting melamine tableware are arranged on the lower die frame (12), and each group of ejection assemblies (6) comprises an air cylinder (61) vertically arranged at the bottom of the lower die frame (12) and an ejection column (62) connected to the lower die (13) in a sliding manner along the vertical direction; a piston rod of the air cylinder (61) vertically and upwards sequentially penetrates through the lower die frame (12) and the lower die (13) and is fixedly connected with the bottom of the top column (62); and a vertical sliding groove (63) for sliding the top column (62) is formed in the lower die (13).
6. The compression molding machine for melamine tableware according to claim 5, wherein: each top column (62) is provided with an annular groove (64), and the annular groove (64) is sleeved with a sealing ring (65).
7. A compression molding machine for melamine tableware according to claim 1 wherein: the guide device is characterized in that a plurality of vertical guide pillars (7) used for guiding a lower die frame (12) are vertically arranged on the rack (1), the vertical guide pillars (7) penetrate through the lower die frame (12), and the lower die frame (12) is connected to the vertical guide pillars (7) in a sliding mode along the vertical direction.
8. The compression molding machine for melamine tableware according to claim 7, wherein: each vertical guide post (7) is provided with a buffer component (8) for buffering a lower die frame (12), and each buffer component (8) comprises a buffer block (81) sleeved on the vertical guide post (7) and a buffer spring (82) sleeved on the vertical guide post (7); the buffer block (81) is connected to the vertical guide pillar (7) in a sliding manner along the vertical direction; two ends of the buffer spring (82) are respectively and fixedly connected with the upper die carrier (14) and the buffer block (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920571449.1U CN209832363U (en) | 2019-04-24 | 2019-04-24 | Compression molding machine for melamine tableware |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920571449.1U CN209832363U (en) | 2019-04-24 | 2019-04-24 | Compression molding machine for melamine tableware |
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| Publication Number | Publication Date |
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| CN209832363U true CN209832363U (en) | 2019-12-24 |
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| CN201920571449.1U Active CN209832363U (en) | 2019-04-24 | 2019-04-24 | Compression molding machine for melamine tableware |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231810A (en) * | 2022-09-21 | 2022-10-25 | 江苏立晶工业科技有限公司 | Forming device for high-boron glass tableware |
| CN115678114A (en) * | 2022-11-07 | 2023-02-03 | 安徽恒鑫环保新材料有限公司 | Degradable foamed tableware and preparation method thereof |
-
2019
- 2019-04-24 CN CN201920571449.1U patent/CN209832363U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115231810A (en) * | 2022-09-21 | 2022-10-25 | 江苏立晶工业科技有限公司 | Forming device for high-boron glass tableware |
| CN115678114A (en) * | 2022-11-07 | 2023-02-03 | 安徽恒鑫环保新材料有限公司 | Degradable foamed tableware and preparation method thereof |
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