CN108162238B - Wood-plastic guardrail machining device - Google Patents
Wood-plastic guardrail machining device Download PDFInfo
- Publication number
- CN108162238B CN108162238B CN201711417774.4A CN201711417774A CN108162238B CN 108162238 B CN108162238 B CN 108162238B CN 201711417774 A CN201711417774 A CN 201711417774A CN 108162238 B CN108162238 B CN 108162238B
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- Prior art keywords
- glue
- pushing cavity
- cavity
- glue melting
- stirring barrel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/022—Melting the material to be shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
Abstract
The invention belongs to the technical field of guardrail processing, and particularly discloses a wood plastic guardrail processing device which comprises a glue melting device with a feed inlet and a stirring barrel, wherein the glue melting device comprises a recovery cavity and a glue melting pushing cavity, a heating plate is embedded in the side wall of the glue melting pushing cavity, at least two screws which are rotatably connected with the glue melting pushing cavity and used for pushing materials to advance are arranged in the glue melting pushing cavity, a motor for driving the screws to rotate is arranged at the front end of the glue melting pushing cavity, a plurality of glue outlet holes are formed in the bottom of the glue melting pushing cavity, and a glue melting collecting cavity communicated with the stirring barrel is arranged at the lower part of the glue outlet holes; a rigid communicating shaft is arranged between the screws, the screw at the tail end of the melt adhesive pushing cavity is provided with a stirring mechanism, the rigid communicating shaft is provided with a plurality of stirring blades, and the tail end of the melt adhesive pushing cavity is provided with an extrusion device; the stirring barrel is provided with a molten glue outlet near the side wall of the top of the stirring barrel. The invention aims to provide a wood-plastic guardrail processing device which is not easy to lead a screw to be eccentric, and the manufactured guardrail product is almost bubble-free and has good performance and appearance.
Description
Technical Field
The invention belongs to the technical field of guardrail processing, and particularly discloses a wood-plastic guardrail processing device.
Background
The wood-plastic guardrail is a new composite material which is briskly developed in recent years at home and abroad, and is a plate or a section which is produced by using polyethylene, polypropylene, polyvinyl chloride and the like to replace a common resin adhesive, mixing the polyethylene, polypropylene, polyvinyl chloride and more than 35-70% of waste plant fibers such as wood flour, rice husks, straws and the like into a new wood material, and then carrying out plastic processing technologies such as extrusion, mould pressing, injection molding and the like.
In the processing process of the wood-plastic guardrail, as the recycled old plastic is not partially filtered, other impurities are difficult to be doped, when plant fibers such as wood powder and the like are added, the infiltration amount of the plant fibers is large, the resistance of the mixed raw materials to the rotation of the screw is large, the eccentric phenomenon is easy to occur, the screw and the charging barrel are rubbed, the charging barrel is damaged, and the screw is influenced to push the material to advance; in addition, in unloading and heating process, the air can get into the wood-plastic raw materials along with the unloading, and the present most wood-plastic guardrail processingequipment does not have exhaust function, and the product of beating out has the air pocket very easily, influences the performance and the outward appearance of wood-plastic guardrail greatly.
Disclosure of Invention
The invention aims to provide a wood-plastic guardrail processing device, which aims to solve the problems that a screw rod is eccentric and a product has air pockets easily caused in the glue melting process of a wood-plastic guardrail.
In order to achieve the purpose, the basic scheme of the invention is as follows: a wood plastic guardrail processing device comprises a glue melting device and a stirring barrel, wherein the glue melting device is provided with a feed inlet, the glue melting device comprises an upper recovery cavity and a lower glue melting pushing cavity, the glue melting pushing cavity is communicated with two ends of the recovery cavity, a heating plate is embedded in the side wall of the glue melting pushing cavity, at least two screws which are rotatably connected with the glue melting pushing cavity and used for pushing materials to advance are arranged in the glue melting pushing cavity, a motor for driving the screws to rotate is arranged at the front end of the glue melting pushing cavity, a plurality of glue outlet holes are formed in the bottom of the glue melting pushing cavity, and a glue melting collecting cavity communicated with the stirring barrel is arranged at the lower part of the glue outlet holes; a rigid communicating shaft is arranged between the screws, the screw at the tail end of the melt adhesive pushing cavity is provided with a stirring mechanism extending into the stirring barrel, the rigid communicating shaft is provided with a plurality of stirring blades, and the tail end of the melt adhesive pushing cavity is provided with an extrusion device; and a molten gel outlet is formed in the position, close to the side wall of the top of the stirring barrel.
The working principle of the basic scheme is as follows: firstly, wood flour and old plastics in a certain proportion are fed from a feed inlet of a glue melting device, at least two screws which are rotatably connected with a glue melting pushing cavity and used for pushing a material to advance are arranged in the glue melting pushing cavity, and a rigid communicating shaft is arranged between the screws, so that the screw connected with a motor is driven by the motor to rotate, the screw drives the rigid communicating shaft connected with the screw to rotate, the rigid communicating shaft drives the next screw to rotate, and finally, a plurality of screws synchronously rotate to push and convey the material; because the heating plate is embedded in the side wall of the glue melting pushing cavity, the old plastic is pushed by the screw to move forward and is melted under the action of the heating plate, and the melted plastic is mixed with the wood powder to form glue melting; because the bottom of the molten glue pushing cavity is provided with a plurality of glue outlet holes, most of molten glue enters the molten glue collecting cavity through the glue outlet holes and finally enters the stirring barrel, and the molten glue, the unmelted old plastic and wood powder which enter the molten glue collecting cavity without the glue outlet holes are pushed to the tail end of the molten glue pushing cavity by the screw; because the tail end of the molten rubber pushing cavity is provided with the extruding device, the extruding device can intercept the mixed material at the tail end of the molten rubber pushing cavity to enter the recovery cavity, and ensure that as much molten rubber as possible enters the molten rubber collecting cavity and the stirring barrel through the rubber outlet; because the melt adhesive device comprises the recovery cavity at the upper part and the melt adhesive pushing cavity at the lower part, and the melt adhesive pushing cavity is communicated with the two ends of the recovery cavity, the mixed material can enter the recovery cavity at the upper part of the melt adhesive pushing cavity along with the increasing amount of the mixed material pushed to the tail end of the melt adhesive pushing cavity and finally enter the melt adhesive pushing cavity from the melt adhesive pushing cavity again; because the rigid communicating shaft is arranged between the screws and provided with the plurality of stirring blades, the rigid communicating shaft can stir the mixed material in the melt adhesive pushing cavity in the rotating process of the motor, so that the wood powder and the plastic are mixed more uniformly; the screw rod at the tail end of the molten rubber pushing cavity is provided with a stirring mechanism extending into the stirring barrel, and the stirring mechanism can stir the molten rubber in the stirring barrel along with the rotation of the screw rod to play a role in degassing the molten rubber; and finally, the molten rubber entering the stirring barrel flows out from a molten rubber outlet after reaching a certain height, and is extruded, molded and injection molded.
The beneficial effect of this basic scheme lies in: 1) the screw rod is rotatably connected with the melt adhesive pushing cavity, the melt adhesive pushing cavity plays a role in supporting the screw rod, the rotation resistance of the screw rod can be effectively relieved, the screw rods are connected through the rigid communication shaft, the possibility that the screw rod is eccentric and the screw rod is rubbed with the inner side wall of the melt adhesive pushing cavity can be greatly reduced under the condition that the working length of the screw rod is ensured, and the screw rod is simpler to process; the recovery cavity and the melt glue pushing cavity are communicated with each other from top to bottom, the melt glue enters the melt glue collecting cavity and the stirring barrel through the glue outlet hole, and the unmelted plastic enters the melt glue pushing cavity again to be remelted, so that the unmelted plastic is completely prevented from entering the next process, the quality of the wood-plastic guardrail is ensured, and the complete ratio of the wood powder to the old plastic is ensured; the rigid communicating shaft is provided with a plurality of stirring blades, so that the wood powder and the plastic can be mixed more uniformly; the screw rod at the tail end of the melt adhesive pushing cavity is provided with a stirring mechanism extending into the stirring barrel, so that the melt adhesive is degassed, and the performance and the appearance of the wood-plastic guardrail can be effectively guaranteed; the molten glue entering the next procedure is the molten glue close to the top of the stirring barrel in the stirring barrel, so that the molten glue is fully degassed before entering the next procedure; the device adopts a power mechanism, and finishes the whole processes of melt adhesive pushing, stirring and degassing for processing the wood-plastic guardrail.
Further, the elastic extrusion plate of tail end fixedly connected with slope of melten gel propelling movement chamber, on the one hand the stripper plate has elasticity, extrudees the miscella by propelling movement to melten gel propelling movement chamber tail end, guarantees as much as possible in the melten gel gets into melten gel collection chamber and agitator through going out gluey hole, and on the other hand, the slope of elastic extrusion plate helps getting into through the inclined plane and retrieves the intracavity by the miscella of propelling movement to melten gel propelling movement chamber tail end.
Further, the extrusion device is an elastic extrusion block fixedly connected to the middle of the tail end of the molten rubber pushing cavity and provided with a hole, the mixed material pushed to the tail end of the molten rubber pushing cavity is extruded, and it is guaranteed that as much molten rubber as possible enters the molten rubber collecting cavity and the stirring barrel through the rubber outlet hole.
Furthermore, the bottom of the molten rubber collecting cavity inclines towards the stirring barrel, so that the molten rubber flowing out from the rubber outlet hole can quickly enter the stirring barrel.
Further, an ultrasonic generator and an ultrasonic transducer are arranged at the bottom of the stirring barrel. The ultrasonic generator generates high-frequency voltage and transmits the high-frequency voltage to the ultrasonic transducer, and the ultrasonic transducer generates high-frequency resonance to further degas the molten glue in the stirring barrel.
Furthermore, the stirring mechanism comprises two rigid communicating shafts, a corner flexible shaft is connected between the two rigid communicating shafts, a plurality of stirring blades are arranged on the rigid communicating shafts extending into the stirring barrel, the connecting direction of the rigid communicating shafts is changed by the corner flexible shaft, and the rigid communicating shafts extending into the stirring barrel and the screw rod are ensured to synchronously rotate.
Drawings
Fig. 1 is a schematic cross-sectional view of an embodiment of a wood-plastic guardrail processing device.
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a feeding port 1, a stirring barrel 2, a recovery cavity 3, a molten glue pushing cavity 4, a heating plate 5, a screw rod 6, a motor 7, a glue outlet hole 8, a molten glue collecting cavity 9, a rigid communicating shaft 10, a stirring blade 11, a molten glue outlet 12, an elastic extrusion plate 13, an elastic extrusion block 14, an ultrasonic generator 15, an ultrasonic transducer 16 and a corner flexible shaft 17.
As shown in fig. 1, a wood plastic guardrail processing device comprises a glue melting device provided with a feed port 1 and a stirring barrel 2, wherein the glue melting device comprises an upper recovery cavity 3 and a lower glue melting pushing cavity 4, the glue melting pushing cavity 4 is communicated with two ends of the recovery cavity 3, a heating plate 5 is embedded in the side wall of the glue melting pushing cavity 4, at least two screw rods 6 which are rotatably connected with the glue melting pushing cavity and used for pushing a material to advance are arranged in the glue melting pushing cavity 4, and the number of the screw rods 6 which are preferred in the embodiment is two; a motor 7 for driving a screw 6 to rotate is arranged at the front end of the molten rubber pushing cavity 4, a plurality of rubber outlet holes 8 are formed in the bottom of the molten rubber pushing cavity 4, and a molten rubber collecting cavity 9 communicated with the stirring barrel 2 is arranged at the lower parts of the rubber outlet holes 8; a rigid communicating shaft 10 is arranged between the screw rods 6, and the screw rod 6 at the tail end of the molten gel pushing cavity 4 is provided with a stirring mechanism extending into the stirring barrel 2.
The stirring mechanism comprises two rigid communicating shafts 10, a corner flexible shaft 17 is connected between the two rigid communicating shafts 10, a plurality of stirring blades 11 are arranged on the rigid communicating shafts 10 extending into the stirring barrel 2, the connecting direction of the rigid communicating shafts 10 is changed by the corner flexible shaft 17, and the rigid communicating shafts 10 extending into the stirring barrel 2 and the screw 6 are ensured to synchronously rotate. The rigid communicating shaft 10 is provided with a plurality of stirring blades 11, the tail end of the molten rubber pushing cavity 4 is provided with an extruding device, the extruding device is an elastic extruding block 14 fixedly connected with a hole formed in the middle of the tail end of the molten rubber pushing cavity 4 and is used for extruding a mixed material pushed to the tail end of the molten rubber pushing cavity 4, the molten rubber enters the molten rubber collecting cavity 9 and the stirring barrel 2 through the rubber outlet hole 8 as much as possible, and in order to enable the molten rubber flowing out through the rubber outlet hole 8 to quickly enter the stirring barrel 2, the bottom of the molten rubber collecting cavity 9 inclines towards the stirring barrel 2; the stirring barrel 2 is provided with a molten glue outlet 12 near the top side wall.
The bottom of the stirring barrel 2 is provided with an ultrasonic generator 15 and an ultrasonic transducer 16. The ultrasonic generator 15 generates high-frequency voltage, and transmits the high-frequency voltage to the ultrasonic transducer 16, and the ultrasonic transducer 16 generates high-frequency resonance to further degas the molten adhesive in the stirring barrel 2.
When the wood-plastic guardrail is processed, firstly, wood flour and old plastic with a certain proportion are fed from a feeding hole 1 of a glue melting device, a motor 7 is opened, a screw 6 connected with the motor 7 is driven by the motor 7 to rotate, the screw 6 drives a rigid communicating shaft 10 connected with the screw to rotate, the rigid communicating shaft 10 drives the next screw 6 to rotate, and finally, the two screws 6 synchronously rotate to push and convey materials to advance; old plastic is pushed by the screw 6 to move forward, and simultaneously is melted under the action of the heating plate 5, and the melted plastic is mixed with the wood powder to form melt adhesive; because the bottom of the molten glue pushing cavity 4 is provided with the glue outlet holes 8, most of the molten glue enters the molten glue collecting cavity 9 through the glue outlet holes 8 and finally enters the stirring barrel 2, and the molten glue, the unmelted old plastic and the wood powder which do not enter the molten glue collecting cavity 9 through the glue outlet holes 8 are pushed to the tail end of the molten glue pushing cavity 4 by the screw 6; because the tail end of the molten gel pushing cavity 4 is provided with the elastic extrusion plate 13 and the elastic extrusion block 14, the elastic extrusion plate 13 and the elastic extrusion block 14 can intercept mixed materials at the tail end of the molten gel pushing cavity 4 to enter the recovery cavity 3, and ensure that as much molten gel as possible enters the molten gel collecting cavity 9 and the stirring barrel 2 through the gel outlet hole 8; along with the increase of the mixture materials pushed to the tail end of the molten rubber pushing cavity 4, the mixture materials can enter the recovery cavity 3 at the upper part of the molten rubber pushing cavity 4 along the inclined surface of the elastic extrusion plate 13 and finally enter the molten rubber pushing cavity 4 from the front end of the molten rubber pushing cavity 4 again; meanwhile, the rigid communication shaft 10 can stir the mixed materials in the melt adhesive pushing cavity 4 in the rotating process of the motor 7, so that the wood powder and the plastic are mixed more uniformly; the screw 6 at the tail end of the molten rubber pushing cavity 4 is provided with a stirring mechanism extending into the stirring barrel 2, and the rigid connecting shaft 10 extending into the stirring barrel 2 can stir the molten rubber in the stirring barrel 2 along with the rotation of the screw 6, so that the degassing effect on the molten rubber is achieved; and finally, the molten adhesive entering the stirring barrel 2 flows out from the molten adhesive outlet 12 after reaching a certain height, and is extruded, molded and injection molded.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (6)
1. The wood plastic guardrail processing device is characterized by comprising a glue melting device and a stirring barrel, wherein the glue melting device is provided with a feed inlet, the glue melting device comprises an upper recovery cavity and a lower glue melting pushing cavity, the glue melting pushing cavity is communicated with two ends of the recovery cavity, a heating plate is embedded in the side wall of the glue melting pushing cavity, at least two screws which are rotatably connected with the glue melting pushing cavity and used for pushing materials to advance are arranged in the glue melting pushing cavity, a motor for driving the screws to rotate is arranged at the front end of the glue melting pushing cavity, a plurality of glue outlet holes are formed in the bottom of the glue melting pushing cavity, and a glue melting collecting cavity communicated with the stirring barrel is arranged at the lower part of the glue outlet holes; a rigid communicating shaft is arranged between the screws, the screw at the tail end of the melt adhesive pushing cavity is provided with a stirring mechanism extending into the stirring barrel, the rigid communicating shaft is provided with a plurality of stirring blades, and the tail end of the melt adhesive pushing cavity is provided with an extrusion device; and a molten gel outlet is formed in the position, close to the side wall of the top of the stirring barrel.
2. The wood-plastic guardrail machining device of claim 1, wherein an inclined elastic extrusion plate is fixedly connected to the tail end of the melt glue pushing cavity.
3. The wood-plastic guardrail machining device as claimed in claim 1, wherein the extrusion device is an elastic extrusion block fixedly connected to the middle opening at the tail end of the melt adhesive pushing cavity.
4. The wood-plastic guardrail processing device as claimed in claim 1, wherein the bottom of the melt glue collecting cavity is inclined towards the stirring barrel.
5. The wood-plastic guardrail processing device as claimed in claim 1, wherein the bottom of the stirring barrel is provided with an ultrasonic generator and an ultrasonic transducer.
6. The wood-plastic guardrail processing device as claimed in claim 1, wherein the stirring mechanism comprises two rigid communicating shafts, a corner flexible shaft is connected between the two rigid communicating shafts, and a plurality of stirring blades are arranged on the rigid communicating shaft extending into the stirring barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711417774.4A CN108162238B (en) | 2017-12-25 | 2017-12-25 | Wood-plastic guardrail machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711417774.4A CN108162238B (en) | 2017-12-25 | 2017-12-25 | Wood-plastic guardrail machining device |
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| Publication Number | Publication Date |
|---|---|
| CN108162238A CN108162238A (en) | 2018-06-15 |
| CN108162238B true CN108162238B (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711417774.4A Active CN108162238B (en) | 2017-12-25 | 2017-12-25 | Wood-plastic guardrail machining device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561646A (en) * | 2019-09-27 | 2019-12-13 | 张枫 | High-efficient plastics VOC remove device |
| CN114248394B (en) * | 2021-11-19 | 2024-04-30 | 蓝山永晖玩具制品有限公司 | External exhaust mechanism for injection molding machine |
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| CN201020842Y (en) * | 2007-04-05 | 2008-02-13 | 徐凌秀 | Wood plastic composite material injection moulding machine |
| CN203343019U (en) * | 2013-07-17 | 2013-12-18 | 勤泽联合实业有限公司 | Screw-rod hot glue melting machine |
| CN103921425A (en) * | 2014-04-22 | 2014-07-16 | 刘道根 | Plastic extruder |
| CN104552551A (en) * | 2014-12-30 | 2015-04-29 | 东莞市南兴家具装备制造股份有限公司 | Spiral upper-end glue feeding device of automatic edge bonding machine |
| CN204354455U (en) * | 2014-11-17 | 2015-05-27 | 普力信包装材料(上海)有限公司 | A kind of high-efficiency screw extruder that can control blowing |
| CN205661019U (en) * | 2016-05-31 | 2016-10-26 | 湖北凯威高分子材料有限公司 | Macromolecular material compounding extrusion device |
| CN205818395U (en) * | 2016-07-21 | 2016-12-21 | 汕头市亨德利塑胶有限公司 | A kind of PVC wood plastic plate Automatic Production System |
| CN206561570U (en) * | 2017-02-22 | 2017-10-17 | 东莞市诠盛塑料有限公司 | A kind of plastic material extrusion device |
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2017
- 2017-12-25 CN CN201711417774.4A patent/CN108162238B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201020842Y (en) * | 2007-04-05 | 2008-02-13 | 徐凌秀 | Wood plastic composite material injection moulding machine |
| CN203343019U (en) * | 2013-07-17 | 2013-12-18 | 勤泽联合实业有限公司 | Screw-rod hot glue melting machine |
| CN103921425A (en) * | 2014-04-22 | 2014-07-16 | 刘道根 | Plastic extruder |
| CN204354455U (en) * | 2014-11-17 | 2015-05-27 | 普力信包装材料(上海)有限公司 | A kind of high-efficiency screw extruder that can control blowing |
| CN104552551A (en) * | 2014-12-30 | 2015-04-29 | 东莞市南兴家具装备制造股份有限公司 | Spiral upper-end glue feeding device of automatic edge bonding machine |
| CN205661019U (en) * | 2016-05-31 | 2016-10-26 | 湖北凯威高分子材料有限公司 | Macromolecular material compounding extrusion device |
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| CN108162238A (en) | 2018-06-15 |
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Address after: 400000 no.20-10, building 2, No.70, Yinxing Road, Erlang science and technology new town, Jiulongpo District, Chongqing Patentee after: Chongqing Lifan Metal Structure Co.,Ltd. Address before: 400000 no.20-10, building 2, No.70, Yinxing Road, Erlang science and technology new town, Jiulongpo District, Chongqing Patentee before: CHONGQING LIFAN DECORATION ENGINEERING Co.,Ltd. |
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