Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
  • B65G53/34—Details
  • B65G53/40—Feeding or discharging devices
  • B65G53/42—Nozzles

Definitions

• the present invention relates to a filling nozzle for filling resin pellets in a storage facility such as a silo into a container for transportation such as a lorry, a container, a resin pellet filling system, and a resin pellet filling method.
• a storage facility such as a silo into a container for transportation
• a resin pellet filling system such as a lorry, a container, a resin pellet filling system, and a resin pellet filling method.
• Resin pellets requiring low foreign matter are known.
• metal powder derived from equipment side forces such as silos and pipes, resin pelletization process (strands with high extruder power) It is required to reduce the content of grease waste generated by contact with the piping wall, etc. .
• the storage capacity (recording density) of optical discs the demand for reduction of contained foreign matters has become increasingly severe.
• Patent Document 1 JP-A-11-208893
• Patent Document 2 Japanese Patent Laid-Open No. 2000-355426
• Patent Document 3 Japanese Patent Laid-Open No. 2001-261090
• Patent Document 4 Japanese Unexamined Patent Publication No. 2003-335305
• the clean room including clean booth
• the nozzle and hose are connected to the transport container.
• the connection port of the transport container is not always at the same position every time due to the shift of the stop position due to the operation technology of the transport vehicle and the dimensional tolerance between the vehicle bodies.
• the nozzles and hoses must be able to tolerate positional deviations of ⁇ 50mm in the front-rear and left-right directions, ⁇ 150mm in the vertical direction, and ⁇ 5 ° in the tilt direction.
• a stainless steel flexible hose is known as one that satisfies such a requirement.
• a stainless steel flexible hose for example, with a diameter of 100 mm (4 inches), absorbs misalignment of ⁇ 50 mm in the front and rear, left and right directions, ⁇ 150 mm in the up and down directions, and ⁇ 5 ° in the tilt direction.
• the length of 3m or more is required, and the clean room becomes larger just by losing operability.
• the diameter of the flexible hose is increased to 150 mm (6 inches), the hose will become heavier and the operability will be worse.
• the present invention has been considered in view of the above circumstances, and is a compact filling nozzle capable of removing foreign substances from a filled resin pellet as long as it can exhibit an excellent displacement-absorbing action, and a resin.
• the purpose is to provide a pellet filling system and a method for filling a resin pellet.
• the filling nozzle of the present invention is used for transporting the resin pellets in the silo.
• a filling nozzle for filling a container comprising an upper part connected to an outlet of the silo and a lower part connected to a filling port of the transport container, wherein the upper part Silo discharge loca Provided with an inner cylinder that guides discharged resin pellets into the lower part, and an outer cylinder that covers the outer periphery of the inner cylinder, and the lower part includes a front-rear direction, a left-right direction, an up-down direction, and an inclination direction
• a movable cylinder that is inserted into a space between the inner cylinder and the outer cylinder in a state in which the movement of the inner cylinder and the outer cylinder is allowed to guide the resin pellet discharged from the inner cylinder to the filling port of the transport container. It is as.
• the movable cylinder is moved in the front-rear direction, the left-right direction, the up-down direction, that is, in the X, Y, and Z axial directions.
• Independent movement and tilting movement are possible, and an excellent displacement-absorbing action can be exhibited.
• the length is about 2 m, it is possible to absorb a positional deviation of ⁇ 50 mm in the front and rear and left and right directions, ⁇ 150 mm in the upward and downward directions, and ⁇ 5 ° in the tilt direction.
• the space formed between the upper part and the lower part is used to cut the swarf pellet peculiar to the resin pellet from the resin pellet during filling. It can remove foreign substances such as greaves. For example, by exhausting the air that is also discharged from the filling loca of the transport container according to the filling amount of the resin pellets through the above space, the foreign matter contained in the exhausted material (waxed chips and oils) It is possible to reduce the content of foreign matter by the amount of debris.
• the upper part may include an exhaust duct that exhausts air in the outer cylinder.
• the resin pellet filling system of the present invention includes an upper part connected to the silo discharge port and a lower part connected to the filling port of the transport container, and the upper part Is provided with an inner cylinder that guides the exhaust pellets of the silo discharged into the lower part and an outer cylinder that covers the outer periphery of the inner cylinder, and the lower part includes a front-rear direction, a left-right direction, and a vertical direction.
• the resin pellets inserted into the space between the inner cylinder and the outer cylinder in a state where the movement in the tilt direction is allowed and discharged from the inner cylinder are filled in the transport container.
• a filling nozzle for filling the transportation container with the resin pellets in the silo having a movable cylinder leading to the filling port, a clean room containing the filling nozzle, and a clean air blowing device for blowing clean air into the clean room;
• the exhaust device exhausts the air inside the outer cylinder to the outside of the clean room via the exhaust duct of the upper part.
• the resin pellet filling system of the present invention supplies clean air into the transport container through a clean air input port provided separately from the transport port of the transport container. It can be set as the structure provided with a means.
• the filling port force air Can prevent foreign substances from falling and entering and outside air from entering.
• clean air is introduced into the container for transportation during filling, lightweight foreign matters such as sallow chips and swarf waste can be actively discharged together with air.
• the foreign matter content of the resin pellet filled in the transportation container can be further reduced.
• the method of filling a resin pellet according to the present invention is a resin pellet filling method for filling a resin container with a resin pellet in a silo, using the above resin pellet filling system, This is a method of filling the transport container with the resin pellets in the silo after communicating the discharge port of the silo and the fill port of the transport container through a filling nozzle.
• the method for filling the resin pellets of the present invention includes the air volume ( a ) m 3 Zmin of the tarine air blown into the clean room and the internal cylinder internal force via the exhaust duct of the upper part.
• the inside of the tare room can be positively pressured so that the air discharged from the filling port of the transport container during filling (the amount of air corresponding to the filling amount of the resin pellets) can be reliably exhausted outside the clean room. It can keep the outside air from flowing into the clean room through the connection opening.
• the inner cylinder internal force is transmitted through the air volume ( a ) m 3 Zmin of the tarine air blown into the clean room and the exhaust duct of the upper part.
• the air that is discharged from the filling port of the transport container during filling (filling amount of the resin pellets and the amount of air equivalent to the clean air that is put into the transport container) is taken out of the clean room.
• the clean room can be kept at a positive pressure as long as it can be exhausted reliably, and the flow of outside air from the connection opening to the clean room can be prevented.
• the present invention although it is a filling nozzle that can be easily reduced in size as compared with a flexible hose, it is possible to reduce the size of the movable cylinder in the front-rear direction, the left-right direction, the vertical direction, that is, X, Y, Z Independent movement in each axial direction and movement in the tilt direction are possible, and the movement in the tilt direction can exhibit an excellent displacement-absorbing action. As a result, it is possible to avoid an increase in the size of the clean room, reduce costs of the resin pellet filling system, and improve operability.
• the foreign material can be removed from the filled resin pellets using the space formed between the upper and lower parts, the content of foreign material in the resin pellets filled in the transport container is reduced. It becomes possible to make it.
• FIG. 1 (a) is a front view of a filling nozzle according to an embodiment of the present invention, (b) is a partially sectional front view showing an upper part of the filling nozzle according to an embodiment of the present invention, ( c) is a partially sectional front view showing a lower part of a filling nozzle according to an embodiment of the present invention.
• FIG. 2 (a) is a front view showing the displacement displacement absorbing function (left-right direction and up-down direction) of the filling nozzle according to the embodiment of the present invention, and (b) is the position of the filling nozzle according to the embodiment of the present invention. It is a front view which shows a shift
• FIG. 3 is an explanatory diagram showing an overall configuration of a resin pellet filling system according to an embodiment of the present invention.
• FIG. 1 (a) is a front view of a filling nozzle according to an embodiment of the present invention
• FIG. 1 (b) is a partially sectional front view showing an upper part of the filling nozzle according to an embodiment of the present invention
• FIG. (C) is a partially sectional front view showing the lower part of the filling nozzle according to the embodiment of the present invention
• FIG. FIG. 2 (b) is a front view showing the displacement displacement absorbing action (inclination direction) of the filling nozzle according to the embodiment of the present invention.
• the filling nozzle 10 shown in FIG. 1 is for filling the pellets in the silo into the transport container, and includes an upper part 11 connected to the silo discharge port, and the transport container.
• the lower part 12 connected to the filling port is provided.
• the upper part 11 has a double cylinder structure including an inner cylinder 13 and an outer cylinder 14, and the upper end of the inner cylinder 13 Is connected to the silo discharge port, the silo discharge loci discharged into the lower part 12 are guided along the inner periphery of the inner cylinder 13.
• the outer cylinder 14 covers the outer periphery of the inner cylinder 13 via a predetermined space S.
• a predetermined space S Above the space S is an inward flange formed at the upper end of the outer cylinder 14, or a force covered by an outward flange formed at the inner cylinder 13, and below the space S is in an open state. .
• the lower part 12 is provided with a funnel-shaped movable cylinder 15 having an inclined step portion formed on the lower end side.
• the lower part 12 When filling, the lower part 12 is connected to the filling port of the transport container, thereby forming an inner part.
• Cylinder 13 Force The discharged resin pellet passes through the funnel-shaped lower end of the movable cylinder 15 and is guided to the filling port of the transport container.
• the movable cylinder 15 has a larger diameter than the inner cylinder 13 and a smaller diameter than the outer cylinder 14, and moves independently in the front-rear direction, the left-right direction, and the up-down direction, that is, the X, Y, and Z axial directions. And inserted into the space S between the inner cylinder 13 and the outer cylinder 14 from below in a state in which the movement in the tilt direction is possible, and through a flexible support mechanism, for example, a suspension mechanism by the flexible chain 17 And supported by the upper part 11.
• a flexible support mechanism for example, a suspension mechanism by
• the movable cylinder 15 has a longitudinal direction, a lateral direction, a vertical direction, and a tilting direction. Due to this movement, it is possible to achieve excellent displacement absorption and to easily connect with a transport container.
• the outer diameter of the inner cylinder 13 is 101.6 mm
• the inner diameter is 95 mm
• the outer diameter of the outer cylinder 14 is 400 mm
• the inner diameter is 394 mm
• the outer diameter of the movable cylinder 15 is 250 mm
• the inner diameter is When 244mm, even with a filling nozzle 10 with a length (height) of about 2m, positional deviation of ⁇ 50mm in the front / rear and left / right directions, ⁇ 150mm in the up / down direction, and ⁇ 5 ° in the tilt direction Can be absorbed.
• the space S formed between the upper part 11 and the lower part 12 is used to remove foreign substances from the resin pellets being filled. Can do. For example, if the air that is also discharged from the filling loca of the transport container is exhausted through the space S according to the filling amount of the resin pellets, the foreign matter contained in the exhaust (such as the resin cut powder, the resin waste, etc. It is possible to reduce the foreign matter content by the amount of).
• the upper part 11 When performing such exhaust, the upper part 11 is provided with an exhaust duct 16 for exhausting the air in the outer cylinder 14, and a suction unit is connected to the exhaust duct 16 to fill the air containing foreign matter.
• a suction unit By positively exhausting from the inside of the nozzle 10, a more preferable foreign matter removing effect can be exhibited.
• FIG. 3 is an explanatory diagram showing the overall configuration of the resin pellet filling system according to the embodiment of the present invention.
• the resin pellet filling system shown in this figure is a system for filling the resin pellets in the silo 20 into the transport container 30, and is a clean booth that accommodates the filling nozzle 10 and the filling nozzle 10 described above.
• (Clean room) 40 clean air blowing device (clean air blowing means) 50 that blows clean air into the clean booth 40, and the air in the outer cylinder 14 through the exhaust duct 16 of the upper part 11 of the clean booth 40
• an exhaust unit (filling nozzle exhaust means) 60 for exhausting outside.
• the silo 20 stores a resin pellet such as a low foreign substance polycarbonate resin pellet, and discharges the resin pellet from a discharge port 21 formed at the lower end.
• the transport container 30 is a lorry or a container that can be transported by a vehicle.
• a lorry that can be dumped up is used as the transport container 30.
• the container 30 for transportation made of lorries is dumped up at the time of filling.
• the transport container 30 has a filling port 31 at the upper part on the front end side which is the dump-up side, and the filling port 31 is covered with a dust cap 32.
• the dust cap 32 is removed before or after the transport container 30 is dumped up.
• the clean booth 40 is provided on the upper floor of the space that accommodates the transport container 30, for example, on the second floor of a building in which the resin pellet filling system is constructed. 40 clean booths
• the filling nozzle 10 connected to the discharge port 21 of the silo 20 is suspended on the ceiling, and the connection for connecting the filling nozzle 10 to the filling port 31 of the transport container 30 is carried on the floor of the clean booth 40. Opening 41 is formed.
• the clean air blowing device 50 is composed of, for example, a fan unit installed behind the ceiling of the clean booth 40.
• the fan unit has a prefilter or HEAP filter (99.97% of suspended particulates of 0.3 m or more). More preferably, the outside air (clean air) filtered by the ULPA filter is blown into the clean booth 40 with the ceiling force.
• the exhaust unit 60 is configured using, for example, a suction unit that sucks the air in the outer cylinder 14 to the outside of the clean booth 40 via the clean pipe 61 connected to the exhaust duct 16.
• the periphery of the filling nozzle 10 is arranged. Maintaining a clean state, foreign matter can be prevented from entering the filling nozzle 10 and the transport container 30. Moreover, since the air in the outer cylinder 14 is exhausted outside the tarine booth 40 through the exhaust duct 16 of the upper part 11, foreign substances contained in the filled resin pellets can be actively removed, and further Air containing air is exhausted into the clean booth 40 and the inside can be avoided.
• the above-described resin pellet filling system includes a clean air input device 70 for supplying clean air into the transport container 30 via a clean air input port 33 provided separately from the filling port 31. It is preferable.
• the clean air input device 70 includes, for example, a clean air supply means (not shown) such as a compressor unit or a blower equipped with a HE PA filter, a coupler 71 connectable to the clean air input port 33, the coupler 71 and the tally. And a clean air input line (pressure resistant PVC hose) 72 connecting the air supply means.
• the filling port 31 is supplied by supplying clean air to the transport container 30. Air can be blown out to prevent foreign objects from falling, mixing, and outside air. Also, if clean air is introduced into the transporting container 30 during filling, fine powdery foreign substances such as chips and greased waste contained in the resin pellets are loaded from the filling port 31 together with air. Since it can be discharged extremely, it is possible to further reduce the foreign matter content of the resin pellet filled in the transport container 30.
• a sampling nozzle 80 and a clean air gun 90 may be provided in the resin pellet filling system.
• the sampling nozzle 80 is used to sample the resin pellets stored in the silo 20 and check the quality of the pellets before filling into the transport container 30.
• the sampling nozzle 80 is connected to the silo 20 via a pipe 81. ing.
• the clean air gun 90 blows away dust adhering around the filling port 31 and dust cap 32 before opening the filling port 31 of the transport container 30 and cleans and removes it.
• it is connected to clean air supply means (not shown) via a pressure resistant PVC hose 91.
• the resin pellet filling method according to the embodiment of the present invention is a method for filling the resin container 30 with the resin pellets in the silo 20, and using the above-described resin pellet filling system, the filling nozzle 10
• the exhaust port 21 of the silo 20 and the filling port 31 of the transport container 30 are communicated with each other, and then the resin pellets in the silo 20 are filled into the transport container 30.
• the misalignment of the transportation container 30 is absorbed by the filling nozzle 10, so that the connection between the filling nozzle 10 and the transportation container 30 is facilitated. Further, by using the space S formed between the upper part 11 and the lower part 12, fine powdery foreign matters such as swarf dust can be removed from the filled grease pellets.
• the air discharged from the filling port 31 of the transport container 30 during filling (the amount of air corresponding to the filling amount of the resin pellet) can be reliably exhausted. Further, the inside of the clean booth 40 can be kept at a positive pressure, and contamination due to the outside air flowing into the clean booth 40 from the connection opening 41 can be prevented.
• the foreign matter contained in the resin pellets being filled can be positively discharged from the filling port 31 by the cleaner introduced into the transport container 30 from the clean air inlet 33.
• air discharged from the filling port 31 of the transport container 30 during filling filling amount of the resin pellets and an amount of air equivalent to clean air charged into the transport container 30
• the inside of the clean booth 40 can be kept at a positive pressure, and contamination due to the outside air flowing into the tarin booth 40 from the connection opening 41 can be prevented.
• the worker on the second floor moves the movable cylinder 15 of the filling nozzle 10 and aligns the lower end portion thereof with the filling port 31 of the transport container 30.
• the movable cylinder 15 moves by a predetermined amount in the front-rear direction, the left-right direction, the up-down direction, and the tilt direction, and exhibits a good displacement-absorbing action. Therefore, the connecting operation to the filling port 31 of the transport container 30 is easily performed. be able to.
• the filling nozzle 10 is connected to the filling port 31 of the transport container 30, the resin pellets are discharged from the silo 20 and filling of the resin pellets into the transport container 30 is started.
• the internal force of the outer cylinder 14 is also exhausted outside the clean booth 40 through the air volume (a) m 3 Zmin of clean air blown into the clean booth 40 and the exhaust duct 16 of the upper part 11.
• Air flow rate (b) m 3 Zmin and the air volume of air that also discharges the filling port 31 of the transport container 30 according to the filling amount of the resin pellets (c) m 3 Zmin and the clean air input port 33 The amount of clean air flow into the transport container 30 (d) m 3 Zmin
• a lorry is used as a transportation container, but a container (a cylinder, a rectangular parallelepiped, etc., any shape) may be used. Further, the container may be filled in a horizontal state without dumping up the transport container. However, when a horizontal transportation container is filled with resin pellets at a single location, the filling efficiency decreases due to the angle of repose of the resin pellets, so multiple (for example, 3 to 4) filling ports can be used simultaneously. Or it is preferable to fill sequentially.
• the resin pellets targeted by the present invention are not limited in material as long as they require low foreign matter.
• low foreign substance polycarbonate-based resin pellets currently mass-produced for optical discs low foreign substance hexane-based resin pellets that may be used in next-generation optical disks, and coating of high-voltage wire cables It can be applied to the filling of low foreign polyethylene resin pellets used for materials.
• the present invention can be applied to a filling nozzle, a resin pellet filling system, and a resin pellet filling method for filling resin pellets in a silo into a transport container such as a lorry or a container. It can be suitably used for filling required polycarbonate-based resin pellets.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
• Loading Or Unloading Of Vehicles (AREA)
• Basic Packing Technique (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

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Citations (5)

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• 2005
  • 2005-12-12 JP JP2005358044A patent/JP4916166B2/ja not_active Expired - Fee Related
• 2006
  • 2006-12-05 WO PCT/JP2006/324209 patent/WO2007069492A1/ja active Application Filing
  • 2006-12-05 DE DE112006003356T patent/DE112006003356T5/de not_active Withdrawn
  • 2006-12-05 CN CN2006800466306A patent/CN101326104B/zh not_active Expired - Fee Related
  • 2006-12-11 TW TW095146287A patent/TW200730402A/zh not_active IP Right Cessation

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