JP2014105054A - Apparatus and method for charging powder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inversion throw-in type apparatus for charging powders where the dusting of the powders can be suppressed and the powders are efficiently charged without polluting the environment around the charging apparatus.SOLUTION: An apparatus for charging powders where the powders stored in a cylindrical storage container 1 with a bottom are transferred to another container 15 comprises: a chute 12 which covers the opening of the storage container 1 with a charging port 12A so as to seal the opening of the storage container 1; an inversion and elevation mechanism 14 which elevates the storage container 1 together with the chute 12 and which inverts the bottom of the storage container 1 being downward in a falling position so as to be upward in a rising position; and a flexible hose 16 to connect the charging port 12A of the chute 12 to the charging port 15A of another container 15.

Description

  The present invention relates to a powder charging device and a charging method for transferring powder contained in a bottomed cylindrical container such as an open drum type drum can into another container such as a hopper or a mixer. Is.

  As such a powder charging device and charging method, as described in Patent Document 1, an opening is formed in the upper part of the hopper, and the drum can from which the lid is removed is gripped by the above method. An inversion feeding type is known in which powder is put into a hopper from this opening by turning upside down while moving above the opening. As another example, as described in Patent Document 2, a suction nozzle connected to a vacuum conveyor is inserted into a drum can and sucked into a container by pneumatic transportation. A suction-in type is also known.

JP 2004-196442 A JP 2003-072954 A

  However, in the reverse charging type described in Patent Document 1, when the drum can with the lid removed is turned upside down and tilted, the powder flows at once when the inclination of the drum reaches the repose angle of the powder. Then, it flows into the opening of the hopper, and a large amount of dust rises. For this reason, as described in Patent Document 1, it is inevitable that the surrounding environment is contaminated even if the opening of the charging device or the hopper is covered with a wall or a partition wall. Further, even if a dust collector is provided, a large amount of dust cannot be collected in many cases, and further increasing the amount of dust collecting air will result in a decrease in the amount of powder input to the hopper.

  On the other hand, with the suction-in type described in Patent Document 2, dust generation can be suppressed, but contamination due to wear of piping during air transportation or contact between the bag filter and powder may become a problem. Many. In some cases, the powder itself cannot be exposed to air, and in such a case, a suction-in type by pneumatic transportation cannot be used.

  The present invention has been made under such a background. In the reverse charging type powder charging device and the charging method described in Patent Document 1, the suction charging type described in Patent Document 2 is used. It is an object of the present invention to provide a powder charging device and a charging method that can suppress dust generation in the same way as those of the device and can efficiently input powder without polluting the environment around the charging device. It is said.

  In order to solve the above-described problems and achieve such an object, the powder input device of the present invention inputs and transfers the powder stored in the bottomed cylindrical storage container to another container. A powder charging device comprising a chute that covers the opening of the container with an inlet, and lifts and lowers the container together with the chute, and is directed downward in the lowered position. And a reversing / lifting mechanism for reversing the container so that the bottom of the container is upward in the raised position, and a flexible hose that connects the chute input port and the supply port of the other container. It is characterized by being.

  Further, the powder charging method of the present invention is a powder charging method in which powder stored in a bottomed cylindrical storage container is transferred to another container and transferred, and a chute having an input port The container is covered so that the opening of the container is hermetically sealed, and the container is raised by a reversing lift mechanism that raises and lowers the container together with the chute, and at the lowered position, the container is turned downward. The container is inverted so that the bottom portion is upward in the raised position, and the powder is charged into the other container via a flexible hose connecting the chute inlet and the other container supply port. It is characterized by that.

  In such a powder charging device and charging method, a chute charging port and a supply port of another container such as a hopper to which the powder is transferred are connected by a flexible hose, and an open drum type drum can The powder stored in such a container is lifted from the lowered position by the reversing lift mechanism after the opening is sealed by the chute, and is reversed so that the bottom is directed upward, thereby the flexible hose. Through another container. Therefore, dust does not scatter around the charging device, and contamination due to dust generation can be prevented, and a decrease in the amount of powder charged into other containers can be suppressed.

  The flexible hose is formed of, for example, a resin material having elasticity or flexibility, and has a cylindrical shape when no force is applied, and is curved in an arc shape while maintaining a circular shape up to a predetermined allowable radius. Can be made. Therefore, in the charging device, the flexible hose is connected to the supply port of the other container by extending downward from the charging port of the chute and extending downward after drawing an arc in the lowered position. As the container moves toward the raised position, the flexible hose keeps the curvature of the arc constant on the chute inlet side while the curvature of the arc is constant on the supply port side of the other containers. By making it straight so as to extend in a shape, it is possible to prevent damage from being caused by preventing excessive external force from acting on the flexible hose even when repeated raising and lowering and reversing over a long period of time.

  Here, in order to straighten the flexible hose so as to extend linearly on the supply port side of the other container while maintaining a constant curvature on the supply port side of the chute as the storage container moves toward the raised position in this way. For example, the reversing / lowering mechanism includes a holding portion that holds the storage container integrally with the chute, and the holding portion moves up and down together with the holding portion in parallel with the center line of the arc drawn by the flexible hose at the lowered position. The container may be reversed by being rotated around the rotation axis. As a result, the flexible hose is straightened so as to be unwound from the arc when the container is raised, and is curved so as to be rewound to the arc when lowered, so that a constant curvature is maintained. Can do.

  In addition, after returning the container after the powder is put to the lowered position, the chute is removed from the opening of the container after the powder is charged in order to put the powder in the next container. At this time, if the powder in the storage container or the chute is floating, this may leak and contaminate the surroundings of the charging device. For this reason, the charging device is further interposed in the lowered position so as to seal between the opening of the storage container after the powder is charged and the chute, and sucks the inside of the storage container and the chute to collect dust. It is desirable to provide a dust collecting mechanism that can further clean the environment around the charging device.

  As described above, according to the present invention, in the reverse charging type powder charging apparatus and charging method, dust generation during powder charging can be prevented, and the surrounding environment can be prevented from being contaminated. At the same time, it is possible to prevent the powder input amount from decreasing, and to efficiently transfer the powder.

It is a side view which shows one Embodiment of the injection device of the powder of this invention. It is a side view which shows the inversion raising / lowering mechanism in embodiment shown in FIG. It is a front view of the inversion raising / lowering mechanism shown in FIG. It is the simplified perspective view for demonstrating the inversion raising / lowering mechanism shown in FIG. It is a side view which shows the process of receiving the drum can at the time of throwing in powder by the embodiment shown in FIG. It is a side view (side view when a drum can and a holding | maintenance part are in a fall position) which shows the process of clamping a drum can at the time of throwing in powder by embodiment shown in FIG. FIG. 2A is a side view showing a state where a drum can is inverted by 45 ° when powder is charged according to the embodiment shown in FIG. 1, and FIG. FIG. 1A is a side view showing a state where the drum can is inverted by 135 °, and FIG. 1B is a side view showing a state where the drum can is inverted by 180 °. FIG. It is a side view which shows the process of collecting dust in the drum can and chute after powder injection in embodiment shown in FIG. FIG. 1 is a simplified diagram for explaining (a) a step of clamping a drum can, (b) a state in which the drum can is inverted by 90 °, and (c) a state in which the drum can is inverted by 180 °. It is a perspective view.

  FIGS. 1 to 4 show an embodiment of the powder charging apparatus of the present invention, and FIGS. 5 to 9 show an embodiment of the powder charging method of the present invention by the charging apparatus of this embodiment. An embodiment will be described. The powder container in this embodiment is a bottomed cylindrical open drum type drum can 1 whose upper opening can be sealed with a lid 1A. The drum can 1 is attached to and detached from the lid as shown in FIG. After the lid 1 </ b> A is removed by the device 2, the device 2 is transported to the charging device by the transport conveyor 3.

  As shown in FIG. 1, the charging device of the present embodiment receives a drum can 1 transported by the transport conveyor 3, and discharges the drum can 1 after the powder is charged to the transport conveyor 3, and this roller A chute 12 for covering the upper opening of the drum can 1 received by the conveyor 11 so as to be sealed, a reversing / lowering mechanism 14 having a holding portion 13 for holding the drum can 1 integrally with the chute 12, and the inside of the drum can 1 A hopper 15 as another container in the present embodiment, and a flexible hose 16 connecting the charging port 12A of the chute 12 and the supply port 15A of the hopper 15 are provided. .

  A plurality of rollers 11 </ b> A that can be rotationally driven are arranged in parallel on the roller conveyor 11 at intervals in the conveyance direction of the drum 1 from the conveyance conveyor 3 (right direction in FIGS. 1 and 5). These rollers 11A are rotationally driven to receive the drum can 1 from the transport conveyor 3, and the drum can 1 is positioned when it is transported to a predetermined transport position on the roller conveyor 11 as shown in FIG.

  The hopper 15 is positioned on the transport direction side with a slight gap from the transport position. The hopper 15 in the present embodiment is a unit in which a funnel-shaped body portion having a truncated cone shape that gradually decreases in diameter as the inner and outer diameters go downward, and a cylindrical portion that extends from the upper end of the body portion, are integrally formed. The lower end portion of the body portion is provided with a valve and is provided with a metering discharge portion 15B capable of discharging a predetermined amount of powder from the hopper 15, and the upper end portion of the cylindrical portion is sealed with a lid 15C. The supply port 15A has a circular shape at the edge of the lid 15C on the roller conveyor 11 side and is opened in the vertical direction.

  In addition, a drive shaft that is rotationally driven by a motor or the like is inserted into the hopper 15 along the center line of the hopper 15 through the center portion of the lid 15C. A leveling bar is attached horizontally to the leveling mechanism 15D for leveling the upper surface of the powder charged into the hopper 15 horizontally. Further, a knocker and an air blaster (not shown) are attached to the hopper 15. Such a hopper 15 is installed and supported on a hopper support base 15E via a load cell 15F.

  The reversing / lowering mechanism 14 raises and lowers the chute 12 and the drum can 1 held by the holding portion 13 together, and raises the bottom of the drum can 1 that is directed downward as shown in FIG. In the position, the drum can 1 is inverted together with the chute 12 and the holding portion 13 so as to face upward as shown in FIG. In this inversion mechanism 14, an elevating part 18 is provided so as to be able to be raised and lowered on a frame 17 disposed so as to surround the hopper 15, and the holding part 13 is attached to a rotating shaft 18 </ b> A provided in the elevating part 18. It is attached.

  The frame 17 has a gate shape with a total of four struts 17A erected in the vertical direction symmetrically with respect to the center line of the hopper 15 on both outer sides of the hopper 15 as viewed from the conveying direction. The pair of struts 17A are disposed so as to overlap the hopper 15 in the conveying direction as shown in FIGS. Of these columns 17A, racks 17B are provided on the side surfaces of the two columns 17A on the both sides of the roller conveyor 11 facing the roller conveyor 11 side so as to extend in the vertical direction.

  The elevating part 18 of the reversing elevating mechanism 14 rotates about a pair of elevating members 18B attached to the respective pair of support columns 17A on both outer sides of the hopper 15 and a rotation axis extending horizontally between the elevating members 18B. The rotary shaft 18A that is freely supported, a pair of pinion gears 18C that are rotatably attached integrally to the rotary shaft 18A around the rotational axis, and meshed with the racks 17B of the two support columns 17A, respectively, A motor that is attached to the elevating member 18B and rotationally drives the pinion gear 18C and a rotational drive means 18D that includes a speed reducer and the like are provided. Here, the datum line in contact with the pitch circle of the pinion gear 18C of the rack 17B meshed with the pinion gear 18C coincides with the center line of the supply port 15A of the hopper 15 when viewed in the direction of the rotation axis.

  The pair of elevating members 18B are, for example, plate-like members extending perpendicularly to the rotation axis of the rotation shaft 18A, and are respectively stretched outside the hopper 15 of the pair of support columns 17A on one side. 18A is supported between these elevating members 18B on the roller conveyor 11 side of the two columns 17A on the roller conveyor 11 side. Further, the elevating member 18B is provided with a plurality of cam followers 18E that can rotate by being engaged with a column 17A on which the rack 17B is not provided, and are rotated by the cam followers 18E and the rotation driving means 18D. With the pinion gear 18C, the pair of elevating members 18B is attached to the frame 17 so as to be able to move up and down together with the rotary shaft 18A and to be stopped at any lifting position.

  The holding part 13 of the reversing / lowering mechanism 14 has a base end fixed to the rotary shaft 18A in parallel to each other with a gap larger than the outer diameter of the drum can 1 and the width of the roller conveyor 11 in the rotational axis direction of the rotary shaft 18A. A pair of holding members 13A and a clamper 13B provided at the tip of these holding members 13A are provided. As shown in FIG. 2, the holding member 13 </ b> A is formed in a frame shape, and the base ends thereof are also connected to each other by a frame material, and the tangential direction is centered on the tangent line of the pitch circle of the pinion gear 18 </ b> C when viewed in the rotational axis direction. As shown in FIG. 5, when the holding portion 13 is in the lowered position, the tangent line coincides with the center line of the drum can 1 in the transport position and is vertically moved as shown in FIG. It is made to extend.

  In addition, the clamper 13B is fixed to a plurality of cylinder devices in which the cylinder rod can be projected and retracted at the front end side of both holding members 13A in parallel with the tangent line when viewed in the rotational axis direction, and the cylinder rod ends of these cylinder devices. And a clamp frame spanned between both holding members 13A. The clamp frame has a pair of long sides longer than the width of the roller conveyor 11 extending between the holding members 13A in parallel with the rotation axis and a pair of short sides shorter than the outer diameter of the drum can 1 connecting these long sides. The front end of the cylinder rod is fixed to the short sides of the rectangular frame having side portions.

  Such a clamper 13B is configured to extend the cylinder rod of the cylinder device when the holding unit 13 is in the lowered position when the drum can 1 is not conveyed to the roller conveyor 11, so that the long side portion of the clamp frame is The roller conveyor 11 is inserted between the rollers 11 </ b> A spaced apart and buried at a lower position than the upper surface of the roller conveyor 11. Then, when the drum can 1 is transported and is positioned at the transport position, the cylinder rod is pulled in, so that the clamp frame rises and comes into contact with the bottom of the drum can 1 so that the drum can 1 is lifted from the roller conveyor 11. ing.

  Further, in the present embodiment, the chute 12 is fixed to the frame member that connects the base ends of the pair of holding members 13A and is provided integrally with the holding portion 13, and is lifted by the clamper 13B as described above. The upper opening of the drum can 1 is sealed and covered, and the drum can 1 is sandwiched between the clamp frame and held. In this embodiment, the chute 12 has a frustoconical funnel shape similar to the body of the hopper 15, and the large-diameter opening of the chute 12 can be sealed by sealing the opening of the drum 1. In addition, the small-diameter opening is a circular opening 12A.

  Such a chute 12 is such that when the holding portion 13 is in the lowered position, the insertion port 12A faces upward, and the center line of the circle formed by the insertion port 12A coincides with the center line of the drum can 1 at the transport position and the lowered position. Accordingly, the center line of the insertion port 12A extends along the tangent line of the pitch circle of the pinion gear 18C when viewed in the direction of the rotation axis of the rotation shaft 18A. Further, the center line of the charging port 12A and the center line of the supply port 15A forming the circular shape of the hopper 15 are located on one plane perpendicular to the rotation axis, and further, the charging port 12A and the supply port 15A. Means that when the holding portion 13 is in the lowered position, it opens to a position equal to the rotational axis in the vertical direction. A vibrator 12B is attached to the chute 12.

  The flexible hose 16 that connects the charging port 12A of the chute 12 and the supply port 15A of the hopper 15 is made of polypropylene that is harder than the cylindrical portion on the outer periphery of a cylindrical portion formed of a flexible resin material such as elastomer. A wire made of such a resin material is spirally wound and integrated, and has elasticity and flexibility. Such a flexible hose 16 can be bent in a circular arc shape while maintaining a circular cross section by expanding and contracting the cylindrical portion without causing wrinkles or slack up to a predetermined allowable radius.

  And when this holding | maintenance part 13 exists in a descent | fall position, this flexible hose 16 draws the circular arc of the radius more than the said permissible radius, extends upwards from the insertion port 12A of the chute 12, and extends downwards. It is connected to the supply port 15A. Further, the center line of the circle formed by the cross section of the flexible hose 16 at this time is on one plane perpendicular to the rotation axis where the center lines of the inlet 12A and the supply port 15A are located, and the direction of the rotation axis When viewed from the above, a semicircular arc is formed along the pitch circle of the pinion gear 18C.

  Furthermore, as shown in FIG. 9, the charging device of the present embodiment is interposed so as to seal between the upper opening of the drum can 1 and the chute 12 after the powder is charged, and the drum 1 and chute 12 are interposed. A dust collection mechanism 19 for collecting the dust by sucking the inside is provided. The dust collection mechanism 19 is configured, for example, such that an arm 19A is attached to a support shaft (not shown) so as to be rotatable in a horizontal plane, and a dust collection hood 19B is attached to the tip of the arm 19A.

  The dust collection hood 19B has a cylindrical shape having a center line extending in the vertical direction. The width in the center line direction is such that the large-diameter opening of the chute 12 and the transfer position when the holding unit 13 is in the lowered position. In this case, the distance between the bottom portion of the drum can 1 and the upper opening portion of the drum can 1 when the bottom portion is installed on the roller conveyor 11 is substantially the same. The large-diameter opening of the chute 12 and the upper opening of the drum can 1 are sealed and sealed. The arm 19A and the dust collecting hood 19B are configured not to interfere with the holding member 13A of the holding unit 13 or the like when turning.

  In addition, a dust collection pipe (not shown) connected to the dust collector is connected to the dust collection hood 19B via, for example, the arm 19A and opened in the dust collection hood 19B. Then, the dust collecting hood 19B drives the dust collector in a state where the large-diameter opening of the chute 12 and the upper opening of the drum can 1 are sealed and sealed as described above. A small amount of the remaining floating powder is sucked through the dust collection tube and collected.

  An embodiment of the powder charging method of the present invention using the powder charging device having such a configuration will be described with reference to FIGS. First, as shown in FIG. 1, in the state where the holding unit 13 is in the lowered position and the clamp rod is extended from the upper surface of the roller conveyor 11 by extending the cylinder rod of the clamper 13B, the lid 1A is moved by the lid removing device 2. After the removal, the drum 1 containing the powder is transported to the transport position of the roller conveyor 11 by the transport conveyor 3 and the roller conveyor 11 as indicated by arrows in FIG. At this time, as described above, the center line of the drum 1 is made to coincide with the center line of the inlet 12A of the chute 12 and the tangent line of the center line of the flexible hose 16 at the inlet 12A.

  Next, as shown in FIG. 6, the clamp rod is brought into contact with the bottom of the drum can 1 by pulling the cylinder rod of the clamper 13 </ b> B, and the drum can 1 is further lifted from the roller conveyor 11 so that the upper opening has a large diameter of the chute 12. The drum can 1 is brought into contact with the opening and sandwiched between the clamp frame and the chute 12 and held by the holding unit 13. As a result, the drum 1 is placed at the lowered position, and the opening of the drum 1 is sealed by the chute 12 and sealed.

  If the drum can 1 is thus held by the holding portion 13, the pinion gear 18C is rotationally driven by the rotation driving means 18D of the reversing lift mechanism 14 to raise the drum can 1 integrally with the chute 12, and at the lowered position, the drum can 1 faces downward. The drum can 1 is inverted so that the bottom of the drum can 1 is directed upward at the ascending / descending position. That is, by rotating and driving the pinion gear 18C, the elevating part 18 of the reversing elevating mechanism 14 is raised along the rack 17B meshed with the pinion gear 18C, and the holding part 13 fixed to the rotating shaft 18A of the pinion gear 18C is moved. 7 and 8, the drum 1 is turned upside down by rotating clockwise in the drawing.

  At this time, the flexible hose 16 in the charging device according to the present embodiment has a pitch of the pinion gear 18C having the center line formed by the cross section in the direction of the rotation axis of the rotation shaft 18A and the rotation axis as the center line in the lowered position. It draws a semicircular arc along the circle, extends upward from the inlet 12A of the chute 12 and then extends downward and is connected to the supply port 15A of the hopper 15, and the holding portion 13 of the reverse lifting mechanism 14 is a pinion gear 18C. Meshes with the rack 17B, and is rotated about the rotation axis that rises in parallel with the center line of the arc at the lowered position, thereby reversing the drum 1.

  Therefore, when the drum can 1 is lifted and reversed integrally with the chute 12 by the reversing lift mechanism 14, the flexible hose 16 is unwound from the arc along the pitch circle as shown in FIGS. The curvature is kept constant on the side of the mouth 12A, and straightened so as to extend linearly on the side of the supply port 15A. In addition, when the drum can 1 and the chute 12 are lowered as will be described later, the flexible hose 16 is bent from the inlet 12A side so as to be rewound into an arc along the pitch circle. .

  By raising and reversing the drum can 1 and the chute 12 in this manner, the inlet 12A of the chute 12 is positioned above the supply port 15A of the hopper 15 and faces downward along with the opening of the drum can 1 as shown in FIG. The powder stored in the drum can 1 is dropped from the charging port 12A through the flexible hose 16 and charged into the hopper 15 from the supply port 15A.

  In order to charge the entire amount of powder in the drum 1, as shown in FIG. 8 (b), the drum 1, the inlet 12 </ b> A, the flexible hose 16, and the supply port 15 </ b> A are reversed so that the center lines are in a straight line. What is necessary is just to extend the hose 16 straightly. In addition, without rotating the center line until it becomes a straight line in this way, for example, as shown in FIG. 8A, the rotation axis by the rotation driving means 18D when the center line of the drum can 1 and the inlet 12A is at an arbitrary inclination angle. It is also possible to control the amount of powder input by decelerating or stopping the rotation of 18A. The amount of powder charged at this time can be measured by a load cell 15F provided in the hopper 15.

  Note that the vibrator 12B of the chute 12, the knocker of the hopper 15, and the air blaster may be operated in order to sufficiently put the powder remaining in the drum 1 or the chute 12 due to adhesion or the like into the hopper 15. Further, while the powder is being put into the hopper 15, the upper surface of the powder is leveled horizontally by the leveling mechanism 15D, thereby preventing the powder from being unevenly deposited on the supply port 15A side in the hopper 15. This can prevent the flexible hose 16 from being filled with the powder and preventing the powder from being fed into the hopper 15.

  When the powder is put into the hopper 15, the pinion gear 18C is rotated in the reverse direction to the above by the rotation driving means 18D, thereby lowering the drum can 1 held by the holding portion 13 integrally with the chute 12 and the drum can 1. The bottom portion is inverted so that the bottom portion is directed downward, and returned to the lowered position shown in FIG. Next, the drum 1 is removed from the chute 12 by extending the cylinder rod of the clamper 13B, and placed at the transport position on the roller conveyor 11 as shown in FIG.

  At this time, if a small amount of powder floats and remains in the drum can 1 or the chute 12, it may leak from the gap between the drum can 1 and the chute 12. Therefore, in such a case, as described above, the dust collection hood 19B is inserted into the gap portion by the arm 19A of the dust collection mechanism 19 to seal the opening of the drum can 1 and the chute 12, and then the dust collector is driven. Thus, the inside of the drum can 1 and the chute 12 may be sucked and collected from the dust collecting tube. After the dust collection hood 19B is removed, the drum can 1 with the dust collected inside is discharged by the roller conveyor 11 and returned to the transport conveyor 3, and the lid 1A is attached by the lid removing device 2 and discharged.

  As described above, according to the powder charging device and the charging method having the above-described configuration, the powder is transferred to the charging port 12A of the chute 12 that seals and covers the opening of the drum 1 that is the powder container. When the powder can be charged when the drum can 1 is lifted and reversed integrally with the chute 12 by the reversing lift mechanism 14, the supply port 15 </ b> A of the hopper 15, which is another container, is connected by the flexible hose 16. The body is put into the hopper 15 through the flexible hose 16.

  For this reason, even if the powder in the drum 1 flows into the hopper 15 from the charging port 12A through the flexible hose 16 at a stroke, the dust is not scattered around the charging device, and the surrounding environment is contaminated. It can prevent and clean. In addition, since the powder to be transferred to the hopper 15 is not scattered as dust in this way, it is possible to suppress a decrease in the amount of powder input to the hopper 15 and to efficiently transfer the powder. It can be carried out. In the above embodiment, the dust collected by the dust collecting mechanism 19 is the powder floating in the drum 1 and the chute 12 after the powder is charged. Little effect on powder input.

  In addition, the powder is not transported at high speed by pneumatic transport unlike the suction charging type charging device and charging method, so there is little risk of contamination due to wear or contact, and the powder is exposed to the air. It is possible to cope even in difficult cases. Further, in the charging device of the present embodiment, it is possible to automate the process from conveying the drum can 1 to the charging device, turning it over, turning in the powder by raising and lowering, and discharging the drum 1 after the powder is charged.

  On the other hand, as described above, in the present embodiment, when the drum 1 and the chute 12 are in the lowered position, the flexible hose 16 extends upward from the inlet 12A of the chute 12 and then extends downward to draw the arc of the hopper 15. It is connected to the supply port 15A, and as it goes to the ascending position by the reversing lift mechanism 14, on the supply port 15A side, the curvature of the arc is kept constant on the input port 12A side as shown in FIGS. Straightened to extend straight. Also, when descending from the ascending position to the descending position, the flexible hose 16 is bent while drawing an arc having a certain curvature from the inlet 12A side.

  Since the radius of the arc is equal to or greater than the allowable radius of the flexible hose 16, no excessive external force is applied to the flexible hose 16 even when repeated raising and lowering and reversing, and the flexible hose 16 is damaged over a long period of time. In addition, it is possible to prevent contamination of the powder due to breakage. In addition, since the flexible hose 16 is curved with a radius of curvature greater than the allowable radius in this way, the cylindrical portion is not wrinkled or loosened, and the inner peripheral surface of the cylindrical portion can be kept smooth. There is also an advantage that the body can be thrown in smoothly.

  Further, in this embodiment, when the drum 1 and the chute 12 are lifted and reversed in this way, the flexible hose 16 is straightened straight on the supply port 15A side while maintaining a constant curvature on the input port 12A side, When lowering, the holding portion 13 of the reversing lift mechanism 14 is lifted and lowered in parallel with the arc center line of the flexible hose 16 at the lowered position in order to curve while drawing a circular arc with a certain curvature from the inlet 12A side. The drum can 1 that is integrally held with the chute 12 connected to the flexible hose 16 is inverted and moved up and down by rotating up and down while rotating around the rotation axis of the rotating shaft 18A.

  More specifically, in the reverse lifting mechanism 14 in the present embodiment, the rotating shaft 18A is the rotating shaft 18A of the pinion gear 18C meshed with the rack 17B provided on the frame 17, and the holding portion 13 is also rotated. It is fixed to the shaft 18A. Further, the arc formed by the flexible hose 16 at the lowered position is along the pitch circle of the pinion gear 18C as viewed in the direction of the rotation axis of the rotation shaft 18A.

  For this reason, when the holding part 13 is raised, the flexible hose 16 is straightened so as to be unwound from the arc along the pitch circle on the supply port 15A side, while maintaining a constant curvature on the input port 12A side. The On the other hand, when the holding portion 13 is lowered, the flexible hose 16 is curved in an arc shape along the pitch circle from the insertion port 12A side, so that the flexible hose 16 is prevented from having a large curvature portion. Breakage can be prevented more reliably.

  Furthermore, in this embodiment, as the pinion gear 18C meshed with the rack 17B rotates up and down around the rotation axis of the rotation shaft 18A, the holding portion 13 fixed to the rotation shaft 18A also rotates. Then, the drum can 1 is reversed and raised and lowered integrally with the chute 12. Therefore, the number of the rotational drive means 18D for reversing and raising / lowering the drum can 1 can be reduced as shown in FIGS.

  However, in this embodiment, the drum can 1 is reversed and lifted in this way by rotating the pinion gear 18C meshed with the rack 17B by one rotation driving means 18D. As in a modification of the lifting mechanism 14, a lifting mechanism 20 that lifts and lowers the drum can 1 integrally with the chute 12 may be provided separately from the rotation driving means 18 </ b> D that rotates and reverses the drum can 1.

  That is, in the lifting mechanism 20, a rotating shaft 20A extending in parallel with the rotating shaft 18A is provided on the support 17A of the frame 17, and the winding drum 20B can be rotated integrally with both ends of the rotating shaft 20A. The elevating member of the elevating unit 18 is connected to and suspended from an elevating wire 20C such as a wire that is attached and wound around the take-up drum 20B. The rotating shaft 18A is not provided with the pinion gear 18C, and is not provided with the rack 17B.

  When the drum 1 is rotated by the rotation driving unit 18D and the rotary shaft 20A is rotated by the rotation driving unit 20D different from the rotation driving unit 18D, the lifting / lowering wire 20C is wound on the winding drum 20B. As shown in the order of FIGS. 10A to 10C, the elevating part 18 is raised while the drum can 1 is inverted so that the bottom part faces upward. Conversely, when the lifting / lowering wire 20C is unwound from the winding drum 20B, the lifting / lowering portion 18 is lowered while the drum can 1 is inverted so that the bottom portion is directed downward in the order of FIGS. 10 (c) to 10 (a).

  Also in the reversing / lifting mechanism 14 of such a modification, the reversal of the drum can 1 and the chute 12 by the rotation driving means 18D and the raising / lowering of the lifting / lowering part 18 by the rotation driving means 20D of the lifting mechanism 20 are synchronized with each other. As in the embodiment shown in FIG. 9, the drum 1 is straightened so as to extend linearly on the supply port 15 </ b> A side of the hopper 15 while maintaining a constant curvature on the input port 12 </ b> A side of the chute 12 as it goes to the raised position. be able to. In addition, the individual rotation driving means 18D and 20D can have a small power.

  Furthermore, the charging device of the above embodiment has a dust collecting hood 19B interposed so as to seal between the opening of the drum 1 after the powder is charged and the chute 12 in the lowered position. 1 and the chute 12 are further provided with a dust collecting mechanism 19 so that the powder floating in the drum 1 and the chute 12 when the chute 12 is separated from the drum 1 after the powder is charged. Can be prevented from leaking. Accordingly, it is possible to further clean the surrounding environment of the charging device.

  In the above embodiment, the chute 12 has a frustoconical funnel shape, and when the upper opening of the drum can 1 is sealed and covered, the center lines of the drum can 1 and the inlet 12A coincide with each other. However, the chute 12 may have a truncated cone surface shape in which the center lines of the large-diameter opening and the small-diameter opening are eccentric and inclined in one direction. In this case, the center lines of the drum can 1 and the inlet 12A are also eccentric. It will be. In the present embodiment, the other container to which the powder is transferred is the hopper 15. However, other types of sealable containers such as a tank, a mixer, and a feeder may be used. The storage container is not limited to a cylindrical one like the drum can 1.

1 drum (container)
DESCRIPTION OF SYMBOLS 2 Lid removal apparatus 3 Conveyor 11 Roller conveyor 12 Chute 12A Chute 12 insertion port 13 Holding part 13A Holding member 13B Clamper 14 Reverse raising / lowering mechanism 15 Hopper (other containers)
15A Supply port of hopper 15 16 Flexible hose 17 Frame 17B Rack 18 Lifting part 18A Rotating shaft 18C Pinion gear 18D Rotation drive means 19 Dust collecting mechanism 19B Dust collecting hood 20 Lifting mechanism

Claims (5)

A powder input device for transferring powder contained in a bottomed cylindrical container into another container and transferring it,
A chute that is provided with an input port so as to seal the opening of the container;
A reversing lift mechanism that raises and lowers the storage container integrally with the chute, and reverses the storage container so that the bottom portion of the storage container that is directed downward in the lowered position is directed upward in the raised position;
An apparatus for charging powder, comprising: a flexible hose connecting the charging port of the chute and the supply port of the other container. The flexible hose is connected to the supply port of the other container by extending downward from the chute input port after drawing an arc in the lowered position,
The reversing and raising / lowering mechanism is configured such that the flexible hose keeps the curvature of the arc constant on the inlet side of the chute and the supply port side of the other container is straight as the container moves toward the raised position. 2. The powder feeding apparatus according to claim 1, wherein the powder is straightened so as to extend in a shape.   The inversion lifting mechanism includes a holding portion that holds the containing container integrally with the chute, and the holding portion is moved up and down while the holding portion is parallel to the center line of the arc drawn by the flexible hose at the lowered position. The powder charging device according to claim 2, wherein the container is reversed by being rotated around a rotation axis that moves up and down.   A dust collection mechanism is provided to seal between the opening of the container and the chute after the powder is charged at the lowered position, and sucks and collects dust in the container and the chute. The powder injection device according to any one of claims 1 to 3, wherein the powder injection device is provided. A powder charging method for transferring powder contained in a bottomed cylindrical container into another container and transferring it,
Cover the opening of the container with a chute provided with an inlet,
The storage container is lifted by a reversing lift mechanism that lifts and lowers the storage container integrally with the chute, and the storage container is placed so that the bottom of the storage container, which is downward in the lowered position, is upward in the raised position. Invert
A powder charging method, wherein powder is charged into the other container via a flexible hose connecting the chute charging port and the supply port of the other container.

Images