JP2008232688A - Hopper device and combinational balance using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hopper device capable of preventing biting of a weighing object, and a combinational balance using it. <P>SOLUTION: This device is equipped with a hopper 1 having an impeller-shaped rotary gate 3 having a plurality of blades 4 having each equal central angle from a rotating shaft and extending radially, which are disposed rotatably around a virtual rotating axis 101 vertical to the first and second side walls 2c, 2d inside a housing 2; and a rotary device 41 for rotating the rotary gate around the rotating axis. Each blade has a uniform sectional shape in the extending direction of the rotating axis, and its rear face in a prescribed rotation direction is hollowed in the prescribed rotation direction, and its tip face constitutes a part of a cylindrical surface substantially around the rotating axis, and the front face in the rotation direction of its tip part 4a is formed so as to be hollowed in the reverse direction to the rotation direction, and an upper opening 2a is disposed so that an intersection point 210 between a center line 202 and a rotation orbital surface 103 of a blade tip face of the rotary gate is deflected from a vertical plane 201 including the rotating axis. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hopper device and a combination weigher using the same, and more particularly to a hopper device using a rotary gate or a rotary hopper and a combination weigher using the same.

  The combination weigher generally includes a plurality of supply hoppers that supply the objects to be weighed in batch units, and a plurality of weighing hoppers that measure the objects to be weighed respectively supplied from the plurality of supply hoppers. An optimum combination of weighing values is selected from the weighing hoppers to obtain an object to be weighed with a target weight.

  The gate that receives and discharges the objects to be weighed in the supply hopper and the weighing hopper is usually configured by an openable gate. However, the open / close gate reciprocates, which causes a problem of slow operation.

  Then, the hopper apparatus using a rotary gate is proposed (for example, refer patent document 1). This hopper device is configured to receive and discharge an object to be weighed by rotating an impeller-shaped partition member (gate) inside a cylindrical hopper body. This speeds up the transfer of the objects to be weighed.

  In addition, those described in Patent Documents 2 to 5 are known as hopper devices using a rotary gate.

In addition, a weighing device using a rotary hopper is known as a technique for speeding up the transfer of an object to be weighed in the same manner as a rotary gate (see, for example, Patent Document 6).
JP 2004-191269 A JP-A-3-504767 Patent No. 2750937 Publication Japanese Patent No. 2673069 Japanese Patent Laid-Open No. 3-123231 Japanese Patent No. 3576698

  However, for example, in the hopper device described in Patent Document 1, since the object to be weighed is received by the side wall of the hopper main body and the flat partition member, the partition member that rotates the object to be weighed attached to the side wall is caught. There is a problem that it is easy. Patent Documents 2 to 6 do not mention any solution for the biting of such an object to be weighed.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a hopper device capable of preventing biting of an object to be weighed and a combination weigher using the hopper device.

  In order to solve the above-described problems, a hopper device according to the present invention includes a flat plate-like first and second side walls that face each other in parallel and extend in the vertical direction, and that face each other and the first and second side walls. A cylindrical housing having third and fourth side walls that are in contact with each other so as to form a substantially right-angled ridgeline, and having an upper opening and a lower opening at the upper end and the lower end, respectively, and the first housing inside the housing And a rotation center perpendicular to the second side wall with a predetermined clearance from the first to fourth side walls, and a center angle that is uniform from the rotation axis. An impeller-shaped rotary gate having a plurality of radially extending blades, and a rotator that rotates the rotary gate about the rotation axis, and each of the blades includes: Uniform cross-sectional shape in the extending direction of the rotating shaft And a rear surface thereof in a predetermined rotation direction is recessed in the predetermined rotation direction, and a tip surface thereof substantially constitutes a part of a cylindrical surface centering on the rotation axis, and the predetermined rotation of the tip portion The upper opening is formed so as to be recessed in a direction opposite to the predetermined rotation direction, and the upper opening has a center line in plan view (hereinafter referred to as a plan view center line) and a tip surface of the blade of the rotary gate. The upper intersection with the rotation track surface is arranged so as to deviate in the predetermined rotation direction from a vertical plane including the rotation axis.

  The side wall of the third and fourth side walls that is closer to the center line in plan view of the upper opening extends over substantially the entire width of the side wall, and the upper surface thereof is inclined obliquely downward and the lower surface thereof. May be formed with a guide protrusion protruding inward so as to be along the rotation track surface of the tip surface of the blade.

  The plurality of blades of the rotary gate are sequentially rotated at a rotational position (hereinafter referred to as blade reference surface) in which the rear surface of the blade faces upward and the plane including the tip of the rear surface and the rotation axis (hereinafter referred to as blade reference surface) is substantially horizontal. , Receiving the measured object thrown in from the upper opening, and then rotating and moving in the predetermined direction to discharge the received measured object toward the lower opening. A controller for rotating the rotary gate by the rotating device may be provided.

  Further, the hopper device of the present invention has a pair of disk-shaped side walls that are coaxially opposed to and parallel to a virtual horizontal rotation axis, and a pair of disk-shaped side walls that are sandwiched between the pair of side walls and have a uniform central angle from the rotation axis. A rotary hopper having an impeller-like partition member having a plurality of blades extending radially so as to reach the outer periphery of the side wall, and a rotating device that rotates the rotary hopper around the rotation axis; Each of the blades has a uniform cross-sectional shape in the extending direction of the rotating shaft, a rear surface in a predetermined rotating direction is recessed in the predetermined rotating direction, and a tip surface thereof is substantially the above-mentioned A part of a cylindrical surface centering on the rotation axis is formed, and the front surface of the tip portion in the predetermined rotation direction is formed to be recessed in the direction opposite to the predetermined rotation direction.

  Third and second plate-like first and second side walls facing each other in parallel and extending in the vertical direction are opposed to each other so as to form a ridge line substantially perpendicular to the first and second side walls. And a cylindrical housing having an upper opening and a lower opening at the upper end and the lower end, respectively, and a pair of circular shapes at opposite portions of the first and second side walls of the housing. A side opening is formed, the rotary hopper is disposed so that the pair of side walls are loosely fitted to the pair of side openings, and the upper opening has a center line in plan view (hereinafter referred to as plan view). The upper intersection of the center line) and the rotation track surface of the tip surface of the blade of the rotary hopper may be disposed so as to deviate from the vertical plane including the rotation axis in the predetermined rotation direction. .

  A ridge line that is disposed above the rotary hopper and that is opposed to each other in parallel and extends in the vertical direction is opposed to the first and second side walls that are substantially perpendicular to the first and second side walls. A cylindrical upper guide having third and fourth side walls in contact with each other and having an upper opening and a lower opening at the upper end and the lower end, respectively, and a rectangular cross section disposed below the rotary hopper. A cylindrical lower guide, and the upper guide is formed so that the lower opening is along a rotation raceway surface of the rotary hopper, and the center line in the plan view of the lower opening and the rotary hopper The lower intersection of the lower guide has an opening at the upper end of the rotary hopper. of It may be formed as rolling along the raceway surface.

  A combination weigher of the present invention includes the hopper device according to any one of claims 1 to 6 as at least one of a supply hopper and a weighing hopper.

  The present invention is configured as described above, and has an effect of preventing the object to be weighed in the hopper device and the combination scale.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or corresponding components are denoted by the same reference symbols throughout the drawings, and redundant description thereof is omitted.

(Embodiment 1)
1A and 1B are diagrams showing a configuration of a hopper device according to Embodiment 1 of the present invention, in which FIG. 1A is a perspective view showing an appearance of the hopper device, and FIG. 1B is a cross-sectional view showing a longitudinal section of the hopper device. is there. In FIG. 1A, the housing 2 is indicated by a virtual line (two-dot chain line) so that the rotary gate 3 can be easily seen.

  As shown in FIG. 1, the hopper device of the present embodiment includes a hopper 1, a motor 41, and a controller 42.

  The hopper 1 has a housing 2 and a rotary gate 3. The housing 2 has flat plate-like first and second side walls 2c, 2d facing each other in parallel and extending in the vertical direction, and a ridge line facing each other and substantially perpendicular to the first and second side walls 2c, 2d. Are formed in a cylindrical shape having an upper opening 2a and a lower opening 2b at the upper end and the lower end, respectively. The upper opening 2a and the lower opening 2b constitute an inlet and an outlet of the object to be weighed 31, respectively.

  A rotary gate 3 is disposed inside the housing 2. The rotary gate 3 is rotatable with a predetermined gap from the first to fourth side walls 2c to 2f around a virtual rotation axis 101 perpendicular to the first and second side walls 2c and 2d. It is arranged. The rotary gate 3 is formed in an impeller shape having a plurality of (here, 2) blades 4 and 4 extending radially from the rotating shaft 101 with a uniform central angle θ (here, 180 degrees). All the blades 4 have the same shape. Specifically, the blade 4 has a uniform cross-sectional shape in the extending direction of the rotating shaft 101. The rear surface (hereinafter simply referred to as the rear surface) of the blade 4 in a predetermined rotational direction (here, counterclockwise direction in FIG. 1; hereinafter referred to as the rotational direction) is recessed in a semicircular shape in the counterclockwise direction over the entire surface. It is curved. The tip surface of the blade 4 is formed so as to constitute a part of a cylindrical surface substantially centered on the rotation shaft 101. The front surface (hereinafter simply referred to as the front surface) in the rotational direction of the tip portion 4a of the blade 4 is formed so as to be recessed in an arc shape in a direction opposite to the rotational direction (clockwise in FIG. 1A). The front surface of the portion other than the tip of the blade 4 is formed in an arc shape substantially along the rear surface. Thus, the blade 4 is formed in a plate shape that is curved in the rotational direction as a whole and has a tip portion 4a spread in a wedge shape.

  In the present invention, a plane including the tip of the rear surface of the blade 4 and the rotation shaft 101 is defined as a reference surface 102 (hereinafter referred to as a blade reference surface) representing the posture of the blade. A space surrounded by the curved rear surface of the blade 4 is referred to as a pocket 5. The pocket 5 constitutes an accommodating portion for the object to be weighed 31 together with the first and second side walls on both sides thereof. Further, whether or not the front surface of the front end portion 4 a of the blade 4 is curved is determined based on the plane 104 including the front end of the front surface of the blade 4 and the rotation shaft 101. Further, the crossing angle of the blade reference planes 102 of the two adjacent blades 4 is defined as a central angle θ between the two. In the present embodiment, this central angle is 180 degrees as described above. The rotary gate 3 is provided with a shaft 43 coaxially with the rotary shaft 101, and the shaft 43 is rotatably attached to the first and second walls 2 c and 2 d of the housing 2.

  The central portion of the third side wall 2e of the housing 2 has an arc shape toward the outside so as to have a very small distance from the rotation raceway surface of the rotary gate 3 (more precisely, the rotation raceway surface of the tip surface of the blade 4). It is curved. A guide convex portion 6 is formed on the inner surface immediately above the central portion of the third side wall 2f. The guide protrusion 6 extends over substantially the entire width of the third side wall 2 e, and the upper surface thereof is inclined obliquely downward and the lower surface thereof protrudes along the rotary track surface 103 of the rotary gate 3. .

  The fourth side wall 2 f of the housing 2 is inclined obliquely downward inward so that the upper portion 7 has an angle larger than the angle of repose, and the central portion thereof has a small distance from the rotating raceway surface 103 of the rotary gate 3. It is formed so as to be bent in an arc shape toward the outside and to be inclined obliquely downward inward so that its lower part has a repose angle.

  The upper opening 2a and the rotary gate 3 are configured such that the upper intersection point 210 between the center line 202 of the upper opening 2a in plan view (hereinafter referred to as a center line in plan view) 202 and the rotary raceway surface 103 of the rotary gate It is provided so as to have a positional relationship that deviates in a predetermined rotational direction from a vertical plane (hereinafter referred to as a rotation axis vertical reference plane) 201 that includes the same.

  The shaft 43 described above is connected to the main shaft of the drive motor 41. The drive motor 41 is composed of, for example, a stepping motor. The rotation of the drive motor 41 is controlled by the controller 42. The controller 42 is composed of an arithmetic unit such as a microcomputer.

  Next, the operation of the hopper device configured as described above will be described.

  2A and 2B are diagrams illustrating the operation of the hopper 1, wherein FIG. 2A is a diagram illustrating a state in which an object is received, FIG. 2B is a diagram illustrating a state in which the object is being discharged, and FIG. It is a figure which shows the state in the middle of transfering to the next cycle. FIG. 3 is a diagram showing a change pattern of the rotation speed with respect to the rotation angle in one cycle of the rotary gate.

  The following operation is performed by the controller 42 controlling the rotation of the drive motor 41.

  As shown in FIG. 2A, the controller 42 first stops any blade 4 at a predetermined receiving rotation position. Here, the receiving rotation position is set to a rotation position where the blades 4 face rearward and the blade reference surface 102 is horizontal. In this state, the object to be weighed 31 is introduced from the upper opening 2a. Then, the measurement object 31 falls and is received in the pocket 5 of the blade 4. In the present embodiment, since the center line 202 in plan view of the upper opening 2a is deviated in plan view with respect to the rotation shaft 101 that is the rotation center of the rotary gate 3, even if the receiving rotation position is set in this way, The blades 4 that receive the object to be weighed 31 inserted from the upper opening 2a and are positioned at the rotational position can be appropriately received in the pocket 5.

  Next, as shown in FIG. 2B, the controller 42 rotates the rotary gate 3 counterclockwise. As a result, when the blade 4 is rotated to a position near the position where the blade reference surface 102 is vertical, the measurement object 31 falls from the pocket 5 of the blade 4 and is discharged from the lower opening 2b. At this time, the other blade | wing 4 approaches the guide convex part 6 formed in the 3rd side wall 2e. The tip 4a of the other blade 4 is sharply pointed forward in the rotational direction, and the rotational track surface 103 of the blade tip 4b and the lower surface of the guide projection 6 are very close to each other. Even if the object to be weighed 31 adheres to the guide convex portion 6, the pointed portion A scrapes it off. In addition, even when the object to be weighed 31 is attached to the portion of the third side wall 2e along the rotary raceway surface 103 of the rotary gate, the pointed portion A of the tip portion 4a of the blade 4 scrapes it off. End up. For this reason, it can prevent that the to-be-measured object 31 is bitten between the blade | wing 4 and the 3rd side wall 2e. Further, when the specific gravity of the object to be weighed 31 is light, the object to be weighed 31 may float in the space near the stop of receiving, but this is knocked down by the front surface of the other blade 4. Thereby, the cut | disconnecting of the to-be-measured object 31 (separation for every batch) improves.

  Next, as shown in FIG. 2C, the controller 42 receives the other blade 4 and stops it at the rotational position. Thus, one cycle of charging and discharging the object to be weighed 31 is completed.

  In this cycle, for example, as shown in FIG. 3, the controller 42 rapidly increases the rotation speed of the rotary gate in the first predetermined period, then keeps it constant, and rapidly decreases in the last predetermined period. To change. Thereby, the fall of the objects to be weighed 31 of the next batch is promoted by the negative pressure due to the rotation of the blades 4 in the first predetermined period. Inhibition is suppressed. As a result, the movement of the object to be weighed 31 is accelerated, and the operation speed (measurement cycle) of the hopper device can be improved.

  Further, in the hopper device of the present embodiment, the object to be weighed 31 is received at the same height as the rotating shaft 101 of the blade 4 and rotates downward from that position, so that the object to be weighed 31 is centrifuged by the rotation of the blade 4. There is no power. As a result, the object to be weighed 31 is prevented from being pressed against the third side wall 2 e by centrifugal force and being caught between the blades 4. Further, since the rear surface of the blade 4 is curved and the object to be weighed 31 is accommodated in the pocket 5 surrounded by the curved surface, the opportunity for the object to be weighed 31 to contact the third side wall 2e is reduced. Accordingly, the biting of the weighing object 31 between the third side wall 2e and the blade 4 is reduced.

Next, a modification of the present embodiment will be described [Modification 1].
FIG. 4 is a longitudinal sectional view showing a configuration of a hopper device according to Modification 1 of the embodiment of the present invention.

  As shown in FIG. 4, in this modification, the rotary gate 3 has three blades 4. In this case, the central angle θ between adjacent blades 4 is 120 degrees. The rest is the same as the basic configuration of the present embodiment (FIG. 1). Also by this modification, the same effect as the basic configuration of the present embodiment can be obtained.

[Modification 2]
FIG. 5 is a longitudinal sectional view showing a configuration of a hopper device according to Modification 2 of the embodiment of the present invention.

  As shown in FIG. 5, in this modification, the rotary gate 3 has a blade 4 that is bent in a V shape in the rotational direction. The tip 4a of the blade 4 has the same shape as the blade 4 of FIG. The guide projection 6 is formed by bending the third side wall inward. The rest is the same as the basic configuration of the present embodiment. Also by this modification, the same effect as the basic configuration of the present embodiment can be obtained.

  In the configuration of FIG. 1, the guide convex portion 6 is formed by increasing the thickness of the third side wall 2 e, but it is needless to say that this may be formed by bending the third side wall 2 e inward. .

(Embodiment 2)
FIG. 6 is a schematic diagram showing the configuration of a combination weigher according to Embodiment 2 of the present invention.

  Referring to FIG. 6, the combination weigher 300 of the present embodiment includes a dispersion feeder 51, a supply hopper 53, a weighing hopper 54, a weight sensor 55, a collecting chute 56, a collecting hopper 57, and a controller 60. Are provided as main components.

  A dispersion feeder 51 is disposed at the center of the uppermost part of the combination weigher 300. The dispersion feeder 51 disperses the objects to be weighed 31 supplied from a supply unit (not shown) radially. The rectilinear feeders 52 are arranged in a plurality of circular shapes below the peripheral edge of the dispersion feeder 51, and transfer the dispersed objects to be weighed. The supply hopper 53 is arranged in a circle below the tip of the dispersion feeder 52 corresponding to the plurality of dispersion feeders 52, receives the objects to be weighed 31 dropped from the dispersion feeder 52, and divides them into batch units. To discharge. The weighing hopper 54 is disposed below the supply hopper corresponding to the supply hopper 53, receives the object to be measured 31 discharged from the supply hopper 53, measures it, and then discharges it. The weighing hopper 54 is supported by the weight sensor 55, and a detection signal of the weight sensor is input to the control device 60. The controller 60 is composed of a computing unit such as a microcomputer and controls the operation of the entire combination weigher. The collecting chute 56 is disposed below the weighing hopper 54, and the objects to be weighed discharged from the weighing hopper are collected in the collecting hopper disposed below the collecting chute 56. The collective hopper 57 discharges the collected objects 31 as one unit.

  In the combination weigher 300 of the present embodiment, the supply hopper 53 and the weighing hopper 54 are configured by the hopper device of the first embodiment including the first and second modifications. In the weighing hopper 54, both the hopper 1 and the drive motor 41 are supported by the weight sensor 55. Further, the controller 42 in FIG. 1 includes a controller 60.

  Next, the operation of the combination weigher 300 configured as described above will be briefly described. This operation is performed under the control of the controller 60.

  The objects to be weighed 31 supplied to the dispersion feeder 51 are distributed to the respective linear feeders 52 and supplied from there to the supply hopper 53 where they are divided into fixed amounts and discharged to the measurement hopper 54. The weight sensor 55 measures the object 31 discharged to the weighing hopper 54 and inputs the measured value to the controller 60. The controller 60 selects an optimum combination from predetermined combinations of measurement values corresponding to all the weighing hoppers 54, and causes the weighing hopper 54 corresponding to the selected measurement values to discharge the object to be weighed. As a result, the discharged objects to be weighed 31 gather in the collecting hopper 57 and are discharged from the collecting hopper 57 as one unit of the objects to be weighed 31 satisfying the target weight.

  Next, operations of the supply hopper 53 and the weighing hopper 54 will be described in detail.

  FIGS. 7A to 7C are views showing the operation of the supply hopper and the weighing hopper of the combination weigher of the present embodiment.

  As shown in FIG. 7A, at a certain timing, the rotary gate 3 of the supply hopper 53 and the rotary gate 3 of the weighing hopper 54 are both stopped at the receiving rotation position. From this state, the rotary gate 3 of the weighing hopper 54 discharges the object 31 as shown in FIG. Thereafter, as shown in FIG. 7C, the rotary gate 3 of the weighing hopper 54 stops at the receiving rotation position, and the rotary gate 3 of the supply hopper 53 discharges the object 31 to be weighed.

  This speeds up the weighing cycle as compared with the case where an openable gate is employed, and prevents the object 31 from being bitten.

  Next, Modification 3 and Modification 4 of the embodiment of the present invention will be described.

[Modification 3]
FIG. 8 is a longitudinal sectional view showing the configuration of the supply hopper and the weighing hopper of the combination weigher according to the third modification of the embodiment of the present invention.

  As shown in FIG. 8, in this modification, the hopper device constituting the weighing hopper 54 is set to face the opposite direction to the hopper device constituting the weighing hopper 54 of FIG. The rotary gate 3 and the rotary gate 3 of the weighing hopper 54 rotate in opposite directions. Even if comprised in this way, the effect similar to the above-mentioned case is acquired.

[Modification 4]
FIG. 9 is a longitudinal sectional view showing configurations of a supply hopper and a weighing hopper of the combination weigher according to the modification 4 of the embodiment of the present invention.

As shown in FIG. 9, in this modification, the receiving rotation position of the weighing hopper 54 is lowered (advanced) from the horizontal position by a predetermined rotation angle θ ₀ instead of the horizontal position as in the weighing hopper of FIG. 7. Set to position. With this setting, the collective hopper can be moved toward the center of the combination weigher 300 (however, this is not done in FIG. 9 for easy understanding).

(Embodiment 3)
FIG. 10 is a longitudinal sectional view showing the configuration of the supply hopper and the weighing hopper of the combination weigher according to Embodiment 3 of the present invention.

  This embodiment exemplifies a combination weigher for powder measurement. In the present embodiment, since the object to be weighed 32 is powder, a screw feeder 58 is used in place of the linear feeder 52 of FIG. Between the screw feeder 58 and the supply hopper 53, a chrysanthemum 59 is disposed. Further, as measures against dust, the airtightness between the components is enhanced, and an air deaeration pipe is connected to the lower opening of the weighing hopper 54.

  The hopper device 1 according to the first embodiment is suitable for powder measurement because of its high airtightness. With such a configuration, the powder can be appropriately measured at high speed.

(Embodiment 4)
11A and 11B are diagrams showing a configuration of a hopper device according to Embodiment 4 of the present invention, in which FIG. 11A is a perspective view showing an appearance of the hopper device, and FIG. 11B is a sectional view showing a longitudinal section of the hopper device. is there. In FIG. 11A, the housing 2 and the side walls 72, 72 of the rotary hopper 71 are indicated by phantom lines (two-dot chain lines) so that the partition member 73 of the rotary hopper 71 can be easily seen.

  As shown in FIG. 11, the hopper device of the present embodiment is configured such that a rotary hopper 71 is accommodated in a housing 83.

  The rotary hopper 71 has a configuration in which a pair of disk-shaped side walls are disposed on both side surfaces of the rotary gate 3 of FIG. Specifically, the rotary hopper 71 is sandwiched between a pair of disk-shaped side walls 72 and 72 that are coaxial with the virtual horizontal rotating shaft 101 and are parallel to each other, and the pair of side walls 72 and 72. An impeller-like partition member 73 having a plurality of (here, two) blades 74 extending radially from the rotating shaft 101 to the outer periphery of the side wall 101 with a uniform central angle. The shape of the partition member 73 is exactly the same as that of the rotary gate 3 of FIG.

  The housing 83 has flat first and second side walls 83c and 83d that face each other in parallel and extend in the vertical direction, and ridge lines that face each other and are perpendicular to the first and second side walls 83c and 83d. It has the 3rd and 4th side wall 83e and 83f which touches so that it may form, and is formed in the cylinder shape which has the upper opening 83a and the lower opening 83b at the upper end and the lower end, respectively. A pair of circular side openings 83g are formed in the mutually opposing portions of the first and second side walls 83c, 83d of the housing 83, and the pair of side walls 72, 72 are formed in the pair of side openings 83g. A rotary hopper 71 is disposed so as to be loosely fitted.

  As in the hopper device of FIG. 1, the upper opening 83 a has an upper intersection (not shown) between a center line (not shown) in plan view and a rotation track surface (not shown) of the tip surface of the blade of the rotary hopper 71. ) Are arranged so as to be deviated from the rotation axis vertical reference plane 201 in the rotation direction. Further, a guide projection 86 is provided on the third side wall as in FIG.

  In the hopper device configured as described above, the blades 74 of the rotary hopper 71 receive the object to be weighed 31 introduced from the upper opening 83a in the pocket 75 at the receiving rotation position, and further rotate from the pocket 75, whereby the pocket The object to be weighed 31 falls from 75. The dropped measurement object 31 is discharged from the lower opening 83 b of the housing 83.

  The effect similar to the hopper apparatus of Embodiment 1 is acquired also by this hopper apparatus.

(Embodiment 5)
12A and 12B are diagrams showing a configuration of a hopper device according to Embodiment 5 of the present invention, in which FIG. 12A is a perspective view showing an appearance of the hopper device, and FIG. 12B is a cross-sectional view showing a longitudinal section of the hopper device. is there. In FIG. 12A, the guides 81 and 82 and the side walls 72 and 72 of the rotary hopper 71 are indicated by phantom lines (two-dot chain lines) so that the partition member 73 of the rotary hopper 71 can be easily seen.
The housing 2 is indicated by a virtual line (two-dot chain line) so that the rotary hopper 71 can be easily seen.

  As shown in FIG. 12, the hopper device according to the present embodiment is different from the hopper device according to the fourth embodiment in that guides 81 and 82 are provided in place of the housing 83. The same.

  The upper guide 81 is disposed above the rotary hopper 71 and forms a pair of flat side walls facing each other in parallel and extending in the vertical direction and facing each other to form a ridge line substantially perpendicular to the pair of side walls. And a pair of side walls in contact with each other, and is formed in a cylindrical shape having an upper opening and a lower opening at the upper end and the lower end, respectively. The lower guide 82 is disposed below the rotary hopper 71 and is formed in a cylindrical shape having a quadrangular cross section. In short, the upper guide 81 and the lower guide 82 have the same shape as the upper part and the lower part of the housing 83 of the fourth embodiment, respectively, and a detailed description thereof will be omitted.

  The effect similar to that of the hopper device of the first embodiment can be obtained by the hopper device of the present embodiment configured as described above.

(Embodiment 6)
13A and 13B are diagrams showing a configuration of a hopper device according to Embodiment 6 of the present invention, in which FIG. 13A is a perspective view showing an appearance of the hopper device, and FIG. 13B is a cross-sectional view showing a longitudinal section of the hopper device. is there.

  As shown in FIG. 13, the present embodiment is different from the fourth embodiment in that the housing 83 is omitted and the shape of the rotary hopper 71 is slightly different, and the other points are the same.

  In the present embodiment, the rotary hopper 71 has a front end 74 of the partition member 73 extending in a plate shape on both sides in the rotational direction along the outer circumferences of both side walls 72 and 72. As a result, the rotary hopper 71 has a container shape as a whole, and has a shape in which an opening 91 is formed corresponding to each blade 74. The rotary hopper 71 receives and discharges the object 31 through the opening 91. The extension parts 74a and 74b prevent the object 31 from spilling out of the pocket 75 during rotation. Further, the spilled object 31 is prevented from being caught between other members.

  Even with this configuration, the same effect as in the fourth embodiment can be obtained.

  Needless to say, the supply hopper 53 and the weighing hopper 54 according to the second embodiment may be configured by the hopper device according to the third to sixth embodiments.

  Further, in the second embodiment, only one of the supply hopper 53 and the weighing hopper 54 may be configured by the hopper device of the first and third to sixth embodiments.

  The hopper device of the present invention is useful for the application of a combination weigher designed to increase the speed.

  The combination weigher of the present invention is useful as a combination weigher designed to increase the speed.

It is a figure which shows the structure of the hopper apparatus which concerns on Embodiment 1 of this invention, Comprising: (a) is a perspective view which shows the external appearance of a hopper apparatus, (b) is sectional drawing which shows the longitudinal cross-section of a hopper apparatus. It is a figure which shows operation | movement of a hopper, (a) is a figure which shows the state which received the to-be-measured object, (b) is a figure which shows the state which has discharged | emitted to-be-measured object, (c) is the next cycle. It is a figure which shows the state in the middle of transfer. It is a figure which shows the change pattern of the rotational speed with respect to the rotation angle in 1 cycle of a rotary gate. It is a longitudinal cross-sectional view which shows the structure of the hopper apparatus which concerns on the modification 1 of embodiment of this invention. It is a longitudinal cross-sectional view which shows the structure of the hopper apparatus which concerns on the modification 2 of embodiment of this invention. It is a schematic diagram which shows the structure of the combination scale which concerns on Embodiment 2 of this invention. FIGS. 7A to 7C are views showing the operation of the supply hopper and the weighing hopper of the combination weigher of the present embodiment. It is a longitudinal cross-sectional view which shows the structure of the supply hopper and weighing hopper of the combination weigher which concern on the modification 3 of embodiment of this invention. It is a longitudinal cross-sectional view which shows the structure of the supply hopper of the combination scale which concerns on the modification 4 of embodiment of this invention, and a measurement hopper. It is a longitudinal cross-sectional view which shows the structure of the supply hopper and weighing hopper of the combination weigher which concern on Embodiment 3 of this invention. It is a figure which shows the structure of the hopper apparatus which concerns on Embodiment 4 of this invention, Comprising: (a) is a perspective view which shows the external appearance of a hopper apparatus, (b) is sectional drawing which shows the longitudinal cross-section of a hopper apparatus. It is a figure which shows the structure of the hopper apparatus which concerns on Embodiment 5 of this invention, Comprising: (a) is a perspective view which shows the external appearance of a hopper apparatus, (b) is sectional drawing which shows the longitudinal cross-section of a hopper apparatus. It is a figure which shows the structure of the hopper apparatus which concerns on Embodiment 6 of this invention, Comprising: (a) is a perspective view which shows the external appearance of a hopper apparatus, (b) is sectional drawing which shows the longitudinal cross-section of a hopper apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hopper 2 Housing 3 Rotary gate 4 Blade | tip 4a Tip part 5 Pocket 6 Guide convex part 7 Upper part 31 and 32 of 4th side wall 41 Measurement object 41 Drive motor 42 and 60 Controller 43 Shaft 51 Dispersion feeder 51
52 Linear feeder 53 Supply hopper 54 Weighing hopper 55 Weight sensor 56 Collecting chute 57 Collecting hopper 58 Screw feeder 59 Kikusa 71 Rotary hopper 72 Side wall 73 Partition member 74 Blade 75 Pocket 81 Upper guide 82 Lower guide 83 Housing 86 Guide convex 91 Opening 101 Rotating shaft 102 Blade reference surface 103 Rotary raceway surface 104 of the rotary gate Flat surface 201 including the front end of the blade and the rotating shaft Rotating shaft vertical reference surface 202 Plane centerline 300 Combination scale

Claims (7)

Third and second flat plate-like first and second side walls facing each other in parallel and extending in the vertical direction are opposed to each other so as to form a ridge line substantially perpendicular to the first and second side walls. A cylindrical housing having an upper opening and a lower opening at the upper end and the lower end, respectively, and a virtual rotation axis perpendicular to the first and second side walls inside the housing. An impeller-shaped rotary having a plurality of blades that are arranged so as to be rotatable with a predetermined gap from the first to fourth side walls and extend radially from the rotation shaft with a uniform central angle. A hopper having a gate;
A rotating device that rotates the rotary gate about the rotation axis;
Each of the blades has a uniform cross-sectional shape in the extending direction of the rotation shaft, a rear surface in a predetermined rotation direction is recessed in the predetermined rotation direction, and a tip surface of the blade substantially extends the rotation shaft. A part of a cylindrical surface as a center is formed, and the front surface in the predetermined rotation direction of the tip is formed so as to be recessed in the direction opposite to the predetermined rotation direction,
In addition, the upper opening has an upper intersection point between a center line in plan view (hereinafter referred to as a center line in plan view) and a rotation orbital surface of the tip surface of the blade of the rotary gate from a vertical plane including the rotation axis. A hopper device disposed so as to be biased in the predetermined rotation direction.   The side wall of the third and fourth side walls that is closer to the center line in plan view of the upper opening extends over substantially the entire width of the side wall, and the upper surface thereof is inclined obliquely downward and the lower surface thereof. The hopper device according to claim 1, wherein a guide convex portion that protrudes inward is formed so as to be along the rotation track surface of the tip surface of the blade.   The plurality of blades of the rotary gate are sequentially rotated at a rotational position (hereinafter referred to as blade reference surface) in which the rear surface of the blade faces upward and the plane including the tip of the rear surface and the rotation axis (hereinafter referred to as blade reference surface) is substantially horizontal. , Receiving the measured object thrown in from the upper opening, and then rotating and moving in the predetermined direction to discharge the received measured object toward the lower opening. The hopper device according to claim 1, further comprising a controller that rotates the rotary gate by the rotating device. A pair of disk-shaped side walls that are concentrically opposed to and parallel to the virtual horizontal rotation axis, and are sandwiched between the pair of side walls and radially centered from the rotation axis with a uniform central angle. A rotary hopper having an impeller-shaped partition member having a plurality of blades extending so as to reach the outer periphery;
A rotary device that rotates the rotary hopper about the rotary shaft;
Each of the blades has a uniform cross-sectional shape in the extending direction of the rotation shaft, a rear surface in a predetermined rotation direction is recessed in the predetermined rotation direction, and a tip surface of the blade has substantially the rotation shaft. A hopper device which constitutes a part of a cylindrical surface as a center and is formed such that a front surface in a predetermined rotation direction of a tip portion thereof is recessed in a direction opposite to the predetermined rotation direction. Third and second plate-like first and second side walls facing each other in parallel and extending in the vertical direction are opposed to each other so as to form a ridge line substantially perpendicular to the first and second side walls. And a cylindrical housing having an upper opening and a lower opening at the upper end and the lower end, respectively.
A pair of circular side openings are formed in the mutually opposing portions of the first and second side walls of the housing, and the pair of side walls are loosely fitted into the pair of side openings. Is arranged,
The upper opening has an intersection point on the upper side between a center line in plan view (hereinafter referred to as a center line in plan view) and a rotation track surface of a tip surface of the blade of the rotary hopper from a vertical plane including the rotation axis. The hopper device according to claim 4, wherein the hopper device is arranged so as to be biased in a predetermined rotation direction.
A ridge line that is disposed above the rotary hopper and that is opposed to each other in parallel and extends in the vertical direction is opposed to the first and second side walls that are substantially perpendicular to the first and second side walls. A cylindrical upper guide having third and fourth side walls in contact with each other and having an upper opening and a lower opening at the upper end and the lower end, respectively, and a rectangular cross section disposed below the rotary hopper. A cylindrical lower guide having
The upper guide is formed such that the lower opening is along the rotation track surface of the rotary hopper, and the upper intersection of the center line in the plan view of the lower opening and the rotation track surface of the rotary hopper is the rotation Arranged so as to deviate in a predetermined rotational direction from a vertical plane including an axis;
The hopper device according to claim 4, wherein the lower guide is formed so that an opening at an upper end thereof is along a rotation track surface of the rotary hopper.   A combination weigher comprising the hopper device according to claim 1 as at least one of a supply hopper and a weighing hopper.

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