JP2014145741A - Combination weighing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combination weighing apparatus capable of efficiently supplying articles from a dispersion table to troughs regardless of characteristics (such as size, softness and stickiness) of the articles.SOLUTION: A combination weighing apparatus 1 includes a table 20 and an annular conveyance part 30 for receiving articles having fallen down from the outer peripheral edge of the table and conveying the articles outside in a radial direction. The annular conveyance part includes plural troughs 32 disposed radially around a central axis and plural guide parts 42 for guiding the articles supplied from the table to the plural troughs. The guide parts each include a roller 76 supported rotatably so as to guide the articles to each trough. With this configuration, the articles having fallen down from the table are guided by each roller and properly divided into the troughs at both sides of the roller without remaining between adjacent troughs.

Description

  In the present invention, each of an individual article or a lump of articles is weighed by a plurality of measuring instruments, and a plurality of combination weighing values are calculated by combining these weighing values with a computer, and the most set weight among the combination weighing values is obtained. The present invention relates to a combination weighing device that selects a near combination.

  Patent Document 1 discloses a combination weighing device. This weighing device includes a dispersion table having a conical surface that is tapered upward about a central axis in the vertical direction. Around the dispersion table, a plurality of troughs extending radially from the central axis at regular intervals in the circumferential direction are arranged below the dispersion table. Each trough contains a helical coil coaxially. Each coil has an inner end on the central axis side connected to a rotational drive source, and rotates about the central axis of the coil. A plurality of pool hoppers are arranged at equal intervals around the central axis below the outer ends of the plurality of troughs. A plurality of weighing hoppers are arranged at equal intervals around the central axis below the plurality of pool hoppers. Further, a collecting chute is disposed below the weighing hopper.

  According to the weighing device configured as described above, the articles dropped and supplied onto the dispersion table are fed radially outward on the dispersion table by vibration applied to the dispersion table or rotation of the dispersion table, and the outer peripheral edge thereof. Is supplied to a plurality of troughs. The articles supplied to each trough are sent radially outward along the trough based on the rotation of the coil, and dropped and supplied to the pool hopper from the opening at the outer end. Also, the items in the pool hopper are dropped and supplied to the corresponding weighing hopper. Articles stored in the weighing hopper are weighed, and a plurality of combination weighing values are calculated by combining the weighing values by a computer. Then, the combination closest to the set weight is selected from the combination weighing values, and articles are dropped and supplied from the plurality of weighing hoppers corresponding to the selected combination to the collecting chute.

JP 2009-270986 A

  The present invention improves the above-described combination weighing device, and is a new type combination weighing device that can efficiently supply articles from a dispersal table to a trough regardless of the characteristics (size, softness, adhesiveness, etc.) of the articles. The purpose is to provide.

In order to achieve this object, the combination weighing device according to the present invention provides:
a) a central axis in the vertical direction;
b) a table that receives articles supplied from above and distributes them radially outward of the central axis;
c) An annular conveying unit that receives the article dropped from the outer peripheral edge of the table and conveys the article outward in the radial direction,
A groove extending from the central axis in the radial direction and arranged at a predetermined interval around the central axis and between the pair of radial edges extending in the radial direction and the pair of radial edges and recessed downward Having a plurality of troughs formed by
d) a plurality of guide portions for guiding the articles supplied from the table to the plurality of troughs;
Each of the plurality of guide portions includes a pair of guide walls that guide the article along adjacent troughs on both sides, a corner portion that connects radially inner ends of the pair of guide walls, and A roller that is radially inward and rotatably supported to guide the article to the adjacent troughs on both sides;
e) a plurality of conveying members disposed on each of the plurality of troughs, for conveying the article supplied from the table radially outward along the troughs and dropping from the outer peripheral end of the troughs;
f) a plurality of pool hoppers disposed below the annular portion and receiving the articles dropped from the outer peripheral ends of the plurality of troughs;
g) A plurality of weighing hoppers respectively disposed below the plurality of pool hoppers.

In this combination weighing apparatus, it is preferable that the roller is supported so as to be rotatable about an axis having directional components in the vertical direction, the radial direction, or both.
Further, the combination weighing device has a frame portion that is inside the annular conveyance portion and supports the dispersion table. One end of the roller shaft is supported by the guide portion, and the other end is the annular conveyance. It is preferably supported by the part or the frame part.
Further, the annular transport portion is disposed between troughs adjacent in the circumferential direction, and has a connecting portion that connects one radial edge and the other radial edge of the adjacent troughs, and the guide portion includes It is preferable that it is detachably provided on the connecting portion.
Furthermore, it is preferable that a gap is formed between the roller and the corner portion. This gap preferably has a size of 1 to 5 mm.

  According to the combination weighing device according to the present invention, articles dropped from the dispersion table are guided by each roller and appropriately distributed to the troughs on both sides thereof without staying between adjacent troughs. In particular, even a highly sticky article (for example, raw meat) is well guided to each trough.

  Embodiments of a combination weighing device according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 shows an embodiment of a combination weighing device (hereinafter referred to as “weighing device”) 1 according to the present invention. The weighing device 1 has a frame 10 that supports various configurations described below. The frame 10 includes a lower frame portion 11 and an upper frame portion (shown in FIG. 3) supported by the lower frame portion 11. Referring to FIG. 3, the upper frame portion 12 includes three cylindrical portions—a lower cylindrical portion 14, an intermediate cylindrical portion 15, and an upper cylindrical portion centered on a vertical axis (hereinafter referred to as “center axis”) 13. 16 and an upper cylinder portion 16 supports a dispersion table 20 (see FIGS. 1, 2 and 4) thereon.

  Referring to FIG. 1, the dispersion table 20 has a conical upper surface, and a rotation shaft 18 (not shown) extending in the vertical direction along the central axis 13 around the central axis 13 around the central axis 13. (See FIG. 7). The rotating shaft 18 is drivingly connected to a motor 23 (FIGS. 1 and 7). Therefore, the dispersion table 20 can rotate at a constant speed in the direction of the arrow 24 based on the drive of the motor 23. In the embodiment, the upper surface of the dispersion table 20 includes an upper conical surface 21 and a lower conical surface 22, and the apex angle of the upper conical surface 21 is smaller than the apex angle of the lower conical surface 22.

  As shown in FIGS. 2 and 4, an annular conveyance unit 30 is disposed around the upper cylinder unit 16 under the dispersion table 20. The annular conveyance unit 30 has an annular trough plate 31. As shown in FIGS. 3 to 6, the trough plate 31 has the center aligned with the central axis 13, and the middle tube portion 15, specifically, the upper annular plate 17 of the middle tube portion 15 (see FIG. 3). ) Removably fixed on the top. The inner diameter of the trough plate 31 is substantially equal to the outer diameter of the upper cylindrical portion 16, but is smaller than the outer diameter of the dispersion table 20. Therefore, when viewed from above, the inner peripheral end of the trough plate 31 is hidden under the dispersion table 20 (see FIG. 4).

  Referring to FIGS. 3 to 7, particularly FIG. 5, the trough plate 31 has a plurality (14 in the embodiment) of radial troughs from the central axis 13 and spaced apart in the circumferential direction around the central axis 13. A trough 32 is formed. Each trough 32 is formed by a pair of edges 33 extending in the radial direction and a concave groove 34 positioned between the edges 33. In the embodiment, the inner surface of the groove 34 forms a part of a cylindrical surface having a predetermined inner diameter centering on the trough central shaft 35 (see FIG. 4) inclined downward from the inner side to the outer side in the radial direction.

  In the embodiment, the trough plate 31 is provided between adjacent troughs 32, and has a connecting portion 36 that connects one edge 33 of one trough 32 and the other edge 33 of the other trough 32. Have. When viewed from above, the connecting portion 36 has a wedge shape that tapers inward in the radial direction. As best shown in FIG. 5, the connecting portion 36 is on the radial center line (not shown) from the upper surface. A plurality of engaging portions or raised portions (boss portions) 37 (371, 372, 373) protruding upward are formed. In the embodiment, one raised portion 373 is formed on the outer side in the radial direction, and two raised portions 371 and 372 are formed on the inner side in the radial direction. In the embodiment, the raised portion 37 has a cylindrical shape, and has a circular shape when viewed from above.

  As shown in FIG. 7, the upper cylinder portion 16 is formed as a polygonal cylinder having a number of vertical wall portions 39 corresponding to the number of troughs 32, and the trough plate 31 is formed at the inner end of each trough 32. The part is fixed to face each vertical wall 39. As shown in FIGS. 4 and 7, a coil unit 38 is disposed in each trough 32. The coil unit 38 is connected at its radially inner end to a rotational drive unit 60 (see FIG. 8) provided behind the corresponding vertical wall 39. The central axis of the coil unit 38 is the trough central axis 35. The coil 102, which will be described later, is rotated in a state where it substantially coincides with.

As shown in FIG. 8, the coil unit 38 includes a coil holder 101 and two helical coils 102 supported by the coil holder 101. The coil holder 101 is inserted into the three portions arranged coaxially and fixed, that is, the hollow cylindrical male connector portion 103 and the male connector portion 103, and is connected to the male connector 103 via a bearing mechanism (not shown). The shaft portion 104 is rotatably supported, and the connector ring 105 is fixed around the male connector 103. The shaft portion 104 has a drive connection structure 106 at one end (a radially inner end with respect to the central shaft 13), and a coil support portion 107 at the other end (a radially outer end with respect to the central shaft 13). As shown in FIGS. 9 (a) and 9 (c), in the embodiment, the connector ring 105 is formed on four virtual circles 108 having a predetermined diameter and formed at intervals of 90 degrees in the circumferential direction. A pin insertion hole 109 is provided. The pin insertion hole 109 has a circular opening 110 and a long hole 111 having a width smaller than the inner diameter of the circular opening 110 and extending in one circumferential direction. Returning to FIG. 8, in the embodiment, the two helical coils 102 are also coaxial with the central axis of the coil holder 101 and shifted by 180 degrees with respect to the central axis. It is fixed.

  The rotation drive unit 60 that transmits rotation to the coil unit 38 has a drive shaft 112. The drive shaft 112 is rotatably supported by a support structure 113 fixed to the back of the vertical wall portion 39 in a state where its central axis coincides with the trough central axis 35. A radially outer end portion of the drive shaft 112 has a drive connection structure 114 having a size and shape complementary to the drive connection structure 106 of the shaft portion 104 described above. On the other hand, the proximal end portion on the radially inner side of the drive shaft 112 supports the pulley 115. The pulley 115 is connected to the motor 116 via a belt (not shown). The support structure 113 supports a hollow cylindrical female connector 117 disposed coaxially with the trough central shaft 35 and surrounding the drive connection structure 114. The radially outer end of the female connector 117 protrudes outside the vertical wall 39 through an opening 40 (see FIG. 3) formed in the vertical wall 39, and the ring plate 118 is fixed thereto. . As shown in FIGS. 9B and 9D, the ring plate 118 is 90 degrees in the circumferential direction on a virtual circle 119 centered on the trough central axis 35 and having the same diameter as the virtual circle 108 described above. Four pins 120 are supported at intervals.

  Accordingly, as shown in FIG. 8, the coil unit 38 includes a male connector 103 inserted into the female connector 117 to connect the drive connection structure 106 of the coil unit 38 to the drive connection structure 114 of the drive unit 60 and a connector ring. By inserting the pin 120 into the pin insertion hole 109 of 105, the drive unit 60 is detachably connected.

  Returning to FIG. 1, the annular conveyance unit 30 includes an annular guide ring 41 that surrounds the dispersion table 20. 10 to 15 show the guide ring 41 of the first embodiment. The guide ring 41 has a plurality of guide blocks (guide portions) 42 corresponding to the number of troughs 32 formed at regular intervals in the circumferential direction around the central axis 13. As shown in the figure, each guide block 42 is in the form of a cake piece obtained by cutting a circular cake along a plurality of radial lines, and tapers inward in the radial direction when viewed from above. Appears in a wedge shape.

As shown in FIGS. 10 and 11, each guide block 42 has left and right side walls 43 in the radial direction. The left and right side walls 43 are connected at the radially inner end by a corner portion 44 and at the radially outer end by an outer peripheral wall 45. In the embodiment, the corner portion 44 is formed as a cylindrical surface obtained by bending a plate (usually a stainless plate) forming the left and right side walls 43 into a curved shape.

  The angle θ1 (see FIG. 12) between the left and right side walls 43 is equal to the angle θ2 (see FIG. 5) between the radial edges (edges 33) of the connecting portions 36 in the trough plate 31 described above. Accordingly, as shown in FIG. 1, with the guide block 42 placed on the connecting portion 36 of the trough plate 31, the side wall 43 extends upward from the trough edge 33 with its lower end aligned with the trough edge 33. An article guide passage 46 (see FIG. 1) is formed above 32.

  In the embodiment, each guide block 42 has a ceiling wall 47 and a bottom wall 48. Three engaging portions or concave portions 49 (491, 492, 493) are formed in the bottom wall 48. The size, shape, and position of the three concave portions 49 (491, 492, 493) correspond to the size, shape, and position of the raised portion 37 (371, 372, 373) of the trough plate connecting portion 36 described above. Yes. Therefore, in a state where each guide block 42 is placed on the trough plate connecting portion 36, the three raised portions 37 (371, 372, 373) fit into the corresponding three concave portions 49 (491, 492, 493), and the trough plate The guide block 42 is correctly positioned with respect to 31.

  The inner diameter of the guide ring 41, that is, the diameter of a virtual circle (not shown) in contact with the inner end of each guide block 42 is larger than the outer diameter of the dispersion table 20. The height of each guide block 42 is determined so that the guide block 42 protrudes upward from the outer peripheral edge of the dispersion table 20 by a predetermined distance in a state where the guide block 42 is placed on the trough plate connecting portion 36. ing. This distance can be appropriately determined depending on the properties (size, etc.) of the articles to be weighed by the weighing device 1.

  In the embodiment, adjacent guide blocks 42 are connected to each other by a bridge 50. In the embodiment, the guide ring 41 is divided into two segments 52 at the position of the dividing line 51 shown in FIG. Therefore, the two segments 52 are separately assembled on the guide ring 41 during assembly. Naturally, the segment 52 assembled on the guide ring 41 can be detachably fixed by a fixing means (for example, a bolt) as necessary.

  Returning to FIGS. 1 and 2, a plurality of pool hoppers 61 are arranged below the annular conveyance unit 30 so as to correspond to the plurality of troughs 32. A plurality of corresponding weighing hoppers 62 are disposed under the plurality of pool hoppers 61. Each weighing hopper 62 is provided with a weighing device (for example, a load cell) that measures the weight (mass) of an article accommodated in the weighing hopper 62. Further, a plurality of booster hoppers (auxiliary hoppers) 63 are disposed below the plurality of weighing hoppers 62. A collecting chute 64 is disposed under the plurality of booster hoppers 63. In the embodiment, 14 pool hoppers 61, weighing hoppers 62, and booster hoppers 63 are provided corresponding to the number of troughs 32.

  According to the weighing device 1 configured as described above, an article to be weighed (for example, food such as raw meat) is dropped and supplied from above the dispersion table 20 to the center of the dispersion table 20. The dispersion table 20 is rotated in the direction of the arrow 24 based on the driving of the motor 23, and the dropped articles are dispersed radially outward in the radial direction and discharged from the outer peripheral edge of the dispersion table 20.

  The articles discharged from the dispersion table 20 are dispersed and supplied to the plurality of troughs 32. At this time, the articles released between the adjacent troughs 32 are distributed to the left or right trough 32 by the guide block 42. As shown in the drawing, since the inner end (corner portion 44) of the guide block 42 has a smooth cylindrical surface, the guide block 42 is distributed to the right and left without being caught by the inner end. The height of the guide block 42 is determined so as to protrude upward from the outer peripheral edge of the dispersion table 20 in a state where it is placed on the trough plate 31. For example, when the article is a chunk of meat with bone, the height of the guide block 42 is determined so as to protrude about 10 cm from the outer peripheral edge of the dispersion table 20. Therefore, the articles discharged from the dispersion table 20 are supplied to the trough and the article guide passage 46 connected to the trough and the upper side.

  The articles supplied to each trough 32 are conveyed toward the outside in the radial direction by the coil 102 that rotates about the shaft 35 based on the rotation of the motor 116 that intermittently drives the articles in the trough 32 and the article guide passage 46. Is done. The rotation amount or rotation time of each coil 102 is controlled by a control device (not shown).

  The article conveyed through the trough 32 and the article guide passage 46 by the rotation of the coil 102 falls from the openings of the trough 32 and the article guide passage 46, is accommodated in the corresponding pool hopper 61, and is temporarily held there. Thereafter, the articles discharged from the pool hopper 61 are supplied to the corresponding weighing hopper 62 and temporarily held therein, and the weight is measured by the weighing device. The booster hopper 64 temporarily holds the articles discharged from the weighing hopper 62. Of all the weighing hoppers 62 and booster hoppers 64 that contain articles, a combination of hoppers that achieves a weight value that matches or is closest to the target weight is obtained by calculation of a computer and selected one or The articles in the plurality of hoppers are discharged from the collecting chute 64. The articles collected in the collecting chute 64 are discharged toward a downstream device (not shown).

  As described above, according to the weighing device 1 of the above-described embodiment, the articles discharged from the dispersion table 20 are guided to the guide block 42 and supplied to one of the trough 32 and the article guide passage 46 on both sides thereof. , It will not stay between adjacent troughs.

  A plurality of types of guide blocks 42 and guide rings 41 are prepared so that appropriate items can be selected depending on the articles handled by the weighing device 1. For example, a plurality of guide blocks having different lengths in the radial direction or guide links provided with such guide blocks are prepared. Specifically, FIGS. 14 and 15 show a guide ring and a guide block of a second form different from the guide block 42 and the guide ring 41 of the first form. In the guide ring 41 ′ and the guide block 42 ′ of the second embodiment, the radial length of the guide block 42 ′ is shorter than the guide block 42 of the first embodiment. Accordingly, the bottom wall 48 ′ of the guide block 41 ′ has the outermost part 492 and the outermost part of the three recessed parts 491, 492, 493 formed on the bottom wall 48 of the first form guide block 42. Only two concave portions 492 ′ and 493 ′ corresponding to the concave portion 493 are formed. Therefore, the guide block 42 ′ is positioned with respect to the trough plate 31 by fitting these two concave portions 492 ′ and 493 ′ to the corresponding raised portions 372 and 373.

  As described above, the only difference between the guide blocks of the first and second embodiments is the length in the radial direction, and the angle between the left and right side walls 42 is the same. Therefore, even if the guide block is replaced, a wall extending upward from the edge 33 of the trough 32 is formed on the trough 32 by the side wall 43. Further, the gap formed between the inner end portion (corner portion 44 ′) of the guide block 42 ′ and the outer peripheral edge of the dispersion table 20 is larger than the gap formed in the first embodiment. For an article requiring a gap, the guide block of the second form is used rather than the first form.

  In the above description, the annular conveyance unit 30 is configured by the trough plate 31 and the guide block 42 or the guide ring 41 so that the guide block 42 and the guide ring 41 can be attached to and detached from the trough plate 31. Further, the coil unit 38 is detachably attached to the rotation drive unit 60 provided on the frame 10 of the weighing device 1. Therefore, the trough 32, the article guide passage 46, and the coil 102 can be cleaned very easily. Further, the guide block 42, the guide ring 41, and the coil 102 can be replaced easily and in a short time. Furthermore, the guide block most suitable for the property (size, shape, adhesiveness) of the article can be selected and the article can be conveyed stably.

  A roller is arranged on the radially inner side of the radially inner end corner portion 44 in the guide block, and the article can be guided left and right by this roller. In this embodiment, as shown in FIGS. 16 and 17, the radially inner end portion of the guide block 42 ″ is a concave cylindrical surface having a predetermined diameter centering on the vertical axis 71 passing through the center of the innermost concave portion 491 described above. 72. The radially inner end of the bottom wall 48 "ends with a concave cylindrical surface 72. On the other hand, it protrudes inward beyond the concave cylindrical surface 72 of the radially inner end of the ceiling wall 47 ″, and an opening (upper end support portion) 74 centering on the vertical axis 71 is formed in the protrusion 73. The upper end of the roller support shaft 75 is inserted and fixed in the opening 74. For example, the upper end of the support shaft 75 is inserted into the opening 74 from below, and a retaining mechanism (not shown) (for example, the support shaft, for example). The outer diameter of the support shaft 75 is smaller than the diameter of the concave cylindrical surface 72. The length of the support shaft 75 is as follows. As shown in FIG. 16, with the guide block 42 placed on the trough plate connecting portion 36, the lower end of the support shaft 75 attached to the guide block 42 ″ just contacts the innermost raised portion (lower end support portion) 371. Or contact Not be determined so.

The roller 76 is formed of a cylinder having an inner diameter slightly larger than the outer diameter of the support shaft 75 and a radius smaller than the distance from the vertical shaft 71 to the concave cylindrical surface 72. The axial length of the roller 76 is substantially the same as or slightly shorter than the support shaft 75. Before the guide ring 41 is mounted on the trough plate 31, the roller 76 configured as described above stands on the trough plate 31 by inserting a raised portion (lower end support portion) 373 at the lower end of the roller 76, and from this state, The guide ring 41 is put on the trough plate 31 while the support shaft 75 is inserted into the roller 76, thereby being combined with the guide ring 41.

  According to the embodiment configured as described above, an article dropped from the dispersion table 20 onto the connecting portion 36 (that is, between the adjacent troughs 32) is radially outward by both the left and right coils 102. Is applied to the roller 76. In that case, it is usual that the force received from one of the left and right coils is greater than the force received from the other coil. Further, even if the same force is temporarily received from both coils, a state in which the force received from one coil is larger than the force received from the other coil at some point in time occurs. Therefore, when the article contacts the coil, it rotates with the roller and moves to either the left or right trough. Therefore, the articles that have fallen inside the guide block are smoothly fed into the left or right trough without staying there.

  As shown in FIG. 17, the gap δ between the outer peripheral surface of the roller 76 and the corner portion facing the roller δ is the type of product (for example, chicken, beef, pork in the case of raw meat) and the property of the product (for example, adhesiveness). ) To be determined as appropriate. Specifically, it is preferable to prepare a plurality of rollers 76 having different outer diameters or different surface roughnesses and replace them according to the object to be weighed. In particular, in the case of raw meat, the gap δ is preferably set in the range of about 1 to 5 mm so that the article attached to the roller 76 is scraped off by the tip 431 of the side wall 43 ″.

  In the above description, the roller 76 rotates about the vertical axis 71 in the vertical direction, but the support shaft 75 of the roller 76 is arranged in the vertical direction or the radial direction or in an oblique direction having directional components in both directions. May be. Among these, in the form in which the support shaft 75 is arranged in the radial direction or the oblique direction, the radially outer end of the roller 76 is supported by the guide block 42, but the radially inner end is the connecting portion 36 or the upper stage. It is supported by any one of the cylindrical portions 16. In the form in which the support shaft is arranged in the radial direction or obliquely, the roller 76 may be a conical roller whose diameter increases toward the outside in the radial direction. The apex angle of the conical roller is such that, for example, the outer peripheral edges on both sides appearing when the conical roller arranged in the radial direction or the oblique direction is viewed from above substantially coincide with the edge of the trough or extend substantially parallel thereto. Can be decided. According to this aspect, the article dropped from the dispersing roller toward the connecting portion between the troughs is reliably distributed to the left or right trough by the conical roller.

  Note that the radially inner end of the guide block does not need to be formed with a concave cylindrical surface, and may be formed with a convex cylindrical surface as shown in FIG.

  While various embodiments of the combination weighing device according to the present invention have been described above, the present invention can be variously modified. For example, in the above description, the side wall of the guide block 42 is formed with a flat surface, but the middle part of the side wall may be formed with a surface curved in a direction away from the trough. Moreover, although the booster hopper is provided in the weighing device, the booster hopper may not be provided. Further, in the above description, the dispersion table is driven and connected to the motor, and the dispersion table is rotated based on the driving of the motor. However, it is not essential that the dispersion table is rotated. The article may be dispersed by vibration applied to the dispersion table from the vibration source. Furthermore, in the above description, the connecting portion and the guide block are configured to be separable, but the connecting portion and the guide block that are separately formed may be integrally connected, or the guide block may be integrated with the connecting portion. It may be formed automatically. And a guide block and a connection part may be comprised so that a guide block may cover substantially the whole connection part, and a guide block may be located in the radial direction outer side of a connection part. In this case, the guide block and the connecting portion may be configured and combined as separate members, or the guide block may be formed integrally with the connecting portion. In the above description, the guide block is formed as a member different from the trough plate. However, the guide block may be formed integrally with the trough plate. In this case, a guide block is formed instead of the connecting portion. Alternatively, a part of the connecting portion may be left on the radially inner side, and the guide block may be formed on the radially outer side.

1 is a perspective view of a combination weighing device according to the present invention. FIG. 2 is a perspective view of a combination weighing device in which a part of members (guide rings) is cut from the combination weighing device shown in FIG. 1. FIG. 2 is a perspective view of a trough plate and an upper frame portion of the combination weighing device shown in FIG. 1. FIG. 2 is a perspective view of a dispersion plate and a trough plate of the combination weighing device shown in FIG. 1. The top view of the trough plate of the combination weighing | measuring apparatus shown in FIG. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. The perspective view of the trough plate of the combination weighing | measuring apparatus shown in FIG. 1, and the coil unit arrange | positioned there. Sectional drawing of a coil unit rotation drive part. The front view (FIG. 9 (a), (c)) and side view (FIG. 9 (c), (d)) of the components which comprise an il unit rotation drive part. The perspective view which looked at the guide ring of the combination weighing | measuring apparatus shown in FIG. 1 from diagonally upward. The perspective view which looked at the guide ring of the combination weighing | measuring apparatus shown in FIG. 1 from diagonally downward. FIG. 2 is a plan view of a guide ring (half segment) of the combination weighing device shown in FIG. 1. XIII-XIII sectional view taken on the line of FIG. The top view of the other guide ring (half part segment) of the combination weighing | measuring apparatus shown in FIG. XV-XV sectional view taken on the line of FIG. Sectional drawing of the guide block which has a roller. The fragmentary sectional view of the guide block which has a roller. Sectional drawing of the other form of the guide block which has a roller.

1: Combination weighing device 10: Frame 11: Lower frame part 12: Upper frame part 13: Center shaft 14: Lower cylinder part 15: Middle cylinder part 16: Upper cylinder part 17: Upper annular plate 20: Dispersion table 21: Upper cone Surface 22: Lower conical surface 23: Motor 30: Annular conveying part 31: Trough plate 32: Trough 33: Edge 34: Recessed groove 35: Trough central axis 36: Connecting part 37 (371, 372, 373): Raised part Joint)
38: Coil unit 39: Vertical wall part 40: Opening 41: Guide ring 42: Guide block (guide part)
43: side wall 44: corner portion 45: outer peripheral wall 46: article guide passage 47: ceiling wall 48: bottom wall 49 (491, 492, 493): recess (engagement portion)
50: Bridge 51: Dividing line 52: Segment 53: Roller 54: Vertical shaft 55: Concave cylindrical surface 56: Opening (upper end support portion)
57: Support shaft 58: Small diameter part 59: Main body part 60: Rotation drive part 61: Pool hopper 62: Weighing hopper 63: Booster hopper 64: Collecting chute 71: Vertical shaft 72: Concave cylindrical surface 73: Projection part 74: Opening 75 : Roller support shaft 76: Roller 101: Coil holder 102: Helical coil 103: Male connector 104: Shaft portion 105: Connector ring 106: Drive connection structure 107: Coil support portion 108: Virtual circle 109: Pin insertion hole 110: Circular opening Portion 111: Long hole portion 112: Drive shaft 113: Support structure 114: Drive connection structure 115: Pulley 116: Motor 117: Female connector 118: Ring plate 119: Virtual circle 120: Pin

Claims (6)

a) a central axis in the vertical direction;
b) a table that receives articles supplied from above and distributes them radially outward of the central axis;
c) An annular conveying unit that receives the article dropped from the outer peripheral edge of the table and conveys the article outward in the radial direction,
A groove extending from the central axis in the radial direction and arranged at a predetermined interval around the central axis and between the pair of radial edges extending in the radial direction and the pair of radial edges and recessed downward Having a plurality of troughs formed by
d) a plurality of guide portions for guiding the articles supplied from the table to the plurality of troughs;
Each of the plurality of guide portions includes a pair of guide walls that guide the article along adjacent troughs on both sides, a corner portion that connects radially inner ends of the pair of guide walls, and A roller that is radially inward and rotatably supported to guide the article to the adjacent troughs on both sides;
e) a plurality of conveying members disposed on each of the plurality of troughs, for conveying the article supplied from the table radially outward along the troughs and dropping from the outer peripheral end of the troughs;
f) a plurality of pool hoppers disposed below the annular portion and receiving the articles dropped from the outer peripheral ends of the plurality of troughs;
g) A combination weighing device comprising a plurality of weighing hoppers respectively disposed below the plurality of pool hoppers.   2. The combination weighing apparatus according to claim 1, wherein the roller is supported so as to be rotatable about an axis having directional components in the vertical direction, the radial direction, or both. A frame portion that is inside the annular conveying portion and supports the dispersion table;
3. The combination weighing device according to claim 2, wherein one end of the shaft of the roller is supported by the guide portion, and the other end is supported by the annular conveying portion or the frame portion. The annular conveying portion is disposed between troughs adjacent in the circumferential direction, and has a connecting portion that connects one radial edge and the other radial edge of the adjacent troughs,
The combination weighing device according to claim 1, wherein the guide portion is detachably provided on the connecting portion.   The combination weighing device according to claim 1, wherein a gap is formed between the roller and the corner portion.   6. The combination weighing device according to claim 5, wherein the gap has a size of 1 to 5 mm.

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