JP2016136087A - Combination weighing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combination weighing apparatus which can suppress falling from a trough to a hopper, even if for example, weighing objects with high fluidity are carried from the trough by a screw mechanism, and preferably controls the supply amount of the weighing objects to the hopper.SOLUTION: A combination weighing apparatus is equipped with a body; a hopper; a trough which extends while inclined downward from the body to the hopper; a screw portion which is a spiral member disposed in the trough and carrying weighing objects in the trough toward the hopper, and rotates in the trough to carry the weighing objects; and suppressing member which suppress at least he falling of specific weighing objects sliding in the trough and falling on the hopper, of the weighing objects. The suppressing member is disposed near a trough tip end, and a predetermined space is formed between the suppressing member and the trough tip end on which at least the specific weighing objects fall in the whole of the trough tip end.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a combination weighing device that conveys an object to be weighed supplied to the trough by rotating a screw member disposed in the trough.

  Patent Document 1 discloses a combination weighing device. In this combination weighing device, the spiral member 11 having a spiral shape is supported in a state where the spiral member 11 is slightly lifted from the bottom surface of the trough 10 having a downward slope in the pool hopper 404 direction. Thereby, the spiral member 11 does not contact the bottom surface of the trough 10. Therefore, even when the spiral member 11 is rotationally driven to transport an object to be weighed, it is possible to avoid the surface of the bottom surface of the trough 10 being scraped.

JP 2009-270986 A

  In the combination weighing device described in Patent Document 1, the spiral member 11 and the trough 10 are not in contact with each other. Therefore, for example, an object to be weighed, which has a variation in the size of the article itself and has high fluidity, such as a raw lever, slides from the trough 10 toward the pool hopper 404 and is supplied to the pool hopper 404 as it is. In short, by falling into the trough 10 due to its own weight, the conveying force transmitted from the spiral member 11 or the deterring force for suppressing slipping is weakened, and the highly weighed object slides on the trough 10. , Supplied to the pool hopper 404.

  When the object to be weighed slides down the trough 10 and is supplied to the pool hopper 404 as described above, it is difficult to control the rotational drive of the spiral member 11 and to control the supply amount supplied to the pool hopper 404. That is, since the supply amount to the pool hopper 404 of the object to be weighed down the trough 10 in the actual product cannot be controlled, no matter how the rotational drive control of the spiral member 11 is controlled, the supply to the final pool hopper 404 is performed. It becomes difficult to control the amount.

  Therefore, the present disclosure can suppress the fall from the trough to the hopper to some extent even when a highly fluid object such as a raw lever is transported from the trough by the screw feeder mechanism. The amount of supply to the hopper can be suitably controlled.

  A combination weighing device according to the present disclosure includes a main body, a hopper, a trough extending downwardly from the main body with a downward inclination, and a spiral disposed in the trough to convey an object to be weighed in the trough toward the hopper. A member of a shape that rotates in the trough and transports the object to be weighed, and of the object to be weighed, at least prevents the specific object to be weighed from slipping in the trough and falling on the hopper The restraining member is disposed in the vicinity of the trough tip, and a predetermined space is formed between the restraining member and the trough tip from which at least a specific object to be measured falls among the entire trough tip. .

  The combination weighing device according to the present disclosure can suppress the falling from the trough to the hopper even when the highly fluid object to be weighed is transported from the trough by the screw mechanism. Can be suitably controlled.

It is a schematic perspective view of the combination weighing device 1 in the present embodiment. It is a schematic perspective view of the dispersion | distribution table 10 and the conveyance part 20 of the combination weighing device concerning FIG. It is the partial cross section figure seen from the side which drawn the conveyance part 20 of the combination weighing device 1 concerning FIG. It is a schematic diagram for demonstrating the structure of the screw unit 30 in this embodiment. It is a figure which shows the opening part 1001, the rotation drive part 1002, and the projection part 1003 which were provided in the flame | frame 90 which attaches the screw unit 30 in this embodiment, and the flame | frame 90. The schematic diagram when the arbitrary screw unit 30 is viewed from the outer periphery of the dispersion table toward the center of the dispersion table 10 is shown. It is a figure for demonstrating the structure which has an opening part in some suppression members 311 in this embodiment. It is a figure for demonstrating the structure which concerns on other embodiment. It is a figure for demonstrating the suppression member 311 comprised by the 1st member 3111 and 2nd member 3112 which concern on other embodiment.

  Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of already well-known matters and repeated descriptions for substantially the same configuration may be omitted. This is to avoid the following description from becoming unnecessarily redundant and to facilitate understanding by those skilled in the art.

  The inventor (s) provides the accompanying drawings and the following description in order for those skilled in the art to fully understand the present disclosure, and is intended to limit the subject matter described in the claims. Not what you want.

(Embodiment)
Hereinafter, the present embodiment will be described with reference to FIGS.

(1-1: Overall operation overview)
Hereinafter, the combination weighing device 1 according to the present embodiment will be described with reference to the drawings.

  FIG. 1 is a schematic perspective view of a combination weighing device 1 according to this embodiment.

  A combination weighing device 1 shown in FIG. 1 includes a dispersion table 10, a conveyance unit 20, a screw unit 30, a restraining member 311, a pool hopper 40, a weighing hopper 50, a booster hopper 60, a collective discharge chute 70, and a guide block 80.

  In FIG. 1, for convenience of explanation, only a part of a plurality of screw units 30 and restraining members 311 arranged in the entire apparatus is illustrated. In actual use, the screw unit 30 and the restraining member 311 are arranged between the adjacent guide blocks 80, respectively.

  Hereinafter, an outline of the operation of the combination weighing device 1 will be described first.

  First, an object to be weighed is conveyed to a combination weighing device 1 by a cross feeder (not shown) arranged above the combination weighing device 1. Here, the object to be weighed is a soft, sticky and highly fluid food such as a raw liver. However, the object to be weighed is not limited to this, and any object may be used as long as it is food that is difficult to carry by normal vibration conveyance and has high fluidity.

  The object to be weighed that has been conveyed by the cross feeder is supplied to a substantially central portion of the dispersion table 10. The dispersion table 10 is driven to rotate about a rotation axis C (see FIG. 1) extending in the vertical direction. And the dispersion | distribution table 10 conveys the to-be-measured object supplied from upper direction toward a radial direction outer side, disperse | distributing to the circumferential direction. The objects to be weighed and conveyed by the dispersion table 10 are discharged from the outer peripheral edge of the dispersion table 10.

  The objects to be weighed released from the dispersion table 10 are supplied to a plurality of conveying units 20 arranged in a ring shape below the dispersion table 10. The plurality of transport units 20 extend radially from the center of the dispersion table 10. In other words, the plurality of transport units 20 extend radially from the center of the combination weighing device 1. Here, a guide block 80 is disposed between the adjacent conveyance units 20. Due to the action of the guide block 80, the object to be weighed is prevented from falling between the conveying sections 20. Each transport unit 20 transports the objects to be weighed supplied from the dispersal table 10 toward the pool hopper 40 that is arranged around the disperse table 10 so as to correspond to each transport unit 20. Specifically, in each transport unit 20, an object to be weighed is transported in the trough 21 by rotationally driving a screw unit 30 disposed in the trough 21. Each transport unit 20 drops the transported object onto the pool hopper 40 by dropping it onto the pool hopper 40 disposed below the outer end of the transport unit 20 (below the outer end of the trough 21). Supply a sample.

  Here, when the object to be transported is an object to be weighed with high fluidity, it is conceivable that the transport force transmitted from the screw unit 30 weakens and falls from the screw unit 30 to the trough 21. The object to be weighed that falls on the trough 21 slides down the trough 21 toward the pool hopper 40 by its own weight. Finally, the object to be weighed is supplied from the trough 21 to the pool hopper 40 regardless of the drive of the screw unit 30. In the case of the present embodiment, the restraining member 311 is disposed in the vicinity of the tip of the trough 21, and the trough tip that passes when the object to be weighed that slides down the trough 21 among the restraining member 311 and the entire trough 21 tip falls to the pool hopper 40. A predetermined space is formed between the two. By means of the restraining member 311 arranged in this way, at least a part of the object to be weighed that slides down the trough 21 is restrained from falling by the restraining member 311. As a result, it becomes easier to control the supply amount as compared with the case where all the objects to be weighed down the trough 21 are put into the pool hopper 40. In short, supply of a large amount of objects to be weighed from the trough 21 to the pool hopper 40 at a time can be suppressed.

  The pool hopper 40 temporarily holds the objects to be weighed supplied from the transport unit 20. Thereafter, the held objects to be weighed are supplied to the corresponding weighing hoppers 50, which are arranged one below the respective pool hoppers 40. In each weighing hopper 50, the weight of the object to be weighed is measured by a weighing mechanism (not shown). The objects to be weighed discharged from the weighing hoppers 50 are accommodated in the corresponding booster hoppers 60 arranged one below the weighing hoppers 50 and temporarily held.

  The controller (not shown) of the combination weighing device 1 matches the target weight in the allowable range of weight combinations based on the weight of the objects to be weighed in the weighing hopper 50 and the booster hopper 60, or Find the closest hopper combination by calculation. The objects to be weighed in the hopper included in the combination obtained by the calculation by the controller are discharged to the collective discharge chute 70. The objects to be weighed discharged to the collective discharge chute 70 are supplied to a downstream process (not shown).

(1-2: Explanation of each component in the combination weighing device 1)
Hereinafter, the dispersion table 10, the conveyance unit 20, the pool hopper 40, the weighing hopper 50, and the booster hopper 60 in the combination weighing device 1 will be described with reference to the drawings.

  FIG. 2 is a schematic perspective view of a dispersion table of the combination weighing device 1 according to FIG. In FIG. 2, a state in which at least the guide block and the conveyance unit 20 are removed is depicted.

  FIG. 3 is a partial cross-sectional view of the dispersion table 10 of the combination weighing device and the conveyance unit 20 of the combination weighing device 1 shown in FIG. In FIG. 3, the front side of the concave groove portion of the trough 21 of the transport unit 20 is not illustrated. About the holder of the screw unit 30 of the conveyance part 20, sectional drawing is drawn.

  The dispersion table 10 is a member that disperses an object to be weighed supplied from a cross feeder (not shown) disposed above the combination weighing device 1. The dispersion table 10 supplies the dispersed objects to be weighed to the transport unit 20.

  Moreover, the dispersion | distribution table 10 is a member formed in a substantially circular shape in planar view. The dispersion table 10 includes a conical part 11 disposed at the center and a peripheral part 12 disposed on the periphery of the conical part 11 (see FIG. 2). The conical part 11 and the peripheral part 12 are both inclined so that the peripheral side of the dispersion table 10 is lowered (see FIG. 3). The inclination of the cone part 11 is formed steeper than the inclination of the peripheral edge part 12 (see FIG. 3).

  The dispersion table 10 is supported by a drive shaft (not shown) disposed below the dispersion table 10. The drive shaft that supports the dispersion table 10 is connected to a dispersion table motor (not shown). By driving the dispersion table motor, the dispersion table 10 is rotationally driven around the rotation axis C extending in the vertical direction. In this case, the dispersion table 10 may be configured to rotate in a single direction, or may be configured to change the direction of rotation as time elapses.

  When an object to be weighed is supplied from a cross feeder (not shown) disposed above the combination weighing device 1 to the vicinity of the center of the dispersion table 10 that is rotationally driven by a dispersion table motor, the dispersion table 10 is The supplied objects to be weighed are conveyed outward in the radial direction while being dispersed in the circumferential direction by centrifugal force. The objects to be weighed and transported by the dispersion table 10 are discharged from the outer peripheral edge of the dispersion table 10 and fall into the trough 21 (see FIG. 2) of any of the transport units 20.

  The transport unit 20 is a member that transports an object to be weighed supplied from the dispersion table 10. The combination weighing device 1 in the present embodiment has 14 transport units 20. However, the quantity of the conveyance part 20 is an illustration, Comprising: It is not limited to this. For example, the structure which has 18 conveyance parts 20 may be sufficient, and the structure which has 20 may be sufficient.

  The several conveyance part 20 is arrange | positioned so that the dispersion | distribution table 10 may be surrounded below the dispersion | distribution table 10 (refer FIG. 1). The plurality of transport units 20 extend radially from the periphery of the dispersion table 10 toward the pool hopper 40 disposed around the dispersion table 10 in plan view. More specifically, the plurality of transport units 20 extend radially from the space below the dispersion table 10 (see FIG. 3) toward the pool hopper 40 disposed around the dispersion table 10. One weighing hopper 50 corresponding to the pool hopper 40 is provided below each pool hopper 40 (see FIG. 1). That is, it can be said that the conveyance unit 20 extends radially from the periphery of the dispersion table 10 toward the weighing hopper 50 disposed around the dispersion table 10. The transport unit 20 transports the objects to be weighed dispersed by the dispersion table 10 toward the pool hopper 40 (in the transport direction D shown in FIG. 3).

  Each transport unit 20 mainly includes a trough 21 and a screw unit 30. The screw unit 30 is disposed in the trough 21.

  The trough 21 extends from the space below the dispersion table 10 toward the pool hopper 40 corresponding to the trough 21 (see FIG. 3). Each trough 21 extends in the radial direction with respect to the center of the dispersion table 10 in plan view. The troughs 21 included in each of the plurality of transport units 20 extend radially from the dispersion table 10 as a whole.

  Furthermore, the trough 21 has a downward slope from the center of the dispersion table 10 toward the pool hopper 40. Thereby, for example, even if an object to be weighed with high fluidity such as a raw lever falls on the trough 21, it is possible to prevent the object from staying on the spot. That is, the object to be weighed that has fallen on the trough 21 slides down the trough 21 by its own weight and is supplied to the pool hopper 40.

  Each trough 21 is separated from the internal space of the frame 90 by the upstream side wall 91 (see FIG. 3). The frame 90 is disposed below the distribution table 10 and supports the distribution table 10. Further, the frame 90 is provided with an opening 1001 into which the screw unit 30 is inserted, and accommodates at least a rotation driving unit 1002 (described later) that transmits driving force to the screw unit 30 in the internal space of the opening 1001 (FIG. 3). reference). The rotation drive unit 1002 is connected to a motor provided in the apparatus main body, and rotates about a rotation axis D shown in FIG. 3 in conjunction with the drive of the motor.

  Each trough 21 includes a concave groove portion 22 extending from the upstream side wall portion 91 and having an inner surface 22a curved in a semicircular shape (see FIG. 2). The recessed groove portion 22 is formed in a groove shape recessed downward by an inner surface 22a curved in a semicircular shape. In plan view, the concave groove 22 of each trough 21 extends from the upstream side wall 91 to the pool hopper 40 outward in the radial direction with respect to the center of the dispersion table 10. The concave groove portion 22 is inclined so that its outer edge side is lower, in other words, the pool hopper 40 side is lower than the dispersion table 10 side (see FIG. 3).

  An object to be weighed discharged from the outer peripheral edge of the dispersion table 10 is supplied to the trough 21. In addition, since the triangular prism-shaped guide block 80 (refer FIG. 1) is arrange | positioned between the adjacent troughs 21, an object to be measured does not fall into the space between the adjacent troughs 21 from the dispersion table 10, Supplied to any trough 21.

  The object to be weighed supplied to the trough 21 is transported by the rotation of the screw unit 30 disposed in the trough 21. More specifically, the screw unit 30 conveys the object to be weighed toward the pool hopper 40 by rotating the screw member 31 disposed on the trough 21.

  One screw unit 30 is arranged in each trough 21. The object to be weighed that has dropped onto the trough 21 is conveyed through the trough 21 as the screw unit 30 rotates. The configuration of the screw unit 30 will be described later.

  In the present embodiment, the screw unit 30 is preferably not in contact with the trough 21. By comprising in this way, when the screw unit 30 rotationally drives, it can prevent that the surface of the trough 21 is shaved by the screw unit 30.

  However, when the screw unit 30 is not in contact with the trough 21 as described above, a space is formed between the screw unit 30 and the trough 21. When the object to be weighed is located in this space, the conveyance force transmitted from the screw unit 30 or the deterring force for suppressing the slipping-off is weakened, so that the object to be weighed slides down the trough 21 by its own weight.

  One pool hopper 40 is provided below the outer edge side of each trough 21. The pool hopper 40 accommodates and temporarily holds an object to be weighed that has been transported by the transport unit 20. The pool hopper 40 supplies the temporarily held object to the weighing hopper 50 provided below the pool hopper 40 by opening an opening / closing gate (not shown) provided at the lower part of the pool hopper 40.

  The weighing hopper 50 is an example of a weighing unit. The weighing hopper 50 is disposed around the dispersion table 10. Specifically, one weighing hopper 50 is provided below each pool hopper 40. In other words, one weighing hopper 50 is provided below the outer edge side of the trough 21 of each transport unit 20. The weighing hopper 50 accommodates the objects to be weighed supplied from the pool hopper 40 and temporarily holds them. The weighing hopper 50 supplies the temporarily held object to the booster hopper 60 provided below the weighing hopper 50 by opening an opening / closing gate (not shown) provided at the lower portion of the weighing hopper 50. To do.

  Each weighing hopper 50 has a measuring device (not shown) that measures the weight of an object to be weighed in the weighing hopper 50. The weighing device is, for example, a load cell. The weighing result of the weighing device is transmitted to a controller (not shown) of the combination weighing device 1.

  One booster hopper 60 is provided below each weighing hopper 50. The booster hopper 60 is configured to accommodate and temporarily hold an object to be weighed supplied from the weighing hopper 50. The booster hopper 60 supplies the temporarily held objects to the collective discharge chute 70 provided below the booster hopper 60 by opening an opening / closing gate (not shown) provided at the lower part of the booster hopper 60. To do. When the booster hopper 60 receives the supply of the object to be weighed from the weighing hopper 50, the object to be weighed can be moved by the booster hopper 60 by opening an open / close gate (not shown) provided at the lower part of the booster hopper 60. It can be supplied to the collective discharge chute 70 without holding it once.

(2: Specific configuration of the screw unit 30)
Hereinafter, the configuration of the screw unit 30 will be described with reference to the drawings.

  FIG. 4 is a schematic diagram for explaining the structure of the screw unit 30 in the present embodiment.

  FIG. 4 is a view in which the outer diameter member 32 is cut along a predetermined plane, and is drawn so that the relationship between the groove cam provided in the inner diameter member 33 and the outer diameter member 32 disposed around the groove cam can be understood. Has been.

  FIG. 5 is a view showing a frame 90 to which the screw unit 30 is attached, an opening 1001 provided in the frame 90, a rotation driving unit 1002, and a protrusion 1003.

  As shown in FIGS. 4 and 5, the screw unit 30 is mounted in an opening 1001 formed in the frame 90 by the user.

  FIG. 6 is a schematic diagram when an arbitrary screw unit 30 is viewed from the outer periphery of the dispersion table toward the center of the dispersion table.

  As shown in FIGS. 1, 3 and 6, the screw unit 30 has at least a screw member 31 and a restraining member 311.

  As shown in FIG. 3, the screw member 31 is an archimedia screw composed of a rotating shaft member 31a and a helical fin-shaped member 31b disposed on the outer periphery of the rotating shaft member 31a. The screw member 31 is not limited to an Archimedian screw. In short, any screw member 31 may be used as long as it transports an object to be weighed with high fluidity.

  Here, the rotating shaft member 31a is an axis centered at the rotation center of the screw member 31, and rotates in conjunction with the rotation of the motor. Furthermore, the fin-shaped member 31b is a fin-shaped member. Even an object to be weighed with high fluidity can be suitably transported because the transport force is transmitted by the flat portion formed on the fin-shaped member 31b.

  Furthermore, a restraining member 311 is attached to the tip of the screw member 31. The restraining member 311 is attached to the tip of the rotating shaft member 31a. As shown in FIG. 3, a predetermined space is formed between the tip of the trough 21 and the restraining member 311. By providing the predetermined space in this manner, it is possible to suppress excessive supply of the objects to be weighed down the trough 21 to the pool hopper 40 and to reduce the objects to be weighed from staying in the trough 21. The predetermined space is preferably configured so that it can be changed depending on the object to be transported. For example, it is changed according to the size of the object to be transported. Specifically, when the size of the object to be weighed for conveyance is the first size, it is compared with a predetermined space related to the object to be weighed having a second size smaller than the first size. Thus, the predetermined space related to the first size is set large.

  The predetermined space may be set to an average size per one object to be weighed or a size of one or more objects to be weighed and less than two. In this case, even if the object to be weighed slides down from the trough 21 to the pool hopper 40, a large amount of object to be weighed does not fall on the pool hopper 40 at a time, so that the supply amount can be easily controlled.

  Here, as described above, the restraining member 311 is a lid-like member having a predetermined space through which, for example, about one object to be weighed can pass with respect to the tip of the trough 21, and cannot be opened and closed in the conveying direction of the object to be weighed. A configuration is preferred. When the restraining member 311 can be freely opened and closed, the object to be weighed down the trough 21 is supplied to the pool hopper 40 without being restrained by the restraining member 311.

  In addition, if the restraining member 311 can be opened and closed, it is preferable that the restraining member 311 opens only to a predetermined space. By configuring in this way, even if the restraining member 311 is opened and closed, a predetermined space or more is not opened, so that a large amount of objects to be weighed can be restrained from being supplied to the pool hopper 40 at one time. That is, in the above, a gate mechanism that can be opened and closed in the direction from the dispersion table 10 to the pool hopper 40 is attached to the tip of the trough 21, and the gate mechanism does not freely open and close, for example, one object to be weighed. It becomes the structure which can be opened to the predetermined space which can pass to some extent. As a result, even when a gate mechanism for confirming the presence / absence of an object to be weighed is provided at the tip of the trough 21, for example, the gate mechanism can be used as a restraining member, and the number of parts can be reduced. can do. As a result, the number of parts to be maintained or cleaned is reduced, so that convenience for the user can be improved.

  The restraining member 311 is usually arranged without forming a predetermined space in the trough 21, and when the object to be weighed slides down to the tip of the trough 21, the restraining member 311 and the trough 21 are caused by the weight of the object to be weighed. You may comprise so that a predetermined | prescribed space may be formed in the front-end | tip. By configuring in this way, it is possible to make a configuration in which the object to be weighed is not always supplied from the tip of the trough 21 to the pool hopper 40, so that it is easy to control the amount of the object to be weighed in the entire apparatus.

  In the above case, it is preferable that a predetermined space is formed between the restraining member 311 and the tip of the trough 21 when a plurality of objects to be weighed, such as three, arrive at the tip of the trough 21.

  The screw member 31 is connected to the inner diameter member 33, and the screw member 31 also rotates in conjunction with the rotation of the inner diameter member 33.

  Specifically, in a state where the screw member 31 is attached, the protrusion 1003 formed on the rotation driving unit 1002 is engaged with the groove cam formed on the inner diameter member 33. For this reason, when the rotation drive unit 1002 rotates, the inner diameter member 33 rotates in the same direction as the rotation of the rotation drive unit 1002. When the inner diameter member 33 rotates, the screw member 31 connected to the inner diameter member 33 rotates. The object to be weighed is transported in the trough and carried to the pool hopper 40 as the screw member 31 rotates.

  The outer diameter member 32 is a cylindrical member that is joined to the screw member 31. Furthermore, since the inner diameter member 33 is disposed inside the outer diameter member 32, the outer diameter member 32 has a donut shape in cross section. Further, the outer diameter member 32 is arranged around the inner diameter member 33 via a bearing, and is configured to have little influence on the rotation operation of the inner diameter member 33. That is, the outer diameter member 32 is configured not to rotate by receiving the rotational force even when the inner diameter member 33 rotates.

  The inner diameter member 33 is a cylindrical member connected to the screw member 31. And since the rotation drive part 1002 and the projection part 1003 formed in the rotation drive part are inserted in the inside diameter member 33, the cross section has a donut shape. The inner diameter member 33 is disposed in a space formed inside the outer diameter member 32. Further, the inner diameter member 33 is fitted with the protruding portion 1003 and has a groove cam on which the protruding portion 1003 slides from the fitted state. This groove cam is a groove cam in which a groove is formed in a spiral shape. Specifically, the groove cam has a groove formed in a spiral shape from a starting point of a portion of the inner diameter member 33 that fits with the protrusion 1003. As the protrusion 1003 moves while sliding with respect to the groove cam, the inner diameter member 33 is inserted into the main body.

  Here, for convenience of explanation, when the screw unit 30 is attached to the main body, a portion that first fits with the protruding portion 1003 is referred to as a first groove cam portion. Further, a portion in which the protrusion 1003 moves while sliding from the state in which the protrusion 1003 is fitted to the first groove cam portion is referred to as a second groove cam portion.

  The first groove cam portion and the second groove cam portion are formed physically continuously. That is, the protrusion 1003 can slide and move on the second groove cam portion as it is after sliding and moving on the first groove cam portion. However, in order to move the protrusion 1003 from the first groove cam portion to the second groove cam portion or from the second groove cam portion to the first groove cam portion, the user needs to change the direction of the force applied to the screw unit 30. There is.

  More specifically, the switching portion between the first groove cam portion and the second groove cam portion is preferably discontinuous in the direction in which the protrusion 1003 slides and moves. Specifically, the first groove cam portion has a groove cam formed in the same direction as the rotation axis D, whereas the second groove cam portion is a groove formed spirally with respect to the outer periphery of the inner diameter member 33. It becomes a cam.

  By configuring in this way, the operation when fitting the protrusion 1003 into the first groove cam portion and the operation when moving the protrusion 1003 while sliding on the first groove cam portion and the second groove cam portion. Can be different. In addition, when the protrusion 1003 is fitted into the first groove cam portion, the user may apply a force in the same direction as the rotation axis D. Therefore, even if it is difficult for the user to see the attachment portion between the protrusion 1003 and the first groove cam portion, the user can intuitively fit the screw unit 30 into the protrusion 1003.

  The configurations of the first groove cam portion and the second groove cam portion are not limited to those described above, and any configuration may be used as long as the force applied to the screw unit 30 by the user is changed. It doesn't matter.

  As shown in FIGS. 3 and 6, the restraining member 311 is a member having a plane orthogonal to the conveying direction in which the screw unit 30 conveys the object to be weighed. The restraining member 311 is attached to the tip of the screw unit 30. As shown in FIG. 6, the restraining member 311 may be configured by a substantially circular plate-shaped member. Moreover, shapes other than substantially circular shape may be sufficient. In other words, any shape may be used as long as the object to be weighed down from the trough 21 to the pool hopper 40 can be prevented from dropping to the pool hopper 40 to some extent.

(3; Other embodiments)
The suppression member 311 in the above embodiment has been described as a substantially circular plate-like member. However, the present invention is not limited to such a configuration. For example, a configuration having an opening portion in a part of a substantially cylindrical shape may be used.

  FIG. 7 is a view for explaining a configuration having an opening in a part of the restraining member 311 in the present embodiment.

  In FIG. 7, the restraining member 311 has an arcuate opening.

  In the case where the restraining member 311 has an opening as described above, as shown in FIG. 8, the conveyance terminal portion located immediately before the object to be weighed is put into the pool hopper 40 in the screw unit 30 is the restraining member. It is preferable that the restraining member 311 and the screw unit 30 are attached so as to be located at the opening portion in 311. That is, since the supply amount that the screw unit 30 supplies the objects to be weighed from the end to the pool hopper 40 can be adjusted, it is possible to easily control the supply amount as a whole.

  As shown in FIG. 9, the restraining member 311 has a first member 3111 and a second member 3112 disposed at a position spatially overlapping the first member 3111, and the first member 3111 and the second member 3112 You may make it the structure by which the magnitude | size of an opening part is changed by changing relative positional relationship. By comprising in this way, since the supply amount from the screw unit 30 to the pool hopper 40 can be changed arbitrarily, more detailed supply amount control can be performed.

  In the above description, the adjustment mechanism including the first member 3111 and the second member 3112 has been described. However, the suppression member 311 is provided with a shutter mechanism, and the size of the opening is adjusted according to the degree of opening and closing of the shutter mechanism. It may be configured to control the supply amount. In short, any structure may be used as long as the suppression member 311 has an opening and the size of the opening can be adjusted.

  Further, when the restraining member 311 has an opening portion, the controller for controlling the motor shown in FIGS. 3 and 8 is configured such that when the screw unit 30 transitions from the operation state to the stop state, the opening portion drops a specific object to be weighed. It is preferable to control to stop at a position different from the trough tip. That is, in the case of a general configuration in which the trough 21 is disposed on the lower side of the screw unit 30, the controller performs control so that the opening portion of the restraining member 311 is on the vertical upper side. Thereby, it is possible to prevent the opening of the trough where the object to be weighed slides down the trough 21 and falls to the pool hopper 40 and stops, and the object to be weighed is supplied to the pool hopper 40 in a large amount. Can be suppressed.

  In the above embodiment, the configuration in which the restraining member 311 is provided at the tip of the screw unit 30 has been described. However, the restraining member 311 is disposed in the vicinity of the tip of the trough 21, and a predetermined space is formed between the restraining member 311 and the tip of the trough 21 where at least a specific object to be weighed falls out of the entire tip of the trough 21. Good. Therefore, the restraining member 311 is not necessarily attached to the tip of the screw unit 30. For example, the suppression member 311 may be attached to the trough 21 or may be attached to the guide block 80.

(4; Summary)
The combination weighing device 1 according to the present embodiment is disposed in the trough 21 with the main body, the pool hopper 40, the trough 21 extending from the main body with a downward inclination in the direction of the pool hopper 40, and the measurement target in the trough 21. A screw-shaped member 30 that conveys an object to be weighed by rotating in the trough 21 and a trough 21 of the object to be weighed in the trough. A deterring member 311 that at least deters falling of a specific object to be weighed, and the deterring member 311 is disposed in the vicinity of the tip of the trough 21, and at least a specific object to be weighed of the deterring member 311 and the entire tip of the trough 21 A predetermined space is formed between the tip of the trough 21 where the object falls.

  As a result, even if the object to be weighed, which has been transported from the screw unit 30 and has fallen onto the trough 21, slides down the trough 21, the object to be weighed is prevented from dropping the pool hopper 40 by the restraining member 311. . Furthermore, since a predetermined space is formed between the front end of the trough 21 and the restraining member 311, an object to be weighed that has slid down the trough 21 can fall into the pool hopper 40 without staying in the trough 21. . For this reason, it is possible to prevent the objects to be weighed from sliding down the trough 21 and supplying a large amount to the pool hopper 40 at a time. Therefore, it is possible to easily control the supply amount of the entire apparatus by the rotational drive control of the screw unit 30. .

  In addition, preferably, the restraining member 311 is a member having a plane perpendicular to the conveying direction in which the screw unit 30 conveys the object to be weighed.

  Thereby, since the suppression member 311 can suppress the to-be-measured object which slides down the trough 21 on a plane, it can suppress the fall to the pool hopper 40 more. Therefore, it is possible to easily control the supply amount of the entire apparatus.

  Preferably, the restraining member 311 is attached to the tip of the screw unit 30 and has an opening in a part of the plane, and is located immediately before the object to be weighed is put into the pool hopper 40 in the screw unit 30. The restraining member 311 and the screw unit 30 are attached so that the end portion is located at the opening portion of the restraining member 311.

  Thereby, the object to be weighed conveyed to the tip of the screw unit 30 is supplied to the pool hopper 40 as it is without falling into the trough 21. That is, the supply amount of the object to be weighed can be controlled by rotating the screw unit 30. Therefore, it is possible to easily control the supply amount of the entire apparatus.

  Preferably, the controller further includes a controller that controls the operation of the screw unit 30, and the controller has an opening portion that is different from a trough tip where a specific object to be measured falls when the screw unit 30 transitions from an operating state to a stopped state. The screw unit 30 is controlled so as to stop at the position.

  Thereby, although the screw unit 30 is stopped, the amount of falling from the trough 21 to the pool hopper 40 due to its own weight can be suppressed. Thereby, it is possible to easily control the supply amount of the entire apparatus.

  Preferably, the screw unit 30 includes at least a rotating shaft member 31a and a helical fin-shaped member 31b disposed on the outer periphery of the rotating shaft member 31a, and the suppression member 311 is disposed at the tip of the rotating shaft member 31a. The combination weighing device according to claim 1, which is attached.

  Preferably, the restraining member 311 has an adjustment mechanism that changes the size of the opening.

  Thereby, the user of an apparatus can adjust arbitrarily based on the magnitude | size of a to-be-measured object.

  In addition, preferably, the restraining member 311 includes a first member 3111 and a second member 3112 that spatially overlaps the first member 3111, and the relative positional relationship between the first member 3111 and the second member 3112 is changed. As a result, the size of the opening is changed.

  The combination weighing device according to the present embodiment has been described on the assumption that the screw unit 30 and the pool hopper 40 are arranged at least in an annular shape around the dispersion table 10 as shown in FIG. However, this configuration is merely an example for applying the present invention. For example, a combination weighing unit in which the screw unit 30 and the pool hopper 40 are arranged in a straight line, and a plurality of two members arranged in a straight line are arranged in parallel. It may be a device. In short, any combination weighing device in which the screw unit 30 and the pool hopper 40 are arranged in a straight line may be applied.

  As described above, the embodiments have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to an embodiment in which changes, replacements, additions, omissions, and the like are appropriately performed. Moreover, it is also possible to combine each component demonstrated by the said embodiment and modification, and can be set as new embodiment.

  As described above, the embodiments have been described as examples of the technology in the present disclosure. For this purpose, the accompanying drawings and detailed description are provided.

  Accordingly, among the components described in the accompanying drawings and the detailed description, not only the components essential for solving the problem, but also the components not essential for solving the problem in order to illustrate the above technique. May also be included. Therefore, it should not be immediately recognized that these non-essential components are essential as those non-essential components are described in the accompanying drawings and detailed description.

  Moreover, since the above-mentioned embodiment is for demonstrating the technique in this indication, a various change, replacement, addition, abbreviation, etc. can be performed in a claim or its equivalent range.

  The present disclosure can be applied to a combination weighing device that conveys an object to be weighed with high fluidity by a screw.

DESCRIPTION OF SYMBOLS 1 Combination measuring device 10 Dispersion table 20 Conveying part 21 Trough 22 Recessed groove part 22a The inner surface (surface facing a trough screw member) of a recessed groove part
30 Screw unit 31 Screw member 31a Rotating shaft member 31b Fin-shaped member 311 Suppression member 3111 First member 3112 Second member 32 Outer diameter member 33 Inner diameter member 40 Pool hopper 50 Weighing hopper (measuring means)
60 Booster Hopper 70 Collective Discharge Chute 80 Guide Block 1001 Opening 1002 Rotation Drive Unit 1003 Protrusion D D Conveying Direction of Conveying Unit (Conveying Direction of Conveying Means)

Claims (7)

The body,
With a hopper,
A trough extending from the main body with a downward slope in the direction of the hopper;
A helical member that is disposed in the trough and conveys the object to be weighed in the trough toward the hopper, and a screw part that conveys the object to be weighed by rotating in the trough;
A deterrent member that at least prevents the specific object to be weighed, which slides in the trough and falls on the hopper among the objects to be weighed,
The restraining member is disposed in the vicinity of the trough tip, and a predetermined space is formed between the restraining member and the trough tip from which at least the specific object to be weighed falls out of the entire trough tip.
Combination weighing device.   The combination weighing device according to claim 1, wherein the restraining member is a member having a plane perpendicular to a conveyance direction in which the screw portion conveys the object to be weighed. The restraining member is attached to the tip of the screw part and has an opening in a part of the plane,
The said restraining member and the said screw part are attached so that the conveyance termination | terminus part located just before the said to-be-measured item is thrown into the said hopper among the said screw parts is located in the said opening part in the said restraining member. Item 3. The combination weighing device according to Item 2. A control unit for controlling the operation of the screw unit;
The control unit controls the screw unit such that when the screw unit transitions from an operating state to a stopped state, the opening portion stops at a position different from the trough tip where the specific object to be measured falls. The combination weighing device according to claim 3. The screw part is composed of at least a rotating shaft member and a helical fin member disposed on the outer periphery of the rotating shaft member,
The combination weighing device according to claim 1, wherein the restraining member is attached to a tip of the rotating shaft member.   The combination weighing device according to claim 3, wherein the restraining member includes an adjustment mechanism that changes a size of the opening portion. The restraining member has a first member and a second member that spatially overlaps the first member,
The combination weighing device according to claim 6, wherein a size of the opening portion is changed by changing a relative positional relationship between the first member and the second member.