JP6066814B2 - Combination scale - Google Patents

Description

  The present invention relates to a combination weigher that puts a weighed object into a packaging machine or the like.

  Conventionally, an object to be weighed such as confectionery, which has been weighed with a combination weigher and set to a predetermined weight, is generally put into a packaging machine and packed into a packaging bag or packaging container, for example.

  In such a combination weigher that weighs an object to be weighed, for example, a dispersion feeder is arranged at the upper center, and a plurality of linear feeders are installed radially around the dispersion feeder, below each of the linear feeders. A supply hopper and a weighing hopper are disposed below the supply hopper, and a discharge chute is disposed below the weighing hopper. Here, the discharge chute includes, for example, a plurality of bowl-shaped inclined chutes provided corresponding to each weighing hopper, and a collective funnel that collects and discharges the objects to be weighed discharged from the plurality of inclined chutes. Is done.

  In such a combination weigher, in a combination weigher in which an elongated rod-shaped article is an object to be weighed, the object to be weighed is held in a vertically long posture in the supply hopper and the weighing hopper, and discharged from the weighing hopper in a vertically long posture. Some are configured to be discharged to a chute (see, for example, Patent Document 1). The supply hopper and the weighing hopper have a configuration in which a discharge gate is provided in a hopper body having a substantially square horizontal cross section.

JP 2010-96651 A

  In the conventional combination weigher, in order to hold the bar-shaped objects to be weighed in the feeding hopper and the weighing hopper in a vertically long posture, for example, the horizontal cross-sectional area of the hopper body of the feeding hopper and the weighing hopper is substantially reduced. The weighing object is prevented from falling down.

  However, such a configuration is not suitable in the case where several elastic rod-like objects to be weighed, such as a wiener, are combined and discharged to the packaging machine. In this case, the combination weigher supplies, for example, one wiener to each supply hopper and each weighing hopper and holds them in order to obtain and discharge a combination of several wieners, for example. In this case, if the horizontal cross-sectional area of the hopper body is reduced in order to hold the wiener in a vertically long posture, the wiener is elastic and slightly bent when it is dropped and supplied to the supply hopper and the weighing hopper. For example, the wiener is stretched between two opposing side walls of a substantially square hopper body or between two opposing corners (corners of adjacent side walls). It may not be discharged from the hopper.

  In addition, when a rod-like object to be weighed such as a wiener is discharged from the weighing hopper to the discharge chute without controlling the posture, several discharges are made at the discharge chute discharge port (for example, the discharge port of the collecting funnel). It becomes easy for clogged items to become clogged.

  The present invention has been made to solve the above-described problems, and provides a combination weigher that is elastic and can be smoothly discharged by weighing a slender bar-like object like a wiener. The purpose is that.

  In order to achieve the above-mentioned object, a combination weigher according to an aspect of the present invention is arranged in a circular shape, and each of the plurality of hoppers discharges the bar-shaped objects to be supplied after temporarily holding them. Each of the hoppers so that the objects to be weighed discharged from the hopper are received at the upper end side portion and slid down in a direction toward a position directly below the center of the circle, which is an array of the hoppers, and discharged from the lower end. A plurality of inclined chutes provided to be inclined downward; and a combination means for obtaining a combination of the hoppers for discharging the objects to be weighed based on a predetermined combination condition. It is configured to hold in a posture in which the longitudinal direction is a horizontal direction orthogonal to the radial direction of the circle that is an array of the hoppers, and to discharge in that posture, and the inclined chute is perpendicular to the inclined direction Cross section The shape is a shape composed of a first side and a second side with one end connected to each other, and a plate-like first slope portion forming the first side and a plate-like second slope forming the second side. And a boundary line between the first inclined surface portion and the second inclined surface portion in a plan view is located at a position deviating from the center of the hopper.

  According to this configuration, since the rod-like object to be weighed is held in the hopper in a horizontally long posture, the object to be weighed is elastic like a wiener and is an elongated rod-like object to be weighed. Thus, it is possible to prevent the object to be weighed from being pulled out and being discharged. In addition, since the object to be weighed that is discharged from the hopper and slides down on the inclined chute is discharged in a vertical orientation on the inclined chute, it is possible to prevent the objects to be weighed from becoming tangled at the discharge port. Therefore, it is possible to measure and smoothly discharge a slender bar-like object to be weighed like a wiener.

  In addition, the first side and the second side of the cross-sectional shape of the inclined chute are formed of a long side and a short side having different lengths, and the center of the hopper forms the long side. You may be comprised so that it may be located right above.

  According to this configuration, the boundary line between the first inclined surface portion and the second inclined surface portion can be set to a position off the center of the hopper in plan view without increasing the inclination chute.

  In addition, it further comprises a collective funnel having a side shape of an inverted truncated cone for sliding the objects to be weighed discharged from the lower ends of all the inclined chutes and discharging them from the lower discharge port. The extended line of the boundary line of the inclined chute may be configured to pass through the center of the outlet of the collecting funnel.

  According to this configuration, since the object to be weighed slides straight toward the center of the discharge port of the collective funnel without sliding down on the collective funnel, the transit time of the collective funnel of the object to be measured becomes long. Can be avoided.

  The present invention has the configuration described above, and is capable of providing a combination weigher that can be elastically smooth like a wiener and can smoothly and smoothly discharge an elongated bar-shaped object. Play.

(A) is a front view of the combination weigher of one structural example of embodiment of this invention, (b) is the top view which looked at the structure below from the weighing hopper of the combination weigher from the top. It is a schematic diagram which shows the outline of the partial cross section which looked at the combination weigher shown in FIG. 1 from the front. (A) is a perspective view which shows an example of the unification | combination chute with which the three inclination chute in the embodiment of this invention was integrated, (b) is the unification chute | shoot with four inclination chute integrated. It is a perspective view which shows an example. It is the model top view which looked at the arbitrary 1 weighing hopper in embodiment of this invention, the one corresponding inclination chute, and the collective funnel from the top. It is a perspective view which shows an example of the time change of the attitude | position of the to-be-measured object discharged | emitted from arbitrary one weighing hopper in embodiment of this invention. It is a perspective view which shows an example of the time change of the attitude | position of the to-be-measured object discharged | emitted from arbitrary one weighing hopper in embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference symbols throughout all the drawings, and redundant description thereof is omitted. Further, the present invention is not limited to the following embodiment.

(Embodiment)
Fig.1 (a) is a front view of the combination weigher of the example of 1 structure of embodiment of this invention, FIG.1 (b) is the top view which looked at the structure below from the weighing hopper of the combination weigher from the top. Yes (however, the collecting hopper 7 is not shown). FIG. 2 is a schematic diagram showing an outline of a partial cross section when the combination weigher is viewed from the front.

  In this combination weigher, a center base body (body) 10 is arranged at the center of the apparatus, for example, supported by four support legs 12, and an object to be weighed is dispersed radially by vibration in the center of the upper portion of the center base body 10. A substantially conical dispersion feeder 1 is provided. In the dispersion feeder 1, the object to be weighed supplied from the external supply device to the central portion thereof is sent out toward the peripheral portion by vibration. Around the dispersion feeder 1, a plurality of linear feeders 2 are provided in a radial pattern for conveying an object to be weighed sent from the dispersion feeder 1 by vibration and feeding it to each supply hopper 3. A supply hopper 3 is provided below the tip of each linear feeder 2, and a weighing hopper 4 is provided below the supply hopper 3. The plurality of supply hoppers 3 and weighing hoppers 4 are each arranged in a circular shape. Each supply hopper 3 receives the object to be weighed sent from the linear feeder 2 and opens the discharge gate 32 when the weighing hopper 4 disposed below the empty hopper 4 becomes empty, and puts the object to be weighed into the weighing hopper 4. Each weighing hopper 4 is attached with a weight sensor (not shown) such as a load cell that measures the weight of the object to be weighed in the weighing hopper 4, and the measured value by each weight sensor is output to the control device 8. .

  An upper chute 5 is provided below the weighing hoppers 4 arranged in a circle, a collective funnel 6 as a lower chute is disposed below the upper chute 5, and a collective hopper 7 is disposed below the collective funnel 6. It is arranged. The collecting hopper 7 can hold the objects to be weighed discharged from the weighing hopper 4 and then open the pair of discharge gates 71 to discharge them. The collective funnel 6 and the collective hopper 7 are supported by the gantry 11 via attachment members (not shown). Below the collective hopper 7, for example, a packaging machine (not shown) is arranged, and the objects to be weighed discharged from the collective hopper 7 are put into the packaging machine and packed, for example, in a bag.

  The center base body 10 is supported by four support legs 12 fixed to a ring-shaped gantry 11 having a hollow center part for disposing the upper chute 5 and the collecting funnel 6. The gantry 11 is fixed to the floor on the second floor, for example, and a packaging machine is installed on the first floor below.

  A dispersion feeder 1 and a linear feeder 2 are attached to the upper portion of the center substrate 10, and a supply hopper 3 and a weighing hopper 4 are attached to the side surface of the center substrate 10. Further, inside the center substrate 10, drive units such as the dispersion feeder 1, the rectilinear feeder 2, the supply hopper 3 and the weighing hopper 4, a weight sensor for measuring the weight of an object to be weighed in the weighing hopper 4, and the like are housed. ing.

  The control device 8 is constituted by, for example, a microcontroller or the like, and controls the entire combination weigher and performs combination processing for obtaining a combination of the weighing hoppers 4 for discharging the objects to be weighed based on predetermined combination conditions (that is, combination means). Function as). In this combination processing, for example, based on the weighing value of each weighing hopper 4 (the weight value of the object to be weighed in the weighing hopper 4 measured by the weight sensor), the total of the weighing values is within the allowable range with respect to the target weight. And a combination of the weighing hoppers 4 for discharging the object to be weighed (hereinafter referred to as “discharge combination”). ").

  This combination weigher has a configuration suitable for weighing an elastic rod-shaped object such as a wiener. This configuration will be described in detail below.

  As shown in FIG. 1B, the upper chute 5 is configured by providing a plurality of united chutes 5j formed by integrating a plurality of inclined chutes 5i. Here, as an example, the upper chute 5 is constituted by four united chutes 5j, and two united chutes 5ja out of the four united chutes 5j are obtained by integrating three inclined chutes 5i. The other two united chutes 5jb are obtained by integrating four inclined chutes 5i. Each inclined chute 5 i is provided corresponding to the weighing hopper 4.

  FIG. 3A is a perspective view illustrating an example of a combined chute 5ja in which three inclined chutes 5i are integrated, and FIG. 3B is a combined chute in which four inclined chutes 5i are integrated. It is a perspective view which shows an example of 5jb. In this example, edge portions 54 and 55 are provided on both side portions of the united chutes 5ja and 5jb to prevent the object to be weighed from jumping out.

  As shown in FIG. 1 (a), each united chute 5 j is provided with mounting brackets (hooks) 14 at both upper ends, and the mounting brackets 14 are attached to mounting portions 13 fixed to the support legs 12. It is done. Each united chute 5j is supported by two mounting brackets 14 hooked on the pin 13a of the mounting part 13 and a support bar 15 (FIG. 2) mounted on the mount 11 coming into contact with the united chute 5j from the side. Has been.

  The upper chute 5 may be configured by arranging a plurality of single inclined chutes 5i (the same number as the weighing hopper 4), but the upper chute 5 is configured by the united chute 5j as described above. However, when attaching or removing the upper chute 5 during cleaning or the like, the number of attached and detached chute can be reduced.

  FIG. 4 is a schematic plan view of one arbitrary weighing hopper 4, one inclined chute 5 i corresponding thereto, and the collective funnel 6 as seen from above. In FIG. 4, P is a central axis of the combination weigher (a vertical axis passing through the center of the combination weigher), and a vertical axis passing through the center of the collective funnel 6. In this case, the vertical axis passes through the center of a circle that is an array of 14 weighing hoppers 4. M is an object to be weighed (for example, a wiener). The collective funnel 6 is configured such that the inner surface of the object to be weighed slides along the side surface of the inverted truncated cone shape.

  All the inclined chutes 5i have the same configuration, and each inclined chute 5i is disposed to be inclined from the outer peripheral side of the combination weigher toward the central axis (P). And the cross-sectional shape perpendicular | vertical with respect to an inclination direction (in other words, cross-sectional shape perpendicular | vertical to the below-mentioned valley line 51) S is comprised by the L-shape. Here, the L-shape is such that one end of each of the long first side A and the short second side B is connected to each other, and the first side A and the short second side B form a predetermined angle Z. The predetermined angle Z is not limited to 90 degrees.

  The inclined chute 5i has a cross-sectional shape S across a bend line (hereinafter referred to as “valley line”) 51 connecting L-shaped corners (corner portions) of an arbitrary cross-sectional shape S from the upper end side to the lower end side. The plate-like first slope portion 52 forming the first side A and the plate-like second slope portion 53 forming the second side B are provided. The first inclined surface portion 52 and the second inclined surface portion 53 are arranged so that the surface on the side where the angle formed by the first inclined surface portion 52 and the second inclined surface portion 53 becomes an inferior angle (predetermined angle Z) becomes the upper surface on which the object to be measured slides. Both of these slope portions 52 and 53 are gradually narrowed from the upper end to the lower end of the inclined chute 5i. The valley line 51 is a boundary line between the first slope part 52 and the second slope part 53, and is a line segment that extends linearly (straightly).

  The lower end of the inclined chute 5i is positioned on the peripheral edge of the upper opening 6a of the collecting funnel 6, and the extended line 51e of the valley line 51 intersects the central axis P (that is, as shown in FIG. The extension line 51e is arranged so as to pass through the central axis P when viewed.

  All the weighing hoppers 4 have the same configuration, and each weighing hopper 4 has a cylindrical hopper body 41 having a substantially rectangular horizontal section, and opens and closes an opening at the bottom of the cylindrical hopper body 41. A pair of discharge gates 42 are attached to be openable and closable. The hopper body 41 includes two side walls 41a and 41b that are arranged in the row direction of the weighing hopper 4 and face each other, and two side walls 41c and 41d that connect the two side walls 41a and 41b. It is comprised so that the space | interval of the side walls 41a and 41b may be longer than the length of the longitudinal direction of the rod-shaped to-be-measured object M. FIG. The pair of discharge gates 42 is provided such that the opening / closing direction (see the arrow in FIG. 2) is the radial direction (inside / outside direction) of a circle that is an arrangement shape of the weighing hoppers 4. When the pair of discharge gates 42 are closed, the object to be weighed M is held in a horizontally long posture immediately above the holdable position portion m1, which is the deepest portion where the pair of discharge gates 42 are in contact with each other. In other words, the object to be weighed M is held by the weighing hopper 4 in a posture (horizontal posture) in which the longitudinal direction thereof is a horizontal direction perpendicular to the radial direction of the circle that is an array of the weighing hoppers 4.

  Such a configuration is the same for the supply hopper 3. The supply hopper 3 has a cylindrical hopper body 31 having a substantially rectangular horizontal cross section, and opens and closes an opening at the bottom of the cylindrical hopper body 31. A pair of discharge gates 32 is attached so as to be openable and closable (see FIG. 2), and the objects M to be weighed supplied from the linear feeder 2 to the supply hopper 3 are arranged in the longitudinal direction of the supply hoppers 3. It is held by the supply hopper 3 in a posture (horizontal posture) in a horizontal direction orthogonal to the radial direction of a certain circle.

  In each of the inclined chutes 5i, the valley line 51, which is the boundary line between the first and second inclined surface portions 52 and 53, deviates from the center Q of the weighing hopper 4 (= center of the holdable position portion m1) in plan view. It is arranged so as to be closer to one side (here, the right side). In other words, the weighing hopper 4 is disposed such that its center Q is located directly above the wide first slope portion 52. This means that the weighing hopper 4 immediately above the inclined chute 5i and the holdable position portion m1 are arranged close to the first inclined surface portion 52 side.

  FIG. 5 and FIG. 6 are perspective views showing an example of temporal changes in the posture of one object M discharged from any one weighing hopper 4. FIGS. 5 and 6 show changes in the posture of the measurement object M falling from the weighing hopper 4 according to the experimental results. In this experiment, a wiener having a thickness (diameter) of about 20 mm and a length of about 80 mm was used. Here, for the sake of convenience, the left and right sides are determined as shown in FIGS.

  As described above, the object to be weighed M is held in the weighing hopper 4 in the above horizontal posture, and when the discharge gate 42 of the weighing hopper 4 is opened, the object to be weighed M falls in a horizontal posture.

  In the present configuration example, when the object to be weighed M is discharged from the weighing hopper 4 in a horizontal posture and falls straight in the state of the horizontal posture, the left side portion e1 of the object to be weighed M is inclined chute 5i before the right side portion e2. Is configured to reach. That is, the planned fall position portion m2 of the weighing object M, which is a portion immediately below the holdable position portion m1 of the weighing hopper 4 in the inclined chute 5i (here, the weight is planned to be ignored while ignoring the thickness of the weighing object M). (Referred to as the position portion) is higher in the first and second slope portions 52, 53 as the distance from the valley line 51 increases. The center Q of the weighing hopper 4 (= the center of the holdable position portion m1) The weighing hopper 4 and the inclined chute 5i are disposed such that the measuring hopper 4 is positioned immediately above the second inclined surface portion 52.

  Therefore, when the left portion e1 reaches the first slope portion 52 before the right portion e2 of the workpiece M reaches the second slope portion 53, as shown in FIG. → M2 → M3 → M4, the right part e2 slides faster than the left part e1, and the vertical position with the right part e2 at the head (the longitudinal direction of the weighing object M moves as it slides) And the slant chute 5i is slid down, and the collective funnel 6 is slid down in that position and discharged from the discharge port 6b. Thus, the posture of the object to be measured M changes because the left part e1 and the first slope part 52 are brought into contact with the sloped chute 5i (first slope part 52) before the right part e2 of the left part e1. This is considered to be due to the fact that the first force occurs before the falling speed of the left portion e1.

  The object to be weighed M (here, the wiener) is not a straight bar shape but a slightly bent shape, and all the objects to be weighed M are not necessarily the same shape. In addition, since the weighing object M dropped from the supply hopper 3 is held by the weighing hopper 4, the holding position of the weighing object M in the weighing hopper 4 is slightly different depending on the weighing hopper 4 or the weighing object M. Therefore, even if configured as described above, the left portion e1 does not necessarily reach the inclined chute 5i before the right portion e2.

  For example, it is conceivable that the left and right side portions e1 and e2 of the object to be weighed M reach the inclined chute 5i at the same time, so an experiment was conducted in this case. That is, when the object M is dropped so that the right side portion e2 reaches the second slope portion 53 at the same time as the left side portion e1 reaches the first slope portion 52, as shown in FIG. On the contrary, the object to be weighed M slides faster on the inclined chute 5i in the left part e1 than the right part e2 on the inclined chute 5i as in M11 → M12 → M13 → M14. The slanted chute 5i was slid down in the vertical orientation at the top, and the collective funnel 6 was slid down in that posture and discharged from the discharge port 6b. The posture of the object to be weighed M changes in this way when the both side parts e1 and e2 of the object to be weighed M reach the first and second inclined surfaces 52 and 53 at the same time. This is probably because the angle formed by M and the first slope portion 52 is different from the angle formed by the object M and the second slope portion 53 in the right portion e2.

  Here, it is assumed that the inclined chute 5i has two slope portions 52 and 53 constituting the shape that are symmetrical about the valley line 51 (that is, a V-shape whose cross-sectional shape is symmetrical), and the valley line Consider a case in which 51 is configured to pass directly under the center Q of the weighing hopper 4 and the extended line of the valley line 51 passes through the central axis P in plan view. In this case, the to-be-measured object M discharged in a horizontal posture from the weighing hopper 4 easily reaches the slope portions 52 and 53 at the left and right side portions e1 and e2, and the side portions e1 and e2 at the slope portions 52 and 53. , The angle between the object to be weighed M and the first slope portion 52 and the angle between the object to be weighed M and the second slope portion 53 are the same or substantially the same, It is difficult to roll down the inclined chute 5i and take a vertical posture. On the other hand, in the case of this configuration example, as described above, even when both side portions e1 and e2 of the object to be measured M reach the first and second slope portions 52 and 53 at the same time, It becomes a vertical orientation and is discharged from the inclined chute 5i.

  Further, in this configuration example, even if the right part e2 of the object M discharged from the weighing hopper 4 may reach the inclined chute 5i before the left part e1, in that case In this case, since a force is generated first between the right side portion e2 and the first slope portion 52, the left side portion e1 falls earlier than the right side portion e2, and as it falls, the left side portion e1 starts in the vertical direction. The inclined chute 5i slides down in the posture, and the collective funnel 6 slides down in that posture and is discharged from the discharge port 6b.

  As described above, in the present configuration example, the measurement object M sliding down the inclined chute 5i is always discharged in the vertical orientation along the valley line 51, and when sliding down the collective funnel 6, As shown in FIG. 4, the center of the discharge port 6b of the collecting funnel 6 is located on the extension line 51e of the valley line 51 in plan view as shown in FIG. The extension line 51e of the valley line 51 intersects with the central axis P), so that the object to be weighed M does not slide down on the collection funnel 6 in a spiral manner, and the center of the discharge port 6b of the collection funnel 6 Slide straight down toward. Therefore, it is possible to avoid a discharge delay (an increase in discharge time) due to the object M sliding down on the collecting funnel 6 in a spiral shape.

  An outline of the overall operation of the combination weigher configured as described above will be described.

  First, the object to be weighed M is conveyed above the combination weigher by a supply device (not shown) and placed on the dispersion feeder 1. Then, it is dispersed radially by the vibration of the dispersion feeder 1 and sent to each linear feeder 2. Further, the linear feeder 2 is vibrated toward the tip of the linear feeder 2 by the vibration of the linear feeder 2, discharged from the tip of the linear feeder 2 and supplied to the supply hopper 3. When the weighing hopper 4 located below each supply hopper 3 is empty, the object M to be weighed in each supply hopper 3 is supplied to the weighing hopper 4. The control device 8 performs the combination process described above, and causes the weighing hopper 4 selected as the discharge combination to discharge the object M to be weighed. The object M discharged from the weighing hopper 4 slides down on the upper chute 5 (inclined chute 5i), further slides down the collective funnel 6 and is put into the collective hopper 7, and is temporarily stored in the collective hopper 7. For example, it is discharged to a packaging machine. The above operation is repeated.

  In the above operation, the linear feeder 1 is set so as to supply the objects to be weighed M to the supply hopper 3, for example, one by one. In order to perform the combination processing, the target weight is n (n is, for example, 4). When the weight of the object to be weighed (predetermined value of about 8) (predetermined weight value) is set, n weighing hoppers 4 are normally selected for the discharge combination, and n objects to be weighed M is discharged at the same time and packed in a packaging machine.

  In the present embodiment, as described above, the object to be weighed M that is discharged from the weighing hopper 4 and slides down on the inclined chute 5i has a vertical posture on the inclined chute 5i, and the collective funnel 6 in the vertical posture. And is discharged from the discharge port 6b. That is, since all of the plurality of objects M selected for the discharge combination are discharged from the discharge port 6b of the collective funnel 6 in a vertical orientation, the objects M are entangled and clogged at the discharge port 6b. Can be prevented.

  Further, in the present embodiment, since the weighing object M is held in the horizontally long posture in the supply hopper 3 and the weighing hopper 4, the weighing object M is stretched in the supply hopper 3 and the weighing hopper 4. Can be prevented from being discharged.

  Further, in the collective hopper 7, the objects to be weighed M are held in a vertically long posture, but in the collective hopper 7, several objects to be weighed M are held, so that several objects to be weighed M are stored in the collective hopper 7. In addition, when the discharge gate 71 of the collecting hopper 7 is opened, a gap is easily generated between the objects to be weighed M, and the objects are easily discharged. Low.

  As described above, in this combination weigher, it is elastic like a wiener and can measure and smoothly discharge an elongated rod-shaped object M.

  Note that the collecting hopper 7 is not necessarily required, and the objects to be weighed discharged from the discharge port 6b of the collecting funnel 6 may be directly input to the input port of the packaging machine.

  Further, the inclined chute 5i may be further extended downward, and the object to be weighed discharged from the inclined chute 5i may be directly input to the input port of the packaging machine.

  Further, in the present embodiment, each of the inclined chutes 5i is constituted by the wide first slope portion 52 and the narrow second slope portion 53, whereby the arrangement interval of the weighing hoppers 4 can be reduced (that is, the weighing is performed). It is not necessary to increase the arrangement interval of the hoppers 4). In other words, in each inclined chute 5i, the second inclined surface portion 53 can be configured to have the same width as the wide first inclined surface portion 52. In this case, as in the present embodiment, an object to be weighed is used. In order for the valley line 51 to be positioned away from the center Q of the weighing hopper 4 in plan view so that M is in a vertical orientation and discharged from the inclined chute 5i, each inclined chute 5i becomes larger, If the interval between the weighing hoppers 4 is not increased, a predetermined number of weighing hoppers 4 may not be arranged. As a result, the diameter of the combination weigher becomes large and the combination weigher becomes large.

  INDUSTRIAL APPLICABILITY The present invention is useful as a combination weigher that can measure and smoothly discharge a slender bar-like object having elasticity like a wiener.

M object to be weighed P center axis Q center of weighing hopper 4 weighing hopper 5 upper chute 5i inclined chute 51 valley line 51e extension line 52 first slope part 53 second slope part 6 collective funnel

Claims (3)

A plurality of hoppers that are arranged in a circle and each temporarily hold a bar-shaped object to be fed and then ejected,
Each of the objects to be weighed discharged from the hopper is received at the upper end portion, and is slid down in a direction toward a position directly below the center of the circle that is an array of the hoppers, and discharged from the lower end below the hopper. A plurality of inclined chutes provided at an inclination;
A combination means for obtaining a combination of the hoppers for discharging the objects to be weighed based on a predetermined combination condition;
The hopper
The rod-shaped object to be weighed is held in a posture in which the longitudinal direction thereof is a horizontal direction perpendicular to the radial direction of the circle which is an array of the hoppers, and is discharged in that posture.
The inclined chute is
The cross-sectional shape perpendicular to the inclination direction is a shape composed of a first side and a second side connected to one end of each, and the plate-like first slope portion forming the first side and the second side. A plate-like second slope portion that forms a side, and is arranged so that a boundary line between the first slope portion and the second slope portion in a plan view is located away from the center of the hopper.
Combination scale. The first side and the second side of the cross-sectional shape of the inclined chute comprises a long side and a short side having different lengths,
The center of the hopper is configured to be located immediately above the first slope portion forming the long side.
The combination weigher according to claim 1. A collecting funnel having a side shape of an inverted truncated cone for sliding the objects to be weighed discharged from the lower ends of all the inclined chutes and discharging them from the lower discharge port;
In plan view, the extended line of the boundary line of all the inclined chutes is configured to pass through the center of the outlet of the collecting funnel,
The combination weigher according to claim 1 or 2.

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