JP2004093463A - Combination weighing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combination weighing apparatus suppressing the generation of chips and dust of weighed matter, surely removing the chips and dust of the weighed matter, and preventing the mixing of a lump of additives to the weighed matter. <P>SOLUTION: The rod-shaped weighed matter is respectively weighed by a plurality of weighing hoppers 13, the combination of the weighing hoppers 13 of which a total weight value achieves a target value, is selected, the weighed matter is discharged from the selected weighing part, and the discharged weighed matter are collected by a collection chute part 400. The collection chute part 400 has inclined upper chute 22 and lower chute 31 on which the weighed matter discharged from the weighing hoppers 13 glide, and a gap is formed therebetween so that the chips and dust of the weighed matter are naturally dropped from the gap 28. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a combination weighing machine that obtains an object to be weighed having a predetermined target weight by combining the weights of objects to be weighed supplied to a plurality of weighing units.
[0002]
[Prior art]
Conventionally, in the food industry and the like, a combination weighing machine has been used to obtain an object to be weighed having a target weight. In a combination weighing machine, an object to be weighed is distributed and supplied to a plurality of weighing units arranged in a circle, and the weighing object having a target weight can be obtained by combining the weights of the objects to be weighed supplied to the plurality of weighing units. it can.
[0003]
However, when handling a fragile and friable object such as a rice cracker or a rice cracker in a combination weighing machine, fragments or debris are generated due to collision between the objects to be weighed. When a normal weighing object is packaged and sold together with fragments and waste, the commercial value decreases.
[0004]
Therefore, there has been proposed a combination weighing machine that can remove pieces or debris of an object to be measured and maintain the commercial value of the object to be weighed (for example, see Patent Document 1).
[0005]
FIG. 6A is a front view of a conventional combination weighing machine, and FIG. 6B is a perspective view of a collecting chute in the combination weighing machine of FIG. 6A.
[0006]
As shown in FIG. 6A, in the combination weighing machine 501, the objects to be weighed supplied from the commodity supply path 502 are distributed and supplied to a plurality of weighing units 512, each of which is weighed, and the weighing result is subjected to a combination calculation. Then, an optimum combination that satisfies a predetermined target weight is selected from the calculation results. Then, the objects to be weighed in the selected weighing unit 512 are discharged downward, and the discharged objects to be weighed are collected by the collecting chute 523 and then supplied to a packaging device or the like (not shown).
[0007]
As shown in FIG. 6B, the collecting chute 523 of the combination weighing machine has a double structure of a net-like main collecting chute 524 and a dust chute 525 surrounding the main collecting chute 524 from outside. Thereby, fragments and debris generated from the object to be weighed pass through the mesh of the main collecting chute 524, slide along the inner surface of the dust chute 525, and are discharged to the outside from the dust discharge port 526 as shown by the arrow Z. You.
[0008]
As described above, according to the combination weighing machine 501 shown in FIGS. 6A and 6B, it is possible to separate pieces or debris of the object to be weighed from normal objects to be weighed, and to package the object to be weighed. Since fragments or debris do not sometimes enter, it is possible to prevent a reduction in commercial value.
[0009]
[Patent Document 1]
Japanese Utility Model Publication No. 4-24419
[Problems to be solved by the invention]
However, in the conventional combination weighing machine 501, when pieces or debris generated by mutual collision of the bar-shaped objects to be weighed, such as stick confectionery, are larger than the mesh of the main collecting chute 524 of the combination weighing machine 501, The debris cannot be removed, and fragments or debris are mixed in when the object to be weighed is packaged, thereby deteriorating the commercial value.
[0011]
In addition, a powder seasoning (seasoning) or the like is often added to the object to be weighed. For this reason, the seasoning may continue to adhere to the mesh of the main collecting chute 524, become a lump after a long time passes, and may be mixed in at the time of packaging the object to be weighed.
[0012]
Furthermore, the mesh of the main collecting chute 524 has a high possibility of damaging the object to be weighed, further generating fragments or debris of the object to be weighed, and the fragments or debris biting into the seal portion when packaging the object to be weighed, There is also a problem that the bag cannot be sealed.
[0013]
An object of the present invention is to suppress the generation of pieces or debris of an object to be weighed and to surely remove the pieces or debris of an object to be weighed, thereby preventing a lump of an additive from being mixed into an object to be weighed. The object of the present invention is to provide a combination weighing machine capable of performing the following.
[0014]
[Means for Solving the Problems]
(First invention)
The combination weighing machine according to the present invention includes a plurality of weighing units that respectively weigh the objects to be weighed, and a collecting unit that collects the objects to be weighed discharged from the weighing unit selected from the plurality of weighing units. The section has an inclined runway on which an object to be weighed discharged from the selected weighing section slides, and a gap is provided in the runway.
[0015]
In the combination weighing machine according to the present invention, the objects to be weighed are respectively weighed by the plurality of weighing units, and the objects to be weighed discharged from the weighing unit selected from the weighing units are collected by the collecting unit.
[0016]
In this case, the collecting section has an inclined runway on which the objects to be weighed discharged from the measuring section slide, and a gap is provided in the runway. As a result, the normal weighing object runs on the runway without falling from the gap, and the fragments and debris fall naturally from the gap. Therefore, it is possible to reliably remove pieces and debris at the collecting portion, and to collect only normal objects to be weighed. Further, since it is not necessary to form the runway with the net material, the object to be weighed is not damaged during the run and the generation of fragments and debris due to the damage can be suppressed. Further, since the mass of the additive falls naturally in the gap, it is possible to prevent the mass of the additive from being mixed into the object to be weighed.
[0017]
(Second invention)
A combination weighing machine according to a second invention is the combination weighing machine according to the first invention, further comprising a first receiving portion below the gap for receiving a falling object from the gap.
[0018]
In this case, the fragments and debris of the object to be weighed and the lump of the additive fall from the gap to the first receiving portion. Therefore, the worker can easily collect the fragments and the debris and the lump of the additive.
[0019]
(Third invention)
A combination weighing machine according to a third invention is the combination weighing machine according to the first and second inventions, further comprising an adjusting unit for adjusting the length of the gap.
[0020]
In this case, the length of the gap is adjusted by the adjustment unit so that the normal object to be weighed slides on the runway without falling from the gap according to the size of the object to be weighed, and the fragments and debris fall naturally from the gap. can do. Therefore, objects of various sizes can be weighed.
[0021]
(Fourth invention)
A combination weighing machine according to a fourth invention is the combination weighing machine according to any one of the first to third inventions, wherein each of the plurality of weighing units is openable and closable on an outer container and a bottom of the outer container. Including a provided door and an inner container inserted into the outer container, the runway is arranged to extend from below the inner container, and falls from the outside of the inner container in the outer container on both sides of the runway. It has a second receiving portion for receiving an object.
[0022]
In this case, the normal weighing object and some fragments and debris supplied into the inner container in the outer container run on the runway, and the remaining fragments and debris supplied outside the inner container in the outer container. Are held by the second receiving portions provided on both sides of the runway. As a result, the amount of chips and debris supplied to the runway together with a normal object to be weighed is reduced, so that the fragments and debris can be reliably removed in the gap.
[0023]
(Fifth invention)
A combination weighing machine according to a fifth invention is the combination weighing machine according to any one of the first to fourth inventions, wherein the length of the gap in the sliding direction of the object is shorter than the length of the object. Things.
[0024]
In this case, since the length of the gap in the sliding direction of the object to be weighed is shorter than the length of the object to be weighed, only fragments and debris of the object to be weighed are removed from the gap without naturally dropping a normal object to be weighed from the gap. Can be dropped naturally.
[0025]
(Sixth invention)
A combination weighing machine according to a sixth invention is the combination weighing machine according to any one of the first to fifth inventions, wherein the plurality of weighing units are arranged on a circumference centered on a vertical axis, and assembled. A plurality of first runways inclined obliquely downward from below the plurality of measuring units toward the vertical axis; and a substantially conical inner surface disposed below the first runway and having a gradually decreasing diameter. And a gap provided between the first runway and the second runway.
[0026]
After the objects to be weighed discharged from the plurality of weighing sections slide on the plurality of first runways inclined obliquely downward, then slide on the substantially conical inner surface of the second runway having a gradually decreasing diameter. Are gathered by In this case, since a gap is provided between the first runway and the second runway, pieces and debris of the object to be weighed and a lump of additive are removed from the first runway and the second runway. It can be reliably removed by allowing it to fall naturally in the gap between.
[0027]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a combination weighing machine according to an embodiment of the present invention will be described.
[0028]
FIG. 1 is a schematic diagram illustrating a configuration of a combination weighing machine according to an embodiment of the present invention.
The combination weighing machine 1 shown in FIG. 1 includes a weighing section 100 and a collecting chute section 400. Collecting chute section 400 includes upper chute section 200 and lower chute section 300. Further, the main body A of the combination weighing machine 1 is supported by a support B, the support B is supported by a pedestal D, and the mount D is supported by a support C.
[0029]
The measuring section 100 is provided on the main body A. The weighing unit 100 includes a circular dispersion trough 10, a plurality of radiation troughs 11, a plurality of pool hoppers 12, and a plurality of weighing hoppers 13. The commodity supply path 2 is arranged above the dispersion trough 10. The plurality of radial troughs 11 are radially arranged around the dispersion trough 10. The plurality of pool hoppers 12 are respectively arranged outside and below the plurality of radiation troughs 11. Gates 12a and 12b are provided at the lower end opening of each pool hopper 12 so as to be freely opened and closed. The plurality of weighing hoppers 13 are arranged below the plurality of pool hoppers 12, respectively. A gate 13a is provided at the lower end opening of each weighing hopper 13 so as to be freely opened and closed.
[0030]
The upper chute part 200 and the lower chute part 300 are provided on the gantry D. The upper chute 200 includes a plurality of lees receiving upper chutes 21 and a plurality of upper chutes 22. The plurality of lees receiving upper chutes 21 are respectively arranged below the plurality of weighing hoppers 13. An openable and closable shutter 24 is provided at the lower end opening of each lees receiving upper chute 21. The plurality of upper chutes 22 are arranged so as to be continuous with the plurality of lees receiving upper chutes 21, respectively. An openable and closable shutter 25 is provided at the lower end opening of the upper chute 22.
[0031]
The lower chute section 300 includes a lower chute 31 and a dust receiver 30. The lower chute 31 has a substantially conical shape whose diameter gradually decreases from the upper part to the lower part. The waste receptacle 30 is arranged annularly around the lower chute 31. A shutter 32 that can be opened and closed is provided below the lower chute 31. The details of the collecting chute section 400 will be described later.
[0032]
Next, the operation of the combination weighing machine 1 of FIG. 1 will be described. Here, it is assumed that a bar-shaped object is weighed.
[0033]
First, a rod-shaped object to be weighed is continuously supplied from the commodity supply path 2 to the dispersion trough 10. The dispersion trough 10 vibrates in a vertical direction while aligning the bar-shaped objects to be measured in one direction, and conveys the objects to be measured to a plurality of radiation troughs 11. Each radiation trough 11 vibrates in the vertical direction and throws a bar-shaped object to be measured into the pool hopper 12. When the gates 12a and 12b of each pool hopper 12 are opened at a predetermined timing, an object to be weighed is put into the lower weighing hopper 13. Each of the weighing hoppers 13 measures the weight of an object to be weighed that has been input from the pool hopper 12.
[0034]
A combination of a plurality of weighing hoppers 13 is selected such that the total of the weight values of the objects measured by the weighing hoppers 13 becomes a predetermined target weight value. When the gates 13a of the selected weighing hoppers 13 are opened almost simultaneously, the objects to be weighed in the selected weighing hoppers 13 are dropped onto the lees receiving upper chutes 21, respectively. Thereby, the object to be weighed slides on the lees receiving upper chute 21 and the upper chute 22.
[0035]
When the shutters 24 and 25 are closed, the objects to be weighed stop sliding at the shutters 24 and 25, respectively. When the shutters 24 and 25 are opened, the object to be weighed slides on the lees receiving upper chute 21 and the upper chute 22 in order, further slides on the lower chute 31 and stops at the shutter 32. When the shutter 32 is opened, the object to be weighed is supplied to a packaging device (not shown).
[0036]
Next, FIG. 2 is an enlarged schematic view of the collecting chute 400 of FIG.
An upper chute 22 is connected to the lower end of the lees receiving upper chute 21 of the upper chute section 200 so that the object 7 can smoothly slide. In addition, a shutter 24 that can be opened and closed is provided at the lower end opening of the lees receiving upper chute 21. When the shutter 24 is opened in the direction of the arrow X by the shutter opening / closing device 24M, the object 7 can be slid from the lees receiving upper chute 21 to the upper chute 22.
[0037]
A shutter 25 that can be opened and closed is also provided at the lower end opening of the upper chute 22. When the shutter 25 is opened in the direction of the arrow X by the shutter opening / closing device 25M, the object 7 can slide from the upper chute 22 to the lower chute 31.
[0038]
Here, a fixed gap 28 is formed between the upper chute 22 and the lower chute 31. The length of the gap 28 is determined according to the object 7 slid on the upper chute 22. Therefore, the length of the gap 28 can be adjusted as described later.
[0039]
The normal weighing object 7 slides on the lower chute 31 from the upper chute 22 through the gap 28 and is supplied to the packaging device, and the fragments 8 or debris 9 of the weighing object 7 are transferred from the upper chute 22 to the lower chute 31. It cannot be reached and falls naturally from the gap 28 downward. The pieces 8 or chips 9 of the weighing object 7 that has naturally fallen downward are accumulated in the chip receiver 30 provided around the lower chute 31 and removed by the operator.
[0040]
In addition, chunks of the powdered seasoning and the accumulated seasoning separated from the object to be weighed also fall naturally downward from the gap 28 and accumulate in the waste receptacle 30.
[0041]
FIG. 3 is a schematic view showing an example of the adjustment mechanism of the gap 28. 3A shows an initial state before adjustment of the gap 28, FIG. 3B shows a state where the length of the gap 28 is increased, and FIG. 3C shows a state where the length of the gap 28 is shortened. Is shown.
[0042]
The adjustment mechanism 55 for the gap 28 shown in FIG. 3 includes a rotating shaft 50, a gear 51, and a rack 52. As shown in FIG. 3A, a rack 52 is attached to the outer surface of the upper chute 22, and a gear 51 is attached to the rotating shaft 50 so as to mesh with the rack 52. The rotation shaft 50 can be manually rotated by an operator, for example.
[0043]
For example, as shown in FIG. 3B, when the rotating shaft 50 is rotated clockwise (in the direction of arrow Y), the upper chute 22 moves diagonally upward, and the length L of the gap 28 is longer. Become. On the other hand, as shown in FIG. 3C, when the rotating shaft 50 is rotated counterclockwise (in the direction of arrow Z), the upper chute portion 22 moves diagonally downward, and the length L of the gap 28 becomes Be shorter.
[0044]
With such an adjusting mechanism 55, the length L of the gap 28 can be adjusted to be shorter than the length of the object to be weighed. Thereby, a normal object to be weighed can be supplied from the upper chute portion 22 to the lower chute 31, and the fragments and debris can be dropped from the gap 28.
[0045]
According to the adjusting mechanism 55, the length L of the gap 28 can be easily adjusted. Therefore, even when objects of different lengths are weighed, the length L of the gap 28 can be easily adjusted to Pieces or debris of the weighing object can be separated from a normal weighing object. Further, the length L of the gap 28 can be adjusted by moving only the position of the upper chute 22 without moving the lees receiving chute 21 and the measuring section 100 up and down.
[0046]
In the present embodiment, the length of the gap 28 is adjusted by manually rotating the rotating shaft 50. However, the present invention is not limited to this. The length of the gap 28 may be adjusted by using a rotary drive device such as a motor by setting the adjustment amount according to (c). Further, the length of the gap 28 may be adjusted by moving the position of the upper chute 22 by opening a long hole in the upper chute 22 and fixing the upper chute 22 with bolts.
[0047]
FIG. 4 is a diagram mainly showing in detail the cake receiving chute 21 in the combination weighing machine of FIG. FIG. 4A is a front view of the pool hopper 12, the weighing hopper 13, and the cake receiving upper chute 21, FIG. 4B is a perspective view of the cake receiving chute 21, and FIG. It is.
[0048]
First, the pool hopper 12 shown in FIG. 4A has a rectangular tube shape, and gates 12a and 12b (see FIG. 1) are provided at the lower end opening so as to be freely opened and closed. Further, a substantially cylindrical auxiliary hopper 12i whose diameter gradually decreases from the upper portion to the lower portion is inserted into the pool hopper 12 to hold the object to be weighed in a vertical state. The weighing hopper 13 has a rectangular cylindrical shape, and a gate 13a is provided at the lower end opening so as to be freely opened and closed. A substantially cylindrical auxiliary hopper 13i whose diameter gradually decreases from the upper portion to the lower portion is inserted into the weighing hopper 13 to hold the object to be weighed in a vertical state.
[0049]
Next, as shown in FIG. 4 (b), the lees receiving chute 21 includes a sliding part 81 and a lees receiving part 82 which protrudes to both sides from the upper half of the gliding part 81.
[0050]
The sliding portion 81 includes both side surfaces 81a and a sliding surface 81b, and has a substantially U-shaped cross section. The sliding surface 81b is inclined with respect to the horizontal direction.
[0051]
The cake receiving portion 82 includes a cake receiving surface 82c extending in the horizontal direction, a back surface 82b extending substantially parallel to the sliding surface 81b, and side surfaces 82a extending substantially parallel to both side surfaces 81a.
[0052]
The width of the sliding surface 81b of the sliding portion 81 of the cake receiving chute 21 is substantially equal to the diameter of the lower end of the auxiliary hopper 13i of the weighing hopper 13, and the distance between the both side surfaces 82a of the cake receiving portion 82 of the cake receiving chute 21 is It is preferable that the width is smaller than the width of the lower end opening 13a of the weighing hopper 13.
[0053]
Next, the operation of the lees receiving chute 21 in the combination weighing machine of FIG. 4 will be described.
[0054]
When the piece 8 or debris 9 of the object to be weighed is transported to the pool hopper 12 by the radiation trough 11 of FIG. 1 together with the normal object to be weighed, the normal object to be weighed and some pieces and debris are removed from the pool hopper 12. Is supplied to the auxiliary hopper 12i inserted in the auxiliary hopper 12i. The remaining pieces 8 or debris 9 are put into the pool hopper 12 outside the auxiliary hopper 12i.
[0055]
Then, when the gates 12a and 12b of the pool hopper 12 are opened, normal objects to be weighed in the auxiliary hopper 12a and some pieces and debris are thrown into the auxiliary hopper 13i in the weighing hopper 13. At the same time, the pieces 8 or debris 9 outside the auxiliary hopper 12 i in the pool hopper 12 are thrown into the outside of the auxiliary hopper 13 i in the measuring hopper 13.
[0056]
Then, when the gate 13a of the weighing hopper 13 is opened, the normal weighing object in the auxiliary hopper 13i and some pieces and debris are supplied to the sliding portion 81 of the lees receiving chute 21. On the other hand, the pieces 8 and the debris 9 outside the auxiliary hopper 13i in the weighing hopper 13 are supplied to the lees receiving portion 82 of the lees receiving chute 21 and held by the lees receiving surface 82c.
[0057]
Here, another example of the lees receiving chute will be described for comparison. On the other hand, FIG. 5 is a diagram showing another example of the lees receiving chute in detail.
[0058]
FIG. 5A is a front view of a pool hopper, a weighing hopper, and a lees receiving chute, FIG. 5B is a perspective view of the lees receiving chute, and FIG. 5C is a cross-sectional view of the lees receiving chute.
[0059]
The pool hopper 12, the auxiliary hopper 12i, the weighing hopper 13, and the auxiliary hopper 13i shown in FIG. 5A are the same as the pool hopper 12, the auxiliary hopper 12i, the weighing hopper 13, and the auxiliary hopper 13i shown in FIG.
[0060]
As shown in FIG. 5 (b), the lower half of the lees receiving chute 71 includes both side surfaces 72a and a sliding surface 72b, and is formed in a substantially U-shaped cross section. The upper half portion of the cake receiving chute 71 is composed of both side surfaces 71a and a sliding surface 71b inclined with respect to both side surfaces 72a, and is formed in a substantially U-shaped cross section in which the width of both side surfaces 72a decreases from the upper part to the lower part. .
[0061]
In the cake receiving chute 71 of FIG. 5, when the gate 13a of the weighing hopper 13 is opened, the normal object to be weighed and some pieces and debris in the auxiliary hopper 13i are supplied to the cake receiving chute 71 and weighed. Fragments 8 or debris 9 outside the auxiliary hopper 13i in the hopper 13 are also supplied to the lees receiving chute 71. As a result, many pieces 8 and debris 9 are supplied to the upper chute 22 in FIG. 2 together with a normal object to be weighed.
[0062]
On the other hand, in the lees receiving chute 21 shown in FIG. 4, a normal object to be weighed and some pieces and debris in the auxiliary hopper 13i of the weighing hopper 13 are supplied to the upper chute 22 in FIG. The fragments 8 and the debris 9 outside the auxiliary hopper 13 i in the 13 are held by the lees receiving surface 82 c and are not supplied to the upper chute 22.
[0063]
Therefore, only the normal object to be weighed and a small amount of chips and chips are supplied to the upper chute 22, and the small chips or chips are reliably discharged from the gap 28 between the upper chute 22 and the lower chute 31.
[0064]
In the combination weighing machine 1 according to the present embodiment, the fragments and debris of the object to be weighed fall naturally from the gap 28 between the upper chute 22 and the lower chute 31, and thus the fragments and debris are mixed in at the time of packaging the object to be weighed. Is prevented, and the commercial value is maintained.
[0065]
In particular, by providing the lees receiving chute 21 of FIG. 4, the amount of fragments and debris supplied to the upper chute 22 together with the normal object to be weighed is reduced, so that the gap between the upper chute 22 and the lower chute 31 is reduced. At 28, fragments and debris are reliably removed.
[0066]
Further, since the powder seasoning and the lump of the accumulated seasoning separated from the object to be weighed fall naturally from the gap 28 between the upper chute 22 and the lower chute 31, the powder seasoning and the accumulated seasoning fall. The lump of the material is prevented from being mixed during the packaging of the object to be weighed.
[0067]
Further, meshes are not used for the upper chute 21, the upper chute 22, the gap 28 and the lower chute 31 so that the objects to be weighed smoothly on the upper chute 21, the upper chute 22, the gap 28 and the lower chute 31. Since the object can be slid, the object to be weighed is not damaged at the time of sliding, and the generation of fragments and debris of the object to be weighed is prevented.
[0068]
In the present embodiment, the case where the lees receiving chute 21 is configured as a plane has been described. However, the present invention is not limited to this, and the sliding surface 81b may be formed to have a substantially semicircular cross section. Further, the sliding surface 81b of the lees receiving chute 21 may be subjected to processing such as embossing in order to reduce frictional resistance with an object to be weighed.
[0069]
In the combination weighing machine according to the present embodiment, the plurality of weighing hoppers 13 correspond to the plurality of weighing units and the outer container, and the plurality of cake receiving upper chutes 21 and the plurality of upper chutes 22 include the plurality of first runways. , The gate 13a corresponds to the door, the auxiliary hopper 13i corresponds to the inner container, the lower chute 31 corresponds to the second runway, the adjusting mechanism 55 corresponds to the adjusting section, and the dust receiver 30 corresponds to the The collecting part 82 corresponds to the second receiving part, and the collecting chute part 400 corresponds to the collecting part.
[0070]
【The invention's effect】
According to the present invention, the collecting section has an inclined runway on which the objects to be weighed discharged from the weighing section slide, and a gap is provided in the runway, so that a fragment of the objects to be weighed that slides on the runway is provided. And the debris can be reliably removed by allowing them to fall naturally in the gap. Further, since there is no need to change the sliding surface other than the gap, it is possible to suppress the generation of fragments and debris due to damage to the object to be weighed. Further, since the lump of the additive accumulated in the runway can be naturally dropped in the gap, it is possible to prevent the lump of the additive from being mixed into the object to be weighed.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a configuration of a combination weighing machine according to an embodiment of the present invention.
FIG. 2 is an enlarged schematic view of a collecting chute portion of FIG. 1;
FIG. 3 is a schematic view showing an example of a gap adjusting mechanism.
FIG. 4 is a view showing in detail a lees receiving chute in the combination weighing machine of FIG. 1;
FIG. 5 is a diagram showing another example of the lees receiving chute in the combination weighing machine in detail.
FIG. 6 is a front view of a conventional combination weighing machine and a perspective view of a collecting chute in the combination weighing machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Combination weighing machine 2 Merchandise supply path 7 Object 8 to be weighed 8 Pieces 9 Debris 10 Circular dispersion trough 11 Plural radiation troughs 12 Plural pool hoppers 12i, 13i Auxiliary hoppers 12a, 12b, Gate 13a Gate 13 Plural weighing hoppers 21 Plural Upper chute 22 of cakes Upper chute 24, 25, 32 Shutters 24M, 25M Shutter opening / closing device 28 Gap 30 Debris receiver 31 Lower chute 50 Rotary shaft 51 Gear 52 Rack 55 Adjustment mechanism 81 Sliding portion 81a Both side surfaces 81b Sliding surface 82 Cake receiving portion 82c Cake receiving surface 82b Back surface 82a Side surface 100 Measuring portion 200 Upper chute portion 300 Lower chute portion 400 Collecting chute portion

Claims (6)

A plurality of weighing units for weighing the objects to be weighed,
A collecting unit for collecting the objects to be weighed discharged from the weighing unit selected from the plurality of weighing units,
The combination weighing machine, wherein the collecting section has an inclined runway on which an object to be weighed discharged from the selected weighing section slides, and a gap is provided in the runway. The combination weighing machine according to claim 1, further comprising a first receiving portion below the gap for receiving a falling object from the gap. The combination weighing machine according to claim 1, further comprising an adjusting unit configured to adjust a length of the gap. Each of the plurality of weighing units,
An outer container,
A door provided on the bottom of the outer container so as to be openable and closable,
An inner container inserted into the outer container,
The runway is disposed so as to extend from below the inner container, and has a second receiving portion on both sides of the runway for receiving a falling object from outside the inner container in the outer container. The combination weighing machine according to claim 1. The combination weighing machine according to any one of claims 1 to 4, wherein a length of the gap in a sliding direction of the object is shorter than a length of the object. The plurality of measuring units are arranged on a circumference centered on a vertical axis,
The collecting unit is
A plurality of first runways that are inclined obliquely downward from below the plurality of measuring units toward the vertical axis;
A second runway disposed below the first runway and having a substantially conical inner surface of progressively smaller diameter;
The combination weigher according to any one of claims 1 to 5, wherein the gap is provided between the first runway and the second runway.

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