JPH0579889A - Combined-weight measuring method and apparatus - Google Patents

Abstract

PURPOSE:To supply and collect articles to measuring machines and disentangle the articles in a simple structure even when the articles are adhesive like sea tangles boiled in sweetened soy sauce according to a combined-weight measuring method whereby a combination of measuring machines among a plurality of measuring machines is selected so that the sum of the weight of the articles supplied to the measuring machines is the optimum weight. CONSTITUTION:A spiral body is provided in a first cylindrical body 10 which feeds a to-be-measured object supplied from a second cylindrical body 12 in a transverse direction. The spiral body discharges the object a little at a time to a measuring unit 4 while forming the object into a lump. A gap is formed between the first cylindrical body 10 and the measuring unit 4 into which the object supplied little by little falls.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combination weighing method for automatically weighing a highly sticky object to be weighed such as Tsukudani kelp and the like, and a device therefor.

[0002]

2. Description of the Related Art A combination weighing device used for automatic weighing of various products supplies the objects to be weighed to a plurality of weighing hoppers (weighing machines) to detect the weights of these objects and to measure the weight of the objects. A combination calculation is performed based on the values to find an optimum combination in which the combined addition value becomes a predetermined target weight, and only the objects to be weighed in the weighing hopper corresponding to this combination are discharged and collected, whereby the objects to be weighed are collected. The target weight or a weight close to the target weight is measured.

[0003]

By the way, in the above-mentioned combination weighing device, in order to easily obtain the above-mentioned optimum combination, the number of weighing hoppers is increased, and each weighing hopper is provided. It is necessary to supply the objects to be weighed in small amounts little by little. Therefore, when it is necessary to measure the objects to be weighed that are highly sticky and easily entangled, such as Tsukudani kelp, it is necessary to use a special A loosening device will be provided. For example, Jitsukai Sho 63-1195
Japanese Unexamined Patent Publication No. 22 discloses a scraping mechanism including a fork for scraping an object to be weighed in a flow path of the object to be weighed.

However, the loosening device as described above may be unusable if the property or viscosity of the object to be weighed is different, and if the object to be weighed is forcibly scraped and loosened, the object to be weighed will be damaged. However, there is a problem that the product value is impaired, and the objects to be weighed cannot always be loosened in a fixed amount and dispensed, which makes it difficult to obtain the optimum combination in the automatic weighing described above.

Therefore, according to the present invention, the object to be weighed can be surely dispensed without using a special unraveling device, the object to be weighed can be unraveled thereafter, and the optimum combination in automatic weighing is easily obtained. An object is to provide a combined weighing method and an apparatus therefor.

[0006]

That is, the invention according to claim 1 of the present invention (hereinafter referred to as the first invention) supplies an object to be weighed to a plurality of weighing machines and then supplies the objects to the weighing machines. This is a combination weighing method that selects the combination of weighing machines that gives the optimum total weight of the weighing objects, and collects the weighing objects in these weighing machines. The above-mentioned object to be weighed is formed into a lump and dispensed, and the lumped object to be weighed out is discharged and aggregated until it is collected.

The invention according to claim 2 (hereinafter, referred to as the second
The invention) has a plurality of weighing machines for weighing the respective objects to be weighed, and a means for collecting the objects to be weighed in the weighing machines by selecting a combination of these weighing machines. In the combination weighing device, there is provided an object supply means for forming the object to be weighed into a block from the object storage part to each weighing machine, and providing the object supply means and the object to be measured. It is characterized in that a drop for loosening the objects to be weighed out in a lump form is provided between the collecting means and the collecting means.

[0008]

According to the first aspect of the present invention, since the object to be weighed is formed into a lump and dispensed to the weighing machine, the loosening of the object to be weighed is eliminated in this portion.

Further, according to the configuration of the second invention, the above operation can be obtained.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 6 show a first embodiment of combination weighing according to the present invention. The overall schematic configuration of the combination weighing device 1 will be described. The weighing device 1 is composed of a plurality of conveyors arranged in parallel. 2 and the same number of supply devices 3 for the objects to be weighed arranged under the respective discharge ends of the transport supply devices 2 ...
3 and the same number of weighing units 4 ... 4 arranged under the respective discharge ends of these object supply devices 3 ...

2 is composed of belt-type supply conveyors 5 ... 5 and a drive motor 6, and between the supply conveyors 5 and 5, the object to be fed into the gap is provided. Gable type inclined troughs 7 ... 7 that distribute the objects to be fed to the supply conveyors 5 and 5 on both sides are arranged, and an inclined trough for bringing the objects to be weighed onto the conveyors is provided outside the outermost supply conveyor 5. 8 are arranged. As a result, even if a large amount of the object to be weighed is loaded, the supply conveyors 5 ... 5 and the inclined troughs 7 ... 7, 8 can receive the object to be weighed.

The supply conveyors 5 ... 5 are detachable from the main body frame in order to facilitate removal during cleaning.

A stock trough 9 for storing the objects to be weighed is installed on the upstream end side of the supply conveyors 5 ...

The object-to-be-measured supply device (hereinafter, simply referred to as a supply device) 3 forms a mass of the object to be weighed, which is randomly discharged from the carrier supply device 2, and pushes the object to be measured in a small dispensing state to measure downwardly. A unit for quantitatively supplying an object to be weighed to the unit 4, and a first cylindrical body 10 extending in the horizontal direction, and the object to be weighed in the cylindrical body is rotated forward about the axis while being rotated around the axis. A first spiral moving means including a first spiral body 11 to be pushed out, and the first cylindrical body 10 described above.
A second cylindrical body 12 communicating with the vertical direction and a second spiral body 13 that rotates around the axis in the cylindrical body and pushes the object to be weighed in the cylindrical body into the first cylindrical body 10. It is composed of a second spiral moving means.

The weighing unit 4 includes a distribution plate 15 fixed to the swing shaft 14 below the discharge port of the first cylindrical body 10 and a pair of weighing units arranged below the distribution plate 15 in mirror symmetry. Hoppers 16, 16 and each weighing hopper 16, 1
6 and load cells 17, 17 connected to each other.

As shown in FIG. 1, the weighing hoppers 16 and 16 are arranged in pairs on one side of a pedestal 18, and a locking member 19 fixed to each weighing hopper 16 is provided.
Are fixed to one end of the load cell 17 built in the gantry 18 and are respectively locked to brackets 20 that hang downward. As a result, the load acting on the weighing hopper 16 is applied to the load cell 17 via the locking member 19 and the bracket 20. Between the pair of weighing hoppers 16 and 16, there is a roller 2 for opening and closing the individual gates 16a and 16b which are mirror-symmetrically installed.
1 is arranged, and this roller 21 is attached to the opening / closing lever 23 attached to the tip end side of the drive shaft of the drive motor 22 installed in the pedestal 18, so that the opening / closing lever 23 swings. , The gate 16a,
16b is selectively opened and closed.

16 below the weighing hoppers 16 ... 16 are provided with a collecting chute 24 for collecting the objects to be weighed discharged from the respective weighing hoppers 16 ...

The distribution plate 15 has a pair of gears 2 with respect to the drive shaft of a drive motor 25 installed inside the pedestal 18.
6, 26 are connected to each other, and are configured to swing around the axis by the forward and reverse rotation of the motor 25. As a result, the objects to be weighed on the distribution plate 15 are selectively supplied to the pair of weighing hoppers 16, 16 arranged below.

Further, a power case 27 for accommodating the drive parts of the supply devices 3 ... 3 is installed on the upper surface of the gantry 18, and the respective supply devices 3 are supported from the lower front surface of the power case 27. The supporting base 28 is provided so as to project in the horizontal direction, and the tip end side of the supporting base 28 is reinforced by a reinforcing plate 29 arranged in an inclined shape. As shown in FIGS. 3 to 5, a stopper 31 protruding upward is fixedly provided on a rear portion of a horizontal plate 30 extending in the horizontal direction on the support base 28, and the stopper 31 is upwardly extended from an intermediate portion to a rear end portion thereof. Left and right side wall portions 32a and 32b that are raised are provided. Then, the rectangular parallelepiped first cylindrical body 10 is placed on the horizontal plate 30 such that the rear portion of the first cylindrical body 10 contacts the stopper 31. With respect to the horizontal engaging grooves 33a, 33b formed on the rear end side of the first cylindrical body 10, both side wall portions 32a, 32 of the support base 28 are provided.
locking members 34 and 3 each having an L-shaped cross section and fixed to b
4, the horizontal pieces 34a, 34a are inserted, and the clamp mechanism 3 is fixed to the front end side of the one side wall portion 32a.
As shown in FIG. 6, the locking protrusion 36 provided on the
It is locked in a vertical clamping groove 37 formed on the front side of the first cylindrical body 10. As a result, the first cylindrical body 10 is integrally fixed to the support base 28.

Further, in the longitudinal direction of the first cylindrical body 10, a cylindrical hollow portion 38 extending in the horizontal direction is formed, and the shaft portion 11a at one end is provided in the hollow portion 38. The first spiral body 11 protruding through the cover plate 39 fixed to the end portion of 10 is inserted so that the spiral portion 11b formed on the other end side is close to the inner wall surface.

On the other hand, a hollow base 41 is fixedly installed at the lower end of a hollow cone 40 having a tapered opening at the upper end to support the second cylindrical body 12, and the base 41 is The lower end is inserted into a communication port 42 that communicates with the hollow portion 38 formed in the intermediate portion of the first cylindrical body 10. Then, with the connection flange 43 fixedly provided on the outer peripheral portion of the base 41 being mounted on the upper surface of the first cylindrical body 10, the locking pin 44 protruding from the cylindrical body 10,
44 is detachably locked. That is, as shown in FIG. 4, the connecting flange 43 has two locking holes 45, in which a large diameter portion and a small diameter portion are continuous along the circumferential direction.
45 is formed at a position corresponding to the two locking pins 44, 44 projectingly provided on the upper surface of the first cylindrical body 10, and
The small diameter portions of the respective locking holes 45, 45 are locking pins 44,
The second cylindrical body 12 is integrally joined to the first cylindrical body 10 by engaging with the shaft portions of 44, respectively.

Further, as shown in FIG. 3, the second spiral body 13 in which the conical spiral portion 47 is joined to the lower end of the hollow flange portion 46 is inserted into the ring-shaped driven pulley 48 to form the flange. While being pin-joined at the portion 46, the spiral portion 47 is inserted close to the inner wall surface of the second cylindrical body 12. A pin that fits into the locking hole formed in the flange portion 46 is planted on the upper surface of the driven pulley 48, and a conductive belt 49 having a circular cross section is locked to the body portion thereof. The pulley groove 48a and the peripheral groove 4 below which the supporting rollers 50 ...
8b is formed. As shown in FIG. 3, the side portions of the three support rollers 50 ... 50 are inserted into the circumferential groove 48b, and the support rollers 50 ...
It is rotatably fixed to a support member 51 fixed to the upper portion of 7. Then, by driving the drive motor 52 built in the power case 27, the transmission belt 49 is wound between the drive pulley 53 fixed to the drive shaft of the motor 52 and the driven pulley 48. The second spiral body 13 that rotates integrally with the driven pulley 48.
Rotate about the axis with respect to the second cylindrical body 12.

On the other hand, the shaft portion 11a of the first spiral body 11 projecting from the tail portion of the first cylindrical body 10 is the power case 2 described above.
7 is attached to the output shaft 54a of the transmission clutch 54 built in 7 detachably, and the transmission clutch 5
4 is interlockingly connected to a drive motor 56 via a connecting shaft 55. Therefore, by connecting the transmission clutch 54, the rotational force generated by the drive motor 56 is transmitted to the first spiral body 11 via the clutch 54, whereby the spiral body 11 is transferred to the first cylindrical body 10. It is designed to rotate around the axis.

Further, above the power case 27, a supply conveyor 5 whose tip side extends to a position above the second cylindrical body 12 is installed, and this supply conveyor 5 is installed above the power case 27. It is driven by the driven drive motor 6 to move the object to be weighed on the conveyor 5 to the second
It is designed to be dropped above the spiral body 13.

Further, in this embodiment, the first
A mesh-like shutter 58, which is located between the tip of the cylindrical body 10 and the distribution plate 15 disposed below, is fixed to a swing shaft 57 that is swing-driven by an actuator (not shown).
Are arranged in a horizontal state, and the shutter 58
Also, the upper end side of the casing 59 arranged so as to surround the distribution plate 15 is installed so as to cover the front of the first cylindrical body 10.

Next, the operation of each of the supply devices 3 ... 3 will be described. First, each weighing hopper 16 ... 16 and distribution plate 15 ... 1
It is assumed that the objects to be weighed are put in the respective items 5. In this state, the weighing hoppers 16 ... 1 selected for the combination
When the gate of 6 is opened and the object to be weighed is discharged, the upper distribution plates 15 ... 15 are tilted and empty weighing hoppers 16 ... 16
To be weighed. In association with this, the corresponding first spiral body 11 of the supply device 3 is rotated by a predetermined amount in a predetermined direction, whereby the object to be weighed in the first cylindrical body 10 is moved forward by a predetermined amount while being compressed in a lump. As a result, a mass of the object to be weighed is pushed out from the tip of the first cylindrical body 10 in a dispensed state, and a substantially predetermined amount of the object to be weighed falls on the distribution plate 15 below. At this time, the shutter 58 is rotated downward from the horizontal state so that the lump can be freely dropped. Note that this shutter 58
Is returned to the horizontal state after the first spiral body 11 is stopped, so as to catch the residue of the object to be weighed that falls later.

Then, in synchronization with the operation of the first spiral body 11, the second spiral body 13 is rotated by a predetermined amount, so that the second spiral body 13 is rotated.
The object to be weighed in the cylindrical body 12 is moved downward, and the object to be weighed is discharged into the first cylindrical body 10 from the lower end thereof.

A sensor for detecting an object to be weighed is provided at an appropriate position of the second cylindrical body 12, and when the object to be weighed in the cylindrical body 12 has decreased below a predetermined amount, the drive is performed. When the motor 6 operates by receiving the output of the sensor, it drives the supply conveyor 5 to move forward,
The upper object to be weighed is dropped into the second cylindrical body 12. Then, an operator additionally replenishes the object to be weighed on the starting end side of the supply conveyor 5.

As described above, since the object to be weighed is dispensed into the weighing hopper 16 while being formed into a lump, it is easy to dispense a predetermined amount from the object to be weighed supply device 3 and the property of the object to be weighed. Even if the viscosity changes, it can be used without any inconvenience.

Further, the above-mentioned lump-shaped object to be weighed falls from the first cylindrical body 10 onto the distribution plate 15 by dropping, and then falls into the weighing hopper 16, so that these lumps are solidified into lumps. The objects to be weighed are unraveled, and in that state, they are sent to the collecting chute 24. Therefore, the object to be weighed can be loosened without requiring a special loosening device.

By the way, when sticky substances such as Tsukudani kelp are weighed, they need to be cleaned early because they tend to adhere to the flow-through route. Will be disassembled.

First, as shown in FIG. 3, by pulling up the second spiral body 13 from the driven pulley 48, the second cylindrical body 12 is pulled out from the driven pulley 48. Then the empty second
By rotating the cylindrical body 12 in the counterclockwise direction a as shown in FIG. 4, the large diameter portions of the locking holes 45, 45 formed in the lower connection flange 43 of the cylindrical body 12 are moved to the first cylinder. The second cylindrical body 12 is moved upward and removed while being aligned with the heads of the locking pins 44, 44 of the body 10.

Then, the operation lever 60 of the clamp mechanism 35 fixed to the support base 28 is rotated in the b direction. Then, the member 61 (61) of the mechanism 35 rotates in the direction c with the one support shaft 62 as a fulcrum, and the swing arm 63 pivotally connected to the end portion of the operation lever 60 is interlocked with it. By rotating the other support shaft 64 in the c direction as a fulcrum, the locking projection 36 fixed to the other end of the arm 63 is disengaged from the clamp groove 37 of the first cylindrical body 10, whereby the first cylinder The clamped state of the body 10 will be released. Therefore, the first cylindrical body 10 is
By pulling out in the direction, the first spiral body 11 inside is exposed.

Since the supply device 3 is easily disassembled in this way, excellent cleaning performance can be obtained.

FIGS. 7 and 8 show a second embodiment of the present invention, in which a plurality of object-to-be-measured supply devices 103 ... 103 are continuously provided around one supply hopper in communication therewith. The objects to be weighed are supplied to the respective weighing units arranged in a circle through the weighing object supply devices 103 ... 103.

In this case, each object-to-be-measured supply device 103 has a first cylindrical body 10 and a second cylindrical body 12 shown in FIGS.
And a conical cylindrical body 66 protruding obliquely outward from the supply hopper 65 is provided, and the spiral body 68 in the cylindrical body 66 makes the spiral portion 67 close to the inner wall surface. And the spiral portion 67 is joined to the upper end of the hollow flange portion 69, and a pulley groove 70a and a peripheral groove 70b are formed in the driven pulley 70 integrated with the flange portion 69. To be done. And
The transmission belt 71 is engaged with the pulley groove 70a, and the support roller 72 is engaged with the peripheral groove 70b, whereby the spiral body 68 and the flange portion 69 are rotated. A chute 73 made of an elastic material such as rubber is attached to the lower end of the flange portion 69, and the exit of the chute faces directly above the shutter 58 in FIG.

Also in the structure of this embodiment, the supply hopper 6
The object to be weighed fed into each cylindrical body 66 from 5 is sent while being formed into a lump by the rotation of the spiral body 68, is dispensed from the outlet of the chute 73 and is supplied to the weighing unit. Therefore, the same effect as the first embodiment can be obtained.

In the second embodiment, the rubber chute 73 can be equipped with the diaphragm mechanism 74 shown in FIGS. The diaphragm mechanism 74 includes two semi-circular chuck levers 74a, 74a.
Is connected to a link by a connecting pin 75, and the throttle mechanism 74 is supported by a fixed frame or the like (not shown) and fitted into the chute 73.
By the operation of 6, the chuck levers 74a, 74a can be reduced in diameter and the chute 73 can be narrowed. Therefore, immediately after the object to be weighed is dispensed from the chute 73, it can be used by the above-mentioned diaphragm so as to prevent the dropping of the object to be weighed, which is useful depending on the type of the object to be weighed.

FIG. 11 shows the third embodiment of the present invention.
In place of the first cylindrical body 10 and the first spiral body 11 of the first embodiment shown in FIG.
It is arranged below the cylindrical body 12 and the second spiral body 13. In this push-out unit 77, a belt 77c is wound around a pair of pulleys 77a and 77b, and a scraper 78 is provided at a predetermined interval on the belt 77c.
… The 78 is attached. Therefore, the second spiral 13
Object A sent out from the second cylindrical body by the rotation of
Is supplied between the scrapers 78, 78, and is lumped at this portion to be transferred and then dispensed.

In this structure, the object A to be weighed is the scraper 78.
Since it is partitioned and dispensed by the next dispenser, separation from the next dispensed portion is ensured, so that the object A to be measured is powder,
Suitable for weighing side dishes such as salads.

The structure of the embodiment shown in FIG.
It uses a cylinder type extrusion unit 79,
An object to be weighed is made to flow down into a cylinder 79a connected to the second cylindrical body 12, and this is dispensed by pushing the piston 79b which is interlocked with the operation of the actuator 80. Even in this case, it is suitable for measuring powders and prepared foods as in the scraper method.

Further, the structure of the embodiment shown in FIG. 13 is also a cylinder type pushing unit 81, in which a chamber 82 is formed in a piston 81b and a cylinder 81a is formed.
The object to be weighed supplied to the chamber 82 is accumulated in the chamber 82 in a lump form, and the chamber 82 is protruded from the cylinder 81a by the operation of the actuator 83 to be dispensed.

By the way, FIG. 3, FIG. 11, FIG. 12 and FIG.
In the case of such an example structure, the second cylindrical body 12 and the second cylindrical body 12
By vibrating the spiral body 13, the first cylindrical body 10,
It is possible to reliably feed the objects to be weighed into the supply units 77, 79, 81 while forming the objects to be weighed into a lump. As a vibrating structure in that case, for example, as shown in FIG. 14, the second cylindrical body 12 is supported by a fixed frame 85 in a suspended state via a spring member 84, and the second cylindrical body 12 is supported by an appropriate vibrating means.
When the cylindrical body 12 is vibrated vertically, or in a state where the second cylindrical body 12 is supported by the support frame 86 as shown in FIG. 15, the second cylindrical body 12 is moved to the eccentric shaft 88 by an appropriate driving means 87. It is conceivable to rotate it as a center to vibrate it laterally.

[0045]

As described above, according to the present invention, the object to be weighed is formed into a lump and dispensed to the weighing machine.
Since the loosening of the objects to be weighed at this portion is eliminated, the dispensing can be easily performed, and the dispensed objects to be weighed can be naturally loosened by dropping them into a weighing machine. Therefore, it is possible to perform weighing without being affected by the property and viscosity of the object to be weighed, and it is possible to enhance the commercial value without damaging the object to be weighed. In addition, since it is formed into a lump and dispensed as described above, it is possible to accurately supply a certain amount of the object to be weighed to the weighing machine by control such as adjusting the amount of the lump, and an optimum combination in automatic weighing can be obtained. It will be easier.

[Brief description of drawings]

FIG. 1 is an overall schematic side view of a combination weighing device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

3 is a cross-sectional view of a main part of the supply device in FIG.

FIG. 4 is a sectional view taken along the line BB of FIG.

5 is a cross-sectional view taken along the line CC of FIG.

FIG. 6 is an enlarged side view showing the configuration around the first cylindrical body.

FIG. 7 is a perspective view of a combination weighing device according to a second embodiment.

8 is an enlarged cross-sectional view of a main part of FIG.

9 is a cross-sectional view showing a modified structure of FIG.

FIG. 10 is a front view of FIG.

FIG. 11 is a schematic configuration diagram of a third embodiment.

FIG. 12 is a schematic configuration diagram of a fourth embodiment.

FIG. 13 is a schematic configuration diagram of a modified example of FIG.

FIG. 14 is a schematic configuration diagram of a vibrating structure of a first cylindrical body.

FIG. 15 is a schematic configuration diagram of another vibration structure.

[Explanation of symbols]

 3,103 Supply device 10,12,66 Cylindrical body 11,13,68 Spiral body 77,79,81 Extrusion unit 16 Weighing hopper 24 Collecting chute

Claims (2)

[Claims] 1. A weighing machine which supplies the objects to be weighed to a plurality of weighing machines and which has a total weight of the objects to be weighed supplied to the weighing machines is an optimum weight. A combination weighing method for gathering objects to be weighed, which dispenses the objects to be weighed from the object storage section to each weighing machine while forming the objects to be weighed into a lump and discharging the lumped objects to be weighed out. A combinatorial weighing method characterized by loosening the pieces until they are collected. 2. A plurality of weighing machines are provided for weighing the respective objects to be weighed, and a collecting means is provided for collecting the objects to be weighed in the weighing machines by selecting a combination of the weighing machines. In the combination weighing device, there is provided an object supply means for forming the object to be weighed into a block from the object storage part to each weighing machine, and providing the object supply means and the object to be measured. A combination weighing device, characterized in that a drop is provided between the gathering means and the gathering means for loosening the lumped object to be weighed.