JP2537773Y2 - Distributed feeder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributed supply apparatus for dispersing articles on a plurality of transport paths.

[0002]

2. Description of the Related Art From among articles weighed by a plurality of weighing units, a combination in which the combined weight of the weighed values is close to a target weight is selected, and the articles selected in this combination are collectively discharged. A weighing device has been practically used.

In this type of weighing device, for example, a mixed type weighing device for discharging a mixture containing two types of articles, each of which is a predetermined amount, such as candy and chocolate, in a lump is provided by a dispersing supply device. Of the plurality of weighing sections, for example, one type of article is supplied to half of the weighing sections, and another type of article is supplied to the remaining half of the weighing sections.

FIG. 12 is a plan view of a conventional dispersion feeding device used in a combination weighing device for a two-product mix, and FIG. 13 is a sectional view taken along line AA of FIG.

[0005] As shown in these figures, the dispersion supply device 10 is formed symmetrically with a partition plate 11 provided upright on the upper surface 1a of the casing 1 of the combination weighing device.

[0006] Dispersion feeders 12 and 22 are arranged on the center both sides 11a and 11b of the partition plate 11.

[0007] The dispersion feeders 12 and 22 each have an inverted conical shape.
The equally-shaped receiving plates 13 and 23 are vibrated by the vibrators 14 and 24, and the articles supplied from above are received from the tops 13a and 23a of the receiving plates 13 and 23 to the peripheral edge 13b,
Disperse to 23b.

Around the dispersion feeders 12, 22, there are linear feeders 15, 25, which are provided on the periphery 13 of the receiving plates 13, 23.
N are arranged radially along each of b and 23b.

[0009] Each of the linear feeders 15 and 25 is transported by the vibrators 16 and 26 to the transport surface 1 of the transport tables 17 and 27.
7a and 27a are vibrated in the direction of arrow B to
The articles received from 2, 22 are guided from both sides by guide portions 17b,
While being guided by 27b, it is transported horizontally outward.

The articles discharged from the linear feeders 15 and 25 are temporarily stored in intermediate hoppers 2, 2,... 2 provided on the side surface 1b of the casing 1 as shown in FIG. , 3,...

On both sides 11a and 11b of the partition plate 11, flange plates 18 and 19 for preventing articles from dropping into gaps between the partition plate 11 and the receiving plates 13 and 23 are provided with receiving plates 13 and 19, respectively.
23 are installed along the inclination.

Therefore, the article W _A is supplied to one of the dispersion feeders 12 and the article W _A is supplied to the other dispersion feeder 22.
Supplying _B, the N number of the weighing hoppers corresponding to the linear feeder 15 is supplied with the articles W _A, it is in the N weighing hoppers corresponding to the linear feeder 25 is supplied with the article W _B.

Articles W supplied to N weighing hoppers
_A, W _B are each weighed, from among the articles W _A,
Is selected combinations close to the target weight Wa, the combination close to the target weight Wb from among the article W _B is selected.

The articles W _A and W _B selected for the combination are discharged from the respective weighing hoppers, collected by a collecting chute (not shown), and discharged to a packaging machine or the like.

In this type of combination weighing device, the closer the quantity of articles supplied to the weighing hopper is to an integer fraction of the target weight,
Since a large number of combinations near the target weight can be obtained, it is necessary to stabilize the supply amount from each of the straight feeders 15 and 25 each time. Therefore, when it is necessary to perform high-precision weighing, particularly in a mixed type in which the number of weighing hoppers for each type is small, the vibration intensity and the vibration time of the linear feeders 15 and 25 are feedback-controlled according to the weighing result.

[0016]

However, in order to combine articles having a large target weight with this type of weighing device, the vibration time and vibration intensity of the linear feeder of the dispersion feeding device 10 must be greatly increased. .

However, if the vibration time is greatly increased, the time for supplying each article becomes longer, and the weighing efficiency of the entire weighing device is greatly reduced. Further, when the vibration intensity is greatly increased, the life of the feeder is significantly shortened, and the influence of the vibration on the weighing section cannot be neglected.

Due to such a limitation, it has been extremely difficult for the conventional dispersion supply apparatus to greatly change the article supply amount without adversely affecting the weighing device side.

Further, in the conventional dispersion feeding apparatus, if articles which are easy to bounce are supplied from above in a state where there is no article on the receiving plate of the dispersion feeder, most of the articles hit the receiving plate and scatter outside the weighing device. There was a problem.

An object of the present invention is to solve this problem and to provide a distributed supply device capable of changing the supply amount of articles without adversely affecting the weighing machine.

[0021]

In order to achieve the above object, the present invention provides a dispersing and feeding apparatus, comprising: a base; and an article mounted on the base, which vibrates a receiving plate. And a plurality of dispersion feeders for transporting the dispersion feeder toward the peripheral portion, and a plurality of the dispersion feeders mounted on the base corresponding to the plurality of dispersion feeders, respectively, and the articles to be carried out from the peripheral edge of the receiving plate of the dispersion feeder. And a plurality of cylindrical bodies respectively arranged above the receiving plates of the plurality of dispersion feeders and for passing the articles supplied from above onto the receiving plate. And a plurality of elevating devices for elevating and lowering the plurality of cylinders according to control signals.

[0022]

With such a configuration, in the dispersion feeding device of the present invention, the articles supplied from above through the respective cylinders and supplied onto the receiving plate of the corresponding dispersion feeder are positioned at the lower edge of the cylinder. While being regulated by the distance between the receiving plate and the receiving plate, the sheet is conveyed to the peripheral portion of the receiving plate and is carried into each straight feeder. When the height of the cylinder is changed by the control of the elevating device, the layer thickness of the article regulated by the distance between the lower edge of the cylinder and the receiving plate changes, and the linear feeder corresponding to the cylinder moves from the linear feeder. The amount of articles ejected changes.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of FIG.
FIG. 3 is an enlarged cross-sectional view taken along a line C, and shows a main part of a dispersion supply device 30 according to an embodiment formed on the basis of a housing 1 of the combination weighing device. 2 is a plan view of one embodiment in which the cylinders 90 and 95 are omitted, FIG. 3 is a schematic side view of FIG. 2 taken along the line D-D, and FIG. It is the side view which looked along.

In these figures, the partition plate 11, the dispersion feeders 12, 22 and the rectilinear feeders 15, 25 are the same as those of the above-described conventional apparatus, and therefore, are denoted by the same reference numerals and will not be described.

Circular holes 4 to 7 are provided at positions on the upper surface of the housing symmetrical with respect to the partition plate 11.

On the circular holes 4 to 7, a cylindrical guide body 3 is provided.
1 to 34 are fixed concentrically.

Bearings 31a to 34a are provided on the inner periphery of the guides 31 to 34, and round rod-shaped elevating shafts 36 to 39 passing through the guides 31 to 34 are provided with bearings 31a to 34a. Slidably supported up and down.

Lower ends 36a-39a of lifting shafts 36-39
Are inserted into the housing 1 through the circular holes 4 to 7, respectively, and the outer periphery of the lower part of the elevating shafts 36 to 39 on the center side of the housing 1 is racked from the lower ends 36a to 39a upward. The grooves 41 to 44 have a predetermined length.

At the lower end on the opposite side of the rack grooves 41 to 44, sensor plates 46 to 4 extending in the outer peripheral direction of the housing 1 are provided.
9 are attached.

Rack grooves 41 to 44 of each of the elevating shafts 36 to 39
Are meshed with pinion gears 51 to 54, respectively. The pinion gears 51 to 54 are connected to pulse motors 56 to 59 fixed in the housing 1, respectively.

In the housing 1, each of the sensor plates 46 to 4 is provided.
Upper limit position sensors 61 to 64 for detecting that 9 has risen to a predetermined upper limit position and lower limit position sensors 66 to 69 for detecting that 9 has dropped to a predetermined lower limit position are attached.

Each sensor detects the sensor plates 46 to 49 optically, magnetically or mechanically. Further, the positions of the lower limit position sensors 66 to 69 are determined by cylindrical bodies 90 and 95 described later.
Lower ends of the receiving plates 13, 23 of the dispersion feeders 12, 22
Sensor plates 46 to 49 when lowered until they substantially contact
Is set in advance so that the position can be detected.

Connecting members 71 to 74 are mounted on the upper portions 36b to 39b of the elevating shafts 36 to 39 at the same height.

The connecting members 71 and 72 have the first support 7
5 arms 77 extending horizontally from both ends of the central semicircular frame 76,
78 is locked.

Further, arms 82, 83 extending horizontally from both ends of a semicircular frame 81 at the center of the second support 80 are engaged with the connecting members 73, 74.

Each arm 7 of the first and second supports 75 and 80
7, 78, 82, and 83 have the same length and are formed in an inverted U-shaped cross section, and one ends 77a and 82a of one of the arms 77 and 82.
Are screwed and fixed to the connecting members 71 and 73, respectively.
One ends 78a and 83a of the other arms 78 and 83 are engaged with the connecting members 72 and 74 from below, respectively.

The semicircular portions 76a, 81a of the semicircular frames 76, 81
Has one end connected to the arm by hinges 84 and 85, and the other end connected to the arm by screw-type stoppers 86 and 87.

For this reason, if the fixing members 86 and 87 are respectively rotated to release the fixing of the other ends of the semicircular portions 76a and 81a and the one end is pivoted, the cylindrical members 90 and 95 described later can be obtained.
Can be removed laterally.

In the semicircular frame 76 of the first support 75, a substantially cylindrical hollow first cylindrical body 90 is inserted. The first cylindrical body 90 is supported concentrically right above the receiving plate 13.

A second cylindrical body 95, which is the same as the first cylindrical body 90, is inserted into the semicircular frame 81 of the second support 80. The second cylindrical body 95 is supported concentrically right above the receiving plate 23.

The first and second cylinders 90 and 95 are both composed of upper cylinders 91 and 96 and a band 9 below the upper cylinders 91 and 96.
Transparent lower cylinders 93, 98 attached by 2, 97
The upper part of each upper cylinder body 91, 96,
Flanges 91a and 96a are provided to easily receive articles supplied from above and to prevent each support from falling down. Also, the lower cylinder 9
At the lower end near the partition plate 3 and 98, flange plates 18 and 19 are provided.
Are provided with cutout portions 93a and 98a cut in a triangular shape along.

The arms 77, 78 of the first support 75
The sensor mounting plate 100 extending to the side of the lower cylindrical body 93,
101 is attached. One sensor mounting plate 100
A light projector 102 for projecting light passing through a predetermined height position in the lower cylindrical body 93 close to the partition plate 11 is attached to a lower end of the light emitting device 1.
A light receiver 103 for receiving light from the light source 02 is attached.

The arms 82, 83 of the second support 80
The sensor mounting plates 105, 1 extending to the side of the lower cylinder 98
06 is mounted, and at the lower end of one sensor mounting plate 105, a light projector 107 that projects light passing through a predetermined height position in the lower cylindrical body 18 close to the partition plate 11 is mounted, and the other is mounted. A light projector 107 is provided at the lower end of the sensor mounting plate 106.
A light receiver 108 for receiving light from the light source is attached.

The periphery of the guide members 31 to 34 and the elevating shafts 36 to 39 projecting upward from the guide members are covered by bellows-shaped waterproof covers 111 to 114.

As shown in FIG. 5, for example, as shown in FIG. 5, the control unit of the dispersion supply device 30 outputs the sensor outputs of the upper limit position sensors 61 and 62, the lower limit position sensors 66 and 67, the light receiver 103,
A first control device 120 for controlling the rotation of the pulse motors 56 and 57 based on an operation start signal, a height setting signal, and a bridge signal from the weighing device;
3, 64, a lower limit position sensor 68, 69, a second control device 121 for controlling the rotation of the pulse motors 58, 59 based on the sensor output of the light receiver 108, the operation start signal, the height setting signal, and the bridge signal. It is constituted by.

The first and second control devices 120 and 121 are:
In each case, each pulse motor is controlled according to the processing procedure shown in the flowchart of FIG.

Hereinafter, the operation of the distributed supply device 30 will be described with reference to this flowchart.

When the operation is started in a state where there are no articles on the dispersion feeders 12 and 22, the first and second control devices 12 and
0 and 121 both drive the pulse motors 56 to 59 in the direction in which the elevating shafts 36 to 39 descend, and stop the lowering when the sensor plates 46 to 49 are detected by the lower limit position sensors 60 to 69 ( Step 1).

By this lowering, the first and second cylinders 9
As shown in FIG. 7, the lower edges 0 and 95
3 and 23, respectively.

From this state, the supply conveyors 130, 13
On receiving plate 13 and 23 from 1, each article W _A, W _B
Is dropped and supplied, the first supplied article bounces against the receiving plates 13 and 23, but returns against the inner walls of the first and second cylindrical bodies 90 and 95 surrounding the tops of the receiving plates 13, 23. Articles are accumulated in each cylinder without scattering to the outside of the machine.

When the articles in the first and second cylinders 90 and 95 are supplied to the heights of the light receivers 103 and 108, respectively,
The first and second control devices 120 and 121 input the number of pulses corresponding to the input height setting signal to the pulse motors 56 to 59, and input the first and second cylinders 90 and 95, respectively.
Is raised to the set height as shown in FIG. 8 (steps 2 and 3).

With this rise, the dispersion feeders 12 and 22
Vibrators 14, 24 and vibrators 16, 26 of linear feeders 15, 25 are simultaneously driven.

By this vibration, the first and second cylinders 90,
The articles stored in 95 are the lower cylinder 93,
In a state where the layer thickness is uniformly regulated by the lower edge of the sheet 98, the sheet is conveyed on each of the linear feeders 15 and 25, supplied to the intermediate hopper 2, and then supplied to the measuring hopper 3. Articles in each weighing hopper are weighed, combined set close to the target weight Wa is performed on the basis of the weighing results of N weighing hoppers the article W _A is supplied, the N weighing hoppers the article W _B supplied Is selected based on the weighing result. The articles selected for each product type are simultaneously discharged from the weighing hopper 3 and are collected as a mixed product.

The empty weighing hopper 3 is supplied with articles from the intermediate hopper 2, and the empty intermediate hopper is supplied with new articles from the corresponding linear feeders 15 and 25.

[0056] During this time, the manual input or metering device itself, for example when the height setting signal for greatly increasing the one of the article W _B is input, the second controller 121
Is a pulse motor 5 according to the changed height setting signal.
8 and 59 are driven to raise the second cylinder 95 as shown in FIG. 9 (steps 4 and 3).

[0057] Therefore, the receiving plate article layer thickness on 23 greatly increases, the supply amount of the article W _B for the weighing hopper 3 is also significantly increased.

[0058] Also, for example, FIG. As shown in 10, the first article W _A is caught between the lower edge and the receiving plate 13 of the cylindrical body 90 (bridge state) is, the metering device itself or the operator When the bridge signal is input, the first control device 120 outputs a predetermined number of pulses to the pulse motors 56 and 57, and causes the first cylindrical body 90 to
After being raised by a predetermined distance as shown in FIG. 11, it is returned to the original height position again (steps 6 and 7). The bridge state is eliminated by this elevation.

During the operation, when the height of the articles on the tops of the receiving plates 13 and 23 falls below the light receivers 103 and 108, new articles are supplied from the supply conveyors 130 and 131, respectively. For this reason, the first and second cylindrical bodies 90,
In the state where the height of 95 does not change, each straight feeder 1
The layer thickness of the articles on 5 and 25 hardly changes, and the amount of the articles supplied to the weighing hopper 3 becomes almost constant by the vibration for a certain time. Further, as the first and second cylinders 90 and 95 are raised, the light emitters and receivers 102, 103, 107,
8, the amount of articles in the first and second cylindrical bodies 90 and 95 is substantially constant, and the state in which the article layer thickness on the dispersion feeders 12 and 22 is regulated by the lower edges is stable. And continue.

In the above-described embodiment, an example of a dispersing and feeding apparatus used for a combination weighing apparatus for combining two kinds of articles into predetermined quantities at a time has been described. The present invention can be applied to the present invention.

In the lifting device of the above embodiment, one cylinder is raised and lowered by linking two lifting shafts.
The cylindrical body may be raised and lowered by one or three or more lifting bodies.

Further, in the lifting device of the above embodiment, the pinion gear meshes with the rack groove provided on the lifting shaft, but the cylindrical body is raised and lowered not only by gear driving but also by belt driving or chain driving. You may.

Further, the height of each cylinder may be changed by manual operation, or may be automatically changed by following the change of the average value of the weighing results of the weighing section. The shape of the cylinder is
The present invention is not limited to the above embodiment, and various modifications can be made to the shape of each part without departing from the scope of the present invention.

[0064]

[Effects of the Invention] As described above, the dispersion feeding device of the present invention comprises a cylinder arranged on the receiving plate of each dispersion feeder,
Since it is configured to be able to move up and down by the lifting device, just change the height of each cylinder by a control signal,
The layer thickness of the article on each receiving plate can be stably and arbitrarily changed without affecting the weighing machine side, and the article can be prevented from scattering outside the machine.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view taken along line CC of a main part of FIG.

FIG. 2 is a plan view in which a part of one embodiment is omitted.

FIG. 3 is a view of FIG. 2 taken along line DD.

FIG. 4 is a view of FIG. 2 taken along line EE.

FIG. 5 is a block diagram illustrating a configuration of a control unit according to one embodiment.

FIG. 6 is a flowchart illustrating an example of a processing procedure of a control unit in FIG. 5;

FIG. 7 is an enlarged sectional view for explaining the operation of one embodiment.

FIG. 8 is an enlarged sectional view for explaining the operation of one embodiment.

FIG. 9 is an enlarged sectional view for explaining the operation of one embodiment.

FIG. 10 is an enlarged cross-sectional view for explaining the operation of one embodiment.

FIG. 11 is an enlarged sectional view for explaining the operation of one embodiment.

FIG. 12 is a plan view of a conventional device.

FIG. 13 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 housing 11 partitioning plate 12, 22 dispersion feeder 13, 23 receiving plate 15, 25 rectilinear feeder 17, 27 carrier 30 dispersion supply device 31-34 guide body 36-39 elevating shaft 56-59 pulse motor 61-64 upper limit position Sensors 66 to 69 Lower limit position sensor 75 First support 80 Second support 90 First cylinder 95 Second cylinder 102, 107 Light emitters 103, 108 Light receiver

Claims (1)

(57) [Scope of request for utility model registration] 1. A base, a plurality of distributed feeders mounted on the base, and vibrating a receiving plate to convey articles on the receiving plate toward a peripheral portion; A plurality of dispersing feeders, each of which is attached to a corresponding one of the dispersing feeders, a linear feeder that receives the articles conveyed from the peripheral portion of the receiving plate of the dispersing feeder on respective conveying surfaces and conveys the articles in a predetermined direction; A plurality of cylinders respectively arranged above the receiving plate of the dispersion feeder, and each of which allows articles supplied from above to pass through the receiving plate, and a plurality of elevating devices which respectively raise and lower the plurality of cylinders by a control signal. Dispersion feeding device provided.