JP2533200Y2 - 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 For example, from among articles weighed by a plurality of weighing sections, 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. Combination weighing devices have been put to practical use. In this type of weighing device, in order to increase the combination accuracy, an article is supplied to each of the plurality of weighing units by an approximately integral number of the target weight using a distributed supply device.

FIG. 6 is a plan view of a conventional dispersion feeding device used in a combination weighing device, and FIG. 7 is a sectional view taken along line AA of FIG.

[0004] As shown in these figures, the dispersion supply device 10 is provided on the upper surface 1a of the housing 1 of the combination weighing device.

[0005] The dispersion supply device 10 includes a dispersion feeder 11 for dispersing and discharging articles dropped and supplied from above to the outside,
It comprises a plurality of linear feeders 15, 15, ..., 15 radially arranged around the dispersion feeder 11.

[0006] The dispersion feeder 11 has a conical receiving plate 12.
Is vibrated up and down by the vibrator 13 to convey the article W supplied to the top 12a of the receiving plate 12 to the peripheral edge 12b side of the receiving plate 12 while radially dispersing the article W.

Each of the linear feeders 15 vibrates the conveying surface 17a of the conveying table 17 in the direction of arrow B by the vibrators 16 and guides the articles received from the dispersion feeder 11 to the outside while guiding the articles by the guide portions 17b on both sides. Transport straight and horizontally.

The articles discharged from the straight feeder 15 are:
As shown in FIG. 7, it is supplied to weighing units 2, 2,...

The amount of articles supplied to the weighing section 2 each time is determined by the vibration time and the vibration intensity of the linear feeder 15, and therefore, this type of weighing apparatus uses the weighing result based on the weighing result.
Feedback control of the vibration time and vibration intensity of the straight feeder 15 is performed so that the supply amount each time approaches a predetermined amount.

[0010]

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 15 of the dispersion feeding device 10 must be greatly increased. No.

However, if the vibration time is greatly increased, the supply time of each article is prolonged, 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 distributed supply apparatus to significantly change the article supply amount without affecting the weighing apparatus side.

An object of the present invention is to provide a distributed supply device which solves this problem.

[0014]

In order to achieve the above-mentioned object, a dispersion feeding apparatus according to the present invention vibrates an upwardly inclined surface so that articles supplied on an upper portion of the inclined surface are separated from the inclined surface. And a plurality of rectilinear feeders that receive the articles carried out from the lower edge of the inclined surface of the dispersion feeder on their respective transport surfaces and horizontally transport the articles in a predetermined direction. In the dispersion feeder, the dispersion feeder is provided with a tilt angle varying device that varies an inclination angle of the inclined surface with the upper portion of the inclined surface as a fulcrum according to a control signal.

[0015]

With this configuration, in the dispersion supply device of the present invention, when the inclination angle of the inclined surface of the dispersion feeder is changed by the inclination angle variable device, the lower edge portion of the inclined surface and the straight feeder are conveyed. The level difference from the surface changes, the layer thickness of the articles carried out from the dispersion feeder to the straight-ahead feeder changes, and the amount of articles discharged from the straight-ahead feeder changes.

[0016]

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

FIG. 2 is a plan view of the dispersing and feeding device 20 of the embodiment provided on the casing 1 of the combination weighing device in the same manner as described above, FIG. 1 is a cross-sectional view taken along the line CC of FIG. Is a perspective view of a main part.

In these figures, the dispersion feeder 21 causes the vibrator 22 to vibrate the vibrating shaft 23 up and down with a constant amplitude. The dispersion feeder 21 is integrally formed with a tilt angle changing device for changing the tilt angle of the transport surface.

That is, at the upper end of the vibration shaft 23, a collar body 24 is provided.
Has been fixed. On the lower surface side of the collar body 24, the collar body 2
One ends 25a of a plurality of inclined bars 25 extending radially obliquely downward from 4 are rotatably mounted.

One end 26a of a support bar 26 is rotatably mounted in the middle of each inclined bar 25. A slide tube 27 is slidably mounted on the vibration shaft 23, and the other end 26 b of each support bar 26 is rotatably mounted on the outer periphery of the slide tube 27.

A horizontal plate 28 extending laterally extends below the sliding tube 27, and a stepping motor (hereinafter referred to as a motor) 30 is attached to the horizontal plate 28.

The rotating shaft 30a of the motor 30 is connected to one end 31a of a screw shaft 31 having a thread of a predetermined pitch.

Below the sliding tube 27, a regulating plate 32 parallel to the horizontal plate 28 and fixed to the vibration shaft 23 is arranged.

The restricting plate 32 is provided with a screw hole 33 screwed to the screw shaft 31.

Therefore, the sliding tube 27 is connected to the motor 3
When 0 is driven to rotate by a predetermined pulse, it moves upward or downward by a predetermined distance with respect to the vibration axis 23, so that the tilt angle of each tilt bar 25 also changes.

On the upper surface side of each inclined bar 25, an inclined surface of the dispersion feeder 21 is formed, and a flexible cloth material 35 is adhered.

Below the peripheral portion 35a of the cloth material 35,
The linear feeders 15, 15,...

Each of the straight feeders 15 is arranged side by side so that the border between the adjacent straight feeders is located on the extension of each inclined bar 25.

The sensor mounting rods 41 and 42 are erected from the gap between the transport tables 17 of the adjacent linear feeders 15, and the upper end of one of the sensor mounting rods 41 has a flange body of the dispersion feeder 21. A projector 43 for projecting a light beam passing through a position slightly higher than 24 is attached.

On the upper end of the other sensor mounting rod 42, a light receiver 44 for receiving the light beam from the light projector 43 is provided.
Is installed.

The light projector 43 and the light receiver 44 are sensors for detecting the supply state of the articles to the distributed supply device 20. When the light receiver 44 enters the light reception state, a new article is supplied from the supply conveyor 50.

Next, the operation of the dispersion supply device 20 will be described.

FIG. 4 shows a state of transporting articles when the sliding tube 27 is at the lowest position.

When the slide tube 27 is at the lowermost position, the tip 25b of each of the inclined bars 25 of the dispersion feeder 21 is lowered, and the peripheral portion 35a of the cloth material 35 stretched therebetween and the transfer table 17 of the linear feeder 15 are moved. The step with the transport surface 17a is almost continuous, only slightly larger than the sum of the vibration amplitudes of the two.

For this reason, the articles are discharged from the linear feeder 15 to the measuring section 2 with a layer thickness substantially equal to the layer thickness of the articles on the peripheral portion 35a of the cloth material 35.

It should be noted that the article supply in this state continues,
When the number of articles on the collar body 24 decreases, the light receiver 44 enters a light receiving state, and a new article is supplied from the supply conveyor 50. Therefore, a large change in the layer thickness of the article on the cloth material 35 does not occur.

Here, in order to greatly increase the amount of articles supplied to the measuring section 2 each time, the motor 30
When a predetermined number of control pulse signals are input with a predetermined polarity,
By the rotation of the screw shaft 31, as shown in FIG.
The sliding pipe 27 rises to a predetermined height, and the other end 25b side of each inclined bar 25 of the dispersion feeder 21 rises.

For this reason, the step between the peripheral portion 35a of the cloth material 35 and the transfer surface 17a of the transfer table 17 of the linear feeder 15 becomes large, and the layer thickness of the article on the linear feeder 15 increases by a predetermined distance. The thickness increases continuously from the upper end of the article layer at the peripheral portion 35b of the 35.

Therefore, the amount of articles supplied from the straight-ahead feeder 15 to the measuring section 2 is significantly increased from the state shown in FIG. 4 even if the vibration time of the straight-ahead feeder 15 is the same.

In the above description, the amount of articles supplied to the weighing unit 2 is greatly increased. Elevation may be performed automatically.

Further, in this embodiment, the present invention is applied to the dispersion feeder for dispersing the articles on the substantially conical inclined surface. However, the articles are dispersed and discharged from the flat inclined surface to a plurality of linear feeders. The same can be applied to a distributed feeder.

In the above embodiment, the dispersion feeder 21
Although the inclined surface is formed by the cloth material 35, the inclined surface may be formed by an elastic material such as rubber, and various modifications are possible for a mechanism for changing the inclination angle.

[0043]

As described above, the dispersion feeding apparatus according to the present invention sends the control signal to the variable inclination angle device of the dispersion feeder, and sets the inclination angle of the inclined surface of the dispersion feeder to the upper part of the inclined surface as a fulcrum. Since it is variable and the layer thickness of the article on the straight-ahead feeder can be greatly increased or decreased, the supply amount of the article can be greatly varied without changing the vibration time or the vibration intensity of the straight-ahead feeder.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view taken along line CC of FIG. 2;

FIG. 2 is a plan view of one embodiment.

FIG. 3 is a perspective view of a main part of one embodiment.

FIG. 4 is an enlarged sectional view for explaining the operation of one embodiment.

FIG. 5 is an enlarged cross-sectional view for explaining the operation of one embodiment.

FIG. 6 is a plan view of a conventional device.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

[Explanation of symbols]

 REFERENCE SIGNS LIST 15 straight feeder 17 transfer table 17 a transfer surface 20 dispersion supply device 21 dispersion feeder 22 vibrator 23 vibrating shaft 24 flange body 25 inclined rod 26 support rod 27 sliding pipe 28 horizontal plate 30 stepping motor 31 screw shaft 32 regulating plate 35 cloth material

Claims (1)

(57) [Scope of request for utility model registration] 1. A dispersion feeder for vibrating an upwardly inclined surface to convey articles supplied on an upper portion of the inclined surface toward a lower edge portion of the inclined surface, and the inclined surface of the dispersion feeder. A plurality of rectilinear feeders that receive the articles carried out from the lower edge portion on their respective conveying surfaces and horizontally convey in a predetermined direction;
A dispersion feeding device, characterized in that an inclination angle varying device is provided which varies an inclination angle of the inclined surface according to a control signal with the upper portion of the inclined surface as a fulcrum.