JPH1137832A - Combined measuring apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combined measuring apparatus capable of reducing the size of the whole apparatus, capable of making difficult the mixture of dust into substances to be measured, and capable of reducing noise. SOLUTION: This measuring apparatus is provided with supply troughs 3 which send substances to be measured from a scattering unit 2 toward the downstream side by vibration, and a plurality of hoppers 4 having opening and closing gates 5, and is a combined measuring apparatus which sends the substances to be measured in the order of the scattering unit 2, the supply troughs 3 and the hoppers 4 downwards from above. In this case, the horizontal component of the direction A of feeding of the substances to be measured from the scattering unit 2 to each supply trough 3, and the horizontal component of the direction B of sending of the substances to be measured from the supply trough 3 to a hopper 4 are set to directions approximately opposite to each other at a position lapped each other vertically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combination weighing apparatus having a plurality of supply troughs and weighing hoppers.

[0002]

2. Description of the Related Art A combination weighing apparatus collects a plurality of objects to be weighed to obtain a target weight or a target number (for example, see Japanese Patent Application Laid-Open No. Hei 6-317456). FIG. 8 shows an example of this kind of combination weighing device.

[0003] In FIG. 8, a conveyor 1 drops an object to be weighed to the center of a dispersion feeder 2. A number of supply troughs 3 are provided on the periphery of the dispersion feeder 2.
The dispersion feeder 2 repeatedly vibrates by driving the vibrating device 2a, and each supply trough 3 vibrates repeatedly by driving the vibrating device 3a. Due to these vibrations, the objects to be weighed on the dispersion feeder 2 are moved through the supply trough 3 to a large number of pool hoppers 4.
Sent to Each pool hopper (hopper device) 4
An opening / closing gate 5 is provided, and a weighing hopper 6 is provided below it. Each weighing hopper 6 is provided with a hopper weight weighing device 7 and an opening / closing gate 8.
A large collecting chute 9 is provided below the opening / closing gate 8, and the objects to be weighed are collectively collected by the weighing hopper 6 and combined to form a target weight (or a target number). ). The gates 10 are moved forward and backward by a drive unit (electromagnetic valve) (not shown) to press the end of the link 11 to open and close the gates 5 and 8.

[0004]

However, in the combination weighing device shown in FIG. 8, a gate opening / closing tool 10 is provided further outside the supply trough 3 and the pool hopper 4 disposed outside the dispersion feeder 2. Therefore, the entire combination weighing device becomes large. Further, since the upper part of the pool hopper 4 is not covered, dust easily mixes into the object to be weighed.

Accordingly, it is a main object of the present invention to provide a combination weighing device which can reduce the size of the entire device and in which dust is hardly mixed into an object to be weighed.

On the other hand, in a recent combination weighing apparatus, as shown in FIG. 9, a drive section 17 of the opening / closing gates 5, 8 is provided inside the pool hopper 4 and the weighing hopper 6, so that this type is used. Of the combination weighing device becomes smaller as a whole.
However, also in this conventional technique, the upper part of the pool hopper 4 is not covered, and dust easily mixes into the object to be weighed. Further, in the combination weighing device, since the open / close gates 5 and 8 of the large number of pool hoppers 4 and the weighing hoppers 6 always perform opening / closing operations, they become a source of noise. Since nothing is arranged outside the weighing hopper 4 and the weighing hopper 6, noise cannot be absorbed, and the environment in the factory is deteriorated.

Accordingly, another object of the present invention is to provide a combination weighing device capable of reducing noise.

[Means for Solving the Problems]

In order to achieve the above object, the present invention comprises a supply trough for sending an object to be weighed from a dispersion section by vibrating downstream, and a plurality of hopper devices having an opening / closing gate. In the combination weighing device that sends the dispersion unit, the supply trough and the hopper device in order from top to bottom, a horizontal component in the direction of sending the object to be weighed from the dispersion unit to the supply trough,
A horizontal component in a direction in which the object to be weighed is sent from the supply trough to the hopper device is set in directions substantially opposite to each other at positions vertically overlapping.

According to the present invention, since the direction in which the objects to be weighed are sent from the supply trough to the hopper device is reversed, the upper part of the hopper device is covered by the dispersion portion.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment. In this embodiment, as shown in FIGS. 1 and 2,
A large number of supply troughs 3, pool hoppers 4, and weighing hoppers 6 are arranged substantially on the circumference, with a dispersion feeder (dispersion unit) 2 at the center.

The supply trough 3, the pool hopper 4 and the weighing hopper 6 are arranged in this order from top to bottom, and the supply trough 3 is connected to the pool hopper 4 and the weighing hopper 6.
Are arranged on the outer peripheral side. That is, the openings above the pool hopper 4 and the weighing hopper 6 are covered with the dispersion feeder 2. The supply trough 3 supplies the object to be weighed supplied from the dispersion feeder 2 in the direction of arrow A to the pool hopper 4 as shown by arrow B. That is, the direction A in which the objects to be weighed are sent from the dispersion feeder 2 to the supply trough 3
And the horizontal component in the direction B for sending the object to be weighed from the supply trough 3 to the pool hopper 4, as shown in FIG.
The positions are set in substantially opposite directions at vertically overlapping positions.

As shown in FIG. 3, the supply trough 3 includes a trough base 33 installed on the support 12 via a plurality of coil springs 32.
A pair of leaf springs 34 attached to the
, A trough body 37 supported on the connecting member 35, and a magnetic body 38 mounted on the trough base 33 and attached to the connecting member 35.
And an electromagnetic coil 39 for applying an electromagnetic force to the electromagnetic coil 39. In the supply trough 3, when the electromagnetic coil 39 is intermittently energized, the magnetic body 38 is pulled outward (arrow a) against the elastic force of the leaf spring 34, and the trough body 37 is moved downward. After being displaced outward (arrow a) while sinking, the trough body 37 is displaced inward (arrow b) while floating upward, and the trough body 37 repeatedly vibrates in the a-b direction shown in the drawing. The object to be weighed on the trough body 37 is conveyed to the pool hopper 4 by this vibration.

The support section 12 shown in FIG.
The vibrating device 2a is supported via the reference numeral 8. Further, the support portion 12 is connected to the pool hopper 4 via a bracket 13.
And supported by the gantry 15. On the other hand, the weighing hopper 6 is supported by a gantry 15 via a bracket 14 and a hopper weighing device 7. The support portion 12 has a hollow wall shape and is provided on the outer peripheral side of the pool hopper 4 and the weighing hopper 6. That is, the outer periphery of the opening and closing gate 5 and the opening and closing gate 8 is
It is covered by a soundproof and dustproof wall consisting of: The support portion 12 supports each gate opening / closing tool 10 so as to be able to advance and retreat, and also supports a driving unit 17 that drives each gate opening / closing tool 10 by electromagnetic force. The drive unit 17 is disposed at a position opposite to the dispersion feeder 2, that is, at a position outside the pool hopper 4 and the weighing hopper 6.

The other structure is the same as that of the conventional example shown in FIGS. 8 and 9, and the same or corresponding portions are denoted by the same reference characters and detailed description thereof will not be repeated.

[0015] In the above configuration, the present combination weighing device includes:
After the objects to be weighed are supplied from the dispersion feeder 2 toward the outer supply trough 3, the objects to be weighed are supplied from the supply trough 3 to the inner pool hopper 4. Therefore, the pool hopper 4 and the weighing hopper 6 can be disposed at an inner position where the upper part is covered by the dispersion feeder 2. As a result, the size of the combination weighing device can be reduced.

The pool hopper 4 and the weighing hopper 6
Is covered on the outside by the supply trough 3 and the support portion 12. As described above, since the pool hopper 4 and the weighing hopper 6 are covered on the upper and outer sides, a dustproof effect and a soundproof effect can be expected.

In addition, since the pool hopper 4 and the weighing hopper 6 are disposed inside the supply trough 3, the gate opening / closing tool 10, the drive unit 17 and the support unit 12 are provided outside the pool hopper 4 and the weighing hopper 6. However, the overall combination weighing device does not become much larger.

When the pool hoppers 4 and the measuring hoppers 6 are arranged in a circular or polygonal arrangement (arranged substantially on the circumference) as in this embodiment, the collective discharge is performed depending on the position of the measuring hopper 6. Opening diameter D above chute 9
Is determined. When the opening diameter D of the collecting and discharging chute 9 increases, the falling distance H of the object to be weighed in the collecting and discharging chute 9 increases, so that the time required for the to-be-weighed object to drop in the collecting and discharging chute 9 increases. This may not shorten the weighing cycle time, or may cause cracking or damage to the weighing object.

Here, in the present combination weighing apparatus, since the pool hopper 4 is disposed inside the supply trough 3, the measurement hopper 6 below the pool hopper 4 is also disposed inside the supply trough 3. For this reason, the opening diameter D of the collective discharge chute 9 is also reduced, so that the head is reduced, the cycle time can be shortened, and cracking and damage of the object to be weighed can be reduced. In addition, since the opening diameter D of the collective discharge chute 9 is reduced, the combination weighing device can be downsized in the height direction.

FIG. 4 shows a second embodiment. In this embodiment, the washing device 20 is provided integrally with the combination weighing device of the first embodiment. The cleaning device 20 has a cleaning chamber 21, and the cleaning chamber 21 is formed by a cleaning chamber wall 21 a provided in connection with the support 12. On the inner wall of the cleaning chamber 21, a first cleaning nozzle 22 and a piping material (not shown) are attached. On the other hand, a second washing nozzle 23 is provided inside the pool hopper 4 and the weighing hopper 6, that is, at the center. The first
The second cleaning nozzles 22 and 23 clean these devices by spraying predetermined cleaning water or the like onto the supply trough 3 and the hoppers 4 and 6, respectively.

As described above, in the case where the cleaning chamber 21 is provided, there is an advantage that it is not necessary to separately form a lower portion of the cleaning chamber wall 21a because the support portion 12 forms a part of the cleaning chamber wall 21a. .

In each of the above embodiments, since the hoppers 4, 6 and the gate opening / closing tool 10 are covered by the support portion 12 constituting the soundproof / dustproof wall, maintenance may be difficult. 5 and 6 show an embodiment in which such maintenance is facilitated. In FIG. 5, the support portion 12A includes a pair of semi-cylindrical divided support portions 12a and 12b and a base 12c. One of the divided support portions 12a is fixed to the base 12c, The other divided support portion 12b is rotatably attached to the support portion 12a by a hinge.

As described above, by opening the support portion 12A,
Maintenance of the pool hopper 4 and the weighing hopper 6 can be performed. In addition, for convenience of drawing, only a part of the supply trough 3, the pool hopper 4, and the weighing hopper 6 is illustrated.

As shown in FIG. 6, the support portion 12A has a pair of divided support portions 12a and 12b rotatable with respect to a base 12c.
b may open in opposite directions.

In each of the above embodiments, the case where the hoppers 4, 6 and the like are arranged substantially on the circumference has been described. However, in the present invention, as shown in the plan layout diagram of FIG. The present invention can also be applied to a case where they are arranged in a straight line.

In each of the above embodiments, the dispersion feeder 2 shown in FIG. 1 has an umbrella shape or an inclined plate shape. However, in the present invention, the "dispersion portion" is not necessarily required to have an inclination or the like. Instead, any object can be used as long as the object to be weighed can be dispersed in the plurality of supply troughs 3. Therefore, the dispersion unit does not necessarily need to have the vibration device 2a.

Also, the horizontal component in the supply direction A sent from the dispersion feeder 2 to the supply trough 3 in FIG. 2 and the horizontal component in the supply direction B sent from the supply trough 3 to the pool hopper 4 need always be in exactly opposite directions. However, it is sufficient if the directions are substantially opposite. Further, in the present invention, the support unit 12 and the driving unit 1
7 may be provided inside each hopper 4, 6.

[0028]

As described above, according to the present invention,
The direction in which the objects to be weighed are sent from the supply trough to the hopper device has been reversed, so that the hopper device can be arranged on the dispersing portion side, so that the space below the dispersing portion can be used effectively, so that the combination weighing device can be used. The size can be reduced. In addition, since the hopper devices can be arranged on the dispersion portion side, the upper portion of the hopper device is covered by the dispersion portion. Therefore, dust resistance is improved.

Further, if a drive unit for opening and closing the opening / closing gate is provided at a position opposite to the dispersing unit side, a part or all of the side of the hopper device can be covered by the support unit of the drive unit. In addition, the dustproof property is further improved, and the opening and closing noise of the opening and closing gate can be absorbed by the support portion, so that a soundproofing effect can be obtained.

In a combination weighing device in which a plurality of hopper devices are arranged on a substantially circumference, the hopper device is arranged near the center (inside), so that the opening diameter of the collecting and discharging chute below the weighing hopper is small. Become. As a result, the distance over which the weighing object falls from the collecting / discharging chute is shortened.
The object to be weighed is less likely to be cracked or damaged. In addition, since the opening diameter of the collective discharge chute is reduced, the combination weighing device can be downsized in the height direction.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a combination weighing device showing a first embodiment of the present invention.

FIG. 2 is a plan layout diagram showing an arrangement of a dispersion feeder, a supply trough, and a hopper device.

FIG. 3 is a schematic side view showing an example of a supply trough.

FIG. 4 is a schematic longitudinal sectional view of a combination weighing device showing a second embodiment.

FIG. 5 is a schematic perspective view of a combination weighing device showing a third embodiment.

FIG. 6 is a schematic perspective view of a combination weighing device showing a fourth embodiment.

FIG. 7 is a schematic plan layout diagram of a combination weighing device showing a fifth embodiment.

FIG. 8 is a schematic longitudinal sectional view showing a conventional combination weighing device.

FIG. 9 is a schematic longitudinal sectional view showing another conventional combination weighing device.

[Explanation of symbols]

 2: dispersing section 3: supply trough 4: hopper device 5: open / close gate 12: support section 17: drive section

Claims (4)

[Claims] An apparatus comprising: a supply trough that vibrates an object to be weighed from a dispersing unit to downstream by vibrating; and a plurality of hopper devices having an opening / closing gate, wherein the object to be weighed is distributed to the dispersing unit, the supply trough, and the hopper device. In the combination weighing device that sequentially sends from the top to the bottom, the horizontal component in the direction of sending the object to be weighed from the dispersion unit to the supply trough, and the horizontal component in the direction of sending the object to be weighed from the supply trough to the hopper device, A combination weighing device characterized by being set in directions substantially opposite to each other at overlapping positions. 2. The combination according to claim 1, wherein the drive unit that opens and closes the open / close gate of the hopper device is disposed at a side position of the hopper device and at a position opposite to the dispersion unit side. Weighing device. 3. The combination weighing device according to claim 2, wherein a supporting portion that supports the driving portion is formed to cover a side surface of the hopper device. 4. The combination weighing device according to claim 1, wherein the plurality of hopper devices are arranged substantially on a circumference.