JPH058497Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application of the Invention> The present invention relates to a multi-gate hopper of a combination weighing device that combines the weight values of objects to be weighed supplied to a plurality of combination hoppers and discharges them collectively at a target weight.

<Prior art> (Fig. 7) Combination weighing devices have been used in the past to efficiently group objects to be weighed, such as sweets and fruits, whose individual weights vary, into a target weight.

In this type of combination weighing device, in order to increase the operational efficiency of supplying and discharging objects to be weighed, or to increase the accuracy of combination,
A combination hopper having multiple combination hoppers or multiple storage chambers is arranged, and in order to selectively supply objects to be weighed to these combination hoppers or storage chambers, a hopper (hereinafter referred to as a , multi-gate hoppers) are arranged.

FIG. 7 is a schematic diagram showing a double-opening hopper with two discharge gates as an example of a multi-gate hopper of such a combination weighing device.

In the figure, a double-opening hopper 1 is open at the top and has an approximately inverted triangular cross section, and discharge gates 2 and 3 are attached to the open sloped portions on both sides of the bottom so as to be rotatable outward. It is being At the bottom of the discharge gates 2 and 3, there is a double-opening hopper 1.
The lower ends 2a and 3a are respectively bent outward in a dogleg shape. A separation plate 4 having a triangular cross section is provided at the bottom of the lower end portions 2a and 3a.
are provided along the lower end portions 2a, 3a.

Therefore, when one discharge gate is opened, the object to be weighed supplied from the open upper part is discharged slightly diagonally downward along the other discharge gate and the slope of the separation plate 4.

A combination hopper 5 is arranged below the double-opening hopper 1, and the object to be weighed discharged from the double-opening hopper 1 is stored in one storage chamber (5a or 5
b) The discharge gate (7 or 8) of the storage chamber containing the selected combination of objects to be weighed.
is opened and collectively discharged together with other selected objects to be weighed.

<Problems to be solved by the present invention> However, the above-mentioned double-door hopper 1
When individually wrapped items to be weighed, such as candies, are supplied, the wrapping paper of the items to be weighed is placed at the lower end 2 of the discharge gate 2, as shown in FIG.
It gets caught between a and the separation plate 4, and the discharge gate 3
A situation occurs in which the fluid is not ejected even when the is opened.

When the discharge gate 3 is closed in this state, there is a problem in that the object to be weighed is caught between the lower end 3a of the discharge gate 3 and the separation plate 4 and may be damaged.

In addition, this combination weighing device
If the weight value of the object to be weighed accommodated in the double hopper 1 is to be detected, the detected weight value is the weight value of the object to be weighed that is actually ejected. The value increases by the weight of the objects to be weighed, and there is a problem in that the weight or quantity of the objects to be weighed that have been selected in combination may be insufficient.

In addition, this combination weighing device has a combination hopper 5.
Assuming that the weight values of the objects to be weighed stored in the respective storage chambers 5a and 5b are to be detected, as described above, the next object to be weighed is When the object to be weighed is supplied to the double-opening hopper 1, a part of the object to be weighed falls irregularly from between the discharge gate 3 and the separation plate 4, disturbing the weighing operation of the combination hopper 5. Furthermore, if the object to be weighed falls from the double-door hopper 1 as described above after this weighing operation is completed, the weight value of the object to be weighed discharged from the combination hopper 5 will be different from the weighed weight value. There was a problem in that the weight or number of objects to be weighed in a group would be excessive due to the larger size of the objects to be weighed.

<Purpose of this invention> This invention was made in view of the above circumstances.
To provide a multi-gate hopper of a combination weighing device which prevents wrapping paper or the like of objects to be weighed from being caught, causes no damage to objects to be weighed, and eliminates excess or deficiency of discharged objects.

<One Embodiment of the Present Invention> (FIGS. 1 to 5) Next, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the overall configuration of a combination weighing device equipped with a multi-gate hopper according to the present invention, and FIG. 2 is a sectional view taken along the line -' in FIG. 1.

In the figure, 15 is a conveyor that sequentially carries out and supplies the objects to be weighed, and 16 is a conveyor 1.
A circular umbrella-shaped circular feeder, 17 ₁ - disposed below the discharge side of the conveyor 15 and conveying the object to be weighed supplied from the conveyor 15 in the outer circumferential direction by vibration action;
17 ₈ is a feeder that is arranged radially below the periphery of the circular feeder 16 and causes the object to be weighed supplied by the circular feeder 16 to fall downward on the discharge side by vibration.

Circular feeder 16 and feeder 17 ₁ to 17 ₈
is attached to the upper part of the housing 0 fixed above the center of the base 19 by four pillars 18, 18, 18, 18, and below each feeder 17 ₁ to 17 ₈ are Intermediate hoppers 21 ₁ to 21 ₈ are arranged, and below each intermediate hopper 21 ₁ to 21 ₈ ,
Weighing hoppers 22 ₁ to 22 ₈ are arranged, respectively. Each of the intermediate hoppers 21 ₁ to 21 ₈ and each of the weighing hoppers 22 ₁ to 22 ₈ is detachably attached to each side surface portion 20 ₁ to 20 ₈ of the casing 20, which has an octagonal cross section.

Inside this housing 20, there are eight measuring devices 24 ₁
24 ₈ and an opening/closing drive device (not shown) for opening and closing the discharge gates of the intermediate hoppers 21 ₁ to 21 ₈ and the weighing hoppers 22 ₁ to 22 ₈ .

FIG. 3 is a diagram showing a part of this housing 20, each of the intermediate hoppers 21 ₁ to 21 ₈ and the weighing hoppers 22 ₁ to 22 ₈ .

In the figure, a protrusion piece 202 is attached to the upper side of the side surface portion 201 ₁ of the housing 20, which is formed in a U-shape and whose opposing sides protrude toward the outside of the side surface portion 201 ₁ . This protruding piece 202 is for locking each intermediate hopper 21 ₁ , and for this purpose,
Recesses 202a and 202b are provided in the upper portions of both opposing pieces. The recess 202a is formed by cutting downward from the upper ends of the front parts of both opposing pieces, and the recess 202a
2b is formed by cutting diagonally downward from the rear upper end.

The lower part of the protruding piece 202 is formed similarly to the protruding piece 202, has recesses 203a and 203b for locking the weighing hopper ₂₂₁ , and is directly connected to the measuring instrument ₂₄₁ housed in the housing 20. protruding piece 203
is provided.

In addition, below both protruding pieces 202 and 203, drive levers 204a, which are rotatably connected to an opening/closing drive device in the housing 20, are provided, in order to open and close the intermediate hopper 21 ₁ and the weighing hopper ₂₂ 1. 20
4b, 205a, and 205b are provided, respectively.

As shown in the same figure and FIG. 4, the intermediate hopper 21 ₁ has an open upper part and a substantially inverted triangular cross section, and the open inclined parts on both sides of the lower part include
Discharge gates 211 and 212 are respectively attached so as to be rotatable in both outward directions.

At the bottom of the discharge gates 211 and 212, there are abutment portions 211a and 211a, respectively, which are bent and extended downward.
212b are provided so as to be in contact with each other, and bent portions 211b and 212b are formed from the lower end sides of the abutting portions 211a and 212a, respectively, in the direction of inclination of the opposing discharge gates.

Further, a separation plate 213 formed to connect the front side and the back side in a U-shape is attached to the intermediate hopper 21 ₁ . It is formed to have a triangular cross section along the portions 211b and 212b.

This separation plate 213 has left-right symmetrical arm parts 213b, 213c formed on the back side of the hopper, and each arm part 213b, 213c has actuating pieces 214, 215 formed in a dogleg shape.
is attached so that it can rotate freely using its center as a fulcrum. On one end side of the actuating pieces 214, 215,
Arms 211c, 21 of discharge gates 211, 212
Connecting plate 216, 2 rotatably attached to 2c
17 is rotatably attached.

Moreover, the actuating pieces 214, 215 and the connecting plate 216,
A spring 218 is locked between the respective connecting portions of the separation plate 217, and the actuation pieces 214, 215 receive force inwardly due to the spring 218, but the arm portions 213b, 213c of the separation plate 213 Stoppers 213d and 213e protruding from the top are actuating pieces 2.
14, 215, both ejection doors 21
1,212 is closed, the actuating piece 214,
215 and the connecting plates 216 and 217 are arranged substantially on a straight line.

A U-shaped locking portion 219 is provided at the upper part of the back side of the intermediate hopper 21 ₁ to lock the intermediate hopper 21 ₁ to the protruding piece 202 of the housing 20 . The locking portion 219 has two support rods 21 at the front and rear between the opposing pieces 219a and 219b.
9c and 219d are formed horizontally.

The two support rods 21 of this locking portion 219
The intermediate hopper 21 ₁ is attached to the casing 20 by being respectively engaged with recesses 202 a and 202 b provided at the front and rear of the protruding piece 202 of the casing 20 ₁ .

The weighing hopper 22 ₁ disposed below the intermediate hopper 21 ₁ has an internal volume approximately twice that of the intermediate hopper 21 ₁ and is formed in a substantially similar shape.

That is, the weighing hopper ₂₂₁ is
As shown in the figure, the top is open and the cross section is approximately inverted triangular, and discharge gates 221 and 222 are attached to the sloped portions on both sides.

In addition, at the bottom of the discharge gates 221 and 222,
Bent parts 221a and 222a are formed which are bent in the direction of inclination of the opposing discharge gates, and similarly to the intermediate hopper 21 ₁ , these bent parts 221a and 22
A bottom portion 22 having a triangular cross section formed along 2a.
A U-shaped separation plate 223 having a diameter of 3a is attached to connect the front side and the back side of the weighing hopper ₂₂₁ .

The separation plate 223 has symmetrical arm portions 223b, 223c formed on the back side of the hopper, and actuating pieces 224, 225 are rotatably attached to the arm portions 223b, 223c in the same manner as described above. Connecting plates 226 and 227 are rotatably attached to connect one end side of the operating pieces 224 and 225 to the arm portions 221b and 222b of the discharge gates 221 and 222, respectively.

Actuation pieces 224, 225 and connecting plates 226, 227
A spring 228 is locked between the connecting portions, and similarly to the above, stoppers 223d and 223e protruding from the upper portions of the arms 223b and 223c of the separation plate 223 stop the inward movement of the operating pieces 224 and 225. are doing.

In addition, in the center of the inside of the weighing hopper 22 ₁ , there is a bent portion 221 of the discharge gates 221 and 222 from the top.
A partition plate 229 is attached so as to come into contact with the weighing hopper 222a, and the weighing hopper ₂₂₁ is
Two storage chambers 2 are created inside by this partition plate 229.
3 ₁ and 23 ₂ are formed.

At the upper part of the back side of the weighing hopper 22 ₁ , there is a U-shaped lock in order to lock the weighing hopper 22 ₁ to a protruding piece 203 directly connected to the measuring device 24 ₁ in the housing 20. A section 230 is provided. This locking portion 230, like each intermediate hopper 21 ₁ ,
Two front and rear support rods 230c, 23d are horizontally suspended between opposing sides 230a, 230b.

This locking portion 230 is connected to the protruding piece 20 of the housing.
3, the weighing hopper 22 ₁ is connected to the weighing device 24 ₁
is supported by

When the intermediate hopper 21 ₁ and the weighing hopper 22 ₁ are attached to the side surface 201 ₁ of the housing, the free end sides of the actuating pieces 214 , 215 , 224 , 226 of each hopper are connected to the drive provided on the side surface 201 ₁ of the housing. Levers 204a, 204b, 205a, 205b
located at the bottom of each. Therefore, as shown in FIG. 4b, for example, when the actuating piece 214 of the intermediate hopper ₂₁₁ is rotated clockwise by the drive lever 204a, the connecting portion between the actuating piece 214 and the connecting plate 216 moves outward. As the connection plate 216 moves downward, the discharge gate 211 opens. When the drive lever 204a returns, the actuating piece 2
14 and the connecting plate 216 returns inward due to the biasing force of the spring 218, and the discharge gate 211 is closed. In addition, the discharge gate 21 on the opposite side
The opening and closing operations of the respective discharge gates of 2 and measuring hoppers 22 ₁ to 22 ₈ are similarly performed by rotation of each drive lever.

Intermediate hoppers 21 ₁ to 2 configured as above
1 ₈ and below the weighing hoppers 22 ₁ to 22 ₈ .
As shown in FIG. 1, a collection chute 25 having a circular opening 25a and having an inverted truncated conical shape is arranged so as to receive the objects to be weighed discharged from the weighing hoppers 22 ₁ to 22 ₈ . has been done. The collection chute 25 is provided with a discharge port 25b for discharging the collected objects to be weighed below the base 16.

Reference numeral 26 denotes a discharge hopper that temporarily stores the objects to be weighed that have been collected by the collection chute 25 and discharges them at a predetermined timing; and 27, a package that collectively packages the objects to be weighed that have been discharged from the discharge hopper 26. It is a machine.

<Operation of the above embodiment> Next, the operation of the above embodiment will be explained.

The objects to be weighed that are supplied from the conveyor 15 to the circular feeder 16 are fed to the feeders 17 ₁ to 1, respectively.
7 ₈ is accommodated in the intermediate hoppers 21 ₁ to 21 ₈ . At this time, for example, if there is no object to be weighed in both the storage chambers _{23 1 and} 23 ₂ of the weighing hopper 22 1, the drive lever 204a is rotated counterclockwise (the third (in the figure) rotates.

As a result, as shown in FIG. 4b, the operating piece 214 of the intermediate hopper ₂₁₁ rotates clockwise (in FIG. 4b), and the discharge gate 211 opens almost vertically. At this time, intermediate hopper 21 ₁
The object to be weighed in the weighing hopper 2 falls along the slope formed by the other discharge gate 212 and the triangular bottom 213a of the separating plate 213, and reaches the weighing hopper 2.
It is stored in the storage chamber 23 ₁ on the left side of 2 ₁ .

The objects to be weighed stored in the storage chamber 23 ₁ are weighed by the weighing device 24 _1. During this time, a new object to be weighed is supplied from the feeder 17 ₁ to the intermediate hopper 21 ₁ , and after a predetermined time, the drive lever is turned off. 204b is driven, the discharge gate 212 is opened, and the object to be weighed is stored in the storage chamber 23 ₂ on the right side of the weighing hopper 22 ₁ in the same manner as described above.

In this way _, the objects to be weighed stored in both storage chambers 23 ₁ and 23 ₂ are selected in combination based on their respective weight values. As a result of this combination selection, for example, When the objects to be weighed are selected as a combination, the drive lever 205a is rotated counterclockwise in FIG. 3 by the opening/closing drive device. Therefore, the operating piece 224 of the metering hopper 22 ₁ rotates clockwise in FIG. 5, and the discharge gate 221 opens in a substantially vertical direction. As a result, the objects to be weighed in the storage chamber ₂₃₁ are discharged downward and are stored in the ejection hopper 26 via the collection chute 25 together with the objects ejected from other weighing hoppers, and are packaged at a predetermined timing. It is discharged to a machine 27 and packed into bags. In addition, the drive lever 20
Each discharge gate 211, 212, 221, 2 opened by 4a, 204b, 205a, 205b
22 are closed by the biasing forces of springs 218 and 228, respectively, when the driving force of the drive lever disappears.

Thereafter, similar operations are repeated, and the objects to be weighed are collected and discharged in sequence.

<Another embodiment of the present invention> (Fig. 6) In the above embodiment, the present invention was applied to an intermediate gate having two discharge gates, but the present invention can be similarly applied to an intermediate hopper having a plurality of discharge gates. In addition, in a weighing hopper that does not have multiple storage chambers, a plurality of discharge gates are provided so that the objects to be weighed weighed in this weighing hopper are selectively supplied to a plurality of combination hoppers. teeth,
The present invention can be directly applied to a weighing hopper.

Further, in the above embodiment, the abutting portions are provided so that both lower ends of the intermediate hopper touch each other, but this is because the abutting portions 21 and 21 are provided as shown in FIG.
A part of 1a', 212a' may be formed in a concave shape to reduce the contact area of both abutting parts.
This has the effect of preventing the discharge gates from sticking together due to the viscous object to be measured.

<Effects of the present invention> Since the multi-gate hopper of the combination weighing device of the present invention is configured as described above, the wrapping paper of the stored object to be weighed is separated from the separating plate and the discharge gate, unlike in the conventional case. When the discharge gate is opened, the discharge is ensured without being caught between the two.

Therefore, the object to be weighed will not be damaged by being caught between the discharge gates, and since the discharge gate is completely closed, there will be no excess or deficiency of the discharged objects to be weighed relative to the measured value.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the overall configuration of a combination weighing device to which the present invention is applied, and Fig. 2 is a -
'A cross-sectional view, FIG. 3 is a perspective view showing the main part of FIG. 1. 4a and 4b are rear views showing an embodiment of the present invention, and FIG. 5 is a rear view showing a weighing hopper. FIG. 6 is a schematic view showing another embodiment of the present invention, and FIGS. 7 and 8 are schematic views showing a conventional double-door hopper. 17 ₁ ~ 17 ₈ ... feeder, 21 ₁ ~ 21 ₈ ...
Intermediate hopper, 22 ₁ to 22 ₈ ...Measuring hopper, 21
1a, 212a... Butt portion, 213... Separation plate, 221, 222... Discharge gate, 223...
Separation plate, 224, 225... Actuation piece, 229...
Partition plate, 23 ₁ to 23 ₁₆ ...Storage room, 24 ₁ to 24 ₈
...Weighing instrument, 25...Collection shot.

Claims (1)

[Scope of Claim for Utility Model Registration] A hopper for selectively supplying objects to be weighed to a plurality of combination storage sections in a combination weighing device that combines and collectively discharges objects to be weighed stored in a plurality of combination storage sections, , a plurality of independent discharge gates provided at an angle at the lower part of the main body, each having an abutment portion extending downward from the lower end of each incline; A multi-gate hopper of a combination weighing device, comprising a separator having a triangular cross section.