JPH033890B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a weighing device that supplies a required amount of raw material from a feeder to a container.

Conventionally, in this type of apparatus, a weighing hopper is disposed between a feeder and the container, and it is common to supply exactly the required amount of raw material from the weighing hopper to the container. However, when a weighing hopper is provided in this way, the height of the entire device becomes high, and the weight of the weighing hopper is increased due to the fact that the raw material is not discharged and is stuck to the container, or the raw material is scattered in the supply route from the weighing hopper to the container. There is a drawback that errors occur.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a device that can ensure sufficient weighing accuracy without scattering or adhesion of raw materials by directly feeding the material into a container without going through a weighing hopper, and which can also reduce the height of the equipment. shall be.

The weighing device with a conveyor of the present invention is provided with a horizontally movable slider below the dispensing port of the object feeder, one end of the fixed side is fixed to this slider, and one end of the movable side is fixed to the slider for supplying the object to be weighed. A Roberval mechanism device protruding from the machine side is provided, and a container is attached to one end of the movable side of the Roberval mechanism device to receive supply from the object to be weighed feeder via a load cell,
A biasing device is provided at a stop position of the slider corresponding to the position of the object to be weighed feeder to push up one end of the movable side of the Roberval mechanism so that the supply port of the container approaches the discharge port of the object to be weighed feeder; The present invention is characterized in that the amount of the object to be weighed fed into the container by the object to be weighed feeder is controlled based on the weight signal from the load cell.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

1, 2, and 3 are reservoir hoppers arranged in a horizontal row,
Reference numerals 4, 5, and 6 designate object feeders mounted on the bottoms of the reservoir hoppers 1 to 3, respectively, and are driven by motors 7, 8, and 9, respectively, to perform dispensing. Reference numeral 10 denotes a lateral movement device, which includes a feed screw 11 extending along the arrangement direction of the feeders 4, 5, and 6, and a lateral movement device 1 that is screwed onto the feed screw 11 and is movable in the horizontal direction.
The slider 12 has a slider 12 and a pair of container support arms 13a and 13b extending from the slider 12 toward the feeders 4, 5, and 6. The slider 12 has a feed screw 11 driven by a motor 14. It moves horizontally [in the direction of the arrow].
Reference numeral 15 denotes a vertical movement device for loading and unloading, which is arranged to face the horizontal movement device 10, and includes a feed screw 16 extending in the vertical direction, and an elevating body 17 that is screwed onto the feed screw 16 and can move in the vertical direction. And this elevating body 17
It consists of a pair of container support arms 18a and 18b extending from the side toward the lateral movement device 10.
is moved in the vertical direction (in the direction of the arrow) by the feed screw 16 being driven by a motor (not shown). Further, 19 is a container that receives raw materials from the feeders 4, 5, and 6, and has a pair of arms 20a on the side,
20b is provided protrudingly.

Note that 21 has one end attached to the slider 12 and the shaft 2.
2a, 22b, and the other end is supported by pins 23a, 23.
A pair of upper and lower links 25a, 25b, 2 are pivotally supported on the movable connecting plate 24 at b, 23c, and 23d.
The container supporting arms 13a, 13b are each fixed to a movable connecting plate 24 via a load cell 27. 28 is a stopper for regulating the downward movement of the movable connecting plate 24 more than necessary;
A lower support body 29 extending from the slider 12 side, an upper support body 30 extending from the movable connecting plate 24 side to a position above the lower support body 29, and a lower end screwed into the tip of the upper support body 30. is the lower support 29
It consists of a stopper bolt 31 that comes into contact with the stopper bolt 31. 32, 33, 34 are each feeder 4, 5, 6
A biasing device disposed on the base 35 corresponding to the
It is attached to one end of a shaft 36 extending in a direction perpendicular to the moving direction of the slider 12. motor 3
7 and a gear 40 fixed to the other end of the shaft 36, the upright state as shown in FIGS. 1 and 2 and the state shown in FIG. A lever 41 is driven to the collapsed state, and the movable connecting plate 24 is pivotally supported at the tip of the lever 41, and the movable connecting plate 24 is
The roller 42 contacts the lower end of the roller 42. Furthermore, here, the interval L ₁ between the container support arms 13a, 13b of the horizontal movement device 10 is larger than the width L _{0 of the arms 20a, 20b of the container 19, and the distance L 1 between the container support arms 18a, 18b of the vertical movement device 15 is greater than the width L 0} of the arms 20a, 20b of the container 19.
L ₂ is larger than the width L ₀ ' of the arms 20a, 20b of the container 19.

With this configuration, the slider 12 of the horizontal movement device 10 is moved to the position of the vertical movement device 15,
When the elevating body 17 of the vertical movement device 15 supporting the container 19 with the container support arms 18a, 18b is lowered from above, the container support arms 18a, 18b
are the container support arms 13a, 13 of the lateral movement device 10.
When passing through position b, the container 19 is moved by the lateral movement device 10
Move to the side. After the elevating body 17 is sufficiently lowered, the slider 12 is moved to the position of the feeder of the raw material to be supplied among the feeders 4, 5, and 6. In the state in which the slider 12 moves, the levers 41 are each in a collapsed state, and after the slider 12 stops at a target position, for example, the feeder 4, the lever 41 is driven to be in an upright state. When the lever 41 is raised, the movable connecting plate 24 of the Roberval mechanism device 21 is pushed up by the lever 41 via the roller 42 from the solid line position in FIG. 3 to the imaginary line position, and the container support arm 13
a and 13b lift the container 19. The amount of push-up of the movable connecting plate 24 by the lever 41: d is set such that the tip of the dispensing port 43 of the feeder 4 is inserted into the supply port 44 of the container 19. Also,
In the flange of the dispensing port 43 of each feeder 4, 5, 6,
A sponge 45 is attached to prevent dust from forming between the container 19 and the container 19, and the container 19 is moved from the sponge 4 by the movement of the movable connecting plate 24 according to the amount of push-up: d.
It is pressed against the dispensing port 43 side of the feeder 4 within the elastic range of 5. In this condition, load cell 2
When the raw material is discharged after resetting the weight value of 7, 27 to zero, the discharged raw material is transferred to the load cell 27,
The raw material is fed into the container 19 supported by the slider 12 via the raw material 27 and the Roberval mechanism device 21, and as the raw material is supplied, the load acting on the load cells 27, 27 increases. Therefore, the control device (not shown) of the feeder 4 detects from the outputs of the load cells 27, 27 that the necessary amount of raw material has been fed, and ends the dispensing process. Then, the container 19 that has been supplied with the necessary amount of raw materials is carried out via a route opposite to the carry-in route.

In the above embodiment, the sponge 45 is attached to the flange of the outlet 43, but even if the sponge 45 is a bellows-shaped hood, dust generation to the outside can be similarly prevented.

As explained above, according to the weighing device with a conveyor of the present invention, since it is possible to feed raw materials while weighing the container itself, a weighing hopper is interposed between the feeder and the container as in the conventional method. The height of the equipment can be further reduced because accurate weighing can be performed without the need for a slider, and the container can be carried in and taken out using a slider. In addition, since the container is supported by the slider via the Roberval mechanism and the movable side of the Roberval mechanism is pushed upward by the urging device when feeding raw materials, the supply port of the container is connected to the dispensing port of the feeder. It can be easily approached and is useful for preventing dust generation.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view of a weighing device with a conveyor, FIG. 2 is a side view of FIG. 1, FIG. 3 is an enlarged view of the main part of FIG. 2, and FIG. The figure is the third
FIG. 3 is a plan view taken along line A-A' in the figure. 1, 2, 3...Reservoir hopper, 4,5,6...Measurement object feeder, 10...Lateral movement device, 12...Slider, 13a, 13b...Container support arm, 1
9... Container, 20... Arm, 21... Roberval mechanism device, 27... Load cell, 32, 33,
34... energizing device, 43... dispensing port, 44...
Supply port.

Claims (1)

[Claims] 1. A slider movable in the horizontal direction is provided below the dispensing port of the object to be weighed feeder, and one end of the fixed side is fixed to the slider, and one end of the movable side protrudes toward the side of the object to be weighed feeder. established,
At one end of the movable side of this Roberval mechanism device, a container that receives supply from the object feeder via a load cell is attached, and at the same time, one end of the movable side of the Roberval mechanism device is placed at the stop position of the slider corresponding to the position of the object feeder. A biasing device is provided for pushing up the container so that the supply port of the container approaches the dispensing port of the object to be weighed supplying machine, and the amount of dispensing from the object to be weighed supplying machine to the container is controlled based on the weighing signal of the load cell. A weighing device with a conveyor characterized by: