JPH0531532Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a collection chute in a combination weighing type automatic weighing device.

(Prior art) An object to be weighed is supplied to a plurality of weighing machines arranged in a circle, and a combination calculation is performed based on the weighing values of each weighing machine. A combination type automatic weighing device has been put into practical use that selects the combination that gives the closest value and discharges only the objects to be weighed from the weighing machine that correspond to the selected combination. However, below the weighing machine in this type of automatic weighing device, a gathering chute in the shape of an approximately inverted cone with a large opening at the upper end is provided, and the collection chute is used to collect the objects to be weighed which are discharged from the weighing hopper in each of the above-mentioned weighing machines. The object to be weighed is collected by the chute and then discharged from a small diameter outlet provided at the lower end of the chute, thereby supplying the object to be weighed to a packaging device, etc. provided below. ing.

However, in the conventional collection chute of automatic weighing devices as described above, the following problem has occurred when the object to be weighed is an item that easily rolls, such as spherical candy or snacks. That is,
Depending on the drop position and falling direction of the objects to be weighed dropped from each weighing hopper into the collection chute, the objects to be weighed may not slide straight down in the direction of the discharge port, but may slide down while turning inside the chute. Sometimes. In that case, the time for the object to be weighed to fall in the collection chute becomes longer, and the object to be weighed obtained in the previous weighing operation is replaced by the object to be weighed in the next weighing operation in the chute. They mix together during the fall. Furthermore, if the time interval between weighing operations is lengthened in an attempt to avoid this, the processing capacity per unit time of the automatic weighing device will be reduced.

(Purpose of the invention) The present invention addresses the above-mentioned problems in conventional collection chute, and prevents the object to be weighed from quickly sliding down within the collection chute by preventing the object to be weighed from rotating inside the collection chute. It is an object of the present invention to improve the throughput of an automatic weighing device equipped with this type of collection chute.

(Structure of the invention) That is, the present invention includes a large-diameter receiving port provided below a plurality of hoppers arranged circularly in the main body of the weighing device, and a large-diameter receiving port at the upper end for receiving the objects to be weighed discharged from each of the hoppers. The collective chute has a substantially inverted conical shape with an opening and a small-diameter discharge port provided at the lower end. is constructed by arranging a plurality of gutter-like members each having a substantially fan-shaped planar shape and having bent walls at both ends thereof in a circular manner with the bent walls overlapping each other, and the lower chute Inside,
The present invention is characterized in that a rotation prevention wall for preventing the object to be weighed from turning is erected in the radial direction and continuous with the overlapping portion of the bent walls of the gutter-like member.

According to this configuration, the object to be weighed that is dropped into the collecting chute from the upper hopper is prevented from spirally turning inside the chute by the anti-swing wall installed inside the lower chute. , it will immediately slide down towards the discharge port. Therefore, variations in the sliding time of objects to be weighed in the collection chute and lengthening of the time can be prevented.

By the way, if the anti-swivel wall is erected in the lower chute as described above, if the object to be weighed is an item that rolls easily, such as candy, it will prevent the object from turning in the collection chute as described above. However, when the object to be weighed is long and thin and flexible, the following new problem arises.

In other words, when such an item slides down from the upper chute into the lower chute, it tends to get caught on the upper end of the anti-swivel wall in the lower chute, which prevents it from sliding down smoothly.

However, according to the present invention, the rotation prevention wall in the lower chute is provided so as to be continuous with the portion where the bent walls at both ends of each gutter-like member constituting the upper chute overlap each other. Even if the object to be weighed is long and flexible as described above, it will not get caught on the upper end of the anti-swivel wall in the lower chute, and will therefore always slide down smoothly.

(Example) The present invention will be described below based on an example shown in the drawings.

As shown in FIG. 1, the base 2 of the automatic weighing device 1
A support stand 4 is installed above via a plurality of support legs 3 . This supply section 5 includes a dispersion table 7 installed in the center of the support base 4 via a vibrator 6, and vibrators 8...8 below the periphery of the distribution table 7.
A plurality of supply troughs 9 installed radially through the
. . . 9, and pool hoppers 10 .
It is composed of.

Moreover, on the base 2, a weight detector 11...
11 and a weighing hopper 12 attached to each weight detector.
A plurality of weighing machines 13...13 consisting of......12 are connected to each of the troughs 9...9 or pool hoppers 10...
...They are arranged in a circle corresponding to the number 10. Here, each pool hopper 10...10 and the weighing hopper 12...12 have these hoppers 10...1
Gates 10a...10a, 12a...12a are provided for opening and closing the lower discharge ports at 0, 12...12.

Furthermore, hopper opening/closing devices 14 . . . 14 are provided on the lower surface of the support base 4 in correspondence with each set of the pool hopper 10 and the weighing hopper 12 located vertically. This hopper opening/closing device 14...14
Similarly, the motor 1 provided on the lower surface of the support base 4
5, when receiving a command to discharge the object to be weighed, the pressing members 14a and 14b are respectively protruded and the gates 10a and 12a of the pool hopper 10 and the weighing hopper 12 located on the sides thereof are opened. There is.

Further, below each of the weighing hoppers 12...12, there is a collection chute 16 whose external shape is approximately an inverted cone shape.
is provided. This collecting chute 16 has a large diameter receiving port 16a opened at the upper end to receive the objects to be weighed discharged from each weighing hopper 12...12, and a small diameter receiving port 16a at the lower end for discharging the objects to be weighed. A discharge port 16b is provided. A packaging device 17 is provided below the discharge port 16b of the collection chute 16, and the objects to be weighed discharged from the discharge port 16b are thrown into an introduction section 17a of the packaging device 17. There is. The collecting chute 16 also includes a plurality of gutter-like members 18', 18'', .
an upper chute 18 formed by arranging... in a circular shape;
It consists of a lower chute 19 connected below the upper chute 18, and these chute 1
Bracket 20 fixed to each outer peripheral surface of 8 and 19
... is supported by the base 2 via 20, 21, 21. Here, each gutter-like member 18', 18'', .
It corresponds to one to three weighing hoppers 12...12, and has bent walls 1 at each side end.
8a...18a are each formed,
Bending walls 1 of adjacent gutter-like members 18', 18'', ...
8a and 18a are arranged in a mutually superposed state.

On the other hand, inside the lower chute 19 there are anti-swivel walls 19a...19a for preventing the objects to be weighed from turning.
are erected in the radial direction. This rotation prevention wall 1
9a...19a are three fan-shaped structural members 19', 19'', 19 that constitute the lower chute 19, as shown enlarged in FIGS. 3 and 4.

Claims (1)

[Scope of utility model registration request] It is provided below a plurality of hoppers arranged in a circle, and has a large-diameter receiving port at the upper end for receiving the object to be weighed discharged from each of the hoppers, and a small-diameter discharge port at the lower end. It is a collective chute in the shape of an approximately inverted cone, and the entire chute is composed of an upper chute and a lower chute connected below the upper chute. It is constructed by arranging a plurality of gutter-like members each having a bent wall in a circular shape with the bent walls overlapping each other, and inside the lower chute, there is provided a gutter-like member to prevent the object to be weighed from turning. A collection chute for an automatic weighing device, characterized in that a rotation prevention wall is erected in a radial direction so as to be continuous with the overlapping portion of the bent walls of each of the gutter-like members.