JP-2026075796-A - Combination scales

Abstract

[Problem] A combination scale is provided which has a weighing unit for combined weighing located below a top plate with multiple parallel input slots for items, and a shutter gate that swings up and down to open and close the input slots, and the shutter gate is designed to be easily detachable and easy to maintain. [Solution] The shutter gate 7 is cantilevered and detachably supported by a gate drive shaft 15 that is fixed in position. [Selection Diagram] Figure 3

Inventors

• 本郷 栄助
• 徳平 遼

Assignees

• 大和製衡株式会社

Dates

Publication Date

20260511

Application Date

20241023

Claims (4)

1. In a combination scale, a weighing unit for combined weighing is positioned below a top plate with multiple parallel input ports for items, and a shutter gate is provided that opens and closes the input ports by oscillating up and down. The aforementioned shutter gate is cantilevered and detachably supported with respect to a gate drive shaft that is fixed in position. A combination scale characterized by the following features.
2. The shutter gate is connected and supported to the gate drive shaft so that it can be inserted and removed in the axial direction while remaining in a state that prevents rotation. The combination scale according to claim 1.
3. The gate drive shaft and the shutter gate are connected by a key. The combination scale according to claim 2.
4. The shutter gate is designed to be able to be withdrawn axially from the gate drive shaft without interfering with the hopper located below it. The combination scale according to any one of claims 1 to 3.

Description

This invention primarily relates to a combination scale for handling objects that are difficult to handle, such as raw meat (broiler chicken, for example) and seafood (squid, octopus, etc.). As an example of such a combination scale, as shown in Patent Document 1, a weighing unit for combined weighing is provided below a top plate with multiple parallel input ports for items, and a shutter gate is provided that opens and closes the input ports by oscillating up and down. Japanese Patent Publication No. 2014-77684 Figure 1 is a perspective view of a combination scale according to one embodiment of the present invention.Figure 2 is a schematic side view of the combination scale shown in Figure 1, crossed longitudinally.Figure 3 is a plan view of the shutter gate.Figure 4 is a side view of the shutter gate, with (a) showing the operating state and (b) showing the extraction state.Figure 5 is a front view of the shutter gate.Figure 6 is a front view of the gate drive unit, where (a) shows the gate closed state and (b) shows the gate open state. A combination scale according to one embodiment of the present invention will be described in detail below with reference to the drawings. Figure 1 shows an overall perspective view of a combination scale according to an embodiment of the present invention, and Figure 2 shows a schematic side view of the combination scale in a longitudinal section. Furthermore, in Figures 3 to 6, Figure 3 is a plan view of the shutter gate, Figure 4(a) is a side view of the shutter gate in use, Figure 4(b) is a side view of the shutter gate in the extended position, Figure 5 is a front view of the shutter gate, Figure 6(a) is a front view of the gate drive unit in the closed position, and Figure 6(b) is a front view of the gate drive unit in the open position. This combination scale is a semi-automatic system designed for manually supplying items that are difficult to handle, such as raw meat like chicken, or seafood like squid and octopus. It consists of a main case 1 erected on the floor, a front case 2 positioned opposite the main case 1 with a front-to-back spacing, a top plate 3 detachably attached to the top of the main case 1, multiple weighing units 4 (nine in this example) arranged horizontally in parallel between the main case 1 and the front case 2, and a discharge conveyor 5 positioned horizontally below these weighing unit groups 4. In the following explanation, the parallel direction of the four weighing units will be referred to as the left-right direction, and the horizontal direction perpendicular to it will be referred to as the front-back direction. The top panel 3 has multiple item input ports 6 arranged in a single row from left to right, facing each weighing unit 4. A worker standing outside the front case 2 manually supplies the items to be weighed to each input port 6. Inside the lower back of each item input opening 6, a pair of shutter gates 7 are positioned opposite each other, each capable of opening and closing by oscillating around a horizontal pivot point a. The weighing unit 4 consists of a supply hopper 8 that temporarily holds the items to be weighed supplied from the item input port 6, sorts and selects the items to be weighed, and then drops and discharges them; and a pair of front and rear weighing hoppers 9 that receive the items sorted and discharged from the supply hopper 8 and measure their weight. The basic configuration of the combined weighing device is as described above. As shown by the solid lines in Figure 5, when the shutter gates 7 are closed and horizontally abutted against each other, the items to be weighed, which have been manually supplied, can be placed and held on the gates. When it is confirmed that the supply hopper 8 of the corresponding weighing unit 4 is empty and closed, both shutter gates 7 are controlled to open downwards in sync, as shown by the dashed lines in Figure 5, and the held items to be weighed are dropped and supplied to the supply hopper 8. The material to be weighed, fed into the supply hopper 8, is sent to the empty of the pair of weighing hoppers 9 for weight measurement. From the numerous weighing values obtained by the weighing hopper group 9, a combination that results in a predetermined weight is calculated and selected. The selected weighing hoppers 9 are then opened and controlled to discharge the weighed material of the predetermined weight. The discharged weighed material of the predetermined weight is placed on the discharge conveyor 5 and transported in one horizontal direction, then sent to the next processing stage, such as a packaging device or packing device. The present invention is characterized by the shutter gate 7 and its support structure, and its details will be described below. The pair of shutter gates 7 are oriented in opposite directions (left and right), and are constructed by welding together a shutter body 7c made of plate material across a support shaft 7a extending horizontally f