JPH0528236Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a combination scale that uses multiple weighing machines to bring an object to be weighed to a predetermined target weight, especially when it is attached to a measuring unit such as a load cell weighing mechanism. This invention relates to a hopper for a device that receives and weighs items.

(Prior Art) Figures 8 and 9 show one unit of a hopper for an automatic weighing device of the prior art. This hopper consists of a fixed frame a and a movable arc gate b. The fixed frame a is surrounded by four vertically oriented base walls a1, both side walls a2, and opposite walls a3, and is open to the top and bottom, and the gate b is formed in a U-shape by an arcuate wall b1 and both wing pieces b2. In the closed state shown in FIG. 9, the arcuate wall b1 surrounds the open lower surface of the frame body 1 and forms a receiving tank for receiving and temporarily storing the article c inputted from the upper surface. Gate b is pin axis d at the center of the arc
After weighing, the rod e1 of the cylinder e advances in the x direction and pushes the receiving roller f.
The lower surface of the frame is opened and the stored items c are discharged downward.

(Problem to be solved by the invention) When the item e to be weighed is raw meat, etc., the friction with the metal wall is small in a moist state, so when the gate b starts to open in the y direction, the product e is placed on the slope of the gate. However, in a partially dry state, it tends to stick, and it sticks to gate b and moves toward the opposite wall a3, as shown in Figure 9. It gets caught between the arcuate wall b1 and the opposite wall a3 of the frame, and gets scratched or torn. This not only deteriorates the quality of the product, but also causes the product to become trapped and not be able to be ejected within the specified time, or to be mixed into the next product, causing weighing errors. Functionality will be fundamentally adversely affected.

The purpose of the present invention is to provide a hopper for an automatic weighing device with an improved structure that does not cause pinching or jamming of items even when they are in a sticky state, in order to solve the above-mentioned problems of the prior art. shall be.

(Means for Solving the Problems) In the present invention, the above object is achieved by structural changes starting with omitting the opposing wall of the fixed frame, which was considered essential.

That is, the hopper for an automatic weighing device of the present invention is configured to temporarily store items to be weighed that are input from an open upper side, and discharge them from the lower side after weighing. A fixed frame A is fixedly attached to the automatic weighing device main body side by a pair of horizontal support fittings 1, 1, and rotates and returns around a horizontal axis provided at an extension of the horizontal support fittings 1, 1. The fixed frame body A includes a vertical base wall A1 and fan-shaped side walls A2, A2 having curved edges centered on the pin axis. Depending on the top surface, facing the base wall,
The arcuate gate B has a U-shaped cross section that is open across the lower surface and has a U-shape in plan view, and the arcuate gate B has a U-shaped cross section that complements the open facing and lower surfaces of the base wall of the fixed frame A. It is composed of an arcuate wall B1 made of an arcuate curved surface that matches the curved edge of the fixed frame A, and wing pieces B2, B2 located on both sides of the arc wall B1, so that the fixed frame A is opened. The arcuate gate B is pivotally supported by the pin shafts 2, 2, and is provided outside the arcuate gate B so that the arcuate gate B surrounds the base wall facing and lower surface portions. Driving means such as air cylinders 4 are provided at intervals to the receiving portions of the receiving rollers 6, etc., and the driving means drives the arcuate gate B which has been lowered by gravity to the closed position where it abuts the base wall A1. The fixed frame A is characterized in that it can be rotated to an open position in which the lower surface of the fixed frame A is opened downward.

(Function) In the present invention, even if the opposite wall of the fixed frame is omitted, when the arcuate gate is closed, it is complemented by the arcuate wall of the arcuate gate that extends to the open facing part to receive, store, and weigh items. The tank function that makes this possible will be preserved. When discharging the articles, the circular arc wall of the rotating arc-shaped gate is rotated upward by the driving means, so that the articles can be easily discharged downward.
Since there is no opposing wall of the fixed frame body between which the stored items are sandwiched, the problem of items getting caught is fundamentally eliminated.

(Example) Hereinafter, the present invention will be specifically explained based on an example with reference to FIGS. 1 to 7. FIG. 1 is a plan view showing an embodiment of the basic configuration of one unit of the hopper for an automatic weighing device of the present invention, and FIG. 2 is a side view of FIG. 1.

The fixed frame A has a base wall A1, both side walls A2, A2
It is formed into a U-shape when viewed from above, and both side walls A
It is fixedly supported by the support fittings 1, 1 on the outside of 2, A2, and is open toward the upper surface, the base wall surface, and the lower surface.

The arc-shaped gate B includes an arc wall B1, both wings B2,
B2 is formed into a U-shape, and both side walls of the frame A
2. Both wing pieces B2, B that overlap on the outside of A2
2, the pin shaft 2 at the center position of the arcuate wall B1,
2, it is rotatably supported by the extension of the support fitting 1 and combined with the fixed frame A.

The arcuate wall B1 of the arcuate gate B has its lower edge aligned with the base wall A in the closed state of the lower limit of rotation shown in FIGS. 1 and 2.
1, the open lower surface of the fixed frame body A and the opposite wall of the fixed frame A are extended slightly upward to form a receiving tank by supplementing the opposite wall that does not exist, and the following wing pieces B2, B2 are rotated. A small portion is cut out from the upper edge so that the intersecting part of the support metal fitting 1 can be avoided when it is raised.

In this state, the product 3 such as raw livestock meat introduced from the open top surface is received in a receiving tank formed by the fixed frame A and the arcuate gate B, where it is temporarily stored and weighed.

In order to discharge this article, the rod 5 of the air cylinder 4, which is a driving means, advances in the x direction, contacts and pushes the gate opening roller 6 that constitutes the receiving part provided on the arcuate gate B, and pushes it against the arcuate wall B1. is rotated in the y direction to open the open lower surface of the fixed frame A, and the stored items 3 are released in the z direction by gravity.

Therefore, if an item that has become sticky remains on the arcuate wall B1 as the arcuate gate B rotates,
Even if you go up in the direction, there is a conventional technology opposite wall a3
Since there are no cracks, there is no possibility of biting. Furthermore, when the article 3 adheres to the wall B1 and ascends, the angle of the wall B1 becomes more vertical as the opening degree of the gate increases, making it easier to slip and allowing the article to be discharged. Of course, if the item has a small coefficient of friction and is slippery, it will be discharged at a slight tilt angle. When the discharge is completed, by retracting the rod 5 of the air cylinder 4, the gate returns to its original closed position by its own weight. Since the coefficient of friction varies depending on the item, the gate is opened for the shortest time without causing jamming between the lower edge of the arcuate wall B1 and the lower end of the base wall A1.

Figures 3 and 4 show a practical example in which two sets of hoppers having the structure of the above-mentioned one unit are combined back to back on the base wall A1, and are equivalent to the embodiments in Figures 1 and 2. Each part is indicated by the same reference numeral, and redundant explanation will be omitted.

Instead of simply arranging the two sets of hoppers back to back on the base wall A1 of the fixed frame A, the integrated fixed frame can be formed into an H-shape in plan view as an integrated common wall, thereby streamlining the members. The intersecting wing pieces B2 of the two sets of arcuate gates B are arranged so that the inner and outer sides are different from each other to prevent interference. Further, the gate opening rollers 6 attached to each arcuate gate B are arranged on opposite sides of each wing set B2 to avoid interference.

In this embodiment, as shown in FIG. 5 or 6, the arcuate gates of each set of left and right hoppers are opened separately to discharge the stored items individually, or as shown in FIG. 7, both sets are simultaneously discharged. It can also be opened and discharged at the same time.

(Effects of the invention) As described above, according to the invention, both the basic embodiment of one hopper and the practical embodiment of combining two hoppers are surrounded by a fixed frame and a movable arc-shaped gate. Since items do not get caught in the receiving tank, the weighed items can be reliably discharged within the specified time, and the items are not scratched or cut due to getting caught, preventing quality deterioration. can do. The practical embodiment has fewer parts and fewer welded parts than the prior art, and is advantageous in terms of processing.

[Brief explanation of the drawing]

Figure 1 shows one of the hoppers for the automatic weighing device of the present invention.
A plan view of a basic embodiment of the unit, Fig. 2 is a side view thereof, Fig. 3 is a plan view of a practical embodiment of combining two hoppers, Fig. 4 is a side view thereof, and Fig. 5 is its right side. A side view with parts omitted to clearly show the opening operation state of the hopper, Fig. 6 is a partially omitted side view of the left hopper in the open state, Fig. 7 is a partially omitted side view of the hopper on both sides in the open state, and Fig. 8 is the conventional FIG. 9 is a plan view of a hopper for an automatic weighing device according to the technology, and FIG. 9 is a side view thereof. A... Fixed frame body, A1... Base wall, A2... Side wall, B... Movable arcuate gate, B1... Arc wall,
B2... Wing piece, 1... Support metal fitting, 2... Pin shaft,
3... Goods, 4... Air cylinder, 5... Rod, 6... Gate opening roller, x, y, z... Moving direction, a... Fixed frame, a1... Base wall, a2...
...Side wall, a3... Opposite wall, b... Arc-shaped gate, b
1... Arc wall, b2... Wing piece, c... Item, d...
...Pin shaft, e...Cylinder, e1...Rod, f
...Receiving roller.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A hopper for an automatic weighing device configured to temporarily store items to be weighed that are introduced from an open upper side and discharged from the lower side after weighing, a pair of said hoppers. horizontal support bracket 1,1
A fixed frame body A is fixedly attached to the automatic weighing device main body side, and an arc-shaped frame body is provided so as to be rotatable and returnable around a horizontal axis provided in an extension of the horizontal support fittings 1, 1. The fixed frame body A is constructed by a vertical base wall A1 and fan-shaped side walls A2, A2 having curved edges centered on the pin axis, so that the fixed frame body A is connected to the upper surface and the base wall. The arcuate gate B is configured to have a U-shape in plan view, with the facing and lower surfaces open, and the arcuate gate B is formed into a corner that complements the open facing and lower surfaces of the base wall of the fixed frame A. It is composed of an arcuate wall B1 made of an arcuate curved surface that matches the curved edge of the fixed frame A, and both wing pieces B2, B2 located on both sides thereof so as to have a letter-shaped cross section, and when the fixed frame A is opened. The arcuate gate B is pivotally supported by the pin shafts 2, 2 so that the arcuate gate B surrounds the base wall facing and lower surface parts that have been formed, and the outer side of the arcuate gate B is Driving means such as air cylinders 4 are provided at intervals to receiving portions such as receiving rollers 6 provided in A hopper for an automatic weighing device, characterized in that the lower surface of the fixed frame A can be rotated to an open position in which the lower surface of the fixed frame A is opened downward by the operation of a driving means. (2) A pair of U-shaped fixed frames A are attached to each other's base wall A1.
Scope of the Utility Model Registration Claim 1: A two-tank type utility model, which is formed into an H-shape in plan view by matching the above, and is arranged in combination with circular arc-shaped gates B intersecting with each other at the wing part B2 for each fixed frame body A. Hopper for the automatic weighing device described.