JPH037791Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for feeding objects to be weighed to a weighing hopper of a combination scale, and is particularly designed to prevent relatively fragile objects such as sweets and snacks from being broken. This invention relates to a feeding device for metering.

Conventional combination scales are built with high speed weighing as a primary goal and are therefore designed to feed items faster and discharge them faster.
Therefore, it is not suitable for weighing fragile items. The conventional combination scale has a structure as shown in FIG. 1, for example. 1 in the figure is a dispersion feeder, and when an article is supplied to the center thereof, it is sent from the outer periphery to the straight feeder 2 which goes outward, and the straight feeder 2 sends a substantially fixed amount to the corresponding front hopper 3. The article is supplied, and the pre-installed hopper 3 delivers the article to the weighing hopper 4.
Note that 5 is a collection chute and 6 is a packaging machine. According to this, the article to be weighed falls through the space from the delivery end of the linear feeder 2 and collides with the inner surface of the front hopper 3. Also, when the gate 3a of the front hopper 3 is opened and the article is delivered to the weighing hopper 4, the article falls through the space and collides with the inner surface of the weighing hopper 4.
Therefore, there is a problem that the article to be weighed may be damaged, which lowers the commercial value. Conventionally, countermeasures against damage to articles include providing a soft rubber-like material in the area where articles collide, or making the inner surface slope angle of the collection chute 5 gentler. However, since there are parts of the structure where objects fall through the space, collisions between objects cannot be avoided even if rubber is provided, so this is not a sufficient measure to prevent damage to objects to be weighed.

The object of this invention is to provide an article supplying device for a combination scale that solves the above problems by having a structure in which the article to be weighed does not fall through space.

The configuration of the article supplying device for a combination scale according to this invention is such that the article supplying device for a combination scale supplies the article from the feeder to each weighing hopper via the corresponding pre-container.
Each of the pre-containers is rotatably supported around a horizontal axis, and by its rotation, is placed into a receiving state in which it receives an article to be weighed from the feeder and a delivery state in which it sends out the article to be weighed into the weighing hopper. This can be changed, and in the receiving state, it opens upward, and a part of the opening edge is located close to the article delivery end of the feeder, and a part of the container wall slopes downward from a part of the opening edge. In the delivery state, a part of the opening edge is located below the bottom, and a part of the vessel wall forms a shoot shape with a downward slope, contrary to the receiving state. It is characterized in that a drive unit is provided for each of the pre-containers to change between the receiving state and the discharging state.

According to this configuration, when the article to be weighed is sent from the feeder to the pre-container, the pre-container is placed in a receiving state by the drive unit. The upper end of the chute-shaped portion of the container wall of the pre-container in this receiving state is connected to the feeder with almost no difference in level. If the chute-shaped part is formed at a relatively gentle inclination angle suitable for the article to be weighed, the accepted article will slide and reach the bottom, so there will be no collision due to falling against the inner surface of the container. There is no conflict between comrades. When the goods in the pre-container are sent to the weighing hopper,
The pre-container is rotated by the drive unit and placed in the delivery state. The inclination of the chute-shaped part of the pre-container in the delivery state is upside down compared to the above-mentioned receiving state, so that the articles are sent out by sliding along the inclination of the chute-shaped part. If a part of the side wall of the weighing hopper is formed into a similar chute-like portion and connected without a step, the article will not fall through the space and will be fed into the weighing hopper by sliding. Therefore, since the articles do not fall through the space either when they are received in the pre-container or when they are delivered to the weighing hopper, the articles to be weighed can be supplied without damage.

Note that since the drive unit rotates the pre-container around the horizontal axis, an air cylinder or a motor is used.

An embodiment of this invention will be described below with reference to the drawings. In FIG. 2, a dispersion feeder 1, a linear feeder 2, and a packaging machine 6 are the same as the conventional ones explained using FIG. 10 is a pre-container, 11 is a weighing hopper, and 12 is a collection chute.

As shown enlarged in FIG. 3 and FIG.
b, an inclined anterior organ wall 21, a posterior organ wall 22, and a bottom wall 23 connected to these, and both bilateral organ walls 20.
A rotation center shaft 24 is attached to a and 20b, and this shaft 24 is rotatably supported by the machine frame, and an air cylinder coupling portion 25 is provided on the bottom wall 23. This pre-container 10 is provided in succession to each linear feeder 1 and can take a receiving state in which it receives objects to be weighed from the linear feeder 1 and a sending state in which it sends out the received objects to be weighed to the weighing hopper 11. It's becoming like that. In the receiving state, as shown by the solid line in the figure, the prevessel container 10 opens upward and its opening edge 10a is horizontal, and the upper end portion of the prevessel wall 21 forming a part of the opening edge 10a moves straight. This is a chute-like state in which the front container wall 21 is inclined downward from the straight feeder 2 side and continues to the bottom wall 23 as shown in the figure, and is positioned close to the lower side of the feeder 2 for sending out the objects to be weighed. is doing. The sending state is changed from the receiving state to the axis 24 in the direction of the arrow as shown by the imaginary line in the figure.
It is in a state where it is rotated around , and the anterior vessel wall 21 is tilted downward, contrary to the above-mentioned receiving state, and has a chute shape with the bottom wall 23 facing upward.

The air cylinder coupling portion 25 of the pre-container 10 includes:
An air cylinder 26 as a drive unit is connected, and the pre-container 10 is changed into a receiving state and a sending state by the operation of the air cylinder.

The weighing hopper 11 is connected to the pre-container 1 in the delivery state.
The front container wall 21 of 0 is formed by a wall surface 11a that follows the lower side of the chute shape, both side walls (not shown), and a gate 11b, and detects the weight of stored articles. I'm starting to be able to do it.

Note that the collecting chute 12 is configured to collectively discharge the articles discharged from each weighing hopper 11 to the packaging machine 6, but is provided with a guide 12a that regulates the sliding direction so that the articles are When falling from the exit, it turns along the inner wall of the exit to prevent it from jumping and falling.

The operation of the article feeding device of this combination scale is such that the linear feeder 2 moves for a predetermined period of time within one cycle of weighing, and each pre-loading device in which an article is being received from the linear feeder 2 is operated. It slides into the chute and stops, and the articles in some weighing hoppers 11 are selected to be combined to have a predetermined weight from among the weighing hoppers 11 that have been previously supplied with articles, and the selected weighing hoppers 11 When the articles are discharged from the weighing hopper 11, each pre-container 10 corresponding to the empty weighing hopper 11 is tilted to the sending state after the gate 11b of the weighing hopper 11 is closed, and returns to the original receiving state. .

The article feeding device of this combination scale is used when an article is fed from the linear feeder 2 to the pre-container 10 in the receiving state, and when the article is sent from the pre-container 10 in the sending state to the weighing hopper 11. In either case, the article travel path is formed with almost no steps, so the article always moves in a sliding state. Therefore, even if the article to be weighed is relatively easily damaged, it can be fed to the weighing hopper without being damaged.

Although not explained in the above example, the gate of the weighing hopper is equipped with a cushioning rubber, etc.
It is designed to reduce the impact of sliding objects hitting the gate.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal side view showing the general structure of a conventional combination scale, Fig. 2 is a longitudinal side view showing the general structure of an embodiment of this invention, and Fig. 3 is an enlarged view of the pre-container of the same embodiment. FIG. 4 is a side view corresponding to FIG. 3, and FIG. 5 is a schematic plan view of the collection chute in the same embodiment. 2... Straight feeder, 10... Front container, 11
...Measuring hopper, 26...Air cylinder (drive unit), 24...Rotation center shaft.

Claims (1)

[Scope of utility model registration request] In an article supplying device for a combination scale that supplies articles to be weighed from a feeder to each weighing hopper via corresponding pre-containers, each of the pre-containers is rotatable around a horizontal axis. It is supported and can be rotated to change between a receiving state in which it receives objects to be weighed from the feeder and a sending state in which it sends out the objects to be weighed into the weighing hopper. In the receiving state, it opens upward and one side of the opening edge The feeder is located close to the article delivery end of the feeder, and a part of the vessel wall slopes downward from a part of the opening edge to the bottom, forming a chute shape, and in the delivery state, one part of the opening edge part is located below the bottom part, and a part of the vessel wall is formed in a downwardly inclined chute shape opposite to the receiving state,
A device for supplying objects to be weighed for a combination scale, characterized in that a drive unit is provided for changing each of the pre-containers between the receiving state and the sending state.