JPH0535299Y2 - - Google Patents

Description

[Detailed explanation of the idea] <Industrial application field of this invention> The present invention relates to a combination weighing device.

<Prior art> (Fig. 4) Combination weighing devices have been used in the past when items such as confectionery and confectionery, which have individual weight variations, are packed into bags in predetermined amounts. .

This type of combination weighing device selects a combination close to a set amount based on the weighing values of the articles weighed in multiple weighing sections consisting of scales, weighing hoppers, etc., and collects the selected articles. It is configured to be discharged all at once via a chute.

However, since such ejecting operation is performed by utilizing the fall of the article due to its own weight, if the drop is large, the article may be damaged.

Particularly when the article is a biscuit or the like, the article is likely to be damaged while sliding from the weighing hopper to the collecting chute and from the collecting chute to its discharge.

For this reason, as shown in FIG. 4, the combination weighing device is configured such that the articles discharged from the hopper 1 are received by the intermediate ring 3 inscribed in the collection chute 2, and then the intermediate ring 3 is raised to discharge the articles. was hotter than before.

In this combination weighing device, the drop of the article discharged from the hopper 1 is divided into two parts, so that less impact is applied to the article, which is effective in preventing damage to the article.

<Problems to be Solved by the Present Invention> However, when attempting to weigh stick-shaped and relatively brittle items such as stick-shaped biscuits, which have been widely manufactured in recent years, using the combination weighing device described above, The rod-shaped articles may be broken or chipped due to the impact shock caused by the angle difference between the direction of the rod-shaped articles discharged from the chute (usually horizontal) and the inner circumferential surface of the collecting chute.

Furthermore, even if the intermediate ring is provided as described above, if the center portion of the rod-shaped article collides with the outer periphery of the intermediate ring, the rod-shaped article will frequently break. becomes counterproductive.

In addition, rod-shaped articles discharged from multiple hoppers at the same time collide with each other in the collecting chute and head toward the discharge outlet in a disorderly direction. It will happen. Furthermore, if a rod-shaped article is longer than the diameter of the discharge port, a bridging condition will occur at the discharge port, making it impossible to discharge the article from the collection chute.

For this reason, it is extremely difficult to use conventional combination weighing devices for this type of bar-shaped article.
At present, we are relying on inefficient and unhygienic manual weighing operations.

The object of the present invention is to provide a combination weighing device that solves these problems.

<Means for solving the above problems> In order to solve the above problems, in the combination weighing device of the present invention, a plurality of hoppers are arranged in an annular shape along the inner edge of the upper opening surface of the collection chute formed in the shape of a funnel. The weighed rod-shaped articles stored in the plurality of hoppers are dropped and discharged almost horizontally with the length direction thereof substantially coinciding with the center direction of the opening surface of the collecting chute, and In a combination weighing device that collectively discharges a predetermined amount of rod-shaped articles from a discharge port at the bottom of the collecting chute, the metering device extends from the upper end of the inner circumferential surface of the collecting chute toward the discharge port side, and extends from the upper end of the inner circumferential surface of the collecting chute. a plurality of guide parts erected so as to partition the entire circumference into a plurality of walls corresponding to the plurality of hoppers, respectively, and a plurality of guide parts protruding from each wall surface between the guide parts of the collection chute, and a plurality of guide parts protruding from each wall surface between the guide parts of the collection chute, The bar-shaped article has a continuous slope curved downward from the top extending in the center direction of the opening surface toward the wall surface on the side of at least one of the guide parts, and the rod-shaped article is discharged from the hopper onto the slope. A plurality of shock-absorbing guide members are provided that guide the guide member toward the guide member while changing the orientation from a horizontal direction to a position substantially parallel to the guide member.

<Function> Because of this configuration, in the combination weighing device of the present invention, the rod-shaped articles discharged from each hopper are
The inclined surface of each buffer guide member changes its posture from the horizontal direction so that it becomes parallel to the guide section and guides it toward the guide section, and when it comes into contact with the guide section, the posture further changes toward the discharge port of the collection chute. Glide while facing towards.

<Embodiment of the present invention> (FIGS. 1 and 2) An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a schematic side view showing a combination weighing device of one embodiment.

In the figure, 10 is a supply conveyor that transports and supplies bar-shaped articles such as confectionery from a production line (not shown).

11 is formed in the shape of a circular umbrella, and the supply conveyor 1
The circular feeder 12 that conveys the articles from 0 to the outer circumferential direction is a feeder arranged radially around the peripheral edge of the circular feeder 11.

These feeders 11 and 12 are attached to the upper surface of a prismatic housing 13.

An intermediate hopper 15 for receiving articles from the feeder 12 is arranged in an annular manner above the side surface of the housing 13, and weighing hoppers 18 are arranged below each intermediate hopper 15.

This weighing hopper 18 has two storage chambers 19, 2.
The discharge gate 16 on the left side of the intermediate hopper 15 opens to supply articles to one storage chamber 19, and the discharge gate 17 on the right side opens to supply articles to the other storage chamber 20. Supplied.

The weighing hopper 18 is directly connected to a weighing device (not shown) in the housing 13, and the articles stored in each storage chamber 19, 20 are weighed by this weighing device.

Each storage chamber 19, 20 has a discharge gate 21, 2.
2 is provided, and each discharge gate of the storage chamber storing the articles selected in combination based on the weight value is opened, and the selected articles are discharged all at once.

A funnel-shaped collection chute 25 is arranged below the housing 13. The collecting chute 25 receives the articles discharged from each weighing hopper 18 arranged annularly along the inner edge of the upper opening surface 25a, and discharges them all at once from the lower discharge port 25b.

The collecting chute 25 is formed into a funnel shape by a plurality of chute plates 26 provided for each weighing hopper 18, as shown in FIG. A guide portion 26a bent inwardly extends from the upper end to the center.

A chevron-shaped buffer guide member 28 is provided on the upper wall surface 26b of each chute plate 26, and has a horizontal top 28a close to the bottom of the weighing hopper 18.

This buffer guide member 28 has two inclined surfaces 28b formed approximately along the discharge direction of the articles discharged from the weighing hopper 18 with the top 28a as the apex;
28c, and its curved surface is formed so as to gently contact the upper wall surface 26b of the shoot plate 26 while curving downward from the top portion 28a toward the guide portions 26a on both sides.

Therefore, a bar-shaped article discharged horizontally from the weighing hopper 18 toward either of the inclined surfaces 28b, 28c is guided while changing its posture so that it becomes parallel to the guide portion 26a, as shown in FIG. The guide portion 26a contacts the guide portion 26a and slides straight toward the discharge port.

A substantially cylindrical intermediate ring 30 is provided at the central inner peripheral portion of the collecting chute 25 so as to be movable up and down.

This intermediate ring 30 prevents the bar-shaped article discharged from the weighing hopper 18 from sliding downward at its outer peripheral portion 3.
It temporarily stops at 0a and divides the drop into smaller pieces.

The opening and closing of the intermediate hopper 15 and weighing hopper 18 and the lifting and lowering of the intermediate ring 30 are performed by a drive device (not shown) inside the housing 13, and the housing 13 is supported by a collecting chute 25. This is done by a support (not shown) from the supporting base 35.

The articles discharged from the collection chute 25 are sent to a packaging machine (not shown) via a packaging conveyor or the like.

<Operation of the above embodiment> (Fig. 3) Next, the operation of the above embodiment will be explained.

The rod-shaped articles supplied from the supply conveyor 10 to the circular feeder 11 are conveyed toward the outer circumference of the circular feeder 11, distributed to each feeder 12, and supplied to each intermediate hopper 15.

The bar-shaped article supplied to the intermediate hopper 15 is transferred to the weighing hopper 18 by, for example, opening the left discharge gate 16.
It is stored in the left-hand storage chamber 19 and weighed using a weighing device.

The feeder 12 is placed in the empty intermediate hopper 15.
The next bar-shaped article is supplied, the right discharge gate 17 is opened, and the article is stored in the right storage chamber 20.

Here, the weight value of the stored article is calculated by subtracting the weight value before storage of the item from the weight value after storage.

The items in each storage room weighed in this way are
Based on the measured values, a combination close to the set amount is selected, and the selected articles are discharged by opening the discharge gate 21 or 22 of the corresponding weighing hopper 18.

Incidentally, the orientation of the rod-shaped articles stored in the weighing hopper 18 is approximately horizontal and faces toward the center of the collection chute, as shown in FIG. 3, by the time they are stored in each storage chamber.

Here, as shown in FIG. 3, when rod-shaped articles such as biscuits stored in one storage chamber 19 are selected as a combination and discharged toward one inclined surface 28b of the buffer member 28, These rod-shaped articles move toward the guide part 26a while gradually changing from a horizontal position facing the center of the collection chute to a position parallel to the guide part 26a, and then come into contact with the guide part 26a and further change their orientation. Guide part 2
It is corrected in the direction along 6a and slides downward.

Therefore, the rod-shaped articles discharged into the collection chute 25 contact the outer circumferential portion 30a of the intermediate ring 30 in a state in which the rod-shaped articles are oriented in substantially the same direction as the sliding direction.

Therefore, even if the bar-shaped article is easily broken, such as a biscuit, the impact when it comes into contact with the intermediate ring 30 is at its weakest, and no breakage occurs.

As the intermediate ring 30 rises, the articles collected around the intermediate ring 30 slide downward again, are discharged from the collecting chute 25, and are sequentially packaged.

Note that the bar-shaped articles discharged from the weighing hopper 18 slide within the collection chute in a state where they are separated from each other without intersecting with the articles from other weighing hoppers until they come into contact with the intermediate ring 30, so that they are not discharged from the collection chute 25. The orientation of the rod-shaped article is not greatly disturbed.

<Other Embodiments of the Present Invention> In the above embodiments, the collection chute 25 is composed of a plurality of chute plates 26, and the rod-shaped articles are aligned in the same direction by guide portions on both sides thereof. However, the collective chute 25 may be formed integrally.

Furthermore, in the above embodiment, an intermediate ring was provided for weighing items that are particularly easy to damage.
This does not limit the present invention, and may be omitted depending on the article.

<Effects of the present invention> As explained above, the combination weighing device of the present invention allows the bar-shaped articles discharged from each hopper in a substantially horizontal direction to be transferred to the inclined surface of the buffer guide member provided on the inner peripheral surface of the collecting chute. Since the rod-shaped articles falling from the hopper are guided toward the guide portion while changing their posture in a direction parallel to the guide portion, the rod-shaped articles falling from the hopper can be received on the inner circumferential surface of the collecting chute with less impact.

Furthermore, since the received articles are brought into contact with the guide section and then slid downward, each bar-shaped article is aligned so that its length direction is parallel to the guide section, and is not ejected from other hoppers. Since the objects slide toward the outlet of the collection chute without intersecting with the objects that have been placed, even if an intermediate ring is provided, the objects will not be damaged by the intermediate ring, and rod-shaped objects with almost the same orientation are ejected from the outlet of the collection chute. This eliminates bending caused by slight protrusions in the collecting chute or by the shock after ejection.

Furthermore, rod-shaped articles having a diameter longer than the diameter of the discharge port of the collection chute can be easily discharged from the discharge port.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing an embodiment of the present invention, Fig. 2 is a perspective view showing the main parts of the embodiment, and Fig. 3 is a schematic diagram showing the operation of the main parts of the embodiment. , FIG. 4 is a schematic diagram showing a conventional device. 18...Weighing hopper, 25...Collection shot,
26...Chute plate, 26a...Guide part, 28
... Buffer guide member, 28b, 18c ... Inclined surface,
30...middle ring.

Claims (1)

[Claims for Utility Model Registration] A plurality of hoppers are arranged in an annular manner along the inner edge of the upper opening surface of the collecting chute formed in the shape of a funnel, and the weighed rod-shaped articles stored in the plurality of hoppers are A combination weighing device that discharges a predetermined amount of rod-shaped articles at once from a discharge port at the bottom of the collection chute by dropping and discharging them almost horizontally with the length direction substantially matching the center direction of the opening surface of the collection chute. , an upstanding wall extending from the upper end of the inner circumferential surface of the collecting chute toward the discharge port side and partitioning the entire circumference of the upper inner circumferential surface of the collecting chute into a plurality of wall surfaces corresponding to the plurality of hoppers, respectively. a plurality of guide portions provided therein; and a plurality of guide portions protruding from each wall surface between the guide portions of the collecting chute, and extending from a top portion extending in the center direction of the opening surface of the collecting chute to a wall surface on the side of at least one of the guide portions. The bar-shaped article discharged from the hopper onto the inclined surface has a continuous inclined surface curved downward, and the rod-shaped article discharged from the hopper onto the inclined surface is directed toward the guide section while changing the attitude from a horizontal direction to an attitude substantially parallel to the guide section. A combination weighing device characterized by being provided with a plurality of guiding buffer guide members.