JPH076501Y2 - Feeder for combination scales - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a feeder used for a distributed feeder of an automatic combination scale.

[Conventional technology]

2. Description of the Related Art Conventionally, a combination scale has been used in order to efficiently group together articles such as confectionery, fruits, and dry foods, each of which has a variation in weight, in a substantially predetermined amount. FIG. 4 shows an example of such a distributed feeder of a conventional combination scale. In the figure, the articles to be weighed supplied from above to the top of the circular feeder 1 formed in the shape of a circular umbrella are conveyed in the outer peripheral direction by the vibrating action of the circular feeder 1, and are radially arranged below the peripheral edge portion 2. It is supplied onto the transport trough 4 of the straight feeder 3 (supply device). The transport trough 4 is vibrated by the vibrating device 5 of the straight feeder 3, and the article to be weighed is transported forward by this vibration, and is dropped and stored in the plurality of weighing units 6 arranged below each transport trough 4.

Conventionally, in the transport trough 4 of the linear feeder 3 of this type, the surface of the bottom portion 7 that comes into contact with the article to be weighed is formed flat.
A side portion 8 having a flat rising inner surface is formed on both sides of the bottom portion 7.

The vibrating device 5 is supported on the middle plate 12 inside the housing 11 via four spring legs 10 attached to the lower surface of the base 9, and the electromagnet 13 is fixed to the upper surface of the base 9.
Further, leaf springs 14 and 15 arranged so as to be opposed to the front and rear of the base 9 and inclined upward by 20 degrees with respect to the vertical direction are attached by screwing the respective lower ends thereof. A vibrating plate 16 is horizontally attached to the upper ends of the leaf springs 14 and 15, and an iron piece 17 is placed at a position of the upper end of one of the leaf springs 14 and 15 facing the attracting surface of the electromagnet 13. Is installed. The transfer trough 4 is horizontally attached to the vibrating plate 16 of the vibrating device 5 configured as described above through the four columns 18.

When transporting the articles to be weighed on the transport trough 4, use an electromagnet.
By supplying an intermittent current to the electromagnet 13, the iron pieces 17 are intermittently attracted to the electromagnet 13 to vibrate the diaphragm 16 in the direction of arrow B in the figure. The transfer trough 4 vibrates in the direction of arrow B together with the vibration plate 16 so that the articles to be weighed can be transferred forward. When the conveyance of the article to be weighed is stopped, the conveyance of the article can be stopped by stopping the supply of the intermittent current to the electromagnet 13.

However, the transport trough 4 of this straight feeder 3 has a bottom portion 7
Since the upper surface of the is flat, for example, boiled beans,
When an article to be weighed containing a liquid with a relatively high viscosity such as pickled vegetables is conveyed, the article to be weighed remains on the transfer trough 4 and a predetermined amount cannot be supplied to the weighing unit 6. Occurs. As a means for solving such a problem, for example, there is an adhesion preventing device for articles to be weighed disclosed in Japanese Utility Model Laid-Open No. 58-27730. FIG. 5 is a diagram in which this adhesion preventing device is applied to the transfer trough 4 of the straight feeder 3, and the inner surface of the transfer trough 4 in contact with the articles to be weighed, that is, the bottom portion 7.
The corrugated plate 19 is detachably provided on the surface of the. At this time, the ridges 20 of the corrugated plate 19 are formed along the longitudinal direction of the transport trough 4. According to this corrugated plate 19, the moisture of the article to be weighed flows down through the grooves 21 formed between the ribs 20, and the solid content only slightly contacts the ribs 20. It is hard to attach to 19. Therefore, the linear feeder 3 can convey an article to be weighed having an adhesive property.

[Problems to be Solved by the Invention] However, since the above-described adhesion preventing device has a small contact area with the object to be weighed to make it slippery and hard to adhere, the object to be weighed absorbs vibration. In the case of easy-to-use broiler meat, porridge, bonito flakes, etc., there is a problem that the vibration cannot be carried because the vibration of the carrying trough 4 is absorbed in the vicinity of the contact portion of the article to be weighed with the projection 20. In addition, when the item to be weighed is fish, frozen food, or the like, the surface of the item is slippery, so that the top surface of the ridge portion 20 vibrates in the vertical direction, but this also poses a problem that it cannot be conveyed.

Further, in an extreme case where the surface of the ridge portion 20 is slippery, there is also a problem that an article to be weighed is collapsed so that an excessive amount of the article to be weighed is put into the weighing section 6.

The object of the present invention is to provide flexible and easy-to-absorb products such as broiler meat and porridge, products with a small surface friction coefficient, and products such as pickles that tend to adhere to the transport trough, compared to conventional feeders. Another object of the present invention is to provide a combination weighing feeder capable of controlling conveyance and stoppage of conveyance with high responsiveness.

[Means for Solving the Problems]

In order to achieve the above object, a supply device for a combination scale according to the present invention comprises a conveyance trough and a vibration device provided so as to convey an article on the conveyance trough by vibrating the conveyance trough. In the supply device for use, a plurality of sawtooth-shaped projections having a cross-sectional shape parallel to the transport direction are provided on the inner surface of the bottom portion of the transport trough that comes into contact with the article, and the front surface of the projections in the transport direction is in the transport direction. An edge formed on the boundary between the front surface and the rear surface forming the protrusion, which is formed at a right angle or a surface close to a right angle, the rear surface in the transport direction of the protrusion is formed as a slope that gently climbs with respect to the transport direction. And the vicinity of the article supports the article and locks the movement of the article in the direction opposite to the transport direction.

Further, in the supply device for combined weighing according to claim (1), the plurality of projections are formed with a constant width to form a row along the transport direction, and the row is provided in a plurality of rows. Can be one.

[Action]

When the feeding device of the present invention is activated, when the carrying trough moves in the carrying direction, the edges of the protrusions provided on the carrying trough and the articles supported on the vicinity thereof are formed at right angles or near-right angles. It is conveyed by being pushed in a direction of climbing the rear surface of the projection, which is formed with a gentle slope, from the state of being in contact with the front surface or the edge of the projection. When the transport trough moves in the direction opposite to the transport direction, the article is difficult to return to the rear because it comes into contact with the front surface of the protrusion or is caught by the edge of the protrusion. Therefore, the article can be efficiently conveyed forward. When the supply device is stopped, the article on the transport trough is in contact with the rear surface of the projection, which is formed with a gentle slope, so that the article transport can be reliably stopped.

〔Example〕

In this embodiment, the feeder of the present invention is applied to the straight feeder 3 of the distributed feeder shown in FIG.
The feeding device of the present invention is different from the conventional straight feeder 3 in that a large number of protrusions are provided in the portion of the conventional conveying trough 4 that comes into contact with the conveyed article, and the vibrating device 5 is equivalent to the conventional one. Is. Therefore, detailed description of the vibration device 5 is omitted. Hereinafter, a first embodiment of the transport trough used in the feeder will be described with reference to FIG.

As shown in FIG. 1A, the transport trough 23 has a U-shaped cross section perpendicular to the transport direction, and includes a bottom portion 7 and side portions 8 on both sides of the bottom portion 7. Then, three rod-shaped bodies 24 are attached to the upper surface of the bottom portion 7 in parallel with the carrying direction at predetermined intervals. This rod-shaped body 24 has a rectangular shape whose cross section perpendicular to the length direction is oblong, and a large number of saw-tooth-shaped projections 22 which are parallel to the length direction form a row along the length direction. Is formed. The front surface 25 of the projection 22 in the carrying direction is formed to be a surface close to a right angle to the carrying direction, and the rear surface 26 of the projection 22 in the carrying direction is formed to be a gentle slope.

Further, at the boundary between the front surface 25 and the rear surface 26 that form the protrusion 22, an edge that is orthogonal to the transport direction and extends in a substantially horizontal direction is formed.

When the linear feeder with the transport trough 23 attached is started, when the transport trough 23 moves in the transport direction, the articles supported on the edges of the protrusions 22 provided on the transport trough 23 and in the vicinity thereof are It is conveyed by being pushed in a direction of climbing the rear surface 26 of the projection 22 from the state of being in contact with the front surface 25 or the edge.
At this time, since the peripheral edge of the front surface 25 of the projection 22 is easily caught by the article, even a flexible article such as broiler meat or a slippery article such as fish can be reliably conveyed forward. Then, when the transport trough 23 moves in the direction opposite to the transport direction, the article comes into contact with the edge of the projection 22 and the front surface 25, and thus it is difficult to return to the rear. Therefore, the article can be efficiently conveyed forward. When the vibrating device 5 is stopped, the article on the transport trough 23 is in contact with the rear surface 26 of the projection 22, which is formed with a gentle slope, so that the forward movement of the article can be reliably stopped. it can.

However, although three rod-shaped bodies 24 of this embodiment are attached to the bottom portion 7 of the transfer trough 23, an appropriate number of rod-shaped bodies 24 are provided according to the shape and physical properties of the articles in order to ensure the transportation of the articles. The body 24 may be attached to the inner surface of the bottom portion 7 and the side portion 8 of the transport trough 23. And this rod
The cross-sectional shape perpendicular to the length direction of 24 is a horizontally long rectangle, but it may be a substantially square as shown in FIG. 1 (b) or a vertically long rectangle.

Further, as shown in FIG. 1 (c), the rod-shaped body 24 is a rod-shaped body 27 having a substantially semicircular cross-section in the lengthwise direction, and the central cross-sectional shape of the rod-shaped body 27 parallel to the lengthwise direction is the above-mentioned embodiment. A plurality of saw-tooth-shaped protrusions 22 similar to the above may be arranged in rows along the length direction.

Further, in the above-described embodiment, the rod-shaped body 24 having the multiple projections 22
The bottom 7 is attached to the bottom 7, but the bottom 7 can be pressed to form a large number of protrusions 22 on the bottom 7, and the bottom 7, the side portions 8 and the protrusions 22 can be integrally formed of plastic or the like. It can also be molded into.

The second embodiment is shown in FIG. 2 (a). This transport trough 28
Is formed by extending the width of the saw-toothed projection 22 shown in the first embodiment over the entire width of the bottom portion 7. According to the transport trough 28, the article to be transported can be reliably transported regardless of the position in the width direction of the transport trough 28.

The projection 29 of the transport trough 28 can be formed by pressing the bottom portion 7, or the bottom portion 7, the side portion 8 and the projection 22 can be integrally formed of plastic or the like. FIG. 2B shows a sectional view of the transfer trough 28 parallel to the transfer direction. Also,
The protrusion 29 may be machined separately from the bottom 7 or molded from plastic or the like. FIG. 2 (c) shows a sectional view in which the molded protrusion 29 is attached to the upper surface of the bottom portion 7.

A third embodiment is shown in FIG. Conveying trough of Fig. 3 (a)
A plurality of narrow projections 31 are vertically and horizontally aligned on the upper surface of the bottom portion 7 and provided in three columns. And this protrusion 31 is
The cross-sectional shape parallel to the transport direction has the same sawtooth shape regardless of the cross-section at any position. The transport trough 32 of FIG. 3 (b) has a large number of protrusions 33 aligned vertically and horizontally on the bottom 7 like the transport trough 30 of FIG.
The shape of the protrusion 33 is such that the front surface 25 is formed as an inclined surface that is close to a right angle, and the rear surface 26 is formed in an arc shape in which the cross-sectional shape that is perpendicular to the transport direction becomes smaller toward the rear side.

Incidentally, the projections 31 and 33 of the transfer troughs 30 and 32 are formed by pressing the bottom portion 7 as in the second embodiment, or the bottom portion 7, the side portion 8 and the projections 31 and (33) are integrally formed of plastic or the like. It can be molded. Alternatively, the protrusions 31, 33 may be machined or plastic molded separately from the bottom 7 and attached to the bottom 7. Further, in this embodiment, the protrusion 31,
33 are provided vertically in three rows, but they may be provided in rows other than three rows depending on the form and physical properties of the article to be conveyed, and in addition to this, projections 31 are formed on the entire inner surfaces of the bottom portion 7 and the side portions 8, (33) can be provided at a desired position.

[Effect of device]

As described above, according to the present invention, articles that cannot be conveyed by the conventional feeders, for example, articles that absorb vibration of the feeder because of its flexibility at the contact surface with the conveyor trough, and friction on the surface are used. Since the coefficient is small, an article slipping on the transport trough can be reliably transported with high responsiveness, and furthermore, the article can be stopped on the transport trough. In addition, articles such as pickles that tend to adhere to the surface of the transport trough can be relatively easily transported and stopped because the contact area with the trough is reduced by the large number of projections. Therefore, every minute depending on the weighing speed of the combination scale.
Since it is possible to control the transportation and stop of the articles as many as 60 times, it is possible to improve the weighing accuracy of the combination scale.

[Brief description of drawings]

FIGS. 1 (a), (b) and (c) are perspective views of a carrying tray and a rod-like body used in the first embodiment of the present invention, and FIGS. 2 (a), (b) and (c) are the same. A perspective view and a longitudinal sectional view of a carrying tray used in the second embodiment of the invention, FIG. 3 (a),
(B) is a partially cutaway perspective view of a carrying tray used in the third embodiment of the present invention, FIG. 4 is a partial sectional view of a conventional feeder used for a combination scale, and FIG. 5 is a conventional feeder. FIG. 3 is a partially cutaway perspective view of a carrying tray used in FIG. 5 ... Vibration device, 22, 29, 31, 33 ... Protrusion, 23, 28, 3
0, 32 …… Transfer trough, 25 …… Front surface of protrusion, 26 …… Rear surface of protrusion.

Claims (2)

[Scope of utility model registration request] 1. A combination balance supply device comprising: a transport trough; and a vibrating device provided to convey an article on the transport trough by vibrating the transport trough, wherein the transport trough is in contact with the article. The inner surface of the bottom of the projection is provided with a large number of sawtooth-shaped projections having a cross-sectional shape parallel to the carrying direction, and the front surface of the projections in the carrying direction is formed at a right angle or near a right angle with respect to the carrying direction. A rear surface in the transport direction is formed on a slope that is gently climbing with respect to the transport direction, and the article is supported by an edge formed at a boundary between the front surface and the rear surface forming the protrusion and a portion in the vicinity thereof, and A combination weighing feeder, characterized in that the movement of the article in the direction opposite to the conveying direction is locked. 2. The combination weighing feeder according to claim 1, wherein the plurality of projections are formed in a constant width to form a row along the carrying direction, and the row is provided in plural rows. A supply device for a combination scale which is characterized by being provided.