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EP-4417945-B1 - COMBINATION WEIGHING APPARATUS

EP4417945B1EP 4417945 B1EP4417945 B1EP 4417945B1EP-4417945-B1

Inventors

  • KAGEYAMA, TOSHIHARU

Dates

Publication Date
20260513
Application Date
20240212

Claims (3)

  1. A combination weighing apparatus (1) comprising: a first vibrator (11) that generates vibrations; a second vibrator (12) that generates vibrations; an article supplier (13) that has an outlet allowing articles supplied from outside to be discharged and conveys the articles in response to the vibrations from the first vibrator (11); a distribution table (14) circular in plan view that discharges, in response to the vibrations from the second vibrator (12), the articles supplied from the article supplier (13) in a radial direction while spiraling the articles in a circumferential direction; a wall (15) arc-shaped that is attached to a first circumferential edge (141) located downstream of the article supplier (13) and prevents discharge of the articles from the first circumferential edge (141), the first circumferential edge (141) being part of a circumferential edge of the distribution table (14); a plurality of feeding troughs (16) arrayed fanwise along a second circumferential edge (142) that is part of the circumferential edge of the distribution table (14) and is out of the first circumferential edge (141); and characterized by : a controller (17) that controls the vibrations of the first vibrator (11) and the vibrations of the second vibrator (12) such that a discharge direction (D1) in which the articles are discharged from the article supplier (13) to the first circumferential edge (141) and a conveyance direction (D2) of the articles on the distribution table (14) corresponding to the first circumferential edge (141) are mutually inverse and an aggregate of the articles is formed at the first circumferential edge (141).
  2. The combination weighing apparatus (1) according to claim 1, further comprising a first combination weighing mechanism (1A) and a second combination weighing mechanism (1B) adjacent to each other, wherein the distribution table (14) includes a first distribution table (14) and a second distribution table (14) that the first combination weighing mechanism (1A) and the second combination weighing mechanism (1B) include, respectively, the first distribution table (14) and the second distribution table (14) being independent from each other, and a rotational direction of the first distribution table (14) and a rotational direction of the second distribution table (14) are identical to each other.
  3. The combination weighing apparatus (1) according to claim 2, wherein the article supplier (13) is asymmetric about a second straight line that passes through a center of a first straight line connecting a center (C1) of the first distribution table (14) and a center (C2) of the second distribution table (14) and is orthogonal to the first straight line.

Description

TECHNICAL FIELD The present invention relates to a combination weighing apparatus. BACKGROUND ART Conventionally, known has been an article supply method with a combination of a supply apparatus (cross feeder), a sorter, one or two supply feeders, and a distribution table. The supply apparatus supplies a combination weighing apparatus with articles supplied from the upstream side. The sorter is located downstream of the supply apparatus and sorts articles to each channel (combination weighing mechanism). Downstream of the sorter, the one or two supply feeders are provided at a machinery center, and the distribution table has a partial region prescribed as a non-discharge region. CITATION LIST Patent Literature Patent Literature 1: JP 5993722 B2Patent Literature 2: JP 5095477 B2Patent Literature 3: JP 5314506 B2WO 2016/143709 A1 discloses a combination weighing apparatus comprising a linearly vibrating trough for transporting articles to a dispersion table. A dispersion table vibration unit rotates the dispersion table in the circumferential direction so that the articles on the dispersion table move radially outward while swirling in one direction. SUMMARY OF THE INVENTION However, according to the article supply method described above, as a disadvantage, the amount of supply of articles varies between feeding troughs provided along the circumferential edge of the distribution table. Thus, the present invention has been made in consideration of the above problem, and an object of the present invention is to provide a combination weighing apparatus enabling uniform supply of articles between feeding troughs. A combination weighing and counting apparatus according to an embodiment is summarized as including a first vibrator that generates vibrations; a second vibrator that generates vibrations; an article supplier that has an outlet allowing articles supplied from outside to be discharged and conveys the articles in response to the vibrations from the first vibrator; a distribution table circular in plan view that discharges, in response to the vibrations from the second vibrator, the articles supplied from the article supplier in a radial direction while spiraling the articles in a circumferential direction; a wall arc-shaped that is attached to a first circumferential edge located downstream of the article supplier and prevents discharge of the articles from the first circumferential edge, the first circumferential edge being part of a circumferential edge of the distribution table; a plurality of feeding troughs arrayed fanwise along a second circumferential edge that is part of the circumferential edge of the distribution table and is out of the first circumferential edge; and a controller that controls the vibrations of the first vibrator and the vibrations of the second vibrator such that a discharge direction in which the articles are discharged from the article supplier to the first circumferential edge and a conveyance direction of the articles on the distribution table corresponding to the first circumferential edge are mutually inverse and an aggregate of the articles is formed at the first circumferential edge. According to the present invention, it is possible to provide a combination weighing apparatus enabling uniform supply of articles between feeding troughs. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view for an exemplary entire configuration of a combination weighing apparatus according to an embodiment;FIG. 2 is a top view of FIG. 1; andFIG. 3 is an explanatory view for an exemplary effect of the combination weighing apparatus according to the embodiment. DESCRIPTION OF EMBODIMENTS Hereinafter, the present embodiment will be described in detail with reference to the attached drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference symbols. However, note that the drawings are schematic, and ratios of dimensions are different from actual ones. Therefore, specific dimensions and the like are determined in consideration of the following description. Moreover, there may be portions where dimensional relationships or proportions are different among the drawings. In this specification and the drawings, elements having substantially the same function and configuration are denoted by the same reference numerals to omit redundant description, and elements not directly related to the present invention are omitted. First Embodiment A combination weighing apparatus 1 of a first embodiment of the present invention will be described below with reference to FIGS. 1 to 3. As illustrated in FIGS. 1 and 2, the combination weighing apparatus 1 according to the present embodiment includes a first combination weighing mechanism 1A and a second combination weighing mechanism 1B adjacent to each other. In the present embodiment, an exemplary combination weighing apparatus 1 including two adjacent combination weighing mechanisms