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CN-122029408-A - Metering device

CN122029408ACN 122029408 ACN122029408 ACN 122029408ACN-122029408-A

Abstract

The invention provides a technology capable of shortening the time required for metering while realizing high metering precision. The weighing device (1) comprises a load part (3) for transmitting load to the load cell (2), and a suspension (5) connected with a weighing container (4) for inputting the weighing object, and an upper sleeve-type member (61) and a lower sleeve-type member (62) which are elastic bodies are arranged at the connection parts of the suspension (5) and the load part (3) and the weighing container (4) and the suspension (5), so that impact load can be relaxed, and vibration can be quickly attenuated.

Inventors

  • NISHIMURA KAZUHIRO
  • Yamamoto Oki

Assignees

  • 株式会社佐竹

Dates

Publication Date
20260512
Application Date
20241029
Priority Date
20231122

Claims (6)

  1. 1. A metering device, wherein, The metering device comprises: a load cell; A load unit for transmitting a load to the load cell; a measuring container which can accommodate a measuring object; a suspension member suspending the weighing container from the load part; A first upper buffer part which is an elastic body attached to at least one of the load part and the suspension; a second upper buffer portion that is an elastic body arranged in a first direction with the first upper buffer portion; an upper fastening portion fastening the first upper buffer portion and the second upper buffer portion in the first direction; a first lower buffer part which is an elastic body mounted on at least one of the weighing container and the suspension; A second lower buffer portion which is an elastic body arranged in a second direction different from the first direction and is arranged with the first lower buffer portion, and A lower fastening portion fastening the first lower buffer portion and the second lower buffer portion in the second direction; one of the load portion and the suspension is coupled to the other by being sandwiched between the first upper buffer portion and the second upper buffer portion, One of the weighing container and the suspension is connected to the other by being sandwiched between the first lower buffer portion and the second lower buffer portion.
  2. 2. The metering device of claim 1, wherein, The weighing apparatus includes an upper sleeve-shaped member having an upper cylindrical portion including the second upper buffer portion, and an upper flange portion as the first upper buffer portion that extends radially outward at one end of the upper cylindrical portion, and the upper sleeve-shaped member is arranged such that a height direction of the upper cylindrical portion is parallel to the first direction, The upper fastening part is provided with an upper bolt inserted into the upper cylinder part and an upper nut embedded with the upper bolt, The upper fastening portion fastens the upper cylindrical portion and the upper flange portion in the first direction by screwing the upper bolt into the upper nut, The upper cylindrical portion bulges radially outward by the fastening of the upper fastening portion, One of the load portion and the suspension is coupled to the other by being sandwiched between the bulging portion of the upper cylindrical portion and the upper flange portion.
  3. 3. The metering device according to claim 2, wherein, The first direction is a vertical direction, The load loading part is formed with a load hole in the vertical direction, The suspension is disposed below the load part and has a horizontal portion extending in a horizontal direction and a vertical portion extending downward in a vertical direction from the horizontal portion, The horizontal portion is formed with an upper side coupling hole in a vertical direction, The upper sleeve-type member is arranged such that the upper flange portion is located between the load portion and the horizontal portion, and the upper cylindrical portion penetrates the horizontal portion in an upper coupling hole, The upper bolt has an upper shaft portion inserted into the upper sleeve member through the load hole, and an upper head portion having a larger diameter than the load hole of the load portion and disposed above the load portion; the upper fastening portion fastens the upper cylindrical portion and the upper flange portion in a vertical direction by screwing the upper shaft portion into the upper nut, The horizontal portion is sandwiched between the bulging portion of the upper cylindrical portion and the upper flange portion around the upper connecting hole.
  4. 4. A weighing apparatus comprising a load cell, a load portion for transmitting a load to the load cell, a weighing container for accommodating an object to be weighed, and a suspension for suspending the weighing container from the load portion, The suspension is formed with a lower side coupling hole in a horizontal direction, The metering container is formed with a container hole in a horizontal direction, The metering device further comprises: The lower sleeve-type member has a lower cylindrical portion which is an elastic body disposed so as to penetrate the measuring container through the container hole, a lower flange portion which is expanded radially outward at one end of the lower cylindrical portion and is located between the measuring container and the hanger, and A lower fastening part having a lower bolt inserted into the lower cylindrical part and a lower nut fitted with the lower bolt; The lower bolt has a lower shaft portion inserted into the lower sleeve member through the lower coupling hole, and a lower head portion having a larger diameter than the lower coupling hole and disposed on a side opposite to the lower flange portion with the hanger interposed therebetween; The lower fastening portion fastens the lower cylindrical portion and the lower flange portion in a horizontal direction by screwing the lower shaft portion into the lower nut, The lower cylindrical portion bulges radially outward by the fastening of the lower fastening portion, The measuring container is coupled to the hanger by being sandwiched between the bulging portion of the lower cylindrical portion and the lower flange portion around the container hole.
  5. 5. The metering device of claim 1, wherein, The second direction is perpendicular to the first direction.
  6. 6. The metering device of claim 5, wherein, The first direction or the second direction is a vertical direction.

Description

Metering device Technical Field The present invention relates to a weighing apparatus for measuring the weight of an object. Background Conventionally, in order to separate a powdery or granular object by a certain amount or to measure a flow rate of the object between steps, a weighing apparatus has been used which includes a load cell, a weighing container, a load unit for transmitting a load to the load cell, and a hanger for suspending the weighing container from the load unit. In the weighing apparatus, an object is dropped and put into a weighing container, and a load applied to the weighing container is measured by a load cell. If the load portion and the weighing container are completely fixed, there is a risk that the device will fail due to an impact load generated when the object is put in. In order to alleviate the impact load, a method has been proposed in which a predetermined amount of swing can be performed between the load portion and the weighing container. On the other hand, since a large swing affects the measurement result, it is required to quickly converge the swing in order to achieve both the measurement accuracy and the reduction in the time required for the measurement. For example, patent document 1 proposes a suspension having a ball bearing. The suspension includes a first member attached to the shaft-like load-carrying portion, and a second member attached to the first member and fixed to the weighing container. The first member has a first hole and a second hole in which ball bearings are fitted, respectively. The first member is rotatably mounted on the load-carrying portion by inserting the load-carrying portion into the ball bearing of the first bore. The second member is rotatably mounted on the first member by inserting a rotation shaft provided at one end of the second member into a ball bearing of a second hole of the first member. The load-carrying portion and the first hole have axes in a horizontal direction, and the second hole has axes in a horizontal direction and perpendicular to the first hole. The other end of the second member is fixed to the weighing container by a bolt. According to patent document 1, the following effects are obtained. The first member is swingable around the axis of the load portion, and the second member fixed to the weighing container is swingable around the axis perpendicular to the axis of the load portion with respect to the first member, so that the swinging due to the impact is quickly converged by the self weights of the weighing container and the object, and the first member and the second member are quickly returned to the position where the weighing container is at the lowest point by the respective ball bearings of low friction. This can improve the accuracy of measurement and also can measure the measurement in a short time. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2013-108825 Disclosure of Invention Problems to be solved by the invention In the prior art, the requirement of rapid convergence of vibration of a metering container and metering with high precision cannot be fully satisfied. The present invention aims to provide a technique capable of shortening the time required for metering while realizing high metering accuracy. Solution to the problem In order to solve the above problems, the present invention provides the following metering container. The weighing container according to the first aspect of the invention includes a load cell, a load portion for transmitting a load to the load cell, a weighing container for accommodating an object to be weighed, a hanger for suspending the weighing container from the load portion, a first upper buffer portion which is an elastic body attached to at least one of the load portion and the hanger, a second upper buffer portion which is an elastic body arranged in a first direction with the first upper buffer portion, an upper fastening portion for fastening the first upper buffer portion and the second upper buffer portion in the first direction, a first lower buffer portion which is an elastic body attached to at least one of the weighing container and the hanger, a second lower buffer portion which is an elastic body arranged in a second direction different from the first direction with the first lower buffer portion, and a lower fastening portion for fastening the first lower buffer portion and the second upper buffer portion in the second direction, wherein the first lower buffer portion and the second lower buffer portion are connected to the other one of the first lower buffer portion and the second lower buffer portion via the first hanger or the other of the first lower buffer portion and the hanger. The weighing container according to the second aspect of the invention includes a load cell, a load portion for transmitting a load to the load cell, a weighing container capable of accommodating an object to be weighed