JP-7856509-B2 - Sheet supply device

JP7856509B2JP 7856509 B2JP7856509 B2JP 7856509B2JP-7856509-B2

Inventors

吉村健
門山茂則
大島久典
千葉茂美

Assignees

株式会社アイホー

Dates

Publication Date: 20260511
Application Date: 20220630

Claims (9)

In a sheet supply device that lays a sheet in close contact with the inside of a container that opens on one side, A pressing portion is inserted into the opening of the container and pushes the sheet into the container, The first unit and the second unit are positioned opposite each other, with the container and the pressing portion in between, and hold the sheet between the container and the pressing portion. It has, The first unit and the second unit are, respectively, It has a plurality of sheet-holding parts that are arranged at predetermined intervals in the planar direction and hold the sheet in a planar shape, By narrowing the spacing between the plurality of sheet-holding parts that hold the sheet in a planar shape in a direction intersecting the direction of separation between the first unit and the second unit, slack is formed in the sheet. A sheet supply device characterized by the following features.
In a sheet supply device that lays a sheet in close contact with the inside of a container that opens on one side, A pressing portion is inserted into the opening of the container and pushes the sheet into the container, The first unit and the second unit are positioned opposite each other with respect to the container, and hold the sheet between the container and the pressing portion, It has, The first unit and the second unit are, respectively, It has a plurality of sheet-holding parts that are arranged at predetermined intervals in the planar direction and hold the sheet in a planar shape, By narrowing the spacing between the plurality of sheet-holding parts that hold the sheet in a planar shape in a direction intersecting the direction of separation between the first unit and the second unit, slack is formed in the sheet. The plurality of sheet-holding portions of the first unit include a first fixed sheet-holding portion which is arranged so as not to move, and a first movable sheet-holding portion and a second movable sheet-holding portion which are arranged on both sides of the first fixed sheet-holding portion along the container and are movable in a planar direction toward the first fixed sheet-holding portion. The plurality of sheet-holding portions of the second unit include a second fixed sheet-holding portion which is positioned immovably, and a third movable sheet-holding portion and a fourth movable sheet-holding portion which are positioned on both sides of the second fixed sheet-holding portion along the container and are movable in a planar direction toward the second fixed sheet-holding portion. A sheet supply device characterized by the following features.
In the sheet supply device according to claim 1 or claim 2 , The plurality of sheet-holding portions of the first unit and the plurality of sheet-holding portions of the second unit hold one side of the sheet. A sheet supply device characterized by the following features.
In the sheet supply device according to claim 1 or claim 2, The container has a rectangular parallelepiped shape, The first sheet-holding portion and the second sheet-holding portion included in the plurality of sheet-holding portions of the first unit, and the third sheet-holding portion and the fourth sheet-holding portion included in the plurality of sheet-holding portions of the second unit, are each positioned at locations corresponding to the corners of the container and hold the sheet in a planar manner. A sheet supply device characterized by the following features.
In the sheet supply device according to claim 1 or claim 2, The container has a rectangular parallelepiped shape with a pair of long sides and a pair of short sides. The plurality of sheet-holding portions of the first unit are arranged on the side of one of the shorter sides, and the spacing between them is narrowed along the direction of the shorter side. The plurality of sheet-holding portions of the second unit are arranged on the side of the other short side, and the spacing between them is narrowed along the direction of the short side. A sheet supply device characterized by the following features.
In a sheet supply device that lays a sheet inside a container that opens on one side, The sheet is wound into a roll, and a sheet roll is positioned on one side of the sheet, A pull-out section for pulling the sheet from the sheet roll to above the opening of the container, A plurality of sheet-holding sections are arranged above the aforementioned drawer section and hold the sheet that has been pulled out by the drawer section, A cutting unit that cuts the sheet held by the plurality of sheet holding units at a position between the container and the sheet roll, Having, A sheet supply device characterized by the following features.
In the sheet supply device described in claim 6, The plurality of sheet-holding parts hold the upper surface of the sheet by adsorption, It has a pressing portion that is inserted into the opening of the container and pushes the sheet held by the plurality of sheet holding portions into the container, The sheet detaches from the plurality of sheet-holding portions in accordance with the tension acting on the sheet when the push-in portion is inserted into the container. A sheet supply device characterized by the following features.
In the sheet supply device according to claim 6 or claim 7, The plurality of sheet-holding parts are Bernoulli chucks that hold the sheet by adsorption by forming a vacuum region between them and the sheet. A sheet supply device characterized by the following features.
In a sheet supply device that lays a sheet inside a container that opens on one side, The sheet is wound into a roll, and a sheet roll is positioned on one side of the sheet, A pull-out section for pulling the sheet from the sheet roll to above the opening of the container, A plurality of sheet-holding sections are arranged above the aforementioned drawer section and hold the sheet that has been pulled out by the drawer section, A cutting unit that cuts the sheet held by the plurality of sheet holding units at a position between the container and the sheet roll, It has a pressing portion that is inserted into the opening of the container and pushes the sheet held by the plurality of sheet holding portions into the container, The pull-out section has a pair of chucks that can reciprocate linearly between a retracted position and a forward position, the retracted position being a position on the sheet roll side of the container or the push-in section where the pair of chucks grip the sheet, and the forward position being a position on the opposite side of the sheet roll from the container or the push-in section where the pair of chucks release the sheet. The pair of chucks release the sheet and retract from the forward position to the retracted position after the plurality of sheet-holding portions have held the sheet and before the pushing portion is inserted into the container. A sheet supply device characterized by the following features.

Description

This invention relates to a sheet supply device for laying a sheet inside a container that opens on one side. For example, in school lunch and bento box manufacturing plants, cooked rice is stored in containers with a sheet in between. This is because if the rice were placed directly into the container, it would stick to the inner walls, making cleaning difficult. Furthermore, if there are scratches on the inner walls of the container, bacteria can breed in those areas, preventing hygienic storage of the rice. Various devices have been proposed to line the inside of containers that open on one side with a sheet. For example, Patent Document 1 discloses a device in which, after a gripping means pulls a sheet from a sheet roll above the container, a retaining clip suspended from a chain is placed on the pulled-out sheet with the chain slackened. Then, by simultaneously cutting the sheet and releasing the gripping means, the retaining clip is lowered by the amount of the chain slack, pushing the sheet into the inside of the container. For example, Patent Document 2 discloses a device in which a pull-out arm suctions the end of a sheet roll to pull out a predetermined length of sheet, a retaining member grips the rear end of the sheet, the sheet is cut, the pull-out arm then moves to place the cut sheet on top of a container, the sheet is released, and then a suction cup is lowered over the sheet placed on the container to lay the sheet inside the container. Japanese Patent Application Publication No. 8-164920Japanese Patent Application Publication No. 3-176322 This is a schematic diagram of the sheet supply device as seen from the front.This is a cross-sectional view of the sheet supply device shown in Figure 1, taken along the line A-A.This is a diagram showing an example of a food container.This is a schematic diagram showing an example of a push-in frame.This is a schematic diagram showing the top view of the first and second units.This is a schematic diagram showing the top view of the first and second units.This is a diagram illustrating the processing procedure of the sheet supply device.This is a diagram illustrating the operation of the sheet supply device.This is a diagram illustrating the operation of the sheet supply device.This is a diagram illustrating the operation of the sheet supply device.This is a diagram illustrating the operation of the sheet supply device.This is a diagram illustrating the operation of the sheet supply device.This is a diagram illustrating the operation of the sheet supply device.This is a diagram illustrating the operation of the sheet supply device.This figure shows modified examples of multiple sheet-holding sections.This figure shows modified examples of multiple sheet-holding sections. The sheet supply device of this embodiment will be described in detail below with reference to the attached drawings. This specification discloses a sheet supply device for laying a sheet inside a container filled with cooked rice. Figure 1 is a schematic diagram of the sheet supply device 1 in a front view. Figure 2 is a cross-sectional view taken along line A-A in Figure 1. The arrows in the figures indicate the orientation relative to the sheet supply device 1 (up/down, front/back, left/right). The sheet supply device 1 is configured such that, with a sheet 3a placed between the container 2 and the pressing frame 4, the container 2 is lifted relative to the pressing frame 4, causing the pressing frame 4 to press the sheet 3a into the container 2, thereby laying the sheet 3a tightly against the inside of the container 2. In this embodiment, the pressing frame 4 is an example of a pressing section. In this embodiment, the container 2 is an example of a container. Figure 3 is an external perspective view showing an example of a food container 2. Figure 3(a) shows the state before the cooked rice R is wrapped in the sheet 3a, and Figure 3(b) shows the state after the cooked rice R is wrapped in the sheet 3a. In this embodiment, the food container 2 has a rectangular bottom 2e (see Figures 1 and 2), and a pair of long side surfaces 2a, 2b and a pair of short side surfaces 2c, 2d are arranged opposite each other along the outer edge. As shown in Figure 3(a), the sheet supply device 1 lays the sheet 3a in the food container 2 with margins 3aa, 3ab in the parts corresponding to the pair of long side surfaces 2a, 2b and margins 3ac, 3ad in the parts corresponding to the pair of short side surfaces 2c, 2d. The margins 3aa, 3ab, 3ac, 3ad refer to the parts of the sheet 3a laid in the food container 2 that are located outside the opening end of the food container 2. As shown in Figure 3(b), the margins 3aa, 3ab, 3ac, and 3ad are used to wrap the cooked rice R. As shown in Figures 1 and 2, the sheet supply device 1 comprises a conveyor 11, a push-in frame 4, a pull-out section 5, a first unit 6, a second unit 7, and a lifter 9. As shown in Figure 1, the conveyor 11 has a pair of conveyor belts 14