JP6819850B2 - Sheet paper lifting device and sheet sheet lifting method - Google Patents

Description

The present invention relates to a sheet paper lifting device and a method for lifting sheet paper, which lifts an upper layer of sheet paper among a plurality of sheets of paper deposited in a laminated state.

Various types of devices have been conventionally used as a device for separating the upper layer of sheet paper from a plurality of sheet papers deposited in a laminated state. Here, when separating the upper layer of sheet paper from the plurality of sheet papers deposited in the laminated state, the plurality of sheets of paper are separated together in a state where the upper layer sheets of paper are overlapped by static electricity or the like. In order to prevent this, various measures have been taken so far. For example, in Patent Document 1, an air supply unit is provided on the side of a plurality of sheets of paper stacked in a laminated state, and the air supply unit provides a side edge of the upper layer of the sheet and a side edge below the air supply unit. A paper feeding device is disclosed that separates an upper layer of sheet paper from a sheet of paper below it by injecting air between the sheet and the sheet. Further, in the paper feeding device disclosed in Patent Document 1, the position of the upper layer sheet paper and the separated state of the upper layer sheet paper are detected by an optical sensor, and the upper layer sheet paper is based on the detection result. The air supply unit is moved to the height level.

Further, in Patent Document 2, a fan as an air supply unit is provided above a plurality of sheets of paper deposited in a laminated state, and a plurality of sheets in which air passages sent from the fans are deposited in a laminated state. A paper feeding device such as that formed on the side of a paper sheet is disclosed. In the paper feeding device disclosed in Patent Document 2, the air sent from the fan is ejected to the entire side edge of the plurality of sheets of paper deposited in the laminated state, whereby the upper layer is formed. The sheet paper can be separated from the sheet sheet below it.

JP-A-2009-203049 Japanese Unexamined Patent Publication No. 2005-8380

In the paper feeding device disclosed in Patent Document 1 and Patent Document 2, since the air supply unit and the air passage are provided on the side of the plurality of sheet sheets deposited in the laminated state, the sheet sheets are accumulated. There is a problem that a large space must be secured on the side of the sheet paper receiving part. Further, in the paper feeding device disclosed in Patent Document 1, the position of the upper layer sheet paper and the separated state of the upper layer sheet paper are detected by an optical sensor, and the upper layer sheet paper is based on the detection result. Since the air supply unit is moved to the height level, when feeding sheet paper continuously, the position of the air supply unit is adjusted according to the height of the upper layer sheet paper. There is a problem that a mechanism is needed. Further, in the paper feed device disclosed in Patent Document 1 and Patent Document 2, the sheet paper is fed in the horizontal direction, and it is not necessary to position the fed sheet sheet. When air is sprayed onto the side edge edges of a plurality of sheets of paper that are deposited in a laminated state, the positions of the sheets may shift in the horizontal direction.

The present invention has been made in consideration of such a point, and among a plurality of sheets of paper deposited in a laminated state on the sheet-sheet receiving portion, the upper layer of the sheet-fed paper is separated from the sheet-sheet below. A sheet paper lifting device and sheet paper that can be separated and do not require a space for arranging a gas supply unit, a gas passage, etc. on the side of the sheet paper receiving part on which the sheet paper is deposited. The purpose is to provide a lifting method .

The sheet-fed paper lifting device of the present invention is a sheet-fed paper lifting device that lifts an upper layer of a plurality of sheet-fed papers deposited in a laminated state, and a plurality of sheet-fed papers are internally laminated. The sheet-fed paper receiving part to be deposited, the adsorbing part for adsorbing the upper layer of the sheet-fed paper among the plurality of sheet-fed papers deposited in the laminated state on the sheet-sheet receiving part, and the sheet-fed paper receiving part. A support portion that supports the suction portion and a gas supply portion for supplying gas to the inside of the sheet paper receiving portion via the support portion are provided. An enclosure member is provided on the upper part of the side wall of the sheet paper receiving portion , and an opening for receiving the support portion is formed between the enclosure members . When the support portion closes the opening, the sheet paper A closed space is formed inside the receiving portion, and the gas supplied from the gas supply portion to the inside of the sheet paper receiving portion is ejected sideways in a state where the supporting portion closes the opening, and the sheet paper is ejected sideways. It is characterized in that the gas ejected laterally inside the receiving portion flows downward along the inner surface of the enclosure member, so that the gas flows in the closed space .

According to such a sheet paper lifting device, a gas supply unit for supplying gas to the inside of the sheet paper receiving portion via the support portion is provided, and the sheet paper receiving portion has a support portion. When the gas supplied from the gas supply section is received by the opening of the sheet paper receiving section, the gas is convected inside the sheet sheet receiving section, so that it is laminated on the sheet sheet receiving section. Of the multiple sheets of paper deposited in, the upper layer of sheets can be separated from the sheets below it, and the gas supply unit is on the side of the sheet paper receiving part where the sheets are deposited. Space for arranging paper and gas passages is not required.

In the sheet-sheet lifting device of the present invention, the sheet-sheet receiving portion is convected in the closed space of the sheet-sheet receiving portion when the support portion is received by the opening of the sheet-sheet receiving portion. The gas may be shaped so as to be sent to the side edge edges of a plurality of sheets of paper that are deposited in a laminated state on the sheet-sheet receiving portion.

In the sheet-fed paper lifting device of the present invention, the gas supplied from the gas supply unit is deposited along the upper surface of the upper layer of the sheet-fed paper among the plurality of sheet-fed papers laminated on the sheet-sheet receiving unit. It may further be provided with a Bernoulli chuck or a Bernoulli vacuum gripper that sucks the upper layer of sheet paper by generating a negative pressure with the upper layer of sheet paper by ejecting the paper.

In this case, a plurality of Bernoulli chucks or Bernoulli vacuum grippers may be provided on the support portion so as to be symmetrical with respect to the suction portion.

In the sheet paper lifting device of the present invention, the gas supplied by the gas supply unit is directed toward the upper layer of the sheet paper among the plurality of sheet sheets deposited in the laminated state on the sheet sheet receiving unit. It is designed to be ejected downward, and the support portion may be provided with a guide portion that changes the direction of the gas ejected downward to the side.

In the sheet-sheet lifting device of the present invention, the sheet-sheet receiving portion is provided with a positioning portion for positioning the side edge edges of a plurality of sheet-sheets deposited in a laminated state on the sheet-sheet receiving portion. It may have been.

In this case, the positioning portion may have a plurality of positioning pins extending upward from the inner bottom surface of the sheet paper receiving portion.

In the sheet-fed paper lifting device of the present invention, the sheet-fed paper is provided with the gas supplied from the gas supply unit when the support portion is received by the opening of the sheet-fed paper receiving portion. A relief portion may be provided to allow escape from the inside of the receiving portion to the outside.

In the sheet-fed paper lifting device of the present invention, the support portion is provided between the support portion and the sheet-fed paper receiving portion when the support portion is received by the opening of the sheet-fed paper receiving portion. A sealing portion for sealing the gap may be provided.
The method for lifting a sheet of paper of the present invention comprises a sheet-fed paper receiving portion in which a plurality of sheet-fed papers are laminated in a laminated state and a plurality of sheet-fed papers deposited in a laminated state in the sheet-fed paper receiving portion. Of these, a suction portion for adsorbing the upper layer of sheet paper and a support portion that can advance and retreat to the sheet sheet receiving portion, and a support portion that supports the suction portion, and the sheet sheet via the support portion. A gas supply unit for supplying gas to the inside of the paper receiving portion is provided, and an enclosure member is provided on the upper portion of the side wall of the sheet paper receiving portion, and the support portion is placed between the enclosure members. A method for lifting sheet paper by a sheet paper lifting device in which an opening for receiving is formed and a closed space is formed inside the sheet paper receiving portion when the support portion closes the opening. The step of closing the opening with the support portion by advancing the paper to the sheet paper receiving portion, and from the gas supply portion to the inside of the sheet paper receiving portion with the support portion closing the opening. The supplied gas includes a step of ejecting laterally, and the gas ejected laterally inside the sheet paper receiving portion flows downward along the inner surface of the surrounding member, so that the gas is ejected in the enclosed space. It is characterized by convection.

According to the sheet-fed paper lifting device and the sheet-fed paper lifting method of the present invention, the upper-layer sheet-fed paper among a plurality of sheet-fed papers deposited in a laminated state on the sheet-fed paper receiving portion is separated from the sheet-fed paper below. It can be separated, and there is no need for a space for arranging a gas supply unit, a gas passage, or the like on the side of the sheet paper receiving unit on which the sheet paper is deposited.

It is a side view which shows typically the structure of the sheet paper lifting apparatus by embodiment of this invention. It is a bottom view which shows the structure when the support part of the sheet paper lifting apparatus shown in FIG. 1 is seen from the lower side. It is a top view which shows the structure when the sheet paper receiving part of the sheet paper lifting apparatus shown in FIG. 1 is seen from the upper side. It is a side view which shows the operation of lifting a sheet paper by the sheet paper lifting device shown in FIG. It is a side view which shows the operation of lifting a sheet paper by the sheet paper lifting device shown in FIG. 1 following the state shown in FIG. It is a side view which shows the operation of lifting a sheet paper by the sheet paper lifting device shown in FIG. 1 following the state shown in FIG. It is a side view which shows the operation of lifting a sheet paper by the sheet paper lifting device shown in FIG. 1 following the state shown in FIG. It is a side view which shows roughly the structure of the sheet paper lifting apparatus which concerns on a modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 8 are diagrams showing a sheet-fed paper lifting device according to the present embodiment. Of these, FIG. 1 is a side view schematically showing the configuration of the sheet-fed paper lifting device according to the present embodiment, and FIG. 2 is a view of the support portion of the sheet-fed paper lifting device shown in FIG. 1 from below. It is a bottom view which shows the structure at the time, and FIG. 3 is a top view which shows the structure when the sheet paper receiving part of the sheet paper lifting apparatus shown in FIG. 1 is seen from the upper side. 4 to 7 are side views showing the operation of lifting the sheet by the sheet-sheet lifting device shown in FIG. 1 in order. Further, FIG. 8 is a side view schematically showing the configuration of the sheet-fed paper lifting device according to the modified example. In addition, in FIGS. 1 to 8, the sheet paper to be lifted by the sheet paper lifting device according to this embodiment is indicated by reference numeral W. Further, in FIGS. 5 and 6, the flow of air convected inside the sheet paper receiving portion is indicated by a white arrow.

The sheet-fed paper lifting device 10 according to the present embodiment lifts the upper layer of the sheet-fed paper among the plurality of sheet-fed papers deposited in the laminated state. As shown in FIGS. 1 to 3, the sheet-fed paper lifting device 10 according to the present embodiment is provided on the sheet-fed paper receiving portion 40 and the sheet-fed paper receiving portion 40 in which a plurality of sheets are stacked in a laminated state. On the other hand, the support portion 12 that can move forward and backward in the vertical direction in FIG. 1 and a plurality of sheet papers provided at the center position on the bottom surface of the support portion 12 and deposited on the sheet paper receiving portion 40 in a laminated state. A plurality of sheets are provided at positions on both sides of the suction pad 14 for sucking the upper layer of sheet paper and the suction pad 14 on the bottom surface of the support portion 12, and are deposited in a laminated state on the sheet paper receiving portion 40. It is provided with two non-contact suction pads 16 for sucking the upper layer of paper, and an air supply unit 24 for supplying air to the inside of the sheet paper receiving portion 40 via the support portion 12. .. Further, an opening 40a for receiving the support portion 12 is provided in the upper part of the sheet paper receiving portion 40, and the sheet paper receiving portion 40 is an air supply unit when the support portion 12 is received by the opening 40a. The shape is such that the air supplied from 24 convects inside the sheet paper receiving portion 40. More specifically, as shown in FIG. 5, the sheet-fed paper receiving portion 40 is convected inside the sheet-fed paper receiving portion 40 when the supporting portion 12 is received by the opening 40a of the sheet-fed paper receiving portion 40. The shape is such that the air to be collected is sent to the side edge edges of a plurality of sheets of paper that are deposited in a laminated state on the sheet-sheet receiving portion 40. Details of each component of such a sheet-fed paper lifting device 10 will be described below.

As shown in FIG. 2, the support portion 12 is composed of a plate-shaped member having a substantially rectangular shape, and the support portion 12 can advance and retreat in the vertical direction in FIG. 1 with respect to the sheet paper receiving portion 40. .. More specifically, the sheet-fed paper lifting device 10 according to the present embodiment includes a piston 30, and the support portion 12 is attached to the tip end (lower end) of the rod member 32 that is moved back and forth in the vertical direction by the piston 30. The top surface is attached. As a result, when the rod member 32 is moved back and forth in the vertical direction in FIG. 1 by the piston 30, the support portion 12 moves in the vertical direction in FIG. 1 with respect to the sheet paper receiving portion 40. Further, as shown in FIGS. 1 and 2, a sponge 18 is attached to the entire side edge of the support portion 12. The sponge 18 attached to the entire side edge of the support portion 12 has the support portion 12 and the sheet paper receiver when the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40 as shown in FIGS. 4 and 5. It functions as a sealing portion for sealing the gap between the portion 40 and the portion 40. Further, as shown in FIGS. 4 and 5, when the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40, the support portion 12 receives air from the closed space 41 inside the sheet paper receiving portion 40. A through hole 28 is formed as a relief portion for letting the paper escape to the outside.

The suction pad 14 is adapted to suck the upper layer of the sheet paper among the plurality of sheet papers deposited in the laminated state on the sheet paper receiving portion 40. More specifically, an air suction unit 20 is connected to the suction pad 14 via an air suction pipe 22, and the air suction unit 20 sucks air from the air suction pipe 22 so that the suction pad 14 is around. It is designed to suck air. As a result, the central portion of the upper layer of the sheet of paper among the plurality of sheet of paper deposited in the laminated state on the sheet of paper receiving portion 40 is adsorbed by the suction pad 14.

The non-contact suction pad 16 is non-contact with the upper sheet paper by ejecting air along the upper surface of the upper layer sheet paper among the plurality of sheet paper sheets deposited in the laminated state on the sheet paper receiving portion 40. By generating a negative pressure between the contact suction pad 16 and the contact suction pad 16, the upper layer of sheet paper is sucked. More specifically, the non-contact suction pad 16 is connected to the air supply unit 24 via the air supply pipe 26, and the non-contact suction pad 16 is supplied by the air supply unit 24 to supply air to the air supply pipe 26. Air is being sent to. The internal configuration of such a non-contact suction pad 16 will be described. An air passage is formed inside the non-contact suction pad 16, and an air outlet is formed at the bottom of the non-contact suction pad 16. Then, when the air supply unit 24 supplies air to the air supply pipe 26 to send air from the air supply pipe 26 to the non-contact suction pad 16, this air is formed inside the non-contact suction pad 16. It is designed to be ejected sideways from the air outlet through the passageway (see FIG. 5). In this way, when air is ejected sideways from the air outlet provided at the bottom of the non-contact suction pad 16, negative pressure is applied to the space between the upper layer of sheet paper and the bottom surface of the non-contact suction pad 16. Will occur, which will cause the upper layer of sheet paper to be sucked by the non-contact suction pad 16. The principle of such a non-contact suction pad 16 is known as the Bernoulli effect. For example, Bernoulli chuck disclosed in Japanese Patent Application Laid-Open No. 02-056590, Bernoulli vacuum gripper disclosed in German Utility Model No. 202006016833U1. Etc. can be applied.

As shown in FIG. 2, a suction pad 14 is provided at a central position on the bottom surface of the support portion 12, and two non-contact suction pads 16 are provided at positions on both sides of the suction pad 14. In this way, when two non-contact suction pads 16 are provided so as to be symmetrical with respect to the suction pads 14, the air ejected from the air outlet of each non-contact suction pad 16 receives the sheet paper. The flow of convection inside the section 40 is symmetrical, so that the air convects inside the sheet paper receiving section 40 in a well-balanced manner. Further, when two non-contact suction pads 16 are provided so as to be symmetrical with respect to the suction pads 14, the sheet paper can be lifted in a well-balanced manner by these suction pads 14 and each non-contact suction pads 16. become able to.

A plurality of sheets of paper are stacked on the sheet-sheet receiving portion 40 in a laminated state. Further, as described above, an opening 40a for receiving the support portion 12 is provided in the upper part of the sheet paper receiving portion 40, and the support portion 12 of the sheet paper receiving portion 40 is received by the opening 40a. The shape is such that the air supplied from the air supply unit 24 sometimes convects inside the sheet paper receiving unit 40. More specifically, an enclosure member 42 is provided on the upper part of the side wall of the sheet paper receiving portion 40, and an opening 40a is formed between the enclosure members 42. Then, when the support portion 12 is received by the opening 40a, the gap between the support portion 12 and the enclosure member 42 is sealed by the sponge 18, so that the sealed space 41 inside the sheet paper receiving portion 40 (FIG. 4 to 6) will be formed. Further, the inner surface 42a of the enclosure member 42 is curved, so that the air ejected laterally from the air outlet of each non-contact suction pad 16 flows downward along the inner surface 42a of the enclosure member 42. Air will flow smoothly inside the paper tray 40.

Further, as shown in FIGS. 1 and 3, the sheet-sheet receiving portion 40 has a positioning portion that positions the side edge edges of a plurality of sheets of paper that are laminated on the sheet-sheet receiving portion 40. A plurality of (specifically, for example, eight) positioning pins 44 are provided. Each positioning pin 44 extends upward from the inner bottom surface of the sheet paper receiving portion 40. By providing the positioning portion composed of such a plurality of positioning pins 44, the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40 and air is provided inside the sheet paper receiving portion 40. It becomes possible to prevent the positions of the plurality of sheets of paper deposited in the laminated state from being displaced in the horizontal direction even if the sheets are convected.

Next, the operation of the sheet-fed paper lifting device 10 having such a configuration (specifically, the upper-layer sheet-fed paper among the plurality of sheet-fed papers deposited in the laminated state on the sheet-fed paper receiving portion 40 is lifted. The operation) will be described with reference to FIGS. 4 to 7.

First, the rod member 32 is advanced downward by the piston 30 from the state shown in FIG. 1, and the support portion 12 attached to the tip of the rod member 32 is inserted into the opening 40a of the sheet paper receiving portion 40 as shown in FIG. Make it acceptable. At this time, the suction pad 14 attached to the lower surface of the support portion 12 and each non-contact suction pad 16 are brought into contact with the upper layer of sheet paper. Further, the gap between the enclosure member 42 and the support portion 12 of the sheet paper receiving portion 40 is sealed by the sponge 18, so that the sealed space 41 is formed inside the sheet paper receiving portion 40. Become.

Then, when the suction pad 14 and each non-contact suction pad 16 come into contact with the upper layer sheet paper, the suction pad 14 sucks the upper layer sheet paper and the non-contact suction pad 16 sucks the upper layer sheet paper. To start. Specifically, the air suction unit 20 sucks air from the air suction pipe 22 so that the suction pad 14 sucks the surrounding air, and the air supply unit 24 supplies air to the air supply pipe 26. By doing so, air is sent from the air supply pipe 26 to the non-contact suction pad 16, and air is ejected sideways along the upper sheet of paper from the air outlet of the non-contact suction pad 16. Here, as shown by the arrow in FIG. 5, the air ejected from the air outlet of the non-contact suction pad 16 flows downward along the inner surface 42a of the enclosure member 42, thereby causing the inside of the sheet paper receiving portion 40 to flow downward. Air will flow smoothly in the closed space 41. In this way, when the convection air in the closed space 41 inside the sheet-sheet receiving portion 40 is sent to the side edge edges of the plurality of sheet-sheets deposited in the sheet-sheet receiving portion 40 in a laminated state, each The sheet paper will be separated in the vertical direction, and it will be easier to separate the upper layer of sheet paper from the sheet of paper below it.

As shown in FIG. 6, when the rod member 32 is moved upward by the piston 30 in a state where the upper layer of sheet paper is sucked by the suction pad 14 and sucked by the non-contact suction pad 16, the rod The support portion 12 attached to the tip of the member 32 moves upward. At this time, the air convolving in the closed space 41 inside the sheet paper receiving portion 40 is also sent to the gap between the upper layer sheet paper and the sheet sheet paper below it, so that the upper layer sheet paper is used. The sheet paper will be completely separated from the sheet sheet below it. Then, as shown in FIG. 7, when the rod member 32 is further moved upward by the piston 30, the operation of lifting one sheet of paper from the sheet-sheet receiving portion 40 is completed.

The sheet-sheet lifting device according to the present embodiment is not limited to the one in which the non-contact suction pad 16 is attached to the lower surface of the support portion 12. When the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40, air can be sent from the air supply portion 24 to the closed space 41 inside the sheet paper receiving portion 40 via the support portion 12. If so, the installation of the non-contact suction pad 16 may be omitted. The configuration of the sheet-fed paper lifting device in which the installation of the non-contact suction pad 16 is omitted will be described with reference to FIG.

The sheet-fed paper lifting device 10a according to the modified example as shown in FIG. 8 has a support portion 12 instead of installing the non-contact suction pad 16 as compared with the sheet-fed paper lifting device 10 as shown in FIGS. 1 to 7. The only difference is that the air outlet 27 is provided on the lower surface of the sheet, and the other configurations are substantially the same as those of the sheet-fed paper lifting device 10 as shown in FIGS. 1 to 7. In explaining the sheet-fed paper lifting device 10a according to the modified example as shown in FIG. 8, the same reference numerals are given to the same components as the sheet-fed paper lifting device 10 as shown in FIGS. 1 to 7. The explanation is omitted.

As shown in FIG. 8, an air outlet 27 is formed on the lower surface of the support portion 12, and air is ejected downward from the air outlet 27. More specifically, an air supply unit 24 is connected to the air outlet 27 via an air supply pipe 26, and the air supply unit 24 supplies air to the air supply pipe 26 to supply air from the air outlet 27. Is designed to be ejected downward. Further, at a position below the air outlet 27, a guide portion 19 for changing the direction of the air ejected downward from the air outlet 27 is provided. Such a guide portion 19 is a support portion 12. It is attached to the underside of. In the sheet-fed paper lifting device 10a according to the modified example as shown in FIG. 8, the support portion 12 is received by the opening 40a of the sheet-fed paper receiving portion 40, whereby a closed space 41 is formed inside the sheet-fed paper receiving portion 40. In this state, air is ejected downward from the air outlet 27, and when the direction of the injected air is changed sideways by the guide portion 19, the air flowing laterally is along the inner surface 42a of the enclosure member 42. By flowing downward, air will flow smoothly in the closed space 41 inside the sheet paper receiving portion 40. In this way, when the convection air in the closed space 41 inside the sheet-sheet receiving portion 40 is sent to the side edge edges of the plurality of sheet-sheets deposited in the sheet-sheet receiving portion 40 in a laminated state, each The sheet paper will be separated in the vertical direction, and it will be easier to separate the upper layer of sheet paper from the sheet of paper below it.

In the sheet-fed paper lifting device 10a according to the modified example as shown in FIG. 8, a guide that ejects air downward from the air outlet 27 and changes the direction of the air ejected downward from the air outlet 27 sideways. Instead of providing the portion 19, an air outlet having a shape that ejects air diagonally downward or sideways may be used. In this case, the installation of the guide unit 19 can be omitted.

According to the sheet paper lifting devices 10 and 10a of the present embodiment having the above configuration, the air supply unit 24 for supplying air to the inside of the sheet paper receiving unit 40 via the support unit 12 ( A gas supply unit) is provided, and the sheet paper receiving unit 40 is provided with an opening 40a for receiving the support unit 12, and the sheet paper receiving unit 40 has the support unit 12 as the sheet paper receiving unit 40. The shape is such that the air supplied from the air supply unit 24 when it is received in the opening 40a of the sheet is convected inside the sheet paper receiving unit 40. As a result, the upper layer of the sheet of paper deposited on the sheet paper receiving portion 40 in a laminated state can be separated from the sheet of paper below it, and the sheet of paper is deposited. There is no need for a space for arranging an air supply unit, an air passage, or the like on the side of the sheet paper receiving unit 40.

Further, in the sheet paper lifting devices 10 and 10a of the present embodiment, as described above, when the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40, the sheet paper receiving portion 40 is received. The shape is such that the convection air inside the sheet-sheet receiving portion 40 is sent to the side edge edges of a plurality of sheets of paper that are deposited in a laminated state on the sheet-sheet receiving portion 40.

Further, in the sheet paper lifting device 10 of the present embodiment, as described above, a plurality of sheet sheets in which the air supplied from the air supply unit 24 is deposited on the sheet sheet receiving unit 40 in a laminated state. Of these, the non-contact suction pad 16 (non-contact suction) that sucks the upper layer of paper by ejecting it along the upper surface of the upper layer of paper to generate a negative pressure with the upper layer of paper. Part) is provided. In this case, when the support portion 12 is received in the opening 40a of the sheet paper receiving portion 40, the air ejected from the non-contact suction pad 16 can be convected inside the sheet paper receiving portion 40. become. Further, two non-contact suction pads 16 are provided on the support portion 12 so as to be symmetrical with respect to the suction pads 14. In this case, the flow in which the air ejected from the air outlet of each non-contact suction pad 16 convects inside the sheet paper receiving portion 40 is symmetrical, so that the air flows inside the sheet paper receiving portion 40. It will be convected in a well-balanced manner. Further, when two non-contact suction pads 16 are provided so as to be symmetrical with respect to the suction pads 14, the sheet paper can be lifted in a well-balanced manner by these suction pads 14 and each non-contact suction pads 16. become able to. The number of non-contact suction pads 16 is not limited to two, and the same operation is performed when three or more non-contact suction pads 16 are provided so as to be symmetrical with respect to the suction pads 14. You will be able to play an effect. Further, in the sheet-fed paper lifting device having still another configuration, only one suction pad 14 and one non-contact suction pad 16 may be provided on the support portion 12.

Further, in the sheet paper lifting device 10a according to the modified example as shown in FIG. 8, as described above, the air supplied by the air supply unit 24 is deposited on the sheet paper receiving unit 40 in a laminated state. The support portion 12 is provided with a guide portion 19 that changes the direction of the downwardly ejected air to the side, so that the air is ejected downward toward the upper layer of the sheet of paper. ing. In this case, when the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40, the air whose direction is changed by the guide portion 19 can be convected inside the sheet paper receiving portion 40. become.

Further, in the sheet-fed paper lifting devices 10 and 10a of the present embodiment, as described above, the sheet-fed paper receiving portion 40 has a plurality of sheet-fed papers laminated on the sheet-fed paper receiving portion 40. A positioning portion for positioning the side edge of the paper is provided. Specifically, the positioning unit has a plurality of positioning pins 44 extending upward from the inner bottom surface of the sheet paper receiving unit 40. According to such technical matters, even if the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40 and air is convected inside the sheet paper receiving portion 40, the sheet paper receiving portion 40 is used. It becomes possible to prevent the horizontal positions of the plurality of sheets of paper deposited in the laminated state from being displaced. The positioning unit for positioning the side edge edges of the plurality of sheets of paper stacked on the sheet-sheet receiving portion 40 in a laminated state is a plurality of positioning pins 44 extending upward from the inner bottom surface of the sheet-sheet receiving portion 40. It is not limited to. If it is possible to position the side edge edges of a plurality of sheets of paper stacked on the sheet-sheet receiving portion 40 in a laminated state, a positioning portion having a configuration other than the above-mentioned positioning pin 44 is used. You may.

Further, in the sheet paper lifting devices 10 and 10a of the present embodiment, as described above, the support portion 12 is provided with air when the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40. A through hole 28 is formed as a relief portion for allowing the air supplied from the supply portion 24 to escape from the inside of the sheet paper receiving portion 40 to the outside. In this case, the air supplied from the air supply unit 24 to the inside of the sheet sheet receiving unit 40 can be released to the outside of the sheet sheet receiving unit 40, and thus the sheet sheet from the air supply unit 24. It becomes possible to continue supplying air to the inside of the paper receiving portion 40.

Further, in the sheet paper lifting devices 10 and 10a of the present embodiment, as described above, the support portion 12 is supported by the support portion 12 when the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40. A sponge 18 is provided as a sealing portion for sealing the gap between the portion 12 and the sheet paper receiving portion 40 (specifically, the enclosing member 42). In this case, by sealing the gap between the support portion 12 and the sheet paper receiving portion 40, the air supply unit 24 when the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40. Since it is possible to prevent the air supplied from the inside of the sheet paper receiving portion 40 from leaking from the gap between the support portion 12 and the sheet paper receiving portion 40, the sheet paper receiving portion 40 It will be possible to make the air flow more smoothly inside the.

The sheet-fed paper lifting device according to the present embodiment is not limited to the above-described embodiment, and various modifications can be made.

For example, when the support portion 12 is received in the opening 40a of the sheet paper receiving portion 40, the gas supplied to the inside of the sheet paper receiving portion 40 is not limited to air. When the support portion 12 is received in the opening 40a of the sheet paper receiving portion 40, a gas other than air such as helium may be used as the gas supplied to the inside of the sheet paper receiving portion 40.

Further, when the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40, the gap between the support portion 12 and the sheet paper receiving portion 40 (specifically, the enclosure member 42) is very small. In this case, the sponge 18 may not be attached to the side edge of the support portion 12. As described above, even if the sponge 18 is not attached to the side edge of the support portion 12, the support portion 12 and the sheet paper receiving portion 40 are received when the support portion 12 is received by the opening 40a of the sheet paper receiving portion 40. When the amount of air leaking from the gap between the sheets is very small, the air can be smoothly convected inside the sheet paper receiving portion 40.

Further, the installation of the positioning portion such as the positioning pin 44 in the sheet paper receiving portion 40 may be omitted. In this case, when air is convected inside the sheet paper receiving portion 40, the horizontal positions of the plurality of sheets of paper deposited on the sheet sheet receiving portion 40 in a laminated state may be slightly displaced. However, after the sheet paper lifted by the sheet paper lifting devices 10 and 10a is released from the suction pad 14, the position of the sheet paper can be returned to a predetermined position by adjusting the position again. become able to.

10, 10a Sheet paper lifting device 12 Support part 14 Suction pad 16 Non-contact suction pad 18 Sponge 19 Guide part 20 Air suction part 22 Air suction pipe 24 Air supply part 26 Air supply pipe 27 Air outlet 28 Through hole 30 Piston 32 Rod member 40 Sheet paper receiving part 40a Opening 41 Sealed space 42 Enclosing member 42a Inner surface 44 Positioning pin

Claims (10)

It is a sheet-fed paper lifting device that lifts the upper-layer sheet-fed paper among a plurality of sheet-fed sheets deposited in a laminated state.
A sheet paper receiving part where multiple sheets of paper are stacked in a laminated state inside,
Of the plurality of sheets of paper deposited in the laminated state on the sheet-sheet receiving portion, an adsorption portion for adsorbing the upper layer of the sheet-fed paper,
A support portion that can move forward and backward with respect to the sheet paper receiving portion and supports the suction portion, and a support portion that supports the suction portion.
A gas supply unit for supplying gas to the inside of the sheet paper receiving unit via the support unit,
With
An enclosure member is provided on the upper portion of the side wall of the sheet paper receiving portion, and an opening for receiving the support portion is formed between the enclosure members. When the support portion closes the opening, the sheet sheet is formed. A closed space is formed inside the paper receiving part,
With the support portion closing the opening, the gas supplied from the gas supply portion to the inside of the sheet paper receiving portion is ejected sideways.
A sheet-sheet lifting device in which a gas ejected laterally inside the sheet-sheet receiving portion flows downward along the inner surface of the enclosure member, so that the gas convects in the enclosed space. In the sheet-sheet receiving portion, when the support portion is received by the opening of the sheet-sheet receiving portion, the gas convolving in the closed space of the sheet-sheet receiving portion is laminated on the sheet-sheet receiving portion. The sheet-fed paper lifting device according to claim 1, which is shaped so as to be fed to the side edge edges of a plurality of sheets of paper that are deposited in a state. By ejecting the gas supplied from the gas supply section along the upper surface of the upper sheet sheet among the plurality of sheet sheet papers deposited in the laminated state on the sheet sheet paper receiving portion, the upper layer sheet sheet is ejected. The sheet-fed paper lifting device according to claim 1 or 2, further comprising a Bernoulli chuck or a Bernoulli vacuum gripper that sucks an upper layer of sheet-fed paper by creating a negative pressure between the sheets and the paper. The sheet-sheet lifting device according to claim 3, wherein a plurality of Bernoulli chucks or Bernoulli vacuum grippers are provided on the support portion so as to be symmetrical with respect to the suction portion. The gas supplied by the gas supply unit is ejected downward toward the upper layer of the sheet paper among the plurality of sheet papers deposited in the laminated state on the sheet sheet receiving unit. The sheet-sheet lifting device according to claim 1 or 2, wherein the support portion is provided with a guide portion that changes the direction of the gas ejected downward to the side. Any of claims 1 to 5, wherein the sheet-sheet receiving portion is provided with a positioning portion for positioning the side edge edges of a plurality of sheet-sheets deposited in a laminated state on the sheet-sheet receiving portion. The sheet paper lifting device according to item 1. The sheet-sheet lifting device according to claim 6, wherein the positioning portion has a plurality of positioning pins extending upward from the inner bottom surface of the sheet-sheet receiving portion. The support portion includes a relief portion that allows the gas supplied from the gas supply portion to escape from the inside of the sheet paper receiving portion to the outside when the support portion is received in the opening of the sheet paper receiving portion. The sheet-fed paper lifting device according to any one of claims 1 to 7, which is provided. The support portion includes a sealing portion for sealing a gap between the support portion and the sheet paper receiving portion when the support portion is received by the opening of the sheet paper receiving portion. The sheet-fed paper lifting device according to any one of claims 1 to 8, which is provided. In order to adsorb the sheet paper receiving portion in which a plurality of sheets of paper are laminated in a laminated state and the upper layer of the sheet sheets of the plurality of sheets of paper deposited in the laminated state in the sheet sheet receiving portion. It is possible to advance and retreat to the suction part and the sheet paper receiving part, and supply gas to the inside of the sheet paper receiving part via the support part supporting the suction part and the support part. A gas supply unit for the paper is provided, and an enclosure member is provided on the upper portion of the side wall of the sheet paper receiving portion, and an opening for receiving the support portion is formed between the enclosure members. It is a method of lifting a sheet of paper by a sheet of paper lifting device in which a closed space is formed inside the sheet of paper receiving portion when the portion closes the opening.
A step of closing the opening with the support portion by advancing the support portion with respect to the sheet paper receiving portion.
A step of laterally ejecting the gas supplied from the gas supply portion to the inside of the sheet paper receiving portion while the support portion closes the opening.
With
A method for lifting a sheet of paper, wherein the gas ejected laterally inside the sheet-sheet receiving portion flows downward along the inner surface of the enclosure member, so that the gas convects in the enclosed space.

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