JP5656699B2 - Sheet feeding device - Google Patents

Description

  The present invention relates to a sheet feeding apparatus.

Conventionally, in order to efficiently mass-produce various products using flexible sheet-like bodies such as paper and resin sheets, or to inspect a large number of sheet-like bodies, a large number of sheet-like bodies Is used in a stacked state in a sheet storage portion (storage means), and a sheet supply device is used to supply sheet-like bodies to the outside one by one from the sheet storage portion (see, for example, Patent Document 1).
In the sheet supply apparatus described in Patent Literature 1, a supply port for taking out the sheet-like body from the sheet accommodation portion is formed at one end of the sheet accommodation portion in the stacking direction of the sheet-like bodies. In addition, this sheet supply apparatus has an adsorption member that can be moved back and forth in the stacking direction of the sheet-like body on the surface of one sheet-like body located on the supply port side among the many sheet-like bodies stacked. After adsorbing, it is configured to move from the supply port to the outside of the sheet storage portion.

  Further, the sheet feeding device described in Patent Document 1 is provided with a pressing unit that presses the sheet-like bodies stacked in the sheet storage unit toward the supply port of the sheet storage unit. Further, a claw (temporary holding means) that contacts the end of the surface of the sheet-like body located closest to the supply port in the sheet storage unit is formed in the supply port of the sheet storage unit, and the sheet in the sheet storage unit The shape body is prevented from being pulled out by the pressing force of the pressing means.

JP-A-9-301557

In the conventional sheet feeding apparatus configured as described above, when the adsorbing member is adsorbed on the surface of one sheet-like body and the sheet-like body is transferred, another sheet-like body is provided on the back side of the sheet-like body. May be transferred due to static electricity or the like while the sheet-like body is transferred. That is, there is a possibility that a plurality of sheet-like bodies are supplied to the outside of the sheet supply apparatus in a state where they overlap each other.
In order to prevent this sheet-like body from being overlaid, in the sheet feeding apparatus described in Patent Document 1, the sheet-like body adsorbed by the adsorbing member and another sheet-like body closely attached to the back side of the sheet-like body Air is blown in between, and another sheet-like body is peeled off from the sheet-like body adsorbed by the adsorbing member.

However, in the sheet supply apparatus described in Patent Document 1, if there is no gap between two closely-contacted sheet-like bodies, the problem is that the two sheet-like bodies cannot be peeled off even if air is blown. There is.
In addition, the sheet supply apparatus described in Patent Document 1 requires a power source for blowing air, which causes a problem that the manufacturing cost and maintenance cost of the sheet supply apparatus are increased.

  Furthermore, in the sheet supply apparatus described in Patent Document 1, since the sheet-like body stacked in the sheet storage portion is always pressed against the claw of the supply port by the pressing means, the sheet-like body is deformed or damaged. There is also a problem that it ends up. In particular, when the sheet-like body is used for manufacturing a product, the product may be defective due to deformation or damage of the sheet-like body.

  The present invention has been made in view of the above-described circumstances, and can prevent the sheet-like body from being overlaid while keeping the manufacturing cost and the maintenance cost low, and can also prevent the deformation and damage of the sheet-like body. It aims at providing the sheet supply apparatus which becomes.

In order to solve this problem, the sheet feeding apparatus of the present invention includes a storage unit that can be stored in a state where a plurality of flexible sheet-like bodies are stacked in order from the bottom, and an uppermost unit that is stored in the storage unit. An adsorbing part that adsorbs to the upper surface of the sheet-like body, and adsorbs the uppermost sheet-like body to the adsorbing part, and then moves the uppermost sheet-like body upward in the stacking direction. And the uppermost sheet as the uppermost sheet-like body is lifted by the suction conveying means. The uppermost sheet-like body is disposed at a position spaced above the uppermost sheet-like body accommodated in the accommodating portion. A pair of claws that are in contact with both ends sandwiching a region adsorbed by the adsorbing portion on the upper surface of the adsorbent, and curve the uppermost sheet-like body so that both end portions of the uppermost sheet-like body face downward comprising a part, a pair of claws, the When viewed from the arrangement direction of the claw portions of the pair, characterized in that are arranged to intersect with each other.

In the sheet feeding apparatus having the above-described configuration, the uppermost sheet-like body is in contact with the lower surface of the uppermost sheet-like body (hereinafter referred to as the lower sheet-like body) by the suction conveyance means. When the body rises, after the uppermost sheet-like body and the lower sheet-like body are separated from the remaining sheet-like bodies stacked in the housing portion, the uppermost sheet-like body comes into contact with the pair of claws.
When the uppermost sheet-like body is further raised from this contact state, both ends of the uppermost sheet-like body and the lower sheet-like body are bent downward. At this time, since the curvature of the lower sheet-like body is larger than the curvature of the uppermost sheet-like body, the uppermost sheet-like body and the lower sheet-like body are in close contact with each other without a gap. However, the lower sheet-like body can be reliably separated from the uppermost sheet-like body and dropped downward. That is, it is possible to reliably prevent the sheet-like body from being overlaid.

In addition, since the configuration required for preventing the sheet-like body from being overlapped is only the claw portion disposed above the accommodating portion, the manufacturing cost and maintenance cost of the sheet feeding device can be reduced compared to the conventional one. Can be suppressed.
Furthermore, since the pair of claw portions are arranged with a space above the sheet-like body laminated in the housing portion, the sheet-like body laminated in the housing portion is not subjected to external force as in the past. Therefore, deformation and damage of the sheet-like body can also be prevented.

Further, in the sheet feeding apparatus having the above-described structure, the pair of claws, that have been arranged so as to cross each other when viewed from the arrangement direction of the pair of claw portions.
For this reason , when the uppermost sheet-like body in the container is lifted by the suction conveyance means and comes into contact with the pair of claws, when the uppermost sheet-like body is further lifted, the uppermost sheet is added to the above-described curved deformation. Both end portions of the shaped body intersect each other. That is, the uppermost sheet-like body is deformed so as to be twisted.
Therefore, even if the uppermost sheet-like body rises by the suction conveyance means in a state where another sheet-like body (lower sheet-like body) is in close contact with the lower surface of the uppermost sheet-like body, the aforementioned sheet-like body By the torsional deformation, the lower sheet-like body can be more reliably separated from the uppermost sheet-like body and dropped downward.

Moreover, in the said sheet supply apparatus, it is good that the space | interval of a pair of said nail | claw part becomes narrow as it goes to the upper side of the said lamination direction.
And in order to narrow the space | interval of a pair of nail | claw part toward the upper side of the said lamination direction, for example, at least one of the said pair of nail | claw part is formed in step shape with a some level | step difference. That's fine.

Further, at least one of the pair of claw portions may have an inclined surface extending inward of the sheet-like body as viewed in plan as it goes upward in the stacking direction.
In addition, when the said nail | claw part has the said inclined surface, the uneven | corrugated | grooved part may be formed in the said inclined surface.

  In these configurations, after the uppermost sheet-like body in the accommodating portion is lifted by the suction conveyance means and comes into contact with the pair of claws, both ends of the uppermost sheet-like body are further raised as the uppermost sheet-like body is further raised. The degree of bending (bending degree) of at least one of the parts (hereinafter referred to as one end part) gradually increases. That is, as compared with the case where the distance between the pair of claw portions is equal, the curved deformation of one end portion (both end portions) of the uppermost sheet-like body accompanying the rise of the uppermost sheet-like body is performed slowly.

  Therefore, when the uppermost sheet is lifted by the suction conveyance means while another sheet (lower sheet) is in close contact with the lower surface of the uppermost sheet, the uppermost sheet The degree of curvature of one end (both ends) of the sheet and the lower sheet is gradually increased. When the minimum degree of curvature necessary for separating the closely attached sheet-like bodies is reached, the lower sheet-like body is separated from the uppermost sheet-like body. That is, it is possible to suppress the degree of bending of the lower sheet-like body to the minimum and prevent the lower sheet-like body from being housed in the housing portion while being curved and deformed.

  Furthermore, in the sheet supply apparatus, it is preferable that at least one of the pair of claw portions includes a plurality of protrusions arranged at intervals in the stacking direction.

In this configuration, as the uppermost sheet-like body rises by the suction conveyance means, at least one of the both end portions (hereinafter referred to as one end portion) of the uppermost sheet-like body is disposed on the lower side in the stacking direction. The curved state of one end (both ends) of the uppermost sheet-like body is released by moving upward from the lower projection after contacting and curving the projection (lower projection). . Furthermore, after this curved state is released, one end (both ends) of the uppermost sheet-like body is bent again by another projection (upper projection) positioned above the lower projection. That is, as the uppermost sheet-like body rises by the suction conveyance means, the curved state of one end (both ends) of the uppermost sheet-like body and the release thereof are repeated, so that one end (both ends of the uppermost sheet-like body) Part) will vibrate.
Therefore, when the uppermost sheet-like body is lifted by the suction conveyance means while another sheet-like body (lower sheet-like body) is in close contact with the lower surface of the uppermost sheet-like body, the above-described sheet The lower sheet-shaped body can be more reliably separated from the uppermost sheet-shaped body by the vibration of the sheet-shaped body.

Further, in the sheet supply device, a protrusion positioned on the upper side in the stacking direction among the plurality of protrusions protrudes inside the sheet-like body in a plan view than a protrusion positioned on the lower side in the stacking direction. May be.
In this configuration, the degree of curvature of one end (both ends) of the uppermost sheet-like body by the upper protrusion is greater than the degree of curvature of one end (both ends) of the uppermost sheet-like body by the lower protrusion. In other words, as the uppermost sheet-like body rises, the amplitude at which one end (both ends) of the uppermost sheet-like body vibrates increases.

  Therefore, when the uppermost sheet is lifted by the suction conveyance means while another sheet (lower sheet) is in close contact with the lower surface of the uppermost sheet, the uppermost sheet Each time the sheet and the lower sheet are passed through the protrusions arranged in the vertical direction, the vibration is reduced when the minimum amount of vibration necessary to separate the closely attached sheets is reached. The side sheet is separated from the uppermost sheet. In other words, the degree of bending of the lower sheet-like body can be minimized, and the lower sheet-like body can be prevented from being housed in the housing portion while being curved and deformed.

Furthermore, in the sheet supply apparatus, when the pair of claw portions is constituted by the plurality of protrusions, the height positions of the protrusions are shifted from each other between the pair of claw portions. Good.
In this configuration, as described above, the curved state of both ends of the uppermost sheet-like body and the release thereof are repeated as the uppermost sheet-like body rises by the suction conveyance means, but the curved state and the release thereof are repeated. The timing of operation differs between one end (one end) and the other end (the other end) of the uppermost sheet-like body. For this reason, compared with the case where the height position of a processus | protrusion is equal between a pair of nail | claw parts, the frequency of the uppermost sheet-like object can be increased, As a result, it adhered to the uppermost sheet-like object. It becomes easier to separate the lower sheet-like body.

In the sheet supply apparatus, it is preferable that at least one of the pair of claw portions has conductivity and is grounded.
In this configuration, even if the uppermost sheet-like body and the lower sheet-like body are in close contact with each other due to static electricity, the uppermost sheet-like body and the lower sheet-like body are brought into contact with the claw portion. Since the static electricity of the body is removed, the adhesion of the sheet-like body due to static electricity can be eliminated or reduced. Therefore, the lower sheet-like body can be easily separated from the uppermost sheet-like body even if the degree of bending deformation, torsional deformation, and vibration of the sheet-like body by the claw portion is set small.

Further, when a through-hole penetrating in the thickness direction is formed in the sheet-like body, the sheet supply device is configured to start from the bottom surface of the sheet accommodating portion on which the stacked sheet-like body is placed. It is good to provide the guide pin extended to the upper direction of a pair of nail | claw part and penetrated to the through-hole of the said sheet-like body.
In this configuration, when the uppermost sheet-shaped body passes upward from below the pair of claws, the lower sheet-shaped body attached to the lower surface of the uppermost sheet-shaped body is the uppermost sheet of the pair of claws. When the sheet-like body is separated from the sheet-like body and falls downward, it is possible to suppress the occurrence of displacement in the lower sheet-like body.

Therefore, after the uppermost sheet-like body is taken out from the storage portion, the suction position of the suction portion with respect to the upper surface of the lower sheet is prevented from shifting when the lower sheet-like body is taken out from the storage portion by the suction conveyance means. be able to. In other words, by providing the guide pin, it is possible to prevent the adsorbed portion of the sheet-like body from being displaced with respect to the adsorbing portion. As a result, the position accuracy of the sheet-like body at the external predetermined position can be improved when the sheet-like body is conveyed to a predetermined external position by the suction conveyance means.
Further, since the guide pin extends upward from the pair of claw portions, the lower sheet-like body is the uppermost sheet-like body after the formation portion of the through hole is moved upward from the pair of claw portions. Even if the guide pins are separated from each other, the insertion state of the guide pins into the through holes can be maintained. That is, it is possible to reliably prevent the guide pin from coming out of the through hole of the lower sheet-like body between the time when the lower sheet-like body rises together with the uppermost sheet-like body and then moves away.

  When the sheet-like body is formed in a polygonal shape in plan view, in the sheet feeding device, at least one of the pair of claws is above the corner of the uppermost sheet-like body in plan view. May be arranged.

  According to the present invention, it is possible to prevent the sheet-like body from being overlaid while keeping the manufacturing cost and maintenance cost of the sheet supply device low. Further, deformation and damage of the sheet-like body can be prevented.

FIG. 3 is a schematic top view illustrating a state where the sheet supply apparatus according to the first embodiment of the present invention is viewed from above. It is AA arrow sectional drawing of FIG. It is a schematic sectional drawing which shows the taking-out operation | movement of the sheet-like body by the sheet supply apparatus shown in FIG. It is a schematic sectional drawing which shows the taking-out operation | movement of the sheet-like body by the sheet supply apparatus shown in FIG. It is a schematic sectional drawing which shows an example of a pair of nail | claw part which comprises the sheet supply apparatus which concerns on 2nd embodiment of this invention. It is a schematic sectional drawing which shows the other example of a pair of nail | claw part which comprises the sheet supply apparatus which concerns on 2nd embodiment of this invention. It is a schematic sectional drawing which shows the other example of a pair of nail | claw part which comprises the sheet supply apparatus which concerns on 2nd embodiment of this invention. It is a schematic sectional drawing which shows a pair of nail | claw part which comprises the sheet supply apparatus which concerns on 3rd embodiment of this invention. It is a schematic sectional drawing which shows a pair of nail | claw part which comprises the sheet | seat supply apparatus which concerns on 4th embodiment of this invention. It is a schematic sectional drawing which shows a pair of nail | claw part which comprises the sheet | seat supply apparatus which concerns on 5th embodiment of this invention. It is a schematic top view which shows the state which looked at the sheet supply apparatus which concerns on 6th embodiment of this invention from upper direction. It is a schematic side view which shows the state which looked at the sheet supply apparatus shown in FIG. 11 from C direction. It is a schematic top view which shows the state which looked at the sheet supply apparatus which concerns on other embodiment of this invention from upper direction. It is a schematic side view which shows the state which looked at the sheet supply apparatus shown in FIG. 13 from the D direction. It is a schematic top view which shows the state which looked at the sheet supply apparatus which concerns on other embodiment of this invention from upper direction. It is a schematic top view which shows the state which looked at the sheet supply apparatus which concerns on other embodiment of this invention from upper direction. It is a schematic top view which shows the state which looked at the sheet supply apparatus which concerns on other embodiment of this invention from upper direction.

[First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the sheet feeding apparatus 1 according to this embodiment handles a flexible sheet-like body 101 that is formed in a thin film or thin plate shape such as paper, a resin sheet, or an envelope. Is. Note that the sheet-like body 101 used in the present embodiment is formed in a rectangular shape in plan view. The sheet-like body 101 has a plurality of (two in the illustrated example) through-holes 101d penetrating in the thickness direction. The plurality of through holes 101d are arranged at intervals from each other along the long side of the sheet-like body 101 in plan view.
The sheet supply apparatus 1 includes a storage unit 2 that can store a plurality of or a plurality of the sheet-like bodies 101 and a suction conveyance unit that moves the sheet-like bodies 101 in the storage part 2 to the outside. 3 is generally configured.

  The accommodating portion 2 includes a bottom wall portion 21 having a flat bottom wall upper surface (bottom surface) 21a on which the sheet-like body 101 is placed in a stacked state, and a pair of side wall portions 22 and 22 protruding from the bottom wall upper surface 21a. ing. The bottom wall portion 21 is disposed such that the bottom wall upper surface 21a faces upward in the vertical direction (Z-axis direction), whereby the sheet-like body 101 is stacked in order from the bottom in the storage portion 2. Become. In the following description, an assembly in which a plurality of sheet-like bodies 101 are laminated on the bottom wall upper surface 21a is also referred to as a laminated body 100.

The pair of side wall portions 22 and 22 are spaced apart from each other so as to support the laminated body 100 placed on the bottom wall upper surface 21a from both sides.
Specifically, each side wall portion 22 has a flat inner side surface 22a extending perpendicularly from the bottom wall upper surface 21a, and the inner side surfaces 22a, 22a of the pair of side wall portions 22, 22 are formed of the laminate 100. Are opposed to each other in parallel. And each inner side surface 22a opposes the long side of the laminated sheet-like body 101, and the space | interval of a pair of inner side surfaces 22a and 22a becomes substantially equivalent to the short side length of the sheet-like body 101 in planar view. Alternatively, it is set to be slightly longer than the short side length.

Therefore, the pair of side wall portions 22 and 22 are arranged so that the stacked sheet-like body 101 does not translate (displace) in the short side direction (X-axis direction) and in a plane along the bottom wall upper surface 21a. It plays the role of regulating so as not to rotate (position shift).
In the illustrated example, the dimension of the inner side surface 22 a of the side wall portion 22 along the long side direction (Y-axis direction) of the sheet-like body 101 (hereinafter referred to as the width dimension of the inner side face 22 a). Although the length is set shorter than the long side length, the present invention is not limited to this. For example, the length may be set substantially equal to or longer than the long side length of the sheet-like body 101.
The housing portion 2 configured as described above is formed of a conductive material and is grounded via the ground wire 23.

The adsorbing and conveying means 3 includes an adsorbing unit 31 that adsorbs the upper surface 101 c of the uppermost sheet-like body 101 </ b> A of the stacked body 100 accommodated in the accommodating unit 2, and at least the sheet-like object 101 with respect to the accommodating unit 2. And a drive mechanism (not shown) that moves up and down in the stacking direction (Z-axis direction). The suction unit 31 is configured by providing a suction pad 33 at the tip of a suction pipe 32 that sucks air.
Therefore, in this suction conveyance means 3, the uppermost sheet-like body is obtained by sucking the air in the suction pipe 32 with a vacuum pump (not shown) or the like while the suction pad 33 is pressed against the uppermost sheet-like body 101A. 101A can be adsorbed to the adsorption pad 33. Further, the uppermost sheet-like body 101A can be moved upward in the stacking direction by adsorbing the uppermost sheet-like body 101A to the suction pad 33 and then moving the suction portion 31 upward by the drive mechanism. .

In the illustrated example, the suction pad 33 is set so as to be sucked to the central region of the upper surface 101c of the uppermost sheet-like body 101A. However, the uppermost sheet-like shape is at least between a pair of claw portions 4 and 4 described later. What is necessary is just to set so that it may adsorb | suck to the area | region (to-be-adsorbed area | region 101e) which does not interfere with the through-hole 101d among the upper surfaces 101c of the body 101A.
Further, the drive mechanism of the suction conveyance means 3 is not limited to moving the suction unit 31 in the vertical direction, and the suction unit 31 is moved in the vertical and horizontal directions so that the sheet-like body 101 can be transported to a predetermined position outside the storage unit 2. It may be configured to move in the (X-axis direction or Y-axis direction).

Furthermore, the sheet supply apparatus 1 according to the present embodiment includes a pair of claw portions 4 and 4 for preventing the sheet-like body 101 from being overlapped by the suction conveyance means 3.
Each claw portion 4 protrudes from the inner side surface 22a at the front end of each side wall portion 22 in the protruding direction, and the width direction (Y-axis direction) of the inner side surface 22a of the side wall portion 22 so as to be parallel to the bottom wall upper surface 21a. ). In the illustrated example, the width dimension of each claw part 4 is set to be equal to the width dimension of the inner side surface 22a of the side wall part 22. However, the present invention is not limited to this, for example, the width dimension of the inner side surface 22a. It may be set small.
And each nail | claw part 4 is integrally formed in each side wall part 22, and has electroconductivity similarly to the accommodating part 2 mentioned above.

The height position of each claw portion 4 is set to be a position spaced above the uppermost sheet-like body 101A accommodated in the accommodating portion 2. In other words, when using the sheet supply apparatus 1 of the present embodiment, the sheet laminated on the bottom wall upper surface 21a so that the upper surface 101c of the uppermost sheet-like body 101A is positioned lower than the pair of claw portions 4 and 4. The number of sheets 101 is limited.
And a pair of nail | claw parts 4 and 4 are distribute | arranged so as to oppose the both ends which pinch | interpose the area | region (to-be-adsorbed area | region 101e) adsorb | sucked to the adsorption | suction part 31 among the upper surfaces 101c of the uppermost sheet-like body 101A by planar view. ing. In the present embodiment, the pair of claw portions 4 and 4 are opposed to the two peripheral regions located at both ends in the short side direction (X-axis direction) of the upper surface 101c of the uppermost sheet-like body 101A. Yes.

  The pair of claw portions 4 and 4 come into contact with both end portions of the upper surface 101c of the uppermost sheet-like body 101A as the uppermost sheet-like body 101A is raised by the suction conveyance means 3 described above, and the uppermost sheet-like shape The protruding length is set so as to bend the uppermost sheet-like body 101A so that both ends of the body 101A face downward (see FIG. 3 and the like). Therefore, the protruding lengths of the pair of claw portions 4 and 4 are, for example, not to interfere with the suctioned region 101e and the through-hole 101d of the upper surface 101c of the uppermost sheet-like body 101A in plan view, and the suction conveying means 3 The uppermost sheet-like body 101A is set to such an extent that the uppermost sheet-like body 101A is not peeled off from the suction pad 33 due to contact with both ends of the upper surface 101c of the uppermost sheet-like body 101A.

  Furthermore, the sheet supply apparatus 1 according to the present embodiment is provided with a plurality (two in the illustrated example) of guide pins 5 that extend from the bottom wall upper surface 21a of the storage portion 2 to above the pair of claw portions 4 and 4. Yes. Each guide pin 5 is inserted through each through-hole 101d of the sheet-like body 101 laminated on the bottom wall upper surface 21a. Therefore, the plurality of guide pins 5 are arranged so as to coincide with the formation positions of the plurality of through holes 101d of the sheet-like body 101 in plan view. In the illustrated example, the distal ends of the guide pins 5 in the extending direction are tapered, but the present invention is not limited to this.

  By forming the guide pins 5 in this way, the sheet-like body 101 accommodated in the accommodating portion 2 is translated (displaced) in the direction along the bottom wall upper surface 21a (X-axis direction, Y-axis direction). Is prevented. Further, since a plurality of guide pins 5 are formed, rotation (position shift) in the plane along the bottom wall upper surface 21a is also prevented. Therefore, it can prevent that position shift arises between the sheet-like bodies 101 laminated | stacked on the bottom wall upper surface 21a.

Next, an example of the operation of the sheet supply apparatus 1 configured as described above will be described.
When supplying the sheet-like body 101 laminated in the accommodating portion 2 to the outside, first, as shown in FIG. 3A, the suction portion 31 is moved downward to bring the suction pad 33 into the uppermost sheet shape. Press against the upper surface 101c of the body 101A. Next, the air in the suction pipe 32 is sucked so that the uppermost sheet-like body 101 </ b> A is sucked by the suction pad 33. Then, by moving the suction portion 31 upward while maintaining this suction state, the uppermost sheet-like body 101A sucked by the suction pad 33 also rises as shown in FIG.

Here, as in the illustrated example, when another sheet-like body 101B (hereinafter also referred to as the lower sheet-like body 101B) is in close contact with the lower surface of the uppermost sheet-like body 101A due to static electricity or the like, The lower sheet-like body 101B can be peeled off from the uppermost sheet-like body 101A by the cooperation of the pair of claw portions 4 and 4 and the suction conveyance means 3.
More specifically, when the uppermost sheet-like body 101A and the lower sheet-like body 101B rise in close contact with each other, the sheet-like body 101 is separated from the remaining sheet-like bodies 101 stacked in the accommodating portion 2, and then the state shown in FIG. As shown in the figure, both end portions of the upper surface 101c of the uppermost sheet-like body 101A abut against the pair of claw portions 4 and 4.

  Thereafter, when the uppermost sheet-like body 101A is further raised from this contact state, both ends of the uppermost sheet-like body 101A and the lower sheet-like body 101B are curved downward as shown in FIG. 4B. To do. The degree of curvature gradually increases as the uppermost sheet-like body 101A rises (see FIGS. 4A and 4B). During this bending, the curvature of the lower sheet-like body 101B is larger than the curvature of the uppermost sheet-like body 101A, so that the uppermost sheet-like body 101A and the lower sheet-like body 101B Even if the sheet-like body 101B is in close contact with no gap, the lower sheet-like body 101B can be reliably separated from the uppermost sheet-like body 101A and dropped downward.

  As shown in FIG. 4 (c), the uppermost sheet-like body 101A separated from the lower sheet-like body 101B moves to a position above the pair of claw portions 4, 4, so that the pair of claw portions 4, 4 is released, and the curved state is also released. Further, when the uppermost sheet-like body 101A moves above the tip of the guide pin 5, the guide pin 5 comes out of the through hole 101d (see FIG. 1) of the uppermost sheet-like body 101A.

  On the other hand, as shown in FIG. 4B, when the lower sheet-like body 101B separated from the uppermost sheet-like body 101A falls, the lower sheet-like body 101B is inserted into the through-hole 101d. The guide pin 5 and the inner side surface 22a of the side wall portion 22 do not translate in the direction along the bottom wall upper surface 21a (X-axis direction, Y-axis direction), and within the plane along the bottom wall upper surface 21a. It does not rotate. Therefore, the lower sheet-like body 101B, which is separated from the uppermost sheet-like body 101A and drops, is arranged on the remaining sheet-like body 101 in a state of being displaced with respect to the remaining stacked sheet-like bodies 101. Can be prevented.

  As described above, according to the sheet supply apparatus 1 according to the present embodiment, the uppermost sheet-like body 101 </ b> A among the sheet-like bodies 101 stacked in the accommodation unit 2 is taken out from the accommodation unit 2 by the suction conveyance unit 3. In this case, since the uppermost sheet-like body 101A is curved by the pair of claw portions 4 and 4, another sheet-like body 101B that is in close contact with the lower surface of the uppermost sheet-like body 101A can be peeled off. It is possible to reliably take out the individual bodies 101 one by one. In other words, it is possible to reliably prevent the sheet-like body 101 from being overlaid.

Further, since it is possible to prevent the sheet-like body 101 from being overlaid only by providing at least a pair of claw portions 4 and 4 above the accommodating portion 2, the manufacturing cost and maintenance of the sheet feeding apparatus 1 can be reduced compared to the conventional one. Costs can be kept low.
Further, the pair of claw portions 4, 4 are arranged at a distance above the sheet-like body 101 laminated in the accommodating portion 2, so that the sheet-like body 101 laminated in the accommodating portion 2 Since the conventional external force is not applied, deformation and damage of the sheet-like body 101 can be prevented.

In addition, since the container 2 has conductivity and is grounded, the sheet-like body 101 stacked in the container 2 is prevented from being charged with static electricity, and another surface is provided on the lower surface of the uppermost sheet-like body 101A. It is possible to prevent the sheet-like body 101B (lower sheet-like body 101B) from being in close contact with static electricity.
Further, since the pair of claw portions 4 and 4 are electrically conductive and grounded, the uppermost sheet-like body 101A and the lower sheet-like body 101B are lifted by the suction conveyance means 3 in a state of being in close contact by static electricity. In addition, when the uppermost sheet-like body 101A comes into contact with the claw portion 4, static electricity of the uppermost sheet-like body 101A and the lower sheet-like body 101B can be removed. That is, the adhesion between the uppermost sheet-like body 101A and the lower sheet-like body 101B can be eliminated or reduced. Therefore, even if the protruding length of the claw portion 4 is set to be small, for example, the degree of bending deformation of the sheet-like body 101 by the claw portion 4 is set to be small, the lower sheet-like body 101B is the uppermost sheet-like body. It can be easily separated from 101A.

  Further, since the sheet supply apparatus 1 includes the guide pins 5, the lower sheet-like body 101B that is separated from the uppermost sheet-like body 101A and falls is positioned with respect to the remaining stacked sheet-like bodies 101. It is possible to prevent the sheet from being placed on the remaining sheet-like body 101 in a shifted state. Therefore, when the lower sheet-like body 101B is taken out from the storage section 2 after the uppermost sheet-like body 101A is taken out from the storage section 2 by the suction conveyance means 3, the suction section with respect to the upper surface of the lower sheet-like body 101B. It can suppress that the adsorption | suction position of 31 shifts | deviates. In other words, it is possible to prevent the adsorbed portion of the sheet-like body 101 from being adsorbed with respect to the adsorbing portion 31 from shifting. As a result, when the sheet-like body 101 is conveyed to a predetermined external position by the suction conveyance means 3, the positional accuracy of the sheet-like body 101 at the external predetermined position can be improved.

  Furthermore, since the guide pin 5 extends upward from the pair of claw portions 4 and 4, the through-hole 101d of the lower sheet-like body 101B moves upward from the pair of claw portions 4 and 4, and then Even if the sheet-like body 101B on the side is separated from the uppermost sheet-like body 101A, the insertion state of the guide pin 5 with respect to the through hole 101d can be maintained. That is, the guide pin 5 is reliably prevented from coming out of the through-hole 101d of the lower sheet-like body 101B after the lower sheet-like body 101B is lifted together with the uppermost sheet-like body 101A and separated. it can.

  The plurality of through-holes 101d and the guide pins 5 are not limited to being arranged as in the first embodiment, but are spaced from each other at least in a region that does not interfere with the pair of claw portions 4 and 4 and the suction portion 31. As long as it is arranged.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.
The sheet supply apparatus according to this embodiment is different from the sheet supply apparatus according to the first embodiment only in the shapes of the pair of claw portions 4 and 4.
As shown in FIGS. 5-7, a pair of nail | claw parts 4 and 4 which comprise the sheet supply apparatus of this embodiment are each protruded and formed from the inner surface 22a of the side wall part 22 similarly to 1st embodiment. Yes. The pair of claw portions 4 and 4 are formed such that the distance between them becomes narrower toward the upper side in the stacking direction of the sheet-like body 101 (Z-axis positive direction side, see FIG. 2 and the like). Hereinafter, the shape of each nail | claw part 4 shown to FIGS. 5-7 is demonstrated.

  Each claw portion 4 shown in FIG. 5 has an inclined surface 41 extending inwardly of the sheet-like body 101 (see FIG. 2 and the like) as viewed in plan as it goes toward the positive Z-axis direction. The inclined surface 41 faces the upper surface 101c side of the uppermost sheet-like body 101A stacked in the accommodating portion 2. For this reason, when the uppermost sheet-like body 101 </ b> A is lifted by the suction conveyance means 3, it comes into contact with the inclined surface 41 of the claw portion 4.

Moreover, each nail | claw part 4 shown in FIG. 6 forms the uneven | corrugated | grooved part 42 which waves in the lamination direction (Z-axis direction) of the sheet-like body 101 in the accommodating part 2 in the inclined surface 41 similar to the structure shown in FIG. Configured. Therefore, when the uppermost sheet-like body 101 </ b> A is lifted by the suction conveyance means 3, it comes into contact with the uneven portion 42 of the claw portion 4.
In the illustrated example, the uneven portion 42 of one claw portion 4 (the claw portion 4 on the right side of the paper surface) is constituted by a plurality of convex portions 42A protruding from the inclined surface 41, and the other claw portion 4 (the claw portion on the left side of the paper surface). Although the uneven part 42 of 4) is constituted by a plurality of recessed parts 42B recessed from the inclined surface 41, it is not limited to this. For example, both the concave and convex portions 42 of the pair of claws 4 may be configured by only one of the convex portions 42A and the concave portions 42B, or both the convex portions 42A and the concave portions 42B may be formed on the same inclined surface 41. Good.
Further, it is only necessary that a plurality of the convex portions 42A and the concave portions 42B are arranged at intervals from the lower end side to the upper end side of the inclined surface 41, and for example, extend in the width direction (Y-axis direction) of the side wall portion 22. They may be formed as described above, or a plurality of them may be arranged at intervals in the width direction of the side wall portion 22.

  And each claw part 4 shown in FIG. 6 has the several level | step difference 43, and is formed in step shape. The corners and step surfaces of these steps 43 face the upper surface 101 c side of the uppermost sheet-like body 101 </ b> A stacked in the housing portion 2. For this reason, when the uppermost sheet-like body 101 </ b> A is lifted by the suction conveyance means 3, it comes into contact with the corners or step surfaces of these steps 43.

According to the sheet supply apparatus of the present embodiment, the same effects as those of the first embodiment can be obtained.
Further, in the sheet feeding apparatus of the present embodiment, the uppermost sheet-like body 101A in the accommodating portion 2 is lifted by the suction conveyance means 3 and comes into contact with the pair of claw portions 4 and 4, and then the uppermost sheet-like body 101A. Is further increased, the degree to which both end portions of the uppermost sheet-like body 101A are curved (the degree of bending) gradually increases. That is, as compared with the case where the distance between the pair of claws is equal as in the first embodiment, the curved deformation of both ends of the uppermost sheet-like body 101A is slowly performed as the uppermost sheet-like body 101A rises. It will be.

  Therefore, when the uppermost sheet-like body 101A is lifted by the suction conveyance means 3 while another sheet-like body 101B is in close contact with the lower surface of the uppermost sheet-like body 101A, the uppermost sheet-like body 101A and The degree of curvature at both ends of the lower sheet-like body 101B gradually increases. The lower sheet-like body 101B is separated from the uppermost sheet-like body 101A when the minimum degree of curvature necessary for the separation between the two closely-attached sheet-like bodies 101A and 101B is reached. That is, it is possible to minimize the degree of bending of the lower sheet-like body 101B and to prevent the lower sheet-like body 101B from being housed in the housing portion 2 while being curved and deformed.

In the second embodiment, the inclined surface 41, the concavo-convex portion 42, and the step 43 are formed on both the pair of claw portions 4 and 4. However, it is sufficient that the inclined surface 41, the concavo-convex portion 42 and the step 43 are formed on at least one claw portion 4. For example, the other nail | claw part 4 is good also as a shape similar to 1st embodiment.
Further, when the claw portion 4 is configured to have a plurality of steps 43, the step surface of each step 43 is not limited to being parallel or orthogonal to the inner surface 22 a of the side wall portion 22 as illustrated in FIG. 7. For example, you may incline similarly to the inclined surface 41 shown in FIG. Further, when the step 43 has the inclined surface 41, the uneven portion 42 similar to that in FIG. 6 may be formed on the inclined surface 41.

[Third embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG.
The sheet supply apparatus according to this embodiment differs from the sheet supply apparatuses according to the first and second embodiments only in the shapes of the pair of claw portions 4 and 4.
As shown in FIG. 8, the pair of claw portions 4, 4 constituting the sheet feeding device of this embodiment are formed so as to protrude from the inner side surface 22 a of the side wall portion 22, as in the first embodiment. Each claw portion 4 is constituted by a plurality (four in the illustrated example) of protrusions 44 arranged at intervals in the stacking direction of the sheet-like body 101 (Z-axis direction, see FIG. 2 and the like). .
Here, the several protrusion 44 which comprises the same nail | claw part 4 is made into the same protrusion length, and is arranged at equal intervals. Further, the number of protrusions 44 is set to be the same between the pair of claw portions 4 and 4, and the height positions of the protrusions 44 are the same.

According to the sheet supply apparatus of the present embodiment, the same effects as those of the first embodiment can be obtained.
Further, in the sheet supply apparatus of the present embodiment, as the uppermost sheet-like body 101A is raised by the suction conveyance means 3, both end portions of the uppermost sheet-like body 101A are below the stacking direction of the sheet-like bodies 101 ( After contacting and curving the projection 44 (lower projection 44) arranged on the negative side of the Z-axis, it moves upward from the lower projection 44 so that both ends of the uppermost sheet-like body 101A The curved state is released. Further, after the bending state is released, both ends of the uppermost sheet-like body 101A are bent again by another projection 44 (upper projection 44) positioned above the lower projection 44. That is, as the uppermost sheet-like body 101A is lifted by the suction conveyance means 3, the curved state of both ends of the uppermost sheet-like body 101A and the release thereof are repeated, so that both ends of the uppermost sheet-like body 101A vibrate. Will do.
Therefore, when the uppermost sheet-like body 101A is lifted by the suction conveyance means 3 while another sheet-like body 101B (lower sheet-like body 101B) is in close contact with the lower surface of the uppermost sheet-like body 101A. Can more reliably separate the lower sheet-like body 101B from the uppermost sheet-like body 101A by the vibration of the uppermost sheet-like body 101A.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIG.
The sheet supply apparatus according to this embodiment is different from the sheet supply apparatus according to the third embodiment only in the shape of the protrusions 44 constituting the pair of claw portions 4 and 4.
As shown in FIG. 9, the plurality of projections 44 of each claw portion 4 constituting the sheet feeding device of this embodiment are arranged in the stacking direction (Z-axis direction, FIG. 2) of the sheet-like body 101, as in the third embodiment. Etc.) are spaced apart from each other. Further, the plurality of protrusions 44 constituting the same claw portion 4 are arranged at equal intervals. Furthermore, the number of protrusions 44 is set to be the same between the pair of claw portions 4 and 4, and the height positions of the protrusions 44 are the same.
In the present embodiment, among the plurality of protrusions 44 constituting the same claw portion 4, the protrusion 44 (upper protrusion 44) located on the upper side in the Z-axis direction is replaced with the protrusion 44 (lower side) located on the lower side. It protrudes inside the sheet-like body 101 in plan view from the protrusion 44). That is, the protruding length of the upper protrusion 44 protruding from the inner surface 22 a of the side wall portion 22 is set to be longer than the lower protrusion 44.

According to the sheet supply apparatus of the present embodiment, the same effects as those of the third embodiment can be obtained.
Further, in the sheet supply apparatus of the present embodiment, the degree of curvature of both ends of the uppermost sheet-like body 101A by the upper protrusion 44 is greater than the degree of curvature of both ends of the uppermost sheet-like body 101A by the lower protrusion 44. growing. In other words, as the uppermost sheet-like body 101A rises, the amplitude at which both end portions of the uppermost sheet-like body 101A vibrate increases.
Therefore, when the uppermost sheet-like body 101A is lifted by the suction conveyance means 3 while another sheet-like body 101B (lower sheet-like body 101B) is in close contact with the lower surface of the uppermost sheet-like body 101A. Is vibrated each time the uppermost sheet-like body 101A and the lower sheet-like body 101B pass through the protrusions 44 arranged in the vertical direction, but the minimum necessary for the separation between the two closely-contacted sheet-like bodies 101A and 101B At the time when the magnitude of the limit vibration is reached, the lower sheet-like body 101B is separated from the uppermost sheet-like body 101A. In other words, the degree of bending of the lower sheet-like body 101B can be minimized, and the lower sheet-like body 101B can be prevented from being housed in the housing portion while being curved and deformed.

  In the third and fourth embodiments described above, the pair of claw portions 4 and 4 are configured by the plurality of projections 44, but only at least one claw portion 4 is configured by the plurality of projections 44. That's fine. In this case, the other nail | claw part 4 may be formed in the shape shown, for example in 1st, 2nd embodiment.

[Fifth embodiment]
Next, a fifth embodiment of the present invention will be described with reference to FIG.
The sheet supply apparatus according to this embodiment differs from the sheet supply apparatus according to the third embodiment only in the arrangement of the protrusions 44 that constitute the pair of claw portions 4 and 4.
As shown in FIG. 10, the plurality of protrusions 44 of each claw portion 4 constituting the sheet feeding device of this embodiment are arranged in the stacking direction (Z-axis direction, FIG. 2) of the sheet-like body 101, as in the third embodiment. Etc.) are spaced apart from each other. The plurality of protrusions 44 constituting the same claw portion 4 have the same protruding length and are arranged at equal intervals. Furthermore, between the pair of claw portions 4, 4, the number of protrusions 44 and the interval between the protrusions 44 adjacent in the vertical direction are set to be the same.
In the present embodiment, the height positions of the protrusions 44 are shifted from each other between the pair of claw portions 4 and 4. In addition, the code | symbol t1 in FIG. 10 has shown the deviation | shift amount of the protrusion 44 between a pair of nail | claw parts 4 and 4. FIG. Moreover, in this embodiment, the space | interval of several protrusion 44 which comprises the same nail | claw part 4 is set so that it may become equal between a pair of nail | claw parts 4 and 4, and a pair of nail | claw parts 4 and 4 are comprised. A plurality of projections 44 are arranged in a staggered pattern.

According to the sheet supply apparatus of the present embodiment, the same effects as those of the third embodiment can be obtained.
However, in the configuration of this embodiment, as in the third embodiment, as the uppermost sheet-like body 101A is lifted by the suction conveyance means 3, the curved state of both ends of the uppermost sheet-like body 101A and its release are released. Although repeated, the timing of the repeated operation of the bent state and the release thereof is different between one end (one end) and the other end (the other end) of the uppermost sheet-like body 101A. For this reason, compared with the case of 3rd embodiment, the frequency of 101 A of uppermost sheet-like bodies can be made to increase, As a result, lower sheet-like body 101B closely_contact | adhered to 101A of uppermost sheet-like bodies Can be further separated.
The configuration of the fifth embodiment can also be applied to the fourth embodiment described above.

  In addition, in 3rd-5th embodiment mentioned above, although several protrusion 44 which comprises the same nail | claw part 4 is arranged at equal intervals, you may arrange | position at non-uniform intervals, for example. Further, the number of protrusions 44 may be different between the pair of claw portions 4 and 4.

[Sixth embodiment]
Next, a sixth embodiment of the present invention will be described with reference to FIGS.
The sheet feeding apparatus according to this embodiment is mainly different from the sheet feeding apparatus according to the first embodiment in the arrangement of the claw portions 4. 11 and 12, the through hole 101d and the guide pin 5 of the sheet-like body 101 shown in the first embodiment are not described, but for example, have the same configuration as the first embodiment. It may be.
As shown in FIGS. 11 and 12, each claw portion 4 constituting the sheet feeding apparatus 11 of this embodiment protrudes integrally from the inner side surface 22 a of each side wall portion 22, as in the first embodiment. Each claw portion 4 extends in the direction (Y-axis direction) orthogonal to the stacking direction of the sheet-like body 101 and the arrangement direction of the pair of claw portions 4, 4, as in the configuration of the first embodiment. Yes. In the illustrated example, the width dimension (dimension in the Y-axis direction) of each side wall portion 22 and the claw portion 4 formed thereon is set to be longer than the long side length of the sheet-like body 101. For example, the long side length of the sheet-like body 101 may be set substantially equal to or shorter than the long side length.

And in this embodiment, one nail | claw part 4 (1st nail | claw part 4A) is orthogonal to the arrangement direction of a pair of nail | claw parts 4 and 4 by planar view (extension direction of 4 A of 1st claw parts; It is inclined so as to approach the upper surface 101c of the uppermost sheet-like body 101A from one end to the other end in the Y-axis direction). Further, the other claw portion 4B (second claw portion 4B) is inclined so as to move away from the upper surface 101c of the uppermost sheet-like body 101A as it goes from one end to the other end in the extending direction of the second claw portion 4B. ing. That is, each nail | claw part 4 inclines with respect to the bottom wall upper surface 21a of the accommodating part 2, and the upper surface 101c of the uppermost sheet-like body 101A.
And a pair of nail | claw parts 4 and 4 are mutually the same in the middle part of the extending direction of each nail | claw part 4 so that the inclination direction may turn into a mutually reverse direction seeing from the arrangement direction (C direction). It is arranged to be the height of. That is, the pair of claw portions 4 and 4 are arranged so as to cross each other when viewed from the arrangement direction.

The configuration shown in FIGS. 11 and 12 will be described in more detail. The height of the front end in the protruding direction of each side wall 22 becomes higher or lower as it goes from one end to the other end in the width direction of the side wall 22. Each claw part 4 is formed at the tip of each inclined side wall part 22.
Further, the height positions of the lower ends in the inclination direction are equal to each other between the pair of claw portions 4 and 4, and the height positions of the upper ends in the inclination direction are also set to be equal to each other. Further, the inclination angles between the pair of claw portions 4 and 4 are set to be the same, and the dimensions in the extending direction are also set to be the same. Thereby, a pair of nail | claw parts 4 and 4 cross | intersect so that it may become the same height position in the intermediate position of the extension direction. Therefore, the BB cross section in FIG. 11 is the same as that shown in FIG. 2 of the first embodiment.

According to the sheet supply apparatus 11 of the present embodiment, the same effects as those of the first embodiment can be obtained.
Further, according to the sheet supply apparatus 11 of the present embodiment, the uppermost sheet-like body 101A in the accommodating portion 2 is raised by the suction conveyance means 3 and comes into contact with the pair of claw portions 4 and 4, and then the uppermost sheet. When the sheet-like body 101A is further raised, the uppermost sheet-like body 101A is curved in the same manner as in the first embodiment, and both end portions of the uppermost sheet-like body 101A are inclined with respect to the pair of claw portions 4 and 4. So as to correspond to each other. That is, the uppermost sheet-like body 101A is deformed so as to be twisted.
Therefore, even when the uppermost sheet-like body 101A is lifted by the suction conveyance means 3 in a state where another sheet-like body 101B (lower sheet-like body 101B) is in close contact with the lower surface of the uppermost sheet-like body 101A, By the above-described torsional deformation of the uppermost sheet-like body 101A, the lower sheet-like body 101B can be more reliably separated from the uppermost sheet-like body and dropped downward.
The configuration of the sixth embodiment can be applied to any of the second to fifth embodiments described above.

  In the sixth embodiment, the pair of claw portions 4 and 4 are both inclined with respect to the upper surface 101c of the uppermost sheet-like body 101A, but at least from the direction in which the pair of claw portions 4 and 4 are arranged. It only has to be arranged so as to cross each other. Therefore, for example, only one of the pair of claw portions 4 and 4 is arranged to be inclined with respect to the upper surface 101c of the sheet-like body 101A, and the other is arranged to be parallel to the upper surface 101c of the sheet-like body 101A. Also good.

The details of the present invention have been described above with reference to the first to sixth embodiments of the present invention. However, the technical scope of the present invention is not limited thereto, and is appropriately within the scope not departing from the technical idea of the present invention. It can be changed.
For example, the pair of claw portions 4 and 4 are arranged so as to face two peripheral regions corresponding to the long sides of the upper surface 101c of the sheet-like body 101 having a rectangular shape in plan view. As shown to 13 and 14, you may distribute | arrange so that two peripheral areas corresponding to a short side may be opposed. 13 and 14, the pair of side wall portions 22 and 22 forming the claw portion 4 are arranged so as to face the short sides of the stacked sheet-like bodies 101, thereby The sheet-like body 101 is supported from both sides in the long side direction.

  As shown in FIGS. 13 and 14, when the through hole 101 d cannot be formed in the sheet-like body 101, for example, the sheet-like body in the housing portion 2 instead of the guide pin 5 of the above embodiment. What is necessary is just to provide separately a pair of side wall parts 25 and 25 which support 101 from the both sides of the short side direction as a structure of the accommodating part 2. FIG. Further, when the separate side wall portion 25 is provided, the separate side wall portion 25 is provided on the bottom wall upper surface 21a side from the front end in the protruding direction so that the remaining number of the sheet-like bodies 101 in the housing portion 2 can be easily grasped. It is preferable to form the slit 25a which is dented toward.

Further, the claw portion 4 is not limited to be disposed opposite to the peripheral area corresponding to the side (long side / short side) of the upper surface 101c of the sheet-like body 101 having a rectangular shape in plan view, and the suction conveyance unit 3 When the uppermost sheet-like body 101A is taken out from the accommodating portion 2, the upper surface of the uppermost sheet-like body 101A is sandwiched at least in plan view so that both ends of the uppermost sheet-like body 101A are curved by the claw portions 4. A pair may be provided at a position corresponding to the peripheral area of 101c. Therefore, for example, as shown in FIG. 15, the claw portion 4 may be disposed so as to face the peripheral region corresponding to the corner portion of the sheet-like body 101 in the accommodating portion 2 in plan view.
In FIG. 15, two pairs of claw portions 4 are formed, but it is sufficient that only one pair is formed so as to be at least diagonally opposite each other. Further, each side wall portion 22 on which the claw portion 4 is formed is formed so as to face only the long side of the sheet-like body 101 in plan view, but may be formed so as to face only the short side, for example. Alternatively, it may be formed to face both the long side and the short side.

Furthermore, the sheet supply apparatus according to the present invention is not limited to the sheet-like body 101 having a rectangular shape in plan view, but is applied to a sheet-like body having an arbitrary plan view shape such as a circular shape, an elliptical shape, and an arbitrary polygonal shape. Is possible.
In addition, when the planar view shape of the sheet-like body is an arbitrary polygonal shape, all the claw portions 4 are positions corresponding to the sides of the sheet-like body as seen in plan view as shown in FIG. 2 and FIG. Alternatively, as shown in FIG. 15, it may be arranged at a position corresponding to the corner of the sheet-like body 101. For example, as shown in FIG. 16, one claw part 4 corresponds to the side of the sheet-like body. The other claw portion 4 may be disposed at a position corresponding to the corner of the sheet-like body 102. Also in the configuration shown in FIG. 16, the pair of claw portions 4 and 4 are regions (a region to be adsorbed) that are adsorbed by the adsorbing portion 31 on the upper surface 102 c of the uppermost sheet-like body 102 </ b> A in plan view, as in the above embodiment. 102e).

For example, as shown in FIG. 17, when the sheet-like body 103 has a circular shape in plan view or an elliptical shape in plan view, the inner side surfaces 22a of the pair of claw portions 4, 4 and the side wall portions 22, 22 are Although it may be formed in an arc shape extending in the circumferential direction of the peripheral edge of the sheet-like body 103 so as to correspond to the peripheral shape of the sheet-like body 103 in plan view, for example, as shown in FIG. It may be formed in a straight line extending in the tangential direction of the periphery of the body 103. Also in the configuration shown in FIG. 17, the pair of claw portions 4 and 4 are areas (areas to be adsorbed) that are adsorbed to the adsorbing section 31 on the upper surface 103 c of the uppermost sheet-like body 103 </ b> A in plan view, as in the above embodiment. 103e).
In the configuration shown in FIG. 17, similarly to the configuration shown in FIGS. 13 and 14, the movement of the sheet-like body 103 in the direction along the bottom wall upper surface 21 a together with the pair of side wall portions 22 and 22 is restricted. A pair of separate side wall portions 29 are formed.

In the configuration shown in FIG. 16, the sheet-like body 102 laminated on the bottom wall upper surface 21a is formed in a shape that is long in the vertical direction (Y-axis direction) and short in the horizontal direction (X-axis direction) in plan view. Yes. And a pair of side wall parts 22 and 22 and a pair of nail | claw parts 4 and 4 which comprise the accommodating part 2 are distribute | arranged to the both ends of the longitudinal direction (Y-axis direction) of the sheet-like body 102 planarly viewed. Thereby, the pair of side wall portions 22 and 22 regulates the movement of the sheet-like body 102 in the longitudinal direction.
Furthermore, a pair of support pins 27 and 27 projecting upward (Z-axis positive direction) from the bottom wall upper surface 21a are disposed at both ends of the laminated sheet-like body 102 in the short direction (X-axis direction). . Each of the support pins 27 is arranged so as to face the side along the longitudinal direction of the laminated sheet-like body 102. That is, the pair of support pins 27 and 27 support the sheet-like body 102 in the accommodating portion 2 from both sides in the short direction, like the separate side wall portion 25 shown in FIGS. The movement of 102 in the short direction is restricted.

  In the configuration shown in FIG. 16, as in the first embodiment, a plurality of through-holes 102 d are formed in the sheet-like body 102, and each through-hole of the sheet-like body 102 placed on the upper surface of the bottom wall is formed. A plurality of guide pins 5 to be inserted through 102d are formed. However, since the movement of the sheet-like body 102 in the direction along the bottom wall upper surface 21a is regulated by the pair of side wall portions 22 and 22 and the support pins 27 and 27, only one guide pin 5 is formed, for example. It may or may not be formed. Alternatively, a plurality of guide pins 5 may be formed and the support pins 27 may not be formed.

Further, in all the embodiments, the housing portion 2 is conductive. However, it is sufficient that at least one claw portion 4 is conductive and grounded. In addition, if it is not necessary to consider the contact | adherence state of the sheet-like bodies 101-103 by static electricity, the nail | claw part 4 may be formed with an electrically insulating material.
Furthermore, each nail | claw part 4 is not necessarily formed so that it may protrude integrally from the side wall part 22 of the accommodating part 2, but the position which can prevent the sheet-like bodies 101-103 from overlapping like the said embodiment. Therefore, it may be formed separately from the accommodating portion 2. If it demonstrates more concretely, the nail | claw part 4 may be provided in the position spaced apart above the upper end of the side wall part 22, for example.

Moreover, the part with which both ends of 101 A of uppermost sheet-like bodies contact | abut among at least 1 nail | claw part 4 may be comprised with a material with a high friction coefficient like rubber | gum etc., for example. In this case, both end portions of the uppermost sheet-like body 101 </ b> A that contacts the claw portion 4 move intermittently with respect to the claw portion 4 due to frictional force with the claw portion 4. That is, both ends of the uppermost sheet-like body 101A vibrate.
Therefore, when the uppermost sheet-like body 101A is lifted by the suction conveyance means 3 in a state where the uppermost sheet-like body 101A and the lower-side sheet-like body 101B are in close contact with each other, the lower-side sheet-like body 101B is pulled more by the vibration described above. It is possible to reliably separate from the uppermost sheet-like body 101A. Note that when this configuration is applied to the configuration shown in the second embodiment, it is possible to set a particularly long time during which both end portions of the uppermost sheet-like body 101A vibrate, and therefore the lower sheet-like body 101B. This is particularly effective for the separation.

1,11 Sheet supply device 2 Housing 21a Bottom wall top surface (bottom surface)
3 Adsorbing and conveying means 31 Adsorbing portions 4, 4A, 4B Claw portion 42 Uneven portion 43 Step 44 Projection 5 Guide pins 101, 102, 103 Sheet-like bodies 101A, 102A, 103A Top sheet-like body 101B Another sheet-like body (lower Side sheet)
101c, 102c, 103c Upper surface 101d, 102d Through-hole 101e, 102e, 103e Adsorption region

Claims (11)

An accommodating part that can be accommodated in a state in which a plurality of sheet-like bodies having flexibility are stacked in order from the bottom;
The uppermost sheet-like body accommodated on the uppermost sheet-like body accommodated in the accommodation portion has an adsorption portion, and the uppermost sheet-like body is adsorbed on the adsorption portion, and then the uppermost sheet-like body is laminated. Suction conveyance means for moving upward in the direction;
The uppermost sheet-like body is disposed at a position spaced above the uppermost sheet-like body accommodated in the accommodating portion, and as the uppermost sheet-like body rises by the suction conveyance means, A pair of claws for bending the uppermost sheet-like body so that both ends of the upper surface of the upper surface sheet-like body are in contact with both ends sandwiching the region to be adsorbed by the adsorption portion; equipped with a,
The sheet feeding device , wherein the pair of claw portions are arranged so as to intersect each other when viewed from the arrangement direction of the pair of claw portions . The sheet feeding apparatus according to claim 1 , wherein an interval between the pair of claw portions becomes narrower toward an upper side in the stacking direction. The sheet feeding apparatus according to claim 2 , wherein at least one of the pair of claw portions is formed in a step shape having a plurality of steps. 4. The sheet supply according to claim 2 , wherein at least one of the pair of claws has an inclined surface extending inward of the sheet-like body as viewed in plan as it goes upward in the stacking direction. apparatus. The sheet feeding apparatus according to claim 4 , wherein an uneven portion is formed on the inclined surface. 2. The sheet feeding apparatus according to claim 1 , wherein at least one of the pair of claw portions includes a plurality of protrusions arranged at intervals in the stacking direction. 6. projections located on the upper side of the stacking direction of the plurality of protrusions, than the projection positioned on the lower side of the stacking direction, characterized in that protrudes inward in plan view the sheet product The sheet supply apparatus according to 1. Each of the pair of claws is constituted by the plurality of protrusions,
The sheet feeding apparatus according to claim 6 or 7 , wherein height positions of the protrusions are shifted from each other between the pair of claw portions. 9. The sheet feeding apparatus according to claim 1, wherein at least one of the pair of claw portions has conductivity and is grounded. 10. A through-hole penetrating in the thickness direction is formed in the sheet-like body,
A guide pin is provided that extends from the bottom surface of the sheet accommodating portion on which the stacked sheet-like body is placed to above the pair of claws, and is inserted into a through-hole of the sheet-like body. The sheet feeding apparatus according to any one of claims 1 to 9 . The sheet-like body is formed in a polygonal shape in plan view,
At least one of the pair of claw portions, from each of claims 1, characterized in that arranged above the corners of the uppermost sheet product in a plan view of any one of claims 10 Sheet feeding device.

Images