JP5468632B2 - Sheet body supply method and sheet body supply apparatus - Google Patents

Description

  The present invention relates to a method and apparatus for supplying a sheet used for a laminated battery.

  In the manufacturing process of the laminated structure type battery, the sheet-like positive electrode foil and the negative electrode foil are alternately laminated via the sheet-like separator. Each of the positive electrode foil and the negative electrode foil is configured by applying an active material to a predetermined metal electrode foil main body. The separator is made of, for example, an electrically insulating porous resin film.

  When manufacturing a laminated battery, these positive electrode foil, negative electrode foil, and separator are each beforehand accumulate | stored on the separate pallet. Then, the positive foil, the negative foil, and the separator on each pallet are sequentially adsorbed by an adsorption pad or the like, and are alternately stacked at a predetermined stacking position.

  Of the materials constituting the laminated battery, for example, the separator is originally wound in a roll shape. That is, a belt-like sheet wound in a roll shape is drawn out, the leading end of the drawn belt-like sheet is cut into a predetermined length separator (= “sheet body”), and the sheet body is sequentially supplied onto the pallet. Is accumulated. 2. Description of the Related Art Conventionally, as the above-described supply method, a technique is known in which a leading end portion of a belt-like sheet is sucked and pulled, cut into a predetermined length, and accumulated on a pallet (for example, see Patent Document 1).

  In the technique described in Patent Document 1, the “first conveying member” and the “second conveying member” located on the upper side of the belt-like sheet and the “drawer member” located on the lower side of the belt-like sheet are used. It is said.

Then, the “drawer member” that adsorbs the roll-like belt-like sheet to the upper surface thereof with negative pressure is slid to pull out the belt-like sheet tip [step (1)]
Lower the “first conveying member” and sandwich the belt-like sheet with the “drawing member” [step (2)],
Cutting the sheet body from the belt-like sheet [step (3)],
The leading end of the belt-like sheet sandwiched between the “drawing member” is adsorbed to the lower surface of the belt-like sheet by negative pressure, and the “first conveying member” is raised and waited [step (4)],
Slide the “drawer member” adsorbed on the upper surface of the cut sheet body to a position immediately below the “second transport member” disposed away from the “first transport member” [step (5)],
The “second conveying member” is lowered and the sheet body on the “drawing member” is moved to the “second conveying member” under suction by negative pressure [step (6)],
While the “second conveying member” moves up and down and slides to convey the sheet body to the pallet, the “drawer member” is slid below the “first conveying member” [steps (7), (8) ],
The “first conveying member” is lowered, and the leading end of the belt-like sheet is adsorbed to the upper surface of the “drawing member” by negative pressure, and the belt-like sheet is transferred from the “first conveying member” to the “drawing member” [step ( 9), (10)],
A series of steps of [step (11) = step (1)] is repeatedly executed by returning the “second conveying member” to the position of step (5) and sliding the “drawer member” to pull out the leading end of the belt-like sheet. The

Japanese Patent No. 4726215

  However, the technique of Patent Document 1 requires at least three members as members for pulling out the belt-like sheet or moving the sheet body, which may lead to complication of the apparatus. In addition, regarding the “drawer member”, the operation [step (1)] of sliding the “drawer member” and the operation of sliding further to the position immediately below the “second transport member” [step (5)] are performed. Need to move forward. In other words, the “drawing member” needs to be moved forward twice by the time the “second conveying member” adsorbs the sheet member, which causes a loss in terms of supply speed.

  SUMMARY An advantage of some aspects of the invention is that it provides a sheet body supply method and a supply apparatus that can suppress the complexity of the apparatus and contribute to an improvement in sheet sheet supply speed. I am trying.

  In the following, each means suitable for solving the above-described object will be described in terms of items. In addition, the effect specific to the means to respond | corresponds as needed is added.

Means 1. A sheet body supply method for cutting a belt-shaped sheet wound into a roll into a predetermined length to form a sheet body, and transporting and supplying the sheet body to a predetermined supply position,
In a state where the lower surface of the belt-like sheet delivered from a fixed suction member fixed at a predetermined position downstream of the wound belt-like sheet is adsorbed by the drawer member, the drawer member is A step of pulling out the belt-like sheet by moving to a delivery position downstream of the fixed suction means;
Clamping the belt-like sheet pulled out to the delivery position between the conveying member and the withdrawal member at the delivery position;
The belt-like sheet is cut by a cutter on the upstream side of the delivery position in a state where the belt-like sheet is sandwiched between the conveying member and the drawing member, and a sheet body is formed. Adsorbing the upper surface of the belt-like sheet,
While the upper surface of the sheet body is adsorbed by the transport member, the transport member is moved to the predetermined supply position, the sheet body is supplied to the predetermined supply position, and the drawing member is Separating the body and the transport member and moving the fixed suction means downward;
A step of returning the conveying member separated from the sheet body to the delivery position, and delivering the belt-like sheet from the fixed suction member to the drawer member by sucking a lower surface of the belt-like sheet by the drawing member; A sheet body supply method comprising:

  According to the means 1, the lower surface of the belt-like sheet delivered from the fixed suction member fixed at a predetermined position downstream of the rolled belt-like sheet is sucked by the drawing member. The drawer member is moved to the delivery position on the downstream side of the fixed suction means. Thereby, the belt-like sheet is pulled out. Next, the belt-like sheet pulled out to the delivery position is sandwiched between the conveying member and the withdrawal member at the delivery position. Then, in the sandwiched state, the belt-like sheet is cut with a cutter on the upstream side of the delivery position, so that a sheet body is obtained. When cutting, the upper surface of the belt-like sheet is adsorbed by the fixed adsorbing member. Subsequently, in a state where the upper surface of the sheet body is adsorbed by the transport member, the transport member is moved to a predetermined supply position, and the sheet body is supplied to the predetermined supply position. At the same time, the drawing member is moved away from the sheet member and the conveying member, and is moved below the fixed suction means. Thereafter, the conveying member separated from the sheet body is returned to the delivery position, and the lower surface of the belt-like sheet is sucked by the drawing member, so that the belt-like sheet is delivered from the fixed suction member to the drawing member. By repeating these series of steps, sheet bodies having a predetermined length are stacked at a predetermined supply position. Therefore, according to the means 1, as the member for moving the sheet body, two members of “drawer member” and “conveyance member” may be used, and as a result, complication of the entire apparatus can be suppressed. . Further, regarding the “drawer member”, it is not necessary to further move forward after the cutting by the cutter. That is, the sheet body can be supplied with higher efficiency than the conventional technique in which the “drawing member” has to be moved forward twice before the “second conveying member” adsorbs the sheet body. As a result, it is possible to contribute to improving the supply speed of the sheet body.

  Mean 2. 2. The sheet supply method according to claim 1, wherein at the time of cutting, the suction by the drawing member is released and the suction by the conveying member is started.

  According to the means 2, at the time of cutting, the suction by the drawing member is released, and the suction by the conveying member is started. For this reason, the subsequent movement of the sheet member by the conveying member can be performed more smoothly.

  Note that the release of the suction by the drawing member and the start of the suction by the transport member do not necessarily have to be simultaneous. In addition, “when cutting” may include a period in which the conveying member, the drawing member, and the belt-like sheet (sheet body) are sandwiched, as well as when cutting.

  Means 3. In the step of transferring the belt-like sheet from the fixed suction member to the drawer member, the belt-like sheet is sandwiched between the fixed suction member and the drawer member, and the suction by the fixed suction member is released during the sandwiching. The sheet supply method according to claim 1 or 2, wherein suction by the drawing member is started.

  According to the means 3, when the belt-like sheet is delivered, the belt-like sheet is sandwiched between the fixed suction member and the drawing member. Then, during the clamping, the suction by the fixed suction member is released and the suction by the drawing member is started. Accordingly, the strip sheet can be pulled out more smoothly by the subsequent drawing member.

  Further, as in the following means 4 and 5, it can be embodied in a sheet supply apparatus.

  Means 4. A sheet body supply apparatus used in the sheet body supply method according to any one of means 1 to 3, comprising the fixed suction means, a drawing member, a cutter, and a conveying member.

Means 5. In a sheet body supply apparatus for cutting a belt-shaped sheet wound into a roll into a predetermined length to form a sheet body, and transporting and supplying the sheet body to a predetermined supply position,
A fixed adsorbing member fixed at a predetermined position downstream of the wound belt-shaped sheet original and capable of adsorbing the upper surface of the belt-shaped sheet;
A delivery member downstream of a fixed position of the fixed suction member, and a transport member provided so as to be movable between the supply positions, and capable of sucking the upper surface of the belt-like sheet and the cut sheet body;
A lower position of the fixed adsorbing member, and a drawing member provided so as to be movable between the delivery positions and capable of adsorbing the lower surface of the belt-like sheet;
A cutter that is provided between the fixed position of the fixed suction member and the delivery position, and is capable of cutting the belt-like sheet into a sheet body in a state where the belt-like sheet is sandwiched between the conveying member and the drawing member; An apparatus for supplying a sheet body, comprising:

  According to the means 4 and 5, the effect by the said means 1 etc. is realizable as a sheet | seat supply apparatus.

It is a schematic block diagram which shows the supply apparatus of the sheet | seat body in one Embodiment. It is a perspective view which shows the concept of a laminated body. (A)-(c) is a schematic explanatory drawing which shows the supply procedure of a sheet | seat body. (A)-(e) is a schematic explanatory drawing which shows the supply procedure of a sheet | seat body.

  Hereinafter, an embodiment will be described with reference to the drawings.

  As shown in FIG. 2, the laminated body 4 which comprises a laminated battery is laminated | stacked so that the negative electrode foil 1, the separator 2, the positive electrode foil 3, and the separator 2 may be repeatedly piled up in this order from the bottom ( Of course, the positive electrode foil 3 may be located in the lowermost layer, and the separator 2, the negative electrode foil 1, the separator 2, the positive electrode foil 3,. You may). The negative electrode foil 1 and the positive electrode foil 3 are configured by applying and forming an active material on both front and back surfaces of an electrode foil main body made of a metal foil, and one side edge portion of the uncoated portion 1A where the active material is not applied. , 3A. In addition, the electrode foil main body of the negative electrode foil 1 is comprised with copper, and the electrode foil main body of the positive electrode foil 3 is comprised with aluminum. Further, hereinafter, when it is not necessary to distinguish between positive and negative, the negative electrode foil 1 and the positive electrode foil 3 may be collectively referred to as “electrode foil”.

  The separator 2 is composed of an electrically insulating sheet-like porous resin film, and has a rectangular shape that is slightly larger than the planar rectangular coated portions of the negative electrode foil 1 and the positive electrode foil 3. In an appropriate layered state, the coated portions of the positive foil 3 and the negative foil 1 are completely covered (not protruding) by the separator 2, and the protruding portions of the positive foil 3 and the negative foil 1, that is, Only the uncoated portions 1A and 3A protrude from the separator 2 at different positions. Each of the uncoated portions 1A and 3A corresponds to a negative electrode tab and a positive electrode tab, and is a region electrically connected to the negative electrode and the positive electrode of the electrode terminal inside the laminated battery.

  In order to obtain the laminated body 4, a separator supply stage, an electrode foil supply stage, a lamination stage, and a laminating apparatus (all not shown) including suction moving means are used. On the separator supply stage and the electrode foil supply stage, the separator 2 and the electrode foil respectively stored in separate positions in advance are guided, for example, one by one by a supply means (not shown) at every lamination. ing. Then, the separator 2 guided on the separator supply stage and the negative foil 1 (positive foil 3) guided on the electrode foil supply stage are alternately adsorbed one by one and supplied onto the lamination stage and sequentially laminated. It is. Since these configurations are well known, further explanation is omitted here.

  As described above, the electrode foil and the separator 2 are accumulated in advance before the lamination. Next, focusing on the separator 2 as a sheet body, a supply device for storing the separator 2 will be described.

  FIG. 1 is a schematic configuration diagram showing a supply device 10 for supplying and accumulating a separator 2 as a sheet body on a predetermined pallet 50. As shown in the figure, a belt-like sheet BS as a raw material for the separator 2 is supported in a state of being wound in a roll shape on the most upstream side. The supply device 10 includes a plurality of rollers R1 and R2 for passing the belt-like sheet BS along a predetermined conveyance path and applying a predetermined tension to the belt-like sheet BS, and also includes a fixed suction unit 11 and a drawer. A member 12, a cutter 13, and a conveying member 14 are provided. It is assumed that the pallet 50 is placed at the target supply position SP.

  The fixed adsorbing means 11 is installed in a fixed state on the relatively upstream side of the conveying path of the belt-like sheet BS, and can adsorb the upper surface of the belt-like sheet BS via an adsorption portion 11a made of a porous body.

  The drawing member 12 is provided so as to be movable in the vertical direction and the horizontal direction, and between the lower position of the fixed suction member 11 and the delivery position PP on the downstream side of the fixed position of the fixed suction member 11. It can move back and forth. The drawing member 12 includes an adsorption portion 12a that can adsorb the lower surface of the belt-like sheet BS on the upper surface thereof.

  The conveying member 14 is provided so as to be movable in the vertical direction and the horizontal direction, and is capable of reciprocating between the delivery position PP and the supply position SP. The conveying member 14 includes an adsorption portion 14a that can adsorb the belt-like sheet BS and the upper surface of the cut separator 2 on its lower surface.

  A cutter 13 is provided between the fixed position of the fixed suction member 11 and the delivery position PP to cut the belt-like sheet BS into a separator 2 having a predetermined length.

  In addition, although illustration is abbreviate | omitted, the suction path is formed in each member 11,12,14 so that it may connect with each adsorption | suction part 11a, 12a, 14a, and it is connected so that it may connect with each suction path. The intake pipe and the vacuum pump are connected. Further, a valve is provided in the middle of the intake pipe so that the adsorption state and the adsorption release state in each of the adsorption portions 11a, 12a, and 14a can be switched. Further, the above-described drawing member 12, transport member 14, and cutter 13 are moved by an actuator (not shown). The vacuum pumps and valves including each actuator are controlled by a control device (not shown).

  Now, the schematic configuration of the supply device 10 is as described above. Hereinafter, a procedure for supplying the sheet S onto a predetermined supply position SP (pallet 50) using the supply device 10 will be described. To do.

  First, as shown in FIG. 3 (a), in the state where the lower surface of the leading end portion of the belt-like sheet BS delivered from the fixed adsorption member 11 is adsorbed by the adsorption portion 12a of the extraction member 12, the extraction member 12 is moved. The belt-like sheet BS is pulled out by being moved to the delivery position PP downstream of the fixed suction means 11.

  Next, as shown in FIG. 3B, the leading end portion of the belt-like sheet BS drawn to the delivery position PP is moved by moving the drawing member 12 upward, so that the conveying member 14 and the drawing member 12 at the delivery position PP are used. And pinch with.

  And as shown in FIG.3 (c), in the state which pinched | interposed the strip | belt-shaped sheet | seat BS with the conveyance member 14 and the drawing-out member 12, the predetermined location of the upstream from the said delivery position PP is cut | disconnected with the cutter 13, The separator 2 as a sheet body is obtained. However, the upper surface of the belt-like sheet BS is adsorbed by the fixed adsorbing member 11 after cutting and after the cutting. Owing to the adsorption, dropping of the leading end portion of the belt-like sheet BS is suppressed. In the present embodiment, at the time of the cutting, the suction by the suction portion 12a of the drawing member 12 is released, and the suction by the suction portion 14a of the transport member 14 is started.

  Next, as shown in FIGS. 4A, 4 </ b> B, 4 </ b> C, and 4 </ b> D, the transport member 14 is supplied with the upper surface of the separator 2 being sucked by the suction portion 14 a of the transport member 14. The separator 2 is supplied to the pallet 50 at the supply position SP. At the time of supply, the suction at the suction portion 14a is released when the conveying member 14 reaches a predetermined height on the pallet 50.

  At the same time, as shown in FIGS. 4A, 4 </ b> B, and 4 </ b> C, the drawing member 12 is moved away from the separator 2 and the conveying member 14 and moved below the fixed suction unit 11.

  Then, as shown in FIGS. 4D and 4E, the transport member 14 separated from the separator 2 is returned to the delivery position PP, and the lower surface of the leading end portion of the belt-like sheet BS is sucked by the drawing member 12. Then, the belt-like sheet BS is delivered from the suction portion 11a of the fixed suction member 11 to the suction portion 12a of the drawing member 12. In the present embodiment, when the belt-like sheet BS is delivered, while the belt-like sheet BS is sandwiched between the fixed suction member 11 and the drawing member 12, the suction by the suction portion 12a of the fixed suction member 11 is released. Suction by the suction portion 12a of the drawing member 12 is started. Thus, by repeating the above procedure, the separator 2 having a predetermined length is accumulated on the pallet 50.

  As described in detail above, according to the present embodiment, two members, that is, the drawing member 12 and the conveying member 14 may be used as members for moving the separator 2 (band-like sheet BS). Therefore, compared with the prior art which conventionally required three moving members, the complication of the whole apparatus can be suppressed. Further, after the cutting by the cutter 13, the drawing member 12 need not be further advanced. That is, the separator 2 can be supplied with higher efficiency than the conventional technique in which the “drawer member” needs to be moved forward twice by the time the “second conveying member” adsorbs the sheet body. As a result, the supply speed of the separator 2 can be improved.

  Further, according to the present embodiment, the separator 2 (band-like sheet BS) can be smoothly delivered by appropriately performing the suction and suction release of the suction portions 11a, 12a, and 14a as appropriate.

  In addition, you may implement as follows, for example, without being limited to the description content of embodiment mentioned above.

  (A) In the said embodiment, although the separator 2 is illustrated as a sheet body, it is good also as materializing the negative electrode foil 1 and the positive electrode foil 3 as a sheet body.

  (B) Moreover, the supply method of the negative electrode foil 1, the positive electrode foil 3, and the separator 2 to a lamination | stacking stage is not necessarily limited to the method of the said embodiment. For example, a plurality of transfer devices are prepared corresponding to the positive electrode foil 3, the negative electrode foil 1, and the separator 2, and the positive electrode foil 3 and the negative electrode are disposed at a predetermined stacking position (lamination stage 13) using each of the transfer devices. It is good also as laminating | stacking the foil 1 and the separator 2 alternately.

(C) When supplying the separator 2 to the pallet 50, the separator 2 may be pressed by a pressing means so as to restrict the movement of the separator 2.

  DESCRIPTION OF SYMBOLS 1 ... Negative electrode foil, 2 ... Separator as a sheet | seat body, 3 ... Positive electrode foil, 4 ... Laminated body, 10 ... Supply apparatus, 11 ... Fixed adsorption means, 12 ... Extraction member, 13 ... Cutter, 14 ... Conveyance member.

Claims (5)

A sheet body supply method for cutting a belt-shaped sheet wound into a roll into a predetermined length to form a sheet body, and transporting and supplying the sheet body to a predetermined supply position,
In a state where the lower surface of the belt-like sheet delivered from a fixed suction member fixed at a predetermined position downstream of the wound belt-like sheet is adsorbed by the drawer member, the drawer member is A step of pulling out the belt-like sheet by moving to a delivery position downstream of the fixed suction means;
Clamping the belt-like sheet pulled out to the delivery position between the conveying member and the withdrawal member at the delivery position;
The belt-like sheet is cut by a cutter on the upstream side of the delivery position in a state where the belt-like sheet is sandwiched between the conveying member and the drawing member, and a sheet body is formed. Adsorbing the upper surface of the belt-like sheet,
While the upper surface of the sheet body is adsorbed by the transport member, the transport member is moved to the predetermined supply position, the sheet body is supplied to the predetermined supply position, and the drawing member is Separating the body and the transport member and moving the fixed suction means downward;
A step of returning the conveying member separated from the sheet body to the delivery position, and delivering the belt-like sheet from the fixed suction member to the drawer member by sucking a lower surface of the belt-like sheet by the drawing member; A sheet body supply method comprising:   2. The sheet supply method according to claim 1, wherein at the time of the cutting, the suction by the drawing member is released and the suction by the conveying member is started.   In the step of transferring the belt-like sheet from the fixed suction member to the drawer member, the belt-like sheet is sandwiched between the fixed suction member and the drawer member, and the suction by the fixed suction member is released during the sandwiching. 3. The sheet supply method according to claim 1, wherein the suction by the drawing member is started.   The sheet body supply apparatus used in the sheet body supply method according to any one of claims 1 to 3, comprising the fixed suction means, a drawing member, a cutter, and a conveying member. In a sheet body supply apparatus for cutting a belt-shaped sheet wound into a roll into a predetermined length to form a sheet body, and transporting and supplying the sheet body to a predetermined supply position,
A fixed adsorbing member fixed at a predetermined position downstream of the wound belt-shaped sheet original and capable of adsorbing the upper surface of the belt-shaped sheet;
A delivery member downstream of a fixed position of the fixed suction member, and a transport member provided so as to be movable between the supply positions, and capable of sucking the upper surface of the belt-like sheet and the cut sheet body;
A lower position of the fixed adsorbing member, and a drawing member provided so as to be movable between the delivery positions and capable of adsorbing the lower surface of the belt-like sheet;
A cutter that is provided between the fixed position of the fixed suction member and the delivery position, and is capable of cutting the belt-like sheet into a sheet body in a state where the belt-like sheet is sandwiched between the conveying member and the drawing member; An apparatus for supplying a sheet body, comprising:

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