JP3940085B2 - Pressure roller moving mechanism in winding device - Google Patents

Description

この演算式（４），（５），（６）及び前記各種の寸法条件を制御装置３１の記録媒体に予め記録し、上記の演算式（３），（５），（６）により求められた移動量Ｘ（θ）に基づいて前記Ｘ軸モータＭ１９を数値制御するようにしている。
【００３６】
そして、Ｘ軸モータ制御部３６及びＹ軸モータ制御部３７により移動量Ｘ（θ）、Ｙ（θ）の演算式によって演算された演算値に基づいてＸ軸モータＭ１９及びＹ軸モータＭ１７が数値制御され、加圧ローラ１４による巻芯１１上の電極シート１２の押圧動作が適正に行われる。
【００３７】
次に、前記のように構成された巻取り装置の動作を説明する。
図１において前記巻芯１１が巻取り開始位置から旋回を開始すると、巻芯１１の外周面に電極シート１２が巻き取られて、シート巻取体が形成される。この巻取り動作の開始に先立って、電極シート１２の先端部の端縁が図示しないテープ接着装置により接着されて巻芯１１の表面に仮止めされる。その後に、Ｘ軸モータＭ１９が作動されて、加圧ローラ１４が図１に示す開始位置（実線の巻芯１１に接する位置）に移動される。
【００３８】
この電極シート１２の巻取り開始位置から巻芯１１が図１において、時計回り方向に１８０°だけ旋回される間に、加圧ローラ１４はＸ軸方向に一往復動されるとともに、Ｙ軸方向にも一往復動される。この加圧ローラ１４のＸ軸方向及びＹ軸方向の位置制御により巻芯１１に対する加圧ローラ１４の押圧動作が適正に行われる。
【００３９】
前記巻芯１１に対する電極シート１２の巻き付け動作が開始されて巻芯１１が数回旋回されると、巻芯１１に対する電極シート１２の巻付け状態、つまり巻芯１１と電極シート１２の連結が確実になるとともに、巻芯１１に対する電極シート１２の巻き付け状態が加圧ローラ１４の加圧動作により安定化される。このため加圧ローラ１４が退避位置に移動される。
【００４０】
前記巻芯１１に対する電極シート１２の所定量の巻取り動作が終了すると、前記電極シート１２は図示しない切断機構によって切断され、その切断端部が前記加圧ローラ１４によって巻芯１１側に所定の圧力で押圧され、切断端部がシート巻取体の外表面に巻き付けられる。
【００４１】
電極シート１２の切断端部の加圧ローラ１４による巻き付け動作の際には、シート巻取体の厚み寸法を考慮して、加圧ローラ１４の原点位置への移動が行われる。なお、電極シート１２の切断端部の巻き付け処理動作においても、電極シート１２の先端部の巻き付け動作と同様に加圧ローラ１４のＸ軸方向及びＹ軸方向の位置制御が行われる。この場合には、電極シート１２の厚さ寸法ｔｓと巻き付け数との演算から加圧ローラ１４のＸ軸方向或いはＹ軸方向の位置補正を加えた位置制御を行う。
【００４２】
なお、この後には図示しないテープ貼り付け装置によりテープが電極シート１２の切断端部に接着され、一回のシート巻取体の巻取り作業が終了する。
上記実施形態の巻取り装置によれば、以下のような特徴を得ることができる。
【００４３】
（１）上記実施形態では、前記制御装置３１に前述した各種の条件及び演算式（１）〜（６）等の必要なデータを予め格納しておき、それらによる演算値に基づいて加圧ローラ１４の位置をＸ軸方向及びＹ軸方向に数値制御により移動するようにした。このため、巻芯１１の旋回角θが０°〜３０°の間に巻芯１１と加圧ローラ１４の接触点を支持部１１ａの始端Ｐ１に移動し、前記巻芯１１が旋回角θで３０°〜１５０°旋回する間に支持部１１ａの半円孤状の外周面の始端Ｐ１から終端Ｐ２まで移動する。その後、前記巻芯１１が旋回角θで１５０°〜１８０°旋回する間に支持部１１ａの終端Ｐ２から原点位置まで移動する。従って、巻芯１１の支持部１１ａに対する加圧ローラ１４の接触点の移動速度（加速度）が従来の加圧ローラにおける移動速度と比較して緩やかとなり、電極シート１２を巻芯１１の表面に適正に押圧することができ、巻芯１１に対する電極シート１２の巻き付け動作を円滑かつ確実に行うことができる。
【００４４】
さらに、詳述すると、従来では旋回角θが３０°で支持部１１ａを乗り越えなければならなかったのに対し、前記実施形態では１２０°で乗り越えればよいので、加圧ローラ１４の巻芯１１に対する接触点の移動速度が約四分の一の速度となる。
【００４５】
（２）上記実施形態では、巻芯１１の支持部１１ａの外周面に対する加圧ローラ１４の接触点の移動速度が緩やかとなるため、それだけ巻芯１１の旋回速度を高めて巻芯１１に対する電極シート１２の巻き付け開始動作を迅速に行うことができる。又、電極シート１２の全行程に亘って加圧ローラ１４を用いる場合にも巻芯１１の旋回速度を減速する必要がなく、電極シート１２の巻取り状態を安定化することができる。
【００４６】
（３）上記実施形態では、前記操作パネル３８を用いて加圧ローラ１４のＸ軸方向及びＹ軸方向の移動量の演算式（１）〜（６）を巻芯１１の形状或いは寸法などの各種の条件に応じて変更可能にした。このため、巻芯１１の形状寸法が変更されても、Ｘ軸移動機構及びＹ軸移動機構を変更することなく加圧ローラ１４の位置制御動作を適正に行うことができ、段取り換えをなくして作業能率を向上することができる。
【００４７】
なお、本実施形態は以下のように変更してもよい。
【００４８】
○ 実施形態においては電極シートの巻取り装置に具体化したが、これを各種のシートの巻取り装置として具体化することもできる。
○ 前記実施形態においては、前記巻芯１１の巻取り開始位置を図１に示すように設定したが、この巻取り開始位置は任意に設定することが可能である。この場合には各種の条件変更に基づいて、前述した演算式（１）〜（６）を変更する必要がある。
【００４９】
○ 制御装置３１の記録媒体に対し、形状の異なる巻芯１１のそれぞれに対する各種条件及び演算式を格納しておき、巻芯１１の変更に応じて上記各種の演算式を選択的に用いるようにしてもよい。
【００５０】
○ 前記Ｘ軸案内部材１９及びＸ軸モータＭ１９を省略するとともに、加圧ローラ１４をＸ軸方向前方に向かって例えばエアシリンダ等の弾性支持機構により弾性的に支持し、この加圧ローラ１４を巻芯１１の表面に押圧するようにしてもよい。この場合には巻芯１１の旋回運動によって、加圧ローラ１４が付勢力に対抗してＸ軸方向に押動される。
【００５１】
○ 加圧ローラ１４のＹ軸移動機構を図示しないがレバー・リンク機構或いはカム機構によって構成し、前記本実施形態或いは上述した別例の構成にしてもよい。
【００５２】
この別例では巻芯の外形形状が変更された場合に段取り替えが、必要になるが、巻芯に対し加圧ローラによりシートを適正な押圧力で加圧することができ、巻芯に対するシートの巻き付け動作を適正に行うことができるとともに、巻芯の破損を防止することができる。
【００５３】
【発明の効果】
以上詳述したように、請求項１に記載の発明は、巻芯に対し加圧ローラによりシートを適正な押圧力で加圧することができ、巻芯に対するシートの巻き付け動作を適正に行うことができるとともに、巻芯の破損を防止することができる。
【００５４】
又、請求項１に記載の発明は、巻芯の外形形状が変更されても加圧ローラのＹ軸移動機構を変更することなく巻芯へのシートの加圧を適正に行うことができる。
【００５６】
請求項２に記載の発明は、上記の効果に加えて、Ｘ軸移動機構の構成を簡素化して製造及び組み付け作業を容易に行いコストの低減を図ることができる。
請求項３に記載の発明は、請求項１に記載の発明の効果に加えて、巻芯の外形形状が変更されても加圧ローラのＸ軸移動機構を変更することなく巻芯へのシートの加圧を適正に行うことができる。
【００５７】
請求項４に記載の発明は、請求項２又は３に記載の発明の効果に加えて、加圧ローラは巻芯に対しシートを適正な押圧力で加圧することができ、シートの巻付状態によっても柔軟に動作して安定した巻付け動作を行うことができる。
【００５９】
請求項５に記載の発明は、請求項１〜４のいずれかに記載の発明の効果に加えて、巻芯の外形形状が変更されても加圧ローラのＸ軸移動機構及びＹ軸移動機構を変更することなく巻芯へのシートの加圧を適正に行うことができる。
【図面の簡単な説明】
【図１】 本発明の巻取り装置における電極シートの加圧ローラの押圧動作を説明するための図。
【図２】 加圧ローラの移動機構を示す正面図。
【図３】 制御装置を示すブロック回路図。
【図４】 従来の巻芯に対する加圧ローラの加圧状態を示す正面図。
【図５】 従来の巻芯に対する加圧ローラの加圧状態を示す正面図。
【符号の説明】
Ｘ（θ），Ｙ（θ）…移動量、Ｏ_１…旋回中心、Ｏ_２…回転中心、１１…巻芯、１１ａ…支持部、１４…加圧ローラ、２０…Ｘ軸移動体、２５…付勢手段としてのバネ、３１…制御装置。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mechanism for moving a pressure roller in a winding device that can handle a non-cylindrical core such as a flat core or a square core.
[0002]
[Prior art]
Conventionally, the following has been proposed as a two-point support winding device having a flat core. As shown in FIG. 4 , the winding device is configured to turn a flat winding core 11 having a pair of support portions 11a at a predetermined position by a servo motor (not shown) at a predetermined turning speed. A pair of left and right nip rollers 13 sandwich the electrode sheet 12 at a predetermined position above the core 11 and supply it to the core 11. The electrode sheet 12 is formed by laminating positive and negative electrode sheets 12 a and 12 b and separators 12 c and 12 d by a nip roller 13.
[0003]
When starting the winding operation of the electrode sheet 12 with respect to the core 11, the electrode sheet 12 is pressed by the pressure roller 14 with the tip of the electrode sheet 12 suspended along the right side surface of the core 11. Is pressed against the right side surface of the core 11. When the core 11 is turned clockwise in FIG. 4 in this state, the tip of the electrode sheet 12 is wound around the surface of the core 11, the electrode sheet 12 is connected to the core 11, and the pressure roller 14 is released. However, the electrode sheet 12 can be wound.
[0004]
The pressure roller 14 is reciprocated in the X-axis direction by a lever / link mechanism (not shown) in synchronization with the revolving motion of the core 11.
[0005]
[Problems to be solved by the invention]
However the above in the conventional winding apparatus, when the pivot angle θ from the winding start position of the winding core 11 in the vertical state indicated by the solid line in FIG. 4 becomes near to 75 ° as shown in Figure 5, the semicircular The pressure roller 14 is brought into contact with the starting end P1 of the support portion 11a. When the turning angle θ reaches 105 °, the pressure roller 14 is brought into contact with the terminal end P2 of the support portion 11a. Therefore, the semicircular arc-shaped portion of the support portion 11a must be overcome within a narrow range of about 30 ° in which the turning angle θ is approximately 75 ° to 105 °, and X of the contact point of the pressure roller 14 with respect to the core 11 The moving speed (acceleration) to the front or rear of the shaft becomes very fast, and there is a problem that proper position control operation of the pressure roller 14 becomes difficult. For this reason, when the turning angle θ of the winding core 11 is around 75 ° and around 115 °, the pressing force of the pressure roller 14 against the winding core 11 becomes difficult to act properly, and the clamping state of the electrode sheet 12 becomes loose and the electrode This was a cause of poor winding of the sheet 12. In order to secure the pressing force, when the lever / link mechanism of the pressure roller 14 is set to be strong in advance, the core 11 is strongly pressed by the pressure roller 14, so that the core 11 is deformed or broken. There was a fear.
[0006]
Furthermore, since the conventional winding device has a very high moving speed (acceleration) of the contact point of the pressure roller with respect to the winding core, if the turning speed of the winding core 11 is increased, the winding failure of the electrode sheet 12 occurs. There is also a problem that the winding speed must be low.
[0007]
Further, when the outer shape of the core 11 is changed, there is a problem that the lever / link mechanism for operating the pressure roller 14 must be replaced with another. Producing a plurality of types of lever / link mechanisms is not only expensive, but also requires storage management of the lever / link mechanisms, which is very troublesome.
[0008]
The main object of the present invention is to solve the above-mentioned problems in the prior art and to press the sheet with an appropriate pressing force against the winding core with an appropriate pressing force. Another object of the present invention is to provide a mechanism for moving the pressure roller in the winding device that can be performed at the same time and can prevent breakage of the winding core.
[0009]
In addition to the above object, another object of the present invention is to add a sheet to the core by the pressure roller without changing the moving mechanism (hardware) of the pressure roller even if the outer shape of the core is changed. It is an object of the present invention to provide a pressure roller moving mechanism in a winding device that can appropriately perform pressure.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a winding core formed in a flat shape having two support portions is swung so that the winding speed is constant, and the outer surface of the winding core is the sheet winding, the winding apparatus having a pressure roller which is adapted to press the sheet on the winding core side by the pressure roller during its winding operation,
The pressurizing roller presses the winding core, that is, an X-axis moving mechanism that reciprocates in the X-axis direction, and a Y-axis moving mechanism that reciprocates in the Y-axis direction orthogonal to the X-axis direction. The pressure roller is configured to be movable in two axial directions, and the Y-axis moving mechanism is calculated based on an arithmetic expression for calculating the amount of movement in the Y-axis direction recorded in advance on the recording medium of the control device. It is configured to be numerically controlled by the calculated value, and the contact point between the winding core and the pressure roller when the turning angle θ of the winding core is between 0 ° and 30 ° by the Y-axis moving mechanism and the X-axis moving mechanism. Is moved from the origin position corresponding to the center O1 of the winding core to the starting end of the semicircular arc-shaped outer peripheral surface of the supporting portion, and while the winding core is swiveled at a turning angle θ of 30 ° to 150 °, Move from the start to the end of the semicircular arc-shaped outer peripheral surface, and then the winding core turns The From the end of the support portion and the subject matter to be configured to move to a home position while in the 0.99 ° to 180 ° pivot.
[0013]
The invention according to claim 2, Oite to claim 1, wherein the X-axis moving mechanism is elastically pressed against the X-axis forward direction toward the winding core by biasing means the pressure roller, the winding core The gist of the invention is an elastic support mechanism in which the pressure roller is pushed back in the X-axis rearward direction against the urging force of the urging means by the revolving motion.
[0014]
The invention according to claim 3, Oite to claim 1, wherein the X-axis moving mechanism, based on the movement amount of the recorded X-axis direction on a recording medium in advance controller in arithmetic expressions for calculating operation The gist is that it is configured to be numerically controlled by the calculated value.
[0015]
According to a fourth aspect of the present invention, in the second or third aspect , the pressure roller is attached to the tip of the X-axis moving body moved by the X-axis moving mechanism in a direction in which the core is pressed. The gist is that it is attached via a biasing means having a power.
[0017]
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the amount of movement of the pressure roller in the X-axis direction or the movement in the Y-axis direction corresponding to the plurality of winding cores having different shapes. The gist of the invention is that various conditions and arithmetic expressions for obtaining the quantities are stored in the recording medium, and the arithmetic expressions are selected according to the change of the core.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is embodied in a winding device for a battery electrode sheet used in, for example, a hybrid vehicle will be described with reference to FIGS.
[0019]
FIG. 2 is a schematic front view showing a winding mechanism of the winding device and a moving mechanism of the pressure roller. The winding mechanism is configured in substantially the same manner as described in the prior art. That is, the flat core 11 having a pair of support portions 11a is turned at a predetermined turning speed by the winding motor M11 at a predetermined position. A pair of left and right nip rollers 13 sandwich the electrode sheet 12 at a predetermined position above the core 11 and supply it to the core 11. The electrode sheet 12 is formed by laminating positive and negative electrode sheets 12 a and 12 b and separators 12 c and 12 d by a nip roller 13. The electrode sheet 12 is wound around the core 11.
[0020]
Next, the movement mechanism of the pressure roller 14 will be described. The substrate 15 attached to the front surface of the frame (not shown) of the winding device in the Y-axis (vertical) direction so as to be located on the right side of the winding core 11. A Y-axis guide rail 16 is arranged in the Y-axis (up and down) direction on the left side surface. A Y-axis saddle 17 is attached to the Y-axis guide rail 16 so as to be able to reciprocate in the Y-axis direction, and is reciprocated in the Y-axis direction by a Y-axis motor M17 made of, for example, a linear motor or a servo motor. Yes. An X-axis guide member 19 is attached to the left side surface of the Y-axis saddle 17, and an X-axis moving body 20 is attached to the X-axis guide member 19 so as to be able to reciprocate in the X-axis (front-rear) direction. The X-axis moving body 20 is reciprocated in the X-axis direction by an X-axis motor M19 made of, for example, a linear motor or a servo motor.
[0021]
In this embodiment, the substrate 15, the Y-axis guide rail 16, the Y-axis saddle 17, the Y-axis motor M17, and the like constitute a Y-axis moving mechanism for the pressure roller 14. The X-axis guide member 19, the X-axis moving body 20, and the X-axis motor M19 constitute an X-axis moving mechanism for the pressure roller 14.
[0022]
A holder 22 is attached to the tip of the X-axis moving body 20, and a rod 23 is slidably supported on the holder 22, and the pressure roller 14 is rotatably supported via the shaft 24 at the tip. ing. A coiled spring 25 is accommodated in the holder 22 as an urging means for urging the rod 23 forward with a constant urging force in the direction in which the core 11 is pressed.
[0023]
Next, the configuration of the control device 31 for controlling the operations of the winding motor M11, the Y-axis motor M17, the X-axis motor M19, and the like, which are, for example, servomotors for winding, will be described with reference to FIG.
[0024]
The control device 31 is a central processing unit (for example, performing various arithmetic processing such as control of the amount of movement of the pressure roller 14 based on various conditions and data such as arithmetic expressions (1) and (2) described later). CPU) 32 is provided. The control device 31 is a read-only memory (ROM) 33 as a read-only recording medium in which various processing programs such as movement amount control are recorded and various data as a recording medium that can be read or written. Random access memory (RAM) 34.
[0025]
The control device 31 is provided with a winding motor controller 35 that is connected to the CPU 32 and outputs a preset turning speed command of the winding core 11 to the winding motor M11. The winding motor controller 35 turns the winding motor M11 at a preset speed so that the winding speed of the winding motor M11 is constant.
[0026]
The controller 31 is connected to the CPU 32 and controls the X-axis motor M19 in synchronization with the winding operation of the winding core 11 to numerically control the position of the pressure roller 14 in the X-axis direction. An X-axis motor control unit 36 for outputting a rotation speed command is provided.
[0027]
Further, the control device 31 is connected to the CPU 32 and controls the Y-axis motor M17 in synchronization with the winding operation of the winding core 11 to numerically control the position of the pressure roller 14 in the Y-axis direction. A Y-axis motor control unit 37 is provided for outputting a rotational speed command.
[0028]
Connected to the control device 31 is an operation panel 38 having various keys for inputting various conditions such as the shape and dimensions of the core and creating an arithmetic expression. The control device 31 is connected to a display device 39 capable of displaying various conditions and arithmetic expressions.
[0029]
Next, various conditions and arithmetic expressions stored in the recording medium of the control device 31 in order to appropriately control the position of the pressure roller 14 following the turning operation of the core 11 will be described.
[0030]
In this embodiment, the winding core 11 in the vertical state shown by the solid line in FIG. From this winding start position, the core 11 is turned clockwise in FIG. The turning angle of the winding core 11 from the winding start position is defined as θ. The tip of the electrode sheet 12 is disposed so as to hang down on the right side surface of the core 11, and the electrode sheet 12 is wound around the core by the pressure roller 14 at a position corresponding to the turning center O _{1 of the} core 11. 11 is pressed.
[0031]
Supporting portion 11a (starting end P1, end P2) from the turning center _{O 1} of the core 11 a distance to the R, radius r1 of the support portion 11a of the core 11, the radial dimension r of the pressure roller 14, the electrode sheet The thickness dimension is ts.
[0032]
Calculation formula for obtaining the amount of movement in the Y-axis direction to the rotational center O ₂ of the rotation center O ₁ X axis direction of the reference line L1 from the pressure roller 14 through the winding core 11 Y (theta), as follows Is set.
[0033]
When the turning angle θ is 0 ° ≦ θ <30 °, Y (θ) = (R cos 30 °) × (θ / 30 °) (1)
When the turning angle θ is 30 ° ≦ θ ≦ 150 °, Y (θ) = R cos θ (2)
When the turning angle θ is 150 ° <θ <180 °, Y (θ) = (R cos 150 °) × [(180 ° −θ) / 30 °] (3)
These arithmetic expressions (1), (2), (3) and the various dimensional conditions are recorded in advance on the recording medium of the control device 31, and are obtained by the above arithmetic expressions (1), (2), (3). The Y-axis motor M17 is numerically controlled based on the obtained movement amount Y (θ).
[0034]
On the other hand, calculation formula for obtaining the amount of movement in the X-axis direction to the rotational center O ₂ of the rotation center O ₁ the pressure roller 14 from the reference line L2 in the Y-axis direction through the X (theta) of the winding core 11, the following Is set as follows.
[0035]
When the turning angle θ is 0 ° ≦ θ <30 °, X (θ) = (Rsin 30 °) × (θ / 30 °) + (r1 + r) (4)
When the turning angle θ is 30 ° ≦ θ ≦ 150 °, X (θ) = (Rsin θ) + (r1 + r) (5)
When the turning angle θ is 150 ° <θ <180 °

The arithmetic expressions (4), (5), (6) and the various dimensional conditions are recorded in advance on the recording medium of the control device 31, and are obtained by the arithmetic expressions (3), (5), (6). The X-axis motor M19 is numerically controlled based on the movement amount X (θ).
[0036]
The X-axis motor M19 and the Y-axis motor M17 are numerical values based on the calculated values calculated by the X-axis motor control unit 36 and the Y-axis motor control unit 37 according to the calculation formulas of the movement amounts X (θ) and Y (θ). Thus, the pressing operation of the electrode sheet 12 on the core 11 by the pressure roller 14 is appropriately performed.
[0037]
Next, the operation of the winding device configured as described above will be described.
In FIG. 1, when the winding core 11 starts turning from the winding start position, the electrode sheet 12 is wound around the outer peripheral surface of the winding core 11 to form a sheet winding body. Prior to the start of the winding operation, the end edge of the electrode sheet 12 is bonded by a tape bonding device (not shown) and temporarily fixed to the surface of the core 11. Thereafter, the X-axis motor M19 is operated, and the pressure roller 14 is moved to the start position shown in FIG. 1 (position where it contacts the solid core 11).
[0038]
The pressure roller 14 is reciprocated once in the X-axis direction while the core 11 is swung in the clockwise direction by 180 ° in FIG. 1 from the winding start position of the electrode sheet 12 and the Y-axis direction. Is also reciprocated. By the position control of the pressure roller 14 in the X-axis direction and the Y-axis direction, the pressing operation of the pressure roller 14 against the core 11 is appropriately performed.
[0039]
When the winding operation of the electrode sheet 12 around the winding core 11 is started and the winding core 11 is turned several times, the winding state of the electrode sheet 12 around the winding core 11, that is, the connection between the winding core 11 and the electrode sheet 12 is ensured. together becomes, winding state of the electrode sheet 12 with respect to the core 11 is stabilized by pressing operation of the pressing roller 14. For this reason, the pressure roller 14 is moved to the retracted position.
[0040]
When the winding operation of the predetermined amount of the electrode sheet 12 with respect to the core 11 is completed, the electrode sheet 12 is cut by a cutting mechanism (not shown), and the cut end portion of the electrode sheet 12 is moved to the core 11 side by the pressure roller 14. Pressed with pressure, the cut end is wound around the outer surface of the sheet winder.
[0041]
In the winding operation of the cut end portion of the electrode sheet 12 by the pressure roller 14, the pressure roller 14 is moved to the origin position in consideration of the thickness of the sheet winding body. In the winding processing operation for the cut end portion of the electrode sheet 12, the position control of the pressure roller 14 in the X-axis direction and the Y-axis direction is performed similarly to the winding operation for the tip end portion of the electrode sheet 12. In this case, position control is performed by correcting the position of the pressure roller 14 in the X-axis direction or the Y-axis direction from the calculation of the thickness dimension ts of the electrode sheet 12 and the number of windings.
[0042]
Thereafter, the tape is adhered to the cut end portion of the electrode sheet 12 by a tape attaching device (not shown), and the winding operation of the sheet winding body is completed once.
According to the winding device of the above embodiment, the following features can be obtained.
[0043]
(1) In the above-described embodiment, necessary data such as the above-described various conditions and the calculation formulas (1) to (6) are stored in the control device 31 in advance, and the pressure roller is based on the calculated values obtained from them. The position 14 is moved by numerical control in the X-axis direction and the Y-axis direction. For this reason, when the turning angle θ of the winding core 11 is 0 ° to 30 °, the contact point between the winding core 11 and the pressure roller 14 is moved to the starting end P1 of the support portion 11a, and the winding core 11 is moved at the turning angle θ. While turning 30 ° to 150 °, the support portion 11a moves from the start end P1 to the end P2 of the semicircular arc-shaped outer peripheral surface. Thereafter, the winding core 11 moves from the terminal end P2 of the support portion 11a to the origin position while the winding core 11 is turned by 150 to 180 degrees at the turning angle θ. Therefore, the moving speed (acceleration) of the contact point of the pressure roller 14 with respect to the support portion 11a of the core 11 becomes gentle compared with the moving speed of the conventional pressure roller, and the electrode sheet 12 is properly applied to the surface of the core 11. The electrode sheet 12 can be wound around the core 11 smoothly and reliably.
[0044]
More specifically, in the past, the turning angle θ was 30 ° and the support portion 11a had to be overcome, whereas in the above-described embodiment, it was only necessary to overcome the support portion 11a. The moving speed of the contact point is about a quarter of the speed.
[0045]
(2) In the above embodiment, since the moving speed of the contact point of the pressure roller 14 with respect to the outer peripheral surface of the support portion 11a of the core 11 becomes gentle, the turning speed of the core 11 is increased accordingly, and the electrode for the core 11 is increased. The winding start operation of the sheet 12 can be performed quickly. Further, even when the pressure roller 14 is used over the entire stroke of the electrode sheet 12, it is not necessary to reduce the turning speed of the core 11, and the winding state of the electrode sheet 12 can be stabilized.
[0046]
(3) In the above embodiment, the operation formulas (1) to (6) for the movement amount of the pressure roller 14 in the X-axis direction and the Y-axis direction using the operation panel 38 are changed to the shape or size of the core 11. Changeable according to various conditions. For this reason, even if the shape and dimension of the core 11 are changed, the position control operation of the pressure roller 14 can be appropriately performed without changing the X-axis moving mechanism and the Y-axis moving mechanism, and the setup change is eliminated. Work efficiency can be improved.
[0047]
In addition, you may change this embodiment as follows .
[0048]
In the embodiment, the electrode sheet winding device is embodied. However, the embodiment can be embodied as various sheet winding devices.
In the above embodiment, the winding start position of the core 11 is set as shown in FIG. 1, but this winding start position can be set arbitrarily. In this case, it is necessary to change the above-described arithmetic expressions (1) to (6) based on various condition changes.
[0049]
○ Various conditions and arithmetic expressions for each of the cores 11 having different shapes are stored in the recording medium of the control device 31, and the above various arithmetic expressions are selectively used according to the change of the core 11. May be.
[0050]
The X-axis guide member 19 and the X-axis motor M19 are omitted, and the pressure roller 14 is elastically supported by an elastic support mechanism such as an air cylinder toward the front in the X-axis direction. You may make it press on the surface of the core 11. FIG. In this case, the pressure roller 14 is pushed in the X-axis direction against the urging force by the turning motion of the core 11.
[0051]
Although the Y-axis moving mechanism of the pressure roller 14 is not shown, it may be configured by a lever / link mechanism or a cam mechanism, and may be configured as in the present embodiment or another example described above.
[0052]
In this other example, when the outer shape of the core is changed, it is necessary to change the setup. However, the sheet can be pressed against the core by a pressure roller with an appropriate pressing force. The winding operation can be performed properly, and damage to the winding core can be prevented.
[0053]
【The invention's effect】
As described above in detail, according to the first aspect of the present invention, the sheet can be pressed against the winding core with an appropriate pressing force by a pressure roller, and the sheet can be properly wound around the winding core. It is possible to prevent the core from being damaged.
[0054]
The invention of claim 1 can be appropriately performed pressurization of the sheet to without winding core that the external shape of the core to change the Y-axis moving mechanism of the changed even pressure roller.
[0056]
In addition to the above effects, the invention described in claim 2 can simplify the configuration of the X-axis moving mechanism, facilitate manufacturing and assembling operations, and reduce costs.
Invention of claim 3, the sheet to the winding core without billing in addition to the effects of the invention described in claim 1, be changed outer shape of the core to change the X-axis moving mechanism of the pressure roller Can be appropriately applied.
[0057]
In addition to the effect of the invention described in claim 2 or 3 , the invention described in claim 4 can press the sheet with an appropriate pressing force against the winding core, and the sheet is wound. Therefore, it can operate flexibly and perform a stable winding operation.
[0059]
In addition to the effect of the invention according to any one of claims 1 to 4 , the invention according to claim 5 is an X-axis moving mechanism and a Y-axis moving mechanism of the pressure roller even if the outer shape of the core is changed. It is possible to appropriately press the sheet to the core without changing.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining a pressing operation of a pressure roller of an electrode sheet in a winding device of the present invention.
FIG. 2 is a front view showing a pressure roller moving mechanism.
FIG. 3 is a block circuit diagram showing a control device.
Figure 4 is a front view showing a pressure state of the pressure roller relative to the core of the traditional.
FIG. 5 is a front view showing a pressure state of a pressure roller against a conventional winding core.
[Explanation of symbols]
X (θ), Y (θ): movement amount, O ₁ ... turning center, O ₂ ... rotation center, 11 ... winding core, 11a ... support section, 14 ... pressure roller, 20 ... X-axis moving body, 25 ... Spring as a biasing means, 31... Control device.

Claims (5)

A flat core having two support portions is swung so that the winding speed is constant to wind the sheet on the outer surface of the core, and the sheet is wound by a pressure roller during the winding operation. In a winding device equipped with a pressure roller that presses the core toward the core,
The pressurizing roller presses the winding core, that is, an X-axis moving mechanism that reciprocates in the X-axis direction, and a Y-axis moving mechanism that reciprocates in the Y-axis direction orthogonal to the X-axis direction. The pressure roller is configured to be movable in two axial directions, and the Y-axis moving mechanism is calculated based on an arithmetic expression for calculating the amount of movement in the Y-axis direction recorded in advance on the recording medium of the control device. It is configured to be numerically controlled by the calculated value, and the contact point between the winding core and the pressure roller when the turning angle θ of the winding core is between 0 ° and 30 ° by the Y-axis moving mechanism and the X-axis moving mechanism. Is moved from the origin position corresponding to the center O1 of the winding core to the start end of the semicircular arc-shaped outer peripheral surface of the support portion, and the support portion Move from the start to the end of the semicircular arc-shaped outer peripheral surface, and then the winding core turns In 0.99 ° to 180 ° movement mechanism of the pressure roller in the take-up apparatus characterized by being configured to move from the end of the support portion to the home position during the pivoting. 2. The X-axis movement mechanism according to claim 1, wherein the X-axis moving mechanism elastically presses the pressure roller toward the core by the urging means in the X-axis front direction, and the urging force of the pressure roller by a turning motion of the core. A mechanism for moving the pressure roller in the winding device, which is an elastic support mechanism that is pushed back in the X-axis rearward direction against the urging force of the means. 2. The X-axis moving mechanism according to claim 1, wherein the X-axis moving mechanism is numerically controlled by an arithmetic value calculated based on an arithmetic expression for calculating an amount of movement in the X-axis direction recorded in advance on a recording medium of the control device. The moving mechanism of the pressure roller in the winding device constituted. 4. The biasing means according to claim 2 or 3, wherein the pressing roller has a biasing force in a direction in which the pressure roller is pressed against the tip of the X-axis moving body moved by the X-axis moving mechanism. A moving mechanism of the pressure roller in the attached winding device. 5. Various conditions and arithmetic expressions for obtaining the movement amount in the X-axis direction or the movement amount in the Y-axis direction of the pressure roller corresponding to a plurality of winding cores having different shapes according to claim 1. Is stored in the recording medium, and the pressure roller moving mechanism in the winding device is configured to select the arithmetic expression according to the change of the winding core.

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