Apparatus for manufacturing electrode foil with collector plate

Abstract

Provided is a collector plate-equipped electrode foil manufacturing apparatus capable of adjusting the amount of movement of a needle penetrating through a collector plate and an electrode foil. A needle moving mechanism (55) of a collector plate-equipped electrode foil manufacturing device (30) is provided with: a second rod (91) provided with a second contact section (95) at an end portion in the Y1 direction, the second contact section (95) being capable of coming into contact with a needle (52) from one side in the Z2 direction; a second lever shaft (92) that swingably supports the second lever; and a second lever swing mechanism (93) that moves an end portion of the second lever in the Y2 direction by a predetermined distance (D) in the Z-axis direction. In addition, the needle moving mechanism (55) is provided with a second lever shaft elevating mechanism (101) that elevates the second lever shaft. When the second lever shaft elevating mechanism (101) moves a second lever shaft, which is the center of oscillation of the second lever, in the Z-axis direction, the movement range of the second contact section (95) varies in the Z-axis direction. Therefore, the movement amount of the needle (52) at the initial needle position R of the second rod in the Z-axis direction can be adjusted.

Description

Technical Field

[0001] The present invention relates to an electrode foil manufacturing apparatus with a current collector plate, which manufactures an electrode foil with a current collector plate where the electrode foil and the current collector plate are connected by a riveting portion. Background Art

[0002] An electrode foil manufacturing apparatus with a current collector plate is described in Patent Document 1. When manufacturing the electrode foil with a current collector plate in this document, first, a punch penetrates the electrode foil that has undergone chemical conversion film treatment from above to form a hole. Next, the electrode foil manufacturing apparatus with a current collector plate overlaps the current collector plate on the hole, inserts a piercing needle into the hole from the current collector plate side, and forms burrs of the current collector plate on the back side of the electrode foil. Then, the electrode foil manufacturing apparatus with a current collector plate compresses the electrode foil and the current collector plate by pressing a stamping die from above, causing the burrs to plastically deform, thereby forming a riveting portion. Thus, the electrode foil and the current collector plate are fastened.

[0003] In the above document, the piercing needle is held at the lower end portion of the needle holder. The needle holder is supported by a base in a state movable in the vertical direction in the apparatus. At the upper end portion of the needle holder, a cam follower portion that frictionally contacts a cam is provided. When the cam rotates above the needle holder, the needle holder is pressed downward, and the piercing needle penetrates the current collector plate and the electrode foil.

[0004] Prior Art Documents:

[0005] Patent Documents:

[0006] Patent Document 1: Japanese Patent Laid-Open No. 2003-282364 Summary of the Invention

[0007] Problems to be Solved by the Invention:

[0008] If the depth at which the piercing needle penetrates the current collector plate and the electrode foil is shallow, there will be a problem that the burrs that become the riveting portion during stamping cannot be formed well. In addition, if the depth at which the piercing needle penetrates the current collector plate and the electrode foil is deep, the piercing needle is easily worn, and the piercing needle has to be frequently replaced. Therefore, every time the electrode foil and / or the current collector plate used in manufacturing is changed, it is necessary to adjust the depth at which the piercing needle penetrates the current collector plate and the electrode foil corresponding to the thickness of the electrode foil and / or the thickness of the current collector plate.

[0009] In addition, when the stamping amount of the stamping die pressing the current collector plate and the electrode foil from above is insufficient, that is, when the moving amount of the stamping die moving toward the current collector plate and the electrode foil is insufficient, the formation of the riveting portion will be insufficient, and the bonding between the current collector plate and the electrode foil will become loose. When the stamping amount of the stamping die pressing the current collector plate and the electrode foil from above is excessive, that is, when the moving amount of the stamping die moving toward the current collector plate and the electrode foil is excessive, cracks and / or breakage may occur in the current collector plate or the electrode foil. Therefore, every time the electrode foil and / or the current collector plate used in manufacturing is changed, it is necessary to adjust the moving amount of the stamping die moving toward the current collector plate and the electrode foil corresponding to the thickness of the electrode foil and / or the thickness of the current collector plate.

[0010] In addition, if the depth of the punch penetrating the electrode foil is shallow, there will be a problem that holes are not formed in the electrode foil. If the depth of the punch penetrating the electrode foil is deep, the punch is easily worn, and the punch has to be frequently replaced. Therefore, every time the electrode foil used in manufacturing is changed, it is necessary to adjust the depth of the punch penetrating the current collector plate corresponding to the thickness of the electrode foil.

[0011] In view of the above problems, the subject of the present invention is to provide an electrode foil manufacturing apparatus with a current collector plate that can adjust the moving amount of the needle penetrating the current collector plate and the electrode foil. In addition, it is to provide an electrode foil manufacturing apparatus with a current collector plate that can adjust the moving amount of the stamping die moving toward the current collector plate and the electrode foil. In addition, it is to provide an electrode foil manufacturing apparatus with a current collector plate that can adjust the moving amount of the punch when forming a through hole in the electrode foil.

[0012] Means for solving the problem:

[0013] To solve the above subject, the electrode foil manufacturing apparatus with a current collector plate of the present invention includes: a plate that supports a laminate from below, the laminate including an electrode foil and a current collector plate having an overlapping portion overlapping above the electrode foil; a needle; and a needle punching mechanism that penetrates the laminate from above with the needle and inserts the tip of the needle into a needle receiving hole provided in the plate, forming a through hole in the overlapping portion and burrs that penetrate the electrode foil from the opening edge of the through hole and protrude to the opposite side of the overlapping portion; the needle punching mechanism includes: a needle support mechanism that supports the needle so as to be movable in the vertical direction; a needle biasing mechanism that biases the needle to a needle initial position that is away from the plate upward; and a needle moving mechanism that moves the needle downward from the needle initial position; the needle moving mechanism includes: a needle rod that has a needle abutting portion at one end portion, the needle abutting portion being able to abut against the needle disposed at the needle initial position from above; a rod shaft that supports the needle rod so as to be swingable; a needle rod swinging mechanism that moves the other end portion of the needle rod upward by a predetermined distance; and a rod shaft lifting mechanism that raises and lowers the rod shaft.

[0014] According to the present invention, the needle moving mechanism includes: a needle rod having a needle abutting portion at one end that can abut against the needle from above; a rod shaft that supports the needle rod so as to be swingable; and a needle rod swinging mechanism that moves the other end portion of the needle rod upward by a predetermined distance. Therefore, the needle rod swinging mechanism moves the other end portion of the needle rod upward by a predetermined distance, whereby the needle rod swings around the rod shaft. As a result, the needle abutting portion of the needle rod moves downward by a pressing distance corresponding to the predetermined distance, causing the needle to move downward. Thereby, the needle forms a perforation and burrs in the overlapping portion. In addition, the needle moving mechanism includes a rod shaft lifting mechanism that lifts and lowers the rod shaft. Here, when the rod shaft lifting mechanism moves the rod shaft, which is the swing center of the needle rod, upward, the movement range of the needle abutting portion of the needle rod changes upward, so the amount of movement of the needle abutting portion that moves the needle located at the initial position of the needle downward decreases. On the other hand, when the rod shaft, which is the rotation center of the needle rod, is moved downward, the movement range of the needle abutting portion of the needle rod changes downward, so the amount of movement of the needle abutting portion that moves the needle located at the initial position of the needle downward increases. Therefore, by lifting and lowering the rod shaft with the rod shaft lifting mechanism, the movement amount of the needle penetrating the current collector plate and the electrode foil can be adjusted. Therefore, every time the electrode foil and / or the current collector plate used in manufacturing are changed, the depth at which the needle penetrates the current collector plate and the electrode foil can be adjusted corresponding to the thickness of the electrode foil and / or the thickness of the current collector plate.

[0015] In the present invention, the rod shaft lifting mechanism may include: a disk member; a support mechanism that supports the disk member so as to be rotatable about its central axis; and a servo motor that rotates the disk member; the rod shaft is eccentrically mounted with respect to the disk member. In this way, by rotating the disk member with the servo motor, the rod shaft can be lifted and lowered. In addition, in this way, compared with the case of directly lifting and lowering the rod shaft using a linear actuator, the rod shaft can be easily lifted and lowered with high resolution. In addition, if a servo motor is used as the drive source, the rod shaft can be accurately arranged at a desired height position. Therefore, the reproducibility when the rod shaft is arranged at a desired position is high. Therefore, in the case where the electrode foil and / or the current collector plate used in manufacturing are changed, the height position of the rod shaft can be adjusted based on the thickness of the current collector plate and / or the thickness of the electrode foil.

[0016] In the present invention, the needle rod swinging mechanism may include: a rotating shaft parallel to the rod shaft; a cam mounted on the rotating shaft; and a cam motor that drives the rotating shaft to rotate; the other end portion of the needle rod is a cam follower that slidably contacts the cam. In this way, it is easy to move the other end portion of the needle rod by a predetermined distance.

[0017] Next, the electrode foil manufacturing apparatus with a current collector plate according to the present invention includes: a plate that supports, from below, a laminate having burrs formed thereon, the laminate having an electrode foil and a current collector plate having an overlapping portion that overlaps above the electrode foil, the overlapping portion of the current collector plate having a through hole and burrs that penetrate the electrode foil from the opening edge of the through hole and protrude to the opposite side of the overlapping portion; a stamping die; and a riveting mechanism that brings the stamping die closer to the plate from above and clamps the laminate having burrs formed thereon between the stamping die and the plate, causing the burrs to plastically deform to the outer peripheral side of the through hole to form a riveted portion that fixes the electrode foil and the current collector plate; the riveting mechanism includes: a stamping die support mechanism that supports the stamping die so as to be movable in the vertical direction; a stamping die biasing mechanism that biases the stamping die to an initial position of the stamping die that is away from the plate upward; and a stamping die moving mechanism that moves the stamping die downward from the initial position of the stamping die; the stamping die moving mechanism includes: a stamping die rod that has a stamping die abutting portion at one end portion, the stamping die abutting portion being able to abut against the stamping die disposed at the initial position of the stamping die from above; a rod shaft that supports the stamping die rod so as to be swingable; a stamping die rod swing mechanism that moves the other end portion of the stamping die rod upward by a predetermined distance; and a rod shaft lifting mechanism that raises and lowers the rod shaft.

[0018] According to the present invention, a stamping die moving mechanism includes: a stamping die rod having a stamping die abutting portion at one end portion thereof that can abut against the stamping die from above; a rod shaft that supports the stamping die rod so as to be swingable; and a stamping die rod swinging mechanism that moves the other end portion of the stamping die rod upward by a predetermined distance. Therefore, the stamping die rod swinging mechanism moves the other end portion of the stamping die rod upward by a predetermined distance, whereby the stamping die rod swings around the rod shaft. Accordingly, the stamping die abutting portion of the stamping die rod moves downward by an insertion distance corresponding to the predetermined distance, causing the stamping die to move downward. Thereby, the stamping die stamps the laminated body having burrs formed thereon to form a riveted portion. In addition, the stamping die moving mechanism includes a rod shaft lifting mechanism that lifts and lowers the rod shaft. Here, if the rod shaft lifting mechanism moves the rod shaft, which is the swing center of the stamping die rod, upward, the moving range of the stamping die abutting portion of the stamping die rod changes upward, so the amount of movement of the stamping die abutting portion that moves the stamping die located at the initial position of the stamping die downward decreases. On the other hand, if the rod shaft, which is the rotation center of the stamping die rod, is moved downward, the moving range of the stamping die abutting portion of the stamping die rod changes downward, so the amount of movement of the stamping die abutting portion that moves the stamping die located at the initial position of the stamping die downward increases. Therefore, by lifting and lowering the rod shaft by the rod shaft lifting mechanism, the amount of movement of the stamping die that stamps the laminated body having burrs formed thereon can be adjusted. Accordingly, each time the electrode foil and / or the current collector plate used in manufacturing is changed, the amount of movement of the stamping die moving toward the laminated body having burrs formed thereon can be adjusted corresponding to the thickness of the electrode foil and / or the thickness of the current collector plate.

[0019] In the present invention, the rod shaft lifting mechanism may have: a disk member; a support mechanism that supports the disk member so as to be rotatable about its central axis; and a servo motor that is used to rotate the disk member; the rod shaft is eccentrically mounted with respect to the disk member. In this way, by rotating the disk member by the servo motor, the rod shaft can be lifted and lowered. In addition, in this way, compared with the case of directly lifting and lowering the rod shaft using a linear actuator, the rod shaft can be easily lifted and lowered with high resolution. Further, if a servo motor is used as the drive source, the rod shaft can be accurately arranged at a desired height position. Therefore, the reproducibility when the rod shaft is arranged at a desired position is high. Accordingly, in the case where the electrode foil and / or the current collector plate used in manufacturing is changed, the height position of the rod shaft can be adjusted based on the thickness of the current collector plate and / or the thickness of the electrode foil.

[0020] In the present invention, the rod swing mechanism for a stamping die includes: a rotation axis parallel to the rod axis; a cam mounted on the rotation axis; and a cam motor for driving the rotation axis to rotate; the end portion on the other side of the rod for the stamping die is a cam follower that slidably contacts the cam. In this way, it is easy to move the end portion on the other side of the rod for the stamping die by a specified distance.

[0021] Next, the electrode foil manufacturing apparatus with a current collector plate of the present invention has: a plate that supports the electrode foil from below; a punch; and a punching mechanism that penetrates the electrode foil from above with the punch and inserts the tip of the punch into a punch receiving hole provided in the plate to form a through hole in the electrode foil; the punching mechanism includes: a punch support mechanism that supports the punch so as to be movable in the vertical direction; a punch biasing mechanism that biases the punch to an initial punch position that is away from the plate upward; and a punch moving mechanism that moves the punch downward from the initial punch position; the punch moving mechanism includes: a punch rod that has a punch contact portion at one end portion, and the punch contact portion can contact the punch disposed at the initial punch position from above; a rod axis that supports the punch rod so as to be swingable; a punch rod swing mechanism that can move the end portion on the other side of the punch rod upward by a specified distance; and a rod axis lifting mechanism that raises and lowers the rod axis.

[0022] According to the present invention, the punch moving mechanism includes: a punch rod that has a punch contact portion at one end portion that can contact the punch from above; a rod axis that supports the punch rod so as to be swingable; and a punch rod swing mechanism that can move the end portion on the other side of the punch rod upward by a specified distance. Therefore, the punch rod swing mechanism moves the end portion on the other side of the punch rod upward by a specified distance, whereby the punch rod swings around the rod axis. Accordingly, the punch contact portion of the punch rod moves downward by a pressing distance corresponding to the specified distance, causing the punch to move downward. Thereby, a through hole is formed in the electrode foil. In addition, the punch moving mechanism includes a rod axis lifting mechanism that raises and lowers the rod axis. Here, if the rod axis lifting mechanism moves the rod axis, which is the swing center of the punch rod, upward, the moving range of the punch contact portion of the punch rod changes upward, so the amount of movement of the punch contact portion that causes the punch disposed at the initial punch position to move downward decreases. On the other hand, if the rod axis, which is the rotation center of the punch rod, is moved downward, the moving range of the punch contact portion of the punch rod changes downward, so the amount of movement of the punch contact portion that causes the punch disposed at the initial punch position to move downward increases. Therefore, by raising and lowering the rod axis with the rod axis lifting mechanism, the amount of movement of the punch that penetrates the electrode foil can be adjusted. Accordingly, every time the electrode foil used in manufacturing is changed, the depth at which the punch penetrates the electrode foil can be adjusted corresponding to the thickness of the electrode foil.

[0023] In the present invention, the rod shaft lifting mechanism includes: a disk member; a support mechanism that supports the disk member so as to be rotatable about its central axis; and a servo motor that rotates the disk member; the rod shaft is eccentrically mounted with respect to the disk member. In this way, by rotating the disk member with the servo motor, the rod shaft can be lifted and lowered. In addition, in this way, compared with the case of directly lifting and lowering the rod shaft using a direct-acting actuator, the rod shaft can be easily lifted and lowered with high resolution. Further, if a servo motor is used as the drive source, the rod shaft can be accurately arranged at a desired height position. Therefore, the reproducibility when arranging the rod shaft at a desired position is high. Therefore, when the electrode foil used in manufacturing is changed, the height position of the rod shaft can be adjusted based on the thickness of the electrode foil.

[0024] In the present invention, the punch rod swing mechanism includes: a rotation axis parallel to the rod shaft; a cam mounted on the rotation axis; and a cam motor that drives the rotation axis to rotate; the other end portion of the punch rod is a cam follower that slidably contacts the cam. In this way, it is easy to move the other end portion of the punch rod by a predetermined distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an explanatory view of an electrode foil with a current collector plate to which the present invention is applied.

[0026] Figure 2 It is an explanatory view of a riveted portion.

[0027] Figure 3 It is an explanatory view of a main part of an electrode foil manufacturing apparatus with a current collector plate.

[0028] Figure 4 It is an explanatory view of a manufacturing method of an electrode foil with a current collector plate.

[0029] Figure 5 It is an explanatory view of a manufacturing method of an electrode foil with a current collector plate.

[0030] Figure 6 It is an explanatory view of a manufacturing method of an electrode foil with a current collector plate.

[0031] Figure 7 It is a perspective view when observing the main part of an electrode foil manufacturing apparatus with a current collector plate from above.

[0032] Figure 8 It is a perspective view when observing the main part of an electrode foil manufacturing apparatus with a current collector plate from the side.

[0033] Figure 9 It is a perspective view of the main part of an electrode foil manufacturing apparatus with a current collector plate pressing the punch.

[0034] Figure 10 It is a perspective view of the main part of an electrode foil manufacturing apparatus with a current collector plate for pressing down the lower needle.

[0035] Figure 11 It is a perspective view of the main part of an electrode foil manufacturing apparatus with a current collector plate for pressing down the stamping die.

[0036] Figure 12 It is an explanatory view of a needle moving mechanism for raising a second rod shaft.

[0037] Figure 13 It is an explanatory view of a needle moving mechanism for lowering a second rod shaft. Detailed implementation mode

[0038] Hereinafter, an electrode foil manufacturing apparatus with a current collector plate to which the present invention is applied will be described with reference to the drawings.

[0039] (Electrode foil with current collector plate)

[0040] Figure 1 It is an explanatory view of an electrode foil with a current collector plate. Figure 1 (a) thereof is a plan view when observing the electrode foil with a current collector plate from the side of the current collector plate, Figure 1 (b) thereof is a plan view when observing the electrode foil with a current collector plate from the side opposite to the current collector plate. Figure 2 It is a cross-sectional view of a riveted portion. First, refer to Figure 1 、 Figure 2 to describe the electrode foil 1 with a current collector plate manufactured by the electrode foil manufacturing apparatus with a current collector plate.

[0041] In this example, the electrode foil 1 with a current collector plate is a component of a capacitor element constituting an electrolytic capacitor. As Figure 1 (a) of FIG. shows, the electrode foil 1 with a current collector plate includes an electrode foil 2 (anode electrode foil) and a current collector plate 3. As Figure 2 shown, the electrode foil 2 includes a base material 5 made of an etched aluminum foil and a chemical conversion film 6 covering the surface of the base material 5. The current collector plate 3 is an aluminum plate member.

[0042] As Figure 1 shown, the current collector plate 3 includes an overlapping portion 10 overlapping with the electrode foil 2 and a protruding portion 11 protruding from the overlapping portion 10 to the outside of the electrode foil 2. The protruding portion 11 extends in a direction orthogonal to the edge of the electrode foil 2. The electrode foil 2 and the current collector plate 3 are connected by a riveted portion 4 as Figure 1 (a) of FIG. shows. The riveted portion 4 includes a rectangular perforation 21 provided on the overlapping portion 10. In addition, the riveted portion 4 is as Figure 1As shown in FIG. 2(b), the opening edge of the through hole 21 provided in the current collector plate 3 has a burr 23 that penetrates the through hole 22 formed in the electrode foil 2 and reaches the back side of the electrode foil 2. The burr 23 bends toward the outer peripheral side of the through hole 21 and presses the electrode foil 2 toward the overlapping portion 10. Here, the electrode foil 1 with a current collector plate sometimes has a plurality of riveting portions 4.

[0043] (Electrode Foil Manufacturing Apparatus with Current Collector Plate)

[0044] Next, an electrode foil manufacturing apparatus with a current collector plate will be described. Figure 3 It is an explanatory view of the main part of the electrode foil manufacturing apparatus with a current collector plate. Figure 4 、 Figure 5 、 Figure 6 It is an explanatory view of the manufacturing operation of manufacturing an electrode foil with a current collector plate by the electrode foil manufacturing apparatus with a current collector plate.

[0045] As Figure 3 shown, the electrode foil manufacturing apparatus 30 with a current collector plate includes a plate 32 having a placement surface 31 for placing the electrode foil 2 on the upper surface. On the placement surface 31, a through hole formation position A for forming a through hole 22 in the electrode foil 2, a through hole formation position B for providing a through hole 21 in the current collector plate 3 overlapping the electrode foil 2, and a riveting position C for stamping the electrode foil 2 and the current collector plate 3 are set. The through hole formation position A, the through hole formation position B, and the riveting position C are sequentially set in the extending direction of the plate 32. The plate 32 has a punch receiving hole 33 that penetrates in the vertical direction at the through hole formation position A on the placement surface 31. In addition, the plate 32 has a needle receiving hole 34 that penetrates in the vertical direction at the through hole formation position B. The plate 32 is fixed to the base 25.

[0046] In addition, the electrode foil manufacturing apparatus 30 with a current collector plate includes a punch 42 disposed above the through hole formation position A of the plate 32 and a first peeling member 43 located between the punch 42 and the plate 32. The punch 42 includes a punch main body 41a and a punch holder 41b that holds the punch main body 41a. The punch main body 41a is held at the lower end portion of the punch holder 41b. The first peeling member 43 is provided with a pin guide hole 44 that penetrates in the vertical direction. The punch main body 41a can be inserted through the pin guide hole 44.

[0047] The punch 42 is supported by the base 25 so as to be movable up and down (punch support mechanism). In addition, the punch 42 is biased by a spiral spring (not shown) provided between the base 25 and the punch holder 41b toward a punch initial position Q that is away from the plate 32 upward. Figure 3 In, the punch 42 is located at the punch initial position Q. The spiral spring is a punch biasing mechanism that biases the punch 42 toward the punch initial position Q.

[0048] In addition, the electrode foil manufacturing apparatus 30 with a current collector plate includes a punch moving mechanism 45 that moves the punch 42 downward from the punch initial position Q. The base 25, the punch biasing mechanism, and the punch moving mechanism 45 constitute a punching mechanism 46. The punching mechanism 46 causes the punch 42 to penetrate the electrode foil 2 from above and inserts the tip of the punch 42 into the punch receiving hole 33 provided in the plate 32, thereby forming a through hole 22 in the electrode foil 2. The first peeling member 43 is lifted and lowered by a first peeling member moving mechanism (not shown). Details of the punch moving mechanism 45 will be described later.

[0049] In addition, the electrode foil manufacturing apparatus 30 with a current collector plate includes a current collector plate supply mechanism (not shown) that supplies the current collector plate 3 to the perforation formation position B on the plate 32. The current collector plate 3 overlaps the electrode foil 2 from above. Thus, the current collector plate 3 and the electrode foil 2 form a laminate 15 (see Figure 5 (a)). The current collector plate 3 includes an overlapping portion 10 that overlaps above the electrode foil 2 and a protruding portion 11 that protrudes from the overlapping portion 10 to the outside of the electrode foil 2.

[0050] In addition, the electrode foil manufacturing apparatus 30 with a current collector plate includes a needle 52 disposed above the perforation formation position B on the plate 32 and a second peeling member 53 located between the needle 52 and the plate 32. The needle 52 includes a needle body 51a and a needle holder 51b that holds the needle body 51a. The needle body 51a is held at the lower end portion of the needle holder 51b. The second peeling member 53 is provided with a needle guide hole 54 that penetrates in the vertical direction. The needle body 51a can be inserted through the needle guide hole 54.

[0051] The needle 52 is supported by the base 25 (needle support mechanism) so as to be movable up and down. In addition, the needle 52 is biased by a spiral spring (not shown) provided between the base 25 and the needle holder 51b toward the needle initial position R that is away from the plate 32 upward. Figure 3 In [reference], the needle 52 is located at the needle initial position R. The spiral spring is a needle biasing mechanism that biases the needle 52 toward the needle initial position R.

[0052] In addition, the electrode foil manufacturing apparatus 30 with a current collector plate includes a needle moving mechanism 55 that moves the needle 52 downward from the needle initial position R. The base 25, the needle biasing mechanism, and the needle moving mechanism 55 constitute a needle punching mechanism 56. The needle punching mechanism 56 penetrates the needle 52 from the current collector plate 3 side through the laminate 15 formed by the current collector plate 3 and the electrode foil 2 and inserts the tip into the needle receiving hole 34 provided in the plate 32, thereby forming a perforation in the overlapping portion 10 of the current collector plate 3 and a burr 23 that penetrates the electrode foil 2 from the opening edge of the perforation and protrudes to the opposite side of the overlapping portion 10. Thus, the needle punching mechanism 56 causes Figure 5 the laminate 15 shown in (a) of [reference] to become Figure 5 the burr-formed laminate 16 shown in (b) of [reference]. The second peeling member 53 is lifted and lowered by a second peeling member moving mechanism (not shown). Details of the needle moving mechanism 55 will be described later.

[0053] Here, the electrode foil manufacturing apparatus 30 with a current collector plate includes a lower arrow 58 disposed below the perforation forming position B of the plate 32. The lower arrow 58 includes a lower arrow main body 57a and a lower arrow holder 57b. The lower arrow main body 57a is rod-shaped. The lower arrow 58 overlaps with the needle receiving hole 34 provided on the plate 32 when viewed from the vertical direction.

[0054] In addition, the electrode foil manufacturing apparatus 30 with a current collector plate includes a stamping die 62 above the riveting position C. The stamping die 62 includes a stamping die main body 61a and a stamping die holder 61b that holds the stamping die main body 61a. The stamping die main body 61a is held at the lower end portion of the stamping die holder 61b. The stamping die 62 is supported vertically movably by the base 25 (stamping die support mechanism). In addition, the stamping die 62 is biased by a not-shown coil spring provided between the base 25 and the stamping die holder 61b toward the stamping die initial position S that is away from the plate 32 upward. Figure 3 In this case, the stamping die 62 is located at the stamping die initial position S. The coil spring is a stamping die biasing mechanism that biases the stamping die 62 toward the stamping die initial position S.

[0055] In addition, the electrode foil manufacturing apparatus 30 with a current collector plate includes a stamping die moving mechanism 65 that moves the stamping die 62 downward from the stamping die initial position S. The base 25, the stamping die biasing mechanism, and the stamping die moving mechanism 65 constitute a riveting mechanism 66. The riveting mechanism 66 brings the stamping die 62 close to the plate 32 from above and clamps the laminated body 16 with burrs formed therebetween, and plastically deforms the burrs 23 toward the outer peripheral side of the perforation to form the riveted portion 4 of the fixed electrode foil 2 and the current collector plate 3. In this example, the needle moving mechanism 55 and the stamping die moving mechanism 65 are the same mechanism. In other words, the needle moving mechanism 55 also serves as the stamping die moving mechanism 65.

[0056] Here, the electrode foil manufacturing apparatus 30 with a current collector plate includes a base moving mechanism 68 that moves the base 25, and thereby moves the plate 32, the punch 42, the first peeling member 43, the needle 52, the second peeling member 53, the lower arrow 58, and the stamping die 62 integrally in the horizontal direction along the mounting surface 31 of the plate 32. In addition, the electrode foil manufacturing apparatus 30 with a current collector plate has an electrode foil holding mechanism (not shown) that holds the electrode foil 2 placed on the mounting surface 31 of the plate 32. The electrode foil holding mechanism does not move the electrode foil 2 together with the plate 32 in the horizontal direction when the base moving mechanism 68 operates, but leaves it there.

[0057] As Figure 3As shown, when manufacturing the electrode foil 1 with a current collector plate, the electrode foil manufacturing apparatus 30 with a current collector plate first disposes the electrode foil 2 at the through-hole forming position A on the placement surface 31 of the plate 32. Next, as shown in Figure 4 (a) thereof, the electrode foil manufacturing apparatus 30 with a current collector plate lowers the first peeling member 43 to clamp the electrode foil 2 between the first peeling member 43 and the plate 32. Then, the electrode foil manufacturing apparatus 30 with a current collector plate lowers the punch 42 through the punch moving mechanism 45, penetrates the punch main body 41a through the electrode foil 2, and inserts the tip of the punch main body 41a into the punch receiving hole 33. Thereby, a through-hole 22 is formed in the electrode foil 2.

[0058] Next, as shown in Figure 4 (b) thereof, the electrode foil manufacturing apparatus 30 with a current collector plate raises the punch 42 to pull out the punch main body 41a from the electrode foil 2. Then, the electrode foil manufacturing apparatus 30 with a current collector plate raises the first peeling member 43.

[0059] Here, as shown by the thick white arrow in Figure 4 (c), the base moving mechanism 68 slides the base 25. Thereby, the electrode foil manufacturing apparatus 30 with a current collector plate moves the plate 32, the punch 42, the first peeling member 43, the needle 52, the second peeling member 53, and the stamping die 62 in the horizontal direction. Here, the electrode foil holding mechanism prevents the electrode foil 2 from moving horizontally together with the plate 32 and keeps it in place. As a result, the electrode foil 2 moves relative to the plate 32. Therefore, as shown in Figure 4 (c), the electrode foil 2 moves on the placement surface 31 to the perforation forming position B.

[0060] The electrode foil 2 is disposed at the perforation forming position B in such a manner that the formed through-hole 22 overlaps with the needle receiving hole 34 of the plate 32. When the electrode foil 2 is disposed at the perforation forming position B, as shown in Figure 5 (a) thereof, the current collector plate 3 is supplied to the perforation forming position B. Thereby, the current collector plate 3 overlaps with the portion of the electrode foil 2 where the through-hole 22 is formed from above, and the electrode foil 2 and the current collector plate 3 form a laminate 15. When the current collector plate 3 overlaps with the electrode foil 2, the current collector plate 3 includes: an overlapping portion 10 that covers the through-hole 22 provided in the electrode foil 2 from above; and a protruding portion 11 that protrudes outward from the electrode foil 2.

[0061] Next, the electrode foil manufacturing apparatus 30 with a current collector plate is as shown in Figure 5As shown in FIG. (b), the second peeling member 53 is lowered to sandwich the laminate 15 between the second peeling member 53 and the plate 32. Then, the electrode foil manufacturing apparatus 30 with a current collector plate lowers the needle 52 through the needle moving mechanism 55, penetrates the current collector plate 3 and the electrode foil 2 with the needle 52, and inserts the tip of the needle 52 into the needle receiving hole 34. Thereby, the perforation 21 is formed in the overlapping portion 10 of the current collector plate 3. Further, a through hole 22 penetrating the electrode foil 2 is formed at the opening edge of the perforation 21 in the overlapping portion 10, and a burr 23 protruding toward the opposite side (downward) of the overlapping portion 10 of the electrode foil 2 is formed. Thus, the laminate 15 becomes the laminate 16 with burrs formed. The burr 23 extends inside the needle receiving hole 34.

[0062] Then, as Figure 5 shown in FIG. (c), the electrode foil manufacturing apparatus 30 with a current collector plate raises the needle 52 and pulls out the needle 52 from the electrode foil 2. Then, the electrode foil manufacturing apparatus 30 with a current collector plate raises the second peeling member 53 and separates the second peeling member 53 from the current collector plate 3.

[0063] When the needle 52 is raised, the lower arrow 58 rises accordingly. Thus, the lower arrow 58 contacts the burr 23 from below and pushes up the laminate 16 with burrs formed.

[0064] Here, when the burr 23 of the laminate 16 with burrs formed penetrates upward from the needle receiving hole 34, as Figure 6 shown by the white thick arrow in FIG. (a), the base moving mechanism 68 of the electrode foil manufacturing apparatus 30 with a current collector plate slides the base 25. Thereby, the electrode foil manufacturing apparatus 30 with a current collector plate moves the plate 32, the punch 42, the first peeling member 43, the needle 52, the second peeling member 53, the lower arrow 58, and the stamping die 62 further in the horizontal direction. Here, the electrode foil holding mechanism keeps the electrode foil 2 from moving in the horizontal direction together with the plate 32 and remains there. As a result, since the electrode foil 2 moves relative to the plate 32, the laminate 16 with burrs formed is disposed at the riveting position C on the mounting surface 31.

[0065] Next, as Figure 6 shown in FIG. (b), the electrode foil manufacturing apparatus 30 with a current collector plate lowers the stamping die 62 through the stamping die moving mechanism 65, sandwiches the laminate 15 between the stamping die 62 and the plate 32, and rivets (stamps) it. Thereby, the burr 23 penetrates the through hole 22 of the electrode foil 2 and then bends outward from the perforation 21, and presses the electrode foil 2 against the overlapping portion 10 of the current collector plate 3. Thus, the electrode foil 2 and the current collector plate 3 are connected by the riveting portion 4. The cross section of the riveting portion 4 is shown in Figure 2 FIG. Then, as Figure 6 shown in FIG. (c), the electrode foil manufacturing apparatus 30 with a current collector plate raises the stamping die 62.

[0066] (Punch Moving Mechanism, Needle Moving Mechanism, and Stamping Die Moving Mechanism)

[0067] Figure 7 Fig. 4 is a perspective view of the main part of the electrode foil manufacturing apparatus 30 with a current collector plate when viewed from above. Figure 8 Fig. 5 is a perspective view of the main part of the electrode foil manufacturing apparatus 30 with a current collector plate when viewed from the side. Figure 7 、 Figure 8 In Figs. 8 and 9, the punch 42, the needle 52, and the stamping die 62 are respectively arranged at the punch initial position Q, the needle initial position R, and the stamping die initial position S. Figure 9 Fig. 10 is a perspective view of the main part of the electrode foil manufacturing apparatus 30 with a current collector plate in a state where the lower punch 42 is pressed. Figure 10 Fig. 11 is a perspective view of the main part of the electrode foil manufacturing apparatus 30 with a current collector plate in a state where the lower needle 52 is pressed. Figure 11 Fig. 12 is a perspective view of the main part of the electrode foil manufacturing apparatus 30 with a current collector plate in a state where the lower stamping die 62 is pressed.

[0068] In the following description, three mutually orthogonal directions are defined as the X-axis direction, the Y-axis direction, and the Z-axis direction. The X-axis direction is the extending direction of the mounting surface 31 of the plate 32. In addition, the X-axis direction is the moving direction of the base 25. The Y-axis direction is the direction orthogonal to the vertical direction and the extending direction of the mounting surface 31 of the plate 32. The Z-axis direction is the vertical direction. In addition, in the following description, one side of the X-axis direction is defined as the X1 direction, and the other side is defined as the X2 direction. On the mounting surface 31 of the plate 32, the through-hole forming position A, the perforation forming position B, and the riveting position C are sequentially set from the X1-direction side to the X2-direction side. In addition, one side of the Y-axis direction is defined as the Y1 direction, and the other side of the Y-axis direction is defined as the Y2 direction. In the Z-axis direction, the lower side is defined as the Z1 direction, and the upper side is defined as the Z2 direction.

[0069] As Figure 7 、 Figure 8 shown, the punch moving mechanism 45 includes a first rod 71 (punch rod), a first rod shaft 72 that swingably supports the first rod 71, and a first rod swing mechanism 73 (punch rod swing mechanism) for swinging the first rod 71. The first rod shaft 72 extends in the X-axis direction. The first rod 71 extends in the Y-axis direction.

[0070] As Figure 8As shown, the end portion of the first rod 71 in the Y1 direction is provided with a first abutting portion 75 (punch abutting portion) that can abut against the punch 42 disposed at the punch initial position Q from the Z2 direction. A roller is mounted on the first abutting portion 75. Further, the end portion of the first rod 71 in the Y2 direction is provided with a first connecting portion 76 that is connected to the first rod swing mechanism 73. A roller is mounted on the first connecting portion 76. The first rod shaft 72 rotatably supports a portion of the first rod 71 that is closer to the first abutting portion 75 than the first connecting portion 76. A bearing is interposed between the first rod shaft 72 and the first rod 71.

[0071] The first rod swing mechanism 73 includes: a rotation shaft 77 parallel to the first rod shaft 72; a first cam 78 mounted on the rotation shaft 77; and a cam motor 79 that drives the rotation shaft 77 to rotate. The first cam 78 is located in the Z1 direction of the first connecting portion 76 of the first rod 71. The first cam 78 has on its cam surface: a first cam inner cam surface portion 78a that is close to the rotation shaft 77; a first cam outer cam surface portion 78b located at a position on the outer peripheral side relative to the first cam inner cam surface portion 78a; and a first cam connecting cam surface portion 78c that connects between them. Here, the first rod 71 is biased by a rod biasing mechanism (not shown) in the rotation direction of the first connecting portion 76 toward the Z1 direction. Therefore, the first connecting portion 76 is always in contact with the first cam 78. The first connecting portion 76 of the first rod 71 is a cam follower that frictionally moves with the first cam 78. The first rod swing mechanism 73 moves the first connecting portion 76 of the first rod 71 a predetermined distance in the Z-axis direction (vertical direction).

[0072] Further, the punch moving mechanism 45 includes a first rod shaft lifting mechanism 81 that raises and lowers the first rod shaft 72. The first rod shaft lifting mechanism 81 has: a first disk member 82; a first support mechanism 83 that supports the first disk member 82 so as to be rotatable about its central axis; and a first servo motor 84 for rotating the first disk member 82. The first rod shaft 72 is eccentrically mounted relative to the first disk member 82. That is, the central axis of the first rod shaft 72 is parallel to the rotation central axis of the first disk member 82 but not on the same line. The output of the first servo motor 84 is transmitted to the first disk member 82 via a timing belt.

[0073] As Figure 7 、 Figure 8 shown, the needle moving mechanism 55 and the stamping die moving mechanism 65 include a second rod 91 (needle rod / stamping die rod), a second rod shaft 92 that swingably supports the second rod 91, and a second rod swing mechanism 93 (needle rod swing mechanism / stamping die rod swing mechanism) for swinging the second rod 91. The second rod shaft 92 extends in the X-axis direction. The second rod 91 extends in the Y-axis direction.

[0074] The end portion of the second lever 91 in the Y1 direction is provided with a second abutting portion 95 (a needle abutting portion / a stamping die abutting portion) that can abut against the needle 52 disposed at the needle initial position R or the stamping die 62 disposed at the stamping die initial position S from the Z2 direction. A roller is mounted on the second abutting portion 95. In addition, as Figure 7 shown, the end portion of the second lever 91 in the Y2 direction is provided with a second connecting portion 96 connected to the second lever swing mechanism 93. A roller is mounted on the second connecting portion 96. The second lever shaft 92 supports a portion closer to the second abutting portion 95 than the second connecting portion 96. The second lever shaft 92 rotatably supports a portion of the second lever 91 closer to the second abutting portion 95 than the second connecting portion 96. A bearing is interposed between the second lever shaft 92 and the second lever 91.

[0075] As Figure 8 shown, the second lever swing mechanism 93 includes a second cam 98 mounted on the rotary shaft 77. The second cam 98 is located in the Z1 direction of the second connecting portion 96 of the second lever 91. The second cam 98 has on its cam surface: a second cam inner cam surface portion 98a close to the rotary shaft 77; a second cam outer cam surface portion 98b located at a position on the outer peripheral side relative to the second cam inner cam surface portion 98a; and a second cam connecting cam surface portion 98c connecting between them. Here, the second lever 91 is biased by a lever biasing mechanism (not shown) in the rotational direction of the second connecting portion 96 toward the Z1 direction. Thus, the second connecting portion 96 is always in contact with the second cam 98. The second connecting portion 96 of the second lever 91 is a cam follower that frictionally moves with the second cam 98. The second lever swing mechanism 93 moves the second connecting portion 96 of the second lever 91 a predetermined distance in the Z-axis direction (vertical direction).

[0076] In addition, the needle moving mechanism 55 and the stamping die moving mechanism 65 include a second lever shaft lifting mechanism 101 for lifting and lowering the second lever shaft 92. The second lever shaft lifting mechanism 101 has: a second disk member 102; a second support mechanism 103 that supports the second disk member 102 so as to be rotatable about its central axis; and a second servo motor 104 for rotating the second disk member 102. The second lever shaft 92 is eccentrically mounted relative to the second disk member 102. That is, the central axis of the second lever shaft 92 is parallel to the rotational central axis of the second disk member 102 but not on the same line. The output of the second servo motor 104 is transmitted to the second disk member 102 via a timing belt.

[0077] As Figure 7As shown, the end portions of the first rod shaft 72 in the X2 direction and the end portions of the second rod shaft 92 in the X1 direction are respectively supported by the rod shaft support mechanism 105. The rod shaft support mechanism 105 allows the first rod shaft 72 to move with the rotation of the first disk member 82. In addition, the rod shaft support mechanism 105 allows the second rod shaft 92 to move with the rotation of the second disk member 102. That is, the first rod shaft 72 and the second rod shaft 92 are respectively supported by the rod shaft support mechanism 105 in a state where they can move independently.

[0078] Here, Figure 7 , Figure 8 is Figure 3 the state shown. That is, the punch 42 is disposed at the punch initial position Q at the upper end of its movement range. The needle 52 is disposed at the needle initial position R at the upper end of its movement range. The stamping die 62 is disposed at the stamping die initial position S at the upper end of its movement range. In addition, the first connecting portion 76 of the first rod 71 contacts the first cam inner cam surface portion 78a of the first cam 78. The second connecting portion 96 of the second rod 91 contacts the second cam inner cam surface portion 98a of the second cam 98.

[0079] Figure 9 is Figure 4 the state shown in (a) of. Figure 9 In, the first connecting portion 76 of the first rod 71 slides from Figure 8 the state shown and reaches the first cam outer cam surface portion 78b on the first cam connection cam surface portion 78c of the first cam 78. Therefore, the first connecting portion 76 moves a predetermined distance D in the Z2 direction from Figure 7 , Figure 8 the state shown. Therefore, the first abutting portion 75 of the first rod 71 moves the punch 42 in the Z1 direction by an indentation distance E corresponding to the predetermined distance D. As a result, the first abutting portion 75 abuts against the punch 42 from the Z2 direction side, causing the punch 42 to move in the Z1 direction. Therefore, the punch 42 penetrates the electrode foil 2, and its tip is inserted into the punch receiving hole 33 provided in the plate 32. Thus, a through hole 22 is formed in the electrode foil 2.

[0080] Figure 10 is Figure 5 the state shown in (b) of. Here, during the transition from Figure 4 the (a) of and Figure 9 the state shown to Figure 5 the (b) of and Figure 10 the state shown, the base 25 slides in the X1 direction. That is, the plate 32, the punch 42, the first peeling member 43, the needle 52, the second peeling member 53, the lower arrow 58, and the stamping die 62 move in the X1 direction. The punch moving mechanism 45, the needle moving mechanism 55, and the stamping die moving mechanism 65 do not move.

[0081] Figure 10 In this case, the first connecting portion 76 of the first rod 71 slides on the cam surface of the first cam 78 and reaches the inner cam surface portion 78a of the first cam. Accordingly, the first connecting portion 76 returns to its original position. Accordingly, the first abutting portion 75 of the first rod 71 moves in the Z2 direction, and the punch 42 is disposed at the punch initial position Q.

[0082] On the other hand, the second connecting portion 96 of the second rod 91 reaches the outer cam surface portion 98b of the second cam. As a result, the second connecting portion 96 moves upward by a predetermined distance D from the Figure 9 state shown. Accordingly, the second abutting portion 95 of the second rod 91 moves in the Z1 direction by an insertion distance E corresponding to the predetermined distance D. As a result, the second abutting portion 95 of the second rod 91 abuts against the needle 52 from the Z2 direction side, causing the needle 52 to move in the Z1 direction. As a result, the needle 52 penetrates the current collector plate 3 and the electrode foil 2 from the Z2 direction side, and its tip is inserted into the needle receiving hole 34 provided in the plate 32. Accordingly, a through hole 21 is formed in the overlapping portion 10 of the current collector plate 3, and burrs 23 that penetrate the electrode foil 2 from the opening edge of the through hole 21 and protrude to the opposite side of the overlapping portion 10 are formed.

[0083] Figure 11 is Figure 6 the state shown in (b) of. Here, during the transition from the Figure 5 state (b) of and Figure 10 the state shown to the Figure 6 state (b) of and Figure 11 the state shown, the second connecting portion 96 of the second rod 91 slides on the cam surface of the second cam 98 and reaches the inner cam surface portion 98a of the second cam. Accordingly, as Figure 5 shown in (c) of, the second connecting portion 96 temporarily returns to its original position, and the needle 52 is disposed at the needle initial position R. Then, as Figure 6 shown in (a) of, the base 25 slides in the X1 direction. That is, the plate 32, the punch 42, the first peeling member 43, the needle 52, the second peeling member 53, the lower arrow 58, and the stamping die 62 move in the X1 direction. Here, the punch moving mechanism 45, the needle moving mechanism 55, and the stamping die moving mechanism 65 do not move. Accordingly, as Figure 6 shown in (b) of and Figure 11 the state shown, the first rod 71 is located in the Z2 direction of the needle 52, and the second rod 91 is located in the Z2 direction of the stamping die 62. As a result, the second rod 91, the second rod shaft 92, and the second rod swing mechanism 93 form the stamping die moving mechanism 65.

[0084] The stamping die moving mechanism 65 includes: a second rod 91 (rod for stamping die); a second rod shaft 92 that swingably supports the second rod 91; and a second rod swinging mechanism 93 for swinging the second rod 91. The end portion of the second rod 91 in the Y1 direction is provided with a second abutting portion 95 (stamping die abutting portion) that can abut against the stamping die 62 disposed at the initial position S of the stamping die from the Z2 direction. A roller is mounted on the second abutting portion 95. In addition, the end portion of the second rod 91 in the Y2 direction is provided with a second connecting portion 96 connected to the second rod swinging mechanism 93. A roller is mounted on the second connecting portion 96. The second rod shaft 92 supports a portion closer to the second abutting portion 95 than the second connecting portion 96. The second rod swinging mechanism 93 moves the end portion on the other side of the second rod 91 a predetermined distance D in the Z-axis direction.

[0085] In addition, the stamping die moving mechanism 65 includes a second rod shaft lifting mechanism 101 for lifting and lowering the second rod shaft 92. The second rod shaft lifting mechanism 101 has: a second disk member 102; a second support mechanism 103 that supports the second disk member 102 so as to be rotatable about its central axis; and a second servo motor 104 for rotating the second disk member 102. The second rod shaft 92 is eccentrically mounted with respect to the second disk member 102.

[0086] Here, Figure 11 In the state shown, the second connecting portion 96 of the second rod 91 reaches the second cam outer cam surface portion 98b of the second cam 98. As a result, the second connecting portion 96 moves upward a predetermined distance D from the state where the second connecting portion 96 is in contact with the second cam inner cam surface portion 98a of the second cam 98. Therefore, the second abutting portion 95 of the second rod 91 moves a press-in distance E corresponding to the predetermined distance D in the Z1 direction. As a result, the second abutting portion 95 of the second rod 91 abuts against the stamping die 62 from the Z2 direction side, causing the stamping die 62 to move in the Z1 direction. Therefore, the stamping die 62 approaches the plate 32 from the Z2 direction side and clamps the laminated body 16 with burrs formed therebetween, causing the burrs 23 to plastically deform toward the outer peripheral side of the perforation 21 to form the riveted portion 4 of the fixed electrode foil 2 and the current collector plate 3.

[0087] (Effect of lifting and lowering the second rod shaft)

[0088] Figure 12 It is an explanatory diagram of the needle moving mechanism 55 that raises the second rod shaft 92. Figure 13 It is an explanatory diagram of the needle moving mechanism 55 that lowers the second rod shaft 92. Here, in the needle moving mechanism 55 (second rod shaft lifting mechanism 101), the second rod shaft 92 is mounted on the second disk member 102 in a state eccentric with respect to the rotation center axis of the second disk member 102. In this example, the eccentricity of the second rod shaft 92 with respect to the second disk member 102 is 3 mm.

[0089] Figure 12 In (a), it is the initial state where the central axis of the second rod shaft 92 is at the same height as the rotation central axis of the first disk member 82. In this state, when the second rod swing mechanism 93 moves the second connection portion of the second rod 91 a specified distance D in the Z2 direction, the second abutting portion 95 of the second rod 91 moves a press-in distance E in the Z1 direction. As a result, the needle 52 located at the needle initial position R moves a movement amount F in the Z1 direction.

[0090] When starting from Figure 12 the state shown in (a) and driving and controlling the second servo motor 104 to rotate the second disk member 102 60° clockwise from the initial state, as shown in Figure 12 (b), the second rod shaft 92 moves (rises) approximately 1.5 mm in the Z2 direction. As a result, the movement range of the second abutting portion 95 of the second rod 91 moving a press-in distance E in the Z1 direction varies approximately 1.5 mm in the Z2 direction with respect to the movement range of the first abutting portion 75 in the initial state. Therefore, the movement amount G1 of the second rod 91 moving the needle 52 located at the needle initial position R in the Z1 direction is approximately 1.5 mm shorter than the movement amount F.

[0091] Figure 13 (a) is the same as Figure 12 (a), which is the initial state where the central axis of the second rod shaft 92 is at the same height as the rotation central axis of the first disk member 82. When driving and controlling the second servo motor 104 from this state to rotate the second disk member 102 60° counterclockwise from the initial state, as shown in Figure 13 (b), the second rod shaft 92 moves (descends) approximately 1.5 mm in the Z1 direction. As a result, the movement range of the second abutting portion 95 of the second rod 91 moving a press-in distance E in the Z1 direction varies approximately 1.5 mm in the Z1 direction with respect to the movement range of the first abutting portion 75 in the initial state. Therefore, the movement amount G2 of the second rod 91 moving the needle 52 located at the needle initial position R in the Z1 direction is approximately 1.5 mm longer than the movement amount F.

[0092] Therefore, if the second disk member 102 is rotated by driving and controlling the first servo motor 84 to move the second rod shaft 92 in the Z-axis direction, the movement amount F of the second rod 91 moving the needle 52 in the Z1 direction can be adjusted.

[0093] Here, the same effect can also be achieved in the stamping die moving mechanism 65. That is, in the stamping die moving mechanism 65, when the second servo motor 104 that drives and controls the second rod shaft lifting mechanism 101 rotates the second disk member 102 to lift and lower the second rod shaft 92 in the Z-axis direction, accordingly, the moving range of the second contact portion 95 of the second rod 91 that contacts the stamping die 62 from the Z2 direction side varies in the Z-axis direction. Therefore, the moving amount of the stamping die 62 that is pressed downward by the second contact portion 95 can be adjusted. In addition, the same effect can also be achieved in the punch moving mechanism 45. That is, in the punch moving mechanism 45, when the first servo motor 84 that drives and controls the first rod shaft lifting mechanism 81 rotates the first disk member 82 to lift and lower the first rod shaft 72 in the Z-axis direction, accordingly, the moving range of the first contact portion 75 of the first rod 71 that contacts the punch 42 from the Z2 direction side varies in the Z-axis direction. Therefore, the moving amount of the punch 42 that is pressed and moves in the Z1 direction by the first contact portion 75 can be adjusted.

[0094] (Effect)

[0095] In the electrode foil manufacturing apparatus 30 with a current collector plate, if the depth at which the needle 52 penetrates the current collector plate 3 and the electrode foil 2 is shallow, there will be a problem that burrs 23 that become riveted portions cannot be formed well when they are stamped. In addition, if the depth at which the needle 52 penetrates the current collector plate 3 and the electrode foil 2 is deep, the needle 52 is easily worn, and the needle 52 has to be frequently replaced. Therefore, every time the electrode foil 2 and / or the current collector plate 3 used in manufacturing are changed, the depth at which the needle 52 penetrates the current collector plate 3 and the electrode foil 2 must be adjusted corresponding to the thickness of the electrode foil 2 and / or the thickness of the current collector plate 3.

[0096] In contrast, in this example, the needle moving mechanism 55 includes: a second rod 91 (needle rod), which has a second abutting portion 95 (needle abutting portion) at its end portion in the Y1 direction and can abut against the needle 52 from one side in the Z2 direction; a second rod shaft 92, which swingably supports the second rod 91; and a second rod swing mechanism 93, which moves the end portion (second connecting portion 96) of the second rod 91 in the Y2 direction by a predetermined distance D in the Z-axis direction. Therefore, when the second connecting portion 96 is moved by a predetermined distance D to the Z2 direction side by the second rod swing mechanism 93, the second rod 91 swings around the second rod shaft 92. As a result, the second abutting portion 95 of the second rod 91 moves downward by a pressing distance E corresponding to the predetermined distance D, and the needle 52 moves in the Z1 direction. In addition, the needle moving mechanism 55 includes a second rod shaft lifting mechanism 101 for lifting and lowering the second rod shaft 92. If the second rod shaft lifting mechanism 101 moves the second rod shaft 92, which is the swing center of the second rod 91, in the Z2 direction, the moving range of the second abutting portion 95 of the second rod 91 changes in the Z2 direction. Therefore, the moving amount of the second rod 91 for moving the needle 52 located at the needle initial position R in the Z1 direction decreases. On the other hand, if the second rod shaft 92, which is the rotation center of the second rod 91, is moved in the Z1 direction, the moving range of the second abutting portion 95 of the second rod 91 changes in the Z1 direction. Therefore, the moving amount of the second rod 91 for moving the needle 52 located at the needle initial position R in the Z1 direction increases. Therefore, by lifting and lowering the second rod shaft 92 by the first rod shaft lifting mechanism 81, the moving amount of the needle 52 passing through the current collecting plate 3 and the electrode foil 2 can be adjusted.

[0097] In addition, the second rod shaft lifting mechanism 101 includes: a second disk member 102; a second support mechanism 103 for supporting the second disk member 102 so that it can rotate around its central axis; and a second servo motor 104 for rotating the second disk member 102; the second rod shaft 92 is eccentrically installed with respect to the second disk member 102. Therefore, by rotating the second disk member 102 by the second servo motor 104, the second rod shaft 92 can be lifted and lowered. In addition, with such a structure, compared with the case of directly lifting and lowering the second rod shaft 92 using a linear actuator, it is easier to lift and lower the second rod shaft 92 with high resolution. Here, if the second servo motor 104 is used, the height position of the second rod shaft 92 can be accurately arranged at a desired position. Therefore, the reproducibility when arranging the height position of the second rod shaft 92 at a desired position is high. Therefore, the height position of the second rod shaft 92 can be adjusted based on the thickness of the current collecting plate 3 and / or the thickness of the electrode foil 2.

[0098] In addition, the second rod swing mechanism 93 includes a rotation shaft 77 parallel to the second rod shaft 92, a second cam 98 mounted on the rotation shaft 77, and a cam motor 79 that drives the rotation shaft 77 to rotate. The second connection portion 96 of the second rod 91 is a cam follower that slidably contacts the second cam 98. Therefore, it is easy to move the second connection portion 96 of the second rod 91 by a predetermined distance.

[0099] Next, in the electrode foil manufacturing apparatus 30 with a current collector plate, when the stamping amount of the stamping die 62 for stamping the current collector plate 3 and the electrode foil 2 from the Z2 direction side is insufficient, that is, when the moving amount of the stamping die 62 moving toward the current collector plate 3 and the electrode foil 2 is insufficient, the formation of the riveted portion is insufficient and the bonding between the current collector plate and the electrode foil 2 becomes loose. When the stamping amount of the stamping die 62 for stamping the current collector plate 3 and the electrode foil 2 from the Z2 direction side is excessive, that is, when the moving amount of the stamping die 62 moving toward the current collector plate 3 and the electrode foil 2 is excessive, cracks and / or breakage may occur on the current collector plate 3 or the electrode foil 2. Therefore, every time the electrode foil 2 and / or the current collector plate 3 used in manufacturing is changed, it is necessary to adjust the moving amount of the stamping die 62 moving toward the current collector plate 3 and the electrode foil 2 corresponding to the thickness of the electrode foil 2 and / or the thickness of the current collector plate 3.

[0100] In contrast, in this example, the stamping die moving mechanism 65 includes: a second rod 91 (rod for stamping die), which has a second abutting portion 95 (stamping die abutting portion) at its end portion in the Y1 direction and can abut against the stamping die 62 from one side in the Z2 direction; a second rod shaft 92, which swingably supports the second rod 91; and a second rod swinging mechanism 93, which moves the end portion on the other side of the second rod 91 a predetermined distance D in the Z2 direction. Therefore, by the second rod swinging mechanism 93 moving the second connecting portion 96 of the second rod 91 a predetermined distance D in the Z2 direction, the second rod 91 can swing around the second rod shaft 92. As a result, the stamping die abutting portion of the second rod 91 moves a pressing distance E corresponding to the predetermined distance D in the Z1 direction, causing the stamping die 62 to move in the Z1 direction. In addition, the stamping die moving mechanism 65 includes a second rod shaft lifting mechanism 101 for lifting and lowering the second rod shaft 92. If the second rod shaft lifting mechanism 101 moves the second rod shaft 92, which is the swing center of the second rod 91, in the Z-axis direction, the moving range of the second abutting portion 95 of the second rod 91 changes in the Z-axis direction. Therefore, the moving amount of the second rod 91 for moving the stamping die 62 located at the stamping die initial position S in the Z1 direction decreases. On the other hand, if the second rod shaft lifting mechanism 101 moves the second rod shaft 92 in the Z1 direction, the moving range of the second abutting portion 95 of the second rod 91 changes in the Z1 direction. Therefore, the moving amount of the second rod 91 for moving the stamping die 62 located at the stamping die initial position S in the Z1 direction increases. Therefore, by lifting and lowering the second rod shaft 92 by the second rod shaft lifting mechanism 101, the moving amount of the stamping die 62 penetrating the current collecting plate 3 and the electrode foil 2 can be adjusted.

[0101] In addition, the second rod shaft lifting mechanism 101 includes: a second disk member 102; a second support mechanism 103 that supports the second disk member 102 so that it can rotate around its central axis; and a second servo motor 104 for rotating the second disk member 102; the second rod shaft 92 is eccentrically installed with respect to the second disk member 102. Therefore, by rotating the second disk member 102 by the second servo motor 104, the second rod shaft 92 can be lifted and lowered. In addition, according to such a structure, compared with the case of directly lifting and lowering the second rod shaft 92 using a direct-acting actuator, it is easier to lift and lower the second rod shaft 92 with high resolution. Here, if the second servo motor 104 is used, the height position of the second rod shaft 92 can be accurately arranged at a desired position. Therefore, the reproducibility when arranging the height position of the second rod shaft 92 at a desired position is high. Therefore, the height position of the second rod shaft 92 can be adjusted based on the thickness of the current collecting plate 3 and / or the thickness of the electrode foil 2.

[0102] In addition, the second rod swing mechanism 93 includes a rotation shaft 77 parallel to the second rod shaft 92, a second cam 98 mounted on the rotation shaft 77, and a cam motor 79 that drives the rotation shaft 77 to rotate. The second connection portion 96 of the second rod 91 is a cam follower that slidably contacts the second cam 98. Therefore, it is easy to move the second connection portion 96 of the second rod 91 by a specified distance.

[0103] In addition, in the electrode foil manufacturing apparatus 30 with a current collector plate, if the depth to which the punch 42 penetrates the electrode foil 2 is shallow, there will be a problem that holes are not formed in the electrode foil 2. If the depth to which the punch 42 penetrates the electrode foil 2 is deep, the punch 42 is easily worn, and the punch 42 has to be frequently replaced. Therefore, every time the electrode foil 2 used in manufacturing is changed, it is necessary to adjust the depth to which the punch 42 penetrates the current collector plate 3 corresponding to the thickness of the electrode foil 2.

[0104] In contrast, in this example, the punch moving mechanism 45 includes: a first rod 71 (punch rod), which has a first abutting portion 75 (punch abutting portion) at its end portion in the Y1 direction and can abut against the punch 42 from one side in the Z2 direction; a first rod shaft 72 that swingably supports the first rod 71; and a first rod swing mechanism 73 that can move the end portion of the first rod 71 in the Y2 direction by a specified distance D along the Z axis. Therefore, by moving the second connection portion 96 of the first rod 71 in the Z2 direction by the specified distance D by the first rod swing mechanism 73, the first rod 71 swings around the first rod shaft 72. As a result, the first abutting portion 75 of the first rod 71 moves in the Z1 direction by a pressing distance E corresponding to the specified distance D, and the punch 42 moves in the Z1 direction. In addition, the punch moving mechanism 45 includes a first rod shaft lifting mechanism 81 that raises and lowers the first rod shaft 72. If the first rod shaft lifting mechanism 81 moves the first rod shaft 72, which is the swing center of the first rod 71, in the Z2 direction, the moving range of the first abutting portion 75 of the first rod 71 changes in the Z2 direction. Therefore, the moving amount of the first rod 71 that moves the punch 42 located at the punch initial position Q in the Z1 direction decreases. On the other hand, if the first rod shaft 72, which is the rotation center of the first rod 71, is moved in the Z1 direction, the moving range of the first abutting portion 75 of the first rod 71 changes in the Z1 direction. Therefore, the moving amount of the first rod 71 that moves the punch 42 located at the punch initial position Q in the Z1 direction increases. Therefore, by raising and lowering the first rod shaft 72 by the first rod shaft lifting mechanism 81, the moving amount of the punch 42 that penetrates the electrode foil 2 can be adjusted.

[0105] In addition, the first rod shaft lifting mechanism 81 includes: a first disk member 82; a first support mechanism 83 that supports the first disk member 82 so as to be rotatable about its central axis; and a first servo motor 84 for rotating the first disk member 82; the first rod shaft 72 is eccentrically mounted with respect to the first disk member 82. Therefore, by rotating the first disk member 82 by the first servo motor 84, the first rod shaft 72 can be lifted and lowered. In addition, according to such a structure, compared with the case of directly lifting and lowering the first rod shaft 72 using a linear actuator, it is easier to lift and lower the first rod shaft 72 with high resolution. Here, if the first servo motor 84 is used, the height position of the first rod shaft 72 can be accurately arranged at a desired position. Therefore, the reproducibility when arranging the height position of the first rod shaft 72 at a desired position is high. Therefore, the height position of the first rod shaft 72 can be adjusted based on the thickness of the electrode foil 2.

[0106] In addition, the first rod swing mechanism 73 includes a rotation shaft 77 parallel to the first rod shaft 72, a first cam 78 mounted on the rotation shaft 77, and a cam motor 79 for driving the rotation shaft 77 to rotate. The first connection portion 76 of the first rod 71 is a cam follower that slidably contacts the first cam 78. Therefore, it is easy to move the first connection portion 76 of the first rod 71 by a predetermined distance D.

[0107] (Modification example)

[0108] The rotation shaft 77 on which the first cam 78 is mounted in the first rod swing mechanism 73 and the rotation shaft 77 on which the second cam 98 is mounted in the second rod swing mechanism 93 can be different members. In this case, a cam motor for rotating the rotation shaft on which the first cam 78 is mounted and a cam motor for rotating the rotation shaft on which the second cam 98 is mounted are independently provided. In this way, the first cam 78 and the second cam 98 can be rotated independently of each other.

Claims

1. An electrode foil manufacturing device with a collector plate, characterized in that: have: a plate supporting a stacked body from below, the stacked body comprising an electrode foil and a current collector plate, the current collector plate comprising an overlapping portion overlapping above the electrode foil; Needle; as well as a needle piercing mechanism that causes the needle to penetrate the laminate from above and inserts the tip of the needle into a needle receiving hole provided in the plate, thereby forming a perforation in the overlapping portion and a burr that penetrates the electrode foil from the opening edge of the perforation and protrudes to the opposite side of the overlapping portion; The acupuncture mechanism comprises: a needle support mechanism that supports the needle so that it can move in the up-down direction; a needle force mechanism that applies force to the needle toward the needle initial position R that is upwardly separated from the plate; and a needle moving mechanism that moves the needle downward from the needle initial position R; The needle moving mechanism comprises: a needle rod, which has a needle abutment portion at one end portion thereof that can abut the needle arranged at the needle initial position R from the Z2 direction; a rod shaft, which supports the needle rod so as to be able to swing; a needle rod swinging mechanism, which moves the end portion on the other side of the needle rod upward a specified distance; and a rod shaft lifting mechanism, which lifts and lowers the rod shaft.

2. The manufacturing device of electrode foil with current collector plate according to claim 1, characterized in that: The rod shaft lifting mechanism comprises: a disc member; a support mechanism that supports the disc member so as to be rotatable around the central axis of the disc member; and a servo motor that is used to rotate the disc member; The shaft is mounted eccentrically relative to the disc member.

3. The manufacturing device of electrode foil with current collector plate according to claim 2, characterized in that: The needle lever swing mechanism comprises: a rotating shaft parallel to the lever shaft; a cam mounted on the rotating shaft; and a cam motor for driving the rotating shaft to rotate; The other end portion of the needle rod is a cam follower that is in sliding contact with the cam.

4. An electrode foil manufacturing device with a collector plate, characterized in that: have: A plate supporting a laminated body with burrs formed thereon from below, the laminated body with burrs formed thereon comprising an electrode foil and a collector plate, the collector plate comprising an overlapping portion overlapping above the electrode foil, the overlapping portion of the collector plate being provided with a perforation and a burr penetrating through the electrode foil from an opening edge of the perforation and protruding to the opposite side of the overlapping portion; Stamping dies; as well as a riveting mechanism that causes the punching die to approach the plate from above and clamps the laminated body with the burrs formed thereon between the punching die and the plate, so that the burrs are plastically deformed toward the outer peripheral side of the perforation to form a riveted portion that fixes the electrode foil and the collector plate; The riveting mechanism comprises: a stamping die supporting mechanism, which supports the stamping die so as to be movable in the up-down direction; a stamping die applying mechanism, which applies force to the stamping die toward the initial position of the stamping die away from the plate upward; and a stamping die moving mechanism, which moves the stamping die downward from the initial position of the stamping die; The stamping die moving mechanism comprises: a stamping die rod, wherein the end portion on one side comprises a stamping die abutting portion capable of abutting the stamping die arranged at the initial position of the stamping die from the Z2 direction; a rod shaft, which supports the stamping die rod so as to be able to swing; a stamping die rod swinging mechanism, which moves the end portion on the other side of the stamping die rod upward by a specified distance; and a rod shaft lifting mechanism, which lifts and lowers the rod shaft.

5. The manufacturing device of electrode foil with current collector plate according to claim 4, characterized in that: The rod shaft lifting mechanism comprises: a disc member; a support mechanism that supports the disc member so as to be rotatable around the central axis of the disc member; and a servo motor that is used to rotate the disc member; The shaft is mounted eccentrically relative to the disc member.

6. The manufacturing device of electrode foil with current collector plate according to claim 5, characterized in that: The press die rod swing mechanism comprises: a rotating shaft parallel to the rod axis; a cam mounted on the rotating shaft; and a cam motor for driving the rotating shaft to rotate; The other end portion of the punch die rod is a cam follower that comes into sliding contact with the cam.

7. An electrode foil manufacturing device with a collector plate, characterized in that: have: a plate that supports the electrode foil from below; Punch; as well as a hole-opening mechanism that causes the punch to penetrate the electrode foil from above and inserts the tip of the punch into a punch receiving hole provided in the plate to form a through hole in the electrode foil; The punching mechanism comprises: a punch supporting mechanism that supports the punch so that it can move in the up-down direction; a punch applying mechanism that applies force to the punch toward the punch initial position Q that is away from the plate upward; and a punch moving mechanism that moves the punch downward from the punch initial position Q; The punch moving mechanism comprises: a punch rod, which has a punch abutment portion at one end portion thereof that can abut the punch arranged at the punch initial position Q from the Z2 direction; a rod shaft that supports the punch rod so that it can swing; a punch rod swinging mechanism that moves the other end portion of the punch rod upward a specified distance; and a rod shaft lifting mechanism that lifts and lowers the rod shaft.

8. The manufacturing device of electrode foil with current collector plate according to claim 7, characterized in that: The rod shaft lifting mechanism comprises: a disc member; a support mechanism that supports the disc member so as to be rotatable around the central axis of the disc member; and a servo motor that is used to rotate the disc member; The shaft is mounted eccentrically relative to the disc member.

9. The manufacturing device of electrode foil with current collector plate according to claim 8, characterized in that: The punch rod swing mechanism comprises: a rotating shaft parallel to the rod axis; a cam mounted on the rotating shaft; and a cam motor for driving the rotating shaft to rotate; The other end portion of the punch rod is a cam follower that is in sliding contact with the cam.

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