Electrode foil manufacturing equipment with current collector plate

Abstract

To provide a manufacturing apparatus for a current collection plate attached electrode foil, in which a movement amount of a needle penetrating a current collection plate and an electrode foil can be adjusted.SOLUTION: A needle moving mechanism 55 of a manufacturing apparatus 30 for a current collection plate attached electrode foil includes: a second lever 91 that includes a second contact part 95 capable of coming into contact with an end part in a Y1 direction of a needle 52 from a side in a Z2 direction; a second lever shaft 92 that can swingably support the second lever 91; and a second lever swinging mechanism 93 that moves an end part of the second lever 91 in a Y2 direction by a predetermine distance D to a Z-axis direction. The needle moving mechanism 55 includes a second lever shaft lifting mechanism 101 that lifts and lowers the second lever shaft 92. When the second lever shaft lifting mechanism 101 moves the second lever shaft 92 that is a swinging center of the second lever 91 to the Z-axis direction, a moving range of the second contact part 95 shifts to the Z-axis direction. Therefore, an amount of moving the needle 52 at an initial needle position R by the second lever 91 to the Z-axis direction can be adjusted.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Patent Document 1 describes an electrode foil manufacturing apparatus with a current collector plate. In this document, the electrode foil manufacturing apparatus first penetrates a chemically coated electrode foil from above with a punch pin to form a hole. The current collector plate is then placed over the hole and a piercing needle is inserted into the hole from the current collector plate side to form a burr on the back surface of the electrode foil. The electrode foil manufacturing apparatus then compresses the electrode foil and current collector plate by pressing a press mold from above, thereby plastically deforming the burr and forming a crimped portion. This secures the electrode foil and current collector plate together.

[0003] In this document, the needle is held at the bottom end of a needle holder. The needle holder is supported on a base of the device so that it can move up and down. A cam follower that rubs against a cam is provided at the top end of the needle holder. When the cam rotates above the needle holder, the needle holder is pressed downward, causing the needle to pierce the current collecting plate and electrode foil. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-282364 Summary of the Invention [Problem to be solved by the invention]

[0005] If the penetration depth of the piercing needle between the current collector plate and the electrode foil is shallow, a problem occurs in that burrs that become crimped portions are not formed well when the piercing needle is pressed. Furthermore, if the penetration depth of the piercing needle between the current collector plate and the electrode foil is deep, the piercing needle is prone to wear, requiring frequent replacement. Therefore, whenever the electrode foil or current collector plate used in manufacturing is changed, the penetration depth of the piercing needle between the current collector plate and the electrode foil must be adjusted to correspond to the thickness of the electrode foil or the current collector plate.

[0006] Furthermore, if the press die does not press the current collector plate and electrode foil from above by an insufficient amount, i.e., if the press die does not move toward the current collector plate and electrode foil by an insufficient amount, the crimped portion will not be formed sufficiently, and the bond between the current collector plate and the electrode foil will be loose. If the press die presses the current collector plate and electrode foil from above by an excessively large amount, i.e., if the press die moves toward the current collector plate and electrode foil by an excessively large amount, cracks or tears may occur in the current collector plate or electrode foil. Therefore, whenever the electrode foil or current collector plate used in manufacturing is changed, the amount of movement of the press die toward the current collector plate and electrode foil must be adjusted to correspond to the thickness of the electrode foil or current collector plate.

[0007] Furthermore, if the punch pin penetrates the electrode foil too shallowly, a hole may not be formed in the electrode foil. If the punch pin penetrates the electrode foil too deeply, the punch pin is more likely to wear out and must be replaced more frequently. Therefore, whenever the electrode foil used in manufacturing is changed, the penetration depth of the punch pin into the current collector plate must be adjusted to correspond to the thickness of the electrode foil.

[0008] In view of the above problems, an object of the present invention is to provide an apparatus for manufacturing electrode foil with a current collector plate, which is capable of adjusting the amount of movement of a needle that penetrates the current collector plate and the electrode foil. The present invention provides an electrode foil manufacturing apparatus with a current collector plate that can adjust the amount of movement of a punch pin when the punch pin forms a through hole in the electrode foil. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention provides an electrode foil with current collector plate manufacturing apparatus that includes a plate that supports, from below, a laminate that includes electrode foil and a current collector plate that has an overlapping portion that overlaps the electrode foil, a needle, and a needle driving mechanism that penetrates the laminate from above and inserts the tip of the needle into a needle receiving hole provided in the plate, to form a hole in the overlapping portion and a burr that penetrates the electrode foil from the opening edge of the hole and protrudes to the opposite side from the overlapping portion, and the needle driving mechanism includes a needle support that supports the needle so that the needle can be moved up and down. a needle biasing mechanism that biases the needle to a needle initial position above the plate, and a needle moving mechanism that moves the needle downward from the needle initial position, wherein the needle moving mechanism comprises a needle lever having a needle abutment portion at one end that can abut from above against the needle placed at the needle initial position, a lever shaft that supports the needle lever so that it can swing, a needle lever swinging mechanism that moves the other end of the needle lever upward by a predetermined distance, and a lever shaft lifting mechanism that raises and lowers the lever shaft.

[0010] According to the present invention, the needle movement mechanism includes a needle lever having a needle abutment at one end that can abut against the needle from above, a lever shaft that swingably supports the needle lever, and a needle lever swinging mechanism that moves the other end of the needle lever upward a predetermined distance. Therefore, when the needle lever swinging mechanism moves the other end of the needle lever upward a predetermined distance, the needle lever swings around the lever shaft. Therefore, the needle abutment of the needle lever moves downward a push-in distance corresponding to the predetermined distance, moving the needle downward. This causes the needle to form a perforation and a burr in the overlapping portion. The needle movement mechanism also includes a lever shaft lifting mechanism that raises and lowers the lever shaft. Here, when the lever shaft lifting mechanism moves the lever shaft, which is the swing center of the needle lever, upward, the range of movement of the needle abutment of the needle lever shifts upward, thereby reducing the amount of downward movement of the needle abutment, which is in the initial needle position. On the other hand, if the lever shaft, which is the rotation center of the needle lever, is moved downward, the movement range of the needle abutment of the needle lever shifts downward, and the amount of downward movement of the needle, whose needle abutment is in the needle initial position, increases. Therefore, by raising and lowering the lever shaft with the lever shaft lifting mechanism, the amount of movement of the needle penetrating the current collecting plate and the electrode foil can be adjusted. Therefore, each time the electrode foil or current collecting plate used in manufacturing is changed, the depth to which the needle penetrates the current collecting plate and the electrode foil can be adjusted to correspond to the thickness of the electrode foil or the current collecting plate.

[0011] In the present invention, the lever shaft lifting mechanism may include a disk member, a support mechanism that supports the disk member rotatably around its central axis, and a servomotor for rotating the disk member, with the lever shaft being eccentrically attached to the disk member. In this manner, the lever shaft can be raised and lowered by rotating the disk member using the servomotor. This also facilitates raising and lowering the lever shaft with higher resolution than when a direct-acting actuator is used to directly raise and lower the lever shaft. Furthermore, using a servomotor as a drive source allows the lever shaft to be accurately positioned at a desired height. Therefore, the reproducibility of positioning the lever shaft at a desired position is high. Therefore, when the electrode foil or current collector plate used in manufacturing is changed, the height position of the lever shaft can be adjusted based on the thickness of the current collector plate or the electrode foil.

[0012] In the present invention, the needle lever swing mechanism comprises a rotary shaft parallel to the lever shaft, a cam attached to the rotary shaft, and a cam motor that rotates the rotary shaft, and the other end portion of the needle lever can be a cam follower that slides against the cam. In this way, the other end portion of the needle lever can be moved by a predetermined distance. It is easy to do this.

[0013] Next, the manufacturing apparatus for electrode foil with current collector plate of the present invention includes a plate that supports from below a burr-formed laminate that includes electrode foil and a current collector plate with an overlapping portion that overlaps the electrode foil, and that has perforations in the overlapping portion of the current collector plate and burrs that penetrate the electrode foil from the opening edge of the perforations and protrude to the opposite side of the overlapping portion; a press die; and a crimping mechanism that brings the press die close to the plate from above to sandwich the burr-formed laminate between the press die and the plate, and plastically deforms the burrs toward the outer periphery of the perforations to form crimped portions that fix the electrode foil and the current collector plate, and the crimping mechanism is configured to move the press die in a vertical direction. a press die supporting mechanism for supporting the press die on the plate; a press die biasing mechanism for biasing the press die to a press die initial position away from the plate; and a press die moving mechanism for moving the press die downward from the press die initial position, wherein the press die moving mechanism comprises: a press die lever having a press die abutment at one end portion thereof that can abut from above against the press die arranged at the press die initial position; a lever shaft for swingably supporting the press die lever; a press die lever swinging mechanism for moving the other end portion of the press die lever upward by a predetermined distance; and a lever shaft lifting mechanism for raising and lowering the lever shaft.

[0014] According to the present invention, the press die moving mechanism includes a press die lever having a press die abutment portion at one end that can abut against the press die from above, a lever shaft that swingably supports the press die lever, and a press die lever swinging mechanism that moves the other end of the press die lever upward a predetermined distance. Therefore, when the press die lever swinging mechanism moves the other end of the press die lever upward a predetermined distance, the press die lever swings around the lever shaft. Therefore, the press die abutment portion of the press die lever moves downward a push-in distance corresponding to the predetermined distance, moving the press die downward. As a result, the press die presses the burr-formed laminate to form a crimped portion. The press die moving mechanism also includes a lever shaft lifting mechanism that raises and lowers the lever shaft. Here, when the lever shaft lifting mechanism moves the lever shaft, which is the center of swing of the press die lever, upward, the range of movement of the press die abutment portion of the press die lever shifts upward, thereby decreasing the amount of downward movement of the press die, which is in its initial position. On the other hand, when the lever shaft, which is the center of rotation of the press die lever, shifts downward, the range of movement of the press die abutment portion of the press die lever shifts downward, thereby increasing the amount of downward movement of the press die, which is in its initial position. Therefore, by raising and lowering the lever shaft with the lever shaft lifting mechanism, the amount of movement of the press die that presses the burr-formed laminate can be adjusted. Therefore, whenever the electrode foil or current collector plate used in production is changed, the amount of movement of the press die toward the burr-formed laminate can be adjusted to correspond to the thickness of the electrode foil or current collector plate.

[0015] In the present invention, the lever shaft lifting mechanism may include a disk member, a support mechanism that supports the disk member rotatably around its central axis, and a servomotor for rotating the disk member, with the lever shaft being eccentrically attached to the disk member. In this manner, the lever shaft can be raised and lowered by rotating the disk member using the servomotor. This also facilitates raising and lowering the lever shaft with higher resolution than when a direct-acting actuator is used to directly raise and lower the lever shaft. Furthermore, using a servomotor as a drive source allows the lever shaft to be accurately positioned at a desired height. Therefore, the reproducibility of positioning the lever shaft at a desired position is high. Therefore, when the electrode foil or current collector plate used in manufacturing is changed, the height position of the lever shaft can be adjusted based on the thickness of the current collector plate or the electrode foil.

[0016] In the present invention, the press die lever swing mechanism includes a rotation shaft parallel to the lever shaft, a cam attached to the rotation shaft, and a cam motor that rotates the rotation shaft. The other end portion of the press die lever may be a cam follower that slides against the cam, making it easy to move the other end portion of the press die lever a predetermined distance.

[0017] Next, the manufacturing apparatus for electrode foil with current collector plate of the present invention comprises: a plate that supports the electrode foil from below; a punch pin; and a hole-punching mechanism that penetrates the punch pin from above into the electrode foil and inserts the tip of the punch pin into a punch pin receiving hole provided in the plate to form a through hole in the electrode foil, wherein the hole-punching mechanism comprises: a punch pin support mechanism that supports the punch pin so that it can move up and down; a punch pin biasing mechanism that biases the punch pin to a punch pin initial position above and away from the plate; and a punch pin moving mechanism that moves the punch pin downward from the punch pin initial position, wherein the punch pin moving mechanism comprises: a punch pin lever that has a punch pin abutment portion at one end portion that can abut from above against the punch pin arranged at the punch pin initial position; a lever shaft that swingably supports the punch pin lever; a punch pin lever swinging mechanism that moves the other end portion of the punch pin lever upward by a predetermined distance; and a lever shaft lifting mechanism that raises and lowers the lever shaft.

[0018] According to the present invention, the punch pin moving mechanism includes a punch pin lever having a punch pin abutment portion at one end portion that can abut against the punch pin from above, a lever shaft that swingably supports the punch pin lever, and a punch pin lever swinging mechanism that moves the other end portion of the punch pin lever upward a predetermined distance. Therefore, when the punch pin lever swinging mechanism moves the other end portion of the punch pin lever upward a predetermined distance, the punch pin lever swings around the lever shaft. Therefore, the punch pin abutment portion of the punch pin lever moves downward a push-in distance corresponding to the predetermined distance, moving the punch pin downward. As a result, the punch pin forms a through hole in the electrode foil. The punch pin moving mechanism also includes a lever shaft elevating mechanism that raises and lowers the lever shaft. Here, if the lever shaft lifting mechanism moves the lever shaft, which is the swing center of the punch pin lever, upward, the movement range of the punch pin abutment portion of the punch pin lever shifts upward, thereby decreasing the amount of downward movement of the punch pin, which is in its initial position, due to the punch pin abutment portion. On the other hand, if the lever shaft, which is the rotation center of the punch pin lever, moves downward, the movement range of the punch pin abutment portion of the punch pin lever shifts downward, thereby increasing the amount of downward movement of the punch pin, which is in its initial position, due to the punch pin abutment portion. Therefore, by raising and lowering the lever shaft with the lever shaft lifting mechanism, the amount of movement of the punch pin penetrating the electrode foil can be adjusted. Therefore, each time the electrode foil used in manufacturing is changed, the depth to which the punch pin penetrates the electrode foil can be adjusted to correspond to the thickness of the electrode foil.

[0019] In the present invention, the lever shaft lifting mechanism may include a disk member, a support mechanism that supports the disk member rotatably around its central axis, and a servomotor for rotating the disk member, with the lever shaft being eccentrically attached to the disk member. In this manner, the lever shaft can be raised and lowered by rotating the disk member using the servomotor. This also facilitates raising and lowering the lever shaft with higher resolution than when a direct-acting actuator is used to directly raise and lower the lever shaft. Furthermore, using a servomotor as a drive source allows the lever shaft to be accurately positioned at a desired height. Therefore, the reproducibility of positioning the lever shaft at a desired position is high. Therefore, when the electrode foil used in manufacturing is changed, the height position of the lever shaft can be adjusted based on the thickness of the electrode foil.

[0020] In the present invention, the punch pin lever swing mechanism includes a rotation shaft parallel to the lever shaft, a cam attached to the rotation shaft, and a cam motor that rotates the rotation shaft, and the other end portion of the punch pin lever is a cam follower that slides against the cam. In this way, it is easy to move the other end portion of the punch pin lever by a predetermined distance. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is an explanatory diagram of an electrode foil with a current collector plate to which the present invention is applied. [Figure 2] FIG. [Figure 3] FIG. 2 is an explanatory diagram of a main part of an apparatus for manufacturing an electrode foil with a current collector plate. [Figure 4] 1A to 1C are explanatory diagrams of a method for manufacturing an electrode foil with a current collector plate. [Figure 5] 1A to 1C are explanatory diagrams of a method for manufacturing an electrode foil with a current collector plate. [Figure 6] 1A to 1C are explanatory diagrams of a method for manufacturing an electrode foil with a current collector plate. [Figure 7]1 is a perspective view of a main part of an apparatus for manufacturing an electrode foil with a current collector plate, as viewed from above. FIG. [Figure 8] 1 is a perspective view of a main part of an apparatus for manufacturing an electrode foil with a current collector plate, as viewed from the side. FIG. [Figure 9] FIG. 1 is a perspective view of a main part of an apparatus for manufacturing an electrode foil with a current collector plate, in which a punch pin is pressed down. [Figure 10] FIG. 1 is a perspective view of a main part of an apparatus for manufacturing an electrode foil with a current collector plate, in which a needle is pressed down. [Figure 11] FIG. 1 is a perspective view of a main part of an apparatus for manufacturing an electrode foil with a current collector plate, into which a press die is pressed. [Figure 12] FIG. 10 is an explanatory diagram of the needle moving mechanism with the second lever shaft raised. [Figure 13] FIG. 10 is an explanatory diagram of the needle moving mechanism with the second lever shaft lowered. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, an apparatus for manufacturing an electrode foil with a current collector plate according to the present invention will be described with reference to the drawings.

[0023] (electrode foil with current collector plate) FIG. 1 is an explanatory diagram of an electrode foil with a current collector plate. FIG. 1(a) is a plan view of the electrode foil with a current collector plate when viewed from the current collector plate side, and FIG. 1(b) is a plan view of the electrode foil with a current collector plate when viewed from the opposite side from the current collector plate. FIG. 2 is a cross-sectional view of a crimped portion. First, with reference to FIGS. 1 and 2, an electrode foil with a current collector plate 1 manufactured by an apparatus for manufacturing an electrode foil with a current collector plate will be described.

[0024] In this example, electrode foil 1 with a current collector is a component that constitutes a capacitor element of an electrolytic capacitor. As shown in FIG. 1(a), electrode foil 1 with a current collector includes electrode foil 2 (anode electrode foil) and current collector 3. As shown in FIG. 2, electrode foil 2 includes substrate 5 made of etched aluminum foil and chemical conversion coating 6 covering the surface of substrate 5. Current collector 3 is a plate member made of aluminum.

[0025] As shown in FIG. 1 , the current collector plate 3 has an overlapping portion 10 that overlaps the electrode foil 2, and a protruding portion 11 that protrudes from the overlapping portion 10 to the outside of the electrode foil 2. The protruding portion 11 extends in a direction perpendicular to the edge of the electrode foil 2. The electrode foil 2 and the current collector plate 3 are connected by a crimping portion 4, as shown in FIG. 1( a). The crimping portion 4 has a rectangular perforation 21 formed in the overlapping portion 10. As shown in FIG. 1( b), the crimping portion 4 has a burr 23 that is formed at the opening edge of the perforation 21 in the current collector plate 3, penetrates a 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 periphery of the perforation 21 to press the electrode foil 2 against the overlapping portion 10. Here, the electrode foil 1 with the current collector plate may have multiple crimping portions 4.

[0026] (Electrode foil manufacturing equipment with current collector plates) Next, the manufacturing apparatus for electrode foil with current collector plates will be described. Fig. 3 is an explanatory diagram of the main parts of the manufacturing apparatus for electrode foil with current collector plates. Figs. 4, 5, and 6 are explanatory diagrams of the manufacturing operation by which the manufacturing apparatus for electrode foil with current collector plates manufactures electrode foil with current collector plates.

[0027] 3, the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate includes a plate 32 having a mounting surface 31 on the upper surface of which the electrode foil 2 is mounted. On the mounting surface 31, there are provided a through-hole forming position A for forming a through-hole 22 in the electrode foil 2, a perforation forming position B for forming a perforation 21 in the current collector plate 3 superimposed on the electrode foil 2, and a A through-hole forming position A, a perforation forming position B, and a crimping position C for pressing the electrode foil 2 and the current collector plate 3 together are set. The through-hole forming position A, the perforation forming position B, and the crimping position C are set in this order in the extending direction of the plate 32. The plate 32 has a punch pin receiving hole 33 that penetrates in the vertical direction at the through-hole forming position A on the mounting surface 31. The plate 32 also has a needle receiving hole 34 that penetrates in the vertical direction at the perforation forming position B. The plate 32 is fixed to the base 25.

[0028] The current collector plate-attached electrode foil manufacturing apparatus 30 also includes a punch pin 42 arranged above the through-hole formation position A in the plate 32, and a first stripper 43 located between the punch pin 42 and the plate 32. The punch pin 42 includes a punch pin body 41a and a punch pin holder 41b that holds the punch pin body 41a. The punch pin body 41a is held at the lower end portion of the punch pin holder 41b. The first stripper 43 is provided with a pin guide hole 44 that passes through in the vertical direction. The punch pin body 41a can be inserted into the pin guide hole 44.

[0029] The punch pin 42 is supported by the base 25 (punch pin support mechanism) so as to be movable up and down. The punch pin 42 is biased to a punch pin initial position Q, where the punch pin 42 is spaced upward from the plate 32, by a coil spring (not shown) that is stretched between the base 25 and the punch pin holder 41b. In FIG. 3, the punch pin 42 is located at the punch pin initial position Q. The coil spring is a punch pin biasing mechanism that biases the punch pin 42 to the punch pin initial position Q.

[0030] Furthermore, the current collector plate-attached electrode foil manufacturing apparatus 30 includes a punch pin moving mechanism 45 that moves the punch pin 42 downward from the punch pin initial position Q. The base 25, the punch pin biasing mechanism, and the punch pin moving mechanism 45 constitute a hole punching mechanism 46. The hole punching mechanism 46 penetrates the electrode foil 2 from above with the punch pin 42 and inserts the tip of the punch pin 42 into the punch pin receiving hole 33 provided in the plate 32, thereby forming a through hole 22 in the electrode foil 2. The first stripper 43 is raised and lowered by a first stripper moving mechanism (not shown). Details of the punch pin moving mechanism 45 will be described later.

[0031] Furthermore, manufacturing apparatus 30 for electrode foil with current collector plate includes a current collector plate supply mechanism (not shown) that supplies current collector plate 3 to perforation position B on plate 32. Current collector plate 3 is placed on electrode foil 2 from above. As a result, current collector plate 3 and electrode foil 2 form laminate 15 (see FIG. 5(a)). Current collector plate 3 includes overlapping portion 10 that overlaps the electrode foil 2 above, and protruding portion 11 that protrudes from overlapping portion 10 to the outside of electrode foil 2.

[0032] Furthermore, the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate includes a needle 52 arranged above the perforation formation position B on the plate 32, and a second stripper 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 stripper 53 is provided with a needle guide hole 54 that passes through in the vertical direction. The needle body 51a can be inserted into the needle guide hole 54.

[0033] The needle 52 is supported on the base 25 (needle support mechanism) so that it can move up and down. The needle 52 is biased to a needle initial position R, which is spaced upward from the plate 32, by a coil spring (not shown) that is stretched between the base 25 and the needle holder 51b. In FIG. 3, the needle 52 is located at the needle initial position R. The coil spring is a needle biasing mechanism that biases the needle 52 to the needle initial position R.

[0034] Furthermore, the manufacturing apparatus 30 for manufacturing electrode foil with current collector plates is provided with a needle moving mechanism 55 that moves the needles 52 downward from the needle initial position R. The base 25, the needle biasing mechanism, and the needle moving mechanism 55 constitute a needle driving mechanism 56. The needle driving mechanism 56 drives the current collector 3 and the electrode foil 2 into the laminate 15. The needle 52 penetrates from the side of the current collector plate 3 and the tip is inserted into the needle receiving hole 34 provided in the plate 32, forming a hole 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 hole and protrudes to the opposite side of the overlapping portion 10. In this way, the needle driving mechanism 56 transforms the laminate 15 shown in FIG. 5(a) into the burred laminate 16 shown in FIG. 5(b). The second stripper 53 is raised and lowered by a second stripper moving mechanism (not shown). Details of the needle moving mechanism 55 will be described later.

[0035] Here, the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate includes a lower arrow 58 disposed below the perforation formation position B on the plate 32. The lower arrow 58 includes a lower arrow body 57a and a lower arrow holder 57b. The lower arrow body 57a is rod-shaped. When viewed from above and below, the lower arrow 58 overlaps with the needle receiving hole 34 provided in the plate 32.

[0036] The current collector plate-attached electrode foil manufacturing apparatus 30 also includes a press die 62 above the crimping position C. The press die 62 includes a press die main body 61a and a press die holder 61b that holds the press die main body 61a. The press die main body 61a is held at the lower end portion of the press die holder 61b. The press die 62 is supported on a base 25 (press die support mechanism) so that it can be raised and lowered. The press die 62 is also biased toward a press die initial position S, where it is spaced upward from the plate 32, by a coil spring (not shown) that spans between the base 25 and the press die holder 61b. In FIG. 3 , the press die 62 is located at the press die initial position S. The coil spring is a press die biasing mechanism that biases the press die 62 toward the press die initial position S.

[0037] Furthermore, the current collector plate-attached electrode foil manufacturing apparatus 30 includes a press die moving mechanism 65 that moves the press die 62 downward from the press die initial position S. The base 25, the press die biasing mechanism, and the press die moving mechanism 65 constitute a crimping mechanism 66. The crimping mechanism 66 moves the press die 62 toward the plate 32 from above to sandwich the burr-formed laminate 16 between the plate 32 and the press die 62, and plastically deforms the burr 23 toward the outer periphery of the perforation to form a crimped portion 4 that secures the electrode foil 2 and the current collector plate 3. In this example, the needle moving mechanism 55 and the press die moving mechanism 65 are the same mechanism. In other words, the needle moving mechanism 55 also serves as the press die moving mechanism 65.

[0038] Here, the current collector plate-attached electrode foil manufacturing apparatus 30 includes a base movement mechanism 68 that moves the base 25 to move the plate 32, punch pin 42, first stripper 43, needle 52, second stripper 53, down arrow 58, and press die 62 together in the horizontal direction along the mounting surface 31 of the plate 32. The current collector plate-attached electrode foil manufacturing apparatus 30 also includes an electrode foil holding mechanism (not shown) that holds the electrode foil 2 placed on the mounting surface 31 of the plate 32. When the base movement mechanism 68 operates, the electrode foil holding mechanism holds the electrode foil 2 in place without moving it horizontally together with the plate 32.

[0039] As shown in FIG. 3 , when manufacturing an electrode foil 1 with a current collector plate, the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate first places the electrode foil 2 at a through-hole formation position A on the mounting surface 31 of the plate 32. Next, as shown in FIG. 4( a), the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate lowers the first stripper 43 and sandwiches the electrode foil 2 between the first stripper 43 and the plate 32. Thereafter, the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate lowers the punch pin 42 using the punch pin moving mechanism 45, and penetrates the punch pin body 41 a through the electrode foil 2 to insert the tip of the punch pin body 41 a into the punch pin receiving hole 33. As a result, a through-hole 22 is formed in the electrode foil 2.

[0040] 4(b), the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate raises the punch pin 42 to remove the punch pin body 41a from the electrode foil 2. Thereafter, the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate raises the first stripper 43.

[0041] Here, the base moving mechanism 68 moves the base 25 as shown by the thick white arrow in FIG. 4(c), the electrode foil 2 moves to the perforation forming position B on the mounting surface 31. As a result, ... as shown in FIG. 4(c), the electrode foil 2 moves to the perforation forming position B on the mounting surface 31.

[0042] The electrode foil 2 is placed at the perforation formation position B so that the formed through holes 22 overlap the needle receiving holes 34 of the plate 32. Once the electrode foil 2 is placed at the perforation formation position B, as shown in FIG. 5( a), the current collector plate 3 is supplied to the perforation formation position B. As a result, the current collector plate 3 is placed from above on the portion of the electrode foil 2 where the through holes 22 are formed, and the electrode foil 2 and the current collector plate 3 form a laminate 15. When the current collector plate 3 is placed on the electrode foil 2, the current collector plate 3 has an overlapping portion 10 that covers the through holes 22 formed in the electrode foil 2 from above, and a protruding portion 11 that protrudes outward from the electrode foil 2.

[0043] Next, as shown in FIG. 5( b), the current collector plate-attached electrode foil manufacturing apparatus 30 lowers the second stripper 53 and sandwiches the laminate 15 between the second stripper 53 and the plate 32. Thereafter, the current collector plate-attached electrode foil manufacturing apparatus 30 lowers the needle 52 using the needle movement mechanism 55, causing the needle 52 to penetrate the current collector plate 3 and the electrode foil 2 and insert the tip of the needle 52 into the needle receiving hole 34. As a result, a perforation 21 is formed in the overlapping portion 10 of the current collector plate 3. A burr 23 is formed at the opening edge of the perforation 21 in the overlapping portion 10, penetrating the through-hole 22 in the electrode foil 2 and protruding toward the opposite side (downward) of the overlapping portion 10 of the electrode foil 2. Therefore, the laminate 15 becomes a burr-formed laminate 16. The burr 23 extends inside the needle receiving hole 34.

[0044] 5(c), the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate raises the needle 52 to remove the needle 52 from the electrode foil 2. Thereafter, the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate raises the second stripper 53 to separate the second stripper 53 from the current collector plate 3.

[0045] When the needle 52 is raised, the lower arrow 58 is raised accordingly, so that the lower arrow 58 comes into contact with the burr 23 from below and pushes the burred laminate 16 upward.

[0046] When the burr 23 of the burred laminate 16 is removed upward from the needle receiving hole 34, the base movement mechanism 68 of the electrode foil manufacturing apparatus 30 slides the base 25 as shown by the thick white arrow in FIG. 6( a). This causes the electrode foil manufacturing apparatus 30 to further move the plate 32, punch pin 42, first stripper 43, needle 52, second stripper 53, down arrow 58, and press die 62 horizontally. The electrode foil holding mechanism holds the electrode foil 2 in place without moving it horizontally together with the plate 32. As a result, the electrode foil 2 and the plate 32 move relative to each other, and the burred laminate 16 is positioned at the crimping position C on the mounting surface 31.

[0047] Next, as shown in FIG. 6(b), the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate lowers the press die 62 using the press die moving mechanism 65, and crimps (presses) the laminate 15 by sandwiching it between the press die 62 and the plate 32. As a result, the burrs 23 pass through the through-holes 22 in the electrode foil 2 and then bend outward from the perforations 21, pressing the electrode foil 2 against the overlapping portions 10 of the current collector plate 3. Therefore, the electrode foil 2 and the current collector plate 3 are connected by the crimped portions 4. The cross section of the crimped portions 4 is as shown in FIG. 2. Thereafter, the manufacturing apparatus 30 for manufacturing an electrode foil with a current collector plate raises the press die 62 as shown in FIG. 6(c).

[0048] (Punch pin moving mechanism, needle moving mechanism, and press die moving mechanism) FIG. 7 is a perspective view of the main parts of the apparatus 30 for producing electrode foil with current collector plates, as viewed from above. 8 is a perspective view of the main parts of the apparatus 30 for manufacturing an electrode foil with a current collector plate, as viewed from the side. In FIGS. 7 and 8, the punch pin 42, the needle 52, and the press die 62 are arranged at the punch pin initial position Q, the needle initial position R, and the press die initial position S, respectively. FIG. 9 is a perspective view of the main parts of the apparatus 30 for manufacturing an electrode foil with a current collector plate, with the punch pin 42 pressed down. FIG. 10 is a perspective view of the main parts of the apparatus 30 for manufacturing an electrode foil with a current collector plate, with the needle 52 pressed down. FIG. 11 is a perspective view of the main parts of the apparatus 30 for manufacturing an electrode foil with a current collector plate, with the press die 62 pressed down.

[0049] In the following description, three mutually perpendicular directions are referred to as the X-axis direction, the Y-axis direction, and the Z-axis direction. The X-axis direction is the extension direction of the mounting surface 31 of the plate 32. The X-axis direction is the movement direction of the base 25. The Y-axis direction is a direction perpendicular to the up-down direction and the extension direction of the mounting surface 31 of the plate 32. The Z-axis direction is the up-down direction. In the following description, one of the X-axis directions is referred to as the X1 direction, and the other is referred to as the X2 direction. On the mounting surface 31 of the plate 32, the through-hole forming position A, the drilling position B, and the crimping position C are set in this order from the X1 direction side to the X2 direction side. Furthermore, one of the Y-axis directions is referred to as the Y1 direction, and the other of the Y-axis directions is referred to as the Y2 direction. In the Z-axis direction, the downward direction is referred to as the Z1 direction, and the upward direction is referred to as the Z2 direction.

[0050] 7 and 8, the punch pin moving mechanism 45 includes a first lever 71 (punch pin lever), a first lever shaft 72 that swingably supports the first lever 71, and a first lever swinging mechanism 73 (punch pin lever swinging mechanism) for swinging the first lever 71. The first lever shaft 72 extends in the X-axis direction. The first lever 71 extends in the Y-axis direction.

[0051] As shown in FIG. 8, the first lever 71 has a first contact portion 75 (punch pin contact portion) at its end portion in the Y1 direction that can come into contact with the punch pin 42 arranged at the punch pin initial position Q from the Z2 direction. A roller is attached to the first contact portion 75. The first lever 71 also has a first connection portion 76 at its end portion in the Y2 direction that is connected to the first lever swing mechanism 73. A roller is attached to the first connection portion 76. The first lever shaft 72 rotatably supports a portion of the first lever 71 that is closer to the first contact portion 75 than the first connection portion 76. A bearing is interposed between the first lever shaft 72 and the first lever 71.

[0052] The first lever swing mechanism 73 includes a rotation shaft 77 parallel to the first lever shaft 72, a first cam 78 attached to the rotation shaft 77, and a cam motor 79 that rotates the rotation shaft 77. The first cam 78 is located in the Z1 direction of the first connection portion 76 of the first lever 71. The first cam 78 includes, on its cam surface, a first cam inner cam surface portion 78a close to the rotation shaft 77, a first cam outer cam surface portion 78b located radially outward of the first cam inner cam surface portion 78a, and a first cam connection cam surface portion 78c connecting the first cam inner cam surface portion 78a and the first cam outer cam surface portion 78b. The first lever 71 is biased by a lever biasing mechanism (not shown) in a rotational direction such that the first connection portion 76 rotates in the Z1 direction. Therefore, the first connection portion 76 is always in contact with the first cam 78. The first connection portion 76 of the first lever 71 is a cam follower that slides against the first cam 78. The first lever swing mechanism 73 moves the first connection portion 76 of the first lever 71 by a predetermined distance in the Z-axis direction (up and down direction).

[0053] The punch pin moving mechanism 45 also includes a first lever shaft lifting mechanism 81 that lifts and lowers the first lever shaft 72. The first lever shaft lifting mechanism 81 has a first disk member 82, a first support mechanism 83 that supports the first disk member 82 rotatably about its central axis, and a first servo motor 84 that rotates the first disk member 82. The first lever shaft 72 is attached eccentrically to the first disk member 82. That is, the central axis of the first lever shaft 72 is parallel to, but not collinear with, the rotational central axis of the first disk member 82. The output of the first servo motor 84 is transmitted to the first disk member 82 via a timing belt.

[0054] 7 and 8, the needle moving mechanism 55 and the press die moving mechanism 65 include a second lever 91 (lever for needle / lever for press die), a second lever shaft 92 that supports the second lever 91 so that it can swing, and a second lever swinging mechanism 93 (lever swinging mechanism for needle / lever swinging mechanism for press die) for swinging the second lever 91. The second lever shaft 92 extends in the X-axis direction. The second lever 91 extends in the Y-axis direction.

[0055] The second lever 91 has a second contact portion 95 (needle contact portion / press die contact portion) at its end in the Y1 direction that can contact, from the Z2 direction, the needle 52 positioned at the needle initial position R or the press die 62 positioned at the press die initial position S. A roller is attached to the second contact portion 95. Furthermore, as shown in FIG. 7, the second lever 91 has a second connection portion 96 at its end in the Y2 direction that is connected to the second lever swing mechanism 93. A roller is attached to the second connection portion 96. The second lever shaft 92 supports a portion of the second lever 91 that is closer to the second contact portion 95 than the second connection portion 96. The second lever shaft 92 rotatably supports a portion of the second lever 91 that is closer to the second contact portion 95 than the second connection portion 96. A bearing is interposed between the second lever shaft 92 and the second lever 91.

[0056] As shown in FIG. 8 , the second lever swing mechanism 93 includes a second cam 98 attached to the rotary shaft 77. The second cam 98 is located on the Z1 side of the second connection portion 96 of the second lever 91. The second cam 98 includes a cam surface including a second cam inner cam surface portion 98a that is close to the rotary shaft 77, a second cam outer cam surface portion 98b that is located on the outer periphery of the second cam inner cam surface portion 98a, and a second cam connection cam surface portion 98c that connects the two. The second lever 91 is biased by a lever biasing mechanism (not shown) in a rotational direction such that the second connection portion 96 rotates in the Z1 direction. This keeps the second connection portion 96 in contact with the second cam 98. The second connection portion 96 of the second lever 91 is a cam follower that slides against the second cam 98. The second lever swing mechanism 93 moves the second connection portion 96 of the second lever 91 a predetermined distance in the Z-axis direction (up and down).

[0057] The needle moving mechanism 55 and the press die moving mechanism 65 also include a second lever shaft lifting mechanism 101 that raises and lowers the second lever shaft 92. The second lever shaft lifting mechanism 101 includes a second disk member 102, a second support mechanism 103 that supports the second disk member 102 rotatably about its central axis, and a second servo motor 104 that rotates the second disk member 102. The second lever shaft 92 is attached eccentrically to the second disk member 102. That is, the central axis of the second lever shaft 92 is parallel to, but not collinear with, the rotational axis of the second disk member 102. The output of the second servo motor 104 is transmitted to the second disk member 102 via a timing belt.

[0058] 7, the X2-direction end portion of the first lever shaft 72 and the X1-direction end portion of the second lever shaft 92 are each supported by a lever shaft support mechanism 105. The lever shaft support mechanism 105 allows the first lever shaft 72 to move in accordance with the rotation of the first disk member 82. The lever shaft support mechanism 105 also allows the second lever shaft 92 to move in accordance with the rotation of the second disk member 102. In other words, the first lever shaft 72 and the second lever shaft 92 are supported by the lever shaft support mechanism 105 in a state in which they can move independently of each other.

[0059] 7 and 8 show the state shown in FIG. 3. That is, the punch pin 42 is positioned at the punch pin initial position Q at the upper end of its range of movement. The needle 52 is positioned at the needle initial position R at the upper end of its range of movement. The press die 62 is positioned at the press die initial position S at the upper end of its range of movement. Also, the first connecting portion 76 of the first lever 71 contacts the first cam inner cam surface portion 78a of the first cam 78. The second connecting portion 96 of the second lever 91 contacts the second cam inner cam surface portion 98a of the second cam 98.

[0060] FIG. 9 shows the state shown in FIG. 4(a). In FIG. 9, the first connecting portion 76 of the first lever 71 slides along the first cam connecting cam surface portion 78c of the first cam 78 from the state shown in FIG. 8 and reaches the first cam outer cam surface portion 78b. Therefore, the first connecting portion 76 moves a predetermined distance D in the Z2 direction from the state shown in FIGS. 7 and 8. Therefore, the first abutting portion 75 of the first lever 71 moves the punch pin 42 in the Z1 direction by a pushing distance E corresponding to the predetermined distance D. As a result, the first abutting portion 75 abuts the punch pin 42 from the Z2 direction side, moving the punch pin 42 in the Z1 direction. Therefore, the punch pin 42 penetrates the electrode foil 2, and its tip is inserted into the punch pin receiving hole 33 provided in the plate 32. Thus, a through hole 22 is formed in the electrode foil 2.

[0061] Figure 10 shows the state shown in Figure 5(b). Here, during the transition from the state shown in Figures 4(a) and 9 to the state shown in Figures 5(b) and 10, the base 25 slides in the X1 direction. That is, the plate 32, punch pin 42, first stripper 43, needle 52, second stripper 53, down arrow 58, and press die 62 move in the X1 direction. The punch pin moving mechanism 45, needle moving mechanism 55, and press die moving mechanism 65 do not move.

[0062] 10, the first connecting portion 76 of the first lever 71 slides on the cam surface of the first cam 78 and reaches the first cam inner cam surface portion 78a. Therefore, the first connecting portion 76 returns to its original position. Therefore, the first abutment portion 75 of the first lever 71 moves in the Z2 direction, and the punch pin 42 is positioned at the punch pin initial position Q.

[0063] Meanwhile, the second connecting portion 96 of the second lever 91 has reached the second cam outer cam surface portion 98b. As a result, the second connecting portion 96 moves upward by a predetermined distance D from the state shown in FIG. 9 . Therefore, the second abutting portion 95 of the second lever 91 moves in the Z1 direction by a pushing distance E corresponding to the predetermined distance D. As a result, the second abutting portion 95 of the second lever 91 abuts against the needle 52 from the Z2 direction side, moving the needle 52 in the Z1 direction. As a result, the needle 52 penetrates the current collecting 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. Therefore, the overlapping portion 10 of the current collecting plate 3 is formed with a perforation 21 and a burr 23 that penetrates the electrode foil 2 from the opening edge of the perforation 21 and protrudes to the opposite side from the overlapping portion 10.

[0064] FIG. 11 shows the state shown in FIG. 6(b). During the transition from the state shown in FIGS. 5(b) and 10 to the state shown in FIGS. 6(b) and 11, the second connecting portion 96 of the second lever 91 slides along the cam surface of the second cam 98 and reaches the second cam inner cam surface portion 98a. Therefore, as shown in FIG. 5(c), the second connecting portion 96 temporarily returns to its original position, and the needle 52 is positioned at the needle initial position R. Thereafter, as shown in FIG. 6(a), the base 25 slides in the X1 direction. That is, the plate 32, the punch pin 42, the first stripper 43, the needle 52, the second stripper 53, the down arrow 58, and the press die 62 move in the X1 direction. The punch pin moving mechanism 45, the needle moving mechanism 55, and the press die moving mechanism 65 do not move. 6(b) and 11, the first lever 71 is positioned in the Z2 direction of the needle 52, and the second lever 91 is positioned in the Z2 direction of the press die 62. As a result, the second lever 91, the second lever shaft 92, and the second lever swinging mechanism 93 form the press die moving mechanism 65.

[0065] The press die moving mechanism 65 includes a second lever 91 (press die lever), a second lever shaft 92 that supports the second lever 91 so that the second lever 91 can swing, and a second lever swinging mechanism 93 for swinging the second lever 91. The second lever 91 includes a second abutment portion 95 (press die abutment portion) at its end in the Y1 direction that can abut from the Z2 direction against the press die 62 that is arranged at the press die initial position S. A roller is attached to the second abutment portion 95. The second lever 91 also includes a second connection portion 96 at its end in the Y2 direction that is connected to the second lever swinging mechanism 93. A roller is attached to the second connection portion 96. The second lever shaft 92 is attached to the second connection portion 95. 6. The second lever swing mechanism 93 moves the other end portion of the second lever 91 by a predetermined distance D in the Z-axis direction.

[0066] The press die moving mechanism 65 also includes a second lever shaft lifting mechanism 101 that raises and lowers 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 rotatably about its central axis, and a second servo motor 104 that rotates the second disk member 102. The second lever shaft 92 is attached eccentrically to the second disk member 102.

[0067] 11, the second connecting portion 96 of the second lever 91 has reached the second cam outer cam surface portion 98b of the second cam 98. As a result, the second connecting portion 96 moves upward by a predetermined distance D from a state in which the second connecting portion 96 contacts the second cam inner cam surface portion 98a of the second cam 98. Therefore, the second contact portion 95 of the second lever 91 moves in the Z1 direction by a pushing distance E corresponding to the predetermined distance D. As a result, the second contact portion 95 of the second lever 91 contacts the press die 62 from the Z2 direction side, moving the press die 62 in the Z1 direction. Therefore, the press die 62 approaches the plate 32 from the Z2 direction side, sandwiching the burr-formed laminate 16 between the plate 32 and the press die 62, and plastically deforming the burr 23 toward the outer periphery of the perforation 21 to form the crimped portion 4 that secures the electrode foil 2 and the current collector plate 3.

[0068] (Effect of raising and lowering the second lever shaft) Figure 12 is an explanatory diagram of the needle movement mechanism 55 with the second lever shaft 92 raised. Figure 13 is an explanatory diagram of the needle movement mechanism 55 with the second lever shaft 92 lowered. Here, in the needle movement mechanism 55 (second lever shaft lifting mechanism 101), the second lever shaft 92 is attached to the second disk member 102 in a state where it is eccentric with respect to the central axis of rotation of the second disk member 102. In this example, the amount of eccentricity by which the second lever shaft 92 is eccentric with respect to the second disk member 102 is 3 mm.

[0069] 12(a) shows the initial state in which the central axis of the second lever shaft 92 is at the same height as the central axis of rotation of the first disk member 82. In this state, when the second lever swing mechanism 93 moves the second connecting portion of the second lever 91 in the Z2 direction by a predetermined distance D, the second abutment portion 95 of the second lever 91 moves in the Z1 direction by a pushing distance E. As a result, the needle 52, which is located at the needle initial position R, moves in the Z1 direction by a movement amount F.

[0070] 12(a), when the second servo motor 104 is driven and controlled to rotate the second disk member 102 clockwise by 60° from the initial state, the second lever shaft 92 moves (rises) approximately 1.5 mm in the Z2 direction, as shown in FIG. 12(b). As a result, the range of movement of the second contact portion 95 of the second lever 91 in the Z1 direction by the pushing distance E is shifted approximately 1.5 mm in the Z2 direction relative to the range of movement of the first contact portion 75 in the initial state. Therefore, the amount of movement G1 by which the second lever 91 moves the needle 52, which is at the needle initial position R, in the Z1 direction is shorter than the amount of movement F by approximately 1.5 mm.

[0071] 13(a), like FIG. 12(a), shows the initial state in which the central axis of the second lever shaft 92 is at the same height as the rotational central axis of the first disk member 82. When the second servo motor 104 is driven and controlled from this state to rotate the second disk member 102 counterclockwise by 60° from the initial state, the second lever shaft 92 moves (descends) approximately 1.5 mm in the Z1 direction, as shown in FIG. 13(b). As a result, the range of movement of the second contact portion 95 of the second lever 91 in the Z1 direction by the pushing distance E is shifted approximately 1.5 mm in the Z1 direction relative to the range of movement of the first contact portion 75 in the initial state. Therefore, the amount of movement G2 by which the second lever 91 moves the needle 52 in the Z1 direction from the needle initial position R is approximately 1.5 mm longer than the amount of movement F.

[0072] Therefore, by controlling the driving of the first servo motor 84 to rotate the second disk member 102, By moving the second lever shaft 92 in the Z-axis direction, the amount of movement F by which the second lever 91 moves the needle 52 in the Z1 direction can be adjusted.

[0073] Here, the same operational effect can be obtained in the press die moving mechanism 65. That is, in the press die moving mechanism 65, when the second servo motor 104 of the second lever shaft lifting mechanism 101 is driven and controlled to rotate the second disk member 102 and lift the second lever shaft 92 in the Z axis direction, the movement range of the second contact portion 95 of the second lever 91, which abuts against the press die 62 from the Z2 direction side, shifts in the Z axis direction. Therefore, the amount of movement of the press die 62, which is pressed down by the second abutment portion 95 and moves downward, can be adjusted. The same operational effect can also be obtained in the punch pin moving mechanism 45. That is, in the punch pin moving mechanism 45, when the first servo motor 84 of the first lever shaft lifting mechanism 81 is driven and controlled to rotate the first disk member 82 and lift the first lever shaft 72 in the Z-axis direction, the movement range of the first contact portion 75 of the first lever 71 that abuts against the punch pin 42 from the Z2-direction side shifts in the Z-axis direction. Therefore, the movement amount of the punch pin 42 that is pressed down by the first contact portion 75 and moves in the Z1 direction can be adjusted.

[0074] (Action and effect) In the current collector plate-attached electrode foil manufacturing apparatus 30, if the depth to which the needles 52 penetrate the current collector plate 3 and the electrode foil 2 is shallow, a problem occurs in that burrs 23, which become the crimped portions when they are pressed together, are not formed well. Furthermore, if the needles 52 penetrate the current collector plate 3 and the electrode foil 2 too deeply, the needles 52 are prone to wear, and the needles 52 must be replaced frequently. Therefore, every time the electrode foil 2 or current collector plate 3 used in manufacturing is changed, the depth to which the needles 52 penetrate the current collector plate 3 and the electrode foil 2 must be adjusted to correspond to the thickness of the electrode foil 2 or the thickness of the current collector plate 3.

[0075] In contrast, in this example, the needle moving mechanism 55 includes a second lever 91 (needle lever) having a second abutment portion 95 (needle abutment portion) at its Y1 end portion that can abut against the needle 52 from the Z2 side, a second lever shaft 92 that swingably supports the second lever 91, and a second lever swinging mechanism 93 that moves the Y2 end portion (second connection portion 96) of the second lever 91 a predetermined distance D in the Z-axis direction. Therefore, when the second lever swinging mechanism 93 moves the second connection portion 96 by the predetermined distance D toward the Z2 side, the second lever 91 swings around the second lever shaft 92. As a result, the second abutment portion 95 of the second lever 91 moves downward by a pushing distance E corresponding to the predetermined distance D, moving the needle 52 in the Z1 direction. The needle moving mechanism 55 also includes a second lever shaft lifting mechanism 101 that lifts and lowers the second lever shaft 92. When the second lever shaft lifting mechanism 101 moves the second lever shaft 92, which is the swing center of the second lever 91, in the Z2 direction, the movement range of the second contact portion 95 of the second lever 91 shifts in the Z2 direction. Therefore, the amount by which the second lever 91 moves the needle 52, which is at the needle initial position R, in the Z1 direction decreases. On the other hand, when the second lever shaft 92, which is the rotation center of the second lever 91, is moved in the Z1 direction, the movement range of the second contact portion 95 of the second lever 91 shifts in the Z1 direction. Therefore, the amount by which the second lever 91 moves the needle 52, which is at the needle initial position R, in the Z1 direction increases. Therefore, by lifting and lowering the second lever shaft 92 with the first lever shaft lifting mechanism 81, the movement amount of the needle 52 that penetrates the current collecting plate 3 and the electrode foil 2 can be adjusted.

[0076] The second lever shaft lifting mechanism 101 includes a second disk member 102, a second support mechanism 103 that supports the second disk member 102 rotatably about its central axis, and a second servo motor 104 for rotating the second disk member 102. The second lever shaft 92 is attached eccentrically to the second disk member 102. Therefore, the second lever shaft 92 can be raised and lowered by rotating the second disk member 102 with the second servo motor 104. Furthermore, with this configuration, the second lever shaft 92 can be easily raised and lowered with higher resolution than when the second lever shaft 92 is directly raised and lowered using a linear actuator. Here, by using the second servo motor 104, the height position of the second lever shaft 92 can be adjusted to a desired position. Therefore, the height position of the second lever shaft 92 can be adjusted accurately based on the thickness of the current collector plate 3 and the thickness of the electrode foil 2.

[0077] The second lever swing mechanism 93 also includes a rotation shaft 77 parallel to the second lever shaft 92, a second cam 98 attached to the rotation shaft 77, and a cam motor 79 that rotates the rotation shaft 77. The second connection portion 96 of the second lever 91 is a cam follower that slides against the second cam 98. Therefore, it is easy to move the second connection portion 96 of the second lever 91 a predetermined distance.

[0078] Next, in the current collector plate-attached electrode foil manufacturing apparatus 30, if the amount of pressing by the press die 62 against the current collector plate 3 and the electrode foil 2 from the Z2 direction is insufficient, i.e., if the amount of movement of the press die 62 toward the current collector plate 3 and the electrode foil 2 is insufficient, the formation of the crimped portion will be insufficient, and the bond between the current collector plate and the electrode foil 2 will be loose. If the amount of pressing by the press die 62 against the current collector plate 3 and the electrode foil 2 from the Z2 direction is too great, i.e., if the amount of movement of the press die 62 toward the current collector plate 3 and the electrode foil 2 is too great, cracks or tears may occur in the current collector plate 3 or the electrode foil 2. Therefore, every time the electrode foil 2 or current collector plate 3 used in manufacturing is changed, the amount of movement of the press die 62 toward the current collector plate 3 and the electrode foil 2 must be adjusted according to the thickness of the electrode foil 2 or the current collector plate 3.

[0079] In contrast, in this example, the press die moving mechanism 65 includes a second lever 91 (press die lever) having a second abutment portion 95 (press die abutment portion) at its end in the Y1 direction that can abut against the press die 62 from the Z2 direction side, a second lever shaft 92 that swingably supports the second lever 91, and a second lever swinging mechanism 93 that moves the other end portion of the second lever 91 a predetermined distance D in the Z2 direction. Therefore, when the second lever swinging mechanism 93 moves the second connection portion 96 of the second lever 91 in the Z2 direction by the predetermined distance D, the second lever 91 swings around the second lever shaft 92. As a result, the abutment portion of the second lever 91 against the press die 62 moves in the Z1 direction by a pushing distance E corresponding to the predetermined distance D, moving the press die 62 in the Z1 direction. The press die moving mechanism 65 also includes a second lever shaft lifting mechanism 101 that lifts and lowers the second lever shaft 92. When the second lever shaft lifting mechanism 101 moves the second lever shaft 92, which is the swing center of the second lever 91, in the Z-axis direction, the movement range of the second contact portion 95 of the second lever 91 shifts in the Z-axis direction. Therefore, the amount by which the second lever 91 moves the press die 62, which is at the press die initial position S, in the Z1 direction decreases. On the other hand, when the second lever shaft lifting mechanism 101 moves the second lever shaft 92 in the Z1 direction, the movement range of the second contact portion 95 of the second lever 91 shifts in the Z1 direction. Therefore, the amount by which the second lever 91 moves the press die 62, which is at the press die initial position S, in the Z1 direction increases. Therefore, by raising and lowering the second lever shaft 92 with the second lever shaft lifting mechanism 101, the movement amount of the press die 62, which penetrates the current collector plate 3 and the electrode foil 2, can be adjusted.

[0080] The second lever shaft lifting mechanism 101 includes a second disk member 102, a second support mechanism 103 that supports the second disk member 102 rotatably around its central axis, and a second servo motor 104 for rotating the second disk member 102. The second lever shaft 92 is attached eccentrically to the second disk member 102. Therefore, the second lever shaft 92 can be raised and lowered by rotating the second disk member 102 with the second servo motor 104. This configuration also facilitates raising and lowering the second lever shaft 92 with higher resolution than when a direct-acting actuator is used to directly raise and lower the second lever shaft 92. Using the second servo motor 104 allows the second lever shaft 92 to be accurately positioned at a desired height. Therefore, the reproducibility of positioning the second lever shaft 92 at a desired height is high. Therefore, the second lever shaft 92 can be adjusted based on the thickness of the current collector plate 3 and the thickness of the electrode foil 2. It can be adjusted to 92 different height positions.

[0081] The second lever swing mechanism 93 also includes a rotation shaft 77 parallel to the second lever shaft 92, a second cam 98 attached to the rotation shaft 77, and a cam motor 79 that rotates the rotation shaft 77. The second connection portion 96 of the second lever 91 is a cam follower that slides against the second cam 98. Therefore, it is easy to move the second connection portion 96 of the second lever 91 a predetermined distance.

[0082] Furthermore, in the current collector plate-attached electrode foil manufacturing apparatus 30, if the punch pin 42 penetrates the electrode foil 2 too shallowly, a problem occurs in that no holes are formed in the electrode foil 2. If the punch pin 42 penetrates the electrode foil 2 too deeply, the punch pin 42 becomes more susceptible to wear, and the punch pin 42 must be replaced more frequently. Therefore, every time the electrode foil 2 used in manufacturing is changed, the depth to which the punch pin 42 penetrates the current collector plate 3 must be adjusted to correspond to the thickness of the electrode foil 2.

[0083] In contrast, in this example, the punch pin moving mechanism 45 includes a first lever 71 (punch pin lever) having a first abutment portion 75 (punch pin abutment portion) at its Y1-direction end portion that can abut against the punch pin 42 from the Z2-direction side, a first lever shaft 72 that swingably supports the first lever 71, and a first lever swinging mechanism 73 that moves the Y2-direction end portion of the first lever 71 a predetermined distance D in the Z-axis direction. Therefore, when the first lever swinging mechanism 73 moves the second connection portion 96 of the first lever 71 in the Z2 direction by the predetermined distance D, the first lever 71 swings around the first lever shaft 72. As a result, the first abutment portion 75 of the first lever 71 moves in the Z1 direction by a pushing distance E corresponding to the predetermined distance D, moving the punch pin 42 in the Z1 direction. The punch pin moving mechanism 45 also includes a first lever shaft elevating mechanism 81 that raises and lowers the first lever shaft 72. When the first lever shaft lifting mechanism 81 moves the first lever shaft 72, which is the swing center of the first lever 71, in the Z2 direction, the movement range of the first contact portion 75 of the first lever 71 shifts in the Z2 direction. Therefore, the amount by which the first lever 71 moves the punch pin 42, which is at the punch pin initial position Q, in the Z1 direction decreases. On the other hand, when the first lever shaft 72, which is the rotation center of the first lever 71, is moved in the Z1 direction, the movement range of the first contact portion 75 of the first lever 71 shifts in the Z1 direction. Therefore, the amount by which the first lever 71 moves the punch pin 42, which is at the punch pin initial position Q, in the Z1 direction increases. Therefore, by raising and lowering the first lever shaft 72 with the first lever shaft lifting mechanism 81, the movement amount of the punch pin 42 that penetrates the electrode foil 2 can be adjusted.

[0084] The first lever shaft lifting mechanism 81 includes a first disk member 82, a first support mechanism 83 that supports the first disk member 82 rotatably about its central axis, and a first servo motor 84 for rotating the first disk member 82. The first lever shaft 72 is attached eccentrically to the first disk member 82. Therefore, the first lever shaft 72 can be raised and lowered by rotating the first disk member 82 with the first servo motor 84. This configuration facilitates raising and lowering the first lever shaft 72 with higher resolution than when a direct-acting actuator is used to directly raise and lower the first lever shaft 72. Using the first servo motor 84 allows the first lever shaft 72 to be accurately positioned at a desired height. Therefore, the height of the first lever shaft 72 can be easily adjusted based on the thickness of the electrode foil 2.

[0085] The first lever swing mechanism 73 also includes a rotary shaft 77 parallel to the first lever shaft 72, a first cam 78 attached to the rotary shaft 77, and a cam motor 79 that rotates the rotary shaft 77. The first connecting portion 76 of the first lever 71 is a cam follower that slides against the first cam 78. Therefore, it is easy to move the first connecting portion 76 of the first lever 71 by a predetermined distance D. is.

[0086] (Variation) In the first lever swing mechanism 73, the rotating shaft 77 to which the first cam 78 is attached and the rotating shaft 77 to which the second cam 98 is attached in the second lever swing mechanism 93 can be different members. In this case, a cam motor that rotates the rotating shaft to which the first cam 78 is attached and a cam motor that rotates the rotating shaft to which the second cam 98 is attached are provided separately. In this way, the first cam 78 and the second cam 98 can be rotated independently of each other. [Explanation of symbols]

[0087] DESCRIPTION OF SYMBOLS 1...electrode foil with current collector plate, 2...electrode foil, 3...current collector plate, 4...crimped portion, 5...substrate, 6...chemical conversion coating, 10...overlapping portion, 11...protruding portion, 15...laminated body, 16...laminated body with burrs formed thereon, 21...perforation, 22...through hole, 23...burr, 25...base, 30...electrode foil with current collector plate manufacturing apparatus, 31...mounting surface, 32...plate, 33...punch pin receiving hole, 34...needle receiving hole, 41a...punch pin body, 41b...punch pin holder, 42...punch pin , 43...first stripper, 44...pin guide hole, 45...punch pin moving mechanism, 46...hole punching mechanism, 51a...needle body, 51b...needle holder, 52...needle, 53...second stripper, 54...needle guide hole, 55...needle moving mechanism, 56...needle driving mechanism, 57a...lower arrow body, 57b...lower arrow holder, 58...lower arrow, 61a...press die body, 61b...press die holder, 62...press die, 65...press die moving mechanism, 66...crimping mechanism, 68...base movement mechanism, 71...first lever, 72...first lever shaft, 73...first lever swing mechanism, 75...first contact portion (punch pin connection portion), 76...first connection portion, 77...rotation shaft, 78...first cam, 78a...first cam inner cam surface portion, 78b...first cam outer cam surface portion, 78c...first cam connection cam surface portion, 79...cam motor, 81...first lever shaft lifting mechanism, 82...first disk member, 83...first support member, 84...first servo motor, 91...first Two levers, 92...second lever shaft, 93...second lever swing mechanism, 95...second contact portion, 96...second connection portion, 98...second cam, 98a...second cam inner cam surface portion, 98b...second cam outer cam surface portion, 98c...second cam connection cam surface portion, 101...second lever shaft lifting mechanism, 102...second disk member, 103...second support mechanism, 103...second support member, 104...servo motor, 104...second servo motor, 105...lever shaft support mechanism

Claims

1. a plate that supports, from below, a stack that includes electrode foils and current collector plates that have overlapping portions that overlap the electrode foils; Needles and a needle driving mechanism that penetrates the stack from above and inserts the tip of the needle into a needle receiving hole provided in the plate, and forms a hole in the overlapping portion and a burr that penetrates the electrode foil from an opening edge of the hole and protrudes to the opposite side of the overlapping portion, The needle driving mechanism includes a needle support mechanism that supports the needle so that the needle can move up and down, a needle biasing mechanism that biases the needle to a needle initial position R that is spaced upward 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 lever having a needle abutment portion at one end thereof that can abut from the Z2 direction against the needle positioned at the needle initial position R; a lever shaft that supports the needle lever so that it can swing; a needle lever swinging mechanism that moves the other end portion of the needle lever upward by a predetermined distance; and a lever shaft lifting mechanism that raises and lowers the lever shaft.

2. the lever shaft lifting mechanism includes a disk member, a support mechanism that supports the disk member rotatably around its central axis, and a servo motor that rotates the disk member, 2. The manufacturing apparatus for an electrode foil with a current collector plate according to claim 1, wherein the lever shaft is attached eccentrically to the disk member.

3. the needle lever swing mechanism includes a rotation shaft parallel to the lever shaft, a cam attached to the rotation shaft, and a cam motor that rotates the rotation shaft; 3. The manufacturing apparatus for an electrode foil with a current collector plate according to claim 2, wherein the other end portion of the needle lever is a cam follower that is in sliding contact with the cam.

4. a plate that supports from below a burr-formed laminate, the burr-formed laminate including electrode foil and a current collector plate having an overlapping portion that overlaps the electrode foil, the current collector plate having a perforation in the overlapping portion and a burr that penetrates the electrode foil from an opening edge of the perforation and protrudes to an opposite side from the overlapping portion; A press mold and a crimping mechanism that brings the press die close to the plate from above to sandwich the burr-formed laminate between the press die and the plate, and plastically deforms the burr toward the outer periphery of the perforation to form a crimped portion that fixes the electrode foil and the current collecting plate, the crimping mechanism includes a press die support mechanism that supports the press die movably in a vertical direction, a press die biasing mechanism that biases the press die to a press die initial position where the press die is spaced upward from the plate, and a press die moving mechanism that moves the press die downward from the press die initial position, the press die moving mechanism comprises: a press die lever having a press die abutment portion at one end portion thereof that can abut from the Z2 direction against the press die that is placed at the press die initial position; a lever shaft that supports the press die lever so that it can swing; a press die lever swinging mechanism that moves the other end portion of the press die lever upward by a predetermined distance; and a lever shaft lifting mechanism that raises and lowers the lever shaft.

5. the lever shaft lifting mechanism includes a disk member, a support mechanism that supports the disk member rotatably around its central axis, and a servo motor that rotates the disk member, 5. The manufacturing apparatus for an electrode foil with a current collector plate according to claim 4, wherein the lever shaft is attached eccentrically to the disk member.

6. The press die lever swing mechanism has a rotation axis parallel to the lever axis and a lever attached to the rotation axis. a cam motor that rotates and drives the rotary shaft, 6. The manufacturing apparatus for an electrode foil with current collector plates according to claim 5, wherein the other end portion of the press die lever is a cam follower that comes into sliding contact with the cam.

7. a plate that supports the electrode foil from below; Punch pin and a punching mechanism that penetrates the electrode foil from above with the punch pin and inserts a tip of the punch pin into a punch pin receiving hole provided in the plate to form a through hole in the electrode foil, the hole punching mechanism includes a punch pin support mechanism that supports the punch pin so that it can move up and down, a punch pin biasing mechanism that biases the punch pin toward a punch pin initial position Q at which the punch pin is spaced upward from the plate, and a punch pin moving mechanism that moves the punch pin downward from the punch pin initial position Q, the punch pin moving mechanism comprises: a punch pin lever having, at one end thereof, a punch pin abutment portion that can abut from the Z2 direction against the punch pin that is positioned at the punch pin initial position Q; a lever shaft that swingably supports the punch pin lever; a punch pin lever swinging mechanism that moves the other end portion of the punch pin lever upward by a predetermined distance; and a lever shaft lifting mechanism that raises and lowers the lever shaft.

8. the lever shaft lifting mechanism includes a disk member, a support mechanism that supports the disk member rotatably around its central axis, and a servo motor that rotates the disk member, 8. The manufacturing apparatus for an electrode foil with a current collector plate according to claim 7, wherein the lever shaft is attached eccentrically to the disk member.

9. the punch pin lever swing mechanism includes a rotation shaft parallel to the lever shaft, a cam attached to the rotation shaft, and a cam motor that rotationally drives the rotation shaft, 9. The manufacturing apparatus for an electrode foil with a current collector plate according to claim 8, wherein the other end portion of the punch pin lever is a cam follower that comes into sliding contact with the cam.

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