Electrode lamination device

Abstract

To provide an electrode lamination device preferably laminating a sheet-like electrode.SOLUTION: In an electrode lamination device 1, a stator 11 includes: a main surface F1 horizontally installed; and a plurality of coils 14 to a lower direction of the main surface F1. A lamination movable part 12 includes: a first movable element 121 that can be moved so as to be floated to an upper direction of the main surface F1 with a magnet; an electrode holding part 123; and a driving mechanism 124. The electrode holding part 123 depresses a base 122 installed to an upper part of the first movable element 121 and a sheet-like electrode M1 supplied to an upper surface of the base 122 from the upper direction. The driving mechanism 124 drives the electrode holding part 123 by receiving external force. An operation movable part 13 includes: a second movable element 131 that can be moved to the upper direction of the main surface F1; and an operation part 132 that operates the driving mechanism 124. A control part 40 controls each operation of the lamination movable part 12 and the operation movable part 13 by setting a current flowing each coil 14.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electrode stacking device. [Background technology]

[0002] Apparatus exists for aligning and stacking sheet electrodes.

[0003] For example, in the electrode stacking device described in Patent Document 1, a conveying device arranged above a planar motor device having multiple movers that can be magnetically levitated and moved on the surface of a flat stator stacks new sheet-like electrodes on the stacked electrode holder of the movers. At this time, the movers move in synchronization with the movement of the sheet-like electrodes. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2022-174961 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned device, the orientation of the sheet-like electrode held by the conveying device may be tilted around the vertical axis. In this case, however, the above-mentioned device has a problem in terms of appropriately operating the clamp of the stacked electrode holder.

[0006] The present invention has been made to solve the above problems, and provides an electrode stacking device that suitably stacks sheet-like electrodes. [Means for solving the problem]

[0007] The electrode stacking device according to the present disclosure includes a stator, a stacking movable part, an operation movable part, and a control part. The stator has a main surface that is placed horizontally and a number of coils below the main surface. The stacking movable part has a first movable element, an electrode holding part, and a driving mechanism. The first movable element is movable by magnetic levitation above the main surface. The electrode holder holds down from above a base placed on the top of the first mover and a sheet-like electrode provided on the top surface of the base. The driving mechanism drives the electrode holding portion by receiving an external force. The operation movable portion has a second movable element that is movable above the main surface, and an operation portion that is fixed to the second movable element and that operates the drive mechanism by coming into contact with the drive mechanism. The control unit controls the operation of each of the stacking movable part and the operation movable part by setting the current to be passed through the coil. Effect of the Invention

[0008] According to the present invention, it is possible to provide an electrode stacking device that appropriately stacks sheet-shaped electrodes. [Brief description of the drawings]

[0009] [Figure 1] 1 is an overall perspective view of an electrode stacking device 1 according to an embodiment. [Diagram 2] FIG. 2 is a perspective view of a stacking movable part and an operation movable part. [Diagram 3] FIG. 11 is a first side view showing the operation of the stacking movable part and the operation movable part. [Figure 4] 13 is a second side view showing the operation of the stacking movable part and the operation movable part. FIG. [Diagram 5] FIG. 11 is a first top view showing the operation of the stacking movable part and the operation movable part. [Figure 6] FIG. 11 is a second top view showing the operation of the stacking movable part and the operation movable part. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present invention will be described below through the embodiments of the invention, but the invention according to the claims is not limited to the following embodiments. In addition, not all of the configurations described in the embodiments are necessarily essential as means for solving the problems. For clarity of explanation, the following description and drawings are omitted and simplified as appropriate. In each drawing, the same elements are given the same reference numerals, and duplicate explanations are omitted as necessary.

[0011] <Embodiment Mode> Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall perspective view of an electrode lamination device 1 according to the embodiment. The electrode lamination device 1 is a device for laminating a plurality of sheet-like electrodes. The electrode lamination device 1 laminates a plurality of sheet-like electrodes to manufacture an electrode laminate. The electrode laminate is used, for example, as a battery to be mounted on a vehicle. The sheet-like electrode may be, for example, an electrode of an all-solid-state battery or an electrode of a semi-solid-state battery. The thickness of the sheet-like electrode is, for example, about 200 micrometers to 1000 micrometers. In the following description, the sheet-like electrode may be simply referred to as an electrode.

[0012] 1 mainly comprises a planar motor 10, a conveying device 20, a camera 30, and a control unit 40. In the electrode stacking device 1, the conveying device 20 receives rectangular electrodes M1, and sequentially supplies the received electrodes M1 to the planar motor 10. In this way, the planar motor 10 stacks the electrodes M1.

[0013] For convenience of explaining the positional relationship of the components, a right-handed Cartesian coordinate system is used in Fig. 1. Also, in Fig. 2 and subsequent figures, when a Cartesian coordinate system is used, the X-axis, Y-axis, and Z-axis directions in Fig. 1 coincide with the X-axis, Y-axis, and Z-axis directions in these Cartesian coordinate systems, respectively.

[0014] In the planar motor 10, a mover provided on a stator having a flat surface moves on the flat surface. The planar motor 10 has a stator 11, a stacking movable part 12, and an operation movable part 13 as its main components.

[0015] The stator 11 has a main surface F1 that is placed horizontally and a number of coils 14 below the main surface F1. The stator 11 generates a magnetic field on the main surface F1 when a current flows through the coils 14. As a result, the planar motor 10 levitates the stacking movable part 12 and the operation movable part 13 that are placed on the main surface F1, and moves the levitated stacking movable part 12 and operation movable part 13. The stator 11 may also have a number of magnetic sensors along the main surface F1. The magnetic sensors are used to detect the positions of the stacking movable part 12 and the operation movable part 13 that are levitated and move above the main surface F1.

[0016] The stator 11 supplies the output of the magnetic sensor to the control unit 40. As a result, the control unit 40 suitably recognizes the positions of the stacking movable part 12 and the operation movable part 13. The control unit 40 also controls the current flowing through the coil 14 of the stator 11. As a result, the control unit 40 suitably controls the movements of the stacking movable part 12 and the operation movable part 13. The stacking movable part 12 and the operation movable part 13 will be described in detail later.

[0017] The transport device 20 is installed above the planar motor 10, and supplies the electrode M1 to the stacking movable part 12 of the planar motor 10. The transport device 20 has a rail 21 and a transport part 22 as its main components.

[0018] The rail 21 is a rail formed in a ring shape, and guides the engaged conveying part 22. The rail 21 has a straight portion parallel to the main surface F1 so as to face the main surface F1. The straight portion of the rail 21 engages with the conveying part 22 so as to be capable of linear motion. The conveying device 20 shown in FIG. 1 has an elliptical shape including this straight portion. The rail 21 is installed so that the surface formed by the elliptical shape of the rail 21 is perpendicular to the main surface F1 and parallel to the direction in which the electrode M1 is conveyed. Furthermore, the conveying device 20 has two rails 21 arranged in parallel and parallel to the conveying direction (Y-axis direction) of the electrode M1. At this time, the distance between the two rails 21 corresponds to the size of the electrode M1. This allows the conveying device 20 to hold the end of the electrode M1.

[0019] The transport unit 22 receives and holds the electrode M1. The transport unit 22 transports the held electrode M1 along the rail 21. The transport unit 22 also supplies the transported electrode M1 to the operation movable unit 13. The transport unit 22 mainly comprises a hanging clamp 23 and a hanging base 24. The hanging clamp 23 can clamp the electrode M1 between itself and the hanging base 24. The hanging clamp 23 is set to be switchable between a state in which the electrode M1 is clamped and held between itself and the hanging base 24 and a state in which the electrode M1 is received or released by an arbitrary mechanism (not shown). The hanging base 24 engages with the rail 21 and moves linearly along the rail 21.

[0020] The transport device 20 may have a plurality of transport parts 22. This allows the transport device 20 to handle electrodes M1 of various sizes, for example. The transport device 20 can also transport the electrodes M1 continuously by moving the plurality of transport parts 22 in the transport direction, circulating the transport parts 22 along the annular rail 21. The transport device 20 may transport the electrodes M1 continuously, for example, by receiving the electrodes M1 on the upstream side, supplying the electrodes M1 to the operation movable part 13 on the downstream side, and then repeating the operation of moving the transport parts 22 upstream (i.e., reciprocating).

[0021] The rail 21 may also guide the self-propelled conveying unit 22. In this case, the conveying unit 22 may have a motor for self-propelling. The rail 21 may also have a movable part such as a belt conveyor for driving the conveying unit 22. In this case, the conveying unit 22 may be driven by the rail 21.

[0022] The camera 30 is installed above the transport device 20 and is set to capture images downward from the installed position. The camera 30 captures an image of the outer shape of the electrode M1 transported by the transport device 20 and supplies the image data generated to the control unit 40. As a result, the image data generated by the camera 30 and supplied to the control unit 40 includes information on the position and inclination of the outer shape of the electrode M1 transported by the transport device 20. The control unit 40 receives the above-mentioned image data and controls the stacking movable part 12 and the operation movable part 13 so as to correspond to the position and inclination of the electrode M1 included in the received image data. Note that the camera 30 may capture an image of a marker provided on the electrode M1 instead of the outer shape of the electrode M1.

[0023] The control unit 40 has a control board including a computing device such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit) and a storage device that stores at least a program for the electrode stacking device 1 to perform the functions of the present disclosure. The control unit 40 controls at least the movements of the stacking movable part 12 and the operation movable part 13 of the planar motor 10. That is, the control unit 40 controls the respective operations of the stacking movable part 12 and the operation movable part 13 by setting the current to be passed through the coil of the stator 11. The control unit 40 also receives image data from the camera 30, and uses the received image data to control the positions and inclinations of the stacking movable part 12 and the operation movable part 13 to correspond to the position and inclination of the electrode M1.

[0024] The control unit 40 may control the movement of the transport device 20. When the control unit 40 controls the movement of the transport device 20, the control unit 40 can perform control to synchronize the movement of the transport unit 22 of the transport device 20 with the movement of the stacking movable unit 12 of the planar motor 10. The control unit 40 may also control the camera 30. In this case, the control unit 40 may control the pan, tilt and zoom operations of the camera 30, for example.

[0025] Next, the stacking movable part 12 and the operation movable part 13 will be further described with reference to FIG. 2. FIG. 2 is a perspective view of the stacking movable part 12 and the operation movable part 13. The stacking movable part 12 receives and stacks the electrode M1 supplied by the transport device 20. At this time, the stacking movable part 12 moves in the direction of the arrow in FIG. 2, which is the transport direction of the transport device 20. The operation movable part 13 stops at a position where it can operably contact the stacking movable part 12. Then, the stacking movable part 12 comes into contact with the operation movable part 13 while moving in the transport direction. As a result, the operation movable part 13 is in a state where it can receive the electrode M1, and further in a state where it can hold the received electrode M1.

[0026] The stacking movable part 12 has, as its main components, a first movable element 121, a base 122, an electrode holder 123, and a drive mechanism .

[0027] The first mover 121 is magnetically levitated above the stator 11 and can move above the main surface F1. The first mover 121 includes a magnet to achieve the above functions. The magnet is preferably a permanent magnet such as a neodymium magnet. The first mover 121 supports a base 122, an electrode holder 123, and a drive mechanism 124 on its upper portion.

[0028] The base 122 is a flat plate-like member including a main surface that receives the electrodes M1. The base 122 is installed so as to be movable up and down in order to stack the electrodes M1. The base 122 may be supported by an elastic body such as a spring so as to be movable up and down. The base 122 may be supported by a motor so as to be movable up and down. This allows the base 122 to move downward in accordance with the number of electrodes M1 to be stacked.

[0029] The electrode holder 123 holds down from above the base 122 installed on the top of the first mover 121 and the electrode M1 supplied to the top surface of the base 122. The electrode holder 123 is set to perform a predetermined operation by a drive mechanism 124. The predetermined operation will be described later.

[0030] Drive mechanism 124 receives an external force and drives electrode holding portion 123. Drive mechanism 124 has first lever 125 and second lever 126. First lever 125 and second lever 126 are operated by contacting operation portion 132 of operation movable portion 13, thereby driving electrode holding portion 123.

[0031] The operation movable part 13 mainly comprises a second movable element 131 and an operation part 132. The second movable element 131 is movable above the main surface F1. The second movable element 131 includes a magnet for floating and moving on the main surface F1, similar to the first movable element 121. The second movable element 131 also supports the operation part 132.

[0032] The operation unit 132 is fixed to the second movable element 131, and operates the drive mechanism 124 by coming into contact with the drive mechanism 124. The operation unit 132 in the present disclosure has a cam that engages with the first lever 125 and the second lever 126. Therefore, the operation unit 132 of the operation movable part 13 operates the first lever 125 and the second lever 126 that come into contact with the operation unit 13 to drive the electrode holding part 123 by changing the relative position between the stacking movable part 12 and the operation movable part 13.

[0033] Next, an example of the operation of the electrode holding part 123 and the driving mechanism 124 will be described with reference to Figures 3 and 4. Figure 3 is a first side view showing the operation of the stacking movable part 12 and the operation movable part 13.

[0034] In Fig. 3, the transport section 22 of the transport device 20 transports the electrode M1 in the transport direction. The stacking movable part 12, which is located below the transport section 22, moves in the transport direction in accordance with the transport section 22. Meanwhile, the operation movable part 13 is stopped downstream in the transport direction. The stacking movable part 12 is in a state immediately before coming into contact with the operation movable part 13. At this time, the electrode holding part 123 is in a holding state in which it holds the multiple electrodes M1 that have already been received from above.

[0035] A first lever 125 of the drive mechanism 124 has a follower at a position where it contacts a first cam 133 of the operation unit 132. The follower contacts and follows the first cam 133. When the follower of the first lever 125 is operated by the first cam 133, the first lever 125 drives the electrode holding unit 123. A second lever 126 of the drive mechanism 124 has a follower that contacts a second cam 134 of the operation unit 132. The electrode holding unit 123 has a structure that switches between a holding state in which the electrode M1 is pressed from above and an open state in which a new electrode M1 can be received from above in accordance with the movement of the follower.

[0036] 4 is a second side view showing the operation of the stacking movable part 12 and the operation movable part 13. The operation movable part 13 shown in FIG. 4 is in a state of contact with the stacking movable part 12 by further moving in the conveying direction after the state of FIG. 3. The first lever 125 is operated by the first cam 133 to drive the electrode holding part 123 to an open state. The second lever 126 is operated by the second cam 134 to drive the electrode holding part 123 to a state in which it is lifted upward. This makes the stacking movable part 12 ready to receive a new electrode M1 from the conveying part 22.

[0037] The transport unit 22 releases the electrode M1 that it has been holding and drops it downward. After receiving the new electrode M1, the stacking movable unit 12 moves further in the transport direction. Then, the first lever 125 and the second lever 126 are operated by the operation unit 132, and the electrode holding unit 123 switches from the open state to the holding state.

[0038] As described above, in the electrode stacking device 1 of the present disclosure, the operation section 132 of the operation movable part 13 has a cam that contacts the drive mechanism 124, and the drive mechanism 124 of the stacking movable part 12 has a follower that contacts the cam and follows it. In addition, the electrode holding section 123 has a structure that switches between a holding state in which the electrode M1 is pressed from above and an open state in which a new electrode M1 can be received from above in response to the movement of the follower. As a result, the electrode stacking device 1 can switch between the holding state and the open state by changing the relative positions of the stacking movable part 12 and the operation movable part 13 while they are in contact with each other.

[0039] As described above, the electrode stacking apparatus 1 further includes the transport device 20. The conveying device 20 holds and conveys the electrode M1 along a conveying path set at least above the stator 11, and supplies the electrode M1 to the stacking movable part 12 moving along the conveying path. In this way, the electrode stacking device 1 efficiently stacks the electrodes M1.

[0040] In the electrode stacking device 1 of the present disclosure, the control unit 40 moves the stacking movable part 12 in response to the transport device 20 that transports the electrode M1 along the transport path. In the electrode stacking device 1, the control unit 40 also controls the position of the operation movable part 13 so that the electrode holding part 123 is in an open state when the transport device 20 drops the electrode M1. In this way, the electrode stacking device 1 efficiently stacks the electrode M1.

[0041] Next, the operation of the stacking movable part 12 and the operation movable part 13 will be further described with reference to Fig. 5 and Fig. 6. Fig. 5 is a first top view showing the operation of the stacking movable part 12 and the operation movable part 13. Fig. 5 shows the positions of the stacking movable part 12 and the operation movable part 13 that change as time T progresses.

[0042] The electrode stacking device 1 shown in the upper part of the figure shows the positions of the transport parts 22, stacking movable parts 12, and operation movable parts 13 at time T=T11. At time T=T11, the four transport parts 22 are moving in the transport direction while holding the ends of the electrode M1. The four stacking movable parts 12 are in a standby state along the respective transport directions of the two rails 21. The four operation movable parts 13 are also standby on the planned paths of the respective operations of the stacking movable parts 12.

[0043] The electrode stacking device 1 shown in the middle of FIG. 5 shows the operation of the stacking movable part 12 and the operation movable part 13 at time T=T12 after time T=T11. For ease of understanding, the transport part 22 that transports the electrode M1 is omitted. At time T=T12, the stacking movable part 12 moves in the transport direction in accordance with the movement of the electrode M1. The stacking movable part 12 is in a position just before coming into contact with the operation movable part 13. The operation movable part 13 is waiting on the planned path of each operation of the stacking movable part 12.

[0044] 5 shows the operation of the stacking movable part 12 and the operation movable part 13 at time T=T13 after time T=T12. Here, the stacking movable part 12 is in contact with the operation movable part 13, and the electrode holding part 123 is in an open state. Therefore, after time T=T13, the stacking movable part 12 receives a new electrode M1 from the transport device 20.

[0045] Next, Fig. 6 will be described. Fig. 6 is a second top view showing the operation of the stacking movable part 12 and the operation movable part 13. Fig. 6 shows the operation of the electrode stacking device 1 in a state in which the electrode M1 is tilted around the vertical axis (around the Z axis). Fig. 6 shows the positions of the stacking movable part 12 and the operation movable part 13 that change as time T progresses.

[0046] The electrode stacking device 1 shown in the upper part of the figure shows the positions of the transport parts 22, stacking movable parts 12, and operation movable parts 13 at time T=T21. At time T=T21, the four transport parts 22 are moving in the transport direction while holding the ends of the electrode M1. However, the electrode M1 shown in FIG. 6 has an inclination of angle θ around the vertical axis.

[0047] The electrode stacking device 1 shown in the middle of FIG. 6 shows the operation of the stacking movable part 12 and the operation movable part 13 at time T=T22 after time T=T21. At time T=T22, the stacking movable part 12 moves in the conveying direction in accordance with the movement of the electrode M1. At this time, the stacking movable part 12 is in a position inclined at an angle θ around the vertical axis in accordance with the inclination of the electrode M1. The positions of the four stacking movable parts 12 are also adjusted in accordance with the position of the outer shape of the electrode M1. The stacking movable part 12 is in a position just before coming into contact with the operation movable part 13. The operation movable part 13 is waiting on the planned path of each operation of the stacking movable part 12. However, the operation movable part 13 is also in a state inclined at an angle θ around the vertical axis in accordance with the attitude of the stacking movable part 12.

[0048] 5 shows the operation of the movable part for stacking 12 and the movable part for operation 13 at time T=T23 after time T=T22. The movable part for stacking 12 comes into contact with the movable part for operation 13, so that the electrode holding part 123 is in an open state.

[0049] From time T=T22 to time T=T23, the four stacking movable parts 12 move in the conveying direction while maintaining the inclination at angle θ corresponding to the inclination of the electrode M1. At this time, the operation movable part 13 moves in a direction perpendicular to the conveying direction corresponding to the position of the stacking movable part 12. In the example of Fig. 6, the operation movable part 13 moves in the X-axis positive direction so as to maintain a contact state between the follower of the drive mechanism 124 and the operation part 132 in response to the movement of the stacking movable part 12 moving in the Y-axis positive direction while maintaining the inclination at angle θ around the vertical axis.

[0050] By the above-mentioned operation of the movable part for stacking 12 and the movable part for operation 13, the electrode stacking device 1 can preferably stack a new electrode M1 even if the electrode M1 is inclined. That is, the control unit 40 calculates the position and inclination of the electrode M1 from the image data, and controls the position and inclination of the movable part for stacking 12 and the movable part for operation 13 according to the calculation result.

[0051] As described above, in the electrode stacking device 1, the control unit 40 sets the inclination of the stacking movable part 12 in accordance with the inclination of the electrode M1 about the vertical axis based on image data obtained by photographing the attitude of the electrode M1 from above the stator 11. Furthermore, the control unit 40 controls the displacement of the operation movable part 13 in a direction perpendicular to the transport path in accordance with the position and inclination of the stacking movable part 12.

[0052] With the above-mentioned configuration, the electrode lamination device 1 can reduce the wasted area of ​​the electrodes to be laminated. In other words, the electrode lamination device 1 efficiently laminates the sheet electrodes by suppressing the positional deviation of the electrode M1 to be newly laminated. Furthermore, with the above-mentioned configuration, the electrode lamination device 1 realizes the transport and stacking of the sheet electrodes in a smaller area than when the sheet electrodes are transported using a conventional pallet. Furthermore, with the above-mentioned configuration, even if the size of the sheet electrodes is changed, the electrode lamination device 1 can flexibly respond to the stacking process by changing the settings of the positions of the transport unit 22 and the stacking movable unit 12.

[0053] As described above, the electrode lamination device 1 according to the present embodiment can suitably continuously laminate a plurality of sheet-like electrodes by sequentially supplying the sheet-like electrodes to the conveying device 20. That is, according to the present embodiment, it is possible to provide an electrode lamination device that suitably laminates sheet-like electrodes.

[0054] The program of the present disclosure includes a set of instructions (or software code) that, when loaded into a computer, causes the computer to perform one or more functions described in the embodiments. The program may be stored in a non-transitory computer-readable medium or a tangible storage medium. By way of example and not limitation, the computer-readable medium or tangible storage medium includes random-access memory (RAM), read-only memory (ROM), flash memory, solid-state drive (SSD) or other memory technology, CD-ROM, digital versatile disc (DVD), Blu-ray (registered trademark) disk or other optical disk storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage device. The program may be transmitted on a transitory computer-readable medium or communication medium. By way of example and not limitation, the transitory computer-readable medium or communication medium includes electrical, optical, acoustic, or other forms of propagating signals.

[0055] It should be noted that the present invention is not limited to the above, and various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the invention. [Explanation of symbols]

[0056] 1 Electrode stacking device 10 Planar Motor 11 Stator 12 Stacking movable part 13 Movable part for operation 14 Coil 20. Conveyor 21 Rail 22 Conveyor section 23 Hanging clamp 24 Hanging Base 30 Camera 40 Control section 121 1st mover 122 Foundation 123 Electrode holding part 124 Drive mechanism 125 First Lever 126 Second Lever 131 Second mover 132 Operation section 133 First Cam 134 Second Cam F1 Main surface M1 electrode

Claims

1. A stator having a horizontally disposed main surface and a plurality of coils below the main surface; a stacking movable part including a first movable element capable of moving by magnetic levitation above the main surface, a base installed on an upper part of the first movable element, an electrode holding part that holds down a sheet-like electrode supplied to an upper surface of the base from above, and a drive mechanism that drives the electrode holding part by receiving an external force; an operating movable part including a second movable element movable above the main surface and an operating part fixed to the second movable element and configured to operate the drive mechanism by contacting the drive mechanism; a control unit for controlling the operation of each of the stacking movable part and the operation movable part by setting a current flowing through the coil; Equipped Electrode stacking device.

2. the operation portion of the operation movable portion has a cam that comes into contact with the drive mechanism, the driving mechanism of the stacking movable part has a follower that comes into contact with the cam and follows it, the electrode holding portion has a structure that switches between a holding state in which the electrode is held from above and an open state in which a new electrode can be received from above in response to a movement of the follower; The electrode stacking device according to claim 1 .

3. a conveying device that holds and conveys the electrodes along a conveying path set at least above the stator, and supplies the electrodes to the stacking movable part that moves along the conveying path, The electrode stacking device according to claim 1 or 2.

4. the control unit moves the stacking movable part in response to the transport device that transports the electrode along the transport path, and controls a position of the operation movable part so that the electrode holding part is in an open state when the transport device drops the electrode. The electrode stacking device according to claim 3 .

5. the control unit sets a tilt of the stacking movable part in accordance with a tilt of the electrode about a vertical axis based on image data obtained by photographing a posture of the electrode from above the stator, and controls a displacement of the operation movable part in a direction perpendicular to the transport path in accordance with a position and tilt of the stacking movable part. The electrode stacking device according to claim 4 .

Images