JP6835015B2 - Press equipment - Google Patents

Description

This specification discloses a press device.

Conventionally, as a press device of this type, a roll press device that pressurizes an electrode material in which an electrode mixture layer is formed on a current collector has been proposed (see, for example, Patent Document 1). This pressing device can press the electrode mixture layer by sandwiching it between two opposing rollers to increase the density of the electrode mixture layer.

JP-A-2018-14220

For example, an electrode of a lithium ion battery or the like is generally manufactured by applying a slurry-like electrode mixture in which an active material, a binder, or the like is mixed on both sides of a metal collecting foil and drying the electrode mixture. However, since the electrode after drying has a low density, the electrode is densified by compression by the roll press device. In this roll press, electrodes are passed through a gap between two rotating cylinders facing each other to increase the density. Originally, a roll press device is a rolling process in which a metal plate or the like is thinned and stretched for a long time. Used for. Therefore, when the electrode is densified by a roll press, the electrode is not only compressed in the thickness direction but also stretched in the plane direction orthogonal to the cylinder. That is, when the electrode density is increased, the thicker the electrode film thickness or the smaller the roll diameter, the greater the stretching action in the plane direction. The electrode has a composite composition, and in particular, since the metal current collector foil is placed in the center, residual stress accumulates in the electrode as the density increases due to differences in stretchability, causing deflection and cracks in the electrode. This may occur, which may reduce durability and safety.

The present disclosure has been made in view of such problems, and an object of the present disclosure is to provide a press device capable of further suppressing the occurrence of defects when increasing the density.

As a result of diligent research to achieve the above-mentioned object, the present inventors have been able to further suppress the occurrence of defects when increasing the density by adopting a structure capable of continuously performing vertical pressing. We found what we could do and completed the press device of the present disclosure.

That is, the press device disclosed in this specification is
A press device that continuously presses electrode members.
An indenter having a flat press surface and a support shaft arranged at a position where the press surface does not overlap,
The plurality of arranged indenters are moved together with the electrode member being conveyed in the conveying direction, and the indenter is moved to the electrode member side in a predetermined press region to press the electrode member on the press surface. And the moving press section to press
It is provided with an attitude control unit that controls the posture of the indenter so that the press surface and the surface of the electrode member are horizontal in the press region.

In this press device, a plurality of arranged indenters are moved together with the electrode member being conveyed in the conveying direction, and the indenter is moved to the electrode member side in a predetermined press region to form an indenter on the press surface. The electrode member is pressed and pressed. At this time, the press device controls the posture of the indenter so that the press surface and the surface of the electrode member are horizontal in the press region. In this press device, unlike the roll press, the press surface of the indenter presses against the electrode member in a horizontal state, so that residual stress in the transport direction of the electrode member is unlikely to be accumulated. Therefore, in this press device, it is possible to further suppress the occurrence of defects when increasing the density.

The schematic explanatory view which shows an example of the continuous press apparatus 10. The schematic explanatory view showing an example of a press unit 20. The plan view of the indenter 21, the moving press unit 30, and the attitude control unit 35. Explanatory drawing of a roll press and a vertical continuous press. The schematic explanatory view which shows an example of another continuous press apparatus 10B. The relationship diagram between the electrode thickness and the amount of deflection after pressing. Relationship diagram of penetration angle, elongation, stretching vector and roll diameter at the time of roll press conversion.

This embodiment will be described below with reference to the drawings. FIG. 1 is a schematic explanatory view showing a continuous press device 10 which is an example of the present disclosure. FIG. 2 is a schematic explanatory view showing an example of the press unit 20. In the enlarged view of FIG. 2, the indenter 21 is continuously shown near the bottom dead center where the press pressure is maximized. FIG. 3 is a plan view of the indenter 21, the moving press unit 30, and the attitude control unit 35. The continuous press device 10 is a device that continuously presses the electrode member 11. The continuous press device 10 is configured as a device that continuously presses the electrode member 11 in a direction perpendicular to the transport direction C of the electrode member 11. In this continuous press device 10, two press units 20 are arranged so as to face each other. The continuous press device 10 has a moving and fixing mechanism (not shown) arranged in a housing, and is configured to be able to change and fix the distance between the press units 20 and the approach angle θ. The press unit 20 includes an indenter 21, a moving press unit 30, and an attitude control unit 35. In the present embodiment, the left-right direction, the front-back direction, and the up-down direction will be described as shown in FIGS.

The electrode member 11 is an object to be pressed by the continuous pressing device 10, and includes a current collector 12 and a mixture layer 13. The electrode member 11 may be, for example, a positive electrode member of a power storage device or a negative electrode member. Examples of the power storage device include an alkali metal ion battery using an alkali metal ion (lithium ion or sodium ion) as a carrier, an electric double layer capacitor, an alkali metal ion capacitor, and the like. The current collector 12 is a support that supports the mixture layer 13 and is a member that has conductivity and collects current. The current collector 12 includes, for example, aluminum, titanium, stainless steel, nickel, iron, calcined carbon, conductive polymer, conductive glass, and the like, as well as aluminum for the purpose of improving adhesiveness, conductivity, and oxidation resistance. The surface of aluminum, copper, or the like may be treated with carbon, nickel, titanium, silver, or the like. The current collector 12 is preferably a metal foil. The mixture layer 13 is formed on the surface of the current collector 12, and contains, for example, an active material. The mixture layer 13 may be formed on only one surface of the current collector 12, or may be formed on both surfaces. In the configuration in which the two press units 20 face each other, the electrode member 11 in which the mixture layer 13 is formed on both sides of the current collector 12 can be pressed. The mixture layer 13 is formed by mixing, for example, an active material with a conductive material and a binder as needed, and adding an appropriate solvent to form a paste-like electrode mixture on the surface of the current collector 12. It may be applied and dried. Examples of the active material include sulfides containing a transition metal element, oxides containing an alkali metal element and a transition metal element, and compounds containing an alkali metal element, as the positive electrode active material. Examples of the negative electrode active material include inorganic compounds such as alkali metals, alkali metal alloys and tin compounds, carbonaceous materials capable of occluding and releasing alkali metal ions, composite oxides containing a plurality of elements, and conductive polymers. Be done. The continuous press device 10 presses the electrode member 11 after forming the mixture layer 13, and performs a process of increasing the density of the mixture layer 13.

The indenter 21 is a member that presses the electrode member 11, and has a flat press surface 22 and a support shaft 23 arranged at a position where the press surface 22 does not overlap. Further, the indenter 21 has an attitude control member 24. In the press unit 20, a plurality of arranged indenters 21 are connected via a chain 31, and a gap is formed in the press surface 22 in a predetermined press region A (see FIG. 1) in contact with the electrode member 11. The electrode member 11 is pressed in sequence. Here, the predetermined press area means an area from the position where the press is started to the position where the press ends. In this press unit 20, the electrode member 11 can be pressed without forming a seam. The support shaft 23 is arranged on both end faces (end faces 26, see FIG. 3) in a direction orthogonal to the transport direction C of the electrode member 11. The support shaft 23 is arranged slightly below the center of the end face 26. A chain 31 is engaged with the support shaft 23, and the indenter 21 is connected to the support shaft 23 without a gap by the chain 31. The attitude control member 24 is a pin for controlling the attitude of the indenter 21, and is provided on the surface (upper surface) of the indenter 21 opposite to the press surface. The attitude control member 24 controls the attitude of the indenter 21 by being guided by the gap of the guide 36 and moving.

The indenter 21 has a trapezoidal shape of an end surface 26 (see FIG. 3) orthogonal to the transport direction C of the electrode member 11 with the front-rear direction in FIG. 3 as the longitudinal direction. As shown in FIG. 2, the indenter 21 is an isosceles triangle (one point in the enlarged view) connecting the center of the rotation axis of the rotation trajectory on which the support shaft 23 moves when viewed from the end surface 26 side and the end portion of the press surface 22. An inclined surface 25 that goes inside the chain line) is formed. Since the indenter 21 has such an inclined surface 25, the indenter 21 is less likely to interfere with the adjacent indenter 21 when moving along the rotation trajectory. The upper surface of the indenter 21 does not have to be formed horizontally with the press surface 22.

The moving press unit 30 moves the plurality of arranged indenters 21 together with the electrode member 11 conveyed in the transfer direction C, and moves the indenter 21 toward the electrode member 11 side in the press region A on the press surface 22. It is a mechanism that presses and presses the electrode member 11. The moving press unit 30 has a chain 31 arranged on a support shaft 23 arranged on the indenter 21, a sprocket 32 meshed with the chain 31, and a drive unit 33 for rotationally driving the sprocket 32. The chain 31 is disposed on the support shaft 23 on both end faces 26. In FIGS. 1 and 2, the sprocket 32 is indicated by a dotted circle. The drive unit 33 is a motor that rotationally drives the sprocket 32. The drive unit 33 may be directly connected to the rotation shaft of the sprocket 32, or may be meshed with the sprocket 32 via one or more gears.

As shown in FIGS. 1 and 2, the moving press unit 30 supports and continuously moves the support shaft 23 on a rotary track, particularly on an oval rotary track, in a state where a plurality of indenters 21 are connected. When the indenter 21 is moved on the oval rotating trajectory, for example, the approach angle θ of the indenter 21 can be easily adjusted, and a plurality of sprockets 32 can be provided (see FIG. 1). It can be done well. The length L (FIG. 1) of the moving press unit 30 in the transport direction is preferably twice or more the diameter of the sprocket 32. The sprocket 32 is provided on the front side and the back side of the indenter 21, and the positions of the sprocket blades of both are synchronized. Further, when driving a chain on an oval rotating track, paired sprockets are required on one end side and the other end side (left and right sprockets in FIG. 1), but the number of teeth of these sprockets, The diameters may be the same or different.

Here, the approach angle θ of the indenter 21 is the trajectory connecting the center of the press surface 22 when viewed from the end surface 26 side of the indenter 21 (excluding the vicinity of the bottom dead center which becomes horizontal) and the transport surface for transporting the electrode member 11. It means the angle (°) formed by the (see FIG. 2). In particular, the angle formed by the tangent line and the transport surface at the point where the electrode member 11 and the indenter 21 start contact in the trajectory connecting the centers of the press surface 22 is defined as the approach angle θ. Further, the approach angle θ of the roll press device (see FIG. 4A) is an angle formed by the tangent line and the transport surface at the point where the electrode member 11 and the indenter 21 start contact. Further, since the diameter of the arc (see the two-dot chain line in FIG. 2) formed by the rotating track connecting the centers of the press surfaces 22 can be treated in the same manner as the diameter of the roll in the roll press device, the roll diameter can be conveniently handled. Also called R. The moving press unit 30 supports and moves the support shaft 23 on a rotation orbit (dotted line circle in FIG. 2) different from the orbit (two-dot chain line circle in FIG. 2) connecting the centers of the press surfaces 22 of the indenter 21. As the rotation trajectory, for example, it is preferable that the rotation trajectory is inside the central trajectory of the press surface 22. When the support shaft 23 is supported on such a rotating track, for example, the support shaft 23 can be formed sufficiently thicker than when the support shaft 23 is provided in the vicinity of the press surface 22, and the load of the indenter 21 can be increased. Can be enhanced. Further, the moving press unit 30 preferably has an approach angle θ of the indenter 21 of 10 ° or less. When the approach angle θ is 10 ° or less, the stretch ratio of the mixture layer 13 in the transport direction C can be further reduced, and the residual stress of the electrode member 11 can be further reduced. The approach angle θ is more preferably smaller, more preferably 5 ° or less, still more preferably 3 ° or less. In the continuous press device 10, the press units 20 are opposed to each other in the vertical direction, but the approach angle θ of the indenter 21 may be the same in the upper and lower press units 20 or may be different. For example, the lower press unit 20 may be horizontal (approach angle 0 °). The drive speeds of the chains 31 may be equal in the two press units 20.

The attitude control unit 35 controls the attitude of the indenter 21 so that the press surface 22 and the surface of the electrode member 11 are horizontal in the press region A. The attitude control unit 35 may be a guide 36 that guides the attitude control member 24. The attitude control unit 35 is preferably a guide 36 that guides the attitude control member 24 onto the rotation trajectory inside the rotation trajectory of the support shaft 23. In the attitude control unit 35, the attitude of the indenter 21 can be controlled by a relatively simple configuration of the guide 36. As shown in the enlarged view of FIG. 2, the attitude control unit 35 controls the attitude until the bottom dead center of the rotation trajectory of the support shaft 23 is passed in a posture in which the press surface 22 and the surface of the electrode member 11 are horizontal. It is preferable that the member 24 is guided. If the indenter 21 moves in the rotational trajectory as it is when it is separated from the electrode member 11, the corner of the press surface 22 may bite into the surface of the electrode member 11. Since the attitude control unit 35 keeps the indenter 21 horizontal even when it is separated from the electrode member 11, it is possible to prevent damage to the electrode member 11 due to the corner of the rear end of the indenter 21. The guide 36 of the attitude control unit 35 may be provided on the entire circumference inside the moving press unit 30, or may be provided only in the press area A. Further, the attitude control unit 35 has a pressing spring 37 as shown in FIG. The pressing spring 37 is a member that urges the indenter 21 in a direction that keeps the press surface 22 of the indenter 21 facing the electrode member 11 horizontal. By doing so, the press surface 22 of the indenter 21 approaches and presses the electrode member 11 in a horizontal state, so that the stretch ratio of the mixture layer 13 in the transport direction C can be further reduced, and the electrode The residual stress of the member 11 can be further reduced.

Here, the influence of the press processing between a general roll press device and a continuous vertical press device will be considered. FIG. 4 is an explanatory view of a roll press (FIG. 4A) and a vertical continuous press (FIG. 4B). As shown in FIG. 4A, since the roll press is rolled, the electrode member 11 to be pressed is compressed in the vertical direction and rolled in the horizontal direction. Therefore, the electrode member 11 contains residual stress, which causes peeling, cutting, bias, and the like. On the other hand, as shown in FIG. 4B, in the continuous vertical press, the electrode member 11 is compressed in the substantially vertical direction, and rolling in the horizontal direction is considerably suppressed. Therefore, in the continuous press device 10 adopting the above-mentioned continuous vertical press method, unlike the roll press, the press surface 22 of the indenter 21 presses against the electrode member 11 in a horizontal state, so that the electrode member 11 is conveyed in the transport direction. It is difficult to accumulate the residual stress of. It is conceivable to press the electrode member 11 at one time by a batch type vertical press using an indenter having a large area, but it is difficult to realize because it is necessary to apply an extremely large load to the entire indenter. Since the continuous press device 10 uses a plurality of indenters 21, the load applied to one indenter 21 can be small, and the residual stress in the transport direction can be reduced. Therefore, when increasing the density of the mixture layer 13. The occurrence of defects can be further suppressed.

It goes without saying that the present disclosure is not limited to the above-described embodiment, and can be implemented in various embodiments as long as it belongs to the technical scope of the present disclosure.

For example, in the above-described embodiment, the structure is such that the two press units 20 face each other, but the press unit 20 may be provided as one. For example, the transport device for transporting the electrode member 11 and the press unit 20 may be opposed to each other.

In the above-described embodiment, the end face 26 is a trapezoidal indenter 21, but the present invention is not limited to this. FIG. 5 is a schematic explanatory view showing an example of another continuous press device 10B. The continuous press device 10B includes a press unit 20 in which a plurality of indenters 21B having semicircular end faces are arranged. Also in this continuous press device 10B, the occurrence of defects can be further suppressed when the density of the mixture layer 13 is increased. In the continuous press device 10B, the basic structure of the continuous vertical press is established, but in the semicircular indenter 21B, the support shaft 23 and the attitude control member 24 need to be made smaller. Therefore, the indenter is preferably trapezoidal in consideration of pressing force and the like.

In the above-described embodiment, the attitude control unit 35 is a guide 36 that guides the attitude control member 24, but is not limited to the guide 36 if the attitude of the indenter 21 is controlled. Further, although the attitude control unit 35 is provided with the pressing spring 37, this may be omitted. For example, the attitude control member 24 may be provided at an eccentric position, and the press surface 22 may be kept horizontal with respect to the electrode member 11 by the guide 36.

In the above-described embodiment, the moving press unit 30 includes the chain 31, the sprocket 32, and the drive unit 33, but the present invention is not particularly limited thereto. For example, the support shaft 23 may be connected by a connecting member other than the chain. Further, the indenter 21 may be moved by a structure other than the chain 31 and the sprocket 32, such as by moving the connecting member with a pair of rollers.

Hereinafter, the results of studies on the press processing of the press apparatus disclosed in the present specification will be described as examples.

The amount of deflection x of the electrode member pressed by the conventional roll press or vertical press was examined. In order to convert the residual stress into strain and make it easier to understand, the experiment was conducted by applying the mixture layer to only one side of the metal current collector, not to both sides. A positive electrode slurry (Li composite oxide) for a general Li battery is applied to one side of an Al current collector foil (thickness 15 μm) and dried, and a negative electrode slurry containing graphite is applied to a Cu current collector foil (thickness 10 μm). ) Was applied to one side to prepare a dried sample. The electrode was coated and dried by changing the basis weight of each mixture layer and pressed to a predetermined density by changing the diameter of the press roll, and the amount of deflection x (mm) of the electrode after punching to a diameter of 20 mm was measured. Table 1 summarizes the basis weight, film thickness, and deflection amount (mm) of the positive electrode and the negative electrode. FIG. 6 is a diagram showing the relationship between the electrode thickness and the amount of deflection after pressing. As shown in Table 1 and FIG. 6, in the roll press, it was found that the larger the coating amount and the thicker the film thickness, or the smaller the diameter of the press roll, the larger the amount of deflection of the electrode. Further, in this measurement result, it was found that the amount of deflection x was larger in the positive electrode than in the negative electrode. Further, it was found that the negative electrode having a large amount of deflection easily causes the interface slip between the current collector foil and the electrode because the interface between the current collector and the mixture layer is peeled off. When the above test is performed with electrodes coated with a mixture layer on both sides of the current collector, the electrodes do not bend because the residual stresses are balanced on the front and back sides, but the internal stress corresponding to the amount of deflection of the single-sided coating is the electrode. It can be said that it remains inside. If the residual stress is larger than a certain level, it is expected that the electrodes will crack or the electrodes will be cut due to some expansion and contraction of the electrodes due to charging and discharging after battery assembly, and the durability and safety will decrease. It was. On the other hand, it was found that the vertical press has a small amount of deflection and less defects such as peeling. Therefore, it has been found that a vertical press is more preferable when manufacturing a thicker film electrode member.

Next, the elongation when the electrode member 11 having a thickness of 3 mm is pressed by a conventional roll press and a vertical press is considered. FIG. 7 is a relationship diagram of penetration angle, elongation, stretching vector and roll diameter at the time of roll press conversion, FIG. 7A is a table summarizing each numerical value, and FIG. 7B is a description of roll diameter R, approach angle θ and stretching vector. It is a figure. FIG. 7A is a table summarizing the roll diameter and stretching ratio of the roll press and the stretching ratio of the vertical press when the approach angle θ is changed in the range of 12.58 ° to 3 °. In a roll press having a diameter of 25 cm, the vector ratio in the stretching direction at the approach angle (12.58 °) at the start of pressing was 22.3. Therefore, it was found that the roll press stretched by 22.3% in the transport direction (horizontal direction) by the bottom dead center assuming that there was no slippage. On the other hand, when the vector ratio is calculated assuming that the connected semicircular indenters are connected in a circular orbit with a diameter of 25 cm and start pressing at the same approach angle of 12.58 °, the horizontal component that is 100 at bottom dead center is It was 97.6 at the start of the press, and it was found that it increased by 2.4% to the bottom dead center. That is, it was found that in the vertical press, the horizontal stretching was suppressed to about 1/10 of the roll press in the same trajectory. Further, the draw ratio of the roll press was 5.2% even when the roll diameter R was increased to an unrealistic 440 cm, which was reduced to only about 1/4 of the case where the roll diameter was 25 cm. On the other hand, it was found that the draw ratio of the continuous vertical press was drastically reduced to 0.38% when the approach angle was 5 °, and could be reduced to about 1/60 when the roll diameter R was 25 cm. As described above, it was found that the vertical press originally has a feature of low stretching ratio, and the approach angle θ can be reduced without increasing the size of the apparatus, so that an extremely low stretching ratio can be achieved.

From the above results, a continuous press device 10 provided with a continuous vertical press mechanism was designed (FIGS. 1 to 3). The shape of the indenter (cross-sectional shape) was trapezoidal. The cross-sectional shape of this trapezoid does not have to be a trapezoid as long as it is smaller than the isosceles triangle connecting the center of the chain-driven sprocket shaft and the press surface of the indenter. If the cross-sectional shape is larger than this isosceles triangle, the indenters interfere with each other during driving and cannot operate. The width of the pressed surface of the indenter and the distance between the support shafts as seen from the end face were set to 20 mm, the height of the indenter was set to 25 mm, and the side of the upper surface of the indenter was set to 10 mm. In this case, even if it is driven by a sprocket having a diameter of 150 mm, adjacent indenters do not interfere with each other and the operation can be performed smoothly. Further, by forming the indenter into a trapezoidal shape, the diameter of the support shaft can be increased. Here, the diameter of the support shaft is set to 10 mm. Support shafts were provided on both end faces of the indenter, connected by a chain having a pitch of 20 mm, and driven by a sprocket having a diameter of 150 mm. The sprockets were provided on the front side and the back side of the indenter, and the positions of the sprockets blades of both were synchronized. Further, in order to drive the chain, paired sprockets are required on one end side and the other end side, but the number of teeth and the diameter of these sprockets may be the same or different. The approach angle at the position where the indenter starts contacting the electrode member is preferably in the range of 10 ° or less, and is set to 5 ° here. Further, although the press units are opposed to each other in the vertical direction, the approach angle θ of the indenter may be the same in the vertical direction or may be different, but the same approach angle θ is used. The distance between the upper and lower chains can be controlled between 0 and 10 mm.

Further, this continuous press device is provided with an attitude control unit. If the continuous press is driven without the attitude control unit, the electrode member may start pressing with the press surface of the indenter not horizontal. When the end face of the indenter is trapezoidal, the press surface always faces outward and does not tilt significantly from the horizontal due to the shape limitation. When the electrode member is hard, it is naturally adjusted to be horizontal with pressure, but when the electrode is easily deformed, the pressed surface may not be horizontal at the initial stage of pressing. If the attitude control unit is provided, such problems can be further reduced. A pin-shaped attitude control member having a diameter of 5 mm was provided above the support shaft of the indenter. Since the indenter can be tilted around the support shaft, a pressing spring is provided so that the press surface is urged horizontally. Then, in the press region A, the attitude control member is guided by the guide, so that the indenter is attitude-controlled so that the press surfaces are parallel to each other. After the indenter reached the bottom dead center, the press surface was kept horizontal for a while by the guide to prevent the end of the indenter press surface from biting into the electrode, and a smooth electrode was obtained. With the above structure, it was possible to construct a vertical continuous press capable of continuous operation.

The material, shape, processing tolerance, motor type, etc. of each part may be optimally selected according to the desired press pressure, electrode density, and the like. Further, each configuration is not particularly limited to the above size, and a desired size may be selected according to the electrode member. The support shaft of the indenter is preferably an oil-free shaft, but it may be an oil seal shaft. The attitude control member does not have to be pin-shaped. Further, although not shown, a brush for cleaning the indenter press surface after pressing, a vacuum cleaner, or the like may be provided.

It should be noted that the present disclosure is not limited to the above-described examples, and it goes without saying that the present disclosure can be carried out in various aspects as long as it belongs to the technical scope of the present disclosure.

The press apparatus disclosed herein can be used in the field of manufacturing storage devices.

10,10B continuous press device, 11 electrode member, 12 current collector, 13 mixture layer, 20 press unit, 21,21B indenter, 22 press surface, 23 support shaft, 24 attitude control member, 25 inclined surface, 26 end surface, 30 Moving press section, 31 chain, 32 sprocket, 33 drive section, 35 attitude control section, 36 guide, 37 pressing spring, A press area, C transport direction, L length, R roll diameter, θ approach angle.

Claims (15)

A press device that continuously presses electrode members.
An indenter having a flat press surface and a support shaft arranged at a position where the press surface does not overlap,
A plurality of said indenter arranged to move together with the electrode member being conveyed in the conveying direction, and stepwise the electrode member to move the該圧Ko to the electrode member-side in a predetermined pressed region by the pressing surface and moving the press portion continuous vertically pressed by pressing vertically,
An attitude control unit that controls the posture of the indenter so that the press surface and the surface of the electrode member are horizontal in the press region.
Press equipment equipped with. A press device that continuously presses electrode members.
An indenter having a flat press surface and a support shaft arranged at a position where the press surface does not overlap,
The plurality of arranged indenters are moved together with the electrode member being conveyed in the conveying direction, and the indenter is moved to the electrode member side in a predetermined press region to press the electrode member on the press surface. And the moving press section to press
A posture control unit for controlling the posture of the indenter so that the press surface and the surface of the electrode member are horizontal in the press region is provided .
The moving press unit has a chain arranged on a support shaft arranged on the indenter, a sprocket meshed with the chain, and a drive unit for rotationally driving the sprocket.
Press equipment. A press device that continuously presses electrode members.
An indenter having a flat press surface and a support shaft arranged at a position where the press surface does not overlap,
The plurality of arranged indenters are moved together with the electrode member being conveyed in the conveying direction, and the indenter is moved to the electrode member side in a predetermined press region to press the electrode member on the press surface. And the moving press section to press
A posture control unit for controlling the posture of the indenter so that the press surface and the surface of the electrode member are horizontal in the press region is provided .
The indenter has an attitude control member and
The moving press unit supports the support shaft on a rotary track in a state where a plurality of the indenters are connected and continuously moves the support shaft.
The attitude control unit is a guide that guides the attitude control member to a position past the bottom dead center of the rotation trajectory of the support shaft in a posture in which the press surface and the surface of the electrode member are horizontal.
Press equipment. A press device that continuously presses electrode members.
An indenter having a flat press surface and a support shaft arranged at a position where the press surface does not overlap,
The plurality of arranged indenters are moved together with the electrode member being conveyed in the conveying direction, and the indenter is moved to the electrode member side in a predetermined press region to press the electrode member on the press surface. And the moving press section to press
A posture control unit for controlling the posture of the indenter so that the press surface and the surface of the electrode member are horizontal in the press region is provided .
The indenter has an inclined surface formed inside an isosceles triangle connecting the center of the rotation axis of the rotation trajectory to which the support shaft moves when viewed from the end surface side and the end of the press surface.
Press equipment. According to claim 3 or 4, the moving press portion includes a chain disposed on a support shaft disposed on the indenter, a sprocket meshed with the chain, and a drive portion for rotationally driving the sprocket. The press device described. The indenter has an attitude control member and
The moving press unit supports the support shaft on a rotary track in a state where a plurality of the indenters are connected and continuously moves the support shaft.
The attitude control unit is a guide that guides the attitude control member to a position past the bottom dead center of the rotation trajectory of the support shaft in a posture in which the press surface and the surface of the electrode member are horizontal. The press device according to any one of 2, 4, and 5. The indenter has an inclined surface formed inside an isosceles triangle connecting the center of the rotation axis of the rotation trajectory to which the support shaft moves when viewed from the end surface side and the end portion of the press surface. The press device according to any one of 1, 3, 5, and 6. The press device according to any one of claims 1 to 7, wherein the moving press unit supports the support shaft on a rotary track and continuously moves the support shaft in a state where a plurality of the indenters are connected. The press device according to any one of claims 1 to 8, wherein the moving press unit supports and continuously moves the plurality of indenters on the elliptical rotary track. The press device according to any one of claims 1 to 8, wherein the moving press unit supports and moves the support shaft on a rotation trajectory different from the trajectory connecting the centers of the press surfaces of the indenter. The moving press unit according to any one of claims 1 to 10 , wherein the indenter has an approach angle of 10 ° or less between the track connecting the center of the press surface and the transport surface of the electrode member. Press equipment. The indenter has an attitude control member and
The press device according to any one of claims 1 to 11 , wherein the attitude control unit is a guide for guiding the attitude control member. The indenter has an attitude control member and
The moving press unit supports the support shaft on a rotary track in a state where a plurality of the indenters are connected and continuously moves the support shaft.
The press device according to any one of claims 1 to 12 , wherein the attitude control unit is a guide for guiding the attitude control member onto the rotation track inside the rotation track of the support shaft. The press device according to any one of claims 1 to 13 , wherein the indenter has a trapezoidal end face. The press device according to any one of claims 1 to 14 , wherein a press unit including the indenter, the moving press unit, and the attitude control unit is arranged so as to face each other.