JPH0728699Y2 - Slurry coating molding equipment for manufacturing sintered plates for storage battery electrodes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a slurry coating and molding apparatus for producing a sintered plate for a storage battery electrode.

[Conventional technology]

In the conventional device of this type, a slit for passing a slurry-coated strip-shaped porous plate that is vertically pulled and moved by a pulling device is formed in the middle, and at the time of passing through the slit, the slurry coated on the strip-shaped porous plate is predetermined. Of a pair of opposing slit members that are applied and molded to the thickness and width of the.

[Problems to be solved by the device]

In the above device, the band-shaped perforated plate is pulled upward,
While passing through the slit of the opposing slit member and molding the coating slurry, the center is often oscillated to the left or right to deviate from the center, and as a result, a correct and constant position is obtained in the predetermined porous surface area. Therefore, there is a dislike that the coating slurry cannot be applied and molded. In order to prevent this, the strip-shaped porous plate,
Applying tension to the band-shaped perforated plate with a brake or dancer roller until it is unwound from the uncoiler and enters the slurry coating tank, and a meandering correction roller combined with a position detection sensor is provided for coating. Although the accuracy of the device was improved, these devices cause non-uniform tension in the band-shaped perforated plate, causing a so-called tension phenomenon, and as a result, a uniform thickness in the width direction of the perforated plate. Can no longer be applied and molded. Further, the positioning mechanism is unstable in its operation, such as in the initial stage of the operation in which the band-shaped porous plate is unwound and transferred from the uncoiler, and therefore the slurry coating is misaligned during the period until the operation is stabilized. Occurs, resulting in defective products. Therefore, provision of such a positioning mechanism or the above-mentioned brake mechanism causes a large tension or a tension phenomenon in the band-shaped perforated plate, and the equipment cost, management cost and operating cost of the device are also caused. Such is not preferable.

[Means for Solving the Problems]

The present invention provides a slurry coating and molding apparatus for manufacturing an electrode sintered plate for a storage battery, which improves the conventional problems, requires only simple equipment, and significantly improves the slurry coating positioning accuracy. The slurries applied to the strip-shaped porous plate are passed through a slit formed between a pair of opposed slit members provided on the slurry-coated strip-shaped porous plate obtained by passing through the slurry tank by a predetermined amount. In a slurry coating apparatus for manufacturing a battery electrode sintered plate for coating which is formed by coating and molding to a thickness and a width of the slit member, a pair of sliding members on both side edges of the slurry coating molded band-shaped porous plate passing through the slit are provided. The guide plates are arranged in parallel.

[Action]

Since the pair of guide plates of the present invention are in sliding contact with both side edges of the slurry-coated molded band-shaped porous plate to be pulled and transferred, the lateral movement of the band-shaped porous plate is controlled and prevented by these guide plates.
At all times, its center position is exactly retained. Therefore, a slurry coating molding layer can be obtained at a fixed position of the band-shaped porous plate. In this case, when the both ends of the pair of guide plates are formed into a curved surface or an inclined surface on the surface side that contacts both side edges of the slurry-coated molded band-shaped porous plate, one side edge of the band-shaped porous plate is formed. Alternatively, even if the other side edge is pressed against both ends of the guide plate, biting, cracking, etc. are prevented in advance. Further, when a distance of up to about 50 mm is provided between the end surfaces of the pair of guide plates and the slit member surface, good positioning accuracy with respect to the band-shaped porous plate is ensured.

〔Example〕

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 to 4 show an example of an apparatus A for manufacturing a sintered electrode plate for a storage battery, which is equipped with the slurry coating and molding apparatus 1 of the present invention,
Immediately below the device 1 of the present invention, a slurry tank 2 containing a slurry S composed of a metal powder for sintering, typically a thickening agent aqueous solution containing nickel powder as a main body, is installed. A guide roller 3 is provided below the guide roller 3 and an uncoiler 4 is provided on the side of the guide roller 3. A thin band-shaped perforated plate P having a thickness of, for example, about 0.1 mm prepared by winding the uncoiler 4 in a roll shape is prepared, and the winding is performed. The unwound strip-shaped perforated plate P is guided from the horizontal direction to the vertical direction via the guide roller 3, and passes through the slit 2a sealed at the center of the bottom wall of the slurry tank 2, and the book immediately above it. The device 1 is pulled and conveyed by the pulling device 7 provided at the uppermost position so as to pass through the slit 6 formed between the pair of opposed slit members 5, 5. The traction device 7 is composed of a pair of reversing rollers 7a and 7b.

In order to apply the slurry to the band-shaped perforated plate P and perform the coating molding, the band-shaped perforated plate P unwound from the uncoiler 4 by the rotation of the reversing roller 7 driven by the driving source is
After being unwound in the direction of the arrow and transferred, the guide roller 3 changes the direction from the horizontal direction to the vertical direction as shown in the drawing.
The viscous slurry S in the slurry tank 2 is applied to the entire surfaces of both sides of the strip-shaped porous plate P in the process of being moved upward and entering the slurry tank 2 in front of the slurry tank 2 and passing through the slurry tank 2. That is, the central porous surface area is filled and applied from both sides thereof, and at the same time, applied to both sides of the edge portions on both sides,
In this state, the slit 6 between the slit members 5 and 5 immediately above it
Pass through. As shown in FIG. 4, each of the slit members 5 and 5 has a downwardly inclined wall surface at the center in the width direction.
8a and right and left vertical wall surfaces 8b, 8b which are perpendicular to the vertical wall surfaces 8b, 8b are formed to form a slurry forming recessed hole 8, and the slits are formed at the same positions as the vertical wall surfaces 8b, 8b on both sides of the recessed hole 8. A pair of left and right scraping blades 9 and 9 are provided by slightly projecting from the member 5. 10 indicates a knife edge. It should be noted that the slit member 5 is provided with triangular spaces 11 and 11 for allowing excess slurry to escape between the downwardly inclined wall surface 8a and the regulation wall surfaces 8b and 8b orthogonal to the wall surface 8a so that the slurry has a uniform thickness. Guaranteed to be applied to the Thus, the band-shaped perforated plate P
While passing through the slit 6 between the opposing slurry members 5, 5, the slurry applied to the edge portions on both sides thereof is scraped by the scraping blades 9, 9 and 9, 9 which are in sliding contact with each other on both sides thereof. Taken. At the same time, the slurry deposited on both sides of the central portion is paint-molded by the opposing knife edges 10, 10 to a predetermined thickness and width, and as shown in FIG. Abbreviated as a coated plate) and transferred. In the drawing, the slurry filling plate P'is passed through a vertical drying oven 12 provided on the way of its transition to dry and solidify the slurry forming layer. In this state, the slurry coated molded plate P'is inverted by the pair of reversing rollers 7 and vertically lowered to pass through the vertical sintering furnace 13 at the other end thereof to sinter the dried slurry molded layer,
A band-shaped sintered plate is obtained. After that, the electrode plate is cut into a predetermined electrode plate size, the sintered plate is impregnated with an active material, subjected to chemical conversion treatment, washed with water and dried to produce a sintered electrode plate.

In the process of coating and molding the slurry S of the slurry-coated strip-shaped porous plate P through the slit 6, the slurry coating-molding apparatus 1 including the slit members 5 and 5 described above, the strip-shaped porous plate P is left or right. It is apt to oscillate, and the actual situation is that slurry coating cannot be performed at a fixed position.

In order to improve such inconvenience, the present invention provides the opposite slit members 5, 5 with both side edges of the slurry coating plate P ′ immediately after passing through the slit 6 formed therebetween.
A pair of parallel guide plates 14, 14 slidingly contacting p, p are arranged in the slurry coating and molding apparatus 1 of the present invention.
Each of the guide plates 14, 14 is made of a smooth metal or a hard synthetic resin plate having at least a smooth inner surface, and its dimensions are, for example, a thickness of 10 mm, a width of 30 mm, and a length (height) of 250 mm. To do.

Thus, when the band-shaped perforated plate P is moved by only the pair of reversing rollers 7, the conventional pulling force of the braking device, the positioning mechanism, or the like is not applied to the band-shaped perforated plate. The slurry-coated strip-shaped perforated plate P which passes between the slit members 5 and 5 without causing a phenomenon such as one-sided sticking is located at the center of the coating thickness and uniformly pulled over the entire width thereof to move upward. In addition, the slurry coating molded plate P'is capable of forming the slit member.
Immediately after exiting the slit 6 between 5, 5, the guide plates 14, 14
Since the guide plates 14 and 14 are slidably in contact with each other and are prevented from moving to the left and right to make a sliding transition, deviations to one side or the other side are suppressed by the guide plates 14 and 14 and are always kept at the center position. The perforated plate P can be held by the slurry tank 2 at a predetermined center position at all times while passing through the pair of slit members 5, 5, and its positioning accuracy can be improved. Therefore, the central axis of the band-shaped perforated plate P can be improved. A strip-shaped slurry coating layer having a predetermined width equal to the left and right is formed, and a good slurry filling plate P'without slurry coating is always obtained on the predetermined edge portions on both sides thereof. The lateral deviation of the band-shaped perforated plate P when passing through the slurry coating and molding apparatus 1 according to the present invention was about 0.5 mm when measured. Therefore, the band-shaped perforated plate P having a thin thickness of 0.1 mm, but made of stainless steel or the like is used as the slit member.
Since it is always in sliding contact with the inner surfaces of the left and right guide plates 14, 14 arranged on 5, 5, the side edge ends immediately by the guide plate 14 facing it at the moment of displacement to the left or right side. ,
When pushed back in the direction of the center line, it returns to the original center position, so that the perforated plate is substantially held in transition along the center line. It should be noted that, as is clear from the results of the experiment, the guide plate
The space between the lower edge of 14 and the upper surface of the slit member 5 is about
When it exceeds 50 mm, the lateral deviation of the strip plate tends to increase, and when it is significantly separated, the side edge of the strip plate tends to be bent by its corresponding guide plate to cause buckling. As a result, it was confirmed that the space interval is preferably about 50 mm or less.

Further, in the device of the present invention, both ends of each of the left and right guide plates 14 and 14 have a curved surface (R surface) or an inclined surface (chamfer) on the surface contacting both side edges of the slurry coating plate P '. It is preferable to form it. Because, if both ends of each guide plate 14 are square corners, the slurry coating plate P '
At the moment when is deviated to the right or left, the side edge may bite into the corner, hindering a smooth upward transition or cracking in the plate. Therefore, in order to ensure a smooth transition of the band-shaped perforated plate and a good coated molded product, as described above, the surface sides of the guide plates 14 which are in contact with the side edges of the slurry coated molded plate P ′ are curved. It is preferably a surface or an inclined surface.

In the case shown in the figure, an example is shown in which both sides of the guide plate 14 have the corners at right angles to the R surface (14a). In this case, the distance h between the rounded surface and the slit member 5 was 5 mm. Reference numeral 15 denotes an elongated attachment member having an L-shaped cross section, which is adhered to each guide plate 14 at its rising end and at its horizontal end.
It is fixed to the slit members 5, 5 by a stopper 16, whereby the guide plates 14, 14 are arranged and held at right angles to the slit members 5, 5 and parallel to each other.

Further, instead of the rounded or arcuate inclined surface, the inner corners of both ends of the guide plate are chamfered to form inclined surfaces, and an obtuse angle is formed between the guide plate and the inscribed vertical surface. By forming an inclined surface at 45 ° with respect to both side edges, it is possible to prevent biting and cracking due to pressure contact of both side edges of the band-shaped porous plate.

[Effect of device]

In the slurry coating and molding apparatus of the present invention, since the pair of parallel guide plates that are in sliding contact with both side edges of the slurry coating and molding band-shaped perforated plate that passes through the slits are arranged in the opposing slit members, the pair of guides By the plate, the slurry coating molded band-shaped porous plate can immediately suppress its rolling immediately after exiting the slit, and therefore the accuracy of slurry slurry coating molding can be remarkably improved, and the structure is simpler and less expensive than conventional ones. It has the effect that it can be configured with equipment costs. In this case, by making the surface side of both ends of the pair of guide plates in contact with both side edges of the band-shaped perforated plate into a curved surface or an inclined surface, the band-shaped perforated plate can be smoothly and crack-free transferred, and these The gap between the lower end of the guide plate and the upper surface of the slit member is about 50 mm at maximum, so that stable and stable transfer of the band-shaped perforated plate is guaranteed.
This brings the effect that stable and favorable slurry coating molding can be obtained on the plate.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is an apparatus for producing a sintered electrode plate for a storage battery equipped with the slurry coating and forming apparatus of the present invention, and FIG. FIG. 3 is a longitudinal sectional view of a part of a portion, FIG. 3 is a sectional view taken along line III-III of FIG.
The perspective view of a slit member is shown. DESCRIPTION OF SYMBOLS 1 ... Slurry coating / molding apparatus, 2 ... Slurry tank P ... Band-shaped perforated plate, p, p ... Both side edges P '... Slurry coating-molded belt-shaped perforated plate, S-slurry, 4 ... Uncoiler 5 ... Slit member, 6 ... Slit 7 ... Traction device, pair of reversing rollers, 8 ... Slurry forming concave hole 9 ... Scraping blade, 10 ... Knife edge 14, 14 ... Guide plate 14a, 14a ... R or upper or lower end surface of the guide plate Curved surface or inclined surface

Claims (3)

[Scope of utility model registration request] 1. A strip-shaped perforated plate is made to pass through a slit formed between a pair of opposing slit members provided in a slurry-coated strip-shaped perforated plate obtained by passing the slurry tank through a pulling device. In a slurry coating device for producing a sintered electrode for a storage battery, which is formed by coating and molding a slurry to be applied to a predetermined thickness and width, in the slit member, both sides of the slurry coating molded band-shaped porous plate passing through the slit. A slurry coating and forming apparatus for producing a sintered plate for a storage battery electrode, which comprises a pair of parallel guide plates that are in sliding contact with the edges. 2. The apparatus according to claim 1, wherein both ends of the pair of guide plates are formed as curved surfaces or inclined surfaces on the surface side in contact with both side edges of the band-shaped porous plate. 3. The apparatus according to claim 1, wherein there is a maximum spacing of about 50 mm between the end faces of the pair of guide plates and the slit member.