JPH0266852A - Manufacture of pasting type separator for storage battery - Google Patents

Abstract

PURPOSE:To obtain a separator at a high efficiency and rapidly by providing a specific space width on both sides of a scheduled cutting line in the longitudinal or the lateral direction on the surface of a microporous sheet, giving a pair of adhesive applying lines, and after that, superposing and pasting fiber sheets of the same size, and cutting them. CONSTITUTION:From the nozzles 3a at the lower end of an adhesive releasing devices 3 provided in the crossing direction of a belt-form sheet 1, adhesive applying lines 5 parallel keeping specific spaces 4 are provided. On the way of conveying the sheet 1, a fiber sheet 8 wound on a roll shaft is released, superposed on the surface of the sheet 1, and passed through pressure rolls 9 to form a superposed sheet 10. On the way of the advance of the sheet 10, the adhesive is impregnated in the microporous sheet and solidified. After that, it is cross-cut by a pair of cutters 11 in a specific length. A large size of superposed sheet 12 is cut on a scheduled cutting line 6 by slitters 13, and superposed sheets 12a are formed. Since a separator has adhesive applying lines 5 in such a composition, an accurate positioning can be carried out when it is superposed with an electrode plate.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a bonded release plate for storage batteries.

[Conventional technology]

Conventionally, a plurality of strip-shaped adhesive autopsy fabrics are applied to a microporous sheet surface, which can be cut into multiple separators of predetermined dimensions, and which are parallel to each other with constant vertical and horizontal spacing. , A fiber sheet of the same shape and size made of a glass mat, a non-woven fabric of synthetic resin fiber, etc. is polymerized and adhered to the upper surface, and the polymer-adhered sheet is placed on the above-mentioned band-shaped adhesive-coated east, along its center line. The production of a large number of laminated separators of a predetermined size, which are cut vertically and horizontally and reinforced with glued autopsy cloth strips at least on both sides, is disclosed in Japanese Utility Model Publication No. 37-123.
43, Utility Model Publication No. 41-21219, etc.

[Problem to be solved by the invention]

A common technique for manufacturing the above-mentioned known bonded separators for storage batteries is cutting on the adhesive coated strips. In this case, if the adhesive is cut before it has completely solidified, the adhesive will adhere to the cutting blade, reducing cutting performance, making accurate cutting impossible, and reducing productivity.

[Means to solve the problem]

The present invention solves the above-mentioned conventional disadvantages, always maintains accurate and excellent cutting performance without reducing the cutting performance of the cutting blade due to adhesive, and provides a bonded separator for storage batteries that can be mass-produced smoothly. This method provides a method for manufacturing a multi-layer microporous sheet that can be cut into multiple separators of predetermined dimensions, and a plurality of microporous sheets that intersect vertically and horizontally and are parallel to each other with constant vertical and horizontal spacing. A pair of parallel adhesive autopsy fabric strips are applied on both sides of each planned cutting line on either side of the planned vertical and horizontal cutting lines of the book, sandwiching the cutting line and leaving a predetermined space width. It is characterized in that a fiber sheet of the same shape and size is polymerized and adhered to the entire upper surface, and the polymerized adhesive sheet is cut along a plurality of predetermined vertical and horizontal cutting lines within the space width.

[For production]

According to the above-mentioned method of the present invention, since each line to be cut exists in the space where no adhesive is applied between a pair of parallel adhesive autopsy fabrics, the cutting blade cuts the polymerized material on the planned cutting line. Since the adhesive sheet is cut, cutting can be performed even when the applied adhesive is not yet fully solidified, and the cutting performance is always maintained without adhesive adhering to the cutting blade. Unlike conventional methods, there is no need to wait until the adhesive has completely solidified before cutting, which shortens the work time. Furthermore, there is no wear and tear on the cutting blade due to cutting through the hardened adhesive, extending the service life. At the same time, bonded separators with predetermined dimensions can be obtained without variation.

When the adhesive is not colored with pigments, dyes, etc., the position of each pair of adhesive autopsy strips can be confirmed, which is useful for accurate application and adjustment of the position of the cutting blade.

When the multi-sheet microporous sheet is used in the form of a long and wide roll and is unwound and fed intermittently to one side, the above-mentioned adhesive application is applied continuously. The work, polymerization and pasting of the fiber sheet, and cutting of the polymerization and pasting sheet can be performed in sequence, improving work efficiency.

〔Example〕

Next, embodiments of the present invention will be described based on the accompanying drawings.

1 to 3 show an example of a manufacturing apparatus for carrying out the manufacturing method of the present invention. The roll-shaped microporous sheet 1 is unwound from one end, placed on an endless conveyor (not shown), and moved horizontally to one side. Four adhesive discharging devices 3 disposed above at regular intervals in the transverse direction of the sheet 1 apply adhesive onto the surface of the strip sheet 1 through a pair of left and right nozzles at the lower end of each discharging device 3. 3a, From 3a, a pair of left and right adhesive autopsy cloth strips 5.5 are parallel to each other with a predetermined space 4 between them.
administer. In this way, four pairs of parallel adhesive autopsy fabric strips 5.5 are provided at regular intervals on one side of the strip-shaped sheet as it is transferred.

The arrangement of the four adhesive discharging devices 3 is such that when cutting the strip sheet 1 in the width direction to obtain a large number of separators of a predetermined size, the four adhesive discharging devices 3 are arranged in advance so that the strip sheet 1 is cut at intervals equal to the width of the separators. In the longitudinal drawing where cutting is to be performed, a pair of nozzles 3a, 3a are positioned on the left and right of a longitudinal cutting line 6 (indicated by imaginary lines in the drawing) with a space interval of a predetermined width as the center. They are arranged so that

Thus, on the sheet 1 side, there is a predetermined vertical (longitudinal) cutting line 6 at the center of the space strip 4 of a predetermined width between each pair of parallel adhesive coated strips 5, 5. is made to exist. The adhesive autopsy cloth strip 5 is formed to have a desired width ranging from a narrow strip of about IIIN to a wide strip of about 5 inches, and the width of the space strip 4 between the pair of adhesive coated strips 5, 5 will be described later. Approximately 5 circles, which does not adhere to the cutting blade reliably, is suitable, but is not limited to this. As the adhesive, generally used are synthetic rubber adhesives such as acrylonitrile and chloroprene dissolved in a solvent to an appropriate viscosity, synthetic resin adhesives such as acrylic resin and polyethylene resin, and hot melt adhesives.

In addition, if a coloring agent such as a black pigment such as carbon black or other desired color pigment or dye is mixed into the adhesive in advance, the coating system 5 can be easily seen visually, and the fiber sheet described later can be seen through the adhesive. It is also possible to easily check whether the adhesive has been applied to a predetermined location, the position of the space strip 4 between the pair of application systems 5, 5, etc. It also facilitates positioning and adjustment of the nozzles 3a, 3a.

Next, while the unfolded strip sheet 1 is being conveyed, it is made of a glass fiber mat, non-woven fabric, etc., which has the same length and width as the strip sheet 1 prepared by winding it in a roll around a roll shaft 7 previously provided above the front. The fibrous sheet 8 is unwound and polymerized on the surface of the moving band-shaped microporous sheet 1, and passed through a pair of pressure rolls 9, 9 disposed with a predetermined space above and below it. Band-shaped polymeric sheet 1
and 8 are pressed and polymerized and adhered through each pair of adhesive autopsy fabric strips 5.5 to form a polymerized adhesive sheet 10. During the process, the adhesive impregnates the microporous sheet and hardens. Next, the polymeric sheet 10 is further transferred to one side, and in the middle of the transfer, a pair of cutters 11.1 are placed above and below the sheet in advance.
1, the polymer sheet 12 is cut transversely at a predetermined length, and a large number of sheets having a predetermined size are laminated and separated by cutting vertically and horizontally, thereby forming a large-sized polymeric sheet 12 that can be taken. Next, this large polymeric sheet 1
2 is further transferred to one side by an endless conveyor belt (not shown) arranged in parallel with a plurality of strips at intervals in the width direction, and a large polymeric sheet 12 is placed in advance on an extension line of each planned vertical cutting line 6. The sheet is cut along the planned cutting line 6 using four pairs of upper and lower slitters 13, 13, to form three strip-shaped polymeric sheets 12a separated along the cutting line 14. In the next step, these three strip-shaped polymeric sheets 12a are
As shown in FIG. 3, cut along each planned cutting line 15 in the transverse direction is performed using upper and lower pairs of cutters 16, 16 to produce 4 products of laminated separator 17 having predetermined dimensions as shown in FIG. Twelve sheets are obtained from the two strip-shaped sheets 12a. Note that it is preferable in terms of work efficiency to stack three of these strip-shaped polymeric sheets 12a and cut them at once.

In this way, a large number of products can be efficiently obtained one after another by the above-described continuous manufacturing method. In particular, according to the present invention, when cutting the multi-sheet large-sized polymeric sheet 12 into the width dimension of the separator plate of a predetermined dimension to obtain the strip-shaped polymeric sheets 12a, 12a of a predetermined width dimension. is a slitter 13 on a planned longitudinal cutting line 6 located on the center line within a predetermined space width 4 within the pair of parallel adhesive autopsy fabric strips 5, 5;
13, the cutting blade of the slitter 13°13 never comes into contact with the adhesive of the pair of adhesive autopsy fabrics 5.5 on both sides, so there is no deterioration in cutting performance due to adhesive adhesion. Furthermore, even if the adhesive is not sufficiently solidified for a while, it is possible to continuously and precisely cut the desired shape without waiting for its complete assimilation. In addition, the product laminated separator plate 17 has colored adhesive autopsy cloth strips 5.5 on both sides, so when stacking with electrode plates, accurate positioning is possible, and a correct stacked electrode plate group can be obtained. Since the outer free edges 17a, 17a of the coating system 5.5 are not coated with adhesive, they function effectively as electrolyte flow and impregnation parts.

FIG. 5 shows a modification of the above-mentioned embodiment. In this embodiment, a strip-shaped microporous sheet 1 and a strip-shaped fibrous sheet 8 are cut along a predetermined longitudinal cutting line in the middle, as in the above embodiment. 6 and a predetermined space width 4, and then polymerized and pasted to form a band-shaped polymeric sheet 10. Immediately during the transition process, the above-mentioned The slitters 13 and 13 are used to cut the sheet along the planned cutting line 6 in each length direction to produce long narrow strip-shaped polymeric sheets 10a, 10a... separated from each other along the cutting line 14, and then the sheet is pulled. In the subsequent transition process, the tips thereof are successively cut by a cutter 16 at their intended transverse cutting line 15, and immediately the laminated separator product 17 (
(Fig. 6) can be manufactured in large numbers one after another, and the step of first cutting and forming the large polymer sheet 12, as in the previous embodiment, can be omitted, and productivity can be further improved.

In addition, in order to prevent lateral positional deviation during the transportation of the continuous longitudinal strip-shaped polymeric sheet, positional deviation detection,
Preferably, an adjustment device is provided to ensure that the correct transition is always in place.

FIG. 7 shows a process in which a rectangular large microporous sheet 1 and a large fiber sheet 8 of the same shape and size, which can be obtained by cutting a large number of separators P of a predetermined size vertically and horizontally, are prepared in advance, and the large microporous sheet 8 is prepared in advance. After applying a pair of parallel adhesive autopsy fabric strips 5.5 to the fiber sheet 1 with a predetermined space width 4 spanning each side of each planned lateral cut line 14 thereof, the large fiber sheet 8 is polymerized. , and the polymerized sheet is sequentially cut along a plurality of planned vertical and horizontal cutting lines 6.6, . . . and 15, 15, . In such a case, a product separator 17 (FIG. 8) is obtained which has free edges 17a, 17a with no adhesive applied at the upper and lower edges, and is reinforced with adhesive autopsy fabric strips 5, 5 on the inside thereof. .

〔Effect of the invention〕

As described above, according to the present invention, a large number of separators having a predetermined size are cut onto a microporous sheet surface that can be obtained by cutting, and the predetermined cut lines are sandwiched between the predetermined cut lines on both sides of each of the predetermined longitudinal or transverse cut lines. After creating a pair of parallel adhesive autopsy fabric strips with a space width of As a result, the polymeric sheet can be cut without the adhesive applied parallel to both sides adhering to the cutting blade during cutting, so the cutting performance is not degraded and there is no variation in dimensional cutting, making it possible to cut the polymeric sheet accurately. A large number of bonded separators can be obtained, and furthermore, there is no need to take sufficient consideration of the time it takes for the adhesive to set, and the bonded separators can be obtained very efficiently and quickly.

In this case, when using a colored adhesive, checking the position of the applied strip will also improve workability. Further, according to the present invention, a roll-shaped fiber sheet similar to the longitudinally wide roll-shaped microporous sheet is used, and each pair of parallel adhesive autopsy fabric strips is continuously applied and both sheets are polymerized and pasted. When done, it has the effect of further improving productivity.

[Brief explanation of the drawing]

1 to 3 show an example of the implementation of the present invention, FIG. 1 is a side view of the V-making apparatus, FIG. 2 is a side view thereof, and FIG. 3 is a side view of the final process. 4 is a partially cutaway perspective view of a laminated separator manufactured according to the present invention, FIG. 5 is a plan view of a modified example, FIG. 6 is a plan view of the product, and FIG. The figure shows a perspective view of another embodiment, and FIG. 8 shows a perspective view of the product. 1... Rolled microporous sheet, rectangular large microporous sheet 3... Adhesive discharge device 3a, 3a... Pair of nozzles 4... Space width 55... Pair of adhesive autopsy fabrics 6... Vertical direction scheduled cutting line 8... Rolled fiber sheet, rectangular large fiber sheet 9... Pressure roll 10... Polymerized adhesive sheet 11... Cutter 13... Slitter 1
5... Vertical planned cutting line 16... Cutter 17.
...Laminated separator products 17a, 17a...Free edge P...Separator of predetermined dimensions

Claims (1)

[Scope of Claims] 1. On the surface of a multi-layer microporous sheet that can be cut into multiple separators of predetermined dimensions, a plurality of parallel sheets intersect in the vertical and horizontal directions and are parallel to each other with constant vertical and horizontal spacing. A pair of parallel adhesive application strips are applied on both sides of each planned cutting line on either side of the planned vertical and horizontal cutting lines, sandwiching the cutting line and leaving a predetermined space width, and then the upper surface of this sheet is A bonded separator for a storage battery, characterized in that a fiber sheet of the same shape and size is polymerized and pasted on the entire surface, and the polymerized sheet is cut along a plurality of planned vertical and horizontal cutting lines within the space width. manufacturing method. 2. The method for manufacturing a bonded separator for a storage battery according to claim 1, wherein the adhesive is colored with a coloring agent, and the coating stripes are applied using this. 3. The multi-plate microporous sheet is a long and wide belt-like sheet that is rolled up into a roll, and is unrolled and transferred to one side, and during the transfer, the unfolded sheet surface is coated in the longitudinal direction. A plurality of parallel strips of a pair of adhesive coated strips having the width of the space are applied, then a longitudinally wide roll-shaped fiber sheet is continuously polymerized and pasted on the upper surface thereof, and then the longitudinally wide rolled fiber sheet is polymerized and pasted. 2. The method of manufacturing a bonded separator for a storage battery according to claim 1, wherein the sheet is cut on a predetermined cutting line in the space, and then cut on a predetermined cutting line parallel to the width direction.