JPH069896B2 - Space plate manufacturing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a spacing plate having a spacing structure, which is a constituent element of corrugated paper, a battery having a laminated structure, a heat exchanger having a laminated structure, and more particularly, a spacing structure. Relates to an improvement of a manufacturing apparatus of a spacer plate formed by transfer of resin.

[Prior Art] The manufacture of the spacing plate having the above-mentioned structure has hitherto been carried out in JP-A-57-205966 and JP-A-54-72.
It has been manufactured by the device disclosed in Japanese Patent Publication No. 43-43, or a manufacturing device that forms a plurality of rows of resin ribs that hold a space on a base paper by transfer. In the latter case, a molten resin of hot-melt type is supplied by a nozzle to a molding groove of a transfer roller having a plurality of tubular molding grooves formed in the circumferential direction and having a predetermined cross-sectional shape on the outer periphery, and the resin is supplied. The apparatus is configured such that a transfer base paper is fed to the outer peripheral surface of the transfer roller, and a plurality of rows of resin ribs are formed on one surface of the transfer base paper by transfer. The conventional nozzle 10 for supplying the resin to the molding groove in the manufacturing apparatus by this transfer has a relatively general structure as shown in FIGS. 5 and 6. That is, it is configured such that a screw can be mounted, a hole 11 through which a resin is passed is formed on the center line, and the tip is tapered. The outer diameter D at the end of the discharge port at the tip of the nozzle 10 is larger than the discharge hole diameter d, and the discharge resin diameter d when a highly viscous resin is discharged.
1 has a relationship of d <d1 <D, which is larger than the diameter d of the discharge hole.

[Problems to be Solved by the Invention] In the above-described conventional spacing plate manufacturing apparatus by transfer, when the resin is discharged into the molding groove 12 by the nozzle 10, the discharge resin diameter d1 becomes larger than the discharge hole diameter d.
As shown in FIG. 5, the resin is pushed into the molding groove 12 while air is being taken in, and bubbles 13 are formed in the filled resin, or the resin that becomes burrs when the base paper is pressed as shown in FIG. It includes problems that need to be solved, such as being able to easily produce defective products.

The present invention has been made in order to solve such a conventional problem, and an object thereof is to obtain a spacing plate manufacturing apparatus capable of manufacturing at high speed a spacing plate having stable resin rib size and shape. Is.

[Means for Solving the Problems] A device for manufacturing a spacing plate according to the present invention is a hot-melt molding device for a transfer roller having a plurality of annular molding grooves formed in the circumferential direction and having a predetermined cross-sectional shape on the outer periphery. The outer diameter of the tip of the nozzle for filling the molten resin of the type is configured to be smaller than the groove width of the outer peripheral portion of the molding groove, and the tip of the nozzle is brought close to or slightly into the center of the molding groove.

[Operation] In the present invention, since the outer diameter of the tip of the nozzle is smaller than the groove width of the outer peripheral portion of the molding groove, when filling the molding groove with resin,
Since the resin is not hermetically sealed and is open to the atmosphere, air is not entrained, air bubbles are almost not formed, and the resin that matches the capacity of the molding groove is supplied, so burrs are generated. Therefore, the resin rib can be continuously molded at high speed.

[Embodiment] FIGS. 1 to 4 show an embodiment of the present invention. The manufacturing apparatus of this example also has a transfer method interval in which a conventional resin rib is formed on a transfer base paper (a generic name for a thin flat sheet material having low rigidity, not necessarily indicating a paper) by transfer. It is basically the same as the plate manufacturing apparatus. That is, the manufacturing apparatus of this spacing plate has a transfer roller 2 having a plurality of annular molding grooves 1 formed in the circumferential direction and having a predetermined cross-sectional shape on the outer periphery, and an annular molding groove 1 of the transfer roller 2. Hot melt type molten resin gun
A resin supply device that is supplied by the nozzle 3, a base paper supply device that supplies the transfer base paper to the outer peripheral surface of the transfer roller 2 to which the resin is supplied, and a double row of resin ribs formed by the transfer roller 2. And an adhesive layer transfer device for forming an adhesive layer of an adhesive having a low melting point on the corner apex by transfer.

The transfer roller 2 is horizontally supported and is rotated in a fixed direction by a motor via a speed reducer. The transfer roller 2 is provided with a plurality of annular molding grooves 1 continuous in the circumferential direction on the outer periphery of the transfer roller 2 at predetermined intervals in the center line direction. The molding groove 1 is formed with a cross-sectional shape and dimensions that match the cross-sectional shape and dimensions of the resin rib to be formed. The surface of the annular molding groove 1 is coated with a resin such as tetrafluoroethylene in order to improve the releasability from the resin.

The resin supply device comprises a hot melt applicator, a hose, and a gun nozzle 3. The hot melt applicator is a resin melting furnace with a built-in gear pump.
The molten resin is pressure-fed to the gun nozzle 3 via a hose. The gear pump pumps out the molten resin in proportion to the number of rotations of the transfer roller 2 by an SCR (rotation control device). The gun nozzle 3 connected to the hot melt applicator by a hose is located above the transfer roller 2
The nozzles are fixed to the machine frame of the transfer roller 2 so as to have a one-to-one correspondence with the center of each annular molding groove 1 on the rotary shaft of, and are fed under pressure to the annular molding groove 1 corresponding to each nozzle 4. The molten resin coming in is discharged from the closest position or a position slightly intruding. Each nozzle 4 has a base portion configured to allow a screw device as shown in the figure, and a stepped hole 5 through which resin is passed on the center line
Is opened and the tip is tapered and tapered.
The outer diameter D of the discharge port end at the tip of each nozzle 4 is larger than the discharge hole diameter d of the stepped hole 5 and smaller than the groove width W of the outer peripheral portion of the molding groove 1. More specifically, the outer diameter D is 0.9W
It is set according to the groove width W so as to have a relationship of>D> 0.3W. The diameter d1 of the discharged resin when the resin is discharged is d
There is a relationship of <d1 <D, and the resin discharged from the discharge hole diameter d expands and becomes large. Nozzle 4 in FIGS. 3 and 4
Has a cylindrical guide port 6 at the tip and is configured to discharge the resin from the position where it enters into the molding groove 1. The relationship between the above respective parts is that shown in FIG. 1 and FIG. Exactly the same.

The resin to be added to the hot melt applicator is
Examples thereof include hot-melt type ethylene vinyl acetate having strong adhesiveness, APP (regenerated waste from polypropylene production), and the like.

Then, the transfer base paper held on the unreel is pulled by the rotation of the transfer roller 2 and is brought into close contact with the transfer portion of the transfer roller 2 in a state where it is wound around the transfer portion without any deviation or slack. Each nozzle 4 is provided in each molding groove 1 of the transfer roller 2.
The transfer roller 2 in which the molten resin is continuously filled in a predetermined amount from the above, and the molding groove 1 is no longer in the groove shape by being filled with the molten resin
The transfer base paper is continuously brought into close contact with the outer periphery of the transfer base paper, and the resin ribs are continuously formed by transfer onto the transfer base paper.
The molten resin filled in the molding groove 1 is cured in parallel with the transfer to the transfer base paper, becomes a resin rib having the same cross-sectional shape as the molding groove 1, and is fixed on one side of the transfer base paper, and the spacer plate is formed. can get.

The feature of this spacing plate manufacturing apparatus lies in the nozzle 4. That is,
Since the outer diameter D of the discharge port end at the tip of the nozzle 4 is smaller than the groove width W of the outer peripheral portion of the molding groove 1, when filling the molding groove 1 with resin,
Since the resin is not hermetically sealed and is open to the atmosphere, air is not entrained, air bubbles are hardly formed in the filled resin, and the resin is supplied in a volume matching the molding groove 1. Therefore, the occurrence of burr is reduced,
The resin rib can be continuously molded at high speed. First
In the nozzle 4 shown in FIGS. 2 and 2, the tip is tapered and the outer diameter D of the discharge port end is made smaller than the groove width W of the outer peripheral portion of the molding groove 1. However, the tip shape is unworkable. There is an unstable element such that the discharge tends to be stable and the ejection direction shifts if the stepped hole 6 is misaligned. On the other hand, in the nozzle 4 shown in FIG. 3 and FIG. 4, the instability element can be removed by attaching the circular guide port 6 to the tip, and the resin can be discharged at the position where it enters the molding groove 1. Can be performed, and stable filling of the resin becomes possible.

[Effects of the Invention] As is apparent from the description of the embodiments above, the spacing plate manufacturing apparatus of the present invention is provided with a plurality of annular molding grooves formed in the circumferential direction and having a predetermined cross-sectional shape on the outer circumference. The outer diameter of the tip of the nozzle that fills the molding groove of the transfer roller with the hot-melt type molten resin is made smaller than the groove width of the outer peripheral portion of the molding groove, and the tip of the nozzle is close to or slightly near the center of the molding groove. Since the resin is inserted into the molding groove, when the resin is filled into the molding groove, the resin does not become a sealed state but is opened to the atmosphere, so that air is not entrained and bubbles are hardly formed, and the capacity of the molding groove is reduced. Since the existing resin is supplied, the occurrence of burrs is reduced, and the resin rib can be continuously molded at high speed. Therefore, there is an effect that the interval plate having stable resin rib size and shape and quality can be manufactured at high speed.

[Brief description of drawings]

FIG. 1 is a front view showing a nozzle of a manufacturing apparatus as an embodiment of the present invention, FIG. 2 is an explanatory view showing the same resin discharge state, and FIG. 3 shows a nozzle of another embodiment of the present invention. A front view, FIG. 4 is an explanatory view showing a resin discharge state of the nozzle of FIG. 3, FIG. 5 is an explanatory view showing a relationship between a conventional nozzle and a molding groove, and FIG. 6 is a state during conventional resin rib molding. FIG. In the figure, 1 is a forming groove, 2 is a transfer roller, 3
Is a gun nozzle, 4 is a nozzle, 5 is a stepped hole, 6 is a guide port, D is the outer diameter of the discharge port end, and W is the groove width of the forming groove. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A hot-melt type molten resin is supplied by a nozzle to a molding groove of a transfer roller having a plurality of annular molding grooves formed in the circumferential direction and having a predetermined cross-sectional shape and provided on the outer circumference. In an apparatus for manufacturing a spacing plate in which a transfer base paper is sent to the outer peripheral surface of the transfer roller, and a double row of resin ribs is formed on one surface of the transfer base paper by transfer, the outer diameter of the tip of the nozzle is set to the shape of the forming groove. An apparatus for manufacturing a spacing plate, which is configured to be smaller than the groove width of the outer peripheral portion, and the tip of the nozzle is made to be close to or slightly in the center of the molding groove.