JP3861601B2 - Paste coating device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paste coating apparatus for applying and filling various pastes on a substrate forming a multilayer printed circuit board.
[0002]
[Prior art]
A conventional paste coating apparatus for a substrate has a configuration as shown in, for example, the side view of the main configuration of FIG. That is, in FIG. 5, 1 is a substrate made of a resin material serving as a base material such as a multilayer printed board used in an electronic device, and 7 is an openable and closable member for holding the upper end portion of the substrate 1 and transporting it vertically or upward. The chuck 3 is longer in the longitudinal direction (axial direction passing through the center of the cylindrical circle) than the width of the substrate 1 and is rotatable in the direction of the arrow opposite to the moving direction of the substrate at a point close to the substrate. It is a pair of cylindrical coating rolls made of a metal material.
[0003]
Reference numeral 4 denotes a doctor roll (doctor) having a pair of cylindrical shapes made of a metal material, the dimension in the longitudinal direction of which is almost the same as that of the coating roll 3, and the movement is freely set relative to the coating roll 3. . The doctor roll 4 is provided with a notch in a part of the inside facing the substrate 1 which is the lower part of the outer circumference, and the gap between the outer circumference of the coating roll 3 and the tip of the notch is It is set and fixed so as to correspond to a predetermined thickness of the paste 2 such as a conductor material, a functional element forming material or an insulating material applied to the substrate 1.
[0004]
Reference numeral 5 denotes a pair of liquid dams made of a rectangular metal plate disposed on the outer circumference of the coating roll 3 in parallel with the longitudinal direction of the coating roll 3. 6 is a shape corresponding to the outer circumference of the coating roll 3 and the doctor roll 4 and the liquid dam 5, and the sides of the coating roll 3, the doctor roll 4 and the liquid dam 5 are brought into contact with the coating roll 3, the doctor roll 4 and the liquid dam 5. It is a pair of side dams arranged at both ends, and is installed in each of a pair of two liquid dams 5.
[0005]
A paste 2 to be applied to the substrate 1 is supplied and filled in a liquid reservoir constituted by a coating 3, a doctor roll 4, a liquid dam 5, and two opposing side dams 6.
[0006]
In applying the paste 2, while the coating roll 3 and the doctor roll 4 are in pairs, the substrate 1 held by the chuck 7 is transferred at a predetermined speed in the arrow direction (from bottom to top) in the vertical direction. At the same time, the pair of coating rolls 3 are rotated in the direction of the arrow (in the vicinity of the outer peripheral surface of the coating roll 3 close to the substrate 1, the direction of rotation opposite to the transfer direction of the substrate 1). The outer circumferential surface of the coating roll 3 is transferred by the rotation of the coating roll 3 in accordance with the thickness of the predetermined gap with 4 and adhered to both surfaces of the substrate 1.
[0007]
[Problems to be solved by the invention]
However, in the application of the paste 2 by the conventional paste coating apparatus, the paste 2 supplied and filled in the liquid reservoir from the gap between the side dam 6, the liquid dam 5 and the coating roll 3 is leaked, and is also applied to the coating roll 3 and the like. There was a problem that it was difficult to remove the adhered paste 2 and the workability was poor.
[0008]
The present invention is intended to solve the above-described problems, and an object of the present invention is to provide a paste coating apparatus that suppresses the leakage of paste to a coating roll and has good workability.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, a paste coating apparatus according to the present invention includes a coating roll that is rotationally driven to apply a paste transferred on an outer peripheral surface to a substrate that moves at a predetermined speed, and a coating roll that faces the coating roll. A doctor configured to set a gap having a predetermined thickness between the coating roll and an outer peripheral surface of the coating roll, and arranged to face the longitudinal direction of the coating roll, and is rotationally driven to apply the paste to the substrate. A liquid dam that prevents dripping of the paste in a direction opposite to a rotation direction of the coating roll; and the coating to form a liquid pool of the paste in a space facing the coating roll, the doctor, and the liquid dam. A roll is disposed opposite the doctor and the liquid dam, and in the longitudinal direction of the coating roll A paste coating device provided with a side dam of the pair to prevent the dripping of the paste, the side dams includes a front side plate inscribed in the doctor and the coating roll in the opposite inner space, the liquid dam consists of a rear side plate inscribed in said front side plate and the rear side plate, while being adjusted set coupled, the front side plate, and the lower front side plate inscribed in the coating roll, inscribed in the doctor The upper front side plate is divided into upper and lower parts, and the divided side dams are separately inscribed in the liquid dams or the coating rolls respectively, thereby preventing the paste from leaking from the liquid reservoir to the coating rolls.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention is disposed to face the coating roll, a coating roll that is rotationally driven to apply the paste transferred to the outer peripheral surface to a substrate that moves at a predetermined speed, and A doctor that sets a gap with a predetermined thickness between the coating roll and an outer peripheral surface of the coating roll; and a coating roll that is disposed opposite to the longitudinal direction of the coating roll and that rotates to apply the paste to the substrate. A liquid dam that prevents dripping of the paste in a direction opposite to the rotation direction; and the coating roll and the doctor to form a liquid pool of the paste in a space facing the coating roll, the doctor, and the liquid dam. And disposed opposite to the liquid dam, to prevent the paste from dripping in the longitudinal direction of the coating roll. A paste coating device provided with a side dams of a pair of stop, the side dams includes a front side plate inscribed in the doctor and the coating roll in the opposite inner space, and the rear side plate inscribed in the liquid dam The front side plate and the rear side plate are coupled so as to be adjustable, and the front side plate is divided into a lower front side plate inscribed in the coating roll and an upper front side plate inscribed in the doctor. It is a paste coating device divided into upper and lower parts, and even if the application thickness of paste on the substrate is controlled by changing the gap between the coating roll and doctor, the lower front side plate is used as the coating roll, and the upper front side plate is used as the doctor. That It is possible to inscribe separately, an effect that can prevent the paste leakage from the liquid reservoir.
[0015]
Hereinafter, a paste coating apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective exploded view of a main part configuration of a paste coating apparatus according to an embodiment of the present invention, FIG. 2 is a side view of the main part configuration, FIG. 3 is a plan view of a main part configuration of a liquid dam using the same squeegee, FIG. 4 is a plan view of a main part configuration of an upper and lower divided plate forming one side of the side plate.
[0016]
In addition, about the structural member demonstrated by the prior art, the same code | symbol is provided and detailed description is abbreviate | omitted.
[0017]
1, 2, and 3, 11 is a squeegee made of a rubber elastic body of urethane rubber with a knife-edge plate material at one end, 12 is a bottom plate made of a plate-like hard resin or metal material, and 13 is the same as the bottom plate 12. This is an upper plate, and the other end of the squeegee 11 is sandwiched and fixed together with the bottom plate 12 to constitute a liquid dam 14.
[0018]
Reference numeral 15 denotes a U-shaped holder made of a metal material provided with a fixing hole 15 a for constituting the side dam described above. The U-shaped holder is provided at the bottom of the liquid dam 14 having the bottom plate 12 and the upper plate 13. The portions are fitted so as to be slidable in the longitudinal direction of the plate-like bottom plate 12 and top plate 13, and are freely set and fixed to the liquid dam 14 by holding bolts 18.
[0019]
Reference numeral 16 denotes a rear side plate made of a polygonal metal material constituting a side dam, which is provided with circular or oval mounting holes 16a and 16b. The fixing bolt 19 is inserted into the mounting hole 16b and screwed into the fixing hole 15a. Thus, the holder 15 is set and fixed on one side.
[0020]
Reference numeral 17 denotes a front side plate constituting a side dam, which has a plurality of sides including two sides of the same arc as the outer circumferences of the coating roll 3 and the doctor roll 4, is made of a plate-like metal material, and is attached in a circular or oval shape A hole 17a is provided.
[0021]
Then, the fixing bolt 20 is inserted through the mounting hole 16a and the mounting hole 17a, and the fixing nut 21 is fastened, whereby the front side plate 17 is set and fixed to one side of the rear side plate 16. Thus, the side dam 24 corresponding to the liquid dam 14 is configured.
[0022]
3 denotes a pair of mounting bases made of a metal material, and the side dam 24 is set and fixed to the frame 23 of the main body made of the metal material.
[0023]
Next, the application | coating operation | movement of the paste 2 is demonstrated. First, the mounting base 22 is adjusted to set and fix the tip of the knife edge in the squeegee 11 so as to contact the outer circumference of the coating roll 3.
[0024]
Then, the rear side plate 16 and the front side plate 17 are adjusted and set by the fixing bolt 19, the fixing bolt 20 and the fixing nut 21, and are brought into contact with the outer circumference of the coating roll 3 and the doctor roll 4 and the liquid dam 14 without any gaps, In addition, a pair of side dams 24 having a volume capable of supplying and filling a predetermined amount of paste 2 is formed.
[0025]
Further, the pair of holders 15 is set by sliding with respect to the bottom end portion of the liquid dam 14 and fixed by the holding bolts 18 so that the paste 2 can be applied to the substrate 1 with a predetermined application width.
[0026]
Furthermore, the doctor roll 4 is moved and adjusted so that the gap between the vicinity of the tip of the notch and the outer circumference of the coating roll 3 is set corresponding to the film thickness of the paste 2 applied to the substrate 1.
[0027]
After performing the above adjustment settings, the paste 2 is supplied and filled in a liquid reservoir formed by the coating roll 3, the doctor roll 4, the liquid dam 14 and the side dam 24, and the coating roll 3 is coated near the substrate 1. In the vicinity of the outer peripheral surface of the roll 3, the substrate 1 is rotated in the rotation direction (arrow direction) opposite to the transfer direction of the substrate 1, and the substrate 1 is sandwiched by the chuck 7 in synchronization with the rotation and moved in the vertical direction (arrow direction). As a result, the paste 2 is applied to a predetermined portion of the substrate 1 with a predetermined width.
[0028]
If the paste 2 is supplied and filled only in one side of the substrate 1 or the liquid structure on one side of the substrate 1 with respect to the pair of coating rolls 3 and the like, only the one side of the substrate 1 is provided. Paste 2 can be applied. Furthermore, although the movement of the substrate 1 and the rotation of the coating roll 3 are driven in synchronization, the type of the paste 2, the shape of the substrate 1, the coating film thickness of the paste 2, and the application status of the paste 2 are changed. In order to cope with this, the moving mechanisms of the coating roll 3 and the substrate 1 may be independent mechanisms.
[0029]
Furthermore, when the gap between the coating roll 3 and the coating film thickness of the paste 2 is changed by the vertical movement of the doctor roll 4, it corresponds to the outer circumference of the coating roll 3 and the doctor roll 4 in the changed state. The front side plate 17 having an arc can be replaced to prevent paste leakage corresponding to each film thickness.
[0030]
In contrast, as shown in FIG. 4, the front side plate 17 is slidably movable in the longitudinal direction of the coating roll 3, and a divided lower plate 17 b having an arc side corresponding to the outer circumference of the coating roll 3; Similarly, the structure may be divided into divided upper plates 17c having arc sides corresponding to the outer circumference of the doctor roll 4.
[0031]
Then, in accordance with the change in the gap, the division lower plate 17b and the division upper plate 17c are adjusted and set to contact the coating roll 3 or the doctor roll 4 with no gap, and fixed on the division upper plate 17c. A side dam may be configured by fixing to the liquid dam 14 side with a fixing bolt (not shown) using a fixing hole 17e (not shown) provided in the hole 17d or the divided lower plate 17b.
[0032]
【The invention's effect】
As described above, according to the paste coating apparatus of the present invention, the lower front side plate can be reliably inscribed to the coating roll, and the upper front side plate can be reliably inscribed to the doctor roll. There is an effect that it is possible to suppress the leakage and adhesion of unnecessary paste.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a main part configuration of a paste coating apparatus according to an embodiment of the present invention. FIG. 2 is a side view of the main part configuration. FIG. 3 is a plan view of a main part configuration of a liquid dam using the squeegee. FIG. 4 is a plan view of a main part configuration of an upper and lower divided plate forming one side of the side plate. FIG. 5 is a side view of a main part configuration of a conventional paste coating apparatus.
1 substrate 2 paste 3 coating roll 4 doctor roll (doctor)
5 Liquid dam 6 Side dam 7 Chuck 11 Squeegee (rubber elastic body)
12 Bottom plate 13 Upper plate 14 Liquid dam 15 Holder 15a Fixing hole 16 Rear side plate 16a Mounting hole 16b Mounting hole 17 Front side plate 17a Mounting hole 17b Split lower plate 17c Split upper plate 17d Fixing hole 17e Fixing hole 18 Holding bolt 19 Fixing bolt 20 Fixing bolt 21 Fixing nut 22 Mounting base 23 Frame 24 Side dam

Claims (1)

A coating roll that is rotationally driven to apply the paste transferred to the outer peripheral surface to a substrate moving at a predetermined speed, and a predetermined thickness between the coating roll and the outer peripheral surface of the coating roll. And a liquid for the paste in a direction opposite to the rotation direction of the coating roll which is arranged to face the longitudinal direction of the coating roll and is driven to rotate to apply the paste on the substrate. A liquid dam for preventing dripping, and the coating roll, the doctor, and the liquid dam are disposed to face the coating roll, the doctor, and the liquid dam so as to form a liquid pool of the paste in a facing space between the coating roll, the doctor, and the liquid dam, and a side dam of the pair to prevent the dripping of the paste in the longitudinal direction of the coating roll A paste coating apparatus, the side dams, the front side plate inscribed in the doctor and the coating roll in the opposing space, consists of a rear side plate inscribed in the liquid dam, the front side plate and the rear side plate , together with the adjusted set coupled, the front side plate, and the lower front side plate inscribed in the coating roll, the upper and lower split paste coating device on the front side plate inscribed in the doctor.

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