JPH0852855A - Screen frame - Google Patents

Abstract

PURPOSE:To provide a screen frame, which is easy for attachment and removal of a screen gauze and suitable for reutilization. CONSTITUTION:Inner grooves 5 and outer grooves 6 are provided in the longitudinal directions, respectively, at vertical frame posts 2 and 2 and lateral frame posts 3 and 3, which form the rectangular frame body. Inner fixing rods and outer fixing rods are inserted into the individual grooves 5 and 6, and a screen gauze is fixed. The vertical frame posts 2 and 2 and the lateral frame posts 3 and 3 are coupled with corner members 13 respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen frame for covering a screen gauze used for screen printing.

[0002]

2. Description of the Related Art A conventional screen frame is shown in FIG.
As shown in (a), four hollow aluminum materials 101
Are welded at the joint 102 that is obliquely cut. In this screen frame 100, a screen gauze 104 is adhered to the adhesive part 103, which is a ridge, by an adhesive 105 as shown in FIG. 7B, and the screen gauze 104 is stretched.

[0003]

However, because of this adhesion, the screen gauze 104 must be maintained in a state of being stretched by a not-illustrated spreading means until the adhesive material 105 dries, which is troublesome. In addition, the adhesive portion 103 must be roughened in order to improve the adhesiveness.

After the screen printing by the stretched screen gauze 104 is completed, the screen gauze 104 is stripped from the screen frame 101 for reuse of the screen frame 101, and the adhesive 105 is removed. However, since the adhesive agent 105 has a strong adhesive force and firmly adheres to the adhesive portion 103, the adhesive agent 105 cannot be removed unless it is scraped off by a cutter or simmered in hot water for a long time. This kind of operation is troublesome,
The surface of the screen frame 101 is scratched or the screen frame 1
01 is distorted, and the reusability of the screen frame 101 is reduced.

Furthermore, when the screen frame 101 is reused for screen printing of different sizes, each hollow aluminum material 101 must be cut and welded again.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a screen frame in which the screen mesh can be easily attached and detached. Another object of the present invention is to provide a screen frame that can be easily reused.

[0007]

As a result of intensive studies, the present inventor has found that the screen gauze is not fixed to the screen frame with an adhesive but is fixed to the screen frame by pushing the screen gauze into a groove with a rod. It was found that the above-mentioned objects can be achieved by doing so, and the present invention has been completed.

That is, according to the present invention, in order to stretch the screen gauze, two vertical frame pillars and two horizontal frame pillars are joined at their ends to form a rectangular frame body. The vertical frame pillars and the horizontal frame pillars are provided with grooves extending in the length direction of the vertical frame pillars and the horizontal frame pillars on the surface on the side where the gauze is stretched, and the cross-sectional shape of the grooves has a narrow entrance. A screen characterized in that the inside is wider than the entrance and has an elastic rod-like body having a diameter equal to or larger than the width of the entrance of the groove and capable of being pushed into the groove. It is about the frame.

[0009]

In the screen frame of the present invention, the end portion of the screen gauze to be stretched is pushed into the groove by the elastic rod-shaped body. The diameter of this elastic rod is equal to or larger than the width of the entrance of the groove, and the cross-sectional shape of the groove is such that the entrance is narrow and the inside is wider than the entrance. When the elastic rod is pushed into the groove by the elastic rod, the elastic rod is fixed in the groove and the screen gauze is also fixed. Since the groove is provided in each of the vertical frame column and the horizontal frame column that form the screen frame, the screen gauze is stretched over the screen frame.

Since the operation of pushing the elastic rod into the groove is a simple operation and can be easily performed mechanically or manually by a person, the tensioning of the screen gauze does not take much effort. Also, after screen printing, the screen gauze can be easily removed from the screen frame by pulling out the elastic rod-shaped body from the groove, and this screen frame can be reused to stretch another screen gauze without problems of distortion and scratches. can do.

If two or more grooves for pushing in the screen gauze are provided for each of the two vertical frame pillars and the two horizontal frame pillars, the force for fixing the screen gauze becomes large, so that the screen gauze is fixed. It can be stretched with more force and fixed to the screen frame.

Further, in the screen frame of the present invention, the two vertical frame pillars and the two horizontal frame pillars are respectively joined at their ends by four removable corner members to form a rectangular frame body. By doing so, by removing the corner member, the screen frame can be disassembled into vertical frame columns and horizontal frame columns, and by combining them with frame columns of other similar structures, screen frames of different sizes can be obtained. Easy to assemble.

Further, in such a disassembled screen frame, the corners of the rectangular frame body are formed by obliquely cutting the ends of the vertical frame pillars and the ends of the horizontal frame pillars and joining the cut surfaces. Section is formed, and the corner member is a member in which two branches are combined in an L shape, and each branch of the corner member is formed on each of the cut surfaces of the vertical frame pillar and the horizontal frame pillar. The vertical frame pillar and the horizontal frame pillar are joined by the corner member so that the end portions of the vertical frame pillar and the end portions of the horizontal frame pillar are inserted so that the corner members are hidden by the respective insertion holes provided. If they are joined together, the screen frame can be easily disassembled and assembled.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the screen frame according to the present invention will be described with reference to the drawings.

FIG. 1 is a plan view for explaining a screen frame 1 according to an embodiment of the present invention. The screen frame 1 includes two vertical frame columns 2 and 2 and two horizontal frame columns 3 and 3 forming a rectangular frame body. The vertical frame columns 2 and 2 and the horizontal frame columns 3 and 3 are usually made of a metal material such as aluminum or iron, but may be made of a resin having high strength.
The vertical frame columns 2 and 2 and the horizontal frame columns 3 and 3 are joined together at a joint 4 formed by obliquely cutting the ends.

An inner groove 5 and an outer groove 6 are provided on the upper surfaces of the vertical frame columns 2 and 2 and the horizontal frame columns 3 and 3 in parallel to the respective lengthwise directions. Each inner groove 5 and each outer groove 6 are connected to each other at the joint portion 4 to form a ring.

A sectional view taken along the line AA of FIG. 1 is shown in FIG. 2 to show the sectional shapes of the inner groove 5 and the outer groove 6. As can be seen from FIG. 2A, the inner groove 5 and the outer groove 6 are provided in the inclined thick portion 7 which is provided on one side of the vertical frame column 2 (inside the screen frame 1) with a bias. . The cross-sectional shape of the inner groove 5 and the outer groove 6 is an octopus-vessel shape with a narrow entrance and a wide inside. The cylindrical inner fixing rod 8 and outer cylindrical fixing rod 9 are respectively pushed into the inner groove 5 and the outer groove 6 having such a cross-sectional shape. The diameters of the inner fixing rod 8 and the outer fixing rod 9 are slightly larger than the widths of the entrances of the inner groove 5 and the outer groove 6, but the inner fixing rod 8,
Since the outer fixing rod 9 is made of an elastic material such as rubber or resin, it can be pushed in. The vertical frame column 2 is a hollow body having a cavity 10.

In the structure shown in FIG. 2 (a), the screen gauze 11 is formed by the inner fixing rod 8 and the outer fixing rod 9 as shown in FIG. 2 (b).
It is pushed into the outer groove 6. Actually, the screen gauze 11
The inner fixing rod 8 and the outer fixing rod 9 are pushed into the inner groove 5 and the outer groove 6 mechanically or manually by a person with tension applied to the inner fixing rod 8, but the tension applying means is not shown. Since the screen gauze 11 is pushed and fixed in the two grooves in this way, the screen gauze 11 will not be displaced even if a large tension is applied to the screen gauze 11.

The structure for fixing the screen gauze 11 is not limited to the structure shown in FIG. 2, but the groove 5 as shown in FIG. 3 (a).
May have a structure in which only one groove is provided in the thick portion 7, or a structure in which two grooves 5 and 6 are provided on a flat surface without providing the thick portion as shown in FIG. 3B. However, in order to make it difficult for the screen gauze 11 to come off, as shown in FIGS. 2 and 3 (a), the entrance of the groove is in a direction opposite to the tension applied to the screen gauze 11, that is, in the outer side direction of the screen frame 1. It is preferable that it is suitable.

The length and shape of the fixing rod are not particularly limited, and may be an elongated cylindrical rod having the same length as the straight portions of the inner groove 5 and the outer groove 6, or FIG. 4 (a). As shown in Fig. 4, an L-shaped one with continuous corners may be used, or as shown in Fig. 4 (b), all of them are connected to form a rectangular shape. It may be. Further, for convenience of removal, a knob 12 may be partially provided as shown in FIG. 3 (b).

Further, the screen frame 1 shown in FIG.
In, the diagonally cut ends of the vertical frame columns 2 and 2 and the horizontal frame columns 3 and 3 are joined by the corner members 13, 13, 13 and 13 indicated by broken lines to form the joint part 4,
4, 4, 4 are formed. FIG. 5 is a perspective view and FIG. 6 is a plan view showing a state where the corner member 13 is pulled out.

The corner member 13 is an L-shaped member as shown in FIG. 5, and is made of a resin such as vinyl chloride or a casting. Then, one branch portion 14 of the corner member 13 is inserted into the cavities 10 and 10 ′ of the horizontal frame body 3, and the other hitting portion 15 is inserted into the cavity 10 of the vertical frame body 2 and is completely inserted. As shown in FIG. 1, the corner member 13 is hidden by the vertical frame column 2 and the horizontal frame column 3.
It should be noted that, as shown in FIG. 1, it is desirable to apply an adhesive to the joint portion 4 so that water or the like does not enter the insertion portion after the insertion portion is completely inserted.

Also, the corner member 1 shown in FIG.
The angle θ formed by the branch portions 14 and 15 of 3 is preferably 90 to 93 °. If θ is larger than 90 °, the screen frame 1 will have a shape in which the center of each side swells outward if no measures are taken, but when the screen gauze 11 is stretched, for example, the horizontal frames facing each other. The central portions of the columns 3 and 3 are drawn together by a turnbuckle, etc.
When the turnbuckle is removed after fixing the
The tension of 1 and the strain stresses of the columns 3 and 3 are balanced and θ
Is about 90 °.

[0024]

EFFECTS OF THE INVENTION According to the screen frame of the present invention, it is easy to spread the screen gauze and the used screen gauze can be easily removed. Therefore, this screen frame can be reused without problems in order to stretch another screen gauze. The groove for pushing in the screen gauze is vertical,
If two or more horizontal frame pillars are provided, the screen gauze can be more firmly fixed to the screen frame.

Further, in the screen frame of the present invention, the two vertical frame pillars and the two horizontal frame pillars are respectively joined at their ends by four removable corner members to form a rectangular frame body. By doing so, by removing the corner member, the screen frame can be disassembled into vertical frame columns and horizontal frame columns, and by combining them with frame columns of other similar structures, screen frames of different sizes can be obtained. Easy to assemble.

[Brief description of drawings]

FIG. 1 is a plan view showing a screen frame according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view showing a cross-sectional shape of another mode different from that in FIG.

FIG. 4 is a plan view showing the shape of a fixing rod.

FIG. 5 is a perspective view showing a state in which a corner member is pulled out.

FIG. 6 is a plan view showing a state in which a corner member is pulled out.

FIG. 7 is a diagram showing a conventional method for tensioning a screen gauze.

[Explanation of symbols]

 1 Screen Frame 2 Vertical Frame Column 3 Horizontal Frame Column 5 Inner Groove 6 Outer Groove 8 Inner Fixing Rod 9 Outer Fixing Rod 10, 10 'Cavity 11 Screen Mesh 13 Corner Member 14, 15 Branch

Claims (4)

[Claims] 1. A screen frame in which two vertical frame columns and two horizontal frame columns are connected at their ends to form a rectangular frame for tensioning the screen mesh, Each of the vertical frame pillars and the horizontal frame pillars is provided with a groove extending in the length direction of the vertical frame pillar and the horizontal frame pillar on the surface on the side where the gauze is stretched. A screen frame characterized by having an elastic rod-like body having a diameter equal to or larger than the width of the entrance of the groove and capable of being pushed into the groove. 2. The screen frame according to claim 1, wherein two or more grooves extending in the longitudinal direction of the vertical frame column and the horizontal frame column are provided in each of the vertical frame column and the horizontal frame column. . 3. A rectangular frame body is formed by connecting the two vertical frame pillars and the two horizontal frame pillars at respective end portions by four removable corner members. The screen frame according to 1 or 2. 4. The corner member of the rectangular frame body is formed by diagonally cutting the end portion of the vertical frame pillar and the end portion of the horizontal frame pillar and joining the cut surfaces together, and the corner member. Is a member in which two branch portions are combined in an L shape, and each of the branch portions of the corner member is inserted into an insertion hole provided in each of the cut surfaces of the vertical frame pillar and the horizontal frame pillar, and the corner thereof is formed. The vertical frame pillar and the horizontal frame pillar are joined by the corner member by aligning the ends of the vertical frame pillar and the ends of the horizontal frame pillar so that the members are hidden. The screen frame described in 3.