JPH01249451A - Gauze frame used for screen printing - Google Patents

Abstract

PURPOSE:To prevent a gauze from being cut due to the pressure contact of the gauze with corners of end parts of frame rods, by a method wherein, even if a large tension is applied to the gauze by the rotation of the frame rods in tension applying directions, the vicinity of the both ends of the frame rods is prevented from the large tension. CONSTITUTION:An opposed distance K between the edges on the side where the upper open parts of grooves 36 of frame rods 18, 22 or 20, 24 opposed in parallel face each other is reduced in the vicinity of the both ends of the frame rods. The rotatable frame rods are rotated to dispose the grooves 36 close to the opposed frame rods. Then, the vicinity of the edge parts of a gauze is disposed on the grooves 36 in tension- free states, a gauze presser plate 38 is nested into the grooves 36, and the gauze is fastened to the grooves 36 of the respective frame rods. The parts provided with grooves 36 are separated from the frame rods opposed thereto in parallel by rotating the rotatable frame rods, whereby the gauze is applied with tension to be set flat on a space part surrounded by the frame rods. At this time, because the tension of the gauze in the vicinity of the both ends of the grooves 36 is smaller than that in the other parts, the gauze cannot be cut even with the application of tension to the gauze.

Description

[Detailed description of the invention] C Industrial application field] The present invention relates to a gauze frame used for screen printing.

[Conventional technology]

Conventionally, the gauze frame used for this type of screen printing has grooves along the longitudinal direction in the frame rod that is its component, the edge of the gauze is placed in this groove, and a gauze holding plate is placed over the gauze. The edge of the gauze is fitted into the groove and locked in the groove of the frame rod, and in this locked state, the frame rod is rotated relative to the connecting fitting to apply tension to the gauze and rotate it to a predetermined rotation. The frame rod is removably fixed to the connecting fittings at an angle.

[Problem that the invention seeks to solve]

As mentioned above, when tension is applied to the gauze that is locked in the groove of the frame rod, the gauze comes into strong pressure contact with the corner of the longitudinal end of the groove, and this corner may cause the gauze to break. It existed.

The present invention aims to eliminate the above defects.

[Means to solve problems]

In order to achieve the above object, the present invention uses four frame rods 18.2.
0, 22, and 24 are provided with grooves 36 over the entire length in the longitudinal direction, and the gauze presser plate 3 can be fitted into the grooves 36 and locked therein.
8, and each end of the four frame rods 18.20, 22.24 is attached to the connecting fittings 2,4°6.8 to form the overall connection shape of the four frame rods 18, 20, 22.24. is formed into a parallelogram, and at least one of the frame rods 18, 20, 22, 24, which are opposed in parallel, is centered on an axis parallel to the longitudinal direction and distant from the groove 36, Connecting fittings 2°4.6.8 attached to both ends of each frame rod are rotatable, and each rotatable frame rod is attached to both ends of each frame rod at a predetermined rotation angle. In a device that can be removably fixed to a connecting fitting, the opposing distance between the edges of the upper openings of the grooves 36 of the frame rods facing each other in parallel to each other is set in the vicinity of both ends of the frame rods. ,
It has been reduced.

[Effect]

The rotatable frame rod is rotated to bring its groove 36 close to the parallel opposing frame rod.

In this state, each frame rod 18, 20.2 is attached near the edge of the gauze.
The gauze is placed on the grooves 36 of frames 2 and 24 in a non-tensioned state, and the gauze pressing plate 38 is fitted into the grooves 36 from above the gauze, and the gauze is engaged with the grooves 36 of each frame rod 18, 20, 22°24. make it stop After that, rotate the rotatable frame rod to open the groove 3.
When the 6-forming portion is separated from the parallel frame rods, tension is applied to the gauze, and the gauze is stretched flat in a space surrounded by the frame rods under tension. At this time, near both ends of the groove 36, the tension of the gauze is weak compared to other parts, and the gauze does not come into strong pressure contact with the corner of the upper opening edge of the groove 36. The gauze will not break even if tension is applied to it.

〔Example〕

The structure of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

2.4 and 6.8 are connecting fittings, each of which has a flat plate part a, a rising part s, b', and a rising part s, b'.
are opposed to each other with an angular difference of 90 degrees. A tube body insertion hole 10.16 and a bolt insertion hole 12.14 are transparently provided in the rising portions S and b'. The insertion hole 10
．． A tube 17 is press-fitted into the tube 16, and a stopper pin 46 having a tapered tip is slidably fitted into the tube 17. An elongated hole is provided in the tubular body 17 in the axial direction, and an operating shaft 47 that projects perpendicularly to the stopper pin 46 is slidably disposed in the elongated hole. The elongated hole defines a movement range of the stopper pin 46 along the tube body 17. 18, 20, 22, 2
4 is a long frame rod, which has a square cross section;
Moreover, a space 26 is formed in the longitudinal direction. A recess 27 having a curved surface is formed over the entire length in the longitudinal direction at the inner corner of each bottom of the frame rod 18°20.22.24. A mounting block 28 is inserted into the space 26 near both ends of the frame rods 18, 20, 22, 24, and each block 28 is attached to the frame body 18, 20 by a screw.
, 22, 24. Said frame rod 18
, 20, 22, and 24, a cylindrical protrusion 30 protrudes from one side of each block 28 at both ends thereof and is located coaxially therewith.

Each block 28 at both ends of the frame rods 18, 20, 22, 24 has a hole 32 for a stopper pin at a predetermined interval.
A screw hole 34 for a bolt is bored, and the screw hole 34 opens at the end face of the projection 30, and the hole 32 is formed in the frame rod 18,
Both end faces of 20, 22, and 24 are open. Said frame rod 1
8, 20, 22.degree. 24 are provided with wide-bottomed grooves, ie, T-grooves 36, extending over the entire length in the longitudinal direction. , 38
is a gauze holding plate having the same length as the frame rods 18, 20, 22, and 24, and is formed in a cross-sectional shape that can be inserted into the groove 36, and has tapered portions at both ends. The connecting fittings 2, 4
, 6.8 is provided with a hole 40 on the outer surface side of the rising portion 1, b', into which the projection 30 is rotatably inserted. Each groove 36 of the frame rod 18°20.22.24
As shown in FIG. 6, inclined surfaces T are formed near both ends of the inner edge of the upper opening. This inclined surface T allows the frame rods 18.
The opposing distance K of the edges of the upper openings of the grooves 36 of the grooves 20, 22, and 24 on the sides facing each other is set to the frame rod 18°20.22.24.
is reduced near both ends of the frame rods 18, 20, 22 in the gauze-stretched state described later.
, 24 are provided with tension relief portions near both ends thereof. On both sides of the edge of the upper opening of the groove 36 of each of the frame rods 18.20, 22.24, when inserting the gauze pressing plate 38 into the groove 36, gauze 44 is attached to the edge of the upper opening. Chamfered portions R are formed to prevent the gauze 44 from being cut when pressed against both corners.

Next, the operation of this embodiment will be explained.

First, when assembling the gauze frame 1, attach the four connecting fittings 2.
, 4, 6.8, two frame rods 18°22 of the same length, and two frame rods 20, 24 of the same length, a total of four frame rods are prepared, and each frame rod 18, 20, 22. Connect the protrusion 30 of 24 with the connecting fittings 2, 4
, 6.8, and connect the above-mentioned elements so that the overall shape becomes a parallelogram. At this time, the frame rods 18, 20, 22. ．． Set the vertical direction of 24. In addition, the stopper pin 46 is connected to the connecting fitting 2.
, 4, 6.8. Next, bolt insertion holes 12, 14 near the center of each connecting fitting 2, 4, 6.8
Insert the bolts 42, 42 into the threaded holes 34 of the frame rod 18, 20° 22.24.
20, 22, 24 are loosely screwed in to the extent that they can rotate relative to the connecting fittings 2, 4, 6.8 on both ends, and the frame rod 18° 2
0.22 and 24 are temporarily attached to the connecting fittings 2, 4, 6, and 8. This completes the assembly of the gauze frame 1. When the gauze frame is placed on the placement surface, the lower surfaces of the connecting fittings 2.4, 6.8 are placed on the placement surface, and the frame rods 18, 20, 22,
The lower surface of 24 also contacts the mounting surface horizontally. In this state, the hole 32 on the frame rod side faces the opening of the tube body 17.

Next, the operation of pasting the gauze 44 on the gauze frame l with a predetermined tension will be described.

First, a gauze 44 that is slightly larger than the overall shape of the gauze frame 1 is placed on the gauze frame 1 as shown in FIG. Each frame rod 18, 20° 22.24 is placed on the groove 36 in a raised state as the center. In this state, frame rods 1.8, 20, 22, 2
4 does not collide with the mounting surface due to the recess 27.

Next, as shown in FIG. 2, the gauze pressing plate 38 is inserted into the groove 36 from the end direction of the gauze 36 over the entire length of the groove 36, with the gauze 44 near the edge being inserted into the groove 36. Insert the gauze 44 in the longitudinal direction and connect the gauze 44 near the edge to the wall surface of the groove 36 and the gauze presser plate 3.
Insert it between the bottom surface of 8. In this way, with the part near the edge of the gauze 44 locked in the groove 36 of the frame rods 18, 20, 22.24, use a tool to push down the frame rod 18°20122.24 around the rotating part. Then, a large tension is generated in the gauze 44, and the gauze 44 is placed in the gauze frame 1 with appropriate tension.
can be pasted on. When this frame rod is pressed down, the frame rod 18.
The bottoms of 20, 22, and 24 do not collide with the mounting surface due to the presence of the recess 27. Next, slide the stopper pin 46 in the protruding direction and press down the frame rods 18, 20, 2.
2. Insert into hole 32 of 24, frame rod 18, 20, 22.2
4 to the connecting fitting 2°4.6.8. Next, bolt 42 is tightly screwed into threaded hole 34. In the above-mentioned gauze-stretched state, due to the presence of the inclined surface T of the groove 36, the frame rod 18°2
The tension of the gauze 44 is weakened near the corners of both ends of Q, 22.24, and the gauze 44 does not come into pressure contact with the corners.

When disassembling the gauze frame 1, insert the stopper pin 46 into the hole 3.
2, warm the bolt 42, and attach the frame rod 18.
, 20, 22, and 24 are raised around the rotating part to release the tension of the gauze 44. Next, the gauze pressing plate 38 is pulled out from the groove 36, and the gauze 44 is removed from the gauze frame 1.

Next, by removing the bolts 42 from the screw holes 34 of the frame rods 18, 20, 22, 24, the four frame rods 18, 20, 22, 24
The connection by the continuous fittings 2, 4, 6.8 is released.

In carrying out the present invention, the locking mechanism for locking the gauze is not particularly limited to the wide-bottomed groove 36 and the elongated gauze holding plate 38. Further, even if the frame rods 18, 20° 22.24 are not all rotatable, only one of the frame rods facing in parallel is rotatable, and the other frame rod is connected to the connecting metal fittings 2, 4. , 6.8 may be fixed or integrated. Note that when a pattern formed with ink on a release paper is pressed onto a cloth to transfer the pattern to the cloth, if the cloth is distorted or wrinkled, the pattern cannot be accurately transferred to the cloth. However, if the structure of the present invention is used to stretch the cloth around the frame rod with a predetermined tension and transfer the pattern to the cloth, the pattern can be accurately transferred to the cloth. The present invention can also be used for this transfer. In this case, the cloth is held between the wall surface of the groove 36 and the gauze presser plate 38, but if the cloth is thick, the dimensions of the presser plate 38 are set appropriately depending on the thickness of the cloth. Furthermore, the present invention can be used as a gauze-stretching machine in addition to the above-mentioned cloth-stretching frame.

〔"effect〕

As described above, even if the frame rod is rotated in the tension applying direction and a large tension is applied to the gauze, the tension of the gauze is not applied to the vicinity of both ends of the frame rod. This has the effect of preventing the gauze from being cut due to pressure contact with the corners of the ends.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the main part, Fig. 2 is a side view of the main part, Fig. 3 is a sectional view, Fig. 4 is an external view, Fig. 5 is a plan view, Fig. 6 is a plan view, and Fig. 7 is a plan view of the main part. The figure is a plan view, FIG. 8 is a plan view, and FIG. 9 is a side view. 1... Gauze frame, 2, 4, 6.8... Connecting metal fittings. 10.12,14,16...Bolt insertion hole, 1
8. 20, 22, 24... Frame rod, 26... Space, 28... Mounting block, 27...
・Dent, 30...protrusion, 32...hole,
34...Screw hole, 36...Groove, 38...
- Gauze presser board. 40...hole, 42...bolt, 44...
・Gas 44・・・Stopper pin patent applicant Matsushita Kogei Co., Ltd.
Patent attorney representing Muto Kogyo Co., Ltd.
Ayao NishijimaFigure 1Figure 2Figure 3Figure 5

Claims (1)

[Claims] (1) A groove 36 is formed in each of the four frame rods 18, 20, 22, and 24 over the entire length in the longitudinal direction, and a gauze presser plate 38 is provided so as to be able to be fitted and locked into the groove 36, and the four frame rods are frame rod 1
8, 20, 22, 24 with connecting fittings 2, 4, 6, 8
The overall shape of the connection of the four frame rods 18, 20, 22, 24 is made into a parallelogram, and each of the frame rods 18, 20
. The rotatable frame rods 18, 20, 2 are rotatable relative to the connecting fittings 2, 4, 6, 8.
2, 24 at a predetermined rotation angle to each frame rod 18, 20, 22.
, 24, connecting fittings 2, 4, 6, 8 attached to both ends of the
In a device that can be detachably fixed to a frame rod, the distance between the opposing edges of the upper openings of the grooves 36 of the frame rods facing each other in parallel to each other is reduced in the vicinity of both ends of the frame rods. A gauze frame used for screen printing that is characterized by its texture.