KR102562472B1 - Reusable detachable sub-frame assemble of stencil mask - Google Patents

Abstract

In one embodiment of the present invention, a first lower plate fastening hole for coupling with a metal plate is formed, a lower plate covering each of the side surfaces of the metal plate, and an upper plate fastening hole for coupling with the metal plate together with the first lower plate fastening hole. is formed, and an upper plate for attaching and detaching the metal plate as it rotates in combination with the lower plate, and is located at a corner of the lower plate covering each of the side surfaces of the metal plate, and forms a connector fastening hole for coupling with the lower plate. It provides a detachable subframe assembly of a reusable stencil mask, characterized in that it comprises a connector to do.

Description

REUSABLE DETACHABLE SUB-FRAME ASSEMBLE OF STENCIL MASK }

The present invention relates to a detachable subframe assembly, and more particularly, to a detachable subframe assembly capable of reusing a stencil mask.

Printed electronics technology is used in various industrial fields including electric devices, electronic components, solar cells, semiconductors, and displays, and stencil masks are widely used in these printed electronics processes.

1 is a view showing a general stencil mask conventionally used.

Such a stencil mask is manufactured by a strapping process in which the metal plate 15 is attached to the aluminum frame 11 using adhesive and tape 13, and this strapping process is performed manually. The strapping process is a labor- and time-consuming operation, and considerable costs are incurred, accounting for 5 to 7% of the total production cost of sales. Therefore, in order to reduce the overall production cost, a method for reducing the cost of straps is required.

On the other hand, since the conventional aluminum frame to which the metal plate 15 is attached is bulky and heavy, it is difficult to store and transport the stencil mask.

In addition, the adhesive bonding the metal plate 15 and the frame 11 is dissolved by a deburring operation such as acid treatment of a stencil mask or an electrolytic polishing treatment, or a surrounding environment such as temperature and humidity, so that the metal plate 15 and the frame The adhesive part between (11) may be peeled off.

In addition, since the conventional stencil mask is fixed by attaching the metal plate 15 to the aluminum frame 11 with adhesive and tape, it is not easy to separate the metal plate 15 from the frame 11 even after electrode printing is completed. ) is difficult to reuse. These problems can lead to cost increases.

A technical problem to be achieved by the present invention is to provide a detachable subframe assembly capable of reducing production costs by simplifying the assembly of a metal plate and a subframe to reduce labor costs due to a strapping process and providing a reusable subframe assembly.

The technical problem to be achieved by the present invention is not limited to the above-mentioned technical problem, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

In order to achieve the above technical problem, in one embodiment of the present invention, a first lower plate fastening hole for coupling with the metal plate is formed, the lower plate covering each of the side surfaces of the metal plate, and the first lower plate fastening hole together with the An upper plate fastening hole for coupling with the metal plate is formed, and is positioned at a corner of an upper plate for attaching and detaching the metal plate as it is coupled to the lower plate and rotates, and a lower plate covering each of the side surfaces of the metal plate, and the lower plate and Provided is a detachable subframe assembly capable of reusing a stencil mask, characterized in that it includes a connector forming a connector fastening hole for coupling.

In an embodiment of the present invention, the lower plate further includes a second lower plate fastening hole for coupling with the connector by a bolt fastening method, and the aperture of the connector fastening hole is a long diameter of the aperture of the second lower plate fastening hole ( major axis).

In an embodiment of the present invention, the lower plate uses the second lower plate fastening hole formed larger than the cross-sectional area of the connector fastening hole before the metal plate is coupled, so that the connector fastening hole is an inner portion of the second lower plate fastening hole. The connector fastening hole is located at an outer portion of the second lower plate fastening hole by using the second lower plate fastening hole formed to be larger than the cross-sectional area of the connector fastening hole after the metal plate is coupled. It is possible to improve the tensile force between the metal plate and the lower plate as it is pulled inward to do so.

In an embodiment of the present invention, the second lower plate fastening hole may be formed in an elliptical shape.

In an embodiment of the present invention, the lower plate includes first to fourth lower plate units covering each of the side surfaces of the metal plate, and the lower plate is a separable type in which the first to fourth lower plate units are separated from each other, The first to fourth lower panel units may be connected to each other by connectors.

In an embodiment of the present invention, the upper plate and the lower plate may be coupled by being interdigitated with each other by a concave-convex structure.

In an embodiment of the present invention, the connector may include an upper connector plate positioned on an upper surface of the lower plate and a lower connector plate positioned on a lower surface of the lower plate.

In an embodiment of the present invention, a fastening member passing through the fastening hole of the metal plate, the upper plate fastening hole, and the first lower plate fastening hole may be further included, and the upper and lower plates may be bolted through the fastening member. there is.

According to an embodiment of the present invention, by providing a detachable subframe in which a metal plate can be easily attached or detached instead of a conventional disposable adhesive frame, production costs can be reduced through a simplified strapping process and reuse of the subframe.

In addition, according to an embodiment of the present invention, the metal plate can be stably fixed regardless of external environmental factors such as temperature or humidity by using a hinged subframe.

Further, according to an embodiment of the present invention, since the lower plate units of the separable subframe are fastened to each other with a high tensile force by a connector connecting the lower plate units, high electrode printing quality can be provided.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the description of the present invention or the configuration of the invention described in the claims.

1 is a view showing a general stencil mask conventionally used.
2 is a diagram schematically illustrating a lower plate of a subframe according to an embodiment of the present invention.
FIG. 3 is a view schematically illustrating a cut plane A1-A1' of FIG. 2 according to an embodiment of the present invention.
4 is a diagram schematically illustrating an upper plate of a subframe according to an embodiment of the present invention.
5 is a view schematically illustrating a cut plane A1-A1' of FIG. 3 according to an embodiment of the present invention.
6 is a diagram schematically illustrating a top plate of a connector according to an embodiment of the present invention.
7 is a diagram schematically illustrating a lower plate of a connector according to an embodiment of the present invention.
8 is a diagram schematically illustrating a detachable subframe assembly capable of reusing a stencil mask according to an embodiment of the present invention.
FIG. 9 is a view schematically illustrating a first cut plane A1-A1' of FIG. 8 according to an embodiment of the present invention.
FIG. 10 is a diagram schematically illustrating a second cut plane A2-A2' of FIG. 8 according to an embodiment of the present invention.
11 is a schematic diagram of a metal plate according to an embodiment of the present invention.
12 is a view schematically showing a portion of a subframe in which an upper plate and a lower plate are assembled according to another embodiment of the present invention.
13 is a view schematically illustrating a portion of a subframe assembly in which an upper plate, a lower plate, a connector, and a metal plate are assembled according to an embodiment of the present invention.
14 is a view schematically illustrating a portion of a subframe assembly in which an upper plate, a lower plate, a connector, and a metal plate are assembled according to another embodiment of the present invention.
15 is a view showing an assembled state of an upper plate, a lower plate, and a connector of a sub frame assembly according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and, therefore, is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, combined)" with another part, this is not only "directly connected", but also "indirectly connected" with another member in between. "Including cases where In addition, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a detachable subframe assembly of common electronic board materials, such as circuit boards, and stencil masks for use in screen printing of printing screen units. A stencil mask according to an embodiment of the present invention may include a main frame, sub frames 100 and 200 , a metal plate 300 , and a connector 400 .

The metal plate 300 according to an embodiment of the present invention is a metal plate used for PCB printing, and the sub frame 200 is combined with the metal plate 300 in a form surrounding each side of the metal plate 300 for screen printing, The main frame is a configuration for combining with the subframes 100 and 200 coupled with the metal plate 300 . In this way, the stencil mask in which the metal plate 300, the subframes 100 and 200, and the main frame are all combined is located at the printing position of the electrode printing equipment.

The main frame according to an embodiment of the present invention is also referred to as a holder frame or a master frame, and is a frame used to finally fix a stencil mask before electrode printing is performed. The main frame may be provided within the electrode printing equipment or may be provided separately. An aluminum profile can be used as the main frame, and it can be manufactured by a compression method, a casting method, or the like.

In the present invention, the subframe to which the metal foil is fixed has a structure in which an upper plate 200 and a lower plate 100 are combined. The upper and lower plates may be manufactured by milling, compression processing, injection processing, and the like, respectively. In addition, the subframe may be made of various materials such as metal, plastic, and synthetic resin.

In addition, the subframe according to the embodiment of the present invention may be composed of the lower plate 100 and the upper plate 200, and the metal plate 300 may be disposed between the lower plate 100 and the upper plate 200 and fixedly coupled. .

2 is a view schematically showing a lower plate of a subframe according to an embodiment of the present invention, and FIG. 3 is a view schematically showing a cut surface A1-A1' of FIG. 2 according to an embodiment of the present invention. .

As shown in FIG. 2 , the lower plate 100 of the sub frame may be implemented as a rectangular frame.

Referring to FIG. 2, which is an embodiment of the present invention, the lower plate 100 includes a first lower plate unit 110, a second lower plate unit 130, and a third lower plate unit covering each of the side surfaces of a rectangular metal plate 300. 150, and a fourth lower plate unit 170, and each of the lower plate units 110, 130, 150, and 170 is a separate plate to be separated from each other, as shown in FIG. is provided with

Both ends of each lower plate unit may be formed in an oblique direction so that when the four lower plate units are coupled together, a rectangular frame as shown in FIG. 2 is realized.

According to one embodiment of the present invention, each unit (110, 130, 150, 170) of the lower plate 100 is coupled to the metal plate 300 on the outside so that there is a gap between the units for smooth fastening. direction, and after the metal plate 300 is fastened, it may be pulled inward again to narrow the gap between the units to improve tensile force.

Also, the lower plate 100 according to the present embodiment may form first lower plate fastening holes 133 for coupling with the metal plate 300 and second lower plate fastening holes 131 for coupling with the connector 400. there is.

The second lower plate fastening holes 131 may be formed at both ends of each of the first to fourth lower plate units 110, 130, 150, and 170, and the first lower plate fastening holes 133 are formed at both ends of the second lower plate units 110, 130, 150, and 170. The lower plate fastening holes 131 may be spaced apart at predetermined intervals.

The first lower plate fastening hole 133 of the present invention is a hole for fastening together with the upper plate fastening hole 233 and the fastening hole of the metal plate 300 through a bolt coupling method, and may be implemented in a circular shape, for example. . And, the second lower plate fastening hole 131 is a hole for fastening together with the connector fastening hole 411 through a bolt coupling method, and may be implemented in an ellipse shape, for example.

The length of each side of the lower plate 100 of the subframe according to an embodiment of the present invention may be 339.8 mm, the size of the first lower plate fastening hole 133 may be Φ 3 mm, and the first lower plate fastening holes (133) may be placed at 34 mm intervals. In addition, the distance between the second lower plate fastening holes 131 located at both ends and the first lower plate fastening holes 133 formed next to the second lower plate fastening holes 131 may be 11.5 mm.

3 is a cross section (A1-A1') obtained by horizontally cutting the second lower panel unit 130 constituting the lower panel 100. For convenience of explanation, the second lower panel unit 130 is specifically described. do. The first lower plate unit 110 , the third lower plate unit 150 , and the fourth lower plate unit 170 are all formed in the same shape as the second lower plate unit 130 .

Referring to FIG. 3 , the second lower plate unit 130 forms a fastening groove 135 for interlocking and coupling with the upper plate 200 in a concavo-convex structure, and a bolt inserted into the first lower plate fastening hole 133 and A nut fastening groove 137 may be formed so that a coupled nut may be disposed.

Figure 4 is a view schematically showing an upper plate of a subframe according to an embodiment of the present invention, and Figure 5 is a view schematically showing a cut surface (A1-A1') of FIG. 4 according to an embodiment of the present invention. .

As shown in FIG. 4, the top plate 200 according to an embodiment of the present invention may be composed of four top plate units 210, 230, 250, and 270 corresponding to each side of the rectangular main frame. .

More specifically, the first upper plate unit 210 is coupled to the first lower plate unit 110, the second upper plate unit 230 is coupled to the second lower plate unit 130, and the third upper plate unit 250 may be coupled with the third lower plate unit 150 , and the fourth upper plate unit 270 may be coupled with the fourth lower plate unit 170 .

Each of the upper plate units 210, 230, 250, and 270 may form an upper plate fastening hole 233 for coupling with the lower plate 100 and the metal plate 300, and each upper plate fastening hole formed in the upper plate units. may be combined with each of the first lower plate fastening holes 133 formed in the lower plate units.

The upper plate fastening holes 233 may also be spaced apart from each other at predetermined intervals like the first lower plate fastening holes 133 .

The upper plate fastening hole 233 of the present invention is a hole for fastening together with the first lower plate fastening hole 133 and the fastening hole of the metal plate 300 through a bolt coupling method, and may be implemented in a circular shape, for example. .

The length of each side of the top plate 200 of the subframe according to an embodiment of the present invention may be 282.6 mm, the size of the top plate fastening hole 233 may be Φ3 mm, and the upper plate fastening holes 233 may be 34 mm Can be spaced apart. Also, a distance between one end of each upper plate unit and a central point of the first upper plate fastening hole 233 may be formed to be 5.3 mm.

5 is a cross section (A1-A1') obtained by horizontally cutting the second upper plate unit 230 constituting the upper plate 200, and is specifically described as representing the second upper plate unit 230 for convenience of description. do. The first upper plate unit 210 , the third upper plate unit 250 , and the fourth upper plate unit 270 are all formed in the same shape as the second upper plate unit 230 .

Referring to FIG. 5 , the second upper plate unit 230 may be coupled to the fastening groove 135 of the lower plate 100 to provide a rotary shaft 235 protruding to be rotatable. As a result, since the upper plate 200 and the lower plate 100 are engaged with the circular concave-convex portion of the rotary shaft 235 as shown in FIG. 5, the upper plate 200 rotates with respect to the lower plate 100 by this part it becomes possible

As described above, as the upper plate 200 rotates with respect to the lower plate 100 using the rotary shaft 235 , the metal plate 300 may be attached or detached.

6 is a schematic view of an upper plate of a connector according to an embodiment of the present invention, and FIG. 7 is a schematic view of a lower plate of a connector according to an embodiment of the present invention.

The connector 400 according to the present invention is a component located at the corner of the lower plate 100, and more specifically, the lower plate units 110, 130, 150, and 170 that are separated from each other constituting the lower plate 100 ), it is placed at the corner between each lower panel unit.

The connector 400 according to the present embodiment may include an upper connector plate 410 positioned on the upper surface of the lower plate 100 and a lower connector plate 430 positioned on the lower surface of the lower plate 100 . In addition, the connector 400 of the present invention may further include a connector connecting member 450 for coupling the lower plate unit, the upper connector plate 410, and the lower connector plate 430.

Figure 6 (a) is an elevational view of the connector top plate 410, and Figure 6 (b) is a view showing the cut plane (A1-A1') of (a).

Referring to (a) of FIG. 6, the connector upper plate 410 may be formed in a bent 'L' shape, and the connector upper plate fastening hole for coupling with the second lower plate fastening hole of each of the two lower plate units ( 411) may be formed in two.

According to one embodiment of the present invention, the length of each side of the connector top plate 410 on which the convex member 415 is formed may be 26.2 mm, and the length of each side of the connector top plate 410 where each connector top plate fastening hole 411 is located. The length of one side may be 16.1 mm.

The upper connector plate 410 according to the present embodiment is coupled to the fastening groove 135 of the lower plate 100, and a convex member 415 is formed to enable attachment and detachment. The upper connector plate 410 of the present invention can be separated and combined with the lower plate units through the convex member 415 .

Next, (a) of FIG. 7 is an elevational view of the lower connector plate 430, and (b) of FIG. 7 is a view showing the cut plane (A1-A1') of (a).

The connector lower plate 430 of the present invention is a component for fastening and fixing the connector connecting member 450 inserted into the connector upper plate fastening hole 411, and may serve as a nut, for example.

Referring to (a) of FIG. 7 , the connector lower plate 430 may be formed in a bent 'L' shape like the connector upper plate 410, and a connector connecting member inserted into the connector upper plate fastening hole 411 ( 450) may be formed in two connector lower plate fastening holes 431 are inserted.

According to one embodiment of the present invention, the length of the long side of the upper connector plate 410 may be 17.5 mm, and the length of one side of the lower connector plate 430 where each connector lower plate fastening hole 431 is located may be 7.5 mm. there is.

8 is a diagram schematically illustrating a detachable subframe assembly capable of reusing a stencil mask according to an embodiment of the present invention. That is, FIG. 8 is a view showing a state in which the upper plate, the lower plate, the connector, and the metal plate are all assembled.

And, Figure 9 is a view schematically showing the first cut surface (A1-A1') of Figure 8 according to an embodiment of the present invention, Figure 10 is a view showing the second cut surface (A2 of Figure 8) according to an embodiment of the present invention -A2') is a schematic diagram.

As shown in FIG. 8, the lower plate 100 according to the present embodiment has upper plate units constituting the upper plate 200 located on the upper surface, and a plurality of connectors 400 located in the corner between the upper plate units. , The upper plate 200 and the lower plate 100 may be coupled through the fastening member 500 (A). At this time, the fastening member 500 according to an embodiment of the present invention may be a bolt and a nut.

As the fastening member 500 of the present invention penetrates the upper plate fastening hole 233, the first lower plate fastening hole 133, and the metal plate fastening hole 313 formed in the metal plate 300, the upper plate 200, The lower plate 100 and the metal plate 300 may be fastened.

FIG. 9 shows the first cut plane A1-A1' of FIG. 8, but the configuration of the metal plate 300 is excluded.

Referring to FIG. 9 (a), in the upper plate 200 according to the embodiment of the present invention, the lower plate 100 rotates while the rotating shaft 205 is inserted into the fastening groove 105 of the lower plate 100 and coupled. And the metal plate 300 located between the top plate 200 can be replaced. That is, the upper and lower plates of the sub frame assembly of the present invention have the advantage of being reused by replacing only the metal plate in the method shown in FIG. 9, rather than being discarded after being used once.

9(b) shows a state in which the upper plate 200 returns to its original position with respect to the lower plate 100 and is coupled to the lower plate 100 by the fastening member 500.

As shown in FIG. 9 , the fastening member 500 according to this embodiment fixes a bolt 510 penetrating the upper plate fastening hole 233 and the first lower plate fastening hole 133 and the bolt 510. It may be composed of a nut 530 supporting fastening of the upper plate 200 and the lower plate 100 .

In this way, by rotating the upper plate 200 and the lower plate 100 of the hinged subframe, the metal plate 300 is fixed by bringing the two into close contact, or the metal plate 300 is fixed by spreading the upper plate 200 and the lower plate 100. Since it can be taken out, the subframe can be reused, and the metal plate 300 can be easily replaced and removed.

Referring to Figure 10, in the connector upper plate 410 according to an embodiment of the present invention, the convex member 415 can be coupled by being inserted into the fastening groove 105 of the lower plate 100, and the connector upper plate 410 is connected to the connector. It may be fastened to the lower plate 100 through the member 450 and the lower connector plate 430 .

The fastening member 500 and the connector connecting member 450 may be embodied as, for example, countersunk screws, but are not limited thereto, and various other fastening means may be used.

11 is a schematic diagram of a metal plate according to an embodiment of the present invention.

Usually, the thickness of the metal plate used for PCB printing is 100 to 200 μm, and the metal plate used for solar cell electrode printing is less than 100 μm.

As shown in FIG. 11, the metal plate 300 according to an embodiment of the present invention has an opening pattern 330 formed corresponding to an electrode pattern to be printed on a silicon substrate. In the case of a metal plate for printing solar cell electrodes, a bus bar electrode opening pattern and a finger electrode opening pattern may be formed on the metal plate 310 . This opening pattern 330 is generally formed by laser processing.

Metal plate fastening holes 313 for coupling with subframes, that is, the upper plate 200 and the lower plate 100 may be formed at regular intervals around the metal plate 310 . The metal plate fastening holes 313 according to the present embodiment are formed with a spacing distance matching that of the upper plate fastening holes 233 and the first lower plate fastening holes 133 .

12 is a view schematically showing a portion of a subframe in which an upper plate and a lower plate are assembled according to another embodiment of the present invention.

Figure 12(a) according to an embodiment is a view showing a portion of the first lower plate unit 110 and the fourth lower plate unit 170, before they are fastened by the connector 400. And, FIG. 12(b) shows the cut plane A1-A1' of FIG. 12(a).

Referring to (a) of FIG. 12, the major axis of the second lower plate fastening hole 171 is longer than the diameter of the cross section of the first lower plate fastening hole 173, and the second lower plate fastening hole 171 The minor axis is implemented as a hole having an elliptical cross section shorter than the diameter of the cross section of the first lower plate fastening hole 173 .

In (b) of FIG. 12 , the rotating shaft 275 of the fourth upper plate unit 270 is inserted into the fastening groove 175 of the fourth lower plate unit 170 and rotates while being coupled to form the upper plate 200 and the lower plate 100. It is a state in which the metal plate 300 is placed on top of the lower plate 100 in a state in which the gap is spread.

13 is a view schematically showing a part of a subframe assembly in which an upper plate, a lower plate, a connector, and a metal plate are assembled according to an embodiment of the present invention, and FIG. 14 is a view showing an upper plate according to another embodiment of the present invention; This is a schematic view of a part of the subframe assembly in which the lower plate, the connector, and the metal plate are assembled.

First, referring to (a) of FIG. 13, the aperture of the connector fastening hole 411 according to the present invention is the second lower plate fastening hole 171 formed at both ends of each of the lower plate units 110 to 170. It can be formed shorter than the major axis of

In order to reuse the upper plate 200, the lower plate 100, and the connector 400, the metal plate 300 to be replaced must be easily assembled to the sub frame assembly, and the assembled metal plate 300 does not move easily after assembly. It is important to give tension to prevent it.

In the sub-frame assembly of the present invention, the metal plate 300 can be conveniently mounted on the sub-frame assembly by using the elliptical aperture of the second lower plate fastening hole 171 as described above, and after being mounted, the tensile force can improve

The lower plate 100 pushes each lower plate unit 110 to 170 outward in a state of fastening with the connector upper plate 410, so that as shown in FIG. 13, the connector fastening hole 411 is the second lower plate fastening hole. The metal plate 300 can be easily mounted between the lower plate 100 and the upper plate 200 as the inner space of the lower plate units 110 to 170 is expanded by being positioned on the inner part of the plate 111 .

After that, as shown in FIG. 14, the lower plate 100 pulls each lower plate unit 110 to 170 inward again using the second lower plate fastening hole 111, so that the connector fastening hole 411 By positioning the outer portion of the second lower plate fastening hole 111, the tensile force between the metal plate 300, the lower plate 100, and the upper plate 200 may be improved.

15 is a view showing an assembled state of an upper plate, a lower plate, and a connector of a sub frame assembly according to an embodiment of the present invention.

As shown in FIG. 15, the connector top plate 410 according to this embodiment is disposed between different top plate units 110 and 170.

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

10: Removable subframe assembly
100: lower plate
200: top plate
300: metal plate
400: connector
500: fastening member

Claims (8)

A lower plate having a first lower plate fastening hole for coupling with the metal plate and covering each of the side surfaces of the metal plate;
An upper plate having an upper plate fastening hole for coupling with the metal plate together with the first lower plate fastening hole, and attaching and detaching the metal plate as it rotates while being coupled with the lower plate;
A connector located at a corner of a lower plate covering each of the side surfaces of the metal plate and forming a connector fastening hole for coupling with the lower plate,
The lower plate further includes a second lower plate fastening hole for coupling with the connector by a bolt fastening method,
A detachable subframe assembly capable of reusing a stencil mask, characterized in that the aperture of the connector fastening hole is shorter than a major axis of the aperture of the second lower plate fastening hole.
delete According to claim 1,
The lower plate,
Before the metal plate is coupled, the connector fastening hole is pushed outward to be located in an inner portion of the second lower plate fastening hole by using the second lower plate fastening hole formed larger than the cross-sectional area of the connector fastening hole,
After the metal plate is coupled, the metal plate is pulled inward so that the connector fastening hole is located at an outer portion of the second lower plate fastening hole by using the second lower plate fastening hole having a larger cross-sectional area than the connector fastening hole. A detachable subframe assembly capable of reusing a stencil mask, characterized in that to improve the tensile force between the lower plate.
According to claim 1,
The second lower plate fastening hole is detachable sub-frame assembly capable of reusing a stencil mask, characterized in that formed in an oval shape.
According to claim 1,
The lower plate includes first to fourth lower plate units covering each of the side surfaces of the metal plate,
The lower plate is a separable type in which the first to fourth lower plate units are separated from each other, and the first to fourth lower plate units are connected to each other by the connector.
According to claim 1,
The upper plate and the lower plate are detachable subframe assembly capable of reusing a stencil mask, characterized in that interlocking and coupled to each other by a concave-convex structure.
According to claim 1,
The connector,
An upper connector plate positioned on an upper surface of the lower plate;
A detachable subframe assembly capable of reusing a stencil mask, comprising a lower connector plate positioned on a lower surface of the lower plate.
According to claim 1,
Further comprising a fastening member passing through the fastening hole of the metal plate, the upper plate fastening hole, and the first lower plate fastening hole,
The detachable subframe assembly capable of reusing the stencil mask, characterized in that the upper plate and the lower plate are fastened with bolts through the fastening member.

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