JP2010247504A - Plate frame for metal mask - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plate frame for a metal mask, which hardly causes curling up of the edges of part of a plurality of engaging holes of the metal mask and partial loosening of the metal mask. <P>SOLUTION: The plate frame for the metal mask includes: a quadrangular frame 11; a first locking portion 12 having a first support portion 13 and a first projecting portion 14; a second locking portion 22 having a second support portion 23, a second projecting portion 24, and a base end support portion 25: an inclining means 30 having a center block 31 with a first guide portion 31G, a slide mechanism 32, a pair of side blacks 34 with a second guide portion 34G, and a pair of movable blocks 33 with a first bearing portion 33P1 and a second bearing portion 33P2; and a biasing means 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a metal used in which a metal mask is detachably stretched when a solder paste is applied to a printed wiring board or the like by screen printing, for example, for mounting various electronic components, and further in general screen printing. The present invention relates to a mask frame.

  Conventionally, an example of this type of metal mask plate frame is described in Patent Document 1. Specifically, as shown in FIGS. 12 and 13, the frame member 101, the attaching means 108, and the retracting means are provided. The inner wall 102 of the frame member 101 has a front end 106 that serves as a fulcrum for supporting the metal mask 107 and a horizontal recess 122 that is below the edge of the front end 106 and faces outward. The pull-in means has an eccentric shaft portion 117 and is received by a bearing fixed to the frame member 101 at the time of pasting, and a shaft 116 rotating around a center line fixed to the frame member 101 by the operation of the lever 115. Have. The sticking means 108 has a convex fulcrum 123 in contact with the concave portion 122 of the frame member 101, and a yoke portion 119 in contact with the eccentric shaft portion 117 of the shaft 116 of the pulling means with the direction opposite to the fulcrum 123 in the opposite direction. The block 118 is provided below the required number of pin plates 109 for attaching the metal mask 107. Then, the moving component of the eccentric shaft portion 117 in the front-rear direction (vertical direction in FIG. 13) due to the eccentric rotation of the eccentric shaft portion 117 is used for the movement of the yoke portion 119 in the front-rear direction, and the front-rear direction of the eccentric shaft portion 117 Is absorbed by a coil spring 121 arranged to press the eccentric shaft portion 117 against the hole 120 in the block 118, thereby causing the block 118 to move in a circular arc around the fulcrum 123. .

JP 2000-301690 A

In the metal mask plate frame described in the background art, the eccentric shaft portion 117 is rotated by the lever 115 connected to one end of the shaft 116, but the metal mask 107 is twisted as the shaft is twisted and separated from the lever 115. There is a tendency that the pulling force for stretching is reduced. For this reason, in the metal mask to be stretched, the pulling force concentrates on the engagement hole closest to the lever among the plurality of engagement holes arranged in the vicinity of the edge, and the metal mask is turned up to the edge of the engagement hole. There is a problem that the metal mask is likely to cause a partial sag due to the occurrence of the sag.
The present invention solves the above-described problems, and in a metal mask plate frame that is detachably stretched and used, the metal mask is turned over at the edges of some of the engagement holes of the metal mask. It is an object of the present invention to provide a metal mask plate frame that is unlikely to cause a rise or partial sagging in a metal mask.

The present invention is (1) a metal mask plate frame for stretching a metal mask having a plurality of engagement holes formed in the vicinity of the edge,
A rectangular frame,
A first support portion provided with a first fulcrum extending on the inner peripheral side of one of a pair of sides facing each other of the frame and supporting the main body of the metal mask; A first protrusion having a plurality of first protrusions that protrude from the support and are inserted into the engagement holes of the metal mask on the distal end side;
A second support part provided with a second fulcrum extending on the inner peripheral side of the other side of the pair of sides of the frame and supporting the body of the metal mask; and the second support part A second protrusion having a plurality of second protrusions inserted into the engagement holes of the metal mask on the distal end side, and a proximal end side of the second protrusions. A second locking portion comprising: a proximal end support portion;
A center block that is slidably supported by the second locking portion and has first guide portions on both sides, and a slide mechanism that slides the center block in a direction orthogonal to the pair of sides of the frame And a pair of side blocks each having a second guide portion on a side portion facing the first guide portion of the center block, each being fixed in the vicinity of both ends of the second support portion, A first passive portion that is slidably supported by the second locking portion and that is in contact with the first guiding portion on a side of the center block facing the first guiding portion; A pair of side blocks that have second passive portions in contact with the second guide portions on the side portions facing the second guide portions, respectively, and are pushed forward obliquely by the slide operation of the center block. A tilting means comprising a movable block, and
Biasing means for biasing the second protrusion in an upright direction;
Is provided. (Hereinafter referred to as the first technical means of the present invention.)

  One of the main forms of the metal mask plate frame is as follows: (2) In addition to the first technical means, the sliding mechanism of the tilting means includes a cam, a cam receiver, and one end of the cam. Link means having the other end locked to the center block, and cam driving means for detachably projecting from the cam and rotating the cam by tilting operation. (Hereinafter referred to as the second technical means of the present invention.)

The operation of the first technical means is as follows. That is, a first support having a quadrangular frame and a first fulcrum extending on the inner peripheral side of one of a pair of opposing sides of the frame and supporting the main body of the metal mask. And a first protrusion provided with a plurality of first protrusions protruding from the first support portion and inserted into the engagement hole of the metal mask on the distal end side. And
A second support part that extends to the inner peripheral side of the other side of the pair of sides of the frame and has a second fulcrum that supports the main body of the metal mask, and tilts toward the second support part A second protrusion having a plurality of second protrusions that are freely supported and inserted into the engagement hole of the metal mask on the distal end side, and a proximal end support that locks the proximal end side of the second protrusions A second locking portion comprising: a portion;
A center block that is slidably supported by the second locking portion and has first guide portions on both sides, and a slide mechanism that slides the center block in a direction orthogonal to the pair of sides of the frame And a pair of side blocks each having a second guide portion on a side portion facing the first guide portion of the center block, respectively fixed in the vicinity of both ends of the second support portion, 2 having a first passive portion that is slidably supported by the two locking portions and that is in contact with the first guiding portion on the side portion facing the first guiding portion of the center block. A pair of movable blocks each having a second passive portion that is in contact with the second guide portion on the side opposite to the second guide portion of the block and respectively pushed obliquely forward by the sliding motion of the center block. And click, and the tilting means comprising a,
Biasing means for biasing the second protrusion in an upright direction;
Is provided.
For this reason, the center block is slid by the slide mechanism, and the first block is provided on both side portions of the center block, and the second guide portion of the pair of side blocks disposed opposite to the first guide portion. The pair of movable blocks are dispersed at both ends and converted into obliquely forward movements of the movable blocks, and the second protrusions are tilted while being dispersed at the center and both ends in the width direction. .

The operation of the second technical means is as follows. That is, the sliding mechanism of the tilting means includes a cam, a cam receiver, link means whose one end is locked to the shaft portion of the cam and the other end is locked to the center block, and detachable from the cam. And a cam driving means for rotating the cam by tilting operation.
For this reason, a sufficient tilting motion can be imparted to the second protrusion by a slight rotation of the cam, and the metal mask can be stretched over the metal mask plate frame in a simple and short time.

  According to the metal mask plate frame of the present invention, the metal mask can be stably stretched by preventing the metal mask from being turned up or partially slackened in some of the engagement holes of the metal mask. can do.

1 is a plan view showing a first embodiment of a metal mask plate frame of the present invention. FIG. It is a figure which shows the internal structure of the said embodiment, FIG. 2 (A) is the partial expanded sectional view in the AA line of FIG. 1, FIG. 2 (B) is the partial expanded sectional view in the BB line of FIG. is there. It is a figure which shows the principal part of the said embodiment, FIG.3 (C) is an enlarged plan view of the principal part which shows the area | region of C enclosed with the broken line of FIG. 1, FIG.3 (D) is enclosed with the broken line of FIG. It is the enlarged plan view of the principal part which shows the area | region of D. It is a top view which shows operation | movement of the said embodiment. It is a figure which shows operation | movement of the said embodiment, FIG.5 (E) is the partial expanded sectional view in the EE line | wire of FIG. 4, FIG.5 (F) is the partially expanded sectional view in the FF line | wire of FIG. . It is a top view which shows the state which mounted the metal mask on the metal mask plate frame of the said embodiment. It is a figure which shows the state which mounted the metal mask in the metal mask plate frame of the said embodiment, FIG.7 (G) is the elements on larger scale in the GG line of FIG. 6, FIG.7 (H) is FIG. It is a partial expanded sectional view in the HH line. It is the elements on larger scale corresponding to FIG.7 (H) which shows the operation | movement which sets a metal mask to the metal mask plate frame of the said embodiment. It is a figure which shows the state which stretched the metal mask to the metal mask plate frame of the said embodiment, FIG.9 (I) is the elements on larger scale of the position corresponded to the GG line | wire of FIG. ) Is a partially enlarged cross-sectional view of a position corresponding to the line HH in FIG. 6. It is a top view which shows the metal mask plate frame of the 2nd Embodiment of this invention. It is a top view which shows the state which mounted the metal mask on the metal mask plate frame of the said embodiment. It is a figure which shows an example of background art. It is an expanded sectional view of the important section of the above-mentioned background art.

Next, a first embodiment of the metal mask plate frame of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the metal mask plate frame 10 of this embodiment includes a rectangular frame 11, a first locking portion 12, a second locking portion 22, and a tilting means 30. And urging means 15.
The frame 11 has a pair of sides 11a and 11b facing each other, and is formed in a quadrangular shape. Each side 11a, 11b is formed in a rectangular tube shape by drawing from a metal metal such as aluminum.
The first locking portion 12 extends on the inner peripheral side of one side 11 a of the pair of sides 11 a and 11 b facing each other of the frame 11. And the 1st latching | locking part 12 is provided with the 1st fulcrum 13T which supports the main body of the metal mask not shown in figure, for example, the 1st support part 13 formed by sheet-metal processing from metal plates, such as aluminum, and the 1st And a first protrusion 14 formed by sheet metal processing, for example, from a metal plate such as stainless steel, provided with a plurality of first protrusions 14T on the tip side.
The second locking portion 22 extends on the inner peripheral side of the other side 11 b of the pair of sides 11 a and 11 b facing the frame 11. And the 2nd latching | locking part 22 is equipped with the 2nd fulcrum 23T which supports the main body of the metal mask not shown in figure, the 2nd support part 23 formed by sheet-metal processing from metal plates, such as aluminum, for example, and 2nd The second protrusion 24 is supported by the support 23 in a tiltable manner and includes a plurality of second protrusions 24T on the distal end side, and is formed by sheet metal processing from a metal plate such as stainless steel, and the second protrusion 24. And a base end support portion 25 for locking the base end 24B side.
The tilting means 30 includes a center block 31, a slide mechanism 32, a pair of side blocks 34 and 34, and a pair of movable blocks 33 and 33.
Among these, the center block 31 of the tilting means 30, the pair of side blocks 34 and 34, and the pair of movable blocks 33 and 33 are sandwiched between the second support portion 23 and the second protrusion 24. The second locking portion 22 is disposed inside.
As shown in FIG. 3, the center block 31 is formed by cutting a metal column such as stainless steel, and has first guide portions 31 </ b> G on both sides, and is slidably supported by the second locking portion 22. Has been. Further, the pair of side blocks 34, 34 have a second guide portion 34 G on the side portion of the center block 31 on the side facing the first guide portion 31 G, and for example near both ends of the second support portion 24. It is fixed by screwing. The pair of movable blocks 33, 33 have first passive portions 33 </ b> P <b> 1 in contact with the first guide portions 31 </ b> G on the side portions facing the first guide portions 31 </ b> G of the center block 31. A second passive portion 33P2 that is in contact with the second guide portion 34G is provided on the side portion that faces the second guide portion 34G.
The pair of movable blocks 33 and 33 are respectively guided at both ends in the longitudinal direction by a center block 31 and a side block 34. Further, one side of the pair of movable blocks 33, 33 in the longitudinal direction is in contact with the second protrusion 24.
The center block 31 is connected to a slide mechanism 32 described later, and is configured to be slidable in a direction orthogonal to the pair of sides 11 a and 11 b of the frame 11.
The urging means 15 is screwed to the second support portion 23 together with the base end support portion 25 of the second locking portion 22, for example.

In the present embodiment, as shown in FIG. 3, the first guide portion 31 </ b> G of the center block 31 includes a slope that is disposed obliquely with respect to the pair of opposite sides 11 a and 11 b of the frame 11. Similarly, the second guide portion 34G of the side blocks 34, 34 is also composed of a slope arranged obliquely with respect to the pair of sides 11a, 11b of the frame 11.
On the other hand, the movable blocks 33 and 33 are supported by a plurality of small-diameter balls and these small-diameter balls on the slope formed so as to face the first guide portion 31G of the center block 31 as the first passive portion 33P1. In addition, a ball bearing including a large-diameter ball accommodated in the casing is embedded so that a part thereof is exposed, and friction between the center block and the movable block is reduced. Similarly, on the slope formed so as to face the second guide portion 34G of the side block 34 of the movable blocks 33, 33, as the second passive portion 33P2, a plurality of small-diameter balls and these as described above. A ball bearing including a large-diameter ball accommodated in the casing so as to be partially supported by the small-diameter ball is embedded, and friction between the side block and the movable block is reduced.
Then, the pair of movable blocks 33 and 33 are pushed obliquely forward as indicated by the two-dot chain line arrow by the sliding operation of the center block 31 as indicated by the one-dot chain line arrow in FIG.

As shown in FIG. 2, the slide mechanism 32 in the metal mask plate frame 10 of the present embodiment includes link means 32a, a cam receiver 32b, a cam 32C, and a cam drive means 32d (not shown). The cam receiver 32b and the cam 32C are accommodated inside one side 11b of the frame 11. The link means 32a has one end locked to the center block 31 accommodated in the second locking portion 22, penetrates the cam receiver 32b, and the other end locked to the shaft portion 32CS of the cam 32C. Yes. The cam 32C is formed with a groove for inserting the link means 32a and an insertion hole 32CH for detachably supporting one end of the cam drive means 32d (not shown).
Further, a slit is formed in the frame 11 so that the frame 11 can be tilted in a state where the cam driving means 32d is inserted into the insertion hole 32CH of the cam 32C.

Next, the operation of the metal mask plate frame 10 of the present embodiment will be described with reference to FIGS.
First, in the initial state, the frame 11 is tilted to the second support portion 23 of the second locking portion 22 extending to the inner peripheral side of the other side 11b of the pair of sides 11a and 11b facing each other. The second protrusion 24 that is freely supported is biased by the biasing means 15 and is in an almost upright state. Next, the center block 31 of the tilting means 30 is slid toward the outer peripheral side in a direction orthogonal to the pair of opposite sides 11 a and 11 b of the frame 11 by the slide mechanism 32. At this time, the first guide portion 31G of the center block 31 pushes the first passive portion 33P1 on one side of each of the pair of movable blocks 33 and 33 obliquely forward and the second guide of the side block 34. The second passive portion 33P2 on the other side of each of the pair of movable blocks 33, 33 is pushed obliquely forward by the portion 34G. For this reason, the tip end side of the second protrusion 24 having the second protrusion 24 </ b> T is tilted toward the outer peripheral direction of the frame 11. At this time, since propulsive force is applied to both ends of the pair of movable blocks 33, 33, the propulsive force of the tilting action acts simultaneously on the center in the width direction of the second protrusion 24 and in the vicinity of both ends.

Next, an example of a procedure for stretching the metal mask 40 on the metal mask plate frame 10 of the present embodiment will be described with reference to FIGS.
First, as shown by an alternate long and short dash line on the metal mask plate frame 10 of the present embodiment, a through hole 42 corresponding to a printing pattern is formed in the substantially central portion of the main body, and a plurality of engagements are provided in the vicinity of the edge portion. A metal mask 40 in which the holes 41 are formed is placed. The main body of the metal mask 40 has a first fulcrum 13T on the distal end side of the first support portion 13 of the first locking portion 12 and a distal end side of the second support portion 23 of the second locking portion 22. It is supported at the second fulcrum 23T. The engagement hole 41 formed in the vicinity of one edge of the pair of edges facing each other of the metal mask 40 is the first protrusion 14T of the first protrusion 14 of the first locking part 12. The second protrusion 24 </ b> T of the second protrusion 24 of the second locking portion 22 is inserted into the engagement hole 41 that is disposed above and formed near the other edge of the metal mask 40. Then, one end side of the cam drive means 32d is inserted into the insertion hole 32CH formed in the cam 32C of the slide mechanism 32 of the tilting means 30. Then, in the state in which the vicinity of the pair of opposite edges of the metal mask 40 is pushed into the first protrusion 14 of the first locking part 12 and the second protrusion 24 of the second locking part 22, respectively. By tilting the cam drive means 32d in the direction of the arrow indicated by the alternate long and short dash line, as shown in FIG. 9I, the engagement hole 41 near one edge of the pair of opposed edges of the metal mask 40 is formed. The first protrusion 14 </ b> T of the first protrusion 14 of the first locking part 12 is inserted and engaged, and the edge is drawn along the first support part 13 toward the inner peripheral side of the frame 11. Further, as shown in FIG. 9J, the second protrusion 24T of the second protrusion 24 of the second locking portion 22 is inserted into the engagement hole 41 in the vicinity of the other edge of the metal mask 40. And the edge portion is drawn to the inner peripheral side of the frame 11.

  Next, a second embodiment of the metal mask plate frame of the present invention will be described with reference to FIG. 10 and FIG. The metal mask plate frame 50 of this embodiment is perpendicular to the pair of opposite sides 11a and 11b of the metal mask plate frame 10 of the previous first embodiment, and is disposed on the pair of sides opposite to each other. Similar to the embodiment, a first locking portion and a second locking portion are provided.

  For convenience of explanation, the same components as those described above are denoted by the same reference numerals, and the corresponding components are denoted by “(dash)”. As shown in FIG. 10, a pair of sides 51 a and 51 b of the frame 51 that are opposite to each other have a first locking portion 12 and a second edge, respectively, similarly to the metal mask plate frame 10 of the first embodiment. The locking portion 22 is provided. Also, a pair of opposite sides 51c and 51d that are orthogonal to these sides correspond to the first locking portion 12 and the second locking portion 22 of the metal mask plate frame 10 of the first embodiment. Thus, a first locking portion 12 ′ and a second locking portion 22 ′ are provided, respectively.

  In addition, as shown in FIG. 11, the metal mask 60 stretched on the metal mask plate frame 50 of the second embodiment is transparent to form a printing pattern in the substantially central portion of the main body as described above. The holes 62 are formed, and the engagement holes 61 are formed in the vicinity of the edges of the four sides of the metal mask 60.

Next, a preferred embodiment of each part of the metal mask plate frame of the present invention will be described.
The frame is preferably rectangular. Further, the four sides of the frame may be integrated, or may be configured by connecting separate sides at the ends. Moreover, you may provide the adjustment means for adjusting the space | interval of a pair of opposing edge | side in each edge | side or the connection part of each edge | side.

  The first locking portion only needs to have a first support portion and a first projection portion, and if necessary, the first projection portion is tilted in the same manner as the second locking portion. A tilting means may be added.

  As a 2nd latching | locking part, it is preferable to have a 2nd support part, a 2nd projection part, and a base end support part. Further, the second support part and the base end support part may be integrated.

  The tilting means preferably includes a center block, a pair of movable blocks, a pair of side blocks, and a slide mechanism. A plurality of center blocks may be provided. Further, the pair of side blocks may be integrated with, for example, the second support portion or the frame. Further, the first guiding part and the first passive part, and the second guiding part and the second passive part are in a pair relationship. For this reason, in the embodiment of the present invention, the means for reducing the friction is provided in the passive part. However, the present invention is not limited to this, and the means for reducing the friction may be provided in either the induction part or the passive part. In addition, each may be provided. As a means for reducing friction, a ball bearing is preferable because it is easy to handle. However, the present invention is not limited to this, and various sliders can be used. Moreover, you may stick a slipper sheet | seat etc. on the surface of a block.

  As the slide mechanism of the tilting means, the cam and the link means are used in the present embodiment because the operation is simple. However, the present invention is not limited to this, and a handle having a link structure or a screw may be used.

  Moreover, it is preferable that the metal mask plate frame of the present invention has an urging means for urging the second protrusion in an upright direction. Further, the biasing means may be integrated with the second protrusion.

  Various known metal masks having a plurality of engagement holes in the vicinity of the edge can be stretched and used. In particular, it is suitable for a metal mask used for cream solder printing.

10: Metal mask plate frame 11: Frame 12, 12 ': First locking portion 13, 13': First support portion 13T, 13T ': First fulcrum 14, 14': First protrusion 14T: 1st protrusion 15: Energizing means 22, 22 ': 2nd latching | locking part 23,23': 2nd support part 23T, 23T ': 2nd fulcrum 24, 24': 2nd protrusion Portion 24B: Base end 24T, 24T ′: Second protrusion 25: 25 ′: Base end support portion 30: Tilt means 31, 31 ′: Center block 31G: First guide portion 32, 32 ′: Slide mechanism 32a, 32a ′: Link means 32b, 32b ′: Cam receiver 32C, 32C ′: Cam 32d: 32d ′: Cam drive means 33, 33 ′: Movable block 33P1: First passive part 33P2: Second passive part 34, 34 ': Side block 34G: Second guiding part 40: Metal Mask 41: Engagement hole 42: Print pattern (through hole)
50: Metal mask plate frame 51: Frame 60: Metal mask 61: Engagement hole 62: Print pattern (through hole)

Claims (2)

A metal mask plate frame for stretching a metal mask having a plurality of engagement holes formed in the vicinity of the edge,
A rectangular frame,
A first support portion provided with a first fulcrum extending on the inner peripheral side of one of a pair of sides facing each other of the frame and supporting the main body of the metal mask; A first protrusion having a plurality of first protrusions that protrude from the support and are inserted into the engagement holes of the metal mask on the distal end side;
A second support part provided with a second fulcrum extending on the inner peripheral side of the other side of the pair of sides of the frame and supporting the body of the metal mask; and the second support part A second protrusion having a plurality of second protrusions inserted into the engagement holes of the metal mask on the distal end side, and a proximal end side of the second protrusions. A second locking portion comprising: a proximal end support portion;
A center block that is slidably supported by the second locking portion and has first guide portions on both sides, and a slide mechanism that slides the center block in a direction orthogonal to the pair of sides of the frame And a pair of side blocks each having a second guide portion on a side portion facing the first guide portion of the center block, each being fixed in the vicinity of both ends of the second support portion, A first passive portion that is slidably supported by the second locking portion and that is in contact with the first guiding portion on a side of the center block facing the first guiding portion; A pair of side blocks that have second passive portions in contact with the second guide portions on the side portions facing the second guide portions, respectively, and are pushed forward obliquely by the slide operation of the center block. A tilting means comprising a movable block, and
Biasing means for biasing the second protrusion in an upright direction;
A metal mask plate frame characterized by comprising:   A slide mechanism of the tilting means includes a cam, a cam receiver, a link means having one end locked to the shaft portion of the cam and the other end locked to the center block, and a detachable projection on the cam. The metal mask plate frame according to claim 1, further comprising: a cam driving unit that rotationally drives the cam by a tilting operation.

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