JP4324800B2 - Substrate support - Google Patents

Description

  The present invention relates to a substrate support for supporting a substrate on which screen printing is performed.

  Conventionally, in order to apply a printing paste such as a conductive paste to a substrate or to form a wiring film for an electronic circuit, the substrate is fixed to a substrate support and screen printing is performed. For example, screen printing is performed on the substrate as follows.

  First, as shown in the schematic cross-sectional view of FIG. 21, a substrate support 100 that supports a substrate is attached below a squeegee 140 and a scraper 141 of a screen printing machine, the substrate 103 is placed, and then a printing pattern (not shown) The screen on which is formed is disposed on the upper surface of the substrate 103.

  The squeegee 140 and the scraper 141 are supported by a support device (not shown), and are configured to be movable up and down in the direction indicated by an arrow U in the figure and to be horizontally movable. Further, the squeegee 141 is formed of, for example, rubber or urethane. In order to enable printing on the entire upper surface of the substrate 103 by one squeezing, as shown in the plan view of FIG. The gap length is configured to be wider than the width of the substrate 103.

  Next, as shown in FIG. 21A, while the printing paste (not shown) is supplied onto the screen from between the squeegee 140 and the scraper 141, the printing paste is moved on the screen by moving the scraper 141 in the arrow R direction. Coating. At this time, it arrange | positions so that the lower end of the squeegee 140 may be located above the lower end of the scraper 141, and it arrange | positions at predetermined intervals from the screen upper surface so that the scraper 141 can coat printing paste on the screen upper surface.

  After the coating of the printing paste by the scraper 141 is completed, as shown in FIG. 21B, the positional relationship between the squeegee 140 and the scraper 141 is switched to support the squeegee 140 so as to press the substrate 103 via the screen. The scraper 141 is supported so as not to contact the screen. In this state, the squeegee 140 and the scraper 141 are moved horizontally in the direction of arrow S in the figure. The printing paste coated on the screen by the scraper 141 is printed on the substrate 103 through the screen by the squeegee 140 that slides on the screen.

  In this way, when printing paste is printed on the substrate 103, the squeegee 140 presses the substrate 103 through the screen, so that the substrate 103 may be damaged such as cracking. For this purpose, for example, a substrate is generally supported by a substrate support as disclosed in Patent Document 1.

  As shown in FIG. 23, the basic configuration of the substrate support as disclosed in Patent Document 1 is configured by forming a recess 102 that accommodates the substrate 103 on the upper surface of the mounting table 101.

By providing the recess 102 in this way and accommodating the substrate 103 therein to perform screen printing, both ends of the squeegee abut against the mounting table upper surface 104 around the recess 102, so that the pressing force of the squeegee 140 is reduced. The portion is received by the mounting table upper surface 104 around the recess 102, so that excessive pressing force can be prevented from being applied to the substrate 103, and damage such as cracking can be prevented from occurring in the substrate 103. . If the depth of the recess 102 is larger than the thickness of the substrate 103, the squeegee 140 cannot press the substrate 103 through the screen, and it becomes difficult to print the printing paste on the substrate 103. Therefore, the depth of the recess 102 is formed to be approximately the same as the thickness of the substrate 103.
Japanese Patent Laid-Open No. 11-179878

  However, there are the following problems in supporting a substrate using the substrate support in which the concave portions are integrally formed as described above. That is, when screen printing is performed on a substrate, it is necessary to support the substrate using a substrate support having a recess depth substantially the same as the plate thickness of the substrate, but the substrate in which the recesses are integrally formed. Since the support is heavy, there is a problem in that it is not easy to replace the entire substrate support whenever the thickness of the substrate changes.

  In addition, there is a problem that it is difficult to secure a storage space for the substrate support because it is necessary to store a substrate support having a recess depth corresponding to substrates having various plate thicknesses.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a substrate support that can improve workability when screen printing is performed on substrates having various plate thicknesses.

The object of the present invention is a substrate supporter for supporting a substrate on which screen printing is performed, and a mounting table and a frame body that forms an accommodation space for the substrate by mounting on the upper surface of the mounting table. The upper part of the mounting table is provided with a magnet along the mounting position of the frame body, and the frame body is made of a magnetic material and is in contact with the side surface of the mounting table. With components,
This is achieved by a substrate support in which a holding space is formed between the locking member and the mounting table .

  In this substrate support, the magnet is preferably embedded in the mounting table so as not to protrude from the upper surface of the mounting table.

  ADVANTAGE OF THE INVENTION According to this invention, the board | substrate support tool which can improve the workability | operativity at the time of performing screen printing to the board | substrate which has various board thickness can be provided.

  Hereinafter, the substrate support of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic sectional view of a substrate support according to an embodiment of the present invention. As shown in FIG. 1, the substrate support 1 supports a substrate on which screen printing is performed, and includes a frame 10 and a mounting table 20.

  The frame body 10 is made of a magnetic material that is attracted by a magnet, and is placed on the upper surface 25 of the mounting table 20 to form a substrate accommodation space 12. As shown in the plan view of FIG. 2 and the side views of FIGS. 3 and 4, the frame body 10 includes a flat frame body 11 formed in a rectangular shape in plan view, and a locking member 15. It is formed in an L shape in side view. The thickness w1 of the frame body 11 is formed to be substantially the same as the thickness of the substrate accommodated in the accommodation space 12. Further, the inner peripheral edge shape of the frame body 11 is formed to be substantially the same shape as the outer shape of the substrate accommodated in the accommodation space 12. In consideration of the processing tolerance of the outer shape of the substrate accommodated in the accommodating space 12, the inner peripheral edge shape of the frame body 11 may be formed to be slightly larger than the outer shape of the substrate.

  The locking member 15 is a plate-like member provided over the entire length of the side edge portion 11 a of the frame body 11 so as to be substantially perpendicular to the flat frame body 11. The locking member 15 is a member that contacts the side surface of the mounting table 20.

  Examples of the magnetic material that forms the frame 10 include magnetic metal materials such as iron, martensitic stainless steel, and ferrite stainless steel, and synthetic resins mixed with magnetic metal materials.

  As shown in the plan view of FIG. 5 and the side view of FIG. 6, the mounting table 20 is a rectangular member in plan view, and its upper surface 25 is configured to be a smooth surface. A plurality of columnar magnets 22 are provided at an upper portion of the mounting table 20 at predetermined intervals along the mounting position of the frame body 10 described above. Further, as shown in FIG. 1, each magnet 22 is embedded in a magnet mounting recess 21 formed on the upper surface 25 of the mounting table 20 by being bonded and fixed by, for example, an epoxy resin adhesive. Each magnet 22 is embedded and attached to the upper part of the mounting table 20 so as not to protrude from the upper surface 25 of the mounting table 20, for example, from the viewpoint of preventing the frame 10 from rattling and stably fixing to the mounting table 20. preferable. In the present embodiment, the exposed surface of each magnet 22 and the upper surface 25 of the mounting table 20 are configured to be flush with each other. In the present embodiment, a permanent magnet is employed as the magnet 22.

  Further, a rectangular cutout 27 is formed on one side surface 24 of the mounting table 20, and the frame body 10 described above is mounted on the mounting table 20, and the locking member 15 is in contact with the side surface 24. In this case, for example, a holding space 28 having a size and a depth sufficient to hold or hook the locking member 15 of the frame 10 with a finger or a tool is provided between the locking member 15 and the mounting table 20. Is formed. Further, as shown in FIGS. 5 and 6, a plurality of magnets 22 are embedded at predetermined intervals on the side surface 24 of the mounting table so that the locking member 15 of the frame 10 can be attracted and fixed. ing.

  As shown in FIG. 5, a plurality of suction holes 23 penetrating from the upper surface 25 to the lower surface 26 of the mounting table 20 are formed in the center of the mounting table 20. Each suction hole 23 is connected to a suction device (not shown) at its lower end.

  A method of supporting the substrate 50 using the thus configured substrate support 1 and applying a printing paste such as a conductive paste by screen printing will be described below with reference to FIGS.

  First, as shown in FIG. 7, the side surface 24 of the mounting table 20 provided with the gripping space portion 28 is moved in the direction in which the squeegee 40 presses the substrate 50 through the screen and moves horizontally (arrow S direction, Hereinafter, the mounting table 20 is arranged so as to be upstream of the squeezing direction S). Next, the frame 10 having a thickness corresponding to the thickness of the substrate 50 on which screen printing is performed is placed on the upper surface 25 of the placement table 20. At this time, the frame body 10 is mounted on the mounting table 20 so that the locking member 15 of the frame body 10 abuts on the side surface 24 of the mounting table 20 in which the holding space portion 28 is formed. Thus, since the frame 10 can be fixed to the mounting table 20 via the magnet 22, the frame 10 can be easily attached to the mounting table 20.

  After the attachment of the frame body 10 to the mounting table 20 is completed, the substrate 50 is stored in the storage space 12 formed by mounting the frame body 10 on the upper surface 25 of the mounting table 20. Then, the suction device (not shown) is operated, and the substrate 50 is sucked and fixed to the mounting table 20 by sucking air in the arrow T direction through the suction hole 23, and the screen on which the printing pattern (not shown) is formed is mounted on the substrate. 50 on the upper surface. Thereafter, the squeegee 40, the scraper 41, and the like are operated, and for example, the printing paste is applied to the substrate 50 by the method described in the background art. That is, as shown in FIG. 8 (a), the printing paste on the screen is moved horizontally in the direction indicated by the arrow R while supplying the printing paste (not shown) from between the squeegee 40 and the scraper 41 onto the screen. Coating. At this time, it arrange | positions so that the lower end of the squeegee 40 may be located above the lower end of a scraper, and it arrange | positions at predetermined intervals from the screen upper surface so that the scraper 41 can coat printing paste on the screen upper surface.

  After the coating of the printing paste by the scraper 41 is finished, as shown in FIG. 8B, the positional relationship between the squeegee 40 and the scraper 41 is switched, and the squeegee 40 is supported so as to press the substrate 50 through the screen. At the same time, the scraper 41 is lifted and supported. In this state, the squeegee 40 and the scraper 41 are moved horizontally in the squeezing direction S. The printing paste coated on the screen by the scraper 41 is printed on the substrate 50 through the screen by the squeegee 40 that slides on the screen.

  The thickness of the frame 10 is configured to be substantially the same as the thickness of the substrate 50, and both ends of the squeegee 40 come into contact with the upper surface of the frame 10. When printing on 50, the frame body 10 can receive a part of the pressing force of the squeegee 40. As a result, it is possible to prevent an excessive pressing force from being applied to the substrate 50, and it is possible to prevent the substrate 50 from being damaged such as a crack.

  Further, when printing with the squeegee 40, the squeegee 40 moves horizontally in the squeegeeing direction S while abutting the frame 10, so that the squeegee 40 moves toward the squeegeeing direction S. However, since the frame 10 is attracted and fixed to the mounting table 20 by the magnet 22, the frame 10 can be prevented from moving in the squeezing direction S. Further, for example, when the squeegee 40 is strongly hit against the frame body 10, the horizontal movement of the squeegee 40 generates a large force for moving the frame body 10 in the squeezing direction S. However, even in such a case, since the locking member 15 of the frame 10 is in contact with the side surface 24 of the mounting table 20 on the upstream side with respect to the squeezing direction S, the frame 10 is It is possible to reliably prevent the movement in the squeezing direction S.

  Note that when the squeegee 40 moves horizontally in the squeezing direction S while pressing the substrate 50 through the screen, even if a force is applied to move the substrate 50 in the squeezing direction S. By adopting a configuration in which the substrate 50 is sucked and fixed to the mounting table 20 through the suction hole 23 as in the present embodiment, the substrate 50 is reliably prevented from moving in the squeezing direction S. Can do.

  Next, when screen printing is performed on the substrates 50 having different plate thicknesses, the frame body 10 is replaced with a frame corresponding to the plate thickness of the substrate 50 on which the screen printing is performed. In order to perform the replacement operation of the frame body 10, first, a finger or the like is inserted into the gripping space portion 28 provided on the side surface 24 of the mounting table 20 that contacts the locking member 15 of the frame body 10. The frame body 10 is removed from the mounting table 20 by lifting the frame body 10 upward. The frame 10 is attracted and fixed to the mounting table 20 via a magnet 22, and the locking member 15 can be securely held between the locking member 15 of the frame 10 and the mounting table 20. Since the holding space 27 that can be held is provided, the frame body 10 can be removed from the mounting table 20 at a stretch only by a series of operations such as holding the locking member 15 and lifting it upward. Removal work can be performed easily.

  Thereafter, the frame body 10 having a thickness corresponding to the thickness of the substrate 50 to be screen-printed is placed on the mounting table 20 in the same manner as described above, whereby the frame body 10 replacement operation is completed.

  As described above, the substrate support 1 according to this embodiment is configured so that the frame body 10 forming the accommodation space 12 for accommodating the substrate 50 is placed on the upper surface 25 of the placement table 20 according to the thickness of the substrate 50. Since it is configured so that it can be appropriately selected, it is possible to perform screen printing on the substrate 50 having various plate thicknesses by replacing only the frame body 10 without replacing the mounting table 20 which is a heavy object. Thus, the workability of screen printing can be improved.

  Further, the substrate support 1 according to the present embodiment is configured so that the frame body 10 and the mounting table 20 that form the accommodation space 12 that accommodates the substrate 50 can be separated. Only the frame 10 having a corresponding thickness can be stored, and the storage space can be easily secured.

  As mentioned above, although one Embodiment of this invention was described, the specific aspect of this invention is not limited to the said embodiment. For example, a columnar magnet is employed as the magnet 22 embedded in the mounting table 20, but a rectangular parallelepiped or cubic magnet may be employed, for example.

  Moreover, in this embodiment, although the permanent magnet is employ | adopted as the magnet 22, you may employ | adopt an electromagnet, for example instead of a permanent magnet. When an electromagnet is employed as the magnet 22, it is possible to adjust the magnetic force of the electromagnet by changing the value of the current flowing through the electromagnet, and the frame body 10 can be attracted and fixed to the mounting table 20 with a desired magnetic force. . In addition, since the magnetic force of the electromagnet can be extinguished by setting the current value flowing through the electromagnet to 0, the influence of the magnetic force when the frame 10 is attached to the mounting table 20 or when the frame 10 is removed from the mounting table 20. You will not receive. As a result, the attachment work and the removal work of the frame body 10 can be easily performed.

  In this embodiment, the magnet 22 is embedded in the mounting table 20 so that the exposed surface of each magnet 22 and the upper surface 25 of the mounting table 20 are flush with each other. The configuration is not particularly limited as long as it can be fixed by adsorption. For example, as shown in FIG. 9, the magnet 22 may be embedded in the magnet mounting recess 21 so that the exposed surface 22 a of the magnet 22 sinks from the upper surface 25 of the mounting table 20. Furthermore, a configuration may be adopted in which the exposed surface of the magnet 22 embedded in this way is covered with a covering member 29 such as a metal plate or a synthetic resin as shown in FIG. Moreover, as shown in FIG. 11, you may employ | adopt the structure which attaches coating | coated members 29, such as a metal plate, to the upper surface 25 of the mounting base 20 with which the magnet 22 was embedded.

  Moreover, in this embodiment, although the magnet 22 is embedded and attached in the recessed part 21 for magnet attachment formed in the upper surface 25 of the mounting base 20, for example, as shown in FIG. It is also possible to adopt a configuration that is directly attached to the upper surface. In addition, when adopting such a configuration, the total thickness w2 of the frame main body 11 and the thickness of the magnet 22 is configured to be substantially the same as the thickness of the substrate 50.

  In the present embodiment, a plurality of columnar magnets 22 are provided at predetermined intervals along the mounting position of the frame body 10 in the upper part of the mounting table 20, but this configuration is particularly limited. For example, the following configuration may be adopted. That is, as shown in FIG. 13, a configuration in which a plate-like magnet 22 having substantially the same shape as the shape of the frame body 11 of the frame body 10 is attached to the upper portion of the mounting table 20 along the mounting position of the frame body 10. It may be adopted. When such a configuration is adopted, since the substantially entire area of the frame main body 11 of the frame body 10 is attracted and fixed to the upper surface 25 of the mounting table 20 by the magnet 22, the frame body 10 is securely attached to the upper surface 25 of the mounting table 20. Can be fixed.

  In the present embodiment, the magnet mounting recess 21 for mounting the magnet 22 is formed on the upper surface of the mounting table 20, and the magnet 22 is embedded in the magnet mounting recess 21. An air vent through hole 30 as shown in FIG. With such a configuration, when the magnet 22 is embedded in the magnet mounting recess 21, air in the magnet mounting recess 21 is pushed by the lower surface 22 b of the magnet 22 and is discharged to the outside through the through hole 30. The compressed air can be prevented from remaining between the bottom surface 21 a of the magnet mounting recess 21 and the lower surface 22 b of the magnet 22. As a result, in the embedding operation of the magnet 22 in the magnet mounting recess 21, the compressed residual air expands to press the lower surface 22 b of the magnet 22, and the magnet 22 floats with respect to the upper surface 25 of the mounting table 20. Can be prevented.

  Further, in the present embodiment, the plate-like locking member 15 is configured to be provided over the entire length of the side edge portion 11a of the frame body 11, but is not particularly limited to this configuration. As shown in FIG. 15 (corresponding to a side view seen from the direction of arrow A in FIG. 2), a plate-like locking member 15 may be provided on a part of the side edge portion 11a of the frame body 11. Even in such a configuration, since the locking member 15 contacts the side surface 24 of the mounting table 20 on the upstream side with respect to the squeegeeing direction S, the frame 10 is squeezed during printing by the squeegee 40. It is possible to reliably prevent the movement in the direction S.

  Moreover, in this embodiment, although the locking member 15 is comprised by the plate-shaped member, it is not specifically limited to this structure, For example, FIG. 16 (The side view seen from the arrow A direction of FIG. 2) The locking member 15 may be configured to have a comb-teeth shape as shown in FIG. Even in such a configuration, since the comb-like locking member 15 contacts the side surface 24 of the mounting table 20, it is ensured that the frame body 10 moves in the squeezing direction S during printing by the squeegee 40. Can be prevented.

  In the present embodiment, a notch 27 is provided in the side surface 24 of the mounting table 20 to form a gripping space 28 for gripping the locking member 15. For example, the cross section of FIG. As shown in the figure, the holding space 28 may be formed by providing a notch 27 in the lower end 16 of the locking member 15. Even with such a configuration, it is possible to insert the finger or the like into the gripping space 28 and grip the locking member 15, so that the frame body 10 can be easily detached from the mounting table 20.

  Further, in the present embodiment, as shown in the side view of FIG. 6, the gripping space portion 28 is formed by forming the rectangular cutout 27 on the side surface 24 of the mounting table 20. As shown in the side view of FIG. 18, the holding space 28 may be formed by forming an oval concave portion 31 on the side surface 24 of the mounting table 20.

  Further, in the present embodiment, as shown in the plan view of the mounting table 20 in FIG. 19, an extrusion hole 35 penetrating from the upper surface 25 to the lower surface of the mounting table 20 may be provided in the central portion of the mounting table 20. With such a configuration, when the substrate 50 held by the frame body 10 is taken out from the frame body 10, as shown in the schematic configuration cross-sectional view of FIG. Thus, the lower surface of the substrate 50 can be pressed by the pushing member 36 or the like, the substrate 50 can be easily taken out from the frame body 10, and workability when screen printing is performed on the substrate 50 is improved.

When such a configuration is adopted, an air inflow hole 37 penetrating from the upper surface 25 to the lower surface 26 of the mounting table 20 may be further provided in the mounting table 20 as shown in FIGS. 19 and 20. Thereby, when the lower surface of the substrate 50 is pressed by the extrusion member 36 through the extrusion hole 35 described above, air flows into the contact portion between the lower surface of the substrate 50 and the upper surface 25 of the mounting table 20 from the air inflow hole 37. Therefore, it becomes easy to remove the substrate 50 from the frame 10, and the workability when screen printing is performed on the substrate 50 is further improved.

It is a schematic structure sectional view of a substrate support concerning one embodiment of the present invention. It is a top view of the frame which constitutes the substrate support concerning one embodiment of the present invention. It is a side view of the frame seen from the arrow A direction of FIG. It is a side view of the frame seen from the arrow B direction of FIG. It is a top view of the mounting base which comprises the board | substrate support which concerns on one Embodiment of this invention. It is a side view of the mounting base shown in FIG. It is explanatory drawing explaining the method of performing screen printing using the board | substrate support tool which concerns on one Embodiment of this invention. It is explanatory drawing explaining the method to screen-print on a board | substrate using the board | substrate support tool which concerns on one Embodiment of this invention. It is a principal part expanded sectional view of the mounting base which comprises the board | substrate support which concerns on other embodiment of this invention. It is a principal part expanded sectional view of the mounting base which comprises the board | substrate support which concerns on other embodiment of this invention. It is a principal part expanded sectional view of the mounting base which comprises the board | substrate support which concerns on other embodiment of this invention. It is a schematic structure sectional view of a substrate support concerning other embodiments of the present invention. It is a top view of the mounting base which comprises the board | substrate support which concerns on other embodiment of this invention. It is sectional drawing of the mounting base which comprises the board | substrate support tool which concerns on other embodiment of this invention. It is a side view of the frame which comprises the board | substrate support tool which concerns on other embodiment of this invention. It is a side view of the frame which comprises the board | substrate support tool which concerns on other embodiment of this invention. It is a schematic structure sectional view of a substrate support concerning other embodiments of the present invention. It is a side view of the mounting base which comprises the board | substrate support tool which concerns on other embodiment of this invention. It is a top view of the mounting base which comprises the board | substrate support which concerns on other embodiment of this invention. It is a schematic structure sectional view of a substrate support concerning other embodiments of the present invention. It is a schematic structure sectional view explaining the method of performing screen printing on a substrate. It is a top view of FIG. It is schematic structure sectional drawing which shows the conventional board | substrate support tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Substrate support 10 Frame 11 Frame main body 15 Locking member 20 Mounting base 22 Magnet 24 Side surface 27 Notch 28 Gripping space 50 Substrate

Claims (4)

A substrate support for supporting a substrate on which screen printing is performed,
A mounting table, and a frame that forms an accommodation space for the substrate by mounting on the upper surface of the mounting table;
The upper part of the mounting table is provided with a magnet along the mounting position of the frame,
The frame body is formed of a magnetic material, and includes a locking member that contacts the side surface of the mounting table.
A substrate support in which a gripping space is formed between the locking member and the mounting table . The substrate support according to claim 1, wherein the magnet is embedded in the mounting table so as not to protrude from the upper surface of the mounting table. The substrate support according to claim 1, wherein the gripping space is formed by cutting a side surface of the mounting table. The substrate support according to any one of claims 1 to 3, wherein a magnet for attracting and fixing the locking member is provided on a side surface of the mounting table.

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