JP7447607B2 - screen printing equipment - Google Patents

Description

The present invention relates to a screen printing device.

2. Description of the Related Art Techniques are known in which various printing materials are patterned on the surface of a substrate using a screen printing device. For example, a screen printing device is used to form a solder pattern on the surface of a circuit board.

In recent years, due to the miniaturization of electronic components, circuit boards printed by such screen printing equipment are increasingly equipped with small components such as SMDs (Surface Mount Devices) of 0402 or smaller. . As a result, the size of the hole formed in the screen mask becomes smaller in accordance with the miniaturization of the member mounted on the printing medium.

As a result, the solder paste may be difficult to fill into the holes formed in the screen mask. Furthermore, when removing the screen mask from the printing material, it is difficult for the solder paste to come out from the holes formed in the screen mask, and some of the solder paste adheres to the screen mask, causing chips in the formed solder pattern. There is also a possibility.

On the other hand, Patent Document 1 discloses a screen printing apparatus in which a printing stage that receives a substrate to be printed, such as a substrate of an electronic component, and a vibration source that vibrates the substrate are integrated. The screen printing device uses vibration of a vibration source to remove gaps formed when solder paste fills holes formed in a screen mask.

Furthermore, Patent Document 2 discloses a system in which a support table that supports a substrate to be printed, such as a board of an electronic component, and a motor that moves the printing press stage up and down and apply minute vibrations to the substrate are integrated. A screen printing device is disclosed. The screen printing device makes it easier for the solder paste to come out from the holes formed in the screen mask by the shearing force caused by the vibration of the vibration source.

JP2013-067043A Japanese Patent Application Publication No. 6-320708

With the demand for high-density packaging, electronic components are increasingly being mounted on both sides of a board. In such cases, it is necessary to perform screen printing on both sides of the printing material. To mount electronic components on both sides of a board, first, a solder pattern is screen printed on one side (hereinafter referred to as the "first side") of the substrate, and then the electronic components are mounted. Next, a solder pattern is screen printed on the surface opposite to the first surface (hereinafter referred to as "second surface"), and then electronic components are attached.

The inventor of the present invention has discovered that in printing a printing medium on which members such as electronic components are mounted on both sides as described above, in screen printing apparatuses such as Patent Documents 1 and 2, when printing the second side, the first side We have discovered a problem in that the printing material cannot be placed on the printing stage due to contact between the protrusion formed by electronic components mounted on the printing stage and the printing stage, resulting in poor printing.

One aspect of the present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a printing medium in which a protrusion is formed on the surface (first surface) of the printing medium that contacts the printing stage. An object of the present invention is to provide a screen printing device that can print well.

The present invention adopts the following configuration in order to solve the above-mentioned problems. That is, a screen printing device according to one aspect of the present disclosure is a screen printing device that forms a printing material in a desired pattern defined by a screen mask on the top surface of a printing material, and the printing material is placed on the top surface. a stage on which the placement plate is placed, a stage on which the placement plate is fixed, and a vibration generating unit that generates vibrations that are transmitted to the printing material, and the placement plate includes a stage on which the printing material is placed. A recess or hole is formed for accommodating the protrusion on the lower surface of.

With this configuration, the protrusion on the lower surface of the printing material can be accommodated in the recess or hole formed in the mounting plate. As a result, even if the printing material has a protruding portion formed thereon, the printing material can be placed in a state in which the surface of the printing material on which the protruding portion is formed is in close contact with the mounting plate. As a result, vibrations can be stably transmitted to the printed material, which improves the shearing properties of the solder paste against the inner walls of the holes formed in the screen mask, making it easier for the solder paste to escape from the holes formed in the screen mask. .

As described above, even when printing on a printing material on which protrusions are formed, the screen printing apparatus can perform good printing on the printing material. The mounting plate can be shaped to suit the shape, position, number, etc. of the protrusions on the bottom surface of the printing material, and since it is constructed as a separate member from the stage, it can accommodate a variety of bottom surface shapes of the printing material. You can then print.

In the screen printing apparatus according to the one aspect, the placement plate may be removably fixed to the stage. According to this configuration, the screen printing apparatus can easily be changed to a mounting plate that corresponds to the shape, position, number, etc. of the protrusions on the lower surface of the printing material. This allows the screen printing device to print on substrates with various protrusions with one screen printing device by using a mounting plate that corresponds to the shape, position, and number of protrusions on the bottom surface of the substrate. It becomes easier to deal with.

When the mounting plate is removably fixed to the stage, it may be fixed using screws, magnets, or the like. Furthermore, by adjusting the shapes of the mounting plate and the stage, the mounting plate may be fixed by being fitted into the stage.

In the screen printing apparatus according to the one aspect, the vibration generator may be connected to the stage so as to vibrate the stage. According to this configuration, the screen printing device can vibrate the printing material through the stage. Thereby, the screen printing apparatus can freely arrange the vibration generating section.

In the screen printing device according to the one aspect, a hollow portion may be provided in a part of the upper surface of the stage. According to this configuration, even if the height of the protrusion is longer than the thickness of the mounting plate, the protrusion can be placed inside the cavity formed in a part of the upper surface of the stage, so that the substrate can be printed. can be placed on the mounting plate. Thereby, the screen printing apparatus can perform good printing on the printing material even if the printing material has a protruding portion higher than the thickness of the mounting plate.

The screen printing apparatus according to the above aspect may further include a pedestal on which the stage is installed, and a damper may be provided between the stage and the pedestal. According to this configuration, by further providing a damper between the stage and the pedestal, it is possible to reduce transmission of vibrations generated in the vibration generating section to the pedestal.

Thereby, the intensity of vibrations transmitted to the printing material can be increased. As a result, the screen printing device transmits sufficient vibration to the printing material when removing the screen mask, making it easier for the printing material to pass through the holes in the screen mask, and making it possible to perform good printing on the printing material. can.

The screen printing apparatus according to the one aspect further includes a vibration transmission member that contacts the lower surface of the printing material, and the vibration generation section is connected to the vibration transmission member so as to vibrate the vibration transmission member, and the vibration generation section is connected to the vibration transmission member so as to vibrate the vibration transmission member. The writing plate may be formed with a through portion through which the vibration transmission member passes.

According to this configuration, the vibration generated in the vibration generator can be directly transmitted to the printing material via the vibration transmission member. This can prevent vibrations generated in the vibration generator from being attenuated by being transmitted through the stage. Although the penetrating portion may be formed separately from the above-mentioned opening, a penetrating portion having a function as an opening may be formed.

In the screen printing device according to the one aspect, the printing material may be a solder paste. According to this configuration, wiring can be formed on the substrate and members can be arranged on the substrate.

According to one aspect of the present invention, it is possible to provide a screen printing device that can print well even when a protrusion exists on the surface of the printing material that contacts the printing stage or the like.

FIG. 1 is a schematic cross-sectional view showing the main configuration of a screen printing apparatus according to an embodiment. FIG. 2 is a perspective view schematically illustrating an example of a mounting plate of the screen printing apparatus according to the embodiment. FIG. 3 is a schematic cross-sectional view showing the main configuration of the screen printing apparatus 2 according to the embodiment. FIG. 4 is a schematic cross-sectional view showing the main part configuration of the screen printing apparatus 3 according to the embodiment. FIG. 5 is a schematic cross-sectional view showing the main configuration of the screen printing apparatus 4 according to the embodiment. FIG. 6 is a schematic cross-sectional view showing the main part configuration of the screen printing apparatus 5 according to the embodiment. FIG. 7 is a schematic cross-sectional view showing the main configuration of the screen printing apparatus 6 according to the embodiment. FIG. 8 is a schematic cross-sectional view showing the main configuration of the screen printing apparatus 7 according to the embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment (hereinafter also referred to as "this embodiment") according to one aspect of the present invention will be described below based on the drawings. The shapes and dimensions (length, width, height, etc.) of the structures shown in each drawing in this application do not necessarily reflect the actual shapes and dimensions, and may be used for clarity, simplification, or display of details in the drawings. Changes have been made accordingly.

§1 Application Example An application example of the screen printing apparatus according to the present invention will be described with reference to FIG. FIG. 1 is a schematic cross-sectional view showing the main configuration of a screen printing apparatus according to this embodiment.

The screen printing apparatus 1 includes a table section 10, a vibration generating section 20, a squeegee 60, and a pedestal 70. The screen printing device 1 is a device that transfers a printing material 50 onto a printing material 30 by sliding a squeegee 60 on the printing material 30 using a screen mask 40 in which a screen mask hole 41 of a desired shape is formed. be.

The table section 10 includes a stage 11, a mounting plate 12, and a fixing section 14. The stage 11 transmits vibrations generated by the vibration generator 20 to the printing material 30. The mounting plate 12 is formed with an opening 13 that is a recess or a hole. The opening 13 accommodates a protrusion 31 formed on the substrate 30 . The fixing part 14 detachably fixes the stage 11 and the mounting plate 12.

The vibration generator 20 is a device that generates vibrations. The vibration generated in the vibration generator 20 is first transmitted from the vibration generator 20 to the stage 11, then from the stage 11 to the printing material 30, then from the printing material 30 to the screen mask 40, and finally to the screen. from the mask 40 to the printing material 50. By transmitting the vibrations in this manner, the vibrations generated in the vibration generator 20 vibrate the printing material 50 filled in the screen mask holes 41. The squeegee 60 fills the screen mask holes 41 with the printing material 50 by sliding on the upper surface of the screen mask 40 . The pedestal 70 fixes the table section 10.

The printing material 30 may have a protrusion 31 formed on the side of the printing material 30 that faces the table section 10 . The screen mask 40 is formed with screen mask holes 41 through which the printing material 50 is transferred to the printing material 30 . Screen mask holes 41 are formed in a desired pattern. The printing material 50 is filled into the screen mask holes 41 and transferred to the printing material 30 .

With this configuration, the protrusion 31 on the lower surface of the printing medium 30 can be accommodated in the opening 13 formed in the mounting plate 12 . As a result, even if the printing material 30 is formed with the protrusion 31, it can be installed with the surface of the printing material 30 facing the mounting plate 12 in close contact with the mounting plate 12. As a result, vibrations can be stably transmitted to the printing material 30, so that the shearability of the printing material 50 against the inner wall of the screen mask hole 41 can be improved. As described above, even when printing on the printing material 30 on which the protruding portion 31 is formed, the screen printing apparatus 1 can perform good printing on the printing material.

Further, in this configuration, the mounting plate 12 can be processed into a shape according to the shape, position, number, etc. of the protruding portions 31 on the lower surface of the printing medium 30, and is configured as a separate member from the stage 11. , it becomes possible to perform printing according to the bottom surface shape of various printing substrates 30.

§2 Configuration example <Screen printing device>
Next, an example of the configuration of the screen printing apparatus 1 according to the present embodiment will be described using FIGS. 1 and 2. FIG. 2 is a perspective view schematically illustrating an example of the mounting plate 12 in the screen printing apparatus 1 according to the present embodiment.

As shown in FIG. 1, the screen printing apparatus 1 according to the present embodiment includes a table section 10, a vibration generating section 20, a squeegee 60, and a pedestal 70. The table section 10 includes a stage 11, a mounting plate 12, and a fixing section 14.

The stage 11 and the mounting plate 12, the stage 11 serving as a base and the mounting plate 12 serving as an upper plate placed on the upper surface of the stage 11, constitute a lower receiving unit that supports the printing material from below. The mounting plate 12 is configured as a separate member from the stage 11 and is separable from the stage 11. As the mounting plate 12, for example, a thin metal plate having a thickness of 1 mm to 3 mm can be used. The mounting plate 12 includes an opening 13 for accommodating the protrusion 31 .

Although FIG. 2 shows an example in which the opening 13 is formed of only a hole that penetrates the mounting plate 12 over substantially the entire surface of the mounting plate 12, the opening 13 is not limited to this. For example, the opening 13 may include a hole and a recess that is a recess formed in the mounting plate 12. Furthermore, the opening 13 may be composed only of a recess.

The fixing part 14 detachably fixes the stage 11 and the mounting plate 12. In FIGS. 1 and 2, the fixing part 14 removably fixes the stage 11 and the mounting plate 12 by fixing the four corners of the stage 11 and the mounting plate 12 with screws, but the fixing part 14 is not limited to this. It is not something that will be done. For example, the stage 11 and the mounting plate 12 may be removably fixed by using a magnet as the fixing part 14 instead of a screw.

Furthermore, as long as the mounting plate 12 can be fixed to the stage 11, the shape, position, and number of the fixing parts 14 may be changed without being limited to the four corners. Furthermore, by forming a recess (not shown) in which the mounting plate 12 fits in the stage 11 without providing the fixing part 14, and fitting the mounting plate 12 in the recess, the stage 11 and the mounting plate 12 can be and may be removably fixed.

The vibration generator 20 may be any device that generates vibrations. The vibrations generated in the vibration generator 20 may be generated when the screen mask holes 41 are filled with the printing material 50, or when the screen mask 40 is removed after the screen mask holes 41 are filled with the printing material 50. In a specific example of this embodiment, an ultrasonic generator that generates vibrations of 40 KHz is used as the vibration generator 20.

The squeegee 60 is an example of a sliding member, and slides on the screen mask 40. The squeegee 60 fills the screen mask holes 41 with the printing material 50. The table portion 10 is installed on the pedestal 70 .

<Print material>
The printing substrate 30 can be a variety of screen printing objects such as a substrate or paper, and examples of the substrate include a glass epoxy resin substrate, a flexible substrate, a ceramic substrate, a paper ferrule substrate, a metal-based substrate, and the like. In the following, a case where a glass epoxy resin substrate is used as the printing material 30 will be described as an example.

The printing material 30 is placed in close contact with the placement plate 12 . Moreover, the printing material 30 is placed so that the screen mask 40 is in close contact with it. Printing may be performed on one side of the printing medium 30 in order to mount a member, and in order to mount a member on both sides of the printing medium 30, printing is first performed on one side of the printing medium 30 to mount the member. After mounting, printing may be performed on the surface opposite to the surface on which the member is mounted.

When mounting members etc. on both sides of the printing material 30 as described above, in the printing material 30 with the members etc. mounted on one side, there is a protrusion such as a member such as an SMD or a wiring etc. on the side opposite to the surface to be printed. 31. The protrusion 31 may be a protrusion formed on the printing material 30 for design or function.

<Screen mask>
The screen mask 40 is formed with screen mask holes 41 for transferring a printing material 50 (described later) onto the printing material 30. As a specific structure of the screen mask 40 in this embodiment, a processed SUS plate serving as a plate can be used. Screen mask holes 41 are formed in a desired pattern.

<Printing materials>
As a specific structure of the printing material 50 in this embodiment, a solder paste can be used, but a conductive paste or an adhesive may also be used. The solder paste may be a tin-silver-copper-based solder paste, or a solder paste based on a single metal or a mixture of any type of metal.

<Action, effect>
As described above, the screen printing apparatus 1 according to the present embodiment can accommodate the protrusion 31 formed on the printing material 30 in the opening 13. As a result, even if the printing material 30 has the protrusion 31 formed thereon, the printing material 30 is placed on the table section 10 such that the surface of the printing material 30 on which the protrusion 31 is formed is in close contact with the mounting plate 12. The printing medium 30 can be placed substantially parallel to the mounting plate 12. As a result, the surface of the printing material 30 opposite to the surface on which the protruding portion 31 is formed becomes flat, so that the printing material 30 and the screen mask 40 can be brought into close contact with each other. As a result, the screen printing device 1 can stably print on the printing material 30.

Furthermore, in the screen printing apparatus 1 according to the present embodiment, since the mounting plate 12 is removably fixed to the stage 11, the mounting plate 12 can be mounted according to the shape, position, number, etc. of the protrusions 31 on the lower surface of the printing medium 30. It becomes easy to change to the placing plate 12.

Furthermore, in the screen printing apparatus 1 according to this embodiment, the vibration generating section 20 is connected to the stage 11 so as to vibrate the stage 11, so that the vibration generating section can be freely arranged.

Furthermore, the screen printing apparatus 1 according to this embodiment uses solder paste as a printing material, so that wiring can be formed on the board and members can be arranged on the board.

Furthermore, the screen printing apparatus 1 according to the present embodiment is suitable for mounting components designed to require a small soldering area, such as miniaturized components and narrow pitch components such as BGA (Ball grid array). Even when printing, printing can be performed without reducing the thickness of the screen mask, and the thickness of the solder can be ensured.

In other words, the screen printing apparatus 1 according to the present embodiment can realize high aspect ratio printing in which the aspect ratio of the printing material 50 transferred to the printing material 30 is as high as 2.7. Thereby, the screen printing apparatus 1 according to the present embodiment can reduce the occurrence of cracks due to lack of printing material 50 in the solder joints.

Note that the aspect ratio here refers to the surface area of the screen mask that forms the hole formed in the screen mask relative to the value of the opening area (hereinafter referred to as "bottom area") of the hole formed in the screen mask. is the value of the area (hereinafter referred to as "lateral area") (value of base area/value of lateral area). In addition, if the hole formed in the screen mask is columnar, such as a cylinder, the value of the lateral area is calculated by (thickness of the screen mask) x (periphery of the opening formed in the screen mask). It is the value of area. Note that the columnar shape is not limited to a cylindrical shape, and may be a triangular prism, a quadrangular prism, a polygonal prism, or a column with an irregular bottom shape.

The specific size of the screen mask hole with the aspect ratio value of 2.7 is that the diameter of the opening is 180 μm and the thickness of the screen mask is 120 μm.

Furthermore, when printing with a high aspect ratio to mount components designed to have a small soldering area, with the conventional technology, it is difficult for the printing material to come out through the holes formed in the screen mask when the screen mask is removed. For this reason, in the prior art, high aspect ratio printing is performed by overlapping patterns (laminating printing materials).

On the other hand, since the screen printing apparatus 1 according to the present embodiment can realize printing with a high aspect ratio, it can print on the printing material 30 with a desired thickness by using the screen mask 40 with a desired thickness. As a result, the screen printing apparatus 1 according to the present embodiment can print multiple times using screen masks with different thicknesses or connect multiple printing apparatuses in order to transfer the printing material 50 of a desired thickness. It becomes unnecessary to overlap patterns by, for example, printing the patterns separately.

<Modification 1 of the embodiment>
Next, using FIG. 3, a screen printing apparatus 2 according to Modification 1 will be described with reference to the drawings. FIG. 3 is a schematic cross-sectional view showing the main part configuration of the screen printing apparatus 2 according to the first modification.

As shown in FIG. 3, in the screen printing apparatus 2, the vibration generating section 20 is arranged in a direction perpendicular to the vertical direction of the stage 11a ( The difference is that the stage 11a is placed in contact with the side surface of the stage 11a. The other configurations of the screen printing device 2 according to Modification 1 are the same as the configuration of the screen printing device 1, so the description thereof will be omitted.

Although FIG. 3 illustrates a case in which one vibration generating section 20 is arranged on the right side surface of the stage 11a as viewed from the paper, the arrangement of the vibration generating section 20 is not limited to this. The vibration generator 20 may be arranged on the left side surface of the stage 11a as viewed in the drawing. Furthermore, the vibration generator 20 may be placed on either side of the stage 11a in the depth direction as viewed from the drawing. Furthermore, two or more vibration generators 20 may be arranged on the side surface of the stage 11a.

By arranging the vibration generator 20 in a direction perpendicular to the vertical direction of the stage 11a as described above, the degree of freedom in arranging the vibration generator in the screen printing apparatus can be improved.

<Modification 2 of embodiment>
Next, screen printing devices 3 to 5 according to modification example 2 will be described using FIGS. 4 to 6. FIG. 4 is a schematic cross-sectional view showing the main part configuration of a screen printing apparatus 3 according to a second modification. FIG. 5 is a schematic cross-sectional view showing the main part configuration of the screen printing device 4 according to Modification 2. As shown in FIG. FIG. 6 is a schematic cross-sectional view showing the main part configuration of the screen printing device 5 according to the second modification.

As shown in FIGS. 4 to 6, the screen printing apparatuses 3 to 5 differ from the configuration of the screen printing apparatus 1 according to the above-described embodiment in that a cavity is formed in the stage. The other configurations of the screen printing apparatus 3 to screen printing apparatus 5 according to Modification 2 are the same as the configuration of the screen printing apparatus 1, and therefore the description thereof will be omitted.

FIG. 4 shows a screen printing apparatus 3 including a stage 11b in which a first cavity 80 is formed vertically upward near the center of the stage as a table part 10b. In FIG. 5, a screen printing apparatus 4 includes a stage 11c in which a second cavity 81 is formed vertically upward near the center of the stage and a third cavity 82 is formed vertically downward near the center of the stage as the table part 10c. shows. FIG. 6 shows a screen printing apparatus 5 including a stage 11d in which a fourth cavity 83 is formed vertically downward near the center of the stage as a table part 10d.

By forming the cavity inside the stage as described above, the stage becomes thinner, and it is possible to reduce the attenuation of vibrations generated by the vibration generating section 20 when being transmitted through the stage. Thereby, the vibration transmitted to the printing material 30 can be strengthened.

Furthermore, the screen printing apparatus 3 to screen printing apparatus 5 can uniformly transmit the vibrations generated in the vibration generating section 20 to the printing medium 30 by filling the first cavity part 80 to the fourth cavity part 83 with liquid. .

Furthermore, the screen printing apparatus 3 to screen printing apparatus 5 can arrange the vibration generating part 20 inside the first cavity part 80 to the fourth cavity part 83. Thereby, the screen printing apparatuses 3 to 5 can reduce the size of the screen printing apparatuses 3 to 5 by reducing the space in which the vibration generating section 20 is formed.

Furthermore, as shown in FIGS. 4 and 5, the screen printing apparatus 3 and the screen printing apparatus 4 are different from the structure of the screen printing apparatus 1 according to the above-described embodiment in that a hollow part is provided in a part of the upper part of the stage. It is further different in that it is

As shown in the screen printing apparatus 3 and the screen printing apparatus 4, by providing a hollow part in a part of the upper part of the stage, even if the height of the protrusion part 31 is longer than the thickness of the mounting plate 12, the protrusion can be prevented. The portion 31 can be stored in the cavity. As a result, the screen printing apparatus 3 and the screen printing apparatus 4 can efficiently place the printing material 30 on the mounting plate 12 even if the printing material 30 has a longer member than the thickness of the mounting plate 12 as the protruding part 31. Can be printed.

<Variation 3 of the embodiment>
Next, a screen printing device 6 according to modification 3 will be described using FIG. 7. FIG. 7 is a schematic cross-sectional view showing the main part configuration of a screen printing device 6 according to Modification Example 3. As shown in FIG. 7, the screen printing device 6 differs from the configuration of the screen printing device 1 according to the above-described embodiment in that it further includes a damper structure 15 as the table portion 10e.

The damper structure 15 is formed between the table portion 10e and the pedestal 70. The damper structure 15 may be constituted by a spring portion 16, for example, as shown in FIG. Further, the damper structure 15 may be a member made of an elastic body such as rubber instead of the spring portion 16. The rest of the configuration of the screen printing device 6 according to Modification 3 is the same as the configuration of the screen printing device 1, so a description thereof will be omitted.

As shown in the screen printing device 6, the table section 10e includes a damper structure 15 between the table section 10e and the pedestal 70, so that vibrations generated in the vibration generating section 20 are transmitted to the pedestal 70. It can be suppressed. Thereby, the screen printing device 6 can efficiently transmit vibrations to the printing material 30.

<Modification 4 of embodiment>
Next, using FIG. 8, a screen printing apparatus 7 according to modification example 4 will be described. FIG. 8 is a schematic cross-sectional view showing the main part configuration of a screen printing device 7 according to Modification Example 4. As shown in FIG. As shown in FIG. 8, the screen printing device 7 further includes a vibration transmission member 21 that contacts the lower surface of the printing medium 30, in addition to the configuration of the screen printing device 1 according to the embodiment described above.

The vibration generator 20 is connected to the vibration transmission member 21 so as to vibrate the vibration transmission member 21. The mounting plate 12 is different in that a through portion 17 is formed so that the vibration transmission member 21 can contact the printing medium 30. The other configurations of the screen printing device 7 according to Modification 4 are the same as the configuration of the screen printing device 1, so the description thereof will be omitted.

As shown in the screen printing device 7, the vibration generated in the vibration generating unit 20 is transmitted to the printing medium 30 by providing a vibration transmission member 21 that can directly transmit the vibration generated in the vibration generating unit 20 to the printing medium 30. It is possible to prevent the vibration transmitted to the stage 11f from being attenuated. Thereby, the screen printing device 7 can efficiently transmit vibrations to the printing material 30.

Further, in the screen printing device 7 according to the fourth modification, a case is shown in which the penetration part 17 is formed separately from the opening part 13, but the penetration part 17 may have a function as the opening part 13.

1, 2, 3, 4, 5, 6, 7 Screen printing device 10, 10b, 10c, 10d, 10e Table section 11, 11a, 11b, 11c, 11d, 11f Stage 12 Mounting plate 13 Opening section 14 Fixing section 15 Damper structure 16 Spring portion 17 Penetrating portion 20 Vibration generating portion 21 Vibration transmitting member 30 Printed material 31 Projecting portion 40 Screen mask 41 Screen mask hole 50 Printing material 60 Squeegee 70 Frame 80 First cavity 81 Second cavity 82 Third cavity Part 83 Fourth cavity part

Claims (5)

A screen printing device that forms a printing material in a desired pattern defined by a screen mask on the upper surface of a substrate, the screen printing device comprising:
a mounting plate on which the printing medium is placed;
a stage on which the mounting plate is fixed;
a vibration generator that generates vibrations that are transmitted to the printing substrate;
A pedestal on which the stage is installed,
The vibration generator is connected to the stage so as to vibrate the stage,
A recess or a hole is formed in the placement plate for accommodating a protrusion on the lower surface of the printing material ,
A screen printing apparatus , wherein a damper is provided between the stage and the pedestal . The screen printing apparatus according to claim 1 , wherein a hollow portion is provided in a part of the upper surface of the stage. A screen printing device that forms a printing material in a desired pattern defined by a screen mask on the upper surface of a substrate, the screen printing device comprising:
a mounting plate on which the printing medium is placed;
a stage on which the mounting plate is fixed;
a vibration generator that generates vibrations that are transmitted to the printing substrate;
a vibration transmission member that contacts the lower surface of the printing target,
A recess or a hole is formed in the placement plate for accommodating a protrusion on the lower surface of the printing material,
The vibration generator is connected to the vibration transmission member so as to vibrate the vibration transmission member,
A screen printing apparatus, wherein the mounting plate has a through portion formed therein through which the vibration transmission member passes. The screen printing apparatus according to any one of claims 1 to 3 , wherein the placing plate is removably fixed to the stage. The screen printing device according to any one of claims 1 to 4 , wherein the printing material is a solder paste.

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