TW202012194A - Screen printing apparatus and screen printing method - Google Patents

Abstract

The present invention comprises a holder (20), a slide mechanism (30) that slides the holder, a squeegee arm (40) that has one end and another end, a squeegee unit (50) that is fixed to the one end of the squeegee arm and has a squeegee, a swing mechanism (70) which is arranged between the other end of the squeegee arm and the holder and in which the squeegee arm is attached so as to be swingable with respect to the holder, and a swing control unit (80) that controls a swing of the squeegee arm by the swing mechanism.

Description

Screen printing device and screen printing method

The invention relates to a screen printing device and a screen printing method.

In the past, there have been screen printing devices that print curved surfaces.

[Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2017-222162

The conventional screen printing device for printing curved surfaces has a complicated structure and a large number of parts, so the device is relatively large.

The object of the present invention is to provide a screen printing device with a simple structure and a small size.

The screen printing apparatus of the present invention is characterized by comprising: a holder; a sliding mechanism that slides the holder; a squeegee arm having one end and the other end; a squeegee unit fixed to the squeegee arm The one end has a scraper; a swing mechanism is disposed between the other end of the scraper arm and the holder, and the scraper arm is mounted so as to be swingable relative to the holder; and a swing control unit , Which controls the swinging of the scraper arm by the swinging mechanism.

According to the present invention, since the squeegee unit is fixed by the squeegee arm, the structure of the screen printing device becomes simple, and the screen printing device can be miniaturized.

20‧‧‧ retainer

21‧‧‧Backboard

22‧‧‧ Lifting mechanism

23‧‧‧Horizontal

24‧‧‧Vertical

25‧‧‧Top board

26‧‧‧Linear guide

27‧‧‧Bridge

28、793‧‧‧Cylinder

29‧‧‧Linear mechanism

30‧‧‧sliding mechanism

31‧‧‧Belt

32‧‧‧Controller

33‧‧‧axis

34‧‧‧ Linear Motion Department

35‧‧‧Sensor

36‧‧‧Belt fixing part

40‧‧‧Scraper arm

41‧‧‧ Motherboard

42‧‧‧Reinforcement board

43‧‧‧ one end

44‧‧‧The other end

50‧‧‧Scraper unit

51‧‧‧Scraper

52‧‧‧Pressure mechanism

70‧‧‧ Swing mechanism

71‧‧‧Fixed board

72‧‧‧swing plate

73‧‧‧Cam

74‧‧‧cam follower

75‧‧‧Ball bearing

79‧‧‧Swing fixed part

80‧‧‧swing control department

81‧‧‧Guide

82‧‧‧Guide roller

83‧‧‧Guide mounting part

90‧‧‧Frame

91‧‧‧ Screen printing plate

92‧‧‧Web version

93‧‧‧ Plate Installation Department

98‧‧‧platform

99‧‧‧Workpiece

100‧‧‧ Screen printing device

140‧‧‧scraper arm

141‧‧‧L-shaped protrusion

150‧‧‧Scraper unit

151‧‧‧Scraper

221, 521‧‧‧Fixed Department

222‧‧‧Mobile board

522‧‧‧Mobile Department

731‧‧‧up cam

732‧‧‧ Lower cam

741‧‧‧Up cam follower

742‧‧‧ Lower cam follower

791‧‧‧hole

792‧‧‧pin

O‧‧‧Central axis

S‧‧‧Front end

FIG. 1 is a plan view of a screen printing apparatus 100 according to Embodiment 1. FIG.

FIG. 2 is a front view of the screen printing apparatus 100 as viewed from A-A of the screen printing apparatus 100 of FIG. 1.

FIG. 3 is a perspective view of the holder 20 viewed from B-B of the screen printing apparatus 100 of FIG. 1.

4 is a plan view of the holder 20 and the swing mechanism 70 of the screen printing apparatus 100.

5 is a plan view of the sliding mechanism 30.

6 is a side view viewed from E-E of the sliding mechanism 30 of FIG. 5.

7 is a side view of the holder 20, the squeegee arm 40, and the squeegee unit 50 as viewed from C-C of the screen printing apparatus 100 of FIG.

8 is a third view of the scraper arm 40 and the scraper unit 50.

9(a) to (c) are explanatory views of the swing mechanism 70.

10(a) to (c) are explanatory views of the swing control unit 80.

FIG. 11 is a side view viewed from D-D of the screen printing apparatus 100 of FIG. 1.

FIG. 12 is a diagram showing the swing mechanism 70 of the screen printing apparatus 100 of the second embodiment.

FIG. 13 is a diagram showing the swing mechanism 70 of the screen printing apparatus 100 according to the third embodiment.

In the description of the following implementation forms, the directions such as "upper", "lower", "left", "right", "front", "rear", "front", and "back" are marked for the convenience of explanation. It does not limit the arrangement or orientation of devices, appliances, parts, etc.

In the description of the following embodiments, the so-called "mechanism" refers to a machine, device or mechanism composed of a plurality of parts. In addition, the so-called "mechanism" refers to a mechanical structure, mechanical device, or mechanical element constructed for the purpose of providing one purpose.

Embodiment 1.

FIG. 1 is a plan view of a screen printing apparatus 100.

FIG. 2 is a front view of the screen printing apparatus 100 as viewed from A-A of the screen printing apparatus 100 of FIG. 1.

In FIG. 1, X represents the left-right direction, and Y represents the front-rear direction.

The printing direction of the screen printing apparatus 100 is the left direction in FIG. 1.

In FIG. 2, Z represents the up-down direction.

<<<Configuration of Screen Printing Device 100>>>

The screen printing apparatus 100 includes a holder 20 and a slide mechanism 30 that slides the holder 20 to the left and right.

The screen printing apparatus 100 has a squeegee arm 40 and a squeegee unit 50.

The screen printing apparatus 100 has a swing mechanism 70 between the holder 20 and the squeegee arm 40.

The screen printing apparatus 100 has a swing control section 80 that controls the swing of the scraper arm 40 and the scraper unit 50.

The screen printing apparatus 100 has a doctor arm 140 and a doctor unit 150.

The screen printing apparatus 100 has a frame 90.

<<<Structure of Frame 90>>>

The frame 90 fixes each part and each mechanism of the screen printing apparatus 100.

The frame 90 has a printing plate mounting portion 93 that fixes the screen printing plate 91.

The screen printing plate 91 has a screen printing pattern 92 formed with a printed pattern.

The frame 90 has a platform 98 on which a curved workpiece 99 is placed.

<<<Description of Holder 20>>>

3 and 4, the previous part of the holder 20 will be described.

The holder 20 has a back plate 21.

The back plate 21 is a rectangular plate.

The back plate 21 fixes the lifting mechanism 22 and the linear mechanism 29.

<<Lifting mechanism 22>>

The holder 20 has a lifting mechanism 22.

The lifting mechanism 22 moves the swing mechanism 70, the squeegee arm 40, and the squeegee unit 50 up and down.

The lifting mechanism 22 has a fixed portion 221 and a moving plate 222.

The fixing portion 221 is fixed to the back plate 21.

The moving plate 222 can move up and down relative to the fixed portion 221.

The lifting mechanism 22 can be realized by an air sliding platform or other sliding platforms.

The lifting mechanism 22 has a swing mechanism 70 fixed to the front surface.

<<Linear mechanism 29>>

The holder 20 has a linear mechanism 29.

The linear mechanism 29 moves the doctor arm 140 and the doctor unit 150 upward and downward.

The linear mechanism 29 has a linear guide 26, a bridge 27, and a barrel 28.

The cylinder 28 is fixed to the back plate 21.

The linear guides 26 are located on both sides of the barrel 28 and are fixed to the back plate 21.

The bridge 27 is U-shaped in a plan view, and is mounted on the linear guide 26 so as to cover the cylinder 28.

The bridge 27 has a scraper arm 140 fixed to the front surface.

The scraper arm 140 and the bridge 27 move up and down along the linear guide 26 by the cylinder 28.

The following part of the holder 20 will be described with reference to FIGS. 5 and 6.

The holder 20 has a horizontal plate 23 and a vertical plate 24.

The horizontal plate 23 is a rectangular plate.

The horizontal plate 23 is horizontally fixed to the upper and lower center of the rear surface of the back plate 21.

The vertical plate 24 is a rectangular plate with an inclined rear corner.

The vertical plate 24 is fixed to the back plate 21 and the horizontal plate 23.

The vertical plate 24 is vertically fixed to the left and right center portions of the rear surface of the back plate 21.

The vertical plate 24 is vertically fixed to the left and right center portions of the upper surface of the horizontal plate 23.

The back plate 21, the horizontal plate 23, and the vertical plate 24 are orthogonal to each other.

The holder 20 has a top plate 25.

The top plate 25 is fixed to the upper surface of the back plate 21.

The top plate 25 is a thin rectangular plate.

<<<Explanation of Sliding Mechanism 30>>>

5 and 6, the slide mechanism 30 will be described.

The sliding mechanism 30 is fixed to the frame 90.

The slide mechanism 30 slides the holder 20 to the left and right.

The sliding mechanism 30 has a belt 31 and a controller 32.

The belt 31 is a timing belt stretched in the left-right direction.

The controller 32 has a motor that rotates the belt 31 and controls the rotation of the belt 31.

The slide mechanism 30 has a shaft 33, a linear motion portion 34, and a belt fixing portion 36.

The shaft 33 is a cylindrical shaft arranged along the left-right direction.

The shaft 33 is located on both sides of the belt 31 and is parallel to the belt 31.

The linear motion part 34 is a part that slides on the shaft 33.

The linear motion portion 34 is fixed to the lower surface of the horizontal plate 23.

The belt fixing portion 36 fixes the belt 31 to the lower surface of the horizontal plate 23.

If the belt 31 moves in the left-right direction, the horizontal plate 23 also moves in the left-right direction.

With the shaft 33 and the linear motion portion 34, the horizontal plate 23 linearly moves in the left-right direction.

The slide mechanism 30 has two sensors 35 in the left-right direction.

The sensor 35 monitors the passage of the top plate 25.

The detection of the top plate 25 of the sensor 35 controls the movement of the holder 20 toward the left and right.

<<<Description of Scraper Arm 40>>>

7 and 8, the squeegee arm 40 will be described.

The squeegee arm 40 exists horizontally in the front-rear direction like an arm, and has one end 43 and the other end 44.

One end 43 of the squeegee arm 40 fixes the squeegee unit 50.

The other end 44 of the scraper arm 40 fixes the swing mechanism 70.

The squeegee arm 40 has a main board 41 and a reinforcing plate 42 orthogonal to the main board 41.

The main board 41 is a rectangular board.

The length of the main board 41 in the front-back direction, the length in the up-down direction, and the length in the left-right direction have the following relationship.

"Length in front and back direction> length in up and down direction> length in left and right direction"

The reinforcing plate 42 is a rectangular plate whose length in the front-rear direction is shorter than that of the main board 41.

The reinforcing plate 42 is fixed to the main board 41.

The reinforcing plate 42 is vertically fixed to the left surface of the main board 41.

The reinforcing plate 42 is fixed on the same side as the printing direction.

<<<Description of Scraper Unit 50>>>

7 and 8, the blade unit 50 will be described.

The squeegee unit 50 has a squeegee 51 at the lower end.

The squeegee 51 has an end S before contact with the screen 92 during printing.

The squeegee unit 50 has a pressing mechanism 52 that presses the squeegee 51 against the screen 92.

The pressing mechanism 52 has a fixed portion 221 and a moving plate 222.

The fixing portion 521 is fixed to the one end 43 of the scraper arm 40.

The moving part 522 can move up and down relative to the fixed part 521.

The pressurizing mechanism 52 can be realized by an air sliding platform or other sliding platforms.

<<<Description of Swing Mechanism 70>>>

The swing mechanism 70 will be described with reference to FIGS. 4, 7 and 9.

The swing mechanism 70 is disposed between the other end 44 of the squeegee arm 40 and the holder 20.

The swing mechanism 70 mounts the squeegee arm 40 so as to be swingable relative to the holder 20.

At positions corresponding to the front and rear of the swing mechanism 70, the scraper arm 40 and the elevating mechanism 22 are installed.

The swing mechanism 70 has a fixed plate 71 and a swing plate 72.

The fixed plate 71 and the swing plate 72 are rectangular plates.

The fixing plate 71 is fixed to the holder 20.

The fixed plate 71 is fixed to the moving plate 222 and moves up and down as the moving plate 222 moves up and down.

The swing plate 72 is fixed to the other end 44 of the scraper arm 40.

The swing mechanism 70 has a cam 73 and a cam follower 74.

<<Cam 73>>

Cam 73 is an arc-shaped part.

The material of the cam 73 is hardened steel, and is preferably quenched SK material (carbon tool steel) or quenched SKS material (alloy tool steel).

As shown in FIG. 9, the cam 73 has a central axis O.

The central axis O is located at a position coincident with the front end S of the squeegee 51 during printing.

The swing plate 72 fixes the end surface of the other end 44 of the scraper arm 40 at the upper right corner so that the center axis O coincides with the front end portion S.

The cam 73 has an upper cam 731 and a lower cam 732.

The upper cam 731 is fixed to the upper portion of the fixed plate 71.

The lower cam 732 is fixed to the lower part of the fixing plate 71.

The upper cam 731 has a V-shaped convex cross-sectional shape in the radial direction.

The lower cam 732 has a V-shaped convex cross-sectional shape in the radial direction.

The upper cam 731 and the lower cam 732 have a common central axis O.

The central angle passing through the center of the upper cam 731 and the central angle passing through the center of the lower cam 732 are the same angle N.

<<Cam Follower 74>>

The cam follower 74 clamps the cam 73 from above and below.

The material of the cam follower 74 is bearing steel, and is preferably SUJ material (high carbon chromium bearing steel).

There are a plurality of cam followers 74, and they are arranged above and below the cam 73.

The cam follower 74 has an upper cam follower 741 and a lower cam follower 742.

The two upper cam followers 741 are horizontally fixed to the upper part of the swing plate 72.

The two lower cam followers 742 are horizontally fixed to the lower part of the swing plate 72.

The upper cam follower 741 moves above the upper cam 731.

The lower cam follower 742 moves below the lower cam 732.

The cross-sectional shape of the upper cam follower 741 in the radial direction is a V-shaped groove.

The cross-sectional shape of the lower cam follower 742 in the radial direction is a V-shaped groove.

The upper cam follower 741 moves the groove shape into the convex shape of the upper cam 731.

The lower cam follower 742 is fitted into the convex shape of the lower cam 732 and moves.

As shown in FIG. 9, the upper cam follower 741 and the lower cam follower 742 are arranged on the same radius.

The central angle passing through the center of the two upper cam followers 741 and the central angle passing through the center of the two lower cam followers 742 are the same angle M.

The scraper arm 40 and the scraper unit 50 are supported by the swing mechanism 70 only.

The fixed plate 71 and the swing plate 72 of the swing mechanism 70 are combined only by the fitting of the cam 73 and the cam follower 74.

Therefore, the squeegee arm 40 and the squeegee unit 50 are held only by the engagement of the cam 73 of the fixed plate 71 and the cam follower 74 of the swing plate 72.

The fitting of the cam 73 and the cam follower 74 only needs to be strong enough to withstand the printing pressure.

The material of the cam 73 is hardened steel, and the material of the cam follower 74 is bearing steel. By using high-hardness steel, the fitting strength of the cam 73 and the cam follower 74 is improved.

The fixed plate 71 and the swing plate 72 are not separated by the convex shape of the cam 73 and the groove shape of the cam follower 74.

In order to prevent the fixed plate 71 and the swing plate 72 from being separated, the area of the area formed by the four central axes of the upper cam follower 741 and the lower cam follower 742 is increased. Specifically, the upper cam follower 741 and the lower cam follower 742 are arranged as follows.

(1) The upper cam 731 and the lower cam 732 are arranged above and below the center of the upper and lower sides of the fixing plate 71, and the two are separated as far as possible along the upper and lower sides.

(2) The two upper cam followers 741 are arranged on the left and right of the left and right center of the fixed plate 71, and the two are separated as far as possible along the left and right.

(3) The two lower cam followers 742 are arranged on the left and right of the left and right center of the fixed plate 71, and the two are separated as far as possible along the left and right.

(4) The upper cam follower 741 is disposed above the upper cam 731. The lower cam follower 742 is arranged below the lower cam 732.

However, since the position of the central axis O is the position of the front end S of the squeegee 51, it is preferable that no part is placed at the position of the central axis O. The height L2 of the center axis O and the center axis of the lower cam follower 742 is preferably more than one third of the height L1 of the swing plate 72.

<<Swing Fixed Part 79>>

The swing mechanism 70 has a swing fixing portion 79.

The swing fixing portion 79 prohibits the swing of the swing mechanism 70.

The swing fixing portion 79 has a hole 791, a pin 792, and a cylinder 793.

The hole 791 is formed in the hole of the fixing plate 71.

There is a tapered portion at the opening of the hole 791.

The hole 791 is provided above the cam 73.

The pin 792 is fixed to the swing plate 72.

The cylinder 793 is a column that moves forward and backward by the pin 792.

The cylinder 793 is inserted into the hole 791.

By the insertion of the cylinder 793 toward the hole 791, the swing plate 72 is fixed and cannot swing.

<<<Description of Swing Control Unit 80>>>

The swing control unit 80 will be described with reference to FIG. 10.

The swing control unit 80 controls the swing of the scraper arm 40 by the swing mechanism 70.

The swing control unit 80 is provided immediately behind the screen printing plate 91 in the front-rear direction.

The swing control portion 80 has a guide 81 and a guide mounting portion 83, and the guide 81 has a curved surface.

The guide 81 is an arc-shaped plate having the same curved surface as the workpiece 99.

The guide 81 is arranged above the screen printing plate 91.

The guide mounting portion 83 is fixed to the frame 90.

There are two guide mounting parts 83 on the left and right, and both ends of the guide 81 are fixed.

The swing control unit 80 has a plurality of guide rollers 82 that move along the guide.

There are two guide rollers 82 horizontally at least in the left-right direction.

The guide roller 82 is attached to the swing plate 72.

The guide roller 82 is installed on the front surfaces of both sides of the swing plate 72.

During printing, the two guide rollers 82 are in contact with the curved surface of the guide 81 to swing the fixed plate 71.

Since the position of the central axis O is the position of the front end S of the squeegee 51, it is preferable that no part is placed at the position of the central axis O. The guide 81 is disposed above the screen printing plate 91, and the height L3 of the center axis O and the center axis of the guide roller 82 is preferably more than one third of the height L1 of the swing plate 72.

<<<Description of Scraper Arm 140>>>

The scraper arm 140 will be described with reference to FIGS. 1 and 11.

The doctor arm 140 exists horizontally in the front-rear direction like an arm.

One end of the doctor arm 140 fixes the doctor unit 150.

The other end of the scraper arm 140 is fixed with a bridge 27.

The scraper arm 140 has an L-shaped protrusion 141 below the other end.

The L-shaped protrusion 141 moves up and down by the cylinder 28.

As the L-shaped protrusion 141 moves up and down, the blade unit 150 moves up and down.

<<<Description of Scraper Unit 150>>>

The doctor unit 150 is fixed to one end of the doctor arm 140.

The blade unit 150 has a blade 151.

<<<Description of overall composition>>>

The screen printing apparatus 100 mounts the squeegee unit 50 in a state where the squeegee unit 50 is cantilevered by the squeegee arm 40.

Before and after the squeegee arm 40, the squeegee unit 50 and the holder 20 are fixed at the same height, and the heights of the squeegee arm 40, the squeegee unit 50, and the holder 20 are the same or substantially the same.

The highest part of the screen printing apparatus 100 is not the frame 90, but the highest part of the squeegee arm 40, squeegee unit 50, and holder 20.

The squeegee unit 50 and the sliding mechanism 30 are installed at positions corresponding to the front and rear of the holder 20.

There is a squeegee unit 50 before the holder 20, and there is a sliding mechanism 30 immediately after the holder 20. During the operation of the screen printing apparatus 100, even if the squeegee unit 50 is subjected to a floating force, the squeegee unit 50 will not float.

The slide mechanism 30 has two parallel shafts 33 spaced apart, and moves the holder 20 linearly in the left-right direction.

<<<Explanation of Screen Printing Method>>>

9 and 10, a screen printing method of the screen printing apparatus 100 will be described.

The screen printing apparatus 100 has a central processing device (not shown), a memory in which programs are stored, and an operation panel. The following operations can be started by operations performed using the operation panel and executed by using the central processing unit Program.

At one end 43 of the squeegee arm 40, a squeegee unit 50 having a squeegee is fixed in advance.

At the other end 44 of the squeegee arm 40, a holder 20 is pre-installed via a swing mechanism 70.

It is assumed that the screen printing plate 91 is provided on the frame 90, the workpiece 99 is provided on the platform 98, and the ink is applied to the screen 92.

In addition, the slide mechanism 30 moves the squeegee unit 50 to the left printing start position.

In addition, the cylinder body 28 positions the doctor arm 140 and the doctor unit 150 upward.

<Initial setting procedure>

Remove the pin 792 of the swing fixing part 79 from the hole 791.

The lifting mechanism 22 moves the swing mechanism 70, the scraper arm 40, and the scraper unit 50 downward.

The guide roller 82 abuts on the guide 81.

The controller 32 rotates the belt 31 in the left direction.

By the rotation of the belt 31, the holder 20 moves to the left, and the guide roller 82 moves to the left along the guide 81.

The pressing mechanism 52 moves the scraper 51 downward relative to the scraper arm 40.

<printing steps>

9(a) and 10(a) show the printing start state.

9(b) and 10(b) show the state during printing.

Fig. 9(c) and Fig. 10(c) show the end of printing.

During printing, the slide mechanism 30 slides the holder 20 to the left.

During printing, the swing mechanism 70 is continuously pressed downward by the lifting mechanism 22 so that the guide roller 82 does not leave the guide 81.

During printing, the pressurizing mechanism 52 continuously generates printing pressure toward the screen 92 to the squeegee 51.

During printing, screen printing is performed while swinging the squeegee arm 40 around the front end S of the squeegee 51 by the swing mechanism 70.

During printing, the front end S of the squeegee 51 coincides with the central axis O of the swing performed by the swing mechanism 70.

<post-processing steps>

The lifting mechanism 22 moves the swing mechanism 70, the scraper arm 40 and the scraper unit 50 upward.

The pin 792 of the swing fixing portion 79 is inserted into the hole 791 to prohibit swing.

Since there is a tapered portion at the opening of the hole 791, even if the position of the pin 792 deviates from the hole 791, the pin 792 will be inserted into the hole 791 by the tapered portion.

<coating step>

The cylinder 28 moves the doctor arm 140 and the doctor unit 150 downward.

The controller 32 rotates the belt 31 to the right.

By the rotation of the belt 31, the holder 20 moves to the right.

By the movement of the holder 20, the doctor unit 150 applies ink to the screen 92.

The cylinder 28 moves the doctor arm 140 and the doctor unit 150 upward.

The workpiece 99 is removed.

<<<Effect of Embodiment 1>>>

According to the present embodiment, since the squeegee unit 50 is fixed only by the squeegee arm 40, the structure of the screen printing apparatus becomes simple, and the screen printing apparatus 100 can be miniaturized.

Since the squeegee arm 40 exists only on the rear side of the squeegee unit 50, an open space can be formed on the upper side, the front side, the left side, and the right side of the squeegee unit 50, thereby improving the visibility and workability of the operator.

<<<Change example>>>

Change example 1.

The cam 73 of the swing mechanism 70 may also be fixed to the swing plate 72, and the cam follower 74 may also be fixed to the fixing plate 71.

The cam 731 on the swing mechanism 70 may also be fixed to the swing plate 72, and the upper cam follower 741 may also be fixed to the fixing plate 71.

The cam 732 under the swing mechanism 70 may also be fixed to the swing plate 72, and the lower cam follower 742 may also be fixed to the fixing plate 71.

Change example 2.

The reinforcing plate 42 of the scraper arm 40 can also be fixed to the right direction of the main board 41.

If the main board 41 is strong, the reinforcing plate 42 of the scraper arm 40 may not be provided.

Modification example 3.

As long as the guide 81 coincides with the curved surface of the workpiece 99, the workpiece 99 may have either a concave curved surface or a convex curved surface.

The cross-sectional shape of the workpiece 99 in the left-right direction is not limited to a circular arc, and may be an elliptical arc, a combination of a plurality of circular arcs with different radii, or a combination with a straight line.

Modification example 4.

The central angle through the center of the two upper cam followers 741 may also be different from the central angle through the center of the two lower cam followers 742. Preferably, the central angle passing through the center of the two upper cam followers 741 is larger than the central angle passing through the center of the two lower cam followers 742.

Change example 5.

The aforementioned lifting mechanism 22 can also be reversed to be installed on the back plate 21.

The aforementioned pressurizing mechanism 52 may be reversed to be attached to the squeegee arm 40.

The aforementioned swing mechanism 70 can also be reversed before and after installation.

The parts of the aforementioned swing mechanism 70 can also be installed back and forth.

The aforementioned linear mechanism 29 may also be used instead of the aforementioned lifting mechanism 22, and vice versa.

The aforementioned lifting mechanism 22 may also be used instead of the aforementioned pressing mechanism 52, and vice versa.

Instead of the aforementioned linear mechanism 29, the aforementioned pressurizing mechanism 52 may be used, and vice versa.

The swing mechanism 70 may have another structure as long as it can swing.

The lift mechanism 22 may have another structure as long as it can move up and down.

The linear mechanism 29 may have another structure as long as it can move up and down.

The sliding mechanism 30 may have other structures as long as it has a sliding structure.

The pressurizing mechanism 52 may have other configurations as long as it can be pressurized.

The swing control unit 80 may have another structure as long as it can control the swing of the swing mechanism 70.

Embodiment 2.

In this embodiment, the differences from the aforementioned embodiment will be described.

The swing mechanism 70 shown in FIG. 12 has one cam 73.

The arc above the cam 73 is located above the swing plate 72.

The arc below the cam 73 is located below the swing plate 72.

<<<Effect of Embodiment 2>>>

If one cam 73 is used, the number of parts can be reduced.

If one cam 73 is provided, the distance between the upper and lower parts of the cam 73 can be surely fixed.

Embodiment 3.

In this embodiment, the differences from the aforementioned embodiment will be described.

The swing mechanism 70 shown in FIG. 13 is a ball bearing 75 instead of the lower cam 732 and the lower cam follower 742.

The rotation axis of the ball bearing 75 is the same as the central axis O of the cam 73.

The inner wheel of the ball bearing 75 is fixed to the fixed plate 71.

The ball bearing 75 is fixed to the swing plate 72 with the outer gear train.

The ball bearing 75 preferably uses an angular contact ball bearing suitable for a combination of radial load and axial load.

<<<Effect of Embodiment 2>>>

The ball bearing 75 allows the swing plate 72 to swing relative to the fixed plate 71.

With the ball bearing 75, the swing center of the swing plate 72 can be accurately arranged.

＊＊＊Supplementary explanation of implementation form ＊＊＊

The foregoing embodiments are examples of preferred forms, and are not intended to limit the technical scope.

The aforementioned embodiments may be implemented locally or in combination with other embodiments.

20‧‧‧ retainer

30‧‧‧sliding mechanism

40‧‧‧Scraper arm

50‧‧‧Scraper unit

70‧‧‧ Swing mechanism

80‧‧‧swing control department

90‧‧‧Frame

100‧‧‧ Screen printing device

140‧‧‧scraper arm

150‧‧‧Scraper unit

Claims (12)

A screen printing apparatus includes: a holder; a sliding mechanism that slides the holder; a squeegee arm having one end and the other end; a squeegee unit that is fixed to the one end of the squeegee arm, And has a squeegee; a swing mechanism, which is disposed between the other end of the squeegee arm and the holder, and mounts the squeegee arm to be swingable with respect to the holder; and a swing control section, which controls The swing of the scraper arm is performed by the swing mechanism. The screen printing apparatus according to claim 1, wherein the scraper arm has a main board, and a reinforcing plate orthogonal to the main board. The screen printing apparatus according to claim 1 or 2, wherein the swing mechanism has a fixing plate fixed to the holder, and a swing plate fixed to the other end of the scraper arm, and the swing control section has a guide The guide has a curved surface, and the swing control portion has a plurality of guide rollers mounted on the swing plate and moving along the guide. The screen printing apparatus according to any one of claims 1 to 3, wherein the swing mechanism has an arc-shaped cam and a plurality of cam followers that sandwich the cam, and the scraper arm and the scraper unit are only It is held by the fitting of the cam and the cam followers. The screen printing apparatus according to claim 4, wherein the cam has an upper cam and a lower cam, the plurality of cam followers have an upper cam follower that moves above the upper cam, and a lower cam The lower part moves under the cam follower. The screen printing apparatus according to any one of claims 1 to 5, wherein the holder has a lifting mechanism that moves the swing mechanism, the scraper arm, and the scraper unit up and down. The screen printing apparatus according to any one of claims 1 to 6, wherein the swing mechanism has a swing fixing portion that prohibits swing. The screen printing apparatus according to any one of claims 1 to 7, wherein the squeegee unit has a pressurizing mechanism, and the pressurizing mechanism has a fixed portion and a movable portion movable relative to the fixed portion, and the above The squeegee arm has the fixing portion fixed to the one end. The screen printing apparatus according to any one of claims 1 to 8, wherein the squeegee arm is such that the front end of the squeegee coincides with the center axis of the swing performed by the swing mechanism during printing. Fix the scraper unit described above. The screen printing apparatus according to any one of claims 1 to 9, wherein the squeegee arm and the sliding mechanism are installed at positions corresponding to the front and rear of the swing mechanism. A screen printing method is to perform screen printing on a workpiece having a curved surface; wherein, at one end of the squeegee arm, a squeegee unit with a squeegee is fixed, and at the other end of the squeegee arm, a swing mechanism is installed The holder slides the holder by a sliding mechanism, and performs screen printing while swinging the squeegee arm around the front end of the squeegee by the swing mechanism. The screen printing method according to claim 11, wherein the swing mechanism, the squeegee arm, and the squeegee unit are moved downward relative to the holder by a lifting mechanism, and the squeegee is made by a pressure mechanism The plate moves downward relative to the scraper arm.

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