JP2736406B2 - Display reflective frame printing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflective frame for display which is optimal for printing a reflective ink on a printing surface of a reflective frame on which a light emitting element such as an LED (light emitting diode) for displaying a number is attached. Related to a printing device.

[0002]

2. Description of the Related Art In general, a display device that displays numbers, characters, and the like by emitting light from a light emitting element such as an LED is used as an electronic device component. As shown in FIG. 9A, such a light emitting element is fixed to a mounting concave portion 51 formed in an approximately figure eight shape on the printing surface of a rectangular reflective frame 50 having a rectangular shape. By causing the element to emit light, desired numbers and the like can be displayed.

The reflection frame 50 is coated with black ink for reflection in order to sharpen the light emission of the light emitting element.
Conventionally, as means for applying ink, FIG.
As shown in the figure, a plurality of reflection frames 50 having the concave portions 51 on the printing surface 55 are supplied via a conveyor device 56 below a screen 53 having an application portion through which ink can pass, and the upper surface of the screen 53 is squeegeeed. By moving 58
As shown in FIG. 10 (a), there is known an ink in which an ink 57 is applied to a printing surface of the reflection frame 50.

[0004] When the printing process is completed as described above, the printing surface of the reflection frame 50 newly conveyed by the conveyor device 56 is printed. In this case, as shown in FIG. In the portion corresponding to the concave portion 51 of the reflective frame 50, the ink 57 remains. As a result,
When printing on the reflection frame 50 again with the screen 53 in this state,
Since the amount of ink in the above portion is larger than that in the other portions, the ink 57 is inadvertently adhered or dripped inside the periphery of the concave portion 51 as shown in FIG. The product value as an electronic component to be used is reduced.

Therefore, conventionally, it is necessary to clean the screen 53 in order to prevent the dripping of the ink, and the operator manually performs the back brushing with the squeegee 58 from the back side of the screen 53 to remove excess ink. Remove or
At present, it is dissolved in a solvent.

[0006]

However, since the cleaning of the screen 53 has to be performed by the operator by interrupting the printing operation every time one or several steps of the printing operation are completed, the printing efficiency is poor. There was a problem with productivity. In addition, in the scraping operation on the back of the screen 53, the excess ink cannot be sufficiently removed, which causes a reduction in the product yield.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and can improve the printing accuracy of the reflective frame printing surface, and can speed up the printing operation and improve the efficiency. The task is to be able to do so.

[0008]

The technical means taken by the present invention to solve the above-mentioned problem is that a concave portion 13 is formed on a printing surface below a screen 33 having coating portions 35a and 35b through which ink can pass. The display reflective frame 3 having the conveyor device 5
The squeegee 37 is moved over the upper surfaces of the coating sections 35a and 35b, so that the ink 16 is
In the printing apparatus of the reflective frame for display adapted to be applied to the printing surface of the above, sheets 28 and 29 made of paper material or the like and coated with ink are arranged on both sides of the conveyor device 5, and the sheet The screen 33 can be repositioned relative to the sheet members 28 and 29 so that either one of the members 28 and 29 and the coated portions 35a and 35b printed on the reflection frame 3 selectively correspond to each other. When printing on the reflection frame 3 by moving the squeegee 37, the printed application sections 35a and 35b perform blank printing on the corresponding sheet bodies 28 and 29.

It is preferable that the sheet members 28 and 29 are made of long roll paper, and are configured to be able to be wound up in synchronization with the conveyor device 5.

[0010]

In the display reflection frame printing apparatus according to the present invention, when the reflection frame 3 is conveyed below the screen 33 by the conveyor device 5, the ink 16 is applied to the coating section 35a of the screen 33 when the squeegee 37 moves. And is applied to the printing surface 8 of the reflection frame 3.

Next, when the screen 33 moves, a coating portion 35b different from the above corresponds to the newly transported reflection frame 3, and the printed coating portion 35a is connected to one sheet member.
Corresponds to 28. Therefore, when the squeegee 37 moves again,
The ink 16 passes through the application portion 35b and the printing surface 8 of the reflection frame 3
At the same time, when the squeegee 37 moves on the printed application portion 35a, the squeegee 37 is blank-printed on the sheet 28, and at this time, the excess ink 16 remaining on the printed application portion 35a
Is applied to the sheet 28 and is reliably removed.

Further, by moving the screen 33 to the original position, the coating portion 35a from which the excess ink 16 has been removed
Can be printed on the reflection frame 3 through the other sheet body
The printed application section 35b is blank printed on 28.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a printing apparatus for a reflective frame for display, and a plurality of reflective frames 3 are supplied via a conveyor device 5 from a supply device 4 in which a plurality of reflective frames 3 are arranged in a plurality of rows. A printing apparatus main body 6 for applying the reflection ink 16 to the reflection frame 3 and a drying device 7 for drying the printing surface 8 of the reflection frame 3 printed by the printing apparatus main body 6 are provided. The reflection frame 3 has a rectangular shape, a plurality of recesses 13 to which the light emitting elements are fixed are formed on the printing surface 8, and feet 3 a are projected from four corners at the lower portion of the reflection frame 3. ing.

The supply device 4 is provided with a transfer device 9 such as a conveyor for transferring a plurality of rows of reflective frames 3 in contact with each other. A stopper 10 for releasably stopping and positioning is provided by a cylinder 11 as shown in FIG.

Reference numeral 12 denotes a delivery table for receiving the reflection frame 3 in the top row and transferring it to the alignment means 14 provided on the printing apparatus main body 6 side. The delivery table 12 receives the reflection frame 3 by a cylinder or the like. It reciprocates horizontally between a receiving position A and a transferring position B for transferring each reflecting frame 3 to the aligning means 14. Therefore, at the receiving position A of the table 12, the stopper 10
Is lowered to position the reflection frames 3, and these reflection frames 3 can be placed on the table 12 at the receiving position A.

The aligning means 14 is set at the same height as the table 12 and the conveyor device 5, and as shown in FIG. 7, the guide ridge 15 is directed in the downstream direction of conveyance (toward the conveyor device 5). Are provided so as to be separated from each other. Each guide ridge 15 is provided corresponding to the number of each reflection frame 3, and is located between the feet 3 a of the reflection frame 3.

Reference numeral 17 denotes a moving device for moving the reflection frame 3 integrally, and a moving body 18 for drawing each reflection frame 3;
Cylinder 20 as drive means for moving the moving body 18
And a guide body 21 for guiding the movement of the moving body 18.
The moving device 17 is provided so as to be able to move up and down.

In the printing apparatus main body 6, a printing section 26 provided above the conveyor apparatus 5 is provided by a cylinder 24 mounted on a machine base 23 so as to be movable horizontally in the width direction of the conveyor apparatus 5. Have been. Reference numeral 27 denotes a pair of guide rods fixed to the printing unit 26, which are slidably inserted into guides 27a provided on the printing apparatus main body 6 to guide the movement of the printing unit 26. On both sides of the conveyor device 5, a first sheet 28 and a second sheet made of a long paper roll are respectively provided.
29 are arranged in parallel with each other, and each sheet 28, 29 is set on the machine base 23 in a state of being wound on one winding shaft 30a, and wound on the other winding shaft 30b in synchronization with the conveyor device 5. It can be taken freely.

The printing section 26 has a screen 33 fixed horizontally on a frame 32 connected to the cylinder 24. The screen 33 has an application section through which the ink 16 can pass in the same direction as the conveyor device 5. A pair of band-shaped mesh portions 35a and 35b are provided in parallel. Therefore, by moving the frame 32, when one of the mesh portions 35a corresponds to the reflection frame 3 on the conveyor device 5 as shown in FIG.
Conversely, when the other mesh portion 35b corresponds to the reflection frame 3 as shown in FIG. 14B, it is possible for one mesh portion 35a to correspond to the second sheet 29.

Here, the first and second sheets 28 and 29 are used.
Is set at the same height as the printing surface 8 of the reflection frame 3 conveyed by the conveyor device 5 so that the mesh portions 35a and 35b are close to each other as shown in FIG.
The second sheets 28 and 29 are preferably provided so as to be vertically movable so that the height of the upper surface thereof can be appropriately adjusted according to the size of the reflection frame 3.

Reference numeral 37 denotes a squeegee made of a rubber material or the like for applying ink 16 to the upper surface of the reflection frame 3 while traveling while pressing on the screen 33. The squeegee 37 is attached to each of the mesh portions 35a and 35b. Corresponding pairs are provided, and are mounted on mounting portions 38 which are reciprocally movable along the conveyor device 5 by an electric mechanism or a cylinder mechanism (not shown).

Reference numeral 40 denotes a plurality of reflection frames 3 on which the ink 16 has been applied.
Is supplied to the conveyor 7a of the drying device 7, and is provided so as to be able to move back and forth by a pushing means 41 such as a cylinder.

The printing apparatus according to the present embodiment has the above configuration.
Next, an example of its use will be described. First, a large number of reflection frames 3 are sequentially conveyed by the conveyance device 9 of the supply device 4, and the reflection frames 3 in the first row are positioned by the stoppers 10 and placed on the table 12 at the receiving position A (FIG. 6 (a)).

Next, when the stopper 10 is raised by the operation of the cylinder 11, the table 12 moves forward to the transfer position B (see FIG. 6B). Further, after the cylinder 20 of the moving device 17 is extended and the moving body 18 is advanced, the whole is lowered and the moving body 18 comes into contact with the reflection frame 3 on the table 12 from behind.

Next, the contraction of the cylinder 20 causes the moving body 18 to contract.
Draws each of the reflection frames 3 at the same time. At this time, the ridge 15 of the alignment means 14 enters between the feet 3a of each of the reflection frames 3, and each of the reflection frames 3 moves along the ridge 15. Be gradually spaced. The separated reflection frames 3 are supplied to the conveyor device 5 in a line, and the reflection frames 3 are conveyed to a position below the screen 33 of the printing apparatus main body 6 and stopped.

The printing section 26 of the printing apparatus main body 6 has moved to one side, one mesh section 35a corresponds to the reflection frame 3 on the conveyor apparatus 5, and the other mesh section 35b is the first mesh section 35b.
This corresponds to the sheet 28 (see FIG. 3A).

Next, when both squeegees 37 move simultaneously on the screen 33 to which the ink 16 is appropriately replenished, the printing surface 8 of each reflection frame 3 is moved through one mesh portion 35a.
The ink 16 is applied to the entire surface except the concave portion 13, and the blank is printed on the first sheet 28 via the other mesh portion 35b (see FIG. 5).

Further, the conveyor device 5 is operated to operate the ink 16
Is transported, and the reflection frame 3 in the next row is transported below the screen 33. When the reflecting frame 3 is conveyed, the printing section 26 moves due to the contraction operation of the cylinder 24, the other mesh section 35b corresponds to the reflecting frame 3, and one mesh section 35a corresponds to the second sheet 29 ( 3 (b) and 4). The first sheet 28 blank-printed in synchronism with the conveyor device 5 is automatically wound up to a position where a new portion to which the ink 16 is not applied corresponds to the mesh portion 35a.

When the position of the screen 33 is changed in this way, the squeegees 37 that have returned to their original positions move on the screen 33 again. Also at this time, the printing surface 8 of the reflection frame 3 is printed via the other mesh portion 35b as described above. On the other hand, the second sheet 29 is blank-printed through the one mesh portion 35a, and includes the ink 16 remaining in the one mesh portion 35a at the time of printing on the reflective frame 3 last time. The ink 16 is printed on the second sheet 29 with almost no ink 16 remaining, and one of the mesh portions 35 is printed.
The ink 16 of a is removed as if it had been wiped off.

Hereinafter, similarly, one mesh portion 35
a and the other mesh portion 35b are used alternately, and the unused mesh portions 35a, 35b are printed on the reflection frame 3 at the same time as the first and second sheets 28, 29, respectively.
And the ink 16 of each mesh portion 35a, 35b is removed, and the first or second sheet is printed.
The printing operation does not need to be interrupted for cleaning the screen 33, since 28 and 29 are fed out as needed and new parts are supplied.

In addition, every printing operation, the mesh portion 35a,
The reflection frame 3 is printed via the mesh portions 35a and 35b in a state where the ink 16 remaining on the reflection frame 35b is removed, and the reflection frames 3 are printed as shown in FIGS. There is no danger that excess ink 16 will sag on the edge of the concave portion 13.

In addition, since the reflection frames 3 are separated from each other during printing, there is no possibility that the ink 16 on the outer peripheral edge of each reflection frame 3 will adhere to the adjacent reflection frame 3.

Next, the reflection frame 3 on which the ink 16 is printed is
Conveyor 7a of drying device 7 equipped with a heater by extrusion means 40
, And is heated and quickly dried when passing through the drying device 7.

The present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, a rectangular frame is used as the reflection frame 3. It may have a shape, and the shape can be freely set.

In addition, it goes without saying that the concave portion 13 provided in the reflection frame 3 may be any symbol such as a circle or a triangle in addition to the characters. Moreover, the printing surface of the reflection frame 3 is not limited to a flat surface, but may be a convex surface.

[0036]

As described above, according to the present invention, a sheet made of a paper material or the like and coated with ink is disposed on both sides of the conveyor device. The screen is provided so as to be able to change its position relative to the sheet body so that the printing portion that has already been printed on can selectively correspond to the printed portion, and when the squeegee is moved and printed on the reflective frame, the screen is printed. Since the printing unit is configured to perform blank printing on the corresponding sheet, the printing operation and the print removal operation of the screen can be performed at the same time, and there is no need to interrupt the printing operation every time the screen is cleaned as in the past. As a result, it becomes possible to apply the ink to the reflection frame, thereby improving the work efficiency and improving the productivity.

Further, by performing blank printing on the sheet body,
The removal of the ink from the application part of the screen is assured, and it is possible to reliably prevent ink dripping of the reflection frame due to excess ink, as compared with the conventional back brush means, and it is possible to improve accuracy. It is possible to improve the yield, and particularly, it is most suitable as an electronic component requiring accuracy, and its practical value is remarkable.

[Brief description of the drawings]

FIG. 1 is an overall schematic front view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIGS. 3A and 3B are plan views each including a partial cross section showing a positional relationship between a screen and a sheet body.

FIG. 4 is a sectional side view showing a printing state.

5A is a cross-sectional front view showing a printing state on a reflection frame, and FIG. 5B is a cross-sectional front view showing a printing state on a sheet.

FIGS. 6A and 6B are front views respectively showing a receiving state and a receiving state of the reflection frame.

FIG. 7A is a plan view showing a state where the reflection frame is separated by the alignment means, and FIG.

8A is a perspective view of a reflection frame, and FIG. 8B is a cross-sectional view of the reflection frame.

FIG. 9 shows a conventional example, in which (a) is a perspective view of a reflection frame,
(B) is a schematic front view of a state where printing is performed on the reflection frame.

FIG. 10 shows a conventional example, in which (a) is a plan view of a reflection frame,
(B) is a rear view showing a part of the screen, and (c) is a sectional view of the reflection frame.

[Explanation of symbols]

3: Reflective frame, 5: Conveyor device, 28, 29: Sheet body, 33
... Screen, 35a, 35b ... Coating part, 37 ... Squeegee

Claims (2)

(57) [Claims] 1. An application part (35a) through which ink can pass,
Below the screen (33) having (35b), a reflective frame (3) for display having a concave portion (13) on the printing surface is supplied via a conveyor device (5), and the coating sections (35a), ( 35
By moving the squeegee (37) on the upper surface of b),
In a printing device for a reflective frame for display, wherein ink (16) is applied to a printing surface of the reflective frame (3), both sides of the conveyor device (5) are made of a paper material or the like and can be applied with ink. The sheet bodies (28) and (29) are arranged, and one of the sheet bodies (28) and (29) and the coating portions (35a) and (35b) printed on the reflection frame 3 are formed. The screen (33) should be seated (2
8) and (29) are provided so as to be changeable relative to each other, and when the squeegee (37) is moved to print on the reflection frame (3), the printed coating sections (35a) and (35b) are printed. Characterized in that it is configured to perform blank printing on the corresponding sheet members (28) and (29). 2. The two sheet bodies (28) and (29) are made of long roll paper, and are configured to be able to be wound up in synchronization with the conveyor device (5). Printing device for reflective frames for display.