KR100246236B1 - Squeeze loading system of screen printer - Google Patents

Abstract

The present invention relates to a squeegee automatic detachment apparatus of a plasma display panel (PDP) screen printer, and includes a head guide positioned side by side so that a screen to be printed therein is embedded, and a printing is performed on the screen while reciprocating along the head guide. A squeegee head portion provided with a squeegee for carrying out, a driving means for reciprocating the squeegee head portion from above the head guide, and a squeegee provided at the front side of the head guide to remove or mount a squeegee of the squeegee head portion. It consists of a detachable part and a control part which controls each said component part, and inputs the signal of a squeegee detachable switch, and temporarily mounts a squeegee and a squeegee holder in a squeegee detachment part in the screen exchange operation of a screen printer, and attaches a squeegee holder to a squeegee head part One switch to be able to put on and take off automatically from It relates to a squeegee device for automatic removal Lin printer.

Description

Squeegee Automatic Removal Device of Screen Printer

The present invention relates to a squeegee automatic detachment device for a plasma display panel (PDP) screen printer. In particular, the squeegee holder is provided by providing a squeegee attachment and detachment unit for temporarily mounting a squeegee and a squeegee holder during screen replacement of the screen printer. It is related with the apparatus which attaches and detaches automatically from a part.

As shown in FIG. 1, the squeegee part of the screen printer has two squeegee head guides 10 arranged in parallel so that the screen S to be printed is positioned inward, and both ends are positioned on the squeegee head guide 10 so that the squeegee head is positioned inward. And a squeegee head portion 20 for printing on the screen S while being reciprocated, and connected to one side of the squeegee head portion 20 so that the squeegee head portion 20 is moved forward and backward on the squeegee head guide 10. It comprises a drive means 30 for moving to.

Here, the squeegee head portion 20 has a squeegee holder 21 for fixing the squeegee 1, a squeegee clamp 22 to which the squeegee holder 21 is fixed, and a side surface of the squeegee clamp 22. A clamp cylinder 23 which is positioned to fix the squeegee holder 21 to the squeegee clamp 22, and the squeegee clamp 22 is fixed to a lower side thereof, and both ends thereof are positioned above the squeegee head guide 10. A reciprocating squeegee frame 25, a vertical transfer cylinder 26 positioned above the squeegee frame 25 to raise or lower the squeegee clamp 22, and lower ends of both ends of the squeegee frame 25. And a transfer support 27 positioned between the squeegee head guide 10 and connected to the driving means 30.

In addition, the driving means 30 includes a driving motor 32 rotated in the forward or reverse direction under the control of the controller 40, a timing pulley 34 connected to the shaft of the driving motor 32, and The timing pulley 34 is composed of a timing belt 36 connected to the transfer support of the squeegee head 20.

In the screen printer configured with the squeegee, the squeegee head 20 is reciprocated by the squeegee head guide 10 while the driving motor 32 is rotated forward or reverse by the control of the controller 40. The squeegee 1 of the head 20 is printed on the upper surface of the screen (S).

Here, the squeegee 1 and the squeegee holder 21 are vertically moved while the vertical transfer cylinder 26 is operated by the hydraulic pressure under the control of the controller 40.

In order to remove the squeegee 1 from the squeegee portion of the conventional screen printer constructed and operated as described above, the driving motor 32 is operated to transfer power through the timing pulley 34 and the timing belt 36 to squeegee head portion. After moving 20 toward the operator, the squeegee holder 21 and the squeegee 1 are separated from the squeegee clamp 22 by holding the squeegee holder 21 with the operator's hand and retracting the clamp cylinder 23.

On the contrary, in order to mount the squeegee 1 on the squeegee head portion 20, the squeegee holder 21 on which the squeegee 1 is mounted is held by hand, coupled to the squeegee clamp 22, and then the hydraulic pressure of the clamp cylinder 23 is applied. Fix it.

However, the squeegee portion detachment structure of the conventional screen printer as described above is performed when the squeegee holder 21 is detached from the squeegee clamp 22 so that the squeegee holder 21 is performed under the squeegee head portion 20. It is difficult to accurately fit the mounting position is not seen well, this takes a lot of work time, of course, there is a problem that the squeegee 1 may be damaged by dropping the squeegee holder (21).

In addition, since two squeegee holders 21 are assembled at the front and rear sides of the squeegee head part 20, there is a problem in that the squeegee holder 20 is more difficult to assemble since it is not properly seen when assembling the squeegee holder 20.

The present invention has been made in order to solve the above problems, to automate the coupling and disassembly of the squeegee holder when the squeegee is attached and detached to shorten the work preparation time, to accurately position the squeegee holder, and to replace the squeegee It is to provide a squeegee automatic detachment device of a screen printer which prevents a safety accident and improves quality and productivity.

1 is a schematic perspective view showing a squeegee portion of a conventional screen printer;

Figure 2 is a schematic configuration and block diagram showing the automatic squeegee detachable device of the screen printer according to the present invention,

3 is a view showing a squeegee head of the present invention,

3a is a schematic perspective view,

3b is a cross-sectional view,

Figure 4 is a view showing a squeegee detachable portion of the present invention,

4a is a schematic perspective view,

4b is a side view,

5 is a block diagram showing a control and power transmission structure of the present invention;

6 is a flow chart of a squeegee exchange operation in accordance with the present invention.

<Description of the code | symbol about the principal part of drawing>

50: head guide

60: squeegee head portion 60a: squeegee 61: head frame

62: vertical transfer cylinder 63: angle conversion unit 63a: angle conversion cylinder

64a: projecting member 64b: adjusting bolt 65: vertical feed frame

66: squeegee clamp portion 67a: squeegee holder 67b: clamp cylinder

68 clamp block 68a hinge 69a horizontal protrusion

69b: vertical protrusion

70: drive means 71: motor driver 72: drive motor

74: Timing Pulley 76: Timing Belt

80: squeegee mounting portion 81: base plate 82: vertical plate

83: reference block 84: clamp plate 83a, 84a: seating portion

85: spring

90 control unit 92 squeegee detachable switch 94 electronic control unit

96: hydraulic control unit

Automatic squeegee detachment device of the screen printer of the present invention for realizing the above object, the head guide positioned side by side so that the screen to be printed therein, and the printing on the screen while reciprocating along the head guide A squeegee head portion having a squeegee installed therein; a driving means for reciprocating the squeegee head portion above the head guide; and a squeegee head portion provided at the front side of the head guide to remove or mount the squeegee. And a control unit for controlling the squeegee detachable parts and the components and inputting a signal of the squeegee detachable switch.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

The squeegee automatic detachment apparatus of the screen printer according to the present invention includes a head guide 50 positioned side by side so that the screen S to be printed therein may be embedded, as shown in FIG. 2, along the head guide 50. Driving means for reciprocating the squeegee head portion 60 and the squeegee head portion 60, the squeegee head 60 is provided so as to perform printing on the screen (S) while the reciprocating motion ( 70) and a squeegee attachment / detachment portion 80 which is installed at the front side of the head guide 50 to remove or mount the squeegee 60a of the squeegee head portion 60, and controls each of the components. It is comprised by the control part 90 in which the signal of the squeegee detachable switch 92 is input.

That is, according to the present invention, when the squeegee detachment switch 92 is operated to detach and mount the squeegee 60a from the squeegee head 60, the squeegee head 60 is the head guide 50 according to the signal of the controller 90. Move to the squeegee detachable portion 80 and then remove the squeegee 60a from the squeegee demountable portion 80 to the squeegee demountable portion 80 or squeegee from the squeegee detachable portion 80 to the squeegee head portion 60. It is configured to be mounted.

Hereinafter, each component of the present invention will be described in detail.

First, referring to FIGS. 2 and 3, the squeegee head 60 has a head frame having both ends positioned above the head guide 50 and reciprocated in the front and rear directions by the driving means 70. 61 and an angle converter 63 vertically moved downward from the head frame 61 by a vertical transfer cylinder 62 positioned above the head frame 61 and provided with an angle conversion cylinder 63a on the side thereof. The squeegee clamp portion 66 is rotated within a predetermined angle range by the angle converting portion 63 and the squeegee 60a is fixed to the lower side.

Here, the squeegee clamp portion 66 is a squeegee holder (67a) is fixed to the squeegee (60a), the squeegee holder (67a) is fixed to the lower side of the clamp block 68 is fixed to the hinge (68a) so that the top is rotatable ), A clamp cylinder 67b positioned on the side of the clamp block 68 and hydraulically actuated to fix or detach the squeegee holder 67a, and a hinge portion 68a of the clamp block 68. In the vertical direction and the horizontal direction in each of the vertical projection (69b) and the horizontal projection (69a) is connected to the angle conversion portion (63).

In addition, the angle conversion unit 63 is installed on the vertical transfer frame 65 which is vertically moved by the vertical transfer cylinder 62, the side of the vertical transfer frame 65 and the squeegee clamp portion 66 of the An angle conversion cylinder 63a which rotates the squeegee clamp portion 66 while the inner piston is moved up and down by hydraulic pressure according to the signal of the controller 90 in FIG. 2 and the vertical transfer frame ( 65 is provided below the stopper 64a, 64b for limiting the rotational distance of the vertical projection 69b of the squeegee clamp 66.

The stoppers 64a and 64b are fastened in a direction perpendicular to the plurality of protrusion members 64a fixed to the bottom of the vertical transfer frame 65 in the vertical direction, and perpendicular to the protrusion members 64a. The adjustment bolt 64b which adjusts forward and backward movement distance of 69b) is comprised.

Next, referring to FIGS. 2 and 5, the driving means 70 includes a motor driver 71 and a driving motor 72 which are rotated forward or reverse according to a signal of the controller 90, and the driving motor. A timing pulley 74 connected to the shaft of the 72 and a timing belt 76 connected to the timing pulley 74 to reciprocate the squeegee head 60 along the head guide 50. It consists of).

Next, referring to FIGS. 2 and 4, the squeegee detachable part 80 is a base plate 81 fixed to an inner side of the head guide 50 in a long direction, and is perpendicular to an upper side of the base plate 81. The upright vertical plate 82, the reference block 83 fixed in the vertical direction above the base plate 81, which is a position facing the vertical plate 82, the vertical plate 82 and the reference block 83; Clamp plate 84 is installed between the reference block 83 and the squeegee holder 67a in which the squeegee 60a is fixed between the reference block 83 and the clamp plate 84 are attached to the reference block 83. Squeegee holder detection sensor is installed on the side of the base plate 81 and the spring 85 to push in the direction to detect whether the squeegee holder 67a is seated between the reference block 83 and the clamp plate 84 86 and the squeegee head 60 Consists of a group based on the block 83 and the clamping plate (84) mounting and detaching position detecting sensor 88 for sensing that the position on the upper side.

Here, the reference block 83 and the clamp plate 84 are formed in the groove-shaped mounting portion (83a, 84a) so that the squeegee holder (67a) of the squeegee head portion is mounted on the upper side facing each other.

In addition, the squeegee holder detection sensor 86 and the detachable position detection sensor 88 are configured to input the detection result to the controller 90.

Next, referring to FIGS. 2 and 5, the control unit 90 receives signals from the squeegee detachable switch 92, the squeegee holder detecting sensor 86, and the detachable position detecting sensor 88, and the squeegee head unit ( The electronic control unit 94 outputs a control signal for driving the 60 and the solenoid valve is operated in response to the signal of the electronic control unit 94, and the cylinders 62, 63a and 67b of the squeegee head unit 60 are hydraulically operated. It is comprised by the hydraulic control part 96 which operates.

Referring to Figure 6 illustrates the operation of the automatic squeegee of the screen printer according to the present invention configured as described above as follows.

First, when the squeegee removal switch 92 is pressed to remove the squeegee holder 67a and the squeegee 60a mounted on the squeegee head 60, a signal is input to the electronic control unit 94, and the electronic control unit 94 The squeegee holder sensor 86 of the squeegee detachable part 80 checks whether there is a squeegee holder 67a between the reference block 83 and the clamp plate 84 according to the control signal of the squeegee mounting portion 80 and then returns to the electronic controller 94. Input the signal.

At this time, when it is confirmed that there is no squeegee holder 67a in the squeegee detachable part 80, the hydraulic control unit 96 and the driving means 70 are operated by the electronic control unit 94.

Therefore, the hydraulic control unit 96 operates the vertical transfer cylinder 62 of the squeegee head 60 so that the squeegee holder 67a and the squeegee 60a are separated from the screen S and moved upward. The driving means 70 moves the squeegee head portion 60 to the squeegee dismounting portion 80 while the squeegee holder 67a is moved upward.

Meanwhile, when printing the screen head 60 while moving the screen head 60 above the head guide 50, the angle conversion cylinder 63a is operated by the electronic control unit 94 and the hydraulic control unit 96 in FIG. 3B. So that the squeegee clamp portion 66 and the squeegee 60a are positioned in the inclined direction, and when the squeegee S is attached and detached, the squeegee clamp portion 66 is operated by vertically operating the angle conversion cylinder 63a. do.

That is, as the angle conversion cylinder 63a is operated by hydraulic pressure, the squeegee clamp portion 66 is rotated by a limited amount of the stoppers 64a and 64b to help the convenience of printing and detaching.

Next, in the process of moving the squeegee head portion 60 to the squeegee dismounting portion 80 by the driving means 70, the squeegee holder 67a mounted on the squeegee head portion 60 is the squeegee dismounting portion 80. When it comes between the reference block 83 and the clamp plate 84 of the removable position detection sensor 88 detects this and sends a signal to the electronic control unit 94, accordingly, the electronic control unit 94 is the drive motor 72 Will stop the operation.

Thereafter, the electronic control unit 94 sends a signal to the hydraulic control unit 96 to operate the vertical transfer cylinder 62 so that the vertical transfer frame 65 and the squeegee clamp unit 66 are immediately above the squeegee detachable unit 80. When the clamp cylinder 67b is operated, the squeegee holder 67a and the squeegee 60a, which have been fixed to the clamp block 68, are placed between the clamp plate 84 and the reference block 83. The squeegee holder 67a and the squeegee 60a are separated while descending to 83a and 84a.

As such, the vertical transfer frame 65 and the squeegee clamp portion 66 of the squeegee head portion 60 from which the squeegee holder 67a and the squeegee 60a are separated are raised by the operation of the vertical transfer cylinder 62.

Next, the squeegee holder 67a and the squeegee 60a, which are separated from the squeegee detachable part 80, are taken out, and the squeegee holder 67a and the squeegee 60a to be replaced are replaced with the reference block of the squeegee detachable part 80. 83) and the clamp plate 84, and then press the squeegee release switch 92, the squeegee holder detection sensor 86 confirms that the squeegee holder (67a) in the squeegee detachable portion 80, and the electronic control unit ( 94).

In this case, the electronic control unit 94 operates the vertical transfer cylinder 62 and the clamp cylinder 67b through the hydraulic control unit 96, and the vertical transfer frame 65 and the squeegee clamp unit of the squeegee head 60. 66 is lowered to fix the squeegee holder 67a seated between the reference block 83 and the clamp plate 84 in the clamp block 68. Then, when the vertical transfer frame 65 and the squeegee clamp portion 66 are raised by the upward movement of the vertical transfer cylinder 62, the squeegee head portion 60 on which the squeegee 60a is mounted by the driving means 70 is printed. It will be moved to a position so that printing can be performed.

Therefore, the squeegee automatic detachment device of the screen printer of the present invention constructed and operated as described above is quickly pressed to remove the squeegee because the controller automatically removes or mounts the squeegee holder and the squeegee in response to the detection of each sensor when the squeegee detachment switch is pressed. Accurately shorten the work preparation time, as well as the assembly position is secured, there is an advantage that the degree of assembly is improved.

In addition, the present invention is provided with a squeegee detachable portion has the advantage of preventing the accident that the squeegee and the squeegee holder can be damaged by falling to the bottom when the squeegee is removed.

Claims (10)

A head guide positioned side by side so as to have a screen to be printed inside, a squeegee head portion provided with a squeegee for printing on the screen while reciprocating along the head guide, and the squeegee head portion above the head guide. A driving means for reciprocating at the front side, a squeegee mounting portion installed at the front side of the head guide to remove or mount a squeegee of the squeegee head portion, and a signal of a squeegee removal switch to control the respective components. Squeegee automatic detachment device of a screen printer, characterized in that configured as a control unit. The method of claim 1, The squeegee head portion is moved upward and downward from the lower side of the head frame by a head frame which is positioned at the head guide and reciprocated in the front and rear direction by the driving means, and a vertical transfer cylinder located above the head frame. And a squeegee clamp portion which is rotated within a predetermined angle range by the angle converting portion and a squeegee is fixed to the lower side by a conversion cylinder. The method of claim 2, The squeegee clamp part is a squeegee holder to which the squeegee is fixed, the squeegee holder is fixed to the lower side of the clamp block is hinged so as to be rotatable, the upper side is located on the side of the clamp block to secure or separate the squeegee holder And a clamp cylinder to which hydraulic pressure is applied, and a vertical protrusion and a horizontal protrusion protruding from the hinge portion of the clamp block in a vertical direction and a horizontal direction, respectively, to be connected to the angle converting portion. The method of claim 2, The angle converting portion is vertically moved by the vertical transfer cylinder and vertically moved frame, and is installed on the side of the vertical transfer frame and connected to the horizontal protrusion of the squeegee clamp portion, the internal piston is moved up and down by hydraulic pressure according to the signal of the controller And an angle conversion cylinder for rotating the squeegee clamp portion, and a stopper disposed below the vertical transfer frame to limit the rotation distance of the vertical protrusion of the squeegee clamp portion. The method of claim 4, wherein The stopper is composed of a plurality of protrusions fixed in the vertical direction on the bottom surface of the vertical transfer frame, and the adjustment bolt for fastening the front and rear movement distance of the vertical protrusions is fastened in a direction orthogonal to the protrusion member. Squeegee automatic removal device of screen printer. The method of claim 1, The driving means may include a motor driver and a driving motor which rotates forward or reverse according to a signal of the controller, a timing pulley which is connected to a shaft of the driving motor, and a timing pulley, wherein the squeegee head is connected to the head guide. Squeegee automatic detachment device of the screen printer, characterized in that consisting of a timing belt to reciprocate along. The method of claim 1, The squeegee mounting portion includes a base plate fixed to the inside of the head guide, a vertical plate erected vertically on the upper side of the base plate, and a reference block fixed to the upper side of the base plate, which is a position facing the vertical plate. And a clamp plate installed between the vertical plate and the reference block and having a squeegee holder fixed therebetween with the reference block, a spring for pushing the clamp plate in the direction of the reference block, Squeegee holder sensor for detecting whether a squeegee holder is seated between the reference block and the clamp plate, and a detachable position detecting sensor for detecting whether the squeegee head is located above the reference block and the clamp plate. that Screen squeegee automatic removal device of the printer according to claim. The method of claim 7, wherein The reference block and the clamp plate is a squeegee automatic detachment device of the screen printer, characterized in that the groove-shaped mounting portion is formed so that the squeegee holder is mounted on the upper side facing each other. The method of claim 7, wherein And the squeegee holder sensor and the detachable position sensor are configured to input the detection result to the controller. The method according to claim 1 or 7, The control unit includes an electronic control unit for receiving signals from a squeegee detachable switch, a squeegee holder sensor, and a detachable position detecting sensor, and outputting a control signal for driving the squeegee head, and operating the solenoid valve in response to a signal from the electronic control unit. Squeegee automatic detaching device of the screen printer, characterized in that consisting of a hydraulic control unit for operating each cylinder of the squeegee head.

Images