KR100982081B1 - Screen printer - Google Patents

Abstract

PURPOSE: A screen printer improving the accuracy on a print job through a minute position control is provided to improve accuracy in the squeegee operation is improved through the minute position control. CONSTITUTION: A screen printer improving the accuracy on a print job comprises a device body(10), an up and down movement member(20), an top and bottom direction driving unit, a loading unit(40), a stencil combining unit(50), a squeegee combining unit, a knife combining unit, a left and right moving member(80), a right and left direction driving unit and a controller(100). The stencil combining unit is installed at the up and down movement member. The squeegee combining unit comprises the squeegee compressing the paste spreads on stencil.

Description

Screen printer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen printer, and more particularly, to a screen printer that can improve accuracy in a print job through precise position control and can prevent shock and noise from being generated during driving. .

A screen printer arranges a stencil (also referred to as a screen mask) in which the shape of the print film is patterned on the printing surface of the object to be printed, and applies a paste onto the stencil to apply a squeegee to the stencil. It is a device that advances printing by pressing a squeegee and transferring it onto a printing surface.

Therefore, the squeegee must be driven in the horizontal direction with respect to the plate surface of the stencil. Of course, some screen printers in which the squeegee is driven in the vertical direction have been disclosed as necessary.

Any type of squeegee drive is required to drive the squeegee.At present, the squeegee drive unit applied to the screen printer has been a cylinder, especially a pneumatic cylinder. Problems that cause noise are caused.

SUMMARY OF THE INVENTION An object of the present invention is to provide a screen printer which can improve the accuracy in a print job through precise position control, and can prevent the impact and noise from being generated during driving.

The object is, the apparatus main body is provided on one side of the column standing up along the vertical direction; An up and down moving member partially connected to the column in a direction crossing the column and movable in an up and down direction on the column; An up and down driving unit having a vertical driving motor and driving the up and down moving member in an up and down direction; A loading unit provided on an upper portion of the apparatus main body and loaded with a printing object; A stencil coupling unit mounted to the vertical moving member and detachably coupled to the stencil at one side thereof; A squeegee coupling unit to which a squeegee for pressing a paste applied on the stencil is detachably coupled; A left and right moving member supporting the squeegee coupling unit but partially connected to the up and down moving member and movable along the left and right direction on the up and down moving member; And a left and right direction driving motor, the left and right direction driving unit for driving the left and right moving members in the left and right directions.

Here, the vertical driving unit, the vertical guide portion provided along the vertical direction from one side of the column; A vertical movement block having one end connected to the vertical moving member and the other end movably connected to the vertical guide part; And disposed between the up and down driving motor and the up and down moving block, it may include a motion transfer unit for transmitting a rotational movement from the up and down driving motor to the linear movement of the up and down moving block.

The left and right direction driving unit, a driving timing pulley to which the left and right direction driving motor is connected; A driven timing pulley disposed at a position spaced apart from the driving timing pulley; A timing belt connecting the driving and driven timing pulleys in a closed loop shape; And one end connected to the left and right moving members, and the other end including a left and right moving block movably coupled to the timing belt.

A knife coupling unit coupled to the left and right moving members at a position adjacent to the squeegee coupling unit and detachable from the knife at an end thereof; A squeegee up / down driving member provided on the left and right moving members to drive the squeegee coupling unit up / down; And a knife up / down driving member provided on the left and right moving members to drive the knife coupling unit up / down.

The stencil coupling unit may include a holder in which an end region of the stencil is partially received; A pressure plate provided around the holder to press an end portion of the stencil partially accommodated in the holder to one side wall of the holder; And a bolt member connected to the pressure plate to move the pressure plate.

The stencil coupling unit may be symmetrically disposed at both end regions of the vertical movement member as the same structure, and may be provided to be individually moved on the vertical movement member.

The loading unit may include a plurality of block members stacked in layers in a plurality of stages, the adjacent ones being movable in a moving direction or a direction crossing the left and right moving members by engaging adjacent dove tail shapes; And a plurality of operation units coupled to the plurality of block members by positions to manipulate relative positions between the plurality of block members.

The apparatus may further include a controller for controlling the operation of the vertical driving unit and the horizontal driving unit.

According to the present invention, it is possible to improve the accuracy in the print job through the precise position control, there is an effect that can prevent the impact and noise caused during driving.

1 to 3 are respectively a front view, a side view and a plan view of a screen printer according to an embodiment of the present invention;
4 and 5 are views showing the vertical movement of the vertical movement member,
6 is a view showing left and right movement of the left and right moving members;
7 is a view for explaining the structure of the vertical drive unit;
8 to 10 are views for explaining the structure of the left and right driving unit.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 to 3 are respectively a front view, a side view and a plan view of a screen printer according to an embodiment of the present invention, FIGS. 4 and 5 are views showing the vertical movement of the vertical moving member, and FIG. 6 is the left and right moving member. 7 is a view illustrating a left and right direction operation, FIG. 7 is a view for explaining the structure of the vertical drive unit, and FIGS. 8 to 10 are views for explaining the structure of the left and right drive unit.

As shown in these drawings, the screen printer of the present embodiment, the device body 10, the vertical moving member 20, the vertical drive unit 30, the loading unit 40, the stencil coupling unit 50, squeegee coupling The unit 60, the knife coupling unit 70, the left and right moving members 80, the left and right driving units 90, and the controller 100 are provided.

Device body 10, as shown in Figures 1 and 2, the part forming the appearance of the equipment. It may be made of a rigid metal material, the printing operation is carried out on the loading unit 40 of the upper zero. Various electric or mechanical parts may be mounted inside the apparatus body 10.

A plurality of wheels 11 are provided below the device body 10. Due to the large number of wheels 11, the screen printer of the present embodiment is free to move in position. Therefore, the printing work position can be changed conveniently.

After the screen printer is moved, the stopper 12 is provided around the plurality of wheels 11 because the screen printer must be fixed relative to the ground. The stopper 12 may be added with a height adjustment function.

One side of the rear of the upper end of the device body 10 is provided with a column 14 standing up along the vertical direction.

As shown in FIG. 7, structures of the vertical driving unit 30 for vertically driving the vertical moving member 20 are installed inside the column 14, and these are normally driven by the appearance of the column 14. Is concealed.

The vertical movement member 20 is partially connected to the column 14 in a direction crossing the column 14 and is moved along the vertical direction on the column 14 as shown in FIGS. 4 and 5.

As will be described in detail below, the vertical movement member 20 has a structure such as, for example, a stencil coupling unit 50, a squeegee coupling unit 60, a knife coupling unit 70, and a left and right moving member 80 except for the loading unit 40. Combined, these structures are moved together in the vertical movement of the vertical movement member 20. Of course, since the scope of the present invention does not need to be limited thereto, the stencil coupling unit 50 may not be connected to the vertical moving member 20.

The up-and-down direction drive part 30 is a structure which implements the movement (drive) of the up-and-down movement member 20 like FIG. 4 and FIG. 5 in the up-down direction.

As illustrated in FIG. 7, the vertical driving unit 30 includes an up and down driving motor 31, an up and down guide part 32 provided along one of the columns 14 along the up and down direction, and one end up and down. Is connected to the moving member 20 and the other end is disposed between the vertical movement block 33 and the movable member 33 and the vertical movement block 33 and the vertical movement block 33 which is movably connected to the vertical guide 32. It is provided with a motion transfer unit 34 for transmitting the rotational movement from the vertical drive motor 31 to the linear movement of the vertical movement block (33).

Due to the structure of the vertical drive unit 30, the vertical drive motor 31 is operated to transfer the rotational movement to the linear motion through the motion transfer unit 34, the power is transferred to the vertical movement block 33. Electrolyte, thereby the vertical movement block 33 can be moved along the vertical guide portion 32 along with the vertical movement member 20 in the vertical direction as shown in FIGS. 4 and 5.

The motion transmitting unit 34 may be a gearbox in which a plurality of gear trains are combined. In addition, the vertical guide 32 and the vertical moving block 33 may be provided by a rail structure or a rack and pinion structure. Whatever the structure is applied, since the vertical movement member 20 is driven by the power source of the vertical drive motor 31, precise position control is possible, and shock and noise may be prevented from being induced during driving.

The loading unit 40 is provided on the upper portion of the apparatus body 10 as a portion to be printed. Any item that can be screen printed on the surface, including the substrate, may belong to the printed object.

The loading unit 40 may be provided in a fixed type, but the present embodiment discloses a structure capable of moving in one direction. That is, the loading unit 40 of the present embodiment is stacked in three layers, for example, the adjacent ones are engaged in a dove tail shape so as to move in the XY plane which is the direction of movement of the left and right moving members 80 or crosses them. A plurality of operation units 42a to 42c are coupled to the movable first to third block members 41a to 41c for each position to manipulate relative positions between the first to third block members 41a to 41c.

Since the first block member 41a at the bottom and the second block member 41b thereon are engaged in the shape of a dove tail, the second and the second block members 41a and the first block member 41a are formed in a dove tail shape. The three block members 41b and 41c are movable, and since the second block member 41b and the third block member 41c thereon are engaged in a dove tail shape, the second block member ( With respect to 41b), the third block member 41c thereon is movable.

Therefore, the printing object loaded on the third block member 41c can be easily moved. Of course, since the print object will not be shaken during printing, the loading unit 40 will be further provided with a means for supporting the print object, the description thereof will be omitted.

The stencil coupling unit 50 is a portion to which the stencil 1 is detachably coupled at one side. As described above, the stencil coupling unit 50 is mounted to the vertical moving member 20 and moved upward and downward with the vertical moving member 20. . The stencil 1 is a plate-shaped body in which the shape of the printing film is patterned as a portion indicated by a dotted line in FIG. 1, and is also called a screen mask.

Considering that it is common that the stencil 1 is made of a rectangular plate body, the stencil coupling unit 50 is symmetrically disposed at both end regions of the vertical moving member 20 as the same structure, so that the stencil 1 is formed at both sides. It is desirable to support it.

In addition, in view of the fact that the sizes of the stencils 1 are different from each other, the stencil coupling unit 50 is advantageously provided to be individually movable on the vertical movement member 20 rather than the fixed position type.

As shown in detail in FIGS. 4 to 6, the long hole 31 is formed in the vertical moving member 20, and the locker 51 is fixed or released to the long hole 31 area in the stencil coupling unit 50. Then, after adjusting the position of the stencil coupling unit 50 on the long hole 31 by releasing the rocker 51, it is possible to freely adjust the position of the stencil coupling unit 50 by tightening the rocker 51 again. On the other hand, the position adjustment with respect to the stencil coupling unit 50 is sufficiently possible in the front and rear directions of FIGS. 4 to 6 as well as the left and right directions shown in FIGS.

The stencil coupling unit 50 to which such a structure is added includes a holder 52 in which the end region of the stencil 1 is partially accommodated, and a stencil provided in the holder 52 and partially accommodated in the holder 52. And a pressure plate 53 for urging the end of (1) to one side wall in the holder 52, and a bolt member 54 connected to the pressure plate 53 to move the pressure plate 53. Accordingly, the stencil 1 can be easily assembled at the position by inserting the end of the stencil 1 into the holder 52 and then tightening the bolt member 54 to move the pressure plate 53.

The squeegee coupling unit 60 is a portion to which the squeegee 2 is detachably coupled, and the knife coupling unit 70 is a portion to which the knife 3 is detachably coupled.

The squeegee 2 serves to compress the paste applied on the stencil 1, and the knife 3 pushes the ink pushed to one side by the squeegee in the opposite direction after the operation of the squeegee 2, and thus the surface of the stencil 1 It serves to apply uniformly to.

As described above, except that the squeegee 2 and the knife 3 have different roles and different shapes and materials, the squeegee coupling unit 60 and the knife coupling unit 70 have a substantially similar structure. That is, they are coupled to the fixtures 61 and 71 with the fixtures 61 and 71 and the squeegee 2 and the knife 3 interposed therebetween, together with the fixtures 61 and 71 and the squeegee 2 and the knife. Moving bodies 62 and 72 supporting (3) are provided. The movable bodies 62 and 72 may have a structure that is completely separated from the stationary bodies 61 and 71.

The squeegee coupling unit 60 and the knife coupling unit 70 are both coupled to the left and right moving members 80 together. Therefore, the squeegee coupling unit 60 and the knife coupling unit 70 are moved together when the left and right moving members 80 move in the left and right directions.

However, the squeegee 2 and the knife 3 are not to be in contact with the surface of the stencil 1 at the same time. That is, since the operation of the squeegee 2 and the knife 3 must proceed sequentially with each other, the squeegee 2 and the knife 3 are combined individually and organically. Should be driven up / down.

To this end, the squeegee up / down driving member 65 and the knife up / down driving member 75 are further provided. The squeegee up / down drive member 65 and the knife up / down drive member 75 are coupled to the left and right moving members 80 together with the squeegee coupling unit 60 and the knife coupling unit 70 to move the left and right moving members 80. Works with For reference, the squeegee 2 and the knife 3 are generally assembled in a slightly inclined state as shown in the drawing.

As described above, the left and right moving members 80, in particular, are partially connected to the vertical moving member 20 as a part for supporting the squeegee coupling unit 60 and the knife coupling unit 70, and thus the squeegee coupling unit 60. And the knife coupling units 70 are moved along the left and right directions on the vertical moving member 20 as shown in FIG. 6.

The left and right direction driving unit 90 provided for the left and right direction driving of the left and right moving member 80 is applied to the timing belt 94 structure unlike the structure of the up and down direction driving unit 30. Of course, since this is only one embodiment, the structure of the left and right driving unit 90 may be applied in the same way as the structure of the up and down driving unit 30.

As illustrated in FIGS. 8 to 10, the left and right direction driving unit 90 includes a drive timing pulley 92 to which the left and right direction driving motor 91, the left and right direction driving motor 91 are connected, and a driving timing. A driven timing pulley 93 disposed at a position spaced apart from the pulley 92, a timing belt 94 for connecting the driven and driven timing pulleys 92 and 93 in a closed loop shape, and one end of the left and right moving member 80; ) And the other end has a left and right moving block 95 which is movably coupled to the timing belt 94.

Due to the structure of the left and right direction driving unit 90, when the left and right direction driving motor 91 is operated and the timing belt 94 is circulated by the driving and driven timing pulleys 92 and 93, the timing belt 94 is connected to the timing belt 94. As the left and right moving block 95 is moved along the timing belt 94, the left and right moving members 80 can be moved as a result.

At this time, in order to guide the stable movement of the left and right moving member 80, as shown in Figure 8, the guide rail portion 96 is further provided in the coupling region of the vertical moving member 20 and the left and right moving member 80. . Guide rail portion 96 is applied to the upper and lower sides of the left and right moving member 80 as a pair to guide the stable movement of the left and right moving member (80).

Finally, the controller 100 controls the operation of the up and down direction driver 30 and the left and right direction driver 90.

The controller 100 may include a central processing unit (CPU), a memory (MEMORY), and a support circuit (SUPPORT CIRCUIT). The central processing unit (CPU) may be one of various computer processors that can be industrially applied to control the screen printer of the present embodiment. The memory is connected to the CPU. The memory may be installed locally or remotely as a computer readable recording medium, and may include at least one or more readily available types such as, for example, random access memory (RAM), ROM, floppy disk, hard disk, or any digital storage form. Memory. SUPPORT CIRCUIT is operatively coupled to the CPU to support the typical operation of the processor. Such support circuits may include cache, power supplies, clock circuits, input / output circuits, subsystems, and the like.

The operation of the screen printer having such a configuration will be briefly described as follows.

The printing object is loaded into the loading unit 40, and the stencil 1 is coupled to the stencil coupling unit 50 thereon. The relative position of the stencil 1 or the squeegee 2 and the knife 3 with respect to the print object may be performed while adjusting the positions of the loading unit 40 and the stencil coupling unit 50.

When the preparation is completed, the controller 100 operates the motor 31 for driving the up and down direction. When the up-and-down direction driving motor 31 is operated to convert the rotational movement into a linear movement through the motion transfer unit 34, this power is transmitted to the vertical movement block 33, whereby the vertical movement block 33 is It moves downward along the up-and-down guide part 32 with the up-and-down moving member 20 as shown in FIG.

Subsequently, when the timing belt 94 is circulated by the driving and driven timing pulleys 92 and 93 by the controller 100, the left and right moving blocks connected to the timing belt 94 are driven. As the 95 is moved along the timing belt 94, the left and right moving members 80 are moved, whereby the squeegee 2 compresses the paste applied on the stencil 1. At this time, the knife 3 is located above the squeegee 2.

When the operation of the squeegee 2 is completed, the ink is transferred to the printing surface to perform a printing operation, the squeegee 2 is raised and the knife 3 is lowered. Through the control of the left and right drive unit 90 of the controller 100, the knife 3 pushes ink onto the surface of the stencil 1 so as to uniformly coat the print job, thereby returning the print job to an initial state.

In particular, since these operations are all performed by the up-down direction driving motor 31 and the left-right direction driving motor 91, more precise position control is possible as well as preventing shock and noise from being generated during driving. can do.

As described above, according to the present embodiment, it is possible to improve the accuracy in the print job through precise position control, and to prevent the occurrence of shock and noise during driving.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

10: device body 11: wheel
12: stopper 14: column
20: up and down moving member 30: up and down direction driving portion
31: Up and down direction drive motor 32: Up and down guide portion
33: up and down moving block 34: exercise transmission unit
40: loading unit 41a ~ 41c: block member
42a ~ 42c: operation unit 50: stencil coupling unit
51: rocker 52: holder
53 pressure plate 54 bolt member
60: squeegee coupling unit 65: squeegee up / down drive member
70: knife coupling unit 75: knife up / down drive member
80: left and right moving member 90: left and right driving unit
91: left and right drive motor 92: drive timing pulley
93: driven timing pulley 94: timing belt
95: left and right moving block 100: controller

Claims (8)

The apparatus main body is provided on one side of the column standing up along the vertical direction;
An up and down moving member partially connected to the column in a direction crossing the column and movable in an up and down direction on the column;
An up and down driving unit having a vertical driving motor and driving the up and down moving member in an up and down direction;
A loading unit provided on an upper portion of the apparatus main body and loaded with a printing object;
A stencil coupling unit mounted to the vertical moving member and detachably coupled to the stencil at one side thereof;
A squeegee coupling unit to which a squeegee for pressing a paste applied on the stencil is detachably coupled;
A left and right moving member supporting the squeegee coupling unit but partially connected to the up and down moving member and movable along the left and right direction on the up and down moving member; And
It includes a left and right driving motor, and includes a left and right driving unit for driving the left and right moving members in the left and right directions,
The stencil coupling unit is arranged symmetrically in the same structure in both ends of the vertical movement member, the screen printer, characterized in that provided on the vertical movement member to be moved individually. The method of claim 1,
The vertical drive unit,
A vertical guide part provided along one of the columns in an up and down direction;
A vertical movement block having one end connected to the vertical moving member and the other end movably connected to the vertical guide part; And
And a movement transfer unit disposed between the up-down direction driving motor and the up-down moving block and transmitting a rotational motion from the up-down direction driving motor to the linear movement of the up-down moving block. The method of claim 1,
The left and right direction driving unit,
A driving timing pulley to which the left and right driving motors are connected;
A driven timing pulley disposed at a position spaced apart from the driving timing pulley;
A timing belt connecting the driving and driven timing pulleys in a closed loop shape; And
One end is connected to the left and right moving members and the other end comprises a left and right moving block movably coupled to the timing belt. The method of claim 1,
A knife coupling unit coupled to the left and right moving members at a position adjacent to the squeegee coupling unit and detachable from the knife at an end thereof;
A squeegee up / down driving member provided on the left and right moving members to drive the squeegee coupling unit up / down; And
And a knife up / down driving member provided on the left and right moving members to drive the knife coupling unit up / down. The method of claim 1,
The stencil coupling unit,
A holder in which the end region of the stencil is partially received;
A pressure plate provided around the holder to press an end portion of the stencil partially accommodated in the holder to one side wall of the holder; And
And a bolt member connected to the pressure plate to move the pressure plate. delete The method of claim 1,
The loading unit,
A plurality of block members stacked in layers in a plurality of stages and adjacent to each other in a dove tail shape to be movable in a moving direction or a direction crossing the left and right moving members; And
And a plurality of operation units coupled to the plurality of block members for each position to manipulate relative positions between the plurality of block members. The method of claim 1,
And a controller for controlling the operation of the vertical drive unit and the horizontal drive unit.

Images