JP6510845B2 - Screen printing machine - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a screen printing machine provided with an alignment device so that printing can be performed at an accurate position on a workpiece that is a substrate when screen printing.

  Conventionally, when performing screen printing on various types of work, for example, the work and the form frame are processed as processing before printing in order to match the screen printing frame to the accurate printing position with respect to the work held on the printing table. The plate frame is moved and rotated with respect to the work in the X direction, Y direction and further at θ angle to align. Therefore, there is a screen printer shown in, for example, Patent Document 1 in which an alignment device is arranged in a printing unit of the screen printer. An alignment unit body is provided on a support column disposed in a printing unit provided with a squeegee unit provided with a squeegee, and a support frame on which a plate frame is fixed and supported is displayed on each of work and frame by the alignment unit body The support frame supporting the plate frame is moved, rotated and aligned so as to align the alignment marks. This enables high-precision printing without moving the work after alignment.

  On the other hand, there is a screen printing method and apparatus shown in Patent Document 2, and according to this, a squeegee and a support roll (printing roller) are disposed opposite to each other through a screen to support a printing sheet as a web-like work. It is assumed that the squeegee is moved in the surface direction of the screen together with the support roll to perform screen printing on the web-like work while being placed in a bent state on the circumferential surface of the roll and contacting the screen.

Patent No. 5023118 gazette Japanese Patent Application Laid-Open No. 9-300579

  The aligning device according to the above-mentioned Patent Document 1 is provided with a squeegee provided with a support frame for supporting the plate frame and a squeegee arranged in the printing unit in order to align the plate frame of the screen and the work upon alignment. By integrally moving and rotating the unit, the unit is configured to be aligned with the work. Then, when screen printing is performed on the web-like work as shown in Patent Document 2, the squeegee (squeegee unit) is applied to apply the aligning device in the screen printing device shown in Patent Document 1 as the aligning device. Since the screen frame of the screen, and also the support roll must be integrally configured and aligned on the upper and lower sides of the work, the structure must be complicated. Moreover, it is also difficult to make the squeegee and the support roll face each other so as to align them.

  Therefore, the present invention has been created in view of the conventional circumstances as described above, and its object is, for example, the case of performing screen printing on a web-like work as shown in Patent Document 2, or plate-like It is also possible to match the screen printing plate to the correct printing position for these workpieces, and to provide a screen printing machine equipped with a matching device that can be matched with a simple configuration. is there.

In order to solve the problems described above, in the present invention, to add the reference numerals in the embodiment for carrying out the invention to be described later, the screen version S is In the screen printing machine for screen printing with the squeegee 22 of the squeegee unit 20 after alignment with the work W, the squeegee unit 20 itself is fixedly disposed in the printing section without being moved, and the squeegee unit 20 Separately, the screen plate support mechanism 10 is provided in the printing unit, and the screen plate support mechanism 10 is configured to move the screen plate S supported by the screen plate support mechanism 10 at a predetermined position with respect to the work W Alignment means 13 for alignment and fixing means 16 for fixing the screen plate S after alignment are provided, at the time of alignment Moving only the screen printing plate S, the squeegee 22 is characterized that you have not to move.
Wherein the lower side of the screen plate S being supported by the screen plate supporting mechanism 10, the printing Russia over La 3 0 to press the workpiece W that is disposed below the screen plate S on the screen printing plate S vertically movably, In addition, it can be arranged to move along with the squeegee 22.
The workpiece W can be configured as a web continuously supplied below the screen plate S.
The screen printing plate support mechanism 10 comprises a support 11 disposed opposite to the lower part of the left and right support frames 4 mounted between the frame supports 3 arranged upright in the printing section, and the support 11 And a plate receiving member 12 for slidably holding the screen plate S supported therebetween, the alignment means 13 printing position of the screen plate S placed on the plate receiving member 12 with respect to the work W Can be configured to match.
The aligning means 13 moves the peripheral frame in the left-right direction in the same manner as the left and right X-axis alignment units 14 disposed on the left and right supports respectively so as to move the peripheral frame of the screen plate S in the front-rear direction. As described above, the Y-axis alignment unit 15 may be connected to at least one of the left and right X-axis alignment units 14.

In the screen printer according to the present invention configured as described above, the alignment means 13 provided in the screen plate support mechanism 10 is configured separately from the squeegee unit 20 in the printing unit of the screen printer main body 1 Only the screen plate S supported by the screen plate support mechanism 10 which is moving is rotationally moved back and forth, to the left and right, and further to the print position relative to the work W to be carried in.
Even if the work W to be carried in is in the form of a web or in the form of a plate, only the screen plate S needs to be aligned. With this alignment, the alignment operation by moving the squeegee unit 20 and the printing roller 30 is required. The entire configuration is simplified by eliminating the need to connect these components.
Workpiece W of the web-like is continuously fed to the screen printing plate S downward, and screen printed in a state of being pressed against the screen plate S lift to the print Russia over La 3 0 which moves the running with the squeegee 22, the screen after printing Smoothly separate from the plate S.
The screen plate S at the time of alignment by the operation of the alignment means 13 is mounted on the plate receiving member 12, thereby facilitating the slide movement of the back, forth, left and right and further rotation, and aligning and adjusting to the correct position, fixing means 16 firmly supports the screen version S after alignment in the screen version support mechanism 10.
The X-axis alignment unit 14 in the alignment means 13 moves the left and right sides of the peripheral frame of the screen plate S in, for example, the front and back direction and further rotates the Y-axis alignment unit 15 moves the screen plate S in the left and right direction. Match correctly to W.

  Since the present invention is configured as described above, the screen plate S supported by the printing unit in the screen printing machine main body 1 is positioned at an accurate position with respect to the work W carried under the screen plate S. Since alignment is possible and movement adjustment of the squeegee unit 20 itself is not necessary, and only the screen plate S may be rotated back and forth, left and right, and so on, it is structurally simple and maintenance and inspection is easy. Further, the work W itself is in the form of a web which is intermittently or continuously supplied, whether in the form of a web, or in the form of a plate, the printing roller 30 or printing table which supports them from below, and the screen printing plate support mechanism 10 itself. There is no need to adjust the movement according to the alignment operation.

  That is, in the present invention, the squeegee unit 20 is fixed and disposed in the printing unit without moving it, and the screen plate support mechanism 10 is provided in the printing unit separately from the squeegee unit 20. , Alignment means 13 for moving the screen plate S supported by the screen plate support mechanism 10 at a predetermined position relative to the work W, and fixing means 16 for fixing the screen plate S after alignment. This is because only the screen version S is moved during alignment, and the squeegee 22 is not moved, whereby the alignment operation of the screen version S with respect to the work W can be simplified and facilitated.

  When the work W is in the form of a web, the work W disposed below the screen plate S is squeegee 22 located above the screen plate S and a roller-like printing roller 30 supporting the work W from below. Even if printing is carried out, the alignment operation of the screen plate S with respect to the work W is performed only by moving and adjusting the screen plate S by the alignment means 13 of the screen plate support mechanism 10 configured separately from the squeegee unit 20. The alignment adjustment is not necessary for any of the unit 20 and the printing roller 30, and the configuration can be simplified.

  Moreover, the present invention is not limited to the case where the work W is in the form of a web, but can be similarly implemented by supporting the work W in the form of a plate by the printing table instead of the printing roller 30 in the form of a roller.

  The alignment means 13 provided in the screen printing machine main body 1 includes the left and right X-axis alignment units 14 and the Y-axis alignment unit 15 so that the X-axis alignment units 14 can be moved in the same or reverse longitudinal direction. , Enables the screen plate S itself to be rotated in the front and back direction or at a predetermined angle, and the screen plate S can be moved in the left and right direction by the movement operation of the Y axis alignment unit 15 in the left and right direction. S can be accurately positioned relative to the work W.

Further, the matching operation of the subscription over emissions plate S by aligning means 13, because a plate receiving screen plate S on the member 12 which is provided on the screen plate supporting mechanism 10 in the slidably are placed, aligning means 13 Thus, the screen plate S can be reliably fixed by the fixing means 16 after the alignment.

  The reference numerals attached in each of the above-mentioned means for solving the problems and the effects of the invention are given to facilitate the reference with the parts indicating the respective parts described in the drawings. The present invention is not limited to the structures, shapes, and the like indicated by the symbols in the description, the drawings, and the like.

It is a top view which shows one form for implementing this invention. It is an AA line arrow line view in FIG. 1 similarly. It is a BB arrow line view in FIG. 1 similarly. It is also a side view.

  Hereinafter, one embodiment for carrying out the present invention will be described with reference to the drawings, and reference numeral 1 shown in the figure is screen printing for a continuous web-like work W which is a carried-in substrate, for example. It is a screen printer main body which carries out and carries out the work W after screen printing. The printing unit in the screen printing machine main body 1 mounts the support frame 4 along the front and rear direction with the left and right portions of the frame support 3 which is formed at the four corners of the printing unit frame 2 forming the printing unit. Become.

  Then, on the support frame 4 of this illustrated example, the screen printing plate support mechanism 10 for supporting the screen printing plate S by aligning the printing position with the workpiece W, and for the workpiece W carried under the screen printing plate S. A squeegee 22 is provided with a squeegee 22 for applying and printing ink and other predetermined coating agents from the screen plate S, and a scraper 23 for leveling the coating agent and the like after printing, and the squeegee unit 20 travels back and forth along the support frame 4 The printing roller 30, which travels back and forth with the squeegee 22, is supported so as to press and support the work W supplied to the lower side of the screen plate S from the lower side to the squeegee 22 side.

Screen plate support mechanism 10, by positioning under the squeegee unit 20, the squeegee unit 20 with a squeegee 22 be configured separately, at the time of alignment, only the screen plate supporting mechanism 10 of this is not moved and adjusted squeegee unit 20 is moved and rotated separately. The screen printing plate support mechanism 10 is, for example, an L-shaped support 11 disposed opposite to each other below the left and right support frames 4 as shown, and the support 11 between the left and right supports 11. A plate receiving member 12 such as a free ball bearing disposed on the support 11 to move and place the screen plate S to be movable, and the screen plate S placed on the plate receiving member 12 against the work W An alignment means 13 is provided which is aligned by rotating, moving in front, back, left, and right corresponding to the printing position, and a fixing means 16 for fixing the screen S after alignment.

  The support 11 is connected to the bottom surface of the support frame 4 by the upright portion thereof, and is adapted to support the left and right frame portions of the peripheral frame of the screen S by the horizontal portion. Further, the screen plate S itself is made to align with the printing position with respect to the work W carried under the screen plate S by being rotated at a predetermined angle by moving any one side back and forth or left and right.

  The plate receiving member 12, ie, the free ball bearing, for example, is formed by embedding and forming a ball which can be freely rotated in a partially out state on the upper surface of a pedestal fixed to the upper surface of the horizontal portion of the support 11. While the placed screen plate S is placed, it is slidable in a free direction.

  In the illustrated example, the alignment means 13 supports the left and right supports 11 so as to move the left and right frame portions of the surrounding frame integrated in the front and back direction and hold them integrally in the screen plate S. The left and right X-axis alignment units 14 arranged respectively, and the Y-axis alignment unit 15 connected to at least one of the left and right X-axis alignment units 14 to similarly move the surrounding frame in the left and right direction It consists of These alignment units 14 and 15 are driven by a drive source and fastened to the peripheral frame so as to be moved by, for example, a rotating ball screw by the drive source, or a movement for forcing or pulling and moving the peripheral frame It is a known one equipped with a body. When aligning the peripheral frame in the front-rear direction, move the moving body of the X axis alignment unit 14 in the same direction, and when aligning the peripheral frame in the rotational direction, move the moving bodies of the left and right X axis alignment unit 14 in different directions. Alternatively, only one of the left and right X-axis alignment units 14 is moved. In addition, for example, a CCD, for example, a CCD, may be used to match the same alignment mark displayed on the screen S with the alignment mark displayed on the workpiece W, for example By imaging with a camera (not shown) or the like and optically processing it, the alignment control mechanism (not shown) for controlling the movement of the screen S is performed.

  The fixing means 16 is disposed above the screen plate S, for example, so as to press the peripheral frame of the screen plate S toward the plate receiving member 12; It has a body. The fixing means 16 is disposed above or near the position of the plate receiving member 12 as shown, and pressing the screen plate S against the upper surface of the plate receiving member 12 allows the screen plates to be formed on the left and right supports 11. It is made to fix firmly, without moving S.

  The squeegee unit 20 is lowered to the squeegee bar 21 mounted separately from the screen plate support mechanism 10 between the upper portions of the left and right support frames 4 when the printing operation of the squeegee unit 20 itself is advanced and the screen plate S is There is provided a squeegee 22 which rubs the upper side, a scraper 23 which descends to move in contact with the screen plate S at the time of retraction of the ink leveling operation, and the squeegee 22 and scraper 23 stand by at the raised position when not in operation. doing.

The printing roller 30 is provided on the printing unit frame 2 below the screen printing plate support mechanism 10 so that it can be moved up and down along with the movement of the squeegee 22 in the back and forth direction, the workpiece W, at the time of printing by the squeegee 22 are as both travel with the squeegee 22 at the raised position to press from below the screen plate S underside.

  Naturally, the printing roller 30 is provided when printing on a web-like work W, and when the work W is a plate-like, eg, circuit board, a board-like printing table is arranged (not shown) ).

  Next, an example of the operation will be described. A web-like work W continuously supplied from a web supply mechanism (not shown) is bridged over the printing roller 30 and taken up by a take-up mechanism (not shown). On the other hand, a predetermined screen plate S is set in the screen plate support mechanism 10 in the printing unit frame 2. The alignment control mechanism detects whether the set position corresponds to the printing position for the work W by the alignment control mechanism, and detects that the position is out of alignment. 14 and the Y-axis alignment unit 15 operate to position the screen plate S by rotating it back and forth, left and right, and aligning it with the alignment mark displayed on the workpiece W. In this alignment operation, only the screen S is adjusted for movement, and the squeegee unit 20 itself and further the squeegee 22 itself are not moved during this movement adjustment. After the alignment is completed, the squeegee 22 and scraper 23 in the squeegee unit 20 are activated, screen printing is performed on the work W, and the work W portion subjected to printing is conveyed to the winding mechanism side, and the next work W The part is carried in again and printed, and in the case of a continuous web-like work W, it is intermittently transported according to the screen printing operation.

  This is similarly performed when the work W is in the form of a plate, and the printing process is sequentially performed.

S: Screen version W: Work 1: Screen printing machine main body 2: printing unit frame 3: frame support 4: support frame 10: screen version support mechanism 11: support 12: plate receiving member 13: alignment means 14: X axis alignment Unit 15 Y-axis alignment unit 16 Fixing means 20 Squeegee unit 21 Squeegee bar 22 Squeegee 23 Scraper 30 Printing roller

Claims (4)

After the screen plate is aligned with the work in the printing unit with respect to the work carried in, the squeegee unit itself is fixedly disposed in the printing unit without being moved in the screen printing machine for screen printing with the squeegee of the squeegee And a screen plate support mechanism is provided in the printing unit separately from the squeegee unit, the screen plate support mechanism being movable and supporting the screen plate supported by the screen plate support mechanism to a workpiece and matching means for matching the predetermined position, and a fixing means for fixing the screen plate after alignment provided for, at the time of alignment by moving only the screen plate, the squeegee is Yes so as not to move, the screen plate supporting mechanism The right and left supports mounted between the frame support posts standing on the printing unit And a plate receiving member slidably holding the screen plate supported between the supports, wherein the aligning means is the plate receiving member. screen printing machine, characterized in Citea Rukoto to match the screen plate placed above the printing position relative to the workpiece. Below the screen plate to be supported by the screen plate supporting mechanism, a workpiece that is disposed below the front Symbol screen plate at the time of printing vertically movably printing Russia over La pressing the screen printing plate, or the printing screen printing machine according to claim 1 that is arranged to move the traveling with prior Symbol squeegee rollers.   The screen printing machine according to claim 1, wherein the work is in the form of a web continuously supplied below the screen plate. The alignment means is configured to move left and right X-axis alignment units disposed on the left and right supports respectively so as to move the frame around the screen plate in the front and back direction, and to move the frame around in the left and right direction. The screen printing machine according to any one of claims 1 to 3, further comprising: a Y-axis aligning unit connected to at least one of the X-axis aligning units.

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