JP2007268733A - Screen fabric stretching device for manufacturing screen plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen fabric stretching device which reduces distortion on the occasion of clamping and makes operability excellent, even when a screen plate is large-sized, and which enables saving of space. <P>SOLUTION: The screen fabric stretching device 1 has a screen fabric stretching surface S inclined to a device installation surface 7, a stretching part 9 which stretches a screen along the screen fabric stretching surface, and a screen supply part 11 which is disposed above the stretching part and supplies the screen to the stretching part, while supporting the screen thereabove. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tension device for producing a screen plate.

  As a screen plate used for screen printing, there is a combination-stretched screen plate (see Patent Document 1). The combination-stretched screen plate has both elasticity and rigidity suitable for a screen plate, and has a printing screen in the center of the screen plate and a support screen in the periphery thereof.

  The printing screen at the center has rigidity suitable for high-precision printing while maintaining the shape and dimensions of the printing section. In addition, the support screen in the peripheral portion generates elasticity suitable for bringing the printing screen closer to the printing target and realizing good plate separation while maintaining a state of being printed with high accuracy.

  In the production of such a combination-clad screen plate, as shown in Patent Document 1, usually, a support screen is horizontally arranged and stretched, and below that is for printing smaller than the support screen. The screen is placed on a horizontal plate, the plate is raised, and a printing screen is attached to the lower surface of the support screen to bond them together. And the center part which overlaps with the screen for printing among the parts of a support body screen is cut off. As a result, a combination-stretched screen plate having a printing screen having a rectangular shape in a plan view at the center and a support screen having a ring shape in a plan view around it is obtained.

However, in the above-described existing manufacturing mode of the screen plate, the following problems may occur with the recent increase in size of the screen plate.
That is,
i) distortion tends to occur when each screen is stretched by applying an appropriate tension;
ii) It is difficult for the worker to reach each part of the screen version, and the worker cannot work in an easy posture.
iii) Increasing the size of the screen plate will lead to an increase in the tension device, and the floor space occupied by the device will also increase.
It is a problem.
JP 2000-177262 A

  In view of the above, the present invention solves all of the above three problems i), ii) and iii) at the same time, and suppresses distortion during screen stretching even when the screen plate is large, It is an object of the present invention to provide a tensioning device that can improve workability and save space.

  In order to solve the above-described problems, a tensioning device according to the present invention includes a tensioning surface inclined with respect to a device installation surface, a tensioning unit that stretches a screen along the tensioning surface, and the tensioning device. A screen supply unit that is disposed above the installation unit and supplies the screen to the extension unit while supporting the screen above the extension unit.

  The tensioning device is a tensioning device for a combination-stretched screen plate, and the screen is a support screen, and a feeding table is further provided to supply the printing screen to the support screen. The delivery table may have a mounting surface on which the printing screen is mounted and is inclined with respect to the apparatus installation surface.

  Preferably, the screen supply unit has a roller around which the screen is wound, and supplies the screen to the extension unit by unwinding the screen from the roller at the time of supply.

  According to the present invention described above, even when the screen plate is large, distortion during screen stretching can be suppressed, workability can be improved, and space can be saved.

  The other features of the present invention and the operational effects thereof will be described in more detail with reference to the accompanying drawings.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

  FIG. 1 is a side view schematically showing a configuration of a tensioning device for a combination-stretched screen plate according to the present embodiment. The tension device 1 includes a housing 3, and is placed on the floor surface of the work facility, that is, the device mounting surface 7 via the leg portions 5 provided on the bottom surface of the housing 3.

  Further, description will be made with reference to FIG. FIG. 2 shows the tensioning surface of the tensioning device from the front, that is, a view seen from the arrow II in FIG. With reference to FIG. 1 and FIG. 2, a tension portion 9 is provided on the front surface of the housing 3. The tensioning part 9 stretches the screen along the tension surface, that is, supports the screen in a state where an appropriate tension is applied to the screen. As an example, the extending portion 9 is configured by a clamp mechanism. The clamp mechanisms are arranged at four locations, and are arranged in an arrangement relationship that forms four sides of a rectangle, as shown in FIG.

  As shown in FIG. 1, the tension surface S is a virtual work surface defined by the tension portion 9. The tension surface S is inclined with respect to the apparatus mounting surface 7. In the present embodiment, the rising angle θ formed by the tension surface S and the device mounting surface 7 (although the horizontal is 0 degree) is preferably 50 degrees or more. More specifically, from the viewpoint of preventing distortion due to the action of gravity, which will be described later, improving workability, and saving space, 70 degrees or more is preferable, and conversely, from the viewpoint of using an adhesive for stretching, it is 85 degrees or less. preferable. Therefore, 70 to 85 degrees is optimal.

  A screen supply unit 11 is disposed above the extension unit 9, that is, at a position higher than the extension unit 9. The screen supply unit 11 is fixed to the housing 3 by an appropriate mode not shown. The screen supply unit 11 supports the screen 55 while supporting the screen 55 (hereinafter, clearly referred to as “support body screen” because it relates to the combination-clad screen plate in the present embodiment) while supporting the screen 55. Supply to section 9.

  As a specific example, the screen supply unit 11 includes a roller 13, and a support screen 55 is wound around the roller 13 in advance. At the time of supply, the support screen 55 is wound around the roller 13. The support body screen 55 is supplied to the extending portion 9 by unwinding from the wire 13.

  On the inner side of the housing 3 on the tension surface S, a delivery table 15 is provided. The delivery table 15 has a mounting surface 17 on which a printing screen that constitutes a combination-stretched screen plate together with a support screen 55 is mounted. The mounting surface 17 is also inclined with respect to the device mounting surface 7, that is, a surface set substantially parallel to the tension surface S. Further, the delivery table 15 is movable in a direction substantially orthogonal to the tension surface S, and can slide so as to approach or separate from the tension surface S.

  Next, the configuration of the combination-stretched screen plate manufactured by the above-described tensioning device 1 will be briefly described. FIG. 3 is a perspective view of a combination-stretched screen plate. The combination-stretched screen plate 51 includes a printing screen 53, a support screen 55, and a screen frame 57.

  The printing screen 53 is a mesh member having a rectangular shape in a plan view at a substantially central portion of the combination-stretched screen plate 51. The printing screen 53 is a mesh member made of fibers having a rigidity suitable for performing high-precision printing while maintaining the shape and dimensions of the printing portion. As an example, the printing screen 53 can be made of a metal fiber such as a stainless mesh.

  The support screen 55 is a mesh member that surrounds the printing screen 53 and forms a square ring shape in plan view. The inner peripheral edge of the support screen 55 is connected to the outer peripheral edge of the printing screen 53, and the outer peripheral edge of the support screen 55 is connected to the screen frame 57.

  Further, the support screen 55 has elasticity suitable for bringing the printing screen 53 close to the object to be printed during squeegee and achieving good separation while maintaining a high-precision printed state. It is a mesh member manufactured by the fiber to generate. As an example, the support screen 55 can be made of synthetic resin fibers such as Teflon, polyester, and nylon, metal fibers, or ceramic fibers.

  The screen frame 57 supports the outer peripheral edge of the support screen 55, and is a rigid body that forms a square ring in plan view.

  Next, the manufacturing process of the combination tensioned screen plate by the tension device will be described with reference to FIGS. First, as shown in FIG. 4, the support screen 55 is stretched on the stretched portion 9. More specifically, as shown in FIG. 1, the support screen 55 wound around the roller 13 of the screen supply unit 11 is unwound from the roller 13 and supplied to the front of the extension unit 9. At this time, the support body screen 55 is supported above the extending portion 9, that is, is in a state where it hangs down by its own weight. And the clamp mechanism in the extension part 9 is made to act, and the support body screen 55 is fixed in the state which applied the suitable tension | tensile_strength.

  Next, as shown in FIG. 5, the sending table 15 on which the printing screen 53 is mounted on the mounting surface 17 is moved so as to approach the tension surface S, and the printing screen 53 is moved with respect to the support screen 55. A printing screen 53 is supplied so as to be attached. Subsequently, as shown in FIG. 6, an adhesive 61 is applied to bond the peripheral portion of the printing screen 53 to the support screen 55. Thereafter, as shown in FIG. 7, the portion of the support screen 55 where the printing screen 53 overlaps is removed. Specifically, the unnecessary portion 55a of the support screen 55 located inside the adhesive 61 arranged in an annular shape is cut off. Then, the screen frame 57 is attached to the support screen 55 and is detached from the extending portion 9 to obtain the combination-stretched screen plate 51 shown in FIGS.

  According to such a tension device according to the present embodiment, the support screen 55 unwound from the roller 13 of the screen supply unit 11 is supported in the state where the upper portion is supported above the tension unit 9. It is supplied in front of the installation part 9. For this reason, a uniform load due to gravity acts on the support screen 55, and distortion is suppressed as compared with the case where the support screen 55 is supplied to the extension portion in a horizontal posture. Therefore, the support screen 55 can be stretched in a state where there is no distortion even when clamping is performed at the stretch portion 9.

  In addition, since the tension device 1 is provided with a tension surface S that is not horizontal but is inclined so as to stand up with respect to the device mounting surface 7, the operator can work with the upper body raised. It is possible to easily reach every corner and the posture is easy.

  In addition, even if it corresponds to a large screen plate, the expansion of the depth of the tension device 1 can be suppressed, that is, the expansion of the floor occupation space of the device in the installation facility can be suppressed.

  Moreover, the tensioning device according to the present embodiment can reliably and simultaneously acquire these three beneficial effects.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  First, as an application target of the present invention, the configuration of the screen plate is not limited to the combination-clad screen plate. That is, the present invention can be applied as long as the screen plate manufacturing process includes a tensioning step. Due to this, the steps other than the above-described screen supply step and the stretching step that hang down from above can be appropriately modified from the above-described embodiment.

  As a tension mode in which the screen is tensioned and held, the above-described clamp mode is only an example, and the screen can be tensioned in other modes.

  Moreover, the above-mentioned content about the form of a screen plate is an illustration to the last, Comprising: It does not need to be a planar view rectangle, It is possible to apply this invention with respect to the screen plate of various forms.

It is a side view which shows typically the structure of the tension apparatus of the combination tension screen plate which concerns on embodiment of this invention. It is the figure which looked at the tension surface of the tension apparatus concerning this Embodiment from the arrow II of FIG. It is a perspective view of a combination tension screen screen. It is a figure which shows 1 process of the manufacturing process of the combination tension screen plate by the tension apparatus which concerns on this Embodiment. It is a figure which shows the next process of FIG. It is a figure which shows the next process of FIG. It is a figure which shows the next process of FIG. It is a figure which shows the next process of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stretching apparatus 7 Apparatus mounting surface 9 Stretching part 11 Screen supply part 15 Delivery table 17 Mounting surface 51 Combination tension screen plate 53 Printing screen 55 Support screen S Stretching surface

Claims (3)

A tension surface inclined with respect to the device installation surface;
A tensioning section that stretches the screen along the tension surface;
A tensioning device, comprising: a screen supply unit that is disposed above the stretching unit and supplies the screen to the stretching unit while supporting the screen above the stretching unit. The tension device according to claim 1, wherein the tension device is a combination tension screen plate,
The screen is a support screen;
A feed table for feeding a printing screen to the support screen;
The delivery table is a mounting surface on which the printing screen is mounted and has a mounting surface inclined with respect to the apparatus installation surface.
Tension device. The tensioning device according to claim 1 or 2,
The screen supply unit has a roller around which the screen is wound, and supplies the screen to the stretching unit by unwinding the screen from the roller at the time of supply.
Tension device.

Images