CN208359680U

CN208359680U - A kind of PCB screen printing forme

Info

Publication number: CN208359680U
Application number: CN201821009662.5U
Authority: CN
Inventors: 黄海峰; 姚尧
Original assignee: Wanyuan Kunshan Leads To Electronic Science And Technology Co Ltd
Current assignee: Kunshan wanyuantong Electronic Technology Co.,Ltd.
Priority date: 2018-06-28
Filing date: 2018-06-28
Publication date: 2019-01-11
Anticipated expiration: 2028-06-28

Abstract

The utility model discloses a kind of PCB screen printing formes, at least two tension adjustment mechanisms are equipped with including screen frame ontology described in screen frame ontology and screen cloth, the screen frame ontology includes that 4 head and the tail are fixedly connected sequentially rectangular frame, and the frame has hollow cavity, the tension adjustment mechanism includes being set to the intracorporal inner frame of the chamber and support rod, the support rod has threaded hole, one side of inner frame position corresponding with the threaded hole has reverse thread hole, the tension adjustment mechanism further includes screw rod, the screw rod is also cross threaded hole and reverse thread hole.The tension of the adjustable screen frame of the utility model screen printing forme can effectively be avoided the case where declining after throwing the net due to tension of throwing the net caused by the material of screen frame, also can effectively avoid being died down using middle tension.

Description

A kind of PCB screen printing forme

Technical field

The utility model belongs to screen printing technique field, more particularly to a kind of PCB screen printing forme.

Background technique

Silk-screen printing, which refers to, uses silk screen as version base, and by photosensitive lithographic method, the screen printing forme with picture and text is made, Silk-screen printing is made of top 5 factor, screen printing forme, scraper plate, ink, print station and stock, utilizes screen printing forme picture and text portion Subnetting hole can pass through ink, and non-graphic part mesh cannot be printed through the basic principle of ink, in screen printing when printing Ink is poured into one end of version, applies certain pressure to the ink position on screen printing forme with scraper plate, while another towards screen printing forme End is at the uniform velocity moved, and ink is expressed on stock from the mesh of areas by scraper plate on the move；

Halftone includes screen frame and the silk screen being stretched on screen frame composition, is the important set member of silk-screen printing, on halftone Silk screen tensioning degree has a significant impact to the effect of silk-screen printing, specifically, printing if silk screen tensile force not enough relaxes When brush, there is extra contact position between silk screen and printing workpiece, and be no longer line contact, this can be stained on printing workpiece Extra ink influences printing effect, and tensile force is excessive is easy to be broken silk screen, is not available, in actual conditions, Usually there is following situation, the silk screen being just tensioned has suitable tensile force, but the after a period of time, tensile force of silk screen A part can be lost, and leads to silk screen relaxation, but is opposite with for the silk screen of large area, such slack is with the naked eye to be difficult to Easily observe.

Utility model content

The utility model passes through setting for higher precision mainly solving the technical problems that provide a kind of PCB screen printing forme The quality of the screen printing forme control silk-screen printing of standby and adjustable tension, can improve the prior art to silkscreen precision deficiency The case where, improve yields.

In order to solve the above technical problems, a technical solution of the use of the utility model is as follows:

A kind of PCB screen printing forme, it is characterised in that: be equipped at least two including screen frame ontology described in screen frame ontology and screen cloth Tension adjustment mechanism, and described two tension adjustment mechanisms are respectively arranged at two orthogonal sides of screen frame ontology；

The screen frame ontology includes that 4 head and the tail are fixedly connected sequentially rectangular frame, and the frame have it is hollow Cavity, the tension adjustment mechanism include being set to the intracorporal inner frame of the chamber and support rod, and the inner frame is and the net The identical rectangle of the shape of frame ontology, and the side length of the inside of the inner frame is greater than the side length of the inside of the frame, it is described Support rod is fixed on the intracorporal lateral wall of chamber of a frame, and the support rod has a threaded hole, and the one of the inner frame Side position corresponding with the threaded hole has reverse thread hole, and the tension adjustment mechanism further includes screw rod, the screw rod Also cross threaded hole and reverse thread hole；

The screw rod is rotated, pulls open the support rod and the distance of the skeleton by the screw thread and left-hand thread, from And drive a frame of screen frame ontology side stretching outwardly.

It further says, the second cavity, the reinforcing rib that second cavity passes through X-shaped is equipped in the cavity of the frame It is connected to the frame.

It further says, the tension adjustment mechanism is set in second cavity.

It further says, the section of second cavity is round or rectangle.

It further says, the screen frame ontology is additionally provided with the counter for counting print pass, and the counter is fixed In the side of the direction printing of the frame.

It further says, the counter is mechanical counter.

The utility model has the beneficial effects that

One, the screen frame of the screen printing forme of the utility model is equipped with tension adjustment structure, can be avoided after throwing the net due to net The case where tension of throwing the net caused by the material of frame declines, and after halftone uses certain number, screen cloth is also due to bullet The effect of property can also relax, and impact to printing quality, so the tension adjustment structure of screen frame can also improve tension in use The case where dying down；

Two, it is equipped with reinforcing rib in the screen frame of the silk-screen halftone of the utility model, can effectively improve the intensity of screen frame, and And be set to the intracorporal tension adjustment structure of the second chamber also and can effectively reinforce the intensity of screen frame, also can for the screen frame of Light deformation Play certain correcting；

Three, the silk-screen halftone of the utility model is equipped with counter, because halftone all has certain service life, printing When, scraper one action will stir start-stop counter, so as to get information about the work times of halftone, so as to and When replacement.

The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail It describes in detail bright as after.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the screen printing forme of the utility model；

Fig. 2 is the top view of the screen printing forme of the utility model；

Fig. 3 is the A-A cross-sectional view of Fig. 2；

Fig. 4 is the B-B cross-sectional view of Fig. 3；

The portion the C enlarged drawing of Fig. 5 Fig. 4；

Each section label is as follows in attached drawing:

Screen printing forme 1, screen frame ontology 1.1, frame 1.11, reinforcing rib 1.111, the second cavity 1.112, counter 1.12, Screen cloth 1.2, tension adjustment mechanism 1.3, inner frame 1.31, threaded hole 1.311, reverse thread hole 1.321 and screw rod 1.33.

Specific embodiment

The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear Define.

Embodiment: a kind of PCB screen printing forme, shown in Fig. 1 to Fig. 5: including net as described in screen frame ontology 1.1 and screen cloth 1.2 Frame ontology is equipped at least two tension adjustment mechanisms 1.3, and described two tension adjustment mechanisms are respectively arranged at screen frame ontology Two orthogonal sides；

The screen frame ontology includes the frame 1.11 that 4 head and the tail are fixedly connected sequentially rectangular, and during the frame has Empty cavity, the tension adjustment mechanism include being set to the intracorporal inner frame 1.31 of the chamber and support rod 1.32, the in-seam Frame is rectangle identical with the shape of the screen frame ontology, and the side length of the inside of the inner frame is greater than the inside of the frame Side length, that is, a side of inner frame is supported in the lateral wall of the inner cavity of a frame, and a side of the inner frame Opposite side and the inner sidewall of inner cavity of opposite side frame there is gap, the chamber that the support rod is fixed on a frame is intracorporal Lateral wall, the support rod have threaded hole 1.311, and one side of inner frame position corresponding with the threaded hole has Reverse thread hole 1.321, the tension adjustment mechanism further include screw rod 1.33, and the screw rod is also cross threaded hole and reversed spiral shell Pit；

The inner frame is located in the cavity of the screen frame ontology,

The second cavity 1.112 is equipped in the cavity of the frame, second cavity passes through the reinforcing rib 1.111 of X-shaped It is connected to the frame.

The tension adjustment mechanism is set in second cavity.

The section of second cavity is round or rectangle.

The screen frame ontology is additionally provided with the counter 1.12 for counting print pass, and the counter is fixed on the side The side of the direction printing of frame.

The counter is mechanical counter.

The course of work and working principle of the utility model are as follows:

The screen frame of screen printing forme is equipped with tension adjustment structure, the intracorporal inner frame of chamber and support including being set to screen frame ontology Bar, inner frame and support rod are equipped with screw thread and left-hand thread in corresponding position, are drawn by the screw rod being through in screw thread and left-hand thread The distance of spending strut and inner frame drives the stretching of screen frame, increases the tension of screen frame with this, can effectively avoid throwing the net The case where declining later due to tension of throwing the net caused by the material of screen frame, in addition, after halftone uses certain number, net Cloth also due to elasticity effect can also relax, printing quality is impacted, so the tension adjustment structure of screen frame can also change The case where tension dies down in kind use；

It is equipped with reinforcing rib in the screen frame of silk-screen halftone, can effectively improve the intensity of screen frame, and be set to the second chamber Intracorporal tension adjustment structure also can effectively reinforce the intensity of screen frame, can also play certain correction for the screen frame of Light deformation Effect；

Silk-screen halftone is equipped with counter, because halftone all has certain service life, when printing, scraper one action is just Start-stop counter can be stirred, so as to get information about the work times of halftone, so as to timely replace.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Equivalent structure transformation made based on the specification and figures of the utility model, it is relevant to be applied directly or indirectly in other Technical field is also included in the patent protection scope of the utility model.

Claims

1. a kind of PCB screen printing forme, it is characterised in that: be equipped with including screen frame ontology (1.1) and screen cloth (1.2) the screen frame ontology At least two tension adjustment mechanisms (1.3), and described two tension adjustment mechanisms are respectively arranged at two of screen frame ontology mutually Vertical side；

The screen frame ontology includes that 4 head and the tail are fixedly connected sequentially rectangular frame (1.11), and the frame is with hollow Cavity, the tension adjustment mechanism includes being set to the intracorporal inner frame of the chamber (1.31) and support rod (1.32), described interior Skeleton is rectangle identical with the shape of the screen frame ontology, and the side length of the inside of the inner frame is greater than the interior of the frame The side length of side, the support rod are fixed on the intracorporal lateral wall of chamber of a frame, and the support rod has threaded hole (1.311), one side of inner frame position corresponding with the threaded hole has reverse thread hole (1.321), and described Power adjustment mechanism further includes screw rod (1.33), and the screw rod is also cross threaded hole and reverse thread hole；

The screw rod is rotated, pulls open the support rod and the distance of the skeleton by the screw thread and left-hand thread, thus band Move a frame of screen frame ontology side stretching outwardly.

2. a kind of PCB screen printing forme according to claim 1, it is characterised in that: be equipped with second in the cavity of the frame Cavity (1.112), second cavity are connected to the frame by the reinforcing rib (1.111) of X-shaped.

3. a kind of PCB screen printing forme according to claim 2, it is characterised in that: the tension adjustment mechanism is set to described In second cavity.

4. a kind of PCB screen printing forme according to claim 2, it is characterised in that: the section of second cavity is circle Or rectangle.

5. a kind of PCB screen printing forme according to claim 1, it is characterised in that: the screen frame ontology is additionally provided with for uniting The counter (1.12) of print pass is counted, the counter is fixed on the side of the direction printing of the frame.

6. a kind of PCB screen printing forme according to claim 5, it is characterised in that: the counter is mechanical counter.