DE6750009U - PNEUMATIC CLAMPING DEVICE - Google Patents

Description

"SIISEDRUCi [RIHG Geaelisdtex with limited liability

7.146 Z-arnra / Württo

"Aug. 1, 1968 A 30 572

■ - Pa-3umatis £ hes_ tensioning device

The innovation relates to sin. Pneumatic ~ λ economy device gum clamping ύοώ. Screen printing fabrics like

Z = B ₀ silk gases »Nylongaaej polyester gauze or metal gases * ' ^r

Tensioning devices - polygamy would have _ΰ the sieve = Templates = =. . frame to clamp ₈ ensure au a pasaergenauen screen printing, are already known ₉ also particularly such devices ₉ do not matic with pneu · =) actuating work ₅ In the latter roughened it is zobo necessary that means in different operations in succession in each case two sides of the screen fabric Kadel strips or the like =, devices are biased ₉ before the endgiil "· tensioning term by pressing the stencil frame

2 -

can be done in the tissue ₀

In other known tensioning devices, clamping rails are provided for the screen printing frame ₉ and a number of retaining clips are required for each of the clamping _{rails 9} with the help of which the clamping rails can be pressed together against the frame located in their center

Furthermore, a pneumatically operating clamping device known become ^ wherein the inlaid fabric on its all external surfaces with a plurality of sealing clips for attaching is "before it can be introduced the Spannv" organg _o chain UIID weft of the fabric are then tensioned pneumatically in successive operations, 80 that in a further operation the ^Anl: re »f» s of a stencil frame to da3 tissue au its complete Ausspannung can take place *

Ea has now been found ₉ that with the accurate unloading of the corners dleB screen printing fabric is possible with the prior art to count serving clamping devices hardly and that esi therefore the pot so that it no longer usable isto often come to tearing dßfl (Jswehea

The innovation is therefore based on the task ₉ to create a pneumatic tensioning device * in which such disadvantages do not occur and which enables a perfect stretching of screen printing fabrics of all kinds, especially at their corners o

This task is met according to the innovation in the manner? that to are provided on the peripheral edges of a screen-clamping frame arranged Spani} kl "ppen sit straight SpunnfläoSisn for the clamping frame corners at right angles formed tenter clips in addition to the feed, a second pneumatic circuit _s is used to separate" clips from Druckluftkreia for the lateral clamping ©

As a result of the newer arrangement, the possibility is offered ₉ first of all to achieve a complete parallel stretching of the individual fabric threads by means of the right-angled tensioning clips ₉ before the further tensioning process takes place by gripping them with the lateral tensioning clips ₀ Since as a result of the first work step, all of the fabric corners are also stretched out? it may in other Arbeicsgang to kednem tearing of the tissue longer come _o

According to an advantageous further development of the innovation, all of the tensioning clamps of the tensioning device each have a ball bearing on one of their faces for lateral displacement , which ensures optimal adaptability of the tensioning clamps =

It is also provided ₉ that the tensioning clips each have a reading scale calibrated as a percentage of the fabric tension,

For a more detailed explanation of the renewal-related clamping device are only used for compliance

5 -

«. 5 -

games performing drawings _e of those

1 a tensioning device in plan view and

2 one of the ones used with the device

⁽ Spannaluppen in a side view

demonstrate.

In the schematically drawn arrangement of the device parts according to the Pigd, pneumatically actuated clamping clips 2 are located on each outside or at each corner of a square screen printing stencil I3T ₉ have at their facing the frame ends just Spanni'lächen to ₉ during the four frame corners eye arranged tenter clips 5 are each e'i \ ne f \ correspondingly rectangular shape besitsen ₀ to imrehfühnmg the tensioning operations for an inserted into the fixture tissue with the aid of Clamping units 2 and 3 are used for two separate pneumatic circuits 4 and 5? to which manometers 6 and 7 belong,

When the device is put into operation, the angled tension clamps are first pen 3 is moved up to the frame corners and an even stretching of the 3 fabric is carried out = then by actuating compressed air in circle 4, the circumferential edges of the frame 1 arranged normal * Tension clips 2 * with their egg then in a white

direct operation the usual margins of the tissue vonstatten gehto It can hold up to extreme values of tensile _s be approached as a rice · = the according tissue sen the · in the first pass resulted Sckenansspannung is practically completely excluded _o Upon completion of Ausspann · = 'operations is the Gauze glued or stapled onto the screen-printing stencil frames

S ¹ Ig 2 shows one of the clamping clips 2 in the side

View ο There is a ball == on one of the front faces Bearing 8 arranged for lateral movement of the tensioning clamp - A compressed air cylinder is denoted by 9 -

Protection claims

Claims (1)

Ρ.Α.Ί52 335-2.8.6Β A 30 SIEBDRUCKRXHG GoffloboHo A goo 572 £ amm / Wiirtto Protection claims =) Pneumatic clamping device for clamping Screen printing _{fabrics 9,} characterized in that, in addition to the clamping clips (2) with straight clamping surfaces for the clamping frame corners, which are arranged on the peripheral edges of a clamping frame (1), there are each right-angled clamping clips (3) ₉ for the advance of which a second compressed air _{circuit (5) is used ΰ} which is separated from the pressure circuit (4) for the lateral Sjpannfeluppen (2) _o 2o) Clamping device according to claim 1 _B, characterized in that the iäpannkluppent (2 ₉ 5) bestitzejio on one of its front sides in each case a ball bearing for lateral displacement 750009 Klr.wvUt This 0nü% ge juJJutiul IIÜ Bcnuteonspr]) fst the züttHzf efngifetcfite; ste deviates from the 3-way recording of the documents originally submitted. Db rr ¹ r. ·. · B-: · ..ϋ · ιί · Λ '- / · wi- - ^ q Is nl.-.ht tufted. QIe documents that were originally unaligned bofinöt-n si · ,: in ·: ·> · ■ .. rs. .: · · Vra Nachweli legal interest can be viewed free of charge. Aul Aniray ι *. ^ ·> IiL.v ^ .. ouai roiux- ^ ien or FIIm- wgative to da «OtöotK« Ρ »Λ« ι gsUetat. German Potanrarn, Gebrauohjrnuswntille.