FR2752771A1 - Silk=screen printer for textiles, e.g. garments - Google Patents

Abstract

The circular silk-screen printer, e.g. for printing logos or messages on garments, has a carrier arm (14) with two supporting boards (8,9) and a system (3,4,5,6,7,17) which enables the carrier arm to be rotated through 180 degrees to present each of the boards in sequence. The arm is mounted on the lower part of the machine and is rotated by means of a ratchet mechanism (4,5,17) with a peg (3), and a gear (7) on the arm which meshes with a driven gear (6) powered by a pneumatic motor on the machine's upper panel (1). The double-board unit is equipped with side stretchers (10) for garments of different sizes.

Description

DOUBLE ADAPTABLE JEANNETTE
ON ANY TYPE OF CIRCULAR PRINTING MACHINE
Communication all over the world goes through the industrial marking that is serigraphy (or other printing process) on any medium displayed by humans.

 The biggest brands of products have understood this phenomenon, and logos, messages on textiles of all kinds, are a large volume of work and very profitable.

 Producing more, at lower cost, these are the criteria that make you sell.

 The present invention relates to a process facilitating and increasing the production of a screen printing obtained on machines of the circular type tending to improve the final process. It applies to all textiles thus lowering the cost price of a series to be marked on both sides.

 To date, the fabric to be screen printed is installed on a horizontal plate called "jeannette". Only one side is screen printable, it is necessary, in the case of a marking opposite to the previous one, to remove, turn over, put on again to be able to mark on the front.

 The present invention eliminates the operations described above making them unnecessary.

 The support arm "jeannette" single tray, being by our invention, replaced by a mechanically welded arm that can perform an alternating rotation of 1800 and equipped with a "jeannette" double tray.

 The accompanying drawing illustrates the invention: the perspective figure represents the process of the invention. With reference to this drawing, the device improves the work of the operator at the work station. The operations henceforth consist in grasping a jersey, putting it on, positioning it once and for all on a "jeannette" equipped with two rigid horizontal planes 8 and 9, of tightening it by a mechanical system with lateral spacing 11, 12 acting at both on two spacer strips 10 opposite one another.

The control is done by a lever external to the system 11 with the possibility of immobilizing its travel, thus making it possible to adapt to the different sizes. It can be seen in the appended drawing that the lateral parts 10 called spacers are actuated by the lever 11 acting on an arm with angular movement 12.

 It can also be seen that the lever 11 acts on the lateral adjustment of the spacers and allows the latter to be held in position by means of a pressure screw.

 Screen printing is possible on this side, already in position. For marking on the front, there is no need to adjust anything. For this, the upper plate (or lower depending on the type of machine) of the screen printing frame support 11 rises, releasing in its vertical movement a centering pin 2 whose function is already provided on the machine and intended after an angular rotation, to wedge the "jeannette" double tray in front of a new "screen printing workstation".

 Our invention provided in this same vertical clearance for the addition of a finger with a conical end 3 interposed between two cylindrical plates 4 and 5, maintained in pressure by a compression spring 17 and wedged relative to each other by pins centered in corresponding bores, in order to obtain a first face and second face position of the "jeannette" of new design. Maintaining in position first and second face of the "jeannette", allowing work, by the plates 4 and 5 is said dog clutch system. This dog clutch system 4 and 5 is provided at its end with a keyed gear 7 on the shaft 14, allowing a drive.

 Our invention provided for the addition to the upper machine support li of a pneumatic motor with integrated damper V (hydraulic damper or pneumatic cylinder associated with the machine tool cycle), and intended to obtain the rotation of the bearing shaft 14 integral with the double jeannette in a first face, second face position.

 These three elements thus released upwards 2, 3, 6 release the lower part of the machine 12 which can rotate and allow work at the next station.

 At this instant, the plate 11 which comprises the elements 2, 3, 6 is lowered: setting in position of 2 relative to the corresponding bore, the finger at the conical end 3 spreads the two cylindrical plates 4 and 5, releasing them in rotation with one another, the driving gear 6 meshes with the receiving gear 7. The rotation of the double plate "jeannette" on its axis can take place.

Printing on the other side of the textile can be carried out, no additional handling operation having been necessary.

 The bearing shaft 14 has an easily removable end portion which can be adapted to an existing conventional machine.

Claims (7)

 1. Screen printing device on a circular type machine provided with a "jeannette" support arm, characterized in that said arm (14) supports a double plate "jeannette" (8, 9) and is associated with means ( 3, 4, 5, 6, 7, 17, V) allowing an alternating rotation of 180 of said arm.  2. Device according to claim 1 characterized in that the arm (14) is rotatably mounted on the lower part (12) of the machine by means of a dog clutch system (4, 5, 17) disengageable by means of a finger (3) with conical end carried by the upper plate (11) of the machine.  3. Device according to claim 2 characterized in that the dog clutch system (4, 5) is provided with a gear (7) keyed onto the shaft (14), cooperating with a motor gear (6).  4. Device according to claim 3 characterized in that the gear (6) belongs to a pneumatic motor with integrated damper (V) carried by the upper plate (11) of the machine.  5. Device according to any one of claims 1 to 4 characterized in that the "jeannette" double plate (8,9) is provided with lateral spacers (10).  6. Device according to claim 5 characterized in that the spacers (10) are controlled by a lever (11) acting on an arm with angular movement (12).  7. Device according to claim 6 characterized in that the lever can be immobilized in several positions by a pressure screw.