SU463248A1 - Duplex printing machine for flat objects - Google Patents

Description

one

The invention relates to screen printing machines used in special fields of the printing or electrical industry.

A known screen printing machine for duplex printing on flat objects, comprising a mechanism for loading objects, two screen printing units with object holders, a mechanism for removing printed objects, a receiving device and an actuator.

A disadvantage of the known machine is that the mechanisms for loading and removal of objects require the use of manual operations for inserting objects into the machine and removing (Printed items from the machine.

The purpose of the proposed device is to improve the machine performance by eliminating manual operations.

The goal is achieved by the fact that the machine is equipped with an intersectional mechanism for transferring objects, while the mechanisms for loading, removal and intersectional transfer of objects are kinematically connected to each other and the drive and are made in the form of self-centering holders connected by gear sectors, and to prevent the print Stencil printed sections are equipped with a platform with supporting protrusions, and the receiving device is discharged. in the form of trays with a concave surface.

FIG. I shows the kinematic scheme of the proposed machine; in fig. 2 - mechanisms for loading, removal and intersectional transfer of objects; in fig. 3 - platform with supporting protrusions.

A machine for duplex printing on flat objects contains a mechanism for loading items 1; the first stencil printing unit with a rotary table 2, holders of 3 objects and a printing apparatus 4; mechanism 5 intersectional transfer of items; the second stencil printing unit with a rotary table 6, holders of 7 objects and a printing apparatus 8; mechanism 9 removal of printed items; connecting shaft 10; drive shaft 11 of the machine; receiving device 12; self-centering holders 13 with toothed sectors 14 and pad 15 with supporting protrusions 16.

The machine works as follows. The loading mechanism 1 feeds flat objects into the holders 3 mounted on the first turntable 2, which moves the objects into the first printing apparatus 4 for sealing them on one side with a moving squeegee through a screen screen. While being sealed, the turntable 2 delivers objects to the intersectional gear mechanism 5,

which turns over and at the same time transfers items from holders 3 to holders 7, placed on the second turntable 6. Second turntable 6 moves the items to the position of the second printing unit 8 where paint is applied to the objects from the reverse side. After sealing the back side, the turntable 6 brings the printed objects to the removal mechanism 9, which turns over and simultaneously unloads the items on the receiving device 12.

Mechanisms for loading, removing and intersecting the transfer of objects are interconnected by a connecting shaft 10 and the drive shaft of the machine 11 (Fig. 1). Moreover, the mechanisms 1, 5 and 9 are made in the form of self-centering holders 13 moving from the gear sectors 14 having a drive (Fig. 2).

In order to prevent smearing of the print on objects, when they are introduced into the second stencil printing unit, holders 7 are equipped with platforms with supporting protrusions 16 (Fig. 3), which contact with the sealed object is carried out in unsealed places. With the same purpose, the receiving device 12 is made in the vpd trays with a concave surface (Fig. 1), so that the receiving ycTpoiicTBO interconnection asasts with a freshly printed seal-1-y item on the space bar. 5 its edge m.

Subject invention

Claims (2)

1. 1 1 machine for two-sided printing on flat objects, containing a mechanism for loading objects, two stencilled printing units with holders of objects, mechapism for the removal of printed objects, an intake device and an actuator, so-called. that, in order to increase the machine's productivity, it is equipped with a mechanism :, me 1 sectional transfer of objects, while the mechanisms of loading, removal and intersectional transfer of objects are kinematically connected with each other and driven and made in the form of self-centering holders, connected by means of serrated ceKTOpOi 2. Maptin according to claim 1, characterized in that, in order to prevent the imprint from being imprinted, the holder of one of the stencil printing units is provided with a platform with supporting protrusions, and the attached device is made in the form of trays with a concave surface.