SU971751A1 - Feeder for feeding loose materials - Google Patents

Description

The invention relates to the pulp and paper industry, such as the corrugated paperboard industry, and more specifically to devices for transporting sheet paperboard for further manufacturing operations.

A feeder is known for supplying sheet materials, such as corrugated cardboard, to a printing machine.

The device operates on the principle of separating and feeding the bottom sheet of the foot with the help of a moving reciprocating feed plate, to which flexible feed plates with protrusions in their upper part are attached. The front edges of the protrusions capture the rear edge of the bottom sheet of cardboard and push it towards the take-up rollers as it moves. Thereafter, the plating strap returns to its original position to grip the next sheet. The posterior edge of the foot is supported by a rail with stops. The front flap is flat, it creates a gap for the passage of the bottom sheet and serves to delay the second from the bottom of the sheet. However, on such a feeder only flat, non-cropped sheets can be fed. To pass the front edge of the sheet into the gap between the front flap and the receiving table, it must be equal and fit without clearance to the surface of the receiving table, and for warped sheets, for this purpose, you must have adjustable rear

10 stops, which is not in the described feeder. The feed plates do not have a fixed upper position and, with a large distance of the curved edge of the warped sheet from the surface of the receiving table, the stops of the plates may not hook the edge of the sheet. With a large elastic deformation of the flexible feed plate, the latter can quickly break in place of a hard

20 attached to the feed bar.

The aim of the invention is to provide the possibility of feeding sheets with warping.

This goal is achieved by

25 that in the feeder for feeding sheet materials, preferably for corrugated cardboard, containing a receiving table, a front limit flap and a feeding bar with a grip,

Claims (1)

30 associated with a mechanism for returning to MOVE, the catching grip is uniform with the bar pivotally and spring-loaded toward the foot. FIG. 1 shows schematically the proposed samonaklad, section A-A in FIG. 2; in fig. 2 - the same, top view; in fig. 3 shows a section BB in FIG. 2; in fig. 4 is a section through the material in FIG. 3; in fig. 5 - scheme of work of the monaclada. The feeder includes a receiving table 1, a lever-connecting rod mechanism 2 of the carriage 3, a feeding plate 4 to which the spring-loaded levers 5 are attached to the hinge. On the receiving table 1 there are copiers 6 installed (figure 2). The feeder has a front latch 7 and an axis 8 with springs 9 (figure 4). In the feeding lever 5, the axis 10 is pressed in with a roller 11. The device works as follows. The carriage 3 and the support bar 4 fixed on them make a return-and-forward movement along the receiving table. In the initial period of operation, the feed strips 4 are in the rearmost position and at this time are a support for the rear edges of the sheets of cardboard. When the feed bar 4 moves forward, the resistant tooth of the feed bar rests against the rear edge of the bottom sheet of cardboard and pushes it forward from under the foot. Due to warping, the front edge of the sheet deflects downwards when it comes into contact with the deflecting surface of the front flap 7. In this case, if the second sheet is pulled forward, the latter goes to the deflecting surface of the front flap 7 and stops, as further advancement is required apply some effort to the second sheet, but this force is absent, since the second sheet is balanced by almost equal friction efforts from above and below. The first bottom sheet passes into the gap between the front flap 7 and the receiving table 1 and then is picked up by the sheet-and-pin rollers of the cutting machine, which direct it to other machine tools. When moving back, the delivery plan 4 with the feeding levers 5 passes under the next sheet below, in the rear position the rollers 11 are placed on the copiers b, as a result the receiving levers 5 slightly lift the rear edges of the foot and the stop teeth on the feeding levers 5 grab the next sheet. The upper portion of the copiers 6 is horizontal, thereby ensuring reliable contact between the hard tooth and the trailing edge of the sheet at the time of sheet advance. The principle of operation of the proposed Saunaclada is tested on the layout. A feeder can have a significant economic effect. During the processing of cardboard sheets, it is possible to automate the scraping of cardboard sheets into piles using well-known bale handlers that are installed along the axis of the corrugated unit. This eliminates the need to pre-assemble sheets of cardboard into the feet, which are then manually folded into bales. All this creates an opportunity to improve the performance of the corrugating unit and the reliability of its operation, which are limited by the very labor-intensive work of manually selecting a stop of cardboard from the unit, their turning and folding into bales. Before loading the die, the nibbling machine will not need to tilt the rest of the feet manually, and this creates the possibility of mechanizing the feeding of sheets to the feeder of the feeder. Due to this, the possibilities of using the die-cutting machine are increased, its productivity and reliability in operation is increased. Claims A self-feeder for feeding sheet materials, preferably corrugated cardboard, comprising a receiving table, a front restriction flap and a gripping feeding plate associated with a mechanism for reciprocating movement, characterized in that, in order to be able to feed sheets with warping, the gripper is connected with a strap articulated and spring-loaded in the direction of the foot. Sources of information taken into account in the examination 1. The patent of Germany 1238982, cl. 15th 5/06, 1967 (prototype). bv Fig.Z