SU819026A1 - Device for folding planar objects - Google Patents

Description

one

The invention relates to equipment for cutting and folding flat products, in particular gauze napkins, and can be used in the chemical and pharmaceutical, light and textile industries.

A device for folding flat products, such as gauze napkins, is known, which includes an axially folding mechanism, feed rollers and a transverse folding mechanism, having a table, sashs mounted on both sides of it, mounted on fixed racks and connected to means for turning them horizontal axis 1.

A disadvantage of the known device is that it is intended to fold gauze napkins of only a certain length and does not allow for conversion to other sizes of foldable napkins.

The purpose of the invention is to expand the technological capabilities of the device.

This is achieved by the fact that, in a device containing a mechanism for longitudinal folding of products, feed rollers and a mechanism for transverse folding of products, having a table, hingedly mounted on either side of it, the flaps mounted on the racks mounted on the frame and connected to the means for their rotation relative to horizontal axes, the transverse folding mechanism has

5 installed on the same level with the slats, rigidly fixed on the slats on the side facing the end surface of the table, and the frame has adjustment grooves, while the racks are installed in iOS 10 with the possibility of fixation.

FIG. 1 shows the kinematic scheme of the device proposed; FIG. 2 — transverse folding mechanism, top view; in fig. 3 is a view A of FIG. 2;

15 in FIG. 4 - view B of FIG. 2; in fig. 5 is a sectional view BB of FIG. 2; in fig. 6 is a cross-section of the FIG. 2; in fig. 7 shows the formation of a folding line.

The proposed device for folding flat products includes roll holders 1, a mechanism for longitudinal folding of products consisting of a deflecting roller 2 and a forming tray 3, feeding rods 4 receiving intermittent rotational movement from the drive of the device through an asterisk 5, shaft 6, conical pair 7, shaft 8, a locking device 9 and gears 10. The device also includes scissors and for cutting napkins, irized by a cam 12 mounted

a shaft 6, guides 13 for supporting the cut napkin 14, a transverse folding mechanism, and a device for transferring the cut napkins to the pas transverse folding mechanism.

The mechanism of non-folding napkins contains a fixed table 15 fixed on the side walls 16 and 17 of the frame with screws 18, and two hinged flaps 19 and 20 mounted on axles 21 and 22. Axes 21 and 22 are fixed on bearings 23 of the uprights 24.

Sharppat flaps 19 and 20 have means to rotate 180 ° relative to the horizontal axis, including gear 25, included in a chain with gear racks 26, rollers 27, rod 28, roller 29, cam 30, coic gear teeth 31, shaft 32 and chain gear 33 from shaft 6. Gears 25 are fixed to axles 21 and 22 by means of pins 34, washers 35 and nuts 36. Gear rails 26 are installed in the mounts 37 and spring-loaded with springs 38. The rod 28 is installed in the guides 39.

Prugiia 40 through the washer 41 presses P1TOK 28 with roller 29 to the cam 30.

The racks 24, with their cylindrical part, fit into the horizontal grooves of the side step bars 16 and 17 of the frame and are fastened to the steiam with screws 42 via shims in the walls. Intermediate bars 44 and 45 are fastened to the posts 24 with screws 43, which mate with a non-movable table 15 and are flush with the hinged flaps 19 and 20.

Using the hinged flaps 19 and 20, the first transverse folding of the articles is carried out. The final folding is made by the pusher 46 mounted on the holder 47 with screws 48. The holder 47 is fixed by a nut 49 on the rod 50 installed in the guides 51. The spring 52 presses the roller 53 of the rod 50 to the cam 54, located on the shaft 55. The rollers 56, ironing a fully folded napkin mounted on the shafts 57 and 58 and receiving movement using the gear pair 59 and the chain gear 60 from the shaft 57. To transfer the fully folded napkin into the tank 61, a guide channel 62 is used, fixed on the side wall 16 of the frame to the screws 63.

Hinged flaps 19 and 20 of the transverse folding mechanism are mounted in racks 24 in such a way that their center of rotation O (Fig. 7) is offset relative to the planes of the hinged flaps 19 and 20 and intermediate planks 44 and 45 by an amount equal to the thickness of the folded napkin. From the diagram (Fig. 7), it can be seen that during the first folding of the deformation only a portion of the napkin of length K is reversed, where R is the fold radius of the napkin (equal to the thickness of the napkin in the initial position). The remaining parts of the wipe do not deform. This allows clamping devices to form folding lines.

A device for transferring the cut napkins 14 to the transverse folding mechanism comprises shpitz 64, which are driven by returning B through the levers 65, one end resting on the cam 66, and the second hinged on the tongs 67.

The cam 66 receives a rotational movement by means of a chain transmission 68 from the shaft 65.

The proposed device works as follows.

Gauze rolls are mounted on roll holders 1 and unwound by the feed rollers 4. When moving, the gauze sheet passes through the deflecting roller 2 and goes to the forming tray 3,

where the longitudinal folding of the gauze is folded. The rollers 4 periodically feed a longitudinally folded gauze sheet between the opened scissors 1 to the guides 13. After cutting with the scissors 11 napkins 14 nestly lies a pair of guides 13, from which sheeter 65 shears onto the cross-folding mechanism. Hinged flaps 19 and 20, making a return and forward movement, produce the first

folding the napkin 14. The pusher 46, during its movement of the slider through the window of the table 15, performs the second folding of the napkin 14 and moves the double-folded napkin to the rollers 56, which catch

the napkin is proglazhivayu it and through the guide channel 62 is transferred to its capacity 61. Instead of the tank 61, a conveyor can be installed to deliver folded napkins or transfer them to other machines.

To reconfigure the device for folding napkins of a different length, it is necessary to loosen the screws 42 for fastening all four racks 24; unscrew nuts 36, remove washers 35 and gear 25; move the pillars 24 along the grooves of the side frames 16 and 17 of the frame to the desired position. In this case, the hinged flaps 19 and 20, as well as intermediate strips 44 and 45, will move together with the uprights 24. After that, the pinion 25 again

mounted on axles 21 and 22 (thereby engaging with toothed racks 26) and secured by nuts 36 through washer 35. Screws 42 are tightened, thereby fixing the new position of the uprights 24.

The adjustment of the rollers 4 to the supply of a different length of napkin material is carried out by adjusting or replacing the locking device 9. The operation of the shears I is adjusted by the cam 12. The transfer device of the cut napkins 14 and the transverse folding mechanism is adjusted to a different length of napkins by changing the tongs 64 and adjusting the cam 66.

Application in the proposed device

the means of adjusting the mechanism of the transversely folded allows a widening of the range of sizes of the articles to be folded. In addition, it gives the possibility of obtaining a different ratio of the length of the cuffs obtained after the first folding to the overall length of the folded products.

Claims (1)

1. Copyright certificate L 103189, cl. B 65 N 45/00, 1964. ; / l 4J 44 / 5С / W f-n /, GRANT DD, - / eS7, i - «--1 CR J jr- | ,, .4 .Д 2 22 .. GG1D /: E | 1C / SD / Ън, IS