RU2568043C1 - Making of sandwiched band - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: claimed process comprises the steps that follow. Spreading interlayer material on bearing layers or bonding the latter with layers of the former. Overlapping and bonding of moving bearing layers to make sandwiched carcass. Application of covers and sides on moving sandwiched carcass. Application of pieces of paper, film or isolation fabric an the ends of sandwiched tape between bearing layer as well as from above the top bearing layer and from below the bottom bearing layer. Sandwiched tape is cut to pieces to be packed. All bearing layers are stopped simultaneously. Said paper, film or isolation fabric are pulled over top bearing layer, between bearing layers and under bottom bearing layer to covers and sides. The tape is cut over the bearing layer width to get the pieces of paper, film or isolation fabric to be secured at bearing layer. Sandwiched carcass with applied covers and sides is stopped. Covers and sides are removed at the points of securing of the pieces of paper, film or isolation fabric before curing.

EFFECT: higher quality of sandwiched tape.

2 cl, 10 dwg

Description

The invention relates to mechanical engineering, namely to the production of multilayer, including conveyor, belts.

Known multilayer tape, including the middle part and the ends, bearing layers connected by an interlayer material, protective linings and sides. There are no protective plates and sides at the ends of the tape, and the supporting layers are separated from each other by a film and covered by a film from the outside. The interlayer material at the ends of the tape is unvulcanized or absent [1].

In the manufacture of this multilayer tape, the separation of the carrier layers from each other with a film and the closing of the carrier layers with a film from the outside at the ends of the tape requires considerable time and labor.

A known method of manufacturing a multilayer tape, including connecting the interlayer material with the bearing layers, applying and connecting the moving bearing layers to each other with the formation of the multilayer carcass, applying it to the moving multilayer carcass of the plates and sides, vulcanization, cutting the multilayer tape into pieces and packing them [2] .

The objective of the invention is to reduce the complexity and improve the quality of manufacturing a multilayer tape, at the ends of which the carrier layers are separated from each other by a film and closed by a film from the outside.

The disadvantage of this method is the great complexity and the complexity of separating the carrier layers from each other with a film and covering them with a film from the outside, since after vulcanization the carrier layers, plates and sides are firmly connected together.

According to the invention, a method of manufacturing a multilayer tape, includes smearing the carrier layers with an interlayer material or joining the carrier layers with interlayers of the interlayer material, applying and joining the moving bearing layers to each other to form a multilayer carcass, applying onto the moving multilayer carcass plates and sides, placing pieces of film, or paper, or separating fabric at the ends of the multilayer tape between the bearing layers, as well as above the upper and lower lower bearing layers, vulcanization, cutting Maintenance multilayered tape into pieces and their packaging.

All the carrier layers are stopped at the same time, the film is pulled over the upper carrier layer, between the carrier layers and from the bottom of the lower carrier layer before the overlays and beads are applied, cut across the width of the carrier layer to form pieces of film that are fixed to the carrier layer, then a multilayer frame with overlays and the sides are stopped, and the plates and sides are cut and removed at the points where the pieces of film are fixed before vulcanization.

The film is dragged several times and fixed with a partial overlap of the pieces.

In FIG. 1 shows the layout of equipment for the manufacture of a multilayer carcass tape before fixing the film between the bearing layers (three supporting rollers of four are not conventionally shown);

in FIG. 2 is a diagram of film placement on top of the upper carrier layer;

in FIG. 3 - a piece of film mounted on the upper carrier layer (top view);

in FIG. 4 is a diagram of the placement of the film between the bearing layers;

in FIG. 5 is a diagram of the placement of the film from the bottom of the lower carrier layer;

in FIG. 6 - a piece of film, mounted on the upper carrier layer with partial mutual overlap (top view);

in FIG. 7 - layout of equipment for the manufacture of a multilayer carcass tape after fixing the film between the bearing layers (three supporting rollers of four are not conventionally shown);

in FIG. 8 - layout of equipment for overlaying and vulcanization of a multilayer tape;

in FIG. 9 - a section of a multilayer frame with pieces of film (longitudinal section);

in FIG. 10 - a segment of a multilayer tape in a deployed state (top view).

A method of manufacturing a multilayer tape is as follows. Each heat-bearing layer 1, 2, and 3 after heat treatment, impregnation with an adhesive composition and drying are connected to the interlayer material by lubricating both sides of the carrier layer 1, 2 and 3 or by applying a thin layer of interlayer material on both sides of the carrier layer 1, 2, and 3 (on drawings not shown). For example, lubricating fabric pads with rubber compound or applying rubber interlayers to fabric pads is performed on calendaring units [3].

Then, each carrier layer 1, 2, and 3 with interlayer material is rolled up into a roll 4 with the placement of a cushioning canvas 5 between adjacent turns of the carrier layer 1, 2, and 3 (not shown in the drawings).

Rolls 4 are installed on rolling racks 6 with brakes. Each carrier layer 1, 2 and 3 with interlayer material is unwound from the roll 4 and pulled through the guide rolls 7 and 8 (Fig. 1). Laying canvases 5 are wound into rolls 9. The brakes of the expansion racks 6 support the necessary tension of the supporting layers 1, 2 and 3.

From several carrier layers 1, 2 and 3 coated with an interlayer material, a multilayer carcass 10 is assembled by simultaneously applying (duplicating) and pulling through the calender rolls 11. Cutters cut off the irregularities of the longitudinal edges of the multilayer frame 10 (not shown in the drawings). Then the multilayer frame 10 is rolled into a roll 12 on the seaming device 13 with the placement of the cushioning canvas 14, unwound from the roll 15, between adjacent turns of the multilayer frame 10.

To place the film 16 (or paper, or separation fabric) between the carrier layers 1, 2 and 3, their movement, as well as the movement of the multilayer frame 10 is stopped simultaneously. The film 16 is unwound from the roll 17 and stretched over the upper supporting roller 18. The front edge 19 of the film 16 is gripped by a clamp 20 of the rod 21 (or clamps 20 of several bars 21) and stretched from above the upper carrier layer 1 between the guide rollers 7 and 8 (Fig. 2) .

Then, the front edge 19 of the film 16 is fixed on the upper carrier layer 1, for example, with brackets 22, and the clip 20 is released. The film 16 is cut along the width of the carrier layer 1, and the second edge 24 of the formed piece 25 of the film 16 is also fixed on the upper carrier layer 1, for example, brackets 22 (Fig. 3).

In a similar manner, the pieces 25 of the film 16 are alternately fixed between the carrier layers 1, 2 and 3 (FIG. 4), as well as from the bottom of the lower carrier layer 3 (FIG. 5).

When using an insufficiently wide film 16 it is stretched between the carrier layers 1, 2 and 3, as well as several times above the upper carrier layer 1 and below the lower carrier layer 3, cut across the width of the carrier layer 1, 2 and 3 and fixed with partial overlap of the pieces 25 , for example, brackets 22 (Fig. 6).

After fixing the pieces 25 of the film 16 between the carrier layers 1, 2 and 3, as well as above the top 1 and below the bottom 3 of the carrier layers, the carrier layers 1, 2 and 3 and the multilayer frame 10 are driven and continue to assemble the multilayer frame 10 (Fig. 7 )

Roll 12 is mounted on an expansion rack 26 with a brake. The multilayer frame 10 is unwound from a roll 12 on top of the support roller 27 and pulled through the rolls 28 and 29 (Fig. 8). The cushioning canvas 14 is wound into a roll 30. The brake of the expansion rack 26 maintains the necessary tension of the multilayer frame 10.

Top and bottom on the multilayer frame 10 impose the upper 31 and lower 32 plates, unwound from rolls 33 and 34. In this case, the cushioning canvas 35 is wound into rolls 36.

The longitudinal edges of the plates 31 and 32 are wrapped with guides 37 and form the sides 38 of the multilayer tape.

After passing a portion of the multilayer carcass 10 with the fixed pieces 25 of the film 16 rolls 28, the multilayer carcass 10 with the linings 31 and 32 is stopped. At the locations of the pieces of film 25 of film 16, the upper 31 and lower 32 plates are cut and removed (Fig. 9).

Then the multilayer frame 10 with the linings 31 and 32, the sides 38 are moved, placed between the plates of the vulcanizer 39 and vulcanized, except for the locations of the pieces 25 of the film 16.

After vulcanization from the multilayer frame 10, the plates 31 and 32, the sides 38, a multilayer tape is obtained, which is cut into segments 40 on the cutting machine 41 along the midpoints of the pieces of film 16. 16. The cutting lines 42 are the transverse edges of the segment 40. The segment 40 of the multilayer tape is wound on a bobbin 43 and pack.

Thus, each segment 40 of the multilayer tape has two ends on which there are no plates 31, 32 and sides 38, and pieces 25 of the film 16 are fixed between the carrier layers 1, 2 and 3, as well as above the top 1 and bottom of the bottom 3 of the carrier layers ( Fig. 10).

Pulling the film on top of the upper carrier layer, between the carrier layers and from the bottom of the lower carrier layer using rods with clamps during the stop of the carrier layers, reduces the placement time of the film pieces and reduces the complexity of manufacturing a multilayer tape. The fixing of the film pieces during their placement on the stationary bearing layers improves the quality of the multilayer tape, as it eliminates the possibility of displacement and loss of the film pieces. Removing the plates and sides from the fixed core in the places of fixing the pieces of film on the bearing layers and the exclusion of vulcanization of the places of fixing the pieces of film also reduces the time and complexity of manufacturing a multilayer tape.

The technical and economic advantages of the claimed invention are to reduce time and labor, as well as to improve the quality of manufacturing a multilayer tape by quickly pulling and fixing pieces of film on the bearing layers, removing plates and sides, eliminating the vulcanization of the places of fixing pieces of film.

Information sources

1. RF patent No. 2520264, publ. 06/20/2014.

2. Machines and apparatuses of rubber production / Ed. D.M. Barskova. - M .: Chemistry. 1975.S. 436-441.

3. Conveyor belts / F.A. Makhlis, I.I. Leonov, O.G. Karbasov, V.V. Nikitin. - M .: Chemistry, 1991.S. 86-88.

Claims (2)

1. A method of manufacturing a multilayer tape, including smearing the carrier layers with an interlayer material or connecting the carrier layers with interlayers of the interlayer material, applying and joining the moving bearing layers to each other to form a multilayer carcass, superimposing the moving multilayer carcass of the plates and sides, placing pieces of film, or paper, or separating fabric at the ends of the multilayer tape between the bearing layers, as well as above the upper and lower lower bearing layers, vulcanization, multilayer cutting tapes on segments and their packaging, characterized in that all the carrier layers are stopped at the same time, the film, or paper, or separation fabric is dragged over the upper carrier layer, between the carrier layers and from the bottom of the lower carrier layer before applying the linings and sides, cut across the width of the carrier layer with the formation of pieces of film, or paper, or separating fabric, which are fixed on the carrier layer, then the multilayer frame with overlays and sides is stopped, and the plates and sides are cut and removed in places fixed I have pieces of film or paper, or separating tissue prior to curing. 2. A method of manufacturing a multilayer tape according to claim 1, characterized in that the film, or paper, or release fabric is pulled several times and fixed with a partial overlap of the pieces.

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